JP2006048498A - Coin type information recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coin type information recording medium which has little variance in communication characteristics and has a beautiful appearance and superior durability. <P>SOLUTION: The coin type information recording medium comprises a metallic ring 1 having required outer diameter and thickness, two resin moldings 2 and 3 buried in a center opening 1a of the metallic ring 1, and an IC chip 4 integrated with an antenna, which is interposed between resin moldings 2 and 3. A thin projecting piece 5 standing from an inner peripheral surface of the metallic ring 1 projects into the center opening 1a of the metallic ring 1, as a positioning means for the resin moldings 2 and 3. The resin moldings 2 and 3 are so constituted that they are thickly stored in the center opening of the metallic ring 1 when having prescribed faces opposed to each other and being concentrically combined. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coin-type information recording medium used as a token for an amusement facility, an unlocking key of an electronic lock device, a tag for managing articles, and the like, and in particular, using a metal ring as an external component. The present invention relates to a non-contact communication antenna and an IC chip holding means in a coin-type information recording medium.

  Conventionally, as a substitute for an amusement facility or an unlocking key of an electronic lock device, a non-contact communication IC circuit is sealed in a central opening of a metal ring (for example, Patent Document 1). reference.).

The coin-type information recording medium provided with the metal ring has a larger weight than the coin-type information recording medium in which the external appearance component is formed of a resin material mixed with a resin material or metal powder. It is possible to avoid malfunction due to lack of weight in the equipment using the.
JP 2001-148047 A

  However, since the conventional coin-type information recording medium provided with a metal ring has a configuration in which a non-contact communication type IC circuit is resin-sealed in the central opening of the metal ring, the IC is related to the thickness direction and the radial direction of the metal ring. Even if it is difficult to accurately arrange the non-contact communication antenna of the circuit and the coin-type information recording medium is opposed to the non-contact communication antenna provided in the reader / writer in a predetermined arrangement, each coin-type information recording medium There is a problem that there is a large variation in communication characteristics.

  If the IC circuit is supported by some support member at the time of resin sealing, the non-contact communication antenna of the IC circuit can be arranged with a certain degree of accuracy in the thickness direction and the radial direction of the metal ring. Since the trace of the support member or the support member remains in the resin sealing portion of the coin-type information recording medium that is a product, the aesthetic appearance of the coin-type information recording medium is impaired, and the waterproofness of the IC circuit is insufficient. Thus, there arises a problem that the durability of the coin-type information recording medium is impaired.

  The present invention has been made to solve such deficiencies of the prior art, and an object thereof is to provide a coin-type information recording medium with small variations in communication characteristics, good aesthetics, and excellent durability. It is in.

  In order to solve the above problems, the present invention sandwiches a coin-type information recording medium, a mounting part including at least an IC chip having a metal ring and an input / output terminal connected to a non-contact communication antenna, and the mounting part. Positioning for restricting the setting positions of the two resin moldings in the thickness direction and the radial direction of the metal ring. The two resin moldings are embedded in the internal space of the metal ring. It was configured to include means.

  According to this configuration, the non-contact communication antenna connected to the input / output terminal of the IC chip can be set at a predetermined position with high accuracy in the thickness direction and the radial direction of the metal ring. The variation in communication characteristics can be reduced. In addition, since the resin molded body can be manufactured with high accuracy according to the shape and size of the central opening of the metal ring, the metal ring and the resin are compared with the case where the non-contact communication antenna and IC chip are sealed with resin. As a result, the coin-type information recording medium, which is a product, can have a good appearance, and the durability can be improved by improving the waterproofness.

  According to the present invention, in the coin type information recording medium having the above-described configuration, as the positioning means, a protruding piece that is thinner than the metal ring protrudes inward from the inner peripheral surface of the metal ring.

  According to such a configuration, the non-contact communication antenna is accurately set at a predetermined position with respect to the thickness direction and the radial direction of the metal ring only by abutting a part of the resin molded body against the inner peripheral surface and the projecting piece of the metal ring. Therefore, the assembly of the coin type information recording medium can be facilitated. Moreover, since the protruding piece can be made invisible after embedding the resin molding, the aesthetics of the coin-type information recording medium can be enhanced.

