Patent ID: 6582775
Filing Date: 2003-06-24
Classification: C09K,G02B

Abstract:
A process for making an optical compensator comprising the steps of:a) applying a liquid composition, comprising a photo-orientable resin in a solvent, to form a resin-containing coating on a continuous support; b) drying the resin-containing coating for a period of 4 seconds to 10 minutes; c) orienting the resin-containing layer in a predetermined direction by photo-alignment to form an orientation layer; d) heat treating the orientation layer, after the alignment treatment, comprising heating the orientation layer between 25Â° C. and 300Â° C. for a period of at least 30 seconds; e) applying a liquid comprising a liquid-crystal compound in a solvent carrier onto the orientation layer on a transparent support to form a liquid-crystal-containing coating; f) drying the liquid-crystal-containing coating, thereby forming a liquid-crystal-containing layer.