JP6433008B1 - Non-contact near field communication card and data parallel processing system using the same - Google Patents

Abstract

Non-contact short distance that exhibits a stable magnetic flux shielding effect for a pair of communication members including countermeasures against RFID electromagnetic signals that try to wrap around the outside of a partition member and can reduce the burden of signal output adjustment Provided are a wireless communication card and a data parallel processing system using the card. A pair of communication modules 11 and 21 having planar antennas 11A and 21A and a partition plate 10 having a circular through hole 10H are provided, and a window frame-like frame plate 15 is provided on both sides of the partition plate 10 therebetween. , 25 are symmetrically arranged, and the inner peripheral wall surfaces of the frame plates 15 and 25 are covered with the coating layers 15Z and 25Z, thereby generating eddy currents on the facing main surface of the partition plate 10 and non-facing main surfaces. Propagation and generation of eddy currents are prevented or suppressed, and for example, an IC card 100 compatible with an electromagnetic wave signal for RFID in the microwave band can be obtained easily and inexpensively. [Selection] Figure 1

Description

  The present invention relates to a card that includes at least a pair of communication members and is used for non-contact near field communication. The present invention also relates to a data parallel processing system using the card.

An individual recognition card (ID card) equipped with an IC chip is standardized to “ID-1 size” in ISO / IEC7810, whose outer dimensions are 85.60 mm wide × 53.98 mm long × 0.76 mm thick. (Though thicker sizes are also commonly used). In recent years, among the ID cards, (1) electronic ticket cards;
(2) Electronic money cards (including cash cards and credit cards);
(3) Passport card;
(4) Driver's license card;
(5) Personal number card;
The spread of non-contact type short-range wireless communication cards that have been put to practical use in the market is remarkable.

These are, for example, (1) entrance / exit at a ticket gate by non-contact communication using an electromagnetic wave instead of a contact (representative example: RFID: Radio Frequency Identifier method);
(2) Cashless settlement (payment);
(3) Passport issuance and travel history inquiry;
(4) Issuing a license and inquiring about driving / accident history;
(5) Public personal identification (identification) and electronic certification;
In various scenes such as these, simplification of procedures and labor saving are attempted. The above-described IC chip-mounted ID card is commonly called “IC card” in Japan and “smart card” in Europe and the United States. However, in the following description, a contactless short-range wireless communication card is referred to as “non-card”. It may be abbreviated as “contact IC card” or the like.

  By the way, in Patent Document 1, a pair (two) of IC modules including an antenna that receives an electromagnetic wave from a reader / writer (external) and an IC chip having an information processing function, and a fixed gap from each of the antennas, respectively. There is disclosed a single non-contact IC card provided with a (ferromagnetic) shielding sheet which is disposed between both IC modules with (insulating space) and shields electromagnetic waves from a reader / writer. Yes.

  On the other hand, in Patent Document 2, a shield body is formed by facing a magnetic body layer made of ferrite (ferromagnetic body) from both sides with a metal layer made of aluminum, copper, etc. (non-magnetic body) located in the center, Further, a non-contact IC card having a single IC module is fixed to the outside of each magnetic layer of the shield body to form an integrated card.

  Further, in Patent Document 3, a non-magnetic layer made of ferrite (ferromagnetic material) is faced from both sides with a metal layer made of an electromagnetic shielding material (non-magnetic material) such as aluminum or copper located at the center, A pair of (two) IC modules are provided on the outside of each non-magnetic layer via an insulating layer made of a plastic film (insulator) to form a single non-contact IC card.

  In common with the shielding sheet of Patent Document 1, the magnetic layer of Patent Document 2, and the non-permeable layer of Patent Document 3, these shielding plates use Fe (ferrite, ferritic stainless steel), Ni , Co, a ferromagnetic material having a high relative permeability such as a ferrite-containing sheet, and has an excellent electromagnetic wave shielding function due to the property of sucking magnetic lines of force. Therefore, even if a pair (two) of IC modules are arranged so as to overlap in the thickness direction, the electromagnetic wave that has passed through the IC module (antenna) on the reader / writer side (front side) contains a ferrite that is a ferromagnetic substance. Absorbed by a shielding plate such as a sheet, it becomes difficult to reach the IC module (antenna) on the non-reader / writer side (back side). Therefore, the electromagnetic wave signal from the reader / writer is received only by the front IC module (antenna), and the pair of IC modules are operated separately (here, the front IC module is operated, and the back IC module is not operated). Mean).

  As described above, if a pair of IC modules can be distinguished (identified) and individually transmitted / received (that is, data can be read or written), the data capacity that can be stored in the IC chip increases (doubles). As a matter of course, the accuracy and safety of individual recognition can be dramatically improved by increasing the number and type of individual identification numbers or adding authentication with image data.

  However, the transmission / reception (magnetic flux coupling) between the reader / writer and the IC module depends on the output adjustment of the electromagnetic wave signal, etc., and if the signal output is large, even if it is a shield plate made of a ferromagnetic material such as a ferrite-containing sheet May occur that part of the electromagnetic wave signal for RFID reaches the IC module (antenna) on the back side. Further, there is a possibility that the IC module on the back side malfunctions due to the electromagnetic wave signal for RFID that goes around the outside of the shielding plate.

  Therefore, regardless of the material of the shielding plate (for example, whether it is a non-magnetic material or a ferromagnetic material), magnetic flux coupling occurs only with the front IC module and magnetic flux coupling does not occur with the rear IC module. As described above, it is necessary to carefully adjust the output of the reader / writer according to the characteristics of the frequency (that is, the wavelength) and whenever the specification is changed.

  In particular, when the shielding plate is made of a ferromagnetic material such as a ferrite-containing sheet, the shielding plate is strongly magnetized by an external magnetic field, and continues to be magnetized by residual magnetism even when the external magnetic field disappears (hysteresis phenomenon) Therefore, there is a possibility of adversely affecting the information processing function (for example, data writing / reading function, storage function) of the adjacent IC modules by adjusting the output of electromagnetic waves. Specifically, due to the strong magnetic properties of the shielding plate, a pair of IC modules may malfunction due to poor response (simultaneous response to data reading / writing signals, or no response to both), or the shielding plate. Since the permanent magnet becomes a permanent magnet, there is a possibility that data stored in the IC chip is erased (data destruction).

JP 2002-032731 A JP 2005-327208 A Japanese Patent Laid-Open No. 2006-091964

  An object of the present invention is to provide a non-magnetic material (for example, a paramagnetic material or a diamagnetic material), which is generally inferior in shielding effect (that is, a magnetic field absorption function) as compared with a ferromagnetic material, between a pair of communication members. Even if it is used for a partition member placed on the outside of the partition member, it exerts a stable magnetic flux shielding effect on a pair of communication members, including countermeasures against electromagnetic wave signals for RFID that wrap around the outside of the partition member, and reduces the burden of signal output adjustment An object of the present invention is to provide a contactless near field communication card that can be used and a data parallel processing system using the card.

Means for solving the problems and effects of the invention

In order to solve the above problems, a non-contact short-range wireless communication card according to the present invention is:
A single card used for contactless short-range wireless communication,
A partition member (preferably a paramagnetic material such as an aluminum foil or an aluminum plate) which has conductivity and has a function of attenuating or shielding (or reflecting) against electromagnetic waves, and is formed into a sheet or film (for example, flat). ,
It includes an IC chip body having a data storage function and a communication control function and an antenna having a signal transmission / reception function, and is disposed so as to be opposed to one main surface and the other main surface of the partition member in plan view. The antenna receives an electromagnetic wave signal for RFID in a predetermined frequency range from the reader / writer, and transmits a response signal to the reader / writer, thereby enabling non-contact short-range wireless communication to the reader / writer individually. First and second communication members (eg, communication modules) to perform;
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. A first and a second frame member (for example, a frame plate) arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member An inner peripheral wall surface of the peripheral wall portion is a first electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing an electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the first peripheral wall portion. While coated with
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is a second electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing the electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the second peripheral wall portion. )
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. When the non-face-to-face communication member that is not positioned on the non-face-to-face main surface is overlapped and seen through from the overlapping direction, the partition member includes an antenna for the face-to-face communication member and an antenna for the face-to-face communication member And an open area (for example, a notch, a slit or a hole) formed so as to partially overlap each other is formed,
In the state of communication with the reader / writer, the open area generates magnetic flux coupling only between the facing communication member and the reader / writer, thereby enabling individual transmission / reception of RFID electromagnetic wave signals.

  In this way, the partition member is disposed between the pair of communication members, and the partition member is provided with an open area that is penetrated and removed so as to partially overlap the antenna of the communication member that makes a pair, and the partition member is A window frame-shaped frame member is symmetrically disposed on both sides of the frame, and the inner peripheral wall surface of each frame member is covered with an electromagnetic wave shielding layer. As a result, even if the signal output of the reader / writer is not strictly adjusted, and regardless of the material of the partition member (for example, nonmagnetic or ferromagnetic), the RFID electromagnetic wave from the reader / writer It is possible to easily realize that the signal generates magnetic flux coupling only with the antenna of the facing communication member and does not generate magnetic flux coupling with the antenna of the non-facing communication member (that is, individual transmission / reception of the electromagnetic wave signal for RFID). Accordingly, it is possible to more reliably prevent the occurrence of a malfunction due to a poor response of the contactless short-range wireless communication card (that is, a data writing / reading error by the reader / writer). Such a card may have a plurality of pairs (multiple pairs) of communication members.

  In short, the open area prevents or suppresses the generation of a demagnetizing field due to the generation of eddy currents on the facing main surface of the partition member due to the RFID electromagnetic wave signal from the reader / writer, and also occurs on the facing main surface. A magnetic field is generated on the non-facing side main surface by eddy current propagating through the member to the non-facing side main surface or an eddy current generated on the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer. By interfering with the attenuation or shielding action of the partition member against electromagnetic waves, only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and directs the response signal to the reader / writer. Is added. Furthermore, the window frame-shaped first and second frame members are arranged symmetrically with the partition member in between, and the inner peripheral wall surfaces of the peripheral wall portions of both frame members are the first and second electromagnetic shielding layers (for example, plating layers or coatings). These electromagnetic wave shielding layers can prevent or suppress the arrival of the RFID electromagnetic wave signal that wraps around the outside of the partition member to the non-face-to-face communication member.

  In this way, the first and second communication members are arranged opposite to the main surfaces on both sides across the partition member, and the antenna of the facing communication member receives a signal from the reader / writer on the front side of the partition member. By generating an electromotive force and transmitting a response signal from the antenna to the reader / writer, non-contact short-range wireless communication (communication magnetic field) is established.

  On the other hand, since the partition member is usually made of a metal having excellent conductivity (including metal plating, metal-mixed resin, etc.) regardless of whether it is a non-magnetic material or a ferromagnetic material, the metal is generated by an RFID electromagnetic wave signal from a reader / writer. An eddy current is generated on the facing main surface of the partition member, which tends to generate a demagnetizing field. This demagnetizing field acts to cancel the communication magnetic field between the facing communication member and the reader / writer. However, in the present invention, by providing the partition member with an open region that is penetrated and removed so as to partially overlap the antennas of the communication members that form a pair, generation of eddy currents on the facing main surface of the partition member is prevented or Since it is suppressed, a demagnetizing field is hardly generated (or the demagnetizing field is weakened), and the communication magnetic field between the facing communication member and the reader / writer is well maintained.

  In addition, when the signal output of the reader / writer is large, eddy current generated on the facing main surface propagates through the partition member regardless of whether the partition member is a non-magnetic material or a ferromagnetic material. There may be a phenomenon that reaches the side main surface, or a phenomenon that an eddy current is generated on the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer that goes around the outside of the partition member. However, according to the present invention, by providing the partition member with an open region that is penetrated and removed so as to partially overlap the antennas of the communication members that make a pair, the window frame-shaped first arranged symmetrically across the partition member. The inner peripheral wall surfaces of the peripheral wall portions of the first and second frame members are respectively coated with the first and second electromagnetic wave shielding layers (for example, a plating layer or a coating film), so that these on the non-facing side main surface of the partition member Propagation and generation of eddy currents are prevented or suppressed in the same manner as on the facing main surface, and the phenomenon of generating a magnetic field is inhibited.

  In this way, the electromagnetic wave signal for RFID from the reader / writer generates magnetic flux coupling only with the antenna of the facing communication member and does not generate magnetic flux coupling with the antenna of the non-facing communication member. The electromagnetic wave shielding layer supplements the attenuation or shielding action of the partition member against electromagnetic waves, and only the facing communication member receives the electromagnetic wave signal for RFID from the reader / writer and transmits the response signal to the reader / writer (In other words, an individual transmission / reception function of the electromagnetic wave signal for RFID) can be provided.

  In that case, it is desirable that the partition member and the electromagnetic wave shielding layer are made of a non-magnetic material. As a result, it has a high relative magnetic permeability and excellent magnetic field line absorption, while it has a high magnetic flux shielding effect. On the other hand, it does not use as a partition member a ferromagnetic material that is strongly magnetized (strongly magnetized) by an external magnetic field and may become permanent magnets. It will end. In other words, the non-magnetic partition member has a relative permeability close to 1 and does not become magnetized (not magnetized) when there is no external magnetic field. Therefore, the paired communication members have poor response (for data read / write signals). There is no possibility of malfunction due to simultaneous response or no response on both sides, or the stored data of each communication member being erased (destroyed). And even if it is a case where a nonmagnetic material, which is considered to be inferior in shielding effect (that is, magnetic field absorption effect) compared to a ferromagnetic material, is used for a partition member or an electromagnetic wave shield layer, the above open region is By being formed on the partition member, the burden of signal output adjustment and the like is greatly reduced while exhibiting a stable magnetic flux shielding effect for the communication members that make a pair.

  Examples of the non-magnetic material used for the partition member and the electromagnetic wave shielding layer include a paramagnetic material (Al, Sn, Pt, Pd, etc.) having a relative permeability larger than 1, and a diamagnetic material having a relative permeability smaller than 1. Au, Ag, Cu, Pb, etc.) are included, and austenitic stainless steel is also non-magnetic. Of these, aluminum materials such as aluminum foil and aluminum plate are recommended from the viewpoints of workability and cost when thinning the partition member and forming an open region (such as drilling).

  Further, the antenna communication distance L between the facing communication member and the reader / writer and the antenna communication distance L ′ between the non-facing communication member and the reader / writer are both of the electromagnetic waves for RFID emitted from the reader / writer. It is desirable that the wavelength be set to λ or less (0 <L ≦ λ, 0 <L ′ ≦ λ).

  The frequency band of electromagnetic waves that can be used for RFID is widely defined in ISO / IEC 18000 and the like from the LF (medium wave) band (30 kHz to 300 kHz) to the UHF (ultra high frequency) band (300 MHz to 3 GHz). Looking at the RFID signal transmission system that has already been put into practical use, the electromagnetic induction system that uses a loop antenna in the HF (short wave) band (3 MHz to 30 MHz) having relatively weak directivity and lateral spread is relatively The radio wave system uses a planar antenna in the UHF band (also referred to as a microwave band) having strong directivity and straightness. For example, in Japan, 13.56 MHz (wavelength λ≈22 m) is frequently used in the HF band, and 920 MHz (wavelength λ≈33 cm) or 2.45 GHz (wavelength λ≈12 cm) is often used in the microwave band. At this time, in ISO / IEC14443, the antenna communication distances L and L ′ of the “proximity non-contact communication card” are defined as 10 cm or less (0 <L ≦ 10 cm, 0 <L ′ ≦ 10 cm).

