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Liquid crystal medium

A technology of liquid crystal medium and carbon number, applied in liquid crystal materials, optics, instruments, etc., to achieve high resistivity and charge retention, high stability, and short response time

Active Publication Date: 2015-04-22
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far there is no single liquid crystal material used alone in liquid crystal displays that can meet the performance requirements without developing a combination of other performance characteristics

Method used

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  • Liquid crystal medium
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Examples

Experimental program
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Embodiment 1

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Embodiment 2

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Embodiment 3

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Abstract

The invention relates to a liquid crystal medium for a mixture of polar compounds with positive or negative dielectric anisotropy, an application of the liquid crystal medium used for electro-optical purposes, and an electro-optical display containing the medium, which are particularly applied to TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and VA. The liquid crystal medium has wide nematic phase temperature, moderate viscosity, large dielectric anisotropy, high electrical resistivity and charge retention rate, low power consumption, fast response time and high stability to ultraviolet rays and heat. The liquid crystal medium is characterized by comprising one or more compounds of a general formula I, wherein each parameter is defined in the specification. The structural formula is as shown in the specification.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display materials, and relates to a liquid crystal medium and a liquid crystal display containing the liquid crystal medium, in particular to a liquid crystal medium containing a deuterated benzene compound. Background technique [0002] Liquid crystal display (LCD) is widely used to display information, LCD is used for intuitive display, and for projection type display, the electro-optical mode used is divided into TN (twisted nematic twisted nematic), STN (super twisted nematic super twisted nematic) , OCB (optical compensated bend) and ECB (electrically controlled birefringence), VA (vertical alignment) and their variants, and other modes. All of these modes use an electric field that is substantially perpendicular to the substrate, or perpendicular to the liquid crystal layer. In addition to these modes, there are also electro-optical modes using an electric field substantially paralle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/30C09K19/12C09K19/44C09K19/46G02F1/1333
Inventor 崔青徐凯乔云霞李锐温刚丰景义樊洁
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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