Patent ID: 9356007
Filing Date: 2016-05-31
CPC Classification: F21K,F21V,F21Y,H01L

Claim Text:
1. A light emitting device comprising: a light emitting structure comprising a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer; a second electrode layer disposed beneath the light emitting structure and electrically connected to the second-conductivity-type semiconductor layer; a first electrode layer comprising a main electrode disposed beneath the second electrode layer, and at least one contact electrode branching from the main electrode and extending through the second electrode layer, the second-conductivity-type semiconductor layer and the active layer, to contact the first-conductivity-type semiconductor layer; and an insulating layer interposed between the first electrode layer and the second electrode layer and between the first electrode layer and the light emitting structure, wherein the first-conductivity-type semiconductor layer comprises a first region and a second region, the first region directly contacts the contact electrode, and a width of the first region is greater than a width of the contact electrode, and wherein a thickness of the first region in a vertical direction is greater than a thickness of the second region in a vertical direction.