| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to display a clear image by increasing the luminance while maintaining the contrast nearly equal to that of a conventional backlight type liquid crystal display module. SOLUTION: The cross sectional shape of a diffusion layer 7 of a second reflecting face 9a is formed to be a long side face of sawtooth shape, and the inclination angle of the second reflecting face 9a is formed to be an angle at which an emission light can be reflected at a reflection angle of about 0-degree. |
