WO2013114780A1 - 液晶化合物、液晶組成物および液晶表示素子 - Google Patents
液晶化合物、液晶組成物および液晶表示素子 Download PDFInfo
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- WO2013114780A1 WO2013114780A1 PCT/JP2012/084032 JP2012084032W WO2013114780A1 WO 2013114780 A1 WO2013114780 A1 WO 2013114780A1 JP 2012084032 W JP2012084032 W JP 2012084032W WO 2013114780 A1 WO2013114780 A1 WO 2013114780A1
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- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13706—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having positive dielectric anisotropy
Definitions
- the present invention mainly relates to a liquid crystal composition suitable for an AM (active matrix) device and the like, and an AM device containing the composition.
- a liquid crystal composition having a positive dielectric anisotropy, a TN (twisted nematic) mode, an OCB (optically compensated bend) mode, an IPS (in-plane switching) mode, an FFS (Fringe field switching) containing the composition. ), Or an element in a PSA (polymer-sustained-alignment) mode.
- the classification based on the operation mode of the liquid crystal includes PC (phase change), TN (twisted nematic), STN (super twisted nematic), ECB (electrically controlled birefringence), OCB (optically compensated bend), IPS ( in-plane switching), VA (vertical alignment), FFS (Fringe field switching), PSA (polymer sustaining alignment) mode, and the like.
- the classification based on the element drive system is PM (passive matrix) and AM (active matrix). PM is classified into static and multiplex, and AM is classified into TFT (thin film insulator), MIM (metal insulator metal), and the like. TFTs are classified into amorphous silicon and polycrystalline silicon. The latter is classified into a high temperature type and a low temperature type according to the manufacturing process.
- the classification based on the light source includes a reflection type using natural light, a transmission type using backlight, and a semi-transmission type using both natural light and backlight.
- the elements contain a liquid crystal composition having appropriate characteristics.
- This liquid crystal composition has a nematic phase.
- the general characteristics of the composition are improved.
- the relationships in the two general characteristics are summarized in Table 1 below.
- the general characteristics of the composition will be further described based on a commercially available AM device.
- the temperature range of the nematic phase is related to the temperature range in which the device can be used.
- a preferred upper limit temperature of the nematic phase is about 70 ° C. or more, and a preferred lower limit temperature of the nematic phase is about ⁇ 10 ° C. or less.
- the viscosity of the composition is related to the response time of the device. A short response time is preferred for displaying moving images on the device.
- the elastic constant of the composition is related to the contrast of the device. In order to increase the contrast in the device, a large elastic constant in the composition is more preferable.
- the optical anisotropy of the composition is related to the contrast ratio of the device.
- the product ( ⁇ n ⁇ d) of the optical anisotropy ( ⁇ n) of the composition and the cell gap (d) of the device is designed to maximize the contrast ratio.
- the appropriate product value depends on the type of operation mode. For a device with a mode such as TN, a suitable value is about 0.45 ⁇ m.
- a composition having a large optical anisotropy is preferable for a device having a small cell gap.
- a large dielectric anisotropy in the composition contributes to a low threshold voltage, a small power consumption and a large contrast ratio in the device. Therefore, a large dielectric anisotropy is preferable.
- a large specific resistance in the composition contributes to a large voltage holding ratio and a large contrast ratio in the device. Therefore, a composition having a large specific resistance not only at room temperature but also at a temperature close to the upper limit temperature of the nematic phase in the initial stage is preferable. A composition having a large specific resistance not only at room temperature but also at a temperature close to the upper limit temperature of the nematic phase after being used for a long time is preferable.
- the stability of the composition against ultraviolet rays and heat is related to the lifetime of the liquid crystal display device. When their stability is high, the lifetime of the device is long. Such characteristics are preferable for an AM device used in a liquid crystal projector, a liquid crystal television, and the like.
- a composition having a positive dielectric anisotropy is used for an AM device having a TN mode.
- a composition having negative dielectric anisotropy is used for an AM device having a VA mode.
- a composition having a positive or negative dielectric anisotropy is used in an AM device having an IPS mode or an FFS mode.
- a composition having a positive or negative dielectric anisotropy is used in an AM device having a PSA mode.
- Examples of liquid crystal compositions having positive dielectric anisotropy are disclosed in the following patent documents.
- Desirable AM elements have such characteristics as a wide usable temperature range, a short response time, a large contrast ratio, a low threshold voltage, a large voltage holding ratio, and a long life. A shorter response time is desirable even at 1 millisecond. Therefore, the desirable properties of the composition are: a high maximum temperature of the nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, High stability against heat, large elastic constant, etc.
- One object of the present invention is to provide a high maximum temperature of the nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability against ultraviolet rays, a high heat It is a liquid crystal composition satisfying at least one characteristic in the characteristics such as high stability with respect to and a large elastic constant. Another object is a liquid crystal composition having an appropriate balance regarding at least two properties. Another object is a liquid crystal display device containing such a composition.
- Another purpose is a composition having appropriate optical anisotropy, large dielectric anisotropy, high stability to ultraviolet light, large elastic constant, etc., and short response time, large voltage holding ratio, large contrast ratio, It is an AM device having characteristics such as a long lifetime.
- R 1 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons
- R 2 and R 3 are independently 1 to 12 carbons.
- ring A and ring B are independently 1 , 4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, or 2,5-difluoro-1,4-phenylene;
- Z 1 independently is a single bond, ethylene or carbonyloxy,;
- X 1, X 2, X 3, and X 4 are each independently hydrogen or fluorine;
- m and n are independently , 2, or 3.
- Advantages of the present invention include a high maximum temperature of the nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability against ultraviolet rays, and a high heat resistance. It is a liquid crystal composition that satisfies at least one characteristic such as stability.
- One aspect of the present invention is a liquid crystal composition having an appropriate balance regarding at least two properties.
- Another aspect is a liquid crystal display device containing such a composition.
- the other aspect is a composition having properties such as appropriate optical anisotropy, large dielectric anisotropy, high stability to ultraviolet light, and short response time, large voltage holding ratio, large contrast ratio, long lifetime
- liquid crystal composition of the present invention or the liquid crystal display device of the present invention may be abbreviated as “composition” or “device”, respectively.
- a liquid crystal display element is a general term for a liquid crystal display panel and a liquid crystal display module.
- Liquid crystal compound means a compound having a liquid crystal phase such as a nematic phase or a smectic phase, or a compound having no liquid crystal phase but useful as a component of a composition. This useful compound has a six-membered ring such as 1,4-cyclohexylene and 1,4-phenylene, and its molecular structure is rod-like.
- An optically active compound or polymerizable compound may be added to the composition.
- Compound (1) means one compound or two or more compounds represented by formula (1). The same applies to compounds represented by other formulas. “At least one” with respect to “replaced” means that not only the position but also the number thereof may be selected without limitation.
- the upper limit temperature of the nematic phase may be abbreviated as “upper limit temperature”.
