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

A technology of liquid crystal composition and liquid crystal compound, which is applied in the direction of liquid crystal materials, chemical instruments and methods, and can solve the problems of high energy consumption and light waste of liquid crystal panels

Active Publication Date: 2019-04-23
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The reason for the high energy consumption of LCD panels is that only about 5% of the backlight can penetrate the display device and be captured by the human eye, and most of the light is "wasted".

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

[0106]

[0107]

[0108] The liquid crystal composition provided by Comparative Example 1-2 and the liquid crystal composition provided by Example 1 were respectively poured into the test box for testing: the transmittance of the liquid crystal composition of Comparative Example 1 was 5.4%, and the transmittance of the liquid crystal composition of Comparative Example 2 was 5.4%. The transmittance is 5.3%, and the transmittance of the liquid crystal composition of Example 1 is 6%, which is 11% and 13% higher than that of the liquid crystal compositions of Comparative Example 1 and Comparative Example 2, respectively. And other aspects of performance, such as clearing point, refractive index, dielectric, response time, etc., are not lost, thus obtaining a liquid crystal product with fast response, high transmittance, and good stability.

Embodiment 2

[0110]

[0111]

[0112] The liquid crystal composition provided by Comparative Example 1-2 and the liquid crystal composition provided by Example 2 were respectively poured into the test box for testing: the transmittance of the liquid crystal composition of Comparative Example 1 was 5.4%, and the transmittance of the liquid crystal composition of Comparative Example 2 was 5.4%. The transmittance is 5.3%, and the transmittance of the liquid crystal composition of Example 2 is 6.1%, which is 13% and 15% higher than that of the liquid crystal compositions of Comparative Example 1 and Comparative Example 2, respectively. Moreover, the liquid crystal composition of Example 2 has a relatively large refractive index, is suitable for display applications such as low cell thickness, and is conducive to realizing performances such as wide viewing angle, high contrast ratio, and high-quality dynamic picture playback.

Embodiment 3

[0114]

[0115]

[0116] The liquid crystal composition provided by Comparative Example 1-2 and the liquid crystal composition provided by Example 3 were respectively poured into the test box for testing: the transmittance of the liquid crystal composition of Comparative Example 1 was 5.4%, and the transmittance of the liquid crystal composition of Comparative Example 2 was 5.4%. The transmittance is 5.3%, and the transmittance of the liquid crystal composition of Example 3 is 6.2%, which is 15% and 17% higher than that of the liquid crystal compositions of Comparative Example 1 and Comparative Example 2, respectively. And the liquid crystal composition of Example 3 has a lower rotational viscosity, and is suitable for high transmittance and fast response liquid crystal displays.

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PUM

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Abstract

The invention relates to a liquid crystal composition, a liquid crystal display element and a liquid crystal display. The liquid crystal composition comprises one or more compounds represented by a formula I, one or more compounds represented by a formula II, and one or more compounds represented by a formula III, wherein each of R1, R2, R3 and R4 independently represents an alkyl group having 1-10 carbon atoms, a fluorine-substituted alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, a fluorine-substituted alkoxy group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, a fluorine-substituted alkenyl group having 2-10 carbon atoms, an alkenyloxy group having 3-8 carbon atoms, or a fluorine-substituted alkenyloxy group having 3-8 carbon atoms;each of R and R' represents a cyclopropyl group, a cyclopentyl group or a 2-tetrahydrofuranyl group; each of a ring A and a ring B independently represents a 1,4-phenylene group or a 1,4-cyclohexylenegroup. The liquid crystal composition is especially suitable for active matrix displays, especially displays based on VA, PSA, PA-VA, SS-VA, SA-VA, PS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effects.

Description

technical field [0001] The invention relates to the field of liquid crystal display. More specifically, it relates 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 impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/42C09K19/34C09K19/30C09K19/12
CPCC09K19/12C09K19/3003C09K19/3405C09K19/3491C09K19/42C09K19/44C09K2019/3408C09K2019/3004C09K2019/3009C09K2019/122C09K2019/301C09K2019/3016C09K2019/3027C09K19/3066C09K2019/123C09K2019/3021C09K2019/0466C09K19/32
Inventor 王明霞崔红梅王一平康素敏
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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