WO2021134879A1 - Composition de cristaux liquides positifs à contraste élevé - Google Patents

Composition de cristaux liquides positifs à contraste élevé Download PDF

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Publication number
WO2021134879A1
WO2021134879A1 PCT/CN2020/077001 CN2020077001W WO2021134879A1 WO 2021134879 A1 WO2021134879 A1 WO 2021134879A1 CN 2020077001 W CN2020077001 W CN 2020077001W WO 2021134879 A1 WO2021134879 A1 WO 2021134879A1
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Prior art keywords
general formula
compound represented
liquid crystal
compound
positive liquid
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Ceased
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PCT/CN2020/077001
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English (en)
Chinese (zh)
Inventor
陈卯先
储士红
陈海光
姜天孟
未欣
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Beijing Bayi Space LCD Technology Co Ltd
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Beijing Bayi Space LCD Technology Co Ltd
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Publication of WO2021134879A1 publication Critical patent/WO2021134879A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods

Definitions

  • the invention relates to the field of liquid crystal compositions, in particular to a positive liquid crystal composition with high contrast.
  • LCD displays have been widely used in various products.
  • IPS and FFS mode displays are widely used in mobile phones, laptops, and tablets because of their unique hard screen characteristics and very wide viewing angle characteristics.
  • the present invention aims to provide a liquid crystal composition with a large elastic constant, so as to achieve the purpose of improving the contrast of the liquid crystal display.
  • the present invention finds that the liquid crystal composition provided by the present invention has a large elastic constant on the one hand, and a lower rotational viscosity on the other hand, thereby realizing a liquid crystal display with high contrast and fast response.
  • the positive liquid crystal composition of the present invention includes one or more compounds represented by the general formula I:
  • R 1 and R 2 each independently represent a C 1 ⁇ C 12 linear alkyl group, a linear alkoxy group or a C 2 ⁇ C 12 linear alkenyl group;
  • the positive liquid crystal composition includes one or more compounds represented by general formula II:
  • a 2 each independently represents:
  • a 3 each independently represents:
  • the positive liquid crystal composition includes one or more compounds represented by the general formula III:
  • R 4 and R 5 each independently represent a C 1 ⁇ C 12 linear alkyl group, a linear alkoxy group or a C 2 ⁇ C 12 linear alkenyl group, and A 4 , A 5 each independently represent a trans 1,4-cyclohexyl or 1,4-phenylene.
  • the compound of the general formula I provided by the present invention is a compound containing a cyclohexene structure. This type of compound has a large elastic constant and is very effective for improving the elastic constant of the liquid crystal composition.
  • the compound of formula II provided by the present invention contains a CF2O bridge structure and has a very large dielectric anisotropy. When used in a liquid crystal composition, it can effectively improve the dielectric anisotropy of the liquid crystal composition.
  • the present invention provides The compound of the general formula III is a two-ring structure compound, which has a very low rotational viscosity, and is very effective for reducing the rotational viscosity of the liquid crystal composition. The combination of the above-mentioned substances can effectively improve the contrast and response speed of the liquid crystal display.
  • the compound represented by general formula I is selected from one or more of IA to IB:
  • R 1 and R 2 each independently represent a C 1 to C 7 linear alkyl group or a C 2 to C 7 linear alkenyl group;
  • the compound represented by the general formula I is selected from one or more of the formulas IA1 to IB45:
  • the compound of formula I is selected from one or more of IA3, IA12, IA21, IA23, IA24, IA25, IA39, IA43, IB3, IB5, IB8, IB10, IB26, IB27, IB30, IB31 ;
  • the compound of formula I is selected from one or more of IA3, IA21, IA23, IA24, IA25, IA39, IA43, IB3, IB5, IB8, IB10, IB26, IB27, IB30, IB31;
  • the compound of formula I is selected from one or more of IA3, IA21, IA23, IA39, IB3, IB5, IB8, IB10, IB26, IB27, IB30, IB31;
  • the positive liquid crystal composition contains the compound of general formula I in a mass percentage of 1 to 35%;
  • the mass percentage of the compound of general formula I is 2-30%, 2-14%, 10-30%, 5-18%, 2-28%, 5-28%, 5-25% or 2-26% ;
  • the mass percentage of the compound represented by the general formula I is 2-24%, 7-20%, 7-16%, 6-24%, 6-16%, 10-24% or 2-14%.
  • the compound of formula II is selected from one or more of IIA to IIM:
  • the compound represented by the general formula II is selected from one or more of the formulas IIA1 to IIC30:
  • the compound of formula II is selected from formula IIA3, IIB2, IIB3, IIC2, IIC3, IID2, IID3, IIF3, IIG3, IIG4, IIH3, IIH4, IIH5, IIJ3, IIK2, IIK3, IIL3, IIM3, IIM4 One or more of;
  • the compound of formula II is selected from one or more of formula IIB3, IIC2, IIC3, IID3, IIF3, IIG3, IIG4, IIH3, IIH4, IIH5, IIK3, IIL3, IIM3, IIM4;
  • the compound of formula II is selected from one or more of formula IIB3, IIC2, IIC3, IID3, IIG3, IIG4, IIH3, IIH4, IIH5, IIL3, IIM3, IIM4;
  • the positive liquid crystal composition contains 5-50% of the compound represented by general formula II;
  • the positive liquid crystal composition contains 8 to 37%, 8 to 40%, 8 to 35%, 15 to 40%, 8 to 21%, 8 to 38% of the compound represented by general formula II ;
  • the positive liquid crystal composition contains 11 to 34%, 11 to 30%, 12 to 27%, 11 to 30%, 11 to 34%, 11 to 21%, 15 to 34%, 11 to 33 %, 12 to 34% of the compound represented by Formula II.
  • the compound represented by the general formula III is selected from one or more of the formulas IIIA to IIIC:
  • R 4 each independently represents a C 1 ⁇ C 7 linear alkyl group
  • R 5 each independently represents a C 1 ⁇ C 7 linear alkyl group, a linear alkoxy group or a C 2 ⁇ C 7 straight chain Alkenyl
  • the compound represented by the general formula III is selected from one or more of the formulas IIIA1 to IIIC24:
  • the compound represented by the general formula III is selected from one or more of IIIA3, IIIA7, IIIA11, IIIA12, IIIA25, IIIA29, IIIA31, IIIA37, IIIB18, IIIB22, IIIC2, IIIC4, IIIC15, and IIIC20;
  • the compound represented by the general formula III is selected from one or more of IIIA25, IIIA29, IIIA37, IIIB18, IIIB22, IIIC2, IIIC4, IIIC15, and IIIC20;
