Liquid-crystal composition containing fluoroethoxy compound and application of liquid-crystal composition

Abstract

The invention relates to a liquid-crystal composition containing a fluoroethoxy compound. The liquid-crystal composition comprises at least one compound represented by a general formula I shown in thedescription and at least one compound represented by a general formula II shown in the description. According to the liquid-crystal composition, the compound represented by the general formula I is atricyclo compound with a 2,3-difluorobenzene structure, the structure is a liquid crystal compound with negative dielectric anisotropy and has high negative dielectric anisotropy, the negative dielectric anisotropy of the liquid-crystal composition can be effectively improved, the consumption of polar monomers is lowered, the consumption of low-viscosity monomers is increased, the rotational viscosity of the system is lowered, and the response time is shortened; and the compound represented by the general formula II has relatively high negative dielectric anisotropy and excellent intersolubility. The liquid-crystal composition provided by the invention has low rotational viscosity, good low-temperature intersolubility and rapid response time and is applicable to VA liquid-crystal displaydevices such as VA / MVA / PVA / PSVA and IPS and FFS mode liquid-crystal display devices. The liquid-crystal composition is very effective to improvement on response time of liquid-crystal displays.

Description

technical field [0001] The present invention relates to a kind of liquid crystal composition, 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, senso...

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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