JP2008198095A - Information recording carrier and manufacturing method of information recording carrier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recording carrier capable of extending a communication distance with a simple configuration using an RFID inlet, and to provide a manufacturing method of the information recording carrier. <P>SOLUTION: The information recording carrier includes: a base material 2 having a plurality of steps 5a, 5b and 5c formed in the shape of steps; the RFID inlet covering the surface of the base material and having a reflecting antenna 9, a receiving antenna 10, a waveguide antenna 11 and an IC chip, connected to the receiving antenna, in which writing and reading of information are performed via the receiving antenna; and a protection member 4 further covering the surface of the RFID inlet with which the base material is covered. When the surface of the base material is covered with the RFID inlet, the RFID inlet is laid according to the shape of the stepped base material so that the reflecting antenna, receiving antenna and waveguide antenna are arranged in this order from the step on the bottom side of the base material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to an information record carrier capable of overcoming the disadvantages of an information record carrier incorporating a conventional RFID with a short communication distance and extending the communication distance, and a method for manufacturing the information record carrier.

Conventionally, an RFID tag (information record carrier) devised to extend the communication distance of a built-in RFID (Radio Frequency-Identification) is known (see, for example, Patent Document 1).
According to the RFID tag of Patent Document 1, a plate-shaped first base made of an electrostatic body, a first component having a metal layer covering the first surface of the front and back surfaces of the first base, and a sheet-shaped first base 2 bases, and a metal pattern provided on the second base and electrically connected to the metal layer of the first component to form a communication antenna, via the communication antenna connected to the metal pattern A circuit chip for performing wireless communication, and a second component having an adhesive layer for adhering the second base to the second surface with respect to the first surface of the first base, the first component and the second component It is constructed by bonding parts together.
However, since the RFID tag is conceptually different from the conventional one using the RFID inlet, such as manufacturing and bonding the first component and the second component, the manufacturing process itself is greatly changed. There is a problem that the introduction cost is increased, and there has been a demand for the development of an RFID tag (information record carrier) capable of extending the communication distance on the extension of the idea using the conventional RFID inlet.
JP 2006-301690 A

The present invention has been made paying attention to the above-mentioned problems, and provides an information record carrier capable of extending the communication distance with a simple configuration using an RFID inlet, and a method for producing the information record carrier. Objective.

An information record carrier according to the present invention includes a base having a rectangular bottom surface and a plurality of steps formed in a step shape in the height direction, covering the surface of the base, a reflecting antenna, and receiving An RFID inlet including an antenna, a waveguide antenna, and an IC chip connected to the receiving antenna and performing writing and reading of information via the receiving antenna; and the RFID inlet coated on the substrate; A protective member for covering the surface, and when the surface of the base material is covered with an RFID inlet, the reflective antenna and the receiving antenna on the stepped portion in order from the step portion on the bottom surface side of the base material Further, it is characterized in that it is laid along the shape of the step-like base material so that a waveguide antenna is disposed on the stepped portion thereon.
Moreover, the base material can be made to exhibit a truncated and stepped pyramid shape in which the area is reduced toward the center portion from the bottom surface side to the upper step portion.
Further, the base material can be formed in a stepped shape with the stepped portion directed to one side surface.
Further, the steps in the height direction between the steps can be equally spaced.
Furthermore, in the method for producing the information record carrier according to the second invention, a reflecting antenna is arranged on the peripheral edge side of the rectangular sheet base material, and the receiving antenna is provided inside the reflecting antenna, and the receiving antenna. In addition, a waveguide antenna is sequentially arranged on the inner side, and the antennas are connected by a connecting member, and an RFID inlet including an IC chip capable of writing and reading information via each antenna is manufactured. An RFID manufacturing step and a plurality of step portions in the height direction with a rectangular bottom surface portion are formed in a step shape so that the steps in the height direction between the step portions are equally spaced, and the area of the upper step portion is larger A base material production step for producing a base material having a stepped shape with reduced surface, and the surface of the base material is covered with the RFID inlet, and the reflection step is formed on the lowermost step portion of the base material. A molding step for molding the RFID inlet along the stepped shape so as to arrange a receiving antenna at the middle step, and a waveguide antenna at the uppermost step, and a surface of the base material And a protective layer manufacturing step of covering the surface of the RFID inlet covered with the protective member with a protective member.
Further, a cutout portion for retracting the IC chip and the connection member can be formed in a part of the peripheral edge of each step portion.
Further, the connecting member can serve as a dipole.

