Patent ID: 8491973
Filing Date: 2013-07-23
Classification: C08G,C09K,G02F,G03F

Abstract:
1. A photo-alignment material, for aligning liquid crystal, having a photo-reactive ethenyl group in a polymer main chain, wherein the polymer is according to formula 1: wherein subscripts a, b, and c denote a component ratio of respective monomers, wherein 0<a≦1, 0<b<1, and 0<c<1; wherein component A is a monomer having the photo-reactive ethenyl group of formula 2, and the monomer having a photo-reactive ethenyl group of formula 2 can be substituted with at least one selected from the group consisting of a halogen, a cyano, a nitro, an amino group, an alkyl, a haloalkyl, a cyanoalkyl group having 1 to 10 carbons, an aryl, an alkyl aryl, a haloaryl, a haloalkyl aryl, a nitroaryl, and a cyanoaryl group having 3 to 8 carbons; wherein formula 2 is selected from a group consisting of: wherein component B and C are monomers having a non-photosensitive component of formula 3, and the monomers having a non-photosensitive component of formula 3 can be substituted with at least one selected from the group consisting of a halogen, a cyano, a nitro, an amino group, alkyl, a haloalkyl, a cyanoalkyl, alkylaryl, a haloaryl, a haloalkylaryl a nitroaryl, a cyanoaryl; wherein formula 3 is selected from a group consisting of: wherein n is integer of 1˜10.