CN107619668B - Liquid crystal composition containing polyfluorobiphenyl liquid crystal compound and application thereof - Google Patents
Liquid crystal composition containing polyfluorobiphenyl liquid crystal compound and application thereof Download PDFInfo
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Abstract
The invention relates to a liquid crystal composition containing a polyfluorobiphenyl liquid crystal compound, which comprises at least one compound represented by a general formula I, at least one compound represented by a general formula II and at least one compound represented by a general formula III; wherein, the compound represented by the general formula I has a polyfluoro-substituted tricyclic biphenyl structure and has large negative dielectric anisotropy; the compound in the general formula II is a compound with a two-ring structure, has low rotational viscosity, can effectively reduce the rotational viscosity of the liquid crystal composition, and improves the response time of a liquid crystal display; 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 has large negative dielectric anisotropy. 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
Technical Field
The invention relates to a liquid crystal composition, in particular to a liquid crystal composition which has negative dielectric anisotropy; more specifically, the liquid crystal composition provided by the invention at least comprises a liquid crystal compound containing trifluorobiphenyl.
Background
Liquid crystals are currently widely used in the field of information display, and have been used in optical communications (s.t.wu, d.k.yang.reflective Liquid Crystal display. 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 panels 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 the bending electric field existing in the displays, thereby causing bending of molecules and lowering of transmittance; 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.
Specifically, the response time of the LCD depends on (gamma 1d ^2)/Keff (d is the thickness of the liquid crystal layer, gamma 1 is the liquid crystal rotational viscosity, and Keff is the effective elastic constant), therefore, the purposes of improving the response time can be achieved by reducing the rotational viscosity, reducing the thickness of the liquid crystal layer and improving the elastic constant, and the thickness of the liquid crystal layer depends on the design of the LCD; for liquid crystal compositions, it is most effective to reduce the rotational viscosity and the liquid crystal thickness.
At present, there is a need to develop a liquid crystal composition having a low rotational viscosity that can effectively reduce the response time of a liquid crystal display.
Disclosure of Invention
The invention provides a liquid crystal composition containing a polyfluorobiphenyl liquid crystal compound, which comprises at least one compound represented by a general formula I, at least one compound represented by a general formula II and at least one compound represented by a general formula III.
The compound represented by the general formula I has a polyfluoro-substituted tricyclic biphenyl structure, and the compound has large negative dielectric anisotropy. In the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula I in the composition is preferably 1-45%, more preferably 3-35%, 5-30%, 3-16%, 5-16%, 16-35%, 16-30%, 3-30%, 5-26%, 5-35%, 10-30%, 5-30%, 10-26%, 10-35%, 14-30% or 10-24%. The general formula I is specifically as follows:
in the general formula I, R1、R2Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is1Represents H or F; z1Represents a single bond, CH2O or CH2CH2(ii) a Ring A1Represents trans-1, 4-cyclohexyl or 1, 4-cyclohexene.
Preferably, the compound represented by formula I is selected from one or more of formula IA through formula IF:
in IA to IF, R1Represents C2～C7A linear alkyl or linear alkenyl group of (a); r2Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
More preferably, the compound represented by formula I is selected from one or more of formulae IA1 to IF 36:
further preferably, the compound of formula I is one or more of formulae IA13, IA14, IA15, IA16, IA19, IA20, IA21, IA22, IA25, IA26, IA31, IA32, IB14, IB19, IB20, IB26, IB32, IC14, IC19, IC20, IC26, IC32, ID14, ID20, IE13, IE14, IE19, IE20, IF14, IF 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. In the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula II in the composition is preferably 1-75%, more preferably 10-70%, 19-66%, 25-70%, 27-66%, 15-70%, 33-66%, 15-34%, 19-34%, 31-66%, 15-54%, 19-49%, 20-70%, 27-66%, 27-60%, 25-60% or 32-55%. The general formula II is specifically:
in the general formula II, R3、R4Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); ring A2Ring A3Each independently represents trans-1, 4-cyclohexyl or 1, 4-phenylene.
Preferably, the compound of formula II is selected from one or more of formulae IIA to IIC:
in the IIA to IIC, R3Represents 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).
More preferably, the compound of formula II is selected from one or more of formula IIA1 to formula IIC 24:
further preferably, the compound of formula II is selected from one or more of formulae IIA2, IIA6, IIA14, IIA18, IIA22, IIA23, IIA28, IIB10, IIB14, IIC2, IIC4, IIC15, IIC 20.
