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liquid crystal composition

A technology of liquid crystal compositions and compounds, applied in the fields of liquid crystal materials, optics, instruments, etc., can solve the problems of not forming a perfect theoretical explanation, difficult to find rules, etc.

Active Publication Date: 2017-09-29
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

[0138]

[0139]

[0140] Δε[1KHz,20℃]: 8.3

[0141] Δn[589nm,20℃]: 0.98

[0142] Cp: ​​90°C

[0143] γ 1 [20°C]: 51 mPa.s.

Embodiment 2

[0145]

[0146]

[0147] Δε[1KHz,20℃]: 6.1

[0148] Δn[589nm,20℃]: 0.110

[0149] Cp: ​​℃ 125

[0150] γ 1 [20°C]: 105mPa.s.

Embodiment 3

[0152]

[0153]

[0154] Δε[1KHz,20℃]: 8.9

[0155] Δn[589nm,20℃]: 0.143

[0156] Cp: ​​121°C

[0157] γ 1 [20°C]: 144mPa.s.

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PUM

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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, and moderate optical anisotropy Δn, which can realize 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 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 and the technology has gradually matured, people’s requirements for display technology are also increasing, especially in achieving rapid respons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/30C09K19/44G02F1/1333
Inventor 员国良徐凯王奎孟劲松
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD