| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device of an edge light method using a point light source, the lighting device making unevenness of incident light of a light guide body hard to be visible and preventing moire generated in loading a liquid crystal panel by using an optical film having a large haze value only near the point light source. <P>SOLUTION: A diffusion film 1 having a diffusion pattern with a gradation state is formed by using dots 2, each being formed by dispersing a diffusion agent in a transparent resin, and arranged on an emission surface of the light guide body 4. The diffusion pattern is formed such that a plurality of dots 2 obliquely tied in a rosary shape are arranged so as to be smaller in size as they are separated from an end side of the light source side. <P>COPYRIGHT: (C)2011,JPO&INPIT |
