Integrated circuit card comprising an interface terminal strip and method for making same

• US 6,548,888 B1
• Filed: 11/14/2000
• Issued: 04/15/2003
• Est. Priority Date: 05/15/1998
• Status: Expired due to Fees

• Current Assignee: Gemplus (Thales SA)
• Original Assignee: Gemplus (Thales SA)
• Inventors: Fidalgo, JeanChristophe, Dossetto, Lucile
• Primary Examiner(s): Clark; Sheila V.
• Application Number:
  US09/700,392
• Time in Patent Office: 882 Days
• Field of Search: 257/679,698,787 438/126,127,125
• US Class Current: 257/679
• CPC Class Codes: G06K 19/07743 External electrical contacts
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/48465 the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
• CPC Class Codes: H01L 2224/49171 Fan-out arrangements
• 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 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01057 Lanthanum [La]
• CPC Class Codes: H01L 2924/01079 Gold [Au]
• CPC Class Codes: H01L 2924/181 Encapsulation

Abstract

An integrated circuit card includes a card body having an integrated circuit electrically connected to contact pads formed by electrically conductive ink. An interface terminal strip provided with a series of terminals is electrically connected to the integrated circuit contacts. The contact pads are formed on the card body upper surface such that each pad comprises a portion which covers, at least partially, a terminal of the interface terminal strip.

Claims

1. An integrated circuit card, comprising:

a card body having a cavity;

a set of contacts on a surface of said card body that conform in size to an established standard; and

a module disposed in said cavity at said surface and having a size smaller than said standardized size, said module including an integrated circuit and a connector interface of metallic sheet material having a plurality of terminals that are electrically connected to pads on said integrated circuit;

wherein said contacts are formed by a conductive ink and cover at least a portion of said terminals and a portion of said surface of said card body.

2. The integrated circuit of claim 1, wherein said connector interface of said module is flush with said surface.

3. The integrated circuit of claim 1, wherein said module is disposed in said cavity so that said connector interface is situated below said surface to form a recess, and further including an encapulation resin in said recess.

4. The integrated circuit of claim 1, wherein the size of said module is no larger than one-half of said standardized size.

5. The integrated circuit card of claim 1 wherein said conductive ink comprises a flexible material that is capable of absorbing deformations without breakage.

6. A method for manufacturing an integrated circuit card, comprising the following steps:

providing a card body having a cavity therein;

forming a module comprising an integrated circuit and a connector interface made of metallic sheet material having a plurality of terminals that are electrically connected to pads on said integrated circuit, said module having a size which is smaller than an established standard size for contacts on an integrated circuit card;

inserting said module in said cavity so that said connector interface is disposed at a surface of said card body; and

depositing a conductive ink to form contacts that conform in size to said standard and cover at least a portion of said terminals and a portion of said surface of said card body.

7. The method of claim 6 wherein the step of forming the module includes providing slits in a metallic sheet material to define said terminals.

8. The method of claim 6 wherein said conductive ink is deposited by means of inkjet printing.

9. The method of claim 6 wherein said conductive ink is deposited by means of an inking pad with vertical or rotary movement.

10. The method of claim 6 wherein said conductive ink is deposited by means of an offset technique using a roller for transferring ink onto said surface and said terminals.

11. The method of claim 6 wherein said depositing step includes printing tracks of conductive ink that extend at least partly along the sides of the cavity, and said inserting step includes inserting the module in the cavity so that each terminal penetrates the ink in said tracks to provide electrical contact, and further including the step of hardening the ink after said inserting step.