CN107760317B - Liquid crystal composition containing cyclohexenyl liquid crystal compound and application thereof - Google Patents

Liquid crystal composition containing cyclohexenyl liquid crystal compound and application thereof Download PDF

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CN107760317B
CN107760317B CN201610704351.XA CN201610704351A CN107760317B CN 107760317 B CN107760317 B CN 107760317B CN 201610704351 A CN201610704351 A CN 201610704351A CN 107760317 B CN107760317 B CN 107760317B
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liquid crystal
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compound represented
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CN107760317A (en
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陈卯先
王杰
储士红
田会强
未欣
陈海光
姜天孟
郭云鹏
袁瑾
伍嘉琦
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Beijing Bayi Space LCD Technology 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
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • 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
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • C09K19/0403—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems
    • C09K2019/0407—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems containing a carbocyclic ring, e.g. dicyano-benzene, chlorofluoro-benzene or cyclohexanone
    • 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
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13712—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy

Abstract

The invention relates to the technical field of liquid crystal, in particular to a liquid crystal composition containing cyclohexenyl liquid crystal compounds, which comprises one or more compounds represented by a general formula I and one or more compounds represented by a general formula II; wherein, the compound of the general formula I is a compound with a cyclohexene structure, and the compound has large negative dielectric anisotropy; the compound of the general formula II is a compound with a two-ring structure, and the structure has low rotational viscosity, so that the rotational viscosity of the liquid crystal composition can be effectively reduced, and the response time of a liquid crystal display is prolonged. The liquid crystal composition has low rotational viscosity, can be used for fast response liquid crystal display of various display modes, and can obviously improve the display effect of a liquid crystal display when being used in VA mode displays such as VA, MVA, PVA and PSVA, or IPS and FFS mode displays.

Description

Liquid crystal composition containing cyclohexenyl liquid crystal compound and application thereof
Technical Field
The invention relates to the technical field of liquid crystal, in particular to a liquid crystal composition containing a cyclohexenyl liquid crystal compound and application thereof, and specifically the liquid crystal composition provided by the invention has negative dielectric anisotropy.
Background
At present, Liquid crystals are widely used in the field of information display, and at the same time, the application in optical communication has been advanced to some extent (s.t.wu, d.k.yang.reflective Liquid Crystal display y.wiley, 2001). In recent years, the application fields of liquid crystal compounds have been remarkably widened to various display devices, electro-optical devices, electronic components, sensors, and the like, and nematic liquid crystal compounds have been most widely used in flat panel displays, particularly in systems of TFT active matrix.
At present, the negative liquid crystal is widely used in a large-size liquid crystal display for a television, and particularly, the appearance of the PSVA technology makes the negative liquid crystal more popular; in recent years, a negative liquid crystal FFS display is widely used for a display of a mobile device such as a mobile phone, and because of its high transmittance, it can greatly reduce energy consumed by a backlight of the liquid crystal display, improve display quality of the liquid crystal display, and prolong a cruising time of the mobile device.
Negative liquid crystals, which were proposed at the beginning of the 80's last century, are mainly used in VA mode, and have major advantages in high contrast and major disadvantages in small viewing angle and slow response time. With the development of display technology, MVA, PVA, PSVA, and the like technologies have appeared in succession, solving the problems of response time and viewing angle. In recent years, as touch screens become mainstream in the market of mobile devices, IPS and FFS type hard screen displays have inherent advantages, and both IPS and FFS type displays can use positive liquid crystals and negative liquid crystals, and the positive liquid crystals are aligned along the direction of electric field lines due to a bending electric field existing in the type of displays, thereby causing molecules to bend, so that transmittance is reduced; the negative liquid crystal is arranged perpendicular to the direction of the electric field lines, so that the transmittance is greatly improved, and the method is the best method for improving the transmittance and reducing the backlight power consumption at present. However, the response time problem of negative liquid crystals is a significant problem that is currently encountered, and FFS displays using negative liquid crystals have a response time that is 50% or more slower than FFS displays using positive liquid crystals. Therefore, how to increase the response time of the negative liquid crystal is a key issue at present.
In particular, the response time of a liquid crystal display depends on
Figure BDA0001086760420000011
(d is the thickness of the liquid crystal layer, γ 1 is the rotational viscosity of the liquid crystal, and Keff is the effective elastic constant), therefore, the purpose of improving the response time can be achieved by reducing the rotational viscosity, reducing the thickness of the liquid crystal layer, and increasing the elastic constant, and the thickness of the liquid crystal layer depends on the design of the liquid crystal display; for liquid crystal compositions, it is most effective to reduce the rotational viscosity and the liquid crystal thickness.