  Here, the antenna communication distances L and L ′ are set to be equal to or shorter than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ), regardless of which of the above frequency bands is used. Because the change in electric and magnetic fields up to one wavelength (unit wave) at the maximum is directly transmitted as a signal between the reader / writer antenna and the communication member antenna, there is a difference in frequency (wavelength) and signal transmission method. The common handling becomes possible without being caught by. The antenna communication distances L and L ′ at this time are generally 10 cm or less (0 <L ≦ 10 cm, 0 <L ′ ≦ 10 cm), preferably 5 cm or less (0 <L ≦ 5 cm, 0 <L ′ ≦ 5 cm). More preferably, it is 3 cm or less (0 <L ≦ 3 cm, 0 <L ′ ≦ 3 cm). If the antenna communication distances L and L 'can be shortened, the transmission output from the reader / writer antenna can be reduced, and the entire reading and writing system can be miniaturized.

  In the present invention, the “frequency range” is a concept that is narrower than the above “frequency band”, and may be regarded as the same frequency as the transmission signal when the pass / fail judgment of the frequency of the reception signal is performed by the reader / writer. Means frequency range. This “frequency range” can be defined as, for example, standard frequency (or specified frequency) ± 10%, standard frequency (or specified frequency) ± OOHz. As will be described later, when designing a card equipped with a plurality of pairs (multiple sets) of communication members, a pair of (one set) or a pair of (multiple sets) of communication members mounted data (one set) ) Or multiple pairs (multiple sets) of reader / writers, the “frequency band” and the “frequency range” are important as design criteria.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area is a single area that simultaneously includes a part of the antenna of the facing communication member projected on the facing main surface and a part of the antenna of the non-facing communication member projected on the non-facing main surface. It may be formed through.

  As described above, the first and second communication members are offset so that the positions of the two antennas (in other words, the connection positions with the corresponding IC chip bodies) do not completely overlap with each other, and the vertical and horizontal directions. A little off to at least one of the Therefore, the electromagnetic wave signal for RFID transmitted from the reader / writer (antenna) passes through the facing communication member (and the facing insulating member) and reaches the non-facing communication member (antenna) through the open area of the partition member. Even in this case, the non-face-to-face communication member has a deviation based on the above-described offset arrangement in addition to the difference in the antenna communication distance with the reader / writer in the transmission / reception timing between the face-to-face communication member and the face-to-face communication member. Magnetic flux coupling is unlikely to occur between the reader / writer.

  In addition, since the open area is formed as a single area including a part of both antennas at the same time, the processing cost of the open area is reduced. In addition, since the alignment reference point of the open area can be narrowed down to one place, the alignment between the partition member and the communication member is facilitated. In addition, the partition member is separated into two parts by punching with a single hole such as a circle, an ellipse, or a polygon, or by a straight groove (slit) directed in the short side direction or the long side direction. Thus, the open area is formed through the partition member as a single area.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area is a pair of areas including a part of the antenna of the facing communication member projected on the facing main surface and a part of the antenna of the non-facing communication member projected on the non-facing main surface. In some cases, it is formed through.

  In this case, the reception / transmission timing between the non-face-to-face communication member and the face-to-face communication member also includes a deviation based on the offset arrangement other than the difference in the antenna communication distance with the reader / writer. Magnetic flux coupling hardly occurs between the reader / writer. In this case, since the open area is formed as a pair of areas including part of both antennas separately, the best open area adapted to each of the paired communication members can be formed in the partition member. . A pair of open regions is formed by punching the partition member with a pair of holes such as a circle, an ellipse, or a polygon, or by notching a pair of opposing short sides or a pair of opposing long sides in the partition member. As a region, the partition member penetrates.

  When seen through from the overlapping direction, it is preferable that the partition member and the first and second communication members are disposed with their outer peripheral edges retracted from the outer shape of the card.

  In this way, by retracting the outer peripheral edges of the partition member and both communication members to the inside of the card outer shape, the electromagnetic wave signal for RFID from the reader / writer that wraps around the outside of the partition member and reaches the non-facing main surface is attenuated. Or it can be shielded.

  When seen through from the overlapping direction, the first and second insulating members are formed larger than the corresponding first and second communication members, and the open regions of the partition members are closed ( (Or covering).

  In this way, the first and second insulating members (for example, silicone paper) each block the open area of the partition member, so that the partition member and each communication member can be reliably separated to enhance the insulation effect. In addition, since the open area of the partition member is closed with an insulating member from both sides, an adhesive for fixing the position of the first and second communication members to the corresponding molding member (or insulating member) at the time of assembly is both molded. It is possible to prevent the member from fluidizing and intruding into the open region when the member is heat-sealed. In addition to insulating paper products such as silicone paper, insulating synthetic resin films such as polyvinylidene chloride (PVDC) and polyethylene (PE) can be used as the insulating member. Furthermore, from the viewpoint of preventing external moisture from penetrating into the inside through the insulating member and preventing the peripheral portions of both molded members from being heat-fused together, the outer peripheral edge of both insulating members is the outer shape of the card. It is desirable to retract and arrange inward.

In order to solve the above problems, when the non-contact near field communication card according to the present invention is adapted to an electromagnetic wave signal for RFID in a specific frequency band (for example, a microwave band),
A single card used for contactless short-range wireless communication,
Partition members (preferably aluminum foil, aluminum plate, etc.) made of a non-magnetic material that is conductive and has a function of attenuating or shielding (or reflecting) against electromagnetic waves, and formed into a sheet or film (for example, flat) Paramagnetic material)
Including an IC chip body having a data storage function and a communication control function and a planar antenna having a signal transmission / reception function so as to be opposed to one main surface and the other main surface of the partition member in plan view. The reader / writer is arranged so that the planar antenna receives an electromagnetic wave signal for RFID in a predetermined frequency range (for example, in a microwave band) from the reader / writer and transmits a response signal to the reader / writer. First and second communication members (for example, communication modules) for individually performing non-contact short-range wireless communication with respect to,
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. A first and a second frame member (for example, a frame plate) arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member An inner peripheral wall surface of the peripheral wall portion is a first electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing an electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the first peripheral wall portion. While coated with
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is a second electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing the electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the second peripheral wall portion. )
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. The non-face-to-face communication member that is not located on is superimposed on the non-face-to-face main surface,
The communication distance between the facing communication member and the reader / writer and the communication distance between the non-facing communication member and the reader / writer are both set to be equal to or less than the wavelength of the electromagnetic wave for RFID emitted from the reader / writer,
When viewed through from the overlapping direction, the partition member is formed with an open region that is penetrated and removed in a hole shape so as to partially overlap the antenna of the facing communication member and the antenna of the non-facing communication member, respectively. And
The open area prevents or suppresses generation of a demagnetizing field due to generation of an eddy current on the facing main surface of the partition member by an electromagnetic wave signal for RFID from a reader / writer, and is generated on the facing main surface. The non-facing surface is caused by an eddy current that propagates through the partition member and reaches the non-facing side main surface, or an eddy current that circulates outside the partitioning member and is generated on the non-facing side main surface among RFID electromagnetic wave signals from a reader / writer. By obstructing the phenomenon of generating a magnetic field on the side main surface, the attenuation or shielding action against electromagnetic waves of the partition member is complemented, and magnetic flux coupling is generated only between the facing communication member and the reader / writer, and the facing Only the communication member on the side receives the RFID electromagnetic wave signal from the reader / writer, and gives the function of transmitting the response signal to the reader / writer, Characterized in that it enables individual transceiver of use electromagnetic signals.

  Thus, a pair of communication members (communication modules) having a planar antenna and a partition member having a hole-shaped open region are provided, and window frame-like frame members are symmetrically arranged on both sides across the partition member, As described above, the inner peripheral wall surface of the frame member is covered with an electromagnetic wave shielding layer, so that generation of eddy current on the facing main surface of the partition member and propagation and generation of eddy current on the non-facing main surface are the same as described above. Is prevented or suppressed, and for example, a card compatible with an electromagnetic wave signal for RFID in a microwave band can be obtained easily and inexpensively. At that time, since the open area provided in the partition member is formed in a hole shape that overlaps only partly with the antennas of both communication members, even microwaves with strong directivity and straightness, When passing through such an open area, radio waves reaching the antenna of the non-face-to-face communication member are limited and attenuated. Therefore, the antenna of the non-face-to-face communication member does not generate an electromotive force that enables transmission / reception with the reader / writer. That is, the IC chip body of the non-face-to-face communication member cannot be activated. Even if it is activated, it cannot send (reply) to the reader / writer. In such a card, a plurality of pairs (multiple pairs) of communication members may be provided, and the frequency band or frequency range of each pair may be different from each other.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area includes a portion of the planar antenna of the facing communication member projected onto the facing main surface and a portion of the planar antenna of the non-facing communication member projected onto the non-facing main surface at the same time. May be formed as a through hole.

  As described above, the first and second communication members are offset to prevent magnetic flux coupling between the non-facing communication member and the reader / writer. And since an open area | region is formed as a single through-hole including a part of both antennas simultaneously, the processing cost of an open area | region is reduced. In addition, since the alignment reference point of the open area can be narrowed down to one place, the alignment between the partition member and the communication member is facilitated. In addition, an open area | region is formed in a partition member as a single through-hole by punching a partition member with single holes, such as circular, an ellipse, and a polygon.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area is a pair including a part of the planar antenna of the facing communication member projected onto the facing main surface and a part of the planar antenna of the non-facing communication member projected onto the non-facing main surface. It may be formed as a through hole.

  Similarly to the above, the first and second communication members are offset so that magnetic flux coupling is less likely to occur between the non-facing communication member and the reader / writer. In this case, since the open area is formed as a pair of through holes each including a part of both antennas, the best open area adapted to each of the paired communication members can be formed in the partition member. In addition, an open area | region is formed in a partition member as a pair of through-hole by punching a partition member with a pair of holes, such as circular, an ellipse, and a polygon.

  In the open region having these hole shapes, the maximum value D of the hole diameter is preferably set to be smaller than the wavelength λ of the RFID electromagnetic wave emitted from the reader / writer (D <λ).

  As described above, when the maximum value D of the hole diameter (that is, the maximum hole passing dimension) is set to be smaller than the wavelength λ (D <λ), the electromagnetic wave for RFID has an open region having these hole shapes. It becomes difficult to pass and is attenuated. As a result, an electromotive force is less likely to be generated in the antenna of the non-face-to-face communication member, and magnetic flux coupling between the non-face-to-face communication member and the reader / writer is extremely unlikely to occur in combination with the offset arrangement of the first and second communication members. Become.

  When seen through from the overlapping direction, the outer peripheral edge of the partition member is retracted to the inside of the card outer shape, and the outer peripheral edges of the facing communication member and the non-facing communication member are respectively inside the outer peripheral edge of the partition member. Evacuated and placed.

  An RFID electromagnetic wave signal that wraps around the outside of the partition member and reaches the non-facing main surface by the partition member being moved away from the outer shape of the card and the outer peripheral edges of both communication members retracting from the outer peripheral edge of the partition member. Can be attenuated or shielded.

Furthermore, in order to solve the above-mentioned problem, when the non-contact type short-range wireless communication card according to the present invention is adapted to an electromagnetic wave signal for RFID in another specific frequency band (for example, a short wave band),
A single card used for contactless short-range wireless communication,
Partition members (preferably aluminum foil, aluminum plate, etc.) made of a non-magnetic material that is conductive and has a function of attenuating or shielding (or reflecting) against electromagnetic waves, and formed into a sheet or film (for example, flat) Paramagnetic material)
An IC chip body having a data storage function and a communication control function and a loop-shaped (or coil-shaped) antenna having a signal transmission / reception function, in plan view facing one main surface and the other main surface of the partition member Are arranged so as to overlap each other, and the loop antenna receives an electromagnetic wave signal for RFID in a predetermined frequency range (for example, in a short wave band) from the reader / writer and transmits a response signal to the reader / writer. The first and second communication members (for example, communication module) for individually performing non-contact short-range wireless communication with the reader / writer,
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. A first and a second frame member (for example, a frame plate) arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member An inner peripheral wall surface of the peripheral wall portion is a first electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing an electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the first peripheral wall portion. While coated with
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is a second electromagnetic wave shielding layer (for example, a plating layer or a coating film) for blocking or suppressing the electromagnetic wave signal for RFID that wraps around the outside of the partition member and reaches the second peripheral wall portion. )
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. The non-face-to-face communication member that is not located on is superimposed on the non-face-to-face main surface,
The communication distance between the facing communication member and the reader / writer and the communication distance between the non-facing communication member and the reader / writer are both set to be equal to or less than the wavelength of the electromagnetic wave for RFID emitted from the reader / writer,
When seen through from the overlapping direction, the partition member has an opening that is penetrated and removed in a notch shape or a slit shape so as to partially overlap the antenna of the facing communication member and the antenna of the non-facing communication member, respectively. A region is formed,
The open area prevents or suppresses generation of a demagnetizing field due to generation of an eddy current on the facing main surface of the partition member by an electromagnetic wave signal for RFID from a reader / writer, and is generated on the facing main surface. The non-facing surface is caused by an eddy current that propagates through the partition member and reaches the non-facing side main surface, or an eddy current that circulates outside the partitioning member and is generated on the non-facing side main surface among RFID electromagnetic wave signals from a reader / writer. By obstructing the phenomenon of generating a magnetic field on the side main surface, the attenuation or shielding action against electromagnetic waves of the partition member is complemented, and magnetic flux coupling is generated only between the facing communication member and the reader / writer, and the facing Only the communication member on the side receives the RFID electromagnetic wave signal from the reader / writer, and gives the function of transmitting the response signal to the reader / writer, Characterized in that it enables individual transceiver of use electromagnetic signals.

  As described above, a pair of communication members (communication modules) having a loop antenna and a partition member having a notch-shaped or slit-shaped open region are provided, and window frame-shaped frame members are symmetrically arranged on both sides of the partition member. Since the inner peripheral wall surface of each frame member is covered with an electromagnetic wave shielding layer, the generation of eddy currents on the facing main surface of the partition member and the generation of eddy currents on the non-facing side main surface are the same as described above. Propagation and generation are prevented or suppressed, and for example, a card compatible with an electromagnetic wave signal for RFID in a short wave band can be obtained easily and inexpensively. In that case, the open area provided in the partition member is formed in a cutout shape or slit shape that overlaps only partly with the antennas of both communication members, so the short wave with weak directivity and lateral spread In this case, electromagnetic waves reaching the antenna of the non-face-to-face communication member when passing through such an open region are limited and attenuated. Therefore, the antenna of the non-face-to-face communication member does not generate an electromotive force that enables transmission / reception with the reader / writer. That is, the IC chip body of the non-face-to-face communication member cannot be activated. Even if it is activated, it cannot send (reply) to the reader / writer. In such a card, a plurality of pairs (multiple pairs) of communication members may be provided, and the frequency band or frequency range of each pair may be different from each other.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area includes a part of the loop antenna of the facing communication member projected on the facing main surface and a part of the loop antenna of the non-facing communication member projected on the non-facing main surface at two locations simultaneously. It may be formed as a single slit that traverses.

