JP2000341023A - Connection type loop antenna and formation of same loop antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the degree of freedom of design, to easily secure desired communication performance and to cause no malfunction due to radio interference by connecting one end part to the other end of a beltlike sheet member having a plurality of conductor lines formed on its top surface. SOLUTION: On the top surface of a sheet member 1, seven nearly linear conductor lines 2 to (8) are formed of conductive ink. In the path of the conductor line (8), a noncontact type IC module 9 is connected. Further, an area 1a of the sheet member 1 is applied with an adhesive for tag connection. End parts 2a to 8a and other-end parts 2b to 8b of the respective conductor lines are arranged slightly shifted along the width direction of the sheet member 1. Both the end parts 1a and 1b of the beltlike member 1 are connected in a specific style and then the 7 linear conductor lines 2 to (8) formed on the top surface of the sheet member 1 from one loop antenna.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection type loop antenna and a method of forming the loop antenna, and more particularly to a loop antenna suitable for an IC tag for air luggage.

[0002]

2. Description of the Related Art When an airplane is used, passengers leave checked baggage during boarding procedures. A staff member of the airline carrier attaches a tag called a tag to the checked baggage and hands the stub to the passenger as a baggage claim number (claim tag). The tag for air baggage and its stub record information for identifying the checked baggage. Should your luggage not reach the destination airport, you will make a claim based on this stub.

[0003]

In general, air baggage tags are required to process a certain amount of information accurately and promptly. Therefore, it is conceivable to use, for example, an IC label instead of the conventional air luggage tag. An IC label is a type of IC card in which a non-contact type IC module and a loop antenna are incorporated.
It is configured such that it can be attached to a desired object surface as needed by the action of an adhesive applied to the back surface.

In an IC label, it is necessary to form a loop antenna according to, for example, a spiral two-dimensional pattern on a flat base material defined depending on the standard dimensions of the IC card. In this case, in order to secure the effective area of the antenna as large as possible in the same plane without impairing the conductivity, the degree of freedom of the loop antenna design (line width, line distance,
Line length) is considerably limited. As a result, with a conventional loop antenna formed on an IC label or the like, it is difficult to secure desired communication performance, and thus a sufficient communication distance at a desired frequency.

[0005] Further, since the IC label is always in a communicable state regardless of whether it is in use or not, the IC label before use is placed near a reader / writer (read / write device). (Or stored) may cause malfunction due to interference. If the communication distance of the reader / writer is improved in the future, the possibility of malfunction due to the above-mentioned interference may further increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and when applied to, for example, an IC tag, has a high degree of freedom in design and can easily secure a desired communication performance. An object of the present invention is to provide a highly reliable connected loop antenna that does not cause a malfunction and a method for forming the loop antenna.

[0007]

According to the present invention, there is provided a belt-like sheet member, and a plurality of conductive lines formed on a surface of the sheet member. Provides a connection type loop antenna, wherein a loop antenna is formed in a state where one end and the other end of the sheet member are connected.

According to a preferred aspect of the present invention, in a state where one end and the other end of the sheet member are connected, one end of one conductive line of two adjacent conductive lines is provided. Is connected to the other end of the other conductive line, and one end of one of the two outermost conductive lines is connected to the other end of the other conductive line. Preferably. In this case, in order to connect one end of one conductive line of the two adjacent conductive lines to the other end of the other conductive line, an adhesive is attached to one end of the sheet member. Is preferably applied.

According to a preferred aspect of the present invention, when one end and the other end of the sheet member are connected, one of the two outermost conductive lines is formed. One end of the conductive line and the other end of the other conductive line are staples that penetrate both the one end of the one conductive line and the other end of the other conductive line. It is preferable that the connection be made via a connection. Alternatively, a pair of through holes is formed at one end of the sheet member, and a connection sheet member provided with a conductive line for connection is provided on the back side of the one end, and one side of the sheet member is provided. And one end of the one conductive line and the other end of the other conductive line out of the two outermost conductive lines in a state in which the end is connected to the other end. Is preferably connected via the pair of through holes and the connection conductive line.

