JPH1131206A - Resonance label and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the circuit pattern reduction and cost reduction of a resonance label, to reduce process loss accompanying process reduction, to attain the mass production and high speed processing of a product, and to extend a practical range or applicable range. SOLUTION: This is a method for manufacturing a resonance label 1. At first, a mount 2 such as a polyester film or a polyimide film, synthetic paper, and paper is prepared, a conductor film 3 is adhesion-formed on the mount 2 by adhesion, screen printing, photographic method, and evaporation. Next, an unnecessary part is etching-removed by etching processing solution by leaving the prescribed conductor pattern of the conductor film 3, and etching working for forming an electrode board pattern constituting a capacitance element and a spiral pattern constituting an inductance element is carried out. Then, a pair of electrode board pattern and spiral pattern are polymerized so as to be faced through a dielectric layer to each other, and this pair of electrode board pattern and spiral pattern polymerized so as to be faced to each other are connected by heat press or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resonance label used for identification management using an automatic identification card or the like, a card authenticity chuck for use in a prepaid card, a pachinko card, or the like, and various other security systems and the like. It is about the method.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing this kind of resonance label, for example, as disclosed in JP-A-8-44964, (1) a step of releasably attaching a conductive foil to a mount. (2) a step of laminating a dielectric on the conductor foil attached to the mount, (3) a step of forming a pair of spiral patterns by half-die cutting the conductor foil on which the dielectric is laminated,
(4) a step of removing unnecessary portions of the conductor foil on which a pair of spiral patterns are formed, (5) a step of counter-polymerizing via the pair of conductor foils from which the unnecessary portions have been removed, and (6) a pair of opposed conductor foils Is manufactured through a step of combining the two.

[0003] Through these steps, an inductance element formed by a spiral pattern of aluminum foil and a polyethylene thin film as a dielectric sandwiched between a pair of electrode plates of the spiral pattern are formed. An LC resonance circuit is constituted by the capacitance element.

At this time, a pair of spiral patterns superposed face-to-face via a polyethylene thin film serving as a dielectric also constitutes a capacitance element in a distributed capacity. And LC
The inherent resonance frequency of the resonant circuit is determined by the total number of spirals of the spiral conductive foil as an inductance element and the dielectric constant and thickness of the dielectric as a capacitance element sandwiched between a pair of conductive foils. And has a fixed resonance frequency based on the pattern set with the resonance label. And for example, prepaid cards,
When used in a pachinko card or the like, the resonance label is concealed and installed in the card, and the authenticity check of the card is checked in a single reception mode by an ID scanner or the like prepared in advance.

[0005]

However, according to the conventional method for manufacturing a resonant label, as described above, the step (3) of forming a pair of spiral patterns by half-die cutting the conductive foil on which the dielectric is laminated, (4) The process is for removing unnecessary portions of the conductor foil having the pair of spiral patterns formed thereon.
High-speed processing has become impossible, and the yield has been reduced.
Further, conventionally, there is a limit in reducing the size of the circuit itself, and there has been a problem that the size of the resonance label itself cannot be reduced and the cost increases.

Accordingly, the present invention has been made in view of the above-mentioned problems which have been encountered in the past, and has been made to reduce the circuit pattern and cost, and to reduce the process loss associated with the process reduction. Enables mass production and high-speed processing of products,
An object of the present invention is to provide a resonance label that can be used in place of a conventional barcode and a method of manufacturing the same.

[0007]

According to the present invention, there is provided, in the present invention, an inductance element formed of a spiral conductive film 3, an electrode plate 6 formed at the other end of the inductance element, and an electrode plate 6 formed at the other end of the inductance element. And a capacitance element comprising the dielectric layers 4 sandwiched between the resonance labels, the resonance label 1 having an LC resonance circuit that resonates with an electromagnetic wave of a specific frequency and oscillates an echo wave to constitute the capacitance element. The spiral pattern constituting the electrode plate 6 and the inductance element is formed by etching processing means for removing unnecessary portions of the conductive film 3 previously deposited on the mount 2 while leaving a predetermined conductive pattern. This has solved the problem described above.

