| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface light source device capable of reducing the color tone and the unevenness of color tone even in using a point light source. SOLUTION: In this surface light source device where the light is entered from plural point light sources 2... mounted on one of side end surfaces of a light guide plate 1, and reflected by a reflecting surface 11 at a rear surface of the light guide plate 1, and the light is emitted from the surface of the light guide plate 1, and the point light sources 2 are formed of white light-emitting diode elements, and two white diode elements among six white diode elements, having chromaticity furthermost from the center of a target chromaticity range in the directions of color phases mutually contradictory, are located at an approximate center of a group of white diode elements. |
