JP4839828B2 - Non-contact data carrier device for metal - Google Patents

Description

  The present invention relates to a metal-compatible non-contact type data carrier device, and more particularly, to a metal-compatible non-contact type data carrier device using a small non-contact type data carrier inlet portion having a size of 10 mm × 10 mm or less.

In recent years, IC cards are becoming increasingly popular in terms of information confidentiality, and in recent years, contactless IC cards that exchange information without contacting a reader / writer have been proposed. A system in which signal exchange with an apparatus or signal exchange and power supply is performed by electromagnetic waves is being put into practical use.
Under such circumstances, various types of non-contact IC tags in the form of sheets or bills, in which an IC chip carrying data is connected to an antenna coil, have recently been proposed and attached to products, packaging boxes, etc. for shoplifting. It has come to be used for prevention, logistics system, product management, etc.
Of course, a simple resonance tag having no IC is also used to detect the presence of an article.

In the case of such a non-contact type IC tag, there is a form that is attached to the metal surface of the article, but in this case, in the signal exchange with the external read / write device, the magnetic flux is a metal attached to the IC tag. In some cases, the magnetic flux across the antenna coil decreases and the induced electromotive force decreases, causing the IC chip operation to fail.
In order to cope with this, an antenna coil is wound around a ferrite core and arranged so that the axis of the antenna coil is parallel to the direction of the magnetic flux on the metal surface of the article, and the magnetic flux passing through the antenna coil surface is increased. A method for increasing the induced electromotive force has been proposed in Japanese Patent Laid-Open No. 2003-317052 (Patent Document 1).
In the case of this method, when the diameter of the antenna coil is increased in order to increase the magnetic flux passing through the antenna coil, there is a problem that the thickness of the IC tag itself increases.
For this reason, as a method of not increasing the thickness of the IC tag itself, in Japanese Patent Laid-Open No. 2005-310054 (Patent Document 2), in order to cover the antenna coil and the IC chip, in order on the metal surface side of the attached article, An IC tag (herein referred to as an IC label) having a configuration in which a magnetic layer, a first adhesive layer, a second substrate, a second adhesive layer, and a release paper are disposed is proposed.
In addition, a manufacturing method thereof is also proposed.
JP 2003-317052 A JP, 2005-310054, A In such a form used along with the metal surface of an article, an IC that can be used with little or no influence of the metal surface of the article. A non-contact type data carrier using a tag is referred to as a metal-compatible non-contact type data carrier or a metal-compatible non-contact type data carrier device, but this is also simply referred to as a metal-compatible IC tag. There is also.

On the other hand, when producing a metal-compatible tag using an IC tag manufactured in a roll shape, a mass production efficiency is improved by combining a soft magnetic material and an IC tag. It is known that it can be manufactured.
However, when the size of the IC tag is reduced to a size of 10 mm × 10 mm or less, it is possible to attach a soft magnetic material during the manufacturing process, but the IC tag cannot be separated in that state.
It is also possible to prepare a small IC tag and a soft magnetic material in pieces and use them together, but depending on the accuracy of the attachment, the characteristics may change slightly or the appearance will deteriorate. There's a problem.
Japanese Patent Application Laid-Open No. 11-216627 (Patent Document 3) discloses a structure in which an IC tag portion is placed on a ferromagnetic material made of ferrite and covered with a plastic case, and the ferromagnetic material side is a metal surface of an article (automobile). An IC tag (herein referred to as an ID tag) is used in a form attached to the above.
Japanese Unexamined Patent Publication No. 2000-34726 (Patent Document 4) describes an ID tag having an antenna coil wound around a ferromagnetic material.
JP-A-11-216627 JP 2000-34726 A

As described above, various types of non-contact type data carrier devices for metal have been proposed in recent years, and various methods for producing the same have been disclosed. However, the size of the non-contact type data carrier inlet used is 10 mm. When the size was reduced to a size of × 10 mm or less, it was impossible to attach the soft magnetic material during the manufacturing process and to separate the non-contact type data carrier inlet portion in that state.
This invention respond | corresponds to this, When the magnitude | size of a non-contact-type data carrier inlet part becomes a small size of the size of 10 mm x 10 mm or less, the non-contact for metal corresponding using this non-contact-type data carrier inlet part A data carrier device of the formula is to be provided.