Disclosure of Invention
The invention aims to provide a liquid crystal composition containing a cyclohexenyl liquid crystal compound, which has low rotational viscosity and can effectively reduce the response time of a liquid crystal display.
In order to achieve the above objects, the present invention adopts the following technical scheme, wherein the liquid crystal composition containing cyclohexenyl liquid crystal compound comprises one or more compounds represented by the general formula I:
Figure BDA0001086760420000012
one or more of the compounds represented by formula II:
Figure BDA0001086760420000013
wherein R is1、R2Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the1Represents trans-1, 4-cyclohexyl or 1, 4-phenylene, n1、n2Each independently represents 0 or 1;
R3、R4each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the2Represents trans-1, 4-cyclohexyl or 1, 4-phenylene.
Wherein, the compound represented by the general formula I is a compound with a cyclohexene structure, and the compound has large negative dielectric anisotropy.
Specifically, the compound represented by the general formula I is selected from one or more of the formulas IA to ID:
Figure BDA0001086760420000021
wherein R is1Represents C2～C7A linear alkyl or linear alkenyl group of (a); r2Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
Preferably, the compound represented by formula I is selected from one or more of formulae IA1 to ID 36:
Figure BDA0001086760420000022
Figure BDA0001086760420000031
Figure BDA0001086760420000041
Figure BDA0001086760420000051
preferably, the compound of formula I provided by the present invention is selected from one or more of formulae IA20, IA22, IA32, IB13, IB14, IB19, IB20, IB21, IB22, IB26, IB32, IC13, IC14, IC19, IC20, IC21, IC26, IC32, ID13, ID14, ID19, ID20, ID26, ID 32.
In the liquid crystal composition, the amount of the compound of the general formula I is 1-85%, preferably 20-40%, or 50-80%, or 15-50%, or 10-20%.
The compound of the general formula II provided by the invention is a compound with a two-ring structure, and the structure has low rotational viscosity, so that the rotational viscosity of the liquid crystal composition can be effectively reduced, and the response time of a liquid crystal display is prolonged.
Specifically, the compound of the general formula II is selected from one or more of the following formulas IIA to IIB:
Figure BDA0001086760420000052
wherein R is3Represents C1～C7Straight chain alkyl or C2～C7A linear alkenyl group of (a); r4Represents C1～C7Linear alkyl, linear alkoxy or C2～C7Linear alkenyl groups of (a).
Preferably, the compounds of formula II provided by the present invention are selected from one or more of formulae IIA1 to IIB 16:
Figure BDA0001086760420000053
Figure BDA0001086760420000061
Figure BDA0001086760420000071
more preferably, the compound of formula II provided by the present invention is selected from one or more of formulae IIA2, IIA6, IIA14, IIA18, IIA20, IIA22, IIA26, IIA27, IIA32, IIB10, IIB 14.
In the liquid crystal composition, the compound of the general formula II is used in an amount of 1-75%, preferably 10-40%, or 20-70%, or 25-40%, or 10-55%, or 30-55%, 50-70%.
Preferably, the liquid crystal composition provided by the present invention further comprises one or more compounds represented by formula III:
Figure BDA0001086760420000072
wherein R is5、R6Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); n is3Is 0 or 1.
The compound represented by the general formula III is a liquid crystal compound containing a methoxy bridge bond and a2, 3-difluoro-1, 4-phenyl structure, and the compound has larger negative dielectric anisotropy.
In particular, the compound of formula III is selected from one or more of formulae IIIA to IIIB:
Figure BDA0001086760420000073
wherein R is5Represents C2～C7A linear alkyl or linear alkenyl group of (a); r6Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
More preferably, the compound of formula III is selected from one or more of formulae IIIA1 to IIIB 36:
Figure BDA0001086760420000074
Figure BDA0001086760420000081
Figure BDA0001086760420000091
more preferably, the compound represented by the general formula III is selected from one or more of IIIA14, IIIA17, IIIA19, IIIA20, IIIA21, IIIA22, IIIA23, IIIA26, IIIA32, IIIB13, IIIB14, IIIB15, IIIB16, IIIB17, IIIB18, IIIB19, IIIB20, IIIB21, IIIB22, IIIB23, IIIB24, IIIB29, IIIB 35.
In the liquid crystal composition, the compound of the general formula III is used in an amount of 0 to 70%, preferably 0 to 40%, or 0 to 15%, 10 to 60%, or 15 to 40%, or 10 to 55%.
