A kind of negative dielectric anisotropy liquid crystal composition and its application

Abstract

The invention relates to liquid crystal composition with negative dielectric anisotropy. The liquid crystal composition comprises at least one compound represented in general formula I, at least one compound represented in general formula II and at least one compound represented in general formula III, wherein the compound represented in the general formula I is a vinyl bicyclohexane compound with very good rotary viscosity and excellent intersolubility; the compound represented in the general formula II is a liquid crystal compound containing cyclohexenyl and 2,3-difluoro structures with higher negative dielectric anisotropy and low rotary viscosity, and the negative dielectric anisotropy of the liquid crystal composition can be effectively improved; the compound represented in general formula III is a compound containing 2,3-difluorobenzene and has larger negative dielectric anisotropy and excellent intersolubility. All the components have a synergistic effect, so that the liquid crystal composition has low rotary viscosity, the response time of a liquid crystal display can be effectively shortened, and the composition has excellent application effects.

Description

technical field [0001] The present invention relates to a liquid crystal composition, specifically, the liquid crystal composition provided by the present invention has negative dielectric anisotropy; more precisely, the liquid crystal composition provided by the present invention contains cyclohexene negative Dielectric anisotropic compounds. Background technique [0002] At present, liquid crystals have been widely used in the field of information display, and some progress has also been made in the application of optical communication (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001). In recent years, the application fields of liquid crystal compounds have been significantly expanded to various display devices, electro-optic devices, electronic components, sensors, etc., and nematic liquid crystal compounds have been the most widely used in flat panel displays, especially for TFT active devices. in the matrix system. [0003] At present, negative liquid ...

AI Technical Summary

Problems solved by technology

However, the response time problem of negative liquid crystals is a major problem encountered at present. The response time of FFS displays using negative liquid crystals is 50% or more slower than that of positive liquid crystal FFS displays.

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