CN113122275A - Liquid crystal composition, liquid crystal display element and liquid crystal display - Google Patents
Liquid crystal composition, liquid crystal display element and liquid crystal display Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 146
- 239000000203 mixture Substances 0.000 title claims abstract description 109
- 150000001875 compounds Chemical class 0.000 claims abstract description 53
- 125000004432 carbon atom Chemical group C* 0.000 claims description 100
- 125000000217 alkyl group Chemical group 0.000 claims description 20
- 125000003545 alkoxy group Chemical group 0.000 claims description 16
- 125000003342 alkenyl group Chemical group 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 10
- 125000003302 alkenyloxy group Chemical group 0.000 claims description 7
- 125000004955 1,4-cyclohexylene group Chemical group [H]C1([H])C([H])([H])C([H])([*:1])C([H])([H])C([H])([H])C1([H])[*:2] 0.000 claims description 6
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 6
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 6
- 125000004979 cyclopentylene group Chemical group 0.000 claims description 6
- 125000004980 cyclopropylene group Chemical group 0.000 claims description 5
- -1 fluorine-substituted carbon Chemical class 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims 1
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 8
- 230000000875 corresponding effect Effects 0.000 description 24
- 238000009472 formulation Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000002019 doping agent Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- Liquid Crystal Substances (AREA)
Abstract
The disclosure relates to a liquid crystal composition, a liquid crystal display element comprising the liquid crystal composition and a liquid crystal display, and belongs to the field of liquid crystal display. The disclosed liquid crystal composition comprises a compound represented by formula I and a compound represented by formula II, and has large optical anisotropy and high clearing point.
Description
Technical Field
The present disclosure relates to a liquid crystal composition, and more particularly, to a liquid crystal composition, a liquid crystal display element including the liquid crystal composition, and a liquid crystal display.
Background
Liquid crystal display elements are classified into the following modes according to display modes: twisted Nematic (TN) mode, Super Twisted Nematic (STN) mode, in-plane mode (IPS), Fringe Field Switching (FFS), Vertical Alignment (VA) mode. The following properties are required for the liquid crystal composition regardless of the display mode:
(1) the chemical and physical properties are stable; (2) the viscosity is low; (3) having a suitable dielectric Δ ε; (4) suitable refractive indices Δ n; (5) the mutual solubility with other liquid crystal compounds is good.
Early commercial TFT-LCD products basically adopted the TN display mode, and the biggest problem thereof was the narrow viewing angle. With the increase in the size of products, particularly in the application to the TV field, IPS display modes and VA display modes having a wide viewing angle characteristic are developed and applied in sequence. In addition, liquid crystal media used for display elements such as FFS mode, IPS mode, and VA mode are not perfect, and liquid crystal materials used for display devices are required to have (i) low driving voltage: the liquid crystal material has proper negative dielectric anisotropy and elastic coefficient K; quick response: the liquid crystal material has proper rotational viscosity gamma1And a coefficient of elasticity K; high reliability: high charge retention rate, high specific resistance value, excellent high temperature stability, and strict requirements on ultraviolet light (UV light) or conventional backlight illumination stability. With the wide application of liquid crystal displays, the requirements for their performance are also increasing. The high contrast ratio can obviously improve the performance of various aspects of the image definition, the image detail, the gray level and the like of the display. Although the retardation (Δ nd) of different display modes is designed differently, the retardation of the same display mode is designed to be substantially the same in order to obtain as large a transmittance as possible. And through the design of fixed retardation, better performances such as contrast, viewing angle and the like are obtained. The response speed of the liquid crystal display device is influenced by the thickness (d) of the liquid crystal box, and the increase of the thickness of the liquid crystal box weakens the overall control capability of an electric field on the torsion of liquid crystal molecules, so that the response speed of the liquid crystal display device can be improved by reducing the thickness of the liquid crystal box on the premise of not changing the retardation. It is a hot direction of continuous effort to study different combinations of liquid crystal compounds to balance various properties.
The liquid crystal material not only needs to have the characteristics, but also has a wide nematic phase temperature range so as to meet the wide application field of the liquid crystal panel, for example, a vehicle-mounted liquid crystal display needs to meet a wider working temperature so as to adapt to the temperature change of each region and climate; liquid crystal displays of industrial control products also need to meet wider operating temperatures to accommodate temperature changes in different operating environments. In practical application, the response speed of the liquid crystal material needs to be improved.
Disclosure of Invention
In order to solve the problems of the prior art, the inventors of the present invention have conducted extensive studies and surprisingly found that the optical anisotropy and clearing point of a liquid crystal composition can be increased by the technical means of the present disclosure.
Another object of the present disclosure is to provide a liquid crystal display element comprising the liquid crystal composition of the present disclosure, which has a fast response speed.