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 the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula III in the composition is preferably 1-70%, more preferably 3-60%, 5-57%, 5-55%, 10-52%, 3-55%, 5-50%, 20-60%, 25-57%, 3-34%, 5-34%, 35-60%, 35-57%, 3-57%, 5-52%, 3-60%, 5-60%, 10-57%, 3-50%, 5-45%, 3-45%, 5-39%, 10-60% or 14-57%. The general formula III is specifically:
in the general formula III, R5、R6Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); n is 0 or 1.
Preferably, the compound of formula III is selected from one or more of formulae IIIA to IIIB:
in IIIA-IIIB, R5Represents 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 IIIE 36:
further 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.
The liquid crystal compound provided by the invention can also comprise one or more compounds shown in the general formula IV. The compound of the general formula IV is a tricyclic neutral compound, and the structure has lower rotational viscosity and higher clearing point. In the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula IV in the composition is preferably 0-50%, more preferably 0-40%, 0-35%, 0-30%, 0-20%, 0-16%, 0-15%, 0-11% or 0-10%, and further preferably 1-35%, 3-30% or 5-30%. The general formula IV is specifically:
in the general formula IV, R7、R8Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); ring A5Represents trans-1, 4-cyclohexyl or 1, 4-phenylene.
Preferably, the compound represented by formula IV is selected from one or more of formulae IVA to IVB:
in the above-mentioned IVA to IVB, R7Represents C2～C7Linear alkyl or linear alkenyl of R8Represents C1～C7Linear alkyl or linear alkenyl of (1).
More preferably, the compound of formula IV is selected from one or more of IVA 1-IVB 24:
further 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.
The liquid crystal composition provided by the invention can also comprise one or more compounds represented by the general formula V. The compound represented by the general formula V is a terphenyl compound containing a2, 3-difluorobenzene structure, and the compound has large optical anisotropy and large negative dielectric anisotropy. In the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula V in the composition is preferably 0-30%, more preferably 0-15%, 0-12%, 0-10% or 0-9%, and further preferably 1-15% or 4-12%. The general formula V is specifically:
in the general formula V, R9、R10Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is2Represents H or F.
Preferably, the compound of formula V is selected from one or more of VA and VB:
in VA and VB, R9Represents C2～C7A linear alkyl or linear alkenyl group of (a); r10Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
More preferably, the compound represented by formula V is selected from one or more of formulae VA1 to formula VB 24:
further preferably, the compound represented by formula V is selected from one or more of formulae VA2, VA9, VA10, VA14, VA16, VA22, VB9, VB10, VB14, VB 22.
The liquid crystal composition provided by the invention can also comprise one or more compounds represented by the general formula VI. In the liquid crystal composition provided by the invention, the sum of all liquid crystal components is 100%; the content of the compound of the general formula VI in the composition is preferably 0-40%, more preferably 0-30%, 0-25%, 0-23%, 0-20%, 0-15%, 0-14%, 0-11%, 0-10%, and further preferably 1-25% or 7-23%. The general formula VI is in particular:
in the general formula VI, R11、R12Each independently represent F, C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is3、L4、L5Each independently represents H or F.
Preferably, the compound represented by formula VI is selected from one or more of formula VIA to formula VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
More preferably, the compound represented by formula VI is selected from one or more of the formulae VIA 1-VIC 6:
further preferably, the compound represented by formula VI is selected from one or more of formulae VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8, and VIC 2.
