Patent ID: 9024333
Filing Date: 2015-05-05
Classification: H01L

Abstract:
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; and a second conductive semiconductor layer disposed on the active layer, wherein the first conductive semiconductor layer comprises a first layer provided at an upper surface thereof with a notch, a second layer disposed on the first layer and a third layer disposed on the second layer, wherein the first conductive semiconductor layer further comprises a blocking layer between the first layer and the second layer and the blocking layer is disposed along the notch, wherein a center of the notch overlaps at least a portion of a flat top surface of the third layer, wherein a first electrode is disposed on the first layer and the first electrode electrically connected to the first layer, and wherein an opening of the notch is disposed above a contact surface of the first electrode and the first layer, and wherein the second layer of the first conductive semiconductor layer has a flat upper surface and a bottom surface that has a prescribed shape to correspond to the notch on the upper surface of the first layer.