Patent ID: 8636401
Filing Date: 2014-01-28
Classification: G02B,G02F

Abstract:
1. A backlight unit comprising: a light-guide plate which guides incident light and has diffusion patterns for emitting light upward, the diffusion patterns being formed on at least one of upper and lower surfaces of the light-guide plate; and a point light source assembly disposed on at least one side surface of the light-guide plate, the point light source assembly comprising a plurality of point-light-source elements and a support substrate, in which the point-light-source elements are disposed on the support substrate and supply the light to the light-guide plate, wherein at least one edge portion of one surface of the light-guide plate, which is adjacent to the point light source assembly, comprises a first region corresponding to the point-light-source elements and a second region corresponding to a position between the point-light-source elements, wherein the at least one side surface of the light-guide plate is substantially flat, and wherein the diffusion patterns are formed on the second region and not formed on the first region.