JP2013131121A - Ic tag label with mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC tag label that can facilitate inspection and issuance by having long-range communication characteristics even in a state of being a label and a sheet not attached to an object article such as an optical medium.SOLUTION: An IC tag label includes an IC tag where an IC chip and a matching circuit electrically connected to the IC chip are formed on a substrate, and a releasing mount laminated on the IC tag. A conductive layer pattern is formed on a releasing sheet, and functions as an antenna for the IC tag.

Description

  The present invention relates to an IC tag used as an RFID for an optical recording medium such as a CD or a DVD, and a manufacturing method thereof.

  In recent years, a radio frequency identification (RFID) system has been used to improve the efficiency of production management, logistics management, and the like. In the RFID system, an IC tag is attached to a target to be managed. The tag information is read and rewritten as appropriate through a reader / writer that transmits and receives radio waves to and from the IC tag. As a result, in various production and distribution situations, producers and distributors can manage target specific information and inventory information.

  The components of such an IC tag can be broadly divided into antenna elements that transmit and receive information and IC chips that are circuits that store and process information.

  The antenna element has a role of transmitting a signal to the IC chip. In the case of a tag (passive tag) that does not include a power source, power is generated from a radio signal received by an antenna element, and the IC chip is operated by supplying the power to the IC chip.

  In particular, IC tags used in RFID systems are often passive tags. Therefore, the antenna element is closely designed in shape and size in consideration of the relationship with the frequency band (wavelength) of the radio wave used, and the quality is maintained.

  Here, depending on the target, there is a case where an IC tag has to be stuck in a relatively small area. In that case, since the antenna element must be designed in a limited area, it may be difficult to greatly improve the communication characteristics (communication distance, etc.) of the IC tag.

  For example, when an IC tag is affixed to an optical recording medium (hereinafter referred to as an optical medium) such as a CD, DVD, or BD, the IC tag including the antenna element must be contained within a limited range around the central hole of the optical medium. There is a case. Generally, the inner diameter of a conventional CD metal layer is about 38 mm, but recently, the inner diameter of a CD, DVD, or BD metal layer is often designed to be about 22 to 25 mm. The outer diameter of the central hole of the optical medium is about 15 mm. Therefore, when the IC tag must be attached within a limited range from the outer diameter of the central hole to the inner diameter of the metal layer, the shape of the antenna element is inevitably small. When radio waves are transmitted / received using only such a small antenna element, the communication distance may be about 10 to 30 cm depending on the output value of the reader / writer and the operating environment. In this case, the reader / writer can be arranged. The distance is greatly limited.

  Therefore, for example, Patent Document 1 discloses a technique for extending a communication distance by installing a booster antenna in a case of an optical medium such as a CD or a DVD. Patent Document 2 discloses a technique for extending a communication distance by using a metal of a reflection layer of optical media for an antenna.

  However, in Patent Documents 1 and 2 above, the communication distance is short as described above before the IC tag is attached to the medium. Therefore, when the tag information is read or rewritten, the printer or inspection device of the existing equipment is used. There has been a problem in that there is a case where it is impossible to do so, and there is a case where it is accompanied by a burden such as an operation of bringing a target close to the reader / writer one by one.

JP 2008-254759 A JP 2007-166573 A

  Therefore, in the present invention, an IC tag label attached to an optical medium such as a CD, a DVD, or a BD, or a metal article has a long-distance communication characteristic even in a label or sheet state that is not attached to the target article. Thus, an IC tag label that can be easily inspected and issued is provided.

