JP4028224B2 - Paper IC card substrate having non-contact communication function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper IC card base material that can be used for gaming and educational materials at low cost. Specifically, a paper on which an antenna pattern outline for non-contact communication is printed in a frame shape on a paper card substrate, the inside of the frame can be filled with a conductive material, and an IC tag label having a non-contact communication function is mounted. The present invention relates to an IC card substrate.
It is intended to provide a free way of playing using the function of the IC card that changes depending on how the conductive material is painted.
[0002]
[Prior art]
Game cards and trading cards having a non-contact communication function are already known. In general, an IC chip is mounted on a plastic card and an oversheet is laminated to protect the antenna and the IC chip, and an inexpensive paper base is not used. .
In addition, IC cards are generally provided in a completed form, and the characteristics can be changed by freely designing and manufacturing a part of the card from the incomplete state by the end user. Nothing was provided.
Japanese Patent Application No. 2001-278694 by the applicant of the present application is made of a paper base material, but is used with a finished product and cannot change the characteristics.
[0003]
[Problems to be solved by the invention]
Therefore, in the present invention, a non-contact IC card in which an IC tag label is attached to the antenna pattern is used as the IC card, and the IC base card uses paper as the card substrate. The user freely paints to change the characteristics and to enjoy a free way of playing.
[0004]
[Means for Solving the Problems]
The first of the gist of the present invention for solving the above problems is that the antenna pattern outer shape separated into two pieces is printed in a frame shape with conductive ink on the paper base surface of the card paper so that a part thereof is close to the paper substrate surface. and, an area filled the frame by the conductive material, paper IC card group equipped with IC tag label with non-contact communication function to the approaching positions of both of the antenna pattern the antenna pattern OUTLINE printed surface In the material, a concave hole having a size for accommodating the IC tag label is formed by pressing the embossing die in the IC tag label mounting portion on the paper base surface, and both the frame-shaped antenna pattern outer shape and the IC are formed by the conductive ink in the concave hole. A paper IC card substrate having a non-contact communication function, wherein the IC chip of the tag label is electrically connected . In this case, a paper IC card having an IC tag label mounted on the antenna pattern surface is obtained.
[0005]
The second of the gist of the present invention for solving the above-mentioned problems is that the outer shape of the antenna pattern separated into two pieces is printed in a frame shape with a conductive ink so that a part thereof is close to the paper base surface of the card paper. and, an area filled the frame by the conductive material, made of paper equipped with IC tag label with non-contact communication function to the approaching positions of the antenna patterns of both a surface opposite to the antenna pattern outside the form printed surface In an IC card base material, a concave hole having a size for accommodating an IC tag label is formed by pressing an embossing die in an IC tag label mounting portion on a paper base material surface, and both frame antennas made of conductive ink in the concave hole. A paper IC card substrate having a non-contact communication function, characterized in that the pattern outer shape and the IC chip of the IC tag label are electrostatically connected . In this case, a paper IC card having an IC tag label mounted on the opposite surface of the antenna pattern is obtained.
[0006]
2nd invention of the said summary WHEREIN: The thickness of the paper layer between the antenna of the bottom face of the said concave hole, and a frame-shaped antenna pattern external shape can be made to be 0.2-0.8 mm.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The base material for paper IC cards of this invention is demonstrated with reference to drawings.
FIG. 1 shows a first embodiment of a paper IC card having a non-contact communication function, and FIG. 2 shows a second embodiment. In any case, (A) is a perspective view from the IC tag label 11 surface side, and (B) is a cross-sectional view taken along line AA of (A).
FIG. 3 shows a detailed cross section inside the recessed hole in FIG. The scale in the thickness direction in each sectional view is shown enlarged.
FIG. 4 shows a state after the inside of the antenna pattern outer shape is filled in FIG.
[0008]
In the first embodiment of FIG. 1, the outer shapes 121 and 122 of the antenna pattern are printed in a frame shape on the surface of the IC tag label 11 of the paper IC card 1.
Although the outer shape of the antenna pattern is shown in the two pieces of right-angled triangular patterns 121 and 122, the outer shape of the antenna pattern is not limited to a triangular shape as long as it functions as an antenna, and can be formed into an arbitrary shape.
The concave hole 3 is not essential, but when the IC tag label 11 is mounted in the concave hole, the flatness of the card can be improved. When the concave hole 3 is provided, both antenna pattern outer shapes are provided at positions close to each other, and the IC tag label 11 is mounted in the concave hole so as to be in contact with the antenna pattern outer shape.
[0009]
In the second embodiment shown in FIG. 2, the outer shapes 121 and 122 of the antenna pattern are printed on the surface of the paper IC card substrate 1 opposite to the IC tag label 11 side. Therefore, the outer shape of the antenna pattern is indicated by a dotted line.
