JP2006227788A - Contactless data receiver and transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contactless data receiver and transmitter which suppresses the increase of a thickness in the contactless data receiver and transmitter, has excellent flexibility, and can be used by inducing electromotive force which fully exceeds the operation electromotive force of an IC chip even when contacting an article containing at least metal. <P>SOLUTION: The contactless data receiver and transmitter 10 comprises: a base material 11; and an inlet 14 which is arranged on one surface 11a of the base material, having an antenna 12 and an IC chip 13 which are mutually connected. The antenna 12 has a coil shape via the IC chip 13. A magnetic material layer 15 is arranged on the base material 11 to cover the antenna 12 and the IC chip 13, excluding both the end parts 12c, 12c of the antenna and its neighbor area. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a non-contact type data receiving / transmitting body capable of receiving information from the outside using electromagnetic waves as a medium, and transmitting information to the outside, such as an information recording medium for RFID (Radio Frequency IDentification).

  In recent years, non-contact type data receivers that can receive information from the outside using electromagnetic waves as a medium, such as information recording media for RFID (Radio Frequency IDentification) applications, such as non-contact IC tags, and can transmit information to the outside. A sender is proposed.

An IC label, which is an example of a non-contact type data receiving / transmitting body, generates an electromotive force in an antenna by a resonance action when receiving an electromagnetic wave from a reader / writer, and the IC chip in the IC label is activated by this electromotive force. This information is converted into a signal, and this signal is transmitted from the antenna of the IC label.
A signal transmitted from the IC label is received by the antenna of the reader / writer, sent to the data processing device via the controller, and data processing such as identification is performed.

  In order for these IC labels to operate, the electromagnetic waves transmitted from the reader / writer must be sufficiently taken into the antenna of the IC label, and an electromotive force greater than the operating electromotive force of the IC chip must be induced. Is attached to the surface of the metal article, the magnetic flux is parallel to the surface of the metal article on the surface of the metal article. For this reason, since the magnetic flux crossing the antenna of the IC label is reduced and the induced electromotive force is lowered, there is a problem that the IC chip is not operated due to being lower than the operating electromotive force of the IC chip (for example, see Non-Patent Document 1). .)

  FIG. 7 is a schematic diagram showing the flow of magnetic flux when an IC label is placed on the surface of a metal article. Since the magnetic flux 102 generated from the reader / writer 101 is parallel on the surface of the metal article 103, the magnetic flux passing through the antenna 105 of the IC label 104 placed on the surface of the metal article 103 is reduced and induced by the antenna 105. Therefore, the IC chip 106 does not operate.

  In order to operate the IC chip even when placed on a metal article, an antenna is wound around the ferrite core, and the axis of the antenna is parallel to the direction of the magnetic flux on the surface of the metal article. There has been proposed a method of increasing the induced electromotive force by increasing the magnetic flux passing through the antenna surface (see, for example, Patent Document 1).

FIG. 8 is a perspective view of an IC tag according to the embodiment of Patent Document 1, in which an antenna 111 is wound around a square ferrite core 115, and a ferrite core is interposed via a base substrate 114 in a portion where the antenna 111 is not wound. An IC chip 112 and a capacitor 113 are mounted on 115.
When the flat portion (the lower surface in FIG. 3) of the square ferrite core 115 of the IC tag is attached to the surface of the metal article, magnetic flux parallel to the surface of the metal article passes through the ferrite core 115. Since it passes at a right angle, the required induced voltage is generated and the IC chip 112 is activated.

  On the other hand, an antenna is formed in a flat shape, and magnetic flux is passed through a magnetic core member provided on the lower surface of the antenna, thereby causing magnetic flux to pass through the antenna formed in a flat shape and generating an induced electromotive force in the antenna. In addition, there is a proposal to provide a conductive member on the lower surface of the magnetic core member to prevent the effect of the article to be placed on the IC label (for example, see Patent Document 2).

FIG. 9 is a cross-sectional view showing an embodiment of Patent Document 2. In FIG. The IC label antenna 121 is composed of a conductor 121a wound in a spiral shape in a plane, and a plate-like or sheet-like magnetic core member 123 bonded to one surface of the IC label antenna 121, and the magnetic core member 123. A conductive material portion 124 is provided on the lower surface of the.
The magnetic core member 123 crosses a part of the IC label antenna 121 on the other surface of the base substrate on which the IC label antenna 121 is provided, and has one end on the outside of the IC label antenna 121. Then, the other end portion is laminated so as to come to the central portion (inside) 122 of the IC label antenna 121.

  When the magnetic core member 123 is laminated in this way, the magnetic flux enters from one end portion of the magnetic core member 123 and escapes from the other end portion, so that the magnetic flux emitted from the other end portion is the IC label antenna 121. And an induced electromotive force is generated in the IC label antenna 121 formed by the conductor 121a. For this reason, even if this IC label is attached to the surface of the article 125 and the magnetic flux direction around the IC label becomes parallel to the surface of the IC label antenna 121, the magnetic flux passes through the IC label antenna 121. . This induces a voltage sufficient to operate the IC chip, so that the IC chip operates reliably.

  Furthermore, in this embodiment, since the conductive member 124 is laminated and bonded so as to cover the magnetic core member 123 on the other surface of the base substrate on which the IC label antenna 121 is provided, the conductive member 124 is attached to the article. Will block the passage of radio waves. Therefore, the IC label antenna 121 is less affected regardless of whether or not the article 125 is a metal, and even if the surface of the article 125 is made of metal, an eddy current generated on the metal surface. Therefore, even if the RFID tag is attached to the metal article 125, the RFID tag operates reliably.