[0010] Alternatively, a pair of cutouts are formed at one end of the sheet member, and a connection sheet member provided with a conductive line for connection is provided behind the one end, In a state in which one end and the other end of the sheet member are connected, one end of the one conductive line and the other conductive line of the two outermost conductive lines are formed. Is preferably connected to the other end via the pair of cutouts and the connection conductive line. Alternatively, further, at one end of the sheet member, one end of the one conductive line and one end of the other conductive line of the two outermost conductive lines are provided. One of the one conductive line of the two outermost conductive lines is formed in a state where a connecting conductive line to be connected is formed and one end and the other end of the sheet member are connected. And the other end of the other conductive line are preferably connected via the connecting conductive line. Further, it is preferable that a protection means for protecting the plurality of conductive lines is provided. Preferably, the plurality of conductive lines are formed by a screen printing method using a conductive ink.

According to another aspect of the present invention, a conductive line forming step of forming a plurality of conductive lines on the surface of a belt-shaped sheet member, and one of the sheet members having the plurality of conductive lines formed thereon A connecting step of forming a loop antenna based on the plurality of conductive lines by connecting one end of the loop antenna to the other end.

[0012]

In the present invention, a plurality of conductive lines formed on the surface of a sheet member form a loop antenna by connecting both ends of a band-shaped sheet member in a predetermined form. That is, in the present invention, a plurality of conductive lines formed on the substrate plane according to a very simple pattern,
For example, one loop antenna is formed based on a plurality of conductive lines extending substantially linearly along the longitudinal direction of the sheet member. In this case, the cost of forming the loop antenna is significantly reduced as compared with a conventional loop antenna formed according to a two-dimensional and complicated pattern such as a spiral shape on a substrate plane limited to a predetermined standard size. Design flexibility (line width, line spacing,
Line length) is significantly improved. As a result, the connection type loop antenna of the present invention can secure desired communication performance, that is, a sufficient communication distance at a desired frequency.

Further, in the connection type loop antenna of the present invention, both ends of the sheet member are connected at the time of use, unlike a conventional loop antenna which is always in a communicable state regardless of whether it is in use or not. Thus, the communication is enabled for the first time. Therefore, for example, when the connected loop antenna of the present invention is applied to an IC tag or the like, even if the IC tag before use is placed (or stored) near the reader / writer, a malfunction due to interference does not occur. . As a result, according to the present invention, a highly reliable IC tag and a highly reliable loop antenna can be realized.

An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a developed view schematically showing a configuration of an IC tag having a built-in connection type loop antenna according to a first embodiment of the present invention. FIG. 2 is a diagram showing a use state of the IC tag of FIG. In each embodiment, the connection type loop antenna of the present invention is applied to a loop antenna of an air luggage IC tag. As shown in FIG. 1, an IC tag having a built-in connection type loop antenna according to the first embodiment includes an elongated strip-shaped sheet member 1. As the sheet member 1, various types of paper such as high-quality paper, matte paper, coated paper, synthetic paper, and the like can be used.

On the surface of the sheet member 1 as a base material, seven substantially linear conductive lines 2 to 8 are formed along the longitudinal direction (horizontal direction in FIG. 1) of a screen using conductive ink. It is formed by a printing method. Here, the seven conductive lines 2 to 8 are formed at an interval from each other, and the respective conductive lines are in a state of being electrically insulated from each other. Of the seven conductive lines, the conductive line 8 located at the uppermost position in FIG.
Is connected to a non-contact type IC module (IC chip) 9. That is, the conductive line 8 is composed of two partial conductive lines 8A and 8B, the inner end 8c of the partial conductive line 8A is connected to one terminal of the IC module 9, and the inner end 8d of the partial conductive line 8B is connected. IC
It is connected to the other terminal of the module 9. Note that I
The C module 9 is a very thin element, and after the step of forming each conductive line, the sheet member 1 is coated with an appropriate adhesive.
Affixed to the surface.

The IC tag of the first embodiment having a built-in connection type loop antenna includes a protection sheet member 10 formed integrally with the sheet member 1. The protection sheet member 10 has substantially the same width dimension as the sheet member 1 and has a slightly shorter length dimension than the sheet member 1. FIG. 1 shows a state in which the protective sheet member 10 is expanded for clarity of the drawing. However, in a normal state of the IC tag, the IC tag is bent around a boundary line 10a between the sheet member 1 and the protective sheet member 10, The protective sheet member 10 covers most of the seven conductive lines 2 to 8 formed on the surface of the sheet member 1 and the IC module 9, that is, the area excluding the both ends 1 a and 1 b of the sheet member 1. Further, an adhesive for tag connection is applied to an area 1c (an area not covered by the protective sheet member 10) indicated by a broken line and an oblique line at one end (the right end in FIG. 1) 1a of the sheet member 1.

