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Contactless IC card

  • US 5,999,409 A
  • Filed: 01/21/1998
  • Issued: 12/07/1999
  • Est. Priority Date: 01/28/1997
  • Status: Expired due to Fees
First Claim
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1. A contactless IC card comprising:

  • an insulating film; and

    coupling areas located in central portions on front surface and a rear surface of coil forming areas in a predetermined dimension on the insulating film,wherein antenna coils are formed and are constructed by a pair of coils on the front surface and the rear surface which have turns in the same direction when seen from the outside, are shifted by a half pitch between a coil on the front surface and a coil on the rear surface, and are connected via a through hole in an end part of the coupling areas.

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