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Liquid crystal composition and liquid crystal display device

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of liquid crystal materials being not particularly stable in storage, long response time, high operating voltage, etc., and achieve good UV resistance stability, The effect of large dielectric anisotropy and high voltage retention

Active Publication Date: 2017-05-03
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these liquid crystal compositions have significant disadvantages
Most of them, among other disadvantages, lead to unfavorably long response times, have too low resistivity and require too high operating voltages
In addition, many existing liquid crystal materials are not particularly stable when stored at low temperatures

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

[0064] The liquid crystal composition of Example 1 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 following table:

[0065] Table 4 Liquid crystal composition formula and its test performance

[0066]

Embodiment 2

[0068] The liquid crystal composition of Example 2 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:

[0069] Table 5 Liquid crystal composition formula and its test performance

[0070]

[0071]

Embodiment 3

[0073] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 6 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:

[0074] Table 6 Liquid crystal composition formula and its test performance

[0075]

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Abstract

The invention provides a liquid crystal composition. The liquid crystal composition comprises one or more compounds with the general formula I, accounting for 10-60% of the total weight of the liquid crystal composition, one or more compounds with the general formula II, accounting for 15-40% of the total weight of the liquid crystal composition, one or more compounds with the general formula III, accounting for 5-25% of the total weight of the liquid crystal composition, one or more compounds with the general formula IV, accounting for 5-30% of the total weight of the liquid crystal composition, and one or more compounds with the general formula V-1 and / or V-2, accounting for 0-20% of the total weight of the liquid crystal composition. The liquid crystal composition has a relatively high clearing point, properly high dielectric anisotropy, properly high optical anisotropy, a relatively fast response speed, a relatively high voltage holding ratio and good ultraviolet-resistant stability, and is suitable for FFS and other display modes. The invention further provides a liquid crystal display device comprising the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition, in particular to a liquid crystal composition with relatively high clearing point, suitably large dielectric anisotropy, suitably high optical anisotropy, fast response speed, good voltage retention and Liquid crystal composition with good anti-ultraviolet light stability and its application in liquid crystal display devices. Background technique [0002] Liquid crystal display (liquid crystal display) is a display that utilizes the photoelectric changes of liquid crystals. It has attractive advantages such as small size, light weight, low power consumption, and good display quality. Therefore, it has become the mainstream of flat-panel displays in recent years. The electro-optical modes used in existing liquid crystal displays are, for example, twisted nematic (TN), super twisted nematic (STN), optically compensated bending (OCB) and electrically controlled birefringence (ECB) modes and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/30G02F1/1333
Inventor 韩文明胡娟李鹏飞
Owner JIANGSU HECHENG DISPLAY TECH CO LTD