  As described above, the first and second communication members are offset to prevent magnetic flux coupling between the non-facing communication member and the reader / writer. And since an open area | region is formed as a single slit which crosses a part of both antennas simultaneously at two places, the processing cost of an open area | region is reduced. In addition, since the alignment reference point of the open area can be narrowed down to one place, the alignment between the partition member and the communication member is facilitated. In addition, by separating the partition member into two parts by a single groove (for example, a straight slit) that extends in the short side direction or the long side direction, the open region is formed through the partition member as a single slit. .

  Specifically, the single slit has two lengths of the card outline at unequal positions that are deviated (shifted) from the center of the long-axis direction of each loop antenna in the first and second communication members. It is formed so as to intersect each side.

  For example, in the case of a loop antenna used in the short wave (HF) band, when magnetic flux passes (moves) through the loop antenna of the facing communication member placed in the magnetic field of the RFID electromagnetic wave signal from the reader / writer, An electromotive force is generated by electromagnetic induction in the loop antenna of the facing communication member. On the other hand, when viewed from the reader / writer side, the loop-shaped antenna of the non-facing communication member is covered with a partition member except for a single slit (open region), and the single slit is the non-facing communication member. The loop antenna is provided so as to intersect with the long side of the card at an uneven position that is deviated (shifted) from the center in the long axis direction of the loop antenna. Therefore, since the loop antenna of the non-face-to-face communication member passes (moves) the magnetic flux evenly even within the magnetic field of the RFID electromagnetic wave signal from the reader / writer, the IC chip body is driven. The electromotive force required for sending (replying) to the reader / writer is not generated.

When seen through from the overlapping direction, the first and second communication members are arranged offset (齟齬) from each other inside the rectangular card outline (and in the short side direction or the long side direction),
The open area consists of two loop antennas on the facing communication member projected on the facing main surface and two loop antennas on the non-facing communication member projected on the non-facing main surface. In some cases, it is formed as a pair of notches that cross each other.

  Similarly to the above, the first and second communication members are offset so that magnetic flux coupling is less likely to occur between the non-facing communication member and the reader / writer. In this case, since the open area is formed as a pair of notches that cross part of both antennas at two locations, the best open area suitable for each pair of communication members is used as the partition member. Can be formed. In addition, an open area | region is formed in a partition member as a pair of notch by notching a pair of opposing short side or a pair of opposing long side in a partition member, respectively.

  Specifically, the pair of cutouts are two lengths of the card outline at unequal positions that are biased (displaced) from the center of the major axis direction of each loop antenna in the first and second communication members. It is formed so as to intersect each side separately.

  For example, in the case of a loop antenna used in the short wave (HF) band, when magnetic flux passes (moves) through the loop antenna of the facing communication member placed in the magnetic field of the RFID electromagnetic wave signal from the reader / writer, An electromotive force is generated by electromagnetic induction in the loop antenna of the facing communication member. On the other hand, when viewed from the reader / writer side, the loop-shaped antenna of the non-facing communication member is covered with a partition member except for a pair of notches (open region), and the pair of notches is loop-shaped of the non-facing communication member. It is provided so as to cross the long side of the card separately at an unequal position that is deviated (deviated) from the center in the long axis direction of the antenna. Therefore, since the loop antenna of the non-face-to-face communication member passes (moves) the magnetic flux evenly even within the magnetic field of the RFID electromagnetic wave signal from the reader / writer, the IC chip body is driven. The electromotive force required for sending (replying) to the reader / writer is not generated.

  In the open region having the slit shape or the notch shape, the maximum value W of the transverse width is preferably set smaller than the wavelength λ of the RFID electromagnetic wave emitted from the reader / writer (W <λ).

  As described above, when the maximum value W of the transverse width (that is, the maximum width dimension when traversing the loop antenna) is set to be smaller than the wavelength λ (W <λ), the electromagnetic wave for RFID can be separated from these slits. It becomes difficult to pass through an open area having a shape or a notch shape and is attenuated. As a result, an electromotive force is less likely to be generated in the antenna of the non-face-to-face communication member, and magnetic flux coupling between the non-face-to-face communication member and the reader / writer is extremely unlikely to occur in combination with the offset arrangement of the first and second communication members. Become.

  By the way, the IC chip bodies of the first and second communication members each have a data storage unit for storing at least one of two-dimensional or three-dimensional image data, audio data, and number code data for personal authentication. The personal authentication data may be read from the data storage unit or written to the data storage unit by the reader / writer.

In this way, if personal authentication data such as image data can be built in the first and second communication members (IC chip body), it can be used in combination with conventionally used check codes such as passwords and passwords. It is possible to dramatically improve the security function. The data storage unit (memory) is a read-only ROM (read
(only memory) type (for example, EP-ROM) and random access memory (RAM) type (for example, S-RAM) capable of reading and writing. The image data may be either a still image or a moving image, and further includes composite data such as a moving image with sound.

  The first and second electromagnetic wave shielding layers preferably contain a nonmagnetic material and are formed of a plating layer or a coating film.

  Thus, when the electromagnetic wave shielding layer is formed of a plating layer or a coating film, the electromagnetic wave shielding layer is easily formed with a uniform thickness with respect to the inner peripheral wall surface of the frame member, and is arranged symmetrically with the partition member interposed therebetween. It is easy to achieve a reduction in the thickness of the two window-frame-shaped frame members and the entire card.

  By the way, in order to form an electromagnetic wave shielding layer (coating layer) by plating the inner peripheral wall surface of the peripheral wall portion of the frame member, plating such as electroplating, electroless plating, thermal spraying, vacuum deposition, sputtering, ion plating, etc. Technology is adopted. Alternatively, coating techniques such as spray coating, powder coating, electrostatic coating, and electrodeposition coating are used to form an electromagnetic shielding layer (coating layer) by coating the inner wall surface of the peripheral wall of the frame member. Is done.

  At this time, the plating material or paint that is a material covering the inner peripheral wall surface of the frame member contains a non-magnetic material. Non-magnetic materials include paramagnetic materials (Al, Sn, Pt, Pd, etc.) and diamagnetic materials (Au, Ag, Cu, Pb, etc.) as well as the partition member.

  At that time, for example, a large number of frame members are aligned and stacked, and an electromagnetic wave shielding paint, which is a kind of conductive paint, is sprayed all at once on the inner peripheral wall surface of the peripheral wall portion, thereby having an electromagnetic wave shielding layer on the inner peripheral wall surface. Many can be manufactured at once.

  As described above, the electromagnetic wave shielding layer is formed of a plating layer or a coating film, thereby reducing the thickness of the frame member (for example, one sheet having a thickness of 0.3 mm or less) and mass production (for example, batch production of 100 sheets or more). ) Can be achieved at the same time.

And in order to solve the said subject, the data parallel processing system which concerns on this invention is the following.
Any one of the above contactless near field communication cards;
A first reader / writer that is disposed opposite to the first communication member and capable of only non-contact short-range wireless communication with the first communication member in a predetermined frequency band or frequency range;
The second communication member arranged opposite to the second communication member and capable of only non-contact short-range wireless communication with the second communication member in the same frequency band or frequency range as the first communication member. With a reader / writer,
Data reading or writing operation executed by the first reader / writer with respect to a first data storage unit provided in the IC chip body of the first communication member, and the IC chip body of the second communication member The data reading or writing operation executed by the second reader / writer can be processed in parallel (for example, simultaneously) with respect to the second data storage unit provided in the apparatus.

  In this way, data access (reading or writing) is performed simultaneously or sequentially with respect to each data storage unit of a pair or a plurality of pairs of communication members using one or a plurality of reader / writers, one set consisting of two units. Since this can be done, data processing can be speeded up. At this time, the first and second reader / writers in each set transmit signals of the same output in the same frequency range (same wavelength range) to the first and second communication members, and corresponding communication members. And the reader / writer may have the same communication distance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view schematically showing a first embodiment of a contactless near field communication card (hereinafter also simply referred to as an IC card) according to the present invention. FIG. 2 is a plan view showing the IC card of FIG. FIG. 2 is a bottom view showing the IC card of FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a sectional view taken along line VV in FIG. 2. Explanatory drawing showing an example of the manufacturing process of a frame board. Explanatory drawing showing an example of the assembly process of a frame plate and a partition plate following FIG. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for microwaves by a reader / writer. The block diagram showing the state of FIG. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for microwaves by a reader / writer. The block diagram showing the state of FIG. The top view which shows an example of the surface image of the IC card of FIG. The bottom view which shows an example of the back surface image of the IC card of FIG. Explanatory drawing which shows the simultaneous parallel transmission / reception state with the front side communication module for microwaves and the back side communication module for microwaves by two reader / writers. Exploded perspective view schematically showing a second embodiment of the IC card according to the present invention. FIG. 16 is a plan view showing the IC card of FIG. FIG. 16 is a bottom view showing the IC card of FIG. XVIII-XVIII sectional view taken on the line of FIG. Explanatory drawing showing an example of the assembly process of a frame board and a partition plate. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for shortwaves by a reader / writer. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for short waves by a reader / writer. Explanatory drawing which shows the simultaneous parallel transmission / reception state with the front side communication module for shortwaves and the back side communication module for shortwaves by two reader / writers. Exploded perspective view schematically showing a third embodiment of the IC card according to the present invention. FIG. 24 is a plan view showing the IC card of FIG. FIG. 24 is a bottom view showing the IC card of FIG. XXVI-XXVI line sectional drawing of FIG. Explanatory drawing showing an example of the assembly process of a frame board and a partition plate. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for shortwaves by a reader / writer. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for short waves by a reader / writer. Explanatory drawing which shows the simultaneous parallel transmission / reception state with the front side communication module for shortwaves and the back side communication module for shortwaves by two reader / writers.

(First Example)
Hereinafter, embodiments of the present invention will be described with reference to the examples shown in the drawings. A first embodiment of an IC card according to the present invention is shown in FIGS. 1 is an exploded perspective view schematically showing an IC card, FIG. 2 is a partially broken plan view, FIG. 3 is a partially broken bottom view, and FIGS. 4 and 5 are IV-IV and VV lines in FIG. FIG.

The IC card 100 shown in these figures is formed by heating and press-molding each component shown below as a single IC card used for non-contact short-range wireless communication in the proximity RFID system, It is formed on one horizontally long rectangular card of ID-1 size (horizontal 85.60 mm × vertical 53.98 mm).
(1) A partition plate 10 (partition member) formed into a horizontally long rectangular shape in the form of one flat sheet or film;
(2) A horizontally-long rectangular front-side communication module 11 disposed so as to be opposed to the front-side main surface (upper surface in FIG. 1) and the back-side main surface (lower surface in FIG. 1) of the partition plate 10 in plan view. Back side communication module 21 (first and second communication members);
(3) Between the partition plate 10 and the front-side communication module 11 and between the partition plate 10 and the back-side communication module 21, an electrical insulating space (gap) corresponding to its own thickness is provided between them. The horizontally long front side insulating sheet 12 and the back side insulating sheet 22 (first and second insulating members) to be formed;
(4) The front side frame plate 15 and the back side frame plate 25 (first and second frame members) arranged in contact with each other so as to sandwich the front side main surface and the back side main surface of the partition plate 10;
(5) A horizontally-oriented rectangular front-side molded plate that is arranged outside the front-side frame plate 15 and the back-side frame plate 25 and outside the front-side communication module 11 and the back-side communication module 21 and holds the modules 11 and 21 in position. 13 and the back side shaping | molding board 23 (1st and 2nd shaping | molding member).

  In addition, in order to protect the outer surface of each shaping | molding board 13 and 23 on the further outer side of the front side shaping | molding board 13 and the back side shaping | molding board 23, as shown in FIG.4 and FIG.5 (cross-sectional view), Back side protection sheets 24 (first and second protection members) are respectively disposed. However, since the IC card 100 may be configured not to include at least one of the protective sheets 14 and 24, the protective sheets 14 and 24 are horizontal imaginary lines in FIG. 2 and is omitted in FIG. 2 (plan view) and FIG. 3 (bottom view). The same applies to the protective sheets 14 and 24 in other examples described later.

  By the way, the thickness of each component of the IC card 100 is, for example, 0.05 to 0.1 mm for the partition plate 10, 0.1 to 0.3 mm for the communication modules 11 and 21, and 0 for the insulating sheets 12 and 22, respectively. .05 to 0.3 mm, the frame plates 15 and 25 are each 0.1 to 0.3 mm, the molded plates 13 and 23 are each 0.2 to 0.5 mm, and the protective sheets 14 and 24 are each 0.03 to 0.3 mm. 1 mm. These components are generally made of a thermoplastic resin except for the partition plate 10 and the insulating sheets 12 and 22, as will be described below, and an adhesive is applied to the opposing surfaces as needed and laminated. Therefore, the final thickness of the IC card 100 is adjusted to, for example, 1.3 to 1.6 mm after the heat and pressure molding.

  The partition plate 10 is located substantially in the center in the thickness direction of the IC card 100 and has conductivity and attenuation or shielding action against electromagnetic waves (or, it can be rephrased as a reflection action by the function of drawing and radiating electromagnetic waves). It is comprised with the nonmagnetic body (namely, paramagnetic body or diamagnetic body) which has. Here, a thin aluminum plate which is a paramagnetic material and has a thickness of 0.1 mm or less, that is, a flat aluminum foil is used. The partition plate 10 can also be formed of an austenitic stainless steel plate, a conductive ceramic sheet, a film-like polyethylene (PE) resin, a polyvinylidene chloride (PVDC) resin, or the like.

  The front-side communication module 11 includes an IC chip body 11M having a data storage function and a communication control function, and an antenna 11A having a signal transmission / reception function. The IC chip body 11M and the antenna 11A are placed on a wiring board 11S serving as a base. (See FIG. 2). Similarly, the back side communication module 21 includes an IC chip body 21M having a data storage function and a communication control function, and an antenna 21A having a signal transmission / reception function, and the IC chip body 21M and the antenna 21A serve as a base wiring board 21S. (See FIG. 3).

  In this embodiment, the front-side communication module 11 and the back-side communication module 21 have the same specifications, and the wiring board 11S and the wiring board 21S have the same outer shape and are overlapped in a back-to-back state at the same position in plan view. (See FIGS. 2 and 3). The pair of communication modules 11 and 21 has a rectangular shape elongated in the lateral direction (left and right direction) of the IC card 100, and the antennas 11A and 21A are folded in a lateral direction (curved into an S-shape), that is, in the IC card 100. It is a planar antenna extending in a wing shape in the longitudinal direction. IC chip main bodies 11M and 21M are arranged at substantially the center in the horizontal direction of the antennas 11A and 21A. The antennas 11A and 21A and the IC chip bodies 11M and 21M are formed on the surfaces of the corresponding wiring boards 11S and 21S by screen printing using a mesh such as a silk screen, a paint screen, or a stencil screen. Specifically, the front side wiring board 11S and the back side wiring board 21S are made of, for example, polyvinyl chloride (PVC) resin, acrylonitrile / butadiene / styrene (ABS) resin, polyethylene / terephthalate (PET) resin, polyimide (PI) resin or the like. The sheet is made of a flexible thermoplastic resin sheet, and is fixed to the inner surface of the corresponding front side molding plate 13 and back side molding plate 23 with an adhesive or the like (see FIG. 1).

