Patent ID: 8497578

Claim:
A contact structure for a semiconductor substrate, in particular for a terminal face of a semiconductor substrate, said contact structure comprising; a base contact part arranged on a terminal face of the semiconductor substrate, said base contact part being formed from a base contact material applied to the terminal face in an electroless deposition process; and at least one connecting contact part arranged on the base contact part, said connecting contact part being formed from a connecting contact material applied to the base contact part by one of a sputtering process and a vapor-phase deposition process, and the base contact part has a layer structure featuring two built-up layers, said layer structure including a base layer and at least one built-up layer in a transition zone towards the connecting contact part, wherein the base contact part has an exposed upper surface contacting the connecting contact part, the connecting contact part partially covering the exposed upper surface of the base contact part due to a coating shadow, and the connecting contact part being formed from a connecting contact material which has a lower melting point than a base contact material of the base contact part.