Non-contact ic card

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a non-contact IC card used for a ticket, a telephone card, a baggage tag, etc. and for communicating data by an external radio wave, and particularly to an IC card suitable for preventing forgery of the card. ..

【0002】

[Conventional technology]

In recent years, small electronic devices equipped with IC chips as new information recording media for commuter passes and the like used for personal information management, physical distribution management, commuting to school, etc. are becoming widespread. In particular, card-type large-capacity variable information recording media called IC cards, which are convenient for portable use, have begun to spread widely. Among them, contactless IC cards exchange data by non-contact via radio waves, so they are recording media that replace tickets with a magnetic recording layer on one side, such as conventional tickets and commuter passes. It is attracting attention as. In particular, it is expected that convenience will be greatly improved because data can be exchanged even from a regular bag or a bag without taking out the ticket one by one when passing through the ticket gate. In the field of logistics as well, RFID tags, which replace barcodes and magnetic records and exchange data with mobile objects by radio waves, are becoming mainstream. It is also useful as an ID card for security management such as entry / exit management and identification cards. Although it is commonly called an IC card, it is not necessarily in the form of a card, but there are also various forms such as a sheet-like one to be attached to an object, a tag enclosed in a container, and a wristwatch type. In this specification as well, the IC card is used as including a card other than the card shape.

【0003】

[Problems to be Solved by the Invention]

Generally, a card is provided with an anti-counterfeit function by providing a hologram or a face photograph on the surface of the card. However, contactless IC cards are designed for repeated use. For example, the contents such as the period of use may be updated, or collected and reused after use. In this case, if information such as a face photo is formed on the card itself, the contents cannot be updated. In commuter passes and the like, a rewritable heat-sensitive recording layer is formed on the surface of the card so that information can be updated, but such a recording layer cannot perform full-color recording. A card that makes full-color recording on an adhesive label, sticks it on the surface of the card, and updates the label when it is reused is being considered, but there is a possibility that the label may be replaced illegally, so it is counterfeit. The current situation is that it does not function sufficiently as a preventive measure. The present invention is to provide a contactless IC card having new anti-counterfeiting.

【0004】

[Means for solving problems]

The present invention is for (1) a non-contact IC card having an IC chip and an antenna and communicating information in a non-contact state with an external reader / writer, and for authenticity confirmation capable of communicating in a non-contact state. It is a contactless IC card characterized by having an IC chip. (2) The contactless IC card described in (1), in which the IC chip for authenticity confirmation communicates at a frequency different from the frequency used for information communication. (3) The IC chip for authenticity confirmation is the non-contact IC card according to (1) or (2) that communicates with an antenna formed on the chip. (4) The non-contact according to any one of (1) to (3), wherein at least a part of the information stored in the IC chip for authenticity confirmation is stored in the IC chip having the function of an IC card. It is a type IC card. (5) The non-contact type IC according to any one of (1) to (4), which is configured by attaching a label having an IC chip for authenticity confirmation capable of communicating in a non-contact state on the surface of the card. It is a card.

【0005】

BEST MODE FOR CARRYING OUT THE INVENTION

The antenna is a method of attaching a coil made of wire such as silver or copper to an insulating sheet having a thickness of 20 to 100 μm made of resin such as polyethylene terephthalate, polypropylene, or polyethylene, or a method of etching copper or aluminum into a coil shape. , A coiled antenna printed in a coil shape using conductive ink, etc., or an insulating sheet made of resin or paper such as polyethylene terephthalate, polypropylene, polyethylene, etc., printed using conductive ink, etc., or copper, aluminum, etc. A plate-shaped antenna or the like on which metal is vapor-deposited can be used.

【0006】

As the IC chip, various known IC chips having at least a part for storing data and a part for calculating and controlling data can be appropriately used. IC chips that are protected by a resin film, resin plate, etc. can also be used. In addition to this, it is also possible to arrange a capacitor or the like on the contactless IC card as appropriate. Recently, a data storage element printed on an insulating sheet using conductive ink or the like and combined with an IC chip has been proposed by Motorola under the trade name BiStatix. Such a data storage element is also applied in the present invention. it can.

【0007】

The present invention is characterized in that such a non-contact IC card is provided with an IC chip for authenticity confirmation capable of communicating in a non-contact state. The authenticity confirmation IC chip may be inside or on the surface of the card, but it is preferable to arrange the IC chip so that the presence of the chip cannot be visually recognized. For example, in a non-contact IC card, a plurality of sheets such as an inlet sheet on which an antenna and an IC chip are arranged, a front sheet, and a back sheet are laminated, and it is preferable to sandwich the card in one of them. When the inlet sheet and the front surface sheet or the back surface sheet are bonded to each other, it is advisable to form a card by thermocompression bonding with the IC chips for authenticity confirmation stacked.

