Cyclopropyl ether-containing negative dielectric liquid crystal composition and its application

Abstract

The invention relates to the field of liquid crystal materials, in particular to a cyclopropyl ether-containing negative dielectric liquid crystal composition and application thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I which is described in the specification and at least one compound as shown in a general formula II which is described in the specification, wherein the compound as shown in the general formula I is a compound containing cyclopropyl ether and has great negative dielectric anisotropy, and the compound as shown in the general formula II is a dicyclic compound and has low rotary viscosity. The composition may further comprise at least one compound as shown in a general formula III which is described in the specification, wherein the compound as shown in the general formula III is a tricyclic neutral compound and has low rotary viscosity and a high clearing point. The liquid crystal composition provided by the invention can be used for fast-response liquid crystal displays of a plurality of display modes; and when applied to displays of VA modes such as VA, MVA, PVA and PSVA or to displays of an IPS or FFS mode, the liquid crystal composition can obviously improve the display effect of the liquid crystal displays.

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 specifically, the liquid crystal composition provided by the present invention contains cyclopropyl compound . 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 crystal compounds have been most widely used in flat panel displays, especially for TFT active The matrix system. [0003] At present, negative liquid crystals are widely used in large-size TV LCD...

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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