WO2021134880A1 - Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene structure and application thereof - Google Patents

Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene structure and application thereof Download PDF

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WO2021134880A1
WO2021134880A1 PCT/CN2020/077005 CN2020077005W WO2021134880A1 WO 2021134880 A1 WO2021134880 A1 WO 2021134880A1 CN 2020077005 W CN2020077005 W CN 2020077005W WO 2021134880 A1 WO2021134880 A1 WO 2021134880A1
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general formula
compound represented
liquid crystal
crystal composition
represented
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PCT/CN2020/077005
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French (fr)
Chinese (zh)
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储士红
陈卯先
陈海光
姜天孟
未欣
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北京八亿时空液晶科技股份有限公司
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Publication of WO2021134880A1 publication Critical patent/WO2021134880A1/en

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Definitions

  • the invention belongs to the field of liquid crystal compositions, and specifically relates to a liquid crystal composition containing a 2-methyl-3,4,5-trifluorobenzene structure.
  • 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 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 liquid crystal composition includes one or more compounds represented by general formula II:
  • a 2 each independently represents:
  • a 3 each independently represents:
  • the 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 general formula II provided by the present invention contains a compound in which a 2-methyl-3,4,5-trifluorobenzene structure is connected to a CF2O bridge bond. This type of compound has a very large dielectric anisotropy and a very large The dielectric anisotropy of the liquid crystal composition can effectively improve the dielectric anisotropy of the liquid crystal composition.
  • the compound of the general formula III provided by the present invention is a two-ring structure compound, and this type of compound has a very low
  • the rotational viscosity 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 liquid crystal composition contains 1 to 35% of the compound of formula I by mass;
  • 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 represented by the general formula II is selected from one or more of IIA to IIM:
  • the compound represented by general formula II is selected from one or more of formula IIA1 to IIM5:
  • 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
  • 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 liquid crystal composition contains 5-50% of the compound represented by general formula II;
  • the 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 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 general 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 liquid crystal composition contains 10-75% of the compound represented by the general formula III;
  • the 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 liquid crystal composition contains 22 to 62%, 42 to 65%, 22 to 65%, 32 to 47%, 32 to 65%, and 22 to 47% of the compound represented by the general formula III.
  • the 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 liquid crystal composition contains 0-35% of the compound represented by general formula IV;
  • the 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 liquid crystal composition contains 3-21%, 6-21%, 3-18% of the compound represented by the general formula IV.
  • 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 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 liquid crystal composition of the present invention includes the following components in mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition has a very large elastic constant and is very effective for improving the contrast of a liquid crystal display.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition has a large elastic constant and excellent low-temperature mutual solubility, and is very effective for improving the contrast of the liquid crystal display and broadening the low-temperature working range of the liquid crystal display.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition 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.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • the above-mentioned liquid crystal composition has a large elastic constant and low rotational viscosity, and has very excellent stability. It is very effective for improving the contrast of liquid crystal displays and improving the response time. In addition, the liquid crystal display produced by the liquid crystal composition has very excellent Reliability.
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components by mass percentage:
  • liquid crystal composition provided by the present invention contains the following components in mass percentage:
  • the above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
  • 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 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, pN, 25°C)
  • Table 1 Group structure codes of liquid crystal compositions
  • the liquid crystal composition is prepared by the thermal dissolution method, which includes the following steps: weigh the liquid crystal composition by weight percentage with a balance, wherein the order of weighing and addition is not specified, and the melting point of the liquid crystal composition is usually from high to Weigh and mix in low order, heat and stir at 60-100°C to make the components melt uniformly, then filter, rotate and steam, and finally encapsulate 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
  • 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, and the elastic constant of Example 1 is increased by about 20%, that is, it can increase the contrast of about 20% when used in a liquid crystal display. .
  • 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 improve the dark state light leakage problem of the liquid crystal display, can significantly improve the contrast of the liquid crystal display, and can improve the contrast characteristics of the IPS or FFS mode liquid crystal display .
  • the present invention provides a liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene structure.
  • the composition of the present invention includes one or more compounds represented by the general formula I:
  • 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 present invention finds
  • the compound represented by the general formula I has a very large elastic constant and a low rotational viscosity. It can improve the elastic constant of the liquid crystal composition while maintaining the rotational viscosity unchanged, thereby meeting the high contrast and fast speed requirements of liquid crystal displays.
  • the purpose of the response has good economic value and application prospects.

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Abstract

The present invention relates to the technical field of liquid crystal compositions, and specifically relates to a liquid crystal composition containing a 2-methyl-3,4,5-trifluorobenzene structure. The composition of the present invention comprises one or more compounds represented by general formula I: (I) a compound represented by general formula II: (II) and a compound represented by general formula III: (III). The present invention increases an elastic constant of the liquid crystal composition by adding the compound represented by general formula I, increases the dielectric anisotropy of the liquid crystal composition by increasing a general formula II-type compound, and reduces rotational viscosity by increasing the compound represented by general formula III. In addition, it is discovered in the present invention that the compound represented by general formula I has a relatively low rotational viscosity while having a very large elastic constant, and may keep the rotational viscosity unchanged while improving the elastic constant of the liquid crystal composition, thereby satisfying the requirements for a liquid crystal display of high contrast and rapid response.

Description

一种含有2-甲基-3,4,5三氟苯结构的液晶组合物及其应用Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene structure and application thereof
交叉引用cross reference
本申请要求2020年1月3日提交的专利名称为“一种含有2-甲基-3,4,5三氟苯结构的液晶组合物及其应用”的第202010007004.8号中国专利申请的优先权，其全部公开内容通过引用整体并入本文。This application claims the priority of the Chinese patent application No. 202010007004.8 filed on January 3, 2020, entitled "A liquid crystal composition containing 2-methyl-3,4,5 trifluorobenzene structure and its application" , The entire disclosure of which is incorporated herein by reference in its entirety.
技术领域Technical field
本发明属于液晶组合物领域，具体涉及一种含有2-甲基-3,4,5三氟苯结构的液晶组合物。The invention belongs to the field of liquid crystal compositions, and specifically relates to a liquid crystal composition containing a 2-methyl-3,4,5-trifluorobenzene structure.
背景技术Background technique
目前，LCD显示器作为最主流的显示器，已广泛用于各种产品中，其中IPS和FFS模式显示器因为其独有的硬屏特性以及非常宽的视角特性，目前广泛用于手机、笔记本电脑、平板电脑、电脑显示器、电视等方面。At present, as the most mainstream display, LCD displays have been widely used in various products. Among them, 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. Computers, computer monitors, televisions, etc.
IPS和FFS液晶平面排列导致在暗态时容易出现漏光，对比度性能方面明显劣势于VA类(MVA、PVA、UV2A、PSVA)显示器。经过研究发现，液晶分子在初始排列时，由于配向层表面存在的配向碎屑等会导致液晶分子排列紊乱从而导致暗态漏光；如何改善液晶排列紊乱成为如何提升IPS和FFS模式显示器的重要课题，通过研究发现，液晶的弹性常数增加有助于改善液晶分子的排列。提升液晶组合物的清亮点可以实现提升弹性常数的目的，但是随着清亮点提升，液晶组合物的旋转粘度增加，从而导致液晶显示器响应时间变慢。The planar arrangement of IPS and FFS liquid crystals causes light leakage in the dark state, and the contrast performance is obviously inferior to VA type (MVA, PVA, UV2A, PSVA) displays. It has been discovered through research that when the liquid crystal molecules are initially aligned, the alignment debris on the surface of the alignment layer will cause the alignment of the liquid crystal molecules to be disordered, leading to light leakage in the dark state; how to improve the disorder of the liquid crystal alignment has become an important issue for how to improve the IPS and FFS mode displays. Through research, it is found that an increase in the elastic constant of liquid crystal helps to improve the arrangement of liquid crystal molecules. Increasing the clearing point of the liquid crystal composition can achieve the purpose of increasing the elastic constant, but as the clearing point increases, the rotational viscosity of the liquid crystal composition increases, which results in a slower response time of the liquid crystal display.
发明内容Summary of the invention
本发明旨在提供一种具有大的弹性常数的液晶组合物，以此实现改善液晶显示器对比度的目的。本发明发现，本发明所提供的液晶组合物一方面具有大的弹性常数，另一方面具有较低的旋转粘度，从而实现高对比度和快速响应的液晶显示器。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.
本发明所述液晶组合物中包括一种或几种通式I所代表的化合物：The liquid crystal composition of the present invention includes one or more compounds represented by the general formula I:
Figure PCTCN2020077005-appb-000001
Figure PCTCN2020077005-appb-000001
其中，R 1、R 2各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基； Wherein, 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;
所述液晶组合物中包括一种或几种通式II所代表的化合物：The liquid crystal composition includes one or more compounds represented by general formula II:
Figure PCTCN2020077005-appb-000002
Figure PCTCN2020077005-appb-000002
其中，R 3各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；n 1＝0或1；A 1各自独立地代表： Wherein, R 3 each independently represents a C 1 ～C 12 linear alkyl group, a linear alkoxy group or a C 2 ～C 12 linear alkenyl group; n 1 =0 or 1; A 1 each independently represents:
Figure PCTCN2020077005-appb-000003
Figure PCTCN2020077005-appb-000003
A 2各自独立地代表： A 2 each independently represents:
Figure PCTCN2020077005-appb-000004
Figure PCTCN2020077005-appb-000004
A 3各自独立地代表： A 3 each independently represents:
Figure PCTCN2020077005-appb-000005
Figure PCTCN2020077005-appb-000005
所述液晶组合物中包括一种或几种通式III所代表的化合物：The liquid crystal composition includes one or more compounds represented by the general formula III:
Figure PCTCN2020077005-appb-000006
Figure PCTCN2020077005-appb-000006
其中，R 4、R 5各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基，A 4、A 5各自独立地代表反式1，4-环己基或1，4-亚苯基。 Wherein, 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.
