Card mounted with circuit chip and circuit chip module

• US 6,181,001 B1
• Filed: 06/24/1999
• Issued: 01/30/2001
• Est. Priority Date: 12/27/1996
• Status: Expired due to Term

• Current Assignee: ROHM Co., Ltd.
• Original Assignee: ROHM Co., Ltd.
• Inventors: Ikefuji, Yoshihiro, Okada, Hiroharu, Chimura, Shigemi
• Primary Examiner(s): Clark, Sheila V.
• Application Number:
  US09/331,191
• Time in Patent Office: 586 Days
• Field of Search: 257/679, 257/678, 257/687, 257/723, 257/724
• US Class Current: 257/679
• 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: G06K 19/0775 arrangements for connecting the integrated circuit to the antenna
• CPC Class Codes: G06K 19/07775 the antenna being on-chip
• CPC Class Codes: G06K 19/07779 the inductive antenna being a coil
• CPC Class Codes: G06K 19/07781 the coil being fabricated in a winding process
• CPC Class Codes: G06K 19/07783 the coil being planar
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48227 connecting the wire to a bond pad of the item
• 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 2924/01004 Beryllium [Be]
• CPC Class Codes: H01L 2924/01039 Yttrium [Y]
• CPC Class Codes: H01L 2924/01079 Gold [Au]
• CPC Class Codes: H01L 2924/01322 Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
• CPC Class Codes: H01L 2924/19041 being a capacitor
• CPC Class Codes: H01L 2924/30107 Inductance
• CPC Class Codes: H01L 2924/3011 Impedance

Abstract

A circuit chip mounted card has a processing-circuit layer 106 in which is constructed a processing unit including a non-volatile memory, a modulation/demodulation circuit and a capacitor for providing a process associated with communication. In the processing-circuit layer is also constructed a coil 44 of a looped metal wire.

Communicating function is completely provided only by a single IC chip 104 with the function of the processing unit and that of an antenna integrated therewith. Thus IC chip 104 does not require external wiring and will thus not suffer from an accidentally cut-off wire or the like. It is also dispensed with an operation to connect wires so that the card can extremely readily be fabricated. Thus a circuit chip mounted card can be obtained which is highly reliable and reduces the cost for manufacturing the same.

Claims

1. A circuit chip mounted card mounting thereto an antenna using an electromagnetic wave to provide communication and a processing unit providing a process associated with the communication, characterized in that:

inside or outside said circuit chip including said processing unit, a terminal of said antenna is connected directly to a terminal of said circuit chip;

said circuit chip has a surface provided with a terminal electrically connected to said processing unit incorporated in said circuit chip;

said antenna is a metal wire fixed on a film; and

said antenna is arranged in contact with a surface of said circuit chip and is also electrically connected to said terminal at said surface of said circuit chip.

11. The circuit chip mounted card of claim 1, wherein a reinforced body including a frame is arranged to surround said circuit chip.

16. The circuit chip mounted card of claim 1, characterized in that at least one capacitor of circuit elements configuring said circuit chip is constructed of ferroelectronics.

21. The circuit chip mounted card of claim 1, characterized in that said processing unit of said circuit chip includes a non-volatile memory and a modulation/demodulation circuit.

2. A circuit chip mounted card mounting thereto an antenna using an electromagnetic wave to provide communication and a processing unit providing a process associated with the communication, characterized in that:

inside or outside said circuit chip including said processing unit, a terminal of said antenna is connected directly to a terminal of said circuit chip;

said circuit chip has a surface provided with a terminal electrically connected to said processing unit incorporated in said circuit chip; and

said antenna is a metal wire wounded around said circuit chip and electrically connected to said terminal at said surface of said circuit chip.

12. The circuit chip mounted card of claim 2, wherein a reinforced body including a frame is arranged to surround said circuit chip.

17. The circuit chip mounted card of claim 2, characterized in that at least one capacitor of circuit elements configuring said circuit chip is constructed of ferroelectronics.

22. The circuit chip mounted card of claim 2, characterized in that said processing unit of said circuit chip includes a non-volatile memory and a modulation/demodulation circuit.