When an IC tag having a built-in connection type loop antenna according to the first embodiment is used, as shown in FIG. 2A, for example, a handle 11 of an air bag is included and one end 1a of the sheet member 1 is connected to the other end. The sheet member 1 is curved in a loop shape so that the end (the left end in FIG. 1) 1b faces the end. Then, one end 1a and the other end b of the sheet member 1 are connected to each other via the tag connecting adhesive by bonding them together by hand. By the way, as shown in FIG. 1, one end 2 a to 8 a of each conductive line at one end 1 a of the sheet member 1 and the other end 2 b to 8 b of each conductive line at the other end 1 b of the sheet member 1.
b is the widthwise direction of the sheet member 1 (vertical direction in FIG. 1)
Is slightly displaced along.

More specifically, in the use state shown in FIG. 2A, that is, in a state where one end 1a and the other end 1b of the sheet member 1 are connected by an adhesive, one of two adjacent conductive lines is used. One end (the end on the one end 1a side of the sheet member 1) of the conductive line is connected to the other end (the end on the other end 1b side of the sheet member 1) of the other conductive line (connection).
It is configured to be. Specifically, in the connection state by the adhesive, one end 3a of the conductive line 3 is connected to the other end 2b of the conductive line 2, one end 4a of the conductive line 4 is connected to the other end 3b of the conductive line 3, One end 5 of conductive line 5
a is connected to the other end 4b of the conductive line 4, one end 6a of the conductive line 6 is connected to the other end 5b of the conductive line 5, and one end 7a of the conductive line 7 is connected to the other end 6b of the conductive line 6. And
One end 8a of conductive line 8 and other end 7b of conductive line 7 are connected.

In other words, in the connection state by the adhesive, the seven conductive lines 2 to 8 are connected to the outermost two conductive lines 2 to 8.
One helical conductive line is formed with one end 2a of one conductive line 2 as a start point and the other end 8b of the other conductive line 8 as an end point. In the first embodiment, one end 2a of the conductive line 2 and the other end 8b of the conductive
In order to form one loop antenna, a staple binding needle that penetrates both the one end 2a of the conductive line 2 and the other end 8b of the conductive line 8 is used. This staple binding needle has a point 12a at one end 2a of the conductive line 2 and a point 13a at the other end 8b of the conductive line 8, and as a result, a corresponding point 12b at the other end 2a of the conductive line 2 and one end 8b of the conductive line 8. It will penetrate the corresponding point 13b.
As a result, one end 2a of the conductive line 2 and the other end 8a of the conductive line 8
b is connected via a staple binding needle 14 (its position is indicated by a broken line in FIG. 1), and one loop antenna is formed.

As shown in the perspective view of FIG.
An information writing surface 15 is provided on the back surface of the sheet member 1 on the other end 1b side.
Is provided. And, in this information description surface 15,
Destination 16, flight number 1 as with regular air luggage tags
7. Information such as the passenger number 18 is printed in advance.
In this way, a weak radio wave of a predetermined frequency is transmitted between the computer and the IC tag while the reader / writer connected to the computer or the like as the upper device is sufficiently close to the IC tag attached to the air baggage. The used communication can be performed. Specifically, when writing information related to air baggage to an IC tag, the computer transmits a communication radio wave via a reader / writer. The transmitted radio wave is I
Received via the loop antenna built into the C tag,
The information is written to a memory in the IC module as predetermined information. On the other hand, when reading information related to air baggage from the IC tag, the information stored in the memory in the IC module is read, and communication radio waves are transmitted via the loop antenna. The transmitted radio wave is received via a reader / writer and displayed on a computer display as predetermined information.

As described above, in the first embodiment, by connecting both ends of the belt-shaped sheet member 1 in a predetermined form,
Seven linear conductive lines 2 to 8 formed on the surface of the sheet member 1 form one loop antenna. That is, one loop antenna is formed based on a plurality of conductive lines formed on the plane of the base material according to a very simple pattern. In this case, the cost of forming the loop antenna is significantly reduced as compared with a conventional loop antenna formed according to a two-dimensional and complicated pattern such as a spiral shape on a substrate plane limited to a predetermined standard size. In addition, the degree of freedom in design (line width, distance between lines, line length) is significantly improved. As a result, the connection type loop antenna of the first embodiment can secure desired communication performance, that is, a sufficient communication distance at a desired frequency. Specifically, for example, RF-ID (Radi
o Frequency Identification) loop antenna can be realized.

