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Nematic liquid crystal composition and display element thereof

A technology of liquid crystal composition and liquid crystal compound, which is applied in the direction of liquid crystal materials, optics, instruments, etc., and can solve problems such as the inability to solve the demand for the working environment temperature of wide-temperature or even ultra-wide-temperature display devices, display device damage, and failure to display normally. , to achieve low viscosity, improved low-temperature compatibility, and large dielectric anisotropy

Active Publication Date: 2014-10-08
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Although the disclosed liquid crystal composition has the advantages of low rotational viscosity and fast response, the low-temperature storage temperature of the liquid crystal in the disclosed embodiment is generally -20°C, which cannot solve the problem of wide-temperature or even ultra-wide-temperature display devices to the working environment temperature. need
At extremely low temperatures, the mixed liquid crystal material crystallizes, resulting in abnormal display and even damage to the display device

Method used

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  • Nematic liquid crystal composition and display element thereof
  • Nematic liquid crystal composition and display element thereof
  • Nematic liquid crystal composition and display element thereof

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Embodiment 1

[0102]

[0103] The formulation in this embodiment has a wide range of liquid crystal phases, large dielectric anisotropy and extremely low threshold voltage, and is suitable for low voltage driven TN type, IPS type and other display application requirements.

Embodiment 2

[0105]

[0106] The formula has a wide liquid crystal temperature range and very large dielectric anisotropy, and is suitable for low-voltage-driven TN-type, IPS-type and other display applications.

Embodiment 3

[0108]

[0109]

[0110] The low-temperature storage temperature of the formula can reach below -45°C, the clearing point can reach 100°C, and it has extremely low rotational viscosity and high dielectric anisotropy value, which can meet the application requirements of ultra-wide temperature liquid crystal display.

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Abstract

The invention discloses a nematic liquid crystal composition. The nematic liquid crystal composition contains one or more compounds represented by a structural general formula (1) shown in descriptions, wherein R is C1-9 straight-chain alkane. The nematic liquid crystal composition has the characteristics of wide liquid crystal phase region, good low-temperature storage performance, high dielectric anisotropy and good photo-thermal stability, is applicable to TFT (Thin Film Transistor) liquid crystal display and particularly is applicable to liquid crystal display modes, such as IPS, FFS, TN and OCB. A liquid crystal display element which has the advantages of wide operating temperature range, short response time and high reliability is provided.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, in particular to a nematic liquid crystal composition and a display element thereof, which are mainly used in liquid crystal displays. Background technique [0002] Liquid crystal displays have the advantages of flat panels, low power consumption, light weight, and no radiation, and are developing rapidly in the field of information display. Liquid crystal displays utilize the properties of optical anisotropy and dielectric anisotropy of liquid crystal materials to realize display functions. Classified according to the display mode, there are twisted nematic (TN), super twisted nematic (STN), dynamic scattering mode (DSP), thin film transistor driving mode (TFT) and so on. TFT liquid crystal display can realize full color, high resolution, wide viewing angle, fast response, etc. It has been widely used and is the most important display technology in the market at present. [00...

Claims

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Application Information

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IPC IPC(8): C09K19/44G02F1/1333
Inventor 安忠维李建李娟利胡明刚杨晓哲杨志车昭毅莫玲超张璐
Owner XIAN MODERN CHEM RES INST
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