Patent ID: 8325293
Filing Date: 2012-12-04
Classification: G02B,G02F

Abstract:
1. A method for producing a light scattering film, comprising: casting onto a support a dope containing at least a thermoplastic resin and light transmitting particles to provide a casted film, and peeling and drying the casted film to prepare a light transmitting base material; applying an coating solution containing at least a curable compound, a polymerization initiator, and a solvent onto the light transmitting base material and drying the solvent; and curing the curable compound to form a cured layer, wherein at least one surface of the light transmitting base material has an asperity shape, the light transmitting particles have an average primary particle size greater than 2.5 μm but not greater than 12 μm, the cured layer has an average thickness of 0.1 μm or greater but not greater than 10.0 μm, and the cured layer satisfies formulae (1) to (3): wherein Ra represents an arithmetic average roughness of the cured layer, Sm represents an average peak-to-valley distance of a surface of the cured layer, and θa represents an average inclination angle of the surface of the cured layer, each based on JIS B 0601.