RFID tag
AssigneeHitachi, Ltd.
InventorsNaoya Kanda, Noriyuki Oroku
Life of this patent
Estimating the term…
Abstract
For protecting information stored in an RFID chip and ensuring its authenticity, radio communication between the RFID chip and an external terminal is positively interrupted when a seal type RFID tag including the RFID chip is peeled from an adherend, while ensuring solidity integrity when the RFID tag is put on the adherend. In the seal type RFID tag which includes the RFID chip fixed on a mounting surface of a base member having an adhesive layer applied thereto and which is put on the adherend by using the adhesive layer, an antenna formed on a main surface of the RFID chip is embedded in adhesive layers together with the RFID chip and an adhesive bonding strength between the antenna and the adhesive layer is made greater than a joining strength between the antenna and the RFID chip.
Claims6
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.
Dependencies are inferred from the claim text.