本发明所提供的通式I的化合物为含有环己烯结构的化合物，该类化合物具有大的弹性常数，对于提升液晶组合物的弹性常数非常有效。本发明所提供的通式II的化合物含有2-甲基-3,4,5-三氟苯结构与CF2O桥键相连的化合物，该类化合物具有非常大的介电各向异性，具有非常大的介电各向异性，用于液晶组合物中可有效地提升液晶组合物的介电各向异性，本发明所提供的通式III的化合物为两环结构化合物，该类化合物具有非常低的旋转粘度，对于降低液晶组合物的旋旋转粘度非常有效。上述几种物质组合使用，可有效地提高液晶显示器的对比度和响应速度。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 general formula II provided by the present invention contains a compound in which a 2-methyl-3,4,5-trifluorobenzene structure is connected to a CF2O bridge bond. This type of compound has a very large dielectric anisotropy and a very large The dielectric anisotropy of the liquid crystal composition can effectively improve the dielectric anisotropy of the liquid crystal composition. The compound of the general formula III provided by the present invention is a two-ring structure compound, and this type of compound has a very low The rotational viscosity 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.
作为优选的方案，通式I所代表的化合物选自IA～IB中的一种或多种：As a preferred scheme, the compound represented by general formula I is selected from one or more of IA to IB:
Figure PCTCN2020077005-appb-000007
Figure PCTCN2020077005-appb-000007
其中，R 1、R 2各自独立地代表C 1～C 7的直链烷基或C 2～C 7的直链烯基； Wherein, 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;
优选地，通式I所代表的化合物选自式IA1～IB45中的一种或多种：Preferably, the compound represented by the general formula I is selected from one or more of the formulas IA1 to IB45:
Figure PCTCN2020077005-appb-000008
Figure PCTCN2020077005-appb-000008
Figure PCTCN2020077005-appb-000009
Figure PCTCN2020077005-appb-000009
Figure PCTCN2020077005-appb-000010
Figure PCTCN2020077005-appb-000010
Figure PCTCN2020077005-appb-000011
Figure PCTCN2020077005-appb-000011
Figure PCTCN2020077005-appb-000012
Figure PCTCN2020077005-appb-000012
更优选地，通式I所述化合物选自IA3、IA12、IA21、IA23、IA24、IA25、IA39、IA43、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；More preferably, 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 ；
特别优选地，通式I所述化合物选自IA3、IA21、IA23、IA24、IA25、IA39、IA43、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；Particularly preferably, 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;
最优选地，通式I所述化合物选自IA3、IA21、IA23、IA39、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；Most preferably, the compound of formula I is selected from one or more of IA3, IA21, IA23, IA39, IB3, IB5, IB8, IB10, IB26, IB27, IB30, IB31;
优选的，所述液晶组合物包含质量百分比为1～35％的通式I的化合物；Preferably, the liquid crystal composition contains 1 to 35% of the compound of formula I by mass;
进一步优选质量百分比为2～30％，2～14％，10～30％，5～18％，2～28％，5～28％，5～25％或2～26％的通式I的化合物；More preferably, 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% ；
更优选质量百分比为2～24％，7～20％，7～16％，6～24％，6～16％，10～24％或2～14％的通式I所代表的化合物。More preferably, 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%.
作为优选的方案，所述通式II所代表的化合物选自IIA～IIM中的一种或多种：As a preferred solution, the compound represented by the general formula II is selected from one or more of IIA to IIM:
Figure PCTCN2020077005-appb-000013
Figure PCTCN2020077005-appb-000013
优选地，通式Ⅱ所代表的化合物选自式IIA1～IIM5中的一种或多种：Preferably, the compound represented by general formula II is selected from one or more of formula IIA1 to IIM5:
Figure PCTCN2020077005-appb-000014
Figure PCTCN2020077005-appb-000014
Figure PCTCN2020077005-appb-000015
Figure PCTCN2020077005-appb-000015
Figure PCTCN2020077005-appb-000016
Figure PCTCN2020077005-appb-000016
更优选地，通式II的化合物选自式IIA3、IIB2、IIB3、IIC2、IIC3、IID2、IID3、IIF3、IIG3、IIG4、IIH3、IIH4、IIH5、IIJ3、IIK2、IIK3、IIL3、IIM3、IIM4中的一种或多种；More preferably, 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
特别优选地，通式II的化合物选自式IIB3、IIC2、IIC3、IID3、IIF3、IIG3、IIG4、IIH3、IIH4、IIH5、IIK3、IIL3、IIM3、IIM4中的一种或多种；Particularly preferably, 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;
最优选地，通式II的化合物选自式IIB3、IIC2、IIC3、IID3、IIG3、IIG4、IIH3、IIH4、IIH5、IIL3、IIM3、IIM4中的一种或多种；Most preferably, 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;
优选的，所述液晶组合物包含5～50％的通式II所代表的化合物；Preferably, the liquid crystal composition contains 5-50% of the compound represented by general formula II;
更优选地，所述液晶组合物包含8～37％，8～40％，8～35％，15～40％，8～21％，8～38％的通式II所代表的化合物；More preferably, the 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;
特别优选地，所述液晶组合物包含11～34％，11～30％，12～27％，11～30％，11～34％，11～21％，15～34％，11～33％，12～34％的通式II所代表的化合物。Particularly preferably, the 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 general formula II.
作为优选的方案，通式III所代表的化合物选自式IIIA～IIIC中的一种或多种：As a preferred solution, the compound represented by the general formula III is selected from one or more of the formulas IIIA to IIIC:
Figure PCTCN2020077005-appb-000017
Figure PCTCN2020077005-appb-000017
其中，R 4各自独立地代表C 1～C 7的直链烷基；R 5各自独立地代表C 1～C 7的直链烷基、直链烷氧基或C 2～C 7的直链烯基； Wherein, 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
进一步优选地，通式III所代表的化合物选自式IIIA1～IIIC24中的一种或多种：Further preferably, the compound represented by the general formula III is selected from one or more of the formulas IIIA1 to IIIC24:
Figure PCTCN2020077005-appb-000018
Figure PCTCN2020077005-appb-000018
Figure PCTCN2020077005-appb-000019
Figure PCTCN2020077005-appb-000019
更优选地，通式III所代表的化合物选自IIIA3、IIIA7、IIIA11、IIIA12、IIIA25、IIIA29、IIIA31、IIIA37、IIIB18、IIIB22、IIIC2、IIIC4、IIIC15、IIIC20中的一种或多种；More preferably, 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;
特别优选地，通式III所代表的化合物选自IIIA25、IIIA29、IIIA37、IIIB18、IIIB22、IIIC2、IIIC4、IIIC15、IIIC20中的一种或多种；Particularly preferably, 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;
优选的，所述液晶组合物包含10～75％的通式III所代表的化合物；Preferably, the liquid crystal composition contains 10-75% of the compound represented by the general formula III;
更优选地，所述液晶组合物包含20～70％，30～70％，20～50％，30～50％，20～65％ 的通式III所代表的化合物；More preferably, the 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;
特别优选地，所述液晶组合物包含22～62％，42～65％，22～65％，32～47％，32～65％，22～47％的通式III所代表的化合物。Particularly preferably, the liquid crystal composition contains 22 to 62%, 42 to 65%, 22 to 65%, 32 to 47%, 32 to 65%, and 22 to 47% of the compound represented by the general formula III.
作为优选的方案，所述液晶组合物中还包括一种或多种的通式IV所代表的化合物：As a preferred solution, the liquid crystal composition further includes one or more compounds represented by the general formula IV:
Figure PCTCN2020077005-appb-000020
Figure PCTCN2020077005-appb-000020
其中，R 6、R 7各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；A 6各自独立地代表反式1，4-环己基或1，4-亚苯基； Wherein, 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;
优选的，通式IV所代表的化合物选自IVA～IVB中的一种或多种：Preferably, the compound represented by the general formula IV is selected from one or more of IVA-IVB:
Figure PCTCN2020077005-appb-000021
Figure PCTCN2020077005-appb-000021
其中，其中，R 6、R 7各自独立地代表C 1～C 7的直链烷基、直链烷氧基或C 2～C 7的直链烯基。 Among them, 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.
