Patent ID: 7335519
Filing Date: 2008-02-26
Classification: B82Y,H01L

Abstract:
1. A method for manufacturing a light-emitting diode (LED), comprising: providing a substrate, wherein the substrate includes a first conductivity type cladding layer, an active layer, a second conductivity type cladding layer, a superlattice contact layer and a transparent conductive oxide layer stacked thereon in sequence; forming an etching mask layer on a portion of the transparent conductive oxide layer, wherein the etching mask layer is an insulator; performing a first etching step to remove the exposed portion of the transparent conductive oxide layer until the superlattice contact layer is exposed; performing a second etching step to remove the exposed portion of the superlattice contact layer as well as the second conductivity type cladding layer and the active layer underlying the exposed portion of the superlattice contact layer until the first conductivity type cladding layer is exposed; removing the etching mask layer; and forming a first conductivity type electrode and a second conductivity type electrode respectively on the exposed portion of the first conductivity type cladding layer and the transparent conductive oxide layer.