Liquid crystal composition and liquid crystal display element or liquid crystal display
A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as reducing the charge retention rate of liquid crystals, and achieve a wide nematic temperature range, high thermal and light stability, and high resistance. rate effect
Active Publication Date: 2021-05-04
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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- Abstract
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Problems solved by technology
[0006] However, although liquid crystals that directly connect double bonds to benzene rings have appeared (conjugated olefinic liquid crystals), they have not been used in the formulation of commercial liquid crystals. Reduce the charge retention rate of liquid crystal, especially after UV irradiation and after heating
Method used
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Embodiment 1
[0131]
[0132]
Embodiment 2
[0134]
Embodiment 3
[0136]
[0137]
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The invention discloses a liquid crystal composition, comprising one or more compounds of formula I-a and / or formula I-b, one or more compounds of formula II and one or more compounds of formula III , the object of the present invention is to provide a liquid crystal composition and a liquid crystal display element or a liquid crystal display comprising the liquid crystal composition, the liquid crystal composition has a lower viscosity, can realize fast response, and has moderate dielectric anisotropy Δε, moderate optical anisotropy Δn, high stability to heat and light. A liquid crystal display element or a liquid crystal display comprising the liquid crystal composition has a wide nematic phase temperature range, suitable birefringence anisotropy, very high resistivity, good UV resistance, high charge retention and low vapor Pressure equality technical scheme.
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 towards 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 gamma1, elastic constant ( K), etc., a high Δn helps to reduce the thickness of the liquid crystal cell, thereby improving the response speed, and at the same time, the monomer with high-definition bright spots is also conducive to 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 gamma1, hig...
Claims
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IPC IPC(8): C09K19/44C09K19/46
CPCC09K19/44C09K19/46
Inventor 李正强李倩员国良邓佳
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD