Siemens Aktiengesellschaft

Alfred Groeber

Hans Hadersbeck

Ernst Andrascek

Fritz Mueller

Hans J Hacke

Hubert Zukier

A method for the manufacture of fine structures for semiconductors were in a photographic structuring is carried out on both sides of a smooth, non-stressed metal tape. The tape is etched from both sides. A single sided metal deposition than takes place by means of a float type electroplating. Stabilization of the fine structure is achieved by depositing a lacquer or resin by an electrophoretic deposition or by electro-immersion lacquering. The insulator carrier is applied as one of the final steps of the process.

Manufacture of fine structures for semiconductor contacting

A flexible printed circuit board has conductors on opposite sides thereof which are through-contacted by die-punching the board to form an angularly-displaced tongue portion about which solder is flowed to contact both conductors. A terminal pin is optionally inserted through the board to connect a component, the pin being engaged by the angularly-displaced tongue to ensure reliable mechanical and electrical contact in the soldered joint. The through-contact is formed with a bevel-faced die in conjunction with a cutting plate.

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Stockdorf, Germany

Alfred Groeber