| 摘要 |
PURPOSE:To enable to semultanenously insulation-isolate the fellow leads as well by a method wherein plural lead pieces are continuously formed without being insulation-isolated electrically and apertures, in which the lead pieces are made to electrically isolation-insulate, are provided. CONSTITUTION:A metal foil is adhered on an insulating film 1. Common conductors 7, 8, which are prolonged along at least one side part of the side parts of the metal foil or both side parts thereof, are formed on the one part or both side parts thereof, and each lead piece 3 is concentratively connected to the common conductors 7, 8 through its own connecting wire of connecting wires 9, 10. Concentration parts are provided on each of the common conductors 7, 8 in between holes for each pellet 2 and each lead piece 3 is connected to the concentration part 11 or 12 close to the lead piece by its own connecting wire 9 or 10. The lead pieces 3, the common conductor 7, 8, the connecting wires 9, 10 and the concentration parts are formed as one pattern. After a bonding is performed, isolation holes 14, 15 are respectively punched out in the insulating film 1 including one of the concentration parts. Each lead piece 3 is separated from other lead pieces in this punched-out part and is brought into an electrically insulated state. |
