JP4509687B2 - Information carrier - Google Patents

Description

  The present invention relates to an information carrier provided with a semiconductor device having an RFID function.

  In recent years, with the progress of the information society, a large amount of information is recorded on an information recording medium such as an IC card, and information management and settlement are performed using this IC card.

  An IC card used for such information management and payment has a built-in IC chip, and a large amount of information can be written to and read from the IC chip. Such an IC card includes a contact IC card that writes and reads information by bringing it into contact with a dedicated device, and a non-contact IC that can write and read information only by being brought close to the dedicated device. Broadly divided into cards.

  Conventionally, as a non-contact type IC card among IC cards, for example, an IC card in which an IC module is mounted on a card base, a communication antenna coil is built in, and an insertion portion for inserting an IC card is provided. What is comprised from the antenna coil case formed is mentioned. The IC card is provided with a connection terminal A connected to the IC module, and a connection terminal B connected to the communication antenna coil is provided on the inner surface of the insertion portion of the antenna coil case. By inserting the IC card into the insertion portion of the antenna coil case, the connection terminal A and the connection terminal B are electrically connected to form a non-contact type IC card (see, for example, Patent Document 1). When this non-contact type IC card is used, the IC card is inserted into the insertion portion of the antenna coil case to integrate them. When not in use, the IC card and the antenna coil case are separated from each other, so that the IC module Can be prevented (information communication in the IC module can be made impossible).

However, conventionally, a plurality of antenna coils having different communication distances and resonance frequencies and one IC chip are provided, and if necessary, by selectively connecting one of the plurality of antenna coils and the IC chip. A non-contact type IC card with variable communication distance and communication frequency has not been devised.
Japanese Patent Laid-Open No. 11-219418

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an information carrier including a semiconductor device having an RFID function that selectively enables reading and rewriting of information.

  In order to solve the above-described problems, the present invention is an information carrier including a rotating disk and a member that supports the rotating disk, and contacts α (n) at intervals along the outer periphery of the rotating disk. ) [N is a natural number equal to or greater than 1], antennas having different resonance frequencies are connected to the respective contacts α (n), and the IC chip and the contact β connected to the IC chip are provided on the member. The information carrier is configured to selectively connect the contact β to any one of the contacts α (n) by rotating the turntable, and the IC chip and the antenna form a semiconductor device having an RFID function. I will provide a.

  According to such a configuration, by rotating the turntable and selectively connecting the contact β to any one of the contacts α (n), the antenna connected to the contact α (n) and the turntable are provided. If the IC chip is a semiconductor device having an RFID function and an electromagnetic induction antenna is selected, the magnetic flux can be captured, and if the radio antenna is selected, the radio wave can be captured and the IC chip is operated. A sufficient electromotive force can be generated.

  According to the information carrier of the present invention, by rotating the turntable and selectively connecting the contact β to any one of the contacts α (n), the antenna connected to the contact α (n) and the rotation The IC chip provided on the board constitutes a semiconductor device having an RFID function. When an electromagnetic induction antenna is selected, the magnetic flux can be captured. When the radio antenna is selected, the radio wave can be captured. Sufficient electromotive force can be generated to operate the. Therefore, a semiconductor device having an RFID function can be used, and information recorded on the IC chip can be read and information recorded on the IC chip can be rewritten. Also, a plurality of contacts α (n) are provided at intervals along the outer periphery of the turntable, antennas having different lengths are connected to the respective contacts, and the contacts α (n) and the contacts provided on the IC chip are connected to each other. If selectively connected, information communication with the IC chip is possible according to the resonance frequency and communication distance of each antenna. Furthermore, by using one IC chip and supporting a plurality of antennas, the probability of failure can be reduced as compared with the case where a plurality of IC chips are mounted, so that durability and product life can be extended. Further, by making one of the most expensive IC chips among the members constituting the information carrier, the price can be greatly reduced.

  Hereinafter, an information carrier carrying out the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic sectional view showing a non-contact type IC card as a first embodiment of an information carrier according to the present invention.
In FIG. 1, reference numeral 10 is a non-contact type IC card, 11 is a member for supporting a rotating disk (hereinafter referred to as “support member”), 12 is an IC chip, and 13 is a contact point connected to the IC chip (hereinafter referred to as “support member”). 14 is a conductor, 15 is a rotating disk, 16 is a rotating shaft, 21 is a first antenna, 22 is a first contact, 23 is a second antenna, and 24 is a second. , 25 is a third antenna, 26 is a third contact, 27 is a fourth antenna, 28 is a fourth contact, 29 is a fifth antenna, 30 is a fifth contact, 31 is a sixth contact The antenna 32 is a sixth contact, 33 is a seventh antenna, 34 is a seventh contact, 35 is an eighth antenna, and 36 is an eighth contact.