- the lower limit temperature of the nematic phase may be abbreviated as “lower limit temperature”.
- “High specific resistance” means that the composition has a large specific resistance not only at room temperature in the initial stage but also at a temperature close to the upper limit temperature of the nematic phase. It means having a large specific resistance even at a close temperature.
- “High voltage holding ratio” means that the device has a large voltage holding ratio not only at room temperature in the initial stage but also at a temperature close to the upper limit temperature of the nematic phase. It means having a large voltage holding ratio even at a temperature close to.
- the first component is one compound or two or more compounds.
- the “ratio of the first component” is expressed as a weight percentage (% by weight) of the first component based on the total weight of the liquid crystal composition. The same applies to the ratio of the second component.
- the ratio of the additive mixed with the composition is expressed in terms of weight percentage (% by weight) or weight parts per million (ppm) based on the total weight of the liquid crystal composition.
- R 1 is used for a plurality of compounds. In any two of these compounds, those selected for R 1 may be the same or different. For example, there is a case where R 1 of compound (1) is ethyl and R 1 of compound (1-1) is ethyl. In some cases, R 1 of compound (1) is ethyl and R 1 of compound (1-1) is propyl. This rule also applies to R 2 , X 5 , Y 1 and the like.
- the present invention includes the following items.
- R 1 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons, and R 2 and R 3 are independently 1 to 12 carbons.
- ring A and ring B are independently 1 , 4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, or 2,5-difluoro-1,4-phenylene;
- Z 1 independently is a single bond, ethylene or carbonyloxy,;
- X 1, X 2, X 3, and X 4 are each independently hydrogen or fluorine;
- m and n are independently , 2, or 3.
- Item 2 The liquid crystal composition according to item 1, wherein the first component is at least one compound selected from the group of compounds represented by formula (1-1) to formula (1-19).
- R 1 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons.
- Item 5 The liquid crystal composition according to any one of items 1 to 4, wherein the second component is at least one compound selected from the group of compounds represented by formulas (2-1) to (2-13).
- R 2 and R 3 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or carbon number in which at least one hydrogen is replaced by fluorine. 2 to 12 alkenyl.
- the second component is at least one compound selected from the group of compounds represented by formula (2-1) according to item 5, and a compound represented by formula (2-7) according to item 5 Item 2.
- Item 10 The liquid crystal composition according to any one of items 1 to 9, further containing at least one compound selected from the group of compounds represented by formula (3) as a third component.
- R 4 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons;
- ring C is 1,4-cyclohexylene, 1,4- Phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 1,3-dioxane-2,5-diyl, tetrahydropyran-2 , 5-diyl, or pyrimidine-2,5-diyl;
- Z 2 is a single bond, difluoromethyleneoxy, ethylene, or carbonyloxy;
- X 5 and X 6 are independently hydrogen or fluorine
- Y 1 is fluorine, chlorine, or trifluoromethoxy;
- p
- Item 20 The liquid crystal composition according to item 9, wherein the third component is at least one compound selected from the group of compounds represented by formula (3-1) to formula (3-24).
- R 4 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons;
- X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , and X 12 are independently hydrogen or fluorine;
- Y 1 is fluorine, chlorine, or trifluoromethoxy.
- Item 13 The liquid crystal composition according to item 10, wherein the third component is at least one compound selected from the group of compounds represented by formula (3-15) according to item 11.
- Item 17 The liquid crystal composition according to any one of items 10 to 16, wherein the ratio of the third component is in the range of 5% by weight to 65% by weight based on the total weight of the liquid crystal composition.
- Item 19 A liquid crystal display device comprising the liquid crystal composition according to any one of items 1 to 18.
- Item 20 The liquid crystal display element according to item 19, wherein the operation mode of the liquid crystal display element is a TN mode, an ECB mode, an OCB mode, an IPS mode, a PSA mode, or an FPA mode, and the driving method of the liquid crystal display element is an active matrix method.
- Item 19 Use of a liquid crystal composition according to any one of items 1 to 18 in a liquid crystal display device.
- the present invention includes the following items. 1) The above composition further containing an optically active compound, 2) the above composition further containing additives such as an antioxidant, an ultraviolet absorber, an antifoaming agent, a polymerizable compound, a polymerization initiator, 3) AM device containing the above composition, 4) Device containing the above composition and having a mode of TN, ECB, OCB, IPS, FFS or PSA, 5) Transmission containing the above composition 6) Use of the above composition as a composition having a nematic phase, 7) Use of the composition as an optically active composition by adding an optically active compound to the above composition.
- additives such as an antioxidant, an ultraviolet absorber, an antifoaming agent, a polymerizable compound, a polymerization initiator
- AM device containing the above composition 4) Device containing the above composition and having a mode of TN, ECB, OCB, IPS, FFS or PSA, 5) Transmission containing the above composition 6) Use of the above
- composition of the present invention will be described in the following order. First, the constitution of component compounds in the composition will be described. Second, the main characteristics of the component compounds and the main effects of the compounds on the composition will be explained. Third, the combination of components in the composition, the preferred ratio of the components, and the basis thereof will be described. Fourth, a preferred form of the component compound will be described. Fifth, specific examples of component compounds are shown. Sixth, additives that may be mixed into the composition will be described. Seventh, a method for synthesizing the component compounds will be described. Finally, the use of the composition will be described.
- composition of the component compounds in the composition will be described.
- the composition of the present invention is classified into Composition A and Composition B.
- the composition A may further contain other liquid crystal compounds, additives, impurities, and the like.
- the “other liquid crystal compound” is a liquid crystal compound different from the compound (1), the compound (2), and the compound (3).
- Such compounds are mixed into the composition for the purpose of further adjusting the properties.
- Additives include optically active compounds, antioxidants, ultraviolet absorbers, dyes, antifoaming agents, polymerizable compounds, polymerization initiators, and the like. Impurities are compounds mixed in a process such as synthesis of component compounds. Even if this compound is a liquid crystal compound, it is classified as an impurity here.
- Composition B consists essentially of a compound selected from compound (1), compound (2), and compound (3). “Substantially” means that the composition may contain additives and impurities, but does not contain a liquid crystal compound different from these compounds. Composition B has fewer components than composition A. From the viewpoint of reducing the cost, the composition B is preferable to the composition A. The composition A is preferable to the composition B from the viewpoint that the physical properties can be further adjusted by mixing other liquid crystal compounds.
- the main characteristics of the component compounds and the main effects of the compounds on the characteristics of the composition will be explained.
- the main characteristics of the component compounds are summarized in Table 2 based on the effects of the present invention.
- L means large or high
- M means moderate
- S means small or low.
- L, M, and S are classifications based on a qualitative comparison among the component compounds, and 0 (zero) means that the value is almost zero.
- Compound (1) increases the optical anisotropy and increases the dielectric anisotropy.
- Compound (2) increases the maximum temperature, decreases the minimum temperature, and decreases the viscosity.
- Compound (3) increases the maximum temperature and increases the dielectric anisotropy.
