Nematic liquid crystal composition containing fluoroethoxy structure and application of nematic liquid crystal composition

Abstract

The invention relates to the field of liquid crystal display, and particularly relates to a nematic liquid crystal composition containing a fluoroethoxy structure. The nematic liquid crystal composition contains at least one compound represented by a general formula I and at least one compound represented by a general formula II, wherein the compound represented by the formula I is a liquid crystal compound which is of a 2, 3-difluorobenzene structure, the compound has relatively great negative dielectric anisotropy and a high clearing point; and the compound represented by the formula II is abicyclic liquid crystal compound having 2, 3-difluoro-1, 4-phenyl, and a terminus is of a fluoroethoxy structure for greatly improving dielectric anisotropy of the liquid crystal compound. The liquidcrystal composition provided by the invention has low rotational viscosity, excellent low-temperature intersolubility and fast response, is suitable for VA-type liquid crystal display devices such asVA/MVA/PVA/PSVA as well as IPS and FFS mode liquid crystal display devices, and is very effective for improving the response time of liquid crystal displays.

Description

Technical field [0001] The present invention relates to a liquid crystal medium, specifically a nematic liquid crystal composition. Specifically, the liquid crystal composition provided by the present invention has negative dielectric anisotropy, and more precisely, the liquid crystal composition provided by the present invention The liquid crystal composition contains a liquid crystal compound having a fluoroethoxy structure. It belongs to the field of liquid crystal materials and their applications. Background technique [0002] At present, liquid crystal has been widely used in the field of information display, and at the same time the application in optical communication has also made certain progress (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-optical devices, electronic components, sensors, etc. Nematic liquid cryst...

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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