JP6347437B1 - Non-contact near field communication card and data parallel processing system using the same - Google Patents

Abstract

A non-contact short-range wireless communication card that exhibits a stable magnetic flux shielding effect on a pair of communication members and can reduce the burden of signal output adjustment, and a data parallel processing system using the card are provided. By providing 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, generation of eddy currents on the facing main surface of the partition plate 10 is performed. Further, the propagation and generation of eddy currents on the non-face-to-face main surface can be prevented or suppressed, and for example, an IC card 100 that conforms to 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. 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.

  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 a case where it uses for the partition member arrange | positioned in the non-contact-type short-distance radio | wireless communication card which exhibits the stable magnetic-flux-blocking effect with respect to a pair of communication member, and can reduce the burden of signal output adjustment, It is to provide a data parallel processing system used.

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. And first and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
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 antennas of the communication members forming a pair. 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.

  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, in the present invention, the divergence of the eddy current is propagated on the non-facing main surface of the partition member 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 generation is prevented or suppressed in the same manner as in the facing main surface, and the phenomenon of generating a magnetic field is inhibited.

  Thus, 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. A function that complements the attenuation or shielding action of the partition member against electromagnetic waves, and that only the facing communication member receives the electromagnetic wave signal for RFID from the reader / writer and transmits a response signal to the reader / writer (in other words, , An individual transmission / reception function of the electromagnetic wave signal for RFID).

  In that case, it is desirable that the partition member is 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 a nonmagnetic material, which is considered to be inferior in shielding effect (that is, a magnetic field absorption effect) compared to a ferromagnetic material on a simple comparison, is used for the partition member, the above-described open region is formed in the partition member. As a result, the burden of signal output adjustment and the like is greatly reduced while a stable magnetic flux shielding effect is exerted on the paired communication members.

  Examples of the non-magnetic material include a paramagnetic material (Al, Sn, Pt, Pd, etc.) having a relative permeability larger than 1, and a diamagnetic material (Au, Ag, Cu, Pb, etc.) having a relative permeability smaller than 1. Austenitic stainless steel is also a non-magnetic material. 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 and 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.

  In addition, a peripheral wall portion formed in a frame shape is provided along each rectangular side forming the outer shape of the card, and the partition member, the first and second insulating members, and the first and second insulating members are provided in the internal space of the peripheral wall portion. A communication member may be accommodated.

  As described above, the partition member, the two insulating members, and the two communication members are stacked in layers inside the peripheral wall portion, and a card with a certain thickness can be easily obtained by pressing the peripheral wall portion with a molding member, for example, from above and below. Can be molded. At this time, it is not necessary to apply a pressing force to the communication member, so that the communication member (particularly the antenna) can be prevented from being damaged. In providing the frame-shaped peripheral wall portion, the molded member is made of, for example, an acrylic (methacrylic; PMMA) resin plate, and the peripheral wall portion is integrally formed with one of the upper and lower resin plates, or each of the upper and lower resin plates. It may be molded integrally and is suitable for mass production with unified specifications.

Furthermore, after the peripheral edge of the partition member is bent in the thickness direction to form a peripheral surface portion surrounding the inner surface of the peripheral wall portion, it forms a flange that is bent toward the outer side in the radial direction and seated on the peripheral wall portion,
The peripheral surface portion and the flange portion of the partition member prevent or suppress the RFID electromagnetic wave signal transmitted from the reader / writer from entering the peripheral wall portion and causing magnetic flux coupling with the non-face-to-face communication member.

  In this way, by forming the peripheral surface portion and the flange portion on the partition member, a part of the RFID electromagnetic wave signal transmitted from the reader / writer is prevented or suppressed from going around the outside of the partition member, and the non-partition of the partition member is prevented. It is possible to prevent eddy currents from occurring on the facing main surface.

  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. And first and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
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, by providing a pair of communication members (communication modules) having a planar antenna and a partition member having a hole-shaped open region, the eddy current on the facing main surface of the partition member is the same as described above. And the propagation and generation of eddy currents on the non-facing main surface can be prevented or suppressed, and for example, a card compatible with an electromagnetic wave signal for RFID in the 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 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 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. And first and second insulating members (for example, silicone paper) formed in the shape of a film or a film,
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. An area 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.

  Thus, by providing a pair of communication members (communication modules) having a loop-shaped antenna and a partition member having a notch-shaped or slit-shaped open region, the facing main surface of the partition member is the same as described above. Generation of eddy currents and propagation and generation of eddy currents on the non-face-to-face main surface are prevented or suppressed. 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 hardly 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 either a read-only ROM (read only memory) type (for example, EP-ROM) or a read / write RAM (random access memory) type (for example, S-RAM). May be. 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.

Furthermore, in order to solve the above problems, in the contactless near field communication card of the present invention,
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,
It is possible to perform individual transmission / reception between the first and second communication members and the reader / writer in different frequency bands or frequency ranges for each set.

  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.

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.

In order to solve the above-mentioned problem again, in the contactless near field communication card of the present invention,
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 a 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, in order to solve the above problem in the case of mounting a third communication member, another data parallel processing system according to the present invention,
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,
A data reading or writing operation 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.

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. The partially broken top view which shows the 1st example shape of the through-hole for microwaves. The partially broken top view which shows the 2nd example shape of the through-hole for microwaves. The partially broken top view which shows the 3rd example shape of the through-hole for microwaves. 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. 17 is a plan view showing the IC card of FIG. FIG. 17 is a bottom view showing the IC card of FIG. XIX-XIX sectional view taken on the line of FIG. XX-XX sectional view taken on the line of FIG. The expansion perspective view of a partition plate. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for microwaves by a reader / writer. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for microwaves by a reader / writer. 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 third embodiment of the IC card according to the present invention. FIG. 26 is a plan view showing the IC card of FIG. The bottom view which shows the IC card of FIG. 25 partially broken. XXVIII-XXVIII sectional view taken on the line of FIG. XXIX-XXIX sectional view taken on the line in FIG. The expansion perspective view of a back side molding board. Exploded perspective view schematically showing a fourth embodiment of the IC card according to the present invention. FIG. 32 is a plan view showing the IC card of FIG. FIG. 32 is a bottom view showing the IC card of FIG. 31 in a partially broken view. XXXIV-XXXIV sectional view taken on the line of FIG. The partially broken top view which shows the 1st example shape of the slit for short waves. The partially broken top view which shows the 2nd example shape of the slit for short waves. The partially broken top view which shows the 3rd example shape of the slit for short waves. The partially broken top view which shows the 4th example shape of the slit for short waves. The partially broken top view which shows the 5th example shape of the slit for short waves. The partially broken top view which shows the 6th example shape of the slit for short waves. 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 fifth embodiment of the IC card according to the present invention. FIG. 45 is a plan view showing the IC card of FIG. 44 with a part thereof broken. FIG. 45 is a bottom view showing the IC card of FIG. 44 with a part broken away. FIG. 46 is a sectional view taken along line XLVII-XLVII in FIG. 45. The partially broken top view which shows the 1st example shape of the notch for short waves. The partially broken top view which shows the 2nd example shape of the notch for short waves. The partially broken top view which shows the 3rd example shape of the notch for short waves. The partially broken top view which shows the 4th example shape of the notch for short waves. The partially broken top view which shows the 5th example shape of the notch for short waves. The partially broken top view which shows the 6th example shape of the notch for short waves. The partially broken top view which shows the 7th example shape of the notch for short waves. The partially broken top view which shows the 8th example shape of the notch for short waves. The partially broken top view which shows the 9th example shape of the notch for short waves. 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 sixth embodiment of the IC card according to the present invention. FIG. 61 is a plan view showing the IC card of FIG. 60 with a part broken away. FIG. 61 is a bottom view showing the IC card of FIG. 60 with a part broken away. FIG. 62 is a schematic sectional view taken along line LXIII-LXIII in FIG. 61. The expansion perspective view of a partition plate. Explanatory drawing which shows the separate transmission / reception state with the two front side communication modules for microwaves by two reader-writers. Explanatory drawing which shows the separate transmission-and-reception state with the two back side communication modules for microwaves by two reader / writers. Explanatory drawing which shows the simultaneous parallel transmission / reception state with two front side communication modules and two back side communication modules by four reader / writers. Exploded perspective view schematically showing a seventh embodiment of the IC card according to the present invention. FIG. 69 is a plan view showing the IC card of FIG. 68 with a part broken away. FIG. 69 is a bottom view showing the IC card of FIG. 68 with a part broken away. FIG. 70 is a schematic sectional view taken along line LXXI-LXXI in FIG. 69. The expansion perspective view of a partition plate. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for microwaves and the front side communication module for shortwaves by two reader / writers. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for microwaves and the back side communication module for short waves by two reader / writers. Explanatory drawing which shows the simultaneous parallel transmission / reception state with two front side communication modules and two back side communication modules by four reader / writers. Exploded perspective view schematically showing an eighth embodiment of the IC card according to the present invention. FIG. 77 is a plan view showing the IC card of FIG. FIG. 77 is a bottom view showing the IC card of FIG. 76 with a part broken away. FIG. 77 is a schematic sectional view taken along line LXXIX-LXXIX in FIG. 77. 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 transmission / reception state with the separate communication module by another reader / writer. Explanatory drawing which shows the state which each of a total of three reader / writers transmit / receive simultaneously with the corresponding communication module. Exploded perspective view schematically showing a ninth embodiment of the IC card according to the present invention. FIG. 85 is a plan view showing the IC card of FIG. 84 with a part thereof broken. FIG. 85 is a bottom view showing the IC card of FIG. 84 with a part thereof broken. LXXXVII-LXXXVII line schematic sectional drawing of FIG. Explanatory drawing which shows the separate transmission / reception state with the front side communication module for microwaves by a reader / writer. Explanatory drawing which shows the separate transmission / reception state with the back side communication module for microwaves by a reader / writer. Explanatory drawing which shows the transmission / reception state with one independent communication module by another reader / writer. Furthermore, explanatory drawing which shows the transmission / reception state with the other independent communication module by another reader / writer. Explanatory drawing which shows the state which each of a total of four reader / writers transmit / receive simultaneously with the corresponding communication module.

