Patent ID: 8643807
Filing Date: 2014-02-04
Classification: G02B,G02F

Abstract:
1. A backlight unit comprising: a light source configured to generate light; a light guiding plate including i) an incoming surface configured to receive the light from the light source, ii) an upper surface substantially perpendicularly extended with respect to the incoming surface, and iii) a bottom surface arranged so as to face the upper surface; and an optical sheet formed on the light guiding plate, wherein the upper surface of the light guiding plate includes a guiding surface, an inclined surface, and an emission surface sequentially arranged close to the incoming surface of the light guiding plate, wherein the optical sheet covers at least the inclined surface and the guiding surface, wherein the light source comprises a plurality of sub-light sources, and wherein the optical sheet includes a cut-out portion formed between the sub-light sources.