Patent ID: 7727626

Claim:
A light diffusion plate comprising a substrate and a light diffusion layer formed on the substrate, wherein the light diffusion layer comprises at least two layers of a first light diffusion layer containing a first matrix and a first light diffusion agent having a refractive index difference Δn 1 of 0.06 with the first matrix, and a second light diffusion layer disposed upon the first light diffusion layer and containing a second matrix and a second light diffusion agent having a refractive index difference Δn 2 of 0.01 with the second matrix; the volume fraction of the first light diffusion agent in the first light diffusion layer is about 25%, and the volume fraction of the second light diffusion agent in the second light diffusion layer is about 46%; and the total thickness of the light diffusion layers is about 50 μm after curing.