优选地，通式IV所代表的化合物选自IVA1～IVB62中的一种或多种：Preferably, the compound represented by the general formula IV is selected from one or more of IVA1 to IVB62:
Figure PCTCN2020077005-appb-000022
Figure PCTCN2020077005-appb-000022
Figure PCTCN2020077005-appb-000023
Figure PCTCN2020077005-appb-000023
Figure PCTCN2020077005-appb-000024
Figure PCTCN2020077005-appb-000024
Figure PCTCN2020077005-appb-000025
Figure PCTCN2020077005-appb-000025
更优选地，通式IV所代表的化合物选自IVA3、IVA5、IVA8、IVA10、IVA26、IVA31、IVA33、IVA53、IVB3、IVB5、IVB8、IVB10、IVB13、IVB25、IVB30、IVB35中的一种或多种；More preferably, 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
特别优选地，本发明所提供的通式IV的化合物选自IVA3、IVA8、IVA10、IVA26、IVA31、IVA33、IVA53、IVB3、IVB8、IVB13、IVB25、IVB30、IVB35中的一种或多种；Particularly preferably, 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;
优选的，所述液晶组合物包含0～35％的通式IV所代表的化合物；Preferably, the liquid crystal composition contains 0-35% of the compound represented by general formula IV;
更优选地，所述液晶组合物包含0～25％，0～21％，0～20％，1～25％，0～22％，0～18％的通式IV所代表的化合物；More preferably, the liquid crystal composition contains 0-25%, 0-21%, 0-20%, 1-25%, 0-22%, 0-18% of the compound represented by general formula IV;
特别优选地，所述液晶组合物包含3～21％，6～21％，3～18％的通式IV所代表的化合物。Particularly preferably, the liquid crystal composition contains 3-21%, 6-21%, 3-18% of the compound represented by the general formula IV.
作为优选的方案，本发明所述液晶组合物中还包括一种或多种的通式V所代表的化合物：As a preferred solution, the liquid crystal composition of the present invention further includes one or more compounds represented by the general formula V:
Figure PCTCN2020077005-appb-000026
Figure PCTCN2020077005-appb-000026
其中，R 8各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；X 1各自独立地代表F、CF 3、OCF 3；L 1、L 2各自独立地代表H或F；A 7各自独立地代表： Wherein, 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:
Figure PCTCN2020077005-appb-000027
Figure PCTCN2020077005-appb-000027
优选的，通式V所代表的化合物选自VA～VK中的一种或多种：Preferably, the compound represented by the general formula V is selected from one or more of VA to VK:
Figure PCTCN2020077005-appb-000028
Figure PCTCN2020077005-appb-000028
进一步优选的，R 8各自独立地代表C 1～C 7的直链烷基或C 2～C 7的直链烯基；X1各自独立地代表F、CF 3或OCF 3； More preferably, 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 ;
更进一步优选的，R 8各自独立地代表C 1～C 5的直链烷基或C 2～C 5的直链烯基；X1各自独立地代表F、CF 3或OCF 3。 More preferably, 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 .
优选的，所述液晶组合物中还包括一种或多种的通式VI所代表的化合物：Preferably, the liquid crystal composition further includes one or more compounds represented by the general formula VI:
Figure PCTCN2020077005-appb-000029
Figure PCTCN2020077005-appb-000029
其中，R 9、R 10各自独立地代表F、C 1～C 12的直链烷基或C 2～C 12的直链烯基； Wherein, 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;
进一步优选的，通式VI所代表的化合物选自VIA或VIB中的一种或多种：More preferably, the compound represented by the general formula VI is selected from one or more of VIA or VIB:
Figure PCTCN2020077005-appb-000030
Figure PCTCN2020077005-appb-000030
其中，R 9、R 10各自独立地代表C 1～C 7的直链烷基或C 4～C 5的直链烯基； Wherein, 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;
进一步优选地，R 9、R 10各自独立地代表C 1～C 5的直链烷基或C 4～C 5的直链烯基。 More preferably, 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.
本发明所述液晶组合物包括如下质量百分比的组分：The liquid crystal composition of the present invention includes the following components in mass percentage:
(1)、1～35％的通式I所代表的化合物；(1) 1 to 35% of the compound represented by general formula I;
(2)、5～50％的通式II所代表的化合物；(2) 5-50% of the compound represented by general formula II;
(3)、10～75％的通式III所代表的化合物；(3) 10-75% of the compound represented by general formula III;
(4)、0～35％的通式IV所代表的化合物；(4) 0-35% of the compound represented by general formula IV;
(5)、0～50％的通式V～VIII所代表的化合物。(5) 0-50% of the compounds represented by general formulas V to VIII.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、2～30％的通式I所代表的化合物；(1), 2-30% of the compound represented by general formula I;
(2)、8～40％的通式II所代表的化合物；(2) 8-40% of the compound represented by general formula II;
(3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～43％的通式V～VIII所代表的化合物。(5) 0-43% of the compound represented by general formula V-VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
(2)、11～34％的通式II所代表的化合物；(2) 11-34% of the compound represented by general formula II;
(3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
(4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
特别优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、6～24％的通式I所代表的化合物；(1), 6-24% of the compound represented by general formula I;
(2)、11～33％的通式II所代表的化合物；(2) 11-33% of the compound represented by general formula II;
(3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
(4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、2～14％的通式I所代表的化合物；(1), 2-14% of the compound represented by general formula I;
(2)、8～37％的通式II所代表的化合物；(2) 8 to 37% of the compound represented by general formula II;
(3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～42％的通式V～VIII所代表的化合物。(5) 0 to 42% of compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、2～14％的通式I所代表的化合物；(1), 2-14% of the compound represented by general formula I;
(2)、12～34％的通式II所代表的化合物；(2) 12 to 34% of the compound represented by general formula II;
(3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
(4)、0～20％的通式IV所代表的化合物；(4) 0-20% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、10～30％的通式I所代表的化合物；(1) 10-30% of the compound represented by general formula I;
(2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
(3)、30～70％的通式III所代表的化合物；(3) 30-70% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～36％的通式V～VIII所代表的化合物。(5) 0 to 36% of compounds represented by general formulae V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、10～24％的通式I所代表的化合物；(1) 10-24% of the compound represented by general formula I;
(2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
(3)、32～65％的通式III所代表的化合物；(3) 32-65% of the compound represented by general formula III;
(4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
(5)、0～34％的通式V～VIII所代表的化合物。(5) 0 to 34% of the compounds represented by general formulas V to VIII.
上述液晶组合物具有非常大的弹性常数，对于提升液晶显示器的对比度非常有效。The above-mentioned liquid crystal composition has a very large elastic constant and is very effective for improving the contrast of a liquid crystal display.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、5～18％的通式I所代表的化合物；(1) 5-18% of the compound represented by general formula I;
(2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
(3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～40％的通式V～VIII所代表的化合物。(5) 0-40% of the compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、6～16％的通式I所代表的化合物；(1), 6-16% of the compound represented by general formula I;
(2)、11～33％的通式II所代表的化合物；(2) 11-33% of the compound represented by general formula II;
(3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
(4)、0～20％的通式IV所代表的化合物；(4) 0-20% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
上述液晶组合物具有大的弹性常数和优异的低温互溶性，对于改善液晶显示器的对比度以及拓宽液晶显示器的低温工作范围非常有效。The above-mentioned liquid crystal composition has a large elastic constant and excellent low-temperature mutual solubility, and is very effective for improving the contrast of the liquid crystal display and broadening the low-temperature working range of the liquid crystal display.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、2～28％的通式I所代表的化合物；(1), 2-28% of the compound represented by general formula I;
(2)、15～40％的通式II所代表的化合物；(2) 15-40% of the compound represented by general formula II;
(3)、20～50％的通式III所代表的化合物；(3) 20-50% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～40％的通式V～VIII所代表的化合物。(5) 0-40% of the compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
(2)、15～34％的通式II所代表的化合物；(2) 15-34% of the compound represented by general formula II;
(3)、22～47％的通式III所代表的化合物；(3) 22 to 47% of the compound represented by general formula III;
(4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
上述液晶组合物具有大的弹性常数和较大的介电各向异性，对于提升液晶显示器的对比度和降低液晶显示器的驱动电压非常有效。The above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、5～28％的通式I所代表的化合物；(1) 5-28% of the compound represented by general formula I;
(2)、8～21％的通式II所代表的化合物；(2) 8-21% of the compound represented by general formula II;
(3)、30～70％的通式III所代表的化合物；(3) 30-70% of the compound represented by general formula III;
(4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
(5)、0～40％的通式V～VIII所代表的化合物。(5) 0-40% of the compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、6～24％的通式I所代表的化合物；(1), 6-24% of the compound represented by general formula I;
(2)、11～21％的通式II所代表的化合物；(2) 11-21% of the compound represented by general formula II;
(3)、32～65％的通式III所代表的化合物；(3) 32-65% of the compound represented by general formula III;
(4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
(5)、0～34％的通式V～VIII所代表的化合物。(5) 0 to 34% of the compounds represented by general formulas V to VIII.