However, in Patent Document 1, if the diameter of the antenna 111 is increased in order to increase the magnetic flux passing through the antenna 111 in order to increase the induced electromotive force, there is a problem that the thickness of the IC label increases.
On the other hand, Patent Document 2 has a problem that the thickness of the IC label increases in this case because the magnetic core member and the conductive member are provided on one surface of the base substrate.

Further, when the thickness of the IC label increases, there is a problem that the flexibility of the IC label is impaired. When the flexibility of the IC label is impaired, it becomes difficult to attach the IC label to the curved surface of the article. In addition, when the IC label is attached to or peeled off from the article, an excessive force is applied to the IC label, which may damage the antenna or the IC chip.
Supervised by Nobuyuki Teraura, “Development and Application of RF Tags-Future of Wireless IC Chips”, First Edition, CMC Publishing, February 28, 2003, p121, Fig. 2 JP 2003-317052 A JP 2003-108966 A

  The present invention has been made in view of the above circumstances, and suppresses an increase in the thickness of a non-contact type data receiving / transmitting body, is excellent in flexibility, and can be used for an IC chip even in contact with an article containing at least a metal. An object of the present invention is to provide a contactless data receiving / transmitting body that can be used by generating an electromotive force sufficiently higher than an operating electromotive force.

  The present invention is a non-contact type data receiving / transmitting body comprising an inlet comprising a base substrate and an antenna and an IC chip which are provided on one surface of the base substrate and connected to each other, wherein the antenna has a coil shape. In addition, there is provided a non-contact type data receiving / transmitting body in which a magnetic layer is arranged on the base substrate so as to cover the antenna and the IC chip except for both end portions and the vicinity thereof.

  According to such a configuration, the magnetic layer is disposed on the base substrate so as to cover the antenna and the IC chip except for both end portions of the antenna and the vicinity thereof. Even when in contact with an article containing at least a metal, the magnetic flux is captured by the antenna through the magnetic layer, so that an induced electromotive force sufficient for operating the IC chip can be generated in the antenna. Moreover, by forming the magnetic layer so as to cover the antenna and the IC chip, the magnetic layer also functions as a protective layer. Furthermore, a part of the conductive portion that connects both ends of the antenna can be provided on the surface of the magnetic layer opposite to the surface in contact with the base substrate.

  The present invention is a non-contact type data receiving / transmitting body comprising an inlet composed of a base substrate and an antenna and an IC chip which are provided on one surface of the base substrate and connected to each other, the antenna being interposed via the IC chip. A non-contact type in which a magnetic layer is disposed on a base substrate so as to cover the antenna except for both end portions and the vicinity thereof, and the IC chip and the vicinity thereof. Provides a data sender / receiver.

  According to such a configuration, the metal layer is disposed on the base substrate so as to cover the antenna except for both ends of the antenna and the vicinity thereof, and the IC chip and the vicinity thereof, so that the metal is at least Even when in contact with the contained article, the magnetic flux is captured by the antenna through the magnetic layer, so that an induced electromotive force sufficient for operating the IC chip can be generated in the antenna. In addition, the magnetic layer is obtained by impregnating a resin with flat magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic layer can be increased in permeability and kept insulative. Therefore, by forming the magnetic layer so as to cover the antenna, the function as a protective layer is exhibited. Furthermore, a part of the conductive portion that connects both ends of the antenna can be provided on the surface of the magnetic layer opposite to the surface in contact with the base substrate. The surface of the magnetic layer opposite to the surface in contact with the base substrate or the surface of the base substrate opposite to the surface in contact with the magnetic layer may be a non-contact type. When the data receiving / transmitting body is bent to come into contact with an article containing at least a metal, the side surface of the IC chip and the side surface of the magnetic layer are difficult to contact with each other. can do.

  It is preferable that a part of the conductive portion connecting both end portions of the antenna is provided on a surface opposite to the surface in contact with the base substrate of the magnetic layer.

  According to such a configuration, the magnetic material layer is obtained by impregnating a resin with flat magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic permeability of the magnetic material layer is increased and the insulating property is increased. Since the magnetic layer also serves as an element of the insulating film and the conductive portion connects both ends of the antenna, it is not necessary to form the conductive portion on the coil portion of the antenna via the insulating film. Since the number of elements (layers, membranes, etc.) constituting the non-contact type data receiving / transmitting body is reduced, each element when the non-contact type data receiving / transmitting body is bent to come into contact with an article containing at least a metal. However, it is easy to follow the change in shape, and as a result, problems such as peeling between elements can be prevented. Further, in the manufacture of the non-contact type data transmitting / receiving body, it is not necessary to form a conductive part on the coil part of the antenna via an insulating film in order to connect the both end parts of the antenna, so that the manufacturing process can be omitted. As a result, manufacturing costs can be reduced.

  It is preferable that a part of the conductive part is provided inside the magnetic layer.

  According to such a configuration, since all the conductive portions for connecting both ends of the antenna are covered with the magnetic layer, disconnection of the antenna due to breakage of the conductive portions can be prevented.

  The conductive portion is preferably made of a polymer type ink containing a flexibility imparting agent.

  According to such a configuration, since the bending resistance of the conductive portion is improved, even when the non-contact type data receiving / transmitting body is bent to come into contact with an article containing at least a metal, the conductive portion is damaged and contactless. It is possible to prevent the communication function of the mold data receiving / transmitting body from being impaired.

