A compound containing an indene ring and a liquid crystal medium

Abstract

The present invention relates to a compound containing an indene ring. The compound has the structure of general formula I-1 or I-2. The present invention also relates to a liquid crystal medium, which comprises the above-mentioned compound containing an indene ring as a component of the liquid crystal medium, and further comprises a compound represented by the general formula II and a compound represented by the general formula III. In the present invention, through the optimized combination and optimal ratio of various liquid crystal compounds, through the rational introduction of new functional groups into the structure of single crystal compounds, the compound shown in general formula I introduces an indene ring, which improves the compound's Stability, and effectively improve the clearing point. The invention achieves the effects of proper high-definition bright spots, proper birefringence anisotropy, high dielectric anisotropy, low rotational viscosity, and fast response speed, and is especially suitable for active matrix MVA with low box thickness and high display quality pictures , PVA liquid crystal display components and liquid crystal displays.

Description

technical field [0001] The invention relates to a compound containing an indene ring, and also relates to a liquid crystal medium containing the compound of an indene ring, belonging to the field of liquid crystal display materials. Background technique [0002] As a leader in flat panel display technology, TFT-LCD has gradually occupied the dominant position in the display field. TFT-LCD is currently mostly used in high-end fields with strict viewing angle requirements, such as aerospace, medical, graphics and image processing. However, when viewed from the direction perpendicular to the normal line of the display, the contrast ratio of the display screen decreases significantly, which seriously affects the application field of TFT-LCD. [0003] At present, the more popular wide viewing angle technologies mainly include TN+Wide Film, VA, including PVA, MVA, PSVA, etc., IPS, FFS, etc. Because the vertically oriented liquid crystal display has excellent performances such as...

AI Technical Summary

Problems solved by technology

However, when it is observed away from the normal direction of the display, the contrast of the display screen is significantly reduced, which seriously affects the application field of TFT-LCD.

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