CN112940743A - 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 PDF

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Publication number
CN112940743A
CN112940743A CN201911322988.2A CN201911322988A CN112940743A CN 112940743 A CN112940743 A CN 112940743A CN 201911322988 A CN201911322988 A CN 201911322988A CN 112940743 A CN112940743 A CN 112940743A
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liquid crystal
formula
crystal composition
mass
compounds
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张倩
王岩
李亚楠
刘露露
乔云霞
徐凯
温刚
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Shijiazhuang Chengzhi Yonghua Display Material Co Ltd
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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

Abstract

Liquid crystal composition, liquid crystal display element, liquid crystal display. The invention discloses a liquid crystal composition, which belongs to the technical field of liquid crystal materials and comprises 30-40% by mass of one or more compounds shown as a formula I, 10-45% by mass of one or more compounds shown as a formula II, 3-20% by mass of one or more compounds shown as a formula III and one or more compounds shown as a formula V, wherein the dielectric anisotropy of the liquid crystal composition is 5.9-8.5. The liquid crystal composition has the characteristic of quick response.

Description

Liquid crystal composition, liquid crystal display element and liquid crystal display
Technical Field
The invention belongs to the technical field of liquid crystal materials, and particularly relates to a liquid crystal composition, a liquid crystal display element containing the liquid crystal composition and a liquid crystal display.
Background
The liquid crystal material is a mixture having both liquid fluidity and crystal anisotropy at a certain temperature. Liquid crystal materials in various phases have been developed for use in liquid crystal display devices depending on the properties of the liquid crystal materials. The display is a process of converting data information using an electrical signal as a propagation medium into visual information using visible light as a propagation medium, and a Man-Machine Interface (MMI) is a device for completing the display. Flat Panel Displays (FPDs) are the most popular type of Display device at present. A Liquid Crystal Display (LCD) is the earliest developed and commercialized product among FPDs. In terms of the operating principle, the LCD device generates light from a backlight source by using a polarizer, liquid crystal molecules of a liquid crystal cell, and the like, and the light and the shade of the light corresponding to an image to be displayed are generated, so that the color is changed, and the image display recognizable by people is realized. That is, the brightness of the LCD depends on the transmittance of the liquid crystal cell, the transmittance through the color filter, the brightness of the backlight, and other factors.
The response speed is an important evaluation index of the liquid crystal display, and if the response speed is too slow, a smear phenomenon occurs on a display picture, so that the liquid crystal display is required to have a fast response speed. In order to increase the response speed of the liquid crystal display, methods of reducing the cell thickness, improving the driving method, providing a high driving voltage, using a liquid crystal composition having a fast response, and the like may be selected. However, no matter what method is adopted, the other performances of the liquid crystal display are weakened. If the driving method is changed, the driving cost of the IC is increased and the circuit is more complicated; the power consumption is increased along with the increase of the driving voltage; the reduction of the box thickness can increase the difficulty of the production process, cause the defects of uneven box thickness and the like, and lead to the reduction of the yield of the liquid crystal display.
The above improvement is initiated from the manufacturing of the lcd panel, and actually, the manufacturers of the lcd panels will prefer to select the liquid crystal material with fast response speed to improve the response speed of the lcd. Therefore, it is an urgent problem to effectively improve the response speed of the liquid crystal composition.
Disclosure of Invention
In order to solve the above technical problems, the present inventors have conducted intensive studies and found that the liquid crystal composition of the present invention has a characteristic of fast response.
The invention also provides a liquid crystal display element or a liquid crystal display containing the liquid crystal composition.
