JP6866583B2 - Liquid crystal compound - Google Patents

Description

The present invention relates to a compound having a cyclopentane ring or a cyclopentene ring useful as an organic electronic material or a medical pesticide, particularly a material for a liquid crystal display element, and a liquid crystal composition using these.

Liquid crystal display elements are used in various measuring instruments such as clocks and calculators, automobile panels, word processors, electronic organizers, printers, computers, televisions, clocks, advertisement display boards and the like. Typical liquid crystal display methods are TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor), and IPS (in-plane switching) type. There is a drive system such as. The liquid crystal composition used for these liquid crystal display elements is stable to external factors such as moisture, air, heat, and light, and the liquid crystal phase (nematic phase, smectic) is in the widest possible temperature range centered on room temperature. It is required to show a phase (phase, blue phase, etc.), have low viscosity, and have a low drive voltage. Further, in the liquid crystal composition, several to several tens of compounds are selected in order to optimize the dielectric anisotropy (Δε), the refractive index anisotropy (Δn), etc. according to each display element. It is configured.

When the liquid crystal composition is used as a display element or the like, _{it is required that the rotational viscosity coefficient (γ 1} ) is as low as possible. There are various methods for obtaining a liquid crystal composition having a low γ ₁ , and one of them is known to use a compound having a large Δn (extrapolation value). The reason for this will be described below. _{In order to reduce γ 1} of the liquid crystal composition, it is effective to increase the amount of the non-polar compound having Δn (extrapolation value) of almost 0 _{and showing low γ 1 (extrapolation value) as much as possible.} .. The generally required composition Δn is determined for each liquid crystal panel, and a _{compound having a large γ 1} (extrapolation value) is added in order to impart Δn. Therefore, by replacing the compound with a compound showing a large Δn (extrapolation value), the amount of the non-polar compound used can be increased, and as a result, a _{decrease in γ 1} of the liquid crystal composition can be achieved. Further, in order to use it as a liquid crystal composition, it is required to show good compatibility with other liquid crystal components. This is because if the miscibility with other liquid crystal components is low, precipitation or the like will occur when the liquid crystal composition is stored at a low temperature.

So far, the following compounds having a biphenyl structure have been reported, but there is a problem that Δn is not sufficiently large (Patent Document 1).

International Publication No. 2016/035786

An object to be solved by the present invention is to provide a compound having a large Δn, a _{liquid crystal composition exhibiting a low γ 1} having the compound as a constituent member, and a liquid crystal display device.

As a result of examining various compounds in order to solve the above-mentioned problems, the inventors of the present application have found that a compound having a cyclopentane ring or a cyclopentene ring can effectively solve the problems, and have completed the present invention.

The invention of the present application has the general formula (i).

(In the formula, ^Ri1 represents an alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, a fluorine atom or -CN, and the alkyl group and one existing in the alkenyl group. -CH ₂ - or nonadjacent two or more -CH ₂ - is -C≡C -, - O -, - S -, - COO -, - OCO- or may be replaced by -CO-, The hydrogen atom present in the alkyl group and the alkenyl group may be replaced with a fluorine atom.
A ⁱ¹ represents a cyclopentyl group or a 1-cyclopentenyl group.
A ⁱ² and A ⁱ³ are independent of each other
(A) 1,4-cyclohexylene group (the one present in the group -CH ₂ - or nonadjacent two or more -CH ₂ - is replaced by -O- or -S- Is also good.)
(B) 1,4-Phenylene group (one -CH = existing in this group or two or more -CH = not adjacent to each other may be replaced with -N = and is present in this group. One hydrogen atom may be replaced with a fluorine atom.)
(C) 1,4-Cyclohexenylene group, naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group (c) One -CH = or two or more non-adjacent -CH = present in the naphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group is- It may be replaced with N =, and the hydrogen atom existing in these groups may be replaced with a fluorine atom.)
Represents a group selected from the group consisting of
Z ⁱ¹ and Z ⁱ² are independent of -CH ₂ O-, -OCH _2- , -CF ₂ O-, -OCF _2- , -COO-, -OCO-, -CH ₂ CH _2- , -CF. ₂ Represents CF _2- , -CH = CH-, -CF = CF-, -C≡C- or a single bond.
n ⁱ is 0, 1 or 2, if a n ⁱ is 2 A ⁱ² and Z ⁱ² there are multiple, they are each independently, it may be the same or different. )
Provided are a compound represented by the above, and also provided a liquid crystal composition containing the compound and a liquid crystal display device using the liquid crystal composition.

The compound represented by the general formula (i) provided by the present invention exhibits a large Δn and also has high chemical stability. Therefore, by using the compound represented by the general formula (i) as a component of the liquid crystal composition, a liquid crystal composition exhibiting _{a low γ 1 can be obtained.} Therefore, it is very useful as a constituent component of a liquid crystal composition for a liquid crystal display element that requires a high-speed response.

In the general formula (i), in order to reduce γ ₁ ^{, R i1} is preferably an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, and has 1 to 5 carbon atoms. It is particularly preferable that the alkyl group or an alkenyl group having 2 to 5 carbon atoms is used. Further, it is preferably linear. In order to increase Δn, an alkoxy group having 1 to 5 carbon atoms is preferable. In order to increase Δε, it is preferable that the alkoxy group has 1 to 5 carbon atoms. In order to increase the compatibility with other liquid crystal components, ^Ri1 is preferably an alkyl group having 2 to 5 carbon atoms or an alkoxy group having 2 to 5 carbon atoms, and has 2 to 3 carbon atoms. It is more preferably an alkyl group. The ^{hydrogen atom existing in Ri1} may be substituted with a fluorine atom, but it is preferable that the hydrogen atom is not substituted with a fluorine atom in order to improve the long-term reliability of the liquid crystal display element.

A ⁱ¹ represents a cyclopentyl group or a 1-cyclopentenyl group. A cyclopentyl group is preferred for reducing _{γ 1.} A 1-cyclopentenyl group is preferable in order to increase Δn.

A ⁱ² and A ⁱ³ are independent of each other

It is preferable to represent a group selected from. Specifically, A ⁱ² and A ⁱ³ are independent of each other _{to reduce γ 1} , a trans-1,4-cyclohexylene group, an unsubstituted 1,4-phenylene group, 2-fluoro-1, It is preferably a 4-phenylene group or a 3-fluoro-1,4-phenylene group, and more preferably a trans-1,4-cyclohexylene group. In order to improve miscibility with other liquid crystal components, a trans-1,4-cyclohexylene group, a 2-fluoro-1,4-phenylene group or a 3-fluoro-1,4-phenylene group may be used. preferable. In _{order to increase T ni} , it is preferably an unsubstituted 1,4-phenylene group or a 1,4-cyclohexenylene group. In order to show a negatively large Δε, it is preferably a 2-fluoro-1,4-phenylene group, a 3-fluoro-1,4-phenylene group or a 2,3-difluoro-1,4-phenylene group. In order to improve Δn, ^{at least one of Ai2} and ^Ai3 is an unsubstituted 1,4-phenylene group, 2-fluoro-1,4-phenylene group or 3-fluoro-1,4-phenylene group. It is preferable that ^{both Ai2} and ^Ai3 are unsubstituted 1,4-phenylene group, 2-fluoro-1,4-phenylene group or 3-fluoro-1,4-phenylene group. .. In order to achieve both miscibility with other liquid crystal components while showing a large Δε, the total number of fluorine atoms present in ^Ai1 and ^{Ai2 is preferably 1 to 4.}

Z ⁱ¹ and Z ⁱ² are independent, and _{in order to reduce γ 1} , they are preferably single-bonded, −CH ₂ CH _{2- , −CH 2} O− or −OCH ₂ −, and are single-bonded or −CH. It is more preferably ₂ CH _2-. In order to increase Tni, it is preferably single bond, -COO-, -OCO-, -CH = CH- or -C≡C-, and single bond, -CH = CH- or -C≡C-. Is more preferable. In order to increase the Δn _{is, -OCH 2 -, - CF 2} O -, - OCF 2 -, - COO -, - OCO -, - CH = CH -, - CF = CF -, - C≡C- is Preferably, −OCH _2- , −CH = CH−, −C≡C− are even more preferred. In order to improve the miscibility with other liquid crystal components, it is preferably _{−CH 2} CH ₂ −, −CH ₂ O− or −OCH _{2 −.} A single bond is preferable in order to improve long-term reliability when the liquid crystal display element is used.

n ⁱ is preferably in the case of emphasizing gamma ₁ is 0 or 1, more preferably 0. When T _ni is emphasized, it is preferably 1 or 2. In order to increase the miscibility with other liquid crystal components, it is preferably 0 or 1.

The compound represented by the general formula (i) does not have a structure in which heteroatoms are directly bonded to each other.

Among the general formulas (i), the following general formulas (i-1-1) to general formulas (i-1-8), general formulas (i-2-1) to general formulas (i-2-18), Each compound represented by the general formula (i-3-1) to the general formula (i-3-9) and the general formula (i-4-1) to the general formula (i-4-10) is preferable. Among them, particularly preferable compounds are the general formula (i-1-1), the general formula (i-2-1), the general formula (i-2-7), and the general formula (i-3-7).

^{(Wherein, R i1} and ^{A i1} represent respectively the same meaning as ^{R i1} and ^{A i1} in the general formula (i).)

^{(Wherein, R i1} and ^{A i1} represent respectively the same meaning as ^{R i1} and ^{A i1} in the general formula (i).)

^{(Wherein, R i1} and ^{A i1} represent respectively the same meaning as ^{R i1} and ^{A i1} in the general formula (i).)

^{(Wherein, R i1} and ^{A i1} represent respectively the same meaning as ^{R i1} and ^{A i1} in the general formula (i).)
(Production method)
In the present invention, the compound represented by the general formula (i) can be produced as follows. Of course, the gist and scope of the present invention are not limited by these production examples.
General formula (ii-1)

(Wherein, X represents a chlorine atom, a bromine atom and an iodine ^{atom, R i1, A i2, A} i3, Z i2 and ^{n i is, R i1, A i2, A} i3 represented by the general formula (i) , a compound represented by the representative.) the same meaning as Z ⁱ² and n ^i, is reacted with cyclopentanone after the reaction with metal magnesium, the general formula (ii-2)

^{(Wherein, R i1, A i2, A} i3, Z i2 and ^{n i is, R} i1, A ⁱ² represented by the general formula ^{(i), A i3, Z} i2, and represent the same meaning as ^{n i.} )
The compound represented by is obtained.

The reaction solvent to be used may be any one as long as the reaction proceeds suitably, but ether solvents such as diethyl ether, tetrahydrofuran, diisopropyl ether and tertiary butyl methyl ether, hexane, heptane, benzene, toluene, etc. A hydrocarbon solvent such as xylene is preferable, and diethyl ether, tetrahydrofuran, hexane and heptane are more preferable. It is also preferable to mix these solvents as needed.
The reaction temperature may be any temperature as long as the reaction proceeds suitably, but when the compound represented by the general formula (ii-1) is reacted with magnesium to obtain a reaction intermediate, the reaction intermediate is obtained. The temperature from 0 ° C. to the temperature at which the reaction solvent refluxes is preferable, and the temperature from 25 ° C. to the temperature at which the reaction solvent refluxes is more preferable. When the reaction intermediate is reacted with cyclopentanone, the temperature is preferably between 25 ° C. and reflux of the reaction solvent, and more preferably 25 ° C. to 60 ° C.
By dehydrating the compound represented by the general formula (ii-2) in the presence of an acid catalyst, A ⁱ¹ is represented by a 1-cyclopentenyl group in the general formula (i).

^{(Wherein, R i1, A i2 ,, A} i3, Z i2 and ^{n i} is, ^R i1 represented by the general formula ^{(i), A i2, A} i3, Z i2, and represents the same meaning as ^{n i} A compound represented by.) Can be obtained.
The reaction solvent may be any solvent as long as the reaction proceeds suitably, but aromatic solvents such as benzene, toluene and xylene, aliphatic solvents such as hexane, heptane and cyclohexane, diethyl ether and diisopropyl ether. , Tarsary butyl methyl ether and other ether solvents are preferred, and benzene, toluene, xylene, cyclohexane and diisopropyl ether are even more preferred. It is also preferable to mix these solvents.
The acid catalyst used may be any as long as it allows the reaction to proceed favorably, but concentrated sulfuric acid, benzenesulfonic acid, and p-toluenesulfonic acid are preferable. Further, it may be a pyridine salt of these acids.
The reaction temperature may be any temperature as long as the reaction is preferably carried out, but it is preferably a temperature from room temperature until the solvent refluxes, and more preferably a temperature at which the solvent refluxes.
The water produced may be removed as long as the reaction proceeds favorably, but a method using a Dean-Stark apparatus, a method using molecular sieves, and a method using a Dean-Stark apparatus are more preferable.
By reacting the compound represented by the general formula (ii-3) with hydrogen in the presence of a catalyst, A ⁱ¹ is represented by a cyclopentyl group in the general formula (i).

^{(Wherein, R i1, A i2, A} i3, Z i2 and ^{n i is, R} i1, A ⁱ² represented by the general formula ^{(i), A i3, Z} i2, and represent the same meaning as ^{n i.} ) Can be obtained.
The reaction solvent to be used may be any one as long as the reaction proceeds suitably, but ether solvents such as diethyl ether, tetrahydrofuran, diisopropyl ether and tertiary butyl methyl ether, hexane, heptane, benzene, toluene, etc. A hydrocarbon solvent such as xylene, an alcohol solvent such as methanol, ethanol, propanol and isopropyl alcohol are preferable, and tetrahydrofuran, toluene and ethanol are more preferable. It is also preferable to mix these solvents as needed.
The reaction temperature may be any temperature as long as the reaction is preferably carried out, but the temperature is preferably -100 ° C to 200 ° C, more preferably 0 ° C to 100 ° C.
The catalyst used may be either a homogeneous catalyst or a heterogeneous catalyst as long as the reaction proceeds suitably, but Pd carbon, Pd alumina, Pd barium sulfate, Pd black, Pd calcium carbonate, palladium oxide, etc. Palladium hydroxide, Pt carbon, Pt sulphated carbon, Pt alumina, Pt black, platinum oxide, nickel, lane nickel, Ru carbon, Ru alumina, Ru black, ruthenium oxide, Ru titania, Rh carbon, Rh alumina, Rh black, oxidation Rhodium is preferred, with Pd carbon, Pd alumina, Pd barium sulfate, Pd black, Pd calcium carbonate, palladium oxide, palladium hydroxide, Pt carbon, Pt sulphated carbon, Pt alumina, Pt black, platinum oxide, nickel and lane nickel. Pd carbon, Pd alumina, Pd barium sulfate, Pd black, Pd calcium carbonate, palladium oxide, palladium hydroxide, nickel and lane nickel are more preferable. The catalyst may be a water-containing product or a dried product.
The pressure during the reaction is preferably 0 MPa to 10 MPa, more preferably 0 MPa to 1 MPa, with the atmospheric pressure set to 0 MPa.
If the content of the compound represented by the general formula (i) is small in the liquid crystal composition of the present invention, the effect does not appear. Therefore, as the lower limit value in the composition, 1% by mass (hereinafter,% in the composition is mass). It is preferably contained in an amount of% or more, preferably 2% or more, preferably 5% or more, and further preferably 10% or more. Further, since a large content causes problems such as precipitation, the upper limit value is preferably 70% or less, more preferably 60% or less, further preferably 50% or less, and 40% or less. It is particularly preferable to contain% or less. The compound represented by the general formula (i) may be used alone, but two or more compounds may be used at the same time.

A compound other than the compound represented by the general formula (i) may be used in order to adjust the physical property value of the liquid crystal composition, and a compound having no liquid crystal phase other than the compound having a liquid crystal phase may be used as required. It can also be added.

The composition provided by the present invention contains at least one compound represented by the general formula (i) as its first component, and at least one of the following second to fourth components as other components. It is preferable to contain it.

The second component is a compound selected from the compounds represented by the general formulas (N-1), (N-2) and (N-3), and one kind or two or more kinds of the compounds are used in the liquid crystal composition. It is preferable to contain it. These compounds are dielectrically negative compounds (the sign of Δε is negative and their absolute value is greater than 2).

(In the formula, ^RN11 , ^RN12 , ^RN21 , ^RN22 , ^RN31 and ^RN32 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two non-adjacent alkyl groups in the alkyl group. More than one −CH ₂₋ may be independently substituted by −CH = CH−, −C≡C−, −O−, −CO−, −COO− or −OCO−.
A ^N11 , A ^N12 , A ^N21 , A ^N22 , A ^N31 and A ^N32 are independently (a) 1,4-cyclohexylene groups (one -CH _2- or adjacent to each other in this group). No two or more -CH _2- may be replaced by -O-) and (b) 1,4-phenylene group (one -CH = or non-adjacent 2 present in this group) More than one -CH = may be replaced with -N =.)
(C) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH = existing in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH = may be replaced with -N =. )
(D) Represents a group selected from the group consisting of 1,4-cyclohexenylene groups, and the above groups (a), group (b), group (c) and group (d) are independently cyano groups, respectively. It may be replaced with a fluorine atom or a chlorine atom.
^{Z N11, Z N12, Z N21} , Z N22, Z N31 and ^{Z N32} are each independently a single _{bond, -CH 2 CH 2 -, -} (CH 2) 4 -, - OCH 2 -, - CH 2 O- , -COO-, -OCO-, -OCF _2- , -CF ₂ O-, -CH = NN = CH-, -CH = CH-, -CF = CF- or -C≡C-
X ^N21 represents a hydrogen atom or a fluorine atom.
^TN31 represents −CH _2- or an oxygen atom and represents
n ^N11 , n ^N12 , n ^N21 , n ^N22 , n ^N31 and n ^N32 each independently represent an integer of 0 to 3, but n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 are independent of each other. If it is 1, 2 or 3, and ^{there are a plurality of A N11 to} A ^N32 and Z ^{N11 to} Z ^N32 , they may be the same or different. )
The compounds represented by the general formulas (N-1), (N-2) and (N-3) are preferably compounds having a negative Δε and an absolute value of more than 3.

In the general formulas (N-1), (N-2) and (N-3), ^RN11 , ^RN12 , ^RN21 , ^RN22 , ^RN31 and ^RN32 are independent of each other and have 1 to 8 carbon atoms. Alkyl group, alkoxy group having 1 to 8 carbon atoms, alkenyl group having 2 to 8 carbon atoms or alkenyloxy group having 2 to 8 carbon atoms is preferable, and alkyl group having 1 to 5 carbon atoms and carbon atom number of carbon atoms are preferable. Alkoxy groups 1 to 5, alkenyl groups having 2 to 5 carbon atoms, or alkenyloxy groups having 2 to 5 carbon atoms are preferable, and alkyl groups having 1 to 5 carbon atoms or alkenyl groups having 2 to 5 carbon atoms are preferable. More preferably, an alkyl group having 2 to 5 carbon atoms or an alkoxy group having 2 to 3 carbon atoms is further preferable, and an alkenyl group (propenyl group) having 3 carbon atoms is particularly preferable.

When the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon. An alkoxy group having 4 to 5 atoms is preferable, and when the ring structure to which the alkoxy group is bonded is a saturated ring structure such as cyclohexane, pyran, or dioxane, a linear alkyl group having 1 to 5 carbon atoms or a linear chain is used. Alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from the groups represented by any of the formulas (R1) to (R5). (The black dots in each equation represent carbon atoms in the ring structure.)

^AN11 , ^AN12 , ^AN21 , ^AN22 , ^AN31 and ^AN32 are preferably aromatics when it is required to increase Δn independently, and fats are used to improve the response rate. It is preferably a group, and is preferably a trans-1,4-cyclohexylene group, a 1,4-phenylene group, a 2-fluoro-1,4-phenylene group, a 3-fluoro-1,4-phenylene group, 3,5. -Difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1 , 4-Diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, which are preferably represented as follows. It is more preferable to represent the structure of

It is more preferable to represent a trans-1,4-cyclohexylene group, a 1,4-cyclohexenylene group or a 1,4-phenylene group.

^{Z N11, Z N12, Z N21} , Z N22, Z N31 and ^{Z N32} _-CH 2 each _{independently O -, - CF 2 O -} , - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond preferably represents _{an, -CH 2 O -, - CH} 2 CH 2 - or a single bond is more preferable, _-CH 2 O-or a single bond is particularly preferred.

Fluorine atom is preferable for X ^N21.

Oxygen atom is preferable for ^TN31.

n ^N11 + n ^N12 , n ^N21 + n ^N22 and n ^N31 + n ^N32 are preferably 1 or 2, n ^N11 is 1 and n ^N12 is 0, n ^N11 is 2 and n ^N12 is 0, n ^{A combination of N11} being 1 and n ^N12 being 1, a combination of n ^N11 being 2 and n ^N12 being 1, a combination of n ^N21 being 1 and n ^N22 being 0, n ^N21 being 2 and n ^N22 being A combination of 0, a combination of n ^N31 being 1 and n ^N32 being 0, and a combination of n ^N31 being 2 and n ^N32 being 0 are preferred.

The lower limit of the preferable content of the compound represented by the formula (N-1) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, and 30%. , 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%. Is.

The lower limit of the preferable content of the compound represented by the formula (N-2) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, and 30%. , 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%. Is.

The lower limit of the preferable content of the compound represented by the formula (N-3) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, and 30%. , 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20%. Is.

When a composition having a low viscosity and a high response rate is required, it is preferable that the above lower limit value is low and the upper limit value is low. Moreover, maintaining high T _NI of the compositions of the present invention, it is preferred if good composition temperature stability is required a low upper limit lower the lower limit of the above. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable that the above lower limit value is high and the upper limit value is high.

Examples of the compound represented by the general formula (N-1) include a group of compounds represented by the following general formulas (N-1a) to (N-1g).

^{(Wherein, R N11} and ^{R N12} are as defined ^{R N11} and ^{R N12} in the general formula ^{(N-1), n Na11} represents 0 or ^{1, n NB11} represents 0 or ^{1, n NC11} is ^{Represents 0 or 1, n Nd11} represents 0 or 1, n Ne11 represents 1 or 2, n ^Nf11 represents 1 or 2, n ^{Ng 11} represents 1 or 2, and A ^{Ne 11} represents trans-1,4. ^{-Represents a} cyclohexylene group or a 1,4-phenylene group, and A Ng11 represents a trans-1,4-cyclohexylene group, a 1,4-cyclohexenylene group or a 1,4-phenylene group, but at least one. Represents a 1,4-cyclohexenylene group, Z ^{Ne 11} represents a single bond or ethylene, but at least one represents ethylene.)
More specifically, the compound represented by the general formula (N-1) may be a compound selected from the compound group represented by the general formulas (N-1-1) to (N-1-21). preferable.

The compound represented by the general formula (N-1-1) is the following compound.

^{(Wherein, R N111} and ^{R N112} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group, a pentyl group or a vinyl group. ^RN112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.

The compound represented by the general formula (N-1-1) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when set to a small value. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-1) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. , 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6 %, 5%, and 3%.

Further, the compound represented by the general formula (N-1-1) is a compound selected from the compound group represented by the formulas (N-1-1.1) to (N1-1.23). It is preferable that the compound is represented by the formulas (N-1-1.1) to (N-1-1.4), and the formulas (N-1-1.1) and the formula (N-1-1.4) are preferable. The compound represented by -1-1.3) is preferable.

The compounds represented by the formulas (N-1-1.1) to (N1-1.22) can be used alone or in combination, but the composition of the present invention can be used. The lower limit of the preferred content of these compounds alone or of these compounds relative to the total amount is 5%, 10%, 13%, 15%, 17%, 20%, 23%. , 25%, 27%, 30%, 33%, 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6 %, 5%, and 3%.

The compound represented by the general formula (N-1-2) is the following compound.

^{(Wherein, R N121} and ^{R N122} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group, a butyl group or a pentyl group. The ^RN122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and a methyl group, a propyl group, a methoxy group, an ethoxy group or a propoxy group. preferable.

The compound represented by the general formula (N-1-2) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when fewer to set the content, when importance is attached to T _NI content The effect is high if you set a large amount. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-2) with respect to the total amount of the composition of the present invention is 5%, 7%, 10% and 13%. 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%. It is 40% and 42%. The preferred upper limit of the content is 50%, 48%, 45%, 43%, 40%, 38%, 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10 %, 8%, 7%, 6%, 5%.

Further, the compound represented by the general formula (N-1-2) is a compound selected from the compound group represented by the formulas (N-1-2.1) to (N-1-2.22). It is preferable that there are formulas (N-1-2.3) to formulas (N-1-2.7), formulas (N1-2.10), formulas (N-1-2.11), and formulas. It is preferable that the compound is represented by (N-1-2.13) and the formula (N1-2.20), and when the improvement of Δε is emphasized, the formula (N-1-2.3) is used. is preferably a compound represented by the formula (N-1-2.7) _from when emphasizing improvements in _{T NI} formula (N-1-2.10), formula (N-1-2.11) And the compound represented by the formula (N-1-2.13) is preferable, and the compound represented by the formula (N-1-2.20) is used when the improvement of the response speed is emphasized. Is preferable.

The compounds represented by the formulas (N-1-2.1) to (N-1-2.22) can be used alone or in combination, but the composition of the present invention. The lower limit of the preferred content of alone or of these compounds relative to the total amount of is 5%, 10%, 13%, 15%, 17%, 20%, 23. %, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6 %, 5%, and 3%.

The compound represented by the general formula (N-1-3) is the following compound.

^{(Wherein, R N131} and ^{R N132} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably a 1-propenyl group, an ethoxy group, a propoxy group or a butoxy group. ..

The compound represented by the general formula (N-1-3) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-3) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

Further, the compound represented by the general formula (N-1--3) is a compound selected from the compound group represented by the formulas (N-1-3.21) to (N-1-3.21). It is preferable that the compound is represented by the formulas (N-1-3.1) to (N-1-3.7) and (N-1-3.21), and is preferably the compound represented by the formula (N-1-3.21). -1-3.1), Eq. (N-1-3.2), Eq. (N-1-3.3), Eq. (N-1-3.4) and Eq. (N-1-3.6) ) Is preferable.

The compounds represented by the formulas (N-1-3.1) to (N-1-3.4), the formula (N-1-3.6) and the formula (N-1-3.21) are independent. Although it can be used in the above or in combination, the combination of the formula (N-1-3.1) and the formula (N-1-3.2) and the formula (N-1-3.3) are used. ), Formula (N-1-3.4) and formula (N-1-3.6), 2 or 3 combinations are preferred. The lower limit of the preferred content of the composition alone or of these compounds relative to the total amount of the compositions of the present invention is 5%, 10%, 13%, 15%, 17%, 20. %. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-4) is the following compound.

^{(Wherein, R N141} and ^{R N142} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
Independently R ^N141 and ^{R N142} are each an alkyl group having 1 to 5 carbon atoms, preferably an alkenyl group or an alkoxy group having 1 to 4 carbon atoms carbon atoms 4-5, methyl group, propyl group, ethoxy Groups or butoxy groups are preferred.

The compound represented by the general formula (N-1-4) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when set to a small value. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-4) with respect to the total amount of the composition of the present invention is 3%, 5%, 7% and 10%. It is 13%, it is 15%, it is 17%, and it is 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, 8%.

Further, the compound represented by the general formula (N-1--4) is a compound selected from the compound group represented by the formulas (N-1-4.1) to (N-1-4.14). It is preferable that the compound is represented by the formulas (N-1-4.1) to (N-1-4.4), and the compounds are preferably of the formulas (N-1-4.1) and (N-1-4.4). The compounds represented by -1-4.2) and the formula (N-1-4.4) are preferable.

The compounds represented by the formulas (N-1-4.1) to (N-1-4.14) can be used alone or in combination, but the composition of the present invention can be used. The lower limit of the preferred content of these compounds alone or of these compounds relative to the total amount is 3%, 5%, 7%, 10%, 13%, 15%, 17%. It is 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, 8%.

The compound represented by the general formula (N-1-5) is the following compound.

^{(Wherein, R N151} and ^{R N152} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN151 and ^RN152 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, preferably an ethyl group, a propyl group, or a butyl group. Is preferable.

The compound represented by the general formula (N-1-5) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

It is preferable to set a higher content in the case of emphasizing improved [Delta] [epsilon], to emphasize the solubility at low temperature highly effective when fewer to set the content, when importance is attached to T _NI content The effect is high if you set a large amount. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-5) with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, and 13%. , 15%, 17%, and 20%. The preferred upper limit of the content is 35%, 33%, 30%, 28%, 25%, 23%, 20% with respect to the total amount of the composition of the present invention. %, 18%, 15%, 13%.

Further, the compound represented by the general formula (N-1-5) is a compound selected from the compound group represented by the formulas (N-1-5.1) to (N-1-5.6). It is preferable that the compound is represented by the formula (N-1-5.1), the formula (N-1-5.2) and the formula (N-1-5.4).

The compounds represented by the formulas (N-1-5.1), (N-1-5.2) and (N-1-5.4) may be used alone or in combination. However, the lower limit of the preferable content of the composition alone or of these compounds with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13%. It is 15%, 17%, and 20%. The preferred upper limit of the content is 35%, 33%, 30%, 28%, 25%, 23%, 20% with respect to the total amount of the composition of the present invention. %, 18%, 15%, 13%.

The compound represented by the general formula (N-1-10) is the following compound.

^{(Wherein, R N1101} and ^{R N1102} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. ^RN1102 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-10) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

It is preferable to set the content higher when the improvement of Δε is emphasized, the effect is higher when the content is set higher when the solubility at low temperature is emphasized, and the content is set _{when the TNI} is emphasized. The effect is high when is set high. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-10) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

Further, the compound represented by the general formula (N-1-10) is a compound selected from the compound group represented by the formulas (N-1-10.1) to (N-1-10.21). It is preferably represented by the formulas (N-1-10.1) to (N-1-10.5), (N-1-10.20) and (N-1-10.21). It is preferably a compound, preferably of formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.20) and formula (N-1-10.21). The compound represented by is preferable.

