Liquid crystal medium mixture and liquid crystal display using same

Abstract

The invention provides a liquid crystal medium mixture and liquid crystal display using the same. The liquid crystal medium mixture comprises the following components: at least one anisotropic liquid crystal material, and two or more polymerizable monomers which can be polymerized under UV (ultraviolet) irradiation, wherein the liquid crystal material comprises an alkenyl compound which is stable to a polymerization reaction during polymerization of the polymerizable monomers; and the polymerizable monomers account for 0.1-1% of the total amount of the liquid crystal medium mixture in part by weight. The liquid crystal medium mixture can be polymerized into polymer bulge with relatively small size and good uniformity by adopting the two or more polymerizable monomers which can be polymerized under the UV irradiation according to a proper ratio, so that poor liquid crystal alignment, and a light spot phenomenon of a liquid crystal panel in the dark state are avoided, thus increasing the response speed of the liquid crystal panel and achieving high contrast and stable massive productivity.

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...

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 usually, a single polymerizable monomer It is difficult to achieve a favorable situation for these factors, and the situation is often that one loses the other, such as the uniformity of the polymer formed but the alignment force is not enough, or the alignment force is strong but the reaction speed is too slow, etc.

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