(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) A horizontally-long rectangular front-side molding plate 13 and back-side molding plate 23 (first and second moldings) which are respectively arranged outside the front-side communication module 11 and the back-side communication module 21 and hold the positions of the modules 11 and 21. Element).

  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 constituent material 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 each of the communication modules 11 and 21, and 0 for each of the insulating sheets 12 and 22. 0.05 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 0.03 to 0.1 mm, respectively. 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 communication modules 11 and 21, and the insulating sheets 12 and 22 in plan view.

  As shown in FIGS. 10 and 12, 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. 9, 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 sign in FIG. 9 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. 10).

  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. 11, when the reader / writer 1000 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 (in the vertical direction 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 sign in FIG. 11 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. 12).

  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. 9 (or the antenna 21A of the facing communication module 21 in FIG. 11) and the antenna 1000A of the reader / writer 1000, and RFID by microwave In order to enable individual transmission / reception of electromagnetic wave signals for use, the IC card 100 further includes a structure as described below.

  In FIG. 9 (or FIG. 11), when the microwave IC card 100 is seen through from the overlapping direction, 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. 9 (or FIG. 11) 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 partition plate 10 (see FIG. 1).

  Returning to FIG. 9 and FIG. 11, by providing the through hole 10H in the partition plate 10, an eddy current is generated on the facing main surface 10 fs of the partition plate 10 due to the electromagnetic wave signal for RFID from the reader / writer 1000. 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. 9 and only the facing communication module 21 in FIG. 11 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. 9 (or FIG. 11), the electromagnetic wave signal for RFID transmitted from the antenna 1000A of the reader / writer 1000 passes through the facing communication module 11 (or 21) and the facing insulating sheet 12 (or 22), and is 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 such a through hole 10H, magnetic flux coupling occurs between the non-facing communication module 21 and the reader / writer 1000 in FIG. 9, and between the non-facing communication module 11 and the reader / writer 1000 in FIG. It becomes difficult. Therefore, the through-hole 10H enables 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. 9, 11, and 15), 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. 9 and 10>
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] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 10 fs to the non-facing side main surface 10 ns or the eddy current generated on the non-facing side main surface 10 ns by the transmission signal that circulates outside the partition plate 10 It is inhibited by the through hole 10H.
[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. 11 and 12>
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] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 10 fs to the non-facing side main surface 10 ns or the eddy current generated on the non-facing side main surface 10 ns by the transmission signal that circulates outside the partition plate 10 It is inhibited by the through hole 10H.
[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. 15>
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 Is inhibited by.
[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. 15, 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, the facing main surface of the partition plate 10 is provided by providing the pair of communication modules 11 and 21 having a planar antenna and the partition plate 10 having the circular through hole 10H. Generation of eddy currents and propagation and generation of eddy currents on the non-face-to-face main surface 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. 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 disposed inside the card outer shape so that moisture (rain water, user's sweat, etc.) outside the IC card 100 can cause the insulating sheets 12 and 22 to be removed. And the peripheral portions of the molded plates 13 and 23 are not prevented from being heat-sealed.

(Modified example of through hole)
The shape of the through hole 10H described above is a circular shape as shown in FIG. 6, and the maximum value D of the hole diameter is represented by a diameter. The shape of the through hole 10H may be an elliptical shape as shown in FIG. 7, and the maximum value D of the hole diameter in this case is represented by the length of the major axis. Further, the shape of the through hole 10H may be a rectangular shape as shown in FIG. 8, and the maximum value D of the hole diameter in this case is represented by the length of the long side.

  FIG. 13 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 the identification number code data in the data storage unit 11M2 (see FIG. 10) 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. 12).

  On the other hand, FIG. 14 shows an example of the back surface image of the IC card 100, and a signature portion 230 and 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. 9 to 12 and 15) 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. 16 is an exploded perspective view schematically showing the IC card, FIG. 17 is a partially broken plan view, FIG. 18 is a partially broken bottom view, and FIGS. 19 and 20 are the XIX-XIX line and XX-XX in FIG. FIG. 21 is an enlarged perspective view of a partition plate. In the IC card 200 of the second embodiment, the shape and arrangement structure of the partition plate and the specification and arrangement position of the back side communication module are mainly changed with respect to the IC card 100 of the first embodiment.

  In the IC card 200 shown in FIG. 16, on the inner surface (upper side in the drawing) of the back side molding plate 23 (second molding member), a peripheral wall portion 123W is erected along each rectangular side forming the card outer shape. Then, a rectangular frame 123 (frame member) is formed by forming a frame so as to surround the four sides. In the internal space of the rectangular frame 123 (the peripheral wall portion 123W), a partition plate 110 (partition member), a front side insulating sheet 12, a back side insulating sheet 22 (first and second insulating members), a front side communication module 11, and a back side communication module. 121 (first and second communication members) is accommodated (see FIGS. 19 and 20). The rectangular frame 123 can be made of, for example, an acrylic (methacrylic; PMMA) resin, like the back side molding plate 23.

  As shown in FIGS. 19 to 21, the peripheral edge of the partition plate 110 is bent in the thickness direction to form the peripheral surface portion 110 </ b> C surrounding the inner surface of the peripheral wall portion 123 </ b> W, and then bent toward the outer side in the radial direction. The heel portion 110F that sits on the base plate is configured and functions as a stepped partition plate. Specifically, a concave space opened toward the front side (upward in the figure) is formed by the bottom plate portion forming the main body portion of the partition plate 110 and the peripheral surface portion 110C, and the front insulating sheet 12 and the front side are formed in the concave space. The communication module 11 is accommodated, and is closed by the front molding plate 13. On the other hand, the back-side insulating sheet 22 and the back-side communication module 121 are accommodated in the inner space of the rectangular frame 123 (the peripheral wall portion 123W) on the back side (downward in the drawing) of the main body portion (bottom plate portion) of the partition plate 110. For example, the height of the peripheral surface portion 110C is set to 0.2 to 0.3 mm, and the height of the rectangular frame 123 is set to 0.5 to 0.8 mm.

  That is, the oblong rectangular front-side communication module 11 and the back-side communication module 121 sandwich the main body portion (bottom plate portion) of the partition plate 110, and the front-side main surface (upper surface in the drawing) and the back-side main surface (lower surface in the drawing) of the partition plate 110. ) And are arranged so as to overlap each other in plan view. In this embodiment, the front-side communication module 11 and the back-side communication module 121 have different specifications, but the operating frequency range is common at 920 MHz ± 50 MHz or 920 MHz ± 5%. Therefore, the antenna 121A and the IC chip of the back-side communication module 121 are used. The shape and the like of the main body 121M are similar to the antenna 11A and the IC chip main body 11M of the front side communication module 11. However, the wiring board 11S of the front-side communication module 11 and the wiring board 121S of the back-side communication module 121 are formed to have different sizes in the lateral direction (that is, the wiring board 121S is short) and have different positions in plan view (that is, They are arranged so as to overlap in the vertical direction (position shifted in the vertical direction) (see FIGS. 17 and 18).

  As shown in FIG. 22, when the reader / writer 1000 that is fixedly arranged communicates with the front-side communication module 11 on the front side (left side in the figure) of the IC card 200 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 110 is the facing main surface 110fs, and the main surface on the back side (right side) is the non-facing main surface 110ns. The front-side communication module 11 positioned between the reader / writer 1000 and the partition plate 110 is superimposed on the facing main surface 110fs of the partition plate 110 as a facing-side communication module, and is positioned between the reader / writer 1000 and the partition plate 110. The non-facing communication module 121 is not overlapped with the non-facing main surface 110ns of the partition plate 110 as a non-facing communication module.