The compounds represented by the formulas (N-1-10.1), (N-1-10.2), (N-1-10.20) and (N-1-10.21) are used alone. Although it can be used in combination or in combination, the lower limit of the preferable content of these compounds alone or in combination with respect to the total amount of the composition of the present invention is 5% and 10%. , 13%, 15%, 17%, 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-11) is the following compound.

^{(Wherein, R N1111} and ^{R N1112} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group. ^RN1112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-11) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the content is set low, and _{when the TNI} is emphasized, the content is high. The effect is high when is set high. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-11) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

Further, the compound represented by the general formula (N-1-11) is a compound selected from the compound group represented by the formulas (N-1-11.1) to (N-1-1.15). It is preferable that the compound is represented by the formulas (N-1-11.1) to (N-1-1.15), and the compounds are preferably represented by the formulas (N-1-11.2) to (N-1-1.15). The compound represented by 1-11.4) is preferable.

The compounds represented by the formulas (N-1-11.2) and (N-1-11.4) can be used alone or in combination, but the compositions of the present invention can be used. The lower limit of the preferred content of these compounds alone or of these compounds relative to the total amount of is 5%, 10%, 13%, 15%, 17%, 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-12) is the following compound.

^{(Wherein, R N1121} and ^{R N1122} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-12) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-12) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-13) is the following compound.

^{(Wherein, R N1131} and ^{R N1132} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-13) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-13) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-14) is the following compound.

^{(Wherein, R N1141} and ^{R N1142} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1142 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-14) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-14) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-15) is the following compound.

^{(Wherein, R N1151} and ^{R N1152} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1152 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-15) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-15) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-16) is the following compound.

^{(Wherein, R N1161} and ^{R N1162} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1162 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.

The compound represented by the general formula (N-1-16) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-16) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-17) is the following compound.

^{(Wherein, R N1171} and ^{R N1172} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group. ^RN1172 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-17) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-17) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-18) is the following compound.

^{(Wherein, R N1181} and ^{R N1182} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group. ^RN1182 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.

The compound represented by the general formula (N-1-18) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-18) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

Further, the compound represented by the general formula (N-1-18) is a compound selected from the compound group represented by the formulas (N-1-18.1) to (N-1-18.5). It is preferable that the compound is represented by the formulas (N-1-18.1) to (N-1-11.3), and the compounds are preferably represented by the formulas (N-1-18.1) to (N-1-11. The compound represented by 1-18.3) is preferable.

The compound represented by the general formula (N-1-20) is the following compound.

^{(Wherein, R N1201} and ^{R N1202} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1201 and ^RN1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compound represented by the general formula (N-1-20) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-20) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-21) is the following compound.

^{(Wherein, R N1211} and ^{R N1212} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1211 and ^RN1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compound represented by the general formula (N-1-21) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-1-21) with respect to the total amount of the composition of the present invention is 5%, 10%, 13% and 15%. It is 17% and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%.

The compound represented by the general formula (N-1-22) is the following compound.

^{(Wherein, R N1221} and ^{R N1222} independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-1).)
^RN1221 and ^RN1222 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably an ethyl group, a propyl group or a butyl group.

The compound represented by the general formula (N-1-22) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when is set to a large extent. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-2-1) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 13%. , 15%, 17%, and 20%. The upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 10%, 5%.

Further, the compound represented by the general formula (N-1-22) is a compound selected from the compound group represented by the formulas (N-1-22.1) to (N-1-2.12.2). It is preferable that the compound is represented by the formulas (N-1-22.1) to (N-1-22.5), and the compounds are preferably represented by the formulas (N-1-22.1) to (N-). The compound represented by 1-22.4) is preferable.

The compound represented by the general formula (N-3) is preferably a compound selected from the compound group represented by the general formula (N-3-2).

^{(Wherein, R N321} and ^{R N322} each independently represents the same meaning as ^{R N11} and ^{R N12} in the general formula (N-3).)
^RN321 and ^RN322 are preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group or a pentyl group.

The compound represented by the general formula (N-3-2) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the improvement of Δε is emphasized, it is preferable to set the content high, when the solubility at low temperature is emphasized, the effect is high when the content is set high, and _{when the TNI} is emphasized, the content is set high. The effect is high when set to a small value. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (N-3-2) with respect to the total amount of the composition of the present invention is 3%, 5%, 10% and 13%. , 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%. The upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6 % And 5%.

Further, the compound represented by the general formula (N-3-2) is a compound selected from the compound group represented by the formulas (N-3-2.1) to (N-3-2.3). It is preferable to have.

The third component is a compound selected from the compounds represented by the general formula (J) and the general formula (K), and it is preferable that the liquid crystal composition contains one or more of the compounds. These compounds are dielectrically positive compounds (the sign of Δε is positive and their absolute value is greater than 2).

(In the formula, R ^J1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent −CH ₂ − in the alkyl group are independently −CH = CH−, −. It may be replaced by C≡C−, −O−, −CO−, −COO− or −OCO−.
n ^J1 represents 0, 1, 2, 3 or 4
A ^J1 , A ^J2 and A ^J3 are independent of each other.
(A) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - may be replaced by -O-.)
(B) 1,4-phenylene group (one -CH = existing in this group or two or more -CH = not adjacent to each other may be replaced with -N =) and (c). Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or 1,2) , 3,4-Tetrahydronaphthalene-2,6-Diyl Group, one -CH = or two or more non-adjacent -CH = may be replaced with -N =).
Represents a group selected from the group consisting of, and the above groups (a), group (b) and group (c) are independently cyano groups, fluorine atoms, chlorine atoms, methyl groups, trifluoromethyl groups or trifluoro groups. It may be substituted with a methoxy group,
Z ^J1 and ^{Z J2} each independently represent a single _{bond, -CH 2 CH 2 -, -} (CH 2) 4 -, - OCH 2 -, - CH 2 O -, - OCF 2 -, - CF 2 O-, Represents -COO-, -OCO- or -C≡C-
When n ^J1 is 2, 3 or 4 and there ^{are a plurality of A J2s} , they may be the same or different, and when n ^J1 is 2, 3 or 4 and there are a plurality of ^{Z J1s.} If so, they may be the same or different,
^XJ1 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group. )
In the general formula ^{(J), R J1} is an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, alkenyloxy of alkenyl or 2 to 8 carbon atoms having from 2 to 8 carbon atoms A group is preferable, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms is preferable. Alkyl groups having 1 to 5 or alkoxy groups having 2 to 5 carbon atoms are more preferable, alkyl groups having 2 to 5 carbon atoms or alkoxy groups having 2 to 3 carbon atoms are further preferable, and alkoxy groups having 3 carbon atoms are more preferable. (Propenyl group) is particularly preferable.

Preferably R ^J1 is an alkyl group in the case of emphasizing reliability, it is preferred when emphasizing a reduction in viscosity is an alkenyl group.

When the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon. An alkoxy group having 4 to 5 atoms is preferable, and when the ring structure to which the alkoxy group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms or a linear chain is used. Alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from the groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure to which the alkenyl group is bonded.)

A ^J1 , A ^J2 and A ^J3 are preferably aromatic when it is required to increase Δn independently, and are preferably aliphatic in order to improve the response rate, and trans-. 1,4-Cyclohexylene group, 1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene It preferably represents a -2,6-diyl group, a decahydronaphthalene-2,6-diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, which are substituted with fluorine atoms. It may be preferable, and it is more preferable to represent the following structure.

It is more preferable to represent the following structure.

Z ^J1 and Z ^J2 independently represent -CH ₂ O-, -OCH _2- , -CF ₂ O-, -CH ₂ CH _2- , -CF ₂ CF _2- or single bond, respectively. OCH _2- , -CF ₂ O-, -CH ₂ CH _2- or single bond is more preferred, and -OCH _2- , -CF ₂ O- or single bond is particularly preferred.

^XJ1 is preferably a fluorine atom or a trifluoromethoxy group, preferably a fluorine atom.

n ^J1 is preferably 0, 1, 2 or 3, preferably 0, 1 or 2, 0 or 1 is preferable in the case of focusing on improvement of [Delta] _[epsilon], in the case of emphasizing _{T NI} 1 or 2 preferable.

The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three types as one embodiment of the present invention. Furthermore, in another embodiment of the present invention, there are four types, five types, six types, and seven or more types.

In the composition of the present invention, the content of the compound represented by the general formula (J) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, seizure, and the like. It is necessary to make appropriate adjustments according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the general formula (J) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, and 30%. 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of the content is, for example, 95%, 85%, 75%, 65%, 55% in one embodiment of the invention, relative to the total amount of the composition of the invention. Yes, 45%, 35%, 25%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Preferably R ^J1 is an alkyl group in the case of emphasizing reliability, it is preferred when emphasizing a reduction in viscosity is an alkenyl group.

As the compound represented by the general formula (J), the compound represented by the general formula (M) and the compound represented by the general formula (K) are preferable.

The composition of the present invention preferably contains one or more compounds represented by the general formula (M). These compounds are dielectrically positive compounds (Δε is greater than 2).

^{(Wherein, R M1} represents an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more -CH ₂ in the alkyl group - are each independently -CH = CH -, - It may be replaced by C≡C−, −O−, −CO−, −COO− or −OCO−.
n ^M1 represents 0, 1, 2, 3 or 4
^AM1 and ^AM2 are independent of each other
(A) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - may be replaced by -O- or -S- (May be) and (b) 1,4-phenylene group (one -CH = existing in this group or two or more -CH = not adjacent to each other may be replaced with -N =).
Represents a group selected from the group consisting of, and the hydrogen atoms on the above groups (a) and (b) may be independently substituted with cyano groups, fluorine atoms or chlorine atoms, respectively.
Z ^M1 and ^{Z M2} each independently represent a single _{bond, -CH 2 CH 2 -, -} (CH 2) 4 -, - OCH 2 -, - CH 2 O -, - OCF 2 -, - CF 2 O-, Represents -COO-, -OCO- or -C≡C-
When n ^M1 is 2, 3 or 4 and there ^{are a plurality of A M2s} , they may be the same or different, and when n ^M1 is 2, 3 or 4 and there are a plurality of ^{Z M1s.} If so, they may be the same or different,
X ^M1 and X ^M3 independently represent a hydrogen atom, a chlorine atom or a fluorine atom, respectively.
X ^M2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group.

In the general formula (M), ^RM1 is an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy having 2 to 8 carbon atoms. A group is preferable, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms is preferable. Alkyl groups having 1 to 5 or alkoxy groups having 2 to 5 carbon atoms are more preferable, alkyl groups having 2 to 5 carbon atoms or alkoxy groups having 2 to 3 carbon atoms are further preferable, and alkoxy groups having 3 carbon atoms are more preferable. (Propenyl group) is particularly preferable.

Preferably R ^M1 is an alkyl group in the case of emphasizing reliability, it is preferred when emphasizing a reduction in viscosity is an alkenyl group.

When the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon. An alkoxy group having 4 to 5 atoms is preferable, and when the ring structure to which the alkoxy group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms or a linear chain is used. Alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from the groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure to which the alkenyl group is bonded.)

Preferably when it is desired A ^M1 and A ^M2 is to increase the Δn each independently is an aromatic, preferably to improve the response speed is an aliphatic, trans-1,4 -Cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group, 2, 3-Difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene-2,6- It is preferable to represent a diyl group, a decahydronaphthalene-2,6-diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and more preferably to represent the following structure.

It is more preferable to represent the following structure.

Z ^M1 and ^{Z M2} each _{independently -CH 2 O -, - CF 2} O -, - CH 2 CH 2 -, - CF 2 CF 2 - or preferably a single bond, _-CF 2 O-, -CH ₂ CH _2- or single bond is more preferred, and -CF ₂ O- or single bond is particularly preferred.

n ^M1 is preferably 0, 1, 2 or 3, preferably 0, 1 or 2, 0 or 1 is preferable in the case of focusing on improvement of [Delta] _[epsilon], in the case of emphasizing _{T NI} 1 or 2 preferable.

The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three types as one embodiment of the present invention. Furthermore, in another embodiment of the present invention, there are four types, five types, six types, and seven or more types.

In the composition of the present invention, the content of the compound represented by the general formula (M) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, seizure, and the like. It is necessary to make appropriate adjustments according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (M) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, and 40. %, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of the content is, for example, 95%, 85%, 75%, 65%, 55% in one embodiment of the invention, relative to the total amount of the composition of the invention. Yes, 45%, 35%, 25%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

The compound represented by the general formula (M) is preferably a compound selected from the compound group represented by the general formula (M-1), for example.

(In the formula, ^RM11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M11 to X ^M15 are independently hydrogens. Represents an atom or a fluorine atom, and Y ^M11 represents a fluorine atom or an OCI _3.)
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (M-1) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, and 8%. 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-1) is preferably a compound represented by the formulas (M-1.1) to (M-1.4), and the formula (M-1) is preferable. The compound represented by M-1.1) or the formula (M-1.2) is preferable, and the compound represented by the formula (M-1.2) is more preferable. It is also preferable to use the compounds represented by the formula (M-1.1) or the formula (M-1.2) at the same time.

The lower limit of the preferable content of the compound represented by the formula (M-1.1) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 6%. Is. The preferred upper limit of the content is 15%, 13%, 10%, 8% and 5%.

The lower limit of the preferable content of the compound represented by the formula (M-1.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 6%. Is. The preferred upper limit of content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. Is.

The lower limit of the total preferable content of the compounds represented by the formulas (M-1.1) and (M-1.2) with respect to the total amount of the composition of the present invention is 1%, which is 2%. %, 5%, 6%. The preferred upper limit of content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. Is.

Further, the compound represented by the general formula (M) is preferably a compound selected from the compound group represented by the general formula (M-2), for example.

(In the formula, ^RM21 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M21 and X ^M22 are independently hydrogens. Represents an atom or a fluorine atom, and Y ^M21 represents a fluorine atom, a chlorine atom or an OCI _3).
The lower limit of the preferable content of the compound represented by the formula (M-1) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, and 8%. 10%, 13%, 15%, 18%, 20%, 22%, 25%, 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which the _TNI of the composition of the present invention is kept high and seizure is less likely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-2) is preferably a compound represented by the formulas (M-2.1) to (M-2.5), and the compound represented by the formula (M-2. It is preferably a compound represented by 3) or / and the formula (M-2.5).

The lower limit of the preferable content of the compound represented by the formula (M-2.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 6%. Is. The preferred upper limit of the content is 15%, 13%, 10%, 8% and 5%.

The lower limit of the preferable content of the compound represented by the formula (M-2.3) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 6%. Is. The preferred upper limit of content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. Is.

The lower limit of the preferable content of the compound represented by the formula (M-2.5) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 6%. Is. The preferred upper limit of content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. Is.

The lower limit of the total preferable content of the compounds represented by the formulas (M-2.2), (M-2.3) and (M-2.5) with respect to the total amount of the composition of the present invention. Is 1%, 2%, 5%, and 6%. The preferred upper limit of content is 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. Is.