  According to the non-contact type data receiving / transmitting body of the present invention, the magnetic material layer is disposed on the base substrate so as to cover the antenna and the IC chip except for both ends of the antenna and the vicinity thereof. Even when in contact with an article containing at least, the magnetic flux is captured by the antenna through the magnetic layer, so that an induced electromotive force sufficient for operating the IC chip can be generated in the antenna. In addition, the magnetic layer is obtained by impregnating a resin with flat magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic layer can be increased in permeability and kept insulative. Therefore, by forming the magnetic layer so as to cover the antenna and the IC chip, the function as a protective layer is also exhibited. Furthermore, a part of the conductive portion that connects both ends of the antenna can be provided on the surface of the magnetic layer opposite to the surface in contact with the base substrate. The magnetic layer is obtained by impregnating a resin with flat magnetic fine particles. By adjusting the mixing ratio of the magnetic fine particles and the resin, the permeability of the magnetic layer can be increased and the insulating property can be maintained. Therefore, if the magnetic layer also serves as an element of the insulating film and a part of the conductive portion that connects both ends of the antenna is provided on the surface opposite to the surface in contact with the base substrate of the magnetic layer, the conductive layer Since the part connects both ends of the antenna, it is not necessary to form a conductive part via an insulating film on the coil part of the antenna. Therefore, the elements (layer, film, etc.) constituting the non-contact type data transmitter / receiver Therefore, when the non-contact type data receiving / transmitting body is bent to come into contact with an article containing at least a metal, each element easily follows a change in shape, and as a result, peeling between each element, etc. Problems can be prevented. Further, in the manufacture of the non-contact type data transmitting / receiving body, it is not necessary to form a conductive part on the coil part of the antenna via an insulating film in order to connect the both end parts of the antenna, so that the manufacturing process can be omitted. As a result, manufacturing costs can be reduced.

  According to the non-contact type data receiving / transmitting body of the present invention, the magnetic material layer is arranged on the base substrate so as to cover the antenna except for both ends of the antenna and the vicinity thereof, and the IC chip and the vicinity thereof. As a result, magnetic flux is captured by the antenna through the magnetic layer even when it is in contact with an article containing at least a metal, so that an induced electromotive force sufficient to operate the IC chip can be generated in the antenna. it can. In addition, the magnetic layer is obtained by impregnating a resin with flat magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic layer can be increased in permeability and kept insulative. Therefore, by forming the magnetic layer so as to cover the antenna and the IC chip, the function as a protective layer is also exhibited. In addition, a part of the conductive portion that connects both end portions of the antenna can be provided on the surface opposite to the surface in contact with the base substrate of the magnetic layer. Furthermore, the magnetic layer is obtained by impregnating a resin with flat magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic layer can be increased in permeability and kept insulative. Therefore, if the magnetic layer also serves as an element of the insulating film and a part of the conductive portion that connects both ends of the antenna is provided on the surface opposite to the surface in contact with the base substrate of the magnetic layer, the conductive layer Since the part connects both ends of the antenna, it is not necessary to form a conductive part via an insulating film on the coil part of the antenna. Therefore, the elements (layer, film, etc.) constituting the non-contact type data transmitter / receiver Therefore, when the non-contact type data receiving / transmitting body is bent to come into contact with an article containing at least a metal, each element easily follows a change in shape, and as a result, peeling between each element, etc. Problems can be prevented. The surface of the magnetic layer opposite to the surface in contact with the base substrate or the surface of the base substrate opposite to the surface in contact with the magnetic layer may be a non-contact type. When the data receiving / transmitting body is bent to come into contact with an article containing at least a metal, the side surface of the IC chip and the side surface of the magnetic layer are difficult to contact with each other. can do. Further, in the manufacture of the non-contact type data transmitting / receiving body, it is not necessary to form a conductive part on the coil part of the antenna via an insulating film in order to connect the both end parts of the antenna, so that the manufacturing process can be omitted. As a result, manufacturing costs can be reduced.

  Hereinafter, a non-contact type data transmitting / receiving body embodying the present invention will be described in detail.

(First embodiment of non-contact type data receiving / transmitting body)
FIG. 1 is a schematic diagram showing a first embodiment of a non-contact type data receiving / transmitting body according to the present invention, where (a) is a plan view, and (b) is a cross section taken along line AA of (a). FIG.
The non-contact type data transmitting / receiving body 10 of this embodiment includes a base substrate 11, an inlet 14 that is provided on one surface 11 a of the base substrate 11 and is connected to each other, and an IC chip 13, and a magnetic layer 15. It is roughly composed of

  In this non-contact type data receiving / transmitting body 10, the antenna 12 has a coil shape via the IC chip 13, and covers the antenna 12 and the IC chip 13 except for both end portions 12c and 12c and the vicinity thereof. A magnetic layer 15 is disposed on the base substrate 11. Here, the region near the both ends 12c of the antenna 12 is a region continuous with the both ends 12c in the antenna 12.

  Further, the first part 16A that connects both ends 12c and 12c of the antenna 12 and forms a part of the conductive part 16 is a surface opposite to the surface of the magnetic layer 15 in contact with the base substrate 11 (hereinafter referred to as “one of the Surface "). 15a. The conductive portion 16 includes a first portion 16A and a second portion 16B provided integrally, and the second portion 16B is provided on one surface 15a of the magnetic layer 15 from both end portions 12c and 12c of the antenna 12. The first portion 16A is provided.

