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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 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] 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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