JP4593734B2 - Non-contact data carrier device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-contact type data carrier having a resin base material, an antenna, and an IC chip, and more particularly to a non-contact type data carrier device that does not operate before use.
[0002]
[Prior art]
Conventionally, non-contact type data carrier devices have been used in distribution systems and the like. Such a non-contact type data carrier device is used, for example, by being attached to a product packaging box or product itself via an adhesive.
[0003]
A non-contact type data carrier device generally includes a resin base material, a conductive antenna coil provided on the resin base material, and an IC chip connected to the antenna coil.
[0004]
When electromagnetic waves are emitted from the reader side to the non-contact type data carrier device, an induced voltage is generated in the antenna coil to operate the IC chip.
[0005]
[Problems to be solved by the invention]
The non-contact type data carrier device is used by being attached to the product packaging box or the product itself via an adhesive as described above, but noise electromagnetic waves are emitted before being attached to the non-contact type data carrier device. Then, the IC chip operates unnecessarily, and in some cases, the IC chip may be destroyed by noise electromagnetic waves. Further, it is necessary to change the capacity of the antenna coil and the IC chip based on the communication distance to the reader. In this case, many types of non-contact data carriers must be prepared, which is complicated.
[0006]
The present invention has been made in consideration of the above points, and provides a non-contact type data carrier device capable of changing the capability of the non-contact type data carrier without the IC chip operating before use. The purpose is to do.
[0007]
[Means for Solving the Problems]
The present invention is a non-contact type data carrier having a resin base, an antenna provided on the resin base, and an IC chip connected to the antenna, and attached to the non-contact type data carrier via an adhesive. A non-contact data carrier device comprising a release sheet, wherein the adhesive or release sheet has a conductive portion.
According to the present invention, even if a noise electromagnetic wave is emitted to the non-contact data carrier before use, an induced voltage is not generated in the antenna by the adhesive having the conductive portion or the release sheet. After peeling the release sheet from the non-contact type data carrier, the non-contact type data carrier is attached to the object. As a result, the capability of the non-contact data carrier can be made variable.
[0008]
The present invention includes a resin base material, an antenna provided on the resin base material, a non-contact data carrier having an IC chip connected to the antenna, and a plurality of release sheet bodies made of an adhesive and a release sheet. And a pressure-sensitive adhesive or release sheet of each release sheet body has a conductive portion.
According to the present invention, by separating a desired release sheet from a non-contact type data carrier, the ability of the non-contact type data carrier can be made variable by the conductive portion of the remaining release sheet.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are diagrams showing an embodiment of a contactless data carrier device according to the present invention.
[0010]
As shown in FIG. 1, the non-contact type data carrier device includes a non-contact type data carrier 10 and a release sheet 40 attached to the back surface of the non-contact type data carrier 10 via an adhesive 41.
Among these, the non-contact type data carrier 10 includes a rectangular resin base material 11 made of PET, and a conductive ink containing an etching of aluminum or a conductive filler using a photoresist layer over substantially the entire upper surface of the resin base material 11. It has the conductive antenna coil 13 formed by the printing used, and the IC chip 20 connected on the antenna coil 13.
[0011]
The IC chip 20 has an IC chip main body 20 a and bumps 22 provided on the bottom surface of the IC chip main body 20 a, and a surface (bottom surface) on the bump 22 side of the IC chip 20 is a circuit surface 23. The IC chip 20 is disposed on the antenna coil 13 with an insulating adhesive 14 in a state where the circuit surface 23 on the bump 22 side faces the antenna coil 13 and the bump 22 is in contact with the antenna coil 13. ing. In this case, the circuit surface 23 of the IC chip 20 is covered and protected by the insulating adhesive 14.
Instead of the antenna coil 13, an area transmission / reception type antenna 33 that is in contact with the bumps 22 of the IC chip 20 and configured by a pattern may be used (FIG. 4).
[0012]
Further, a metal reinforcing member 26 made of a metal plate is provided on the upper surface of the resin base material 11 in order to reinforce the strength when the IC chip 20 is heat-pressed to the antenna coil 13. The metal reinforcing member 26 is preferably formed at the same time when the antenna coil 13 is formed on the resin base material 11. For this reason, the metal reinforcing member 26 is made of aluminum or a conductive printed layer.
