Liquid crystal medium and application thereof

Abstract

The invention relates to the field of liquid crystal display, in particular to a liquid crystal medium and application thereof. The liquid crystal medium at least contains a compound represented by ageneral formula I and at least one compound represented by at least one general formula II, wherein the compound represented by the general formula I is a three-ring compound with 2,3-difluorobenzenestructures; the structure has greater negative dielectric anisotropy and high clear points; the compound represented by the general formula II provided by the invention is a two ring compound with 2,3-difluorobenzene structures; the structure is the negative dielectric anisotropy liquid crystal compounds; the fluoro ethyoxyl structure is used as the tail end; the dielectric anisotropy of the liquid crystal compound is greatly improved. The liquid crystal medium provided by the invention has low rotary viscosity, good low-temperature mutual solubility and fast response time, is applicable to VAtype liquid crystal display devices such as VA/MVA/PVA/PSVA and IPS and FFS mode liquid crystal display devices; the medium is very effective on the improvement of the response time of the liquid crystal display. (The formulas are shown in the description.).

Description

technical field [0001] The present invention relates to a kind of liquid crystal medium, specifically a kind of nematic phase liquid crystal composition, exactly the liquid crystal composition provided by the present invention has negative dielectric anisotropy, more precisely the liquid crystal composition provided by the present invention The liquid crystal composition contains a liquid crystal compound with a fluoroethoxy structure. The invention belongs to the field of liquid crystal material and its application. Background technique [0002] At present, liquid crystals have been widely used in the field of information display, and at the same time, some progress has been made in the application in 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, e...

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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