The content is preferably 1% or more, more preferably 5% or more, further preferably 8% or more, further preferably 10% or more, still more preferably 14% or more, based on the total amount of the composition of the present invention. , 16% or more is particularly preferable. Further, in consideration of solubility at low temperature, transition temperature, electrical reliability, etc., the maximum ratio is preferably kept at 30% or less, more preferably 25% or less, more preferably 22% or less, and 20%. Less than is particularly preferred.

The compound represented by the general formula (M) used in the composition of the present invention is preferably a compound represented by the general formula (M-3).

(In the formula, ^RM31 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M31 to X ^M36 are independently hydrogens. represents an atom or a fluorine ^{atom, Y M31} represents a fluorine atom, a chlorine atom or OCF _3.)
The compounds that can be combined are not particularly limited, but it is preferable to combine one to two or more in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence and the like.

The content of the compound represented by the general formula (M-3) is an upper limit value and a lower limit value for each embodiment in consideration of characteristics such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. There is a value.

The lower limit of the preferable content of the compound represented by the formula (M-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 18%, 15%, 13%, 10%, 8% and 5%.

Further, the compound represented by the general formula (M-3) used in the composition of the present invention is specifically represented by the formulas (M-3.1) to (M-3.8). It is preferably a compound, and more preferably contains a compound represented by the formula (M-3.1) and / or the formula (M-3.2).

The lower limit of the preferable content of the compound represented by the formula (M-3.1) with respect to the total amount of the composition of the present invention is 1%, 2%, 4% and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 18%, 15%, 13%, 10%, 8% and 5%.

The lower limit of the preferable content of the compound represented by the formula (M-3.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 4% and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 18%, 15%, 13%, 10%, 8% and 5%.

The lower limit of the total preferable content of the compounds represented by the formulas (M-3.1) and (M-3.2) with respect to the total amount of the composition of the present invention is 1%, which is 2%. %, 4%, 5%, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 18%, 15%, 13%, 10%, 8% and 5%.

Further, the compound represented by the general formula (M) is preferably a compound selected from the group represented by the general formula (M-4).

(In the formula, ^RM41 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M41 to X ^M48 are independently fluorine. Represents an atom or a hydrogen atom, where Y ^M41 represents a fluorine atom, a chlorine atom or an OCI _3.)
The compounds that can be combined are not particularly limited, but it is preferable to combine one, two, or three or more in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like.

The content of the compound represented by the general formula (M-4) is an upper limit value and a lower limit value for each embodiment in consideration of characteristics such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. There is a value.

The lower limit of the preferable content of the compound represented by the formula (M-4) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When the composition of the present invention is used for a liquid crystal display device having a small cell gap, it is suitable to increase the content of the compound represented by the general formula (M-4). When used for a liquid crystal display element having a small drive voltage, it is suitable to increase the content of the compound represented by the general formula (M-4). Further, when used for a liquid crystal display element used in a low temperature environment, it is suitable to reduce the content of the compound represented by the general formula (M-4). When the composition is used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (M-4).

Further, the compound represented by the general formula (M-4) used in the composition of the present invention is specifically represented by the formulas (M-4.1) to (M-4.4). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-4.2) to (M-4.4), and the compound represented by the formula (M-4.2). Is more preferable.

Further, the compound represented by the general formula (M) is preferably a compound represented by the general formula (M-5).

(In the formula, ^RM51 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M51 and X ^{M 52} are independent hydrogen atoms, respectively. Represents an ^{atom or a fluorine atom, where Y M51} represents a fluorine atom, a chlorine atom or an OCI _3).
The types of compounds that can be combined are not limited, but they are appropriately combined and used for each embodiment in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like. For example, one embodiment of the present invention has one type, another embodiment has two types, yet another embodiment has three types, yet another embodiment has four types, and yet another embodiment has five types. In yet another embodiment, six or more types are combined.

The lower limit of the preferable content of the compound represented by the formula (M-5) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 50%, 45%, 40%, 35%, 33%, 30%, 28%, 25%, 23%. , 20%, 18%, 15%, 13%, 10%, 8%, 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which the _TNI of the composition of the present invention is kept high and seizure is less likely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-5) is preferably a compound represented by the formulas (M-5.1) to (M-5.4), and the compound represented by the formula (M-5. It is preferable that the compound is represented by the formula (M-5.4) from 1).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 5%, 8%, 10%, 13%. Yes, it is 15%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-5) is preferably a compound represented by the formulas (M-5.11) to (M-5.17), and the compound represented by the formula (M-5.17) is preferable. 11), the compound represented by the formula (M-5.13) and the formula (M-5.17) is preferable.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 5%, 8%, 10%, 13%. Yes, it is 15%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-5) is preferably a compound represented by the formulas (M-5.21) to (M-5.28), and the compound represented by the formula (M-5. 21), the compound represented by the formula (M-5.22), the formula (M-5.23) and the formula (M-5.25) is preferable.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 5%, 8%, 10%, 13%. Yes, 15%, 18%, 20%, 22%, 25%, 30%. The preferred upper limit of content is 40%, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%. , 15%, 13%, 10%, 8%, 5%.

Further, the compound represented by the general formula (M) is preferably a compound represented by the general formula (M-6).

(In the formula, ^RM61 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^M61 to X ^M64 are independently fluorine. Represents an atom or a hydrogen atom, where Y ^M61 represents a fluorine atom, a chlorine atom or an OCI _3).
There is no limitation on the types of compounds that can be combined, but they are appropriately combined for each embodiment in consideration of solubility at low temperature, transition temperature, electrical reliability, birefringence, and the like.

The lower limit of the preferable content of the compound represented by the formula (M-6) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When the composition of the present invention is used for a liquid crystal display device having a small driving voltage, it is suitable to increase the content of the compound represented by the general formula (M-6). Further, in the case of a composition used for a liquid crystal display element having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (M-6).

Further, the compound represented by the general formula (M-6) is preferably a compound represented by the formulas (M-6.1) to (M-6.4), and above all, the compound represented by the formula (M-6). It is preferable to contain a compound represented by M-6.2) and the formula (M-6.4).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-6) is preferably a compound represented by the formulas (M-6.11) to (M-6.14), and above all, the compound represented by the formula (M-6.14). It is preferable to contain a compound represented by M-6.12) and the formula (M-6.14).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-6) is preferably a compound represented by the formulas (M-6.21) to (M-6.24), and above all, the compound represented by the formula (M-6.24). It is preferable to contain the compounds represented by M-6.21), the formula (M-6.22) and the formula (M-6.24).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-6) is preferably a compound represented by the formulas (M-6.31) to (M-6.34). Among them, it is preferable to contain the compounds represented by the formulas (M-6.31) and (M-6.32).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-6) is preferably a compound represented by the formulas (M-6.41) to (M-6.44), and above all, the compound represented by the formula (M-6.44) is preferable. It is preferable to contain the compound represented by M-6.42).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M) is preferably a compound selected from the compound group represented by the general formula (M-7).

(In the formula, X ^M71 to X ^M76 independently represent a fluorine atom or a hydrogen atom, and ^RM71 is an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 2 to 5 carbon atoms, or 1 to 1 carbon atoms. Represents an alkoxy group of 4, and Y ^M71 represents a hydrogen atom or OCF _3.)
The types of compounds that can be combined are not particularly limited, but it is preferable to contain 1 to 2 types of these compounds, more preferably 1 to 3 types, and 1 to 4 types to be contained. Is even more preferable.

The content of the compound represented by the general formula (M-7) is an upper limit value and a lower limit value for each embodiment in consideration of characteristics such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. There is a value.

The lower limit of the preferable content of the compound represented by the formula (M-7) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. , 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When the composition of the present invention is used for a liquid crystal display device having a small cell gap, it is suitable to increase the content of the compound represented by the general formula (M-7). When used for a liquid crystal display element having a small drive voltage, it is suitable to increase the content of the compound represented by the general formula (M-7). Further, when it is used for a liquid crystal display element used in a low temperature environment, it is suitable to reduce the content of the compound represented by the general formula (M-7). When the composition is used for a liquid crystal display device having a high response speed, it is suitable to reduce the content of the compound represented by the general formula (M-7).

Further, the compound represented by the general formula (M-7) is preferably a compound represented by the formulas (M-7.1) to (M-7.4), and the compound represented by the formula (M-7. It is preferably a compound represented by 2).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-7) is preferably a compound represented by the formulas (M-7.11) to (M-7.14), and the compound represented by the formula (M-7. 11) and the compound represented by the formula (M-7.12) are preferable.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-7) is preferably a compound represented by the formulas (M-7.21) to (M-7.24), and the compound represented by the formula (M-7. It is preferably a compound represented by 21) and the formula (M-7.22).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M) is preferably a compound represented by the general formula (M-8).

(In the formula, X ^M81 to X ^M84 independently represent a fluorine atom or a hydrogen atom, Y ^M81 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM81 is an alkyl group having 1 to 5 carbon atoms. Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and ^{AM81 and AM82} are independently 1,4-cyclohexylene groups, 1,4-phenylene groups or

However, the hydrogen atom on the 1,4-phenylene group may be substituted with a fluorine atom. )
The lower limit of the preferable content of the compound represented by the general formula (M-8) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.1) to (M-8.4). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-8.1) and (M-8.2).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.11) to (M-8.14). It is preferably a compound, and more preferably contains a compound represented by the formula (M-8.12).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.21) to (M-8.24). It is preferably a compound, and more preferably contains a compound represented by the formula (M-8.22).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.31) to (M-8.34). It is preferably a compound, and more preferably contains a compound represented by the formula (M-8.32).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.41) to (M-8.44). It is preferably a compound, and more preferably contains a compound represented by the formula (M-8.42).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M-8) used in the composition of the present invention is specifically represented by the formulas (M-8.51) to (M-8.54). It is preferably a compound, and more preferably contains a compound represented by the formula (M-8.52).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

Further, the compound represented by the general formula (M) may have the following partial structure in its structure.

(The black dots in the equation represent carbon atoms in the ring structure to which the above partial structures are bonded.)
As the compound having the above partial structure, it is preferable that the compound is represented by the general formulas (M-10) to (M-18).

The compound represented by the general formula (M-10) is as follows.

(In the formula, X ^M101 and X ^M102 independently represent a fluorine atom or a hydrogen atom, Y ^M101 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM101 is an alkyl group having 1 to 5 carbon atoms. Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and ^{WM101 and WM102} independently _{represent -CH 2-} or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-10) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-10) used in the composition of the present invention is specifically represented by the formulas (M-10.12) to (M-10.12). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-10.52) to (M-10.12).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-11) is as follows.

(In the formula, X ^{M111 to} X ^M114 independently represent a fluorine atom or a hydrogen atom, Y ^M111 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM111 is an alkyl group having 1 to 5 carbon atoms. Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.)
The lower limit of the preferable content of the compound represented by the general formula (M-11) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-11) used in the composition of the present invention is specifically represented by the formulas (M-11.1) to (M-11.8). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-11.1) to (M-11.4).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-12) is as follows.

(In the formula, X ^M121 and X ^M122 independently represent a fluorine atom or a hydrogen atom, Y ^M121 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM121 is an alkyl group having 1 to 5 carbon atoms. an alkenyl group or an alkoxy group having 1 to 4 carbon atoms 2 to 5 carbon ^{atoms, W M121} and ^{W M122} are each independently, -CH ₂ - represents a or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-12) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-12) used in the composition of the present invention is specifically represented by the formulas (M-12.12) to (M-12.12). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-12.5) to (M-12.8).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-13) is as follows.

(In the formula, X ^{M131 to} X ^M134 independently represent a fluorine atom or a hydrogen atom, Y ^M131 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM131 represents an alkyl group having 1 to 5 carbon atoms. an alkenyl group or an alkoxy group having 1 to 4 carbon atoms 2 to 5 carbon ^{atoms, W M131} and ^{W M132} are each independently, -CH ₂ - represents a or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-13) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-13) used in the composition of the present invention is specifically represented by the formulas (M-13.1) to (M-13.28). It is preferably a compound, and among them, formulas (M-13.1) to (M-13.4), (M-13.11) to (M-13.14), and (M-13.25) to ( It preferably contains the compound represented by M-13.28).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-14) is as follows.

(In the formula, X ^{M141 to} X ^M144 independently represent a fluorine atom or a hydrogen atom, Y ^M141 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM141 is an alkyl group having 1 to 5 carbon atoms. an alkenyl group or an alkoxy group having 1 to 4 carbon atoms 2 to 5 carbon ^{atoms, W M 141} and ^{W M142} are each independently, -CH ₂ - represents a or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-14) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-14) used in the composition of the present invention is specifically represented by the formulas (M-14.1) to (M-14.8). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-14.5) and (M-14.8).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-15) is as follows.

(In the formula, X ^M151 and X ^M152 independently represent a fluorine atom or a hydrogen atom, Y ^M151 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM151 is an alkyl group having 1 to 5 carbon atoms. an alkenyl group or an alkoxy group having 1 to 4 carbon atoms 2 to 5 carbon ^{atoms, W M151} and ^{W M152} are each independently, -CH ₂ - represents a or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-15) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-15) used in the composition of the present invention is specifically represented by the formulas (M-15.1) to (M-15.14). It is preferably a compound, and contains compounds represented by formulas (M-15.5) to (M-15.8) and formulas (M-15.11) to (M-15.14). It is preferable to do so.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-16) is as follows.

(In the formula, X ^{M161 to} X ^M164 independently represent a fluorine atom or a hydrogen atom, Y ^M161 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM161 is an alkyl group having 1 to 5 carbon atoms. Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.)
The lower limit of the preferable content of the compound represented by the general formula (M-16) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-16) used in the composition of the present invention is specifically represented by the formulas (M-16.1) to (M-16.8). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-16.1) to (M-16.4).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-17) is as follows.

^{(Wherein, X M171 ~X M174} independently represents a fluorine atom or a hydrogen ^{atom, Y M171} fluorine atom, a chlorine atom or -OCF ^{_3, R M171} is an alkyl group having 1 to 5 carbon atoms, an alkenyl group or an alkoxy group having 1 to 4 carbon atoms 2 to 5 carbon ^{atoms, W M171} and ^{W M172} are each independently, -CH ₂ - represents a or -O-).
The lower limit of the preferable content of the compound represented by the general formula (M-17) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-17) used in the composition of the present invention is specifically represented by the formulas (M-17.1) to (M-17.52). It is preferably a compound, and among them, formulas (M-17.9) to (M-17.12), formulas (M-17.21) to formulas (M-17.28), and formulas (M-17. It is preferable to contain a compound represented by the formula (M-17.48) from 45).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (M-18) is as follows.

(In the formula, X ^{M181 to} X ^M186 independently represent a fluorine atom or a hydrogen atom, Y ^M181 represents a fluorine atom, a chlorine atom or −OCF ₃ , and ^RM181 is an alkyl group having 1 to 5 carbon atoms. Represents an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.)
The lower limit of the preferable content of the compound represented by the general formula (M-18) with respect to the total amount of the composition of the present invention is 1%, 2%, 4%, and 5%. Yes, 8%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when a composition in which seizure is unlikely to occur is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (M-18) used in the composition of the present invention is specifically represented by the formulas (M-18.1) to (M-18.12). It is preferably a compound, and more preferably contains a compound represented by the formulas (M-18.5) to (M-18.8).