  In the non-contact type data receiving / transmitting body 10, the antenna 12 is provided in a coil shape on the one surface 11 a of the base substrate 11 at a predetermined interval. Furthermore, the thickness of the IC chip 13 is larger than the thickness of the antenna 12.

  In the non-contact type data receiving / transmitting body 10, the antenna 12 and the IC chip 13 constituting the inlet 14 are connected to each other by connecting the end portions of the antenna 12 to the bipolar terminals of the IC chip 13. is there.

  Furthermore, the magnetic material layer 15 is arranged so as to cover the antenna 12 and the IC chip 13 constituting the inlet 14 except for the both end portions 12c and 12c of the antenna 12 and the vicinity thereof. The magnetic material layer 15 covers the antenna 12 and the IC chip 13 so as to be hidden, except for 12c and 12c and the vicinity thereof. It is more preferable that the magnetic layer 15 covers the antenna 12 and the IC chip 13 so that the surface (open surface) of the magnetic layer 15 is flat.

The magnetic layer 15 is composed of a composite containing at least a filler made of magnetic fine particles in a resin. In such a magnetic layer 15, when the non-contact type data transmitting / receiving body 10 is viewed from the one surface 11 a side of the base substrate 11, at least a part of the many magnetic fine particles constituting the magnetic layer 15 is included. One magnetic body which overlaps with each other and is connected is formed.
In addition, between the antennas 12 provided in a coil shape, it is arranged so as to be filled with the composite that forms the magnetic layer 15, and all or part of the magnetic fine particles that form the composite are part of the antenna 12. Arranged in between.

  The first portion 16 </ b> A of the conductive portion 16 is directly provided on the one surface 15 a of the magnetic layer 15. If the first part 16A of the conductive portion 16 is provided directly on the one surface 15a of the magnetic layer 15, the number of elements (layers, films, etc.) constituting the non-contact type data transmitter / receiver 10 is reduced. When the data receiving / transmitting body 10 is bent when coming into contact with an article containing at least a metal, each element can easily follow a change in shape, and as a result, problems such as peeling between the elements can be prevented. it can. Further, in the manufacture of the non-contact type data receiving / transmitting body 10, it is not necessary to provide an insulating film covering the coil portion 12a of the antenna 12 in order to connect the both ends 12c, 12c of the antenna 12, as in the conventional case. Since the process can be omitted, the manufacturing cost can be reduced.

  As the base substrate 11, at least the surface layer portion is made of woven fabric, nonwoven fabric, mat, paper or the like made of inorganic fibers such as glass fiber or alumina fiber, or a combination thereof, or organic fibers such as polyester fibers or polyamide fibers. Woven fabrics, nonwoven fabrics, mats, papers, etc., or combinations thereof, or composite substrates formed by impregnating them with resin varnish, polyamide resin substrates, polyester resin substrates, polyolefin resin substrates Material, polyimide resin substrate, ethylene-vinyl alcohol copolymer substrate, polyvinyl alcohol resin substrate, polyvinyl chloride resin substrate, polyvinylidene chloride resin substrate, polystyrene resin substrate, polycarbonate resin Base material, Acrylonitrile butadiene styrene copolymer resin base material, Polyethers Plastic base materials such as phon resin base materials, or surface treatment such as mat processing, corona discharge processing, plasma processing, ultraviolet irradiation processing, electron beam irradiation processing, flame plasma processing, ozone processing, or various easy adhesion processing. It selects from well-known things, such as what gave. Among these, an electrically insulating film or sheet made of polyethylene terephthalate or polyimide is preferably used.

  The antenna 12 is formed by screen printing in a predetermined pattern on one surface 11a of the base substrate 11 using polymer-type conductive ink, or is formed by etching a conductive foil.

  As the polymer type conductive ink in the present invention, for example, conductive fine particles such as silver powder, gold powder, platinum powder, aluminum powder, palladium powder, rhodium powder, carbon powder (carbon black, carbon nanotube, etc.) are mixed in the resin composition. The thing which was done is mentioned.

If a thermosetting resin is used as the resin composition, the polymer conductive ink becomes a thermosetting type capable of forming a coating film forming the antenna 12 at 200 ° C. or less, for example, about 100 to 150 ° C. The electric current path of the coating film forming the antenna 12 is formed when the conductive fine particles forming the coating film contact each other, and the resistance value of the coating film is on the order of 10 ⁻⁵ Ω · cm.

  Further, as the polymer type conductive ink in the present invention, known ones such as a photo-curing type, a permeation drying type, and a solvent volatilization type are used in addition to the thermosetting type.

  The photocurable polymer type conductive ink contains a photocurable resin in the resin composition and has a short curing time, so that the production efficiency can be improved. Examples of the photocurable polymer conductive ink include, for example, a thermoplastic resin alone or a blend resin composition of a thermoplastic resin and a crosslinkable resin (especially a crosslinkable resin composed of polyester and isocyanate) and 60 masses of conductive fine particles. % Or more and 10% by mass or more of a polyester resin, that is, a solvent volatile type or a crosslinked / thermoplastic combined type (however, the thermoplastic type is 50% by mass or more), or a thermoplastic resin Or a blend resin composition of a thermoplastic resin and a crosslinkable resin (especially a crosslinkable resin composed of polyester and isocyanate), in which a polyester resin is blended in an amount of 10% by mass or more, that is, a crosslinkable type or a crosslinkable / heatable type A plastic combination type is preferably used.

