JP2011013795A - Non-contact type data reception/transmission body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact type data reception/transmission body wherein a hard base material is prevented from breaking along a through-hole even if external force is applied to the hard base material such that the hard base material is bent in a long direction thereof.SOLUTION: The non-contact type data reception/transmission body 10 includes: the hard base material 11; a planar first electric conductor 14 formed on one face 11a thereof; a planar second electric conductor 15 formed on the other face 11b thereof; an antenna 12 penetrating the hard base material 11, and comprising a third electric conductor 16 connecting the first electric conductor 14 and the second electric conductor 15; and an IC chip 13 connected with the antenna 12. The first electric conductor 14 and the second electric conductor 15 are oppositely disposed through the hard base material 11, and are formed with the through-hole 11c penetrating the hard base material 11 in a thickness direction, and extending to between two sides 11e, 11f of the hard base material 11. A part of the through-hole 11c is disposed aslant to the two sides 11e, 11f, and the third electric conductor 16 is formed on the inside of the through-hole 11c.

Description

  The present invention is a non-contact type data that can receive information from the outside using radio waves, mainly microwaves as a medium, and transmit information to the outside, such as an information recording medium for RFID (Radio Frequency IDentification). Regarding the transmitter / receiver, in particular, even if directly attached to a metal article, information is received from the outside in a non-contact state, and information can be transmitted to the outside, and the antenna is disconnected due to an impact from the outside, The present invention relates to a non-contact type data receiving / transmitting body that prevents the communication function from deteriorating.

An IC tag, which is an example of a non-contact type data transmitting / receiving body, includes an inlet composed of a base material, an antenna provided on one surface thereof and connected to each other, and an information writing / reading When a radio wave or electromagnetic wave from the device is received, an electromotive force is generated in the antenna by a resonance action, and the IC chip in the IC tag is activated by this electromotive force, and the information in the IC chip is converted into a signal. Transmitted from the antenna.
A signal transmitted from the IC tag is received by the antenna of the information writing / reading device, sent to the data processing device via the controller, and data processing such as identification is performed.

  In order for the IC tag to operate, radio waves or electromagnetic waves transmitted from the information writing / reading device must be sufficiently taken into the antenna of the IC tag, and an electromotive force higher than the operating electromotive force of the IC chip must be induced. However, when an IC tag is affixed to the surface of a metal article, the magnetic flux on the surface of the metal article is parallel to the surface of the metal article, so that the magnetic flux across the antenna of the IC tag decreases and the induced electromotive force decreases. As a result, there is a problem that the IC chip does not operate because the operating electromotive force of the IC chip is lower.

Therefore, as shown in FIG. 4, the base 101 is provided along the one surface 101a and the other surface 101b of the base 101, and the side surface 101c connected to the one surface 101a and the other surface 101b. Proposed is an IC tag 100 that includes an antenna 103 having a U-shaped cross section in the thickness direction of a base material 101 and an IC chip 104 electrically connected to the antenna 103. (For example, refer to Patent Document 1).
Even if the IC tag 100 is affixed to a metal article, an electromotive force greater than the electromotive force of the IC chip 104 is generated, so that the IC chip 104 operates and information can be transmitted and received.

  In this IC tag 100, a conductor 102 that forms an antenna 103 is provided at the boundary between one surface 101a of the substrate 101 and the other surface 101b and the side surface 101c, that is, at the corner of the substrate 101. Since the connection portions between the conductors 102 provided on each surface are exposed at the corners of 101, the connection portions are easily damaged by an external force, and the antenna 103 is disconnected at that portion, and the IC tag 100 cannot communicate. There was a risk of becoming.

Accordingly, the present inventors have devised an IC tag 110 as shown in FIG. 5 in order to prevent disconnection of the antenna.
The IC tag 110 includes a hard base 111, a planar first conductor 112 provided on one surface 111 a of the hard base 111, and a planar shape provided on the other surface 111 b of the hard base 111. The second conductor 113 and the third conductor 114 that penetrates the hard base material 111 in the thickness direction and connects the first conductor 112 and the second conductor 113 at one end of these conductors. Antenna 115 and an IC chip 116 electrically connected to the antenna 115.

  The third conductor 114 penetrates the hard base 111 in the thickness direction and extends in parallel with the short side of the hard base 111, that is, from one surface 111a of the hard base 111 to the other. In a through hole 111c having a substantially rectangular shape in plan view provided substantially perpendicular to the hard base 111 over the surface 111b, the through hole 111c is provided on the inner side surface.

