Patent ID: 7033638
Filing Date: 2006-04-25
Classification: C08J,C09D,G02B,H01J,Y10T

Abstract:
1. A process for producing an antiglare film, comprising: coating a surface of a substrate with a coating composition; and drying the coating composition to form an antiglare film having concaves and convexes on a surface opposite from the substrate; wherein: the coating composition comprises non-agglomerative light-transparent fine particles, a light-transparent resin, a good solvent for the light-transparent resin, and a poor solvent for the light-transparent resin; the light-transparent fine particles have a particle diameter of 1.0 to 5.0 μm; a difference in optical refractive index between the light-transparent fine particles and the light-transparent resin is 0.05 to 0.15; the light-transparent fine particles are present in the coating composition in an amount of 5 to 30 parts by weight per 100 parts by weight of the light-transparent resin; the good solvent and the poor solvent are together present in the coating composition in an amount of 20 to 1,000 parts by weight per 100 parts by weight of the light- transparent resin; a ratio of a weight of the good solvent to a weight of the poor solvent is from 100:20 to 100:70; a center line average roughness (Ra) of the antiglare film is 0.12 to 0.30 μm; a ten-point average roughness (Rz) of the antiglare film is 1.0 to 2.9 μm; and the antiglare film has a thickness 1 to 3 times the particle diameter of the light-transparent fine particles.