  As shown in FIG. 23, when the reader / writer 1000 that is fixedly arranged communicates with the back side communication module 121 on the back side (right side in the figure) of the IC card 200 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 110 is the facing main surface 110fs, and the main surface on the front side (left side) is the non-facing main surface 110ns. The back side communication module 121 located between the reader / writer 1000 and the partition plate 110 is superimposed on the facing main surface 110fs of the partition plate 110 as a face-to-face communication module, and is positioned between the reader / writer 1000 and the partition plate 110. The front-side communication module 11 not to be stacked is superimposed on the non-face-to-face main surface 110 ns of the partition plate 110 as a non-face-to-face communication module.

  Then, a magnetic flux coupling is generated only between the antenna 11A of the facing communication module 11 in FIG. 22 (or the antenna 121A of the facing communication module 121 in FIG. 23) 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 200 further has a structure as described below.

  When the microwave IC card 200 is seen through from the overlapping direction in FIG. 22 (or FIG. 23), the main body portion (bottom plate portion) of the partition plate 110 has an antenna 11A (or 121) of the facing communication module 11 (or 121). Or 121A) and the antenna 121A (or 11A) of the non-face-to-face communication module 121 (or 11), and the first through-hole 110H1 and the second as an open area, which are removed in a hole shape so as to partially overlap each other. A through hole 110H2 is formed (see FIGS. 17 and 18).

  More specifically, the first through-hole 110H1 and the second through-hole 110H2 shown in FIG. 22 (or FIG. 23) are the facing communication module 11 (or projected on the facing main surface 110fs of the partition plate 110). 121) part of the planar antenna 11A (or 121A) and part of the planar antenna 121A (or 11A) of the non-face-to-face communication module 121 (or 11) projected onto the non-face-to-face main surface 110ns. It is formed as a pair of elliptical holes in a state of containing (that is, including) (see FIGS. 17 and 18). The maximum hole diameters of these through holes 110H1 and 110H2, that is, the length D of the long axis (D ≦ 10 mm in this embodiment) is the wavelength λ of the microwave that is the electromagnetic wave for RFID emitted from the reader / writer 1000 (in this embodiment). is set smaller than (λ≈33 cm) (D <λ).

  As shown in FIGS. 17 and 18, when the IC card 200 is seen through from the overlapping direction, the outer peripheral edge of the partition plate 110 (the flange 110 </ b> F) is retracted and arranged inside the outline of the IC card 200. Further, the outer peripheral edges of the front-side communication module 11 and the back-side communication module 121 are each retracted and arranged inside the outer peripheral edge of the partition plate 110 (the peripheral surface portion 110C) (see FIGS. 19 and 20).

  Similarly, as shown in FIGS. 17 and 18, 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 11 and the back-side communication module 121 corresponding to the respective outer peripheral edges. It is formed larger and is held in a state of closing (or covering) the through holes 110H1 and 110H2 of the partition plate 110 (see FIGS. 19 and 20). In this embodiment, the size (area) of the front side insulating sheet 12 is slightly smaller than the back side insulating sheet 22 (see FIGS. 19 and 20).

  Returning to FIG. 22 and FIG. 23, by providing the through holes 110H1 and 110H2 in the partition plate 110, an eddy current is generated on the facing main surface 110fs of the partition plate 110 by the electromagnetic wave signal for RFID from the reader / writer 1000. This makes it possible to prevent or suppress the phenomenon that generates a demagnetizing field. The through-holes 110H1 and 110H2 are radiated from the eddy current generated on the facing main surface 110fs and propagating through the partition plate 110 to the non-facing main surface 110ns, or the electromagnetic wave signal for RFID by microwave from the reader / writer 1000. The phenomenon of generating a magnetic field on the non-facing side main surface 110 ns can be inhibited by the function of cutting around the outside of the partition plate 110 and dividing the eddy current generated on the non-facing side main surface 110 ns.

  In this way, the through holes 110H1 and 110H2 complement the attenuation or shielding action of the partition plate 110 against electromagnetic waves. In other words, through the through holes 110H1 and 110H2, only the facing communication module 11 in FIG. 22 and only the facing communication module 121 in FIG. 23 receive the RFID electromagnetic wave signal from the reader / writer 1000, and send a response signal thereto. A function of transmitting to the reader / writer 1000 is added. Accordingly, the through holes 110H1 and 110H2 enable individual transmission / reception of RFID electromagnetic wave signals by microwaves as shown in FIGS.

  By the way, when the IC card 200 is seen through from the overlapping direction in FIG. 20, the front-side communication module 11 and the back-side communication module 121 are inside the horizontally long rectangular card outline, and the short side direction (that is, the vertical direction, FIG. 20). In the left-right direction) are offset from each other (齟齬). Specifically, the offset amount d is between the communication modules 11 and 121, in other words, the distance d between the connection points of the antennas 11A and 121A of the communication modules 11 and 121 and the IC chip bodies 11M and 121M, and in other words. A separation distance d is provided in the card short side direction of both IC chip bodies 11M and 121M.

  Therefore, in FIG. 22 (or FIG. 23), 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 121) and the facing insulating sheet 12 (or 22) and separated. Even when trying to pass through the through-holes 110H1 and 110H2 of the plate 110, since the diameter D is smaller than the wavelength λ, the passage itself is hindered, and the magnetic field necessary for generating electromotive force in the non-face-to-face communication module 121 (or 11) reaches. Hard to do. Even if a part of the electromagnetic wave signal for RFID reaches the antenna 121A (or 11A) of the non-face-to-face communication module 121 (or 11) through the through holes 110H1 and 110H2, the antenna communication distance with the reader / writer 1000 is reached. Difference L′−L and the offset amount d described above cause a difference between the non-face-to-face communication module 121 (or 11) and the face-to-face communication module 11 (or 121). Operation is avoided.

  Due to the presence of such through holes 110H1 and 110H2, magnetic flux coupling is provided between the non-facing communication module 121 and the reader / writer 1000 in FIG. 22, and between the non-facing communication module 11 and the reader / writer 1000 in FIG. Is less likely to occur. Accordingly, the through holes 110H1 and 110H2 enable individual transmission / reception of RFID electromagnetic wave signals by microwaves as shown in FIGS. Further, in FIG. 22 (or FIG. 23), the peripheral surface portion 110C and the flange portion 110F of the partition plate 110 are connected to the non-face-to-face side by the RFID electromagnetic wave signal generated by the microwave transmitted from the reader / writer 1000 around the peripheral wall portion 123W. Preventing or suppressing magnetic flux coupling with the module 121 (or 11).

  Here, the second embodiment of 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 is organized as follows. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 22 to 24), a solid line indicates that magnetic flux coupling is established, and a broken line indicates that magnetic flux coupling is not established.

(First Aspect) Individual Transmission / Reception Between Front-side Communication Module 11 and Reader / Writer 1000 <FIG. 22>
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 communication module 11, and the data processing unit 1000C (see FIG. 10). A response signal (for example, a data signal read from the data storage unit 11M2 (see FIG. 10) of the front-side communication module 11) transmitted from the antenna 11A at the transmission / reception timing controlled by is received by the antenna 1000A.

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surface 110fs of the partition plate 110 is blocked or suppressed by the through holes 110H1 and 110H2.
[B] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 110 fs to the non-facing side main surface 110 ns or the eddy current generated on the non-facing side main surface 110 ns by a transmission signal that circulates outside the partition plate 110 It is inhibited by the through holes 110H1 and 110H2.
[C] The diameter D <wavelength λ inhibits transmission signals from passing through the through-holes 110H1 and 110H2, 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 121 is difficult to reach.
[D] The non-face-to-face communication module (here, the back-side communication module 121) 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 121 and Reader / Writer 1000 <FIG. 23>
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 121 and the reader / writer 1000, and an electromagnetic wave signal for RFID can be individually transmitted and received by microwaves.
[B] When a microwave transmission signal (for example, a read command signal) is received by the antenna 121A from the antenna 1000A of the reader / writer 1000, an electromotive force is generated in the back side communication module 121, and the data processing unit 1000C (see FIG. 12). A response signal transmitted from the antenna 121A at the transmission / reception timing controlled by (for example, a data signal read from the data storage unit of the back side communication module 121) is received by the antenna 1000A.

