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Liquid crystal medium mixture and liquid crystal display using same

A technology for liquid crystal displays and liquid crystal media, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of affecting the reaction and polymerization of polymerizable monomers, affecting the alignment of liquid crystal media, and low rotational viscosity, and achieve mass production. , The effect of improving optical taste and overall performance, and stabilizing mass production

Active Publication Date: 2013-01-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing liquid crystal media generally contain alkenyl compounds, it is beneficial to obtain low rotational viscosity, thereby improving the response of the liquid crystal medium. Improve the response of the liquid crystal medium, and the alkenyl compound contained in the liquid crystal medium is easy to affect the reaction polymerization of the polymerizable monomer, thereby affecting the alignment of the liquid crystal medium, so it is necessary to select a suitable polymerizable monomer to make the uniformity of the polymer Good, strong alignment and fast response

Method used

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  • Liquid crystal medium mixture and liquid crystal display using same
  • Liquid crystal medium mixture and liquid crystal display using same
  • Liquid crystal medium mixture and liquid crystal display using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] The liquid crystal medium mixture adopts negative type liquid crystal material and two kinds of polymerizable monomers, specifically as follows:

[0088] The structure of the liquid crystal material is

[0089] The polymerizable monomer is RM-A1, and the structural formula of RM-A1 is as follows:

[0090]

[0091] The RM-A1 content accounts for 1000ppm of the liquid crystal medium layer. In the liquid crystal medium mixture, the size of the polymer bump generated by ultraviolet irradiation is small and uniform, and there is no phenomenon of bright light in the dark state.

Embodiment 2

[0093] The liquid crystal medium mixture adopts negative type liquid crystal material and a kind of polymerizable monomer, specifically as follows:

[0094] The structure of the liquid crystal material is

[0095] The polymerizable monomer is RM-A2, and the structural formula of RM-A2 is as follows:

[0096]

[0097] The RM-A2 content accounts for 3000ppm of the liquid crystal medium layer. In the liquid crystal medium mixture, the size of the polymer bump generated by ultraviolet irradiation is small and uniform, and there is no phenomenon of bright light in the dark state.

Embodiment 3

[0099] The liquid crystal medium mixture adopts negative type liquid crystal material and a kind of polymerizable monomer, specifically as follows:

[0100] The structure of the liquid crystal material is

[0101] The polymerizable monomer is RM-A3, and the structural formula of RM-A3 is as follows:

[0102]

[0103] The RM-A3 content accounts for 10000ppm of the liquid crystal medium layer. In the liquid crystal medium mixture, the size of the polymer bump generated by ultraviolet irradiation is small and uniform, and there is no phenomenon of bright light in the dark state.

[0104] In summary, the liquid crystal medium mixture for liquid crystal display according to the present invention can control the polymerization reaction to form a The size and uniformity of the protrusions avoid the occurrence of poor liquid crystal alignment and bright spots in the dark state of the liquid crystal panel, so that the liquid crystal panel can obtain good optical performance, suc...

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Abstract

The invention provides a liquid crystal medium mixture and a liquid crystal display using the liquid crystal medium mixture. The liquid crystal medium mixture comprises at least one anisotropic liquid crystal material and a polymerizable monomer which can be polymerized under ultraviolet irradiation; and the polymerizable monomer is 0.1-1% of the total weight of the liquid crystal medium mixture in part by weight. According to the liquid crytal medium mixture and the liquid crystal display using the liquid crystal medium mixture provided by the invention, the liquid medium mixture can be polymerized to obtain polymer prominence which is relatively small in size and high in uniformity by adopting the polymerizable monomer which can be polymerized under ultraviolet irradiation based on proper mixture ratio, so that the phenomena that poor liquid crystal alignment is obtained, and bright spot is generated on a liquid crystal panel under dark state are avoided, and as a result, fast response speed of the liquid crystal panel is obtained as well as high contrast ratio, and stable volume production is achieved.

Description

technical field [0001] The invention relates to liquid crystal display technology, in particular to a liquid crystal medium mixture and a liquid crystal display using the same. Background technique [0002] The liquid crystals used in TN (Twisted nematic) or STN (Super twisted nematic) liquid crystal displays are positive liquid crystals, and the long axis of liquid crystal molecules is parallel to the surface of the substrate when no power is applied. The alignment direction of the liquid crystal molecules on the surface of the substrate is determined by the rubbing direction of the alignment layer (Alignment layer, usually made of Polyimide). In a continuous twisted arrangement. When a voltage is applied, the long axes of the liquid crystal molecules tend to align along the direction of the electric field. The disadvantage of TN / STN liquid crystal displays is that the viewing angle is small, and the brightness difference and color difference are serious under large viewi...

Claims

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Application Information

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IPC IPC(8): C09K19/56G02F1/1333
CPCC09K19/3098C09K2019/0448C09K2019/3009C09K2019/301C09K2019/3422C09K2019/548
Inventor 冯惺钟新辉
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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