In order to enable the liquid crystal composition to meet different requirements, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 1-45% of a compound represented by the general formula I;
(2) 1-75% of a compound represented by the general formula II;
(3) 1 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 to 30% of a compound represented by the general formula V;
(6) 0-40% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-35% of a compound represented by the general formula I;
(2) 10-70% of a compound represented by the general formula II;
(3) 3-60% of a compound represented by the general formula III;
(4) 0 to 40% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% 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 12% of a compound represented by the general formula V;
(6) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-16% of a compound represented by the general formula I;
(2) 25-70% of a compound represented by the general formula II;
(3) 5-55% of a compound represented by the general formula III;
(4) 0 to 40% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-16% 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) 0 to 30% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 16-35% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 3-60% of a compound represented by the general formula III;
(4) 0 to 20% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 16-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-30% of a compound represented by the general formula I;
(2) 33-70% of a compound represented by the general formula II;
(3) 3-55% 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 15% of a compound represented by the general formula V;
(6) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-26% of a compound represented by the general formula I;
(2) 33-66% of a compound represented by the general formula II;
(3) 5 to 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 10% of a compound represented by the general formula V;
(6) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-35% of a compound represented by the general formula I;
(2) 15-34% of a compound represented by the general formula II;
(3) 20-60% of a compound represented by the general formula III;
(4) 0 to 20% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 20% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 10-30% of a compound represented by the general formula I;
(2) 19 to 34% of a compound represented by the general formula II;
(3) 25-57% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 14% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 25-70% of a compound represented by the general formula II;
(3) 3-34% 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 15% of a compound represented by the general formula V;
(6) 0 to 25% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 10-26% of a compound represented by the general formula I;
(2) 31-66% of a compound represented by the general formula II;
(3) 5-34% 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 9% of a compound represented by the general formula V;
(6) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-35% of a compound represented by the general formula I;
(2) 15-54% of a compound represented by the general formula II;
(3) 35-60% of a compound represented by the general formula III;
(4) 0 to 20% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 20% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 19-49% of a compound represented by the general formula II;
(3) 35-57% of a compound represented by the general formula III;
(4) 0 to 11% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 10% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-30% of a compound represented by the general formula I;
(2) 20-70% of a compound represented by the general formula II;
(3) 3-57% of a compound represented by the general formula III;
(4) 1-35% of a compound represented by the general formula IV;
(5) 0 to 15% of a compound represented by the general formula V;
(6) 0 to 20% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-26% of a compound represented by the general formula I;
(2) 27 to 66% of a compound represented by the general formula II;
(3) 5-52% of a compound represented by the general formula III;
(4) 3-30% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0-15% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-35% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 3-60% of a compound represented by the general formula III;
(4) 0 to 15% of a compound represented by the general formula V;
(5) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 10-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% of a compound represented by the general formula III;
(4) 0 to 10% of a compound represented by the general formula V;
(5) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-35% 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 35% of a compound represented by the general formula IV;
(5) 0 to 30% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% 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) 0 to 30% of a compound represented by the general formula IV;
(5) and 0-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-30% of a compound represented by the general formula I;
(2) 20-70% of a compound represented by the general formula II;
(3) 3 to 50% of a compound represented by the general formula III;
(4) 0 to 20% of a compound represented by the general formula IV;
(5) 1-15% of a compound represented by the general formula V;
(6) 0-15% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-26% of a compound represented by the general formula I;
(2) 27 to 60% of a compound represented by the general formula II;
(3) 5-45% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 4-12% of a compound represented by the general formula V;
(6) 0-11% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-30% of a compound represented by the general formula I;
(2) 25-60% of a compound represented by the general formula II;
(3) 3-45% 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 15% of a compound represented by the general formula V;
(6) and 1-25% of a compound represented by the general formula VI.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-26% of a compound represented by the general formula I;
(2) 32-55% of a compound represented by the general formula II;
(3) 5-39% of a compound represented by the general formula III;
(4) 0 to 10% of a compound represented by the general formula IV;
(5) 0 to 9% of a compound represented by the general formula V;
(6) and 7-23% of a compound represented by the general formula VI.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 3-35% of a compound represented by the general formula I;
(2) 15-70% 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) 0-15% of a compound represented by the general formula V.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% of a compound represented by the general formula III;
(4) 0 to 30% of a compound represented by the general formula IV;
(5) 0-12% of a compound represented by the general formula V.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 10-35% of a compound represented by the general formula I;
(2) 15-70% of a compound represented by the general formula II;
(3) 10-60% of a compound represented by the general formula III.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 14-30% 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.
Preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 25-70% of a compound represented by the general formula II;
(3) 5-55% of a compound represented by the general formula III;
(4) and 3-35% of a compound represented by the general formula IV.
More preferably, the liquid crystal composition provided by the invention comprises the following components in percentage by mass:
(1) 10-24% 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) and 5-30% 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.
The liquid crystal composition provided by the invention can further comprise one or more polymerizable compounds shown as a general formula VII. The general formula VII is specifically as follows:
in the general formula VII, m represents 0 or 1; SP1、SP2Each independently represents a polymerizable group; l is6Represents H or F; l is7Representative H, F, C1～C5Linear alkyl or linear alkoxy groups of (1).
Preferably, the polymerizable compound represented by formula VII is selected from one or more of formulas VIIA to VIIF:
among the VIIA to VIIF, SP1、SP2Each independently represents an acrylate group, a methacrylate group, a butenoate group or a linear alkenyl group of C2-C8.
More preferably, the polymerizable compound represented by formula VII is selected from one or more of the large groups represented by formulas VIIA1 to VIIF 3:
further preferably, the polymerizable compound represented by general formula VII is selected from one or more of formulas VIIA2, VIIB2, VIIC2, VIID2, VIIE2, VIIF 2.