  According to the present invention, in the coin-type information recording medium having the above-described configuration, the protrusion is formed with a rotation preventing portion for restricting rotation of the two resin molded bodies with respect to the metal ring.

  According to such a configuration, it is possible to prevent the positional deviation in the rotational direction of the non-contact communication antenna with respect to the metal ring, and therefore it is possible to further reduce the variation in communication characteristics.

  According to the present invention, in the coin-type information recording medium having the above-described configuration, the IC chip is configured such that the non-contact communication antenna is integrally formed on a circuit forming surface via an insulating layer.

  According to this configuration, since the IC chip and the non-contact communication antenna can be integrally formed at the manufacturing stage of the IC chip, the connection process between the IC chip and the non-contact communication antenna is unnecessary, and the coin-type information recording is performed. Assembling of the medium can be facilitated. Further, even when an external force is applied to the coin-type information recording medium, the connection portion between the IC chip and the non-contact communication antenna is not easily broken, so that the durability of the coin-type information recording medium can be improved.

  In the coin-type information recording medium having the above-described configuration, the non-contact communication antenna formed on an insulating substrate and having both ends connected to the input / output terminals of the IC chip is used. I made it.

  According to such a configuration, the contactless communication antenna can be enlarged compared to the case where the contactless communication antenna is integrally formed on the circuit formation surface of the IC chip, so that the communication distance between the reader / writer and the communication characteristics can be increased. Improvements can be made.

  According to the present invention, in the coin-type information recording medium having the above configuration, the mounting component includes a booster antenna that electromagnetically couples with the non-contact communication antenna and another non-contact communication antenna provided in the reader / writer. Made the configuration.

  According to this configuration, the electromagnetic coupling with the non-contact communication antenna provided in the reader / writer can be strengthened, so that the communication distance with the reader / writer can be increased and the communication characteristics can be improved. .

  According to the present invention, in the coin type information recording medium having the above-described configuration, the two resin molded bodies are integrated by ultrasonic fusion.

  According to such a configuration, the metal ring and the two resin formed bodies can be joined in a short time as compared with the case where two resin molded bodies are bonded, and the cost of the coin-type information recording medium can be reduced. it can.

  The coin-type information recording medium of the present invention includes two resin molded bodies that sandwich the metal ring and the mounted component, and also provides positioning means for the resin molded body on the metal ring, so that the IC chip is related to the thickness direction and radial direction of the metal ring. The non-contact communication antenna connected to the input / output terminal can be set at a predetermined position with high accuracy. Therefore, the variation in communication characteristics of each coin type information recording medium can be reduced, and the reliability of a system using the coin type information recording medium can be improved. In addition, the mounting parts are sandwiched between resin moldings that can be manufactured with high precision, and this resin molding is embedded in the central opening of the metal ring, so that the contactless communication antenna and IC chip are sealed with resin. The sense of unity between the metal ring and the resin part can be enhanced, the appearance of the coin-type information recording medium as a product can be improved, and durability can be improved by improving waterproofness.

  First, a first example of a coin-type information recording medium according to the present invention will be described with reference to FIGS. 1 is a plan view of a coin-type information recording medium according to the first embodiment, FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1, and FIG. 3 is applied to the coin-type information recording medium according to the first embodiment. FIG. 4 is a perspective view of an IC chip mounted on the coin-type information recording medium according to the first embodiment.

  As shown in FIG. 1, a coin-type information recording medium of this example includes a metal ring 1 having a required outer diameter and thickness, and two resin molded bodies 2 embedded in a central opening 1a of the metal ring 1. , 3 and the antenna integrated IC chip 4 sandwiched between the resin moldings 2, 3.

  The metal ring 1 is made of, for example, a metal material such as brass, stainless steel, iron, nickel, lead, tungsten, aluminum, or an alloy material containing at least one metal material selected from these metal material groups. It is formed in the size and weight of the yen coin. In the central opening 1a of the metal ring 1, as shown in FIGS. 1 and 2, a thin protruding piece 5 standing from the inner peripheral surface of the metal ring 1 is projected as a positioning means for the resin molded bodies 2 and 3. ing. The protruding piece 5 protrudes inward from the central portion of the metal ring 1 in the thickness direction, and the inner peripheral end thereof has a waveform in which convex portions 5a and concave portions 5b are alternately connected. These convex portions 5a and concave portions 5b function as a detent means for the resin molded bodies 2 and 3. In the present embodiment, the outer shape of the metal ring 1 and the central opening 1a are formed in a circular shape, but the gist of the present invention is not limited to this and is formed in an arbitrary shape such as a polygon. can do.

