Non-contact information communication apparatus

• US 6,727,862 B2
• Filed: 07/22/2002
• Issued: 04/27/2004
• Est. Priority Date: 04/01/2002
• Status: Active Grant

• Current Assignee: Japan Information System Company Limited
• Original Assignee: Japan Information System Company Limited
• Inventors: Tomon, Isao
• Primary Examiner(s): Clinger, James
• Application Number:
  US10/199,111
• Publication Number:
  US 20030184495A1
• Time in Patent Office: 645 Days
• Field of Search: 343/895, 343/700.MS, 343/702, 343/841, 463/43, 463/44, 463/40, 463/41, 463/42, 340/572.5, 340/825.54, 235/380, 235/381
• US Class Current: 343/895
• 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: 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
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

A non-contact information communication apparatus according to the present invention has a bare IC and a sheet capacitor 3 implemented on substrate 1, and an antenna coil of vortical circle shape formed on the substrate 1 so as to enclose at least portion of the bare IC and the sheet capacitor 3. Because the number of turns of the antenna coil 4 is set to 7-10, the outer size of the antenna coil can be set to be equal to or smaller than one yen size. Each of the substrate 1, the antenna coil 4, the bare IC and the sheet capacitor 3 is thinned, and the thickness of the entire apparatus is set to be equal to or thinner than 100 μm. Because of this, the apparatus can be much thinner than the conventional apparatus, thereby using it in various field.

Claims

1. A non-contact information communication apparatus, comprising:

a resonance circuit which has an antenna coil and a capacitor connected between both ends of the antenna coil; and

an IC which embeds a rectification circuit configured to rectify a resonance output of said rectification circuit, a communication circuit configured to perform demodulation processing of the received radio signal and modulation processing of a transmission signal, and a storing part configured to store data included in the radio signal,

wherein said resonance circuit and said IC are formed or implemented on a substrate;

said IC operates by using a voltage rectified by said rectification circuit as a driving power supply; and

said antenna coil is formed of a pattern enclosing at least a portion of said capacitor and said IC on the substrate.

2. The non-contact information communication apparatus according to claim 1, wherein said antenna coil has a shape of a circle or a rectangle.

3. The non-contact information communication apparatus according to claim 1, wherein a thickness of said antenna coil is within 10-35 μ

m, and said antenna coil is formed of material including copper.

4. The non-contact information communication apparatus according to claim 1, wherein said antenna coil is formed of a vertical pattern with a number of turns n, where n is an integer greater than or equal to 2.

5. The non-contact information communication apparatus according to claim 1, wherein a line length of said antenna coil is within 360 mm.

6. The non-contact information communication apparatus according to claim 1, wherein a maximum outer size of said antenna coil is equal to or smaller than 18 mm.

7. The non-contact information communication apparatus according to claim 1, wherein the radio signal has a frequency signal of 13.56 MHz.

8. The non-contact information communication apparatus according to claim 1, wherein said capacitor is formed of at least one of polyimide, polyethylene terephthalate, PEN and liquid crystal polymer.

9. A non-contact information communication apparatus according to claim 1, comprising:

a resonance circuit which has an antenna coil and a capacitor connected between both ends of the antenna coil; and

an IC which embeds a rectification circuit configured to rectify a resonance output of said rectification circuit, a communication circuit configured to perform demodulation processing of the received radio signal and modulation processing of a transmission signal, and a storing part configured to store data included in the radio signal,

wherein said resonance circuit and said IC are formed or implemented on a substrate;

said IC operates by using a voltage rectified by said rectification circuit as a driving power supply;

said antenna coil is formed of a pattern enclosing at least a portion of said capacitor and said IC on the substrate; and

said capacitor has three terminals which are arranged on substantially one line with one or more terminals of said IC.

12. The non-contact information communication apparatus according to claim 1, wherein a minimum distance between the terminal of said IC and the terminal of said capacitor is set to be within 15 mm.

13. The non-contact information communication apparatus according to claim 1, wherein said capacitor and said IC have substantially the same shape and the same size.

14. The non-contact information communication apparatus according to claim 1, wherein an adhesive is coated with faces opposite to faces contacted on the substrate of said capacitor and said IC.

10. A non-contact information communication apparatus comprising:

a resonance circuit which has an antenna coil and a capacitor connected between both ends of the antenna coil; and

an IC which embeds a rectification circuit configured to rectify a resonance output of said rectification circuit, a communication circuit configured to perform demodulation processing of the received radio signal and modulation processing of a transmission signal, and a storing part configured to store data included in the radio signal,

wherein said resonance circuit and said IC are formed or implemented on a substrate;

said IC operates by using a voltage rectified by said rectification circuit as a driving power supply;

said antenna coil is formed of a pattern enclosing at least a portion of said capacitor and said IC on the substrate;

a first terminal of said antenna coil and a first terminal of said capacitor are electrically conducted to each other by a jumper cable;

the first terminal of said capacitor and the first terminal of said IC are conducted to each other by a pattern on the substrate; and

a second terminal of said IC and said antenna coil are conducted to each other by a pattern on the substrate.

11. The non-contact information communication apparatus according to claim 10, wherein said jumper cable is formed by using a portion of the electrode of said capacitor.