Liquid crystal composition with low threshold, low power consumption and wide working temperature range for VA-LCD

Abstract

The present invention relates to a low-threshold liquid crystal composition with low threshold, low power consumption and a wide working temperature range for VA-LCD. The composition contains 3-90% ofa compound selected from a formula (I) as a first component; 1-75% of a compound selected from a formula (II) as a second component; 1-75% of a compound selected from a formula (III) as a third component; 1-65% of a compound selected from a formula (IV) as a fourth component; 0-30% of a compound selected from a formula (V) as a fifth component; 0-30% of a compound selected from a formula (VI) asa sixth component; 0-20% by weight of a compound selected from a formula (VII) as a seventh component; 0-20% of a compound selected from formulas (VIII a) and (VIII b) as an eighth component; 0-10% ofa compound selected from formulas (IX a) and (IX b) as a ninth component; 0-20% of a compound selected from formulas (X a) and (X b) as a tenth component; and 0-30% of a compound selected from formulas (XI a), (XI b) and (XI c) as an eleventh component. The composition can still ensure a wide working temperature range under conditions of low threshold and low power consumption.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition for VA-LCD with low threshold, low power consumption and wide temperature range. Background technique [0002] With the continuous development of liquid crystal display technology, liquid crystal display devices are widely used in military, communication, finance, education, scientific research, and large and small electronic equipment, such as vehicles and mobile phones. As the liquid crystal display mode, its representative forms include TN type, STN type, DS type, GH type, IPS type, ECB type, OCB type, VA type, etc. Among them, the VA type driven by AM is particularly used in high-speed, Display elements requiring wide viewing angles, such as television applications, are most anticipated. Therefore, VA-LCD has also become the object of research. The arrangement of liquid crystal molecules in the VA-LCD cell is vertica...

AI Technical Summary

Problems solved by technology

However, there is currently no substance that can satisfy such performance as a single compound. For example, application number 201811168306 discloses a liquid crystal composition for VA-LCD with low threshold, low power consumption, low viscosity and fast response. Low threshold, low power consumption and low viscosity are required, but its working range is relatively narrow -30-50 degrees, which cannot meet the performance requirements of wide temperature -30-80 degrees

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