3. A circuit chip mounted card mounting thereto an antenna using an electromagnetic wave to provide communication and a processing unit providing a process associated with the communication, characterized in that:

Inside or outside said circuit chip including said processing unit, a terminal of said antenna is connected directly to a terminal of said circuit chip;

said circuit chip has a surface provided with a terminal electrically connected to said processing unit incorporated in said circuit chip; and

said antenna is a metal wire fixed on a surface of said circuit chip and electrically connected to said terminal at said surface of said circuit chip.

13. The circuit chip mounted card of claim 3, wherein a reinforced body including a frame is arranged to surround said circuit chip.

18. The circuit chip mounted card of claim 3, characterized in that at least one capacitor of circuit elements configuring said circuit chip is constructed of ferroelectronics.

23. The circuit chip mounted card of claim 3, characterized in that said processing unit of said circuit chip includes a non-volatile memory and a modulation/demodulation circuit.

4. A circuit chip mounted card mounting thereto an antenna using an electromagnetic wave to provide communication and a processing unit providing a process associated with communication, characterized in that:

inside or outside such circuit chip including said processing unit, a terminal of said antenna is connected directly to a terminal of said circuit chip; and

said antenna is constructed of a wiring layer provided in said circuit chip and is also electrically connected to said processing unit within said circuit chip.

5. The circuit chip mounted card of claim 4, characterized in that a resonance circuit comprised of a capacitor provided internal to said circuit chip and a coil serving as said antenna has an adjustable resonance frequency.

6. The circuit chip mounted card of claim 5, characterized in that said circuit chip has a plurality of capacitors previously constructed therein and having an interconnect selectively cut off to obtain a desired resonance frequency.

7. The circuit chip mounted card of claim 5, characterized in that said circuit chip has a plurality of coils previously constructed therein and having an interconnect selectively cut off to obtain a desired resonance frequency.

14. The circuit chip mounted card of claim 4, wherein a reinforced body including a frame is arranged to surround said circuit chip.

19. The circuit chip mounted card of claim 4, characterized in that at least one capacitor of circuit elements configuring said circuit chip is constructed of ferroelectronics.

24. The circuit chip mounted card of claim 4, characterized in that said processing unit of said circuit chip includes a non-volatile memory and a modulation/demodulation circuit.

8. A circuit chip mounted card mounting thereto an antenna using an electromagnetic wave to provide communication and a processing unit providing a process associated with the communication, comprising

a first base member;

a second base member spaced apart from said first base member by a predetermined distance in a direction of a thickness of said card,

a core member layer arranged between said first base member and said second base member;

a circuit chip internally provided with said processing unit and also provided at a surface thereof with a terminal electrically connected to said processing unit, and

an antenna formed by fixing a metal wire on a film, said antenna being arranged on a surface of said circuit chip and electrically connected to said terminal at said surface of said circuit chip, said circuit chip mounted card characterized in that

said circuit chip and said antenna are arranged at said core member layer.

15. The circuit chip mounted card of claim 8, wherein a reinforced body including a frame is arranged to surround said circuit chip.

20. The circuit chip mounted card of claim 8, characterized in that at least one capacitor of circuit elements configuring said circuit chip is constructed of ferroelectronics.

9. A circuit chip module used for a card with a circuit chip mounted, comprising

a circuit chip including a processing unit for providing a process associated with communication, and

an antenna electrically connected to said processing unit and having a terminal directly connected to a terminal of said circuit chip inside or outside said circuit chip, using an electromagnetic wave to provide the communication, said circuit chip module characterized in that

said antenna is a metal wire fixed on a film arranged in contact with a surface of said circuit chip.

10. A circuit chip module used for a card with a circuit chip mounted thereto, comprising

a circuit chip including a processing unit for providing a process associated with communication, and

an antenna electrically connected to said processing unit and having a terminal directly connected to a terminal of said circuit chip inside or outside said circuit chip, using an electromagnetic wave to provide the communication, the module characterized in that

said circuit chip includes a capacitor and said antenna is constructed of a coil, said capacitor and said coil being used to construct a resonance circuit, said resonance circuit having an adjustable resonance frequency.