The amount of the polymerizable compound with the general formula VII is 0.1-5% of the total weight of other liquid crystal compounds in 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 is 0.3 to 0.5% by weight of the 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.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the present invention, the percentages are by weight, the temperatures are given in degrees Celsius, △ n represents the optical anisotropy (25 ℃), ε∥And ε⊥Respectively representing the parallel and perpendicular dielectric constants (25 ℃, 1000Hz), △ epsilon representing the dielectric anisotropy (25 ℃, 1000Hz), gamma 1 representing the rotational viscosity (mPa. s, 25 ℃), Cp representing 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
Take the following compound structure as an example:
expressed as: 3CGIWO4
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
Example 2
Table 3: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 3
Table 4: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 4
Table 5: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 5
Table 6: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 6
Table 7: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 7
Table 8: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 8
Table 9: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 9
Table 10: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 10
Table 11: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 11
Table 12: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 12
Table 13: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 13
Table 14: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 14
Table 15: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 15
Table 16: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 16
Table 17: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 17
Table 18: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 18
Table 19: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 19
Table 20: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 20
Table 21: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 21
Table 22: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 22
Table 23: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 23
Table 24: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 24
Table 25: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 25
Table 26: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 26
Table 27: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 27
Table 28: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 28
Table 29: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 29
Table 30: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 30
Table 31: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 31
Table 32: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 32
Table 33: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 33
Table 34: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 34
Table 35: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 35
Table 36: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 36
Table 37: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 37
Table 38: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 38
Table 39: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 39
Table 40: the weight percentage and performance parameters of each component in the liquid crystal composition
Example 40
Table 41: the weight percentage and performance parameters of each component in the liquid crystal composition
Comparative example 1
Table 42: the weight percentage and performance parameters of each component in the liquid crystal composition
The liquid crystal compositions obtained in example 1 and comparative example 1 were compared in summary with respect to the values of the respective performance parameters, see Table 43.
Table 43: comparison of Performance parameters of liquid Crystal compositions
| Δn | △ε | Cp | γ1 | K11 | K22 | K33 | |
| Example 1 | 0.108 | -3.8 | 90 | 83 | 14.8 | 7.4 | 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 41
A liquid crystal mixture (PA1) for PSVA was prepared by adding 0.3% of polymerizable compound VIIA2 in mass percent to the nematic liquid crystal composition (N1) provided in example 1, and the nematic liquid crystal composition N1 and the PSVA mixture PA1 were charged into a standard VA test cell, and irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and the pretilt angle, threshold voltage, and response time were measured, respectively. The test results are shown in Table 44:
table 44: threshold voltage and response time test results
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 42
A liquid crystal mixture (PA4) for PSVA was prepared by adding 0.3% of polymerizable compound VIIA2 in mass percent to the nematic liquid crystal composition (N4) provided in example 4, and the nematic liquid crystal composition N4 and the PSVA mixture PA4 were charged into a standard VA test cell, and irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and the pretilt angle, threshold voltage, and response time were measured, respectively. The test results are shown in table 45:
table 45: threshold voltage and response time test results
| Item | titl(°) | V10(V) | T(ms) |
| N4 | 89.3 | 2.34 | 14.5 |
| PA4 | 82.1 | 1.90 | 5.4 |
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 43
A liquid crystal mixture (PB30) for PSVA was prepared by adding 0.4% of polymerizable compound VIIB2 in mass percent to the nematic liquid crystal composition (N30) provided in example 30, and the nematic liquid crystal composition N30 and PSVA mixture PB30 were charged into a standard VA test cell, and irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and the pretilt angle, threshold voltage, and response time were measured, respectively. The test results are shown in table 46:
table 46: threshold voltage and response time test results
| Item | titl(°) | V10(V) | T(ms) |
| N30 | 89.8 | 2.31 | 15.6 |
| PB30 | 81.6 | 1.89 | 5.9 |
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 44
A liquid crystal mixture for PSVA (PD33) was prepared by adding 0.5% by mass of the polymerizable compound VIID2 to the nematic liquid crystal composition (N33) provided in example 33, and the nematic liquid crystal composition N33 and the PSVA mixture PD33 were charged into a standard VA test cell, and irradiated with UV (100mw/cm2) for two minutes under application of a voltage of 10V, and the pretilt angle, the threshold voltage, and the response time were measured, respectively. The test results are shown in Table 47:
table 47: threshold voltage and response time test results
| Item | titl(°) | V10(V) | T(ms) |
| N33 | 89.7 | 2.39 | 16.0 |
| PD33 | 81.1 | 2.03 | 6.1 |
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 45
A liquid crystal mixture for PSVA (PC34) was prepared by adding 0.4% of polymerizable compound VIIC2 in mass percent to the nematic liquid crystal composition (N34) provided in example 34, and the nematic liquid crystal composition N34 and the PSVA mixture PC34 were charged into a standard VA test cell, and irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied, and the pretilt angle, threshold voltage, and response time were measured, respectively. The test results are shown in Table 48:
table 48: threshold voltage and response time test results
| Item | titl(°) | V10(V) | T(ms) |
| N34 | 89.4 | 2.43 | 14.8 |
| PC34 | 81.0 | 2.06 | 5.3 |
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 46
A liquid crystal mixture (PF36) for PSVA was prepared by adding 0.3% of polymerizable compound VIIF2 in mass percent to the nematic liquid crystal composition (N36) provided in example 36, and the nematic liquid crystal composition N36 and the PSVA mixture PF36 were charged into a standard VA test cell and irradiated with UV (100mw/cm2) for two minutes under a voltage of 10V applied to test the pretilt angle, threshold voltage and response time, respectively. The test results are shown in Table 49:
table 49: threshold voltage and response time test results
| Item | titl(°) | V10(V) | T(ms) |
| N36 | 89.4 | 2.70 | 14.3 |
| PF36 | 81.4 | 2.35 | 4.7 |
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.
