Patent ID: 8928017
Filing Date: 2015-01-06
Classification: H01L

Abstract:
1. A light-emitting device (LED) comprising: a first semiconductor layer of a first impurity type; a second semiconductor layer of a second impurity type; an active layer between the first and second semiconductor layers; an emission pattern layer on the first semiconductor layer, the emission pattern layer including a plurality of layers and having an emission pattern that externally emits light generated from the active layer; a metal layer under the second semiconductor layer; an insulating layer between the metal layer and the second semiconductor layer; a first contact layer that penetrates the insulating layer, the second semiconductor layer, and the active layer, and contacts the first semiconductor layer and the metal layer; a second contact layer contacting the second semiconductor layer; and an electrode unit contacting the second contact layer, the electrode unit penetrating the second semiconductor layer, the active layer, and the first semiconductor layer to be exposed to the outside of the LED.