Liquid crystal composition

A technology for liquid crystal compositions and compounds, which can be applied in liquid crystal materials, optics, instruments, etc., and can solve problems such as insufficient performance

Active Publication Date: 2018-10-23
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 formu

Method used

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  • Liquid crystal composition
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150]

[0151]

[0152] It can be seen from the comparative example and Example 1, that 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 bijective Δn increases, the clearing point Cp increases, and the rotational viscosity γ1 is basically flat. The mixture provided by the present invention exhibits a higher liquid crystal phase range, a higher refractive index, and is excellent in low cell thickness, fast response (large birefringence Δn) liquid crystal and wide temperature liquid crystal applications.

[0153] As Example K 11 Larger, even though the viscosity is basically the same, a faster response speed can be achieved.

Embodiment 2

[0158]

[0159]

[0160] Example 2 has a higher refractive index Δn, a higher clearing point Cp, a higher dielectric anisotropy Δε, and a higher K than the 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 present invention discloses a liquid crystal composition, which comprises one or a plurality of compounds represented by a formula I, and one or a plurality of compounds represented by a formula II, and further at least contains a compound represented by a formula II-A contained in the formula II, wherein each substituent is defined in the specification. According to the present invention, thecomposition has characteristics of low viscosity gamma1, high dielectric anisotropy [delta]epsilon and high optical anisotropy [delta]n, and can achieve the fast response of liquid crystal display.

Description

Technical field [0001] The present invention relates to the field of liquid crystal display, in particular to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. Background technique [0002] At present, the application range of liquid crystal compounds is expanding wider and wider, and it can be applied to various types of displays, electro-optical devices, sensors, and the like. There are many types of liquid crystal compounds used in the above-mentioned display fields, and nematic liquid crystals are the 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 very huge in recent years, the technology has gradually matured, but people’s requirements for display technology are also increasing, especially in achieving ra...

Claims

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Application Information

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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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