- the combination of the components in the composition is first component + second component and first component + second component + third component.
- a preferred combination of the components in the composition is (first component + second component + third component) in order to increase the dielectric anisotropy, decrease the viscosity, or decrease the minimum temperature.
- a desirable ratio of the first component is approximately 3% by weight or more for increasing the dielectric anisotropy, and approximately 25% by weight or less for decreasing the minimum temperature.
- a more desirable ratio is in the range of approximately 5% by weight to approximately 20% by weight.
- a particularly preferred ratio is in the range of approximately 7% by weight to approximately 15% by weight.
- a desirable ratio of the second component is approximately 25% by weight or more for increasing the maximum temperature or decreasing the viscosity, and approximately 97% by weight or less for decreasing the minimum temperature.
- a more desirable ratio is in the range of approximately 30% by weight to approximately 80% by weight.
- a particularly preferred ratio is in the range of approximately 35% by weight to approximately 75% by weight.
- a desirable ratio of the third component is approximately 5% by weight or more for increasing the dielectric anisotropy, and approximately 65% by weight or less for decreasing the minimum temperature.
- a more desirable ratio is in the range of approximately 10% by weight to approximately 60% by weight.
- a particularly desirable ratio is in the range of approximately 15% by weight to approximately 55% by weight.
- R 1 and R 4 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, or alkenyl having 2 to 12 carbons. Desirable R 1 or R 4 is alkyl having 1 to 12 carbons for increasing the stability to ultraviolet light or for the stability to heat.
- R 2 and R 3 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or 2 to 12 carbons in which at least one hydrogen is replaced by fluorine.
- Desirable R 2 or R 3 is alkenyl having 2 to 5 carbons for decreasing the viscosity, and alkyl having 1 to 7 carbons for increasing the stability to ultraviolet light or the stability to heat. is there.
- Preferred alkyl is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl. More desirable alkyl is ethyl, propyl, butyl, pentyl, or heptyl for decreasing the viscosity.
- Preferred alkoxy is methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, or heptyloxy. More desirable alkoxy is methoxy or ethoxy for decreasing the viscosity.
- Preferred alkenyl is vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, or 5-hexenyl. More desirable alkenyl is vinyl, 1-propenyl, 3-butenyl, or 3-pentenyl for decreasing the viscosity.
- the preferred configuration of —CH ⁇ CH— in these alkenyls depends on the position of the double bond.
- trans is preferable in alkenyl such as 1-propenyl, 1-butenyl, 1-pentenyl, 1-hexenyl, 3-pentenyl and 3-hexenyl.
- Cis is preferred for alkenyl such as 2-butenyl, 2-pentenyl, and 2-hexenyl.
- alkenyl in which at least one hydrogen is replaced by fluorine are 2,2-difluorovinyl, 3,3-difluoro-2-propenyl, 4,4-difluoro-3-butenyl, 5,5-difluoro-4 -Pentenyl, and 6,6-difluoro-5-hexenyl. Further preferred examples are 2,2-difluorovinyl and 4,4-difluoro-3-butenyl for decreasing the viscosity.
- Alkyl does not include cyclic alkyl.
- Alkoxy does not include cyclic alkoxy.
- Alkenyl does not include cyclic alkenyl.
- trans is preferable to cis for increasing the maximum temperature.
- Ring A and Ring B are independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, or 2,5-difluoro. -1,4-phenylene.
- n is 2 or 3
- any two rings A may be the same or different.
- Preferred ring A or ring B is 1,4-cyclohexylene for decreasing the viscosity, and 1,4-phenylene for increasing the optical anisotropy.
- Ring C is 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 3,5-difluoro-1,4-phenylene, 1,3-dioxane-2,5-diyl, tetrahydropyran-2,5-diyl, or pyrimidine-2,5-diyl.
- p is 2, 3, or 4
- any two rings C may be the same or different.
- Preferred ring C is 1,4-cyclohexylene for increasing the maximum temperature, 1,4-phenylene for increasing the optical anisotropy, and 3,5-difluoro for increasing the dielectric anisotropy. -1,4-phenylene.
- Z 1 is a single bond, ethylene, or carbonyloxy. When n is 2 or 3, any two Z 1 may be the same or different. Desirable Z 1 is a single bond for decreasing the viscosity, and carbonyloxy for increasing the maximum temperature. Z 2 is a single bond, difluoromethyleneoxy, ethylene, or carbonyloxy. When p is 2, 3, or 4, any two Z 2 may be the same or different. Preferred Z 2 is a single bond for decreasing the viscosity, and difluoromethyleneoxy for increasing the dielectric anisotropy.
- X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , and X 12 are independently hydrogen or fluorine.
- Preferred X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , or X 12 is fluorine for increasing the dielectric anisotropy. Yes, hydrogen to lower the viscosity.
- Y 1 is fluorine, chlorine, trifluoromethoxy, or trifluoromethyl. Desirable Y 1 is fluorine for decreasing the viscosity.
- m is 1, 2 or 3.
- Preferred m is 1 for decreasing the viscosity, and 2 or 3 for increasing the maximum temperature.
- n is 1, 2 or 3.
- Preferred n is 1 for decreasing the viscosity, and 3 for increasing the maximum temperature.
- p is 1, 2, 3, or 4. Desirable p is 2 for increasing the maximum temperature, and 3 for increasing the stability to ultraviolet light or heat.
- R 5 is alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons
- R 6 is independently alkyl having 1 to 12 carbons, or 1 to 12 carbons.
- R 7 and R 8 are independently straight-chain alkyl having 1 to 12 carbons or straight-chain alkenyl having 2 to 12 carbons.
- R 9 is independently straight chain alkyl having 1 to 12 carbons.
- Desirable compounds (1) are from the compound (1-1-1) to the compound (1-19-1). More desirable compounds (1) are the compound (1-6-1) and the compound (1-17-1). Particularly preferred compound (1) is compound (1-6-1). Desirable compounds (2) are from the compound (2-1-1) to the compound (2-13-1). More desirable compound (2) is (2-1-1), compound (2-5-1), compound (2-7-1), compound (2-10-1), and compound (2-13- 1). Particularly preferred compound (2) is compound (2-1-1). Desirable compounds (3) are from the compound (3-1-1) to the compound (3-24-1). More desirable compounds (3) are the compound (3-5-1), the compound (3-6-1), the compound (3-14-1), the compound (3-15-1), the compound (3-19- 1), a compound (32-1-1), and a compound (3-22-1). Particularly preferred compounds (3) are the compound (3-14-1), the compound (3-15-1), the compound (32-1-1), and the compound (3-22-1).
- additives that may be mixed with the composition will be described.
- Such additives are optically active compounds, antioxidants, ultraviolet absorbers, dyes, antifoaming agents, polymerizable compounds, polymerization initiators, and the like.
- An optically active compound is mixed with the composition for the purpose of inducing a helical structure of liquid crystal to give a twist angle. Examples of such a compound are the compound (4-1) to the compound (4-5).