Further, when flexibility is required by the non-contact type data receiving / transmitting body 10, and as a result, further bending resistance is required in the antenna 12, a flexibility imparting agent is blended in the polymer type conductive ink. May be.
Examples of the flexibility imparting agent include a polyester flexibility imparting agent, an acrylic flexibility imparting agent, a urethane flexibility imparting agent, a polyvinyl acetate flexibility imparting agent, and a thermoplastic elastomer flexibility. Include a property-imparting agent, a natural rubber-based flexibility imparting agent, a synthetic rubber-based flexibility imparting agent, and a mixture of two or more thereof.

  On the other hand, examples of the conductive foil forming the antenna 12 include copper foil, silver foil, gold foil, platinum foil, and aluminum foil.

  The IC chip 13 is not particularly limited and may be a non-contact type IC tag, a non-contact type IC label, or a non-contact type as long as information can be written and read out in a non-contact state via the antenna 12. Anything applicable to RFID media such as an IC card can be used.

The composite that forms the magnetic layer 15 is roughly composed of a filler made of magnetic fine particles and a resin.
This composite is formed into a form in which magnetic fine particles are dispersed almost uniformly by applying and drying a magnetic paint containing a filler made of magnetic fine particles, a resin, an additive, and a solvent.

  In addition, as the magnetic fine particles, powdered magnetic powder, or flat flakes obtained by forming the powder by refining the magnetic powder with a ball mill or the like and then mechanically flattening the powder The magnetic substance flake which consists of is mentioned. Among these, flat magnetic particles are preferable. If the magnetic fine particles are flat, at least a part of the many magnetic fine particles constituting the magnetic layer 15 when the non-contact type data transmitting / receiving body 10 is viewed from the one surface 11a side of the base substrate 11 is formed. It is easy to form one magnetic body that overlaps and is connected. Therefore, the magnetic flux is more easily captured by the antenna through the magnetic layer.

  Furthermore, examples of the magnetic powder include sendust (Fe—Si—Al alloy) powder, carbonyl iron powder, atomized powder such as permalloy, and reduced iron powder. Examples of the magnetic flakes include flakes obtained by refining the magnetic powder with a ball mill or the like and molding the powder, and then mechanically flattening the powder, or a molten iron-based or cobalt-based amorphous alloy. Examples include flakes obtained by colliding with a water-cooled copper plate. Among these, as the magnetic fine particles, magnetic powder or magnetic flakes made of Sendust are preferable, and magnetic flakes made of Sendust are more preferable. If the magnetic fine particles are magnetic powder or magnetic flakes made of Sendust, the saturation magnetic flux density and magnetic permeability of the magnetic layer 15 containing these as constituent elements are increased, so that more magnetic flux passes through the magnetic layer and passes through the antenna. It becomes easy to be captured.

  The shape of the magnetic fine particles constituting the magnetic layer 15 does not have to be either powdery or flat. The magnetic layer 15 may include a mixture of powdered magnetic particles and flat magnetic particles. Even if magnetic particles having different shapes are mixed, the non-contact data transmission / reception according to the present invention is possible. The body is fully effective.

  Examples of the resin constituting the composite that forms the magnetic layer 15 include thermoplastic resins, thermosetting resins, and reactive resins.

  Examples of the thermoplastic resin include vinyl chloride, vinyl acetate, vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-acrylonitrile copolymer, acrylate ester-acrylonitrile copolymer, acrylic. Acid ester-vinyl chloride-vinylidene chloride copolymer, acrylic acid ester-vinylidene chloride copolymer, methacrylate ester-vinylidene chloride copolymer, methacrylate ester-vinyl chloride copolymer, methacrylate ester-ethylene copolymer , Polyvinyl fluoride, vinylidene chloride-acrylonitrile copolymer, acrylonitrile-butadiene copolymer, polyamide resin, polyvinyl butyral, cellulose derivatives (cellulose acetate butyrate, cellulose diacetate, cellulose triacetate) , Cellulose propionate, nitrocellulose), styrene butadiene copolymer, polyurethane resin, polyester resin, amino resin, or polymers such as styrene rubber, fluorine rubber, silicone rubber, ethylene / propylene copolymer rubber And synthetic rubber materials.

  Examples of the thermosetting resin or reactive resin include phenol resin, epoxy resin, polyurethane curable resin, urea resin, melamine resin, alkyd resin, silicone resin, polyamine resin, urea formaldehyde resin, and the like.

  In addition, the composite that forms the magnetic layer 15 may contain various pressure-sensitive adhesives in order to impart adhesiveness to the magnetic layer 15.

  Further, examples of the additive contained in the magnetic paint used for forming the composite that forms the magnetic layer 15 include a viscosity modifier, an antifoaming agent, and a leveling agent.

  Furthermore, examples of the solvent contained in the magnetic paint include organic solvents such as cyclohexanone, acetone, benzene, and ethyl.

  The first part 16A of the conductive portion 16 is screen-printed in a predetermined pattern on the one surface 15a of the magnetic layer 15 using the same polymer type conductive ink as that used for forming the antenna 12 described above. It is formed by.

  Further, when more flexibility is required for the non-contact type data receiving / transmitting body 10, it is preferable to add a flexibility imparting agent to the polymer type conductive ink forming the first part 16A of the conductive portion 16. . In this way, since the bending resistance of the first part 16A of the conductive part 16 is improved, the conductive part 16 can be bent even if the non-contact type data receiving / transmitting body 10 is bent to contact an article containing at least a metal. It is possible to prevent the communication function of the non-contact type data receiving / transmitting body 10 from being damaged due to the part 16A being damaged.

