KR20090107404A - And its manufacturing method - Google Patents

Abstract

PURPOSE: An RFID tag and a manufacturing method thereof are provided to make a magnetism tag function and an RFID tag function efficiently exist together. CONSTITUTION: An RFID tag which wirelessly transmits information recorded in an IC chip(3) comprises an antenna. The antenna is connected with the IC chip, and a part of the antenna shows the magnetism. The antenna consists of the first antenna(1) and the second antenna. The first antenna connects to the IC chip. The second antenna has the magnetism electrically connected with the first antenna.

Description

RFID tag and its manufacturing method {RFIDD AND AND ITS MANUFACTURING METHOD}

The present invention relates to an R F Id (Radio Frequency Identification) tag that transmits information such as identification (identification information) recorded on an IC chip through RF (Radio Frequency: wireless).

As a means of preventing the illegal expenditure of articles | goods etc., the security tag called the detection marker using magnetic material, a magnetic tag, etc. is used. The sensing marker is composed of a soft magnetic material and generates a voltage pulse to the detection coil in the gate device by the Barkhausen effect by an alternating magnetic field coming out of the gate device installed in the entrance or the like.

Thus, when passing through the gate with an article equipped with a detection marker, the gate device detects a voltage pulse and emits an alarm sound.

There is also a detection marker that prevents an alarm from being issued for articles taken out through regular expenditure procedures. This can control the Barkhausen effect of the soft magnetic material by controlling the placement of the semi-magnetic magnetic material on the soft magnetic material and controlling the magnetization or not of the semi-magnetic magnetic material. As a result, it is possible to discriminate whether it is a normal spending or an irregular spending by the voltage pulse generated in the detection coil of the gate device.

Patent Document 1 discloses a security tag composed of a combination of a detection marker made of a thin layer of soft magnetic material and an RFID tag having an IC chip at a position not overlapping the thin layer.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2004-227508 (Fig. 1)

The technique described in Patent Document 1 enables the function of monitoring an article by magnetic sensing and the management of the article by an RFID tag receiving information of the IC chip by radio communication. However, Patent Document 1 discloses a tag in which a magnetically operated soft magnetic part and a wireless tag mounted with an IC chip are mounted in parallel.As the soft magnetic material peels and the antenna of the RFID approaches, the antenna characteristic of the RFID tag is changed. There is a problem such as that the communication distance can not be obtained and cannot be located close to each other. Therefore, there is a problem that the shape of the tag becomes large or the reading direction of the RFID is limited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an RFID tag for article management which has two functions of a magnetic tag and an RFID tag on which an IC chip is mounted, and can further extend the communication range of the RFID tag. Let's make it a task.

In order to achieve the above object, the RFID tag of the present invention has the following configuration. To this end, the RFID tag of the present invention is an RFID tag mounted with an IC chip capable of receiving information from outside without contact, and an antenna having conductivity mounted thereon with an IC chip is magnetic at least partly. It can be realized by providing a magnetic body portion in the antenna. Moreover, in order to implement | achieve this, the structure which uses the 1st conductive antenna which mounted an IC chip as an antenna, and the 2nd antenna which is magnetic substance and electroconductive is also included in this invention. In this case, the information stored in the IC chip is transmitted from the first antenna and the second antenna. In this case, it is good also as a structure which electrically connected the 1st antenna and the 2nd antenna.

The present invention also includes disposing a detection marker (magnetic tag) made of magnetic material and an antenna (or the IC chip itself) for extracting information of the IC chip in a predetermined positional relationship. In this case, the antenna is placed at the end of the RFID tag in a serial direction in the direction of the sensing marker and the RFID tag length (rectangular). The present invention also includes the RFID tag attached so that the antenna (or IC chip) is the end of the attached object. In this case, one type of the present invention also includes attaching RFID tags to each of the plurality of attached objects, arranging them at the ends of the attached objects, and reading information from these RFID tags. . For example, if an RFID tag is attached to the back of a book cover and hanged on a bookshelf, the position of the antenna (or IC chip) is placed almost horizontally, and the information on the plurality of books is read. It becomes easy.

In the present invention, it is more suitable to use a soft magnetic body as the magnetic body.

 According to the RFID tag of the present invention, it is possible to efficiently coexist the magnetic tag function and the RFID tag function.

EMBODIMENT OF THE INVENTION Hereinafter, the following describes the most suitable example related to the best form (henceforth "embodiment") for implementing this invention, referring drawings.

