| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thin and lightweight planar light source device without causing luminance irregularity; and to provide a display device. <P>SOLUTION: A plurality of light guide rods 1 are arranged in parallel with one another in a metal casing having an opening used for a light emission surface 21 on its upper surface, and point light sources (LEDs) 2 facing to end surfaces 1a of the light guide rods 1 through space are arranged. In this planar light source device 20 equipped with a light source unit 3 composed of the light guide rods 1 and the point light sources 2 like the above, since leak current is not generated between the light guide rods 1 and the metal casing (second frame 8), the distance between each light guide rod 1 and the frame 8 can be reduced. The light guide rod 1 constituting the light source unit 3 is small in volume and lightweight as compared with a conventional light guide plate and a fluorescent tube is not used as a light source, so that mercury being an environmental load substance is not included. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