  The IC chip bodies 11M and 21M may be mounted (mounted and fixed) substantially at the center in the lateral direction of the antennas 11A and 21A printed on the wiring boards 11S and 21S. Further, the antennas 11A and 21A and the IC chip bodies 11M and 21M may be mounted as discrete circuits on the wiring boards 11S and 21S, or the antennas 11A and 21A may be configured by embedding, etching, plating, or the like.

  For example, silicone (SI) paper, which is a kind of thermosetting resin, is used for the front-side insulating sheet 12 and the back-side insulating sheet 22, and between the partition plate 10 and the front-side communication module 11 and between the partition plate 10 and the back-side communication module 21. An electrical insulation state is given to each of the communication modules 11 and 21 by filling a gap (insulation space) between them. Further, the front side communication module 11 and the back side communication module 21 are arranged so as to face the main surfaces on the front side and the back side of the partition plate 10 and overlap each other in plan view through the front side insulating sheet 12 and the back side insulating sheet 22.

  The front side molding plate 13 and the back side molding plate 23 are made of a thermoplastic resin having electrical insulation and mechanical strength, such as acrylic (methacrylic; PMMA) resin. Moreover, the front side protective sheet 14 and the back side protective sheet 24 are comprised by thermoplastic resin transparent sheets, such as a polyethylene terephthalate (PET) resin, for example. Further, the molded plates 13 and 23 and the protective sheets 14 and 24 are arranged so as to overlap with the partition plate 10, the frame plates 15 and 25, the communication modules 11 and 21, and the insulating sheets 12 and 22 in plan view.

  The front side frame plate 15 and the back side frame plate 25 are made of a thermoplastic resin (for example, acrylic (methacrylic; PMMA) resin) having electrical insulation and mechanical strength, like the front side molded plate 13 and the back side molded plate 23. Composed. The frame plates 15 and 25 are formed in a window frame shape along the sides of the rectangular shape whose peripheral wall portions 15W and 25W (first and second peripheral wall portions) form the outer shape of the card. And the back side) are arranged in contact with each other so as to sandwich the main surface. That is, the outlines of the peripheral wall portions 15W and 25W of the frame plates 15 and 25 have the same shape (congruent figure) as the outlines of the forming plates 13 and 23. On the other hand, the inner shape lines of the peripheral wall portions 15W and 25W of the frame plates 15 and 25 are the same shape (congruent figure) as the outer shape lines of the insulating sheets 12 and 22. In addition, the outline of the partition plate 10 is located between the outer shape lines and the inner shape lines of the peripheral wall portions 15W and 25W of the frame plates 15 and 25 (see FIG. 7E).

  Therefore, in the front-side frame plate 15 arranged in contact with the front-side main surface of the partition plate 10, the front-side communication module 11 and the front-side insulating sheet 12 are accommodated in the internal space of the front-side peripheral wall portion 15W, and the front-side molded plate 13 covers the lid. It becomes a form to do. Similarly, in the back side frame plate 25 arranged in contact with the back side main surface of the partition plate 10, the back side communication module 21 and the back side insulating sheet 22 are accommodated in the internal space of the back side peripheral wall portion 25W, and the back side molding plate 23 is the lid. It becomes a form to do.

  The inner peripheral wall surface of the front side peripheral wall portion 15W is covered with a front side coating layer 15Z (first electromagnetic wave shielding layer) having a predetermined thickness (for example, 0.01 to 0.5 mm). It has a function of blocking or suppressing an RFID electromagnetic wave signal that wraps around the outside and reaches the front peripheral wall portion 15W (see FIGS. 10 and 14). Similarly, the inner peripheral wall surface of the back side peripheral wall portion 25W is covered with a back side coating layer 25Z (second electromagnetic shielding layer) having a predetermined thickness (for example, 0.01 to 0.5 mm). It has the function of blocking or suppressing the electromagnetic wave signal for RFID that wraps around the outside and reaches the back peripheral wall 25W (see FIGS. 8 and 14).

  Here, an outline is demonstrated about an example of the manufacturing process of the frame board shown in FIG. 6, and an example of the assembly process of the frame board and partition plate shown in FIG. In FIG. 7, the thickness of the partition plate 10 is omitted.

<Cutting step> (FIG. 6A)
An insulating synthetic resin plate (for example, a transparent acrylic plate) having a predetermined thickness (for example, 0.3 mm) is cut into the same shape as the outer shape of the card to form a rectangular plate P1.

<Punching process> (FIG. 6B)
The inside of the rectangular plate P1 is punched into the same shape as the outline of the insulating sheets 12 and 22 (see FIG. 1), and the window frame plate P2 is made.

<Inner wall surface covering step> (FIG. 6C)
A large number (for example, 100 or more) of window frame plates P2 are stacked, and a plating process or a coating process is performed over the entire circumference (all four faces) of the inner peripheral wall surface to form a coating layer. In this embodiment, the nozzle N rotates and moves up and down inside the stacked window frame plate P2, and is spray-coated with an electromagnetic wave shielding paint which is a kind of conductive paint and contains copper as a diamagnetic material. Thus, the entire inner peripheral wall surface of each window frame plate P2 is coated all at once with a coating film PL (coating layer) having a predetermined thickness (for example, 0.1 mm), and a large number of coating film forming plates P3 are formed in a stacked state. .

<Superposition process> (FIG. 7D)
The partition plate 10 is sandwiched between the two coating film forming plates P3 and P3 taken out from the products manufactured in the inner peripheral wall surface coating step.

<Crimping process> (FIG. 7E)
Adhesive is applied to each facing surface of the front side frame plate 15 (coating film forming plate P3), the partition plate 10, and the back side frame plate 25 (coating film forming plate P3), or is heated and pressed without being applied and is pressure-bonded. . In this embodiment, after the frame plates 15 and 25 and the partition plate 10 are pressure-bonded as shown in FIG. 7E, or as shown in FIG. Before being sandwiched between P3, the partition plate 10 is punched and formed with a microwave through hole 10H described later.

  As shown in FIGS. 9 and 11, the communication modules 11 and 21 (IC card 100) do not have a battery, and receive electromagnetic waves from the antenna 1000A of the reader / writer 1000 with their own antennas 11A and 21A. A passive type (passive type) that generates an electromotive force for wireless communication is used in the units 11M3 and 21M3. The IC chip bodies 11M and 21M have identification data (including personal authentication data) for specifying the owner of the IC card 100 in addition to the power generation units 11M3 and 21M3 having such an electromotive force generation function. The data storage units 11M2 and 21M2 and the antennas 11A, 11M2, 11M2, and 11M2 receive the electromagnetic wave signal for RFID from the antenna 1000A and transmit a response signal to the antenna 1000A. And a transmission / reception unit 11M1, 21M1 having a communication control function for issuing a command to 21A.

  On the other hand, in addition to the antenna 1000A, the reader / writer 1000 has a communication control function that transmits an electromagnetic wave signal for RFID to the antennas 11A and 21A and issues a command to the antenna 1000A to receive a response signal thereto. It has a control / adjustment function such as a transmission / reception timing of an electromagnetic wave signal for RFID when reading / writing data stored in the data storage unit 11M2, 21M2 of the transmission / reception unit 1000S and the data storage unit 11M2, 21M2 A data processing unit 1000C and a power supply unit 1000B for supplying operating power to the transmission / reception unit 1000S and the data processing unit 1000C are provided.

  Note that the auxiliary power supply units 11B and 21B are included in the communication modules 11 and 21 in consideration of the situation where the output of the electromagnetic wave signal for RFID emitted from the antenna 1000A of the reader / writer 1000 is restricted by, for example, regulations according to laws and the surrounding environment. May be attached. Auxiliary power supply units 11B and 21B preliminarily store part of the electromotive force generated in power generation units 11M3 and 21M3, and actuating auxiliary power for receiving and transmitting units 11M1 and 21M1 when an emergency such as insufficient electromotive force occurs. The function of supplying

  As shown in FIG. 8, when the reader / writer 1000 fixedly arranged communicates with the front-side communication module 11 on the front side (left side in the figure) of the IC card 100 that slides along the main surface (up and down in the figure), The main surface on the front side (left side) of the partition plate 10 is a facing main surface 10fs, and the main surface on the back side (right side) is a non-facing main surface 10ns. The front-side communication module 11 positioned between the reader / writer 1000 and the partition plate 10 is overlapped on the facing main surface 10fs of the partition plate 10 as a facing-side communication module, and is positioned between the reader / writer 1000 and the partition plate 10. The non-facing communication module 21 is not overlapped with the non-facing side main surface 10 ns of the partition plate 10 as a non-facing communication module. Note that the slide movement direction of the IC card 100 indicated by the arrow symbol in FIG. 8 may be slightly inclined (for example, within a range of ± 15 ° in the vertical direction).

  At this time, the antenna 11A of the face-to-face communication module 11 (front side communication module) has a predetermined frequency in a microwave band (for example, a standard frequency of 920 MHz) and an antenna 1000A of the reader / writer 1000 (configured by a planar antenna similar to the antenna 11A). Communication is possible in the frequency range. Specifically, the antenna 11A receives an RFID electromagnetic wave signal from the antenna 1000A in a frequency range in which communication (transmission / reception) is possible, for example, at 920 MHz ± 50 MHz (or 920 MHz ± 5%), and responds toward the antenna 1000A. A signal can be transmitted (see FIG. 9).

  The antenna communication distance L between the antenna 11A of the face-to-face communication module 11 (front-side communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 21A of the non-face-to-face communication module 21 (back-side communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L ′ between the two is set to 3 cm or less. As described above, the antenna communication distances L and L ′ are equal to or less than the wavelength λ of the RFID electromagnetic wave emitted from the reader / writer 1000 (wavelength λ≈33 cm at the standard frequency 920 MHz) (0 <L ≦ λ, 0 <L ′ ≦ λ). ) To 1 wavelength (unit wave) change in electric field / magnetic field (change in magnetic flux) is directly transmitted as a signal between the antenna 1000A of the reader / writer 1000 and the antennas 11A and 21A of the communication modules 11 and 21. .

  As shown in FIG. 10, when the reader / writer 1000 that is fixedly arranged communicates with the back side communication module 21 on the back side (right side in the figure) of the IC card 100 that slides along the main surface (up and down in the figure), The main surface on the back side (right side) of the partition plate 10 is a facing main surface 10fs, and the main surface on the front side (left side) is a non-facing main surface 10ns. The back side communication module 21 positioned between the reader / writer 1000 and the partition plate 10 is overlapped on the facing main surface 10fs of the partition plate 10 as a facing side communication module, and is positioned between the reader / writer 1000 and the partition plate 10. The front-side communication module 11 not to be stacked is superimposed on the non-face-to-face main surface 10 ns of the partition plate 10 as a non-face-to-face communication module. Note that the slide movement direction of the IC card 100 indicated by the arrow symbol in FIG. 10 may be slightly inclined (for example, within a range of ± 15 ° in the vertical direction).

  At this time, the antenna 21A of the facing communication module 21 (backside communication module) can communicate with the antenna 1000A of the reader / writer 1000 in a predetermined frequency range in a microwave band (for example, a standard frequency of 920 MHz). Specifically, the antenna 21A receives an electromagnetic wave signal for RFID from the antenna 1000A as a frequency range in which communication (transmission / reception) is possible, for example, at 920 MHz ± 50 MHz (or 920 MHz ± 5%), and responds toward the antenna 1000A. A signal can be transmitted (see FIG. 11).

  The antenna communication distance L between the antenna 21A of the face-to-face communication module 21 (back side communication module) and the antenna 1000A of the reader / writer 1000, and the antenna 11A of the non-face-to-face communication module 11 (front side communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L ′ between the two is set to 3 cm or less. As described above, the antenna communication distances L and L ′ are equal to or less than the wavelength λ of the RFID electromagnetic wave emitted from the reader / writer 1000 (wavelength λ≈33 cm at the standard frequency 920 MHz) (0 <L ≦ λ, 0 <L ′ ≦ λ). ) To 1 wavelength (unit wave) change in electric field / magnetic field (change in magnetic flux) is directly transmitted as a signal between the antenna 1000A of the reader / writer 1000 and the antennas 11A and 21A of the communication modules 11 and 21. .

  Then, a magnetic flux coupling is generated only between the antenna 11A of the facing communication module 11 in FIG. 8 (or the antenna 21A of the facing communication module 21 in FIG. 10) and the antenna 1000A of the reader / writer 1000, and the microwave RFID is used. In order to enable individual transmission / reception of electromagnetic wave signals for use, the IC card 100 further includes a structure as described below.

  When the microwave IC card 100 is seen through from the overlapping direction in FIG. 8 (or FIG. 10), the partition plate 10 includes the antenna 11A (or 21A) and the non-facing side of the facing communication module 11 (or 21). A through hole 10H as an open area is formed by being removed in a hole shape so as to partially overlap the antenna 21A (or 11A) of the communication module 21 (or 11) (see FIGS. 2 and 3). ).

  Specifically, the through hole 10H shown in FIG. 8 (or FIG. 10) is a planar antenna 11A (or 21A) of the facing communication module 11 (or 21) projected onto the facing main surface 10fs of the partition plate 10. Or 21A) and a part of the planar antenna 21A (or 11A) of the non-face-to-face communication module 21 (or 11) projected onto the non-face-side main surface 10ns. One circular hole is formed (see FIGS. 2 and 3). The maximum hole diameter, that is, the diameter D (D ≦ 10 mm in this embodiment) of the through hole 10H is smaller than the wavelength λ (λ≈33 cm in this embodiment) of the microwave that is an electromagnetic wave for RFID emitted from the reader / writer 1000. (D <λ).

  As shown in FIGS. 2 and 3, when the IC card 100 is seen through from the overlapping direction, the outer peripheral edge of the partition plate 10 is retracted and arranged inside the outline of the IC card 100. Further, the outer peripheral edges of the front-side communication module 11 and the back-side communication module 21 are respectively retracted from the outer peripheral edge of the partition plate 10 (see FIGS. 4 and 5).

  Similarly, as shown in FIGS. 2 and 3, when the IC card 100 is seen through from the overlapping direction, the front-side insulating sheet 12 and the back-side insulating sheet 22 correspond to the front-side communication module 11 and the back-side communication module 21 corresponding to the respective outer peripheral edges. It is formed in a larger size and is held in a state of closing (or covering) the through hole 10H of the partition plate 10 (see FIGS. 4 and 5). In this embodiment, both the front-side insulating sheet 12 and the back-side insulating sheet 22 have the same shape and size as the inner shape lines of the peripheral wall portions 15W and 25W of the frame plates 15 and 25 (see FIG. 1).

  8 and 10, by providing the through hole 10H in the partition plate 10, an eddy current is generated on the facing main surface 10fs of the partition plate 10 due to the electromagnetic wave signal for RFID from the reader / writer 1000 and counteracts. It is possible to prevent or suppress a phenomenon that generates a magnetic field. Further, the through hole 10H is generated from the facing main surface 10fs and propagates through the partition plate 10 to reach the non-facing side main surface 10ns, or from the RFID electromagnetic wave signal from the reader / writer 1000 by the microwave. The phenomenon of generating a magnetic field on the non-facing side main surface 10 ns can also be inhibited by the function of breaking the eddy current generated on the non-facing side main surface 10 ns around the outside of 10.

  Thus, the through hole 10H complements the attenuation or shielding action of the partition plate 10 against electromagnetic waves. That is, through the through-hole 10H, only the facing communication module 11 in FIG. 8 and only the facing communication module 21 in FIG. 10 receive the RFID electromagnetic wave signal from the reader / writer 1000, and the response signal to the reader / writer The function of sending to 1000 is given. Therefore, the through-hole 10H enables individual transmission / reception of RFID electromagnetic wave signals by microwaves as shown in FIGS.