The metal-compatible non-contact type data carrier device of the present invention is a metal-compatible non-contact type data carrier device, which is a non-contact type data carrier inlet portion having an antenna circuit portion and an IC chip on a substrate, and the non-contact type so as to surround the one side and the side of the formula data carrier inlet portion, for holding the non-contact data carrier inlet section, Ri Contact and a ferromagnetic body, the ferromagnetic part, the non-contact data A holding portion for holding the one surface side of the carrier inlet portion apart from the ferromagnetic body portion is provided, and the outer peripheral portion of the non-contact type data carrier inlet portion and an antenna are provided on the ferromagnetic body portion. The outside of the circuit is fitted, and a fitting portion is provided to hold the non-contact type data carrier inlet portion, which is used as a holding portion, and the fitting portion is an object of the ferromagnetic body portion. The side surface, which has a slit-shaped recess, the front and rear ends of the non-contact data carrier inlet section, it toward its sides, are arranged metal layer that is not connected to the circuit electrically It is characterized by.
In other words, in the non-contact type data carrier device corresponding to the metal described above, the ferromagnetic part is a ferrite .
And also a non-contact data carrier device of any metal corresponding upper SL, the ferromagnetic body, and is characterized in that is provided with a holding portion for holding a metal object.
Also, a non-contact data carrier device of any metal corresponding upper SL, the ferromagnetic material is on one side of the antenna circuit portion of the non-contact data carrier inlet portion and the non-contact data carrier inlet section The distance to the part is 1 mm or more.
Further, in any one of the metal-compatible non-contact type data carrier devices, the non-contact type data carrier inlet portion is a small size of 10 mm × 10 mm or less.
Note that the non-contact type data carrier inlet portion referred to here is a general term for parts having an antenna circuit portion and an IC chip on a base material, and may be simply called a non-contact type data carrier.
Here, the IC tag is also called a non-contact type data carrier or a non-contact type data carrier inlet.
And, in the form used along with the metal surface of the article, non-contact using the non-contact type data carrier inlet part which enables its use without being affected by the metal surface of the article at all or almost. Here, the metal-compatible data carrier is referred to as a metal-compatible non-contact data carrier device.