Then, the IC tag label 11 is mounted on the surface of the paper base 1b opposite to the antenna patterns 121 and 122 at a position where both antenna patterns are close to each other. The IC tag label 11 is a non-contact IC tag “interposer” of an electrostatic coupling type that functions by attaching a label with an IC chip to a conductive antenna.
In the second embodiment, when an IC card is placed on a reader / writer, there is an advantage that the distance between the antennas approaches and communication becomes easy. In this case, the IC chip 111 and the antenna patterns 121 and 122 are not electrically connected directly, but can be connected electrostatically as described later to fulfill the function of the antenna.
[0010]
The antenna patterns 121 and 122 may be printed with conductive ink or with non-conductive ink that simply indicates the outer shape. This is because the area to be filled is simply specified.
However, in the case of the first embodiment, the portion that becomes the lower surface of the IC tag label cannot be filled with the antenna later, and even in the second embodiment, the IC tag label is used for reliable connection. It is preferable that only the lower surface of the IC tag label is printed in advance with conductive ink, and the IC tag label is mounted so that the antenna pattern of the IC tag label is in contact with or close to the frame shape.
[0011]
When the antenna pattern outer shapes 121 and 122 are, for example, conductive offset printing, ink composed of a conductive material, a resin, and a solvent is used.
Examples of the resin include resins for oil-based inks such as rosin modified resins, alkyd resins, and petroleum resins, and ionizing radiation curable resins such as acrylic oligomers and monomers. As the conductive material powder, powders of conductive carbon, gold, silver, tin oxide, antimony oxide and the like are used, and conductive carbon is preferably used from the viewpoint of economy. Examples of the solvent include high boiling point petroleum solvents and higher alcohols.
[0012]
The conductive offset ink is composed of a resin, a conductive powder such as conductive carbon, and a solvent. The solid content of the resin is 10% to 50% by weight, preferably 20% to 40% by weight, and the conductive material is 10% by weight. -40% by weight, preferably 15-30% by weight, and mixed using a ball mill, sand mill, triple roll mill, or other disperser to obtain an ink viscosity of 10-30 Pa · S (L-type viscometer) It is adjusted to be a conductive offset ink.
The conductive pattern can be printed by a silk screen or a gravure method, and various conductive inks used for printed wiring are commercially available.
[0013]
Only the outer shape 121, 122 of the antenna pattern made of conductive ink functions to some extent, but the characteristics are improved when the antenna area is wider.
Therefore, in the present invention, the outer shape 121, 122 of the antenna pattern is filled with a conductive material so as to have an antenna function.
As a conductive material, a familiar and common material is a pencil, but it is of course possible to use a mechanical pencil or the like using a pencil lead. However, there is a difference in conductivity depending on how to paint. Other conductive materials include conductive paints.
The pencil is a solidified graphite (graphite) and clay. The harder (9H, 8H) has more clay, and the softer (6B) has the largest amount of graphite.
Even when black crayon or ballpoint pen ink containing carbon is generally dispersed in a vehicle or wax, a good antenna pattern is often not formed because the carbon pigments do not form a continuous conductive path. Similarly, a silver sign pen or marker cannot provide conductivity.
[0014]
As shown in FIG. 4, the antenna pattern outer shapes 121 and 122 are filled with a pencil or the like to make the surfaces 121P and 122P, and then the original antenna function is acquired.
FIG. 5 is a diagram showing the relationship between the resistance value of the painted surface and the communication distance of the non-contact IC card. As shown in FIG. 5, when the surface resistivity of the antenna surface is 10 ⁵ Ω / cm ² or less, good reading and writing can be performed with an original communication distance of about 15 cm, but 10 ⁵ Ω / cm ² or more. In, it is recognized that the communication distance is shortened. When sufficiently painted with a pencil, the resistance value can be 10 ³ Ω / cm ² or less.
In this case, “BiStatix” (manufactured by Motorola) is used as the IC chip mounting label, and “BXR-610” manufactured by Motorola is used as the reader / writer.
The surface specific resistance value refers to the surface resistance between the opposing sides, considering a 1 cm square plane on the surface of the insulator.
[0015]
As shown in FIG. 3, when the concave hole 3 is provided in the paper substrate 1b, the first concave portion 31 into which the IC chip 111 of the IC tag label is inserted and the second corresponding to the thickness corresponding to the thickness of the IC tag label substrate 11b. The recess 32 can be formed to have a two-stage depth.