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is represented by the following.

(In the formula, ^RK1 represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent −CH ₂ −s in the alkyl group are independently −CH = CH−, −. It may be replaced by C≡C−, −O−, −CO−, −COO− or −OCO−.
n ^K1 represents 0, 1, 2, 3 or 4
^AK1 and ^AK2 are independent of each other
(A) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - may be replaced by -O- or -S- (May be) and (b) 1,4-phenylene group (one -CH = existing in this group or two or more -CH = not adjacent to each other may be replaced with -N =).
Represents a group selected from the group consisting of, and the hydrogen atoms on the above groups (a) and (b) may be independently substituted with cyano groups, fluorine atoms or chlorine atoms, respectively.
Z ^K1 and ^{Z K2} each independently represent a single _{bond, -CH 2 CH 2 -, -} (CH 2) 4 -, - OCH 2 -, - CH 2 O -, - OCF 2 -, - CF 2 O-, Represents −COO−, −OCO− or −C≡C−
When n ^K1 is 2, 3 or 4 and there ^{are a plurality of AK2} , they may be the same or different, and when ^nK1 is 2, 3 or 4 and there are a plurality of ^{Z K1s.} If so, they may be the same or different,
X ^K1 and X ^K3 independently represent a hydrogen atom, a chlorine atom or a fluorine atom, respectively.
X ^K2 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a fluoromethoxy group, a difluoromethoxy group, a trifluoromethoxy group or a 2,2,2-trifluoroethyl group. )
In the general formula (K), ^RK1 is an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy having 2 to 8 carbon atoms. A group is preferable, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyloxy group having 2 to 5 carbon atoms is preferable. Alkyl groups having 1 to 5 or alkoxy groups having 2 to 5 carbon atoms are more preferable, alkyl groups having 2 to 5 carbon atoms or alkoxy groups having 2 to 3 carbon atoms are more preferable, and alkenyl groups having 3 carbon atoms are more preferable. (Propenyl group) is particularly preferable.

Preferably R ^K1 is an alkyl group in the case of emphasizing reliability, it is preferred when emphasizing a reduction in viscosity is an alkenyl group.

When the ring structure to which it is bonded is a phenyl group (aromatic), a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and carbon. An alkoxy group having 4 to 5 atoms is preferable, and when the ring structure to which the alkoxy group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, a linear alkyl group having 1 to 5 carbon atoms or a linear chain is used. Alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from the groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure to which the alkenyl group is bonded.)

Preferably when it is desired A ^K1 and A ^K2 is to increase the Δn each independently is an aromatic, preferably to improve the response speed is an aliphatic, trans-1,4 -Cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group, 2, 3-Difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene-2,6- It is preferable to represent a diyl group, a decahydronaphthalene-2,6-diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and more preferably to represent the following structure.

It is more preferable to represent the following structure.

Z ^K1 and ^{Z K2} are each _{independently -CH 2 O -, - CF 2} O -, - CH 2 CH 2 -, - CF 2 CF 2 - or preferably a single bond, _-CF 2 O-, -CH ₂ CH _2- or single bond is more preferred, and -CF ₂ O- or single bond is particularly preferred.

n ^K1 is preferably 0, 1, 2 or 3, preferably 0, 1 or 2, 0 or 1 is preferable in the case of focusing on improvement of [Delta] _[epsilon], in the case of emphasizing _{T NI} 1 or 2 preferable.

The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three types as one embodiment of the present invention. Furthermore, in another embodiment of the present invention, there are four types, five types, six types, and seven or more types.

In the composition of the present invention, the content of the compound represented by the general formula (K) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, seizure, and the like. It is necessary to make appropriate adjustments according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (K) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, and 40. %, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of the content is, for example, 95%, 85%, 75%, 65%, 55% in one embodiment of the invention, relative to the total amount of the composition of the invention. Yes, 45%, 35%, 25%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-1), for example.

(In the formula, ^RK11 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^{K11 to} X ^K14 are independently hydrogens. represents an atom or a fluorine ^{atom, Y K11} represents a fluorine atom or OCF _3.)
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-1) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-1) is preferably a compound represented by the formulas (K-1.1) to (K-1.4), and is preferably a compound represented by the formula (K-1.4). The compound represented by K-1.1) or the formula (K-1.2) is preferable, and the compound represented by the formula (K-1.2) is more preferable. It is also preferable to use the compounds represented by the formula (K-1.1) or the formula (K-1.2) at the same time.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-2), for example.

(In the formula, ^RK21 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^{K21 to} X ^K24 are independently hydrogens. Represents an atom or a fluorine atom, and ^YK21 represents a fluorine atom or OCF ₃₎
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-2) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-2) is preferably a compound represented by the formulas (K-2.1) to (K-2.6), and the compound represented by the formula (K-2.6) is preferable. The compound represented by K-2.5) or the formula (K-2.6) is preferable, and the compound represented by the formula (K-2.6) is more preferable. It is also preferable to use the compounds represented by the formula (K-2.5) or the formula (K-2.6) at the same time.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-3), for example.

(In the formula, ^RK31 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^{K31 to} X ^K36 are independently hydrogens. Represents an atom or a fluorine atom, and ^YK31 represents a fluorine atom or an OCI _3).
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-3) is preferably a compound represented by the formulas (K-3.1) to (K-3.4), and the compound represented by the formula (K-3) is preferable. It is more preferable that the compound is represented by K-3.1) or the formula (K-3.2). It is also preferable to use the compounds represented by the formulas (K-3.1) and (K-3.2) at the same time.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-4), for example.

(In the formula, ^RK41 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and X ^{K41 to} X ^K46 are independently hydrogens. Represents an atom or a fluorine atom, Y ^K41 represents a fluorine atom or OCF ₃ , and Z ^K41 represents -OCH _2- , -CH ₂ O-, -OCF _2- or -CF ₂ O-).
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-4) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-4) is preferably a compound represented by the formulas (K-4.1) to (K-4.18), and is preferably a compound represented by the formula (K-4.18). Compounds represented by K-4.1), formula (K-4.2), formula (K-4.11), and (K-4.12) are more preferable. It is also preferable to use the compounds represented by the formulas (K-4.1), (K-4.2), (K-4.11) and (K-4.12) at the same time.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-5), for example.

(In the formula, ^RK51 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^{K51 to} X ^K56 are independently hydrogens. Represents an atom or a fluorine atom, Y ^K51 represents a fluorine atom or OCF ₃ , and Z ^K51 represents -OCH _2- , -CH ₂ O-, -OCF _2- or -CF ₂ O-).
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-5) with respect to the total amount of the composition of the present invention is 1%, 2%, 5%, and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-5) is preferably a compound represented by the formulas (K-5.1) to (K-5.18), and is preferably a compound represented by the formula (K-5.18). The compounds represented by the formulas (K-5.14) from K-5.11) are preferable, and the compounds represented by the formula (K-5.12) are more preferable.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The compound represented by the general formula (K) is preferably a compound selected from the compound group represented by the general formula (K-6), for example.

(In the formula, ^RK61 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and X ^{K61 to} X ^K68 are independently hydrogens. represents an atom or a fluorine ^{atom, Y K61} represents a fluorine atom or OCF ^{_3, Z K61} is _{-OCH 2 -, - CH 2 O} -, - OCF 2 - or an _-CF 2 O-).
The types of compounds that can be combined are not particularly limited, but they are used in combination according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, and three or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (K-6) with respect to the total amount of the composition of the present invention is 1%, 2%, 5% and 8%. It is 10%, 13%, 15%, 18%, 20%, 22%, 25%, and 30%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

When a composition having a low viscosity and a high response rate is required, it is preferable to lower the lower limit value and lower the upper limit value. _{Further, when the TNI} of the composition of the present invention is kept high and a composition having good temperature stability is required, it is preferable to lower the lower limit value and lower the upper limit value. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable to raise the above lower limit value and raise the upper limit value.

Further, the compound represented by the general formula (K-6) is preferably a compound represented by the formulas (K-6.1) to (K-6.18), and the compound represented by the formula (K-6.18) is preferable. The compounds represented by the formulas (K-6.18) from K-6.15) are preferable, and the compounds represented by the formulas (K-6.16) and (K-6.17) are more preferable. It is also preferable to use the compounds represented by the formulas (K-6.16) and the formula (K-6.17) at the same time.

The lower limit of the preferred content of these compounds relative to the total amount of the compositions of the present invention is 1%, 2%, 4%, 5%, 8%, 10%. Yes, 13%, 15%, 18%, 20%. The preferred upper limit of content is 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10%. It is 8% and 5%.

The fourth component is a compound represented by the general formula (L), and it is preferable that the liquid crystal composition contains one kind or two or more kinds of the compound. The compound represented by the general formula (L) corresponds to a dielectrically almost neutral non-polar liquid crystal compound (value of Δε is -2 to 2).

(Wherein, R ^L1 and R ^L2 represent each independently an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more -CH 2 in the alkyl group _- is independently It may be replaced by −CH = CH−, −C≡C−, −O−, −CO−, −COO− or −OCO−.
n ^L1 represents 0, 1, 2 or 3
A ^{L1, A L2,} and ^{A L3} each independently (a) 1,4-cyclohexylene group (this is present in the group one -CH ₂ - or nonadjacent two or more -CH ₂ - May be replaced with -O-) and (b) 1,4-phenylene group (one -CH = present in this group or two or more non-adjacent -CH = -N May be replaced with =)
(C) Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One -CH = existing in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent -CH = may be replaced with -N =. )
Represents a group selected from the group consisting of, and the above groups (a), groups (b) and groups (c) may be independently substituted with cyano groups, fluorine atoms or chlorine atoms, respectively.
Z ^L1 and ^{Z L2} each independently represent a single _{bond, -CH 2 CH 2 -, -} (CH 2) 4 -, - OCH 2 -, - CH 2 O -, - COO -, - OCO -, - OCF 2 Represents −, −CF ₂ O−, −CH = NN = CH−, −CH = CH−, −CF = CF− or −C≡C−.
If n ^L1 is 2 or 3 and there ^{are a plurality of A L2s} , they may be the same or different, and if n ^L1 is 2 or 3 and there are a plurality of ^{Z L2s, they may be the same or different.} May be the same or different, except for compounds represented by. )
The compound represented by the general formula (L) may be used alone or in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to desired performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The type of compound used is, for example, one type as one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types, three types, four types, five types, six types, seven types, eight types, nine types, and ten. More than a kind.

In the composition of the present invention, the content of the compound represented by the general formula (L) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, seizure, and the like. It is necessary to make appropriate adjustments according to the required performance such as dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, and 40. %, 50%, 55%, 60%, 65%, 70%, 75%, 80%. The preferred upper limit of the content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.

When a composition having a low viscosity and a high response rate is required, it is preferable that the above lower limit value is high and the upper limit value is high. Moreover, maintaining high T _NI of the compositions of the present invention, it is preferable if the temperature stability with good composition is required upper limit higher the lower limit of the above is high. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable that the above lower limit value is low and the upper limit value is low.

When reliability is important, ^{both RL1} and ^RL2 are preferably alkyl groups, and when reducing the volatility of the compound is important, they are preferably alkoxy groups, and reduction of viscosity is important. It is preferable that at least one of them is an alkenyl group.

The number of halogen atoms present in the molecule is preferably 0, 1, 2 or 3, preferably 0 or 1, and preferably 1 when compatibility with other liquid crystal molecules is important.

^RL1 and ^RL2 are linear alkyl groups having 1 to 5 carbon atoms and linear carbon atoms 1 to 4 when the ring structure to which they are bonded is a phenyl group (aromatic). The alkoxy group and the alkenyl group having 4 to 5 carbon atoms are preferable, and when the ring structure to which the alkoxy group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane, the linear carbon atom number is 1 to 5. Alkyl groups, linear alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferable. In order to stabilize the nematic phase, the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.

The alkenyl group is preferably selected from the groups represented by any of the formulas (R1) to (R5). (The black dots in each equation represent carbon atoms in the ring structure.)

n ^L1 is preferably 0 when the response speed is important, 2 or 3 is preferable for improving the upper limit temperature of the nematic phase, and 1 is preferable for balancing these. Further, in order to satisfy the properties required for the composition, it is preferable to combine compounds having different values.

Preferably A ^L1, A ^L2, and A ^L3 if it is required to increase the Δn is aromatic, preferably to improve the response speed is an aliphatic, independently trans - 1,4-Cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group , 1,4-Cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6 It preferably represents a −diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, more preferably the following structure.

It is more preferable to represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group.

Z ^L1 and Z ^L2 are preferably single-bonded when the response speed is important.

The compound represented by the general formula (L) preferably has 0 or 1 halogen atoms in the molecule.

The compound represented by the general formula (L) is preferably a compound selected from the compound group represented by the general formulas (L-1) to (L-8).

The compound represented by the general formula (L-1) is the following compound.

^{(Wherein, R L11} and ^{R L12} are each independently the same meaning as ^{R L1} and ^{R L2} in Formula (L).)
^RL11 and ^RL12 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. ..

The compound represented by the general formula (L-1) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

The lower limit of the preferable content is 1%, 2%, 3%, 5%, 7%, 10%, and 15% with respect to the total amount of the composition of the present invention. %, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%. The preferred upper limit of the content is 95%, 90%, 85%, 80%, 75%, 70%, 65% with respect to the total amount of the composition of the present invention. %, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%.

When a composition having a low viscosity and a high response rate is required, it is preferable that the above lower limit value is high and the upper limit value is high. Moreover, maintaining high T _NI of the compositions of the present invention, it is preferred if good composition temperature stability is required is the upper limit value in the lower limit of the above is moderate is moderate. Further, when it is desired to increase the dielectric anisotropy in order to keep the drive voltage low, it is preferable that the above lower limit value is low and the upper limit value is low.

The compound represented by the general formula (L-1) is preferably a compound selected from the compound group represented by the general formula (L-1-1).

(In the formula, ^RL12 has the same meaning as in the general formula (L-1).)
The compound represented by the general formula (L-1-1) is a compound selected from the compound group represented by the formulas (L-1-1.1) to (L-1-1.3). Is preferable, and it is preferable that the compound is represented by the formula (L-1-1.2) or the formula (L-1-1.3), and particularly, it is represented by the formula (L-1-1.3). It is preferably a compound.

The lower limit of the preferable content of the compound represented by the formula (L-1-1.3) with respect to the total amount of the composition of the present invention is 1%, 2% and 3%. It is 5%, 7%, and 10%. The upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, and 3%.

The compound represented by the general formula (L-1) is preferably a compound selected from the compound group represented by the general formula (L-1-2).

(In the formula, ^RL12 has the same meaning as in the general formula (L-1).)
The lower limit of the preferable content of the compound represented by the formula (L-1-2) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 15%. , 17%, 20%, 23%, 25%, 27%, 30%, 35%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 42%, 40%, 38, based on the total amount of the composition of the present invention. %, 35%, 33%, 30%.