(Function)
The metal-compatible non-contact type data carrier device according to the present invention has such a configuration, so that the size of the non-contact type data carrier inlet portion can be reduced to a size of 10 mm × 10 mm or less. It is possible to provide a non-contact type data carrier device.
Specifically, a non-contact type data carrier inlet part having an antenna circuit part and an IC chip on a base material, and the non-contact type data carrier inlet part so as to surround one surface and a side surface of the non-contact type data carrier inlet part. holding the parts, Ri Contact and a ferromagnetic body, the holding of the ferromagnetic body, the one surface side of the non-contact data carrier inlet section and holds apart from the ferromagnetic body The outer periphery of the non-contact type data carrier inlet part and the outside of the antenna circuit are provided in the ferromagnetic part, and a fitting part for holding the non-contact type data carrier inlet part is provided. This is a holding part, and the fitting part is provided with a slit-like concave part on the article side surface of the ferromagnetic part, and the non-contact type data carrier inlet. Front and rear end parts, toward the side surface thereof, by being arranged metal layer that is not connected to the circuit and electrically, have achieved this.
This makes it possible to manufacture a metal-compatible non-contact type data carrier device without worrying about the positional accuracy of the magnetic body and the non-contact type data carrier inlet portion.
Since the non-contact type data carrier inlet part can be easily attached simply by dropping it into the magnetic part, the appearance as a product is improved.
Specifically, when attached, the non-contact type data carrier inlet portion has a shape that can be easily attached to a small non-contact type data carrier inlet portion so as to surround one side and both side surfaces. By preparing the magnetic body, a metal-compatible data carrier can be manufactured without worrying about the positional accuracy of the magnetic body and the non-contact data carrier inlet portion. As a method for producing such a ferromagnetic part, there are a molding method, a cutting method, and other methods, but the molding method is particularly preferable in terms of mass productivity.
For example, when a non-contact type data carrier device (also referred to as a metal-compatible tag) using a small IC tag having a size of 10 mm × 10 mm or less as a non-contact type data carrier inlet is used as an IC. There is basically a problem that the tag is too small to be processed easily, but even in this case, the non-contact type data carrier inlet portion is used so as to surround one side and both side surfaces of the non-contact type data carrier inlet portion. In addition, by preparing the ferromagnetic part in a shape that allows a small tag to be easily attached, a metal-compatible tag can be produced without worrying about the positional accuracy of the magnetic substance and the IC tag.
The material of the ferromagnetic part is ferrite. By adopting the form of the invention of claim 2, the ferromagnetic part can be easily fabricated.
In particular, in the case of a ferrite type magnetic body, it is possible to easily produce a shape size suitable for a small tag having a size of 10 mm × 10 mm or less.
As the ferromagnetic part, there is also a form in which the one surface side of the non-contact type data carrier inlet part is provided with a spacer if necessary and fixed and held by an adhesive layer. In this embodiment, the magnetic body part is provided with a holding part that holds the one surface side of the non-contact data carrier inlet part away from the ferromagnetic part .
The present invention relates to ferromagnetic properties the body, the outer peripheral portion of the non-contact data carrier inlet portion is fitted to the outer antenna circuit, provided with a fitting portion for holding the non-contact data carrier inlet section, this As the holding portion, the one surface of the non-contact type data carrier inlet portion can be fixed at a desired distance from the surface of the ferromagnetic material, and a metal-compatible tag can be produced without an adhesive.
The present invention, as the fitting portion, the article side surface of the ferromagnetic body is provided with a slit-shaped recess.
Moreover, in the present invention, the form of the invention of claim 3 in which a holding part for holding a metal object is provided in the ferromagnetic part.
In addition , the present invention has a configuration in which a metal layer that is not electrically connected to the circuit is disposed on the front and back end portions and the side surfaces of the non-contact type data carrier inlet portion , so that the slit-like concave portion is provided. When the outer peripheral portion of the non-contact type data carrier inlet portion and the outside of the antenna circuit are fitted so as to be sandwiched, it is possible to cope with wear.
In particular, it is effective when the non-contact type data carrier inlet is a small size of 10 mm × 10 mm or less.

  As described above, the present invention can provide a metal-compatible non-contact type data carrier device particularly when the size of the non-contact type data carrier inlet portion is reduced to a size of 10 mm × 10 mm or less. It was.