上述液晶组合物具有大的弹性常数和低的旋转粘度，对于提升液晶显示器的对比度和改善响应时间非常有效。The above-mentioned liquid crystal composition 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.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、2～28％的通式I所代表的化合物；(1), 2-28% of the compound represented by general formula I;
(2)、8～38％的通式II所代表的化合物；(2) 8 to 38% of the compound represented by general formula II;
(3)、30～50％的通式III所代表的化合物；(3) 30-50% of the compound represented by general formula III;
(4)、1～36％的通式V～VIII所代表的化合物。(4) 1-36% of the compounds represented by the general formulae V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
(2)、11～34％的通式II所代表的化合物；(2) 11-34% of the compound represented by general formula II;
(3)、32～47％的通式III所代表的化合物；(3) 32 to 47% of the compound represented by general formula III;
(4)、5～33％的通式V～VIII所代表的化合物。(4) 5 to 33% of the compounds represented by general formulas V to VIII.
上述液晶组合物具有大的弹性常数和较大的介电各向异性，对于提升液晶显示器的对比度和降低液晶显示器的驱动电压非常有效。The above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、5～25％的通式I所代表的化合物；(1) 5-25% of the compound represented by general formula I;
(2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
(3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
(4)、1～25％的通式IV所代表的化合物；(4) 1-25% of the compound represented by general formula IV;
(5)、0～40％的通式V～VIII所代表的化合物。(5) 0-40% of the compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、7～20％的通式I所代表的化合物；(1), 7-20% of the compound represented by general formula I;
(2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
(3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
(4)、3～21％的通式IV所代表的化合物；(4) 3-21% of the compound represented by general formula IV;
(5)、0～37％的通式V～VIII所代表的化合物。(5) 0 to 37% of the compounds represented by general formulas V to VIII.
特别优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、10～20％的通式I所代表的化合物；(1) 10-20% of the compound represented by general formula I;
(2)、12～27％的通式II所代表的化合物；(2) 12-27% of the compound represented by general formula II;
(3)、42～65％的通式III所代表的化合物；(3) 42-65% of the compound represented by general formula III;
(4)、6～21％的通式IV所代表的化合物。(4) 6-21% of the compound represented by general formula IV.
上述液晶组合物具有大的弹性常数和低的旋转粘度，以及具有非常优异的稳定性，对于改善液晶显示器的对比度，提升响应时间非常有效，另外用该液晶组合物生产的液晶显示器具有非常优异的信赖性。The above-mentioned liquid crystal composition has a large elastic constant and low rotational viscosity, and has very excellent stability. It is very effective for improving the contrast of liquid crystal displays and improving the response time. In addition, the liquid crystal display produced by the liquid crystal composition has very excellent Reliability.
特别优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、7～16％的通式I所代表的化合物；(1), 7-16% of the compound represented by general formula I;
(2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
(3)、22～62％的通式III所代表的化合物；(3) 22-62% of the compound represented by general formula III;
(4)、3～18％的通式IV所代表的化合物；(4) 3-18% of the compound represented by general formula IV;
(5)、4～37％的通式V～VIII所代表的化合物。(5) 4 to 37% of the compounds represented by the general formulae V to VIII.
优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition provided by the present invention contains the following components by mass percentage:
(1)、2～26％的通式I所代表的化合物；(1), 2 to 26% of the compound represented by general formula I;
(2)、8～38％的通式II所代表的化合物；(2) 8 to 38% of the compound represented by general formula II;
(3)、20～65％的通式III所代表的化合物；(3) 20-65% of the compound represented by general formula III;
(4)、0～22％的通式IV所代表的化合物；(4) 0-22% of the compound represented by general formula IV;
(5)、1～40％的通式V～VIII所代表的化合物。(5) 1-40% of the compounds represented by general formulas V to VIII.
更优选地，本发明所提供的液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition provided by the present invention contains the following components in mass percentage:
(1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
(2)、11～34的通式II所代表的化合物；(2) Compounds represented by general formula II from 11 to 34;
(3)、22～62％的通式III所代表的化合物；(3) 22-62% of the compound represented by general formula III;
(4)、0～18％的通式IV所代表的化合物；(4) 0-18% of the compound represented by general formula IV;
(5)、4～37％的通式V～VIII所代表的化合物。(5) 4 to 37% of the compounds represented by the general formulae V to VIII.
上述液晶组合物具有大的弹性常数和较大的介电各向异性，对于提升液晶显示器的对比度和降低液晶显示器的驱动电压非常有效。The above-mentioned liquid crystal composition has a large elastic constant and a large dielectric anisotropy, and is very effective for improving the contrast of the liquid crystal display and reducing the driving voltage of the liquid crystal display.
本发明所述液晶组合物的制备方法无特殊限制，可采用常规方法将两种或多种化合物混合进行生产，如通过在高温下混合不同组分并彼此溶解的方法制备，其中，将液晶组合物溶解在用于该化合物的溶剂中并混合，然后在减压下蒸馏出该溶剂；或者本发明所述液晶组合物可按照常规的方法制备，如将其中含量较小的组分在较高的温度下溶解在含量较大的主要组分中，或将各所属组分在有机溶剂中溶解，如丙酮、氯仿或甲醇等，然后将溶液混合去除溶剂后得到。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.
本发明的另一目是保护本发明所述的的液晶组合物在LCD显示器中的应用；Another objective of the present invention is to protect the application of the liquid crystal composition of the present invention in LCD displays;
优选在IPS或FFS模式显示器中的应用。It is preferably used in IPS or FFS mode displays.
本发明具有如下有益效果：The present invention has the following beneficial effects:
本发明通过添加通式I所代表的化合物增加液晶组合物的弹性常数，通过增加通式II类化合物提升液晶组合物的介电各向异性，增加通式III的化合物降低旋转粘度；本发明研究人员发现，通式I所代表的化合物具有非常大的弹性常数，同时在旋转粘度方面较低，能够起到提升液晶组合物弹性常数的同时维持旋转粘度不变，进而满足液晶显示器要求的高对比度和快速响应的目的。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.
具体实施方式Detailed ways
以下实施例用于说明本发明，但不用来限制本发明的范围。The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.
除非另有说明，本发明中百分比为重量百分比；温度单位为摄氏度；△n代表光学各向异性(25℃)；ε ∥和ε ⊥分别代表平行和垂直介电常数(25℃，1000Hz)；△ε代表介电各向异性(25℃，1000Hz)；γ1代表旋转粘度(mPa.s，25℃)；Cp代表液晶组合物的清亮点(℃)；K 11、K 22、K 33分别代表展曲、扭曲和弯曲弹性常数(pN，25℃)；Kavg代表平均弹性常数((K 11+K 22+K 33)/3，pN，25℃) Unless otherwise specified, percentages in the present invention are weight percentages; temperature units are degrees Celsius; △n represents optical anisotropy (25°C); ε ∥ and ε ⊥ represent parallel and perpendicular dielectric constants (25°C, 1000 Hz) respectively; △ε represents the dielectric anisotropy (25℃, 1000Hz); γ1 represents the rotational viscosity (mPa.s, 25℃); Cp represents the clearing point (℃) of the liquid crystal composition; K 11 , K 22 , and K 33 represent respectively Spreading, twisting and bending elastic constant (pN, 25℃); Kavg represents the average elastic constant ((K 11 +K 22 +K 33 )/3, pN, 25℃)
以下各实施例中，液晶组合物中基团结构用表1所示代码表示。In the following examples, the group structure in the liquid crystal composition is represented by the code shown in Table 1.
表1：液晶组合物的基团结构代码Table 1: Group structure codes of liquid crystal compositions
Figure PCTCN2020077005-appb-000031
Figure PCTCN2020077005-appb-000031
Figure PCTCN2020077005-appb-000032
Figure PCTCN2020077005-appb-000032
以如下化合物结构为例：Take the following compound structure as an example:
Figure PCTCN2020077005-appb-000033
Figure PCTCN2020077005-appb-000033
表示为：4CDUQKFExpressed as: 4CDUQKF
Figure PCTCN2020077005-appb-000034
Figure PCTCN2020077005-appb-000034
表示为：5CCPUFExpressed as: 5CCPUF
以下各实施例中，液晶组合物的制备均采用热溶解方法，包括以下步骤：用天平按重量百分比称量液晶组合物，其中称量加入顺序无特定要求，通常以液晶组合物熔点由高到低的顺序依次称量混合，在60～100℃下加热搅拌使得各组分熔解均匀，再经过滤、旋蒸，最后封装即得目标样品。In the following embodiments, the liquid crystal composition is prepared by the thermal dissolution method, which includes the following steps: weigh the liquid crystal composition by weight percentage with a balance, wherein the order of weighing and addition is not specified, and the melting point of the liquid crystal composition is usually from high to Weigh and mix in low order, heat and stir at 60-100°C to make the components melt uniformly, then filter, rotate and steam, and finally encapsulate to obtain the target sample.
以下各实施例中，液晶组合物中各组分的重量百分比及液晶组合物的性能参数见下述表格。In the following examples, the weight percentage of each component in the liquid crystal composition and the performance parameters of the liquid crystal composition are shown in the following table.
