ILLUMINATING LIGHT TRANSMISSION PLATE FOR LIQUID CRYSTAL DISPLAY DEVICE AND ITS MANUFACTURE

摘要

PURPOSE: To provide the light transmission plate of an edge light type back light device used for the back illumination of a liquid crystal device where a number of parts is reduced and mass-production is allowed with low cost and its manufacturing method. CONSTITUTION: Light diffusion film 2 is integrated on the lower surface of a light transmissive light transmission plate 1, and prism shape is formed on the other surface of the light transmission plate 1 of the liquid crystal display device. The light diffusion film 2 where a light diffusion layer 3 is formed on the one side of a light transmissive base material 4 is fixed inside of an injection molding metallic mold making a light transmission base material surface be on the side of a metallic mold, and a light transmissive resin is injected and molded, so that the light diffusion film 2 is integrated with the light transmission plate 1 by the manufacturing method of the illuminating light transmission plate of the liquid crystal display device.