【0008】

Further, when a label for display is attached to the surface, it can be arranged on the surface of the pressure-sensitive adhesive layer of the label, in the pressure-sensitive adhesive layer, between the pressure-sensitive adhesive layer and the base material of the label, and in the base material of the label. .. For example, when manufacturing a label, the pressure-sensitive adhesive layer may be formed on a release sheet, an IC chip for authenticity confirmation may be placed on the pressure-sensitive adhesive layer, and the base material of the label may be laminated to form the label. Alternatively, a label having a label substrate and an adhesive layer may be formed, and an IC chip for authenticity confirmation may be placed on the card when the label is attached. The former method of forming a label having an IC chip for confirming authenticity is preferable because a defect of the IC chip can be confirmed using a reader before sticking.

【0009】

The non-contact IC card of the present invention can confirm the authenticity by reading the existence of the IC chip for authenticity confirmation or the data stored in the IC chip for authenticity confirmation with a reader. it can.

【0010】

For example, the communication distance of the IC card used for information communication and the communication distance of the IC chip for authenticity confirmation may be different. For example, if you normally use it at a distance of 5 cm or more from the reader / writer and bring it closer to 1 cm or less when checking the authenticity, the IC chip for authenticity confirmation can be read by the reader. It is good to do it.

【0011】

Further, it is preferable that the IC chip for authenticity confirmation communicates at a frequency different from the frequency used for information communication because it does not affect the normal information communication. For example, the frequency of normal information communication should be 13.56 MHz, and the frequency of IC chip communication for authenticity confirmation should be 2.45 GHz.

【0012】

It is preferable that the IC chip for authenticity confirmation has an antenna having a structure different from that used for information communication. If both antennas are coiled antennas, the antennas may interfere with each other and normal communication may not be possible. For example, when the antenna used for information communication has a coil shape, the IC chip for authenticity confirmation can be, for example, a plate-shaped antenna or an antenna formed on the chip. In particular, it is preferable to use an IC chip that communicates with an antenna formed on the chip because it can be formed without arranging an antenna for a new authenticity confirmation IC chip on the card. Further, the authenticity confirmation IC chip is preferably a read-only memory in which data cannot be rewritten.

【0013】

The present invention can confirm the authenticity by reading the data of the IC chip for authenticity confirmation and the presence / absence of the IC chip for authenticity confirmation, but it is further stored in the IC chip for authenticity confirmation. It is preferable that at least a part of the information is stored in an IC chip having a function of an IC card because falsification can be further prevented. For example, it is advisable to record the management code of the IC chip for authenticity confirmation. It is also preferable to manage the management code and IC card information on a server or the like. It is also possible to encrypt or compress the information.

【0014】

In the present invention, the authenticity confirmation IC chip may be placed at any position on the card, but a label having the authenticity confirmation IC chip capable of communicating in a non-contact state is attached to the surface of the card. The configured configuration is particularly preferred. Examples of the label include a label having an image such as a face photograph, a label having information such as an expiration date, and a label such as a hologram. In particular, a label having an image of a facial photograph is preferable because the image of the user and the image of the card can be compared. The image or information may be formed after being attached to the card, or the image or information formed earlier may be attached. For example, if the label is replaced with another label for counterfeiting, the label does not have an IC chip for authenticity confirmation, so that the reader can confirm that the label is counterfeit.

【0015】

To form the image and information of the label, it is preferable to record with a printer such as a thermal recording method, a thermal transfer recording method, an inkjet recording method, or an electrophotographic recording method. In addition, a recording layer suitable for each printer may be formed on the label. After recording, a protective layer can be formed or a protective film can be attached to protect the image or information.

【0016】

As the label adhesive, known adhesives such as acrylic, rubber, vinyl ether, and urethane can be used. If the label is to be replaced when the data is updated, it is advisable to use a removable adhesive.

【0017】

[Example]

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is, of course, not limited thereto. Unless otherwise specified, parts and% in the example indicate parts by mass and% by mass, respectively.

【0018】

Example 1 "Creation of inlet sheet" A PET film with a thickness of 188 μm (product name: UP2W, manufactured by Teijin Dupont) was used. A copper foil antenna circuit with a thickness of 35 μm was formed on this film by an etching method. In addition, a 20 μm high connection bump was printed. IC chip (4 mm x 4 mm, 250 μm thickness, product name: Felica, manufactured by Sony) is used with an anisotropic conductive film adhesive (product name: FC161A, manufactured by Hitachi Kasei) with a thickness of 50 μm. I got an inlet sheet by connecting to.

