Patent ID: RE42636

Claim:
A light emitting diode comprising: a substrate; a light emitting region; a window structure ; and first and second electrodes; wherein said window structure comprises comprising: an Mg+ doped window layer; a semi-transparent metal NiO x /Au contact layer , disposed on said Mg+ doped window layer; and a semi-transparent, conductive amorphous current spreading layer formed directly on an exposed face of said contact layer; and wherein an opening is formed through said contact layer and said current spreading layer and said first electrode comprises a layer of titanium formed on said current spreading layer and through said opening to contact an upper surface of said Mg+ doped window layer. a first electrode having a layer of titanium and formed on said current spreading layer and forming an ohmic connection with said current-spreading layer; a second electrode; and an opening formed through said contact layer and said current spreading layer, such that said layer of titanium of said first electrode contacts an upper surface of said Mg+ doped window layer.