Patent ID: 8686450
Filing Date: 2014-04-01
Classification: H01L

Abstract:
1. A vertically-structured GaN-based light emitting diode, comprising: a structure supporting layer: a p-type electrode disposed on an upper or lower surface of the structure supporting layer; a p-type GaN layer disposed on the structure supporting layer on which the p-type electrode is disposed; an active layer disposed on the p-type GaN layer; an n-type GaN layer disposed on the active layer and is doped with n-type impurities; an undoped GaN layer disposed on the n-type GaN layer to cover an entire upper surface of the n-type GaN layer, and on which a plurality of concave patterns are periodically defined; and an n-type electrode disposed on the undoped GaN layer, wherein a doping concentration of the n-type GaN layer gradually increases from a portion thereof where the n-type GaN layer is in contact with the undoped GaN layer.