JP2010152438A - Antenna component and noncontact data sender/receiver therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna component that prevents disconnection of an antenna due to an external force and achieves a noncontact data sender/receiver with excellent long-term durability, having a wide directivity for reading/writing while directly stuck to a metallic component, and covering long reading/writing distances, and to provide a noncontact data sender/receiver therewith. <P>SOLUTION: The antenna component 11 includes a low dielectric constant substrate 12, a first sheet conductor 13 provided on one side 12a of the low dielectric constant substrate 12, a second sheet conductor 14 provided on the other side 12b of the low dielectric constant substrate 12, and a third conductor 15 connecting the first conductor 13 to the second conductor 14. The first conductor 13 and the second conductor 14 face each other across the low dielectric constant substrate 12. The third conductor 15 is provided inside a through-hole 12c penetrating through the low dielectric constant substrate 12 in its thickness direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

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). With respect to antenna parts used for receiving / transmitting bodies and non-contact type data receiving / transmitting bodies having the same, in particular, they are directly attached to metal articles, receive information from the outside in a non-contact state, and receive information outside. The present invention relates to an antenna component suitable for a non-contact type data receiving / transmitting body capable of transmitting a signal and a non-contact type data receiving / transmitting body including the antenna component.

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 an electromagnetic wave from the apparatus 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 information in the IC chip is converted into a signal, and this signal is transmitted from the antenna of the IC tag. Called.
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, the electromagnetic wave transmitted from the information writing / reading device must be sufficiently taken into the antenna of the IC tag, and an electromotive force greater 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, an antenna component comprising a substrate, a front and back surface of the substrate, and an antenna having a U-shaped cross section in the thickness direction of the substrate, comprising a conductor provided along a side surface connected to the front and back surfaces of the substrate. Has been proposed (see, for example, Patent Document 1).
Even if the IC tag using the antenna component is attached to a metal article, an electromotive force higher than the operation electromotive force of the IC chip is generated, so that the IC chip is operated and information can be transmitted and received.
International Publication No. 2007/144574

  However, in the antenna component described above, a conductor that forms an antenna is provided at the boundary between the front and back surfaces and the side surface of the substrate, that is, at the corner of the substrate, and between the conductors provided on each surface at the corner of the substrate. Since the connection part is exposed to the outside of the substrate, the connection part is easily damaged by an external force, and the antenna is disconnected at that part, and the non-contact type data receiving / transmitting body using this antenna component may be unable to communicate. was there.

  The present invention has been made in view of the above circumstances, and prevents disconnection of an antenna due to external force, is excellent in long-term durability, and has directivity for reading / writing in a state of being directly attached to a metal article. It is an object of the present invention to provide an antenna component that realizes a non-contact type data receiving / transmitting body that is wide and has a long read / write distance, and a non-contact type data receiving / transmitting body including the antenna component.

  The antenna component of the present invention includes a low dielectric constant substrate, a planar first conductor provided on one surface of the low dielectric constant substrate, and a planar shape provided on the other surface of the low dielectric constant substrate. The second conductor, and a third conductor connecting the first conductor and the second conductor, wherein the first conductor and the second conductor are The third conductor is disposed in a through hole penetrating through the low dielectric constant substrate in the thickness direction.

  A non-contact type data receiving / transmitting body of the present invention includes the antenna component of the present invention and an IC chip electrically connected to the antenna component.

According to the antenna component of the present invention, a low dielectric constant substrate and an antenna composed of a first conductor, a second conductor, and a third conductor are provided, and the first conductor and the second conductor are the low dielectric constant substrate. Since the third conductor is provided in the through hole that penetrates the low dielectric constant substrate in the thickness direction, the first conductor is connected to the second conductor. Not only the three conductors themselves are not exposed to the outside of the low dielectric constant substrate, but also the connection portions of the first conductor, the second conductor, and the third conductor are exposed to the outside of the low dielectric constant substrate. Therefore, it is possible to prevent the connection portion from being damaged by an external force. Therefore, it is possible to prevent the antenna from being disconnected at that portion, to have excellent long-term durability, and to prevent the non-contact type data receiving / transmitting body using this antenna component from becoming incapable of communication.
Moreover, even if the non-contact type data receiving / transmitting body using the antenna component of the present invention is attached to a metal article, the metal article of one surface or the other surface of the low dielectric constant substrate of the antenna component is used. On the surface side not attached to the antenna, the antenna can sufficiently take in the radio wave transmitted from the information writing / reading device, and can induce an electromotive force higher than the operating electromotive force of the IC chip. Therefore, the non-contact type data receiving / transmitting body can be directly attached to a metal article, receive information from the outside in a non-contact state, and transmit information to the outside.

