Patent ID: 8920014
Filing Date: 2014-12-30
Classification: F21V,G02B,Y10T

Abstract:
1. A backlight unit comprising: a light guide plate including an exit surface which has a polygonal shape, a lower surface which faces the exit surface, and side surfaces which connect the exit surface and the lower surface, wherein the light guide plate guides a light such that the light exits from the exit surface; and a light source unit including a plurality of light sources which provide the light to the light guide plate, wherein the light guide plate further includes a protrusion which protrudes from an end of the lower surface in a direction opposite to the exit surface, and the protrusion comprises a first inclination surface which extends directly from a side surface of the light guide plate nearest the light source unit, and a second inclination surface which connects the first inclination surface and the lower surface to each other.