As shown in FIGS. 2 and 3, the pair of end portions of the antenna coil 13 are disposed inside and outside the antenna coil 13, respectively.
[0013]
Further, as shown in FIG. 1, a resin sealing layer 15 is provided so as to cover the IC chip 20, and this resin sealing layer 15 covers the entire outer periphery of the insulating adhesive 14 and the side and upper surfaces of the IC chip. Is provided.
[0014]
Next, the material and shape of each part of the non-contact data carrier will be described.
As the resin base material 11, for example, a plastic film such as polyester, polyethylene, polypropylene, and polyimide, paper, or non-woven fabric can be used. However, polyester and polyimide are mainly used from the viewpoint of chemical resistance and heat resistance. As the polyester, biaxially stretched polyester that has been heat-treated in advance is used.
[0015]
Normally, the shape of the antenna coil 13 is about 40 mm × 40 mm, but the antenna coil 13 may be formed in a card shape or the like depending on the intended use and required performance. Moreover, the thickness of the resin base material 11 is 30-200 micrometers.
[0016]
The antenna coil 13 is formed by etching and is made of aluminum or other general conductive metal such as Cu, Ag, Au, and a laminate thereof. Although the thickness of the antenna coil 13 is about 5 to 100 μm, it is preferably 15 to 30 μm from the viewpoint of cost and electrical characteristics. The antenna coil 13 may be formed by printing using a conductive filler and the thickness thereof may be 5 to 50 nm. In this case, Ag, carbon, or a mixture thereof can be considered as the conductive filler, and the specific resistance of the antenna coil 13 made of the conductive filler is 1 × 10 ⁻¹ Ω · cm to ¹ × 10 ⁻⁶ Ω · cm.
Further, the IC chip body 20a of the IC chip 20 has a size of 1.5 mm × 1.5 mm square and a thickness of about 180 μm.
The metal reinforcing member 26 is made of aluminum, but another metal member may be used.
[0017]
The insulating adhesive 14 may be selected from various thermoplastic resins in addition to those using a thermosetting resin such as epoxy, acrylic, urethane, etc. as a base polymer.
In addition, the protective effect is further enhanced by concealing with a colorant.
[0018]
Next, the resin sealing layer 15 will be described. The resin sealing layer 15 can be made of an ionizing radiation curable resin, and the resin sealing layer 15 can be made of a visible light curable resin, a thermosetting resin, or a two-component curable resin.
[0019]
In addition, the resin sealing layer 15 may be formed by printing, or may be formed by application by tip spence.
[0020]
Next, the adhesive 41 and the release sheet 40 will be described. As the adhesive 41, for example, an acrylic resin is used. Further, the release sheet 40 has a rectangular shape like the resin base 11 and is made of, for example, a conductive polymer and has a conductive portion as a whole.
[0021]
Next, the use of a non-contact type data carrier device will be described. First, since the conductive release sheet 40 is attached to the non-contact type data carrier 10 and this release sheet 40 covers the entire area of the antenna coil 13, even if noise electromagnetic waves are emitted from the outside, this conductive The induced release sheet 40 does not generate an induced voltage in the antenna coil 13. For this reason, the IC chip 20 does not operate unnecessarily before use.
[0022]
Next, the release sheet 40 is peeled off, and the non-contact type data carrier 10 is attached to the object (product) A with the adhesive 41. Thereafter, a desired electromagnetic wave is emitted from a reader (not shown) to the non-contact type data carrier 10, whereby an induced voltage is generated in the antenna coil 13, and the IC chip 20 can be appropriately operated.
As described above, according to the present embodiment, the IC chip 20 is not unnecessarily operated by noise electromagnetic waves before the conductive release sheet 40 is peeled from the non-contact type data carrier 10. Is not damaged by noise electromagnetic waves.
[0023]
Next, a modification of the present invention will be described with reference to FIGS. Although the example which comprised the release sheet 40 from the conductive polymer in FIG. 1 was shown, it does not restrict to this, As shown in FIG. 5, the release layer 42 which consists of the silicone resin by the side of the non-contact-type data carrier 10 as shown in FIG. And a conductive release substrate 43 made of a metal sheet or a conductive polymer.
