Patent ID: 8009047

Claim:
An RFID tag comprising: a chip having an antenna disposed on a side of a first main surface of the chip and a circuit electrically connected to the antenna; and a base member having a mounting surface to which an adhesive layer is applied, the chip being fixed by the adhesive layer with a second main surface of the chip being directed toward the mounting surface, wherein the antenna has a first part electrically connected to the circuit and a second part kept apart from the first main surface of the chip, the chip is embedded in the adhesive layer so as to cause the antenna extending on and over the first main surface to be covered by the adhesive layer, an insulation film having an opening for connecting the circuit to the first part of the antenna is formed on the first main surface of the chip, the second part of the antenna is formed so as to extend from the opening onto the insulation film, and a conductor film which forms the antenna exhibits a stronger bonding force to the adhesive layer than to the insulation film.