Material for alignment layer of liquid crystal display

摘要

The present invention provides a material for alignment layer of liquid crystal display, which includes a solvent and a polymer dissolved in the solvent. The polymer includes a backbone and a first side chain linked to the backbone. The first side chain has a stronger lateral dipole moment. The material for alignment layer of liquid crystal display is characterized in that a first side chain that contains both a flexible chain segment and rigid chain segment is linked to the backbone of the polymer and the first side chain has a stronger lateral dipole moment, making it taking a rotation or tilting motion under the application of an electric field so as to effect alignment of the liquid crystal molecules in the pre-tilt angle.

主权项

1. A material for alignment layer of liquid crystal display, comprising a solvent and a polymer dissolved in the solvent, the polymer comprising a backbone and a first side chain linked to the backbone, the first side chain having a stronger lateral dipole moment;
wherein the backbone of the polymer comprises a structure of polyimide or polyamic acid, which has the following formula: wherein the ring A and ring B are benzene rings, aromatic rings, or fused-ring aromatic compounds; X and Y are linking moieties; and n and m represent the degree of polymerization, the values of n and m being in a range of 20 to 2000.