Specifically, the present invention comprises the following:
in a first aspect of the present invention, there is provided a liquid crystal composition having positive dielectric anisotropy, comprising 30 to 40% by mass of one or more compounds represented by formula I, 10 to 45% by mass of one or more compounds represented by formula II, 3 to 20% by mass of one or more compounds represented by formula III, and one or more compounds represented by formula V, wherein the liquid crystal composition has a dielectric anisotropy of 5.9 to 8.5,
Figure BDA0002327655890000021
wherein R is1Represents a linear alkyl group having 2 to 5 carbon atoms or a linear alkenyl group having 2 to 4 carbon atoms; r2Represents a linear alkyl group having 2 to 5 carbon atoms; r3Represents cyclopropylmethyl or cyclopentyl; r4Represents a linear alkyl group or a cyclopentyl group having 3 to 5 carbon atoms, R4Any one or more unconnected-CH in the alkyl group shown2-optionally substituted with cyclopropylene;
Y1、Y2represents H or F;
Figure BDA0002327655890000022
to represent
Figure BDA0002327655890000023
X represents F or OCF3。
In another aspect of the present invention, there is provided a liquid crystal display element or a liquid crystal display comprising the liquid crystal composition of the present invention, the liquid crystal display element or the liquid crystal display being an active matrix display element or a display, a passive matrix display element or a display.
The liquid crystal composition has the characteristic of quick response because the ratio of the elastic constant to the rotational viscosity is small. .
The liquid crystal display element and the liquid crystal display have the characteristic of quick response by comprising the liquid crystal composition.
Detailed Description
[ liquid Crystal composition ]
In order to more clearly illustrate the invention, the invention 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 invention.
The liquid crystal composition with positive dielectric anisotropy comprises 30-40% by mass of one or more compounds shown in a formula I, 10-45% by mass of one or more compounds shown in a formula II, 3-20% by mass of one or more compounds shown in a formula III and one or more compounds shown in a formula V, the liquid crystal composition has the dielectric anisotropy of 5.9-8.5,
Figure BDA0002327655890000031
wherein R is1Represents a linear alkyl group having 2 to 5 carbon atoms or a linear alkenyl group having 2 to 4 carbon atoms; r2Represents a linear alkyl group having 2 to 5 carbon atoms; r3Represents cyclopropylmethyl or cyclopentyl; r4Represents a linear alkyl group or a cyclopentyl group having 3 to 5 carbon atoms, R4Any one or more unconnected-CH in the alkyl group shown2-optionally substituted with cyclopropylene;
Y1、Y2represents H or F;
Figure BDA0002327655890000032
to represent
Figure BDA0002327655890000033
Or
Figure BDA0002327655890000034
X represents F or OCF3。
The liquid crystal composition has the characteristic of quick response because the ratio of the elastic constant to the rotational viscosity is small.
The liquid crystal composition of the present invention, optionally, the compound represented by the aforementioned formula I is selected from the group consisting of compounds represented by formulae I-1 to I-3,
Figure BDA0002327655890000035
the liquid crystal composition of the present invention, optionally, the compound represented by the aforementioned formula II is selected from the group consisting of compounds represented by formulae II-1 to II-10,
Figure BDA0002327655890000036
Figure BDA0002327655890000041
the liquid crystal composition of the invention can be selected from the compounds shown in the formula III, the compounds shown in the formula III-1 or the compounds shown in the formula III-2,
Figure BDA0002327655890000042
Figure BDA0002327655890000051
in the liquid crystal composition of the present invention, optionally, the compound represented by the formula V is selected from the group consisting of compounds represented by the formula V-1 to formula V-5,
Figure BDA0002327655890000052
the liquid crystal composition can be applied to the liquid crystal display fields of notebook computers, desktop displays, tablet computers and the like with IPS-TFT and FFS-TFT display modes.
In the liquid crystal composition, the mass content of the compound shown in the formula I in the liquid crystal composition is preferably 31-40%; the mass content of the compound shown in the formula II in the liquid crystal composition is preferably 10-42%; the mass content of the compound represented by the formula III in the liquid crystal composition is preferably 3-18%.
