Patent ID: 8345430

Claim:
An IC card, comprising: a frame of a rectangular border-shape composed of synthetic resin; a printed circuit board that is disposed on an interior portion of the frame and equips an electronic component; and one pair of shells that constitutes an outer shell, the shells being composed of a metal plate, and covers an area surrounded by the frame, wherein: the one pair of shells comprises a first shell and a second shell, the first shell which is formed by insert molding with the frame, the second shell is processed separately from the frame without insert molding with the frame and has a plurality of bent pieces, which are intermittent, facing an edge portion of the frame of the first shell on a periphery thereof, one of the bent pieces establishes a stopper that protrudes from a plate thickness surface thereof on a front end portion, and the plurality of bent pieces are joined to the frame of the first shell by solidification of the synthetic resin of the edge portion of the frame, partially fluidized by application of pressure and ultrasonic vibration to the front end portion of the edge portion of the frame, after the bent pieces including the stopper are partially inserted into the frame fluidized resin.