Embodiments of the present invention will be described with reference to the drawings.
In the first embodiment 1 a cross-sectional view of a reference embodiment of FIG. 1 (a) non-contact data carrier device of metals corresponding according to the present onset bright, FIG. 1 (b) non-contact shown in FIG. 1 (a) FIG. 2 is a cross-sectional view showing a state where the data carrier device is attached to the metal surface of the article, and FIG. 2 is a diagram showing a modification of the non-contact data carrier device of the first example of the reference embodiment shown in FIG. FIG. 3 is a perspective view of the IC chip and its connection state seen from one surface of the non-contact type data carrier inlet portion, and FIG. 4 is a simplified view of the cross section taken along line A1-A2 of FIG. (A) is 1 sectional drawing of the 2nd example of the reference embodiment of the non-contact-type data carrier apparatus corresponding to the metal concerning this invention , FIG.5 (b) is sectional drawing which showed the ferromagnetic part, FIG. 5 (c) shows a state where the non-contact type data carrier device shown in FIG. 5 (a) is attached to the metal surface of the article. FIG. 6 is a schematic view showing a measurement method when measuring the communication distance and resonance frequency using the space thickness as a parameter, and FIG. 7A shows the relationship between the space thickness and the communication distance. FIG. 7B is a graph showing the relationship between the space thickness and the resonance frequency, and FIG. 8A is a second example of the reference embodiment shown in FIG. 5A. FIG. 8B is a cross-sectional view of the third embodiment of the reference embodiment, which is a modification of the metal-compatible non-contact type data carrier device, FIG. in diagram showing another example of the contact type data carrier inlet portion, FIG. 10 (a) is in the first-sectional view of a fourth example of the reference embodiment of the non-contact data carrier device of the metal corresponding according to the present invention, FIG. 10B is a diagram of the ferromagnetic body portion seen through from the D0 side in FIG.
3 is a view as seen from the B1 side in FIG.
FIG. 10A is a cross-sectional view taken along D1-D2-D3-D4-D5-D6 in FIG. 10B. In FIG. 10B, the thin dotted line indicates the non-contact type data carrier inlet. Indicates the area.
1 to 6, 8, and 9, 10, 10 </ b> A to 10 </ b> D are metal-compatible non-contact data carrier devices (also simply referred to as data carrier devices), 11 is a non-contact data carrier inlet, and 12 is strong. Magnetic body part, 12a is a side wall part, 12b is a support part, 12b1 to 12b5 are projecting support parts, 12c is a concave part (also called a space part), 12d is a slit, 12e is a concave part (also called a space part), 12f is a slit, 12S1 to 12S5 are surface portions, 13, 13a and 13b are adhesive layers, 14 are spacers, 20 to 22 are articles (made of metal), 30 and 31 are adhesive layers, 41 is an IC chip, and 42 is an antenna circuit portion (antenna coil). 43a and 43b are chip terminals, 45 and 45a to 46d are through-hole portions, 46a and 46b are chip connection terminals, 47 is a chip mounting pad, 48 Bonding wire, 49 is a sealing resin, 50 is a solder resist, 51 is a substrate (for wiring), 52 is an adhesive layer, 60 is a laminated wiring substrate, 110 is a non-contact data carrier inlet, 120 is a spacer, 130 is a magnetic layer, 140 is a metal plate part, 200 is a non-contact data carrier inlet part, 210 is an IC chip, 230 is a base material, 235 is an antenna circuit part, 240 is a solder resist, 250 is a metal part, 260 is a metal part It is a laminated wiring substrate.

First, a first example of a reference embodiment of a metal-compatible non-contact data carrier device according to the present invention will be described with reference to FIG.
The non-contact type data carrier device 10 corresponding to a metal of the first example of the reference embodiment is a non-contact type corresponding to a metal set so that the resonance frequency is preferably 13.56 MHz when used on the metal surface of the article 20. A non-contact type data carrier inlet portion 11 having an antenna circuit portion 42 and an IC chip 41 on a laminated wiring substrate 60 having a sheet-like shape as shown in FIG. From the molded ferrite that holds the non-contact type data carrier inlet portion so as to surround the one side and the side surface of the non-contact type data carrier inlet when it is attached to the article 20 As shown in FIG. 1 (a), the ferromagnetic part 12 is provided on one surface of the non-contact type data carrier inlet part 11. It is held fixed to the support portion 12b by the adhesive layer 13.
Here, the non-contact type data carrier inlet portion 11 is fitted into the concave portion (space portion) 12c formed by the ferromagnetic portion 12 side wall portion 12a and the support portion 12b.
The side wall portion 12 a has a shape that follows the outer shape of the non-contact data carrier inlet portion 11. And as shown in FIG.1 (b), it attaches to the article | item 20 and is used.
In this example, in particular, a small non-contact type data carrier inlet part 11 having a size of 10 mm square or less is used, but the positions of the ferromagnetic part 12 and the non-contact type data carrier inlet part 11 are used. A metal-compatible non-contact data carrier device can be manufactured without worrying about accuracy.

