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Liquid crystal composition and display device thereof

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc. It can solve the problems of poor low-temperature storage stability, long response time, and high operating voltage, and achieve high-definition highlights, fast response speed, and reliability high effect

Active Publication Date: 2016-05-18
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since liquid crystals are usually used as a mixture of various components, the mutual solubility between the components is particularly important, and according to different battery types and application fields, liquid crystals must meet different requirements, such as conductivity, dielectric properties, etc. Anisotropy and optical anisotropy, etc., but the obvious disadvantages in the prior art are longer response time, lower resistivity and too high operating voltage, such as EP0673986, DE19528106, DE19528107
In addition, poor low temperature storage stability is also a defect of many existing liquid crystal materials, such as WO9732942A1

Method used

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  • Liquid crystal composition and display device thereof
  • Liquid crystal composition and display device thereof
  • Liquid crystal composition and display device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] The liquid crystal composition of Example 1 was prepared according to the compounds and weight percentages listed in Table 3, which was filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:

[0091] Table 3 Liquid crystal composition formula and its test performance

[0092]

Embodiment 2

[0094] The liquid crystal composition of Example 2 was prepared according to the compounds and weight percentages listed in Table 4, which was filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:

[0095] Table 4 Liquid crystal composition formula and its test performance

[0096]

Embodiment 3

[0098] The liquid crystal composition of Example 3 was prepared according to the compounds and weight percentages listed in Table 5, which was filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:

[0099] Table 5 Liquid crystal composition formula and its test performance

[0100]

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PUM

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Abstract

The invention discloses a liquid crystal composition and its display device. The liquid crystal composition contains one or more compounds selected from compounds as shown in the general formula I-1 and / or general formula I-2; one or more compounds selected from compounds as shown in the general formula II, one or more compounds selected from compounds as shown in the general formula III; and one or more compounds selected from compounds as shown in the general formula IV. The liquid crystal composition provided by the invention has proper optical anisotropy, proper dielectric anisotropy, high clearing point, wide nematic-phase temperature range, fast response speed and good cryogenic storage stability, and is suitable for a liquid-crystal display device. By the use of the liquid crystal composition, the liquid-crystal display device has characteristics of fast response and high reliability, and can normally operate within a wide temperature range.

Description

Technical field [0001] The present invention relates to a liquid crystal composition, in particular to a liquid crystal composition with suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, faster response speed and good low-temperature storage stability, And a liquid crystal display device containing the liquid crystal composition. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecule compounds that have both liquid fluidity and crystal anisotropy at a certain temperature. Liquid crystal materials are widely used in liquid crystal display elements of electronic calculators, automobile meters, televisions, computers and other devices because of their optical anisotropy and dielectric anisotropy. [0003] Liquid crystal materials are divided according to the phase transition temperature, which can be divided into normal temperature liquid crystal (phase transition temperature range: -10℃~60℃) and wide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 刘云云韩文明丁文全李鹏飞姚利芳戴慧娟贺笛徐海彬张鹤鸣马文阳马定福施红萍
Owner JIANGSU HECHENG DISPLAY TECHCO
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