Liquid crystal composition and its liquid crystal display device

A liquid crystal composition and compound technology, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of insufficient dielectric anisotropy, insufficient optical anisotropy of compounds, and little help

Active Publication Date: 2018-05-04
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the dielectric anisotropy and optical anisotropy of this type of compound are not large enough, and it is not helpful to mix into a composition with large Δn and Δε, which is not conducive to being used in products with small box thickness, which directly leads to the product not responding fast enough

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] 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:

[0146] Table 4 liquid crystal composition formula and test performance thereof

[0147]

Embodiment 2

[0149] 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:

[0150] Table 5 liquid crystal composition formula and test performance thereof

[0151]

Embodiment 3

[0153] 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:

[0154] Table 6 liquid crystal composition formula and test performance thereof

[0155]

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Abstract

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises: one or more compounds of general formula I-1 and / or I-2; one or more compounds of general formula II; one or more compounds of general formula III-1 and / or III-2 compounds; one or more compounds of general formula IV; and one or more compounds of general formula V. The liquid crystal composition of the present invention has a wide nematic phase temperature range, larger dielectric anisotropy, larger optical anisotropy, higher clearing point, high voltage retention rate, and high stability to low temperature , low rotational viscosity and other characteristics. The liquid crystal composition of the present invention is suitable for liquid crystal display devices, so that the liquid crystal display device has a large dielectric anisotropy and a high clearing point, while ensuring a faster response, and a low temperature phase transition point, mutual Good solubility and good reliability.

Description

technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display device thereof, in particular to a liquid crystal composition having relatively large dielectric anisotropy, relatively high clearing point, low viscosity, relatively high contrast and appropriate optical anisotropy and comprising A liquid crystal display device of the liquid crystal composition. Background technique [0002] For liquid crystal display elements, according to the display mode of liquid crystal, it is divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), ECB (electrically controlled birefringence) , electronically 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 mode of the component, it is divided into PM (passive matrix, pass...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor贺笛韩文明丁文全徐海彬李鹏飞戴慧娟姚利芳刘云云马文阳王盼盼马定福施红萍张鹤鸣
OwnerJIANGSU HECHENG DISPLAY TECH CO LTD