Patent ID: 8558258
Filing Date: 2013-10-15
Classification: H01L

Abstract:
1. A light emitting device comprising: a substrate having a plurality of patterns; a first conductive semiconductor layer on a buffer layer, wherein the first conductive semiconductor layer includes first to third GaN-based layers, wherein the first GaN-based layer includes Si dopant, the second Ga-based layer includes a dopant having a lower concentration of Si than the first GaN-based layer, and the third GaN-based layer includes In material, wherein the first conductive semiconductor layer further comprises a fourth GaN-based layer including Al material, and wherein the fourth GaN-based layer has a planar surface; an active layer on the third GaN-based layer of the first conductive semiconductor layer, wherein the active layer comprises a single quantum well layer or a multi quantum well layer of In a second conductive semiconductor layer on the active layer.