Liquid crystal medium mixture, liquid crystal display panel and preparation method of liquid crystal display panel

Abstract

The invention provides a liquid crystal medium mixture which comprises liquid crystal molecules, an active monomer and a vertical orientation agent, wherein the vertical orientation agent comprises ahead group, a middle group, a tail group, a polymerization group and a polymerization inhibition function group; the head group is anchored on the surface of a substrate of a liquid crystal display panel, and then a vertical orientation function on the liquid crystal molecules can be achieved; the middle group and the tail group are used for leading liquid crystal molecule arrangement; the polymerization group is used for forming a polymer granule membrane layer under ultrasonic light radiation, and then the liquid crystal molecules have pretilt angles. Due to adoption of the polymerization inhibition function group, polymer granules formed under ultrasonic light radiation are uniform in size distribution by reducing reaction activity of the polymerization group, then broke bright points can be reduced, and the surface capability of the substrate of the anchored liquid crystal display panel can be improved. By adopting the liquid crystal medium mixture, the anchoring capability of thevertical orientation agent in the liquid crystal layer and the uniformity of the polymer granules formed through polymerization reactions under UV (Ultraviolet) radiation can be improved, then the liquid crystal orientation stability can be improved, and phenomena of dark states and easy light leakage can be avoided.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal medium mixture, a liquid crystal display panel and a preparation method of the liquid crystal display panel. Background technique [0002] The structure of the liquid crystal display panel is mainly composed of a thin film transistor array (Thin Film TransistorArray, TFT Array) substrate, a color filter (Color Filter, CF) substrate, and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. Its working principle is to control the rotation of the liquid crystal molecules LC in the liquid crystal layer by applying a driving voltage on the two glass substrates, and refract the light from the backlight module to produce a picture. [0003] Usually, the upper and lower substrate surfaces of the liquid crystal display panel need to be sprayed with a layer of polyimide (PI) alignment material, which is mainly used to guide the ...

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Problems solved by technology

[0005] However, there are the following problems in the vertical alignment liquid crystal material display panel prepared from the liquid crystal layer by the traditional vertical alignment agent: on the one hand, the anchoring ability of the vertical alignment agent on the substrate surface of the liquid crystal display panel needs to be improved, and the diffusivity of the liquid crystal needs to be increased to further reduce the occurrence of chromatic aberration Probability; on the other hand, the polymer particles formed by the vertical alignment agent are large and uneven, which may easily cause poor alignment stability of the liquid crystal, resulting in a dark state of the liquid crystal display panel and easy light leakage, making the liquid crystal display panel less reliable

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