| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to obtain a high radiant efficiency of light in a light guide system by arranging the light transmission plate and a discharge lamp adjacent to each other even without changing a structure of the light transmission plate. SOLUTION: An illuminator B1 is provided with a light guide plate 1 having a light emitting surface 2 at least on one surface, and a discharge lamp LA disposed so that a plane formed part L3 formed along the tube axis of a glass tube bulb L1 filled with discharge medium inside and provided with at least a pair of electrodes L5, L5 is arranged to face the side 4A of the light transmission plate 1 with an equal spacing, and moreover, a liquid crystal display device E uses this illuminator B1. |