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 (64)
1. The liquid crystal composition containing the polyfluorobiphenyl liquid crystal compound is characterized by comprising the following components in percentage by mass:
(1) 5-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% 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 12% of a compound represented by the general formula V;
(6) 0 to 23% of a compound represented by the general formula VI;
the general formula I is specifically as follows:
in the general formula I, R1、R2Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is1Represents H or F; z1Represents a single bond; ring A1Represents trans-1, 4-cyclohexyl or 1, 4-cyclohexene;
the general formula II is specifically:
in the general formula II, R3、R4Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); ring A2Ring A3Each independently represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
the general formula III is specifically:
in the general formula III, R5、R6Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); n is 0 or 1;
the general formula IV is specifically:
in the general formula IV, R7、R8Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); ring A5Represents trans-1, 4-cyclohexyl or 1, 4-phenylene;
the general formula V is specifically:
in the general formula V, R9、R10Each independently represents C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is2Represents H or F;
in the general formula VI, R11、R12Each independently represent F, C1～C12Linear alkyl, linear alkoxy or C2～C12A linear alkenyl group of (a); l is3、L4、L5Each independently represents H or F.
2. The liquid crystal composition of claim 1, wherein the compound represented by formula I is selected from one or more of formula IA to formula ID:
in IA to ID, R1Represents 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 of claim 2, wherein the compound represented by formula I is selected from one or more of formulae IA1 to ID 36:
4. liquid crystal composition according to claim 3, characterized in that, more preferably, the compound of formula I is one or more of the formulae IA13, IA14, IA15, IA16, IA19, IA20, IA21, IA22, IA25, IA26, IA31, IA32, IB14, IB19, IB20, IB26, IB32, IC14, IC19, IC20, IC26, IC32, ID14, ID 20.
5. Liquid crystal composition according to any of claims 1 to 4, wherein the compound of formula II is selected from one or more of formulae IIA to IIC:
in the IIA to IIC, R3Represents 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).
6. The liquid crystal composition of claim 5, wherein the compound of formula II is selected from one or more of formula IIA1 to formula IIC 24:
7. liquid crystal composition according to claim 6, characterized in that the compound of formula II is selected from one or more of the group consisting of the compounds of formulae IIA2, IIA6, IIA14, IIA18, IIA22, IIA23, IIA28, IIB10, IIB14, IIC2, IIC4, IIC15, IIC 20.
8. The liquid crystal composition of any one of claims 1 to 4, 6 and 7, wherein the compound of formula III is selected from one or more of formulae IIIA to IIIB:
in IIIA-IIIB, R5Represents C2～C7A linear alkyl or linear alkenyl group of (a); r6Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
9. The liquid crystal composition of claim 8, wherein the compound of formula III is selected from one or more of formulae IIIA 1-IIIB 36:
10. the liquid crystal composition of claim 9, wherein the compound represented by 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, and IIIB 35.
11. The liquid crystal composition of claim 5, wherein the compound of formula III is selected from one or more of formulae IIIA to IIIB:
in IIIA-IIIB, R5Represents C2～C7A linear alkyl or linear alkenyl group of (a); r6Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
12. The liquid crystal composition of claim 11, wherein the compound of formula III is selected from one or more of formulae IIIA 1-IIIB 36:
13. the liquid crystal composition of claim 12, wherein the compound represented by 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, and IIIB 35.
