Smart cards with metal layer(s) and methods of manufacture
First Claim
1. A method of manufacturing a smartcard having a card body, comprising:
- providing a portion of the card body as a subassembly having two metal layers and a dielectric layer disposed between and joined by laminating to the two metal layers;
wherein;
at least one of the two metal layers is a coupling frame having a slit (S) or non-conductive stripe (NCS) extending from an outer edge of the metal layer to an inner position thereof, and the slit (S) is disposed to overlap at least a portion of a module antenna (MA) of a transponder chip module (TCM) disposed in the smartcard.
2 Assignments
0 Petitions
Accused Products
Abstract
Smartcards with metal layers manufactured according to various techniques disclosed herein. One or more metal layers of a smartcard stackup may be provided with slits overlapping at least a portion of a module antenna in an associated transponder chip module disposed in the smartcard so that the metal layer functions as a coupling frame. One or more metal layers may be pre-laminated with plastic layers to form a metal core or clad subassembly for a smartcard, and outer printed and/or overlay plastic layers may be laminated to the front and/or back of the metal core. Front and back overlays may be provided. Various constructions of and manufacturing techniques (including temperature, time, and pressure regimes for laminating) for smartcards are disclosed herein.
118 Citations
15 Claims
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1. A method of manufacturing a smartcard having a card body, comprising:
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providing a portion of the card body as a subassembly having two metal layers and a dielectric layer disposed between and joined by laminating to the two metal layers; wherein; at least one of the two metal layers is a coupling frame having a slit (S) or non-conductive stripe (NCS) extending from an outer edge of the metal layer to an inner position thereof, and the slit (S) is disposed to overlap at least a portion of a module antenna (MA) of a transponder chip module (TCM) disposed in the smartcard. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Smartcard having at least contactless capability comprising:
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a transponder chip module having an RFID chip and a module antenna connected to the RFID chip; a coupling frame comprising a first metal layer having a slit or non-conductive stripe extending from an outer edge of the metal layer to an inner position thereof, wherein the slit or non-conductive stripe is disposed to overlap at least a portion of the module antenna; and at least one plastic layer including an adhesive layer laminated to at least one side of the metal layer. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. Smartcard comprising:
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a transponder chip module having an RFID chip and a module antenna (MA) connected to the RFID chip; and a metal layer formed as a single turn continuous closed circuit loop antenna having an edge feature such that the module antenna of the transponder chip module disposed in the smartcard overlaps one or more inner or outer edge positions on the continuous closed circuit loop antenna.
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Specification