| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a backlight capable of widely maintaining a range of viewing angle dependency of luminance in the designated axis direction. <P>SOLUTION: The backlight includes a surface light source, a lenticular lens sheet 31, and a diffusion sheet 32. The surface light source includes a plurality of linear light sources juxtaposed each other, and a diffusion plate. The lenticular lens sheet 31 is laid on the surface light source, and includes a plurality of cylindrical lenses arranged in parallel with the linear light sources. The diffusion sheet 32 is laid on the lenticular lens sheet, and has the whole light transmission rate of 80% or more and a haze of 80% or more. <P>COPYRIGHT: (C)2009,JPO&INPIT |
