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Antenna sheet, transponder, and booklet

  • US 8,519,905 B2
  • Filed: 09/12/2008
  • Issued: 08/27/2013
  • Est. Priority Date: 09/14/2007
  • Status: Active Grant
First Claim
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1. An antenna sheet comprising:

  • a flexible substrate;

    an antenna coil that is connected to a terminal section of an external IC module including an IC chip, said antenna coil being arranged on said substrate;

    a storing section that stores at least a part of said IC module being formed on said substrate; and

    a cover layer that covers said antenna coil,said cover layer comprisingan EMAA (ethylene methyl acrylic acid copolymer)-based thermoplastic adhesive whose thickness is greater than or equal to 12 μ

    m,an EMAA based thermoplastic adhesive to which an epoxy-based cross-linking agent is added, a mixture ratio of the epoxy-based cross-linking agent being greater than or equal to 1%, oran acrylic-based thermoplastic adhesive whose thickness is greater than or equal to 4 μ

    m.

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