| abstract |
The light-extraction film for EL includes a diffusion layer and a concavo-convex structure layer, wherein the diffusion layer includes first light diffusion fine particles, the irregular structure layer includes second light diffusion fine particles as needed, and Px-Py (Px represents a content rate of the first light diffusion fine particles with respect to the total mass of the diffusion layer, and Py represents a content rate of the second light diffusion fine particles with respect to the total mass of the uneven structure layer). |