(1st embodiment)

First, the RFID tag of 1st Embodiment is demonstrated, referring FIG. 1A shows the basic shape of the RFID tag 10 of the present embodiment. The RFID unit in which the IC chip 3 is mounted on the first antenna 1 made of the conductor and the second antenna 2 made of soft magnetic material are electrically connected. The first antenna 1 is formed with an L-shaped slit 4 which performs impedance matching between the first antenna 1 and the IC chip 3, and performs impedance matching with the IC chip. The connection method of the 1st antenna 1 and the IC chip 3 is mentioned later. The 1st antenna 1 and the 2nd antenna 2 have the overlap part 50, and are electrically connected through the adhesive material or adhesive material which is not shown in figure, whether two antennas which are conductors directly contact. The first antenna 1 and the second antenna 2 are held by the base film 5.

As the first antenna material, metals such as Al, Cu, and Ag can be used. In this embodiment, 10 micrometers thick Al peelings were used. Examples of the material of the second antenna 2 include a permroy, a B-C-Fe alloy, an amorphous metal, for example, an amorphous pulse metal mainly composed of Co-Fe-Si-B.

  Fig. 1 (b) shows the RFID tag structure from the lateral direction. The IC chip 3 is mounted on the first antenna 1 and the second antenna 2 is overlapped from above on the overlapping portion 50 on the first antenna 1.

FIG. 1C shows an embodiment in which the stacking order of the first antenna and the second antenna is reversed. When the magnetic tag is already attached to the article, as shown in (c), even if the first antenna on which the IC chip 3 is mounted is provided on the magnetic tag 2a via the overlapping portion 50a ( The same effect as b) can be obtained. On the contrary, when the RFID tag is already installed, the same effect can be obtained even when the RFID tag is mounted in the form of (b).

2 shows a tag 11 in which a magnetic tag and an RFID tag of a conventional structure are combined in a long direction in series. The IC chip 3 is mounted on the antenna 6 of the RFID tag portion. The antenna 6 is an electrical length 1/2 lambda of the frequency to be used if it is a dipole structure. Specifically, in the microwave band 2.45 GHz, the length of the antenna 5 is about 53 mm. This length changes with the material etc. of the article to be mounted. The magnetic tag 7 is arranged and held by the base film 9 without contacting the antenna 6 in the long direction of the antenna 6.

If the length of the 2nd antenna 2 which has a magnetic tag function in FIG. 1, and the magnetic tag 7 in FIG. 2 is the same, the length of the 1st antenna 1 in FIG. 1, and FIG. There is an advantage that the RFID tag of Fig. 1 showing the present embodiment can be made smaller in size by the difference in the length of the antenna 6 of the RFID and the interval between the antenna 6 and the magnetic tag 7.

Next, the communication range which reads the information of the IC chip 3 in the RFID tag 10 of this embodiment shown in FIG. 1, and the tag 11 of the conventional structure shown in FIG. 2 is compared.

As shown in Fig. 3 (a, b), each tag 10 and 11 is attached to a book A12 size. The mounting position is near the back of the book (9). In addition, the vicinity may be within a predetermined range. In this state, the communication distance was measured by a reader device with an output of 300 mW and an antenna gain of 6 dBi with a frequency of 2.45 GHz. The antenna width of the 1st antenna 1 and the 2nd antenna 2 was 1.5 mm. The results are shown in Fig. 4 (a, B). In the tag 10 of the present embodiment, a communication range as shown in the read range 13 in (a) can be obtained. When the reader antenna exists in this communication range, it indicates that the information of the IC chip 3 can be read. In the tag 11 of the conventional structure, the range shown by the read range 14 shown in (b) is the read range where the information of the IC chip 3 is read. Here, the direction perpendicular to the long direction of the book 12 is defined as the reading direction X, and the parallel direction is defined as the reading direction Y.

The maximum communication distance of each reading direction X became 180 mm in the tag a of this embodiment, and 200 mm in the tag b of the conventional structure. The maximum communication distance in the read direction Y was 110 mm in (a), and the information in the IC chip 3 could not be read in (b) of the conventional structure. The readability of the tag 10 and the conventional structure 11 of this embodiment are compared. The reader antenna is moved around 20 mm away from the book 12, and the range in which the information of the IC chip 3 can be read is measured. In (a), the range represented by the solid line A-A 'is 330 mm. In (b), the range shown by the solid line B-B 'is 140 mm, and the tag 10 of this embodiment can read the information of the IC chip 3 in the range of 2.4 times wider.

