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., can solve the problems of high and low temperature reliability performance reduction, accelerated response speed, and low clearing point, and achieves a wide nematic phase temperature range, The effect of good high temperature stability and fast response speed

Active Publication Date: 2018-05-22
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the various performances of liquid crystal materials are mutually restricted. Accelerating the response speed will often bring about a decrease in the clearing point, resulting in the failure of the liquid crystal display to work in a high temperature environment, and the reduction of high and low temperature reliability. not displaying properly

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

[0081] 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:

[0082] Table 3 Liquid crystal composition formula and its test performance

[0083]

Embodiment 2

[0085] 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:

[0086] Table 4 Liquid crystal composition formula and its test performance

[0087]

Embodiment 3

[0089] 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:

[0090] Table 5 Liquid crystal composition formula and its test performance

[0091]

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PUM

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Abstract

The invention discloses a liquid crystal composition, which comprises: a first compound selected from the group consisting of compounds of general formula I-1, compounds of general formula I-2 and combinations thereof; The second compound of the group consisting of compound, compound of general formula II-2, compound of general formula II-3, compound of general formula II-4 and combinations thereof. The liquid crystal composition provided by the invention has properties such as suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, faster response speed and good high temperature stability, and can be applied to liquid crystal displays , so that the liquid crystal display has the characteristics of short response time, high reliability, and can work normally under high temperature.

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 high temperature 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. Liquid crystal display elements work by utilizing the optical anisotropy and dielectric anisotropy of the liquid crystal material itself, and have been widely used at present. Utilizing the different characteristics and working modes of liquid crystal materials, the device can be designed into various working modes. Among them, the TN mode (twisted nematic mode, the liquid crystal mixture has a nematic structure with a twist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 韩文明徐海彬马定福刘琦
Owner JIANGSU HECHENG DISPLAY TECHCO
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