Patent ID: 9121988
Filing Date: 2015-09-01
Classification: F21S,F21V,G02B,G02F,Y10T

Abstract:
1. A back light unit comprising: a bottom case; a light guide plate having an upper surface, a lower surface, and edge surfaces; a first light source unit comprising first light sources and a first board, wherein the first light sources are disposed above the first board and adjacent to a first edge surface of the light guide plate; a second light source unit comprising second light sources and a second board, wherein the second light sources are disposed below the second board and adjacent to a second edge surface of the light guide plate opposite the first edge so that the light guide plate is disposed between the first and second light sources; a support main disposed above the light guide plate, wherein the first board is disposed on the lower surface of the light guide plate and the second board is disposed on the upper surface of the light guide plate; wherein the support main comprises first and second stepped guide portions formed at a lower inside thereof to seat the second light source unit and the bottom case, respectively; wherein the bottom case further comprises a shielding blade configured to cover an upper surface of the first light source unit; wherein the second light source unit further comprises a reflective material disposed on a surface of the second board and is configured to cover at least a portion of a lower surface of the support main facing the light guide plate; and a reflective member disposed on a lower surface of the shielding blade and configured to cover the first light source unit.