A light diffusion module and a back light module using the same. The light diffusion module is disposed corresponding to the light source module of the back light module. The light diffusion module includes a first diffusion layer and the second diffusion layer. The first diffusion layer is disposed...http://www.google.ca/patents/US7940352?utm_source=gb-gplus-sharePatent US7940352 - Light diffusion module and a back light module using the same
