CN112080287B - 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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- CN112080287B CN112080287B CN201910516663.1A CN201910516663A CN112080287B CN 112080287 B CN112080287 B CN 112080287B CN 201910516663 A CN201910516663 A CN 201910516663A CN 112080287 B CN112080287 B CN 112080287B
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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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- 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
- C09K19/46—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing esters
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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
Abstract
The disclosure relates to a liquid crystal composition, a liquid crystal display element containing the liquid crystal composition and a liquid crystal display, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound shown as a formula I, one or more compounds shown as a formula II and one or more polymerizable compounds, and has a large K value, a high Clearing Point (CP) and a large dielectric (delta epsilon).
Description
Technical Field
The present disclosure relates to a liquid crystal composition, a liquid crystal display element including the same, and a liquid crystal display.
Background
The 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), vertical Alignment (VA) mode. The following characteristics are required for the liquid crystal composition regardless of the display mode:
(1) The chemical and physical properties are stable; (2) low viscosity; (3) has a suitable dielectric Δε; (4) a suitable refractive index Δn; (5) good miscibility with other liquid crystal compounds.
The TFT-LCD products in early commercial use basically adopted a TN display mode, and the biggest problem is the narrow viewing angle. With the increase of the product size, particularly the application in the field of TV, an IPS display mode and a VA display mode with a wide view angle are developed and applied in sequence.
In addition, the liquid crystal media used for display elements such as FFS mode, IPS mode, and VA mode are not perfect per se, and the liquid crystal materials used for display devices are required to have (1) a low driving voltage: the liquid crystal material has proper negative dielectric anisotropy and elasticity coefficient K; (2) fast response: the liquid crystal material has proper rotational viscosity gamma 1 and elasticity coefficient K; (3) high reliability: high charge retention rate, high specific resistance, excellent high temperature stability, and strict requirements for stability of irradiation with UV light or conventional backlight illumination. Along with the faster and faster technology updating speed of LCD products, the requirement on the response speed of LCD products is higher and higher, and besides the response speed of device manufacturers is improved by reducing the thickness d of the box, in practical application, the response speed of our liquid crystal materials is also required to be improved higher.
At present, a liquid crystal composition which further improves the response speed of a display device while maintaining other properties is still desired.
Disclosure of Invention
As a result of intensive studies to solve the problems occurring in the prior art, the present inventors have surprisingly found that a liquid crystal composition having a large K value, a high Clearing Point (CP), and a large dielectric constant (. DELTA.. Epsilon.) by using a liquid crystal composition comprising a combination of the aforementioned compound represented by formula I, one or more compounds represented by formula II, and one or more polymerizable compounds.
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 wide temperature display range, a low driving voltage, a fast response speed, and a better charge retention ratio (VHR).
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 wide temperature display range, a low driving voltage, and a rapid response speed.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
the present disclosure provides liquid crystal compositions comprising a compound of formula I, one or more compounds of formula II, and one or more polymerizable compounds,
in formula II, R 1 、R 2 Each 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;
R 1 、R 2 -CH not linked to any one or more of the groups shown 2 -optionally substituted with cyclopentylene, cyclobutylene or cyclopropyl ene;
Z 1 、Z 2 each independently represents a single bond, -CH 2 CH 2 -or-CH 2 O-；
Each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene, 1, 4-phenylene or fluoro 1, 4-phenylene;
m, n each independently represents 0, 1 or 2 and m+n.ltoreq.2.
The "polymerizable compound" mentioned above means a compound having a polymerizable group in the compound so as to be capable of forming a polymer by polymerization. The polymerizable compound is not particularly limited.
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 addressed display element or a passive matrix addressed 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 comprises a compound shown as a formula I, one or more compounds shown as a formula II and one or more polymerizable compounds,
in formula II, R 1 、R 2 Each 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;
R 1 、R 2 -CH not linked to any one or more of the groups shown 2 -optionally substituted with cyclopentylene, cyclobutylene or cyclopropyl ene;
Z 1 、Z 2 each independently represents a single bond, -CH 2 CH 2 -or-CH 2 O-；
Each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene, 1, 4-phenylene or fluoro 1, 4-phenylene;
m, n each independently represents 0, 1 or 2 and m+n.ltoreq.2.
Examples of the alkyl group having 1 to 10 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, hexyl, heptyl, octyl, nonyl, decyl and the like.
Examples of the alkoxy group having 1 to 10 carbon atoms include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, pentoxy, hexoxy, heptoxy, octoxy, nonoxy, decyloxy and the like.