In addition, when comparing the area of the area where the information of the IC chip 3 can be read, that is, the read ranges 13 and 14, the tag 10 of the present embodiment is 1.8 times wider than the tag 11 of the conventional structure. It was confirmed by the measurement.

The big feature of the tag of this embodiment is that in the tag structure of this embodiment, the information of the IC chip 3 is read from the Y direction which is a long direction of a tag. In the conventional structure, as shown in (b), only the range close to the width of the antenna 5 in the direction parallel to the tag 11 can communicate with the IC chip. On the other hand, in the structure of this embodiment, as shown to (a), the direction parallel to the 1st antenna 1 and the 2nd antenna 2, the reading direction X, and the reading direction which is the bottom side of the book 9 From Y, the information of the IC chip 3 can be read.

Next, the optimization of the first antenna length and the second antenna length will be described with reference to FIGS. 5 and 6. Here, the first antenna length is defined as L1, the second antenna length is defined as L2, and the tag antenna length is defined as L = L1 + L2. 5 is a result of measuring the communication distance of the RFID tag 10 when the length of the second antenna is changed as L1 = 25 mm. The communication distance changes depending on the length of L2. This change is maximized by an integer multiple of λ / 2 of the frequency used by L, that is, L = (λ / 2) × n (n: integer). Λ here varies depending on the dielectric constant of the article the antenna is in contact with. Fig. 6 shows a communication distance when the RFID tag length L is fixed and the first antenna length L1 is shortened from 26 mm (equivalent to 1/2 lambda length). Between 26 and 15 mm, the communication distance gradually decreases from this and rapidly decreases from 15 mm. This is due to the fact that the L1 length is shortened, resulting in impedance matching between the first antenna and the IC chip 3.

As shown in FIG. 7, when a plurality of books 12a to 12h are arranged, in the tags 10a to 10h of the present embodiment, radio waves 16a radiated from the reader antenna 15a in a parallel direction behind the book and Information mounted on the IC chip 3 can be read from the radio wave 16b radiated from the reader antenna 15b in a direction parallel to the bottom side. The tag 11 of the conventional structure cannot read the information of the IC chip 3 from the bottom of the book. Each reader antenna is connected to the reader device 17.

According to the present embodiment, as described above, the method of attaching tags to a plurality of books and managing them can be conceived of two methods of reading from the communication characteristic of the tag from the parallel direction X and the bottom side direction Y of the book. .

In the case of the book management of a book, the reading method can be responded from the former back direction. Moreover, when real-time management of a book, ie, what is currently managed on the shelf in real time, the method of always reading from under the shelf board is effective. This can be done in the form as shown in FIG. The RFID tag 10a-10h, the book 12a-12h, the reader antenna 15c, the reader apparatus 17, and the shelf board 36 are comprised. The information of the IC chip 3 can be read by radio waves radiated from the reader antenna 15c disposed under the shelf board. This makes it possible to easily manage the goods in real time. By using an antenna with a wide radiation range, you can manage more books. In addition, in FIG. 10, although the 1st antenna and IC chip were arrange | positioned at the edge part of an RFID tag or a book, you may arrange | position so that it may become a relatively nearly constant position.

According to the above embodiment, the first antenna in which the IC chip is mounted and the second antenna having the magnetic tag function are integrated, and the RFID tag having the magnetic tag function and the communication range of the wider IC chip can be provided. .

In this embodiment, although the 2nd antenna 2 is attached to the edge part of the longitudinal direction of the 1st antenna 1, the 2nd antenna 2 is attached to the both ends of the 1st antenna 1 in the longitudinal direction, respectively. One may be attached.

(Second embodiment)

2nd Embodiment is demonstrated by FIG. In Embodiment 1, the 1st antenna 1 in which the IC chip 3 was mounted, and the 2nd antenna 2 formed from the soft magnetic body are electrically connected. As shown in (a), in the second embodiment, the material forming the first antenna 1 and the second antenna 2 is made of the same soft magnetic material as the conductive material, and the first antenna 1 is used. And an antenna 18 in which the second antenna 2 is integrated. That is, at least part of the antenna is magnetic. In other words, a magnetic body portion is provided in the antenna. In the antenna 18, a slit 20 for impedance matching of the IC chip 3 is formed. By mounting the IC chip 3 on the antenna 18 so as to pass over the slit 22, communication characteristics equivalent to those of the first embodiment can be obtained. At the same time, it is possible to form an RFID tag which also has a function as a magnetic tag. In this embodiment, the antenna 18 in which the IC chip 3 is mounted is held by the base film 20. In the present embodiment, an amorphous alloy peel having a conductivity of 200 μm thickness was used. The base film 20 used PET material (50 micrometers thickness). (b) shows the tag of this embodiment from the horizontal direction.

