Liquid crystal composition

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of insufficient performance, and achieve the effects of fast response, high dielectric anisotropy Δε, and high charge retention rate

Active Publication Date: 2021-08-31
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution can solve low viscosity, moderate dielectric anisotropy, moderate or large optical anisotropy, fast response formula, but it requires low viscosity, high dielectric anisotropy, high Insufficient performance when optical anisotropy is required

Method used

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  • Liquid crystal composition
  • Liquid crystal composition
  • Liquid crystal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150]

[0151]

[0152] As can be seen from Comparative Examples and Example 1, 5BB(3F)B(3F,5F)CF 2 OB(3F,4F,5F), 4BB(3F)B(3F,5F)CF 2 OB(3F,5F)OCF 3 Replace equal parts with 5BBB(3F,5F)CF 2 OB(3F,4F,5F), 4BBB(3F,5F)CF 2 OB(3F,5F)OCF 3 , the bijection Δn increases, the clearing point Cp increases, and the rotational viscosity γ1 basically remains the same. The mixture provided by the invention exhibits a higher range of liquid crystal phases and a higher refractive index, and is excellent in the application of liquid crystals with low cell thickness and fast response (requiring large birefringence Δn) and wide temperature liquid crystals.

[0153] Due to Example K 11 Larger, despite roughly equivalent viscosities, also achieve faster response times.

Embodiment 2

[0158]

[0159]

[0160] Example 2 has higher refractive index Δn, higher clearing point Cp, higher dielectric anisotropy Δε and higher K than Comparative Example 2 11 .

Embodiment 3

[0165]

[0166] Example 3 has higher refractive index Δn, higher clearing point and higher K than Comparative Example 3 11 .

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Abstract

The invention discloses a liquid crystal composition, which comprises one or more compounds shown in formula I and one or more compounds shown in formula II, and the liquid crystal composition contains at least one formula contained in formula II In the compound shown in Ⅱ-A, each substituent has its definition. The present invention relates to compositions having a low viscosity gamma 1 , higher dielectric anisotropy Δε, larger optical anisotropy Δn, can realize fast response of liquid crystal display.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a liquid crystal composition and a liquid crystal display element or a liquid crystal display containing the liquid crystal composition. Background technique [0002] At present, the application range of liquid crystal compounds is expanding more and more widely, and it can be applied to various types of displays, electro-optic devices, sensors, and the like. There are various types of liquid crystal compounds used in the above-mentioned display fields, among which nematic liquid crystals are most widely used. Nematic liquid crystals have been used in passive TN, STN matrix displays and systems with TFT active matrix. [0003] For the application field of thin film transistor technology (TFT-LCD), although the market has been huge in recent years and the technology has gradually matured, people's requirements for display technology are also constantly improving, especially ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333
Inventor 孟劲松员国良张虎波张兴
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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