Since the IC chip 111 itself has a thickness of about 0.2 to 0.5 mm, the shape of the IC chip 111 appears on the label surface when the concave hole 3 is formed in two steps in this way. Therefore, it is preferable in appearance.
As shown in FIG. 3, the IC tag label 11 is also provided with small antennas 112 and 113, and bumps (not shown) of the IC chip 111 are connected to the antennas. The antennas 112 and 113 and the antenna patterns 121 and 122 of the IC tag label 11 are bonded with an anisotropic conductive adhesive (x mark portion) or the like so as to be conductive only in the vertical direction with respect to the label.
Therefore, in the case of the first embodiment, the IC chip 111 and the antenna patterns 121 and 122 are electrically connected.
[0016]
The recess 3 can be formed by embossing, counterboring, or a combination thereof. In the case of embossing, the antenna pattern is pressed but not cut, which is preferable when the concave hole of the first embodiment is formed. Even when the recess 3 is two steps deep, it can be processed by a single press with an embossing mold, and there is an advantage that the processing speed is high.
On the other hand, when drilling by counterboring is used in the first embodiment, the antenna pattern is scraped off or burned off, so it is preferable to use it in the second embodiment in which the antenna surface is not cut.
[0017]
Although not shown in FIGS. 1 and 2, between one or both of the paper substrate 1b for the card and the antenna pattern outer shapes 121 and 122 and the paper substrate surface on the side without the antenna pattern, Instructions for decorative printing or painting on the paper IC card can be printed and provided.
When a paper IC card is used for a game, it is possible to enjoy a unique game by printing a character or the like and recording data on the function or power (output) of the character on the IC chip.
In these games, the reader / writer can be enjoyed as a ring or a playing field in a combination of a paper IC card and a reader / writer.
[0018]
Coated paper, high-quality paper, card paper, resin-coated paper, resin-impregnated paper, synthetic paper, and the like can be used for the paper substrate of the card. In order to provide the concave hole 3 and accommodate the IC tag label 11, a paper thickness of about 0.5 mm is preferable.
Further, in order to maintain the insulation between the two pieces of antenna patterns, it is necessary to use paper with low hygroscopicity, and it is also preferable to apply a water-resistant coating. When the concave hole is provided by embossing, paper having a characteristic that the embossing does not return as much as possible (irreversible) is preferable.
[0019]
FIG. 6 shows a transmission / reception circuit between the IC card and the reader / writer in the first embodiment and FIG. 7 shows the second embodiment.
One of the antenna patterns 121 and 122 in the paper IC card correctly functions as a ground (earth) side, and the other antenna pattern performs a reception function. For example, if any one of the antenna patterns touches a human hand, the antenna pattern is on the ground side.
In the case of FIGS. 6 and 7, the antenna pattern 122 functions as a ground as a side having low resistance to the ground. Then, the antenna pattern 121 receives the radio wave from the reader / writer 2 and transmits the radio wave from the paper IC card.
[0020]
6 and 7, in the case of FIG. 6, the antenna pattern 121 and the antenna pattern 112 of the IC tag label, and the antenna pattern 122 and the antenna pattern 113 are directly connected. In FIG. , C2 is different. An AC signal can be received by electrostatic coupling.
Although the paper substrate 1b serves as a dielectric between the antenna patterns, it is recognized that there is no significant difference between the non-contact communication functions of the two under certain conditions. However, the thickness of the paper layer between the antennas is preferably about 0.2 to 0.8 mm.
[0021]
The reader / writer antenna 21 for reading transmits a radio wave having a resonance frequency to the non-contact IC tag. Usually, frequency bands such as 125 to 135 kHz (medium wave), 13.56 MHz, and 2.45 GHz (microwave) are used. 125 to 135 kHz and 13.56 MHz are frequently used for non-contact IC tags and IC cards. However, even if the frequency is the same, the communication method is different depending on each company, so it cannot be shared.
When reading response waves from a large number of cards, data collision (collision) may occur. However, it is necessary to avoid this, and various methods for reading while avoiding collision are known.
[0022]
【Example】
An embodiment of the present invention will be described with reference to FIGS.
Character printing is performed by process printing (4C) using offset printing on one side of 0.76 mm water-resistant paper ("New DV" manufactured by Hokuetsu Paper Co., Ltd.), and then on the non-printed side. Using the conductive offset ink, two pieces of antenna pattern outer shapes 121 and 122 as shown in FIG. 1 were printed.
[0023]
A second recess (area 16 × 16 mm, depth 120 μm) and a first recess (area 4 × 4 mm, depth 360 μm) can be formed at the center of the antenna patterns 121 and 122 at positions close to each other. The embossing mold was pressed to provide the concave hole 3 from the antenna surface side.