Preferably, the liquid crystal composition provided by the invention further comprises one or more compounds represented by the general formula IV:
Figure BDA0001086760420000092
wherein R is7、R8Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the4Represents trans-1, 4-cyclohexyl or 1, 4-phenylene.
The compound of the general formula IV provided by the invention is a neutral compound with a tricyclic structure, and the structure has lower rotational viscosity and higher clearing point.
Specifically, the compound represented by the general formula IV provided by the invention is selected from one or more of the formulas IVA to IVB:
Figure BDA0001086760420000093
wherein R is7Represents C2～C7Linear alkyl or linear alkenyl of R8Represents C1～C7Linear alkyl or linear alkenyl of (1).
Preferably, the compound of formula IV is selected from one or more of IVA 1-IVB 20:
Figure BDA0001086760420000094
Figure BDA0001086760420000101
more preferably, the compound of formula IV is selected from one or more of formulae IVA2, IVA6, IVA10, IVA13, IVA16, IVB2, IVB6, IVB8, IVB15, IVB 17.
In the liquid crystal composition, the compound of formula IV is used in an amount of 0-50%, preferably 0-40%, or 0-30%, or 0-15%, or 10-30%, or 15-60%, or 4-25%, or 3-13%.
Preferably, the liquid crystal composition provided by the present invention further comprises one or more compounds represented by formula V:
Figure BDA0001086760420000102
wherein R is9、R10Each independently represent F, C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is1、L2、L3Each independently represents H or F, L1And L3Not simultaneously F.
The compound represented by the general formula V is selected from one or more of the formulas VA to VB:
Figure BDA0001086760420000103
wherein R is9、R10Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
Preferably, the compound represented by formula V is selected from one or more of formulae VA1 to VB 6:
Figure BDA0001086760420000104
Figure BDA0001086760420000111
preferably, the compound represented by formula V is selected from one or more of formulae VA2, VA3, VA4, VA6, VA8, VA17, VA18, VA19, VA22, VA23, VA24, VB2, VB 4.
In the liquid crystal composition, the compound of formula V is used in an amount of 0-40%, preferably 0-25%, or 0-20%, or 0-15%, or 4-15%, or 5-21%, or 4-14%.
The liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 1-85% of a compound represented by the general formula I;
(2) 1-75% of a compound represented by the general formula II;
(3) 0 to 70% of a compound represented by the general formula III;
(4) 0 to 50% of a compound represented by the general formula IV;
(5) 0-40% of a compound represented by the general formula V.
Specifically, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-85% of a compound represented by the general formula I;
(2) 5-55% of a compound represented by the general formula II;
(3) 0 to 40% of a compound represented by the general formula IV;
(4) 0 to 25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-85% of a compound represented by the general formula I;
(2) 10-55% of a compound represented by the general formula II;
(3) 0 to 35% of a compound represented by the general formula IV;
(4) 0 to 20% of a compound represented by the general formula V.
More preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-81% of a compound represented by the general formula I;
(2) 13 to 50% of a compound represented by the general formula II;
(3) 0 to 30% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-85% of a compound represented by the general formula I;
(2) 10-40% of a compound represented by the general formula II;
(3) 0 to 15% of a compound represented by the general formula IV;
(4) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-81% of a compound represented by the general formula I;
(2) 13-36% of a compound represented by the general formula II;
(3) 0 to 5% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-65% of a compound represented by the general formula I;
(2) 20-55% of a compound represented by the general formula II;
(3) 0 to 35% of a compound represented by the general formula IV;
(4) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-65% of a compound represented by the general formula I;
(2) 25-50% of a compound represented by the general formula II;
(3) 0 to 30% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-75% of a compound represented by the general formula I;
(2) 30-55% of a compound represented by the general formula II;
(3) 0 to 35% of a compound represented by the general formula IV;
(4) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-70% of a compound represented by the general formula I;
(2) 30-50% of a compound represented by the general formula II;
(3) 0 to 30% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 45-85% of a compound represented by the general formula I;
(2) 10-35% of a compound represented by the general formula II;
(3) 0 to 10% of a compound represented by the general formula IV;
(4) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-81% of a compound represented by the general formula I;
(2) 13-35% of a compound represented by the general formula II;
(3) 0 to 5% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 45-85% of a compound represented by the general formula I;
(2) 10-40% of a compound represented by the general formula II;
(3) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-81% of a compound represented by the general formula I;
(2) 13-36% of a compound represented by the general formula II;
(3) 0-15% of a compound represented by the general formula V.