Here, a ferromagnetic part made of ferrite with good formability is used as the ferromagnetic part 12, but the material is not limited to this as long as it is a ferromagnetic substance, but a soft magnetic substance is preferably used.
In this example, the ferromagnetic part 12 produced by molding is used, but it may be produced by cutting.

As the small non-contact type data carrier inlet portion 11 having a size of 10 mm square or less, for example, a structure in which an antenna circuit portion 42 and an IC chip 41 are connected as shown in FIGS. 3 and 4 is applied. it can.
As shown in FIG. 4, the non-contact data carrier inlet portion 11 is simply a laminated wiring substrate 60 in which a substrate in which a part of the antenna circuit portion is formed is laminated on the surface of each substrate 51. Each layer is electrically connected through the through hole 45 provided in the antenna circuit portion, the IC chip 41 is mounted on the surface portion of the laminated wiring substrate 60, and The antenna circuit unit 42 is electrically connected.
Here, the non-contact type data carrier inlet portion 11 as a whole has rigidity and can maintain a planar shape.
Here, the antenna circuit unit 42 has a four-layer spiral shape in which the number of turns of each layer is about nine. Examples of the size of the non-contact type data carrier inlet portion 11 include a size of about 5 mm square and a thickness of about 150 μm.
This size is much smaller than 54 mm × 85.6 mm which is a standard size for a card-type RFID tag (IC card).
The surface IC chip 41, bonding wire 48, and antenna circuit portion 42 are covered and protected by a solder resist 50 and a sealing resin 49.
The antenna coil of the antenna circuit section 42 has a line width of about 80 μm, a line width of about 70 μm, and a line thickness of about 18 μm, and can be formed in such a laminated structure by a known additive method or semi-additive method.
The IC chip 41 is mainly composed of a ROM, a RAM, a logic circuit, and a CPU. As the IC chip 41, a chip that is commercially available as a chip for a 13.56 MHz band RFID tag, such as an I-CODE SLI chip of Phillips, a my-d chip of Infineon Technology, or the like is appropriately selected according to the application. Use.
In this example, the size of the non-contact type data carrier unit 11 is not so large with respect to the size of the IC chip 41 to be mounted.
The shape does not necessarily have to be a square, but is rectangular in order to facilitate the production of multiple pieces.
In addition, by making the laminated wiring substrate 60 laminated into a substantially square shape, it becomes easy to secure the inner area of the antenna while reducing the size, and the inductance value of the coil can be improved.
The laminated wiring substrate 60 is, for example, a single-sided copper-clad substrate in which each layer is an insulating substrate having a thickness of 0.1 mm as a base 51 and a copper foil having a thickness of 18 μm is laminated on one side or both sides. Using a copper-clad substrate, the antenna circuit part 42 having a desired shape is formed by etching using a photoetching method for the outer layer and the inner layer, and each layer is heated and pressed through an insulating adhesive layer for lamination. Further, a through hole is formed and manufactured.
Here, through-holes are used for connection between layers, but it is also possible to apply an interlayer connection method called B2it (registered trademark) that breaks through the interlayer insulation layer with a substantially conical conductor bump. It is.
Thereby, it is possible to reduce the total number of manufacturing steps.

As a modified example of the metal-compatible non-contact type data carrier device 10 of the first example of the reference embodiment, in the first example of the reference embodiment shown in FIG. There is a non-contact type data carrier device 10A corresponding to metal in a form in which a spacer 14 is disposed and fixed and held on the support portion 12b of the ferromagnetic portion by the adhesives 13a and 13b.
In the noncontact data carrier device 10A corresponding to metal in this form, the communication distance characteristic and resonance frequency characteristic by a reader / writer (not shown) can be changed by changing the thickness of the spacer 14, The body part 12 is made versatile. As the spacer 14, a single layer or a plurality of layers of an insulating resin film or the like is used. Other parts are the same as those in the first example of the reference embodiment , and a description thereof will be omitted.

