Patent ID: 8624270

Claim:
A light emitting device comprising: a first chip structure including a first reflective layer and a first light emitting structure having a plurality of compound semiconductor layers on a top surface of the first reflective layer; a second chip structure disposed on a top surface of the first chip structure and including a second reflective layer and a second light emitting structure having a plurality of compound semiconductor layers on a top surface of the second reflective layer; an electrode on a top surface of the second light emitting structure of the second chip structure; a first adhesive layer between the second reflective layer and the first light emitting structure; and a second adhesive layer between the first adhesive layer and the second reflective layer, wherein the first and second adhesive layers are formed of a conductive material, wherein the first adhesive layer is electrically connected to the second adhesive layer, wherein the first light emitting structure includes a first conductive semiconductor layer, a first active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the first active layer, wherein the second light emitting structure includes a third conductive semiconductor layer, a second active layer under the third conductive semiconductor layer, and a fourth conductive semiconductor layer under the second active layer, wherein the first reflective layer is electrically connected to the second conductive semiconductor layer, and wherein the second reflective layer is electrically connected to the fourth conductive semiconductor layer.