The best mode of the antenna component of the present invention and the non-contact type data receiving / transmitting body including the antenna component 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 view showing a first embodiment of a non-contact type data receiving / transmitting body provided with an antenna component of the present invention, (a) is a plan view, and (b). These are sectional drawings which follow the AA line of (a).
The non-contact type data receiving / transmitting body 10 of this embodiment is generally configured by an antenna component 11 and an IC chip 17.
The antenna component 11 is provided on the low dielectric constant substrate 12, the planar first conductor 13 provided on one surface 12 a of the low dielectric constant substrate 12, and the other surface 12 b of the low dielectric constant substrate 12. The planar second conductor 14 and the third conductor 15 that connects the first conductor 13 and the second conductor 14 to each other at one end thereof are roughly configured.

In the antenna component 11, the first conductor 13 is provided on one surface 12 a of the low dielectric constant substrate 12 via an adhesive or an adhesive, and the adhesive material is provided on the other surface 12 b of the low dielectric constant substrate 12. Or the 2nd conductor 14 is provided through the adhesive material.
The first conductor 13 and the second conductor 14 are arranged to face each other with the low dielectric constant substrate 12 interposed therebetween. The first conductor 13 and the second conductor 14 are in a parallel relationship.

The third conductor 15 is provided substantially perpendicular to the low dielectric constant substrate 12 in the through hole 12c penetrating the low dielectric constant substrate 12 in the thickness direction, that is, from one surface 12a to the other surface 12b. The through hole 12c is provided on the entire inner surface 12d of the through hole 12c. The through-hole 12c provided with the third conductor 15 is not filled with the third conductor 15, but has a hole extending from one surface 12a of the low dielectric constant substrate 12 to the other surface 12b. Existing.
Furthermore, the through-hole 12 c extends along the short direction of the low dielectric constant substrate 12 and at one end of the first conductor 13 and the second conductor 14. A plurality of the conductors 15 are provided at equal intervals in the short direction, and the third conductor 15 is provided in all of the through holes 12c.

  And the 3rd conductor 15 is connected with the 1st conductor 13 in the opening part by the side of one surface 12a of the low dielectric constant board | substrate 12 in the through-hole 12c, On the other hand, the low dielectric constant board | substrate 12 in the through-hole 12c The second conductor 14 is connected to the opening on the other surface 12b side. As a result, the first conductor 13 and the second conductor 14 are electrically connected via the third conductor 15, and the first conductor 13, the second conductor 14, and the third conductor 15 are An antenna 16 having a U-shaped cross section in the thickness direction of the dielectric constant substrate 12 is formed.

  The length in the longitudinal direction of the antenna 16, that is, the second conductor provided on the other surface 12b from the first conductor 13 provided on the one surface 12a of the low dielectric constant substrate 12 via the third conductor 15. The length over the conductor 14 is a length corresponding to a half wavelength of the frequency (300 MHz to 30 GHz) of the ultra-high frequency band <UHF> or the microwave band that is the use frequency of the non-contact type data receiving / transmitting body 10. It has become.

The shape of the cross section of the through hole 12c perpendicular to the thickness direction of the low dielectric constant substrate 12, that is, the shape in plan view, is circular. The shape of the cross section of the through hole 12c is not particularly limited, and may be an ellipse, a triangle, a quadrangle (rectangle), a pentagon or more polygon.
The size and number of the through holes 12c are not particularly limited, and are appropriately adjusted according to the resonance frequency of the antenna 16 and the like.

  The IC chip 17 is connected to the first conductor 13 on one surface 12 a of the low dielectric constant substrate 12. Thereby, the antenna component 11 and the IC chip 17 are electrically connected.

  As the low dielectric constant substrate 12, a glass epoxy substrate is used which is formed by impregnating an epoxy resin into a laminate of nonwoven fabrics made of glass fibers and press-molding.

  The 1st conductor 13, the 2nd conductor 14, and the 3rd conductor 15 consist of metal thin films, and gold, silver, copper, tin, aluminum etc. are mentioned as a metal which forms this metal thin film.

