Patent ID: 7176060

Claim:
A method of manufacturing an IC card, comprising the steps of: (a) providing a tape substrate, the tape substrate having a plurality of chip mounting areas over one side thereof and external terminal patterns formed on opposite sides respectively of the plural chip mounting areas; (b) mounting semiconductor chips respectively over the plural chip mounting areas of the tape substrate; (c) connecting back surfaces of the external terminal patterns exposed into a plurality of bonding holes formed in the tape substrate and the semiconductor chips electrically with each other through wires; (d) loading the tape substrate into a molding die and sealing each of the plural semiconductor chips mounted over the one side of the tape substrate with a molding resin wherein said molding die sets outer peripheries for the molding resin around each of the semiconductor chips; and (e) cutting the tape substrate along the outer peripheries of the molding resin, set by the molding die, by means of a press to divide the molding resin into individual pieces such that the planar dimensions of the IC cards are set in accordance with the outer peripheries of the molding resin set by the molding die, wherein power supply lines for electrolytically plating surfaces of the external terminal patterns are formed over the opposite side of the tape substrate, a portion of the power supply lines being formed in an area where the power supply lines overlap with air vents of the molding die when the tape substrate is loaded into the molding die.