Liquid crystal panel and alignment film thereof

摘要

The present invention provides a liquid crystal panel and an alignment film thereof, and the alignment film is made of a modified polyimide which has conjugated double bond at side chain. Resistance value of the alignment film is less than the resistance value of a liquid crystal material of the liquid crystal panel by properties of the conjugated double bond that can reduce the resistance value of a prior art polyimide. In addition, improving the imidization ratio of a modified polyimide alignment film is important. The present invention is conducted the charged ion from liquid crystal layer to the alignment film by the conjugated double bond of the modified polyimide at the side chain to prevent the increase in the ion density of the liquid crystal in part of this area, and improve the problem of image sticking.

主权项

1. A liquid crystal panel, characterized in that: the liquid crystal panel comprises:
a first substrate having a first alignment film; a second substrate having a second alignment film; and a liquid crystal material for filling in a space between the first substrate and the second substrate, wherein the liquid crystal material is in contact with the first alignment film and the second alignment; wherein the first alignment film and the second alignment film are made of a modified polyimide having a structure of conjugated double bond at side chain thereof, and the resistance value of the modified polyimide is less than the resistance value of the liquid crystal material, and the structure of conjugated double bond at the side chain of the modified polyimide has a structural formula (I): wherein n is 1 or an integer greater than 1; and R is H or a carbon chain of C1 to C5; wherein the first substrate is a thin film transistor (TFT) array substrate, and the second substrate is a color filter substrate.