| 摘要 |
<p>A backlight unit that while attaining cost reduction, realizes inhibiting of a light quantity decrease in the vicinity of an end portion of light guide plate and achieving of an enhancement of light utilization efficiency. Backlight unit (10, 30, 40, 50) comprises light guide plate (3) provided inside frame (1, 41, 51) and, provided inside the frame, multiple light emitting diodes (4) disposed with given spacings between adjacent diodes so as to be opposite to light incident surface (3a) of the light guide plate. Further, in an area opposite to end portion (3g) of the light incident surface of the light guide plate, there is not disposed any light emitting diode but provided reflection surface (1f, 41g, 31a, 57a) capable of reflecting the light outgoing from the light emitting diodes toward the light incident surface of the light guide plate.</p> |