Next, a second example of the reference embodiment of the metal-compatible non-contact data carrier device according to the present invention will be briefly described with reference to FIG.
Similarly to the first example of the reference embodiment , the metal-compatible non-contact data carrier device 10B of the second example of the reference embodiment has a resonance communication frequency of 13 which is suitable for use when attached to the metal surface of the article 21. A non-contact type data carrier device corresponding to a metal set to 56 MHz, and an antenna circuit unit 42, an IC chip 41, and a sheet-shaped laminated wiring substrate 60 whose cross section is shown in FIG. The non-contact type data carrier inlet 11 and the non-contact type data carrier inlet when used on an article 21 made of metal so as to surround one side and a side of the article side of the non-contact type data carrier inlet. And a ferromagnetic portion 12 formed in a shape for holding the portion 11. In particular, the ferromagnetic portion 12 has a slit-like recess on the side surface side of the article. A non-contact type data carrier, which is provided as a fitting part for fitting the outer periphery of the non-contact type data carrier inlet part and the outside of the antenna circuit and holding the non-contact type data carrier inlet part. The inlet part 11 is held.
Then, as shown in FIG. 5 (c), when used by being attached to an article 21 made of metal, it is bonded and fixed to the metal article 21 via an adhesive layer 31.
Incidentally, the cross section of the single ferromagnetic member 12 corresponding to FIG. 5A is as shown in FIG. 5B, but at least one side of the ferromagnetic member 12 has a non-contact data carrier inlet 11. A notch (not shown) is provided so that can be inserted.
The non-contact type data carrier device 10B of the second example of the reference embodiment can fix the non-contact type data carrier inlet portion 11 at a desired distance from the surface of the ferromagnetic body portion 12 by determining the position of the slit 12d. As in the first example, a non-contact type data carrier device corresponding to metal can be manufactured without using an adhesive layer (13 in FIG. 1A).
About each part, it is equivalent to the 1st example of reference embodiment , and abbreviate | omits description here.

Next, a third example of the reference embodiment of the metal-compatible non-contact data carrier device according to the present invention will be briefly described with reference to FIG.
As shown in FIG. 8A , the third example of the reference embodiment is an article integrated with the magnetic body 12 in the metal-compatible non-contact data carrier device 10B of the second example of the reference embodiment. The fitting part (the recessed part 12e of FIG.8 (b), the slit 12f) is provided, and the article | article 22 which consists of metal is fitted to this fitting part, and the outer peripheral part is fitted and hold | maintained.
FIG. 8B shows only the magnetic body portion 12 corresponding to FIG.
The third example of the reference embodiment can fix the article 22 made of metal and the non-contact type data carrier inlet portion 11 at a desired distance.
Of course, as in the first example of the reference embodiment , a metal-compatible non-contact data carrier device can be manufactured without using an adhesive layer such as an adhesive layer (13 in FIG. 1A).

Here, the communication distance characteristic and the frequency characteristic will be briefly described.
A communication distance characteristic and a resonance frequency characteristic of the non-contact type data carrier inlet unit 11 when a normal 13.56 MHz band and 10 mW reader / writer are used will be described.
As shown in FIG. 6, the distance L0 between the non-contact type data carrier inlet portion 110 and the reader / writer 150 was changed by changing the thickness of the spacer 120, and the communication distance characteristic and the frequency characteristic were examined. As a result, graphs as shown in FIGS. 7A and 7B were obtained.
Note that L0 is a communication distance, and the antenna circuit portion of the non-contact type data carrier inlet portion 110 is on the spacer 120 side.
Accordingly, the non-contact type data carrier inlet portion 110 is attached to the metal article 140 via the magnetic layers (130 in FIG. 6) having thicknesses of 0.5 mm, 0.7 mm, and 1.0 mm, respectively. When used, it can be seen that the thickness of the spacer 120 needs to be 1 mm or more in order to improve the characteristics of the non-contact data carrier inlet portion such as the communication distance characteristic and the resonance frequency characteristic.
That is, separating the distance between the antenna circuit portion of the non-contact type data carrier inlet portion 110 and the magnetic layer 130 on the one surface side of the non-contact type data carrier inlet portion by 1 mm or more is both a communication distance characteristic and a frequency characteristic. It turns out that it is effective.
From this result, in the first example of the reference embodiment, the modification of the first example of the reference embodiment, the second example of the reference embodiment, and the third example of the reference embodiment , the metal can be used when attached to an article. Therefore, the position of the antenna circuit portion of the non-contact type data carrier inlet portion is set to 1 mm or more from the ferromagnetic layer.

