Patent ID: 6897494

Claim:
A GaN based Light Emitting Diode (LED) comprising: a substrate; a light emitting structure formed on said substrate including an active region; a multi-layer window structure formed of a first layer and a second layer of Mg doped GaN, said window structure being disposed on the light emitting structure; a transparent conductive outer layer formed on the window structure, the conductive outer layer having an exposed surface and at least one opening formed therein; a first opening in said transparent conductive outer layer, exposing an upper surface of a portion of the Mg doped GaN multi-layer window structure; a second opening formed through to the N cladding layer of the light emitting structure at one side of said light emitting structure; and a complementary pair of electrodes defined by: (a) an N electrode formed at said second opening at said one side of said light emitting structure, in ohmic contact with the light emitting structure, and (b) a P electrode formed at said first opening, in a shape of a bar, with one side of said bar having a semi-circular protrusion, the P electrode including a bond pad adhesion layer with a bond pad layer deposited thereon, wherein only the semi-circular protusion of the P electrode extends through said first opening to contact the upper surface of the multi-layer window structure, while the bar is disposed on top of the transparent conductive outer layer.