Further, in the connection type loop antenna of the first embodiment, unlike the conventional loop antenna which is always in a communicable state irrespective of whether it is used before or during use, both ends of the sheet member 1 are used at the time of use. The communication is enabled only by connecting. Therefore, even if the IC tag before use is placed (or stored) near the reader / writer, a malfunction due to interference does not occur. As a result, in the first embodiment, a highly reliable IC tag and a highly reliable loop antenna can be realized. By the way, it is troublesome to peel a used IC label, and a used IC label that has been forgotten to be peeled or an IC label that has just been peeled off near a reader / writer may cause malfunction due to interference. On the other hand, an IC incorporating the connected loop antenna of the first embodiment
In the case of a tag, the operation of removing a used IC tag is easy, and the IC tag is not forgotten to be removed. In addition, since communication becomes impossible at the time of removal, even if the communication distance of the reader / writer is improved in the future,
The IC tag removed near the writer does not cause malfunction due to interference.

FIG. 3 is an exploded view schematically showing a configuration of an essential part of an IC tag having a built-in connection type loop antenna according to the second embodiment. FIG. 4 is a diagram showing a state in which a connection sheet member on which a connection conductive line is formed is provided at one end of the sheet member in FIG. FIG. 3 and FIG. 5 below
, The illustration of the protective sheet member is omitted. Second
The embodiment has a configuration similar to that of the first embodiment, but is basically different from the first embodiment in the connection form of the sheet members, particularly the connection form of the two outermost conductive lines.
That is, one end (2a) of one of the two outermost conductive lines and the other end (8b) of the other conductive line are connected via a staple binding needle in the first embodiment. On the other hand, in the second embodiment, the connection is made via a pair of through holes (through holes) and a conductive line for connection. 3, elements having the same functions as those of the first embodiment are denoted by the same reference numerals as those in FIG.
Hereinafter, the second embodiment will be described by focusing on the differences from the first embodiment.

In the IC tag with a built-in connection type loop antenna according to the second embodiment, a first circular through hole 21 is formed at one end 2a of the conductive line 2 as shown in FIG. Further, a second circular through hole 22 is formed at one end 8a of the conductive line 8. Here, the position of the second through hole 22 is a position facing the other end 8b of the conductive line 8 when both ends of the sheet member 1 are connected.
As shown in FIG. 4, a connection sheet member 23 is adhered via an appropriate adhesive to the back side of one end 1a of the sheet member 1 in which the pair of through holes 21 and 22 are formed. On the surface of the connection sheet member 23 (the surface on the sheet member side), a connection conductive line 24 that is continuous from immediately below the first through hole 21 to immediately below the second through hole 22 is formed. It is to be noted that an adhesive for tag connection is applied to a region 1c indicated by a broken line and an oblique line on one end 1a of the sheet member 1 as in the first embodiment.

Therefore, when the IC tag having the built-in connection type loop antenna of the second embodiment is used, similarly to the first embodiment, the sheet member 1 has one end 1a and the other end 1b opposed to each other. The first end 1a and the other end b of the sheet member 1 are connected to each other via a tag connecting adhesive by bending the first member 1 in a loop shape and pasting it by hand. as a result,
In the IC tag having a built-in connection type loop antenna according to the second embodiment, one end 2a of the conductive line 2 and the other end 8b of the conductive line 8 are formed on the surface of the pair of through holes 21 and 22 and the connecting sheet member 23. Via the connection conductive line 24, thus forming one loop antenna. The IC tag having a built-in connection type loop antenna of the second embodiment has the same operation and effect as the first embodiment, but the connection operation is more complicated than that of the first embodiment because no staple is used for connecting both ends of the IC tag. Is simple.

FIG. 5 is an exploded view schematically showing a configuration of a main part of an IC tag having a built-in connection type loop antenna according to the third embodiment. The third embodiment has a configuration similar to that of the second embodiment. However, in order to connect one end (2a) of one conductive line and the other end (8b) of the other conductive line in the two outermost conductive lines, in the second embodiment, a pair of through holes is used. Whereas, the third embodiment uses a pair of notches. In FIG. 5, elements having the same functions as those of the second embodiment are given the same reference numerals as in FIG. Hereinafter, the third embodiment will be described by focusing on the differences from the second embodiment.

