CN112940752A - Liquid crystal composition, liquid crystal display element or liquid crystal display - Google Patents

Liquid crystal composition, liquid crystal display element or liquid crystal display Download PDF

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CN112940752A
CN112940752A CN201911403126.2A CN201911403126A CN112940752A CN 112940752 A CN112940752 A CN 112940752A CN 201911403126 A CN201911403126 A CN 201911403126A CN 112940752 A CN112940752 A CN 112940752A
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carbon atoms
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CN112940752B (en
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邢文晓
康素敏
崔青
温刚
高红茹
李吉凯
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Shijiazhuang Chengzhi Yonghua Display Material Co Ltd
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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
    • 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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Abstract

The invention discloses a negative dielectric anisotropy liquid crystal composition with an IPS or FFS display mode, a liquid crystal display element and a liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition disclosed by the invention comprises 27-35% by mass of a compound shown as a formula I, 10-16% by mass of one or more compounds shown as a formula II and 5-18% by mass of one or more compounds shown as a formula III, wherein the 5-18% by mass of one or more compounds shown as the formula III at least comprises one compound shown as a formula III-1, 17-23% by mass of more compounds shown as a formula IV, 4-15% by mass of one or more compounds shown as a formula V and 2.5-8% by mass of one or more compounds shown as a formula VI, and has a low rotational viscosity gamma1Elastic constant K ratio and higherOptical anisotropy Δ n.

Description

Liquid crystal composition, liquid crystal display element or liquid crystal display
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
Currently, in the liquid crystal display market, the display modes with competitiveness mainly include in-plane switching, IPS, fringe-field switching, FFS, and vertical alignment, VA. Among these display modes, IPS and FFS are most characterized by having both electrodes on the same plane, unlike the vertically aligned VA display mode in which the electrodes are arranged in a three-dimensional manner on both the top and bottom. The liquid crystal display panel has a unique molecular level conversion structure, the visible angle of 178 degrees can be achieved up and down and left and right, the color expressive force at any angle is not lost and is not discounted, the limit of liquid crystal display is almost achieved, and the visual dead angle is basically eliminated. When the positive liquid crystal is used in an IPS/FFS display mode, a fast response can be obtained and good reliability is obtained; while negative liquid crystals can achieve higher transmittance when used in the IPS/FFS display mode. Therefore, more and more portable small and medium sized display screens adopt the IPS/FFS display mode.
With the technology updating speed of the LCD products becoming faster and faster, the requirement on the response speed of the LCD products becoming higher and higher, on one hand, the device manufacturers increase the response speed by decreasing the cell thickness d, which requires that the refractive index Δ n of the liquid crystal be increased to match the lower cell thickness, and on the other hand, the response speed of the liquid crystal material also needs to be increased. The response speed of the prior art liquid crystal material is limited by the rotational viscosity gamma of the liquid crystal1Elastic constant K, it is therefore desirable to reduce the rotational viscosity γ of the liquid-crystalline medium1Meanwhile, the elastic constant K is increased to accelerate the response time. In practical studies, it is found that the rotational viscosity and the elastic constant are a pair of contradictory parameters, and the reduction of the rotational viscosity and the reduction of the elastic constant cannot achieve the goal of reducing the response time.
Therefore, high optical anisotropy Δ n and low γ were developed1/K11(the response speed of the IPS/FFS mode liquid crystal is mainly determined by the elastic constant K11Has a large influence) can effectively improve the response speed of LCD products.
