Liquid crystal composition with high transmittance and display device thereof

Abstract

The present invention provides a liquid crystal composition with positive dielectric anisotropy, comprising: one or more compounds selected from compounds expressed in general formula I, general formula II, and general formula III, and a combination thereof as a first component; one or more compounds selected from compounds expressed in general formula IV, general formula V, and general formula VI, and a combination thereof as a second component, the dielectric anisotropy of the first component being positive, and the dielectric anisotropy of the second component being negative. The liquid crystal composition not only maintains advantages such as fast response, a low drive voltage, a high clearing point, low rotary viscosity, appropriate optical anisotropy and appropriate dielectric anisotropy of IPS liquid crystal, but also significantly improves the transmittance of the liquid crystal display. Compared with existing IPS liquid crystal with positive dielectric anisotropy, the liquid crystal composition can improve the transmittance by 5 to 20%. The present invention further provides a liquid crystal display including the liquid crystal composition of the present invention and having an IPS display mode.

Description

technical field [0001] The present invention relates to a liquid crystal composition, in particular to a liquid crystal composition for electro-optical purposes and a liquid crystal display comprising the liquid crystal composition, in particular to a display comprising the liquid crystal composition active matrix addressing and in-plane switching ( IPS) type monitor. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) has achieved rapid development because of its small size, light weight, low power consumption and excellent display quality, and has been widely used in portable electronic information products. With the increase in the size of LCD screens for portable computers, office applications, and video applications, there are still several issues that need to be resolved in order for LCDs to be used for large-screen displays and eventually to replace cathode ray tube displays (CathodeRayTube, CRT). . Such as improving viewing angle char...

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Problems solved by technology

[0008] The patent CN101270287A applied by Samsung Electronics on February 20, 2008 once disclosed a solution for mixing positive and negative liquid crystals, but it only mentioned adding positive components to negative liquid crystals, and the liquid crystals as a whole are still negative

Chisso Co., Ltd. also disclosed an experimental scheme for mixing positive and negative liquid crystals in the patent application JP2002156619A on November 21, 2000. The above two schemes did not mention in detail the doping of a small amount of negative liquid crystals in the positive liquid crystals. Improvement effect of monomer on transmittance of IPS liquid crystal display

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