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Liquid crystal composition, liquid crystal display element and liquid crystal display

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of increasing rotational viscosity and decreasing response speed, etc.

Active Publication Date: 2019-12-17
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When achieving high-speed response, it is often difficult to achieve a high penetration rate, because while increasing the penetration rate, it will cause an increase in rotational viscosity, thereby reducing the response speed

Method used

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  • Liquid crystal composition, liquid crystal display element and liquid crystal display
  • Liquid crystal composition, liquid crystal display element and liquid crystal display
  • Liquid crystal composition, liquid crystal display element and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094]

[0095]

[0096] The liquid crystal composition provided in Example 1 has a low viscosity, can realize fast response, and has moderate dielectric anisotropy Δε, suitable optical anisotropy Δn, and high stability to heat and light. The compound represented by formula I can provide a high vertical dielectric of the liquid crystal composition and improve the transmittance of the liquid crystal composition. The compound represented by formula II provides a high clearing point for the liquid crystal composition, making the liquid crystal composition have high reliability. The compound represented by formula III and formula IV is used as a designated diluent to make the liquid crystal composition have low rotational viscosity and improve the response speed.

Embodiment 2

[0098]

[0099]

[0100] The liquid crystal composition provided in Example 2 added the compound shown in Formula V on the basis of Example 1. The compound shown in Formula V can provide a large elastic constant and clearing point for the liquid crystal composition, and improve the penetration of the liquid crystal composition. rate and reliability.

Embodiment 3

[0102]

[0103]

[0104] In the liquid crystal composition provided in Example 3, the compound shown in Formula VI is added on the basis of Example 2. The compound shown in Formula VI has good solubility, and can further provide a large elastic constant for the liquid crystal composition, further improving the The transmittance of the liquid crystal composition.

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PUM

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Abstract

A liquid crystal composition contains one or more compounds represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, and one or morecompounds represented by formula IV. The liquid crystal composition has a low viscosity, can realize quick response, and has a moderate dielectric anisotropy delta epsilon, a proper optical anisotropy delta n and a high stability to heat and light. A liquid crystal display element or a liquid crystal display containing the liquid crystal composition has the advantages of wide nematic phase temperature range, proper birefringence anisotropy, very high resistivity, good ultraviolet resistance, high charge retention rate, low vapor pressure and the like.

Description

technical field [0001] The invention relates to the technical 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] In the development process of LCD, the liquid crystal used in LCD is developing toward the direction of faster response speed and better reliability, and the high-speed response characteristic of liquid crystal mixture comes from the corresponding physical parameters of its components, such as rotational viscosity γ1, elastic constant ( K), etc., high Δn helps to reduce the thickness of the liquid crystal cell, thereby improving the response speed, and at the same time, the high clearing point is also helpful for the combination and matching of mixed crystals. It can be seen from this that an ideal liquid crystal monomer should have the characteristics of low γ1, appropriate refractive index, and hig...

Claims

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Application Information

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IPC IPC(8): C09K19/44
CPCC09K19/44
Inventor 康素敏员国良李正强王明霞李佳明张璇
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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