  • the positive liquid crystal composition contains 10 to 75% of the compound represented by the general formula III;
  • the positive liquid crystal composition contains 20 to 70%, 30 to 70%, 20 to 50%, 30 to 50%, 20 to 65% of the compound represented by general formula III;
  • the positive liquid crystal composition contains 22 to 62%, 42 to 65%, 22 to 65%, 32 to 47%, 32 to 65%, 22 to 47% of the compound represented by the general formula III.
  • the positive liquid crystal composition further includes one or more compounds represented by the general formula IV:
  • R 6 and R 7 each independently represent a C 1 ⁇ C 12 linear alkyl group, a linear alkoxy group or a C 2 ⁇ C 12 linear alkenyl group;
  • a 6 each independently represents a trans 1,4 -Cyclohexyl or 1,4-phenylene;
  • the compound represented by the general formula IV is selected from one or more of IVA-IVB:
  • R 6 and R 7 each independently represent a C 1 to C 7 linear alkyl group, a linear alkoxy group, or a C 2 to C 7 linear alkenyl group.
  • the compound represented by the general formula IV is selected from one or more of IVA1 to IVB62:
  • the compound represented by formula IV is selected from one or more of IVA3, IVA5, IVA8, IVA10, IVA26, IVA31, IVA33, IVA53, IVB3, IVB5, IVB8, IVB10, IVB13, IVB25, IVB30, IVB35 Species
  • the compound of general formula IV provided by the present invention is selected from one or more of IVA3, IVA8, IVA10, IVA26, IVA31, IVA33, IVA53, IVB3, IVB8, IVB13, IVB25, IVB30, IVB35;
  • the positive liquid crystal composition contains 0-35% of the compound represented by general formula IV;
  • the positive liquid crystal composition contains 0-25%, 0-21%, 0-20%, 1-25%, 0-22%, 0-18% of the compound represented by general formula IV;
  • the positive liquid crystal composition contains 3-21%, 6-21%, 3-18% of the compound represented by general formula IV.
  • the positive liquid crystal composition of the present invention further includes one or more compounds represented by the general formula V:
  • R 8 each independently represents a C 1 ⁇ C 12 linear alkyl group, a linear alkoxy group or a C 2 ⁇ C 12 linear alkenyl group
  • X 1 each independently represents F, CF 3 , OCF 3
  • L 1 and L 2 each independently represent H or F
  • a 7 each independently represents:
  • the compound represented by the general formula V is selected from one or more of VA to VK:
  • R 8 each independently represents a C 1 -C 7 linear alkyl group or a C 2 -C 7 linear alkenyl group
  • X1 each independently represents F, CF 3 or OCF 3 ;
  • R 8 each independently represents a C 1 -C 5 linear alkyl group or a C 2 -C 5 linear alkenyl group;
  • X1 each independently represents F, CF 3 or OCF 3 .
  • the positive liquid crystal composition further includes one or more compounds represented by the general formula VI:
  • R 9 and R 10 each independently represent F, a C 1 ⁇ C 12 linear alkyl group or a C 2 ⁇ C 12 linear alkenyl group;
  • the compound represented by the general formula VI is selected from one or more of VIA or VIB:
  • R 9 and R 10 each independently represent a C 1 to C 7 linear alkyl group or a C 4 to C 5 linear alkenyl group;
  • R 9 and R 10 each independently represent a C 1 to C 5 linear alkyl group or a C 4 to C 5 linear alkenyl group.
  • the positive liquid crystal composition of the present invention further includes a compound represented by general formula VII or general formula VIII:
  • R 11 , R 12 , and R 13 each independently represent a C 1 ⁇ C 12 linear alkyl group
  • L 3 , L 4 , L 5 each independently represent H or F
  • X 2 each independently represents F, CF 3. OCF 3 ;
  • the compound represented by the general formula VIII is selected from one or more of VIIIA to VIIIJ:
  • R 13 each independently represents a C 1 -C 7 linear alkyl group
  • R 13 each independently represents a C 1 -C 5 linear alkyl group.
  • the liquid crystal composition of the present invention includes the following components in mass percentage:
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a low rotational viscosity, and is very effective for improving the contrast of the liquid crystal display and improving the response time.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a very large elastic constant and is very effective for improving the contrast of the liquid crystal display.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and excellent low-temperature miscibility. It is very effective for improving the miscibility of the liquid crystal composition and improving the low-temperature working temperature range. It can improve the liquid crystal display's performance when used in liquid crystal displays. Contrast and broaden the low temperature working temperature of LCD monitors.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a large dielectric anisotropy, as well as a low rotational viscosity.
  • the liquid crystal composition provided by the present invention has high contrast and low drive for use in liquid crystal displays. Voltage and has a fast response time.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a low rotational viscosity, and is very effective for improving the contrast of the liquid crystal display and reducing the response time.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a large dielectric anisotropy, as well as a low rotational viscosity.
  • the liquid crystal composition provided by the present invention has high contrast and low drive for use in liquid crystal displays. Voltage and has a fast response time.
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a low rotational viscosity.
  • the liquid crystal composition has very excellent stability, which is very effective for improving the contrast of the liquid crystal display, improving the response time and enhancing the reliability of the liquid crystal display. .
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • liquid crystal compound provided by the present invention contains the following components by mass percentage:
  • the liquid crystal composition provided by the present invention has a large elastic constant and a large dielectric anisotropy, as well as a low rotational viscosity.
  • the liquid crystal composition provided by the present invention has high contrast and low drive for use in liquid crystal displays. Voltage and has a fast response time.
  • the preparation method of the liquid crystal composition of the present invention is not particularly limited.
  • the conventional method can be used to mix two or more compounds for production, such as by mixing different components at high temperature and dissolving each other, wherein the liquid crystal is combined
