Nematic liquid crystal composition and application thereof

Abstract

The invention relates to field of liquid crystal display technology, and especially relates to a nematic liquid crystal composition and an application thereof. The nematic liquid crystal composition at least comprises a compound represented by a general formula I: R1 and R2 respectively and independently represent linear alkyl of C1-C12, wherein one or more CH2 which are not adjacent can be substituted by O, S or CH=CH; the composition at least comprises one compound shown in general formula II: R3 and R4 respectively and independently represent linear alkyl of C1-C12, wherein one or more CH2 which are not adjacent can be substituted by O, S or CH=CH; A1 and A2 respectively and independently represent trans-1,4-cyclohexyl or 1,4-phenylene. Preferably, the liquid crystal composition comprises 1-40 parts by weight of the compound represented by the general formula I and 1-60 parts by weight of the compound represented by the general formula II. The liquid crystal composition comprises low rotary viscosity and high elastic constant, and shows shorter response time, so that problem of slow response speed of the liquid crystal display is effectively solved.

Description

technical field [0001] The present invention relates to a liquid crystal composition, specifically a nematic liquid crystal composition, to be exact, 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 provided liquid crystal composition has a fast response time. 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, sensors, etc. Nematic liquid crystal compounds have been most widely used in flat panel displays, especially for TFT active matrix syste...

AI Technical Summary

Problems solved by technology

Restricted by the liquid crystal display itself (the transmittance is low, the absolute transmittance is about 5%), it is necessary to greatly increase the brightness of the backlight module to achieve a good display effect, which greatly increases the power consumption of the backlight module. On the other hand, due to the Flexo effect in the positive FFS display mode (molecules are bent under high voltage, because the FFS electric field has curved electric field lines, the positive liquid crystal molecules are arranged along the direction of the electric field lines) effect, resulting in obvious flickering of the liquid crystal display, Reduce display effect

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