Patent ID: 8288781

Claim:
A light emitting device, comprising: a substrate; a plurality of light emitting cells disposed on the substrate, each light emitting cell comprising a first upper semiconductor layer, an active layer, and a second lower semiconductor layer; a first connection metal disposed between the substrate and the light emitting cells, the first connection metal being insulated from the active layers and the first upper semiconductor layers, the first connection metal electrically connecting the second lower semiconductor layers; reflective metal layers interposed between the second lower semiconductor layers and the first connection metal to electrically connect the second lower semiconductor layers; a first electrode pad spaced apart from light emission surfaces of the light emitting cells, wherein the first electrode pad is electrically connected to the upper semiconductor layers; a second electrode pad spaced apart from light emission surfaces of the light emitting cells, wherein the second electrode pad is electrically connected to the first connection metal; and a first separated layer and a second separated layer comprising a first semiconductor, the first separated layer and the second separated layer disposed on the substrate and spaced apart from the light emitting cells, wherein the first electrode pad is disposed on the first separated layer and the second electrode pad is disposed on the second separated layer, wherein each of the first upper semiconductor layers comprises an extension extending from a region of the light emitting cell.