NON-CONTACT TYPE IC CARD

• US 20090242645A1
• Filed: 02/19/2007
• Published: 10/01/2009
• Est. Priority Date: 03/31/2006
• Status: Abandoned Application

• Current Assignee: Kyodo Printing Company Limited
• Original Assignee: Kyodo Printing Company Limited
• Inventors: Komatsu, Akihiko, Kawaguchi, Keisuke, Tsushio, Hajime, Nagumo, Akiko
• Application Number:
  US12/293,459
• Publication Number:
  US 20090242645A1
• Time in Patent Office: Days
• US Class Current: 235/488
• CPC Class Codes: G06K 19/07735 the record carrier comprising means for protecting against electrostatic discharge
• 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

Abstract

This invention provides a non-contact type IC card that can prevent electrostatic discharge failure of an IC chip caused by static electricity generated in a metal reflective layer. In a non-contact type IC card, an inlet sheet on which an antenna and an IC chip connected to the antenna are mounted is embedded in a card base member and a metal reflective layer (which corresponds to a hologram-magnetic recording layer) is laminated on the surface of the card base member. The non-contact type IC card includes conductive members that are embedded in the card base member. The conductive members attract static electricity generated in the metal reflective layer, and discharge the static electricity from a second surface of the card base member (the surface of the card) opposite to a first surface of the card base member (the back surface of the card) on which the metal reflective layer is laminated.

Claims

1. A non-contact type IC card where an inlet sheet on which an antenna and an IC chip connected to the antenna are mounted is embedded in a card base member and a metal reflective layer is laminated on the surface of the card base member, the non contact type IC card comprising:

conductive members that are embedded in the card base member, and attract static electricity generated in the metal reflective layer and discharge the static electricity from a second surface of the card base member opposite to a first surface of the card base member on which the metal reflective layer is laminated.

2. The non-contact type IC card according to claim 1,

wherein the conductive members are embedded in the card base member so as to be positioned close to the second surface of the card base member rather than the first surface of the card base member.

3. The non-contact type IC card according to claim 1,

wherein the conductive members are embedded in the card base member so that at least a part of the conductive members overlap the metal reflective layer in a laminating direction of the non-contact type IC card.

4. The non-contact type IC card according to claim 1,

wherein the conductive members are embedded in the card base member so as to be positioned in the vicinity of the metal reflective layer without overlapping the metal reflective layer in a laminating direction of the non-contact type IC card.

5. The non-contact type IC card according to claim 1,

wherein the conductive members are mounted on the same surface of the inlet sheet as an IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

6. The non-contact type IC card according to claim 4, further comprising:

a conductive wire that is embedded in the card base member, and attracts static electricity generated in the metal reflective layer to the conductive members.

7. The non-contact type IC card according to claim 6,

wherein the conductive wire is mounted on the surface of the inlet sheet opposite to the IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

8. The non-contact type IC card according to claim 6,

wherein the conductive wire is mounted on the same surface of the inlet sheet as the IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

9. The non-contact type IC card according to claim 5,

wherein the conductive member has a thickness corresponding to a distance between a mounting position on the surface of the inlet sheet and the second surface of the card base member.

10. The non-contact type IC card according to claim 1,

wherein the conductive members are embedded in the card base member so as to be positioned on upper and lower surfaces of the IC chip through the inlet sheet.

11. The non-contact type IC card according to claim 10,

wherein the conductive members are reinforcing members for reinforcing the IC chip.

12. The non-contact type IC card according to claim 1,

wherein a magnetic recording layer, the metal reflective layer, and a hologram layer are sequentially laminated on the surface of the card base member.

13. The non-contact type IC card according to claim 2,

wherein the conductive members are embedded in the card base member so that at least a part of the conductive members overlap the metal reflective layer in a laminating direction of the non-contact type IC card.

14. The non-contact type IC card according to claim 2,

wherein the conductive members are embedded in the card base member so as to be positioned in the vicinity of the metal reflective layer without overlapping the metal reflective layer in a laminating direction of the non-contact type IC card.

15. The non-contact type IC card according to claim 2,

wherein the conductive members are mounted on the same surface of the inlet sheet as an IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

16. The non-contact type IC card according to claim 3,

wherein the conductive members are mounted on the same surface of the inlet sheet as an IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

17. The non-contact type IC card according to claim 4,

wherein the conductive members are mounted on the same surface of the inlet sheet as an IC chip-mounting surface of the inlet sheet on which the IC chip is mounted.

18. The non-contact type IC card according to claim 2,

wherein the conductive members are embedded in the card base member so as to be positioned on upper and lower surfaces of the IC chip through the inlet sheet.

19. The non-contact type IC card according to claim 3,

wherein the conductive members are embedded in the card base member so as to be positioned on upper and lower surfaces of the IC chip through the inlet sheet.

20. The non-contact type IC card according to claim 4,

wherein the conductive members are embedded in the card base member so as to be positioned on upper and lower surfaces of the IC chip through the inlet sheet.