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surface 110fs of the partition plate 110 is blocked or suppressed by the through holes 110H1 and 110H2.
[B] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 110 fs to the non-facing side main surface 110 ns or the eddy current generated on the non-facing side main surface 110 ns by a transmission signal that circulates outside the partition plate 110 It is inhibited by the through holes 110H1 and 110H2.
[C] The diameter D <wavelength λ inhibits transmission signals from passing through the through-holes 110H1 and 110H2, and a magnetic field necessary for generating an 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 121) 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 the transmission / reception timing, so that malfunction due to 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 121 and the second reader / writer 2000 <FIG. 24>
A second reader / writer 2000 having a planar antenna 2000A facing the back-side communication module 121 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 is generated only between the front-side communication module 11 and the first reader / writer 1000 and between the back-side communication module 121 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 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 a microwave from the antenna 2000A of the second reader / writer 2000 is received by the antenna 121A, an electromotive force is generated in the facing communication module, that is, the back communication module 121, and a predetermined value is generated. A response signal (for example, a data signal read from the data storage unit of the back side communication module 121) transmitted from the antenna 121A at the transmission / reception timing is received by the antenna 2000A.

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to a transmission signal reaching the facing main surface of the partition plate 110 is blocked or suppressed by the through holes 110H1 and 110H2.
[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 circulates outside the partition plate 110 is a through hole 110H1 , 110H2.
[C] The diameter D <wavelength λ inhibits transmission signals from passing through the through holes 110H1 and 110H2, 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.

  Therefore, in the third mode shown in FIG. 24, 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 11M of the front side communication module 11; Data read or write 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 121M of the back side communication module 121.

  As described above, since data access (reading or writing) can be simultaneously performed on the data storage units of the pair of communication modules 11 and 121 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 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 121. In addition, the antenna communication distances L and L ′ between the corresponding communication modules 11 and 121 and the reader / writers 1000 and 2000 may be the same.

  As described above, in the second embodiment, by providing the pair of communication modules 11 and 121 having the planar antenna and the partition plate 110 having the pair of elliptical through holes 110H1 and 110H2, the partition plate 110 is provided. Generation of eddy currents on the facing main surface and propagation and generation of eddy currents on the non-facing side main surface are prevented or suppressed, and for example, an IC card 200 suitable for an electromagnetic wave signal for RFID in a microwave band can be obtained easily and inexpensively. Can do. 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 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 121A of the communication modules 11 and 121. Therefore, it is easy to individually transmit and receive the electromagnetic wave signals for RFID. realizable. In addition, since the pair of through-holes 110H1 and 110H2 and the pair of communication modules 11 and 121 are provided in a one-to-one correspondence, positioning during manufacture is facilitated and dimensional accuracy is improved.

  In addition, the peripheral surface portion 110C and the flange portion 110F are formed on the partition plate 110, and the flange portion 110F is seated on the rectangular frame 123 (the peripheral wall portion 123W), so that one of the electromagnetic wave signals for RFID transmitted from the reader / writers 1000 and 2000 is obtained. It is possible to prevent or suppress the portion from wrapping around the outside of the partition plate 110, thereby preventing an eddy current from being generated on the non-facing main surface of the partition plate 110.

  Further, since the partition plate 110, the two insulating sheets 12, 22, and the two communication modules 11, 121 are accommodated in a layered manner in the internal space of the rectangular frame 123 (the peripheral wall portion 123W), the molded plates 13, 23 from the front side and the back side. By applying a pressing force to the IC card 200, it is possible to easily obtain the IC card 200 having a certain thickness without damaging the antennas 11A and 121A of the communication modules 11 and 121.

(Third embodiment)
A third embodiment of the IC card according to the present invention is shown in FIGS. 25 is an exploded perspective view schematically showing the IC card, FIG. 26 is a partially broken plan view, FIG. 27 is a partially broken bottom view, and FIGS. 28 and 29 are the XXVIII-XXVIII line and XXIX-XXIX in FIG. FIG. 30 is an enlarged perspective view of the back-side molded plate. In the IC card 300 of the third embodiment, the form is changed so that the back side molding plate is integrated with the rectangular frame in the IC card 200 of the second embodiment.

  In the microwave IC card 300 shown in FIG. 25, the back side molding plate 223 (second molding member) is erected along each side of the rectangular shape forming the outer shape of the card and is a flange portion of the stepped partition plate 110. A peripheral wall portion 223W that holds 110F is integrally formed with the main body portion (bottom plate portion) by injection molding, cast molding, or the like using, for example, acrylic (methacrylic; PMMA) resin (see FIG. 30). As a result, the IC card 300 has high dimensional accuracy and can maintain a low frequency of occurrence of poor response and malfunction, so that it is suitable for mass production while improving quality.

  In the third embodiment, 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 is described above. Since this is the same as the second embodiment (FIGS. 22 to 24), description thereof will be omitted.

(Fourth embodiment)
A fourth embodiment of the IC card according to the present invention is shown in FIGS. 31 is an exploded perspective view schematically showing the IC card, FIG. 32 is a partially broken plan view, FIG. 33 is a partially broken bottom view, and FIG. 34 is a sectional view taken along line XXXIV-XXXIV in FIG. In the IC card 400 of the fourth 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 400 shown in FIG. 31 to FIG. 34 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 lamination. 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-side main surface (upper surface in FIG. 31) and the back-side main surface (lower surface in FIG. 31) 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 oblong rectangular front-side molding plate 13 and the back-side molding plate 23 (first and second moldings) that are respectively arranged outside the front-side communication module 311 and the back-side communication module 321 and hold the positions of the modules 311 and 321. Element).

  The front protective sheet 14 and the back protective sheet 24 (first and second protective members) are as described in the first embodiment. The thickness of each component of the IC card 400 is substantially the same as that described in the first embodiment.

  The partition plate 310 is located substantially at the center in the thickness direction of the IC card 400, has conductivity and attenuates or shields against electromagnetic waves (or can be rephrased as a reflecting 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 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. 32). 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. 33).

  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 in an overlapping manner in the back-to-back state at substantially the same position (see FIGS. 32 and 33). 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 surface of the corresponding front side molding plate 13 and back side molding plate 23 with an adhesive or the like (see FIG. 31).

  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 with the partition plate 310, the communication modules 311 and 321, and the insulating sheets 12 and 22 in plan view.

  As shown in FIG. 41, 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 400 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. 41 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.

  42, 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 400 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. Note that the slide movement direction of the IC card 400 indicated by the arrow sign in FIG. 11 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, magnetic flux coupling is generated only between the antenna 311A of the facing communication module 311 in FIG. 41 (or the antenna 321A of the facing communication module 321 in FIG. 42) and the antenna 1000A of the reader / writer 1000, and for RFID by shortwave In order to enable individual transmission / reception of electromagnetic wave signals, the IC card 400 further has a structure as described below.

  In FIG. 41 (or FIG. 42), when the short-wave IC card 400 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 is formed as an open area that is removed so as to partially overlap the antenna 321A (or 311A) of the side communication module 321 (or 311) (see FIGS. 32 and 33).

  Specifically, the slit 310S shown in FIG. 41 (or FIG. 42) 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. 32 and 33). 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. 32 and 33, when the IC card 400 is seen through from the overlapping direction, the outer peripheral edges of the partition plates 310L and 310R (310) are retracted to the inner side from the outline of the IC card 400. 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. 34).

  Similarly, as shown in FIGS. 32 and 33, when the IC card 400 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 larger and is held in a state of closing (or covering) the slit 310S of the partition plates 310L and 310R (310) (see FIG. 34). In this embodiment, both the front-side insulating sheet 12 and the back-side insulating sheet 22 have the same shape and size as those obtained by combining the partition plates 310L and 310R and the slit 310S (see FIG. 31).

  41 and 42, by providing the partition plate 310 with the slit 310S, an eddy current is generated on the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R by the electromagnetic wave signal for RFID due to 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 on 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, or 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. 41 and only the facing communication module 321 in FIG. 42 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 / reception of RFID electromagnetic wave signals by short waves as shown in FIGS.

  By the way, when the IC card 400 is seen through from the overlapping direction in FIG. 34, the front side communication module 311 and the back side communication module 321 are inside the laterally long rectangular card outline, and the long side direction thereof (that is, the horizontal direction, FIG. 34). 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.

  Therefore, in FIG. 41 (or FIG. 42), the RFID electromagnetic wave signal 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. 32 and 34, the slit 310S is an uneven position that is deviated (that is, deviated) from the center in the major axis direction of each of the loop antennas 311A and 321A 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.

