Liquid crystal composition

A liquid crystal composition and compound technology, which is applied in liquid crystal materials, optics, instruments, etc., can solve the problems that it is difficult to find the law, and there is no perfect theoretical explanation, so as to achieve the effect of fast response, easy and fast response

Inactive Publication Date: 2018-01-09
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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  • Liquid crystal composition
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] 15% 2CC B(3F,5F)BOCF in Comparative Example 1 3 Replaced with 8% 5CBB(3F,5F)BCF 3 +7% of 3CBB(3F,5F)BCF 3 , obtain embodiment 1 composition:

[0131] Δε[1KHz,20℃]: 10.5

[0132] Δn[589nm, 20°C]: 0.120

[0133] K 11 : 13.5

[0134] Cp: ​​120°C

[0135] gamma 1 : 140mPa.s.

[0136] Obviously, the γ of the liquid crystal in Example 1 1 Decrease, Δn, K 11 All have been improved, especially suitable for low cell thickness and fast response liquid crystal.

Embodiment 2

[0140] In comparative example 2, 7% of 3CCB(3F)B(3F,4F,5F) was replaced with 7% of 5CBB(3F,5F)BCF 3 , 9% of 5CCB(3F,5F)BF is replaced by 9% of 5CBB(3F,5F)BCF 3 ,, obtain embodiment 2 composition:

[0141] Δε[1KHz,20℃]: 5.5

[0142] Δn[589nm, 20°C]: 0.105

[0143] Cp: ​​135°C

[0144] gamma 1 : 150mPa.s.

[0145] Obviously, the γ of the liquid crystal in Example 1 1 Δn and Δε are improved, especially suitable for low cell thickness and fast response liquid crystal.

Embodiment 3

[0147]

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Abstract

The invention provides a liquid crystal composition containing one or more compounds as shown in a formula I and one or more compounds as shown in a formula II; and the liquid crystal composition contains a compound as shown in a formula II-A, wherein all substituent groups are defined. The composition provided by the invention has low viscosity gamma 1, moderate dielectric anisotropy delta epsilon and moderate optical anisotropy delta n and can realize rapid response of a 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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IPC IPC(8): C09K19/30C09K19/44G02F1/1333
Inventor 康素敏员国良高文星王明霞
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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