  As described above, according to the non-contact type data receiving / transmitting body 10 of this embodiment, the antenna 12 and the IC chip 13 are covered on the base substrate 11 so as to cover the antenna 12 and the IC chip 13 except for both end portions 12c and 12c of the antenna 12 and the vicinity thereof. Since the magnetic layer 15 is disposed on the magnetic layer 15, the magnetic flux is captured by the antenna 12 through the magnetic layer 15 even when the non-contact type data transmitter / receiver 10 is in contact with an article containing at least a metal. The induced electromotive force sufficient to operate the IC chip 13 on the antenna 12 can be generated. Moreover, the magnetic layer 15 is obtained by impregnating a resin with magnetic fine particles, and by adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic permeability of the magnetic layer 15 can be increased and the insulating property can be maintained. Therefore, by forming the magnetic layer 15 so as to cover the antenna 12 and the IC chip 13, the function as a protective layer of these is also exhibited. Furthermore, the magnetic layer 15 is obtained by impregnating a resin with magnetic fine particles. By adjusting the mixing ratio of the magnetic fine particles and the resin, the magnetic permeability of the magnetic layer 15 can be increased and the insulating property can be maintained. Therefore, by providing the first portion 16A of the conductive portion 16 that connects the both end portions 12c and 12c of the antenna 12 on the one surface 15a of the magnetic layer 15 while the magnetic layer 15 also serves as an element of the insulating film, Since the first portion 16A of the conductive portion 16 connects both end portions 12c and 12c of the antenna 12, there is no need to form a conductive portion on the coil portion 12a of the antenna 12 via an insulating film. Since the elements (layers, films, etc.) constituting the transmitter 10 are reduced, when the non-contact type data receiver / transmitter 10 is bent to contact an article containing at least a metal, each element changes in shape. Follow No longer, as a result, it is possible to prevent problems such as peeling between the elements.

(Manufacturing method of non-contact type data transmitter / receiver)
Next, with reference to FIG. 2 and FIG. 3, the manufacturing method of the non-contact type data receiving / transmitting body of this embodiment will be described.
First, an antenna 12 having a predetermined thickness and a predetermined pattern is provided on one surface 11a of the base substrate 11 (antenna formation step).

  In this step, when the antenna 12 is formed of a polymer type conductive ink, the polymer type conductive ink is printed on the one surface 11a of the base substrate 11 so as to have a predetermined thickness and a predetermined pattern by a screen printing method. Thereafter, the polymer type conductive ink is dried and cured to form the antenna 12 having a predetermined thickness and a predetermined pattern.

Further, when the antenna 12 is formed of a conductive foil, the following procedure is followed.
After the conductive foil is bonded to the entire surface of one surface 11a of the base substrate 11, an etching resistant paint is printed on the conductive foil in a predetermined pattern by a silk screen printing method. After drying and solidifying the etching resistant paint, it is immersed in an etching solution to dissolve and remove the copper foil not coated with the etching resistant paint, and the copper foil portion coated with the etching resistant paint is placed on one side of the base substrate 11. The antenna 12 having a predetermined pattern is formed by remaining on the surface.

  Next, as shown in FIG. 2 (a), the contacts 12b, 12b provided on the antenna 12 and the contacts (not shown) provided on the IC chip 13 are made of a conductive material made of conductive paste or solder. Then, the IC chip 13 is mounted on the one surface 11a of the base substrate 11 (IC chip mounting step).

  Next, as shown in FIG. 2B, a magnetic paint containing a filler made of magnetic fine particles, a resin, an additive, and a solvent is applied to one surface 11a of the base substrate 11 by a screen printing method or the like. The antenna 12 and the IC chip 13 are applied so as to be slightly hidden, or are applied so that they are sufficiently hidden. After the magnetic paint is applied, the magnetic layer 15 is formed by allowing it to stand at room temperature or by heating and drying and solidifying at a predetermined temperature for a predetermined time (magnetic layer forming step). In this magnetic layer forming step, as shown in FIGS. 2B and 3, through holes 15 b and 15 b are opened from one surface 15 a of the magnetic layer 15 to both ends 12 c and 12 c of the antenna 12. As described above, the magnetic layer 15 is formed by applying the magnetic paint to the one surface 11 a of the base substrate 11.

  Next, as shown in FIG. 2C, the polymer-type conductive ink is filled in the through holes 15b, 15b of the magnetic layer 15 by screen printing or the like, and one surface 15a of the magnetic layer 15 is filled with After the polymer type conductive ink is printed so as to have a predetermined thickness and a predetermined pattern, the first part 16A and the second part having a predetermined thickness and a predetermined pattern are formed by drying and curing the polymer type conductive ink. A conductive portion 16 made of 16B is formed (conductive portion forming step).

  In this way, the magnetic coating material is applied to one surface 11a of the base substrate 11 so that the through holes 15b and 15b extending from the one surface 15a of the magnetic layer 15 to the both ends 12c and 12c of the antenna 12 are opened. Then, after the magnetic layer 15 is formed, if the conductive portion 16 for electrically connecting the both end portions 12c, 12c of the antenna 12 is provided, the both end portions 12c, 12c of the antenna 12 can be Since it is not necessary to form a conductive portion on the coil portion 12a of the antenna 12 via an insulating film for connection, the manufacturing process can be omitted, and the manufacturing cost can be reduced.

  In this embodiment, the method of forming the antenna 12 is exemplified by the screen printing method and the etching method, but the present invention is not limited to these. In the present invention, the antenna can be formed by a vapor deposition method or an ink jet printing method.

(Second embodiment of non-contact type data receiving / transmitting body)
FIG. 4 is a schematic cross-sectional view showing a second embodiment of the contactless data receiving / transmitting body according to the present invention.
In FIG. 4, the same components as those of the non-contact type data receiving / transmitting body 10 shown in FIG.
The non-contact type data receiving / transmitting body 20 of this embodiment is generally configured by a non-contact type data receiving / transmitting body 10, an adhesive layer 21, a peeling substrate 22, and an upper paper 23.

  In the non-contact type data receiving / transmitting body 20, the adhesive layer 21 is provided so as to cover the non-contact type data receiving / transmitting body 10.

  Moreover, the peeling base material 22 is affixed on the surface (surface affixed on articles | goods) opposite to the surface which contact | connects the magnetic body layer 15 of the adhesive bond layer 21. FIG.

  Further, the upper paper 23 is attached to the surface opposite to the surface in contact with the base substrate 11 of the adhesive layer 21 (the surface not attached to the article).

  Examples of the adhesive forming the adhesive layer 21 include phenol-based, epoxy-based, acrylic-based, and urethane-based adhesives. In addition, a well-known thing can be used suitably also with another adhesive agent.

  Examples of the release substrate 22 include substrates such as paper, synthetic paper, coated paper, polypropylene film, and PET film to which a release agent such as silicone or non-silicone is applied. In addition, as the release agent and the base material, known ones can be used as appropriate.

  Examples of the upper paper 23 include base materials such as paper, synthetic paper, coated paper, polypropylene film, and PET film. In addition, as the release agent and the base material, known ones can be used as appropriate.

  In the non-contact type data receiving / transmitting body 20 of this embodiment, the non-contact type data receiving / transmitting body 10 provided with the magnetic layer 15 is covered with an adhesive layer 21, and is covered with the adhesive layer 21. Since the data receiving / transmitting body 10 is surrounded by the peeling base material 22 and the upper paper 23, dust, dust or the like does not adhere to the magnetic layer 15. Then, the non-contact type data receiving / transmitting body 20 can be affixed to the article such that the magnetic layer 15 is in contact with the article containing the metal by the adhesive layer 21 newly removed by removing the peeling substrate 22. it can. Further, the non-contact type data receiving / transmitting body 20 is provided with the upper paper 23 on the surface opposite to the surface in contact with the base substrate 11 of the adhesive layer 21 (the surface not attached to the article). The upper paper 23 can be provided with a pattern and various information can be printed.

  In this embodiment, the adhesive layer 21 is provided so as to cover a portion of the magnetic layer 15 of the non-contact type data transmitting / receiving body 10 excluding the surface opposite to the surface in contact with the base substrate 11. Although the non-contact type data receiving / transmitting body 20 is illustrated, the non-contact type data receiving / transmitting body of the present invention is not limited to this. In the non-contact type data transmitting / receiving body of the present invention, the adhesive layer may be provided on the surface opposite to the surface in contact with the base substrate of the magnetic layer. In addition, the adhesive layer may not be provided on the surface of the base substrate opposite to the surface on which the antenna and the IC chip are provided.

  Moreover, in this embodiment, the peeling base material 22 is the surface opposite to the surface in contact with the base substrate 11 of the magnetic layer 15 and the surface in contact with the base substrate 11 of the magnetic layer 15 of the adhesive layer 21. The non-contact type data receiving / transmitting body 20 attached to the surface opposite to the surface (surface attached to the article) is exemplified, but the non-contact type data receiving / transmitting body of the present invention is limited to this. Not. In the non-contact type data transmitting / receiving body of the present invention, the peeling base material may be attached only to the surface opposite to the surface contacting the base base material of the magnetic layer.

(Third embodiment of non-contact type data receiving / transmitting body)
FIG. 5 is a schematic sectional view showing a third embodiment of the non-contact type data receiving / transmitting body according to the present invention.
In FIG. 5, the same components as those of the non-contact type data receiving / transmitting body 10 shown in FIG.

  The non-contact type data receiving / transmitting body 30 of this embodiment is different from the above-described non-contact type data receiving / transmitting body 10 in that the first portion 16A of the conductive portion 16 is provided inside the magnetic layer 15. It is.

  In order to manufacture such a non-contact type data receiving / transmitting body 30, after manufacturing the non-contact type data receiving / transmitting body 10 shown in FIG. 1, the first surface 15a of the magnetic layer 15A and the first of the conductive portion 16 are manufactured. The magnetic material layer 15B may be formed by applying a magnetic paint so as to cover the portion 16A and then allowing it to stand at room temperature or by heating and drying and solidifying at a predetermined temperature for a predetermined time.

  In this way, since the conductive portion 16 for connecting the both end portions 12c, 12c of the antenna 12 is entirely covered with the magnetic layer 15, the disconnection of the antenna 12 due to the breakage of the conductive portion 16 can be prevented. Further, since the conductive portion 16 does not exist on the surface of the non-contact type data receiving / transmitting body 30, the surface of the non-contact type data receiving / transmitting body 30 can be flattened. This makes it easier to print on the screen.

(Fourth embodiment of non-contact type data receiving / transmitting body)
6A and 6B are schematic views showing a fourth embodiment of the non-contact type data receiving / transmitting body according to the present invention, wherein FIG. 6A is a plan view, and FIG. FIG.
In FIG. 6, the same components as those of the contactless data receiving / transmitting body 10 shown in FIG.