  The resin moldings 2 and 3 are, for example, acrylonitrile-butadiene-styrene resin (ABS resin), polybutylene terephthalate resin (PBT resin), polyphenylene sulfite resin (PPS resin), polycarbonate resin (PC resin), polyamide resin, polypropylene resin. The same shape and the same size are formed so as to fit tightly in the central opening 1a of the metal ring 1 when they are concentrically combined with a predetermined surface facing each other. That is, each of the resin molded bodies 2 and 3 is formed so that the outer diameter is substantially equal to the diameter of the inner peripheral surface of the metal ring 1 and the thickness is half of the thickness of the metal ring 1. And the step part 6 for fitting the protrusion 5 of the metal ring 1 is formed in the inner peripheral part of the inner surface, and as shown in FIG. The concave portions 6a into which the portions 5a are fitted and the convex portions 6b to be fitted into the concave portions 5b of the protruding pieces 5 are alternately formed. Further, a chip housing portion 7 for positioning and embedding the antenna integrated IC chip 4 is recessed in the central portion of the inner surface of each resin molded body 2, 3. As described above, the coin type information recording medium of the present example is configured so that the resin molded bodies 2 and 3 are densely accommodated in the central opening 1a of the metal ring 1, thereby enhancing the sense of unity between the metal ring and the resin portion. This makes it possible to improve the durability by improving the waterproofness. If the resin molded bodies 2 and 3 are made of an opaque resin material, the projecting pieces 5 formed on the metal ring 1 can be prevented from being visually observed when embedded in the central opening 1a of the metal ring 1. Therefore, the aesthetics of the coin-type information recording medium as a product can be further improved.

  Since the resin molded bodies 2 and 3 of this example have an outer diameter substantially equal to the diameter of the inner peripheral surface of the metal ring 1, when embedded in the central opening 1a of the metal ring 1, the inner peripheral surface of the metal ring 1 is It functions as a positioning means for the resin molded bodies 2 and 3, and the set position of the IC chip 4 in the radial direction of the metal ring 1 can be regulated with high accuracy. Further, since the step portion 6 for fitting the protruding piece 5 to the outer peripheral portion of the inner surface is formed, when the protruding portion 5 of the metal ring 1 is embedded in the central opening 1a of the metal ring 1, the resin molded bodies 2 and 3 are formed. The setting position of the IC chip 4 in the thickness direction of the metal ring 1 can be regulated with high accuracy. Furthermore, since the required recesses 6a and protrusions 6b are formed on the outer periphery of the stepped portion 6, the protrusions 5a and the recesses 5b formed on the projecting pieces 5 function as a detent means for the resin moldings 2 and 3. The set position of the IC chip 4 in the circumferential direction of the metal ring 1 can be regulated with high accuracy.

  As shown in FIG. 4, the antenna integrated IC chip 4 has a spiral coil 9 formed on a circuit forming surface of the IC chip 4 manufactured through a required process via an insulating layer 8 such as a polyimide resin layer. It is formed as a non-contact communication antenna, and is formed by connecting the input / output terminal 4a of the IC chip 4 and both ends of the coil 9 through through holes provided in the insulating layer 8. The coil 9 is formed by applying a rewiring technique at the wafer stage where the IC chip 4 is based, and the center O1 of the IC chip 4 and the winding center O2 of the coil 9 are strictly matched. The Accordingly, the antenna-integrated IC chip 4 is positioned and embedded in the chip housing portion 7 recessed in the center of the inner surface of the resin moldings 2 and 3, and the resin moldings 2 and 3 are further opened in the center opening of the metal ring 1. When fitted in 1 a, the winding center of the coil 9, which is a non-contact communication antenna, is strictly arranged at the center of the metal ring 1. Thus, since the coin-type information recording medium of this example is equipped with the IC chip 4 integrated with an antenna, the IC chip and the non-contact communication antenna are formed separately as in the case where the IC chip and the non-contact communication antenna are formed separately. A connection process with a communication antenna is not required, and assembly of a coin-type information recording medium can be facilitated. Further, even when an external force is applied to the coin-type information recording medium, the connection portion between the IC chip and the non-contact communication antenna is not easily broken, so that the durability of the coin-type information recording medium can be improved.

