Patent ID: 8664682

Claim:
A semiconductor light emitting device comprising: a light emitting structure comprising a first conductive type semiconductor layer, a second conductive type semiconductor layer and an active layer between the first conductive type semiconductor layer and the second conductive type semiconductor layer; a reflective electrode layer under the light emitting structure; an outer protection layer disposed on an outer of the reflective electrode layer; a conductive support substrate under the reflective electrode layer; and a first electrode on the first conductive type semiconductor layer, wherein the light emitting structure includes an outer groove formed at an outer area of the light emitting structure, wherein a thickness of an outmost area of the light emitting structure is smaller than a thickness of a center area of the light emitting structure, wherein the first conductive type semiconductor layer includes an AlGaN layer and the second conductive type semiconductor layer includes an AlGaN layer, and wherein the outer protection layer is insulated from the conductive support substrate or the reflective electrode layer.