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Liquid crystal composition and liquid crystal display device thereof

A liquid crystal composition and compound technology, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., to achieve good optical anisotropy, wide usable temperature range, and high-definition bright spots

Pending Publication Date: 2022-06-03
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the preparation of liquid crystal materials with suitable properties in all aspects often requires creative labor.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0220] The liquid crystal composition of Example 1 was prepared according to the compounds listed in Table 3 and their weight percentages, and was filled between two substrates of a liquid crystal display for performance testing.

[0221] Table 3. Formulation and performance parameter test results of liquid crystal composition

[0222]

[0223] It can be seen from the comparison between Comparative Example 1 and Example 1 that the liquid crystal composition of the present invention has a relatively high performance under the condition of maintaining proper optical anisotropy, proper absolute value of dielectric anisotropy and proper long storage time at low temperature. Clearing point and smaller quiescent current (initial, UV, boiled).

Embodiment 2

[0225] The liquid crystal composition of Example 2 was prepared according to the compounds listed in Table 4 and their weight percentages, and was filled between the two substrates of the liquid crystal display for performance testing.

[0226] Table 4. Formulation and performance parameter test results of liquid crystal composition

[0227]

[0228]

Embodiment 3

[0230] The liquid crystal composition of Example 3 was prepared according to the compounds listed in Table 5 and their weight percentages, and was filled between two substrates of a liquid crystal display for performance testing.

[0231] Table 5. Formulation and performance parameter test results of liquid crystal composition

[0232]

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PUM

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Abstract

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula II. The liquid crystal composition has good optical anisotropy, a high clearing point, a large dielectric anisotropy absolute value and a small quiescent current (initial, UV and water boiling) under the condition of maintaining appropriate low-temperature storage time, so that a liquid crystal display device containing the liquid crystal composition has good dielectric anisotropy and good dielectric anisotropy under the condition of appropriate low-temperature resistance. The liquid crystal composition is wide in usable temperature range, small in threshold voltage, good in contrast ratio and high in reliability.

Description

technical field [0001] The present invention relates to the field of liquid crystal, in particular to a liquid crystal composition and a liquid crystal display device comprising the liquid crystal composition. Background technique [0002] The liquid crystal display element can be used in various household appliances including clocks and electronic calculators, measuring equipment, panels for automobiles, word processors, personal computers, printers, televisions, and the like. According to the type of display mode, liquid crystal display elements can be divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twistednematic, super twisted nematic), ECB (electrically controlled birefringence, electronically controlled Birefringence), OCB (optically compensated bend), IPS (in-plane switching, coplanar transition), VA (vertical alignment, vertical alignment) and other types. Liquid crystal display elements can be classified into PM (passiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/46G02F1/1333
CPCC09K19/44C09K19/46G02F1/1333
Inventor 王立威李鹏程马文阳
Owner JIANGSU HECHENG DISPLAY TECHCO
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