Patent ID: 8901597

Claim:
A semiconductor light emitting device comprising: a light emitting structure including: a first conductive semiconductor layer; a second conductive semiconductor layer under the first conductive semiconductor layer; and an active layer between the first and second conductive semiconductor layers; an electrode disposed on the first conductive semiconductor layer; an electrode layer including at least one of an ohmic layer or a reflective layer contacting a lower surface of the second conductive semiconductor layer; a conductive support member under the electrode layer; an adhesion layer disposed between the electrode layer and the conductive support member; a protective layer disposed on an outer portion of the lower surface of the second conductive semiconductor layer; and a buffer layer disposed on a lower surface of the protective layer, wherein the conductive support member includes a top surface having a horizontal width wider than a horizontal width of the lower surface of the second conductive semiconductor layer, wherein the protective layer includes a first portion between the second conductive semiconductor layer and adhesion layer and a second portion extended outwardly beyond the lower surface of the second conductive semiconductor layer, wherein the buffer layer includes a different material from the protective layer, wherein the second portion of the protective layer outwardly extends in a horizontal direction from the first portion and is disposed outwardly of an outer sidewall of the second conductive semiconductor layer, wherein the buffer layer is disposed outwardly of the outer sidewall of the second conductive semiconductor layer, wherein the buffer layer is vertically overlapped with the conductive support member and the adhesion layer, wherein the buffer layer is formed of a conductive material, wherein the buffer layer is disposed between the protective layer and the adhesion layer, wherein the buffer layer physically contacts the electrode layer and the protective layer, wherein the buffer layer has a horizontal width smaller than a horizontal width of the protective layer, wherein the buffer layer includes a first hole therein, wherein the protective layer includes a second hole overlapped with the first hole in a vertical direction, and wherein the first hole has a horizontal width wider than a horizontal width of the second hole.