Patent ID: 7776654

Claim:
A production method for an electronic device providing IC chips each having an external electrode formed respectively on each of the surfaces of an opposing pair, a transmission and reception antenna having a slit formed therein and a bridging plate that electrically connects the IC chips and the antenna, comprising the steps of: forming a plurality of antenna circuits using a first metallic foil and forming an antenna substrate by disposing the antenna circuits on a base substrate, or forming an antenna substrate by providing a plurality of antenna circuits from the first metallic foil disposed on a base substrate; arranging the IC chips; holding the IC chips thus arranged one by one in each of a plurality of hands that are arranged around the outer periphery of a disc-like conveyor and are each capable of holding a single IC chip, and conveying those IC chips by rotating the disc-like conveyor; arranging each of the IC chips thus conveyed via a first anisotropic conductive adhesive layer on a bridging plate forming a second metallic layer such that the IC chips are electrically connected, producing a bridging plate with IC chips attached; positionally aligning the bridging plate with IC chips attached in the required position on the antenna circuits such that the IC chips are electrically connected; and thermal compression binding the bridging plate with IC chips attached at once in the determined position over the antenna substrate via a second anisotropic conductive adhesive layer.