Patent ID: 7781897

Claim:
A semiconductor device, comprising: a circuit carrier with a number of internal contact areas, which comprise a first material with a first electrochemical potential; a semiconductor chip with an active surface and a back side, the active surface having a number of chip contact areas, which comprise a second material with a second electrochemical potential; and bonding wire connections between the chip contact areas and the internal contact areas of the circuit carrier, the bonding wires comprising a third material with a third electrochemical potential; connecting points between the chip contact areas and the bonding wires and connecting points between the internal contact areas and the bonding wires being coated with an anticorrosive layer; and wherein the surfaces of the semiconductor chip other than those immediately adjacent the connecting points between the bonding wires and the chip contact areas and the surfaces of the circuit carrier other than those immediately adjacent the connecting points between the bonding wires and the internal contact areas remain free from, the anticorrosive layer; and wherein the anticorrosive layer includes a first polymer layer directed towards the connecting points between the bonding wires and the chip contact areas and the surfaces of the circuit carrier with end groups which have a particular affinity with material of the connecting point, and a second polymer layer directed towards a plastic compound encapsulating the bonding wires with end groups which have a particular affinity with the plastic compound.