| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem of light emitted from a point-light source: it is necessary to increase diffusion of light by elongating an optical path of a light guide plate, with the result that an area of the light guide plate cannot be decreased and that the range of a display image capable of adjusting the luminance of a backlight cannot be decreased. <P>SOLUTION: Light-emitting elements 300 each having a planar light-emitting region are arranged opposite to each other so that a planar overlapping region is maximized for each opening KB. Light emitted by each light-emitting element is reflected by a second sectional surface 220 of the opening KB and can be incident on the entire range of a first sectional surface 210 in Y direction as continuous light. As a result, illuminating light can be made into uniform light even if the length of a light guide region from the first sectional surface 210 is short. Also, a display region HR can be illuminated by the light emitted from the light-emitting element 300 disposed at each opening KB, in such a way that regions having almost the same length W as a surface region in the Y direction and having predetermined intervals L in X direction form one illuminated region. <P>COPYRIGHT: (C)2010,JPO&INPIT |