In the IC tag having a built-in connection type loop antenna according to the third embodiment, as shown in FIG. 5, a first rectangular cutout portion 31 is formed at one end 2a of the conductive line 2. Further, a second rectangular cutout 32 is formed at one end 8a of the conductive line 8. Here, the position of the second notch 32 is a position facing the other end 8b of the conductive line 8 when both ends of the sheet member 1 are connected. Further, similarly to the second embodiment, on the back side of one end 1a of the sheet member 1 in which the pair of notches 31 and 32 are formed,
The second notch 32 is located immediately below the first notch 31.
, A connection sheet member (not shown) on which a continuous connection conductive line (not shown) is formed is adhered. Further, similarly to the first and second embodiments, an adhesive for tag connection is applied to an area 1c indicated by a broken line and an oblique line on one end 1a of the sheet member 1.

Therefore, when the IC tag having the built-in connection type loop antenna of the third embodiment is used, similarly to the first and second embodiments, one end 1a of the sheet member 1 is used.
The sheet member 1 is curved in a loop shape so that the sheet member 1 and the other end 1b are opposed to each other, and the sheet member 1 is attached by hand to connect the one end 1a and the other end b of the sheet member 1 via a tag connecting adhesive. As a result, in the IC tag having the connected loop antenna according to the third embodiment, one end 2a of the conductive line 2 and the other end 8b of the conductive line 8 are connected to the pair of cutouts 31 and 3.
2 and a connection conductive line formed on the surface of the connection sheet member to form one loop antenna. I with the built-in connection type loop antenna of the third embodiment
The C tag has the same operation and effect as the second embodiment.

FIG. 6 is a developed view schematically showing a main part of an IC tag having a built-in connection type loop antenna according to a fourth embodiment. The fourth embodiment has a configuration similar to the first to third embodiments. However, in the first to third embodiments, each conductive line is electrically insulated from each other on the surface of the sheet member, whereas in the fourth embodiment, the two outermost conductive lines are formed. One end (2a) of one conductive line and one end (8a) of the other conductive line
Are formed. 6, elements having the same functions as those of the first embodiment are denoted by the same reference numerals as in FIG. Hereinafter, the fourth embodiment will be described focusing on the differences from the first embodiment.

In the IC tag with a built-in connection type loop antenna according to the fourth embodiment, as shown in FIG. 6, a connecting conductive line 41 connecting one end 2a of the conductive line 2 and one end 8a of the conductive line 8 is formed. ing. Also, the other end 1b of the sheet member 1
Is provided with a blank area 42 corresponding to the formation area of the connection conductive line 41. In addition, one end 1 of the sheet member 1
In FIG. 6, a region 1c indicated by a broken line and an oblique line, that is, a region including one end of each conductive line and the conductive line 41 for connection and not covered by the protective sheet member 10 (shown by a broken line in FIG. 6). The point in which the adhesive is applied is the same as in the first to third embodiments.

Therefore, even when the IC tag having the built-in connection type loop antenna of the fourth embodiment is used, the one end 1a and the other end 1b of the sheet member 1 are connected similarly to the first to third embodiments. One end 1a and the other end b of the sheet member 1 are connected to each other via the tag connecting adhesive by bending the sheet member 1 in a loop shape so as to face each other and pasting them together by hand. As a result, in the IC tag having a built-in connection type loop antenna according to the fourth embodiment, one end 2a of the conductive line 2 and the other end 8b of the conductive line 8 are connected to the connecting conductive line 41 formed on the surface of the sheet member 1. , And one loop antenna is formed. The IC tag having the built-in connection type loop antenna of the fourth embodiment has the same operation and effect as those of the first to third embodiments, but uses staples and connects a sheet member for connection at both ends of the IC tag. The connection operation is simpler than in the first to third embodiments, since the attachment is unnecessary.

In each of the above embodiments, an example is shown in which paper is used for the sheet member serving as the base material. However, the material of the base material is not limited to paper in the present invention. For example,
The sheet member can be formed using various films made of a thermoplastic resin or a thermosetting resin such as polyethylene, polypropylene, ABS resin, vinyl chloride, and polyimide. In this case, the surface of various papers and various films can be subjected to appropriate physical treatment or chemical treatment. Further, the sheet member can be formed using an appropriate nonwoven fabric.