International Publication No. 2008/071971 Pamphlet

  In order to increase the effective area of the antenna 115 (first conductor 112, second conductor 113) on one surface 111a and the other surface 111b of the hard base 111, as shown in FIG. A through hole 111 c is provided at one end of the material 111 in parallel with the short side of the hard base 111. Further, an external force is often applied to the IC tag 110 having such a shape in the longitudinal direction of the hard base 111 during use. However, when the through hole 111c is arranged in this way, the hard base 111 has insufficient mechanical strength at the portion of the through hole 111c, so that the hard base 111 is in the longitudinal direction with respect to the IC tag 110. When an external force is applied so as to bend, as shown in FIGS. 6 and 7, a portion (end portion) outside the through hole 111 c in the hard base material 111 may break along the through hole 111 c. The breakage of the hard base material 111 exposes the third conductor 114 and not only easily damages the connection between the third conductor 114 and the first conductor 112 or the second conductor 113, but also As the hard base material 111 is broken, the third conductor 114 provided on the inner surface of the through hole 111c may be disconnected, and the IC tag 110 may be unable to communicate.

  The present invention has been made in view of the above circumstances, and even when an external force is applied to the hard base so as to bend in the longitudinal direction, the hard base is prevented from breaking along the through hole. An object of the present invention is to provide a contactless data receiving / transmitting body.

  The non-contact type data transmitting / receiving body of the present invention includes a hard substrate, a planar first conductor provided on one surface of the hard substrate, and a surface provided on the other surface of the hard substrate. A second conductor, and a third conductor that penetrates the hard base material in the thickness direction to connect the first conductor and the second conductor; An IC chip connected to the first and second conductors, the first conductor and the second conductor being opposed to each other with the hard substrate interposed therebetween, A through hole extending through the base material in the thickness direction and extending between two opposing sides of the hard base material is provided, and at least a part of the through hole is inclined with respect to one side of the hard base material And the third conductor is provided in the through hole.

  The hard base material is preferably a base material made of glass epoxy resin.

According to the non-contact type data transmitting / receiving body of the present invention, the hard base, the planar first conductor provided on one surface of the hard base, and the other surface of the hard base are provided. A planar second conductor, an antenna composed of a third conductor that penetrates the hard base material in the thickness direction and connects the first conductor and the second conductor, and the antenna An electrically connected IC chip, wherein the first conductor and the second conductor are arranged to face each other with the hard substrate interposed therebetween, A through hole extending through the hard base material in the thickness direction and extending between two opposite sides of the hard base material is provided, and at least a part of the through hole is provided on one side of the hard base material. Since the third conductor is disposed obliquely and inside the through hole, the non-contact type data is provided. Even if an external force is applied to the transmitter / receiver so that the hard base material bends in the longitudinal direction, it is difficult to apply force intensively to both ends of the through hole. Breakage can be prevented. Therefore, it is possible to prevent the third conductor from being exposed due to the breakage of the hard base material and damage the connection portion between the third conductor and the first conductor or the second conductor. As the base material breaks, it is possible to prevent the third conductor provided in the through hole from being disconnected and the non-contact type data transmitting / receiving body from becoming incapable of communication.
Further, the antenna has a planar shape, and the first conductor and the second conductor constituting the antenna have a length on one side and a length on the other side with respect to two opposite sides of the hard base material. Therefore, it is possible to maintain a wide bandwidth.

It is a schematic perspective view which shows 1st embodiment of the non-contact-type data transmission / reception body of this invention. It is a schematic plan view which shows 2nd embodiment of the non-contact-type data transmission / reception body of this invention. It is a schematic plan view which shows 3rd embodiment of the non-contact-type data transmission / reception body of this invention. It is a schematic perspective view which shows an example of the conventional non-contact type data receiving / transmitting body. It is a schematic perspective view which shows the other example of the conventional non-contact-type data receiving / transmitting body. It is a schematic plan view explaining the subject in the conventional non-contact type data receiving / transmitting body. It is a schematic plan view explaining the subject in the conventional non-contact type data receiving / transmitting body.

An embodiment of the non-contact type data receiving / transmitting body of the present invention will be described.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the present invention unless otherwise specified.

(1) First Embodiment FIG. 1 is a schematic perspective view showing a first embodiment of a contactless data receiving / transmitting body of the present invention.
The non-contact type data transmitting / receiving body 10 of this embodiment includes a hard base 11 having a rectangular shape in plan view, an antenna 12 provided so as to be in contact with the hard base 11, and an IC electrically connected to the antenna 12. The chip 13 is schematically configured.
The antenna 12 includes a planar first conductor 14 provided on one surface 11 a of the hard base material 11 and a planar second conductor 15 provided on the other surface 11 b of the hard base material 11. And on the one end portion 11 </ b> A side of the hard base material 11, the third base material 16 that penetrates the hard base material 11 in the thickness direction and connects the first conductor 14 and the second conductor 15, and a ground 17. Has been.
Further, the IC chip 13 is connected to a power feeding point provided on the first conductor 14 via an adhesive on one surface 11a of the hard base 11.