实施例1Example 1
表2：液晶组合物中各组分的重量百分比及性能参数Table 2: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000035
Figure PCTCN2020077005-appb-000035
实施例2Example 2
表3：液晶组合物中各组分的重量百分比及性能参数Table 3: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000036
Figure PCTCN2020077005-appb-000036
实施例3Example 3
表4：液晶组合物中各组分的重量百分比及性能参数Table 4: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000037
Figure PCTCN2020077005-appb-000037
实施例4Example 4
表5：液晶组合物中各组分的重量百分比及性能参数Table 5: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000038
Figure PCTCN2020077005-appb-000038
实施例5Example 5
表6：液晶组合物中各组分的重量百分比及性能参数Table 6: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000039
Figure PCTCN2020077005-appb-000039
实施例6Example 6
表7：液晶组合物中各组分的重量百分比及性能参数Table 7: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000040
Figure PCTCN2020077005-appb-000040
实施例7Example 7
表8：液晶组合物中各组分的重量百分比及性能参数Table 8: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000041
Figure PCTCN2020077005-appb-000041
实施例8Example 8
表9：液晶组合物中各组分的重量百分比及性能参数Table 9: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000042
Figure PCTCN2020077005-appb-000042
Figure PCTCN2020077005-appb-000043
Figure PCTCN2020077005-appb-000043
实施例9Example 9
表10：液晶组合物中各组分的重量百分比及性能参数Table 10: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000044
Figure PCTCN2020077005-appb-000044
实施例10Example 10
表11：液晶组合物中各组分的重量百分比及性能参数Table 11: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000045
Figure PCTCN2020077005-appb-000045
实施例11Example 11
表12：液晶组合物中各组分的重量百分比及性能参数Table 12: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000046
Figure PCTCN2020077005-appb-000046
Figure PCTCN2020077005-appb-000047
Figure PCTCN2020077005-appb-000047
实施例12Example 12
表13：液晶组合物中各组分的重量百分比及性能参数Table 13: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000048
Figure PCTCN2020077005-appb-000048
实施例13Example 13
表14：液晶组合物中各组分的重量百分比及性能参数Table 14: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000049
Figure PCTCN2020077005-appb-000049
实施例14Example 14
表15：液晶组合物中各组分的重量百分比及性能参数Table 15: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000050
Figure PCTCN2020077005-appb-000050
Figure PCTCN2020077005-appb-000051
Figure PCTCN2020077005-appb-000051
实施例15Example 15
表16：液晶组合物中各组分的重量百分比及性能参数Table 16: The weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000052
Figure PCTCN2020077005-appb-000052
实施例16Example 16
表17：液晶组合物中各组分的重量百分比及性能参数Table 17: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000053
Figure PCTCN2020077005-appb-000053
实施例17Example 17
表18：液晶组合物中各组分的重量百分比及性能参数Table 18: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000054
Figure PCTCN2020077005-appb-000054
实施例18Example 18
表19：液晶组合物中各组分的重量百分比及性能参数Table 19: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000055
Figure PCTCN2020077005-appb-000055
实施例19Example 19
表20：液晶组合物中各组分的重量百分比及性能参数Table 20: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000056
Figure PCTCN2020077005-appb-000056
实施例20Example 20
表21：液晶组合物中各组分的重量百分比及性能参数Table 21: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000057
Figure PCTCN2020077005-appb-000057
Figure PCTCN2020077005-appb-000058
Figure PCTCN2020077005-appb-000058
实施例21Example 21
表22：液晶组合物中各组分的重量百分比及性能参数Table 22: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000059
Figure PCTCN2020077005-appb-000059
实施例22Example 22
表23：液晶组合物中各组分的重量百分比及性能参数Table 23: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000060
Figure PCTCN2020077005-appb-000060
实施例23Example 23
表24：液晶组合物中各组分的重量百分比及性能参数Table 24: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000061
Figure PCTCN2020077005-appb-000061
Figure PCTCN2020077005-appb-000062
Figure PCTCN2020077005-appb-000062
实施例24Example 24
表25：液晶组合物中各组分的重量百分比及性能参数Table 25: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000063
Figure PCTCN2020077005-appb-000063
实施例25Example 25
表26：液晶组合物中各组分的重量百分比及性能参数Table 26: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000064
Figure PCTCN2020077005-appb-000064
Figure PCTCN2020077005-appb-000065
Figure PCTCN2020077005-appb-000065
实施例26Example 26
表27：液晶组合物中各组分的重量百分比及性能参数Table 27: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000066
Figure PCTCN2020077005-appb-000066
实施例27Example 27
表28：液晶组合物中各组分的重量百分比及性能参数Table 28: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000067
Figure PCTCN2020077005-appb-000067
实施例28Example 28
表29：液晶组合物中各组分的重量百分比及性能参数Table 29: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000068
Figure PCTCN2020077005-appb-000068
Figure PCTCN2020077005-appb-000069
Figure PCTCN2020077005-appb-000069
实施例29Example 29
表30：液晶组合物中各组分的重量百分比及性能参数Table 30: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000070
Figure PCTCN2020077005-appb-000070
实施例30Example 30
表31：液晶组合物中各组分的重量百分比及性能参数Table 31: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000071
Figure PCTCN2020077005-appb-000071
实施例31Example 31
表32：液晶组合物中各组分的重量百分比及性能参数Table 32: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000072
Figure PCTCN2020077005-appb-000072
Figure PCTCN2020077005-appb-000073
Figure PCTCN2020077005-appb-000073
实施例32Example 32
表33：液晶组合物中各组分的重量百分比及性能参数Table 33: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000074
Figure PCTCN2020077005-appb-000074
实施例33Example 33
表34：液晶组合物中各组分的重量百分比及性能参数Table 34: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000075
Figure PCTCN2020077005-appb-000075
实施例34Example 34
表35：液晶组合物中各组分的重量百分比及性能参数Table 35: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000076
Figure PCTCN2020077005-appb-000076
Figure PCTCN2020077005-appb-000077
Figure PCTCN2020077005-appb-000077
实施例35Example 35
表36：液晶组合物中各组分的重量百分比及性能参数Table 36: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000078
Figure PCTCN2020077005-appb-000078
实施例36Example 36
表37：液晶组合物中各组分的重量百分比及性能参数Table 37: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000079
Figure PCTCN2020077005-appb-000079
实施例37Example 37
表38：液晶组合物中各组分的重量百分比及性能参数Table 38: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000080
Figure PCTCN2020077005-appb-000080
Figure PCTCN2020077005-appb-000081
Figure PCTCN2020077005-appb-000081
实施例38Example 38
表39：液晶组合物中各组分的重量百分比及性能参数Table 39: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000082
Figure PCTCN2020077005-appb-000082
实施例39Example 39
表40：液晶组合物中各组分的重量百分比及性能参数Table 40: Weight percentages and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000083
Figure PCTCN2020077005-appb-000083
实施例40Example 40
表41：液晶组合物中各组分的重量百分比及性能参数Table 41: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000084
Figure PCTCN2020077005-appb-000084
Figure PCTCN2020077005-appb-000085
Figure PCTCN2020077005-appb-000085
实施例41Example 41
表42：液晶组合物中各组分的重量百分比及性能参数Table 42: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000086
Figure PCTCN2020077005-appb-000086
对比例1Comparative example 1
表43：液晶组合物中各组分的重量百分比及性能参数Table 43: Weight percentage and performance parameters of each component in the liquid crystal composition
Figure PCTCN2020077005-appb-000087
Figure PCTCN2020077005-appb-000087
将实施例1与对比例1所得液晶组合物的各性能参数值进行汇总比较，参见表44。The performance parameter values of the liquid crystal compositions obtained in Example 1 and Comparative Example 1 are summarized and compared, see Table 44.
表44：液晶组合物的性能参数比较Table 44: Comparison of performance parameters of liquid crystal compositions
 To △n△n △ε△ε CpCp γ1γ1 K11K11 K22K22 K33K33 KavgKavg
实施例1Example 1 0.1140.114 +7.3+7.3 9797 6969 16.616.6 8.38.3 18.818.8 14.614.6
对比例1Comparative example 1 0.1090.109 +7.2+7.2 9797 6969 14.214.2 7.17.1 15.515.5 12.312.3
经比较可知：与对比例1相比，实施例1提供的液晶组合物具有更大的弹性常数， 实施例1的弹性常数提升20％左右，即用于液晶显示器中可以增加20％左右的对比度。It can be seen from comparison that the liquid crystal composition provided in Example 1 has a larger elastic constant compared with Comparative Example 1, and the elastic constant of Example 1 is increased by about 20%, that is, it can increase the contrast of about 20% when used in a liquid crystal display. .
由以上实施例可知，本发明所提供的液晶组合物具有大的弹性常数，用于IPS和FFS模式显示器中可有效改善液晶显示器的对比度。因此，本发明所提供的液晶组合物适用于的IPS或FFS型TFT液晶显示装置，能够改善液晶显示器暗态漏光问题，能够明显提升液晶显示器的对比度，能够改善IPS或FFS模式液晶显示器的对比度特性。It can be seen from the above embodiments that 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 improve the dark state light leakage problem of the liquid crystal display, can significantly improve the contrast of the liquid crystal display, and can improve the contrast characteristics of the IPS or FFS mode liquid crystal display .
虽然，上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对领域技术人员而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。Although the general description and specific embodiments have been used to describe the present invention in detail above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of the present invention.