14. The liquid crystal composition according to any one of claims 1 to 4, 6, 7 and 9 to 13, wherein the compound represented by the general formula IV is selected from one or more compounds represented by the formulas IVA to IVB:
in the above-mentioned IVA to IVB, R7Represents C2～C7Linear alkyl or linear alkenyl of R8Represents C1～C7Linear alkyl or linear alkenyl of (1).
15. The liquid crystal composition of claim 14, wherein the compound of formula IV is selected from one or more of IVA 1-IVB 20:
16. liquid crystal composition according to claim 15, wherein the compound of formula IV is selected from one or more of the formulae IVA2, IVA6, IVA10, IVA13, IVA16, IVB2, IVB6, IVB8, IVB15, IVB 17.
17. The liquid crystal composition of claim 5, wherein the compound represented by formula IV is selected from one or more of formulae IVA to IVB:
in the above-mentioned IVA to IVB, R7Represents C2～C7Linear alkyl or linear alkenyl of R8Represents C1～C7Linear alkyl or linear alkenyl of (1).
18. The liquid crystal composition of claim 17, wherein the compound of formula IV is selected from one or more of IVA 1-IVB 20:
19. liquid crystal composition according to claim 18, wherein the compound of formula IV is selected from one or more of the formulae IVA2, IVA6, IVA10, IVA13, IVA16, IVB2, IVB6, IVB8, IVB15, IVB 17.
20. The liquid crystal composition of claim 8, wherein the compound represented by formula IV is selected from one or more of formulae IVA to IVB:
in the above-mentioned IVA to IVB, R7Represents C2～C7Linear alkyl or linear alkenyl of R8Represents C1～C7Linear alkyl or linear alkenyl of (1).
21. The liquid crystal composition of claim 20, wherein the compound of formula IV is selected from one or more of IVA 1-IVB 20:
22. liquid crystal composition according to claim 21, wherein the compound of formula IV is selected from one or more of the formulae IVA2, IVA6, IVA10, IVA13, IVA16, IVB2, IVB6, IVB8, IVB15, IVB 17.
23. Liquid crystal composition according to any of claims 1-4, 6, 7, 9-13, 15-22, wherein the compound of general formula V is selected from one or more of VA and VB:
in VA and VB, R9Represents C2～C7A linear alkyl or linear alkenyl group of (a); r10Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
24. The liquid crystal composition of claim 23, wherein the compound represented by formula V is one or more compounds selected from the group consisting of formula VA1 to formula VB 24:
25. the liquid crystal composition of claim 24, wherein the compound represented by formula V is selected from one or more of formulae VA2, VA9, VA10, VA14, VA16, VA22, VB9, VB10, VB14, and VB 22.
26. Liquid crystal composition according to claim 5, characterized in that the compound of formula V is selected from one or more of VA and VB:
in VA and VB, R9Represents C2～C7A linear alkyl or linear alkenyl group of (a); r10Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
27. The liquid crystal composition of claim 26, wherein the compound represented by formula V is selected from one or more of formulae VA1 to VB 24:
28. the liquid crystal composition of claim 27, wherein the compound represented by formula V is selected from one or more of formulae VA2, VA9, VA10, VA14, VA16, VA22, VB9, VB10, VB14, and VB 22.
29. Liquid crystal composition according to claim 8, characterized in that the compound of general formula V is selected from one or more of VA and VB:
in VA and VB, R9Represents C2～C7A linear alkyl or linear alkenyl group of (a); r10Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
30. The liquid crystal composition of claim 29, wherein the compound represented by formula V is one or more compounds selected from the group consisting of formula VA1 to formula VB 24:
31. the liquid crystal composition of claim 30, wherein the compound represented by formula V is selected from one or more of formulae VA2, VA9, VA10, VA14, VA16, VA22, VB9, VB10, VB14, and VB 22.
32. Liquid crystal composition according to claim 14, wherein the compound of formula V is selected from one or more of VA and VB:
in VA and VB, R9Represents C2～C7A linear alkyl or linear alkenyl group of (a); r10Represents C1～C7Linear alkyl or linear alkoxy groups of (1).
33. The liquid crystal composition of claim 32, wherein the compound represented by formula V is one or more selected from the group consisting of formula VA1 to formula VB 24:
34. the liquid crystal composition of claim 33, wherein the compound represented by formula V is selected from one or more of formulae VA2, VA9, VA10, VA14, VA16, VA22, VB9, VB10, VB14, and VB 22.