- a desirable ratio of the optically active compound is approximately 5% by weight or less.
- a more desirable ratio is in the range of approximately 0.01% by weight to approximately 2% by weight.
- oxidation prevention An agent is mixed into the composition.
- Preferred examples of the antioxidant include a compound (5) where r is an integer of 1 to 9.
- r is 1, 3, 5, 7, or 9.
- Further preferred r is 1 or 7. Since the compound (5) in which r is 1 has high volatility, it is effective in preventing a decrease in specific resistance due to heating in the atmosphere. Since the compound (5) in which r is 7 has low volatility, it is effective in maintaining a large voltage holding ratio not only at room temperature but also at a temperature close to the upper limit temperature of the nematic phase after using the device for a long time.
- a desirable ratio of the antioxidant is approximately 50 ppm or more for achieving its effect, and is approximately 600 ppm or less for avoiding a decrease in the maximum temperature or avoiding an increase in the minimum temperature. A more desirable ratio is in the range of approximately 100 ppm to approximately 300 ppm.
- the ultraviolet absorber examples include benzophenone derivatives, benzoate derivatives, triazole derivatives and the like. Also preferred are light stabilizers such as sterically hindered amines.
- a desirable ratio of these absorbers and stabilizers is approximately 50 ppm or more for achieving the effect thereof, and approximately 10,000 ppm or less for avoiding a decrease in the maximum temperature or avoiding an increase in the minimum temperature. A more desirable ratio is in the range of approximately 100 ppm to approximately 10,000 ppm.
- a dichroic dye such as an azo dye or an anthraquinone dye is mixed with the composition in order to be adapted to a GH (guest host) mode element.
- a preferred ratio of the dye is in the range of approximately 0.01% by weight to approximately 10% by weight.
- an antifoaming agent such as dimethyl silicone oil or methylphenyl silicone oil is mixed with the composition.
- a desirable ratio of the antifoaming agent is approximately 1 ppm or more for obtaining the effect thereof, and approximately 1000 ppm or less for preventing a poor display.
- a more desirable ratio is in the range of approximately 1 ppm to approximately 500 ppm.
- a polymerizable compound is mixed with the composition in order to adapt to a PSA (polymer-sustained alignment) mode element.
- Preferred examples of the polymerizable compound are compounds having a polymerizable group such as acrylate, methacrylate, vinyl compound, vinyloxy compound, propenyl ether, epoxy compound (oxirane, oxetane), vinyl ketone and the like. Particularly preferred examples are acrylate or methacrylate derivatives.
- a desirable ratio of the polymerizable compound is approximately 0.05% by weight or more for obtaining the effect thereof, and approximately 10% by weight or less for preventing a display defect. A more desirable ratio is in the range of approximately 0.1% by weight to approximately 2% by weight.
- the polymerizable compound is preferably polymerized by UV irradiation or the like in the presence of a suitable initiator such as a photopolymerization initiator.
- a suitable initiator such as a photopolymerization initiator.
- Appropriate conditions for polymerization, the appropriate type of initiator, and the appropriate amount are known to those skilled in the art and are described in the literature.
- Irgacure 651 registered trademark; BASF
- Irgacure 184 registered trademark; BASF
- Darocur 1173 registered trademark; BASF
- a preferred ratio of the photopolymerization initiator is in the range of about 0.1% to about 5% by weight of the polymerizable compound, and a particularly preferable ratio is in the range of about 1% to about 3% by weight.
- Compound (3-15-1), compound (32-1-1), and compound (32-2-1) are synthesized by the method described in JP-A-10-251186. Antioxidants are commercially available.
- a compound of formula (5) where r is 1 is available from Sigma-Aldrich Corporation.
- Compound (5) or the like in which r is 7 is synthesized by the method described in US Pat. No. 3,660,505.
- the composition of the present invention mainly has a minimum temperature of about ⁇ 10 ° C. or lower, a maximum temperature of about 70 ° C. or higher, and an optical anisotropy in the range of about 0.07 to about 0.20.
- a device containing this composition has a large voltage holding ratio.
- This composition is suitable for an AM device.
- This composition is particularly suitable for a transmissive AM device.
- a composition having an optical anisotropy in the range of about 0.08 to about 0.25 by controlling the proportion of the component compounds or by mixing other liquid crystal compounds, and further from about 0.10 Compositions having optical anisotropy in the range of about 0.30 may be prepared.
- This composition can be used as a composition having a nematic phase, or can be used as an optically active composition by adding an optically active compound.
- This composition can be used for an AM device. Further, it can be used for PM elements.
- This composition can be used for an AM device and a PM device having modes such as PC, TN, STN, ECB, OCB, IPS, FFS, VA, and PSA.
- Use for an AM device having a TN, OCB, IPS mode or FFS mode is particularly preferable.
- the alignment of liquid crystal molecules when no voltage is applied may be parallel or perpendicular to the panel substrate.
- These elements may be reflective, transmissive, or transflective. Use in a transmissive element is preferred. It can also be used for an amorphous silicon-TFT device or a polycrystalline silicon-TFT device.
- NCAP non-curvilinear-aligned-phase
- PD polymer-dispersed
- the composition and this compound are used as the measurement object.
- the object to be measured was a composition
- the measurement object was a compound
- a sample for measurement was prepared by mixing this compound (15% by weight) with mother liquid crystals (85% by weight).
- the ratio of the compound and the mother liquid crystal is 10% by weight: 90% by weight, 5% by weight: 95% by weight, 1% by weight: 99% by weight in this order. changed.
- the maximum temperature, optical anisotropy, viscosity and dielectric anisotropy values for the compound were determined.
- the components of the mother liquid crystals are as follows. The ratio of each component is% by weight.
- NI Maximum temperature of nematic phase
- a sample was placed on a hot plate of a melting point measuring device equipped with a polarizing microscope and heated at a rate of 1 ° C./min. The temperature was measured when a part of the sample changed from a nematic phase to an isotropic liquid.
- the upper limit temperature of the nematic phase may be abbreviated as “upper limit temperature”.
- T C Minimum temperature of nematic phase
- Viscosity (bulk viscosity; ⁇ ; measured at 20 ° C .; mPa ⁇ s): An E-type viscometer was used for measurement.
- Viscosity (rotational viscosity; ⁇ 1; measured at 25 ° C .; mPa ⁇ s): The measurement was performed according to the method described in M. ⁇ Imai et al., Molecular Crystals and Liquid Crystals, Vol. 259, 37 (1995). A sample was put in a TN device having a twist angle of 0 ° and a distance (cell gap) between two glass substrates of 5 ⁇ m. A voltage was applied to this device in steps of 0.5 V in the range of 16 V to 19.5 V. After no application for 0.2 seconds, the application was repeated under the condition of only one rectangular wave (rectangular pulse; 0.2 seconds) and no application (2 seconds).
- the peak current (peak current) and peak time (peak time) of the transient current (transient current) generated by this application were measured.
- the value of rotational viscosity was obtained from these measured values and the calculation formula (8) described on page 40 in the paper by M. Imai et al.
- the value of dielectric anisotropy necessary for this calculation was determined by the method described below using the element whose rotational viscosity was measured.
- Threshold voltage (Vth; measured at 25 ° C .; V): An LCD5100 luminance meter manufactured by Otsuka Electronics Co., Ltd. was used for measurement.
- the light source is a halogen lamp.
- a sample was put in a normally white mode TN device in which the distance between two glass substrates (cell gap) was about 0.45 mm / ⁇ n ( ⁇ m) and the twist angle was 80 degrees.
- the voltage (32 Hz, rectangular wave) applied to this element was increased stepwise from 0V to 10V by 0.02V.
- the device was irradiated with light from the vertical direction, and the amount of light transmitted through the device was measured.
- a voltage-transmittance curve was created in which the transmittance was 100% when the light amount reached the maximum and the transmittance was 0% when the light amount was the minimum.
- the threshold voltage is a voltage when the transmittance reaches 90%.
- Voltage holding ratio (VHR-1; measured at 25 ° C .;%):
- the TN device used for the measurement has a polyimide alignment film, and the distance between two glass substrates (cell gap) is 5 ⁇ m. This element was sealed with an adhesive that was cured with ultraviolet rays after the sample was placed. The device was charged by applying a pulse voltage (60 microseconds at 5 V). The decaying voltage was measured for 16.7 milliseconds with a high-speed voltmeter, and the area A between the voltage curve and the horizontal axis in a unit cycle was determined. The area B is an area when it is not attenuated.
- the voltage holding ratio is a percentage of the area A with respect to the area B.
- Voltage holding ratio (VHR-2; measured at 80 ° C .;%):
- the TN device used for the measurement has a polyimide alignment film, and the distance between two glass substrates (cell gap) is 5 ⁇ m. This element was sealed with an adhesive that was cured with ultraviolet rays after the sample was placed.
- the TN device was charged by applying a pulse voltage (60 microseconds at 5 V).
- the decaying voltage was measured for 16.7 milliseconds with a high-speed voltmeter, and the area A between the voltage curve and the horizontal axis in a unit cycle was determined.
- the area B is an area when it is not attenuated.
- the voltage holding ratio is a percentage of the area A with respect to the area B.
- VHR-3 Voltage holding ratio
- the TN device used for measurement has a polyimide alignment film, and the cell gap is 5 ⁇ m.
- a sample was injected into this element and irradiated with light for 20 minutes.
- the light source is an ultra high pressure mercury lamp USH-500D (manufactured by USHIO), and the distance between the element and the light source is 20 cm.
- USH-500D ultra high pressure mercury lamp manufactured by USHIO
- a decaying voltage was measured for 16.7 milliseconds.
- a composition having a large VHR-3 has a large stability to ultraviolet light.
- VHR-3 is preferably 90% or more, and more preferably 95% or more.
- VHR-4 Voltage holding ratio
- the rise time ( ⁇ r: rise time; millisecond) is the time required for the transmittance to change from 90% to 10%.
- the fall time ( ⁇ f: fall time; millisecond) is the time required to change the transmittance from 10% to 90%.
- the response time is the sum of the rise time and the fall time thus obtained.
- Elastic constant (K; measured at 25 ° C .; pN): An HP4284A LCR meter manufactured by Yokogawa Hewlett-Packard Co., Ltd. was used for the measurement. A sample was put in a horizontal alignment cell in which the distance between two glass substrates (cell gap) was 20 ⁇ m. A charge of 0 to 20 volts was applied to the cell, and the capacitance and applied voltage were measured. Fitting the measured values of capacitance (C) and applied voltage (V) using “Liquid Crystal Device Handbook” (Nikkan Kogyo Shimbun), formulas (2.98) and (2.101) on page 75 Thus, the values of K11 and K33 were obtained from the formula (2.99). Next, K22 was calculated from the equation (3.18) on page 171 using the values of K11 and K33 obtained earlier. The elastic constant is an average value of K11, K22, and K33 thus obtained.
- GC-14B gas chromatograph manufactured by Shimadzu Corporation was used for measurement.
- the carrier gas is helium (2 mL / min).
- the sample vaporization chamber was set at 280 ° C, and the detector (FID) was set at 300 ° C.
- capillary column DB-1 (length 30 m, inner diameter 0.32 mm, film thickness 0.25 ⁇ m; stationary liquid phase is dimethylpolysiloxane; nonpolar) manufactured by Agilent Technologies Inc. was used.
- the column was held at 200 ° C. for 2 minutes and then heated to 280 ° C. at a rate of 5 ° C./min.
- a sample was prepared in an acetone solution (0.1% by weight), and 1 ⁇ L thereof was injected into the sample vaporization chamber.
- the recorder is a C-R5A Chromatopac manufactured by Shimadzu Corporation, or an equivalent product.
- the obtained gas chromatogram showed the peak retention time and peak area corresponding to the component compounds.
- capillary column As a solvent for diluting the sample, chloroform, hexane or the like may be used.
- the following capillary column may be used.
- HP-1 from Agilent Technologies Inc. (length 30 m, inner diameter 0.32 mm, film thickness 0.25 ⁇ m), Rtx-1 from Restek Corporation (length 30 m, inner diameter 0.32 mm, film thickness 0.25 ⁇ m), BP-1 (length 30 m, inner diameter 0.32 mm, film thickness 0.25 ⁇ m) manufactured by SGE International Pty.
- a capillary column CBP1-M50-025 length 50 m, inner diameter 0.25 mm, film thickness 0.25 ⁇ m
- Shimadzu Corporation may be used.
- the ratio of the liquid crystal compound contained in the composition may be calculated by the following method. Liquid crystalline compounds can be detected by gas chromatography. The area ratio of peaks in the gas chromatogram corresponds to the ratio (number of moles) of liquid crystal compounds. When the capillary column described above is used, the correction coefficient of each liquid crystal compound may be regarded as 1. Accordingly, the ratio (% by weight) of the liquid crystal compound is calculated from the peak area ratio.
- the present invention will be described in detail by examples. The present invention is not limited by the following examples.
- the compounds in Comparative Examples and Examples were represented by symbols based on the definitions in Table 3 below.
- Table 3 the configuration regarding 1,4-cyclohexylene is trans.
- the number in parentheses after the symbol corresponds to the compound number.
- the symbol ( ⁇ ) means other liquid crystal compounds.
- the ratio (percentage) of the liquid crystal compound is a weight percentage (% by weight) based on the total weight of the liquid crystal composition, and the liquid crystal composition contains impurities.
- a liquid crystal composition was prepared by replacing the compound of the first component of the present invention with the compound of the third component (3-14-1) in the composition of Example 1. This composition was prepared and measured by the method described above. The components and properties of this composition are as follows.
- the composition of Comparative Example 1 has a higher minimum temperature of the nematic phase and a small dielectric anisotropy.