Further preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-81% of a compound represented by the general formula I;
(2) 13-32% of a compound represented by the general formula II;
(3) and 4-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 64-81% of a compound represented by the general formula I;
(2) 19 to 36% of a compound represented by the general formula II;
or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-65% of a compound represented by the general formula I;
(2) 20-55% of a compound represented by the general formula II;
(3) 1-35% of a compound represented by the general formula IV;
(4) 0-15% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-62% of a compound represented by the general formula I;
(2) 25-50% of a compound represented by the general formula II;
(3) 5-30% of a compound represented by the general formula IV;
(4) 0-8% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 50-85% of a compound represented by the general formula I;
(2) 10-35% of a compound represented by the general formula II;
(3) 0 to 10% of a compound represented by the general formula IV;
(4) and 1-20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 53-81% of a compound represented by the general formula I;
(2) 13-32% of a compound represented by the general formula II;
(3) 0 to 5% of a compound represented by the general formula IV;
(4) and 4-15% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-85% of a compound represented by the general formula I;
(2) 15-55% of a compound represented by the general formula II;
(3) and 0-35% of a compound represented by the general formula IV.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-81% of a compound represented by the general formula I;
(2) 19 to 50% of a compound represented by the general formula II;
(3) 0 to 30% of a compound represented by the general formula IV.
Further preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 20-40% of a compound represented by the general formula I;
(2) 45-55% of a compound represented by the general formula II;
(3) 10-30% of a compound represented by the general formula IV.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 1-55% of a compound represented by the general formula I;
(2) 10-70% of a compound represented by the general formula II;
(3) 1 to 65% of a compound represented by the general formula III;
(4) 0 to 35% of a compound represented by the general formula IV;
(5) 0 to 30% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-50% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 1-60% of a compound represented by the general formula III;
(4) 0 to 30% of a compound represented by the general formula IV;
(5) 0 to 25% of a compound represented by the general formula V.
More preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-47% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 3-57% of a compound represented by the general formula III;
(4) 0 to 27% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-20% of a compound represented by the general formula I;
(2) 20-70% of a compound represented by the general formula II;
(3) 3-60% of a compound represented by the general formula III;
(4) 0 to 35% of a compound represented by the general formula IV;
(5) 0 to 27% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-20% of a compound represented by the general formula I;
(2) 24-66% of a compound represented by the general formula II;
(3) 5-56% of a compound represented by the general formula III;
(4) 0 to 27% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-26% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 2-60% of a compound represented by the general formula III;
(4) 0 to 15% of a compound represented by the general formula IV;
(5) 0 to 25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 15-26% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 3-57% of a compound represented by the general formula III;
(4) 0-13% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 21-50% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 2-60% of a compound represented by the general formula III;
(4) 0 to 15% of a compound represented by the general formula IV;
(5) 0-15% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 21-47% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 3-57% of a compound represented by the general formula III;
(4) 0-13% of a compound represented by the general formula IV;
(5) 0-13% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-50% of a compound represented by the general formula I;
(2) 15-36% of a compound represented by the general formula II;
(3) 13-60% of a compound represented by the general formula III;
(4) 0 to 15% of a compound represented by the general formula IV;
(5) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-47% of a compound represented by the general formula I;
(2) 19 to 36% of a compound represented by the general formula II;
(3) 17-57% of a compound represented by the general formula III;
(4) 0-13% of a compound represented by the general formula IV;
(5) 0 to 14% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-50% of a compound represented by the general formula I;
(2) 30-45% of a compound represented by the general formula II;
(3) 10-55% of a compound represented by the general formula III;
(4) 0 to 25% of a compound represented by the general formula IV;
(5) 0 to 25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-47% of a compound represented by the general formula I;
(2) 30-45% of a compound represented by the general formula II;
(3) 11-53% of a compound represented by the general formula III;
(4) 0 to 23% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-45% of a compound represented by the general formula I;
(2) 36-70% of a compound represented by the general formula II;
(3) 2-50% of a compound represented by the general formula III;
(4) 0 to 30% of a compound represented by the general formula IV;
(5) 0 to 25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-47% of a compound represented by the general formula I;
(2) 36-66% of a compound represented by the general formula II;
(3) 3-48% of a compound represented by the general formula III;
(4) 0 to 27% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-47% of a compound represented by the general formula I;
(2) 36-66% of a compound represented by the general formula II;
(3) 3-48% of a compound represented by the general formula III;
(4) 0 to 27% of a compound represented by the general formula IV;
(5) 0 to 21% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-50% of a compound represented by the general formula I;
(2) 20-70% of a compound represented by the general formula II;
(3) 5-55% of a compound represented by the general formula III;
(4) 1-30% of a compound represented by the general formula IV;
(5) 0 to 20% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-46% of a compound represented by the general formula I;
(2) 27 to 66% of a compound represented by the general formula II;
(3) 10-52% of a compound represented by the general formula III;
(4) 3-27% of a compound represented by the general formula IV;
(5) 0 to 14% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-50% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 2-60% of a compound represented by the general formula III;
(4) 0 to 25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-47% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 3-57% of a compound represented by the general formula III;
(4) 0 to 21% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-22% of a compound represented by the general formula I;
(2) 27 to 57% of a compound represented by the general formula II;
(3) 3-52% of a compound represented by the general formula III;
(4) and 5-21% of a compound represented by the general formula V.
