Identification card

• US 20030038174A1
• Filed: 12/22/2000
• Published: 02/27/2003
• Est. Priority Date: 12/22/2000
• Status: Active Grant

• Current Assignee: L-1 Secure Credentialing, LLC (Advent International Corporation)
• Original Assignee: Digimarc Corporation
• Inventors: Jones, Robert L.
• Granted Patent: US 6,923,378 B2
• Time in Patent Office: Days
• US Class Current: 235/380
• CPC Class Codes: G06K 19/02 characterised by the selection of materials, e.g. to avoid wear during transport through the machine
• CPC Class Codes: G06K 19/07728 the record carrier comprising means for protection against impact or bending, e.g. protective shells or stress-absorbing layers around the integrated circuit
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

An identification card is prepared by attaching an antenna and integrated circuit chip onto a core layer of polyolefin, attaching a bottom sheet to the core layer thus encasing the antenna and integrated circuit chip, providing an image-receiving layer on one or both outer surfaces of the resulting sandwich, and laminating a protective layer or layers over the image-receiving layer(s). The identification document displays improved durability, ease of manufacture and protection of the electronic components.

Claims

1. An improved identification card comprising:

a core layer comprising a silica-filled polyolefin, said core layer having a first side and a second side,

at least one antenna affixed to said first side of said core layer,

at least one integrated circuit chip electrically connected to said antenna,

a bottom sheet comprising a silica-filled polyolefin attached to said first side of said core by a first adhesive layer such that said antenna and said chip are encased between said core layer and said bottom sheet.

2. An improved identification card according to claim 1 further comprising

an akyld resin spid containing an anti-binding agent printed on said first side of said core layer and positioned between said antenna and said first side of said core layer.

3. An improved identification card according to claim 1 further comprising a first polymer layer attached to said second side of said core layer by a second adhesive layer.

4. An improved identification card according to claim 3 further comprising a second polymer layer attached to a first side of said bottom sheet by a third adhesive layer such that said core layer and said bottom sheet are enveloped between said first polymer layer and said second polymer layer.

5. An improved identification card according to claim 1 further comprising an image-receiving layer affixed to said second side of said core layer.

6. An improved identification card according to claim 1 further comprising a second image-receiving layer affixed to said first side of said bottom sheet.

7. An improved identification card according to claim 5 having at least one indicium printed by dye diffusion thermal transfer on the image-receiving layer, the identification card further comprising a protective layer fixed to the image receiving layer and attached over said indicium.

8. An improved identification card according to claim 5 having at least one indicium printed by ink jet printing on the image-receiving layer.

9. An improved identification card according to claim 2 wherein said alkyd resin spid is a polyester epoxy material containing a release agent.

10. An improved identification card according to claim 2 wherein said alkyd resin spid is an acrylate epoxy material containing a release agent.

11. An improved identification card according to claim 2 wherein said alkyd resin spid is a vinyl acetate epoxy material containing a release agent.

12. An improved identification card according to claim 3 wherein said first polymer layer is a polyester or a polycarbonate.

13. An improved identification card according to claim 4 wherein said second polymer layer is a polyester or a polycarbonate.