Patent ID: 8809893

Claim:
A semiconductor light emitting device, comprising: a conductive substrate; a light emitting structure including a first-conductivity type semiconductor layer, an active layer, and a second-conductivity type semiconductor layer which are sequentially disposed on the conductive substrate; a first contact layer electrically connected to the first-conductivity type semiconductor layer between the conductive substrate and the first-conductivity type semiconductor layer and exposed to the outside of the light emitting device; a conductive via extending from the conductive substrate, passing through the first contact layer, the first-conductivity type semiconductor layer, and the active layer, and electrically connected to the inside of the second-conductivity type semiconductor layer; an insulator electrically separating the conductive substrate from the first contact layer, the first-conductivity type semiconductor layer, and the active layer; a passivation layer disposed to cover at least a side surface of the active layer in the light emitting structure; and an uneven structure disposed on a path of light emitted from the active layer, wherein the light emitting structure is disposed only on a portion of a top surface of the conductive substrate, and wherein an etch stop layer composed of a material different from a material of the first contact layer is disposed on at least a region in which the light emitting structure is not disposed over the top surface of the first contact layer, the etch stop layer having an etching characteristic different from a semiconductor material constituting the light emitting structure, and wherein a side surface of the etch stop layer, a side surface of the first contact layer and a side surface of the insulator are substantially coplanar in a thickness direction of the light emitting device.