Further, the compound represented by the general formula (L-1-2) is a compound selected from the compound group represented by the formulas (L-1-2.1) to (L-1-2.4). It is preferable that the compound is represented by the formulas (L-1-2.2) to (L-1-2.4). In particular, the compound represented by the formula (L-1-2.2) is preferable because it particularly improves the response rate of the composition of the present invention. Further, when obtaining the high _{T NI} than the response speed, it is preferable to use a compound represented by formula (L-1-2.3) or the formula (L-1-2.4). The content of the compounds represented by the formulas (L-1-2.3) and (L-1-2.4) is not preferably 30% or more in order to improve the solubility at a low temperature.

The lower limit of the preferable content of the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention is 10%, 15%, and 18%. 20%, 23%, 25%, 27%, 30%, 33%, 35%, 38%, 40%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 43%, 40%, 38, based on the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, 22%.

The lower limit of the total preferable content of the compound represented by the formula (L-1-1.3) and the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention. The values are 10%, 15%, 20%, 25%, 27%, 30%, 35%, and 40%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 43%, 40%, 38, based on the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, 22%.

The compound represented by the general formula (L-1) is preferably a compound selected from the compound group represented by the general formula (L-1-3).

(In the formula, ^RL13 and ^RL14 independently represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.)
^RL13 and ^RL14 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. ..

The lower limit of the preferable content of the compound represented by the formula (L-1-3) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 13%. , 15%, 17%, 20%, 23%, 25%, and 30%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 40%, 37%, 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 27%, 25%, 23%, 20%, 17%, 15%, 13%, 10 %.
Further, the compound represented by the general formula (L-1--3) is a compound selected from the compound group represented by the formulas (L-1-3.1) to (L-1-3.12). It is preferable that the compound is represented by the formula (L-1-3.1), the formula (L-1-3.3) or the formula (L-1-3.4). In particular, the compound represented by the formula (L-1-3.1) is preferable because it particularly improves the response rate of the composition of the present invention. Further, when obtaining the high _{T NI} than the response speed of the formula (L-1-3.3), the formula (L-1-3.4), the formula (L-1-3.11) and formula (L It is preferable to use the compound represented by -1-3.12). Total of compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12). The content of is not preferably 20% or more in order to improve the solubility at low temperature.

The lower limit of the preferable content of the compound represented by the formula (L-1-3.1) with respect to the total amount of the composition of the present invention is 1%, 2% and 3%. 5%, 7%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 17%, 15%, 13%, 10%, 8%, and 7% with respect to the total amount of the composition of the present invention. % And 6%.

The compound represented by the general formula (L-1) is preferably a compound selected from the compound group represented by the general formula (L-1-4) and / or (L-1-5).

(In the formula, ^RL15 and ^RL16 independently represent an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms.)
^RL15 and ^RL16 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. ..

The lower limit of the preferable content of the compound represented by the formula (L-1-4) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 13%. , 15%, 17%, and 20%. The preferred upper limit of the content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention. %.

The lower limit of the preferable content of the compound represented by the formula (L-1-5) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 13%. , 15%, 17%, and 20%. The preferred upper limit of the content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention. %.

Further, the compounds represented by the general formulas (L-1-4) and (L-1-5) are represented by the formulas (L-1-5.3) from the formulas (L-1-4.1). It is preferable that the compound is selected from the above-mentioned compound group, and the compound represented by the formula (L-1-4.2) or the formula (L-1-5.2) is preferable.

The lower limit of the preferable content of the compound represented by the formula (L-1-4.2) with respect to the total amount of the composition of the present invention is 1%, 2% and 3%. 5%, 7%, 10%, 13%, 15%, 18%, 20%. The preferred upper limit of the content is 20%, 17%, 15%, 13%, 10%, 8%, and 7% with respect to the total amount of the composition of the present invention. % And 6%.

Equation (L-1-1.3), Equation (L-1-2.2), Equation (L-1-3.1), Equation (L-1-3.3), Equation (L-1- It is preferable to combine two or more compounds selected from the compounds represented by 3.4), the formula (L-1-3.11) and the formula (L-1-3.12), and the formula (L-1). -1.3), formula (L-1-2.2), formula (L-1-3.1), formula (L-1-3.3), formula (L-1-3.4) and It is preferable to combine two or more compounds selected from the compounds represented by the formula (L-1-4.2), and the lower limit of the preferable content of the total content of these compounds is the composition of the present invention. 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18%, etc. , 20%, 23%, 25%, 27%, 30%, 33%, 35%, and the upper limit is relative to the total amount of the composition of the present invention. , 80%, 70%, 60%, 50%, 45%, 40%, 37%, 35%, 33%, 30%. , 28%, 25%, 23%, 20%. When the reliability of the composition is emphasized, the compounds represented by the formulas (L-1-3.1), (L-1-3.3) and (L-1-3.4)) are used. It is preferable to combine two or more compounds selected from the above, and when the response speed of the composition is important, it is represented by the formulas (L-1-1.3) and (L-1-2.2). It is preferable to combine two or more compounds selected from the above compounds.
The compound represented by the general formula (L-1) is preferably a compound selected from the compound group represented by the general formula (L-1-6).

(In the formula, ^RL17 and ^RL18 each independently represent a methyl group or a hydrogen atom.)
The lower limit of the preferable content of the compound represented by the formula (L-1-6) with respect to the total amount of the composition of the present invention is 1%, 5%, 10% and 15%. , 17%, 20%, 23%, 25%, 27%, 30%, 35%. The preferred upper limit of the content is 60%, 55%, 50%, 45%, 42%, 40%, 38, based on the total amount of the composition of the present invention. %, 35%, 33%, 30%.

Further, the compound represented by the general formula (L-1-6) is a compound selected from the compound group represented by the formulas (L-1-6.1) to (L-1-6.3). It is preferable to have.

The compound represented by the general formula (L-2) is the following compound.

^{(Wherein, R L21} and ^{R L22} are each independently the same meaning as ^{R L1} and ^{R L2} in Formula (L).)
^RL21 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and ^RL22 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or a carbon atom. Alkoxy groups of numbers 1 to 4 are preferable.

The compound represented by the general formula (L-1) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

When the solubility at low temperature is emphasized, the effect is high when the content is set high, and conversely, when the response speed is emphasized, the effect is high when the content is set low. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

The lower limit of the preferable content of the compound represented by the formula (L-2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7% and 10%. The upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, and 3%.

Further, the compound represented by the general formula (L-2) is preferably a compound selected from the compound group represented by the formulas (L-2.1) to (L-2.6), preferably the formula. It is preferably a compound represented by (L-2.1), formula (L-2.3), formula (L-2.4) and formula (L-2.6).

The compound represented by the general formula (L-3) is the following compound.

^{(Wherein, R L31} and ^{R L32} are each independently the same meaning as ^{R L1} and ^{R L2} in Formula (L).)
^RL31 and ^RL32 are preferably alkyl groups having 1 to 5 carbon atoms, alkenyl groups having 4 to 5 carbon atoms, or alkoxy groups having 1 to 4 carbon atoms, respectively.

The compound represented by the general formula (L-3) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (L-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7% and 10%. The upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, and 3%.

When obtaining a high birefringence highly effective when larger amount to set the content, on the contrary, when importance is attached to high T _NI highly effective when fewer to set the content. Further, when improving the dripping marks and the seizure characteristics, it is preferable to set the content range in the middle.

Further, the compound represented by the general formula (L-3) is preferably a compound selected from the compound group represented by the formulas (L-3.1) to (L-3.4), preferably the formula. It is preferably a compound represented by the formulas (L-3.7) from (L-3.2).

The compound represented by the general formula (L-4) is the following compound.

^{(Wherein, R L41} and ^{R L42} are each independently the same meaning as ^{R L1} and ^{R L2} in Formula (L).)
^RL41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and ^RL42 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or a carbon atom. Alkoxy groups of numbers 1 to 4 are preferable. )
The compound represented by the general formula (L-4) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-4) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dropping marks, and the like. It is necessary to make appropriate adjustments according to the required performance such as seizure and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. .. The upper limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. , 20%, 15%, 10%, 5%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formulas (L-4.1) to (L-4.3), for example.

Depending on the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., even if the compound represented by the formula (L-4.1) is contained, the formula (L) is contained. Even if it contains the compound represented by 4.2), it contains both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2). It may contain all the compounds represented by the formulas (L-4.1) to (L-4.3). The lower limit of the preferable content of the compound represented by the formula (L-4.1) or the formula (L-4.2) with respect to the total amount of the composition of the present invention is 3%, which is 5%. Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%, and preferred upper limits are 45, 40%. , 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%. ..

When both the compound represented by the formula (L-4.1) and the compound represented by the formula (L-4.2) are contained, both compounds are used with respect to the total amount of the composition of the present invention. The lower limit of the preferred content is 15%, 19%, 24%, 30%, and the preferred upper limit is 45, 40%, 35%, 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formulas (L-4.4) to (L-4.6), for example, preferably the compound represented by the formula (L-4.4). ) Is preferable.

Depending on the required performance such as solubility at low temperature, transition temperature, electrical reliability, birefringence, etc., even if the compound represented by the formula (L-4.4) is contained, the formula (L) Even if it contains the compound represented by −4.5), it contains both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5). You may be.

The lower limit of the preferable content of the compound represented by the formula (L-4.4) or the formula (L-4.5) with respect to the total amount of the composition of the present invention is 3%, which is 5%. Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%. Preferred upper limits are 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13 %, 10%, 8%.

When both the compound represented by the formula (L-4.4) and the compound represented by the formula (L-4.5) are contained, both compounds are used with respect to the total amount of the composition of the present invention. The lower limit of the preferred content is 15%, 19%, 24%, 30%, and the preferred upper limit is 45, 40%, 35%, 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.

The compound represented by the general formula (L-4) is preferably a compound represented by the formulas (L-4.7) to (L-4.10), and in particular, the compound represented by the formula (L-4. The compound represented by 9) is preferable.

The compound represented by the general formula (L-5) is the following compound.

^{(Wherein, R L51} and ^{R L52} are each independently the same meaning as ^{R L1} and ^{R L2} in Formula (L).)
^RL51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and ^RL52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or a carbon atom. Alkoxy groups of numbers 1 to 4 are preferable.

The compound represented by the general formula (L-5) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-5) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dropping marks, and the like. It is necessary to make appropriate adjustments according to the required performance such as seizure and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. .. The upper limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. , 20%, 15%, 10%, 5% The compound represented by the general formula (L-5) is the formula (L-5.1) or the formula (L-5.2). ) Is preferable, and a compound represented by the formula (L-5.1) is particularly preferable.

The lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-5) is preferably a compound represented by the formula (L-5.3) or the formula (L-5.4).

The lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-5) is preferably a compound selected from the compound group represented by the formulas (L-5.5) to (L-5.7), and particularly the compound represented by the formula (L-5). It is preferably a compound represented by L-5.7).

The lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-6) is the following compound.

^{(Wherein, R L61} and ^{R L62} each independently represent the same meaning as ^{R L1} and ^{R L2} in Formula ^{(L), X L61} and ^{X L62} each independently represents a hydrogen atom or a fluorine atom. )
^{Each of RL61} and ^RL62 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and ^{one of XL61 and XL62} is a fluorine atom and the other is a hydrogen atom. Is preferable.

The compound represented by the general formula (L-6) can be used alone, or two or more compounds can be used in combination. The types of compounds that can be combined are not particularly limited, but they are appropriately combined and used according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, four types, and five or more types as one embodiment of the present invention.

The lower limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40%. .. The upper limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. , 20%, 15%, 10%, 5%. When the emphasis is on increasing Δn, it is preferable to increase the content, and when the emphasis is on precipitation at a low temperature, the content is preferably small.

The compound represented by the general formula (L-6) is preferably a compound represented by the formulas (L-6.1) to (L-6.9).

The types of compounds that can be combined are not particularly limited, but it is preferable to contain 1 to 3 types of these compounds, and even more preferably 1 to 4 types. Further, since the wide molecular weight distribution of the selected compound is also effective for solubility, for example, one kind from the compounds represented by the formula (L-6.1) or (L-6.2), the formula (L-). One type from the compound represented by 6.4) or (L-6.5), one type from the compound represented by the formula (L-6.6) or the formula (L-6.7), one type from the compound represented by the formula (L-6.7), the formula (L). It is preferable to select one kind of compound from the compounds represented by −6.8) or (L-6.9) and combine these appropriately. Among them, it is represented by the formula (L-6.1), the formula (L-6.3), the formula (L-6.4), the formula (L-6.6) and the formula (L-6.9). It preferably contains a compound.

Further, the compound represented by the general formula (L-6) is preferably a compound represented by the formulas (L-6.10) to (L-6.17), for example, and among them, the compound represented by the formula (L-6.17) is preferable. It is preferably a compound represented by L-6.11).

The lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% and 7%. The upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.

The compound represented by the general formula (L-7) is the following compound.

^{(Wherein, R L71} and ^{R L72} each independently represent the same meaning as ^{R L1} and ^{R L2} in Formula ^{(L), A L71} and ^{A L72} is ^{A L2} and in the general formula (L) independently Although it has the same meaning as ^{A L3 , the hydrogen atoms on A L71} and A ^L72 may be independently substituted with fluorine atoms, and Z ^L71 has the same meaning as ^{Z L2} in the general formula (L). X ^L71 and ^{XL 72} independently represent a fluorine atom or a hydrogen atom.)
In the formula, ^RL71 and ^RL72 are preferably alkyl groups having 1 to 5 carbon atoms, alkenyl groups having 2 to 5 carbon atoms, or alkoxy groups having 1 to 4 carbon atoms, respectively, and ^{AL71 and AL72.} Are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group ^{, the hydrogen atoms on AL71} and ^AL72 may be independently substituted with fluorine atoms, and Z L71 is ^simply. Bonds or COO− are preferred, single bonds are preferred, and ^{XL71 and XL72} are preferably hydrogen atoms.

The types of compounds that can be combined are not particularly limited, but they are combined according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, and four types as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-7) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dropping marks, and the like. It is necessary to make appropriate adjustments according to the required performance such as seizure and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 1%, 2%, 3% and 5%. , 7%, 10%, 14%, 16%, 20%. The upper limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 30%, 25%, 23%, and 20%. , 18%, 15%, 10%, 5%.

Preferably, to larger amount of content of the compound represented by the formula (L-7) if the composition of the present invention is desired embodiment of the high T _NI, if the embodiment of the low viscosity is desired containing It is preferable to reduce the amount.

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulas (L-7.1) to (L-7.4), and the compound represented by the formula (L-7. It is preferably a compound represented by 2).

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulas (L-7.11) to (L-7.13), and the compound represented by the formula (L-7. It is preferably a compound represented by 11).

Further, the compound represented by the general formula (L-7) is a compound represented by the formulas (L-7.21) to (L-7.23). It is preferably a compound represented by the formula (L-7.21).

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulas (L-7.31) to (L-7.34), and the compound represented by the formula (L-7. It is preferably a compound represented by 31) or / and the formula (L-7.32).

