| 摘要 |
A backlight unit according to the embodiment of the present invention includes: a light emitting device package; a substrate which includes a pattern layer which is electrically connected to the light emitting device package and a base layer which is arranged under the pattern layer and includes a substrate coupling unit which includes a plurality of patterns which are engraved or embossed; and a frame which includes a plurality of frame coupling units corresponding to the substrate coupling unit and is coupled to the substrate. The patterns of the substrate coupling unit have at least two types. |