  The non-contact type IC card 10 is generally composed of a turntable 15 and a support member 11 that supports the turntable 15 so as to be rotatable about a central axis 16.

  The support member 11 is provided with an accommodating portion (not shown) that supports the rotating disk 15 so as to be rotatable about the central axis 16 and accommodates most of the rotating disk 15.

  The turntable 15 is a disk-shaped member, and a first contact 22, a second contact 24, and a third contact are provided on one surface 15 a of the turntable 15 at intervals along the outer periphery of the turntable 15. A contact 26, a fourth contact 28, a fifth contact 30, a sixth contact 32, a seventh contact 34, and an eighth contact 36 are provided. In addition, the first antenna 21 is connected to the first contact 22, the second antenna 23 is connected to the second contact 24, the third antenna 25 is connected to the third contact 26, A fourth antenna 27 is connected to the fourth contact 28, a fifth antenna 29 is connected to the fifth contact 30, a sixth antenna 31 is connected to the sixth contact 32, and a seventh The seventh antenna 33 is connected to the contact 34, and the eighth antenna 35 is connected to the eighth contact 36. Furthermore, the first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the eighth antenna 35 are Each of the conductors has a pole shape or a bent pole shape, and has different lengths depending on a desired resonance frequency or communication distance.

  A first contact 22, a second contact 24, a third contact 26 provided on one surface 15 a of the turntable 15 with the turntable 15 being supported on the inner surface of the housing portion of the support member 11. The IC side contact 13 is provided at a position where it is electrically connected to the fourth contact 28, the fifth contact 30, the sixth contact 32, the seventh contact 34, or the eighth contact 36. In addition, the support member 11 is provided with an IC chip 12 electrically connected to the IC side contact 13 via the conductor 14.

  In the non-contact type IC card 10, the first contact 22, the second contact 24, and the third contact provided on the one surface 15 a of the turntable 15 by rotating the turntable 15 to a predetermined position. 26, the fourth contact 28, the fifth contact 30, the sixth contact 32, the seventh contact 34 or the eighth contact 36 and the IC side contact 13 provided on the IC chip 12 are electrically connected. The first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, or the eighth antenna 35. The IC chip 12 forms a semiconductor device having an RFID function.

 As a material for forming the support member 11, a material in which an area where the IC chip 12, the IC side contact 13 and the conductor 14 are provided is made of an electrically insulating material is used. Such materials include, for example, inorganic fibers such as glass fibers and alumina fibers, or woven fabrics, nonwoven fabrics, mats, papers or combinations thereof made of organic fibers such as polyester fibers and polyamide fibers, or resin varnishes thereof. Composite material molded by impregnation, polyamide resin, polyester resin, polyolefin resin, polyimide resin, ethylene-vinyl alcohol copolymer resin, polyvinyl alcohol resin, polyvinyl chloride resin, polyvinylidene chloride resin , Synthetic resins such as polystyrene resins, polycarbonate resins, acrylonitrile-butadiene styrene copolymer resins, polyethersulfone resins, or mat treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, electron beam irradiation treatment, Can be used frame plasma treatment and ozone treatment, or by selecting from known ones such as those subjected to a surface treatment of various adhesion facilitating treatment.

 The IC chip 12 is not particularly limited, and the first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, and the seventh antenna RDIF such as a non-contact type IC tag, a non-contact type IC label, or a non-contact type IC card as long as information can be written and read out in a non-contact state via the antenna 33 or the eighth antenna 35. Anything applicable to media can be used. As the IC chip 12, specifically, “MM Chip” manufactured by F.C. Co., Ltd. can be suitably used.

 The IC side contact 13 is a conductor made of a solder ball or the like.