Most preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 16-34% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 14-57% of a compound represented by the general formula III.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 3-50% of a compound represented by the general formula I;
(2) 20-70% of a compound represented by the general formula II;
(3) 2-55% of a compound represented by the general formula III;
(4) 0 to 15% of a compound represented by the general formula IV;
(5) and 1-25% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-43% of a compound represented by the general formula I;
(2) 27 to 66% of a compound represented by the general formula II;
(3) 3-52% of a compound represented by the general formula III;
(4) 0-13% of a compound represented by the general formula IV;
(5) and 4-21% of a compound represented by the general formula V.
Further preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-21% of a compound represented by the general formula I;
(2) 27 to 39% of a compound represented by the general formula II;
(3) 17 to 37% of a compound represented by the general formula III;
(4) 3-13% of a compound represented by the general formula IV;
(5) and 4-14% of a compound represented by the general formula V.
Or, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 5-50% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 5-60% of a compound represented by the general formula III;
(4) 0 to 30% of a compound represented by the general formula IV.
Preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-47% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 10-57% of a compound represented by the general formula III;
(4) and 0-27% of a compound represented by the general formula IV.
Further preferably, the liquid crystal composition provided by the invention comprises the following compounds in percentage by weight:
(1) 10-46% of a compound represented by the general formula I;
(2) 29-66% of a compound represented by the general formula II;
(3) 10-57% of a compound represented by the general formula III;
(4) and 4-23% of a compound represented by the general formula IV.
The method for producing the liquid crystal composition of the present invention is not particularly limited, and it can be produced by mixing two or more compounds by a conventional method, such as a method of mixing the different components at a high temperature and dissolving each other, wherein the liquid crystal composition is dissolved and mixed in a solvent for the compounds, and then the solvent is distilled off under reduced pressure; alternatively, the liquid crystal composition of the present invention can be prepared by a conventional method, for example, by dissolving the component having a smaller content in the main component having a larger content at a higher temperature, or by dissolving each of the components in an organic solvent, for example, acetone, chloroform or methanol, and then mixing the solutions to remove the solvent.
The liquid crystal composition has low rotational viscosity, can be used for fast response liquid crystal display of various display modes, and can obviously improve the display effect of a liquid crystal display when being used in VA mode displays such as VA, MVA, PVA and PSVA, or IPS and FFS mode displays.
Preferably, the liquid crystal composition provided by the present invention further comprises one or more polymerizable compounds represented by general formula VI:
Figure BDA0001086760420000171
m represents 0 or 1; SP1、SP2Each independently represents a polymerizable group, L4Represents H or F, L5Representative H, F, C1～C5Linear alkyl or linear alkoxy of (a);
preferably, the polymerizable compound represented by formula VI is selected from one or more of formulas VIA to VIF:
Figure BDA0001086760420000181
wherein, SP1、SP2Each independently represents an acrylate group, a methacrylate group, a butenoate group or C2～C8Linear alkenyl groups of (a).
More preferably, the polymerizable compound represented by formula VI is selected from one or more of the formulae VIA 1-VIF 3:
Figure BDA0001086760420000182
Figure BDA0001086760420000191
more preferably, the compound represented by formula VI is selected from one or more of formulas VIA2, VIB2, VIC2, VID2, VIE2, VIF 2.
The amount of the polymerizable compound with the general formula VI is 0.1-5% of the weight of the liquid crystal composition; the preferable dosage is 0.2-1.0% of the weight of other liquid crystal compounds in the liquid crystal composition; more preferably, the amount of the liquid crystal compound is 0.3 to 0.5 percent of the weight of other liquid crystal compounds in the liquid crystal composition; the liquid crystal composition containing the polymerizable compound provided by the invention is used for a PSVA liquid crystal display.