  The resin molded bodies 2 and 3 are integrated into the central opening 1a of the metal ring 1 and then integrated by ultrasonic fusion. Accordingly, the metal ring 1 and the resin formed bodies 2 and 3 can be joined efficiently in a short time compared to the case where the resin molded bodies 2 and 3 are joined by bonding, and the cost of the coin-type information recording medium can be reduced. Can be achieved.

  Next, a second example of the coin-type information recording medium according to the present invention will be described with reference to FIGS. 5 is a plan view of a coin-type information recording medium according to the second embodiment, FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 5, and FIG. 7 is applied to the coin-type information recording medium according to the second embodiment. FIG. 2 is an exploded view of a resin molded body, an IC chip, and a booster antenna.

  As is apparent from these drawings, the coin-type information recording medium of this example is characterized in that an antenna integrated IC chip 4 and a booster antenna 11 are mounted in the resin formed bodies 2 and 3. The booster antenna 11 is an antenna device for enhancing electromagnetic coupling between a non-contact communication antenna (coil) 9 integrally formed on the IC chip 4 and a non-contact communication antenna (not shown) provided in the reader / writer.

  The booster antenna 11 of this example is formed by forming a spiral coil 11b on the surface of an insulating substrate 11a larger than the IC chip 4, as shown in FIGS. The coil 11b is formed over an area larger than the plane area of the IC chip 4 with its winding center strictly matched with the center of the insulating substrate 11a. For example, a polyimide resin sheet or the like is used as the insulating substrate 11a. The coil 11b is formed by etching a copper foil formed on the surface of the insulating substrate 11a with a uniform thickness, for example. The IC chip 4 can be set with the formation surface of the coil 9 facing the booster antenna 11, or can be set with the formation surface of the coil 9 facing away from the booster antenna 11.

  Unlike the case of the first embodiment, the resin formed bodies 2 and 3 of this example are formed in different shapes as shown in FIGS. 6 and 7. That is, in one resin-formed body 2, a step portion 6 for fitting the protruding piece 5 of the metal ring 1 and a chip storage portion 7 for positioning and embedding the IC chip 4 integrated with the antenna, and a booster antenna The booster storage part 12 for positioning and embedding 11 is formed, and the other resin forming body 3 is formed in a flat plate shape. In addition, the chip | tip storage part 7 and the booster storage part 12 are formed concentrically.

  The other parts are the same as those of the coin-type information recording medium according to the first embodiment, so the same reference numerals are displayed on the corresponding parts and the description is omitted.

  Since the coin-type information recording medium of this example includes the booster antenna 11, a non-contact communication antenna (coil) 9 formed integrally with the IC chip 4 and a non-contact communication antenna (not shown) provided in the reader / writer Therefore, the communication distance between the reader / writer and the communication characteristics can be improved.

  Next, a third example of the coin-type information recording medium according to the present invention will be described with reference to FIGS. FIG. 8 is a cross-sectional view of a coin-type information recording medium according to the third embodiment, and FIG. 9 is a resin molded body, an IC chip, and a non-contact communication antenna applied to the coin-type information recording medium according to the third embodiment. FIG.

  As is apparent from these drawings, the coin-type information recording medium of this example includes an IC chip 21 that does not include a non-contact communication antenna in the resin formed bodies 2 and 3, and both ends of the input / output terminals of the IC chip 21. And a non-contact communication antenna 22 connected to each other.