It is still another object of the present disclosure to provide a liquid crystal display comprising the liquid crystal composition of the present disclosure, which has a fast response speed.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
the present disclosure provides liquid crystal compositions comprising a compound of formula I, and one or more compounds of formula II,
the technical scheme of the disclosure has proper dielectric anisotropy and rotational viscosity, and can increase the optical anisotropy and clearing point of the liquid crystal composition.
The present disclosure also provides a liquid crystal display element comprising the liquid crystal composition of the present disclosure, the liquid crystal display element being an active matrix addressing display element or a passive matrix addressing display element.
The present disclosure also provides a liquid crystal display comprising the liquid crystal composition of the present disclosure, the liquid crystal display being an active matrix addressed display or a passive matrix addressed display.
Detailed Description
[ liquid Crystal composition ]
The liquid crystal composition disclosed by the invention comprises a compound shown as a formula I and a compound shown as a formula II,
the technical scheme of the disclosure has proper dielectric anisotropy and rotational viscosity, and can increase the optical anisotropy and clearing point of the liquid crystal composition.
In the liquid crystal composition of the present disclosure, preferably, one or more compounds represented by formula iii are further included:
in the formula III, R3、R4Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms;
R3、R4any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z1、Z2each independently represents a single bond, -CH2CH2-、-OCH2-or-CH2O-；
m represents 0 or 1; n represents 0, 1 or 2.
The aforementioned compound represented by the formula iii has negative dielectric anisotropy, and the driving voltage of the liquid crystal composition can be adjusted by containing the compound represented by the formula iii in the liquid crystal composition of the present disclosure.
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the aforementioned formula iii is selected from the group consisting of compounds represented by the following formulae iii-1 to iii-11:
wherein:
R31、R41each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms;
R31、R41any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula iv in addition to the compound represented by formula ii:
wherein,
R5、R6represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms;
By containing the compound shown in the formula IV in the liquid crystal composition, the intersolubility of the liquid crystal composition can be improved, the rotational viscosity can be reduced, and the response speed of the liquid crystal composition can be improved.
In the liquid crystal composition of the present disclosure, preferably, the aforementioned compound represented by the formula IV other than the compound represented by the formula II is selected from the group consisting of the following compounds represented by the formulae IV-1 to IV-3:
wherein,
R5、R6represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms.
The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula v in addition to the compound represented by formula I:
wherein,
R7、R8each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms;
By containing the compound represented by the formula v in the liquid crystal composition of the present disclosure, the optical anisotropy of the liquid crystal composition can be increased and the clearing point of the liquid crystal composition can be improved.
In the liquid crystal composition of the present disclosure, preferably, the aforementioned compound represented by the formula V other than the compound represented by the formula I is selected from the group consisting of the following compounds represented by the formulae V-1 to V-3:
wherein,
R7、R8each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms.
The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula vi:
wherein,
R9represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, any one or more of these groups being non-linked-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
R10represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms;
x represents O or S.
By containing the compound shown in the formula VI in the liquid crystal composition, the liquid crystal composition has large negative dielectric anisotropy, and is favorable for reducing the driving voltage of a device.
In the liquid crystal composition of the present disclosure, the compound represented by the formula vi is preferably selected from the group consisting of compounds represented by the following formulae vi-1 to vi-12:
wherein R is91、R101Represents an alkyl group having 1 to 10 carbon atoms.
In the liquid crystal composition disclosed by the disclosure, the addition amount (mass ratio) of the compound shown in the formula I in the liquid crystal composition is 1-15%, and preferably 3-11%; the addition amount (mass ratio) of the compound shown in the formula II in the liquid crystal composition is 1-35%, preferably 3-25%; the addition amount (mass ratio) of the compound shown in the formula III in the liquid crystal composition is 1-56%, preferably 25-40%; the adding amount (mass ratio) of the compound shown in the formula IV in the liquid crystal composition is 0-45%, and preferably 20-40%; the addition amount (mass ratio) of the compound shown in the formula V in the liquid crystal composition is 0-25%, preferably 5-20%; the compound represented by the formula VI is added to the liquid crystal composition in an amount (mass ratio) of 0 to 20%, preferably 3 to 15%.
In the liquid crystal composition of the present disclosure, a dopant having various functions may be optionally added, and when the liquid crystal composition contains a dopant, the content of the dopant is preferably 0.01 to 1.5% by mass in the liquid crystal composition, and examples of the dopant include an antioxidant, an ultraviolet absorber, and a chiral agent.
The antioxidant may be exemplified by the group consisting of,
t represents an integer of 1 to 10;
the chiral agent may be, for example,
R0represents an alkyl group having 1 to 10 carbon atoms;
examples of the light stabilizer include,
Z0represents an alkylene group having 1 to 20 carbon atoms, wherein any one or more hydrogen atoms in the alkylene group are optionally substituted by halogen, and any one or more-CH groups2-optionally substituted by-O-;
examples of the ultraviolet absorber include,
R01represents an alkyl group having 1 to 10 carbon atoms.