The liquid crystal composition of the present invention, optionally, further comprises one or more compounds selected from the group consisting of the compounds represented by the formulae IV-1 to IV-6,
Figure BDA0002327655890000061
the compounds shown in the formulas IV-1 to IV-6 have larger dielectric anisotropy and moderate optical anisotropy, and the dielectric anisotropy of the liquid crystal composition can be obviously improved by adding a small amount of the compounds, so that the threshold voltage of the liquid crystal composition is reduced.
The total amount (mass content) of the compound represented by the formula IV-1, IV-2, IV-3, IV-4, IV-5 and/or IV-6 in the liquid crystal composition is not particularly limited, and may be 1 to 20%, preferably 2 to 20%.
The liquid crystal composition of the invention optionally further comprises one or more compounds shown as a formula VI,
Figure BDA0002327655890000062
wherein the content of the first and second substances,
Figure BDA0002327655890000063
to represent
Figure BDA0002327655890000064
The compound shown in the formula VI has larger dielectric anisotropy and larger elastic constant, so that the threshold voltage of the liquid crystal composition is reduced, and the response speed is improved.
The amount (mass content) of the compound represented by the formula VI added to the liquid crystal composition is not particularly limited, and may be 1 to 6%, preferably 5 to 6%.
Optionally, the compound shown in the formula VI is a compound shown in a formula VI-1 or a formula VI-2,
Figure BDA0002327655890000071
the liquid crystal composition of the present invention, optionally, further comprises one or more compounds represented by formula VII,
Figure BDA0002327655890000072
wherein R is5Each independently represents a C1-5 linear alkyl group, a C1-3 linear alkenyl group, R5Any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopropylene; r6Represents a straight-chain alkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 2 carbon atoms; n represents 0 or 1.
Figure BDA0002327655890000073
Each independently represent
Figure BDA0002327655890000074
The amount (mass content) of the compound represented by the formula VII added to the liquid crystal composition is not particularly limited, and may be 1 to 31%, preferably 3 to 31%.
Alternatively, the aforementioned compound represented by the formula VII is selected from the group consisting of compounds represented by the following formulae VII-1 to VII-8,
Figure BDA0002327655890000075
Figure BDA0002327655890000081
wherein, the compound shown in the formula VII-1 has smaller optical anisotropy and lower clearing point, and can be used for reducing the optical anisotropy and the clearing point of the liquid crystal composition; the compounds shown in the formulas VII-2, VII-3 and VII-8 have larger optical anisotropy and larger clearing point, and can quickly improve the optical anisotropy and the clearing point of the liquid crystal composition; the compounds shown in the formulas VII-4 to VII-7 have moderate optical anisotropy and moderate clearing point, and can be used for adjusting the optical anisotropy and the clearing point of the liquid crystal composition.
The liquid crystal composition of the invention optionally further comprises one or more compounds shown as a formula VIII,
Figure BDA0002327655890000082
wherein the content of the first and second substances,
Figure BDA0002327655890000083
to represent
Figure BDA0002327655890000084
The compound shown in the formula VIII has a larger clearing point and a larger elastic constant, and the clearing point and the elastic constant of the liquid crystal composition can be obviously improved by adding a small amount of the compound.
The amount (mass content) of the compound represented by the formula VIII added to the liquid crystal composition is not particularly limited, and may be 1 to 2.5%, preferably 2 to 2.5%.
Optionally, the compound shown in the formula VIII is a compound shown in a formula VIII-1 or a formula VIII-2,
Figure BDA0002327655890000085
optionally, the invention also provides a positive dielectric anisotropy liquid crystal composition, which comprises 30-40% by mass of one or more compounds shown in the formula I-1, the formula I-2 and/or the formula I-3, 30-40% by mass of one or more compounds shown in the formula II, 3-5% by mass of one or more compounds shown in the formula III, 12-16.5% by mass of one or more compounds shown in the formula V, 4-6% by mass of one or more compounds shown in the formula VI, 3-5% by mass of one or more compounds shown in the formula VII and 1-2.5% by mass of one or more compounds shown in the formula VIII.