In manufacturing the RFID tag in this embodiment, there is an effect that the processing of the first antenna, the processing of the second antenna, and the connection process of the first antenna and the second antenna can be omitted. In addition, since the first antenna and the second antenna are integrated without overlapping, a flat tag and a thinner tag can be manufactured without thickening the tag antenna at an overlapping portion of the antenna. The flattening and thinning of the tag also have the advantage that the tag durability and wearability can be improved.

The RFID manufacturing process in this embodiment is demonstrated using FIG. In FIG. 10A, a method of forming the slits 22 in the conductive soft magnetic body 21 will be described. L-shaped slits 22 are formed in the soft magnetic body 21 by punching using the L-shaped mold 50 in the roll-shaped soft magnetic body 21.

As a result, as shown in (b), L-shaped excerpts are continuously formed on the soft magnetic body 21 by the mold 50. The dotted line 30 in the middle is a line indicating the cutting position, and the antenna 21 can be formed by cutting the broken line 30.

Next, the formation method of the slit 22 is demonstrated using FIG. The slits are formed by the cutting process in order to extract the L-shape formed by the mold 50 described above and the antenna 18. As shown in (a), the L-shaped slits 25 as shown in (b), (c) and (d) are formed by the cutting positions 30A, 30B and 30C of the continuous soft magnetic body 21. can do. In the case of cutting at the cutting position 30A shown in (b), since the stub formed by the slit 25 described later cannot be made, impedance matching between the IC chip 3 and the antenna cannot be performed. In (c), the desired L-shaped slit can be used to form a stub, so that impedance matching with the IC chip 3 can be achieved. In (d), the size of the stub is reduced, so that impedance matching between the IC chip 3 and the antenna can be performed. Although the depression of 31b and 31c is formed in a tag antenna, there is no big difference in an electrical characteristic.

Therefore, the slit can be formed by appropriately setting the L-shaped extract and the cutting position 30 formed by punching. Specifically, as shown in (e), the tag can be manufactured with a good product ratio by making the cutting position 30D from the L-shaped end portion larger ΔX than the cutting width accuracy.

12 is a diagram illustrating a manufacturing process of the RFID tag 29. L-shaped excerpts are formed using the excerpt (24) on successive soft magnetic bodies. Next, the base film 26 is contacted and the soft magnetic body 21 is held. The IC chip 3 is mounted on this. Moreover, the RFID tag 29 is completed by providing the protective film 27, and attaching the adhesive material 28 with a peeling paper on the back surface, and cutting | disconnecting by the saw tooth 25.

As the method for forming the slit, it can be formed by etching, but there are problems such as the selection of the etching solution and the control of the etching rate, and there is an advantage that the slit formation by punching can be applied without depending on the material to be processed.

(Third embodiment)

In the third embodiment, the Barkhausen effect of the soft magnetic material can be controlled by attaching a small horseshoe of a semi-magnetic material to the magnetic tag portions of the first and second embodiments. This structure will be described with reference to FIG. (a) is a top view, (b), (c) shows the tag structure which added the function of this embodiment to the structure shown to FIG. 1 (b), (c) in Embodiment 1 from the horizontal direction. will be. (b) and (c) together, the small horseshoe of a semi-magnetic magnetic material is mounted on the second antenna 2. FIG. 14: is provided with the small horseshoe of a semi-magnetic magnetic material in the tag structure shown by 2nd Embodiment. As the semi-magnetic magnetic material, there are Fe alloy, Co alloy, and the like. If the thickness is 50 to 100 µm and the length of about 3 mm, sufficient active activity can be provided.

By setting it as the structure of this embodiment, the precision of article management can be raised. In the expenditure management of the article, first, the information of the IC chip is read, and when the release processing is performed on the base, the semi-magnetic material is magnetized and the Barkhausen effect is stopped. In other words, even when passing through the gate, the alarm is weakened so that no alarm is issued. The information read processing and the magnetization processing of the IC chip can be performed more reliably by performing a series of processing by the same apparatus. In the read operation of the IC chip information, there is an advantage that the structure of the present embodiment, which has a wide communication range with the IC chip, can be easily and reliably implemented.

