Packing material, tag, certificate, paper money, and securities

• US 7,893,837 B2
• Filed: 03/23/2009
• Issued: 02/22/2011
• Est. Priority Date: 12/26/2003
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Akiba, Mai, Yamazaki, Shunpei
• Primary Examiner(s): Trieu; Van T.
• Application Number:
  US12/409,032
• Publication Number:
  US 20090224922A1
• Time in Patent Office: 701 Days
• Field of Search: 340/572.1, 340/572.4, 340/572.7, 340/572.8, 340/573.1, 340/10.1, 340/10.3, 340/10.4, 340/10.5, 340/10.51, 235/492, 235/451, 434/700.MS, 434/702
• US Class Current: 340/572.1
• CPC Class Codes: G06K 19/025 the material being flexible or adapted for folding, e.g. paper or paper-like materials used in luggage labels, identification tags, forms or identification documents carrying RFIDs methods for testing the genuineness of valuable papers, e.g. banknotes or passports G07D7/00; constructional features of booklets and the like B42D
• CPC Class Codes: G06K 19/072 the record carrier comprising a plurality of integrated circuit chips
• 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 19/14 the marking being sensed by radiation
• CPC Class Codes: G07D 7/01 Testing electronic circuits therein

Abstract

A packing material, a tag, a certificate, paper money, and securities, each of which can be surely prevented from counterfeit or deception, are disclosed. According to the present invention, a plurality of wireless tags is used for an object such as a packing material, a tag, a certificate, paper money, or securities. The location of the plurality of wireless tags attached to each of the object is varied on the object basis such that the object can be identified. Then, the object using the wireless tag is identified by detecting the location of the plurality of wireless tags attached to each of the object. The more random the locations of the wireless tags, the more certain it becomes to identify the object and to prevent or detect the counterfeit and the deception of the object.

Claims

1. A packing material comprising:

at least two wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna,

wherein information of location of the at least two wireless chips in the packing material includes information for identifying the packing material.

2. A packing material according to claim 1, wherein the integrated circuit is formed by a thin film transistor.

3. A packing material according to claim 1, wherein the at least two wireless chips are dispersed over a surface of a base material or embedded dispersedly in the base material, and the base material has flexibility.

4. A packing material according to claim 3, wherein the base material has paper or plastic.

5. A packing material according to claim 1, wherein the integrated circuit comprises:

a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna;

a demodulation circuit for forming a first signal by demodulating the alternating signal;

a microprocessor for producing a second signal by arithmetic processing according to the first signal;

a modulation circuit for modulating the second signal; and

a switch for modulating a load on the antenna according to the second signal that is modulated.

6. A packing material according to claim 1, wherein at least one of the at least two wireless chips has a memory.

7. A packing material according to claim 6, the memory has a region for storing a password for restricting reading.

8. A tag comprising:

at least two wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna,

wherein information of location of the at least two wireless chips in the tag includes information for identifying the tag.

9. A tag according to claim 8, wherein the integrated circuit is formed by a thin film transistor.

10. A tag according to claim 8, wherein the at least two wireless chips are dispersed over a surface of a base material or embedded dispersedly in the base material, and the base material has flexibility.

11. A tag according to claim 10, wherein the base material has paper or plastic.

12. A tag according to claim 8, wherein the integrated circuit comprises:

a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna;

a demodulation circuit for forming a first signal by demodulating the alternating signal;

a microprocessor for producing a second signal by arithmetic processing according to the first signal;

a modulation circuit for modulating the second signal; and

a switch for modulating a load on the antenna according to the second signal that is modulated.

13. A tag according to claim 8, wherein at least one of the at least two wireless chips has a memory.

14. A tag according to claim 13, the memory has a region for storing a password for restricting reading.

15. A certificate comprising:

at least two wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna,

wherein information of location of the at least two wireless chips in the certificate includes information for identifying the certificate.

16. A certificate according to claim 15, wherein the integrated circuit is formed by a thin film transistor.

17. A certificate according to claim 15, wherein the at least two wireless chips are dispersed over a surface of a base material or embedded dispersedly in the base material, and the base material has flexibility.

18. A certificate according to claim 17, wherein the base material has paper or plastic.

19. A certificate according to claim 15, wherein the integrated circuit comprises:

a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna;

a demodulation circuit for forming a first signal by demodulating the alternating signal;

a microprocessor for producing a second signal by arithmetic processing according to the first signal;

a modulation circuit for modulating the second signal; and

a switch for modulating a load on the antenna according to the second signal that is modulated.

20. A certificate according to claim 15, wherein at least one of the at least two wireless chips has a memory.

21. A certificate according to claim 20, the memory has a region for storing a password for restricting reading.

22. An object comprising:

a base material; and

at least two wireless chips supported by the base material, each of the at least two wireless chips having an antenna and an integrated circuit electrically connected to the antenna,

wherein information of location of the at least two wireless chips in the object includes information for identifying the object.

23. An object according to claim 22, wherein the integrated circuit is formed by a thin film transistor.

24. An object according to claim 22, wherein the base material has flexibility.

25. An object according to claim 22, wherein the base material has paper or plastic.

26. A method for identifying an object which comprises at least two wireless chips, the method comprising the steps of:

detecting information of location of the at least two wireless chips; and

identifying the object by using at least the information of location.