Disclosure of Invention
The present inventors have conducted intensive studies in order to solve the problems of the prior art, and surprisingly found that the response speed of a liquid crystal composition can be improved by using the liquid crystal composition of the present disclosure, thereby completing the present disclosure.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
a negative dielectric anisotropy liquid crystal composition with IPS or FFS display mode for a liquid crystal display element or a liquid crystal display device has a dielectric anisotropy value of-3.8 to-5.0, and comprises 27 to 35 mass percent of a compound shown in a formula I, 10 to 16 mass percent of one or more compounds shown in a formula II, 5 to 18 mass percent of one or more compounds shown in a formula III at least comprise 17 to 23 mass percent of two or more compounds shown in a formula IV, 4 to 15 mass percent of one or more compounds shown in a formula V and 2.5 to 8 mass percent of one or more compounds shown in a formula VI,
Figure BDA0002347950920000021
wherein R is1～R10Independently 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, wherein any one or more of them is-CH2-Optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
The liquid crystal composition of the present disclosure has a low rotational viscosity gamma1The ratio of the elastic constant K and the higher optical anisotropy Deltan.
The present disclosure also provides a display element having a display mode of IPS/FFS liquid crystal comprising the liquid crystal composition of the present disclosure, the liquid crystal display element being an active matrix addressing display element.
The present disclosure also provides a liquid crystal display having a display mode of IPS/FFS liquid crystal comprising the liquid crystal composition of the present disclosure, the liquid crystal display being an active matrix addressed display.
The liquid crystal composition provided by the disclosure solves the problem of low response speed of the liquid crystal composition in the current negative IPS/FFS mode.
Detailed Description
[ liquid Crystal composition ]
A negative dielectric anisotropy liquid crystal composition used for a liquid crystal display element or a liquid crystal display device and having an IPS or FFS display mode, wherein the dielectric anisotropy value is between-3.8 and-5.0, the negative dielectric anisotropy liquid crystal composition comprises 27 to 35 mass percent of a compound shown in a formula I, 10 to 16 mass percent of one or more compounds shown in a formula II, 5 to 18 mass percent of one or more compounds shown in a formula III, and the 5 to 18 mass percent of one or more compounds shown in the formula III at least comprises one compound shown in a formula III-1, 17 to 23 mass percent of two or more compounds shown in a formula IV, 4 to 15 mass percent of one or more compounds shown in a formula V and 2.5 to 8 mass percent of one or more compounds shown in a formula VI:
Figure BDA0002347950920000031
wherein R is1～R10Independently 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, wherein any one or more of them are not mutually exclusivelinked-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
The liquid crystal composition of the present disclosure has a low rotational viscosity gamma1The ratio of the elastic constant K and the higher optical anisotropy Deltan.
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 a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, an isobutoxy group, a pentyloxy group, a hexyloxy group, a heptyloxy group, an octyloxy group, a nonyloxy group, and a decyloxy group.
Examples of the alkenyl group having 2 to 10 carbon atoms include a vinyl group, a 1-propenyl group, a 1-butenyl group, a 2-butenyl group, a 3-butenyl group, a 1-pentenyl group, a 2-pentenyl group, a 3-pentenyl group, a 4-pentenyl group, a 1-hexenyl group, a 2-hexenyl group, and a 3-hexenyl group.
The "fluoro-substituted" 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, and fluoro-substituted alkenyloxy group having 3 to 8 carbon atoms may be a monofluoro-substituted, or a polyfluoro-substituted, such as a difluoro-substituted, trifluoro-substituted, or a perfluoro-substituted group, 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, difluoromethyl, trifluoromethyl, 1-fluoroethyl, 2-fluoroethyl, 1, 2-difluoroethyl, 1,1, 2-trifluoroethyl, and 1,1,1,2, 2-pentafluoro-substituted ethyl.