工业实用性Industrial applicability
本发明提供一种含有2-甲基-3,4,5三氟苯结构的液晶组合物。本发明所述组合物中包括一种或多种通式I所代表的化合物：The present invention provides a liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene structure. The composition of the present invention includes one or more compounds represented by the general formula I:
Figure PCTCN2020077005-appb-000088
Figure PCTCN2020077005-appb-000088
通式II所述化合物：The compound of general formula II:
Figure PCTCN2020077005-appb-000089
Figure PCTCN2020077005-appb-000089
和通式III所述化合物：And the compound of general formula III:
Figure PCTCN2020077005-appb-000090
Figure PCTCN2020077005-appb-000090
本发明通过添加通式I所代表的化合物增加液晶组合物的弹性常数，通过增加通式II类化合物提升液晶组合物的介电各向异性，增加通式III的化合物降低旋转粘度；本发明发现，通式I所代表的化合物具有非常大的弹性常数，同时在旋转粘度方面较低，能够起到提升液晶组合物弹性常数的同时维持旋转粘度不变，进而满足液晶显示器要求的高对比度和快速响应的目的，具有较好的经济价值和应用前景。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 present invention finds The compound represented by the general formula I has a very large elastic constant and a low rotational viscosity. It can improve the elastic constant of the liquid crystal composition while maintaining the rotational viscosity unchanged, thereby meeting the high contrast and fast speed requirements of liquid crystal displays. The purpose of the response has good economic value and application prospects.

Claims (10)

  1. 一种含有2-甲基-3,4,5三氟苯结构的液晶组合物，其特征在于，所述液晶组合物中包括一种或多种通式I所代表的化合物：A liquid crystal composition containing 2-methyl-3,4,5 trifluorobenzene structure, characterized in that the liquid crystal composition includes one or more compounds represented by general formula I:
    Figure PCTCN2020077005-appb-100001
    Figure PCTCN2020077005-appb-100001
    其中，R 1、R 2各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基； Wherein, 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;
    所述液晶组合物至少包含一种通式II所代表的化合物：The liquid crystal composition includes at least one compound represented by the general formula II:
    Figure PCTCN2020077005-appb-100002
    Figure PCTCN2020077005-appb-100002
    其中，R 3各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；n 1＝0或1；A 1各自独立地代表： Wherein, R 3 each independently represents a C 1 ～C 12 linear alkyl group, a linear alkoxy group or a C 2 ～C 12 linear alkenyl group; n 1 =0 or 1; A 1 each independently represents:
    Figure PCTCN2020077005-appb-100003
    Figure PCTCN2020077005-appb-100003
    A2各自独立地代表：A2 each independently represents:
    Figure PCTCN2020077005-appb-100004
    Figure PCTCN2020077005-appb-100004
    A3各自独立地代表：A3 each independently represents:
    Figure PCTCN2020077005-appb-100005
    Figure PCTCN2020077005-appb-100005
    所述液晶组合物中至少包含一种通式III所代表的化合物：The liquid crystal composition contains at least one compound represented by the general formula III:
    Figure PCTCN2020077005-appb-100006
    Figure PCTCN2020077005-appb-100006
    其中，R 4、R 5各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基，A 4、A 5各自独立地代表反式1，4-环己基或1，4-亚苯基。 Wherein, 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.
  2. 根据权利要求1所述的液晶组合物，其特征在于，通式I所代表的化合物选自IA～IB中的一种或多种：The liquid crystal composition according to claim 1, wherein the compound represented by the general formula I is selected from one or more of IA to IB:
    Figure PCTCN2020077005-appb-100007
    Figure PCTCN2020077005-appb-100007
    其中，R 1、R 2各自独立地代表C 1～C 7的直链烷基或C 2～C 7的直链烯基； Wherein, 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;
    优选地，通式I所代表的化合物选自式IA1～IB45中的一种或多种：Preferably, the compound represented by the general formula I is selected from one or more of the formulas IA1 to IB45:
    Figure PCTCN2020077005-appb-100008
    Figure PCTCN2020077005-appb-100008
    Figure PCTCN2020077005-appb-100009
    Figure PCTCN2020077005-appb-100009
    Figure PCTCN2020077005-appb-100010
    Figure PCTCN2020077005-appb-100010
    Figure PCTCN2020077005-appb-100011
    Figure PCTCN2020077005-appb-100011
    更优选地，通式I所述化合物选自IA3、IA12、IA21、IA23、IA24、IA25、IA39、IA43、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；特别优选地，通式I所述化合物选自IA3、IA21、IA23、IA24、IA25、IA39、IA43、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；最优选地，通式I所述化合物选自IA3、IA21、IA23、IA39、IB3、IB5、IB8、IB10、IB26、IB27、IB30、IB31中的一种或多种；More preferably, 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 Particularly preferably, 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; Most preferably, the compound of formula I is selected from one or more of IA3, IA21, IA23, IA39, IB3, IB5, IB8, IB10, IB26, IB27, IB30, IB31;
    和/或，所述液晶组合物包含质量百分比为1～35％的通式I的化合物；优选质量百分比为2～30％，2～14％，10～30％，5～18％，2～28％，5～28％，5～25％或2～26％的通式I的化合物；更优选质量百分比为2～24％，7～20％，7～16％，6～24％，6～16％，10～24％或2～14％的通式I所代表的化合物。And/or, the liquid crystal composition contains the compound of formula I in a mass percentage of 1 to 35%; preferably, the mass percentage is 2 to 30%, 2 to 14%, 10 to 30%, 5 to 18%, 2 to 28%, 5 to 28%, 5 to 25% or 2 to 26% of the compound of general formula I; more preferably the mass percentage is 2 to 24%, 7 to 20%, 7 to 16%, 6 to 24%, 6 -16%, 10-24% or 2-14% of the compound represented by general formula I.
  3. 根据权利要求1或2所述的化合物，其特征在于，所述通式II所代表的化合物选自IIA～IIM中的一种或多种：The compound according to claim 1 or 2, wherein the compound represented by the general formula II is selected from one or more of IIA to IIM:
    Figure PCTCN2020077005-appb-100012
    Figure PCTCN2020077005-appb-100012
    Figure PCTCN2020077005-appb-100013
    Figure PCTCN2020077005-appb-100013
    优选地，通式II所代表的化合物选自式IIA1～IIM5中的一种或多种：Preferably, the compound represented by the general formula II is selected from one or more of the formulas IIA1 to IIM5:
    Figure PCTCN2020077005-appb-100014
    Figure PCTCN2020077005-appb-100014
    Figure PCTCN2020077005-appb-100015
    Figure PCTCN2020077005-appb-100015
    Figure PCTCN2020077005-appb-100016
    Figure PCTCN2020077005-appb-100016
    更优选地，通式II的化合物选自式IIA3、IIB2、IIB3、IIC2、IIC3、IID2、IID3、IIF3、IIG3、IIG4、IIH3、IIH4、IIH5、IIJ3、IIK2、IIK3、IIL3、IIM3、IIM4中的一种或多种；特别优选地，通式II的化合物选自式IIB3、IIC2、IIC3、IID3、IIF3、IIG3、IIG4、IIH3、IIH4、IIH5、IIK3、IIL3、IIM3、IIM4中的一种或多种；最优选地，通式II的化合物选自式IIB3、IIC2、IIC3、IID3、IIG3、IIG4、IIH3、IIH4、IIH5、IIL3、IIM3、IIM4中的一种或多种；More preferably, 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 Particularly preferably, the compound of formula II is selected from one of formula IIB3, IIC2, IIC3, IID3, IIF3, IIG3, IIG4, IIH3, IIH4, IIH5, IIK3, IIL3, IIM3, IIM4 Or more; most preferably, the compound of general formula II is selected from one or more of formula IIB3, IIC2, IIC3, IID3, IIG3, IIG4, IIH3, IIH4, IIH5, IIL3, IIM3, IIM4;
    和/或，所述液晶组合物包含5～50％的通式II所代表的化合物；更优选地，所述液晶组合物包含8～37％，8～40％，8～35％，15～40％，8～21％，8～38％的通式II所代表的化合物；特别优选地，所述液晶组合物包含11～34％，11～30％，12～27％，11～30％，11～34％，11～21％，15～34％，11～33％，12～34％的通式II所代表的化合物。And/or, the liquid crystal composition contains 5-50% of the compound represented by the general formula II; more preferably, the liquid crystal composition contains 8-37%, 8-40%, 8-35%, 15- 40%, 8-21%, 8-38% of the compound represented by general formula II; particularly preferably, the liquid crystal composition contains 11-34%, 11-30%, 12-27%, 11-30% , 11 to 34%, 11 to 21%, 15 to 34%, 11 to 33%, 12 to 34% of the compound represented by general formula II.