[ liquid Crystal display element or liquid Crystal display ]
The present disclosure also relates to a liquid crystal display element or a liquid crystal display comprising any of the above liquid crystal compositions; the display element or display is an active matrix display element or display or a passive matrix display element or display.
Optionally, the liquid crystal display element or the liquid crystal display is preferably an active matrix liquid crystal display element or a liquid crystal display.
Optionally, the active matrix display element or display is an IPS-TFT, FFS-TFT, VA-TFT liquid crystal display element or display.
The liquid crystal display element or the liquid crystal display comprising the compound or the liquid crystal composition has a wider nematic phase temperature range and a faster response speed.
Examples
In order to more clearly illustrate the disclosure, the disclosure is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the present disclosure.
In this specification, unless otherwise specified, the percentages refer to mass percentages, temperatures are in degrees centigrade (° c), and the specific meanings and test conditions of other symbols are as follows:
cp represents a liquid crystal clearing point (DEG C), and is measured by a DSC quantitative method;
Δ n represents optical anisotropy, noRefractive index of ordinary light, neThe refractive index of the extraordinary ray is measured under the conditions of 25 +/-2 ℃ and 589nm, and the Abbe refractometer is used for testing;
Δ ε represents dielectric anisotropy, and Δ ε∥-ε⊥Wherein, epsilon∥Is a dielectric constant parallel to the molecular axis,. epsilon⊥Dielectric constant perpendicular to the molecular axis, at 25 + -0.5 deg.C, 20 μm parallel box, INSTEC: ALCT-IR1 test;
γ1expressed as rotational viscosity (mPas) at 25 + -0.5 deg.C, 20 micron parallel boxes, INSTEC: ALCT-IR1 test;
K11is a torsional elastic constant, K33For the splay spring constant, the test conditions were: at 25 ℃, INSTEC, ALCT-IR1 and 18 micron vertical box;
the preparation method of the liquid crystal composition comprises the following steps: weighing each liquid crystal monomer according to a certain proportion, putting the liquid crystal monomers into a stainless steel beaker, putting the stainless steel beaker filled with each liquid crystal monomer on a magnetic stirring instrument for heating and melting, adding a magnetic rotor into the stainless steel beaker after most of the liquid crystal monomers in the stainless steel beaker are melted, uniformly stirring the mixture, and cooling to room temperature to obtain the liquid crystal composition.
The liquid crystal monomer structure of the embodiment of the disclosure is represented by codes, and the code representation methods of the liquid crystal ring structure, the end group and the connecting group are shown in the following tables 1 and 2.
Corresponding code of the ring structure of Table 1
TABLE 2 corresponding codes for end groups and linking groups
Examples are:
Example 1
The formulation and corresponding properties of the liquid crystal compositions are shown in table 3 below.
TABLE 3 formulation and corresponding Properties of the liquid crystal composition of example 1
Example 2
The formulation and corresponding properties of the liquid crystal compositions are shown in table 4 below.
TABLE 4 formulation and corresponding Properties of the liquid crystal composition of example 2
Example 3
The formulation and corresponding properties of the liquid crystal compositions are shown in table 5 below.
TABLE 5 formulation and corresponding Properties of the liquid crystal composition of example 3
Example 4
The formulation and corresponding properties of the liquid crystal compositions are shown in table 6 below.
TABLE 6 formulation and corresponding Properties of the liquid crystal composition of example 4
Example 5
The formulation and corresponding properties of the liquid crystal compositions are shown in table 7 below.
TABLE 7 formulation and corresponding Properties of the liquid crystal composition of example 5
Comparative example 1
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 8 below.
TABLE 8 formulation and corresponding Properties of comparative example 1 liquid Crystal composition
The CPP-3-1 in example 5 was replaced with CPP-3-2, and the rest was the same as example 5 as comparative example 1. The liquid crystal composition of example 5 of the present invention had a suitable dielectric anisotropy (. DELTA.. di-elect cons.), a larger optical anisotropy (. DELTA.n), a higher clearing point,. gamma.1/K33The liquid crystal display has small size and quick response, and can be used for developing a liquid crystal display with low cell thickness, quick response and wide temperature display.
Comparative example 2
The formulation and corresponding properties of the liquid crystal compositions are shown in table 9 below.
TABLE 9 formulation and corresponding Properties of the comparative example 2 liquid Crystal composition
CP-5-O2 in example 5 was replaced with CP-3-O1, and the rest was the same as in example 5, as comparative example 2. Comparison with comparative example 2The liquid crystal composition of example 5 had suitable dielectric anisotropy (. DELTA.. di-elect cons.), rotational viscosity, larger optical anisotropy (. DELTA.n), higher clearing point (Cp), larger K-value, and T-valueoffThe liquid crystal display is small, and can be used for developing a liquid crystal display with low box thickness, quick response and wide temperature display.
