| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light guide plate including reflecting portions arranged according to a dot pattern capable of effectively improving the emission energy. <P>SOLUTION: The light guide plate includes: an incident surface; a light emitting surface; and a plurality of recessed reflecting portions 60. The incident surface is an end surface, into which the light from a light source enters. The light emitting surface is a surface facing a thickness direction, from which the light entered through the incident surface goes out. The plurality of recessed reflecting portions 60 are respectively formed into a truncated conical shape for reflecting the light entered through the incident surface toward a light emitting surface side. The plurality of recessed reflecting portions 60 are arranged on a plurality of virtual straight lines 90 inclined against a direction (Y-direction) orthogonal to the incident surface with a view from the light emitting surface. The plurality of recessed reflecting portions 60 are arranged so that the centers of the recessed reflecting portions 60 adjacent to each other in the direction (Y-direction) orthogonal to the incident surface do not coincide with each other with a view from the incident surface. <P>COPYRIGHT: (C)2011,JPO&INPIT |