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulas (L-7.41) to (L-7.44), and the compound represented by the formula (L-7. It is preferably a compound represented by 41) or / and the formula (L-7.42).

Further, the compound represented by the general formula (L-7) is preferably a compound represented by the formulas (L-7.51) to (L-7.53).

The compound represented by the general formula (L-8) is the following compound.

^{(Wherein, R L81} and ^{R L82} each independently represent the same meaning as ^{R L1} and ^{R L2} in Formula ^{(L), A L81} represents the same meaning or a single bond and ^{A L1} in formula (L) but the hydrogen atoms on a ^L81 may be substituted independently by fluorine atom, X ^L81 to X ^L86 each independently represents a fluorine atom or a hydrogen atom.)
In the formula, ^RL81 and ^RL82 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and ^AL81 is 1, A 4-cyclohexylene group or a 1,4-phenylene group is preferable, and ^{the hydrogen atoms on AL71 and AL72} may be independently substituted with fluorine atoms, and are the same in the general formula (L-8). The number of fluorine atoms on the ring structure is preferably 0 or 1, and the number of fluorine atoms in the molecule is preferably 0 or 1.

The types of compounds that can be combined are not particularly limited, but they are combined according to the required performance such as solubility at low temperature, transition temperature, electrical reliability, and birefringence. The types of compounds used are, for example, one type, two types, three types, and four types as one embodiment of the present invention.

In the composition of the present invention, the content of the compound represented by the general formula (L-8) includes solubility at low temperature, transition temperature, electrical reliability, birefringence, process compatibility, dropping marks, and the like. It is necessary to make appropriate adjustments according to the required performance such as seizure and dielectric anisotropy.

The lower limit of the preferable content of the compound represented by the formula (L-8) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, and 5%. , 7%, 10%, 14%, 16%, 20%. The upper limit of the preferable content of the compound represented by the formula (L-8) with respect to the total amount of the composition of the present invention is 30%, 25%, 23%, and 20%. , 18%, 15%, 10%, 5%.

Preferably, to larger amount of content of the compound represented by the formula (L-8) If the composition of the present invention is desired embodiment of the high T _NI, if the embodiment of the low viscosity is desired containing It is preferable to reduce the amount.

Further, the compound represented by the general formula (L-8) is preferably a compound represented by the formulas (L-8.1) to (L-8.4), and the compound represented by the formula (L-8. 3), Equation (L-8.5), Equation (L-8.6), Equation (L-8.13), Equation (L-8.16) to Equation (L-8.18), Equation (L-8.18) More preferably, it is a compound represented by the formulas (L-8.28) from L-8.23).

General formula (i), general formula (L), (N-1), (N-2), (N-3), general formula (J) and general formula (J) with respect to the total amount of the composition of the present invention. The lower limit of the total preferable content of the compounds represented by K) is 80%, 85%, 88%, 90%, 92%, 93%, 94%. , 95%, 96%, 97%, 98%, 99%, 100%. The preferred upper limit of the content is 100%, 99%, 98% and 95%.

In addition, the total amount of the compounds represented by the general formulas (i), (L), (N-1), (N-2) and (N-3) with respect to the total amount of the composition of the present invention. The lower limit of the preferred content is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%. , 97%, 98%, 99%, 100%. The preferred upper limit of the content is 100%, 99%, 98% and 95%.

Further, the lower limit of the preferable content of the total of the compounds represented by the general formulas (i), (L), general formulas (J) and (K) with respect to the total amount of the composition of the present invention is set. 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, It is 98%, 99%, and 100%. The preferred upper limit of the content is 100%, 99%, 98% and 95%.

Further, the lower limit of the total preferable content of the compounds represented by the general formulas (i), (L) and (N-1) with respect to the total amount of the composition of the present invention is 80%. , 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%. , 99% and 100%. The preferred upper limit of the content is 100%, 99%, 98% and 95%.

Further, the lower limit of the total preferable content of the compounds represented by the general formulas (i), (L) and (J) with respect to the total amount of the composition of the present invention is 80%, which is 85. %, 88%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99. % And 100%. The preferred upper limit of the content is 100%, 99%, 98% and 95%.

In addition, the total preferable content of the compounds represented by the general formulas (i), (N-1), (N-2) and (N-3) with respect to the total amount of the composition of the present invention. The lower limit value is preferably 5% or more, preferably 10% or more, preferably 13% or more, preferably 15% or more, and 18% as the lower limit value in the composition. It is preferably contained in an amount of 20% or more, preferably in an amount of 23% or more, preferably in an amount of 25% or more, preferably in an amount of 28% or more, and preferably in an amount of 30% or more. It is preferably contained in an amount of 33% or more, preferably 35% or more, preferably 38% or more, and preferably 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 100% or less, preferably 95% or less, preferably 90% or less, preferably 88% or less, and preferably 85% or less. , 83% or less, preferably 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, and preferably 70% or less. It is preferable to contain 68% or less, preferably 65% or less, preferably 63% or less, preferably 60% or less, and preferably 55% or less. It is preferably contained in an amount of 50% or less, and preferably 40% or less.

Further, the lower limit of the total preferable content of the compounds represented by the general formula (i) and the general formula (N-1) with respect to the total amount of the composition of the present invention is set as the lower limit in the composition. It is preferably contained in an amount of 5% or more, preferably 10% or more, preferably 13% or more, preferably 15% or more, preferably 18% or more, and preferably 20% or more. It is preferable to contain 23% or more, preferably 25% or more, preferably 28% or more, preferably 30% or more, preferably 33% or more, and 35. It is preferably contained in an amount of% or more, preferably contained in an amount of 38% or more, and preferably contained in an amount of 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 100% or less, preferably 95% or less, preferably 90% or less, preferably 88% or less, and preferably 85% or less. , 83% or less, preferably 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, and preferably 70% or less. It is preferable to contain 68% or less, preferably 65% or less, preferably 63% or less, preferably 60% or less, and preferably 55% or less. It is preferably contained in an amount of 50% or less, and preferably 40% or less.

Further, the lower limit of the total preferable content of the compounds represented by the general formulas (i), (J) and (K) with respect to the total amount of the composition of the present invention is the lower limit in the composition. As a result, it is preferably contained in an amount of 5% or more, preferably 10% or more, preferably 13% or more, preferably 15% or more, preferably 18% or more, and preferably 20% or more. It is preferably contained, preferably 23% or more, preferably 25% or more, preferably 28% or more, preferably 30% or more, and preferably 33% or more. , 35% or more, preferably 38% or more, and preferably 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 95% or less, preferably 90% or less, preferably 88% or less, preferably 85% or less, and preferably 83% or less. , 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, preferably 70% or less, and 68% or less. It is preferably contained in an amount of 65% or less, preferably 63% or less, preferably 60% or less, preferably 55% or less, and preferably 50% or less. It is preferably contained in an amount of 40% or less.

Further, the lower limit of the total preferable content of the compounds represented by the general formula (i) and the general formula (N-1) with respect to the total amount of the composition of the present invention is set as the lower limit in the composition. It is preferably contained in an amount of 5% or more, preferably 10% or more, preferably 13% or more, preferably 15% or more, preferably 18% or more, and preferably 20% or more. It is preferable to contain 23% or more, preferably 25% or more, preferably 28% or more, preferably 30% or more, preferably 33% or more, and 35. It is preferably contained in an amount of% or more, preferably contained in an amount of 38% or more, and preferably contained in an amount of 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 95% or less, preferably 90% or less, preferably 88% or less, preferably 85% or less, and preferably 83% or less. , 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, preferably 70% or less, and 68% or less. It is preferably contained in an amount of 65% or less, preferably 63% or less, preferably 60% or less, preferably 55% or less, and preferably 50% or less. It is preferably contained in an amount of 40% or less.

The liquid crystal composition of the present invention preferably contains the compounds represented by the general formulas (i) and (L), and the content of these compounds is 5% or more as the lower limit in the composition. It is preferably contained, preferably 10% or more, preferably 13% or more, preferably 15% or more, preferably 18% or more, and preferably 20% or more. , 23% or more, preferably 25% or more, preferably 28% or more, preferably 30% or more, preferably 33% or more, and 35% or more. It is preferable to contain 38% or more, and it is preferable to contain 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 100% or less, preferably 95% or less, preferably 90% or less, preferably 88% or less, and preferably 85% or less. , 83% or less, preferably 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, and preferably 70% or less. It is preferable to contain 68% or less, preferably 65% or less, preferably 63% or less, preferably 60% or less, and preferably 55% or less. It is preferably contained in an amount of 50% or less, and preferably 40% or less.

The liquid crystal composition of the present invention preferably contains the compounds represented by the general formulas (i) and (L-1), and the content of these compounds is 5 as the lower limit value in the composition. % Or more, preferably 10% or more, preferably 13% or more, preferably 15% or more, preferably 18% or more, and preferably 20% or more. Is preferable, 23% or more is preferably contained, 25% or more is preferably contained, 28% or more is preferably contained, 30% or more is preferably contained, 33% or more is preferably contained, and 35% or more is contained. It is preferably contained in an amount of 38% or more, and preferably 40% or more. Further, as the upper limit value, it is preferably contained in an amount of 100% or less, preferably 95% or less, preferably 90% or less, preferably 88% or less, and preferably 85% or less. , 83% or less, preferably 80% or less, preferably 78% or less, preferably 75% or less, preferably 73% or less, and preferably 70% or less. It is preferable to contain 68% or less, preferably 65% or less, preferably 63% or less, preferably 60% or less, and preferably 55% or less. It is preferably contained in an amount of 50% or less, and preferably 40% or less.

The composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms are bonded to each other, such as a peracid (-CO-OO-) structure, in the molecule.

When the reliability and long-term stability of the composition are emphasized, the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less, based on the total mass of the composition. It is preferably 1% or less, and most preferably not substantially contained.

When the stability by UV irradiation is emphasized, the content of the compound substituted with chlorine atoms is preferably 15% or less, preferably 10% or less, and 8%, based on the total mass of the composition. % Or less, more preferably 5% or less, more preferably 3% or less, and even more preferably substantially no content.

It is preferable to increase the content of the compound having all 6-membered ring structures in the molecule, and the content of the compound having all 6-membered ring structures in the molecule is 80 with respect to the total mass of the composition. % Or more, more preferably 90% or more, further preferably 95% or more, and the composition is composed only of a compound in which substantially all the ring structures in the molecule are 6-membered rings. It is most preferable to do so.

In order to suppress deterioration of the composition due to oxidation, it is preferable to reduce the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group is added to the total mass of the composition. On the other hand, it is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and further preferably substantially not contained.

When the improvement of viscosity and the improvement of _TNI are emphasized, the content of the compound having a 2-methylbenzene-1,4-diyl group in which the hydrogen atom may be substituted with halogen should be reduced. The content of the compound having a 2-methylbenzene-1,4-diyl group in the molecule is preferably 10% or less, preferably 8% or less, based on the total mass of the composition. It is preferably 5% or less, more preferably 3% or less, and even more preferably substantially absent.

In the present application, substantially not contained means that it is not contained except for an unintentionally contained substance.

When the compound contained in the composition of the first embodiment of the present invention has an alkenyl group as a side chain, and the alkenyl group is bonded to cyclohexane, the number of carbon atoms of the alkenyl group is 2 to 5. When the alkenyl group is bonded to benzene, the number of carbon atoms of the alkenyl group is preferably 4 to 5, and the unsaturated bond of the alkenyl group and benzene are directly bonded. It is preferable that there is no such thing.

_{The average elastic constant (KAVG} ) of the liquid crystal composition used in the present invention is preferably 10 to 25, but the lower limit thereof is preferably 10 is preferable, 10.5 is preferable, 11 is preferable, and 11.5 is preferable. , 12 is preferred, 12.3 is preferred, 12.5 is preferred, 12.8 is preferred, 13 is preferred, 13.3 is preferred, 13.5 is preferred, 13.8 is preferred, 14 is preferred, 14 .3 is preferred, 14.5 is preferred, 14.8 is preferred, 15 is preferred, 15.3 is preferred, 15.5 is preferred, 15.8 is preferred, 16 is preferred, 16.3 is preferred, 16 .5 is preferable, 16.8 is preferable, 17, is preferable, 17.3 is preferable, 17.5 is preferable, 17.8 is preferable, 18 is preferable, and 25 is preferable and 24.5 is preferable as the upper limit value thereof. Is preferable, 24 is preferable, 23.5 is preferable, 23 is preferable, 22.8 is preferable, 22.5 is preferable, 22.3 is preferable, 22 is preferable, 21.8 is preferable, and 21.5 is preferable. , 21.3 is preferable, 21 is preferable, 20.8 is preferable, 20.5 is preferable, 20.3 is preferable, 20 is preferable, 19.8 is preferable, 19.5 is preferable, and 19.3 is preferable. , 19 is preferred, 18.8 is preferred, 18.5 is preferred, 18.3 is preferred, 18 is preferred, 17.8 is preferred, 17.5 is preferred, 17.3 is preferred, and 17 is preferred. When emphasizing power reduction, it is effective to suppress the amount of light of the backlight, it is preferred that the liquid crystal display device to improve the light transmittance, it To achieve this the set lower value of K _AVG preferable. When the improvement of the response speed is emphasized, it is preferable to set the value of _{KAVG to a high value.} The liquid crystal composition of the present invention has a refractive index anisotropy (Δn) at 20 ° C. of 0.08 to 0.14, more preferably 0.09 to 0.13, preferably 0.09 to 0.12. Especially preferable. More specifically, it is preferably 0.10 to 0.13 when dealing with a thin cell gap, and preferably 0.08 to 0.10. When dealing with a thick cell gap.

The liquid crystal composition of the present invention has a viscosity (η) at 20 ° C. of 10 to 30 mPa · s, more preferably 10 to 25 mPa · s, and particularly preferably 10 to 22 mPa · s.

The liquid crystal composition of the present invention has a rotational viscosity (γ ₁ ) at 20 ° C. of 60 to 200 mPa · s, more preferably 60 to 120 mPa · s, and particularly preferably 60 to 100 mPa · s. ..

The liquid crystal composition of the present invention has a nematic phase-isotropic liquid phase transition temperature (T _ni ) of 60 ° C. to 120 ° C., more preferably 70 ° C. to 100 ° C., and particularly preferably 70 ° C. to 85 ° C. In addition, it is preferable to show a nematic liquid crystal at 20 ° C.

In addition to the above-mentioned compounds, the liquid crystal composition of the present invention may contain ordinary nematic liquid crystal, smectic liquid crystal, cholesteric liquid crystal, antioxidant, ultraviolet absorber, infrared absorber, polymerizable monomer, light stabilizer and the like. Good.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In addition, "%" in the compositions of the following Examples and Comparative Examples means "mass%". The phase transition temperature was measured using a polarizing microscope equipped with a temperature control stage and a differential scanning calorimeter (DSC).

T _n-i represents the transition temperature of the nematic phase-isotropic phase.

