| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a double-sided light emission type illumination device wherein the reflection of a light source from a rear surface side in a light emission region is prevented. <P>SOLUTION: In the illumination device, light guide plates 122 and 142 are mutually arranged back to back, a light source 141 of the light guide plate 142 is arranged in the position two-dimensionally superposed on the light guide plate 122, a double-sided reflection sheet 102 having a metal reflection film and a plurality of resin layers sandwiching the metal reflection film is arranged on facing surface sides of the light guide plates 122 and 142, and the metal reflection film has 90 to 300 nm film thickness. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
