Liquid crystal compound containing difluoromethoxy bridge bond, composition and application thereof

Abstract

The invention relates to a liquid crystal compound containing a difluoromethoxy bridge bond. The liquid crystal compound has a structural general formula shown as the specification, wherein R1 represents -H or alkyl or alkoxy having 1-12 carbon atoms; R2 represents -F, -Cl, -CN, -NCS, -CF3, -OCF3, -OCF2Cl or alkyl or alkoxy having 1-12 carbon atoms; L1, L2, L3 and L4 independently represent -H or -F. The invention also relates to a composition containing the liquid crystal compound. The invention further relates to application of the liquid crystal compound and the composition in the liquid crystal display field. The liquid crystal compound and the composition provided by the invention have excellent dielectric anisotropy, can significantly lower the driving voltage of a liquid crystal display device, and have good application prospects.

Description

technical field [0001] The invention relates to the field of liquid crystal display materials, in particular to a novel liquid crystal compound containing difluoromethoxy bridge bonds and a liquid crystal composition comprising the liquid crystal compound. Background technique [0002] The application of liquid crystal materials as environmental materials in the fields of information display materials and organic optoelectronic materials has great research value and bright application prospects. Liquid crystal materials have many advantages as new display materials, such as extremely low power consumption and low driving voltage. At the same time, compared with other materials, it also has the advantages of small size, light weight, long life, large amount of displayed information, and no electromagnetic radiation. It can almost meet the requirements of various information display, especially in TFT-LCD products. [0003] At present, the technology of TFT-LCD products has m...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the liquid crystal material itself, TFT-LCD still has many defects such as insufficient response, insufficient voltage, and insufficient charge retention rate.

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