The information recording carrier according to the present invention is provided above the step on the bottom surface side of the substrate when the surface of the substrate is covered with the RFID inlet with respect to the substrate having a plurality of steps formed in a step shape in the height direction. The reflector antenna, receiver antenna, and waveguide antenna are laid along the shape of the stepped base material in order toward the step, and guided from the surface side in the thickness direction (height direction). Antenna, receiving antenna, and reflecting antenna are arranged in this order, so that the receiving antenna is first resonated by receiving the radio wave with the waveguide antenna provided near the surface, and the receiving antenna provided in the next step portion. If the antenna could not receive the signal, the reflecting antenna provided at the bottom stage receives and resonates with the receiving antenna, so that the radio wave effectively acts, thereby extending the reading / writing communication distance in the height direction. effective.
In addition, if the base material has a truncated and stepped pyramid shape with the area decreasing toward the center from the bottom to the top, the annular antenna is arranged in steps. It becomes possible to do.
Further, if the base material is formed in a stepped shape with the stepped portion facing one side surface, UHF band antennas that are linear in the width direction can be arranged in a stepped shape.
Further, if the steps in the height direction between the step portions are equally spaced so that the phases are strengthened, the resonance becomes stronger.
Further, in the method for manufacturing the information record carrier according to the second invention, the reflecting antenna, the receiving antenna, and the waveguide antenna are sequentially arranged, and the antennas are connected by a connecting member, and each antenna is connected to each other. An RFID manufacturing step for manufacturing an RFID inlet including an IC chip capable of writing and reading information, and a stepped shape in which the steps in the height direction between the steps are equally spaced, and the upper step A base material preparation step for manufacturing a base material having a stepped shape with a reduced area, and the surface of the base material is covered with an RFID inlet, and a reflecting antenna, a receiving antenna, and a waveguide portion are arranged on different step portions. Protecting the surface of the RFID inlet coated on the surface of the substrate, and the molding step of forming the RFID inlet along the staircase shape A protective layer fabrication steps of coating at wood, since the provided, it is possible to produce can stretch information recording medium and the communication distance in the height direction with the RFID inlet.
Further, if a cutout portion for retracting the IC chip and the connection member is formed on a part of the peripheral edge of each step portion, the base material, the IC chip, the connection member, etc. are retracted to the cutout portion and project to the surface. In addition, the IC chip is avoided from being broken by pressure.
Further, if the connecting member serves as a dipole, the transmission of resonance becomes more reliable.

Hereinafter, an information record carrier according to an embodiment of the present invention will be described with reference to FIGS.
1 is a plan view of an information record carrier, FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a schematic perspective view of a substrate, and FIG. 4 is an RFID inlet. FIG.
As shown in FIG. 1, the information record carrier 1 mainly includes a base material 2, an RFID inlet 3, and a protection member 4.

As shown in FIG. 3, the base material 2 is mainly truncated and has a plurality of steps 5a, 5b, and 5c, and is centered in the height direction (thickness direction) H. It has a stepped pyramid shape (three layers in this embodiment) with a planar area decreasing toward the part.
Further, the steps h between the step portions 5a and 5b and between the step portions 5b and 5c are equally spaced (see FIG. 2).
In addition, as a material of the base material 2, for example, a synthetic resin that can be easily molded can be used.

The RFID inlet 3 will be described mainly based on FIG.
The RFID inlet 3 includes a plurality of annular antennas 6 (three in this embodiment) and an IC chip 7 for storing various kinds of information. Both the antenna 6 and the IC chip 7 are made of resin. An adhesive layer (not shown) is formed on the back surface (the back surface in FIG. 4) of the sheet base material 8 which is provided on a rectangular sheet base material 8 made of a film or the like. It is affixed on the said base material 2 through an agent layer (illustration omitted).
The antenna 6 is provided with a reflecting antenna 9 on the periphery of the sheet base material 8, that is, on the outermost side, a receiving antenna 10 on the inner side, and a waveguide antenna 11 on the inner side of the receiving antenna 10. Are triple rings arranged respectively. In this way, the antenna 6 is formed in a triple ring shape, and the receiving antenna 10 and the waveguide antenna 11 are arranged inwardly from the reflecting antenna 9 at the peripheral portion, so that the reflecting antenna 9 is the longest and then receives. Antenna 10 and innermost waveguide antenna 11 have the shortest length.
The IC chip 7 is connected to a receiving antenna 10 and information is written and read via the receiving antenna 10.

