Patent ID: 8405068

Claim:
A reflecting light emitting structure comprising: a substrate having a first face and a second face, wherein the first face is in a first crystallographic plane; a plurality of grooves formed in the first face of the substrate, wherein each of the plurality of grooves includes a first sidewall that is coplanar with a second crystallographic plane and a second sidewall that is coplanar with a third crystallographic plane; a buffer layer provided on the substrate, wherein the buffer layer is made of Al x Ga 1-x N (0<x≦1); and a light emitting diode (LED) fabricated on the buffer layer, the LED comprising: a first doped layer fabricated directly onto the buffer layer; a multiple quantum well (MQW) structure layer fabricated directly onto the first doped layer; and a second doped layer fabricated directly onto the MQW structure layer, and wherein the buffer layer comprises a first sub-layer of aluminum nitride (AlN) and a second sub-layer of aluminum gallium nitride (Al x Ga 1-x N) (0<x≦1).