Patent ID: 8921881

Claim:
A microelectronic device emitting light radiation comprising: a first doped semiconducting zone and a second doped semiconducting zone located on said first doped semiconducting zone and forming a junction with said first doped semiconducting zone, said junction being supported on a first face of a conducting substrate, at least one first region of a second face, opposite to the first surface, of the substrate being covered and in contact with a first conducting zone forming an electrical contact, at least one second region of the second face of the substrate being covered with a second conducting zone disjoined from said first conducting zone, said second conducting zone being a heat dissipation zone, said second region of the second face being covered with an electrical insulation zone intermediate between said second face of the substrate and said second conducting zone such that said second conducting zone does not contact any portion of the substrate, said second conducting zone occupying an area larger than the area occupied by said first conducting zone on the substrate, wherein the first conducting zone directly contacts the first region of the second face of the substrate without electrical insulation disposed between the first conducting zone and the first region of the second face of the substrate.