  By the way, when the IC card 100 is seen through from the stacking direction in FIG. 5, the front side communication module 11 and the back side communication module 21 are inside the horizontally long rectangular card outline, and the short side direction (ie, the vertical direction, FIG. 5). In the left-right direction) are offset from each other (齟齬). Specifically, the shape of the antenna 11A of the front side communication module 11 is not symmetrical (line symmetric) but has a dimensional difference in the short side direction. The same applies to the antenna 21A of the back side communication module 21.

  More specifically, when viewed in the short side direction of the IC card 100, that is, in the width direction of the antenna 11A, the connection position between the antenna 11A and the IC chip body 11M is not in the center in the width direction, and d2−d1 = d. There is a dimensional difference (in this embodiment, a deviation of d≈0.5 mm) (see FIGS. 2 and 3). Accordingly, the front-side communication module 11 and the back-side communication module 21 having the same specifications are arranged back to back, so that the offset amount d between the two communication modules 11 and 21, in other words, the antennas 11 </ b> A of the two communication modules 11 and 21, A distance d between the connection points of 21A and the IC chip bodies 11M and 21M, more specifically, a separation distance d is provided in the card short side direction of both IC chip bodies 11M and 21M.

  Therefore, in FIG. 8 (or FIG. 10), the electromagnetic wave signal for RFID transmitted from the antenna 1000A of the reader / writer 1000 is transmitted through the facing communication module 11 (or 21) and the facing insulating sheet 12 (or 22) and separated. Even when trying to pass through the through-hole 10H of the plate 10, the passage itself is hindered because the diameter D is smaller than the wavelength λ, and the magnetic field necessary for generating electromotive force in the non-face-to-face communication module 21 (or 11) is difficult to reach. . Even if part of the electromagnetic wave signal for RFID reaches the antenna 21A (or 11A) of the non-face-to-face communication module 21 (or 11) via the through hole 10H, the difference in antenna communication distance with the reader / writer 1000 The non-facing communication module 21 (or 11) and the facing communication module 11 (or 21) have a difference in receiving / transmitting timing due to L′−L and the offset amount d described above, and therefore malfunction due to poor response is Avoided.

  Due to the presence of the through hole 10H, the back side coating layer 25Z, and the front side coating layer 15Z described above, the non-facing communication module 21 and the reader / writer 1000 in FIG. 8 and the non-facing communication module 11 in FIG. Magnetic flux coupling is less likely to occur with the reader / writer 1000. Therefore, the through-hole 10H, the back-side coating layer 25Z, and the front-side coating layer 15Z enable individual transmission / reception of RFID electromagnetic wave signals by microwaves as shown in FIGS.

  Here, the first embodiment is arranged as follows regarding the individual transmission / reception mode of the electromagnetic wave signal for RFID between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back side communication module and the antenna of the reader / writer. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 8, 10, and 14), the solid line indicates that magnetic flux coupling is established, and the broken line indicates that magnetic flux coupling is not established.

(First Mode) Individual Transmission / Reception Between Front-side Communication Module 11 and Reader / Writer 1000 <FIGS. 8 and 9>
When the magnetic flux coupling described in [A] below is established and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur, the facing communication module, that is, the front communication module 11 and the reader / writer 1000, magnetic flux coupling is generated, and it is possible to individually transmit and receive an electromagnetic wave signal for RFID using microwaves.
[A] When a transmission signal (for example, a read command signal) by a microwave from the antenna 1000A of the reader / writer 1000 is received by the antenna 11A, an electromotive force is generated in the front side communication module 11, and transmission / reception timing controlled by the data processing unit 1000C The response signal (for example, the data signal read from the data storage unit 11M2 of the front side communication module 11) transmitted from the antenna 11A is received by the antenna 1000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surface 10fs of the partition plate 10 is blocked or suppressed by the through hole 10H.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface 10 fs to the non-facing side main surface 10 ns or an eddy current generated on the non-facing side main surface 10 ns due to a transmission signal that circulates outside the partition plate 10, It is inhibited by the through hole 10H and the back side coating layer 25Z.
[C] The diameter D <wavelength λ prevents the transmission signal from passing through the through-hole 10H, and a magnetic field necessary for generating an electromotive force in the non-face-to-face communication module, that is, the back-side communication module 21, is difficult to reach.
[D] The non-face-to-face communication module (here, the back-side communication module 21) and the face-to-face communication module (here, the front-side communication module 11) due to the difference in antenna communication distance L′−L and the presence of the offset amount d between the communication modules. Causes a difference in transmission / reception timing, so that malfunction based on poor response is avoided.

(Second Mode) Individual Transmission / Reception Between Backside Communication Module 21 and Reader / Writer 1000 <FIGS. 10 and 11>
When the magnetic flux coupling described in [B] below is established and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur, the facing communication module, that is, the back communication module Magnetic flux coupling is generated only between the reader 21 and the reader / writer 1000, and the RFID electromagnetic wave signal can be individually transmitted and received by microwaves.
[B] When a transmission signal (for example, a read command signal) by a microwave from the antenna 1000A of the reader / writer 1000 is received by the antenna 21A, an electromotive force is generated in the back side communication module 21, and transmission / reception timing controlled by the data processing unit 1000C The response signal transmitted from the antenna 21A (for example, the data signal read from the data storage unit 21M2 of the back side communication module 21) is received by the antenna 1000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surface 10fs of the partition plate 10 is blocked or suppressed by the through hole 10H.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface 10 fs to the non-facing side main surface 10 ns or an eddy current generated on the non-facing side main surface 10 ns due to a transmission signal that circulates outside the partition plate 10, It is inhibited by the through hole 10H and the front side coating layer 15Z.
[C] The diameter D <wavelength λ inhibits the transmission signal from passing through the through-hole 10H, and the magnetic field necessary for generating electromotive force in the non-face-to-face communication module, that is, the front-side communication module 11, is difficult to reach.
[D] The non-face-to-face communication module (here, the front-side communication module 11) and the face-to-face communication module (here, the back-side communication module 21) due to the difference in antenna communication distance L′−L and the presence of the offset amount d between the communication modules. Causes a difference in transmission / reception timing, so that malfunction based on poor response is avoided.

(Third Aspect) Simultaneous individual transmission / reception between the front side communication module 11 and the first reader / writer 1000 and between the back side communication module 21 and the second reader / writer 2000 <FIG. 14>
A second reader / writer 2000 having a planar antenna 2000A facing the backside communication module 21 and capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A is referred to as the first reader / writer 1000. Is the case of arranging separately.
Even in this case, the magnetic flux coupling described in [A] and [B] below is established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. Magnetic flux coupling occurs only between the front-side communication module 11 and the first reader / writer 1000, and between the back-side communication module 21 and the second reader / writer 2000, and simultaneous and simultaneous individual transmission / reception of RFID electromagnetic wave signals by microwaves. Is possible.

[A] When a transmission signal (for example, a read command signal) by a microwave from the antenna 1000A of the first reader / writer 1000 is received by the antenna 11A, an electromotive force is generated in the facing communication module, that is, the front communication module 11, and a predetermined value is generated. A response signal (for example, a data signal read from the data storage unit 11M2 of the front side communication module 11) transmitted from the antenna 11A at the transmission / reception timing is received by the antenna 1000A.
[B] When a transmission signal (for example, a read command signal) by the microwave from the antenna 2000A of the second reader / writer 2000 is received by the antenna 21A, an electromotive force is generated in the face-to-face communication module, that is, the back-side communication module 21, and predetermined The response signal transmitted from the antenna 21A at the transmission / reception timing (for example, the data signal read from the data storage unit 21M2 of the back side communication module 21) is received by the antenna 2000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface of the partition plate 10 is blocked or suppressed by the through hole 10H.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface to the non-facing side main surface or an eddy current generated on the non-facing side main surface by a transmission signal that goes around the outside of the partition plate 10 This is hindered by the back side coating layer 25Z and the front side coating layer 15Z.
[C] The diameter D <wavelength λ prevents the transmission signal from passing through the through-hole 10H, and the magnetic field necessary for generating an electromotive force in the non-face-to-face communication module is difficult to reach.
[D] The non-face-to-face communication module and the face-to-face communication module have a difference in receiving / transmitting timing due to the difference L′−L in the antenna communication distance and the offset amount d between the communication modules. Operation is avoided.

  Therefore, in the third mode shown in FIG. 14, the data reading or writing operation executed by the first reader / writer 1000 on the first data storage unit 11M2 provided in the IC chip body 11M of the front side communication module 11 is performed. The data reading or writing operation executed by the second reader / writer 2000 can be simultaneously processed in parallel with respect to the second data storage unit 21M2 provided in the IC chip body 21M of the back side communication module 21.

  In this way, data access (reading or writing) can be performed simultaneously on the data storage units 11M2 and 21M2 of the pair of communication modules 11 and 21 using the two reader / writers 1000 and 2000, thereby speeding up data processing. Can be achieved. At this time, the first and second reader / writers 1000 and 2000 transmit signals of the same output in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) to the front-side communication module 11 and the back-side communication module 21. In addition, the antenna communication distances L and L ′ between the corresponding communication modules 11 and 21 and the reader / writers 1000 and 2000 may be the same.

  As described above, in the first embodiment, a pair of communication modules 11 and 21 having a planar antenna and a partition plate 10 having a circular through hole 10H are provided, and window frames are provided on both sides of the partition plate 10 therebetween. Frame plates 15 and 25 are symmetrically arranged, and the inner peripheral wall surfaces of the respective frame plates 15 and 25 are covered with the covering layers 15Z and 25Z, thereby generating eddy currents on the facing main surface of the partition plate 10 and Propagation and generation of eddy currents on the non-face-to-face main surface is prevented or suppressed, and for example, an IC card 100 compatible with an electromagnetic wave signal for RFID in a microwave band can be obtained easily and inexpensively. At this time, the antenna communication distances L and L ′ are set to be equal to or shorter than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ). Changes in the electric and magnetic fields are directly transmitted as signals between the antennas 1000A and 2000A of the reader / writers 1000 and 2000 and the antennas 11A and 21A of the communication modules 11 and 21, making it easy to individually transmit and receive RFID electromagnetic signals. realizable. In addition, when aligning one circular through hole 10H with respect to the pair of communication modules 11 and 21, if the center of the through hole 10H is used as a reference point, the partition plate 10 and the communication modules 11 and 21 are connected. Can be easily aligned.

  In addition, the through hole 10H provided in the partition plate 10 is formed so that the diameter D is smaller than the wavelength λ (D <λ) and overlaps with the antennas 11A and 21A of both communication modules 11 and 21 only partially. Since it is arranged, even if it is a microwave with strong directivity and straightness, the radio wave reaching the antenna of the non-face-to-face communication module is limited and attenuated when passing through such a through hole 10H. Therefore, the antenna of the non-face-to-face communication module does not generate an electromotive force that enables transmission / reception with the reader / writers 1000 and 2000. That is, since only a weak electromotive force is generated, the IC chip body of the non-face-to-face communication module cannot be activated. Even if it is activated, transmission (reply) to the reader / writer 1000 or 2000 cannot be performed.

  In addition, the partition plate 10 made of aluminum foil is moved away from the outer shape of the card, and the outer peripheral edges of both communication modules 11 and 21 are retracted inward from the outer peripheral edge of the partition plate 10. This prevents the partition plate 10 from coming into contact with an external metal member and prevents an abnormal current from flowing into the IC card 100 due to grounding or short-circuiting, and wraps around the outside of the partition plate 10 to reach the non-facing main surface. The electromagnetic wave signal for RFID can be attenuated or shielded.

  Moreover, the front side insulating sheet 12 and the back side insulating sheet 22 are formed larger than the corresponding front side communication module 11 and back side communication module 21 at the outer peripheral edges, and the partition plate 10 is closed by closing the through hole 10H of the partition plate 10. And the communication modules 11 and 21 can be reliably separated to enhance the insulation effect. And since the through-hole 10H of the partition plate 10 is closed with the insulating sheets 12 and 22 from both sides, the molding plates 13 and 23 (or the insulating sheets 12 and 22) corresponding to the front-side communication module 11 and the back-side communication module 21 at the time of assembly. It is possible to prevent the adhesive or the like applied for fixing the position to the fluid from flowing into the through holes 10H when the two molded plates 13 and 23 are heat-sealed.

  Further, the outer peripheral edges of both the insulating sheets 12 and 22 are retracted to the inside of the card outer shape and are disposed inside the covering layers 15Z and 25Z of the frame plates 15 and 25, so that moisture (external to the IC card 100) ( Rain water, user sweat, etc.) are prevented from penetrating into the inside via the insulating sheets 12, 22, and the peripheral edges of the frame plates 15, 25 are prevented from being heat-sealed outside the partition plate 10. Absent.

  FIG. 12 shows an example of the surface image of the IC card 100, and an image display unit 130 and a number display unit 131 are provided on the surface of the front side molding plate 13. In this embodiment, a picture of the cardholder is printed on the image display unit 130, and a plurality (for example, two) of identification numbers (ID No.) of the cardholder are displayed on the number display unit 131. Specifically, in the number display unit 131, the first identification number stored in the form of identification number code data in the data storage unit 11M2 (see FIG. 9) of the front side communication module 11 and the data storage of the back side communication module 21 are stored. The second identification number stored in the form of identification number code data is displayed side by side on the part 21M2 (see FIG. 11).

  On the other hand, FIG. 13 shows an example of the back surface image of the IC card 100, and the signature portion 230 and the first and second barcode printing portions 231F and 231R are provided on the back surface of the back side molding plate 23. The signature part 230 is a card entry sign entry field. The first barcode printing unit 231F prints and displays the first identification number in the form of a one-dimensional and / or two-dimensional barcode, and the second barcode printing unit 231R displays the first identification number. The two identification numbers are printed and displayed in the form of one-dimensional and / or two-dimensional barcodes. In this embodiment, in order to allow the IC card 100 to be used as a conventionally known magnetic stripe card, a magnetic stripe type memory unit 232 is provided, and the first and second described above are also included therein. The identification number is stored in the form of magnetic memory.

  By the way, the IC chip bodies 11M and 21M of the front side communication module 11 of the IC card 100 and the back side communication module 21 store data for storing two-dimensional or three-dimensional image data, audio data, and identification number code data for personal authentication. Units 11M2 and 21M2 are provided respectively (see FIGS. 9 and 11). Among these personal authentication data, the image data is stored as a photograph printed and displayed on the image display unit 130. Further, the identification number code data stores the first and second identification numbers, and corresponds to the codes printed on the number display unit 131 and the barcodes printed on the barcode printing units 231F and 231R. . These personal authentication data are read from the data storage units 11M2 and 21M2 by the reader / writers 1000 and 2000 (see FIGS. 8 to 11 and 14) or written to the data storage units 11M2 and 21M2.

  As described above, since personal authentication data such as image data can be incorporated in each of the front side communication module 11 and the back side communication module 21 (IC chip main bodies 11M and 21M), a user ID, password, and password that have been conventionally used. It is possible to dramatically improve the security function by using together with a check code such as. For audio data, for example, it is possible to increase the authentication accuracy by simultaneously reproducing with image data, or to enhance the presentation effect by making composite data such as an animated video with audio.