[0024]
Moreover, as shown in FIG. 6, the peeling base material 43 of the peeling sheet 40 is made of a base material layer 43a made of paper or plastic, a conductive layer 43b made of a metal sheet, and between the base material layer 43a and the conductive layer 43b. It is good also as a 3 layer structure which consists of the contact bonding layer 43c.
[0025]
Further, as shown in FIG. 7, the release substrate 43 of the release sheet 40 may have a two-layer configuration including a base layer 43a made of paper or plastic and a conductive paste print layer 43d.
[0026]
Next, another modification of the present invention will be described with reference to FIGS. In the modification shown in FIGS. 8A and 8B, a notch 45 is provided in the release sheet 40 composed of the release layer 42 and the conductive release base material 43, and the release sheet 40 is divided into two regions by the notch 45. It's free.
[0027]
8A and 8B, only one release sheet 40 is peeled off from the non-contact data carrier 10 with the notch 45 as a boundary, so that the other release sheet 40 remains on the non-contact data carrier 10 side. The antenna coil 13 can be partially covered. For this reason, when electromagnetic waves are emitted from the reader, the induced power generated in the antenna coil 13 can be kept small, and accordingly, the communication capability of the non-contact data carrier 10 can be made variable as desired. .
In addition, the cuts 45 may be formed in an elliptical shape in the release sheet 40 (FIG. 9A). Further, the notch 45 may be provided so as to equally divide the release sheet 40 into four rectangular shapes (FIG. 9B), or the notch 45 may be provided so as to be divided into four triangles (FIG. 9C). .
[0028]
Furthermore, you may provide the notch 45 so that the peeling sheet 40 can be divided | segmented into 2 parts, 4 parts, or 8 parts (FIG. 10 (a) (b)). 10 (a) and 10 (b), the ability of the non-contact data carrier 10 can be adjusted with higher accuracy by forming the cut 45 so that the release sheet 40 can be divided into two, four or eight. Can do.
[0029]
Next, another modification of the present invention will be described with reference to FIG. As shown in FIG. 11, a plurality of, for example, three layers, release sheet bodies 40, 41 including an adhesive 41 and a release sheet 40 are laminated on the non-contact data carrier 10. The pressure-sensitive adhesive 41 of each release sheet body 40, 41 has a conductive portion 41a, and the release sheet 40 is made of a plastic base material having no conductivity.
Moreover, the electroconductive part 41a provided in the adhesive 41 of each peeling sheet 40 and 41 has shifted | deviated mutually on the plane.
[0030]
In FIG. 11, before use, the non-contact data carrier 10 is covered with the conductive portions 41a of the respective adhesives 41 over the entire area.
For example, by peeling the release sheet 40 of the second-stage release sheet body from the bottom, it is possible to cover only 2/3 of the non-contact type data carrier 10 with the conductive portion 41a of the remaining adhesive 41. Further, by peeling the release sheet 40 of the uppermost release sheet body, only 1/3 of the non-contact type data carrier 10 can be covered with the remaining conductive portion 41a of the adhesive 41.
[0031]
In the embodiment shown in FIG. 1 to FIG. 10, an example in which a conductive portion is provided in the release sheet 40 and a conductive portion is provided in the adhesive 41 in the embodiment shown in FIG. 11 is shown. Also in this form, it is possible to provide a conductive portion on either the release sheet 40 or the pressure-sensitive adhesive 41.
[0032]
Next, specific examples of the present invention will be described.
Example 1
1) A 38 μm thick transparent biaxially stretched polyester film (resin substrate 11) and 30 μm aluminum foil were laminated by dry lamination to prepare an antenna sheet material.
2) A coiled pattern was formed by gravure printing using a resist ink having a thermoplastic resin as a binder on the aluminum surface. The antenna coil 13 was provided on the resin substrate 11 by etching only the aluminum portion using sodium hydroxide as an etchant.
3) The IC chip 20 was mounted on the antenna coil 13.
4) Separately, a 25 μm thick transparent biaxially stretched polyester film and 15 μm copper foil were dry-laminated to prepare a release sheet 40.
5) The resin base material 11 and the antenna coil 13 produced above and the release sheet 40 were laminated by gravure coating through the adhesive 41, and a cut 45 was made in the release sheet 40.
