LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT OR DISPLAY THEREOF

    公开(公告)号:US20190078021A1

    公开(公告)日:2019-03-14

    申请号:US16126667

    申请日:2018-09-10

    IPC分类号: C09K19/34 G02F1/137

    摘要: The present invention discloses a negative dielectric anisotropic liquid crystal composition, characterized in that the liquid crystal composition comprises one or more compounds represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III and one or more compounds represented by formula IV, In the liquid crystal molecules of the composition, the van der Waals force therebetween is used as a motive force, such that the liquid crystal molecules generate an attractive force at an appropriate distance and positional relationships, thereby enabling the liquid crystal molecules to have excellent regular alignment characteristics, which is favorable for the liquid crystal molecules to modulate the transmission and blocking of light in the liquid crystal display device.

    LIQUID CRYSTAL COMPOUND CONTAINING 2,3,4-TRISUBSTITUTED BENZENE AND COMPOSITION THEREOF

    公开(公告)号:US20180094191A1

    公开(公告)日:2018-04-05

    申请号:US15714234

    申请日:2017-09-25

    IPC分类号: C09K19/34 C09K19/30 G02F1/137

    摘要: Provided is a liquid crystal compound containing 2,3,4-trisubstituted benzene, a liquid crystal composition thereof, and a liquid crystal display element or a liquid crystal display comprising the liquid crystal compound or the liquid crystal composition, wherein the liquid crystal composition has a lower viscosity, can achieve a quick response, and further has a moderate dielectric anisotropy Δϵ, a moderate optical anisotropy Δn, and high stability to heat and light. The liquid crystal display element or liquid crystal display comprising the liquid crystal composition has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good ultraviolet resistant property, a high charge retention rate, a low vapor pressure etc., and particularly, the liquid crystal compound or the liquid crystal composition has the advantage of a high light transmittance.