- Example 1 to Example 9 have a large positive dielectric anisotropy compared to that of Comparative Example 1. Therefore, the liquid crystal composition according to the present invention has excellent characteristics.
- the liquid crystal composition satisfies at least one characteristic or has an appropriate balance with respect to at least two characteristics.
- a liquid crystal display element containing such a composition becomes an AM element having a short response time, a large voltage holding ratio, a large contrast ratio, a long lifetime, and the like, and thus can be used for a liquid crystal projector, a liquid crystal television, and the like.
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Abstract
Description
ここで、R1は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり、R2およびR3は独立して、炭素数1から12のアルキル、炭素数1から12のアルコキシ、炭素数2から12のアルケニル、または少なくとも1つの水素がフッ素で置き換えられた炭素数2から12のアルケニルであり;環Aおよび環Bは独立して、1,4-シクロへキシレン、1,4-フェニレン、2-フルオロ-1,4-フェニレン、3-フルオロ-1,4-フェニレン、または2,5-ジフルオロ-1,4-フェニレンであり;Z1は独立して、単結合、エチレン、またはカルボニルオキシであり;X1、X2、X3、およびX4は独立して、水素またはフッ素であり;mおよびnは独立して、1、2、または3である。
ここで、R1は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり、R2およびR3は独立して、炭素数1から12のアルキル、炭素数1から12のアルコキシ、炭素数2から12のアルケニル、または少なくとも1つの水素がフッ素で置き換えられた炭素数2から12のアルケニルであり;環Aおよび環Bは独立して、1,4-シクロへキシレン、1,4-フェニレン、2-フルオロ-1,4-フェニレン、3-フルオロ-1,4-フェニレン、または2,5-ジフルオロ-1,4-フェニレンであり;Z1は独立して、単結合、エチレン、またはカルボニルオキシであり;X1、X2、X3、およびX4は独立して、水素またはフッ素であり;mおよびnは独立して、1、2、または3である。
ここで、R1は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルである。
ここで、R2およびR3は独立して、炭素数1から12のアルキル、炭素数1から12のアルコキシ、炭素数2から12のアルケニル、または少なくとも1つの水素がフッ素で置き換えられた炭素数2から12のアルケニルである。
ここで、R4は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり;環Cは、1,4-シクロへキシレン、1,4-フェニレン、2-フルオロ-1,4-フェニレン、3-フルオロ-1,4-フェニレン、3,5-ジフルオロ-1,4-フェニレン、1,3-ジオキサン-2,5-ジイル、テトラヒドロピラン-2,5-ジイル、またはピリミジン-2,5-ジイルであり;Z2は、単結合、ジフルオロメチレンオキシ、エチレン、またはカルボニルオキシであり;X5およびX6は独立して、水素またはフッ素であり;Y1は、フッ素、塩素、またはトリフルオロメトキシであり;pは、1、2、3、または4である。
ここで、R4は炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり;X5、X6、X7、X8、X9、X10、X11、およびX12は独立して、水素またはフッ素であり;Y1は、フッ素、塩素、またはトリフルオロメトキシである。
nは、1、2、または3である。好ましいnは粘度を下げるために1であり、上限温度を上げるために3である。
pは、1、2、3、または4である。好ましいpは上限温度を上げるために2であり、紫外線または熱に対する安定性などを上げるために3である。
さらに好ましい化合物(1)は、化合物(1-6-1)および化合物(1-17-1)である。特に好ましい化合物(1)は、化合物(1-6-1)である。好ましい化合物(2)は、化合物(2-1-1)から化合物(2-13-1)である。さらに好ましい化合物(2)は、(2-1-1)、化合物(2-5-1)、化合物(2-7-1)、化合物(2-10-1)、および化合物(2-13-1)である。特に好ましい化合物(2)は、化合物(2-1-1)である。好ましい化合物(3)は、化合物(3-1-1)から化合物(3-24-1)である。さらに好ましい化合物(3)は、化合物(3-5-1)、化合物(3-6-1)、化合物(3-14-1)、化合物(3-15-1)、化合物(3-19-1)、化合物(3-21-1)、および化合物(3-22-1)である。特に好ましい化合物(3)は、化合物(3-14-1)、化合物(3-15-1)、化合物(3-21-1)、および化合物(3-22-1)である。
P=2×(d2-d1)×tanθ
表3において、1,4-シクロヘキシレンに関する立体配置はトランスである。記号の後にあるかっこ内の番号は化合物の番号に対応する。(-)の記号はその他の液晶性化合物を意味する。液晶性化合物の割合(百分率)は、液晶組成物の全重量に基づいた重量百分率(重量%)であり、液晶組成物には不純物が含まれている。最後に、組成物の特性値をまとめた。
3-BB(F)B(F,F)-CF3 (1-6-1) 10%
V-HH-3 (2-1-1) 45%
V-HHB-1 (2-5-1) 10%
1-BB(F)B-2V (2-7-1) 9%
2-BB(F)B-2V (2-7-1) 5%
3-BB(F)B-2V (2-7-1) 3%
3-BB(F,F)XB(F,F)-F (3-15-1) 8%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 3%
4-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 7%
NI=76.8℃;Tc<-30℃;Δn=0.127;Δε=6.7;Vth=2.21V;η=8.6mPa・s.
実施例1の組成物において、本発明の第1成分の化合物を第3成分の化合物(3-14-1)に置き換えた液晶組成物とした。本組成物を調製し、上述した方法により測定した。この組成物の成分および特性は下記のとおりである。
V-HH-3 (2-1-1) 45%
V-HHB-1 (2-5-1) 10%
1-BB(F)B-2V (2-7-1) 9%
2-BB(F)B-2V (2-7-1) 5%
3-BB(F)B-2V (2-7-1) 3%
3-BB(F)B(F,F)-F (3-14-1) 10%
3-BB(F,F)XB(F,F)-F (3-15-1) 8%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 3%
4-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 7%
NI=77.1℃;Tc<-20℃;Δn=0.127;Δε=5.6;Vth=2.44V;η=7.2mPa・s.
比較例1の組成物は実施例1と較べて、ネマチック相の下限温度が高く、誘電率異方性が正に小さい。
3-B(F)B(F,F)-CF3 (1-5-1) 3%
3-BB(F)B(F,F)-CF3 (1-6-1) 4%
3-BBB(F)B(F,F)-CF3 (1-17-1) 3%
2-HH-3 (2-1-1) 5%
3-HH-4 (2-1-1) 18%
3-HB-O2 (2-2-1) 5%
5-HB-O2 (2-2-1) 4%
3-HHB-1 (2-5-1) 5%
3-HHB-O1 (2-5-1) 4%
3-B(F)BB-2 (2-8-1) 3%
3-HB-CL (3-1-1) 7%
3-HHB-CL (3-4-1) 5%
3-HHXB(F,F)-F (3-6-1) 8%
3-HHEB(F,F)-F (3-8-1) 3%
3-HBEB(F,F)-F (3-11-1) 3%
3-BB(F,F)XB(F,F)-F (3-15-1) 5%
3-HBBXB(F,F)-F (3-21-1) 5%
5-HBBXB(F,F)-F (3-21-1) 3%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 3%
4-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 4%
NI=80.6℃;Tc<-20℃;Δn=0.108;Δε=8.6;Vth=2.06V;η=20.0mPa・s.
