Patent ID: 9645302
Date: 2017-05-09
CPC Classifications: G02B,G02F

Claim:
1. A backlight unit, comprising: a light source providing a blue light; a light guide plate of glass at a side of the light source; an optical sheet on the light guide plate; a reflective sheet under the light guide plate; an optic change part including a yellow fluorescent material and disposed on a lower surface of the light guide plate; a bottom frame providing a space for the light source, the light guide plate, the optical sheet and the reflective sheet; a housing inside the bottom frame, the housing comprising an inner side surface supporting the light source and a horizontal bottom portion under the reflective sheet; and a supporting part between the bottom frame and the reflective sheet, the supporting part supporting the light guide plate and the reflective sheet to maintain a gap between the reflective sheet and the bottom frame, wherein the supporting part is not in contact with the housing, wherein the blue light is changed into a white light by the optic change part, and wherein the supporting part and the light guide plate overlap each other in a plane view.