Further, in each of the above-described embodiments, an example is shown in which each conductive line is formed by a screen printing method using a conductive ink. However, the present invention is not limited to printing, but includes etching, vapor deposition paper processing, and the like. Each of the conductive lines can be formed by other suitable methods such as a vapor deposition film processing. Further, in each of the above-described embodiments, each conductive line and the IC module are protected by the protection sheet member formed integrally with the sheet member, but this protection sheet member may be adhered to the sheet member. Alternatively, the sheet member may be simply covered with the protective sheet member. Further, without being limited to this example, various protection means can be used, and a configuration in which no protection means is used is also possible.

Further, in each of the above-described embodiments, an example is shown in which an adhesive for tag connection is applied to one end of the sheet member and both ends of the sheet member are connected by sticking by hand. Adhesive for tag connection can be applied to both ends. In this case, the adhesive may be applied uniformly, or the adhesive may be applied according to a predetermined pattern such as a stripe shape or a dot shape. Alternatively, tag connection may be performed simply by sticking together by hand. For example, an adhesive made of a thermosetting resin is used, and both ends of the stacked sheet members are pressed while heating using a predetermined device. In this way, tag connection can be performed.

Further, in the above-described second embodiment, an example is shown in which a circular through-hole is used, but the shape of the through-hole is not limited to a circle, and various shapes are possible. Similarly, in the above-described third embodiment, an example is shown in which a rectangular notch is used, but the shape of the notch is not limited to a rectangle, and various shapes are possible.

In each of the above embodiments, seven conductive lines are formed on the surface of the sheet member. However, the number of conductive lines formed on the surface of the sheet member, the shape of each conductive line, etc. Without being limited to the embodiment, various modifications can be made within a wide range of design freedom.
Further, in each of the above-described embodiments, the outermost formed 2
The non-contact type IC module is connected in the path of one of the conductive lines, but may be connected in the path of another suitable conductive line.

In each of the above embodiments, the air baggage I
Although the connection type loop antenna of the present invention is applied to the C tag, the present invention can be applied to general tags and other appropriate products without being limited to this.
Hereinafter, other application examples of the connection type loop antenna of the present invention will be described.

FIG. 7 is a diagram showing an example in which the connection type loop antenna of the present invention is applied to a card-shaped object. In the application example shown in FIG. 7, a sheet member 71 on which a connection type loop antenna of the present invention is formed is attached to a card-shaped object 72. The sheet member 71 has, for example, a configuration similar to that of the above-described second embodiment, and incorporates a non-contact type IC module. The sheet member 71 is attached to the card-shaped object 72 such that the surface thereof (the surface on which the conductive line is formed) faces the surface of the card-shaped object 72. The sheet member 71 may be attached to a card-shaped object 72 or may be simply wound around the card-shaped object 72.

In this case, as shown in FIG. 7A, the surface of the one end 71a and the surface of the other end 71b of the sheet member 71 are connected to the object 7 as the connection form of both ends of the connection type loop antenna.
2 and can be simply connected to each other by bonding or the like so as to protrude from the second surface. Alternatively, as shown in FIG. 7B, one end 71a of the sheet member 71 may be folded back, and the surface of the other end 71b may be overlapped with the surface of the folded one end 71a and connected by bonding or the like. Further, FIG.
As shown in (c), by applying an appropriate deformation,
A form in which the surface of the other end 71b is simply overlapped with the back surface of the one end 71a of the sheet member 71 and connected by bonding or the like is also possible.

FIG. 8 is a diagram showing an example in which the connection type loop antenna of the present invention is applied to a columnar object. In the application example shown in FIG. 8, a sheet member 81 on which a connection type loop antenna of the present invention is formed is attached to a columnar object 82. The sheet member 81 has the same configuration as the above-described sheet member 71, and is attached to the columnar object 82 such that the surface thereof faces the surface of the columnar object 82. Note that the sheet member 81 may be attached to a columnar object 82 or may be simply wound around the columnar object 82. Also, in the case of FIG. 8, the connection form at both ends of the connection type loop antenna is shown in FIGS.
The following forms are possible.

As described above, the sheet member on which the connection type loop antenna of the present invention and the non-contact type IC module are formed can be formed into various shapes (arbitrary shapes without being limited to a card shape and a column shape). Can be attached to an object. As a result, it is possible not only to accurately and quickly manage and process information on the various shapes of the object itself, but also to obtain information on humans and animals carrying the object, information on plants and objects holding the object, and the like. Can be managed and processed accurately and quickly.