The liquid crystal composition preferably comprises 27-35% of a compound shown in a formula I, one or more compounds shown in formulas II-1 to II-3 with the total mass content of 10-16%, one or more compounds shown in formulas III-1 to III-4 with the total mass content of 5-18%, the one or more compounds shown in the formulas III-1 to III-4 with the total mass content of 5-18% at least comprise one compound shown in the formula III-1, more than two compounds shown in the formulas IV-1 to IV-6 with the total mass content of 17-23%, one or more compounds shown in the formulas V-1 to V-5 with the total mass content of 4-15%, and one or more compounds shown in the formulas VI-1 and VI-2 with the total mass content of 2.5-8%:
Figure BDA0002347950920000041
Figure BDA0002347950920000051
Figure BDA0002347950920000061
in the liquid crystal composition of the present disclosure, preferably, one or more compounds represented by formula vii:
Figure BDA0002347950920000062
wherein R is11、R12Independently 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, wherein any one or more of them is-CH2-Optionally substituted with cyclopentylene, cyclobutyl, or cyclopropylene;
Z1represents a single bond, -CH2CH2-or-CH2O-；
Figure BDA0002347950920000063
Represents 1, 4-cyclohexylene or 1, 4-cyclohexenylene;
m represents 0 or 1;
when m represents 0, Z1represents-CH2O-；
When m represents 1, Z1When the compound represents a single bond, the compound is,
Figure BDA0002347950920000064
represents a 1, 4-cyclohexenylene group.
The aforementioned compound represented by the formula VII has negative dielectric anisotropy, and the driving voltage of the liquid crystal composition can be adjusted by containing the compound represented by the formula VII 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 VII is selected from the group consisting of compounds represented by the following formulae VII-1 to VII-3:
Figure BDA0002347950920000071
wherein R is111、R121Each 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, wherein any one or more of these groups are independently-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 viii other than the compounds represented by formula i:
Figure BDA0002347950920000072
wherein R is13、R14Each independently representAn 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;
Figure BDA0002347950920000073
each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.
By containing the compound represented by the formula VIII in the liquid crystal composition, the mutual solubility 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 compound represented by the aforementioned formula viii is selected from the group consisting of the following compounds represented by formulae viii-1 to viii-3 in addition to the compound represented by the formula i:
Figure BDA0002347950920000074
Figure BDA0002347950920000081
wherein R is13、R14Each 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 ix:
Figure BDA0002347950920000082
wherein R is15、R16Each 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;
Figure BDA0002347950920000083
each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.
By including the compound represented by formula IX in the liquid crystal composition of the present disclosure, it is advantageous to raise the phase transition temperature of the liquid crystal composition and to adjust the operating temperature range of the liquid crystal composition.
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the foregoing formula IX is selected from the group consisting of the following compounds represented by the formulae IX-1 to IX-3:
Figure BDA0002347950920000084
wherein R is15、R16Each 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.
In the liquid crystal composition of the present disclosure, preferably, one or more compounds represented by formula x are further included:
Figure BDA0002347950920000085
wherein R is17Represents 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, wherein any one or more of-CH groups are not linked2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
R18represents 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.
In the liquid crystal composition of the present disclosure, preferably, the compound represented by the aforementioned formula X is selected from the group consisting of compounds represented by the following formulae X-1 to X-12:
Figure BDA0002347950920000091
Figure BDA0002347950920000101
wherein R is171、R181Represents an alkyl group having 1 to 10 carbon atoms.
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,
Figure BDA0002347950920000102
t represents an integer of 1 to 10;
the chiral agent may be, for example,
Figure BDA0002347950920000103
R0represents an alkyl group having 1 to 10 carbon atoms;
examples of the light stabilizer include,
Figure BDA0002347950920000104
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,
Figure BDA0002347950920000111
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.
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 comprising the compound or the liquid crystal composition has higher 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, noFor ordinary lightRefractive index, 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 vertical cell, INSTEC: ALCT-IR1 test;
γ1expressed as rotational viscosity (mPas) at 25 + -0.5 deg.C, 20 micron vertical cell, INSTEC: ALCT-IR1 test;
K11is a torsional elastic constant, K33For the splay spring constant, the test conditions were: at 25 ℃, INSTEC is ALCT-IR1 and a 20-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
Figure BDA0002347950920000121
TABLE 2 corresponding codes for end groups and linking groups
Figure BDA0002347950920000122
Figure BDA0002347950920000131
Examples are:
Figure BDA0002347950920000132
the code is CC-Cp-V1;
Figure BDA0002347950920000133
the code is CPY-2-O2;
Figure BDA0002347950920000134
the code is CCY-3-O2;
Figure BDA0002347950920000135
the code is COY-3-O2;
Figure BDA0002347950920000136
the code is CCOY-3-O2;
Figure BDA0002347950920000137
the code is Sb-CpO-O4;
Figure BDA0002347950920000138
the code is Sc-CpO-O4.
