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Laminate RFID label and method of manufacture

  • US 6,262,692 B1
  • Filed: 01/13/1999
  • Issued: 07/17/2001
  • Est. Priority Date: 01/13/1999
  • Status: Expired due to Fees
First Claim
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1. A laminated article for use as an RFID label, said article comprising:

  • a first conductive material shaped to define two electrical attachment pads;

    a dielectric material which forms a second layer that surrounds said attachment pads and extends outward therefrom to form a label boundary;

    a second conductive material deposited on said dielectric material and shaped to form an antenna having two portions which electrically connect to the respective attachment pads;

    an expandable material disposed over the antenna and extending inward from the label boundary to define a protective cavity surrounding said attachment pads, wherein said expandable material is selected from a group consisting of a thermally expandable ink and a binder including an expandable additive, and expanding the expandable material increases the height of the protective cavity.

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