  Therefore, in FIG. 41 (or FIG. 42), 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 such a slit 310S, magnetic flux coupling hardly occurs between the non-facing communication module 321 and the reader / writer 1000 in FIG. 41 and between the non-facing communication module 311 and the reader / writer 1000 in FIG. Become. Therefore, the slit 310S enables individual transmission / 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. 41 to 43), 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 311 and Reader / Writer 1000 <FIG. 41>
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 this is inhibited by the slit 310S.
[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 Mode) Individual Transmission / Reception Between Backside Communication Module 321 and Reader / Writer 1000 <FIG. 42>
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 this is inhibited by the slit 310S.
[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. 43>
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] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface to the non-facing side main surface or the eddy current generated on the non-facing side main surface by the transmission signal that goes around the outside of the partition plate 310 is caused by the slit 310S. Be inhibited.
[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. 43, 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 fourth embodiment, by providing the pair of communication modules 311 and 321 having a loop antenna and the partition plate 310 including the linear slit 310S, on the facing main surface of the partition plate 310, Generation of eddy currents and propagation and generation of eddy currents on the non-facing main surface are prevented or suppressed, and for example, an IC card 400 compatible with 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.

(Slit variants)
The shape of the slit 310S described above is a groove that is linear in the vertical direction (vertical direction in the figure) and has a constant width as shown in FIG. 35, and the maximum transverse width W of the antenna is represented by the slit width. The width of the slit 310S may be gradually increased as shown in FIG. 36, or may be changed in the middle as shown in FIG. Moreover, the shape of the slit 310S may be bent in a lightning bolt shape as shown in FIG. 38, or may be bent in a zigzag manner as shown in FIG. Furthermore, it may be slightly inclined (for example, within ± 15 ° with respect to the vertical direction) like the slit 310S of FIG.

(Fifth embodiment)
A fifth embodiment of the IC card according to the present invention is shown in FIGS. 44 is an exploded perspective view schematically showing the IC card, FIG. 45 is a partially broken plan view, FIG. 46 is a partially broken bottom view, and FIG. 47 is a sectional view taken along line XLVII-XLVII in FIG. In the IC card 500 of the fifth embodiment, the form of the open area is changed from a single slit to a pair of notches, as compared to the IC card 400 of the fourth embodiment.

  44, 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 the pair of notches 410N and 410N. 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.

  45 and 46, the pair of notches 410N and 410N are uneven (ie, shifted) from the center in the major axis direction of the loop antennas 311A and 321A of 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 400 of the fourth embodiment, and exhibit the same function and effect. Further, in the fifth embodiment, individual transmission / reception modes of RFID electromagnetic wave signals 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. 57 to FIG. 59) is equivalent to the fourth embodiment described above (FIGS. 41 to 43). 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

(Variation of notch)
The pair of notches 410N and 410N described above are rectangular grooves having a constant width aligned in the vertical direction (vertical direction in the figure) as shown in FIG. 48, and the maximum transverse width W of the antenna is the notch width. Represented. The tip shape of the notch 410N can be changed to a hemispherical shape as shown in FIG. 49, a triangular shape as shown in FIG. 50, a trapezoidal shape as shown in FIG. It may be a drum-shaped notch 410N whose notch width changes linearly as shown in FIG. 52 or changes like a curve as shown in FIG. The width may be gradually changed at the pair of notches 410N and 410N as shown in FIG. 54, or the width may be changed symmetrically at the pair of notches 410N and 410N as shown in FIG. The pair of notches 410N and 410N may be rectangular grooves having a constant width that are slightly inclined (for example, within ± 15 ° with respect to the vertical direction) and aligned in a straight line as shown in FIG. As shown in these modified examples, it is desirable that the pair of notches 410N and 410N be arranged in a straight line.

(Sixth embodiment)
A sixth embodiment of the IC card according to the present invention is shown in FIGS. 60 is an exploded perspective view schematically showing the IC card, FIG. 61 is a partially broken plan view, FIG. 62 is a partially broken bottom view, FIG. 63 is a sectional view taken along line LXIII-LXIII in FIG. FIG. 3 is an enlarged perspective view of a partition plate. In the IC card 600 of the sixth embodiment, the number and arrangement of communication modules are changed with respect to the IC card 300 of the third embodiment, and the form of the stepped partition plate is also partially changed.

The IC card 600 shown in FIGS. 60 to 63 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 lamination. 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 510 (partition member) formed in a horizontally long rectangular shape in the form of one sheet or film;
(2) The front and rear main surfaces (upper surface of the main body portion (bottom plate portion) in FIG. 60) and the rear main surface (also the lower surface) of the partition plate 510 are vertically arranged so as to overlap each other in plan view and A first microwave front-side communication module 111 and a back-side communication module 121 (first and second communication members in the first set), each having a shape;
(3) The front-side communication module 511 and the back-side communication for the second microwave, which are arranged in the vertical direction so as to be opposed to the front-side main surface and the back-side main surface of the partition plate 510 in a plan view and have a vertically long rectangular shape. Module 521 (first and second communication members in the second set);
(4) An electrically insulating space that is disposed between the partition plate 510 and the front-side communication modules 111 and 511 and between the partition plate 510 and the back-side communication modules 121 and 521 and that corresponds to the thickness of itself. A horizontally-long rectangular front-side insulating sheet 12 and back-side insulating sheet 22 (first and second insulating members) that form (gap);
(5) The oblong rectangular front-side molding plate 13 and the back-side molding plate 223 that are respectively arranged outside the front-side communication modules 111 and 511 and the back-side communication modules 121 and 521 and hold the positions of the modules 111, 511, 121, and 521. (First and second molded members).

  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 constituent material of the IC card 600 follows the description of the first embodiment and the second embodiment.

  The two pairs (two sets) of communication modules 111, 121; 511, 521 have a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 600, and the first pair of antennas 111A, 121A are folded (in an S shape). The second pair of antennas 511A and 521A is a planar antenna that extends in a wing shape in the longitudinal direction, that is, the short side direction of the IC card 600, by extending in a straight line and then turning back. IC chip main bodies 111M, 121M; 511M, 521M are arranged at substantially the center in the vertical direction of the antennas 111A, 121A; 511A, 521A (or the IC card 600).

  As shown in FIGS. 63 and 64, the peripheral edge of the partition plate 510 is bent in the thickness direction to form a peripheral surface portion 510C surrounding the inner surface of the peripheral wall portion 223W of the back-side molded plate 223, and then bent outward in the radial direction. Then, the flange portion 510F seated on the peripheral wall portion 223W is configured and functions as a stepped partition plate. Specifically, a concave space opened toward the front side (upward in the figure) is formed by the bottom plate portion forming the main body portion of the partition plate 510 and the peripheral surface portion 510C, and the front insulating sheet 12 and the front side are formed in the concave space. The communication modules 111 and 511 are accommodated and are closed by the front side molded plate 13. On the other hand, the back side insulating sheet 22 and the back side communication modules 121 and 521 are accommodated in the inner space of the back side molding plate 223 (the peripheral wall portion 223W) on the back side (lower side in the figure) of the main body portion (bottom plate portion) of the partition plate 510. The

  That is, the oblong rectangular front-side communication modules 111 and 511 and the back-side communication modules 121 and 521 sandwich the main body portion (bottom plate portion) of the partition plate 510, and the front-side main surface (upper surface in the figure) and back-side main surface of the partition plate 510. Opposing (lower surface in the figure) and corresponding in plan view are arranged so as to overlap each other.

  In this embodiment, both the front-side communication module 111 and the back-side communication module 121 are for the first microwave and have the same specifications, and the wiring board 111S and the wiring board 121S have the same outer shape at the same position in plan view. A pair (one set) of communication modules is configured to overlap each other in a back-to-back state (see FIGS. 61 and 62). The first microwave M1 is set, for example, in a frequency range of 920 MHz ± 50 MHz (or 920 MHz ± 5%), and the antennas 111A and 121A of the pair of communication modules 111 and 121 and the antenna 1000A (M1) of the reader / writer 1000 (M1). (See FIGS. 65 and 66).

  On the other hand, both the front-side communication module 511 and the back-side communication module 521 are for the second microwave and have the same specifications, and the wiring board 511S and the wiring board 521S are back-to-back at the same position in plan view. A pair of (one set) of communication modules is arranged (see FIGS. 61 and 62). The second microwave M2 is set to a frequency range of 2.45 GHz ± 130 MHz (or 2.45 GHz ± 5%), for example, and the antennas 511A and 521A of the pair of communication modules 511 and 521 and the antenna of the reader / writer 2000 (M2). Transmission / reception to / from 2000A (M2) is possible (see FIGS. 65 and 66).

  In the sixth and subsequent embodiments, (M1) at the end of the code represents the first microwave M1, and (M2) represents the second microwave M2.

  As shown in FIG. 65, the reader / writer 1000 (M1) fixedly arranged communicates with the front-side communication module 111 on the front side (left side in the figure) of the IC card 600 that slides along the main surface (up and down in the figure). When doing so, the main surface on the front side (left side) of the partition plate 510 is the facing main surface 510fs, and the main surface on the back side (right side) is the non-facing main surface 510ns. The front-side communication module 111 positioned between the reader / writer 1000 (M1) and the partition plate 510 is overlapped on the facing main surface 510fs of the partition plate 510 as a facing-side communication module, and the reader / writer 1000 (M1) and the partition plate are overlapped. The back-side communication module 121 that is not positioned between the front and rear sides 510 is superimposed on the non-face-to-face main surface 510 ns of the partition plate 510 as a non-face-to-face communication module.