(Fourth embodiment)

In the fourth embodiment, the communication distance from the long direction (reading direction Y) of the RFID tag 10 can be increased by arranging a third antenna having a length of 1/2 lambda at the end of the RFID tag 10 of the present embodiment. have. This will be explained using FIG. 15. As shown in (a), the RFID tag 10 of this embodiment is provided in the vicinity of the book 12 behind. The mounting position is mounted behind the cover 35 to improve the concealment of the RFID tag. In addition, a third antenna 34 is provided on the cover surface of the book. The cross-sectional view of C-C 'is shown in (b). The third antenna 34 is composed of a conductor, and the book is fixed by an adhesive or an adhesive. As the antenna material, general metal materials such as Al, Cu, and Ag are used. You may form by printing using electroconductive ink. As shown in (c), the RFID tag 10 and the third antenna 34 are arranged so that the ends of each antenna overlap. Although it is not necessary to make direct contact, as the distance between the two antennas decreases, the coupling becomes weaker, and the effect of the third antenna decreases. The angle formed by the antenna of the RFID tag 10 and the third antenna 34 may be any angle. In order to operate efficiently, the third antenna 34 and the reader antenna may be arranged in parallel. The RFID tag 10 and the third antenna 34 may be directly overlapped or integrated into a soft magnetic material as in the second embodiment.

(Impedance matching between antenna and IC chip)

A concrete example in which the slit for impedance matching is provided on the antenna 41 and the IC chip 3 is mounted in detail will be described in detail. Fig. 16 is a process chart showing the process of mounting the IC chip 3 on the power feeding portion of the antenna 41, (a) shows the feeding portion of the antenna 41 and the IC chip 2, and (b) shows the antenna. The perspective enlarged view of the power supply part when the IC chip 3 is mounted in (41) is shown, (c) has shown sectional drawing of the junction part of the antenna 41 and IC chip 3. As shown to FIG.

As shown in Fig. 16A, an L-shaped slit 43 for impedance matching between the IC chip 3 and the antenna 41 is formed at the feed portion of the antenna 41, and the slit ( A portion enclosed by an L-shaped slit in 43 is formed as the stub 41b. In addition, the signal input / output electrodes 3a and 3b are formed in the IC chip 3 at intervals beyond the slit 43.

That is, since the width of the slit 43 is a little narrower than the electrode spacing between the signal input / output electrodes 3a and 3b of the IC chip 3, the IC chip (a) as shown in FIG. When 3) is mounted, the signal input / output electrodes 3a and 3b of the IC chip 3 are connected to the antenna 41 so as to cross the slit 43. Thus, the stub 41b formed between the antenna 41 and the IC chip 3 is connected in series between the stub 41a formed by the formation of the solution slit 43. ) Acts as an inductance component connected in series. Therefore, the impedance of the antenna 41 and the IC chip 3 is matched (matched) by this inductance component. That is, the matching circuit is formed by the slit 43 and the stub 41b. As shown in Fig. 16 (c), the signal input / output electrodes 3a and 3b of the IC chip 3 are formed by a bonding method such as via an ultrasonic bonding, a metal eutectic bonding or an anisotropic conductive film (not shown). It is electrically connected with the antenna 41 by bump.

In addition, the slits formed in the antenna 41A can be formed in a T-shape instead of an L-shape. Fig. 16 (d) is a conceptual diagram in which the IC chip 3 is mounted on the power feeding portion of the T-shaped slit 43A in the antenna 41A. As shown in Fig. 12 (d), even when the slit 43A of the antenna 41A is formed in a T-shape, and the stubs 41c and 41d are connected in series between the IC chip 2 and the antenna 41A, they are L-shaped. The impedance of the antenna 41A and the IC chip 2 can be matched similarly to the case of the slit 43.

1 is a structural diagram of a tag antenna according to one embodiment of the present invention.

2 is a diagram illustrating a tag antenna structure of a conventional structure.

3 is a diagram illustrating a mounting position of an RFID tag in the first embodiment of the present invention.

4 is a diagram illustrating a communication range of an RFID tag in the first embodiment of the present invention.

5 is a diagram illustrating a relationship between a second antenna length and a communication distance.