35. The liquid crystal composition of any one of claims 1 to 4, 6, 7, 9 to 13, 15 to 22, and 24 to 34, wherein the compound represented by formula VI is selected from one or more of formulae VIA to VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
36. The liquid crystal composition of claim 35, wherein the compound represented by formula VI is selected from one or more of formulae VIA 1-VIC 6:
37. the liquid crystal composition of claim 36, wherein the compound represented by formula VI is selected from one or more of the group consisting of VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8, and VIC 2.
38. The liquid crystal composition of claim 5, wherein the compound represented by formula VI is selected from one or more of formula VIA to formula VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
39. The liquid crystal composition of claim 38, wherein the compound represented by formula VI is selected from one or more of formulae VIA 1-VIC 6:
40. the liquid crystal composition of claim 39, wherein the compound represented by formula VI is selected from one or more of the group consisting of formula VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8, and VIC 2.
41. The liquid crystal composition of claim 8, wherein the compound represented by formula VI is selected from one or more of formulae VIA to VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
42. The liquid crystal composition of claim 41, wherein the compound represented by formula VI is selected from one or more of formulae VIA 1-VIC 6:
43. the liquid crystal composition of claim 42, wherein the compound represented by formula VI is selected from one or more of the group consisting of formula VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8, and VIC 2.
44. The liquid crystal composition of claim 14, wherein the compound represented by formula VI is selected from one or more of formula VIA to formula VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
45. The liquid crystal composition of claim 44, wherein the compound represented by formula VI is selected from one or more of formulae VIA 1-VIC 6:
46. the liquid crystal composition of claim 45, wherein the compound represented by formula VI is selected from one or more of the group consisting of VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8 and VIC 2.
47. The liquid crystal composition of claim 23, wherein the compound represented by formula VI is selected from one or more of formula VIA to formula VIC:
in the VIA-VIC, R is11、R12Each independently represents C1～C7Straight chain alkyl or C2～C7Linear alkenyl groups of (a).
48. The liquid crystal composition of claim 47, wherein the compound represented by formula VI is selected from one or more of formulas VIA 1-VIC 6:
49. the liquid crystal composition of claim 48, wherein the compound represented by formula VI is selected from one or more of the group consisting of formula VIA2, VIA3, VIA4, VIA6, VIA8, VIA17, VIA18, VIA19, VIA22, VIA23, VIA24, VIB2, VIB6, VIB7, VIB8, and VIC 2.
50. The liquid crystal composition according to any one of claims 1 to 4, 6, 7, 9 to 13, 15 to 22, 24 to 34, and 36 to 49, wherein the liquid crystal composition comprises the following components in percentage by mass:
(1) 5-16% 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) 0 to 30% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 23% of a compound represented by the general formula VI;
or (1) 16-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 23% of a compound represented by the general formula VI;
or (1) 5-26% of a compound represented by the general formula I;
(2) 33-66% of a compound represented by the general formula II;
(3) 5 to 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 10% of a compound represented by the general formula V;
(6) 0 to 23% of a compound represented by the general formula VI;
or (1) 10-30% of a compound represented by the general formula I;
(2) 19 to 34% of a compound represented by the general formula II;
(3) 25-57% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 14% of a compound represented by the general formula VI;
or (1) 10-26% of a compound represented by the general formula I;
(2) 31-66% of a compound represented by the general formula II;
(3) 5-34% 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 9% of a compound represented by the general formula V;
(6) 0 to 23% of a compound represented by the general formula VI;
or (1) 5-30% of a compound represented by the general formula I;
(2) 19-49% of a compound represented by the general formula II;
(3) 35-57% of a compound represented by the general formula III;
(4) 0 to 11% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 10% of a compound represented by the general formula VI;
or (1) 5-26% of a compound represented by the general formula I;
(2) 27 to 66% of a compound represented by the general formula II;
(3) 5-52% of a compound represented by the general formula III;
(4) 3-30% of a compound represented by the general formula IV;
(5) 0 to 12% of a compound represented by the general formula V;
(6) 0 to 15% of a compound represented by the general formula VI;
or (1) 10-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% of a compound represented by the general formula III;
(4) 0 to 10% of a compound represented by the general formula V;
(5) 0 to 23% of a compound represented by the general formula VI;
or (1) 5-30% 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) 0 to 30% of a compound represented by the general formula IV;
(5) 0 to 23% of a compound represented by the general formula VI;
or (1) 5-26% of a compound represented by the general formula I;
(2) 27 to 60% of a compound represented by the general formula II;
(3) 5-45% of a compound represented by the general formula III;
(4) 0 to 16% of a compound represented by the general formula IV;
(5) 4-12% of a compound represented by the general formula V;
(6) 0 to 11% of a compound represented by the general formula VI;
or (1) 5-26% of a compound represented by the general formula I;
(2) 32-55% of a compound represented by the general formula II;
(3) 5-39% of a compound represented by the general formula III;
(4) 0 to 10% of a compound represented by the general formula IV;
(5) 0 to 9% of a compound represented by the general formula V;
(6) 7-23% of a compound represented by the general formula VI;
or (1) 5-30% of a compound represented by the general formula I;
(2) 19-66% of a compound represented by the general formula II;
(3) 5-57% 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 12% of a compound represented by the general formula V;
or (1) 14-30% 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 (1) 10-24% 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) and 5-30% of a compound represented by the general formula IV.