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
Figure BDA0002347950920000141
Comparative example 1
The formulation and corresponding properties of the liquid crystal compositions are shown in table 4 below.
TABLE 4 formulation and corresponding Properties of the comparative example 1 liquid Crystal composition
Figure BDA0002347950920000142
Figure BDA0002347950920000151
The same as in example 1 except that CY-3-O2, CY-5-O2 and CCY-4-O2 in example 1 were replaced with CY-3-2 and CCY-4-2 was used as comparative example 1. The liquid crystal composition of example 1 of the present disclosure has a larger optical anisotropy value Δ n, and can be matched with a relatively lower cell thickness, γ, than that of comparative example 11/K11Lower and faster response, and can be used for developing a liquid crystal display with fast response.
Example 2
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 2
Figure BDA0002347950920000152
Figure BDA0002347950920000161
Example 3
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 3
Figure BDA0002347950920000162
Figure BDA0002347950920000171
Example 4
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 4
Figure BDA0002347950920000172
Figure BDA0002347950920000181
Example 5
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 8 below.
TABLE 8 formulation and corresponding Properties of the liquid crystal composition of example 5
Figure BDA0002347950920000182
Figure BDA0002347950920000191
Example 6
The formulation and corresponding properties of the liquid crystal compositions are shown in table 9 below.
TABLE 9 formulation and corresponding Properties of the liquid crystal composition of example 6
Figure BDA0002347950920000192
Figure BDA0002347950920000201
Comparative example 2
The formulation and corresponding properties of the liquid crystal composition are shown in table 10 below.
TABLE 10 formulation and corresponding Properties of the comparative example 2 liquid Crystal composition
Figure BDA0002347950920000202
When PY-3-O2, PY-1V-O2, PY-2O-O2 and PPY-5-O2 in example 6 were replaced with COY-3-O2 and CCOY-2-O2, the ratio of addition of COY-3-O2 and CCOY-2-O2 was relatively decreased and the corresponding neutral macromolecule was increased in order to maintain the same dielectric anisotropy value Δ ε, and the remainder was the same as in example 6 and used as comparative example 2. The liquid crystal composition of example 6 had a larger optical anisotropy value Δ n, γ, than that of comparative example 21/K11Lower and faster response, and can be used for developing a liquid crystal display with fast response.
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
Figure BDA0002347950920000211
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
Figure BDA0002347950920000221
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
Figure BDA0002347950920000222
Figure BDA0002347950920000231
Example 10
The formulation and corresponding properties of the liquid crystal compositions are shown in Table 14 below.
TABLE 14 formulation and corresponding Properties of the liquid crystal composition of example 9
Figure BDA0002347950920000232
Figure BDA0002347950920000241
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 negative dielectric anisotropy liquid crystal composition for a liquid crystal display element or a liquid crystal display device having an IPS or FFS display mode, having a dielectric anisotropy value of from-3.8 to-5.0, comprising: the compound represented by the formula I with the mass content of 27-35%, the compound represented by the formula II with the total mass content of 10-16%, the compound represented by the formula III with the total mass content of 5-18%, and the compound represented by the formula III with the total mass content of 5-18% at least comprises one compound represented by the formula III-1, more than two compounds represented by the formula IV with the total mass content of 17-23%, one or more compounds represented by the formula V with the total mass content of 4-15%, and one or more compounds represented by the formula VI with the total mass content of 2.5-8%:
Figure FDA0002347950910000011
wherein R is1～R10Independently 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, wherein any one or more of them is-CH2-Optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
2. The liquid crystal composition of claim 1, further comprising one or more compounds of formula vii:
Figure FDA0002347950910000021
wherein R is11、R12Independently 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, wherein any one or more of them is-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
Z1represents a single bond, -CH2CH2-or-CH2O-；
Figure FDA0002347950910000022
Represents 1, 4-cyclohexylene or 1, 4-cyclohexenylene;
m represents 0 or 1;
when m represents 0, Z1represents-CH2O-；
When m represents 1, Z1When the compound represents a single bond, the compound is,
Figure FDA0002347950910000023
represents a 1, 4-cyclohexenylene group.