  The non-contact type data receiving / transmitting body 40 of this embodiment is different from the above-described non-contact type data receiving / transmitting body 10 in that both end portions 12c and 12c of the antenna 12 and the vicinity thereof, and the IC chip 13 and the vicinity thereof. The magnetic layer 15 is arranged on the base substrate 11 so as to cover the antenna 12 except for the region.

  In the non-contact type data transmitting / receiving body 40, a gap is provided between the side surface 13 a of the IC chip 13 and the side surface 15 c of the magnetic layer 15.

  The size of the gap between the side surface 13a of the IC chip 13 and the side surface 15c of the magnetic layer 15 is not particularly limited, and the shape of a curved surface such as a metal article to which the non-contact type data transmitter / receiver 10 is attached, It is set appropriately according to the shape and size of the IC chip 13.

  Further, the side surface 15c of the magnetic layer 15 located at the position facing the side surface 13a of the IC chip 13 gradually opens from the surface of the magnetic layer 15 in contact with the antenna 12 toward the one surface 15a of the magnetic layer 15. Has a tapered shape.

  The taper shape of the side surface 15b of the magnetic layer 15 located at the position facing the side surface 13a of the IC chip 13 is not particularly limited, and the metal to which the non-contact type data transmitter / receiver 10 is attached is attached. It is set as appropriate according to the shape of the curved surface of the article or the like, the shape and size of the IC chip 13, and the like.

  According to the non-contact type data receiving / transmitting body 40 of this embodiment, the base substrate is covered so as to cover the antenna 12 except for both end portions 12c and 12c of the antenna 12 and the vicinity thereof, and the IC chip 13 and the vicinity thereof. 11, when the non-contact type data receiving / transmitting body 40 is bent to come into contact with an article containing at least a metal, the magnetic layer 15 follows the change in shape. As a result, problems such as delamination between components can be prevented.

  Further, a gap is provided between the side surface 13a of the IC chip 13 and the side surface 15c of the magnetic layer 15, and further, the side surface 15c of the magnetic layer 15 at a position facing the side surface 13a of the IC chip 13 is replaced with a magnetic material. If the taper shape has an opening diameter that gradually increases from the surface of the layer 15 in contact with the antenna 12 toward the one surface 15 a of the magnetic layer 15, the one surface 15 a of the magnetic layer 15 or the magnetic properties of the base substrate 11. When any of the surfaces opposite to the surface in contact with the body layer 15 is attached to the article, the IC chip is formed when the non-contact type data receiving / transmitting body 40 is bent so as to contact the article containing at least metal. Since the side surface 13a of the magnetic layer 13 and the side surface 15c of the magnetic layer 15 are difficult to contact with each other, the IC chip 13 can be prevented from being damaged due to the contact between both.

  The non-contact type data receiving / transmitting body of the present invention is not limited to an IC tag or the like that is incorporated between two base materials, but is a non-contact type data that is used by being peeled off from a peeling base material. It can also be applied to a transmission / reception body.

It is the schematic which shows 1st embodiment of the non-contact-type data transmission / reception body which concerns on this invention, (a) is a top view, (b) is sectional drawing which follows the AA line of (a). It is a schematic sectional drawing which shows the manufacturing method of 1st embodiment of the non-contact-type data transmission / reception body which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional plan view showing a manufacturing method of a first embodiment of a non-contact type data receiving / transmitting body according to the present invention. It is a schematic sectional drawing which shows 2nd embodiment of the non-contact-type data transmission / reception body which concerns on this invention. It is a schematic sectional drawing which shows 3rd embodiment of the non-contact-type data transmission / reception body which concerns on this invention. It is the schematic which shows 4th embodiment of the non-contact-type data transmission / reception body which concerns on this invention, (a) is a top view, (b) is sectional drawing which follows the BB line of (a). It is a schematic diagram which shows the flow of the magnetic flux at the time of mounting the normal non-contact-type data transmission / reception body on the surface of a metal article. It is a schematic perspective view which shows an example of the conventional non-contact type data receiving / transmitting body. It is a schematic sectional drawing which shows the other example of the conventional non-contact type data receiving / transmitting body.

Explanation of symbols

10, 20, 30, 40: Non-contact type data receiving / transmitting body, 11 ... Base substrate, 12 ... Antenna, 13 ... IC chip, 14 ... Inlet, 15 ... Magnetic Body layer, 16 ... conductive portion, 21 ... adhesive layer, 22 ... release substrate, 23 ... upper paper.

Claims (5)

A non-contact type data receiving / transmitting body comprising an inlet comprising a base substrate and an antenna and an IC chip provided on one surface of the base substrate,
The antenna has a coil shape through the IC chip, and a magnetic layer is disposed on the base substrate so as to cover the antenna and the IC chip except for both end portions and the vicinity thereof. A non-contact type data receiving / transmitting body. A non-contact type data receiving / transmitting body comprising an inlet composed of a base substrate and an antenna and an IC chip provided on one surface of the base substrate,
The antenna is formed in a coil shape via the IC chip, and a magnetic layer is formed on the base substrate so as to cover the antenna except for both end portions and the vicinity thereof, and the IC chip and the vicinity thereof. A non-contact type data receiving / transmitting body characterized in that is arranged.   The part of the conductive part that connects both ends of the antenna is provided on a surface opposite to a surface that contacts the base substrate of the magnetic layer. Non-contact type data receiver / transmitter.   The non-contact type data transmitting / receiving body according to claim 1, wherein a part of the conductive portion is provided inside the magnetic layer. The non-contact type data transmitter / receiver according to claim 1, wherein the conductive portion is made of a polymer type ink including a flexibility imparting agent.

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