A light diffusion plate in which the adhesiveness, particularly long term adhesiveness, between a glass substrate and a light diffusion layer is good; a coating solution for forming light diffusion layer to be employed for producing this light diffusion plate; and a transmission screen, a rear projection type projection TV and a backlight unit for liquid crystal display employing this light diffusion plate; are provided. A coating solution for forming light diffusion layer, containing a binder, a light diffusion material and a compound containing a reactive silyl group and an epoxy group.