Patent ID: 9057912
Filing Date: 2015-06-16
Classification: G02F,H05B

Abstract:
1. A backlight unit of a flat panel display device comprising: a plurality of thin tube type light sources, the light sources each having a long axis; a cover bottom having bottom surface and four vertical side surfaces and housing the plurality of light sources inside the cover bottom; a printed circuit board (PCB) attached at outside of one vertical side surface of the cover bottom; an LED installed at back side of the PCB facing the outside of the vertical side surface of the cover bottom; and an LED hole formed to penetrate the vertical side surface of the cover bottom for introducing a light from the LED to the light sources, wherein the PCB and the LED are disposed at the one vertical side surface that is parallel to the long axes of the light sources and the LED is disposed at the same height as the plurality of light sources such that the LED is disposed on the same plane as the light sources to face side surfaces of the light sources and irradiates light directly to the light sources without being obstructed by any component between the LED and the light sources along a direction which crosses the long axes of all of the light sources arrayed in the cover bottom, and the light from the LED supplies photoelectrons to all light sources.