  The protective member 4 serves to protect the antenna 6 and the IC chip 7 of the RFID inlet 3 attached to the surface of the base material 2 via an adhesive layer (not shown) of the sheet base material 8. The RFID inlet 3 is sealed by potting the surface with a sealing resin.

Next, a method for manufacturing the information record carrier 1 will be described with reference to FIGS.
First, a base material 2 having a stepped pyramid shape including a plurality of step portions 5a, 5b, and 5c is manufactured by molding a synthetic resin (base material manufacturing step: see FIG. 3).

  Next, the RFID inlet 3 of FIG. 4 is produced. An antenna 6, more specifically a reflecting antenna 9, a receiving antenna 10, and a waveguide antenna 11 are arranged on the sheet substrate 8 using a known technique such as printing, vapor deposition or etching, and The IC chip 7 is connected to the receiving antenna 10. Then, an adhesive material (not shown) is applied to the back surface when the surface on which the antenna 7 and the IC chip are arranged is used as the front surface to form an adhesive layer (not shown) (RFID inlet manufacturing step).

  Next, the RFID inlet 3 is placed on the surface of the base material 2, and a sponge, rubber, synthetic resin, or the like is omitted along the pyramidal steps 5a, 5b, 5c formed on the surface of the base material 2. It is pressed using a roller, the antenna 9 for reflection of the RFID inlet 3 is provided at the lowermost step portion 5a of the substrate 2, the receiving antenna 10 is provided at the middle step portion 5b, and the uppermost step portion 5a. Waveguide antennas 11 are respectively arranged on the truncated stepped portion 5c and formed in the shape of the surface of the base material 2 having a stepped pyramid shape (forming step).

Next, a protective member 4 is formed by injecting sealing resin (not shown) on the surface of the RFID inlet 3 coated on the surface of the base material 2 and potting and sealing it (protective layer manufacturing step). The record carrier 1 is produced.
Furthermore, the information record carrier 1 manufactured by the above-described manufacturing method is configured to write desired information by an RFID writing device (not shown) separately.
The information record carrier 1 on which information is written is used as an “RFID tag” through a thread not shown in the portion that does not interfere with the antenna 6 and the IC chip 7 or is not shown on the back surface of the substrate 2. A pressure-sensitive adhesive layer (not shown) to which a pressure-sensitive adhesive is applied can be formed, and can be used as an “RFID label” by being attached to an object to be stuck 12 (see FIG. 2) via this pressure-sensitive adhesive layer.

As described above, the RFID inlet 3 provided with the reflecting antenna 9, the receiving antenna 10 and the waveguide antenna 11 covers the surface of the base material 2 and among the stepped portions separated by the equal step height h. The stepped pyramid shape is configured such that the reflecting antenna 9 is laid on the lowermost step portion 5a, the receiving antenna 10 is placed on the middle step portion 5b, and the waveguide antenna 11 is laid on the uppermost step portion 5c. Is formed in the thickness direction (height direction) H in the order of the waveguide antenna 11, the reception antenna 10, and the reflection antenna 9 from the protective layer 4 side of the information recording medium 1 surface. It is arranged in a state of being equally spaced by a distance, is arranged like a Yagi antenna (registered trademark), and receives a radio wave (not shown) from an RFID writing device (not shown) in the direction of arrow F. Ante 11, the radio wave received at 11 is resonated and transmitted to the receiving antenna 10, and the radio wave that could not be received by the waveguide antenna 11 can be received by the next receiving antenna 10 connected to the IC chip 7. In order to transmit the resonated radio wave to the receiving antenna 10 which is received by the reflecting antenna 9 disposed in the lowest step portion 5a, the radio wave that has passed without being received by the waveguide antenna 11 and the receiving antenna 10 is transmitted. Compared with the conventional “information record carrier” in which the “antenna” is arranged on the same plane, the radio wave acts more effectively, so the communication distance for reading and writing in the height direction (thickness direction) H is increased.
Further, the step h is preferably set to a quarter wavelength of the radio wave of the RFID writing device (not shown) to be used between the two antennas 6 of the antenna 6 arranged on the step portions 5a, 5b, and 5c.
Note that the surface of the sheet base 8 on which the antenna 6 and the IC chip 7 are arranged may be covered with another sheet base 8 and sandwiched to protect the antenna 6 and the IC chip 7.