After this printed and embossed base material is cut into a sheet with 5 × 5 = 25 surfaces, an IC tag label with anisotropic conductive adhesive (IC made by Motorola) is inserted into the concave hole 3 of the paper card base material. The chip mounting label “BiStatix”) was aligned and mounted. A labeler was used for mounting.
That is, the antenna pattern outer shapes 112 and 113 of the IC tag label and the antenna pattern outer shapes 121 and 122 of the card paper base surface are aligned and stuck so as to be in contact with each other and overlap. The IC chip itself had a thickness of 350 μm, and the label substrate had a thickness of 100 μm.
After mounting the IC tag label, the card size was punched out into individual pieces to obtain an IC card substrate.
[0024]
The paper IC card base material was encoded using the IC card issuance processing device with the function and power writing corresponding to the character of each pattern.
The communication frequency of the non-contact IC tag label is 125 kHz, and the memory capacity is 1 kbit. The user area is about 800 bits, and a maximum of 100 alphanumeric characters can be recorded.
The inside of the antenna outer shapes 121 and 122 of the paper IC card substrate 1 was sufficiently painted with a pencil (6B) manufactured by Dragonfly Pencil Co., Ltd.
The surface specific resistance value of the painted surface was 10 ³ Ω / cm ² (measuring instrument; “MCP-T600” manufactured by Mitsubishi Chemical Corporation).
When this paper IC card was read using a motorola ("BXR-610") as a reader / writer, good non-contact communication could be confirmed.
[0025]
In this specification, the application of the paper IC card base material and the painted paper IC card is mainly described as a game application, but it can also be used as a science teaching material or a trading card for non-contact communication function learning. There is enough use value.
[0026]
【The invention's effect】
As described above, the paper IC card base material having a non-contact communication function according to the present invention has a configuration in which an antenna pattern outer shape is provided on a paper base material and an IC tag label is attached. IC cards can also be used for general-purpose applications and disposable applications.
In addition, since the antenna pattern outer shape can be filled and used immediately, it can be used for various purposes besides games.
If it is a toy by processing and creating it, it is possible to create an end user original product. As science teaching materials, it is possible to improve understanding of non-contact communication more specifically.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of a paper IC card substrate having a non-contact communication function.
FIG. 2 shows a second embodiment of a paper IC card substrate having a non-contact communication function.
FIG. 3 shows a detailed cross section inside the recessed hole in FIG.
4 shows a state after the inside of the antenna pattern outer shape is filled in FIG.
FIG. 5 is a diagram showing a relationship between a resistance value of a painted surface and a communication distance of a non-contact IC card.
FIG. 6 shows a transmission / reception circuit between a card and a reader / writer in the first embodiment.
FIG. 7 shows a transmission / reception circuit between a card and a reader / writer in the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Paper base material for IC cards 1b Paper base material 2 Reader / writer 3 Concave hole 11 IC tag label 12 Antenna pattern, antenna pattern external shape 21 Reader / writer antenna 31 1st recessed part 32 2nd recessed part 111 IC chip 112,113 Compact Antenna 121, 122 Antenna pattern, outline of antenna pattern

Claims (3)

The antenna pattern outline separated into two pieces is printed on the paper base surface of the card paper in a frame shape with conductive ink so that a part of the antenna pattern is close, and the inside of the frame is filled with a conductive material. in the outer shape print surface is a by both of the antenna pattern paper IC card substrate for mounting the IC tag label with non-contact communication function to position the proximity of the IC tag label the IC tag label mounting portion of the paper substrate surface A concave hole of a size that can be accommodated is formed by pressing an embossing mold, and both the frame-shaped antenna pattern outer shape by the conductive ink and the IC chip of the IC tag label are electrically connected in the concave hole. A base material for paper IC card having a non-contact communication function. The antenna pattern outline separated into two pieces is printed on the paper base surface of the card paper in a frame shape with conductive ink so that a part of the antenna pattern is close, and the inside of the frame is filled with a conductive material. the opposite surface a a and both of the antenna pattern paper IC card substrate for mounting the IC tag label with non-contact communication function to the approaching position of the outer shape printing surface, IC tag label mounting portion of the paper substrate surface A concave hole sized to fit the IC tag label is formed by pressing the embossing die, and both the frame-shaped antenna pattern outlines made of conductive ink and the IC chip of the IC tag label are electrostatically connected in the concave hole. and has, paper IC card substrate having a non-contact communication function, characterized in that. 3. A paper IC card having a non-contact communication function according to claim 2, wherein the thickness of the paper layer between the antenna on the bottom surface of the concave hole and the outer shape of the frame-shaped antenna pattern is 0.2 to 0.8 mm. Substrates for use.

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