Liquid crystal composition for large-size liquid crystal display element or liquid crystal display

A technology for liquid crystal display elements and liquid crystal compositions, which is applied in the directions of liquid crystal materials, instruments, chemical instruments and methods, can solve the problems of low rotational viscosity performance parameters, difficulty in taking into account low temperature performance, and reduce clearing points, etc., and achieves low rotational viscosity, High reliability, low box thickness effect

Inactive Publication Date: 2021-06-22
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, a variety of liquid crystal compounds have been synthesized, but a single liquid crystal compound cannot meet the performance parameters required by various liquid crystal devices such as large dielectric anisotropy, low rotational viscosity and suitable optical anisotropy, so , the liquid crystal materials used as liquid crystal media are all liquid crystal compositions
Due to the fact that the performance of various aspects of liquid crystal materials is mutually restricted, such as using a low viscosity value can achieve fast response, but at the same time it will reduce the clearing point; increasing the di

Method used

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  • Liquid crystal composition for large-size liquid crystal display element or liquid crystal display
  • Liquid crystal composition for large-size liquid crystal display element or liquid crystal display
  • Liquid crystal composition for large-size liquid crystal display element or liquid crystal display

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Embodiment

[0049] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0050] In this manual, unless otherwise specified, the percentages refer to mass percentages, and the temperature is in degrees Celsius (°C). The specific meanings and test conditions of other symbols are as follows:

[0051] Cp means liquid crystal clearing point (℃), DSC quantitative method test;

[0052] Δn denotes optical anisotropy, n o is the refractive index of ordinary light, n e is the refractive index of extraordinary light, the test condition is 25±2°C, 589nm, Abbe refractometer test;

[0053] Δε means dielectric anisotropy, Δε=ε ∥ -ε ⊥ , where ε ∥ is the dielectric constant parallel to the molecular axi...

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Abstract

The invention belongs to the technical field of liquid crystal materials, and particularly relates to a liquid crystal composition and a liquid crystal display element or a liquid crystal display containing the liquid crystal composition. The invention discloses a liquid crystal composition which comprises at least two of compounds as shown in a formula I, a formula II, a formula III, at least two compounds as shown in a formula IV, at least two of compounds as shown in a formula V and a polymerizable compound as shown in a formula VI. The liquid crystal composition provided by the invention has the characteristics of high dielectric, high K value, low rotary viscosity, high VHR and the like, and can be used for developing liquid crystal display elements or liquid crystal displays with low power consumption, low box thickness, quick response and high reliability. The liquid crystal composition provided by the invention also has a proper pretilt angle, and is especially suitable for large-size panel displays.

Description

technical field [0001] The invention relates to a liquid crystal composition used for a large-size liquid crystal display element or a liquid crystal display, and belongs to the field of liquid crystal materials. Background technique [0002] Currently there are various display modes in the market, and the more competitive display modes mainly include in-plane switching (IPS), fringe field switching (FFS) and vertical alignment (VA) display modes. Among these display modes, in-plane switching (IPS) and fringe field switching (FFS) are characterized by wide viewing angles. When the positive liquid crystal is used in these two types of display modes, it can obtain fast response and has good reliability. When the negative liquid crystal is used in these two types of display modes, it can obtain higher transmittance, but due to the negative The viscosity of the liquid crystal material is relatively large, so the response speed is relatively slow. [0003] The MVA display is di...

Claims

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Application Information

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IPC IPC(8): C09K19/46G02F1/1333
CPCC09K19/46G02F1/1333
Inventor 孙轩非梁瑞祥高红茹张芳苗张海凤潘美达崔青温刚
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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