| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress increase in weight of overhead backlight. <P>SOLUTION: In the overhead backlight where a light source 7 is arranged behind a light diffusion surface member 9, the light diffusion surface member 9 constituted only of a sheet material of less than 1 mm thickness, and the sheet material 9 includes a low transmittance diffusion sheet where the total light transmittance is 10-50%. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
