Patent ID: 9740047
Date: 2017-08-22
CPC Classifications: F21V,G02F

Claim:
1. A backlight unit comprising: a frame including a bottom and a sidewall extending from the bottom; at least one substrate located on the frame, and a plurality of light sources mounted on the at least one substrate; and a reflecting sheet located on the at least one substrate, wherein the reflecting sheet comprises: a first sheet part located on the bottom, the first sheet part including an outer area having a plurality of outermost holes and an inner area having a plurality of inner holes corresponding to the plurality of the light sources; a second sheet part extended from the first sheet part; a plurality of first dot areas on the first sheet part, and respectively having a ring-shaped dot area being adjacent to and aligned with at least one of the outermost holes; and a plurality of second dot areas on the second sheet part, wherein the respective ring-shaped dot areas are only arranged on some of the outermost holes.