Examples of the alkenyl group having 2 to 10 carbon atoms include vinyl, 1-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl and 3-hexenyl.
The "fluoro-substituted" group in the above-mentioned fluoro-substituted alkyl group having 1 to 10 carbon atoms, fluoro-substituted alkoxy group having 1 to 10 carbon atoms, fluoro-substituted alkenyl group having 2 to 10 carbon atoms, or fluoro-substituted alkenyloxy group having 3 to 8 carbon atoms may be monofluoro-substituted, or difluoro-substituted, trifluoro-substituted or other multi-fluoro-substituted, or perfluoro-substituted, and the number of fluoro-substituted groups is not particularly limited. Examples of the fluorine-substituted alkyl group having 1 to 10 carbon atoms include, but are not limited to, fluoromethyl group, difluoromethyl group, trifluoromethyl group, 1-fluoroethyl group, 2-fluoroethyl group, 1, 2-difluoroethyl group, 1, 2-trifluoroethyl group, 1, 2-pentafluoroethyl group and the like.
The liquid crystal composition of the present disclosure contains the compound represented by the aforementioned formula ii so as to have negative dielectric anisotropy, thereby being capable of adjusting the driving voltage of the liquid crystal composition.
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the above formula II is selected from the group consisting of compounds represented by the following formulas II-1 to II-14:
wherein:
R 1 、R 2 each independently represents an alkyl group having 1 to 10 carbon atoms, and a fluorine-substituted carbon atom having 1 to 10 carbon atomsAn alkyl group, 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;
R 1 、R 2 -CH not linked to any one or more of the groups shown 2 Optionally substituted with cyclopentylene, cyclobutylene or cyclopropyl ene.
In the liquid crystal composition of the present disclosure, the aforementioned "polymerizable compound" refers to a compound having a polymerizable group therein so as to be capable of forming a polymer by polymerization. The polymerizable compound is not particularly limited, and is preferably selected from the group consisting of the formulae RM-1 to RM-8.
The liquid crystal composition of the present disclosure preferably further comprises one or more compounds represented by formula iii in addition to the compound represented by formula I:
in the formula III, R 3 、R 4 Each 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;
each independently represents1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.
By further containing a compound represented by formula III in addition to the compound represented by formula I in the liquid crystal composition of the present disclosure, a liquid crystal composition having a low rotational viscosity, an improved response speed, and good miscibility with other compounds can be obtained.
In the liquid crystal composition of the present disclosure, preferably, the aforementioned compound represented by formula iii other than the compound represented by formula I is selected from the group consisting of compounds represented by the following formulas iii-1 to iii-3:
wherein, the liquid crystal display device comprises a liquid crystal display device,
in the formulae III-1 to III-3, R 3 、R 4 Each 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 of formula iv:
in the formula IV, R 5 、R 6 Each 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;
each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenyleneA base. The liquid crystal composition also contains the compound shown in the formula IV, thereby having high clearing point and elastic constant, especially the splay elastic constant K 33 。
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the aforementioned formula IV is selected from the group consisting of compounds represented by the following formulas IV-1 to IV-3:
wherein, the liquid crystal display device comprises a liquid crystal display device,
R 5 、R 6 each 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 of formula v:
in V, R 7 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, or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms; r is R 7 -CH not linked to any one or more of the groups shown 2 -optionally substituted with cyclopentylene, cyclobutylene or cyclopropyl ene;
R 8 represents an alkyl group having 1 to 10 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.
The liquid crystal composition also contains the compound shown in the formula V, so that the liquid crystal composition has larger negative dielectric anisotropy, and the driving voltage of a device is reduced.
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the aforementioned formula v is selected from the group consisting of compounds represented by the following formulas v-1 to v-12:
wherein R is 71 、R 81 Each independently represents an alkyl group having 1 to 10 carbon atoms.
Preferably, in the liquid crystal composition of the present disclosure, the compound represented by the aforementioned formula I is added to the liquid crystal composition in an amount (mass ratio) of 1 to 15%, preferably 5 to 10%, based on 100 mass% of the total of the components other than the polymerizable compound; the addition amount (mass ratio) of the compound shown in the formula II in the liquid crystal composition is 15-50%, preferably 25-40%; the addition amount (mass ratio) of the compound represented by the formula III in the liquid crystal composition is 10-50%, preferably 20-45%; the addition amount (mass ratio) of the compound shown in the formula IV in the liquid crystal composition is 0-35%, preferably 5-25%; the compound of formula V is added to the liquid crystal composition in an amount of 0 to 20% by mass, preferably 3 to 15% by mass; the polymerizable compound is added in an amount of 0.01 to 1%, preferably 0.03 to 0.2% based on the total mass of the liquid crystal.