  Similarly, when the reader / writer 2000 (M2) fixedly arranged communicates with the front-side communication module 511 on the front side of the IC card 600 that slides along the main surface, the main surface on the front side (left side) of the partition plate 510 faces. It becomes the side main surface 510fs, and the main surface on the back side (right side) becomes the non-facing side main surface 510ns. A front-side communication module 511 positioned between the reader / writer 2000 (M2) and the partition plate 510 is superimposed on the facing main surface 510fs of the partition plate 510 as a facing-side communication module, and the reader / writer 2000 (M2) and the partition plate are overlapped. A back-side communication module 521 that is not positioned between the front and rear sides 510 is overlapped on the non-face-to-face main surface 510 ns of the partition plate 510 as a non-face-to-face communication module.

  As shown in FIG. 66, the reader / writer 1000 (M1) fixedly arranged communicates with the back side communication module 121 on the back side (right side in the figure) of the IC card 600 that slides along the main surface (in the vertical direction in the figure). When doing so, the main surface on the back side (right side) of the partition plate 510 is the facing main surface 510fs, and the main surface on the front side (left side) is the non-facing main surface 510ns. The back-side communication module 121 located between the reader / writer 1000 (M1) and the partition plate 510 is superimposed on the facing main surface 510fs of the partition plate 510 as a facing-side communication module, and the reader / writer 1000 (M1) and the partition plate are overlapped. The front-side communication module 111 that is not located between the front-side communication module 510 and the front-side communication module 111 overlaps the non-facing-side main surface 510 ns of the partition plate 510 as a non-facing communication module.

  Similarly, when the reader / writer 2000 (M2) fixedly arranged communicates with the back side communication module 521 on the back side of the IC card 600 that slides along the main surface, the back side main surface of the partition plate 510 is the facing side main surface. 510fs, and the main surface on the front side becomes the non-facing side main surface 510ns. The back side communication module 521 positioned between the reader / writer 2000 (M2) and the partition plate 510 is superimposed on the facing main surface 510fs of the partition plate 510 as a facing side communication module, and the reader / writer 2000 (M2) and the partition plate are overlapped. A front-side communication module 511 that is not positioned between the front-side communication module 510 and the front-side communication module 511 is superimposed on the non-facing side main surface 510 ns of the partition plate 510 as a non-facing communication module.

  65. Magnetic flux coupling is generated only between the antenna 111A of the facing communication module 111 in FIG. 65 (or the antenna 121A of the facing communication module 121 in FIG. 66) and the antenna 1000A (M1) of the reader / writer 1000 (M1). In order to enable individual transmission / reception of the electromagnetic wave signal for RFID by the first microwave M1, the IC card 600 further includes a structure as described below.

  In FIG. 65 (or FIG. 66), when the IC card 600 is seen through from the overlapping direction, the main body portion (bottom plate portion) of the partition plate 510 has the antenna 111A (or 121A) of the facing communication module 111 (or 121) and A through hole 510H1 serving as an open region is formed by removing the hole shape so as to partially overlap the antenna 121A (or 111A) of the non-face-to-face communication module 121 (or 111) (FIG. 61, FIG. 61). (See FIG. 62).

  More specifically, the through-hole 510H1 shown in FIG. 65 (or FIG. 66) is a planar antenna 111A (or a planar antenna 111A) of the facing communication module 111 (or 121) projected onto the facing main surface 510fs of the partition plate 510. Or a part of the planar antenna 121A (or 111A) of the non-face-to-face communication module 121 (or 111) projected onto the non-face-to-face main surface 510ns. One circular hole is formed (see FIGS. 61 and 62). The maximum hole diameter, that is, the diameter D1 (D1 ≦ 10 mm in this embodiment) of the through hole 510H1 is the wavelength λ1 of the first microwave M1 that is an electromagnetic wave for RFID emitted from the reader / writer 1000 (M1) (in this embodiment). is set smaller than (λ1≈33 cm) (D1 <λ1).

  In addition, magnetic flux coupling occurs only between the antenna 511A of the facing communication module 511 in FIG. 65 (or the antenna 521A of the facing communication module 521 in FIG. 66) and the antenna 2000A (M2) of the reader / writer 2000 (M2). In order to enable individual transmission / reception of the electromagnetic wave signal for RFID by the second microwave M2, the IC card 600 further includes a structure as described below.

  When the IC card 600 is seen through from the overlapping direction in FIG. 65 (or FIG. 66), the main body portion (bottom plate portion) of the partition plate 510 has the antenna 511A (or 521A) of the facing communication module 511 (or 521) and A through hole 510H2 serving as an open region is formed by removing the hole shape so as to partially overlap the antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) (FIG. 61, FIG. 61). (See FIG. 62).

  More specifically, the through hole 510H2 shown in FIG. 65 (or FIG. 66) is a planar antenna 511A (or 521A) of the facing communication module 511 (or 521) projected on the facing main surface 510fs of the partition plate 510. Or a part of the planar antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) projected onto the non-face-side main surface 510ns. One circular hole is formed (see FIGS. 61 and 62). The maximum hole diameter, that is, the diameter D2 (D2 ≦ 6 mm in this embodiment) of the through hole 510H2 is the wavelength λ2 of the second microwave M2 that is an electromagnetic wave for RFID emitted from the reader / writer 2000 (M2) (in this embodiment). is set smaller than (λ2≈12 cm) (D2 <λ2).

  As shown in FIGS. 61 and 62, when the IC card 600 is seen through from the overlapping direction, the outer peripheral edge of the partition plate 510 is retracted and arranged inside the outline of the IC card 600. Further, the outer peripheral edges of the front-side communication modules 111 and 511 and the back-side communication modules 121 and 521 are respectively retracted from the outer peripheral edge of the partition plate 510 (see FIG. 63).

  Similarly, as shown in FIGS. 61 and 62, when the IC card 600 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 modules 111 and 511 and the back-side communication corresponding to the respective outer peripheral edges. It is formed larger than the modules 121 and 521 and is held in a state of closing (or covering) the through holes 510H1 and 510H2 of the partition plate 510 (see FIG. 63). In this example, the size (area) of the front side insulating sheet 12 is slightly smaller than the back side insulating sheet 22 (see FIG. 63).

  65 and 66, by providing the partition plate 510 with the through-hole 510H1, a vortex is generated on the facing main surface 510fs of the partition plate 510 by the RFID electromagnetic wave signal by the first microwave M1 from the reader / writer 1000 (M1). It is possible to prevent or suppress a phenomenon in which a current is generated to generate a demagnetizing field. The through-hole 510H1 is for RFID generated by the eddy current generated on the facing main surface 510fs and propagating through the partition plate 510 to the non-facing main surface 510ns, or by the first microwave M1 from the reader / writer 1000 (M1). The phenomenon of generating a magnetic field on the non-facing side main surface 510 ns can be inhibited by the function of separating the eddy current generated on the non-facing side main surface 510 ns from the outside of the partition plate 510 in the electromagnetic wave signal.

  Further, in FIG. 65 and FIG. 66, by providing a through hole 510H2 in the partition plate 510, a vortex is generated in the facing main surface 510fs of the partition plate 510 by the electromagnetic wave signal for RFID by the second microwave M2 from the reader / writer 2000 (M2). It is possible to prevent or suppress a phenomenon in which a current is generated to generate a demagnetizing field. Further, the through hole 510H2 is generated for the RFID by the eddy current generated on the facing main surface 510fs and propagating through the partition plate 510 to the non-facing main surface 510ns, or by the second microwave M2 from the reader / writer 2000 (M2). The phenomenon of generating a magnetic field on the non-facing side main surface 510 ns can be inhibited by the function of separating the eddy current generated on the non-facing side main surface 510 ns from the outside of the partition plate 510 in the electromagnetic wave signal.

  In this way, the through holes 510H1 and 510H2 complement the attenuation or shielding action of the partition plate 510 against electromagnetic waves. That is, due to the through holes 510H1 and 510H2, only the facing communication modules 111 and 511 in FIG. 65 and only the facing communication modules 121 and 521 in FIG. 66 are for RFID from the reader / writer 1000 (M1) and 2000 (M2). A function of receiving an electromagnetic wave signal and transmitting a response signal to the reader / writer 1000 (M1), 2000 (M2) is provided. Accordingly, the through holes 510H1 and 510H2 enable individual transmission and reception of the electromagnetic wave signals for RFID by the first and second microwaves M1 and M2 shown in FIGS.