The first conductor 14 is formed from a conductive film having a trapezoidal shape in plan view provided so as to extend in the long side direction (longitudinal direction) of the hard base material 11 on one surface 11 a of the hard base material 11. Has been. Similarly, the second conductor 15 has a trapezoidal conductive shape in plan view provided so as to extend in the long side direction (longitudinal direction) of the hard base material 11 on the other surface 11b of the hard base material 11. It is formed from a film.
Further, the first conductor 14 and the second conductor 15 are arranged to face each other with the hard base material 11 interposed therebetween. The first conductor 14 and the second conductor 15 are in a parallel relationship. That is, in detail, the first conductor 14 and the second conductor 15 are arranged symmetrically with respect to the hard substrate 11.

The hard base material 11 has a through hole 11c that penetrates the hard base material 11 in the thickness direction and extends between two long sides 11e and 11f facing each other in the hard base material 11 in a plan view. Is provided. Further, the through hole 11c is disposed obliquely with respect to the long sides 11e and 11f of the hard base material 11.
Here, "the through hole 11c extends between the two long sides 11e and 11f facing each other in the hard base material 11" means that the through hole 11c is between the long sides 11e and 11f of the hard base material 11. It is provided over the area.

  The third conductor 16 is formed on the entire inner side surface 11d of the through hole 11c in the through hole 11c of the hard base material 11, that is, from one surface 11a of the hard base material 11 to the other surface 11b in the through hole 11c. Is provided. The through hole 11c provided with the third conductor 16 is not filled with the third conductor 16, but has a hole extending from one surface 11a of the hard base 11 to the other surface 11b. is doing.

  Furthermore, the third conductor 16 is connected to the first conductor 14 at the opening on the one surface 11a side of the hard base material 11 in the through hole 11c, while the other of the hard base material 11 in the through hole 11c. The second conductor 15 is connected to the opening on the surface 11b side. Thereby, the first conductor 14 and the second conductor 15 are electrically connected via the third conductor 16, and the first conductor 14, the second conductor 15, and the third conductor 16 are hard. An antenna 12 having a substantially U-shaped cross section in the thickness direction of the base material 11 is formed.

  The length in the longitudinal direction of the antenna 12, that is, from the first conductor 14 provided on one surface 11 a of the hard base 11 via the third conductor 16 to the other surface 11 b of the hard base 11. The length over the provided second conductor 15 is ½ of the frequency (300 MHz to 30 GHz) of the ultra-high frequency band <UHF>, which is the use frequency of the non-contact type data transmitter / receiver 10, and the microwave band. The length corresponds to the wavelength.

  The shape of the cross section perpendicular to the thickness direction of the hard base material 11 of the through hole 11c, that is, the shape in plan view is substantially rectangular. The shape of the cross-section of the through-hole 11c is not particularly limited, and a plurality of small through-holes having an elliptical shape, a triangular shape, a quadrangular (rectangular) shape, or a polygonal shape of a pentagon or more form a single shape. Also good. The shape formed by connecting the plurality of through-holes is a circular shape, a semicircular shape, an elliptical shape, a rectangular shape, a triangular shape, a quadrangular (rectangular) shape, a pentagonal or more polygonal shape, and a meandering curve. It may be what has made.

  Further, the size (width, length) of the through hole 11c is not particularly limited, and is appropriately adjusted according to the resonance frequency of the antenna 12.

The hard substrate 11 is made of a polyester resin such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT); made of a polyfluorinated ethylene resin such as polyvinyl fluoride, polyvinylidene fluoride, or polytetrafluoroethylene. Base material: Base material made of polyamide resin such as nylon 6, nylon 6, 6, etc .; Base material made of hard polyvinyl chloride (PVC); Base material made of polyacetal; Base material made of polycarbonate (PC); Made of polyarylate A base material; a base material made of polyimide; a base material made of fiber reinforced plastic such as a base material made of glass epoxy resin;
Among these base materials, a base material made of a glass epoxy resin is preferable because it does not deteriorate the communication characteristics of the antenna 12.

