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liquid crystal composition

A liquid crystal composition and compound technology, applied in liquid crystal materials, optics, instruments, etc., can solve problems such as lack of perfect theoretical explanations and difficulty in finding laws

Active Publication Date: 2017-12-19
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small changes in liquid crystal molecules will cause obvious changes in the performance of conventional parameters of liquid crystals. Some of these changes have certain rules, and some seem to be difficult to find the rules. They will also have obvious effects on the interaction between liquid crystal molecules. These effects are very Subtle, so far there is no perfect theoretical explanation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125]

[0126]

[0127] Δε[1KHz,20℃]: 7.2

[0128] Δn[589nm, 20°C]: 0.104

[0129] Cp: ​​105°C

[0130] gamma 1 [20°C]: 72mPa.s.

Embodiment 2

[0132]

[0133]

[0134] Δε[1KHz,20℃]: 5.7

[0135] Δn[589nm, 20°C]: 0.115

[0136] Cp: ​​95°C

[0137] gamma 1 [20°C]: 69mPa.s.

Embodiment 3

[0139]

[0140]

[0141] Δε[1KHz,20℃]: 9.2

[0142] Δn[589nm, 20°C]: 0.152

[0143] Cp: ​​125°C

[0144] gamma 1 [20°C]: 228mPa.s.

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Abstract

The invention discloses a liquid crystal composition, comprising one or more compounds represented by formula I and one or more compounds represented by formula II, and the liquid crystal composition comprises compounds represented by II‑A, wherein each substituent Both give their definitions. The invention relates to a composition with low viscosity γ1, moderate dielectric anisotropy Δε, moderate or larger optical anisotropy Δn, and 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
Inventor 员国良王奎徐凯张伟
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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