Patent ID: 8574689
Filing Date: 2013-11-05
Classification: C09K,G02B,G02F

Abstract:
1. An O-plate, comprising: a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that comprises a polyvinyl alcohol (PVA); 13 to 25% by weight of an acrylate monomer based on the weight of the polyvinyl alcohol; 20 to 30% by weight of a compatibilizing agent based on the weight of the acrylate monomer; 10 to 50% by weight of an aqueous photo initiator based on the weight of the acrylate monomer; and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film, wherein the solvent comprises a mixture of water and alcohol, and the water to alcohol ratio of the solvent is 40:60 to 50:50, wherein the compatibilizing agent is poly(4-vinylphenol), and wherein the substrate comprises triacetyl cellulose or a cycloolefin polymer (COP).