  The antenna 12, that is, the first conductor 14, the second conductor 15, and the third conductor 16 are printed on the hard substrate 11 in a predetermined pattern using polymer-type conductive ink, such as screen printing or inkjet printing. It is formed by a method, or is formed by etching a conductive foil, or is formed by metal plating.

  Examples of polymer-type conductive inks are those in which 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 blended in the resin composition 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 this 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 photocuring type, a penetrating 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, ie, a crosslinkable type or a crosslinkable / thermal A plastic combination type is preferably used.

Examples of the conductive foil forming the antenna 12 include copper foil, silver foil, gold foil, platinum foil, and aluminum foil.
Furthermore, examples of the metal plating that forms the antenna 12 include copper plating, silver plating, gold plating, and platinum plating.

  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.

  Further, the adhesive used for connecting the IC chip 13 to the first conductor 14 is not particularly limited as long as it is an adhesive generally used for bonding a wiring board or the like, but an anisotropic conductive adhesive film (Anisotropic). Conductive Film (ACF), non-conductive film (Non-Conductive Film, NCF), anisotropic conductive paste (Anisotropic Conductive Paste, ACP), non-conductive particle paste (Non Conductive Resin Paste, NCP), etc. are used.

Next, a method for manufacturing the non-contact type data receiving / transmitting body 10 will be described with an example.
First, the first conductor 14 having a predetermined shape is formed on one surface 11a of the hard base 11 by a printing method using a polymer type conductive ink, etching of a conductive foil, or metal plating.
Next, the second conductor 15 having a predetermined shape is formed on the other surface 11b of the hard base 11 by a printing method using a polymer type conductive ink, etching of the conductive foil, or metal plating.

  Next, a through hole 11c that is substantially perpendicular to the hard base material 11 is formed from one surface 11a of the hard base material 11 to the other surface 11b by punching or using a die. At this time, the hard base material 11 is perforated together with the first conductor 14 provided on the one surface 11a of the hard base material 11, but the drill or the mold that is in contact with the first conductor 14 is hard. At the same time that the through-hole 11c is drilled in the base material 11, a part of the first conductor 14 is stretched, and the stretched portion is dragged into the through-hole 11c. The conductor 16 is formed. As a result, the first conductor 14 and the second conductor 15 are connected via the third conductor 16.

  Next, the first conductor 14 and the IC chip 13 are electrically connected on one surface 11a of the hard base material 11 to obtain the non-contact type data transmitting / receiving body 10.

  According to this non-contact type data transmitting / receiving body 10, the hard base material 11, the planar first conductor 14 provided on one surface 11 a of the hard base material 11, and the other surface 11 b of the hard base material 11. The antenna is composed of a planar second conductor 15 provided on the first conductor 15 and a third conductor 16 that penetrates the hard substrate 11 in the thickness direction and connects the first conductor 14 and the second conductor 15. 12 and an IC chip 13 electrically connected to the antenna 12, and the first conductor 14 and the second conductor 15 are arranged to face each other with the hard base 11 interposed therebetween. Is provided between the two long sides 11e and 11f facing each other in the hard base material 11, and the through holes 11c are provided on the long side 11e and 11f of the hard base material 11. Is arranged obliquely with respect to the third through hole 11c. Since the electric body 16 is provided, even if an external force is applied to the non-contact type data receiving / transmitting body 10 so that the hard base material 11 bends in the longitudinal direction, it is concentrated on both ends of the through hole 11c. Therefore, the hard base material 11 can be prevented from breaking along the through hole 11c. Therefore, it is possible to prevent the third conductor 16 from being exposed due to the breakage of the hard base material 11 and damaging the connection portion between the third conductor 16 and the first conductor 14 or the second conductor 15. As the hard base material 11 is broken, the third conductor 16 provided on the inner surface 11d of the through-hole 11c is disconnected, and the non-contact type data transmitter / receiver 10 becomes unable to communicate. Can be prevented.

The antenna 12 has a planar shape, and the first conductor 14 and the second conductor 15 constituting the antenna 12 have one long side with respect to the two long sides 11e and 11f facing each other in the hard base material 11. Since the length on the 11e side is different from the length on the other long side 11f side, the broadband property can be maintained.
In addition, even if either one surface 11a or the other surface 11b of the hard base material 11 is affixed to the metal article, the antenna 12 writes information on the surface side not affixed to the metal article. / The radio wave transmitted from the reading device can be sufficiently taken in, and an electromotive force higher than the operating electromotive force of the IC chip 13 can be induced. Therefore, the non-contact type data receiving / transmitting body 10 can be directly attached to a metal article, receive information from the outside in a non-contact state, and transmit information to the outside.