Next, another embodiment will be described based on FIG. 5 and FIG.
In the following description, the same parts as those in the previous embodiment are designated by the same reference numerals, and detailed description thereof is omitted.
FIG. 5 is a schematic perspective view of the base material 15, and FIG. 6 is a schematic perspective view of the RFID inlet 17.
As shown in FIG. 5, the base material 15 has three layers of step portions 5 a, 5 b, and 5 c as well as the base material 2, and has a planar area toward the center portion in the upper part in the height direction H. It has a reduced stepped pyramid shape, and a notch 16 is formed in a part of the peripheral edge of each step 5a, 5b, 5c to accommodate the antenna 6 and a connecting member to be described later. Has been. The steps h between the step portions 5a and 5b and between the step portions 5b and 5c are equally spaced.
Next, the RFID inlet 17 will be described with reference to FIG. 6. The RFID inlet 17 has a reflection antenna 9 connected to the peripheral portion of the sheet base 8, that is, the outermost side, and the IC chip 7 connected to the inner side. A reception antenna 10 and a waveguide antenna 11 inside the reception antenna 10 are triple annular antennas 6 arranged respectively, and a connecting member 18 is provided. The connecting member 18 serves as a “dipole” provided to connect the reflecting antenna 9, the receiving antenna 10, and the waveguide antenna 11 so that resonance between the antennas 11, 10, 9 can be easily transmitted. Has come to fulfill. The antennas 11, 10, 9 and the IC chip 7 are provided on the back surface in FIG. 6 unlike the previous embodiment, and are not shown on the surface on which the antenna 6 and the IC chip 7 are arranged. The adhesive is applied and attached to the base material 15. That is, the surface from which the connecting member 18, the antenna 6 and the IC chip 7 protrude is placed opposite to the surface of the base material 15 in FIG. 5, and is pressed against the surface of the base material 15 with a roller (not shown). The protruding IC chip 7 and the connecting member 18 are retracted and stored in the notch 16 formed in a part of the peripheral edge of the base material 15 so as not to interfere with the base material 15.
When the “information record carrier” produced as described above is attached to the object 12 to be attached, the waveguide antenna 11 arranged in the height direction (thickness direction) H, as in the previous embodiment, and In addition to the resonance of the reflecting antenna 9, the connecting member 18 that connects the waveguide antenna 11, the receiving antenna 10, and the antenna 6 of the reflecting antenna 9 plays an auxiliary role in resonance transmission. ) The communication distance in H is further increased.
Further, when the connection member 18, the antenna 6 and the IC chip 7 side of the RFID inlet 17 disposed on the sheet base material 8 are used as the surface, a stepped pyramid shape is placed on the base material 15 by a roller (not shown). When forming according to the shape of the base material 15 (molding step), the protruding connecting member 18 and the IC chip 7 are accommodated in the notch portion 16 and thus do not interfere with the base material 15, and therefore the sheet base material 8 side. In addition, the connecting member 18 is not unnecessarily bent at the side portions (corner portions) of the respective stepped portions 5a, 5b, and 5c, so that it is difficult to be disconnected, and the next step is a protective layer manufacturing step. When the sealing resin is injected, the sheet base material 8 protects the antenna 6 and the IC chip 7, and is not easily affected by heat or the like.
About another structure, an effect | action, and an effect, detailed description is abbreviate | omitted since it is the same as that of previous embodiment.

Next, another embodiment will be described based on FIG. 7 and FIG.
In the following description, the same parts as those in the previous embodiment are designated by the same reference numerals, and detailed description thereof is omitted.
FIG. 7 is a schematic perspective view of the base material 20, and FIG. 8 is a schematic perspective view of the RFID inlet 23.
The base material 20 has a plurality of step portions 21a, 21b, and 21c, and has a stepped shape that rises in the height direction (thickness direction) H from the lowermost step portion 21a toward one side 22 of the peripheral portion. ing. Further, the step heights h between the step portion 21a and the middle step portion 21b and between the step portion 21b and the uppermost step portion 21c are equally spaced.
Next, the RFID inlet 23 will be described with reference to FIG.
In the previous embodiment, the annular antenna 6 used for a so-called low frequency band is used. In this embodiment, an example using a short linear antenna corresponding to the UHF band will be described.
In the RFID inlet 23, a plurality of linear antennas 24 are arranged in the width direction W of the sheet base material 8. The antenna 24 has a waveguide antenna 25 having the shortest length on one side. In the middle, the receiving antenna 26 having a medium length to which the IC chip 7 is connected and the longest reflecting antenna 27 are arranged on the other side.
When the RFID inlet 23 is placed on the base material 20, the waveguide antenna 25 is provided at the uppermost step portion 21c, the reflection antenna 27 is provided at the lowermost step portion 21a, and the middle step portion 21b. The receiving antennas 26 are placed so as to face each other and are formed into the shape of a stepped base material (forming step), and the height direction (thickness direction) H from the uppermost step portion 21c on the surface side. A waveguide antenna 25, a reception antenna 26, and a reflection antenna 27 are arranged in order toward the lowermost step portion 21a, and radio waves that cannot be received by the reception antenna 26 are guided by the waveguide antenna 25 and the reflection antenna 27. Is transmitted to the receiving antenna 26 due to the resonance of the antenna, so that the radio wave acts more effectively than the conventional “information recording carrier” in which the “antenna” is arranged on the plane, so reading / writing in the height direction H One in which the communication distance of stretches.
Although not shown, the waveguide antenna 25, the receiving antenna 26, and the reflecting antenna 27 can be connected using the connecting member 18 of the previous embodiment.
About another structure, an effect | action, and an effect, detailed description is abbreviate | omitted since it is the same as that of previous embodiment.

