Patent ID: 6972437

Claim:
An AlGaInN light emitting diode comprising: a substrate having a surface, a first n-AlGaInN layer grown on the surface of the substrate, a second n-AlGaInN layer grown on the first n-AlGaInN layer, an active layer grown on the second n-AlGaInN layer, a first p-AlGaInN layer grown on the active layer, a second p-AlGaInN layer grown on the first p-AlGaInN layer, an electrode contacted with the second p-AlGaInN layer, a p-metal electrode formed on the electrode and serving as a bonding pad, and an ohmic metal contacted with the first n-AlGaInN layer, wherein the surface of the substrate has a lozenge shape and each of the first n-AlGaInN layer, the second n-AlGaInN layer, the active layer, the first p-AlGaInN layer and the second p-AlGaInN layer has a lozenge shape when viewed from the direction perpendicular to the surface of the substrate.