Liquid crystal composition and its liquid crystal display device

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, and can solve problems such as low viscosity, high resistivity, optical anisotropy, response speed, and low driving voltage that cannot be satisfied at the same time

Active Publication Date: 2018-02-16
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] Although, the liquid crystal composition that has the value of large resistivity (ρ) is disclosed in the prior art, as patent document CN103666485A, but still exist in the prior art and can't take into account the requirements of low viscosity, high resistance in LCD TVs, tablet computers, etc. Rate, suitable optical anisotropy, suitable dielectric anisotropy, high response speed, low driving voltage performance balance problem, cannot meet various indicators at the same time

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

[0193] The liquid crystal composition of Example 1 was formulated according to the compounds and weight percentages listed in Table 5, 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:

[0194] Table 5 Liquid crystal composition formula and its test performance

[0195]

Embodiment 2

[0197] The liquid crystal composition of Example 2 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:

[0198] Table 6 Liquid crystal composition formula and its test performance

[0199]

Embodiment 3

[0201] The liquid crystal composition of Example 3 was formulated according to the compounds and weight percentages listed in Table 7, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0202] Table 7 Liquid crystal composition formula and its test performance

[0203]

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Abstract

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises: the compound of general formula I accounting for 2-40% of the total weight of the liquid crystal composition; the compound of general formula II accounting for 5-30% of the total weight of the liquid crystal composition; The compound of general formula III accounting for 15-55% of the total weight; the compound of general formula IV accounting for 2-45% of the total weight of the liquid crystal composition; the compound of general formula V accounting for 0-30% of the total weight of the liquid crystal composition . The liquid crystal composition of the present invention has at least one of the characteristics of high resistivity, high voltage retention, suitable optical anisotropy, suitable dielectric anisotropy, good ultraviolet and high temperature stability, and is suitable for liquid crystal display device. The present invention also provides a liquid crystal display device comprising the liquid crystal composition.

Description

technical field [0001] The invention relates to a liquid crystal composition and a liquid crystal display device thereof, in particular to a liquid crystal composition with high resistivity and high voltage retention rate and a liquid crystal display device thereof. 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. Liquid crystal display elements are classified into reflective type using natural light, transmissive type using backlight, and transflective type using both natural light and backlight according to the type of light source. [0003] It...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 李鹏飞丁文全韩文明戴慧娟姚利芳贺笛刘云云张鹤鸣马文阳马定福施红萍
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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