Liquid crystal composition

Abstract

The invention discloses a liquid crystal composition comprising one or more compounds represented by a formula I and one or more compounds represented by a formula II. The liquid crystal composition comprises a compound represented by II-A. Definitions for all substituents are given. The composition provided by the invention has low viscosity gamma1, moderate dielectric anisotropy Delta epsilon, and moderate optical anisotropy Delta n. With the composition, liquid crystal display fast response can be realized.

Description

Technical field [0001] The present invention relates to the field of liquid crystal display, in particular to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. Background technique [0002] At present, the application range of liquid crystal compounds is expanding wider and wider, and it can be applied to various types of displays, electro-optical devices, sensors, etc. There are many types of liquid crystal compounds used in the above display fields, and nematic liquid crystals are the most widely used. Nematic liquid crystals have been used in passive TN, STN matrix displays and systems with TFT active matrix. [0003] For the application field of thin film transistor technology (TFT-LCD), although the market has been very huge in recent years and the technology has gradually matured, people’s requirements for display technology are also increasing, especially in achieving rapid response and red...

AI Technical Summary

Problems solved by technology

Small changes in liquid crystal molecules will cause obvious changes in the performance of conventional parameters of liquid crystals. Some of these changes have certain rules, and some seem to be difficult to find the rules. They will also have obvious effects on the interaction between liquid crystal molecules. These effects are very Subtle, so far there is no perfect theoretical explanation

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