(Second embodiment)
A second embodiment of the IC card according to the present invention is shown in FIGS. 15 is an exploded perspective view schematically showing the IC card, FIG. 16 is a partially broken plan view, FIG. 17 is a partially broken bottom view, and FIG. 18 is a sectional view taken along line XVIII-XVIII in FIG. In the IC card 200 of the second embodiment, the form of the antenna mainly provided in the communication module and the form of the open area through which the partition plate is removed are changed with respect to the IC card 100 of the first embodiment.

The IC card 200 shown in FIGS. 15 to 18 is a single IC card used for non-contact short-range wireless communication in the proximity RFID system, in which the following constituent materials are heated and pressed after being laminated. Are formed on a single horizontally-long rectangular card of ID-1 size (width 85.60 mm × length 53.98 mm).
(1) A partition plate 310 (partition member) formed into a horizontally long rectangular shape in the form of a flat sheet or film;
(2) A horizontally-long rectangular front-side communication module 311 disposed so as to be opposed to the front main surface (upper surface in FIG. 15 ) and the rear main surface (lower surface in FIG. 15 ) of the partition plate 310 in plan view. Back side communication module 321 (first and second communication members);
(3) Between the partition plate 310 and the front-side communication module 311 and between the partition plate 310 and the back-side communication module 321, an electrical insulating space (gap) corresponding to its own thickness is provided between them. The horizontally long front side insulating sheet 12 and the back side insulating sheet 22 (first and second insulating members) to be formed;
(4) The front-side frame plate 115 and the back-side frame plate 125 (first and second frame members) arranged in contact with each other so as to sandwich the front-side main surface and the back-side main surface of the partition plate 310;
(5) A horizontally-long rectangular front-side molded plate that is disposed outside the front-side frame plate 115 and the back-side frame plate 125 and outside the front-side communication module 311 and the back-side communication module 321, and holds the modules 311 and 321 in position. 13 and the back side shaping | molding board 23 (1st and 2nd shaping | molding member).

  The front protective sheet 14 and the back protective sheet 24 (first and second protective members) are as described in the first embodiment. Further, the thickness of each component of the IC card 200 is substantially the same as described in the first embodiment.

  The partition plate 310 is located at a substantially central portion in the thickness direction of the IC card 200, has conductivity and attenuates or shields against electromagnetic waves (or can be rephrased as a reflecting action by a function of drawing and radiating electromagnetic waves). It is comprised with the nonmagnetic body (namely, paramagnetic body or diamagnetic body) which has. Here, a thin aluminum plate which is a paramagnetic material and has a thickness of 0.1 mm or less, that is, a flat aluminum foil is used. The partition plate 310 is separated (divided) into a left partition plate 310L (partition member) and a right partition plate 310R (partition member) by a linear groove (a slit 310S described later) that extends in the short side direction.

  The front-side communication module 311 includes an IC chip body 311M having a data storage function and a communication control function, and an antenna 311A having a signal transmission / reception function. The IC chip body 311M and the antenna 311A are mounted on a wiring board 311S as a base. (See FIG. 16). Similarly, the back side communication module 321 includes an IC chip body 321M having a data storage function and a communication control function, and an antenna 321A having a signal transmission / reception function, and the IC chip body 321M and the antenna 321A serve as a base wiring board 321S. (See FIG. 17).

  In this embodiment, the front-side communication module 311 and the back-side communication module 321 have the same specifications, and the wiring board 311S and the wiring board 321S have a rectangular shape similar to the card outline, and the same outline has a plan view. They are arranged so as to overlap each other at almost the same position (see FIGS. 16 and 17). The antennas 311A and 321A of the pair of communication modules 311 and 321 are loop (or coil) antennas that circulate a plurality of times (four times in the drawing) in a rectangular spiral shape over almost the entire surface of the corresponding wiring boards 311S and 321S. . The pair of IC chip bodies 311M and 321M are respectively connected to corresponding rectangular loop antennas 311A and 321A at corner corners that are diagonal positions in plan view.

  The antennas 311A and 321A and the IC chip bodies 311M and 321M are formed on the surfaces of the corresponding wiring boards 311S and 321S by screen printing using a mesh such as a silk screen, a paint screen, or a stencil screen. Specifically, the front side wiring board 311S and the back side wiring board 321S are made of, for example, polyvinyl chloride (PVC) resin, acrylonitrile / butadiene / styrene (ABS) resin, polyethylene / terephthalate (PET) resin, polyimide (PI) resin or the like. The sheet is made of a flexible thermoplastic resin sheet, and is adhered and fixed to the inner surfaces of the corresponding front side molding plate 13 and back side molding plate 23 with an adhesive or the like (see FIG. 15).

  Note that the IC chip main bodies 311M and 321M may be mounted (mounted and fixed) at corners that are diagonal positions in plan view of the antennas 311A and 321A printed on the wiring boards 311S and 321S. Further, the antennas 311A and 321A and the IC chip bodies 311M and 321M may be mounted as discrete circuits on the wiring boards 311S and 321S, or the antennas 311A and 321A may be configured by embedding, etching, plating, or the like.

  For example, silicone (SI) paper, which is a kind of thermosetting resin, is used for the front-side insulating sheet 12 and the back-side insulating sheet 22, and between the partition plate 310 and the front-side communication module 311, and between the partition plate 310 and the back-side communication module 321. The communication modules 311 and 321 are given an electrical insulation state by filling a gap (insulation space) between them. Further, the front-side communication module 311 and the back-side communication module 321 are disposed so as to face the front-side and back-side main surfaces of the partition plate 310 and overlap each other in plan view through the front-side insulating sheet 12 and the back-side insulating sheet 22.

  The front side molding plate 13 and the back side molding plate 23 are made of a thermoplastic resin having electrical insulation and mechanical strength, such as acrylic (methacrylic; PMMA) resin. Moreover, the front side protective sheet 14 and the back side protective sheet 24 are comprised by thermoplastic resin transparent sheets, such as a polyethylene terephthalate (PET) resin, for example. Further, the molded plates 13 and 23 and the protective sheets 14 and 24 are arranged so as to overlap the partition plate 310, the frame plates 115 and 125, the communication modules 311 and 321 and the insulating sheets 12 and 22, respectively, in a plan view.

  The front side frame plate 115 and the back side frame plate 125 are made of a thermoplastic resin (for example, acrylic (methacrylic; PMMA) resin) having electrical insulation and mechanical strength, like the front side molding plate 13 and the back side molding plate 23. Composed. The frame plates 115 and 125 are formed in a window frame shape along the sides of the rectangular shape whose peripheral wall portions 115W and 125W (first and second peripheral wall portions) form the outer shape of the card. And the back side) are arranged in contact with each other so as to sandwich the main surface. That is, the outlines of the peripheral walls 115W and 125W of the frame plates 115 and 125 are the same shape (congruent figure) as the outlines of the forming plates 13 and 23. On the other hand, the inner shape lines of the peripheral wall portions 15W and 25W of the frame plates 15 and 25 are the same shape (congruent figure) as the outer shape lines of the insulating sheets 12 and 22. In addition, the outline of the partition plate 310 is located between the outer shape lines and the inner shape lines of the peripheral wall portions 115W and 125W of the frame plates 115 and 125 (see FIG. 19).

  Therefore, in the front side frame plate 115 arranged in contact with the front side main surface of the partition plate 310, the front side communication module 311 and the front side insulating sheet 12 are accommodated in the internal space of the front side peripheral wall portion 115W, and the front side molded plate 13 covers the lid. It becomes a form to do. Similarly, in the back side frame plate 125 arranged in contact with the back side main surface of the partition plate 310, the back side communication module 321 and the back side insulating sheet 22 are accommodated in the internal space of the back side peripheral wall portion 125W, and the back side molding plate 23 is the lid. It becomes a form to do.

  The inner peripheral wall surface of the front side peripheral wall 115W is covered with a front side coating layer 115Z (first electromagnetic wave shielding layer) having a predetermined thickness (for example, 0.01 to 0.5 mm). It has a function of blocking or suppressing an electromagnetic wave signal for RFID that wraps around the outside and reaches the front peripheral wall portion 115W (see FIGS. 21 and 22). Similarly, the inner peripheral wall surface of the back side peripheral wall portion 125W is covered with a back side coating layer 125Z (second electromagnetic shielding layer) having a predetermined thickness (for example, 0.01 to 0.5 mm). It has the function of blocking or suppressing the electromagnetic wave signal for RFID that wraps around the outside and reaches the back side peripheral wall portion 125W (see FIGS. 20 and 22).

  Here, referring to FIG. 6 of the first embodiment for an example of the manufacturing process of the frame plate, FIG. 7 of the first embodiment and FIG. 19 of the present embodiment for an example of the assembly process of the frame plate and the partition plate. The outline of these will be described with reference to FIG. 7 and 19, the thickness of the partition plates 10 and 310 is omitted.

<Cutting step> (FIG. 6A)
An insulating synthetic resin plate (for example, a transparent acrylic plate) having a predetermined thickness (for example, 0.3 mm) is cut into the same shape as the outer shape of the card to form a rectangular plate P1.

<Punching process> (FIG. 6B)
The inside of the rectangular plate P1 is punched into the same shape as the outline of the insulating sheets 12 and 22 (see FIG. 15), and the window frame plate P2 is made.

<Inner wall surface covering step> (FIG. 6C)
A large number (for example, 100 or more) of window frame plates P2 are stacked, and a plating process or a coating process is performed over the entire circumference (all four faces) of the inner peripheral wall surface to form a coating layer. In this embodiment, the nozzle N rotates and moves up and down inside the stacked window frame plate P2, and is spray-coated with an electromagnetic wave shielding paint which is a kind of conductive paint and contains copper as a diamagnetic material. Thus, the entire inner peripheral wall surface of each window frame plate P2 is coated all at once with a coating film PL (coating layer) having a predetermined thickness (for example, 0.1 mm), and a large number of coating film forming plates P3 are formed in a stacked state. .

<Superposition process> (FIG. 7D)
The partition plate 10 is sandwiched between the two coating film forming plates P3 and P3 taken out from the products manufactured in the inner peripheral wall surface coating step.

<Crimping process> (FIG. 19)
Adhesive is applied to each facing surface of the front side frame plate 115 (coating film forming plate P3), the partition plate 10, and the back side frame plate 125 (coating film forming plate P3), or is heated and pressed without being applied and is pressure-bonded. . After the frame plates 115 and 125 and the partition plate 10 are pressure-bonded, a short wave slit 310S, which will be described later, is cut and formed, and the partition plate 310 separated into the left partition plate 310L and the right partition plate 310R as shown in FIG. It becomes. At this time, the front frame plate slit 115S is simultaneously cut and formed in the front frame plate 115 to separate the left front frame plate 115L and the right front frame plate 115R, and the back frame plate 125 also has a rear frame plate slit. 125S is cut and formed at the same time and separated into a left back frame plate 125L and a right back frame plate 125R.

  As shown in FIG. 20, when the reader / writer 1000 fixedly arranged communicates with the front-side communication module 311 on the front side (upper side in the figure) of the IC card 200 that slides along the main surface (left and right in the figure), The main surfaces on the front side (upper side) of the partition plates 310L and 310R (310) are facing main surfaces 310Lfs and 310Rfs, and the main surfaces on the back side (lower side) are non-facing main surfaces 310Lns and 310Rns. The front-side communication module 311 positioned between the reader / writer 1000 and the partition plates 310L and 310R (310) is superimposed on the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R as a facing-side communication module, and the reader / writer 1000 And the rear side communication module 321 which is not located between the partition plates 310L and 310R (310) and the non-face side main surfaces 310Lns and 310Rns of the partition plates 310L and 310R (310) as a non-face-to-face communication module. Note that the slide movement direction of the IC card 200 indicated by the arrow symbol in FIG. 20 may be slightly inclined (for example, within a range of ± 15 ° in the left-right direction).

  At this time, the antenna 311A of the facing communication module 311 (front communication module) is predetermined in the antenna 1000A of the reader / writer 1000 (configured by a loop antenna similar to the antenna 311A) and a short wave band (for example, standard frequency 13.56 MHz). It is possible to communicate in the frequency range. Specifically, the antenna 311A receives an RFID electromagnetic wave signal from the antenna 1000A at a frequency range in which communication (transmission / reception) is possible, for example, at 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), A response signal can be transmitted toward the antenna 1000A.

  The antenna communication distance L between the antenna 311A of the face-to-face communication module 311 (front-side communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 321A of the non-face-to-face communication module 321 (back-side communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L ′ between the two is set to 3 cm or less. As described above, the antenna communication distances L and L ′ are equal to or less than the wavelength λ of the electromagnetic wave for RFID emitted from the reader / writer 1000 (wavelength λ≈22 m at the standard frequency 13.56 MHz) (0 <L ≦ λ, 0 <L ′). ≦ λ) to one wavelength (unit wave) change in electric and magnetic fields (change in magnetic flux) is directly transmitted as a signal between the antenna 1000A of the reader / writer 1000 and the antennas 311A and 321A of the communication modules 311 and 321. Is done.

  As shown in FIG. 21, when the reader / writer 1000 fixedly arranged communicates with the back side communication module 321 on the back side (lower side in the figure) of the IC card 200 that slides along the main surface (left and right in the figure). The main surfaces on the back side (lower side) of the partition plate 310 are facing main surfaces 310Lfs and 310Rfs, and the main surfaces on the front side (upper side) are non-facing side main surfaces 310Lns and 310Rns. The back-side communication module 321 positioned between the reader / writer 1000 and the partition plate 310 is superimposed on the facing main surfaces 310Lfs and 310Rfs of the partition plate 310 as a facing-side communication module, and between the reader / writer 1000 and the partition plate 310. The front-side communication module 311 that is not positioned on the non-face-to-face communication module 311 is superimposed on the non-face-to-face main surfaces 310Lns and 310Rns of the partition plate 310. 21 may be slightly inclined (for example, within a range of ± 15 ° in the left-right direction).

  At this time, the antenna 321A of the facing communication module 321 (backside communication module) can communicate with the antenna 1000A of the reader / writer 1000 in a predetermined frequency range in a short wave band (for example, standard frequency 13.56 MHz). Specifically, the antenna 321A receives an RFID electromagnetic wave signal from the antenna 1000A at a frequency range in which communication (transmission / reception) is possible, for example, at 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), and A response signal can be transmitted toward the antenna 1000A.

  The antenna communication distance L between the antenna 321A of the face-to-face communication module 321 (back side communication module) and the antenna 1000A of the reader / writer 1000, and the antenna 311A of the non-face-to-face side communication module 311 (front side communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L ′ between the two is set to 3 cm or less. As described above, the antenna communication distances L and L ′ are equal to or less than the wavelength λ of the electromagnetic wave for RFID emitted from the reader / writer 1000 (wavelength λ≈22 m at the standard frequency 13.56 MHz) (0 <L ≦ λ, 0 <L ′). ≦ λ) to one wavelength (unit wave) change in electric and magnetic fields (change in magnetic flux) is directly transmitted as a signal between the antenna 1000A of the reader / writer 1000 and the antennas 311A and 321A of the communication modules 311 and 321. Is done.

  Then, the magnetic flux coupling is generated only between the antenna 311A of the facing communication module 311 in FIG. 20 (or the antenna 321A of the facing communication module 321 in FIG. 21) and the antenna 1000A of the reader / writer 1000, so In order to enable individual transmission and reception of electromagnetic wave signals, the IC card 200 further has a structure as described below.

