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: 2018-02-16
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 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:

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

[0092]

Embodiment 2

[0094] 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:

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

[0096]

Embodiment 3

[0098] 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:

[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 a display device thereof. The liquid crystal composition comprises: one or more compounds selected from general formula I-1 and / or general formula I-2; one or more compounds selected from general formula II, one or more compounds selected from a compound of general formula III; and one or more compounds selected from general formula IV. The liquid crystal composition provided by the present invention has suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, wider nematic phase temperature range, faster response speed and good low-temperature storage stability It is suitable for liquid crystal display devices, so that the liquid crystal display devices have the characteristics of fast response, high reliability, and normal operation in 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 comprising the liquid crystal composition. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecular compounds that have both fluidity of liquid and anisotropy of crystal at a certain temperature. Because of the characteristics of optical anisotropy and dielectric anisotropy, liquid crystal materials are widely used in liquid crystal display components of electronic calculators, automobile instruments, televisions, computers and other devices. [0003] Liquid crystal materials can be divided into normal temperature liquid crystals (phase transition temperature range: -10°C to 60°C) and wide temperature liquid c...

Claims

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Application Information

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Patent Type & Authority Patents(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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