The preparation method of the liquid crystal composition containing the polymerizable compound provided by the invention comprises the steps of pouring the liquid crystal composition containing the polymerizable compound into a liquid crystal screen, irradiating and polymerizing through UV light, and continuously applying voltage in the irradiation process. The polymerizable compounds in the liquid crystal composition polymerize under the irradiation of UV light, and a network-like structure is generated.
The liquid-crystalline compounds according to the invention are known products, commercially available or available from the billions of space-time liquid crystal technologies, ltd, or prepared according to the methods disclosed in the literature.
On the basis of the common knowledge in the field, the above preferred conditions can be combined with each other to obtain the preferred embodiments of the invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Unless otherwise indicated, percentages in the present invention are weight percentages; the temperature units are centigrade; Δ n represents optical anisotropy (25 ℃);∥and⊥respectively represent the parallel and perpendicular dielectric constants (25 ℃, 1000 Hz); Δ represents the dielectric anisotropy (25 ℃, 1000 Hz); γ 1 represents rotational viscosity (mpa.y, 25 ℃); cp represents the clearing point (. degree. C.) of the liquid crystal composition; k11、K22、K33Respectively representing the splay, twist and bend elastic constants (pN, 25 ℃).
In the following examples, the group structures in the liquid crystal compounds are represented by codes shown in Table 1.
Table 1: radical structure code of liquid crystal compound
Figure BDA0001086760420000201
Take the following compound structure as an example:
Figure BDA0001086760420000202
expressed as: 3YPWO4
Figure BDA0001086760420000203
Expressed as: 3CC1OWO2
In the following examples, the liquid crystal composition was prepared by a thermal dissolution method, comprising the steps of: weighing the liquid crystal compound by a balance according to the weight percentage, wherein the weighing and adding sequence has no specific requirements, generally weighing and mixing the liquid crystal compound in sequence from high melting point to low melting point, heating and stirring at 60-100 ℃ to uniformly melt all the components, filtering, performing rotary evaporation, and finally packaging to obtain the target sample.
In the following examples, the weight percentages of the components in the liquid crystal composition and the performance parameters of the liquid crystal composition are shown in the following tables.
Example 1
Table 2: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000211
Example 2
Table 3: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000212
Example 3
Table 4: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000213
Figure BDA0001086760420000221
Example 4
Table 5: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000222
Example 5
Table 6: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000223
Example 6
Table 7: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000224
Figure BDA0001086760420000231
Example 7
Table 8: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000232
Example 8
Table 9: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000233
Example 9
Table 10: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000234
Figure BDA0001086760420000241
Example 10
Table 11: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000242
Example 11
Table 12: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000243
Example 12
Table 13: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000244
Figure BDA0001086760420000251
Example 13
Table 14: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000252
Example 14
Table 15: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000253
Example 15
Table 16: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000254
Figure BDA0001086760420000261
Example 16
Table 17: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000262
Example 17
Table 18: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000263
Example 18
Table 19: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000264
Figure BDA0001086760420000271
Example 19
Table 20: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000272
Example 20
Table 21: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000273
Example 21
Table 22: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000274
Figure BDA0001086760420000281
Example 22
Table 23: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000282
Example 23
Table 24: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000283
Example 24
Table 25: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000284
Figure BDA0001086760420000291
Example 25
Table 26: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000292
Example 26
Table 27: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000293
Example 27
Table 28: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000294
Figure BDA0001086760420000301
Example 28
Table 29: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000302
Example 29
Table 30: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000303
Example 30
Table 31: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000304
Figure BDA0001086760420000311
Example 31
Table 32: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000312
Example 32
Table 33: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000313
Example 33
Table 34: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000314
Figure BDA0001086760420000321
Example 34
Table 35: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000322
Example 35
Table 36: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000323
Example 36
Table 37: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000324
Figure BDA0001086760420000331
Example 37
Table 38: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000332
Example 38
Table 39: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000333
Example 39
Table 40: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000341
Example 40
Table 41: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000342
EXAMPLE 41
Table 42: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000343
Example 42
Table 43: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000344
Figure BDA0001086760420000351
Example 43
Table 44: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000352
Example 44
Table 45: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000353
Example 45
Table 46: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000354
Figure BDA0001086760420000361
Example 46
Table 47: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000362
Example 47
Table 48: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000363
Example 48
Table 49: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000371
Example 49
Table 50: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000372
Example 50
Table 51: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000373
Example 51
Table 52: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000374
Figure BDA0001086760420000381
Example 52
Table 53: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000382
Example 53
Table 54: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000383
Example 54
Table 55: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000391
Example 55
Table 56: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000392
Example 56
Table 57: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000393
Example 57
Table 58: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000394
Figure BDA0001086760420000401
Example 58
Table 59: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000402
Example 59
Table 60: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000403
Example 60
Table 61: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000404
Figure BDA0001086760420000411
Example 61
Table 62: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000412
Example 62
Table 63: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000413
Example 63
Table 64: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000414
Figure BDA0001086760420000421
Comparative example 1
Table 65: the weight percentage and performance parameters of each component in the liquid crystal composition
Figure BDA0001086760420000422
The liquid crystal compositions obtained in example 1, example 21 and comparative example 1 were compared in summary, see table 66.