3-BB(F,F)-CF3 (1-4-1) 4%
3-BBB(F,F)-CF3 (1-7-1) 4%
3-BB(F)B(F)B(F,F)-CF3
(1-18-1) 4%
2-HH-3 (2-1-1) 10%
3-HH-4 (2-1-1) 10%
3-HH-5 (2-1-1) 5%
V2-BB-1 (2-3-1) 5%
3-HHEH-5 (2-4-1) 3%
1V2-HHB-3 (2-5-1) 5%
5-HBB-2 (2-6-1) 5%
3-HHEBH-5 (2-10-1) 3%
3-HHB(F,F)-F (3-5-1) 8%
3-HBB-F (3-12-1) 3%
3-BB(F)B(F,F)-F (3-14-1) 5%
3-BB(F,F)XB(F,F)-F
(3-15-1) 6%
3-HHBB(F,F)-F (3-19-1) 4%
3-HHB(F)B(F,F)-F (3-20-1) 4%
3-HB(F)B(F,F)XB(F,F)-F
(3-21-3) 6%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 6%
NI=82.7℃;Tc<-20℃;Δn=0.115;Δε=9.1;Vth=2.06V;η=24.3mPa・s.
3-B(F)B(F)-CF3 (1-3-1) 4%
3-B(F)B(F)B(F)-CF3 (1-8-1) 5%
3-BB(F,F)B(F)-CF3 (1-14-1) 5%
V-HH-3 (2-1-1) 23%
1V-HH-3 (2-1-1) 7%
7-HB-1 (2-2-1) 4%
V-HHB-1 (2-5-1) 8%
V2-HHB-1 (2-5-1) 8%
5-HBBH-3 (2-11-1) 4%
1V2-BB-F (3-2 ) 4%
1V2-BB-CL (3-3 ) 4%
3-HHXB(F)-OCF3 (3-7-1) 5%
3-BB(F,F)XB(F)-OCF3 (3-16-1) 5%
3-BB(F,F)XB(F)-F (3-18-1) 4%
3-BB(F)B(F,F)XB(F)-F
(3-22-2) 10%
NI=70.4℃;Tc<-20℃;Δn=0.100;Δε=7.7;Vth=1.91V;η=14.2mPa・s.
3-BB(F)-CF3 (1-1-1) 4%
3-BB(F)B(F)-CF3 (1-9-1) 4%
3-BBB(F)-CF3 (1-11-1) 4%
V-HH-3 (2-1-1) 20%
1V2-HH-3 (2-1-1) 10%
V-HHB-1 (2-5-1) 10%
3-HB(F)HH-5 (2-9-1) 3%
3-HGB(F,F)-F (3-9-1) 5%
3-GHB(F,F)-F (3-10-1) 5%
3-BB(F,F)XB(F,F)-F (3-15-1) 10%
3-BBXB(F,F)-F (3-17-1) 10%
3-HB(F)B(F,F)XB(F,F)-F
(3-21-3) 5%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 5%
3-GB(F)B(F,F)XB(F,F)-F
(3-24-1) 5%
NI=77.3℃;Tc<-20℃;Δn=0.120;Δε=10.3;Vth=1.83V;η=18.0mPa・s.
3-B(F)B-CF3 (1-2-1) 4%
3-B(F)B(F)B-CF3 (1-10-1) 4%
3-BB(F)B-CF3 (1-12-1) 4%
V-HH-4 (2-1-1) 17%
V-HH-5 (2-1-1) 7%
1V-HH-4 (2-1-1) 4%
3-HHB-O1 (2-5-1) 4%
2-BB(F)B-3 (2-7-1) 4%
2-BB(F)B-5 (2-7-1) 4%
5-HBB(F)B-2 (2-13-1) 4%
3-HBB(F,F)-F (3-13-1) 8%
3-BB(F)B(F,F)-F (3-14-1) 4%
3-BB(F,F)XB(F,F)-F (3-15-1) 8%
3-HHBB(F,F)-F (3-19-1) 4%
5-HHBB(F,F)-F (3-19-1) 4%
3-HBBXB(F,F)-F (3-21-1) 4%
5-HBBXB(F,F)-F (3-21-1) 4%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 4%
4-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 4%
NI=86.4℃;Tc<-30℃;Δn=0.134;Δε=8.7;Vth=2.21V;η=25.9mPa・s.
3-BB(F)B(F,F)-CF3 (1-6-1) 4%
3-B(F)B(F,F)B(F,F)-CF3
(1-16-1) 4%
3-BBB(F,F)B(F,F)-CF3
(1-19-1) 4%
3-HH-4 (2-1-1) 25%
3-HH-5 (2-1-1) 10%
1-BB-3 (2-3-1) 5%
3-HHB-1 (2-5-1) 8%
3-HHB-3 (2-5-1) 5%
5-HB(F)BH-3 (2-12-1) 3%
3-HB-CL (3-1-1) 4%
3-HHB-CL (3-4-1) 4%
1-HHXB(F,F)-F (3-6-1) 4%
3-HBBXB(F,F)-F (3-21-1) 6%
3-HBB(F,F)XB(F,F)-F
(3-21-2) 5%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 5%
3-B(F)B(F,F)XB(F)B(F,F)-F
(3-23-1) 4%
NI=92.1℃;Tc<-30℃;Δn=0.114;Δε=9.3;Vth=2.28V;η=19.8mPa・s.
3-BB(F)B(F,F)-CF3 (1-6-1) 4%
3-B(F)BB-CF3 (1-13-1) 3%
3-B(F)B(F,F)B(F)-CF3
(1-15-1) 3%
V-HH-3 (2-1-1) 20%
2-HH-3 (2-1-1) 5%
VFF-HH-3 (2-1) 5%
3-HH-O1 (2-1-1) 5%
3-HB-O1 (2-2-1) 5%
V-HHB-1 (2-5-1) 8%
1V2-HHB-1 (2-5-1) 4%
VFF-HHB-1 (2-5) 3%
5-B(F)BB-2 (2-8-1) 3%
3-BB(F,F)XB(F,F)-F
(3-15-1) 5%
3-BBXB(F,F)-F (3-17-1) 5%
3-HBBXB(F,F)-F (3-21-1) 5%
3-HB(F)B(F,F)XB(F,F)-F
(3-21-3) 5%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 6%
3-Py-BB-F (3) 3%
1O1-HBBH-5 (-) 3%
NI=81.2℃;Tc<-20℃;Δn=0.118;Δε=7.2;Vth=2.27V;η=15.0mPa・s.
