Reactive vertical orientation material, liquid crystal display panel and liquid crystal orientation method

Abstract

The invention provides a reactive vertical orientation material, a liquid crystal display panel and a liquid crystal orientation method. The structural general formula of the reactive vertical orientation material is A-Z-R, wherein A refers to -CH=CH-COOH, Z is shown in the description and n is larger than or equal to 1; R refers to a linear alkyl with 5-20 C atoms or branched alkyl, and a certain CH2 group in alkyl is a group substituted by a phenyl group, a naphthenic base, -CONH-, -COO-, -O-CO-, -S-, -CO- or -CH=CH- or a certain H atom in alkyl is a group substituted by an F or Cl atom. The head group A plays the main effect of anchoring, can be anchored on the surface of a base plate by depending on -COOH in a physical action manner on one hand, and can further enhance the capacity of anchoring liquid crystal molecules by depending on -CH=CH- or reaction between -CH=CH- and a reactive monomer; the middle group Z and the tail group R can play the effect similar to a PI branch, so as to realize vertical orientation of liquid crystal molecules in a steric hindrance manner.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a reactive vertical alignment material, a liquid crystal display panel, and a liquid crystal alignment method. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, TVs, personal digital assistants due to their advantages of high image quality, power saving, thin body and wide application range. , digital cameras, notebook computers, desktop computers and other consumer electronics products have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass subs...

AI Technical Summary

Problems solved by technology

The main component of this kind of alignment film is rubbing alignment type PI material or photo alignment type PI material, but no matter which alignment material has its own disadvantages

First of all, friction-aligned PI materials are likely to cause problems such as dust particles, static electricity residues, brush marks, etc., thereby reducing the process yield, while photo-aligned PI materials can avoid these problems, but due to limited material properties, heat resistance and aging resistance Poor, and the ability to anchor LC molecules is also weak, which affects the quality of the panel; secondly, PI material itself has high polarity and high water absorption, storage and transportation are easy to cause deterioration and lead to uneven alignment, and PI The material is expensive, and the process of forming a film on TFT-LCD is also relatively complicated, which leads to an increase in the cost of the panel

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