Table 66: comparison of Performance parameters of liquid Crystal compositions
△n △ε Cp γ1 K11 K22 K33
Example 1 0.108 -3.8 90 83 14.8 7.4 16.3
Example 21 0.110 -3.8 90 80 14.9 7.5 16.3
Comparative example 1 0.108 -3.8 90 96 14.7 7.4 16.5
By comparison, it can be seen that: example 1 provides a liquid crystal composition having a low rotational viscosity, i.e., having a faster response time, compared to comparative example 1.
Example 64
99.7% of the nematic liquid crystal composition (N1) provided in example 1, and 0.3% of the polymerizable compound VIA2 were mixed by mass percentage to prepare a liquid crystal mixture for PSVA (PA1), and the nematic liquid crystal composition N1 and the PSVA mixture PA1 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in table 67:
table 67: threshold voltage and response time test results
Figure BDA0001086760420000423
Figure BDA0001086760420000431
Compared with the corresponding liquid crystal composition, the liquid crystal composition with the polymerizable compound has the advantages that the threshold voltage is reduced after polymerization, the response time is accelerated, and the response time of the liquid crystal display is obviously prolonged.
Example 65
99.7% of the nematic liquid crystal composition (N24) provided in example 24, and 0.3% of the polymerizable compound VIA2 were mixed by mass percentage to prepare a liquid crystal mixture for PSVA (PA24), and the nematic liquid crystal composition N24 and the PSVA mixture PA24 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in Table 68:
table 68: threshold voltage and response time test results
Item titl(°) V10(V) T(ms)
N24 89.3 2.54 14.2
PA24 82.1 2.16 4.9
Compared with the corresponding liquid crystal composition, the liquid crystal composition with the polymerizable compound has the advantages that the threshold voltage is reduced after polymerization, the response time is accelerated, and the response time of the liquid crystal display is obviously prolonged.
Example 66
99.6% of the nematic liquid crystal composition (N48) provided in example 48, and 0.4% of the polymerizable compound VIB2 were mixed by mass percentage to prepare a liquid crystal mixture for PSVA (PB48), and the nematic liquid crystal composition N48 and the PSVA mixture PB48 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in Table 69:
table 69: threshold voltage and response time test results
Item titl(°) V10(V) T(ms)
N48 89.8 2.31 16.2
PB48 81.6 1.92 6.2
Example 67
99.5% of the nematic liquid crystal composition (N61) provided in example 61, and 0.5% of the polymerizable compound VID2 were mixed by mass percentage to prepare a liquid crystal mixture for PSVA (PD61), and the nematic liquid crystal composition N61 and the PSVA mixture PD61 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in table 70:
table 70: threshold voltage and response time test results
Item titl(°) V10(V) T(ms)
N61 89.7 2.39 15.6
PD61 81.1 2.03 5.8
Example 68
99.6% of the nematic liquid crystal composition (N62) provided in example 62, and 0.4% of the polymerizable compound VIC2 were mixed by mass% to prepare a liquid crystal mixture for PSVA (PC62), and the nematic liquid crystal composition N62 and the PSVA mixture PC62 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in Table 71:
table 71: threshold voltage and response time test results
Item titl(°) V10(V) T(ms)
N62 89.4 2.38 15.4
PC62 81.0 2.03 5.7
Example 69
99.7% of the nematic liquid crystal composition (N63) provided in example 63, and 0.3% of the polymerizable compound VIF2 were mixed by mass percentage to prepare a liquid crystal mixture for PSVA (PF63), and the nematic liquid crystal composition N63 and the PSVA mixture PF63 were charged into a standard VA test cell, irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and tested for pretilt angle, threshold voltage, and response time, respectively. The test results are shown in table 72:
table 72: threshold voltage and response time test results
Item titl(°) V10(V) T(ms)
N63 89.4 2.46 15.0
PF63 81.4 2.15 5.2
As can be seen from tables 67 to 72, the liquid crystal compositions having the polymerizable compounds have a reduced threshold voltage after polymerization, faster response time, and significantly improved response time of the liquid crystal display, as compared with the corresponding liquid crystal compositions.
