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Liquid crystal composition and liquid crystal display device

A technology for liquid crystal compositions and compounds, applied in the directions of liquid crystal materials, chemical instruments and methods, to achieve the effects of low threshold voltage, good contrast, and fast response speed

Pending Publication Date: 2021-12-03
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
  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] The liquid crystal composition of Example 1 was prepared according to the compounds listed in Table 5 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0163] Table 5. The formula and performance parameter test results of the liquid crystal composition

[0164]

Embodiment 2

[0166] The liquid crystal composition of Example 2 was formulated according to the compounds listed in Table 6 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0167] Table 6. The formula and performance parameter test results of the liquid crystal composition

[0168]

Embodiment 3

[0170] The liquid crystal composition of Example 3 was prepared according to the compounds listed in Table 7 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0171] Table 7. The formula and performance parameter test results of the liquid crystal composition

[0172]

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PUM

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Abstract

The invention relates to a liquid crystal composition and a liquid crystal display device. 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 relatively large dielectric anisotropy, relatively large Kave value and relatively good low-temperature storage phase change point under the conditions of maintaining proper optical anisotropy, proper clearing point and proper response time, so that the liquid crystal display device containing the liquid crystal composition has the advantages of lower threshold voltage, better contrast ratio, higher response speed and wider temperature application range. The liquid crystal display device containing the liquid crystal composition is especially suitable for liquid crystal display elements driven by active matrix thin film transistors.

Description

technical field [0001] The invention relates to the field of liquid crystal technology, in particular to a liquid crystal composition and a liquid crystal display device. Background technique [0002] Liquid crystal display elements can be used in various home appliances represented by clocks and electronic calculators, measuring equipment, automotive panels, word processors, 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 twisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electrically controlled Birefringence), OCB (optical compensated bend), IPS (in-plane switching, in-plane transition), VA (vertical alignment, vertical alignment) and other types. According to the driving method of the element, the liquid crystal display element can be divided into a PM (passive matrix,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/46C09K19/44
CPCC09K19/46C09K19/44
Inventor 王立威马文阳韩文明
Owner JIANGSU HECHENG DISPLAY TECHCO