| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide: a lighting system that needs fewer waste material portion even when a plurality of light guide plates having a projection portion and a concave portion for positioning are cut out from a large plate material; a liquid crystal display device having the lighting system; and an electronic equipment having the liquid crystal display device. <P>SOLUTION: In a light guide plate 80 used for the liquid crystal display device and the lighting system, a concave portion 803a is installed at the side end face 803 on one side X1 in X axis direction and a projection portion 804b is formed at the side end face 804 on the other side X2 in the X axis direction, thereby, by using the concave portion 803a and the projection portion 804b, the light guide plate 80 can be positioned at a prescribed position of a frame body 9. The concave portion 803a and the projection portion 804b are formed at positions where they face each other in the X axis direction, and the dimensions of the projection portion 804b are equal to or smaller than the dimensions of the concave portion 803a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