51. The liquid crystal composition of any of claims 1-4, 6, 7, 9-13, 15-22, 24-34, 36-49, further comprising one or more polymerizable compounds represented by formula VII, in particular:
in the general formula VII, m represents 0 or 1; SP1、SP2Each independently represents a polymerizable group; l is6Represents H or F; l is7Representative H, F, C1～C5Straight chain alkyl or C1～C5Linear alkoxy groups of (1).
52. The liquid crystal composition of claim 51, wherein the polymerizable compound represented by formula VII is selected from one or more of formulas VIIA to VIIF:
among the VIIA to VIIF, SP1、SP2Each independently represents an acrylate group, a methacrylate group, a butenoate group or a linear alkenyl group of C2-C8.
53. The liquid crystal composition of claim 52, wherein the polymerizable compound represented by formula VII is selected from one or more compounds of formulas VIIA 1-VIIF 3:
54. the liquid crystal composition of claim 53, wherein the polymerizable compound represented by formula VII is selected from one or more of formulas VIIA2, VIIB2, VIIC2, VIID2, VIIE2, and VIIF 2.
55. The liquid crystal composition of claim 51, wherein the polymerizable compound is used in an amount of 0.1 to 5% by weight based on the total weight of other liquid crystal compounds in the liquid crystal composition.
56. The liquid crystal composition of claim 55, wherein the polymerizable compound is present in an amount of 0.2 to 1.0% by weight based on the total weight of the other liquid crystal compounds in the liquid crystal composition.
57. The liquid crystal composition of claim 56, wherein the polymerizable compound is present in an amount of 0.3 to 0.5% by weight based on the total weight of the other liquid crystal compounds in the liquid crystal composition.
58. The liquid crystal composition of any one of claims 52 to 54, wherein the polymerizable compound is used in an amount of 0.1 to 5% by weight based on the total weight of the other liquid crystal compounds in the liquid crystal composition.
59. The liquid crystal composition of claim 58, wherein the polymerizable compound is used in an amount of 0.2 to 1.0% by weight based on the total weight of other liquid crystal compounds in the liquid crystal composition.
60. The liquid crystal composition of claim 59, wherein the polymerizable compound is used in an amount of 0.3 to 0.5% by weight based on the total weight of other liquid crystal compounds in the liquid crystal composition.
61. Use of the liquid crystal composition according to any one of claims 1 to 60 in a display device.
62. Use of the liquid crystal composition of any one of claims 1 to 50 in a fast response liquid crystal display.
63. Use of the liquid crystal composition of any one of claims 1 to 50 in a VA mode display or an IPS, FFS mode display.
64. Use of the liquid crystal composition of any of claims 51-60 in a PSVA liquid crystal display.
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| CN113072956B (en) * | 2020-01-03 | 2023-03-31 | 北京八亿时空液晶科技股份有限公司 | High-contrast negative liquid crystal composition containing phenprobucol and application thereof |
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| JP5359016B2 (en) * | 2008-05-08 | 2013-12-04 | Ｊｎｃ株式会社 | Liquid crystal composition and liquid crystal display element |
| JP5515619B2 (en) * | 2009-10-26 | 2014-06-11 | Ｊｎｃ株式会社 | Liquid crystal composition and liquid crystal display element |
| JP6248557B2 (en) * | 2012-11-16 | 2017-12-20 | Jnc株式会社 | Liquid crystalline compound having vinyloxy, liquid crystal composition, and liquid crystal display device |
| CN106753422B (en) * | 2015-11-19 | 2021-04-20 | 江苏和成显示科技有限公司 | Liquid crystal composition and display device thereof |
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| EP0969071A1 (en) * | 1998-06-02 | 2000-01-05 | Chisso Corporation | Alkenyl compound having a negative delta epsilon value, liquid crystal composition and liquid crystal display device |
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