  63, when the IC card 600 is seen through from the superposition direction, the front-side communication module 111 and the back-side communication module 121 are inside the horizontally long rectangular card outline, and the long side direction (that is, the horizontal direction, FIG. 63). In the left-right direction) are offset from each other (齟齬). Specifically, the offset amount d (M1) is set between the two communication modules 111 and 121, in other words, the distance d (the distance between the connection points between the antennas 111A and 121A of the two communication modules 111 and 121 and the IC chip bodies 111M and 121M. M1), in other words, a separation distance d (M1) is provided in the card long side direction of both IC chip bodies 111M and 121M.

  Similarly, when the IC card 600 is seen through from the overlapping direction in FIG. 63, the front side communication module 511 and the back side communication module 521 are inside the horizontally long rectangular card outline, and the long side direction thereof (that is, the horizontal direction, in FIG. 63). They are arranged offset (方向) from each other in the left-right direction. Specifically, the offset amount d (M2) between the two communication modules 511 and 521, in other words, the distance d (the distance between the connection points of the antennas 511A and 521A of the two communication modules 511 and 521 and the IC chip bodies 511M and 521M). M2), in other words, a separation distance d (M2) is provided in the card long side direction of both IC chip bodies 511M and 521M.

  Accordingly, in FIG. 65 (or FIG. 66), the electromagnetic wave signal for RFID by the first microwave M1 transmitted from the antenna 1000A (M1) of the reader / writer 1000 (M1) is converted into the facing communication module 111 (or 121) and the facing side. Even if it passes through the insulating sheet 12 (or 22) and tries to pass through the through hole 510H1 of the partition plate 510, the diameter D1 is smaller than the wavelength λ1, so that the passage itself is hindered, and the non-face-to-face communication module 121 (or 111) The magnetic field required for generating the electromotive force is difficult to reach. Even if a part of the electromagnetic wave signal for RFID reaches the antenna 121A (or 111A) of the non-face-to-face communication module 121 (or 111) through the through hole 510H1, the antenna communication with the reader / writer 1000 (M1). The non-face-to-face communication module 121 (or 111) and the face-to-face communication module 111 (or 121) are at the transmission / reception timing according to the distance difference L ′ (M1) −L (M1) and the offset amount d (M1). As a result, a malfunction due to poor response is avoided.

  Due to the presence of the through hole 510H1, the non-face-to-face communication module 121 and the reader / writer 1000 (M1) in FIG. 65, and the non-face-to-face communication module 111 and the reader / writer 1000 (M1) in FIG. Magnetic flux coupling is less likely to occur between them. Therefore, the through hole 510H1 enables individual transmission / reception of the electromagnetic wave signal for RFID by the first microwave M1 shown in FIGS. In FIG. 65 (or FIG. 66), the peripheral surface portion 510C and the flange portion 510F of the partition plate 510 are arranged such that the RFID electromagnetic wave signal from the first microwave M1 transmitted from the reader / writer 1000 (M1) passes around the peripheral wall portion 223W. To prevent or suppress magnetic flux coupling with the non-face-to-face communication module 121 (or 111).

  Similarly, in FIG. 65 (or FIG. 66), the electromagnetic wave signal for RFID by the second microwave M2 transmitted from the antenna 2000A (M2) of the reader / writer 2000 (M2) is converted into the facing communication module 511 (or 521) and the facing. Even if it tries to pass through the side insulating sheet 12 (or 22) and pass through the through hole 510H2 of the partition plate 510, since the diameter D2 is smaller than the wavelength λ2, the passage itself is hindered, and the non-face-to-face communication module 521 (or 511). It is difficult to reach the magnetic field necessary for generating electromotive force at Even if a part of the electromagnetic wave signal for RFID reaches the antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) through the through hole 510H2, the antenna communication with the reader / writer 2000 (M2) is performed. The non-face-to-face communication module 521 (or 511) and the face-to-face communication module 511 (or 521) are set to receive / send timing by the distance difference L ′ (M2) −L (M2) and the offset amount d (M2). As a result, a malfunction due to poor response is avoided.

  Due to the presence of the through hole 510H2, the non-face-to-face communication module 521 and the reader / writer 2000 (M2) in FIG. 65, and the non-face-to-face communication module 511 and the reader / writer 2000 (M2) in FIG. Magnetic flux coupling is less likely to occur between them. Therefore, the through-hole 510H2 enables individual transmission / reception of the electromagnetic wave signal for RFID by the second microwave M2 shown in FIGS. In FIG. 65 (or FIG. 66), the peripheral surface portion 510C and the flange portion 510F of the partition plate 510 are arranged such that the RFID electromagnetic wave signal by the second microwave M2 transmitted from the reader / writer 2000 (M2) passes around the peripheral wall portion 223W. To prevent or suppress magnetic flux coupling with the non-facing communication module 521 (or 511).

  Thus, in the sixth embodiment, the first microwave through hole 510H1 (diameter D1) and the second microwave through hole 510H2 (diameter D2) are formed in the main body portion (bottom plate portion) of the partition plate 510. The IC card 600 is formed (see FIG. 64) and functions as a first and second microwave type.

  Here, the sixth embodiment of 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 is summarized as follows. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 65 to 67), a solid line indicates that magnetic flux coupling is established, and a broken line indicates that magnetic flux coupling is not established.

(First Aspect) Simultaneous individual transmission / reception between the front side communication module 111 and the reader / writer 1000 (M1) and between the front side communication module 511 and the reader / writer 2000 (M2) <FIG. 65>
When the magnetic flux coupling described in [A1] and [A2] 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, magnetic flux coupling occurs only between the front side communication module 111 and the reader / writer 1000 (M1) and between the facing side communication module, that is, the front side communication module 511 and the reader / writer 2000 (M2), and the first and second microwaves are generated. Individual transmission / reception of RFID electromagnetic wave signals by M1 and M2 becomes possible.

[A1] When a transmission signal (for example, a read command signal) by the first microwave M1 from the antenna 1000A (M1) of the reader / writer 1000 (M1) is received by the antenna 111A, an electromotive force is generated in the front side communication module 111, A response signal (for example, a data signal read from the data storage unit of the front side communication module 111) transmitted from the antenna 111A at the transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M1).
[A2] When a transmission signal (for example, a read command signal) by the second microwave M2 from the antenna 2000A (M2) of the reader / writer 2000 (M2) is received by the antenna 511A, an electromotive force is generated in the front side communication module 511, A response signal (for example, a data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M2).

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surface 510fs of the partition plate 510 is blocked or suppressed by the through holes 510H1 and 510H2.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface 510fs to the non-facing main surface 510ns, or an eddy current generated on the non-facing main surface 510ns by a transmission signal that circulates outside the partition plate 510, It is inhibited by the through holes 510H1 and 510H2.
[C] Transmission signal through-holes 510H1 and 510H2 are blocked by diameter D1 <wavelength λ1 and diameter D2 <wavelength λ2, and the magnetic field necessary for generating electromotive force in the non-face-to-face communication modules, that is, the back-side communication modules 121 and 521 is Hard to reach.
[D] Due to the presence of the antenna communication distance differences L ′ (M1) −L (M1), L ′ (M2) −L (M2) and the offset amounts d (M1) and d (M2) between the communication modules, Since the face-to-face communication module (here, the back-side communication modules 121, 521) and the face-to-face communication module (here, the front-side communication modules 111, 511) have a difference in receiving / sending timing, malfunction due to poor response is avoided. .

(Second Mode) Simultaneous individual transmission / reception between the back side communication module 121 and the reader / writer 1000 (M1) and between the back side communication module 521 and the reader / writer 2000 (M2) <FIG. 66>
When the magnetic flux coupling described in [B1] and [B2] 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, magnetic flux coupling is generated only between the back side communication module 121 and the reader / writer 1000 (M1) and between the facing side communication module, that is, the back side communication module 521 and the reader / writer 2000 (M2), and the first and second microwaves are generated. Simultaneous and individual transmission / reception of RFID electromagnetic wave signals by M1 and M2 becomes possible.

[B1] When a transmission signal (for example, a read command signal) by the first microwave M1 from the antenna 1000A (M1) of the reader / writer 1000 (M1) is received by the antenna 121A, an electromotive force is generated in the back side communication module 121, A response signal (for example, a data signal read from the data storage unit of the front side communication module 121) transmitted from the antenna 121A at the transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M1).
[B2] When a transmission signal (for example, a read command signal) by the second microwave M2 from the antenna 2000A (M2) of the reader / writer 2000 (M2) is received by the antenna 521A, an electromotive force is generated in the back side communication module 521, A response signal (for example, a data signal read from the data storage unit of the front side communication module 521) transmitted from the antenna 521A at the transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M2).