  • the compound is dissolved in the solvent used for the compound and mixed, and then the solvent is distilled off under reduced pressure; or the liquid crystal composition of the present invention can be prepared according to a conventional method, such as mixing the smaller component in the higher It is obtained by dissolving in the main component with a large content at a temperature of high temperature, or dissolving each component in an organic solvent, such as acetone, chloroform or methanol, and then mixing the solution to remove the solvent.
  • an organic solvent such as acetone, chloroform or methanol
  • Another objective of the present invention is to protect the application of the positive liquid crystal composition of the present invention in LCD displays
  • the present invention increases the elastic constant of the liquid crystal composition by adding the compound represented by the general formula I, increases the dielectric anisotropy of the liquid crystal composition by increasing the compound of the general formula II, and increases the compound of the general formula III to reduce the rotational viscosity; the research of the present invention
  • the personnel found that the compound represented by the general formula I has a very large elastic constant and a low rotational viscosity, which can improve the elastic constant of the liquid crystal composition while maintaining the rotational viscosity unchanged, thereby meeting the high contrast required by liquid crystal displays. And the purpose of quick response.
  • percentages in the present invention are weight percentages; temperature units are degrees Celsius; ⁇ n represents optical anisotropy (25°C); ⁇ ⁇ and ⁇ ⁇ represent parallel and perpendicular dielectric constants (25°C, 1000 Hz), respectively; ⁇ represents the dielectric anisotropy (25°C, 1000Hz); ⁇ 1 represents the rotational viscosity (mPa.s, 25°C); Cp represents the clearing point (°C) of the liquid crystal composition; K 11 , K 22 , and K 33 represent respectively Spreading, twisting and bending elastic constant (pN, 25°C); Kavg represents the average elastic constant ((K 11 +K 22 +K 33 )/3)
  • Table 1 Group structure codes of liquid crystal compounds
  • the preparation of the liquid crystal composition adopts the thermal dissolution method, which includes the following steps: weigh the liquid crystal compound by weight percentage with a balance, wherein the order of weighing and addition is not specified, and the melting point of the liquid crystal compound is usually from high to low. Weigh and mix in sequence, heat and stir at 60-100°C to make the components melt uniformly, filter, rotatably, and finally package to obtain the target sample.
  • Table 2 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 3 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 4 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 5 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 6 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 7 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 8 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 9 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 10 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 11 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 12 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 13 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 14 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 15 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 16 The weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 17 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 18 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 19 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 20 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 21 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 22 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 23 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 24 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 25 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 26 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 27 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 28 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 29 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 30 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 31 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 32 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 33 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 34 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 35 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 36 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 37 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 38 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 39 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 40 Weight percentages and performance parameters of each component in the liquid crystal composition
  • Table 41 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Table 42 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Example 1 Compared with Example 1, the difference lies in that it does not contain the cyclohexene structure represented by the general formula I.
  • Table 43 Weight percentage and performance parameters of each component in the liquid crystal composition
  • Example 1 has a larger elastic constant compared with Comparative Example 1.
  • the elastic constant of Example 1 is increased by about 20%, that is, it can be used in liquid crystal displays. Increase the contrast by about 20%.
  • the liquid crystal composition provided by the present invention has a large elastic constant, and when used in IPS and FFS mode displays, it can effectively improve the contrast of liquid crystal displays. Therefore, the IPS or FFS type TFT liquid crystal display device to which the liquid crystal composition provided by the present invention is applicable can reduce the dark state light leakage of the liquid crystal display, reduce the dark state light leakage of the liquid crystal display, can significantly improve the contrast of the liquid crystal display, and can improve the IPS or Contrast characteristics of FFS mode LCD.
  • the present invention provides a positive liquid crystal composition with high contrast.
  • the positive liquid crystal composition of the present invention includes one or more compounds represented by general formula I:
  • R 1 and R 2 each independently represent a C 1 to C 12 linear alkyl group, a linear alkoxy group, or a C 2 to C 12 linear alkenyl group.
  • the present invention found that the compound represented by the general formula I has a very large elastic constant and a low rotational viscosity, which can improve the elastic constant of the liquid crystal composition while maintaining the rotational viscosity unchanged, thereby meeting the high requirements of liquid crystal displays The purpose of contrast and quick response has good economic value and application prospects.

