Patent ID: 9660160
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: a substrate; a first conductive semiconductor layer disposed on the substrate; an active layer disposed on the first conductive semiconductor layer; a second conductive semiconductor layer disposed on the active layer; a first via electrode contacting the first conductive semiconductor layer through a via hole penetrating the substrate; a second via electrode contacting the second conductive semiconductor layer through a second via hole penetrating the substrate, the first conductive semiconductor layer, and the active layer; a first extending electrode extending from the first via electrode while contacting a top surface of the first via electrode; a second extending electrode extending from the second via electrode while contacting a top surface of the second via electrode; a first electrode under a bottom portion of the first via electrode; and a second electrode under a bottom portion of the second via electrode, wherein the first extending electrode includes a metal material, and wherein a lateral width of the first extending electrode is greater than a lateral width of the first electrode, wherein the first extending electrode is disposed in the first conductive semiconductor layer, wherein a top surface of the first extending electrode is not exposed, wherein a lateral width of the second extending electrode is greater than a lateral width of the second electrode, wherein the second extending electrode is disposed in the second conductive semiconductor layer, wherein a top surface of the second extending electrode is not exposed through an upper surface of the second conductive semiconductor layer, wherein the second extending electrode is vertically overlapped with the first extending electrode, wherein the top surface of the second extending electrode is lower than the upper surface of the second conductive semiconductor layer, and wherein the second extending electrode is not in contact with the upper surface of the second conductive semiconductor layer, and the second extending electrode is not in contact with a lower surface of the second conductive semiconductor layer.