[0042]

As described above, according to the present invention, one loop antenna is formed based on a plurality of conductive lines formed on the plane of the base material according to a very simple pattern. Not only cost is significantly reduced, but also its design flexibility (line width, line distance,
Line length) is significantly improved. As a result, the connection type loop antenna of the present invention can secure desired communication performance, that is, a sufficient communication distance at a desired frequency.

Further, in the connection type loop antenna of the present invention, the loop antenna is formed and becomes communicable only when both ends of the sheet member are connected at the time of use. Therefore, for example, when the connected loop antenna of the present invention is applied to an IC tag or the like, a malfunction due to interference does not occur even if the IC tag before use is placed near the reader / writer. As a result, according to the present invention, a highly reliable IC tag and a highly reliable loop antenna can be realized.

[Brief description of the drawings]

FIG. 1 is a development view schematically showing a configuration of an IC tag having a built-in connection type loop antenna according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a use state of the IC tag of FIG. 1;

FIG. 3 is a development view schematically showing a main part configuration of an IC tag having a built-in connection type loop antenna according to a second embodiment.

4 is a view showing a state in which a connection sheet member on which a connection conductive line is formed is provided at one end of the sheet member of FIG. 3;

FIG. 5 is a development view schematically showing a main part configuration of an IC tag having a built-in connection type loop antenna according to a third embodiment.

FIG. 6 is a developed view schematically showing a configuration of a main part of an IC tag including a connected loop antenna according to a fourth embodiment.

FIG. 7 is a diagram showing an example in which the connected loop antenna of the present invention is applied to a card-shaped object.

FIG. 8 is a diagram showing an example in which the connection type loop antenna of the present invention is applied to a cylindrical object.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet member 2-8 Each conductive line 9 IC module 10 Protective sheet member 11 Handle 14 Staple binding needle 21, 22 Through hole 31, 32 Notch 41 Connection conductive line

Claims (8)

[Claims] 1. A belt-shaped sheet member, and a plurality of conductive lines formed on a surface of the sheet member, wherein the plurality of conductive lines are formed at one end and the other end of the sheet member. Forming a loop antenna in a connected state. 2. In a state where one end and the other end of the sheet member are connected to each other, one end of one conductive line of the two adjacent conductive lines and the other of the other conductive lines. And one end of one conductive line of the two outermost conductive lines and the other end of the other conductive line are connected to each other. Item 2. The loop antenna according to item 1. 3. An end of the sheet member for connecting one end of one conductive line of the two adjacent conductive lines to the other end of the other conductive line. The loop antenna according to claim 2, wherein an adhesive is applied. 4. In a state where one end and the other end of the sheet member are connected to each other, one end of the one conductive line of the two outermost conductive lines and the other end thereof. And the other end of the conductive line is connected via a staple binding needle that penetrates both one end of the one conductive line and the other end of the other conductive line. The loop antenna according to claim 2 or 3, wherein 5. A connecting sheet member having a pair of through holes formed at one end of the sheet member, and a connecting conductive line formed at the back side of the one end, wherein the sheet is provided. In a state in which one end and the other end of the member are connected, one end of the one conductive line and the other of the other conductive line of the two outermost conductive lines are formed. 4. The loop antenna according to claim 2, wherein the end portion is connected via the pair of through holes and the connection conductive line. 5. 6. A connection sheet member having a pair of cutouts formed at one end of the sheet member, and a connection conductive line formed at the back of the one end, In a state in which one end and the other end of the sheet member are connected, one end of the one conductive line and the other end of the other conductive line of the two outermost conductive lines are connected. 4. The loop antenna according to claim 2, wherein the other end is connected via the pair of cutouts and the connection conductive line. 5. 7. An end of the sheet member, one end of one of the two outermost conductive lines and one end of the other conductive line. And a connecting conductive line connecting the one end of the sheet member and the other end is connected to one of the two outermost conductive lines. The loop antenna according to claim 2, wherein one end of the loop antenna is connected to the other end of the other conductive line via the connection conductive line. 8. A conductive line forming step of forming a plurality of conductive lines on the surface of a belt-shaped sheet member, and forming one end and the other end of the sheet member on which the plurality of conductive lines are formed. Forming a loop antenna based on the plurality of conductive lines by connecting the loop antennas.