6) When the release sheet 40 was not peeled off, the non-contact data carrier 10 did not react to the reader and operated by peeling off the release sheet 40.
7) Further, it is possible to reduce the communication distance as compared to the case where the release sheet 40 with the cuts 45 is peeled off by half and compared with the case where the release sheet 40 is completely peeled off.
[0033]
Example 2
1) An antenna sheet material was prepared by laminating 38 μm thick transparent biaxially stretched polyester film, a resin substrate 11 and 30 μm aluminum foil by dry lamination.
2) A coiled pattern was formed by gravure printing using a resist ink having a thermoplastic resin as a binder on the aluminum surface. The antenna coil 13 was provided on the resin substrate 11 by etching only the aluminum portion using sodium hydroxide as an etchant.
3) The IC chip 20 was mounted on the antenna coil 13.
4) Separately, a 25 μm thick transparent biaxially stretched polyester film was gravure coated with a conductive polymer (polyaniline) to obtain a release sheet 40.
5) The resin base material 11 and the antenna coil 13 produced above and the release sheet 40 were laminated by gravure coating through the adhesive 41, and a cut 45 was made in the release sheet 40 to enable multi-division.
6) When the release sheet 40 was not peeled off, the non-contact data carrier 10 did not react to the reader and operated by peeling off the release sheet 40.
7) When the peelable area 40 is changed by sequentially peeling the possibly split release sheet 40 with the cuts 45, the communication distance changes following the peelable area, which can easily change the communication distance. It has become possible.
[0034]
【The invention's effect】
As described above, according to the present invention, the IC chip does not operate before use, and the capacity and capability of the non-contact data carrier can be made variable as desired.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a contactless data carrier device according to the present invention.
FIG. 2 is a plan view of a non-contact data carrier device according to the present invention.
FIG. 3 is an enlarged view of a non-contact data carrier device.
FIG. 4 is a diagram showing an area receiving / transmitting antenna;
FIG. 5 is a block diagram showing a modification of the non-contact type data carrier device according to the present invention.
FIG. 6 is a block diagram showing a modification of the non-contact type data carrier device according to the present invention.
FIG. 7 is a block diagram showing a modification of the non-contact type data carrier device according to the present invention.
FIG. 8 is a view showing a non-contact data carrier device in which a release sheet can be divided.
FIG. 9 is a view showing a non-contact data carrier device in which a release sheet can be divided.
FIG. 10 is a view showing a non-contact data carrier device in which a release sheet can be divided.
FIG. 11 is a view showing a non-contact type data carrier device in which release sheets are provided in multiple stages.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Non-contact-type data carrier 11 Resin base material 13 Antenna coil 40 Release sheet 41 Adhesive 42 Release layer 43 Release base material 45 Cutting

Claims (4)

A non-contact data carrier having a resin base material, an antenna provided on the resin base material, and an IC chip connected to the antenna;
A release sheet attached to the non-contact data carrier via an adhesive,
Release sheet have a conductive portion,
A release sheet having a conductive portion is provided with a notch for dividing the release sheet into a plurality of regions, one region of the release sheet is peeled off from the non-contact type data carrier, and the other region of the release sheet is contactless. A non-contact type data carrier device characterized in that the antenna is partially covered by the other region of the release sheet by leaving it on the type data carrier.   2. The non-contact type data carrier device according to claim 1, wherein the release sheet comprises a release layer on the non-contact type data carrier side and a release substrate laminated on the release layer and having a conductive portion.   The non-contact type data carrier device according to claim 2, wherein the peeling substrate having the conductive portion has a multilayer structure including a conductive layer. A non-contact data carrier having a resin base material, an antenna provided on the resin base material, and an IC chip connected to the antenna;
It is attached to a non-contact type data carrier and includes a plurality of release sheet bodies composed of an adhesive and a release sheet,
Each release sheet body is laminated with each other such that the release sheet faces outward,
The adhesive or release sheet of each release sheet body has a conductive portion,
The conductive portions of the release sheet bodies are shifted from each other on the plane, and the release sheet of the desired release sheet body is peeled from the non-contact type data carrier side, so that the antenna by the remaining conductive portion of the release sheet body A non-contact type data carrier device characterized by partially covering the surface.

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