The invention according to claim 1, which has been made to solve the above-described problems, includes an IC tag in which an IC chip and a first conductive layer pattern electrically connected to the IC chip are formed on a substrate, and An IC tag label with a mount, comprising a release mount laminated on the IC tag, wherein the release mount is formed with a second conductive layer pattern and functions as an antenna of the IC tag.
The invention according to claim 2 is the IC tag label with mount according to claim 1, wherein the second conductive layer pattern is formed in a straight line.
The invention according to claim 3 is characterized in that the second conductive layer pattern is arranged so that a high-frequency current is induced by electromagnetic coupling with the first conductive layer pattern. The IC tag label set according to 1 or 2.
The invention according to claim 4 is characterized in that the distance between the first conductive layer pattern and the second conductive layer pattern is 15 mm or less, and the IC with mount according to any one of claims 1 to 3 It is a tag label.
In the invention according to claim 5, a plurality of IC tags are formed on the substrate, and the second conductive layer pattern that functions as a common antenna is formed on at least two IC tags. 5. The IC tag label with mount according to any one of claims 1 to 4, wherein the IC tag label has a mount.
Moreover, the invention which concerns on Claim 6 is that the said base material and mold release mount are elongate, and said 2nd conductive layer pattern is continuously formed linearly with respect to the elongate direction. 6. An IC tag label with a mount according to claim 5,

  The IC tag label set according to the present invention includes a conductive layer pattern electrically connected to an IC chip so as to ensure optimum communication characteristics in a state of being attached to a target article, and a second conductive layer pattern ( By providing the auxiliary antenna), it is possible to ensure the communication characteristics of the IC tag label even in a state of being attached to the target article and a state of being laminated on the mount before being attached.

  Further, since the auxiliary antenna can be used in common for a plurality of IC tags, the communication characteristics can be improved even for a roll-shaped IC tag label in which a plurality of IC tags are attached.

It is a perspective schematic diagram which shows one Embodiment of the IC tag label with a mount based on this invention. It is a cross-sectional schematic diagram of the IC tag label with mount of FIG. It is a schematic diagram which shows one Embodiment of the optical disk which affixed the IC tag label which concerns on this invention. It is a schematic diagram which shows embodiment of the conductive layer pattern of the IC tag label which concerns on this invention. It is a schematic diagram which shows arrangement | positioning of the IC tag and auxiliary antenna which concern on this invention. It is a schematic diagram which shows arrangement | positioning of the IC tag and auxiliary antenna which concern on this invention. It is a schematic diagram which shows one Embodiment of the auxiliary antenna which concerns on this invention. It is a schematic diagram which shows one Embodiment of the IC tag label sheet which concerns on this invention. It is a schematic diagram which shows one Embodiment of the IC tag label sheet which concerns on this invention.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic perspective view showing an embodiment of an IC tag label with a mount according to the present invention.
The IC tag label set 100 of the present invention is formed by laminating an IC tag label main body 11 to be attached to an article and a mount 12 including a release substrate 16. The IC tag label main body includes an IC chip 14 formed on the substrate 13 and a conductive layer pattern 15 electrically connected to the IC chip. The conductive layer pattern has an antenna function, a matching circuit function, and the like so as to enable non-contact communication when pasted on a medium. An auxiliary antenna 14 made of a conductive layer pattern is formed on the mount side. The auxiliary antenna on the mount side is electrically coupled to the conductive layer pattern 12 of the IC tag in a non-contact manner, and the communication distance can be improved.

  FIG. 2 is a schematic cross-sectional view at S of the IC tag label with mount 100 according to the present invention of FIG. On the IC tag label main body 11 side, an adhesive layer 18 for adhering to a medium is provided on at least one surface of the substrate 13. An IC chip 14 and a conductive layer pattern 15 are formed on the substrate. In the present embodiment, the IC chip and the conductive layer pattern are protected by sandwiching the IC chip and the conductive layer pattern between two layers of the base material. However, the present invention is not limited to this, and it may be formed on a single layer substrate. As the base material, various plastic films such as PET (polyethylene terephthalate) and PC (polycarbonate), paper, and the like can be preferably used, but are not limited thereto.

  In the present embodiment, a case where the IC chip 14 and the conductive layer pattern 15 are directly connected and the IC chip and the conductive layer pattern are electrically connected will be described. The conductive layer pattern can be designed to function as a non-contact IC tag when attached to the target article. For example, in an optical disk such as a CD and a DVD, the IC tag label body 11 is disposed around the central hole 21 of the optical disk 20 as shown in FIG. The optical disc includes a metal layer that is a reflective layer, and the IC tag and the metal layer are electromagnetically coupled, and the metal layer functions as an antenna. For this reason, compared with the communication distance before sticking, a communication distance can be extended largely.

