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Liquid crystal composition and application thereof

A technology for liquid crystal compositions and compounds, which can be used in liquid crystal materials, optics, instruments, etc., and can solve the problems of high viscosity, low voltage retention, and slow response speed.

Pending Publication Date: 2019-01-11
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing liquid crystal composition, better characteristics can be obtained, but this type of composition has a low clearing point, high viscosity, insufficient optical anisotropy, low absolute value of dielectric anisotropy, and low voltage retention. Low, it is not very helpful to mix into a composition with large optical anisotropy, suitable absolute value of dielectric anisotropy, good stability and good contrast, which directly leads to low contrast, slow response speed, and device display Poor effect and other adverse consequences, such as foreign patent documents WO9202597, WO9116398, WO9302153, WO9116399, Chinese patent document CN1157005A, etc., have the above-mentioned shortcomings to varying degrees

Method used

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  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0224] The liquid crystal composition of Example 1 was prepared by each compound listed in Table 3 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0225] Table 3 liquid crystal composition formula and test performance thereof

[0226]

[0227]

Embodiment 2

[0229] The liquid crystal composition of Example 2 was formulated according to the compounds and weight percentages listed in Table 4, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the table below:

[0230] Table 4 liquid crystal composition formula and test performance thereof

[0231]

Embodiment 3

[0233] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 5 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0234] Table 5 liquid crystal composition formula and test performance thereof

[0235]

[0236]

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PUM

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Abstract

The invention discloses a liquid crystal composition and an application thereof. The liquid crystal composition comprises at least one compound of formula I, and at least one compound of formula II. The liquid crystal composition provided by the present invention has suitable optical anisotropy and has a relatively large elastic constants K11 and K33 while a relatively high clearing point, relatively low dielectric anisotropy, and good low-temperature mutual solubility are maintained. When the liquid crystal composition is applied to a liquid crystal display, the liquid crystal composition canhave the advantages of fast response, high contrast, large temperature width and the like.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition and its application. Background technique [0002] Liquid Crystal Display (LCD) has been developed rapidly due to its small size, light weight, low power consumption and excellent display quality, and is especially widely used in portable electronic information products. As the size of LCD screens for portable computers, office applications, and video applications increases, LCDs can be used for large-screen displays and eventually replace Cathode Ray Tube (CRT) displays. [0003] According to the type of display mode, it is divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electrically controlled birefringence), OCB (optically compensated bend, optically compensated bending), IPS (in-plane switching, coplanar transf...

Claims

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Application Information

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IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333
Inventor 姚利芳徐海彬李鹏飞贺笛徐爽
Owner JIANGSU HECHENG DISPLAY TECHCO
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