Next, a fourth example of the reference embodiment of the metal-compatible non-contact data carrier device according to the present invention will be briefly described with reference to FIG.
As shown in FIG. 10A , the fourth example of the reference embodiment is similar to the first example of the reference embodiment in that the antenna circuit part (42 in FIG. 3) region approaches and contacts the ferromagnetic part 12. In order to avoid this, the non-contact type data carrier inlet part 11 is supported by the protrusion support parts 12b1 to 12b5 of the ferromagnetic part at the four corners and the center of the non-contact type data carrier inlet part 11.
By adopting such a structure, the influence on the non-contact type data carrier inlet portion of the ferromagnetic portion 12 can be reduced as much as possible, and the resonance frequency characteristic can be improved.
Compared to the first example of the reference embodiment , the support 12b of the ferromagnetic body 12 is substantially separated from the antenna coil of the non-contact type data carrier inlet portion 11 as compared to the first example of the reference embodiment. The change in the resonance frequency can be reduced.
From FIG. 7B, in FIG. 6, a metal-compatible non-contact type is provided on the magnetic layer 130 without inserting the spacer 120 between the non-contact type data carrier inlet portion 110 and the magnetic layer 130. It can be seen that when the data carrier inlet portion 110 is placed, the resonance frequency is greatly reduced.
Here, in the ferromagnetic part, the protruding support part is not limited to the four corners and the center, but is provided with a pedestal that can hold only the center, only the four corners, or the non-contact type data carrier inlet part. In this way, the ferromagnetic part may be easily formed.
Moreover, the form which provided the protrusion support part in the whole peripheral part of the non-contact-type data carrier inlet part is also mentioned.
Other than that, each part is the same as the first example of the reference embodiment , and a description thereof will be omitted.

In the second example of the reference embodiment and the third example of the reference embodiment, the front and back edges and the side surfaces of the laminated wiring substrate (corresponding to 60 in FIG. 4) of the non-contact data carrier inlet 11 are shown in FIG. as shown in, the form in which arranged metal layer 250 that is not connected to the circuit electrically can ani gel as the present invention.
In the case of this form, when the non-contact type data carrier inlet portion is fitted into the slit (corresponding to 12d in FIG. 5 and 12f in FIG. 8) in the second example of the reference embodiment and the third example of the reference embodiment . In addition, there is no damage due to wear.
Further, the present invention is not limited Jowa the non-contact data carrier inlet portion described above.
Here, the ferromagnetic part 12 produced by molding is used, but a part produced by cutting may be used.