  The shape of the conductive layer pattern 15 is not limited to the shape as shown in FIG. As shown in FIGS. 4B to 4F, the antenna may be formed with other geometric patterns such as a square, a triangle, an ellipse, etc., as long as it is an antenna that exhibits a communication function when attached to a target article. . One or a plurality of antenna configurations may be used, and the loop may not be completely closed. As shown in FIG.4 (b), it may be a double circle and the shape which divides | segments the inner division into some may be sufficient. Further, it may be formed of a combination of a geometric pattern and a geometric pattern, a geometric pattern and a curved portion, or a curved portion and a curved portion. Further, as shown in FIG. 4C, by forming a portion on the protrusion on the outer periphery of the circle, it is electromagnetically coupled to the metal layer of the optical media 24 such as CD, DVD, BD, etc., thereby improving the communication characteristics. It may be configured. Further, not a loop antenna but a dipole antenna as shown in FIG. In the IC tag label of the present invention, the conductive layer pattern for matching impedance at the communication frequency functions as a matching circuit. That is, the impedance can be adjusted depending on the shape of the conductive layer pattern.

  The conductive layer pattern 15 is made of a conductive material such as metal. For example, general metal pattern formation such as etching of metal foil, pattern plating, wiring of metal wire such as enameled copper wire, various printing methods such as screen printing, etc. It can be formed by a method.

  The IC chip 14 can record information on the target article to be pasted. For example, when the target article is an optical medium, information such as the manufacturing date, manufacturing number, and price of the target optical medium can be recorded on the IC chip.

  An adhesive layer 18 may be formed on one side of the IC tag label body 11 and an adhesive layer may be formed on the other side, or a protective layer, a printing layer, a shielding layer, etc. may be appropriately provided on the other side. good.

  The contact surface of the mount 12 with the adhesive layer 18 is provided with a release layer so as to have release properties. Alternatively, it is preferable to use a releasable base material for the mount base material 16. As the mount base material, various plastic films such as PET (polyethylene terephthalate) and PC (polycarbonate), paper, and the like can be suitably used, but are not limited thereto.

  Further, an auxiliary antenna 17 is formed on the mount. The auxiliary antenna may be formed on any surface of the mount, but it is preferable in terms of the manufacturing process to be provided on the surface opposite to the surface having releasability, that is, on the side not in contact with the IC tag label main body. If the surface does not have releasability, the auxiliary antenna can be formed directly on the mount by a printing method or the like.

FIG. 5 is a schematic diagram showing the arrangement of the IC tag (the IC chip 14 and the conductive layer pattern 15 connected to the IC chip) and the auxiliary antenna 17. 5A and 5B, a linear auxiliary antenna is arranged so as to pass through the center of the IC tag.

  The arrows in FIG. 5 indicate the direction in which the current in the IC tag flows during communication. In FIG. 5A, the extension direction of the auxiliary antenna is parallel to the arrow. In FIG. The extending direction of is orthogonal to the arrow. As shown in the embodiment, it is preferable from the viewpoint of communication distance to arrange the auxiliary antenna so as to coincide with the polarization plane of the IC tag.

  The extension length of the auxiliary antenna 17 is optimally about half the wavelength λ of the communication frequency. This is, for example, 150 mm at a communication frequency of 953 MHz.

  Further, the shape of the auxiliary antenna 17 is not limited to a linear shape. For example, as shown in FIG. 7, it is good also as a pattern which refracted the edge part. It is possible to secure an effective length for space saving.

  Further, the auxiliary antenna 17 may be shifted from the position of the IC tag as shown in FIG. If the auxiliary antenna is arranged so as not to overlap the IC tag, the auxiliary antenna can be cut and shipped so as not to be included in the IC tag label. The communication characteristics deteriorate as the auxiliary antenna moves away from the conductive layer pattern, and is preferably 15 mm or less. Further, a plurality of auxiliary antennas may be arranged as shown in FIG.