  Similar to the booster antenna 11 in the second embodiment, the contactless communication antenna 22 of this example is formed by forming a spiral coil 22b on the surface of an insulating substrate 22a larger than the IC chip 21. The coil 22b is formed over an area larger than the plane area of the IC chip 21, with the winding center strictly matching the center of the insulating substrate 22a. For example, a polyimide resin sheet is used as the insulating substrate 22a. The coil 22b is formed, for example, by etching a copper foil having a uniform thickness on the surface of the insulating substrate 22a. The IC chip 21 is mounted on the non-contact communication antenna 22 with the input / output terminal forming surface facing the coil 22b side. The input / output terminals of the IC chip 21 and the coil 22b are electrically connected via a conductive bonding material such as solder.

  The resin formed body 2 of this example includes a step portion 6 for fitting the protruding piece 5 of the metal ring 1, a chip housing portion 7 for positioning and embedding the IC chip 21, and a non-contact communication antenna 22. An antenna housing portion 23 for positioning and embedding is formed. The chip storage portion 7 and the antenna storage portion 23 are formed concentrically.

  The other parts are the same as those of the coin-type information recording medium according to the second embodiment, so the same reference numerals are displayed on the corresponding parts and the description is omitted.

  The coin-type information recording medium of this example has a coil 22b larger than the IC chip 21 formed on the insulating substrate 22a as the non-contact communication antenna 22 and having both ends connected to the input / output terminals of the IC chip 21. Therefore, compared with the coin-type information recording medium according to the first embodiment, the communication distance with the reader / writer can be increased, and the communication characteristics with the reader / writer can be improved.

  In each of the above embodiments, coils are used as the non-contact communication antennas 9 and 22 and the booster antenna 11. However, the gist of the present invention is not limited to this, and for example, a dipole antenna or a loop antenna. Any antenna device that can be formed in a planar shape can be used.

It is a top view of the coin type information recording medium concerning the example of the 1st embodiment. It is AA 'sectional drawing of FIG. It is an inner surface figure of the resin molding applied to the coin type information recording medium concerning the example of the 1st embodiment. 1 is a perspective view of an IC chip mounted on a coin-type information recording medium according to a first embodiment. It is a top view of the coin type information recording medium concerning the example of the 2nd embodiment. It is BB 'sectional drawing of FIG. It is an exploded view of the resin molding, IC chip, and booster antenna which are applied to the coin type information recording medium according to the second embodiment. It is sectional drawing of the coin-type information recording medium which concerns on the example of 3rd Embodiment. It is an exploded view of the resin molding, IC chip, and non-contact communication antenna applied to the coin-type information recording medium according to the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metal ring 1a Center opening 2,3 Resin molding 4 Antenna-integrated IC chip 5 Protruding piece (positioning means)
5a Convex part (non-rotating part)
5b Concave part (non-rotating part)
6 steps 6a recess 6b protrusion 7 chip storage 9 coil (non-contact communication antenna)
11 Booster antenna 12 Booster storage part 21 IC chip 22 Non-contact communication antenna

Claims (7)

  A metal ring, a mounting component including at least an IC chip having an input / output terminal connected to a non-contact communication antenna, and two resin moldings sandwiched between the mounting components and embedded in the internal space of the metal ring. A coin-type information recording medium, wherein the metal ring is provided with positioning means for restricting the set positions of the two resin molded bodies in the thickness direction and radial direction of the metal ring.   2. The coin-type information recording medium according to claim 1, wherein as the positioning means, a protruding piece that is thinner than the metal ring protrudes inward from the inner peripheral surface of the metal ring.   The coin-type information recording medium according to claim 2, wherein an anti-rotation portion for restricting rotation of the two resin molded bodies with respect to the metal ring is formed on the projecting piece.   4. The coin type according to claim 1, wherein the IC chip is formed by integrally forming the contactless communication antenna on a circuit forming surface via an insulating layer. 5. Information recording medium.   4. The non-contact communication antenna according to claim 1, wherein the non-contact communication antenna is formed on an insulating substrate and both ends are connected to input / output terminals of the IC chip. 5. Coin-type information recording medium.   6. The booster antenna according to claim 1, further comprising a booster antenna that electromagnetically couples with the non-contact communication antenna and another non-contact communication antenna provided in the reader / writer as the mounted component. The coin-type information recording medium described.   The coin-type information recording medium according to any one of claims 1 to 6, wherein the two resin molded bodies are integrated by ultrasonic fusion.

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