  In FIG. 20 (or FIG. 21), when the IC card 200 for short waves is seen through from the overlapping direction, the antennas 311A (or 321A) and the non-facing surfaces of the facing communication module 311 (or 321) are placed on the partition plates 310L and 310R. A slit 310S serving as an open area is formed so as to be partially removed so as to partially overlap the antenna 321A (or 311A) of the side communication module 321 (or 311) (see FIGS. 16 and 17).

  Specifically, the slit 310S shown in FIG. 20 (or FIG. 21) is a loop shape of the facing communication module 311 (or 321) projected onto the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R. A part of the antenna 311A (or 321A) and a part of the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) projected onto the non-face-to-face main surfaces 310Lns and 310Rns are simultaneously traversed at two locations. In this state, a single slit 310S is formed (see FIGS. 16 and 17). The maximum value of the antenna transverse width of the slit 310S, that is, the maximum transverse width W (W ≦ 10 mm in this embodiment) is a wavelength λ of a short wave which is an electromagnetic wave for RFID emitted from the reader / writer 1000 (λ≈22 m in this embodiment). ) (W <λ).

  As shown in FIGS. 16 and 17, when the IC card 200 is seen through from the overlapping direction, the outer peripheral edges of the partition plates 310 </ b> L and 310 </ b> R (310) are retracted and arranged inside the outline of the IC card 200. Further, the outer peripheral edges of the front-side communication module 311 and the back-side communication module 321 are disposed so as to be retracted inward from the outer peripheral edges of the partition plates 310L and 310R (310) (see FIG. 18).

  Similarly, as shown in FIGS. 16 and 17, when the IC card 200 is seen through from the overlapping direction, the front-side insulating sheet 12 and the back-side insulating sheet 22 have the front-side communication module 311 and the back-side communication module 321 corresponding to the respective outer peripheral edges. It is formed in a larger size and is held in a state of closing (or covering) the slit 310S of the partition plates 310L and 310R (310) (see FIG. 18). In this embodiment, both the front side insulating sheet 12 and the back side insulating sheet 22 are formed by combining the peripheral walls 115W and 125W of the frame plates 115L, 115R, 125L, and 125R with the slits 115S and 125S. And the size is the same (see FIG. 15).

  20 and 21, by providing the partition plate 310 with the slit 310S, eddy currents are generated on the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R due to the electromagnetic wave signal for RFID generated by the short wave from the reader / writer 1000. This makes it possible to prevent or suppress the phenomenon that generates a demagnetizing field. Further, the slit 310S is generated by the facing main surfaces 310Lfs and 310Rfs, propagates through the partition plates 310L and 310R and reaches the non-facing side main surfaces 310Lns and 310Rns, and an electromagnetic wave signal for RFID due to a short wave from the reader / writer 1000. Among them, the function of cutting around the outside of the partition plates 310L and 310R and dividing the eddy current generated on the non-facing side main surfaces 310Lns and 310Rns can also inhibit the phenomenon of generating a magnetic field on the non-facing side main surfaces 310Lns and 310Rns.

  In this way, the slit 310S complements the attenuation or shielding action of the partition plate 310 against electromagnetic waves. That is, by the slit 310S, only the facing communication module 311 in FIG. 20 and only the facing communication module 321 in FIG. 21 receive the RFID electromagnetic wave signal from the reader / writer 1000, and the response signal to the reader / writer 1000. The function to send to is given. Therefore, the slit 310S enables individual transmission and reception of the electromagnetic wave signal for RFID shown in FIG. 20 and FIG.

  By the way, when the IC card 200 is seen through from the overlapping direction in FIG. 18, the front-side communication module 311 and the back-side communication module 321 are inside the horizontally long rectangular card outline, and the long side direction (that is, the horizontal direction, FIG. 18). In the left-right direction) are offset from each other (齟齬). Specifically, the offset amount d between the two communication modules 311 and 321, in other words, the distance d between the connection points of the antennas 311A and 321A of the two communication modules 311 and 321 and the IC chip main bodies 311M and 321M, and in other words A separation distance d is provided in the card long side direction of both IC chip bodies 311M and 321M.

  Accordingly, in FIG. 20 (or FIG. 21), the electromagnetic wave signal for RFID transmitted from the antenna 1000A of the reader / writer 1000 passes through the facing communication module 311 (or 321) and the facing insulating sheet 12 (or 22), and is partitioned. Even when trying to pass through the slit 310S of the plate 310, since the maximum transverse width W is smaller than the wavelength λ, the passage itself is hindered, and a magnetic field necessary for generating electromotive force in the non-face-to-face communication module 321 (or 311) arrives. Hateful. Even if part of the electromagnetic wave signal for RFID reaches the antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) through the slit 310S, the difference L in the antenna communication distance with the reader / writer 1000 '-L and the offset amount d described above cause a difference between the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321), so that malfunction due to poor response is avoided. Is done.

  Further, in FIGS. 16 and 18, the slit 310 </ b> S is an uneven position that is deviated (that is, deviated) from the center in the major axis direction of each of the loop antennas 311 </ b> A and 321 </ b> A in the front-side communication module 311 and the back-side communication module 321. It intersects each of the two long sides of the card outline. Specifically, the width center CS of the slit 310S is provided by being shifted from the center CA in the major axis direction of the loop antennas 311A and 321A by a deviation amount LC.

  Accordingly, in FIG. 20 (or FIG. 21), the magnetic flux passes through the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) placed in the magnetic field of the RFID electromagnetic wave signal from the reader / writer 1000. When passing or moving, an electromotive force is generated by electromagnetic induction in the loop antenna 311A (or 321A) of the facing communication module 311 (or 321). On the other hand, when viewed from the reader / writer 1000 side, the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) is covered with the partition plates 310L and 310R except for the slit 310S, and the slit 310S is not. The face-side communication module 321 (or 311) is provided so as to intersect with the long side of the card at an uneven position that is deviated (deviated) from the center in the long axis direction of the loop antenna 321A (or 311A) of the loop communication module 321 (or 311). Therefore, even if the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) is within the magnetic field of the RFID electromagnetic wave signal from the reader / writer 1000, the magnetic flux passes (moves) unevenly. Therefore, the electromotive force necessary to drive the IC chip body 321M (or 311M) to transmit (reply) to the reader / writer 1000 is not generated.

  Due to the presence of the slit 310S, the back side coating layer 125Z, and the front side coating layer 115Z described above, the non-face-to-face communication module 321 and the reader / writer 1000 in FIG. 20 and the non-face-to-face communication module 311 and the reader in FIG. Magnetic flux coupling is less likely to occur with the writer 1000. Therefore, the slit 310S, the back-side coating layer 125Z, and the front-side coating layer 115Z enable individual transmission and reception of RFID electromagnetic wave signals by short waves as shown in FIGS.

  Here, the fourth embodiment is organized as follows regarding the individual transmission / reception mode of the electromagnetic wave signal for RFID between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back side communication module and the antenna of the reader / writer. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 20 to 22), a solid line indicates that magnetic flux coupling is established and a broken line indicates that magnetic flux coupling is not established.

(First Mode) Individual Transmission / Reception Between Front-side Communication Module 311 and Reader / Writer 1000 <FIG. 20>
When the magnetic flux coupling described in [A] below is established and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur, the facing communication module, that is, the front communication module Magnetic flux coupling is generated only between 311 and the reader / writer 1000, and individual transmission / reception of the electromagnetic wave signal for RFID by short waves becomes possible.
[A] When a transmission signal (for example, a read command signal) by a short wave from the antenna 1000A of the reader / writer 1000 is received by the antenna 311A, an electromotive force is generated in the front side communication module 311, and the antenna is transmitted and received at a transmission / reception timing controlled by the data processing unit. A response signal transmitted from 311A (for example, a data signal read from the data storage unit of the front side communication module 311) is received by the antenna 1000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surfaces 310Lfs and 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] An eddy current propagating from the facing main surfaces 310Lfs and 310Rfs to the non-facing main surfaces 310Lns and 310Rns, and an eddy current generated on the non-facing main surfaces 310Lns and 310Rns by a transmission signal that circulates outside the partition plate 310. The magnetic field generation phenomenon based on the slit 310S and the backside coating layer 125Z is hindered.
[C] Crossing width W <wavelength λ prevents transmission signals from passing through slit 310S, and a magnetic field necessary for generating electromotive force in non-face-to-face communication module, that is, back-side communication module 321, is difficult to reach.
[D] The non-face-to-face communication module (here, the back-side communication module 321) and the face-to-face communication module (here, the front-side communication module 311) due to the difference in antenna communication distance L′−L and the presence of the offset amount d between the communication modules. Causes a difference in transmission / reception timing, so that malfunction based on poor response is avoided.
[E] Since the deviation amount LC is provided in the slit 310S, the loop antenna 321A of the non-face-to-face communication module 321 does not generate an electromotive force.

(Second Aspect) Individual Transmission / Reception Between Backside Communication Module 321 and Reader / Writer 1000 <FIG. 21>
When the magnetic flux coupling described in [B] below is established and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur, the facing communication module, that is, the back communication module Magnetic flux coupling is generated only between 321 and the reader / writer 1000, and individual transmission / reception of the electromagnetic wave signal for RFID by short waves becomes possible.
[B] When a transmission signal (for example, a read command signal) by a short wave from the antenna 1000A of the reader / writer 1000 is received by the antenna 321A, an electromotive force is generated in the back side communication module 321 and the data processing unit 1000C (see FIG. 12) A response signal (for example, a data signal read from the data storage unit of the back side communication module 321) transmitted from the antenna 321A at the transmission / reception timing to be controlled is received by the antenna 1000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surfaces 310Lfs and 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] An eddy current propagating from the facing main surfaces 310Lfs and 310Rfs to the non-facing main surfaces 310Lns and 310Rns, and an eddy current generated on the non-facing main surfaces 310Lns and 310Rns by a transmission signal that circulates outside the partition plate 310. The magnetic field generation phenomenon based on the slit 310S and the front side coating layer 115Z is hindered.
[C] Crossing width W <wavelength λ prevents transmission signals from passing through slit 310S, and a magnetic field necessary for generating electromotive force in non-face-to-face communication module, that is, front-side communication module 311 is difficult to reach.
[D] The non-face-to-face communication module (here, the front-side communication module 311) and the face-to-face communication module (here, the back-side communication module 321) due to the difference L′−L in the antenna communication distance and the presence of the offset amount d between the communication modules. Causes a difference in transmission / reception timing, so that malfunction based on poor response is avoided.
[E] Since the deviation amount LC is provided in the slit 310S, the loop antenna 311A of the non-face-to-face communication module 311 does not generate an electromotive force.

(Third Aspect) Simultaneous individual transmission / reception between the front side communication module 311 and the first reader / writer 1000 and between the back side communication module 321 and the second reader / writer 2000 <FIG. 22>
A second reader / writer 2000 having a planar antenna 2000A that can communicate in the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) as that of the antenna 1000A is opposed to the back side communication module 321. In this case, the reader / writer 1000 is arranged separately.
Even in this case, the magnetic flux coupling described in [A] and [B] below is established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur. Magnetic flux coupling occurs only between the front-side communication module 311 and the first reader / writer 1000 and between the back-side communication module 321 and the second reader / writer 2000, and simultaneous and individual transmission / reception of RFID electromagnetic wave signals by short waves is possible. It becomes possible.

[A] When a short-wave transmission signal (for example, a read command signal) is received by the antenna 311A from the antenna 1000A of the first reader / writer 1000, an electromotive force is generated in the face-to-face communication module, that is, the front-side communication module 311. A response signal (for example, a data signal read from the data storage unit of the front communication module 311) transmitted from the antenna 311A at the transmission / reception timing is received by the antenna 1000A.
[B] When a transmission signal (for example, a read command signal) by a short wave from the antenna 2000A of the second reader / writer 2000 is received by the antenna 321A, an electromotive force is generated in the facing communication module, that is, the back communication module 321, and a predetermined signal is generated. A response signal (for example, a data signal read from the data storage unit of the back side communication module 321) transmitted from the antenna 321A at the transmission / reception timing is received by the antenna 2000A.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surface of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface to the non-facing side main surface or an eddy current generated on the non-facing side main surface due to a transmission signal that goes around the outside of the partition plate 310 is the slit 310S, It is inhibited by the back side coating layer 125Z and the front side coating layer 115Z.
[C] Crossing width W <wavelength λ prevents transmission signals from passing through slit 310S, and a magnetic field necessary for generating an electromotive force in the non-face-to-face communication module is difficult to reach.
[D] The non-face-to-face communication module and the face-to-face communication module have a difference in receiving / transmitting timing due to the difference L′−L in the antenna communication distance and the offset amount d between the communication modules. Operation is avoided.
[E] Since the bias amount LC is provided in the slit 310S, the loop antenna of the non-face-to-face communication module does not generate an electromotive force.

  Therefore, in the third mode shown in FIG. 22, the data reading or writing operation executed by the first reader / writer 1000 on the first data storage unit provided in the IC chip body 311M of the front side communication module 311; Data reading or writing operations executed by the second reader / writer 2000 can be simultaneously processed in parallel with respect to the second data storage unit provided in the IC chip main body 321M of the back side communication module 321.

  As described above, since data access (reading or writing) can be performed simultaneously on the data storage units of the pair of communication modules 311 and 321 using the two reader / writers 1000 and 2000, the data processing can be speeded up. Can do. At this time, the first and second reader / writers 1000 and 2000 are identical in the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) with respect to the front side communication module 311 and the back side communication module 321. While transmitting output signals, the antenna communication distances L and L ′ between the corresponding communication modules 311 and 321 and the reader / writers 1000 and 2000 may be the same.

  As described above, in the second embodiment, a pair of communication modules 311 and 321 having a loop antenna and a partition plate 310 including a linear slit 310S are provided, and window frame shapes are formed on both sides of the partition plate 310. Frame plates 115 and 125 are symmetrically arranged, and the inner peripheral wall surfaces of the respective frame plates 115 and 125 are covered with the covering layers 115Z and 125Z. Propagation and generation of eddy currents on the facing main surface are prevented or suppressed, and for example, an IC card 200 suitable for an electromagnetic wave signal for RFID in a short wave band can be obtained easily and inexpensively. At this time, when the antenna communication distances L and L ′ are set to be equal to or shorter than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ), the directivity is weak and the short wave has a lateral spread. Changes in electric and magnetic fields are directly transmitted as signals between the antennas 1000A and 2000A of the reader / writers 1000 and 2000 and the antennas 311A and 321A of the communication modules 311 and 321. Therefore, it is easy to individually transmit and receive the electromagnetic wave signals for RFID. realizable.

  Further, the slit 310S included in the partition plate 310 is formed so that the transverse width W is smaller than the wavelength λ (W <λ), and the loop antennas 311A and 321A are shifted from the center CA in the long axis direction by the deviation LC. In the case of a short wave with weak directivity and lateral spread, the radio wave reaching the antenna of the non-face-to-face communication module is limited and attenuated when passing through the slit 310S. The Therefore, the antenna of the non-face-to-face communication module does not generate an electromotive force that enables transmission / reception with the reader / writers 1000 and 2000. That is, since only a weak electromotive force is generated, the IC chip body of the non-face-to-face communication module cannot be activated. Even if it is activated, transmission (reply) to the reader / writer 1000 or 2000 cannot be performed.