  The auxiliary antenna 17 is made of a conductive material such as metal and can be formed by a metal pattern forming method such as various printing methods such as screen printing, flexographic printing, and gravure printing.

  The auxiliary antenna 17 functions as an antenna for the IC tag with respect to the IC tag label 11 laminated on the mount 12. Therefore, even with an IC tag label, the communication distance is short, and even with an IC tag label whose communication characteristics are optimized while attached to a target article, the communication characteristics can be secured by the auxiliary antenna.

  Further, FIG. 8 is a schematic view of an IC tag label sheet in which IC tags are multifaceted on a sheet of one substrate. In the embodiment of FIG. 8, a common linear auxiliary antenna 17 is formed and arranged on the mount side sheet for each of a plurality of IC tags that are multifaceted at equal intervals. That is, the auxiliary antenna is formed in parallel with the longitudinal direction of the IC tag label sheet. This auxiliary antenna functions as an antenna for each IC tag.

  According to the IC tag label sheet of the present invention, communication is possible in the state of a sheet in which IC tags are multi-faced on one substrate, so that inspection can also be performed at the RtoR manufacturing stage. In addition, since the auxiliary antenna is formed in parallel with the longitudinal direction of the IC tag label sheet, the auxiliary antenna can be formed to be extended by the number of multi-sided IC tags. It is possible to ensure the length to be performed. That is, as described above, since the auxiliary antenna preferably has a certain length or more, it is preferably formed as an auxiliary antenna common to at least two or more IC tags. Moreover, as long as it is linear, the conductive layer pattern of the auxiliary antenna may not be discontinuous, and may be continuously extended along the length direction of the sheet. Since the auxiliary antenna is formed without interruption to the IC tag at any position, a stable communication distance (communication characteristics) can be ensured.

  Further, as shown in FIG. 9, the auxiliary antenna 17 may be arranged on each IC tag by forming a plurality of auxiliary antennas on the mount so as to be orthogonal to the longitudinal direction of the IC tag label sheet. When the sheet width is short, the auxiliary antenna may be deformed and stretched as shown in FIG.

  Further, the IC tag label main body sheet may be provided with easy peeling means such as a half cut for each IC tag label so that each IC tag label can be easily peeled off. When used only in the inspection process, as described above, it may be cut and shipped as an IC tag label that does not include an auxiliary antenna.

  The IC tag label set according to the present invention includes a matching circuit that is impedance matched so as to ensure optimum communication characteristics in a state of being attached to the target article, and is provided with an auxiliary antenna on the mount so that the IC tag label set is attached to the target article. Communication characteristics can be ensured even in a state of being worn and in a state of being laminated on a mount before sticking. In particular, when the target article itself functions as an antenna, the IC tag label can be formed in a very small space according to the present invention, which is suitable for optical media such as CD, DVD, and BD.

  The IC tag label according to the present invention can be attached to a target article and used for management of the target article. For example, logistics management, sales management, shoplifting prevention. It can also be used to manage confidential information such as personal information.

An embodiment of the present invention will be described below.
<Production of IC tag label body>
A conductive layer pattern 15 as shown in FIG. 4A was formed on a long sheet of PET film having a thickness of 50 μm by etching an aluminum foil. The conductive layer pattern was formed for a plurality of IC tags in one sheet as shown in FIG. The IC tag had a diameter of 48 mm and the pitch between the IC tags was 60 mm. Next, an IC chip was mounted on the conductive layer pattern to form an IC tag. Further, an upper paper having a thickness of 50 μm was laminated on the IC tag through an adhesive layer. Finally, an adhesive layer was formed on one PET film to produce a multifaceted IC tag label body.

<Preparation of mount>
An auxiliary antenna was formed on the back surface (the surface on which the release layer was not formed) of a release paper having a thickness of 80 μm and a width of 86 mm. The auxiliary antenna was printed as a conductive pattern having a thickness of about 2 μm by printing by screen printing using conductive ink (manufactured by Toyo Ink) using silver nanoparticles and baking. Since the arrangement of the conductive pattern differs in each embodiment, it will be described for each embodiment.