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

L'invention concerne une composition de cristaux liquides positifs ayant un contraste élevé. La composition de cristaux liquides positifs comprend un ou plusieurs composés représentés par la formule générale (I) : dans laquelle R1 et R2 représentent chacun indépendamment un alkyle linéaire ou un alcoxy linéaire en C1-C12, ou un alcényle linéaire en C2-C12. Le composé représenté par la formule générale I a une très grande constante élastique et une viscosité rotationnelle relativement faible, peut améliorer la constante élastique de la composition de cristaux liquides tout en maintenant la constante de viscosité rotationnelle, et satisfait aux exigences requises d'un dispositif d'affichage à cristaux liquides, notamment un contraste élevé et une réponse rapide.
PCT/CN2020/077001 2020-01-03 2020-02-27 Composition de cristaux liquides positifs à contraste élevé Ceased WO2021134879A1 (fr)

Applications Claiming Priority (2)

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CN202010006389.6 2020-01-03
CN202010006389.6A CN113072957A (zh) 2020-01-03 2020-01-03 一种具有高对比度的正性液晶组合物

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KR20210125922A (ko) 2020-04-09 2021-10-19 메르크 파텐트 게엠베하 액정 매질
CN116162467A (zh) * 2021-11-24 2023-05-26 江苏和成显示科技有限公司 一种液晶组合物及液晶显示器件
CN116162465B (zh) * 2021-11-24 2024-12-13 江苏和成显示科技有限公司 一种液晶组合物及包含其的液晶显示器件
CN116162463A (zh) * 2021-11-24 2023-05-26 江苏和成显示科技有限公司 一种液晶组合物及其应用
CN115960614B (zh) * 2023-01-06 2024-08-27 北京八亿时空液晶科技股份有限公司 一种具有高对比度的正性液晶组合物及其应用

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