In the liquid crystal composition of the present disclosure, optionally, a dopant which introduces various functions may be added, and in the case of containing the 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 ultraviolet ray absorber may be exemplified by,
t represents an integer of 1 to 10.
[ 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.
Alternatively, the liquid crystal display element or liquid crystal display is preferably an active matrix liquid crystal display element or liquid crystal display.
Optionally, the active matrix display element or display is an IPS-TFT/FFS-TFT liquid crystal display element or display.
The liquid crystal display element or the liquid crystal display containing the compound or the liquid crystal composition has wider nematic phase temperature range, faster response speed and lower cell thickness.
Examples
In order to more clearly illustrate the present disclosure, the present disclosure is further described below in connection with preferred embodiments. It is to be understood by persons of ordinary skill in the art that the following detailed description is illustrative and not restrictive, and should not be taken as limiting the scope of the present disclosure.
In the specification, unless specified otherwise, the percentages refer to mass percentages, the temperature is in degrees centigrade (DEG C), and the specific meanings and testing conditions of other symbols are as follows:
cp represents a liquid crystal clearing point (DEG C), and is tested by DSC quantification;
Δn represents optical anisotropy, n o Refractive index of ordinary ray, n e The refractive index of the extraordinary ray is 25+/-2 ℃ and is measured by an Abbe refractometer at 589 nm;
delta epsilon represents dielectric anisotropy, delta epsilon=epsilon ∥ -ε ⊥ Wherein ε is ∥ For dielectric constant parallel to the molecular axis ε ⊥ For a dielectric constant perpendicular to the molecular axis, the test conditions were 25.+ -. 0.5 ℃ and 20 μm parallel boxesINSTC, ALCT-IR1 test;
γ1 represents rotational viscosity (mPas) under conditions of 25.+ -. 0.5 ℃ and 20 μm parallel box, INSTEC: ALCT-IR1 test;
k11 is the torsional elastic constant, K33 is the splay elastic constant, and the test conditions are: 25 ℃, INSTEC, ALCT-IR1, 18 micron vertical box;
VHR is charge retention, test conditions are: 25 ℃ of,
The preparation method of the liquid crystal composition comprises the following steps: and weighing all the liquid crystal monomers according to a certain proportion, putting the liquid crystal monomers into a stainless steel beaker, putting the stainless steel beaker with all the liquid crystal monomers on a magnetic stirring instrument, 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 expressed by codes, and the codes of the liquid crystal ring structure, the end group and the connecting group are expressed by the following table 1 and table 2.
Table 1 corresponding codes of the ring structure
TABLE 2 correspondence code of end groups to linking groups
Examples:
the code is CC-Cp-V1;
the code is CPY-2-O2;
the code is CCY-3-O2; />
The code is COY-3-O2;
the code is CCOY-3-O2;
the code is Sb-CpO-O4;
the code is Sc-CpO-O4.
Example 1
The formulation and corresponding properties of the liquid crystal composition are shown in Table 3 below.
TABLE 3 formulation of example 1 liquid crystal composition and corresponding Properties
/>
Example 2
The formulation and corresponding properties of the liquid crystal composition are shown in Table 4 below.
TABLE 4 formulation and corresponding Properties of example 2 liquid Crystal composition
/>
Example 3
The formulation and corresponding properties of the liquid crystal composition are shown in Table 5 below.
TABLE 5 formulation of example 3 liquid crystal composition and corresponding Properties
/>
Example 4
The formulation and corresponding properties of the liquid crystal composition 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 composition are shown in Table 7 below.
TABLE 7 formulation and corresponding Properties of example 5 liquid Crystal composition
/>
Example 6
The formulation and corresponding properties of the liquid crystal composition are shown in Table 8 below.
TABLE 8 formulation of liquid crystal composition of example 6 and corresponding Properties
/>
Example 7
The formulation and corresponding properties of the liquid crystal composition are shown in Table 9 below.
TABLE 9 formulation of liquid crystal composition of example 7 and corresponding Properties
/>
Example 8
The formulation and corresponding properties of the liquid crystal composition are shown in Table 10 below.
TABLE 10 formulation of liquid Crystal composition of example 8 and corresponding Properties
/>
Comparative example 1
The formulation and corresponding properties of the liquid crystal composition are shown in Table 11 below.
