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Large-dielectric-anisotropy high-optical-anisotropy liquid crystal composition and preparation method and application thereof

A liquid crystal composition, anisotropic technology, applied in the direction of nonlinear optics, chemical instruments and methods, optics, etc., can solve the problems of limited production, weak core competitiveness, and dependence on imports, etc., and achieve broad application prospects and application value. The effect of increasing the ratio and quick response

Active Publication Date: 2012-12-12
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's TFT-LCD industry has developed rapidly, but the key raw materials required by TFT panel companies and key equipment for production lines are still heavily dependent on imports, which has resulted in high manufacturing costs and low core competitiveness of my country's TFT-LCD industry. Weak, production is controlled by others

Method used

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  • Large-dielectric-anisotropy high-optical-anisotropy liquid crystal composition and preparation method and application thereof
  • Large-dielectric-anisotropy high-optical-anisotropy liquid crystal composition and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The following liquid crystal mixtures were prepared in proportion and their properties were tested.

[0078]

[0079]

[0080] The performance parameters of the liquid crystal composition are: cp: 75.8°C; Δn: 0.228; Δε: 41.1.

Embodiment 2

[0082] The following liquid crystal mixtures were prepared in proportion and their properties were tested.

[0083]

[0084]

[0085] The performance parameters of the liquid crystal composition are: cp: 76.1° C.; Δn: 0.215; Δε: 43.2.

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Abstract

The invention discloses a large-dielectric-anisotropy high-optical-anisotropy liquid crystal composition and a preparation method and the application thereof. The liquid crystal composition comprises a component I and a component II, wherein the component I is optionally a component a, a component b, a component c or a component d, the component a comprises at least one substance shown in a formula I and a formula II, the component b comprises at least one substance shown in the formula I and a formula III, the component c comprises at least one substance shown in the formula II and the formula III, and the component d comprises at least one substance shown in the formula I, the formula II and the formula III. Triphenyl diyne type substances with bigger optical anisotropic values are used, so that proportion of large dielectric anisotropic monomers is increased while high optical anisotropy is maintained, quick response is realized, and the large-dielectric-anisotropy high-optical-anisotropy liquid crystal composition has wide application prospect and value under various liquid display modes, especially in aspects of blue-phase liquid crystal display, cholesteric-phase liquid crystal display, polymer dispersed liquid crystal display and polymer network liquid crystal display. The formula I, the formula II and the formula III are shown as follows.

Description

technical field [0001] The invention relates to a liquid crystal composition with large dielectric anisotropy and high optical anisotropy, its preparation method and application. Background technique [0002] In recent years, my country's TFT-LCD industry has developed rapidly, but the key raw materials required by TFT panel companies and key equipment for production lines are still heavily dependent on imports, which has resulted in high manufacturing costs and low core competitiveness of my country's TFT-LCD industry. Weak, production is subject to the status quo. [0003] Liquid crystal material is the key raw material for realizing liquid crystal display. From a global perspective, the mixed liquid crystal material used for TFT-LCD is monopolized by German Merck Company and Japanese Chisso Company. The characteristics of my country's liquid crystal material industry are TN (twisted nematic), STN (Super Twisted Nematic) liquid crystal material is strong while TFT liquid cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/46C09K19/30C09K19/20C09K19/18G02F1/1333
Inventor 李正强张兴李宁周兴丹华瑞茂
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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