Patent ID: 8450760

Claim:
A device comprising plural vertically stacked stacks, the device comprising: a first stack including a semiconductor structure comprising a light emitting region, an n-type region, and a p-type region, the light emitting region disposed between the n-type region and the p-type region, the semiconductor structure including a p-n junction, the light emitting region, the n-type region, and the p-type region structured as a flip chip having a first side including the light emitting region and the p-type and n-type regions, the first side defining a bottom side of the semiconductor structure; a second stack including a circuit element comprising a diode comprising a p-type silicon layer and an n-type silicon layer, the diode having a junction substantially parallel to the p-n junction, the second stack including the circuit element stacked on the bottom side of the semiconductor structure; a first reflective and opaque metal contact layer in direct contact with the n-type region and a second reflective metal contact layer in direct contact with the p-type region, wherein the first reflective metal contact layer and the second reflective metal contact layer are both stacked on the bottom side of the semiconductor structure, the first and second reflective metal contact layers together cover the bottom side of the semiconductor structure, and the first reflective metal contact layer and the second reflective metal contact layer are stacked between, and separate the circuit element from the semiconductor structure, the first and second reflective metal contacts directing light out a side of the semiconductor structure different from the first side; a first metal connection layer stacked on the bottom side of the first stack and directly contacting the first reflective metal contact layer; and a second metal connection layer stacked on the bottom side of the first stack and directly contacting the second reflective metal contact layer, and wherein the second stack is stacked between the second metal connection layer and the first reflective metal contact layer.