  The conductor 14 is made of a conductive film made of a conductive paste, a conductive foil, or the like. As the conductive paste forming the conductor 14, the following first antenna 21, second antenna 23, third antenna 25, fourth antenna 27, fifth antenna 29, sixth antenna 31, The same thing as the conductive paste which comprises the 7th antenna 33 and the 8th antenna 35 is mentioned. Further, as the conductive foil forming the conductor 14, the following first antenna 21, second antenna 23, third antenna 25, fourth antenna 27, fifth antenna 29, and sixth antenna are described. 31, the same thing as the conductive foil which makes the 7th antenna 33 or the 8th antenna 35 is mentioned.

  The turntable 15 includes at least a first contact 22, a second contact 24, a third contact 26, a fourth contact 28, a fifth contact 30, a sixth contact 32, a seventh contact 34, and a first contact. The eighth contact 36, the first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33 and the The surface on which the eight antennas 35 are provided (one surface 15a of the turntable 15) is made of an electrically insulating material. Examples of the material forming the rotating plate 15 include the same materials as the material forming the support member 11.

The first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the eighth antenna 35 are electrically conductive. A conductive film made of a conductive paste, a conductive foil, or the like.
The first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the eighth antenna 35 are formed. Examples of the conductive paste forming the conductor include conductive fine particles such as silver powder, gold powder, platinum powder, aluminum powder, palladium and rhodium, and carbon powder (carbon black, carbon nanotube, etc.) in the resin composition. What was blended is mentioned. Examples of the resin composition forming the conductive paste include a thermosetting resin composition, a photocurable resin composition, an osmotic drying resin composition, and a solvent volatile resin composition.

  Specifically, the conductive paste in which the conductive fine particles as described above are blended with the resin composition contains 60% by mass or more of the conductive fine particles, and includes only the thermoplastic resin or the thermoplastic resin and the crosslinkable resin (particularly, Blended resin composition of polyester and isocyanate-based crosslinked resin, etc., containing polyester resin at 10% by mass or more, that is, solvent volatile type or cross-linked / thermoplastic combined type (however, thermoplastic resin at 50% by mass or more) Containing) or conductive fine particles in an amount of 50% by mass or more, and only a crosslinkable resin (such as a phenol-cured epoxy resin or a sulfonium salt-cured epoxy resin), or a thermoplastic resin and a crosslinkable resin. A blended resin composition, ie, a cross-linked type or a cross-linked / thermoplastic type is preferably used. That.

  Further, when the non-contact type IC card 10 further requires bending resistance, a flexibility imparting agent can be blended in the conductive paste. Examples of the flexibility-imparting agent include polyester-based flexibility imparting agent, acrylic-based flexibility imparting agent, urethane-based flexibility imparting agent, polyvinyl acetate-based flexibility imparting agent, and thermoplastic elastomer-based flexibility. Property imparting agent, natural rubber-based flexibility imparting agent, synthetic rubber-based flexibility imparting agent and the like. In the semiconductor device of the present invention, these flexibility imparting agents are used alone or in combination of two or more.

 The first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the eighth antenna 35 are formed. Examples of the conductive foil forming the conductor include copper foil, silver foil, gold foil, and platinum foil.

 The first contact 22, the second contact 24, the third contact 26, the fourth contact 28, the fifth contact 30, the sixth contact 32, the seventh contact 34, and the eighth contact 36 are soldered. A conductor made of balls or the like.

  In this embodiment, the contactless IC card 10 provided with eight contacts and eight antennas connected thereto is exemplified, but the information carrier of the present invention is not limited to this. In the information carrier of the present invention, contacts α (n) [n is a natural number of 1 or more] are provided at intervals along the outer periphery of the rotating disk, and each contact α (n) has a resonance frequency. The different antennas may be connected, and the supporting member may be provided with an IC chip and a contact β connected to the IC chip.

  In this embodiment, the first antenna 21, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the The non-contact type IC card 10 provided with the pole antenna or the bent pole antenna is illustrated as the eighth antenna 35, but the information carrier of the present invention is not limited to this. In the information carrier of the present invention, as long as electromagnetic induction and a microwave radio wave system are adopted, even if a loop antenna or the like is used, an electromotive force can be obtained. There may also be differences.

Next, a method for using the non-contact type IC card 10 will be described.
The turntable 15 supported by the support member 11 is rotated about the central axis 16. For example, the first contact 22 provided on one surface 15 a of the turntable 15 and the inner surface of the accommodating portion of the support member 11. The IC side contacts 13 provided in the are opposed to each other and are electrically connected.

