| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a diffusion plate for a direct backlight type liquid crystal display, which can completely remove lamp variations while preventing luminance drops. <P>SOLUTION: The diffusion plate is loaded on the direct backlight type liquid crystal display configured by successively arranging a reflector, linear light sources, the diffusion plate, an optical film, and a liquid crystal panel. In the diffusion plate, a linear prism shape with an apex angle of 50° to 150° is formed on the surface of the diffusion plate, which is the contact side with the optical film, and linear lens shapes whose height is 0.2 to 20 μm are formed on the surface of the diffusion plate, which is the side opposed to the linear light sources. <P>COPYRIGHT: (C)2009,JPO&INPIT |