(Third embodiment)
A third embodiment of the IC card according to the present invention is shown in FIGS. 23 is an exploded perspective view schematically showing the IC card, FIG. 24 is a partially broken plan view, FIG. 25 is a partially broken bottom view, and FIG. 26 is a sectional view taken along line XXVI-XXVI in FIG. In the IC card 300 of the third embodiment, the form of the open area is changed from a single slit to a pair of cutouts, as compared to the IC card 200 of the second embodiment.

  In the short wave IC card 300 shown in FIG. 23, a pair of notches 410N and 410N are formed in the partition plate 410 (partition member), and the pair of notches 410N and 410N includes the front side communication module 311 (first communication member) and A part of the loop-shaped antennas 311A and 321A of the back side communication module 321 (second communication member) is traversed at two locations.

  24 and 26, the pair of notches 410N and 410N are uneven (ie, shifted) from the center in the major axis direction of the respective loop antennas 311A and 321A in the front-side communication module 311 and the back-side communication module 321. It intersects the two long sides of the card outline at each position. Specifically, the width centers CN of the pair of notches 410N and 410N are provided so as to be shifted from the center CA in the major axis direction of the loop antennas 311A and 321A by a deviation amount LC.

The pair of notches 410N and 410N have the same function as the single slit 310S in the IC card 200 of the second embodiment, and exhibit the same function and effect. Further, in the third embodiment, individual transmission / reception modes of the electromagnetic wave signals for RFID between the antenna of the front side communication module and the antenna of the reader / writer, and between the antenna of the back side communication module and the antenna of the reader / writer (FIG. 28 to FIG. 30) is equivalent to the second embodiment described above (FIGS. 20 to 22). Further, the manufacturing process of the frame plate and the assembly process of the frame plate and the partition plate are equivalent to the IC card 300 of the third embodiment and the IC card 200 of the second embodiment. Is shown in FIG. 27 instead of FIG. 19 of the second embodiment. Therefore, detailed description will be omitted by rereading as follows.
・ Partition plates 310, 310L, 310R → Partition plate 410
・ Slit 310S → Notch 410N
-Facing main surface 310Lfs, 310Rfs-> facing main surface 410fs
Non-facing side main surface 310Lns, 310Rns → Non-facing side main surface 410ns

Various developments can be made to the present invention based on the embodiments described above.
For example, as an example of IC card development,
A plurality of sets of the first communication member arranged on one main surface and the second communication member arranged on the other main surface are installed as a set,
Individual transmission / reception can be performed between the first and second communication members and the reader / writer in different frequency bands or frequency ranges for each group.

  As described above, if a plurality of pairs (a plurality of pairs) of communication members are mounted in a single card, the data storage capacity can be further increased. Therefore, one card can be used in a plurality of management systems having different frequency bands and frequency ranges.

Or as another development example of IC card,
At least one of the main surfaces can communicate with the reader / writer in a frequency band or frequency range different from the frequency band or frequency range that can be individually transmitted and received between the first and second communication members and the reader / writer. One or more third communication members are arranged,
The third communication member can communicate with the reader / writer in a single independent frequency band or frequency range.

  Thus, since it is possible to mount the third communication member in a single card, the applicable range of the card is further expanded.

In addition, as an example of deployment to a data parallel processing system using an IC card equipped with a third communication member,
A contactless short-range wireless communication card on which the third communication member is mounted;
It is arranged to face each of the plurality of communication members arranged on the one main surface and the other main surface, and performs individual transmission / reception with the corresponding communication member in the frequency band or frequency range of the corresponding RFID electromagnetic wave signal. With multiple readers / writers to execute,
Data reading or writing operations executed by a corresponding reader / writer on a data storage unit provided in each chip body can be processed in parallel (for example, simultaneously).

  In this way, data access (reading or writing) is performed simultaneously or sequentially on each data storage unit of a pair (or a plurality of pairs) of communication members using a pair (or a plurality of pairs) of reader / writers. On the other hand, since data access is individually performed for the data storage unit of one or more third communication members using another one or more reader / writers, data processing can be speeded up and diversified. Can do. At this time, the first and second reader / writers transmit signals of the same output in the same frequency range (same wavelength range) to the first and second communication members, and corresponding communication members and reader / writers. The communication distance between them may be the same.

  In the present invention including the examples, the “ID-1 size” card standardized and widely used in ISO / IEC7810 has been described as an example. However, the present invention is not limited to past, present, and future countries / regions. Applicable to any card size appearing in Similarly, on the filing date (priority date) of the present application, the description has been made based on the international standard frequency defined in the ISO / IEC standard, the JIS standard, etc., but the present invention is intended to amend the ISO / IEC standard, the JIS standard, etc. Of course, it can also be applied to new, current or revised standards established independently in each country / region.

  In each of the embodiments described above (the first embodiment to the third embodiment), portions having common functions are denoted by the same reference numerals and detailed description thereof is omitted. In addition, these embodiments can be implemented in combination with each other or with the prior art as long as no technical contradiction arises or legal or moral norms are violated.

  As an example of combination with the prior art, a magnetic stripe memory unit 232 is described in the card 100 of the first embodiment (see FIG. 13). The contactless IC cards 100, 200, and 300 of the present invention may be provided with a magnetic contact IC module according to a conventional contact IC card. At that time, the communication module 11, 21, etc. (communication IC module) of the present invention and a conventional magnetic contact type IC module are electrically connected, and either a combination type that is electrically disconnected or an independent hybrid type. There may be.

10 Partition plate (partition member)
10 fs facing main surface 10 ns non-facing main surface 10H microwave through hole (open region)
11 Front-side communication module for microwave (first communication member)
11A Antenna 11B Auxiliary power supply unit 11M IC chip body 11M1 Transmission / reception unit 11M2 Data storage unit 11M3 Power generation unit 11S Wiring board 12 Front insulating sheet (first insulating member)
13 Front-side molded plate (first molded member)
14 Front side protection sheet (first protection member)
15 Front side frame plate (first frame member)
15W Front peripheral wall (first peripheral wall)
15Z Front side coating layer (first electromagnetic shielding layer)
21 Backside communication module for microwaves (second communication member)
21A Antenna 21B Auxiliary power supply unit 21M IC chip body 21M1 Transmission / reception unit 21M2 Data storage unit 21M3 Power generation unit 21S Wiring board 22 Back side insulation sheet (second insulation member)
23 Back side molding plate (second molding member)
24 Back side protection sheet (second protection member)
25 Back frame plate (second frame member)
25W Back side peripheral wall (second peripheral wall)
25Z Back side coating layer (second electromagnetic shielding layer)
100 IC card for microwave (Non-contact short-range wireless communication card)
115 Front side frame plate (first frame member)
115L left front frame plate (first frame member)
115R Right front frame plate (first frame member)
115S Front-side frame plate slit 115W Front-side peripheral wall (first peripheral wall)
115Z Front side coating layer (first electromagnetic shielding layer)
125 Back frame plate (second frame member)
125L Left back frame plate (second frame member)
125R Right back frame plate (second frame member)
125S Slit for back side frame plate 125W Back side peripheral wall (second peripheral wall)
125Z Back side coating layer (second electromagnetic shielding layer)
310 Partition plate (partition member)
310L Left partition plate (partition member)
310Lfs Left facing main surface 310Lns Left non-facing main surface 310R Right partition plate (partition member)
310Rfs Right facing main surface 310Rns Right non-facing main surface 310S Short wave slit (open region)
311 Front-side communication module for shortwave (first communication member)
321 Short-wave backside communication module (second communication member)
200 IC card for shortwave (Non-contact short-range wireless communication card)
410 Partition plate (partition member)
410fs facing main surface 410ns non-facing main surface 410N notch for short wave (open region)
300 IC card for shortwave (Non-contact short-range wireless communication card)
1000, 2000 Reader / writer 1000A, 2000A Antenna 1000B Power supply unit 1000C Data processing unit 1000S Transmission / reception unit d Offset amount between front side communication module and back side communication module (separation distance between both IC chip bodies)
D Maximum diameter of through hole for microwave W Maximum antenna transverse width L of short wave slit or short wave notch L, L 'Antenna communication distance CA Center of long axis direction of loop antenna CN Short width of CS notch CS Short wave slit Center of width LC Short wave slit or short wave notch deviation (deviation)
P1 Rectangular plate P2 Window frame plate P3 Coating film formation plate PL Coating film N Nozzle

Claims (5)

A single card used for contactless short-range wireless communication,
A partition member that has conductivity and has an attenuation or shielding action against electromagnetic waves, and is molded into a sheet or film,
It includes an IC chip body having a data storage function and a communication control function and an antenna having a signal transmission / reception function, and is disposed so as to be opposed to one main surface and the other main surface of the partition member in plan view. The antenna receives an electromagnetic wave signal for RFID in a predetermined frequency range from the reader / writer, and transmits a response signal to the reader / writer, thereby enabling non-contact short-range wireless communication to the reader / writer individually. First and second communication members for performing;
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. And first and second frame members arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member While the inner peripheral wall surface of the peripheral wall portion is covered with a first electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the first peripheral wall portion,
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is covered with a second electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the second peripheral wall portion,
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. When the non-face-to-face communication member that is not positioned on the non-face-to-face main surface is overlapped and seen through from the overlapping direction, the partition member includes an antenna for the face-to-face communication member and an antenna for the face-to-face communication member And an open region is formed through and removed so as to partially overlap each other,
In the state of communication with a reader / writer, the open area causes magnetic flux coupling only between the facing communication member and the reader / writer, thereby enabling individual transmission / reception of RFID electromagnetic wave signals. Card for short-range wireless communication. A single card used for contactless short-range wireless communication,
A partition member made of a non-magnetic material that has conductivity and has an attenuation or shielding action against electromagnetic waves, and is formed into a sheet shape or a film shape;
Including an IC chip body having a data storage function and a communication control function and a planar antenna having a signal transmission / reception function so as to be opposed to one main surface and the other main surface of the partition member in plan view. The non-contact short-range wireless to the reader / writer is arranged, and the planar antenna receives an RFID electromagnetic wave signal in a predetermined frequency range from the reader / writer and transmits a response signal to the reader / writer. First and second communication members for individually communicating;
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. And first and second frame members arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member While the inner peripheral wall surface of the peripheral wall portion is covered with a first electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the first peripheral wall portion,
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is covered with a second electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the second peripheral wall portion,
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. The non-face-to-face communication member that is not located on is superimposed on the non-face-to-face main surface,
The communication distance between the facing communication member and the reader / writer and the communication distance between the non-facing communication member and the reader / writer are both set to be equal to or less than the wavelength of the electromagnetic wave for RFID emitted from the reader / writer,
When viewed through from the overlapping direction, the partition member is formed with an open region that is penetrated and removed in a hole shape so as to partially overlap the antenna of the facing communication member and the antenna of the non-facing communication member, respectively. And
The open area prevents or suppresses generation of a demagnetizing field due to generation of an eddy current on the facing main surface of the partition member by an electromagnetic wave signal for RFID from a reader / writer, and is generated on the facing main surface. The non-facing surface is caused by an eddy current that propagates through the partition member and reaches the non-facing side main surface, or an eddy current that circulates outside the partitioning member and is generated on the non-facing side main surface among RFID electromagnetic wave signals from a reader / writer. By inhibiting the phenomenon of generating a magnetic field on the side main surface, the attenuation or shielding action of the partition member against electromagnetic waves is complemented, and only the facing communication member receives the electromagnetic wave signal for RFID from the reader / writer, and Non-contact short distance characterized by providing a function to send a response signal to the reader / writer and enabling individual transmission and reception of RFID electromagnetic wave signals Wireless communication card. A single card used for contactless short-range wireless communication,
A partition member made of a non-magnetic material that has conductivity and has an attenuation or shielding action against electromagnetic waves, and is formed into a sheet shape or a film shape;
Including an IC chip body having a data storage function and a communication control function and a loop antenna having a signal transmission / reception function, so as to be opposed to one main surface and the other main surface of the partition member in plan view. The non-contact short-distance wireless communication with respect to the reader / writer is performed when the loop antenna receives an electromagnetic wave signal for RFID in a predetermined frequency range from the reader / writer and transmits a response signal to the reader / writer. First and second communication members for individually communicating;
A sheet is provided between the partition member and the first communication member and between the partition member and the second communication member to form a predetermined gap and provide an electrical insulation state. First and second insulating members formed in the shape of a film or a film,
The first and second peripheral walls formed in a window frame shape along each side of the rectangular shape that is made of an electrically insulating material and forms the outer shape of the card are main surfaces on both sides of the partition member. And first and second frame members arranged in contact with each other,
In the first frame member, the first communication member and the first insulating member are accommodated in an internal space of the first peripheral wall portion on the one main surface side, and the first frame member While the inner peripheral wall surface of the peripheral wall portion is covered with a first electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the first peripheral wall portion,
In the second frame member, the second communication member and the second insulating member are accommodated in the internal space of the second peripheral wall portion on the other main surface side, and the second frame member The inner peripheral wall surface of the peripheral wall portion is covered with a second electromagnetic wave shielding layer for blocking or suppressing the electromagnetic wave signal for RFID that goes around the outside of the partition member and reaches the second peripheral wall portion,
A facing communication member located between the reader / writer and the partition member of the first and second communication members is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member. The non-face-to-face communication member that is not located on is superimposed on the non-face-to-face main surface,
The communication distance between the facing communication member and the reader / writer and the communication distance between the non-facing communication member and the reader / writer are both set to be equal to or less than the wavelength of the electromagnetic wave for RFID emitted from the reader / writer,
When seen through from the overlapping direction, the partition member has an opening that is penetrated and removed in a notch shape or a slit shape so as to partially overlap the antenna of the facing communication member and the antenna of the non-facing communication member, respectively. A region is formed,
The open area prevents or suppresses generation of a demagnetizing field due to generation of an eddy current on the facing main surface of the partition member by an electromagnetic wave signal for RFID from a reader / writer, and is generated on the facing main surface. The non-facing surface is caused by an eddy current that propagates through the partition member and reaches the non-facing side main surface, or an eddy current that circulates outside the partitioning member and is generated on the non-facing side main surface among RFID electromagnetic wave signals from a reader / writer. By inhibiting the phenomenon of generating a magnetic field on the side main surface, the attenuation or shielding action of the partition member against electromagnetic waves is complemented, and only the facing communication member receives the electromagnetic wave signal for RFID from the reader / writer, and Non-contact short distance characterized by providing a function to send a response signal to a reader / writer and enabling individual transmission and reception of RFID electromagnetic wave signals Wireless communication card.   4. The non-contact short-range wireless communication according to claim 1, wherein the first and second electromagnetic shielding layers contain a non-magnetic material and are formed of a plating layer or a coating film. card. The contactless near field communication card according to any one of claims 1 to 4,
A first reader / writer that is disposed opposite to the first communication member and capable of only non-contact short-range wireless communication with the first communication member in a predetermined frequency band or frequency range;
The second communication member arranged opposite to the second communication member and capable of only non-contact short-range wireless communication with the second communication member in the same frequency band or frequency range as the first communication member. With a reader / writer,
Data reading or writing operation executed by the first reader / writer with respect to a first data storage unit provided in the IC chip body of the first communication member, and the IC chip body of the second communication member A data parallel processing system characterized in that a data read or write operation executed by the second reader / writer can be processed in parallel with respect to a second data storage unit provided in the system.

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