Optionally, the present specification further provides a positive dielectric anisotropic liquid crystal composition, which comprises 30 to 40% by mass of one or more compounds represented by the formula I-1, and/or the formula I-2, and/or the formula I-3, 20 to 30% by mass of one or more compounds represented by the formula II, 5 to 15% by mass of one or more compounds represented by the formula III, 1 to 5% by mass of one or more compounds represented by the formula IV, 10 to 15% by mass of one or more compounds represented by the formula V, and 10 to 15% by mass of one or more compounds represented by the formula VII.
Optionally, the present specification further provides a positive dielectric anisotropy liquid crystal composition, which comprises 30 to 40% by mass of one or more compounds represented by the formula I-1, and/or the formula I-2, and the formula I-3, 40 to 45% by mass of one or more compounds represented by the formula II, 8 to 12% by mass of one or more compounds represented by the formula III, 3 to 7% by mass of one or more compounds represented by the formula IV, 1 to 6% by mass of one or more compounds represented by the formula V, 2 to 6% by mass of one or more compounds represented by the formula VI, and 3 to 7% by mass of one or more compounds represented by the formula VII.
Optionally, the present specification further provides a positive dielectric anisotropic liquid crystal composition, which comprises 30 to 40% by mass of one or more compounds represented by the formula I-1, and/or the formula I-2, and the formula I-3, 10 to 15% by mass of one or more compounds represented by the formula II, 15 to 20% by mass of one or more compounds represented by the formula III, 2 to 5% by mass of one or more compounds represented by the formula IV, 3 to 7% by mass of one or more compounds represented by the formula V, 25 to 29% by mass of one or more compounds represented by the formula VII, and 0 to 2.5% by mass of one or more compounds represented by the formula VIII.
In the liquid crystal composition of the present invention, a dopant having various functions may be optionally added, and when a dopant is contained, the content of the dopant is preferably 0.01 to 1% by mass in the liquid crystal composition, and examples of the dopant include an antioxidant, a light stabilizer, and a chiral agent.
The antioxidant may be exemplified by the group consisting of,
Figure BDA0002327655890000091
Figure BDA0002327655890000101
t represents an integer of 1 to 10.
Examples of the light stabilizer include,
Figure BDA0002327655890000102
the chiral agent may be, for example,
Figure BDA0002327655890000103
r represents an alkyl group having 1 to 10 carbon atoms.
[ liquid Crystal display element or liquid Crystal display ]
The invention also relates to a liquid crystal display element or a liquid crystal display comprising the liquid crystal composition of the invention, wherein the display element or the display is an active matrix display element or display, a passive matrix display element or display.
Optionally, the liquid crystal display element or the liquid crystal display is in an IPS-TFT or FFS-TFT display mode.
The liquid crystal display element and the liquid crystal display have quick response, wide working temperature range and good high-temperature stability by comprising the liquid crystal composition.
The liquid crystal display element and the liquid crystal display of the present invention are not limited in structure as long as they contain the liquid crystal composition of the present invention, and those skilled in the art can select an appropriate structure of the liquid crystal display element and the liquid crystal display according to the desired performance.
Examples
In order to more clearly illustrate the invention, the invention 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 invention.