<Production of IC tag label with mount>
After stacking the produced IC tag label and mount so that the straight line of the auxiliary antenna passes through the center of the IC tag, each IC tag is half-cut with a laser so that each IC tag label can be easily peeled off from the mount. A set was made.

[Example 1]
Samples of the conductive pattern of the auxiliary antenna, which are extended in the center of the release paper to the length of two IC tags (= 120mm) and the length of three IC tags (= 120mm) in a straight line, respectively 1. Sample 2 was formed. For comparison, a sample (comparative sample 1) as an IC tag label (that is, without an auxiliary antenna) peeled off from the mount and a sample peeled off the mount and pasted at a predetermined position on the CD as shown in FIG. Sample 2) was prepared.

<Evaluation>
A 953 MHz circularly polarized signal was output toward the IC tag label set, IC tag reading measurement was performed, a communication distance in terms of 1 W output was calculated, and used for evaluation of communication characteristics. In each of the above embodiments, the conductive pattern of the IC tag is arranged so that the polarization plane of the IC tag coincides with the auxiliary antenna. The measurement results are shown in Table 1.

  As shown in the results of Table 1, it can be seen that the communication distance is significantly increased by providing the auxiliary antenna on the mount. The communication characteristic is better in the case of the length of the auxiliary antenna for three IC tag labels (Example 2) than in the case of the length of the auxiliary antenna for two IC tag labels (Example 2). In addition, when there was no auxiliary antenna (Comparative Example 1), it was not possible to secure a communicable communication distance. A certain amount of communication is possible with the IC tag label attached to the optical medium.

[Example 2]
The IC tag label set (sample 3) is arranged such that the extension direction of the auxiliary antenna coincides with the polarization of the IC tag as shown in FIG. The communication characteristics of the IC tag label set (sample 4) arranged so that the extending direction of the auxiliary antenna is orthogonal to the polarization of the IC tag as described above were evaluated in the same manner as in Example 1. The measurement results are shown in Table 2.

  As shown in the results of Table 2, when the auxiliary antenna is arranged so that the extension direction of the auxiliary antenna coincides with the polarization of the IC tag, the auxiliary antenna is arranged so that the extension direction of the auxiliary antenna is orthogonal to the polarization of the IC tag. It can be seen that the communication characteristics (communication distance) are better than the case.

[Example 3]
The auxiliary antenna was shifted from the center of the IC tag, and the distance d from the end of the conductive layer pattern to the auxiliary antenna was 0 mm (circumscribed to the conductive layer pattern), and 5 mm and 10 mm were prepared as Sample 5, Sample 6, and Sample 7, respectively. These were evaluated in the same manner as in Example 1. Table 3 shows the measurement results.

  As shown in Table 3, the communication distance decreases as the auxiliary antenna moves away from the conductive pattern, but it can be seen that communication is possible even if the auxiliary antenna is far away from the IC tag.

100 .. IC tag label with mount 11 ... IC tag label main body 12 ... mount 13 ... substrate 14 ... IC chip 15 ... conductive layer pattern 16 ... mount substrate 17 ... auxiliary antenna

Claims (6)

An IC tag in which an IC chip and a first conductive layer pattern electrically connected to the IC chip are formed on a substrate, and a release mount laminated on the IC tag,
An IC tag label with mount, wherein a second conductive layer pattern is formed on the release mount and functions as an antenna of the IC tag.   2. The IC tag label with mount according to claim 1, wherein the second conductive layer pattern is formed in a straight line.   The second conductive layer pattern is disposed so that a high-frequency current is induced by electromagnetic coupling with the first conductive layer pattern. The IC tag label with the mount according to 1 or 2.   The IC tag label with a mount according to any one of claims 1 to 3, wherein a distance between the first conductive layer pattern and the second conductive layer pattern is 15 mm or less.   2. A plurality of IC tags are formed on the substrate, and the second conductive layer pattern that functions as a common antenna is formed for at least two or more IC tags. The IC tag label with mount as described in any one of 4 thru | or 4.   The said base material and a mold release mount are elongate, and said 2nd conductive layer pattern is continuously formed in linear form with respect to the elongate direction. IC tag label with mount.