Liquid crystal composition with high reliability and application thereof

Abstract

The invention provides a liquid crystal composition with the high reliability and application thereof. The liquid crystal composition is prepared from, by weight, 5-40 parts of a compound represented by the general formula I (the formula is shown in the description), 20-70 parts of a compound represented by the general formula II (the formula is shown in the description), 1-40 parts of a compound represented by the general formula III (the formula is shown in the description) and 0-30 parts of a compound represented by the general formula IV (the formula is shown in the description). The liquid crystal composition has the high voltage holding ratio, the low ion concentration, the excellent light stability, the appropriate optical anisotropy, the good low-temperature intersolubility, the high elastic constant and the good thermal stability and can effectively solve the reliability problem of a liquid crystal display, effectively solve the residual image problem of the liquid crystal display, improve the display quality of the liquid crystal display and prolong the service life of the liquid crystal display. Therefore, the liquid crystal composition is suitable for high-reliability TN, IPS and FFS type TFT liquid crystal display devices and especially suitable for IPS and FFS type liquid crystal display devices.

Description

technical field [0001] The invention relates to a liquid crystal composition and belongs to the field of liquid crystal display materials. Background technique [0002] At present, liquid crystals are 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. For this reason, many different structures have been proposed, especially in the field of nematic liquid crystals, and nematic liquid crystal compounds have been most widely used in flat panel displays so far. Especially for TFT active matrix systems. [0003] Liquid crystal display has experienced a long development path with the discovery of liquid crystal. In 1888, the Austrian ...

AI Technical Summary

Problems solved by technology

However, the afterimage problem still plagues the liquid crystal display industry. Specifically, the afterimage problem of liquid crystals mainly comes from the impedance characteristics of liquid crystal materials, voltage retention rate (VHR), ion content (ION), and the impact of light and heat. Reasons such as the decrease of voltage retention rate and the increase of ion content

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