6 is a diagram illustrating a relationship between a first antenna length and a communication distance.

Fig. 7 is a diagram showing an example of RFID tag application in the first embodiment of the present invention.

Fig. 8 is a diagram showing an RFID tag reading method in the first embodiment of the present invention.

9 is a diagram showing a second embodiment of the present invention.

It is a figure which shows the formation method of an antenna which is 2nd embodiment of this invention.

It is a figure which shows the cutting position of an antenna which is 2nd Embodiment of this invention.

It is a figure which shows the manufacturing process of RFID tag which is 2nd Embodiment of this invention.

FIG. 13 is a diagram of a tag antenna according to a third embodiment of the present invention. FIG.

Fig. 14 is a diagram of a tag antenna in the third embodiment of the present invention.

Fig. 15 is a diagram of a tag antenna in the third embodiment of the present invention.

Fig. 16 is an explanatory diagram for connecting an IC chip and an antenna.

** Explanation of reference numerals indicating major parts **

1, 1a, 1b, 1c: first antenna, 2, 2b, 2c: second antenna, 3: IC chip, 3a, 3b: connection pad, 4, 4a, 8, 43: slit, 5, 9: Base film, 6: RFID antenna, 7: Magnetic tag, 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h: Tag of the present invention, 11: Conventional tag, 12, 12a, 12b, 12c 12d, 12e, 12f, 12g, 12h: book, 13: communication range of tag 10 of Embodiment 1, 14: communication range of tag 11 of conventional structure, 15a, 15b, 15c: reader antenna, 16a, 16b: radial direction, 17: leader device, 21: soft magnetic material, 22: slit forming portion, 23: tag antenna of Embodiment 2, 24: slit forming step, 25: cutting step, 26: base film, 27 : Cover film, 28: Back side adhesion layer, 29: RFID tag of 2nd Embodiment, 30, 30A, 30B, 30C: Cutting position, 31a, 31b, 31c: Cutting surface, 32: IC chip mounting position, 33: Diamagnetic material , 34: third antenna, 35: cover, 36: shelf board, 41, 41A: antenna, (41b): stub, 43A: T-shaped slit, 50, 50a, 50b, 50c: duplicate fitting

Claims (15)

An RFID tag that wirelessly transmits information recorded on an IC chip. The IC chip, And an antenna connected to the IC chip and having at least a portion thereof magnetic. The method according to claim 1, The antenna, And a first antenna connected to the IC chip, and a second antenna having a magnetic material electrically connected to the first antenna. The method according to claim 2, And the first antenna is connected to an end portion of one side or both sides of the second antenna in the longitudinal direction. The method according to claim 2, And a small horseshoe of a semi-magnetic magnetic material is disposed on the second antenna. The method according to claim 2, When the wavelength of the operating frequency is λ, the total of the length of the first antenna and the second antenna is an integer multiple of λ / 2 of the electrical length. The method according to claim 5, When the wavelength of the operating frequency is λ, the first antenna has an electrical length of λ / 4 length or less RFID tag. The method according to claim 2, And the first antenna and the second antenna are electrically connected by overlapping each other or by electrostatic coupling via an adhesive material. The method according to claim 2, The first antenna has a matching circuit for performing impedance matching with the output of the IC chip, And said matching circuit is realized by a slit formed in said first antenna and a stub formed by said slit. The method according to claim 8, The slit is formed by the L-shaped or T-shaped, And the IC chip is mounted on the first antenna such that the terminals are separated by the slit.  The method according to claim 2, And a third antenna arranged to intersect with the longitudinal direction of the RFID tag. The method according to claim 10, And the third antenna crosses to an end of the second antenna. The method according to claim 10, And said third antenna has an operating length of?, Wherein the third antenna has an electrical length of an integer multiple of? / 2.  A slit forming process for forming slits in an antenna material made of soft magnetic material, a base film mounting process for mounting a base film, an IC chip mounting process for mounting an IC chip, a semi-magnetic material mounting process for mounting a semi-magnetic magnetic material, and a tag An RFID manufacturing method comprising an adhesive material mounting step of providing a mounting adhesive on the back surface, a protective film mounting step of installing a film protecting an IC chip, and a cutting step of separating a tag. The method according to claim 13, The slit forming process is a method of manufacturing an RFID tag, characterized in that to form a slit by punching. The method according to claim 13, In the cutting step, the distance from the slit end to the cutting position is made larger than the cutting position accuracy of the cutting device.

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