  The IC chip 17 is not particularly limited and may be a non-contact IC tag, a non-contact 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 16. Anything applicable to RFID media such as an IC card can be 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 13 is disposed on one surface 12a of the low dielectric constant substrate 12 via an adhesive or an adhesive.
Next, the second conductor 14 is disposed on the other surface 12b of the low dielectric constant substrate 12 via an adhesive or an adhesive.

  Next, a through hole 12c that is substantially perpendicular to the low dielectric constant substrate 12 is drilled from one surface 12a of the low dielectric constant substrate 12 to the other surface 12b by a drill. At this time, the low dielectric constant substrate 12 is perforated together with the first conductor 13 provided on the one surface 12a of the low dielectric constant substrate 12, but the drill in contact with the first conductor 13 is low dielectric constant. The through hole 12c is drilled in the rate substrate 12, and at the same time, a portion of the first conductor 13 is stretched, and the stretched portion is dragged into the through hole 12c, so that the third conductive is applied to the entire inner surface 12d of the through hole 12c. Form body 15. As a result, the first conductor 13 and the second conductor 14 are connected via the third conductor 15.

  Next, on one surface 12a of the low dielectric constant substrate 12, the first conductor 13 and the IC chip 17 are connected to obtain the non-contact type data receiving / transmitting body 10.

According to this non-contact type data transmitting / receiving body 10, the antenna component 11 includes the low dielectric constant substrate 12 and the antenna 16 including the first conductor 13, the second conductor 14, and the third conductor 15. The one conductor 13 and the second conductor 14 are arranged to face each other with the low dielectric constant substrate 12 interposed therebetween, and the third conductor 15 is disposed in the through hole 12c that penetrates the low dielectric constant substrate 12 in the thickness direction. The third conductor 15 itself connecting the first conductor 13 and the second conductor 14 is not exposed to the outside of the low dielectric constant substrate 12 because the inner surface 12d is provided over the entire inner surface 12d. Since the connection portion between the first conductor 13 and the second conductor 14 and the third conductor 15 is not exposed to the outside of the low dielectric constant substrate 12, the connection portion can be prevented from being damaged by an external force. Therefore, it is possible to prevent the antenna 16 from being disconnected at that portion, to have excellent long-term durability, and to prevent the non-contact type data receiving / transmitting body 10 from becoming unable to communicate.
In addition, even if either one surface 12a or the other surface 12b of the low dielectric constant substrate 12 is affixed to a metal article, the antenna 16 is connected to the information document on the surface side not affixed to the metal article. The radio wave transmitted from the reading / reading device can be sufficiently taken in and an electromotive force higher than the operating electromotive force of the IC chip 17 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 16 composed of the first conductor 13, the second conductor 14, and the third conductor 15 has a U-shaped cross section in the thickness direction of the low dielectric constant substrate 12. However, the antenna component of the present invention is not limited to this. In the antenna component according to the present invention, the antenna includes a first conductor and a second conductor, which are arranged to face each other with a low dielectric constant substrate interposed therebetween, penetrating the low dielectric constant substrate in the thickness direction. The cross-sectional shape in the thickness direction of the low dielectric constant substrate of the antenna may be a U shape, an E shape, or the like as long as it is connected through the third conductor.

(2) Second Embodiment FIG. 2 is a schematic view showing a second embodiment of the non-contact type data receiving / transmitting body provided with the antenna component of the present invention, (a) is a plan view, (b). These are sectional drawings which follow the BB line of (a).
The non-contact type data receiving / transmitting body 20 of this embodiment is generally configured by an antenna component 21 and an IC chip 27.
The antenna component 21 is provided on the low dielectric constant substrate 22, the planar first conductor 23 provided on one surface 22 a of the low dielectric constant substrate 22, and the other surface 22 b of the low dielectric constant substrate 22. The planar second conductor 24 and the third conductor 25 connecting the first conductor 23 and the second conductor 24 are roughly configured.

In the antenna component 21, the first conductor 23 is provided on one surface 22 a of the low dielectric constant substrate 22 via an adhesive or an adhesive, and the adhesive material is provided on the other surface 22 b of the low dielectric constant substrate 22. Or the 2nd conductor 24 is provided through the adhesive material.
The first conductor 23 and the second conductor 24 are arranged to face each other with the low dielectric constant substrate 22 interposed therebetween. The first conductor 23 and the second conductor 24 are in a parallel relationship.

