Patent ID: 7495263
Filing Date: 2009-02-24
Classification: H01L

Abstract:
1. A semiconductor light-emitting device comprising: a DBR (Distributed Bragg Reflector) and a light-emitting layer supported by at least a substrate comprising GaAs, the DBR being located between the substrate comprising GaAs and the light-emitting layer, wherein light directed from the light-emitting layer toward a top surface of the light-emitting device has a radiation angle dependence; a semiconductor layer formed over at least the light-emitting layer, a top surface of the semiconductor layer comprising a roughened surface which is not at least partially covered by the other semiconductor layers in order to cause light output from the light-emitting device to be scattered upon leaving the top surface of the device; wherein no DBR is provided between the light-emitting layer and the semiconductor layer having the top surface that is roughened; and wherein a top electrode of the device includes a plurality of separate apertures defined therein so as to expose different parts of the roughened surface of the semiconductor layer.