| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet which has a simple structure, which is not susceptible to a use environment change and with which brightness of a display surface is made uniform by always performing uniform illumination, an optical sheet unit, a surface light source device and a transmissive display device. <P>SOLUTION: A light source 30, a diffusion sheet 21, a lenticular lens sheet 22 and a liquid crystal display part 10 are arranged in this order. The diffusion sheet 21 is curved so as to be convex toward the liquid crystal display part 10 side. Also stiffness of the diffusion sheet 21 is made to be higher than that of the lenticular lens sheet 22 and lower than that of the liquid crystal display part 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