  In this embodiment, the antenna 12 composed of the first conductor 14, the second conductor 15, and the third conductor 16 has a U-shaped cross section in the thickness direction of the hard base material 11. The contactless data receiving / transmitting body 10 is exemplified, but the contactless 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 first conductor and the second conductor, in which the antenna is disposed to face each other through the hard base material, penetrate the base material in the thickness direction. The cross-sectional shape in the thickness direction of the hard base material of the antenna may be a U shape, an D shape, or the like.

  Further, in this embodiment, the non-contact type data receiving / transmitting body 10 having the through holes 11c arranged obliquely with respect to the long sides 11e and 11f of the hard base material 11 is illustrated, but the non-contact type data of the present invention is illustrated. The transmission / reception body is not limited to this. In the non-contact type data transmitting / receiving body of the present invention, it is only necessary that at least a part of the through hole is arranged obliquely with respect to one side of the hard base material.

(2) Second Embodiment FIG. 2 is a schematic plan view showing a second embodiment of the contactless data receiving / transmitting body of the present invention.
2, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
The non-contact type data receiving / transmitting body 20 of this embodiment is different from the non-contact type data receiving / transmitting body 10 of the first embodiment described above in that the hard base 11 is on the one end 11A side of the hard base 11. And a through-hole 21 having a substantially V-shape in plan view extending between the two long sides 11e and 11f facing each other in the hard base material 11 is provided. Further, in the through hole 21, the V-shaped valley portion is substantially perpendicular to one end of the hard base material 11, and the V-shaped line portion (linear portion) 21 a is formed on the long side 11 e of the hard base material 11. The V-shaped line portion (linear portion) 21 b is arranged so as to be inclined with respect to the long side 11 f of the hard base material 11.

  Thus, if the through hole 21 having a substantially V shape in plan view is provided, even if the hard base material 11 breaks along one of the linear portions 21a and 21b, the other does not break. Due to the breakage of the hard base material 11, a portion where the third conductor 16 is not exposed remains. Therefore, it is possible to prevent the non-contact type data receiving / transmitting body 20 from becoming incapable of communication due to the disconnection of the third conductor 16 provided on the inner surface of the through hole 21 with the breakage of the hard base material 11. .

(3) Third Embodiment FIG. 3 is a schematic plan view showing a third embodiment of the contactless data receiving / transmitting body of the present invention.
3, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
The non-contact type data receiving / transmitting body 30 of this embodiment is different from the non-contact type data receiving / transmitting body 10 of the first embodiment described above in that the hard base 11 is on the one end portion 11A side of the hard base 11. And a through-hole 31 having a semicircular arc shape in plan view extending between the two long sides 11e and 11f facing each other in the hard base material 11 is provided.

  As described above, when the through hole 31 having a semicircular arc shape in plan view is provided, even if an external force is applied to the non-contact type data receiving / transmitting body 30 so that the hard base material 11 is bent in the longitudinal direction, the through hole is provided. Since the concentration of force on one point with respect to 31 is alleviated, the hard base material 11 can be prevented from breaking along the through hole 31. Therefore, it is possible to prevent the third conductor 16 from being exposed due to the breakage of the hard base material 11 and damaging the connection portion between the third conductor 16 and the first conductor 14 or the second conductor 15. As the hard base material 11 breaks, the third conductor 16 provided on the inner surface 11d of the through hole 11c is disconnected, and the non-contact type data transmitter / receiver 30 becomes incapable of communication. Can be prevented.

10, 20, 30 ... non-contact type data transmitting / receiving body, 11 ... hard base material, 11c, 21, 31 ... through hole, 12 ... antenna, 13 ... IC chip, 14. -1st conductor, 15 ... 2nd conductor, 16 ... 3rd conductor, 17 ... Ground.

Claims (2)

Hard substrate, planar first conductor provided on one surface of the hard substrate, planar second conductor provided on the other surface of the hard substrate, and the hard substrate An antenna comprising a third conductor that penetrates the material in the thickness direction and connects the first conductor and the second conductor, and an IC chip electrically connected to the antenna A contact-type data receiver / transmitter,
The first conductor and the second conductor are disposed to face each other with the base material interposed therebetween,
A through hole extending through the hard base material in the thickness direction and extending between two opposite sides of the hard base material is provided, and at least a part of the through hole is provided on one side of the hard base material. Arranged diagonally,
A non-contact type data receiving / transmitting body, wherein the third conductor is provided in the through hole. The non-contact type data receiving / transmitting body according to claim 1, wherein the hard base material is a base material made of glass epoxy resin.

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