The third conductor 25 is provided in the through-hole 22c penetrating the low dielectric constant substrate 22 in the thickness direction, that is, substantially perpendicular to the low dielectric constant substrate 22 from one surface 22a to the other surface 22b. In the through hole 22c having a substantially rectangular shape in plan view, the entire inner surface 22d of the through hole 22c is provided. The through hole 22c provided with the third conductor 25 is not filled with the third conductor 25, but has a hole extending from one surface 22a of the low dielectric constant substrate 22 to the other surface 22b. Existing.
Further, the through-hole 22 c extends along the short direction of the low dielectric constant substrate 22 and at one end of the first conductor 23 and the second conductor 24. The third conductor 25 is provided in the through hole 22c.

  And the 3rd conductor 25 is connected with the 1st conductor 23 in the opening part by the side of one surface 22a of the low dielectric constant board | substrate 22 in the through-hole 22c, on the other hand, the low dielectric constant board | substrate 22 in the through-hole 22c The second conductor 24 is connected to the opening on the other surface 22b side. Thus, the first conductor 23 and the second conductor 24 are electrically connected via the third conductor 25, and the first conductor 23, the second conductor 24, and the third conductor 25 are An antenna 26 having a U-shaped cross section in the thickness direction of the dielectric constant substrate 22 is formed.

  The length of the antenna 26 in the longitudinal direction, that is, the second conductor provided on the other surface 22b from the first conductor 23 provided on one surface 22a of the low dielectric constant substrate 22 via the third conductor 25. The length over the conductor 24 is a length corresponding to a half wavelength of the frequency (300 MHz to 30 GHz) of the ultra-high frequency band <UHF> or the microwave band that is the use frequency of the non-contact type data transmitting / receiving body 20. It has become.

The shape of the cross section of the through hole 22c perpendicular to the thickness direction of the low dielectric constant substrate 22, that is, the shape in plan view is not particularly limited, and may be a circle, an ellipse, a triangle, a quadrangle, a pentagon or more polygon. Good.
The size of the through hole 22c is not particularly limited, and is appropriately adjusted according to the resonance frequency of the antenna 26 and the like.

  The IC chip 27 is connected to the first conductor 23 on one surface 22 a of the low dielectric constant substrate 22. Thereby, the antenna component 21 and the IC chip 27 are electrically connected.

As the low dielectric constant substrate 22, the same one as in the first embodiment described above is used.
As the 1st conductor 23, the 2nd conductor 24, and the 3rd conductor 15, the thing similar to the above-mentioned 1st embodiment is used.
As the IC chip 27, the same one as in the first embodiment described above is used.

  Further, the non-contact type data receiving / transmitting body 20 can be manufactured in the same manner as in the first embodiment.

  This non-contact type data receiving / transmitting body 20 has the same effect as the non-contact type data receiving / transmitting body 10 described above.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows 1st embodiment of the non-contact-type data transmission / reception body provided with the antenna component of this invention, (a) is a top view, (b) is the cross section which follows the AA line of (a). FIG. It is the schematic which shows 2nd embodiment of the non-contact-type data transmission / reception body provided with the antenna component of this invention, (a) is a top view, (b) is the cross section which follows the BB line of (a). FIG.

Explanation of symbols

10, 20 ... Non-contact type data transmitting / receiving body, 11, 21 ... Antenna components, 12, 22 ... Low dielectric constant substrate, 13, 23 ... First conductor, 14, 24 ... Second conductor, 15, 25 ... third conductor, 16, 26 ... antenna, 17, 27 ... IC chip.

Claims (2)

A low dielectric constant substrate, a planar first conductor provided on one surface of the low dielectric constant substrate, a planar second conductor provided on the other surface of the low dielectric constant substrate, An antenna component comprising: the first conductor and a third conductor connecting the second conductor;
The first conductor and the second conductor are disposed to face each other with the low dielectric constant substrate interposed therebetween,
The antenna component according to claim 1, wherein the third conductor is provided in a through hole that penetrates the low dielectric constant substrate in a thickness direction. A non-contact type data receiving / transmitting body comprising the antenna component according to claim 1 and an IC chip electrically connected to the antenna component.

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