It should be noted that the configuration and operation of the above-described embodiment are examples, and it goes without saying that they can be changed as appropriate without departing from the spirit of the present invention.

1 is a plan view showing a first embodiment of an information record carrier according to the present invention. It is a schematic sectional drawing which follows the arrow II-II line in FIG. It is a schematic perspective view of a base material. 2 is a schematic perspective view of the RFID inlet. FIG. It is a schematic perspective view of the base material used with the 2nd information recording carrier based on this invention. 2 is a schematic perspective view of the RFID inlet. FIG. It is a schematic perspective view of the base material used with the 3rd information recording carrier concerning the present invention. 2 is a schematic perspective view of the RFID inlet. FIG.

Explanation of symbols

H Height direction (thickness direction)
h Step 1 Information recording carrier 2 Base 3 RFID inlet 4 Protective members 5a, 5b, 5c Step 6 Antenna 7 IC chip 8 Sheet base 9 Reflecting antenna 10 Receiving antenna 11 Waveguide antenna 12 Substrate 15 Base 16 Notch 17 RFID inlet 18 Connecting member 20 Base materials 21a, 21b, 21c Step 22 One side 23 RFID inlet 24 Antenna 25 Waveguide antenna 26 Reception antenna 27 Reflection antenna

Claims (7)

A base material having a rectangular bottom surface and a plurality of steps formed in a step shape in the height direction;
RFID inlet comprising a reflection antenna, a reception antenna, a waveguide antenna, and an IC chip connected to the reception antenna for writing and reading information via the reception antenna, while covering the surface of the base material When,
A protective member that further covers the surface of the RFID inlet coated on the base material,
When the surface of the base material is covered with an RFID inlet, in order from the step portion on the bottom surface side of the base material, the reflecting antenna, the receiving antenna on the upper step portion, and the wave guide on the upper step portion An information recording carrier characterized by being laid along the shape of the stepped base material so that an antenna is arranged.   2. The information recording according to claim 1, wherein the base material has a truncated and stepped pyramid shape with an area decreasing toward a central portion from the bottom surface side toward an upper step portion. Carrier.   The information recording carrier according to claim 1, wherein the base material is formed in a stepped shape with a stepped portion toward one side surface.   4. The information recording carrier according to claim 1, wherein the steps in the height direction between the step portions are equidistant. A reflective antenna is disposed on the peripheral side of the rectangular sheet base material, a receiving antenna is disposed inside the reflective antenna, and a waveguide antenna is disposed further inside the receiving antenna, and An RFID production step for producing an RFID inlet including an IC chip that can connect and write information via each antenna and write and read information via each antenna;
A stepped shape with a rectangular bottom and a plurality of steps in the height direction that are stepped so that the steps in the height direction are evenly spaced. A base material preparation step for preparing a base material exhibiting
The surface of the base material is covered with the RFID inlet, and the reflection antenna is provided at the lowermost step portion of the base material, the receiving antenna is provided at the middle step portion, and the waveguide antenna is provided at the uppermost step portion. A molding step for molding the RFID inlet along the stepped shape to be arranged;
A method for producing an information record carrier, comprising: a step of producing a protective layer for covering the surface of the RFID inlet coated on the surface of the substrate with a protective member.   6. The method of manufacturing an information record carrier according to claim 5, wherein a cutout portion for retracting the IC chip and the connection member is formed in a part of the peripheral edge of each stepped portion.   7. The method of manufacturing an information record carrier according to claim 5, wherein the connecting member serves as a dipole.

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