【0019】

"Creation of non-contact IC card" A small wireless recognition IC chip (0.3 mm x 0.4 mm, thickness 170 μm, product name: with on-chip antenna) as an IC chip for authenticity confirmation near the center of one side of this inlet sheet Place a mu chip (manufactured by Hitachi, Ltd.), sandwich both sides of the inlet sheet with a sheet-like hot melt adhesive (product name: Aronmelt PES-111EEW, manufactured by Toagosei) with a thickness of 200 μm, and then sandwich the outside with two sheets of 300 μm. It was sandwiched between white PET-G films (product name: PG-WHI, manufactured by Mitsubishi Resin), and this laminate was hot-pressed using a hot-pressing device. A metal plate for compression (thickness 1 mm, made of SUS304, manufactured by Kawasaki Steel Co., Ltd.) was used as the metal plate for compression, the temperature was raised to 120 ° C, and crimping was performed at a pressure of 300 kPa to obtain a non-contact IC card. This non-contact IC card was read by a reader with a frequency of 2.45 GHz and the data held by the IC chip for authenticity confirmation, and a part of the data was written to the IC chip (trade name: FeliCa) at a frequency of 13.56 MHz.

【0020】

"Evaluation" The obtained contactless IC card was able to read and write information with a reader / writer with a frequency of 13.56 MHz, and was able to read the data of the IC chip for authenticity confirmation with a reader with a frequency of 2.45 GHz. In addition, it was confirmed that the readings at the frequency of 13.56MHz and the readings at the frequency of 2.45GHz had the same data part.

【0021】

Example 2 "Creation of recording sheet" On one side of a PET composite film (thickness 50 μm, manufactured by Toray Industries, Inc., trade name: 50E63), a coating liquid having the following composition was applied as a recording layer (heat transfer receiving layer) with a solid content of 8 g / m.²It was coated and dried by the die coating method. [Coating liquid for recording layer] Saturated polyester resin (Toyobo, trade name: Byron 200) 100 copies -Silicone resin (made of Torre Dow Corning Silicone, Product name: SH3746) 5 copies This was diluted to 18% with a mixed solvent of toluene / methyl ethyl ketone = 5/1.

【0022】

"Creation of release sheet" Polyethylene resin is laminated on both sides of woodfree paper, and a silicone release agent (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: KS-830) is applied to one side of the paper with a solid content of 0.6 g / m.²A release agent layer was formed by coating and drying so as to obtain a release sheet.

【0023】

"Creating a label" On the release agent layer of the release sheet, apply a coating liquid for the adhesive layer with the following composition in solid content of 15 g / m²It was coated and dried so that it became. After placing a small wireless recognition IC chip (0.3 mm x 0.4 mm, thickness 170 μm, product name: mu chip with on-chip antenna, manufactured by Hitachi, Ltd.) as an IC chip for authenticity confirmation on this coated surface, the above The recording sheets were laminated to obtain a label. [Coating liquid for adhesive layer] 100 copies of acrylic adhesive (manufactured by Nippon Carbide, product name: PE-115E) Isocyanate-based curing agent (manufactured by Nippon Carbide, product name: CK-101) 1 copy Epoxy-based curing agent (manufactured by Nippon Carbite, product name: CK-202) 3 copies This was diluted to 20% with an ethyl acetate solution.

【0024】

"Label quality confirmation" The obtained labels were read with a reader with a frequency of 2.45 GHz, those that could not be read were removed as defective products, and the remaining labels were used as labels for contactless IC cards.

【0025】

"Creation of non-contact IC card" A commercially available sublimation video printer (manufactured by Sony, trade name: UP-1800) is used on the recording layer of the obtained label to form an image of a facial photograph, and then a release sheet is attached. It was peeled off and affixed to the surface of a commercially available non-contact IC card (manufactured by NTT, IC telephone card) via the adhesive layer that appeared.

【0026】

The contactless IC card obtained in the "evaluation" could be used in a public telephone for IC cards. In addition, a reader / writer with a frequency of 2.45 GHz was able to read the data of the IC chip for authenticity confirmation.

【0027】

[Effect of the invention]

Since the non-contact IC card of the present invention uses an IC chip for authenticity confirmation, it is useful for unprecedented anti-counterfeiting. Further, since it is formed inside the card, it is not clear from the appearance that anti-counterfeiting means are applied, and the anti-counterfeiting effect is excellent. Furthermore, by providing an IC chip for authenticity confirmation on the label itself, it also has an effect of preventing forgery due to reattachment of the label.