In addition, the above-mentioned problem has been solved by using the backing sheet 2 as a base material which is not affected by an etching process using any of a polyester film or a polyimide film, synthetic paper and paper.

The above-mentioned problem has been solved by making the conductive film 3 from any one of aluminum foil, copper foil, gold foil and silver foil.

Further, the conductive film 3 is formed on the mount by any one of a sticking means, a screen printing means, a photographing means and a vapor deposition means using a thermosetting adhesive which is not affected by the etching treatment. Thus, the above-described problem has been solved.

As a method of manufacturing the resonance label 1,
(1) a process of preparing a mount 2 such as a polyester film or a polyimide film, synthetic paper, paper, etc., and (2) a process of attaching a conductive film on the mount 2 and forming it by any one of screen printing, photographic method, and vapor deposition. (3) Etching to remove unnecessary portions of the conductive film 3 with an etching solution while leaving a predetermined conductive pattern, thereby forming an electrode plate pattern forming a capacitance element and a spiral pattern forming an inductance element. Processing process,
(4) a step of opposingly polymerizing a pair of electrode plate patterns and a spiral pattern via the dielectric layer 4; and (5) a step of combining the pair of electrode plate patterns and the spiral pattern that have been counter-polymerized by a heat press or the like. This has solved the above-mentioned problem.

In the resonance label and the method of manufacturing the same according to the present invention, an aluminum foil, a copper foil, a gold foil, and a silver foil which are laminated and adhered on a mount 2 such as a polyester film or a polyimide film, synthetic paper, or paper by etching means. Unnecessary portions of the conductor film 3 such as are properly removed, and an electrode plate pattern,
Each of the spiral patterns is precisely formed to a reduced size. For example, since the resonance label 1 can be reduced to a size of about 1 cm square or less and the thickness of the conductor film 3 is expanded to about 5 to 50 μm, for example, within the range of maintaining conductivity, the circuit pattern The size can be formed into various sizes and patterns according to multipurpose use, and a circuit pattern with low resistance can be realized.

Thus, when used for an automatic identification card, a prepaid card, a pachinko card, or the like, in addition to a single LC resonance circuit, a plurality of LC resonance circuits having different resonance frequencies are provided on one card board, for example. To form a multipurpose identification card or the like which can be arranged in a small space at an interval such that it does not interfere with each other on a dielectric film and can use a number of channels of a large number of transmission frequencies, in a considerably small size and at a low cost. And allows an alternative use for conventional barcodes.

Further, in the conventional spiral pattern formation, (3) the step of forming a pair of spiral patterns by half-die cutting the conductive foil on which the dielectric is laminated; and (4) the conductive foil of forming the pair of spiral patterns. By removing the process of removing unnecessary parts of the process, and replacing it with an etching process, in addition to reducing the process loss due to process reduction, it is possible to mass-produce products and achieve high-speed processing, and to increase the yield. Improve.

As described above, when an electromagnetic wave is transmitted to the resonance label 1 by, for example, an ID scanner or the like, the resonance label 1 has a unique resonance frequency variably set according to the circuit pattern of the conductive film 3. An echo wave is oscillated by resonating with an external electromagnetic wave having substantially the same frequency, and the presence of the predetermined resonance label 1 is recognized by receiving the echo wave with an ID scanner.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A resonance label according to the present invention. As shown in the cross-sectional view of the resonance label in FIG. 2 and the manufacturing process flow in FIG. 5, the resonance label 1 first includes a polyester film (PET) or a polyimide film (PI). , Synthetic paper, paper, etc., about 25 to 100 μm in thickness, to create and clean
After washing, a conductive film 3 such as an aluminum foil, a copper foil, a gold foil, or a silver foil having a foil thickness of about 5 to 50 μm, preferably 7 to 30 μm is etched on the backing sheet 2 by using, for example, an alkaline solution as an etching solution. Adhesives having no effect on metal surface corrosives such as an aqueous solution of ferric chloride or the like, such as a thermosetting adhesive or screen printing, photographic, and even other methods such as vapor deposition The layers are laminated and attached by the attaching means.