  4. 根据权利要求1～3任一项所述的液晶组合物，其特征在于，通式III所代表的化合物选自式IIIA～IIIC中的一种或多种：The liquid crystal composition according to any one of claims 1 to 3, wherein the compound represented by the general formula III is selected from one or more of the formulas IIIA to IIIC:
    Figure PCTCN2020077005-appb-100017
    Figure PCTCN2020077005-appb-100017
    其中，R 4各自独立地代表C 1～C 7的直链烷基；R 5各自独立地代表C 1～C 7的直链烷基、直链烷氧基或C 2～C 7的直链烯基； Wherein, 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
    优选地，通式III所代表的化合物选自式IIIA1～IIIC24中的一种或多种：Preferably, the compound represented by the general formula III is selected from one or more of the formulas IIIA1 to IIIC24:
    Figure PCTCN2020077005-appb-100018
    Figure PCTCN2020077005-appb-100018
    Figure PCTCN2020077005-appb-100019
    Figure PCTCN2020077005-appb-100019
    更优选地，通式III所代表的化合物选自IIIA3、IIIA7、IIIA11、IIIA12、IIIA25、IIIA29、IIIA31、IIIA37、IIIB18、IIIB22、IIIC2、IIIC4、IIIC15、IIIC20中的一种或多种；特别优选地，通式III所代表的化合物选自IIIA25、IIIA29、IIIA37、IIIB18、IIIB22、IIIC2、IIIC4、IIIC15、IIIC20中的一种或多种；More preferably, 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; particularly preferred Specifically, 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;
    和/或，所述液晶组合物包含10～75％的通式III所代表的化合物；更优选地，所述液晶组合物包含20～70％，30～70％，20～50％，30～50％，20～65％的通式III所代表的化合物；特别优选地，所述液晶组合物包含22～62％，42～65％，22～65％，32～47％，32～65％，22～47％的通式III所代表的化合物。And/or, the liquid crystal composition contains 10 to 75% of the compound represented by the general formula III; more preferably, the liquid crystal composition contains 20 to 70%, 30 to 70%, 20 to 50%, 30 to 50%, 20 to 65% of the compound represented by the general formula III; particularly preferably, the 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.
  5. 根据权利要求1～4任一项所述的液晶组合物，其特征在于，所述液晶组合物中还包括一种或多种的通式IV所代表的化合物：The liquid crystal composition according to any one of claims 1 to 4, wherein the liquid crystal composition further comprises one or more compounds represented by the general formula IV:
    Figure PCTCN2020077005-appb-100020
    Figure PCTCN2020077005-appb-100020
    其中，R 6、R 7各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；A 6各自独立地代表反式1，4-环己基或1，4-亚苯基； Wherein, 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;
    优选的，通式IV所代表的化合物选自IVA～IVB中的一种或两种：Preferably, the compound represented by the general formula IV is selected from one or two of IVA-IVB:
    Figure PCTCN2020077005-appb-100021
    Figure PCTCN2020077005-appb-100021
    其中，其中，R 6、R 7各自独立地代表C 1～C 7的直链烷基、直链烷氧基或C 2～C 7的直链烯基； Wherein, 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;
    优选地，通式IV所代表的化合物选自IVA1～IVB62中的一种或多种：Preferably, the compound represented by the general formula IV is selected from one or more of IVA1 to IVB62:
    Figure PCTCN2020077005-appb-100022
    Figure PCTCN2020077005-appb-100022
    Figure PCTCN2020077005-appb-100023
    Figure PCTCN2020077005-appb-100023
    Figure PCTCN2020077005-appb-100024
    Figure PCTCN2020077005-appb-100024
    Figure PCTCN2020077005-appb-100025
    Figure PCTCN2020077005-appb-100025
    更优选地，通式IV所代表的化合物选自IVA3、IVA5、IVA8、IVA10、IVA26、IVA31、IVA33、IVA53、IVB3、IVB5、IVB8、IVB10、IVB13、IVB25、IVB30、IVB35中的一种或多种；特别优选地，本发明所提供的通式IV的化合物选自IVA3、IVA8、IVA10、IVA26、IVA31、IVA33、IVA53、IVB3、IVB8、IVB13、IVB25、IVB30、IVB35中的一种或多种；More preferably, 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 Particularly preferably, the compound of 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 ；
    和/或，所述液晶组合物包含0～35％的通式IV所代表的化合物；更优选地，所述液晶组合物包含0～25％，0～21％，0～20％，1～25％，0～22％，0～18％的通式IV所代表的化合物；特别优选地，所述液晶组合物包含3～21％，6～21％，3～18％的通式IV所代表的化合物。And/or, the liquid crystal composition contains 0 to 35% of the compound represented by the general formula IV; more preferably, the liquid crystal composition contains 0 to 25%, 0 to 21%, 0 to 20%, 1 to 25%, 0-22%, 0-18% of the compound represented by the general formula IV; particularly preferably, the liquid crystal composition contains 3-21%, 6-21%, 3-18% of the compound represented by the general formula IV Representative compound.
  6. 根据权利要求1～5任一项所述的正性液晶组合物，其特征在于，所述正性液晶组合物中还包括一种或多种的通式V所代表的化合物：The positive liquid crystal composition according to any one of claims 1 to 5, wherein the positive liquid crystal composition further comprises one or more compounds represented by the general formula V:
    Figure PCTCN2020077005-appb-100026
    Figure PCTCN2020077005-appb-100026
    其中，R 8各自独立地代表C 1～C 12的直链烷基、直链烷氧基或C 2～C 12的直链烯基；X 1各自独立地代表F、CF 3、OCF 3；L 1、L 2各自独立地代表H或F；A 7各自独立地代表： Wherein, 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:
    Figure PCTCN2020077005-appb-100027
    Figure PCTCN2020077005-appb-100027
    优选的，通式V所代表的化合物选自VA～VK中的一种或多种：Preferably, the compound represented by the general formula V is selected from one or more of VA to VK:
    Figure PCTCN2020077005-appb-100028
    Figure PCTCN2020077005-appb-100028
    进一步优选的，R 8各自独立地代表C 1～C 7的直链烷基或C 2～C 7的直链烯基；X 1各自独立地代表F、CF 3或OCF 3； More preferably, R 8 each independently represents a C 1 -C 7 linear alkyl group or a C 2 -C 7 linear alkenyl group; X 1 each independently represents F, CF 3 or OCF 3 ;
    更进一步优选的，R 8各自独立地代表C 1～C 5的直链烷基或C 2～C 5的直链烯基；X 1各自独立地代表F、CF 3或OCF 3。 More preferably, R 8 each independently represents a C 1 to C 5 linear alkyl group or a C 2 to C 5 linear alkenyl group; X 1 each independently represents F, CF 3 or OCF 3 .
  7. 根据权利要求1～6任一项所述的液晶组合物，其特征在于，所述液晶组合物中还包括一种或多种的通式VI所代表的化合物：The liquid crystal composition according to any one of claims 1 to 6, wherein the liquid crystal composition further comprises one or more compounds represented by the general formula VI:
    Figure PCTCN2020077005-appb-100029
    Figure PCTCN2020077005-appb-100029
    其中，R 9、R 10各自独立地代表F、C 1～C 12的直链烷基或C 2～C 12的直链烯基； Wherein, 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;
    优选的，通式VI所代表的化合物选自VIA或VIB中的一种或多种：Preferably, the compound represented by the general formula VI is selected from one or more of VIA or VIB:
    Figure PCTCN2020077005-appb-100030
    Figure PCTCN2020077005-appb-100030
    其中，R 9、R 10各自独立地代表C 1～C 7的直链烷基或C 4～C 5的直链烯基； Wherein, 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;
    进一步优选地，R 9、R 10各自独立地代表C 1～C 5的直链烷基或C 4～C 5的直链烯基。 More preferably, 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.
  8. 根据权利要求1～7任一项所述的液晶组合物，其特征在于，所述液晶组合物还包括一种通式VII或通式VIII所代表的化合物：The liquid crystal composition according to any one of claims 1 to 7, wherein the liquid crystal composition further comprises a compound represented by general formula VII or general formula VIII:
    Figure PCTCN2020077005-appb-100031
    Figure PCTCN2020077005-appb-100031
    其中，R 11、R 12、R 13各自独立地代表C 1～C 12的直链烷基；L 3、L 4、L 5各自独立地代表H或F；X2各自独立地代表F、CF 3、OCF 3； Wherein, R 11 , R 12 , and R 13 each independently represent a C 1 ～C 12 linear alkyl group; L 3 , L 4 , and L 5 each independently represent H or F; X2 each independently represents F, CF 3 , OCF 3 ;
    优选的，通式VII所代表的化合物选自VIIA或VIIB所代表的化合物：Preferably, the compound represented by general formula VII is selected from compounds represented by VIIA or VIIB:
    Figure PCTCN2020077005-appb-100032
    Figure PCTCN2020077005-appb-100032
    R 11、R 12各自独立地代表C 1～C 5的直链烷基； R 11 and R 12 each independently represent a C 1 -C 5 linear alkyl group;
    进一步优选的，通式VIII所代表的化合物选自VIIIA～VIIIJ中的一种或多种：More preferably, the compound represented by the general formula VIII is selected from one or more of VIIIA to VIIIJ:
    Figure PCTCN2020077005-appb-100033
    Figure PCTCN2020077005-appb-100033
    Figure PCTCN2020077005-appb-100034
    Figure PCTCN2020077005-appb-100034
    其中，R 13各自独立地代表C 1～C 7的直链烷基； Wherein, R 13 each independently represents a C 1 -C 7 linear alkyl group;
    优选地，R 13各自独立地代表C 1～C 5的直链烷基。 Preferably, R 13 each independently represents a C 1 to C 5 linear alkyl group.
