| abstract |
The transparent resin layers 12 and 13 are laminated on at least one side (particularly, both sides) of the light scattering layer 11. The anisotropic light scattering layer 11 includes a continuous phase and a particulate dispersed phase 14 having different mutual refractive indices, and an average aspect ratio of the particulate dispersed phase 14 is greater than 1 and in the longitudinal axis direction of the particulate dispersed phase. Is oriented in one direction. The laminated film 10 can diffuse incident light in the direction of light propagation, and has light scattering characteristics in a direction orthogonal to Fx (θ) and the principal axis direction of the particulate dispersion phase in the particle dispersed phase. When Fy (θ) is obtained, the light scattering characteristics of Fy (θ) / Fx (θ)> 5 are in the range of θ = 4 to 30 °. According to the laminated film, uniform surface emission is realized with close tolerances, and the laminated film can be stably manufactured for a long time. |