Patent ID: 9343629
Filing Date: 2016-05-17
CPC Classification: H01L

Claim Text:
1. A light emitting device comprising: a light emitting structure comprising a first semiconductor layer, a second semiconductor layer, and an active layer between the first and second semiconductor layers; a first electrode electrically connected to the first semiconductor layer; and a second electrode disposed on the second semiconductor layer, wherein the second electrode comprises: a reflective layer disposed on the second semiconductor layer; a metal layer disposed on a side surface of the reflective layer and on a top surface of reflective layer, wherein the metal layer has a first layer, and a second layer on the first layer, wherein the first layer is contacted with an upper surface of the second semiconductor layer, wherein the first layer contains chromium (Cr), and the second layer contains aluminum (Al); a first anti-oxidation layer formed only on an upper surface of the metal layer; and a second anti-oxidation layer formed only on an upper surface of the first anti-oxidation layer, wherein the second anti-oxidation layer is more than 10 times thicker than the first anti-oxidation layer.