Semiconductor device

• US 8,232,880 B2
• Filed: 03/09/2007
• Issued: 07/31/2012
• Est. Priority Date: 03/10/2006
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Koyama, Jun, Ishii, Masato, Atsumi, Tomoaki, Osada, Takeshi, Ikeda, Takayuki, Kurokawa, Yoshiyuki, Shionoiri, Yutaka
• Primary Examiner(s): BLOUNT, ERIC
• Application Number:
  US11/716,018
• Publication Number:
  US 20070229279A1
• Time in Patent Office: 1,971 Days
• Field of Search: 3405721-5728, 340/10.1
• US Class Current: 340/572.7
• CPC Class Codes: G06K 19/0701 at least one of the integrated circuit chips comprising an arrangement for power management
• CPC Class Codes: G06K 19/0702 the arrangement including a battery
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/07767 the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal

Abstract

The present invention provides a battery as a power supply for supplying power in the RFID, and another antenna for charging the battery, in addition to an antenna which transmits and receives individual information to and from outside as a means for supplying power to the battery.

Claims

1. A semiconductor device comprising:

a booster antenna;

a signal processing circuit on a first surface of an insulating film;

a battery on a second surface of the insulating film opposite to the first surface of the insulating film;

a first antenna circuit configured to receive a first signal through the booster antenna and transmit a second signal for transmitting data stored in the signal processing circuit through the booster antenna; and

a second antenna circuit configured to receive a third signal for charging the battery.

3. A semiconductor device according to claim 1,

wherein the second antenna circuit is configured to receive the third signal for charging the battery from a charger comprising an antenna circuit through the booster antenna.

4. A semiconductor device according to claim 1,

wherein the first antenna circuit is configured to receive the first signal and transmit the second signal for transmitting the data stored in the signal processing circuit between a reader/writer and the first antenna circuit through the booster antenna.

7. The semiconductor device according to any one of claims 1 to 6,

wherein the signal processing circuit comprises a power supply circuit, and

wherein the battery is configured to supply power to the power supply circuit.

8. The semiconductor device according to any one of claims 1 to 6, wherein each of the first antenna circuit and the second antenna circuit is configured to transmit and receive a radio signal by an electromagnetic induction method.

11. The semiconductor device according to any one of claims 1-6, 9 and 10, wherein the battery comprises one selected from a lithium cell, a nickel metal hydride cell, a nickel cadmium cell, and a capacitor.

13. A semiconductor device according to claim 1,

wherein the battery is electrically connected to the signal processing circuit through an opening formed in the insulating film.

2. A semiconductor device comprising:

a booster antenna;

a signal processing circuit on a first surface of an insulating film;

a battery on a second surface of the insulating film opposite to the first surface of the insulating film;

a first antenna circuit configured to receive a first signal and transmit a second signal for transmitting data stored in the signal processing circuit; and

a second antenna circuit configured to receive a third signal for charging the battery through the booster antenna.

5. A semiconductor device according to claim 2,

wherein the first antenna circuit is configured to receive the first signal and transmit the second signal for transmitting the data stored in the signal processing circuit between a reader/writer and the first antenna circuit, and

wherein the second antenna circuit is configured to receive the third signal for charging the battery from a charger comprising an antenna circuit through the booster antenna.

6. A semiconductor device according to claim 2,

wherein the first antenna circuit is configured to receive the first signal and transmit the second signal for transmitting the data stored in the signal processing circuit between a reader/writer and the first antenna circuit through the booster antenna, and

wherein the second antenna circuit is configured to receive the third signal for charging the battery from a charger including comprising an antenna circuit through the booster antenna.

14. A semiconductor device according to claim 2,

wherein the battery is electrically connected to the signal processing circuit through an opening formed in the insulating film.

9. A semiconductor device comprising:

a first antenna circuit;

a second antenna circuit;

a signal processing circuit;

a battery; and

a booster antenna,

wherein the booster antenna and at least one of the first antenna circuit and the second antenna circuit are formed on a first surface of an insulating film,

wherein the battery is formed on a second surface of the insulating film,

wherein the first antenna circuit is configured to receive a first signal and transmit a second signal for transmitting data stored in the signal processing circuit; and

wherein the second antenna circuit is configured to receive a third signal for charging the battery.

10. A semiconductor device according to claim 9,

wherein the first antenna circuit is configured to receive the first signal and transmit the second signal for transmitting the data stored in the signal processing circuit between a reader/writer and the first antenna circuit, and

wherein the second antenna circuit is configured to receive the third signal for charging the battery from a charger comprising an antenna circuit.

15. A semiconductor device according to claim 9,

wherein the battery is electrically connected to the signal processing circuit through an opening formed in the insulating film.

12. A semiconductor device comprising:

a booster antenna;

a signal processing circuit;

a battery;

a first antenna circuit to receive a first signal through the booster antenna and transmit a second signal for transmitting data stored in the signal processing circuit through the booster antenna; and

a second antenna circuit to receive a third signal for charging the battery,

wherein the second antenna circuit is operationally connected to the battery through the signal processing circuit, further comprising;

a first substrate;

a second substrate opposed to the first substrate;

the first and second antenna circuits and the signal processing circuit comprising first and second signal processing circuits over the first substrate;

the booster antenna under the second substrate;

wherein a portion of the battery is located between the booster antenna and one of the first and second antenna circuits.