Patent ID: 8309979

Claim:
A light emitting device comprising the following layers: a first semiconductor layer with doping of the first type; a second semiconductor layer with doping of the second type; a light emitting region interdisposed between first and second semiconductor layer, wherein light generated in the light emitting region is extracted from a surface of the second semiconductor layer; an electrical conducting mirror layer disposed proximal to the first semiconductor layer and distal to the second semiconductor layer and at least partially extending across a surface of the first semiconductor layer, wherein at least 60% of light generated in the light emitting region and incident on the electrical conducting mirror layer is reflected; an isolation layer disposed proximal to the electrical conducting mirror layer and distal to the first semiconductor layer, wherein the isolation layer is a deposited layer conformal with the electrical conducting mirror layer and comprises an electrically insulating material with a thermal conductivity greater than 130 W/(m·K); a first electrode disposed on the electrical conducting mirror, wherein the first electrode is not in contact with the first or the second semiconductor layer; and a second electrode disposed on the second semiconductor layer.