The following abbreviations are used to describe the compounds.
THF: Tetrahydrofuran Me: Methyl group, Et: Ethyl group, Pr: n-propyl group, Bu: n-Butyl group (Example 1) Production of 1- (1-cyclopentenyl) -4-ethoxybenzene

(1-1) Under dry nitrogen, 4-ethoxybromobenzene (30 g) was dissolved in THF (90 mL), added dropwise to magnesium (4.3 g), cyclohexanone (19 g) was added dropwise, and the mixture was heated under reflux for 1 hour. The reaction mixture was cooled to 5 ° C., 10% hydrochloric acid (100 mL) and toluene (100) were added, and the layers were separated. The organic layer was washed with saturated brine (20), anhydrous sodium sulfate was added, and the mixture was dried. Sodium sulfate was removed by filtration. After removing the solvent, toluene (300 mL) and paratoluenesulfonic acid monohydrate (1.4 g) were added, and the mixture was heated under reflux for 5 hours while removing water. The reaction mixture was cooled to 5 ° C., 10% hydrochloric acid (100 mL) and toluene (100 mL) were added, and the layers were separated. The organic layer was washed with saturated brine (20 mL), anhydrous sodium sulfate was added, and the mixture was dried. After removing sodium sulfate by filtration, it was purified by silica gel column chromatography and recrystallized from hexane to obtain 21.3 g of 1-cyclopentenyl-4-ethoxybenzene as a white solid.
Phase transition temperature: Cr 91 Iso
MS m / z: 188 [M ⁺ ]
¹ HNMR (400 MHz, CDCl ₃ , TMS internal standard): δ (ppm) = 7.28 (2H, d, J = 8.2 Hz), 6.76 (2H, d, J = 8.2 Hz), 5. 96 (1H, t, J = 2.7Hz), 3.95 (2H, q, J = 6.1Hz), 2.60 (2H, q, J = 2.4Hz), 2.43 (2H, q) , J = 1.4Hz), 1.93 (2H, quint, J = 7.8Hz), 1.33 (3H, t, J = 6.1Hz)
(Example 2) Production of 4- (1-cyclopentenyl) -4'-propylbiphenyl

4- (1-Cyclopentenyl) -4'-propylbiphenyl was obtained as a white solid by the same method as in Example 1.
Phase transition temperature: Cr 158 Iso
MS m / z: 262 [M ⁺ ]
¹ HNMR (400 MHz, CDCl ₃ , TMS internal standard): δ (ppm) = 7.57-7.48 (6H, m), 7.24 (2H, d, J = 8.6Hz), 6.22 ( 1H, m), 2.77-2.71 (2H, m), 2.62 (2H, t, J = 7.5Hz), 2.58-2.52 (2H, m), 2.07- 2.00 (2H, m), 1.72-1.63 (2H, sext, J = 7.6Hz), 0.97 (3H, t, J = 7.2Hz)
(Example 3) Production of 1- (1-cyclopentenyl) -4- (4- (trans-4-propylcyclohexyl)) benzene

In the same manner as in Example 1, 1- (1-cyclopentenyl) -4- (4- (trans-4-propylcyclohexyl)) benzene was obtained as a white solid.
MS m / z: 268 [M ⁺ ]
¹ HNMR (400 MHz, CDCl ₃ , TMS internal standard): δ (ppm) = 7.36 (2H, d, J = 8.2 Hz), 7.15 (2H, d, J = 8.2 Hz), 6. 13-6.11 (1H, m), 2.76-2.62 (2H, m), 2.55-2.38 (3H, m), 2.03-1.96 (2H, m), 1.91-1.78 (4H, m), 1.50-0.99 (7H, m), 0.90 (3H, t, J = 7.3Hz)
(Example 4) Production of 1-cyclopentyl-4- (4- (trans-4-propylcyclohexyl)) benzene

A solution of 1- (1-cyclopentenyl) -4- (4- (trans-4-propylcyclohexyl)) benzene (25 g) obtained in Example 3 in a pressure-resistant container in THF (125 mL) and palladium carbon (1.3 g). ) Was added, and the mixture was stirred for 6 hours under a hydrogen atmosphere. The reaction solution is filtered, purified by silica gel column chromatography, and recrystallized from hexane to obtain 18.4 g of 1-cyclopentyl-4- (4- (trans-4-propylcyclohexyl)) benzene as a white solid. It was.
MS m / z: 352 [M ⁺ ]
¹ HNMR (400 MHz, CDCl ₃ , TMS internal standard): δ (ppm) = 7.14 (4H, q, J = 8.0 Hz), 2.95 (1H, quint, J = 7.8 Hz), 2. 42 (1H, tt, J ₁ = 2.9Hz, J ₂ = 12.1Hz), 2.08-2.00 (2H, m), 1.92-1.52 (10H, m), 1. 48-1.17 (7H, m), 1.09-0.95 (2H, m), 0.90 (3H, t, J = 7.2Hz)
(Example 5) Preparation of liquid crystal composition-1
Host liquid crystal (H) having the following composition

Was prepared. _Tn-i (nematic phase-isotropic liquid phase transition temperature), Δε (dielectric constant anisotropy at 25 ° C), Δ n (refractive index anisotropy at 25 ° C) and γ _{1 of} this host liquid crystal (H). The values of (rotational viscosity coefficient at 25 ° C.) (all measured values) were as follows.

T _n-i : 73.8 ° C.
Δε: -2.79
Δn: 0.101
γ ₁ : 112
A liquid crystal composition (MA) composed of 85% of the parent liquid crystal (H) and 15% of 1- (1-cyclopentenyl) -4-ethoxybenzene obtained in Example 1 was prepared. _{From this composition (MA), extrapolation T n-i} , extrapolation Δε, extrapolation Δn, extrapolation γ _{1 of} 1- (1-cyclopentenyl) -4-ethoxybenzene obtained in Example 1 The values of are as follows.

Extrapolation T _n-i : -87.1 ° C.
Extrapolation Δε: 0.11
Extrapolation Δn: 0.130
Extrapolation γ ₁ : 18 mPa · s
In addition, the prepared liquid crystal composition (MA) maintained a uniform nematic liquid crystal state at room temperature for one month or longer.

Further, the liquid crystal display device produced by using the liquid crystal composition (MA) showed excellent display characteristics, maintained stable display characteristics for a long period of time, and showed high reliability.

(Example 6) Preparation of liquid crystal composition-2
A liquid crystal composition (MB) composed of 90% of the mother liquid crystal (H) and 10% of 4- (1-cyclopentenyl) -4'-propylbiphenyl obtained in Example 2 was prepared. _{Extrapolation T n-i} , extrapolation Δε, extrapolation Δn, extrapolation γ of 4- (1-cyclopentenyl) -4'-propylbiphenyl obtained in Example 2 from this composition (MB). _{The value of 1} is as follows.

Extrapolation T _n-i : 97.8 ° C.
Extrapolation Δε: 0.41
Extrapolation Δn: 0.275
Extrapolation γ ₁ : 192 mPa · s
In addition, the prepared liquid crystal composition (MB) maintained a uniform nematic liquid crystal state at room temperature for one month or longer.

Further, the liquid crystal display device produced by using the liquid crystal composition (MB) showed excellent display characteristics, maintained stable display characteristics for a long period of time, and showed high reliability.

(Example 7) Preparation of liquid crystal composition-3
A liquid crystal composition (M-) consisting of 85% of the mother liquid crystal (H) and 15% of 1- (1-cyclopentenyl) -4- (4- (trans-4-propylcyclohexyl)) benzene obtained in Example 3. C) was prepared. _{From this composition (MC), extrapolation T n-i of} 1- (1-cyclopentenyl) -4- (4- (trans-4-propylcyclohexyl)) benzene obtained in Example 3 The values of extrapolation Δε, extrapolation Δn, and extrapolation γ ₁ are as follows.

Extrapolation T _n-i : 70.9 ° C
Extrapolation Δε: 0.54
Extrapolation Δn: 0.148
Extrapolation γ ₁ : 166 mPa · s
In addition, the prepared liquid crystal composition (MC) maintained a uniform nematic liquid crystal state at room temperature for one month or longer.

Further, the liquid crystal display device produced by using the liquid crystal composition (MC) showed excellent display characteristics, maintained stable display characteristics for a long period of time, and showed high reliability.

(Example 8) Preparation of liquid crystal composition-4
A liquid crystal composition (MD) composed of 85% of the mother liquid crystal (H) and 15% of 1-cyclopentyl-4- (4- (trans-4-propylcyclohexyl)) benzene obtained in Example 4 was prepared. .. _{Extrapolation T n-i} , extrapolation Δε, extrapolation of 1-cyclopentyl-4- (4- (trans-4-propylcyclohexyl)) benzene obtained in Example 4 from this composition (MD). The values of Δn and extrapolation γ ₁ are as follows.

Extrapolation T _n-i : -30.0 ° C
Extrapolation Δε: 1.56
Extrapolation Δn: 0.054
Extrapolation γ ₁ : 38 mPa · s
In addition, the prepared liquid crystal composition (MD) maintained a uniform nematic liquid crystal state at room temperature for one month or longer.

Further, the liquid crystal display device produced by using the liquid crystal composition (MD) showed excellent display characteristics, maintained stable display characteristics for a long period of time, and showed high reliability.

(Comparative Example 1) Preparation of liquid crystal composition-5
A liquid crystal composition (ME) composed of 85% of the mother liquid crystal (H) and 15% of 4- (4- (trans-4-propylcyclohexyl)) -4'-ethylbiphenyl was prepared. _{From this composition (ME), extrapolation T n-i} , extrapolation Δε, extrapolation Δn, extrapolation γ _{1 of} 4- (4- (trans-4-propylcyclohexyl)) -4'-ethylbiphenyl The values of are as follows.

Extrapolation T _n-i : 154.9 ° C
Extrapolation Δε: 1.00
Extrapolation Δn: 0.184
Extrapolation γ ₁ : 183 mPa · s
In addition, the prepared liquid crystal composition (ME) maintained a uniform nematic liquid crystal state at room temperature for one month or longer.

Comparing Example 6 with the extrapolation Δn of Comparative Example 1, it can be seen that the compound of the present application exhibits a sufficiently large extrapolation Δn as compared with the compound of Comparative Example 1. From this, it was clarified that the compound of the present application has a characteristic of exhibiting a large Δn.
(Examples 9 to 12 and Comparative Examples 2 and 3)
Hereinafter, the following abbreviations will be used for the description of the compound.
(Side chain)
−N −C _n H _{2n + 1} Linear alkyl group with n −C _n H _{2n + 1} − Linear alkyl group with _n −On −OC n H _2n +1 Linearly linear alkyl group with n carbon atoms Alkyl group −nO−−C _n H _2n O−
-On- -OC _n H _2n -
−V −CH = CH ₂
V-CH ₂ = CH-
−V1 −CH = CH-CH ₃
−F −F
(Ring structure)

The characteristics measured in Examples 9 to 12 and Comparative Examples 2 and 3 are as follows.

T _NI : Nematic phase-isotropic liquid phase transition temperature (° C)
Δn: Refractive index anisotropy at _{20 ° C. γ 1} : Rotational viscosity at 20 ° C. (mPa · s)
Δε: Dielectric constant anisotropy at 20 ° C <Preparation and evaluation of liquid crystal composition>
The liquid crystal compositions of Comparative Example 2, Comparative Example 3, Example 9, Example 10, Example 11 and Example 12 shown in the table below were prepared, their physical characteristics were measured, and the low temperature storage stability was confirmed. .. Table 1 shows the composition of the liquid crystal composition and the results of its physical property values.

Example 9 and Example 10 are examples in which 3-Cy-Ph-Ph-2 is replaced with Cp-Ph-Ph-3 or Cp1-Ph-Cy-3, respectively, in Comparative Example 2. Examples 11 and 12 are examples in which 3-Cy-Ph-Ph-2 is replaced with Cp-Ph-Ph-3 or Cp1-Ph-Cy-3, respectively, in Comparative Example 3. Examples 13 and 14 are examples in which 3-Cy-Ph-Ph-2 is replaced with Cp-Ph-Ph-3 or Cp1-Ph-Cy-3, respectively, in Comparative Example 4. It was clarified that in Example 9, Example 11 and Example 13, Δn showed a larger value than Comparative Example 2, Comparative Example 3 and Comparative Example 4. Therefore, by using the compound represented by the general formula (i), it is possible to make adjustments such as increasing the amount of the non-polar compound used, and thus it is possible to further reduce the value of γ1.
_{It was clarified that in Example 10, Example 12, and Example 14, although the values of TNI} and Δn were slightly reduced as compared with Comparative Example 2 and Comparative Example 3, the values of γ1 were reduced. Also in Examples 10, 12 and 14, adjustments such as increasing the amount of the non-polar compound used can be made by using the compound represented by the general formula (i), so that _{the values of TNI} and Δn are further improved. It is possible to make it.

Claims (7)

General formula (i)

(In the formula, ^Ri1 represents an alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, a fluorine atom or -CN, and the alkyl group and one existing in the alkenyl group. -CH ₂ - or nonadjacent two or more -CH ₂ - is -C≡C -, - may be replaced by O- or -S-, hydrogen present in the alkyl group and the alkenyl group Atoms may be replaced with fluorine atoms
A ⁱ¹ represents a 1-cyclopentenyl group and represents
A ⁱ² is

Represents a group selected from
A ⁱ³ are independent of each other
(A) 1,4-cyclohexylene group (the one present in the group -CH ₂ - or nonadjacent two or more -CH ₂ - is replaced by -O- or -S- Is also good.)
(B) 1,4-Phenylene group (one -CH = existing in this group or two or more -CH = not adjacent to each other may be replaced with -N = and is present in this group. One hydrogen atom may be replaced with a fluorine atom.)
(C) 1,4-Cyclohexenylene group, naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group (c) One -CH = or two or more non-adjacent -CH = present in the naphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group is- It may be replaced with N =, and the hydrogen atom existing in these groups may be replaced with a fluorine atom.)
Represents a group selected from the group consisting of
Z ⁱ¹ represents a single bond
Z ⁱ² are independently -CH ₂ O-, -OCH _2- , -CF ₂ O-, -OCF _2- , -COO-, -OCO-, -CH ₂ CH _2- , -CF ₂ CF ₂ Represents −, −CH = CH−, −CF = CF−, −C≡C− or single bond.
n ⁱ represents 1 or 2, if a n ⁱ is 2 A ⁱ² and Z ⁱ² there are multiple, they are each independently, it may be the same or different. )
The compound represented by. The compound according to claim 1, wherein in the general formula (i), ^Ri1 represents an alkyl group having 1 to 15 carbon atoms, an alkenyl group having 2 to 15 carbon atoms, or an alkoxy group having 2 to 15 carbon atoms. In the general formula (i), A ⁱ³

The compound according to claim 1 or 2, which represents a group selected from. The compound according to any one of claims 1 to 3 ^{, wherein Z i2} represents -CH ₂ O-, -OCH _2- , -CH ₂ CH _2- , or a single bond in the general formula (i). The compound according to any one of claims 1 to 4, wherein in the general formula (i), Z ^{i2 represents a single bond.} A composition containing one or more of the compounds according to any one of claims 1 to 5. A liquid crystal display device using the composition according to claim 6.