V2-BB(F)B(F,F)-CF3
(1-6-1) 4%
V2-BB(F)B(F)-CF3 (1-9-1) 4%
2-HH-5 (2-1-1) 5%
V-HH-4 (2-1-1) 10%
V-HH-5 (2-1-1) 10%
1V2-HH-2 (2-1-1) 5%
V2-B(F)BB-2 (2-8-1) 4%
2-B(F)BB-2V (2-8-1) 4%
3-HHXB(F,F)-F (3-6-1) 9%
3-HBB(F,F)-F (3-13-1) 10%
3-BBXB(F,F)-F (3-17-1) 9%
3-HHBB(F,F)-F (3-19-1) 5%
3-HBBXB(F,F)-F (3-21-1) 6%
5-HBBXB(F,F)-F (3-21-1) 5%
3-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 6%
4-BB(F)B(F,F)XB(F,F)-F
(3-22-1) 4%
NI=86.7℃;Tc<-20℃;Δn=0.131;Δε=8.5;Vth=2.23V;η=23.5mPa・s.
Claims (21)
- 第一成分として式(1)で表される化合物の群から選択された少なくとも1つの化合物、および第二成分として式(2)で表される化合物の群から選択された少なくとも1つの化合物を含有し、そしてネマチック相を有する液晶組成物。
ここで、R1は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり、R2およびR3は独立して、炭素数1から12のアルキル、炭素数1から12のアルコキシ、炭素数2から12のアルケニル、または少なくとも1つの水素がフッ素で置き換えられた炭素数2から12のアルケニルであり;環Aおよび環Bは独立して、1,4-シクロへキシレン、1,4-フェニレン、2-フルオロ-1,4-フェニレン、3-フルオロ-1,4-フェニレン、または2,5-ジフルオロ-1,4-フェニレンであり;Z1は独立して、単結合、エチレン、またはカルボニルオキシであり;X1、X2、X3、およびX4は独立して、水素またはフッ素であり;mおよびnは独立して、1、2、または3である。 - 第一成分が請求項2に記載の式(1-6)で表される化合物の群から選択された少なくとも1つの化合物である請求項1に記載の液晶組成物。
- 第一成分が請求項2に記載の式(1-17)で表される化合物の群から選択された少なくとも1つの化合物である請求項1に記載の液晶組成物。
- 第二成分が請求項5に記載の式(2-1)で表される化合物の群から選択された少なくとも1つの化合物である請求項1に記載の液晶組成物。
- 第二成分が請求項5に記載の式(2-13)で表される化合物の群から選択された少なくとも1つの化合物である請求項1に記載の液晶組成物。
- 第二成分が、請求項5に記載の式(2-1)で表される化合物の群から選択された少なくとも1つの化合物、および請求項5に記載の式(2-7)で表される化合物の群から選択された少なくとも1つの化合物の混合物である請求項1に記載の液晶組成物。
- 液晶組成物の全重量に基づいて、第一成分の割合が3重量%から25重量%の範囲であり、第二成分の割合が25重量%から97重量%の範囲である請求項1から8のいずれか1項に記載の液晶組成物。
- 第三成分として式(3)で表される化合物の群から選択された少なくとも1つの化合物をさらに含有する請求項1から9のいずれか1項に記載の液晶組成物。
ここで、R4は、炭素数1から12のアルキル、炭素数1から12のアルコキシ、または炭素数2から12のアルケニルであり;環Cは、1,4-シクロへキシレン、1,4-フェニレン、2-フルオロ-1,4-フェニレン、3-フルオロ-1,4-フェニレン、3,5-ジフルオロ-1,4-フェニレン、1,3-ジオキサン-2,5-ジイル、テトラヒドロピラン-2,5-ジイル、またはピリミジン-2,5-ジイルであり;Z2は、単結合、ジフルオロメチレンオキシ、エチレン、またはカルボニルオキシであり;X5およびX6は独立して、水素またはフッ素であり;Y1は、フッ素、塩素、またはトリフルオロメトキシであり;pは、1、2、3、または4である。 - 第三成分が請求項11に記載の式(3-14)で表される化合物の群から選択された少なくとも1つの化合物である請求項10に記載の液晶組成物。
- 第三成分が請求項11に記載の式(3-15)で表される化合物の群から選択された少なくとも1つの化合物である請求項10に記載の液晶組成物。
- 第三成分が請求項11に記載の式(3-17)で表される化合物の群から選択された少なくとも1つの化合物である請求項10に記載の液晶組成物。
- 第三成分が請求項11に記載の式(3-21)で表される化合物の群から選択された少なくとも1つの化合物である請求項10に記載の液晶組成物。
- 第三成分が請求項11に記載の式(3-22)で表される化合物の群から選択された少なくとも1つの化合物である請求項10に記載の液晶組成物。
- 液晶組成物の全重量に基づいて、第三成分の割合が5重量%から65重量%の範囲である請求項10から16のいずれか1項に記載の液晶組成物。
- ネマチック相の上限温度が70℃以上であり、波長589nmにおける光学異方性(25℃)が0.07以上であり、そして周波数1kHzにおける誘電率異方性(25℃)が2以上である請求項1から17のいずれか1項に記載の液晶組成物。
- 請求項1から18のいずれか1項に記載の液晶組成物を含有する液晶表示素子。
- 液晶表示素子の動作モードが、TNモード、ECBモード、OCBモード、IPSモード、PSAモード、またはFPAモードであり、液晶表示素子の駆動方式がアクティブマトリックス方式である請求項19に記載の液晶表示素子。
- 請求項1から18のいずれか1項に記載の液晶組成物の液晶表示素子における使用。
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JPWO2015056540A1 (ja) * | 2013-10-17 | 2017-03-09 | Jnc株式会社 | 液晶組成物および液晶表示素子 |
JPWO2016059667A1 (ja) * | 2014-10-14 | 2017-04-27 | Dic株式会社 | 組成物及びそれを使用した液晶表示素子 |
US10953029B2 (en) | 2015-09-23 | 2021-03-23 | Merck Sharp & Dohme Corp. | 4′-Substituted nucleoside reverse transcriptase inhibitors and preparations thereof |
JP2022514872A (ja) * | 2018-12-20 | 2022-02-16 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 液晶媒体 |
JP7581203B2 (ja) | 2018-12-20 | 2024-11-12 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 液晶媒体 |
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CN104531169A (zh) * | 2015-01-09 | 2015-04-22 | 石家庄诚志永华显示材料有限公司 | 液晶组合物及其应用 |
WO2017183468A1 (ja) * | 2016-04-20 | 2017-10-26 | Dic株式会社 | 組成物及びそれを使用した液晶表示素子 |
CN107557019A (zh) * | 2016-06-30 | 2018-01-09 | 石家庄诚志永华显示材料有限公司 | 液晶组合物 |
CN107760318B (zh) * | 2016-08-15 | 2021-01-26 | 江苏和成显示科技有限公司 | 液晶组合物及液晶显示器件 |
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