  9. 根据权利要求1～8任一项所述的液晶组合物，其特征在于，包括如下质量百分比的组分：8. The liquid crystal composition according to any one of claims 1 to 8, characterized in that it comprises the following components in mass percentage:
    (1)、1～35％的通式I所代表的化合物；(1) 1 to 35% of the compound represented by general formula I;
    (2)、5～50％的通式II所代表的化合物；(2) 5-50% of the compound represented by general formula II;
    (3)、10～75％的通式III所代表的化合物；(3) 10-75% of the compound represented by general formula III;
    (4)、0～35％的通式IV所代表的化合物；(4) 0-35% of the compound represented by general formula IV;
    (5)、0～50％的通式V～VIII所代表的化合物；(5) 0-50% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～30％的通式I所代表的化合物；(1), 2-30% of the compound represented by general formula I;
    (2)、8～40％的通式II所代表的化合物；(2) 8-40% of the compound represented by general formula II;
    (3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～43％的通式V～VIII所代表的化合物；(5) 0-43% of the compounds represented by the general formulae V-VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
    (2)、11～34％的通式II所代表的化合物；(2) 11-34% of the compound represented by general formula II;
    (3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
    (4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    特别优选地，所述液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition contains the following components in mass percentage:
    (1)、6～24％的通式I所代表的化合物；(1), 6-24% of the compound represented by general formula I;
    (2)、11～33％的通式II所代表的化合物；(2) 11-33% of the compound represented by general formula II;
    (3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
    (4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～14％的通式I所代表的化合物；(1), 2-14% of the compound represented by general formula I;
    (2)、8～37％的通式II所代表的化合物；(2) 8 to 37% of the compound represented by general formula II;
    (3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～42％的通式V～VIII所代表的化合物；(5) 0 to 42% of the compounds represented by general formulas V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～14％的通式I所代表的化合物；(1), 2-14% of the compound represented by general formula I;
    (2)、12～34％的通式II所代表的化合物；(2) 12 to 34% of the compound represented by general formula II;
    (3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
    (4)、0～20％的通式IV所代表的化合物；(4) 0-20% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、10～30％的通式I所代表的化合物；(1) 10-30% of the compound represented by general formula I;
    (2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
    (3)、30～70％的通式III所代表的化合物；(3) 30-70% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～36％的通式V～VIII所代表的化合物；(5) 0 to 36% of the compounds represented by general formulas V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、10～24％的通式I所代表的化合物；(1) 10-24% of the compound represented by general formula I;
    (2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
    (3)、32～65％的通式III所代表的化合物；(3) 32-65% of the compound represented by general formula III;
    (4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
    (5)、0～34％的通式V～VIII所代表的化合物；(5) 0 to 34% of the compounds represented by general formula V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、5～18％的通式I所代表的化合物；(1) 5-18% of the compound represented by general formula I;
    (2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
    (3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～40％的通式V～VIII所代表的化合物；(5) 0-40% of the compounds represented by the general formulae V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、6～16％的通式I所代表的化合物；(1), 6-16% of the compound represented by general formula I;
    (2)、11～33％的通式II所代表的化合物；(2) 11-33% of the compound represented by general formula II;
    (3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
    (4)、0～20％的通式IV所代表的化合物；(4) 0-20% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～28％的通式I所代表的化合物；(1), 2-28% of the compound represented by general formula I;
    (2)、15～40％的通式II所代表的化合物；(2) 15-40% of the compound represented by general formula II;
    (3)、20～50％的通式III所代表的化合物；(3) 20-50% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～40％的通式V～VIII所代表的化合物；(5) 0-40% of the compounds represented by the general formulae V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
    (2)、15～34％的通式II所代表的化合物；(2) 15-34% of the compound represented by general formula II;
    (3)、22～47％的通式III所代表的化合物；(3) 22 to 47% of the compound represented by general formula III;
    (4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、5～28％的通式I所代表的化合物；(1) 5-28% of the compound represented by general formula I;
    (2)、8～21％的通式II所代表的化合物；(2) 8-21% of the compound represented by general formula II;
    (3)、30～70％的通式III所代表的化合物；(3) 30-70% of the compound represented by general formula III;
    (4)、0～25％的通式IV所代表的化合物；(4) 0-25% of the compound represented by general formula IV;
    (5)、0～40％的通式V～VIII所代表的化合物；(5) 0-40% of the compounds represented by the general formulae V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、6～24％的通式I所代表的化合物；(1), 6-24% of the compound represented by general formula I;
    (2)、11～21％的通式II所代表的化合物；(2) 11-21% of the compound represented by general formula II;
    (3)、32～65％的通式III所代表的化合物；(3) 32-65% of the compound represented by general formula III;
    (4)、0～21％的通式IV所代表的化合物；(4) 0-21% of the compound represented by general formula IV;
    (5)、0～34％的通式V～VIII所代表的化合物；(5) 0 to 34% of the compounds represented by general formula V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～28％的通式I所代表的化合物；(1), 2-28% of the compound represented by general formula I;
    (2)、8～38％的通式II所代表的化合物；(2) 8 to 38% of the compound represented by general formula II;
    (3)、30～50％的通式III所代表的化合物；(3) 30-50% of the compound represented by general formula III;
    (4)、1～36％的通式V～VIII所代表的化合物；(4) 1 to 36% of the compounds represented by general formulas V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
    (2)、11～34％的通式II所代表的化合物；(2) 11-34% of the compound represented by general formula II;
    (3)、32～47％的通式III所代表的化合物；(3) 32 to 47% of the compound represented by general formula III;
    (4)、5～33％的通式V～VIII所代表的化合物；(4) 5 to 33% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、5～25％的通式I所代表的化合物；(1) 5-25% of the compound represented by general formula I;
    (2)、8～35％的通式II所代表的化合物；(2) 8 to 35% of the compound represented by general formula II;
    (3)、20～70％的通式III所代表的化合物；(3) 20-70% of the compound represented by general formula III;
    (4)、1～25％的通式IV所代表的化合物；(4) 1-25% of the compound represented by general formula IV;
    (5)、0～40％的通式V～VIII所代表的化合物；(5) 0-40% of the compounds represented by the general formulae V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、7～20％的通式I所代表的化合物；(1), 7-20% of the compound represented by general formula I;
    (2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
    (3)、22～65％的通式III所代表的化合物；(3) 22-65% of the compound represented by general formula III;
    (4)、3～21％的通式IV所代表的化合物；(4) 3-21% of the compound represented by general formula IV;
    (5)、0～37％的通式V～VIII所代表的化合物；(5) 0 to 37% of the compounds represented by general formulas V to VIII;
    特别优选地，所述液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition contains the following components in mass percentage:
    (1)、10～20％的通式I所代表的化合物；(1) 10-20% of the compound represented by general formula I;
    (2)、12～27％的通式II所代表的化合物；(2) 12-27% of the compound represented by general formula II;
    (3)、42～65％的通式III所代表的化合物；(3) 42-65% of the compound represented by general formula III;
    (4)、6～21％的通式IV所代表的化合物；(4) 6-21% of the compound represented by general formula IV;
    特别优选地，所述液晶组合物包含以下质量百分比的组分：Particularly preferably, the liquid crystal composition contains the following components in mass percentage:
    (1)、7～16％的通式I所代表的化合物；(1), 7-16% of the compound represented by general formula I;
    (2)、11～30％的通式II所代表的化合物；(2) 11-30% of the compound represented by general formula II;
    (3)、22～62％的通式III所代表的化合物；(3) 22-62% of the compound represented by general formula III;
    (4)、3～18％的通式IV所代表的化合物；(4) 3-18% of the compound represented by general formula IV;
    (5)、4～37％的通式V～VIII所代表的化合物；(5) 4 to 37% of the compounds represented by general formulas V to VIII;
    优选地，所述液晶组合物包含以下质量百分比的组分：Preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～26％的通式I所代表的化合物；(1), 2 to 26% of the compound represented by general formula I;
    (2)、8～38％的通式II所代表的化合物；(2) 8 to 38% of the compound represented by general formula II;
    (3)、20～65％的通式III所代表的化合物；(3) 20-65% of the compound represented by general formula III;
    (4)、0～22％的通式IV所代表的化合物；(4) 0-22% of the compound represented by general formula IV;
    (5)、1～40％的通式V～VIII所代表的化合物；(5), 1-40% of the compounds represented by the general formulae V to VIII;
    更优选地，所述液晶组合物包含以下质量百分比的组分：More preferably, the liquid crystal composition contains the following components by mass percentage:
    (1)、2～24％的通式I所代表的化合物；(1), 2-24% of the compound represented by general formula I;
    (2)、11～34的通式II所代表的化合物；(2) Compounds represented by general formula II from 11 to 34;
    (3)、22～62％的通式III所代表的化合物；(3) 22-62% of the compound represented by general formula III;
    (4)、0～18％的通式IV所代表的化合物；(4) 0-18% of the compound represented by general formula IV;
    (5)、4～37％的通式V～VIII所代表的化合物。(5) 4 to 37% of the compounds represented by the general formulae V to VIII.
  10. 权利要求1～9任一项所述的液晶组合物在LCD显示器中的应用；优选在IPS或FFS模式显示器中的应用。The application of the liquid crystal composition according to any one of claims 1 to 9 in an LCD display; preferably an application in an IPS or FFS mode display.
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