Example 6
The formulation and corresponding properties of the liquid crystal composition are shown in table 10 below.
TABLE 10 formulation and corresponding Properties of the liquid crystal composition of example 6
Example 7
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 11 below.
TABLE 11 formulation and corresponding Properties of the liquid crystal composition of example 7
Example 8
The formulation and corresponding properties of the liquid crystal compositions are shown in table 12 below.
TABLE 12 formulation and corresponding Properties of the liquid crystal composition of example 8
Example 9
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 13 below.
TABLE 13 formulation and corresponding Properties of the liquid crystal composition of example 9
It should be understood that the above-mentioned examples are for illustrative purposes only and are not intended to limit the embodiments of the present disclosure, and that various other modifications and changes in light thereof will be suggested to persons skilled in the art and are not intended to be exhaustive or to limit the present disclosure to the precise embodiments disclosed herein.
Claims (10)
1. A liquid crystal composition is characterized in that the liquid crystal composition comprises a compound shown as a formula I and a compound shown as a formula II,
2. the liquid crystal composition of claim 1, further comprising one or more compounds of formula III,
in the formula III, R3、R4Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, or a fluorine-substituted carbon atomAlkenyloxy groups having a numerary of 3 to 8;
R3、R4any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z1、Z2each independently represents a single bond, -CH2CH2-、-OCH2-or-CH2O-；
m represents 0 or 1; n represents 0, 1 or 2.
3. The liquid crystal composition of claim 2, wherein the compound of formula iii is selected from the group consisting of compounds of formulae iii-1 to iii-11:
wherein:
R31、R41each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a fluorine-substituted alkenyl group having 2 to 10 carbon atoms, an alkenyloxy group having 3 to 8 carbon atoms, or a fluorine-substituted alkenyloxy group having 3 to 8 carbon atoms;
R31、R41any one or more of the radicals indicated being unconnected-CH2Optionally cyclopentylene, cyclobutyl or cyclopropyleneAnd (4) substitution.
4. The liquid crystal composition according to any one of claims 1 to 3, further comprising one or more compounds represented by formula IV in addition to the compound represented by formula II:
in the formula IV, R5、R6Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms;
5. The liquid crystal composition of claim 4, wherein the compound of formula iv other than the compound of formula ii is selected from the group consisting of compounds of formulae iv-1 to iv-3:
wherein,
in the formulae IV-1 to IV-3, R5、R6Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms.
6. The liquid crystal composition according to any one of claims 1 to 5, further comprising one or more compounds of formula V other than the compound of formula I:
in formula V, R7、R8Each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms;
7. The liquid crystal composition of claim 6, wherein the compound of formula v other than the compound of formula I is selected from the group consisting of compounds of formulae v-1 to v-3:
wherein,
R7、R8each independently represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a fluorine-substituted alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms.
8. The liquid crystal composition of any one of claims 1 to 7, further comprising one or more compounds of formula VI:
in formula VI, R9Represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms; r9Any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
R10represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms;
x represents O or S.
9. The liquid crystal composition of claim 8, wherein the compound of formula vi is selected from the group consisting of compounds of formulae vi-1 to vi-12:
wherein R is91、R101Each independently represents an alkyl group having 1 to 10 carbon atoms.
10. A liquid crystal display element or a liquid crystal display comprising the liquid crystal composition according to any one of claims 1 to 9, wherein the liquid crystal display element or the liquid crystal display is an active matrix addressing display element or a display, or a passive matrix addressing display element or a display.
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| CN109880640A (en) * | 2019-03-29 | 2019-06-14 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition, liquid crystal display element, liquid crystal display |
| CN109913238A (en) * | 2017-12-12 | 2019-06-21 | 北京八亿时空液晶科技股份有限公司 | A kind of positive and negative mixed liquid crystal composition containing dibenzofurans compound and its application |
| CN109957405A (en) * | 2017-12-26 | 2019-07-02 | 北京八亿时空液晶科技股份有限公司 | A kind of negative dielectric nematic phase liquid crystal composition and its application |
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| CN109913238A (en) * | 2017-12-12 | 2019-06-21 | 北京八亿时空液晶科技股份有限公司 | A kind of positive and negative mixed liquid crystal composition containing dibenzofurans compound and its application |
| CN109957405A (en) * | 2017-12-26 | 2019-07-02 | 北京八亿时空液晶科技股份有限公司 | A kind of negative dielectric nematic phase liquid crystal composition and its application |
| CN109880640A (en) * | 2019-03-29 | 2019-06-14 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition, liquid crystal display element, liquid crystal display |
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