In the invention, the preparation method is a conventional method if no special description is provided, the used raw materials can be obtained from a public commercial way if no special description is provided, the percentages refer to mass percentage, the temperature is centigrade (DEG C), the liquid crystal compound also becomes a liquid crystal monomer, 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;
S-N represents the crystalline to nematic melting point (. degree. C.) of the liquid crystal;
Δ n represents optical anisotropy, and Δ n ═ ne-noWherein n isoRefractive index of ordinary light, neThe refractive index of the extraordinary ray is measured under the conditions of 25 +/-2 ℃ and 589nm, and the Abbe refractometer is used for testing;
Δ ε represents dielectric anisotropy, and Δ ε∥-ε⊥Wherein, epsilon∥Is a dielectric constant parallel to the molecular axis,. epsilon⊥Dielectric constant perpendicular to the molecular axis, at 25 + -0.5 deg.C, 20 μm parallel box, INSTEC: ALCT-IR1 test;
γ1expressed as rotational viscosity (mPas) at 25 + -0.5 deg.C, 20 micron parallel boxes, INSTEC: ALCT-IR1 test;
K11is the splay elastic constant, K33For the flexural elastic constant, the test conditions were: 25 plus or minus 2 ℃, INSTEC, ALCT-IR1 and 20 micron parallel boxes;
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 invention 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 BDA0002327655890000111
Figure BDA0002327655890000121
TABLE 2 corresponding codes for end groups and linking groups
Figure BDA0002327655890000122
Figure BDA0002327655890000131
Examples are:
Figure BDA0002327655890000132
the code is CC-3-V;
Figure BDA0002327655890000133
the code is CP-3-O2;
Figure BDA0002327655890000134
the code is PP-5-1;
Figure BDA0002327655890000135
the code is CCP-V-1;
Figure BDA0002327655890000136
the code is CPP-1V-2;
Figure BDA0002327655890000137
the code is PGP-Cpr 1-2;
Figure BDA0002327655890000141
the code is CPPC-3-5;
Figure BDA0002327655890000142
the code is CCU-2-F;
Figure BDA0002327655890000143
the code is CCP-V-OT;
Figure BDA0002327655890000144
the code is CCPU-3-F;
Figure BDA0002327655890000145
the code is CPUP-3-OT;
Figure BDA0002327655890000146
the code is PPGU-Cp-F;
Figure BDA0002327655890000147
the code is DUQU-Cp-F;
Figure BDA0002327655890000148
the code is PGUQU-3-F;
Figure BDA0002327655890000149
the code is CPY-2-O2;
Figure BDA00023276558900001410
the code is CCY-3-O2;
Figure BDA0002327655890000151
the code is COY-3-O2;
Figure BDA0002327655890000152
the code is CCOY-3-O2;
Figure BDA0002327655890000153
the code is Sb-CpO-O4;
Figure BDA0002327655890000154
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 BDA0002327655890000155
Figure BDA0002327655890000161
Example 2:
the formulation and corresponding properties of the liquid crystal compositions are shown in table 4 below.
Table 4: formulation and corresponding Properties of the liquid Crystal composition of example 2
Figure BDA0002327655890000162
Figure BDA0002327655890000171
Example 3:
the formulation and corresponding properties of the liquid crystal compositions are shown in table 5 below.
Table 5: formulation and corresponding Properties of the liquid Crystal composition of example 3
Figure BDA0002327655890000172
Figure BDA0002327655890000181
Example 4:
the formulation and corresponding properties of the liquid crystal compositions are shown in table 6 below.
Table 6: formulation and corresponding Properties of the liquid Crystal composition of example 4
Figure BDA0002327655890000182
Example 5:
the formulation and corresponding properties of the liquid crystal compositions are shown in table 7 below.
Table 7: formulation and corresponding Properties of the liquid Crystal composition of example 5
Figure BDA0002327655890000183
Figure BDA0002327655890000191
Example 6:
the formulation and corresponding properties of the liquid crystal compositions are shown in Table 8 below.
Table 9: formulation and corresponding Properties of the liquid Crystal composition of example 8
Figure BDA0002327655890000192
Figure BDA0002327655890000201
Example 7:
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 7
Figure BDA0002327655890000202
Figure BDA0002327655890000211
Example 8:
the formulation and corresponding properties of the liquid crystal composition are shown in table 10 below.
Table 10: formulation and corresponding Properties of the liquid Crystal composition of example 8
Figure BDA0002327655890000212
Figure BDA0002327655890000221
Comparative example 1:
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 comparative example 1
Figure BDA0002327655890000222
Figure BDA0002327655890000231
Comparative example 2:
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 comparative example 2
Figure BDA0002327655890000232
Figure BDA0002327655890000241
As can be seen from the comparison between examples 1-8 and comparative examples 1-2, the ratio of the rotational viscosity to the elastic constant of the liquid crystal composition provided in examples 1-8 is significantly smaller than that of the liquid crystal composition provided in comparative examples 1-2, so that the response speed of the IPS-TFT/FFS-TFT display mode notebook computer, desktop display and flat panel computer display is greatly improved without changing the thickness design of the device cell.

