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

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 components of at least one anisotropy liquid crystal material and two polymerizable monomers which can generate polymerization reaction under ultraviolet irradiation. The polymerizable monomers in part by weight occupy 0.1%-1% of a total quantity of the liquid crystal medium mixture. By means of the liquid crystal medium mixture and the liquid crystal display, the liquid crystal medium mixture can be subjected to the polymerization reaction by adopting two or more than two polymerizable monomers which can generate polymerization reaction under ultraviolet irradiation and appropriate cooperation, polymer prominences in small size and good uniformity can be obtained, and poor alignment of liquid crystal and dark state bright spots of a liquid crystal display panel are avoided, thereby a response speed of the liquid crystal display panel is quickened to obtain a high contrast ratio, and stable volume production performance 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...

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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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