  Then, when the first antenna 21 and the IC chip 12 constitute a semiconductor device having an RFID function, and an electromagnetic induction type antenna is selected as the first antenna 21, the magnetic flux can be captured and the radio wave type antenna is selected. In this case, radio waves can be captured and sufficient electromotive force can be generated to operate the IC chip 12. Therefore, an induced electromotive force sufficient to operate the IC chip 12 in the first antenna 21 can be generated by electromagnetic induction from the information writing / reading device. Therefore, a semiconductor device having an RFID function can be used, and information recorded on the IC chip 12 can be read or information recorded on the IC chip 12 can be rewritten.

 Similarly, the turntable 15 is rotated so that the second contact 24, the third contact 26, the fourth contact 28, the fifth contact 30, the sixth contact 32, the seventh contact 34, or the eighth contact. By making the contact 36 and the IC side contact 13 face each other and electrically connecting them, the second antenna 23, the third antenna 25, the fourth antenna 27, the fifth antenna 29, and the sixth antenna. 31, the seventh antenna 33 or the eighth antenna 35 and the IC chip 12 constitute a semiconductor device having an RFID function, and information communication with the IC chip 12 is possible according to the resonance frequency and communication distance of each antenna. It becomes.

(Second embodiment)
FIG. 2 is a schematic sectional view showing a non-contact type IC card as a second embodiment of the information carrier according to the present invention.
In FIG. 2, reference numeral 40 denotes a non-contact type IC card, 41 denotes a support member, 42 denotes an IC chip, 43 denotes an IC side contact, 44 denotes a conductor, 45 denotes a rotating disk, 46 denotes a rotating shaft, and 51 denotes a first antenna. , 52 is the first contact, 53 is the second antenna, 54 is the second contact, 55 is the third antenna, 56 is the third contact, 57 is the fourth antenna, and 58 is the fourth contact. Each is shown.

  The non-contact type IC card 40 is generally composed of a rotating disk 45 and a support member 41 that supports the rotating disk 45 so as to be rotatable about a central axis 46.

  The support member 41 is provided with an accommodating portion (not shown) that supports the rotating disk 45 so as to be rotatable about the central axis 46 and accommodates most of the rotating disk 45.

  The turntable 45 is a disk-shaped member, and a first contact 52, a second contact 54, and a third contact are provided on one surface 45 a of the turntable 45 at intervals along the outer periphery of the turntable 45. A contact 56 and a fourth contact 58 are provided. The first antenna 51 is connected to the first contact 52, the second antenna 53 is connected to the second contact 54, the third antenna 55 is connected to the third contact 56, A fourth antenna 57 is connected to the fourth contact 58. Furthermore, the first antenna 51, the second antenna 53, the third antenna 55, and the fourth antenna 57 each have a pole shape or a coil shape, and have different lengths depending on a desired resonance frequency or communication distance. This is a conductive material.

  A first contact 52, a second contact 54, a third contact 56 provided on one surface 45 a of the turntable 45 in a state where the turntable 45 is supported on the inner surface of the housing portion of the support member 41. An IC side contact 43 is provided at a position where it is electrically connected to the fourth contact 58. The support member 41 is provided with an IC chip 42 that is electrically connected to the IC side contact 43 via a conductor 44.

  In this non-contact type IC card 40, the first contact 52, the second contact 54, and the third contact provided on one surface 45a of the turntable 45 are rotated by rotating the turntable 45 to a predetermined position. 56 or the fourth contact 58 and the IC side contact 43 provided on the IC chip 42 are electrically connected, and the first antenna 51, the second antenna 53, the third antenna 55, or the fourth antenna The antenna 57 and the IC chip 42 form a semiconductor device having an RFID function.

Examples of the material forming the support member 41 include the same materials as the material forming the support member 11 described above.
As the IC chip 42, the same one as the IC chip 12 described above can be used.
Examples of the IC side contact 43 include the same ones as the IC side contact 13 described above.
As the conductor 44, the same thing as said conductor 14 is mentioned.

An example of the turntable 45 is the same as the turntable 15 described above.
The first antenna 51, the second antenna 53, the third antenna 55, and the fourth antenna 57 are the first antenna 21, the second antenna 23, the third antenna 25, and the fourth antenna. 27, the fifth antenna 29, the sixth antenna 31, the seventh antenna 33, and the eighth antenna 35.

