Alignment Characteristics of Nematic Liquid Crystal on UV Curable Resin Film with Periodical Groove Structure

Periodical groove structure was formed on the substrate surface by copying the structure on the grating film on the market to the photo curable resin coated on the substrate surface. And then, the substrate surface with groove structure was rubbed along the direction perpendicular to the groove. Alignment of LC on such substrate surface was experimentally investigated. And the occurring of pre-tilt was confirmed. In a cell constructed using such substrate and, for the other side, the substrate treated by a vertical alignment material, distinctive domains with different orientation direction were observed. This suggests us that the bistable alignment property can be adapted on the substrate surfaces by the method above mentioned.