At this time, for example, the mount 2 has a thickness of about 25 to 1
In the case of the polyester film of 00 μm, the volume resistivity is about 2.75 × 10 5 with respect to the conductor film 3 of the aluminum foil having a foil thickness of about 7 to 20 μm printed by the screen printing method.
−6 Ω · cm, and the pitch interval of the minimum print pattern is set to about 0.20 to 0.40 by the etching process described later.
It can be set as small as about mm.

Further, for example, the mount 2 has a thickness of about 25 to 75 μm.
In the case of a polyimide film of m, the volume resistivity is about 1.72 × 10 −6 Ω · cm with respect to the conductor film 3 of a copper foil having a foil thickness of about 18 to 35 μm formed by a photographic method,
The minimum pattern pitch interval can be set as small as about 0.07 to 0.20 mm by an etching process described later.

Both of them can impart high bending characteristics to the completed resonance label 1. In the case of the screen printing method, printing may be performed using a conductive paste such as a carbon paste or a silver paste. In this case, the carbon paste has a conductor resistance of about 20 Ω / sq, and the silver paste has a conductor resistance of about 0.05 to 0. .
08 Ω / sq, and both can have a print thickness of about 10 to 15 μm and a pitch interval of the minimum print pattern of about 0.4 mm by an etching process described later.
Alternatively, the conductive film 3 may be formed, for example, by printing an anisotropic conductive film on a polyester film (PET).

Next, as shown in FIGS. 2A and 5, an etching treatment using an alkali solution or a metal surface corrosive such as an aqueous solution of ferric chloride is used to etch a predetermined portion of the conductor film 3 as an etching treatment. Unnecessary portions are removed by etching while leaving the conductive pattern, thereby forming an electrode plate pattern forming a capacitance element and a spiral pattern forming an inductance element.

At this time, as described above, as the pitch interval between the conductor patterns can be minimized, the resonance label 1 can be reduced to a size of about 1 cm square, and the thickness of the conductor film 3 also reduces the conductivity. Within the range to be maintained, for example, about 5 to 5
(0 .mu.m). When the printed conductor film 3 is once removed, it can be easily removed from the backing paper 2 by wiping it with an organic solvent such as thinner.

Next, as shown in FIGS. 2B and 5,
In order to form the dielectric layer 4 in the form of a polyethylene thin film on the electrode plate pattern or the spiral pattern, which is the conductor film 3, two mounts 2 each having a circuit pattern formed by the conductor film 3 are arranged so that the circuit pattern sides face each other. And a polyethylene film having a thickness of about 1 to 10 [mu] m is sandwiched therebetween, and then polymerized. In addition, in order to form the dielectric layer 4 uniformly, a liquid polyethylene is applied onto a conductive circuit pattern such as an electrode plate pattern or a spiral pattern of one of the mounts 2, and then the other mount 2 is subjected to facing polymerization and dried. May be.

Next, as shown in FIG. 2 (b), the two superposed mounts 2 are heat-pressed with a heat press or the like, so that the polyethylene film sandwiched between the two mounts 2 has a conductive property. The pair of electrode plate patterns and the spiral pattern are welded between the body circuit patterns and overlapped with each other via the dielectric layer 4. In this manner, the dielectric constant of the polyethylene thin film as the dielectric layer 4 becomes constant, and a circuit that does not require electrical conduction as shown in FIG.