3. The liquid crystal composition of claim 2, wherein the compound of formula vii is selected from the group consisting of compounds of formulae vii-1 to vii-3:
Figure FDA0002347950910000024
wherein R is111、R121Each 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, wherein any one or more of these groups are independently-CH2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene.
4. The liquid crystal composition of claim 1, further comprising one or more compounds of formula viii other than said compound of formula i:
Figure FDA0002347950910000031
wherein R is13、R14Each independently representAn 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;
Figure FDA0002347950910000032
each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.
5. The liquid crystal composition of claim 4, wherein the compound of formula VIII other than the compound of formula I is selected from the group consisting of compounds of formulae VIII-1 to VIII-3:
Figure FDA0002347950910000033
wherein R is13、R14Each 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 of claim 1, further comprising one or more compounds of formula ix:
Figure FDA0002347950910000034
wherein R is15、R16Each 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, or a chain having 2 to 10 carbon atomsAn alkenyl group or a fluorine-substituted alkenyl group having 2 to 10 carbon atoms;
Figure FDA0002347950910000035
each independently represents 1, 4-cyclohexylene, 1, 4-cyclohexenylene or 1, 4-phenylene.
7. The liquid crystal composition of claim 6, wherein the compound of formula ix is selected from the group consisting of compounds of formulae ix-1 to ix-3:
Figure FDA0002347950910000036
wherein R is15、R16Each 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 claim 1, further comprising one or more compounds of formula X:
Figure FDA0002347950910000041
wherein R is17Represents 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, wherein any one or more of-CH groups are not linked2-optionally substituted with cyclopentylene, cyclobutyl or cyclopropylene;
R18represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atomsAn alkoxy group or a fluorine-substituted alkoxy group having 1 to 10 carbon atoms;
x represents O or S.
9. A liquid crystal composition according to claim 8, wherein said compound of formula X is selected from the group consisting of compounds of formulae X-1 to X-12:
Figure FDA0002347950910000042
Figure FDA0002347950910000051
wherein R is171、R181Represents 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.
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CN113403088A (en) * 2021-06-17 2021-09-17 烟台显华化工科技有限公司 Negative dielectric anisotropy liquid crystal composition and liquid crystal display device
CN113801663A (en) * 2020-06-16 2021-12-17 石家庄诚志永华显示材料有限公司 Negative liquid crystal composition, liquid crystal display element and liquid crystal display
CN115785970A (en) * 2022-11-24 2023-03-14 Tcl华星光电技术有限公司 Liquid crystal composition and liquid crystal display panel

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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

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Publication number Priority date Publication date Assignee Title
CN113801663A (en) * 2020-06-16 2021-12-17 石家庄诚志永华显示材料有限公司 Negative liquid crystal composition, liquid crystal display element and liquid crystal display
CN113403088A (en) * 2021-06-17 2021-09-17 烟台显华化工科技有限公司 Negative dielectric anisotropy liquid crystal composition and liquid crystal display device
CN115785970A (en) * 2022-11-24 2023-03-14 Tcl华星光电技术有限公司 Liquid crystal composition and liquid crystal display panel

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