 The first contact 52, the second contact 54, the third contact 56, and the fourth contact 58 include the first contact 22, the second contact 24, the third contact 26, and the fourth contact. 28, the fifth contact 30, the sixth contact 32, the seventh contact 34, and the eighth contact 36.

  In this embodiment, the contactless IC card 40 provided with four contacts and four antennas connected thereto is illustrated, but the information carrier of the present invention is not limited to this. In the information carrier of the present invention, contacts α (n) [n is a natural number of 1 or more] are provided at intervals along the outer periphery of the rotating disk, and each contact α (n) has a resonance frequency. The different antennas may be connected, and the supporting member may be provided with an IC chip and a contact β connected to the IC chip.

  In this embodiment, the contactless IC card 40 provided with the coil antenna is exemplified as the first antenna 51, the second antenna 53, the third antenna 55, and the fourth antenna 57. The information carrier of the invention is not limited to this. In the information carrier of the present invention, as long as electromagnetic induction and a microwave radio wave system are adopted, even if a loop antenna or the like is used, an electromotive force can be obtained. There may also be differences.

Next, a method for using the non-contact type IC card 40 will be described.
The turntable 45 supported by the support member 41 is rotated about the central axis 46, for example, the first contact 52 provided on one surface 45 a of the turntable 45, and the inner surface of the accommodating portion of the support member 41. The IC side contacts 43 provided in the are opposed to each other and are electrically connected.

  Then, when the first antenna 51 and the IC chip 42 constitute a semiconductor device having an RFID function, and an electromagnetic induction type antenna is selected as the first antenna 51, the magnetic flux can be captured and the radio wave type antenna is selected. In this case, radio waves can be captured and sufficient electromotive force can be generated to operate the IC chip 42. Therefore, an induced electromotive force sufficient to operate the IC chip 42 in the first antenna 51 can be generated by electromagnetic induction from the information writing / reading device. Therefore, a semiconductor device having an RFID function can be used, and information recorded on the IC chip 42 can be read and information recorded on the IC chip 42 can be rewritten.

 Similarly, by rotating the turntable 45, the second contact 54, the third contact 56 or the fourth contact 58 and the IC side contact 43 are opposed to each other, and the two are electrically connected to each other. The antenna 53, the third antenna 55 or the fourth antenna 57, and the IC chip 42 constitute a semiconductor device having an RFID function, and information communication with the IC chip 42 is performed according to the resonance frequency and communication distance of each antenna. Is possible.

  The information carrier of the present invention includes an IC chip, a microwave radio wave antenna and an electromagnetic wave antenna connected to the IC chip, and crosses countries by switching the connection between the IC chip and the antenna. When used as a recognition card or the like, it can be applied to a method of switching communication methods such as a microwave radio wave system in the United States and an electromagnetic wave system in Japan. In addition, when the information carrier of the present invention is used at an event venue or the like, the reception method uses a radio wave method, and the entrance uses an electromagnetic wave method for managing the number of visitors and the like. It can also be applied to.

1 is a schematic cross-sectional view showing a non-contact type IC card as a first embodiment of an information carrier according to the present invention. It is a schematic sectional drawing which shows a non-contact-type IC card as 2nd embodiment of the information carrier which concerns on this invention.

Explanation of symbols

10, 40 ... non-contact type IC card, 11, 41 ... support member, 12, 42 ... IC chip, 13, 43 ... IC side contact, 14, 44 ... conductor, 15 45, rotating plate, 16, 46, rotating shaft, 21, 51 ... first antenna, 22, 52 ... first contact, 23, 53 ... second antenna, 24, 54 ... second contact, 25, 55 ... third antenna, 26, 56 ... third contact, 27, 57 ... fourth antenna, 28, 58 ... 4th contact, 29 ... 5th antenna, 30 ... 5th contact, 31 ... 6th antenna, 32 ... 6th contact, 33 ... 7th antenna, 34 ... seventh contact, 35 ... eighth antenna, 36 ... eighth contact.

Claims (1)

An information carrier comprising a turntable and a member that supports the turntable,
Contacts α (n) [n is a natural number of 1 or more] are provided at intervals along the outer periphery of the rotating disk, and antennas having different resonance frequencies are connected to the contacts α (n), respectively. Is provided with an IC chip and a contact β connected to the IC chip, and by rotating the rotating disk, the contact β is selectively connected to any one of the contacts α (n). An information carrier, wherein the chip and the antenna form a semiconductor device having an RFID function.

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