The liquid crystal composition provided by the invention is mixed with a polymerizable compound and then used for a PSVA liquid crystal display, so that the response time of the liquid crystal display can be effectively prolonged, and the display effect of the liquid crystal display is obviously improved.
The negative dielectric anisotropy liquid crystal composition provided by the invention has low rotational viscosity, high resistivity and excellent light stability and thermal stability, is suitable for VA type liquid crystal displays such as VA, MVA, PVA and PSVA, or IPS and FFS type liquid crystal displays, and can effectively improve the response time of the liquid crystal display.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (15)

1. A liquid crystal composition comprising a cyclohexenyl liquid crystal compound, characterized in that: the liquid crystal composition is composed of the following compounds in percentage by weight:
(1) 60-68% of a compound represented by the general formula I;
(2) 28-32% of a compound represented by the general formula II;
(3) 4-9% of a compound represented by the general formula V;
Figure FDA0002733129720000011
wherein R is1、R2Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the1Represents trans-1, 4-cyclohexyl or 1, 4-phenylene, n1、n2Each independently represents 0 or 1;
R3、R4each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); a. the2Represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
R9、R10each independently represent F, C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is1、L2、L3Each independently represents H or F, L1And L3Not simultaneously F.
2. The liquid crystal composition according to claim 1, wherein: the compound represented by the general formula I is selected from one or more of formula IA to formula ID:
Figure FDA0002733129720000012
wherein R is1Represents C2～C7A linear alkyl or linear alkenyl group of (a); r2Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
3. The liquid crystal composition according to claim 2, characterized in that: the compound represented by the general formula I is selected from one or more of formulas IA 1-ID 36:
Figure FDA0002733129720000013
Figure FDA0002733129720000021
Figure FDA0002733129720000031
Figure FDA0002733129720000041
4. the liquid crystal composition according to any one of claims 1 to 3, wherein: the compound represented by the general formula II is selected from one or more of the following formulas IIA to IIB:
Figure FDA0002733129720000051
wherein R is3Represents C1～C7Straight chain alkyl or C2～C7A linear alkenyl group of (a); r4Represents C1～C7Linear alkyl, linear alkoxy or C2～C7Linear alkenyl groups of (a).
5. The liquid crystal composition according to claim 4, wherein: the compound of the general formula II is selected from one or more of the following formulas IIA 1-IIB 16:
Figure FDA0002733129720000052
Figure FDA0002733129720000061
6. the liquid crystal composition according to claim 1, wherein: the compound represented by the general formula V is selected from one or more of the formulas VA to VB:
Figure FDA0002733129720000062
wherein R is9、R10Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
7. The liquid crystal composition according to claim 6, wherein: the compound represented by the general formula V is selected from one or more of formulas VA 1-VB 6:
Figure FDA0002733129720000063
Figure FDA0002733129720000071
8. the liquid crystal composition according to claim 1, wherein: further comprising one or more polymerizable compounds represented by the general formula VI:
Figure FDA0002733129720000072
wherein m represents 0 or 1; SP1、SP2Each independently represents a polymerizable group, L4Represents H or F, L5Representative H, F, C1～C5Linear alkyl or linear alkoxy groups of (1).
9. The liquid crystal composition according to claim 8, wherein: the polymerizable compound represented by formula VI is selected from one or more of formulae VIA to VIF:
Figure FDA0002733129720000073
wherein, SP1、SP2Each independently represents an acrylate group, a methacrylate group, a butenoate group or C2～C8Linear alkenyl groups of (a).
10. The liquid crystal composition according to claim 9, characterized in that: the polymerizable compound represented by the general formula VI is selected from one or more of the formulas VIA 1-VIF 3:
Figure FDA0002733129720000074
Figure FDA0002733129720000081
11. the liquid crystal composition according to any one of claims 8 to 10, wherein: the amount of the polymerizable compound in the general formula VI is 0.1-5% of the weight of the liquid crystal composition.
12. The liquid crystal composition according to claim 11, characterized in that: the amount of the polymerizable compound in the general formula VI is 0.2-1.0% of the weight of the liquid crystal composition.
13. The liquid crystal composition according to claim 12, wherein: the amount of the polymerizable compound in the general formula VI is 0.3-0.5% of the weight of the liquid crystal composition.
14. Use of a liquid crystal composition according to any of claims 1 to 7 in a VA, IPS or FFS mode display or of a liquid crystal composition according to any of claims 8 to 13 in a PSVA display.
15. The use according to claim 14, wherein said VA mode display is selected from one of VA, MVA, PVA, PSVA.
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