FIG. 1A is a cross-sectional view of a first example of a reference embodiment of a metal-compatible non-contact type data carrier device according to the present invention, and FIG. 1B is a non-contact type data shown in FIG. It is sectional drawing which showed the state which affixed the carrier apparatus on the metal surface of articles | goods. FIG. 2 is a diagram showing a modification of the non-contact type data carrier device of the first example of the reference embodiment shown in FIG. It is the figure which looked through and showed the IC chip and its connection state from one surface of the non-contact-type data carrier inlet part. It is the figure which simplified and showed the cross section in A1-A2 of FIG. FIG. 5 (a) is a cross-sectional view of a second example of a reference embodiment of a metal-compatible non-contact data carrier device according to the present invention, and FIG. 5 (b) is a cross-sectional view showing its ferromagnetic part. FIG. 5C is a cross-sectional view showing a state where the non-contact type data carrier device shown in FIG. 5A is attached to the metal surface of the article. It is the schematic which showed the measuring method at the time of measuring a communication distance and a resonant frequency by using the thickness of space as a parameter. FIG. 7A is a graph showing the relationship between the space thickness and the communication distance, and FIG. 7B is a graph showing the relationship between the space thickness and the resonance frequency. 8 (a) is in the third example 1 cross-sectional view of the reference embodiment is a modification of the non-contact data carrier device of the metal corresponding to the second example of the reference embodiment shown in FIG. 5 (a), FIG. 8 (B) is a sectional view showing the ferromagnetic part. It is the figure which showed another example of the non-contact-type data carrier inlet part. 10 (a) is in the first-sectional view of a fourth example of the reference embodiment of the non-contact data carrier device of the metal corresponding according to the present invention, FIG. 10 (b) perspective from D0 side of FIGS. 1 (a) FIG.

Explanation of symbols

10, 10A-10D Non-contact type data carrier device for metal (also simply referred to as data carrier device)
11 Non-contact type data carrier inlet portion 12 Ferromagnetic portion 12a Side wall portion 12b Support portions 12b1 to 12b5 Projection support portion 12c Recessed portion (also referred to as space portion)
12d Slit 12e Recess (also referred to as space)
12f Slits 12S1 to 12S5 Surface portions 13, 13a, 13b Adhesive layer 14 Spacers 20-22 (made of metal) Article 30, 31 Adhesive layer 41 IC chip 42 Antenna circuit portion (also referred to as antenna coil)
43a, 43b Chip terminals 45, 45a-46d Through-hole portions 46a, 46b Chip connection terminals 47 Chip mounting pads 48 Bonding wires 49 Sealing resin 50 Solder resist 51 (for wiring) Base material 52 Adhesive layer 60 Multilayer wiring base Material 110 Non-contact type data carrier inlet part 120 Spacer 130 Magnetic layer 140 Metal plate part 200 Non-contact type data carrier inlet part 210 IC chip 230 Base material 235 Antenna circuit part 240 Solder resist 250 Metal part 260 Multilayer wiring base material

Claims (5)

A non-contact type data carrier device for metal, comprising a non-contact type data carrier inlet portion having an antenna circuit portion and an IC chip on a base material, and one side and a side surface of the non-contact type data carrier inlet portion. and useless, to hold the non-contact data carrier inlet section, Ri Contact and a ferromagnetic body, the ferromagnetic part, the one side of the non-contact data carrier inlet portion, the ferromagnetic A holding portion that is held away from the body portion, and the outer peripheral portion of the non-contact data carrier inlet portion and the outside of the antenna circuit are fitted into the ferromagnetic portion, and the non-contact data carrier inlet portion is A fitting part to be held is provided, and this is used as a holding part, and the fitting part is provided with a slit-like concave part on the article side surface of the ferromagnetic part, Serial ends of the front and back of the non-contact data carrier inlet portion, toward its side circuit is electrically connected to that by arranging a metal layer is not non-contact data carrier device of the metal corresponding to said.   2. The metal-compatible non-contact type data carrier device according to claim 1, wherein the ferromagnetic part is ferrite. 3. The non-contact type data carrier device for metal according to claim 1 , wherein a holding part for holding a metal object is provided in the ferromagnetic part. Compatible non-contact data carrier device. 4. The non-contact type data carrier device for metal according to claim 1 , wherein the antenna circuit part of the non-contact type data carrier inlet part and one surface side of the non-contact type data carrier inlet part A metal-compatible non-contact type data carrier device, wherein a distance from the ferromagnetic part is 1 mm or more. 5. The non-contact type data carrier device for metal according to claim 1 , wherein the non-contact type data carrier inlet portion is a small size of 10 mm × 10 mm or less. Non-contact data carrier device for metal.

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