Liquid crystal composition

Abstract

The invention provides a liquid crystal composition, containing the following components in percentage by weight: (1) 1-60wt% of one or more compounds with a type-I structure, and (2) 1-60wt% of one or more compounds with a type-II structure. The composition provided by the invention may further contain (3) 0-40wt% of one or more compounds with a type-III structure, (4) 0-40wt% of one or more compounds with a type-IV structure, (5) 0-40wt% of one or more compounds with a type-V structure, (6) 1-40wt% of one or more compounds with a type-VI structure, (7) 1-40wt% of one or more compounds with a type-VII structure, and other optically active components accounting for 0.05-0.5% of the total weight of the other components. The composition provided by the invention has an excellent performanceof applying to a TFT (thin film transistor) liquid crystal display screen of the modes such as TN (twisted nematic), IPS (in-plane switching), FFS (fringe field switching), ADS (advanced super dimension switching) or OCB (optically compensated birefringence); and the preparation method is simple and easy in operation.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a nematic liquid crystal composition with fast response, high charge retention rate and good UV resistance. The composition is applied in modes such as TN, IPS, FFS, ADS or OCB field of TFT displays. Background technique [0002] In 1888, Austrian botanist Friedrich Reinitzer discovered liquid crystals. Since then, the research and application of liquid crystals have developed rapidly, especially after W. Helfrich and M. Schadt discovered the field effect of twisted nematic liquid crystals in 1971, which made liquid crystal display technology possible. accomplish. [0003] There are two drive methods for liquid crystal displays: passive matrix (also known as passive matrix (Passive Matrix, PM) or simple matrix) and active matrix (also known as active matrix (Active Matrix, AM)). Active matrix liquid crystal displays can be divided into two types according to the type of ...

AI Technical Summary

Problems solved by technology

The process of the two-terminal active mode is relatively simple, but the image quality is worse than that of the three-terminal active mode, and it is almost eliminated at present.

But for present TFT display, the liquid crystal material of preparation TFT display still has the problems such as high viscosity, slow response time, low charge retention rate and bad anti-ultraviolet performance, proposes the composition of liquid crystal compound with better performance for The development of TFT-LCD is very important

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