| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a backlight unit of direct-lit type using LED light sources employed for a liquid crystal display device, in which brightness is uniform all the way to a diffusion panel. <P>SOLUTION: This backlight unit is equipped with an LED substrate 11, a frame 20 onto which the LED substrate is mounted, a reflector sheet 12 furnished on the frame 20 for reflecting light from an LED 1, and a diffuser panel 30 for diffusing light from the LED 1 and the reflector sheet 12. The LED 1 is an LED of side-view type, the optical axis thereof being generally parallel to the reflector sheet 12 or the diffuser panel 30. Between the reflector sheet 12 and the diffuser panel 30 at a position frontward from the light emission surface of the LED 1, a gap of predetermined distance in a direction perpendicular to the reflecting face of the reflector sheet 12 is furnished by a spacer 16. <P>COPYRIGHT: (C)2013,JPO&INPIT |