At this time, an inductance element composed of the two conductor films 3 in a circuit pattern, an electrode plate 6 formed on the other end of the inductance element, and a dielectric material of a polyethylene thin film sandwiched between the electrode plates 6 A resonant label 1 comprising a capacitance element consisting of layers 4 is formed,
There is no bonding part between the spiral patterns, and FIG.
As shown in the electrical equivalent circuit of the resonance label 1, the respective spiral patterns constituting the coil L are connected by the capacitor C layer. An LC that oscillates an echo wave by resonating with an electromagnetic wave of a specific frequency in this way
A resonance circuit is formed. At this time, a pair of spiral patterns superposed face-to-face via a polyethylene thin film serving as the dielectric layer 4 also constitutes a capacitance element in a distributed capacity.

In the present embodiment, the conductor circuit patterns are formed on separate mounts 2 and are superposed on each other, but the present invention is not limited to this, and the present invention is not limited thereto. May be bent so that a pair of left and right conductor circuit patterns are superimposed. That is, as another embodiment, as shown in FIG. 4, a perforation is made at a boundary portion between the conductor films 3 forming a pair of conductor circuit patterns to form a fold line portion 5, and the fold line portion 5 is formed. Then, a pair of conductor circuit patterns are bent inside, and then a polyethylene film is sandwiched between the two. Then, both conductor films 3 are opposedly polymerized through the polyethylene film and heated and pressed by a heat press or the like.

As described above, an unnecessary portion of the conductor film 3 is removed by etching to form a conductor circuit pattern. Therefore, by changing and setting various circuit patterns and sizes, the resonance label 1 can be formed. Can be provided with various kinds of unique resonance frequencies, which makes it possible to obtain a small-sized resonance label 1 in which a personal identification number is complicatedly coded such as an electronic auto-lock card. You do it.

In addition, a very complicated function programmed can be provided by a shielding method and an interlocking process with a computer, and it is possible to set a frequency of several millions or more. The setting operation can be easily set by a measuring device such as an ID scanner of a resonance frequency and a computer management, and the security is improved.

Next, an example of the use of the resonance label 1 according to the present invention will be described. As a means for confirming the status of electrical wiring, water pipes, gas pipes, and the like in a concealed environment of construction and civil engineering work. In consideration of the application, for example, the resonance label 1 is placed on a pipe, a joint pipe, a valve, or an electric wiring of water, gas, or the like concealed on a wall, a ceiling, a floor, and even a road or a sidewalk of a building. It is intended to be attached (attached or placed), and the locations concealed with wood, mortar, asphalt, concrete, soil, etc. can be easily and externally identified through an ID scanner including an antenna and a measuring instrument from the outside. It can be detected and confirmed accurately.

As described above, the resonance label 1 is formed by sandwiching the surface of a spiral pattern of aluminum foil with a polyester film, and has a thickness of about 0.2 to 0.5 mm and a size of about 30 × 50 mm, for example. Or about 10 × 10-80
The construction is very simple because of the rectangular shape of about × 80mm, and the fixed frequency range is 5M
Hz to 60 MHz, and any number of fixed frequencies can be provided, and the type of wiring, piping, etc. in a concealed environment can be determined separately. That is,
When an electromagnetic wave is transmitted toward the resonance label 1 by an ID scanner or the like, the electromagnetic wave resonates with an external electromagnetic wave having a frequency substantially equal to the natural resonance frequency variably set in accordance with the circuit pattern and size of the conductive film 3 and echoes. A wave is oscillated, and by receiving the wave with the ID scanner, the presence of the predetermined resonance label 1 is accurately recognized.
The resonance labels 1 having different circuit patterns and sizes of the conductor film 3 are overlapped with each other and continuously slid, so that a continuously variable natural resonance frequency change is obtained. By returning to the original position, the original regular resonance frequency can be reproduced.