Claims (9)

1. A liquid crystal composition with positive dielectric anisotropy is characterized by comprising 30-40% by mass of one or more compounds shown in a formula I, 10-45% by mass of one or more compounds shown in a formula II, 3-20% by mass of one or more compounds shown in a formula III and one or more compounds shown in a formula V, wherein the liquid crystal composition has the dielectric anisotropy of 5.9-8.5,
Figure FDA0002327655880000011
wherein R is1Represents a linear alkyl group having 2 to 5 carbon atoms or a linear alkenyl group having 2 to 4 carbon atoms; r2Represents a linear alkyl group having 2 to 5 carbon atoms; r3Represents cyclopropylmethyl or cyclopentyl; r4Represents a linear alkyl group or a cyclopentyl group having 3 to 5 carbon atoms, R4Any one or more unconnected-CH in the alkyl group shown2-optionally substituted with cyclopropylene;
Y1、Y2represents H or F;
Figure FDA0002327655880000012
to represent
Figure FDA0002327655880000013
X represents F or OCF3。
2. The liquid crystal composition of claim 1, wherein the compound of formula I is selected from the group consisting of compounds of formulae I-1 to I-3,
Figure FDA0002327655880000014
3. the liquid crystal composition of claim 1, wherein the compound of formula II is selected from the group consisting of compounds of formulae II-1 to II-10,
Figure FDA0002327655880000015
Figure FDA0002327655880000021
4. the liquid crystal composition of claim 1, wherein the compound of formula III is a compound of formula III-1 or formula III-2,
Figure FDA0002327655880000022
5. the liquid crystal composition according to any one of claims 1 to 4, further comprising one or more compounds selected from the group consisting of compounds represented by formulae IV-1 to IV-6,
Figure FDA0002327655880000031
6. the liquid crystal composition according to any one of claims 1 to 5, further comprising one or two compounds represented by formula VI,
Figure FDA0002327655880000032
wherein the content of the first and second substances,
Figure FDA0002327655880000033
to represent
Figure FDA0002327655880000034
7. The liquid crystal composition according to any one of claims 1 to 6, further comprising one or more compounds represented by the formula VII,
Figure FDA0002327655880000041
wherein R is5Represents a C1-5 linear alkyl group, a C1-3 linear alkenyl group, R5Any one or more of the radicals indicated being unconnected-CH2-optionally substituted with cyclopropylene; r6Represents a straight-chain alkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 2 carbon atoms; n represents 0 or 1.
Figure FDA0002327655880000042
Each independently represent
Figure FDA0002327655880000043
8. The liquid crystal composition according to any one of claims 1 to 7, further comprising one or two compounds represented by formula VIII,
Figure FDA0002327655880000044
wherein the content of the first and second substances,
Figure FDA0002327655880000045
to represent
Figure FDA0002327655880000046
9. A liquid crystal display element or a liquid crystal display comprising the liquid crystal composition according to any one of claims 1 to 8, wherein: the display element or display is an active matrix display element or display, a passive matrix display element or display.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103351871A (en) * 2013-07-09 2013-10-16 石家庄诚志永华显示材料有限公司 Liquid crystal medium suitable for TFT liquid crystal displays
CN108690638A (en) * 2017-04-06 2018-10-23 石家庄诚志永华显示材料有限公司 Liquid-crystal composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103351871A (en) * 2013-07-09 2013-10-16 石家庄诚志永华显示材料有限公司 Liquid crystal medium suitable for TFT liquid crystal displays
CN108690638A (en) * 2017-04-06 2018-10-23 石家庄诚志永华显示材料有限公司 Liquid-crystal composition

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Application publication date: 20210611