HERSTELLUNG EINER MEHRSCHICHTIGEN LEISTUNGSHALBLEITERSCHALTUNG MIT MEHRFACHEN PARALLELEN KONTAKTFINGERN.

摘要

A large area solid state multi-layer semiconductive switching device having multiple parallel contacts (12) accommodates large magnitudes of currents and provides a uniform and a relatively low voltage drop for each of its multiple parallel contacts (12). A cathode pole piece (21) if formed substantially of a semiconductive material such as silicon (22) which matches the thermal expansion characteristics of the active part of the semiconductive device. In addition, a permanent bond is provided between the cathod pole piece (21) and the multiple contacts (12) by providing the cathode pole piece (21) with suitable metallic contact layers (23,26,25) and then by the application of heat and pressure to bond the outermost of these contacts layers (23) to the parallel contacts (12).