[0030]

The present invention is configured as described above.
The LC resonance circuit unit of the resonance label 1 in which an unnecessary portion of the conductive film 3 on the mount 2 is removed by etching to form a conductive circuit pattern can be reduced as much as possible in comparison with the conventional size. As a result, it is possible to reduce the size of the circuit pattern and the cost, to achieve mass production of the product and to perform high-speed processing, and to use it in place of the conventional barcode.

Further, by making it possible to change and set the circuit pattern and size of the conductive film 3 variously at the stage of the etching process, it is possible to extend the practical range and the application range and further improve the security. became. In particular, when used for an automatic identification card, a prepaid card, a pachinko card, etc., in addition to a single LC resonance circuit, a plurality of LC resonance circuits having different resonance frequencies are provided on a single card substrate such as a dielectric film. Since they can be arranged in a small space at intervals such that they do not interfere with each other, a number of channels of many transmission frequencies can be used, and a multipurpose identification card or the like can be formed in a considerably small size and at low cost, In addition, alternative use for conventional barcodes has been made possible.

Furthermore, the step (3) of forming a pair of spiral patterns by half-die-cutting the conductor foil on which the dielectric material is laminated in the conventional spiral pattern formation, and the step (4) of forming the pair of spiral patterns of the conductive foil By eliminating the process of removing unnecessary parts of the process, in addition to reducing the process loss due to process reduction, it is possible to mass-produce products and achieve high-speed processing,
The yield could be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a resonance label according to an embodiment of the present invention.

FIGS. 2A and 2B are longitudinal side views, in which FIG. 2A shows a cross section of the mount after the etching process, and FIG. 2B shows a cross section when a pair of the mounts are subjected to facing polymerization via a polyethylene film and heat pressed. .

FIG. 3 is a circuit diagram showing an electrical equivalent circuit of the resonance label.

FIG. 4 is a plan view of a resonance label according to another embodiment of the present invention.

FIG. 5 is a manufacturing process diagram of the resonance label.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Resonance label 2 ... Mount 3 ... Conductor film 4 ... Insulator layer 5 ... Fold line part 6 ... Electrode plate

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI // G01S 13/74 G01S 13/74

Claims (5)

[Claims] An inductance element formed of a spiral conductive film, an electrode plate formed at the other end of the inductance element, and a capacitance element formed of dielectric layers sandwiched between the electrode plates. In a resonance label including an LC resonance circuit that resonates with an electromagnetic wave of a specific frequency and oscillates an echo wave, an electrode plate forming the capacitance element and a spiral pattern forming the inductance element include:
A resonance label formed by etching means for removing a conductive film previously adhered and formed on a mount, leaving a predetermined conductive pattern. 2. The resonance label according to claim 1, wherein the mount is a substrate that is not affected by an etching process using any of a polyester film or a polyimide film, synthetic paper, and paper. 3. The resonance label according to claim 1, wherein the conductor film is made of any one of aluminum foil, copper foil, gold foil, and silver foil. 4. The method according to claim 1, wherein the conductive film is attached to the backing paper by any one of a sticking means, a screen printing means, a photographing means, and a vapor deposition means using a thermosetting adhesive which is not affected by an etching process. The resonance label according to any one of claims 1 to 3, wherein 5. A method of manufacturing a resonance label, comprising the following steps: (1) a step of preparing a backing such as a polyester film or a polyimide film, synthetic paper, or paper;
(2) sticking a conductive film on a backing sheet with a thermosetting adhesive,
A step of attaching and forming by any one of screen printing, photographic method, and vapor deposition; and (3) an electrode plate constituting a capacitance element by removing unnecessary portions by etching with an etching solution while leaving a predetermined conductor pattern of the conductor film. An etching process for forming each of a pattern and a spiral pattern constituting an inductance element; (4) a step of opposingly polymerizing a pair of electrode plate patterns and a spiral pattern via a dielectric layer; and (5) a pair of electrodes being counter-polymerized. A process in which a plate pattern and a spiral pattern are joined by a heat press or the like.