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US 2006/0220871 A1Published application
RFID tag
AssigneeFujitsu Limited
InventorsShunji Baba, Toru Maniwa, Takashi Yamagajo, Manabu Kai
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Abstract
The present invention relates to an RFID tag and is provided with a function of detecting peeling while maintaining a good antenna characteristic. A first conductive pattern includes two extending sections extending from an IC chip, each end of which is connected to the IC chip, and a correction pattern for antenna characteristic correction which bypasses the IC chip and connects the two extending sections, and a peeling detection pattern is formed in an area enclosed by the two extending sections and the correction pattern.
Claims5
An RFID tag comprising:
- a base;
- a first conductive pattern provided on the base, which operates as a communication antenna;
- a second conductive pattern for peeling detection provided on the base, which is destroyed when peeled off the base;
- a circuit chip electrically connected to both the first conductive pattern and the second conductive pattern, which carries out a radio communication using the first conductive pattern as an antenna and detects the destruction of the second conductive pattern;
- and
- a cover covering the first conductive pattern, the second conductive pattern and the circuit chip, which is bonded to the base in a detachable manner and peeled off the base with the whole or part of the second conductive pattern remaining bonded,
- wherein the first conductive pattern includes two extending sections extending from the circuit chip, each end of which is connected to the circuit chip and a correction pattern for antenna characteristic correction which bypasses the circuit chip and connects the two extending sections, and
- the second conductive pattern is formed within an area enclosed by the two extending sections and the correction pattern.
5 more elements
Dependencies are inferred from the claim text.