| 摘要 |
PURPOSE: A backlight unit for liquid crystal display device is provided to secure diffusivity while having high light concentration capacity in a front direction of a liquid crystal display panel. CONSTITUTION: A light source is arranged in one side of a light guide plate. An optical sheet(OPT) is arranged in upper side of the light guide plate. A light diffusion lens film is arranged on the optical sheet. A low refractive layer and a high refractive layer of the optical sheet have a boundary surface of a lenticular prism pattern. The low refractive layer and the high refractive layer are a laminated film type. |