Table 11 formulation and corresponding Properties of comparative example 1 liquid crystal composition
CC-3-2V in example 8 was replaced with CC-3-V, and comparative example 1 was obtained in the same manner as in example 8. Example 8 has a high clearing point, a large dielectric, a higher K value, compared to comparative example 1, and can be used to develop a low cell thickness, fast response, wide temperature display liquid crystal display.
TABLE 12 reliability data for example 1 and comparative example 1
The reliability of the liquid crystal composition is carried out by ultraviolet and high temperature aging tests and VHR tests, and the smaller the VHR data change of the liquid crystal composition before and after the ultraviolet and high temperature tests is, the stronger the ultraviolet and high temperature resistance is. Therefore, the uv resistance and the high temperature resistance were judged by comparing the differences of VHR data before and after the test of each example and comparative example.
First, the VHR data of the liquid crystal composition is measured as initial VHR data before the ultraviolet and high temperature aging test is performed, then the ultraviolet and high temperature aging test is performed on the liquid crystal composition, and the VHR data of the liquid crystal composition is measured again after the test.
Ultraviolet aging test: the liquid crystal composition was irradiated with 5000mJ energy under an ultraviolet lamp having a wavelength of 365 nm.
High temperature aging test: the liquid crystal composition was placed in an oven at 100 ℃ for one hour.
The smaller the change of the VHR data relative to the initial VHR data after the aging test, the stronger the ultraviolet resistance and the high temperature resistance of the liquid crystal composition are, so that the stronger the resistance of the liquid crystal composition to the damage of the external environment in the working process can be judged, and the higher the reliability of the liquid crystal composition is.
As can be seen from table 12, the liquid crystal composition of the present disclosure is very remarkable for improving the UV and high temperature resistance of the liquid crystal material, and the liquid crystal composition of the present disclosure has good UV and high temperature resistance, compared to comparative example 1.
It should be apparent that the foregoing examples of the present disclosure are merely illustrative of the present disclosure and not limiting of the embodiments of the present disclosure, and that various other changes and modifications may be made by one of ordinary skill in the art based on the foregoing description, and it is not intended to be exhaustive of all embodiments, and all obvious changes and modifications that come within the scope of the present disclosure are intended to be embraced by the technical solution of the present disclosure.
Claims (3)
1. A liquid crystal composition comprising a compound represented by formula I, five compounds represented by formula II-3, formula II-5 or formula II-7, two compounds represented by formula III-1, three compounds represented by formula IV-1 or formula IV-3, and a polymerizable compound represented by formula RM-4,
R 1 represents an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, R 2 An alkoxy group having 1 to 5 carbon atoms;
R 3 represents an alkyl group having 1 to 5 carbon atoms, R 4 An alkyl group having 1 to 5 carbon atoms;
R 5 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, R 6 Represents an alkyl group having 1 to 5 carbon atoms.
2. A liquid crystal display element comprising the liquid crystal composition of claim 1, wherein the liquid crystal display element is an active matrix addressed display element or a passive matrix addressed display element.
3. A liquid crystal display comprising the liquid crystal composition of claim 1, wherein the liquid crystal display is an active matrix addressed display or a passive matrix addressed display.
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| CN201910516663.1A CN112080287B (en) | 2019-06-14 | 2019-06-14 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
| TW108129983A TW202108748A (en) | 2019-06-14 | 2019-08-22 | Liquid crystal composition, liquid crystal display element, liquid crystal display having a large elastic coefficient K value, a relatively high liquid crystal clear point (CP), and large dielectric anisotropy |
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| CN108728119A (en) * | 2017-04-20 | 2018-11-02 | 北京八亿时空液晶科技股份有限公司 | A kind of fast-response negative dielectric anisotropy liquid crystal composition and its application |
| CN109593532A (en) * | 2017-09-30 | 2019-04-09 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition |
| CN109652097A (en) * | 2018-05-18 | 2019-04-19 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition and liquid crystal display element, liquid crystal display |
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| CN108728119A (en) * | 2017-04-20 | 2018-11-02 | 北京八亿时空液晶科技股份有限公司 | A kind of fast-response negative dielectric anisotropy liquid crystal composition and its application |
| CN109593532A (en) * | 2017-09-30 | 2019-04-09 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition |
| CN109652097A (en) * | 2018-05-18 | 2019-04-19 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition and liquid crystal display element, liquid crystal display |
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