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surface 510fs of the partition plate 510 is blocked or suppressed by the through holes 510H1 and 510H2.
[B] A magnetic field generation phenomenon based on an eddy current propagating from the facing main surface 510fs to the non-facing main surface 510ns, or an eddy current generated on the non-facing main surface 510ns by a transmission signal that circulates outside the partition plate 510, It is inhibited by the through holes 510H1 and 510H2.
[C] Transmission signal through-holes 510H1 and 510H2 are blocked by diameter D1 <wavelength λ1 and diameter D2 <wavelength λ2, and the magnetic field necessary for generating electromotive force in the non-face-to-face communication modules, that is, the front-side communication modules 111 and 511 is Hard to reach.
[D] Due to the presence of the antenna communication distance differences L ′ (M1) −L (M1), L ′ (M2) −L (M2) and the offset amounts d (M1) and d (M2) between the communication modules, Since the face-to-face communication module (here, the front-side communication modules 111 and 511) and the face-to-face communication module (here the back-side communication modules 121 and 521) differ in receiving / transmitting timing, malfunctions due to poor response are avoided. .

(Third Aspect) Between the front communication module 111 and the first reader / writer 1000 (M1), between the back communication module 121 and the second reader / writer 3000 (M1), and between the front communication module 511 and the first reader / writer 3000 (M1). Simultaneous individual transmission / reception between the reader / writer 2000 (M2) and the backside communication module 521 and the second reader / writer 4000 (M2) <FIG. 67>.
A second reader / writer 3000 (M1) having a planar antenna 3000A (M1) facing the back side communication module 121 and capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A (M1). ) Are arranged separately from the first reader / writer 1000 (M1) to form the first set, and face the back side communication module 521, and have the same frequency range (2.45 GHz ± 130 MHz as the antenna 2000A (M2)). Alternatively, the second reader / writer 4000 (M2) having the planar antenna 4000A (M2) capable of communication at 2.45 GHz ± 5%) is arranged separately from the first reader / writer 2000 (M2), and the second set is formed. This is the case.

  Even in this case, the magnetic flux coupling described in [A1], [B1], [A2], and [B2] below is established, and a plurality of [a] to [d] including at least [a] and [b] are included. As a result of this phenomenon, the front-side communication module 111 and the first reader / writer 1000 (M1), the back-side communication module 121 and the second reader / writer 3000 (M1), and the front-side communication module 511 And the first reader / writer 2000 (M2) and between the back side communication module 521 and the second reader / writer 4000 (M2), magnetic flux coupling occurs, and the first and second microwaves M1 and M2 Simultaneous and individual transmission / reception of RFID electromagnetic wave signals becomes possible.

[A1] When a transmission signal (for example, a read command signal) by the first microwave M1 from the antenna 1000A (M1) of the first reader / writer 1000 (M1) is received by the antenna 111A, the facing communication module, that is, the front communication module An electromotive force is generated in 111, and a response signal (for example, a data signal read from the data storage unit of the front side communication module 111) transmitted from the antenna 111A at the transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M1). Is done.
[B1] When a transmission signal (for example, a read command signal) by the first microwave M1 from the antenna 3000A (M1) of the second reader / writer 3000 (M1) is received by the antenna 121A, the facing communication module, that is, the back communication module An electromotive force is generated in 121, and a response signal (for example, a data signal read from the data storage unit of the front side communication module 121) transmitted from the antenna 121A at the transmission / reception timing controlled by the data processing unit is received by the antenna 3000A (M1). Is done.

[A2] When a transmission signal (for example, a read command signal) by the second microwave M2 from the antenna 2000A (M2) of the first reader / writer 2000 (M2) is received by the antenna 511A, the facing communication module, that is, the front communication module An electromotive force is generated in 511, and a response signal (for example, a data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M2). Is done.
[B2] When a transmission signal (for example, a read command signal) by the second microwave M2 from the antenna 4000A (M2) of the second reader / writer 4000 (M2) is received by the antenna 521A, the facing communication module, that is, the back communication module An electromotive force is generated in 521, and a response signal (for example, a data signal read from the data storage unit of the front side communication module 521) transmitted from the antenna 521A at the transmission / reception timing controlled by the data processing unit is received by the antenna 4000A (M2). Is done.

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to a transmission signal reaching the facing main surface of the partition plate 510 is blocked or suppressed by the through holes 510H1 and 510H2.
[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 510 is a through hole 510H1. , 510H2.
[C] Due to the diameter D1 <wavelength λ1 and the diameter D2 <wavelength λ2, transmission signals are prevented from passing through the through holes 510H1 and 510H2, and a magnetic field necessary for generating an electromotive force in the non-face-to-face communication module is difficult to reach.
[D] Due to the presence of the antenna communication distance differences L ′ (M1) −L (M1), L ′ (M2) −L (M2) and the offset amounts d (M1) and d (M2) between the communication modules, Since the face-to-face communication module and the face-to-face communication module have a difference in the transmission / reception timing, malfunction due to poor response is avoided.

Therefore, in the third embodiment shown in FIG.
Based on the above [A1], a data reading or writing operation executed by the first reader / writer 1000 (M1) with respect to the first data storage unit provided in the IC chip body 111M of the front side communication module 111;
-Based on the above [B1], the data reading or writing operation executed by the second reader / writer 3000 (M1) to the second data storage unit provided in the IC chip body 121M of the back side communication module 121;
Based on the above [A2], the data reading or writing operation executed by the first reader / writer 2000 (M2) to the first data storage unit provided in the IC chip body 511M of the front side communication module 511,
Based on the above [B2], a data reading or writing operation executed by the second reader / writer 4000 (M2) with respect to the second data storage unit provided in the IC chip body 521M of the back side communication module 521;
Can be processed simultaneously in parallel.

  Of course, in FIG. 67, the number of simultaneous processing operations among [A1], [B1], [A2], and [B2], in other words, four reader / writers 1000 (M1), 3000 (M1), 2000 (M2), The simultaneous operation number of 4000 (M2) can be arbitrarily set in the range of 2 to 4, and the combination can be freely selected.

  As described above, in the sixth embodiment, four (two sets) reader / writers 1000 (M1), 3000 (M1); 2000 (M2), and 4000 (M2) are used. Since data access (reading or writing) can be performed simultaneously on the data storage units of the pair (two sets) of communication modules 111, 121; 511, 521, the data capacity can be increased and the data processing can be speeded up. .

  At this time, the first and second reader / writers 1000 (M1) and 3000 (M1) of the first set have the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5 with respect to the front-side communication module 111 and the back-side communication module 121. %), And the antenna communication distances L (M1) and L ′ (M1) between the corresponding communication modules 111 and 121 and the reader / writers 1000 (M1) and 3000 (M1) are the same. It's okay. Similarly, the first and second reader / writers 2000 (M2) and 4000 (M2) of the second set have the same frequency range (2.45 GHz ± 130 MHz or 2.MHz with respect to the front-side communication module 511 and the back-side communication module 521. 45GHz ± 5%) and the same output signal, and antenna communication distances L (M2) and L ′ (M2) between the corresponding communication modules 511 and 521 and the reader / writers 2000 (M2) and 4000 (M2). ) May be the same.

(Seventh embodiment)
A seventh embodiment of the IC card according to the present invention is shown in FIGS. 68 is an exploded perspective view schematically showing the IC card, FIG. 69 is a partially broken plan view, FIG. 70 is a partially broken bottom view, FIG. 71 is a sectional view taken along line LXXI-LXXI in FIG. FIG. 3 is an enlarged perspective view of a partition plate. In the IC card 700 of the seventh embodiment, the number and arrangement of communication modules are changed with respect to the IC card 400 of the fourth embodiment, and the form of the partition plate is also partially changed.

The IC card 700 shown in FIGS. 68 to 71 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 610 (partition member) formed into a horizontally long rectangular shape in the form of a flat sheet or film;
(2) A microwave front-side communication module 511 and a back-side communication module 521 that are arranged in the vertical direction so as to be opposed to the front-side main surface and the back-side main surface of the partition plate 610 and overlap each other in plan view. (First and second communication members in the first set);
(3) A short-wave front-side communication module 311 and a back-side communication module 321 (second set) which are arranged so as to be opposed to the front-side main surface and the back-side main surface of the partition plate 610 and overlap each other in plan view and have a horizontally long rectangular shape. First and second communication members in)
(4) Electrical insulating spaces disposed between the partition plate 610 and the front-side communication modules 311 and 511 and between the partition plate 610 and the back-side communication modules 321 and 521 and corresponding to the thickness of the space between them. A horizontally-long rectangular front-side insulating sheet 12 and back-side insulating sheet 22 (first and second insulating members) that form (gap);
(5) The oblong rectangular front-side molding plate 13 and the back-side molding plate 23 which are respectively arranged outside the front-side communication modules 311 and 511 and the back-side communication modules 321 and 521 and hold the positions of the modules 311, 511, 321 and 521. (First and second molded members).

  The front protective sheet 14 and the back protective sheet 24 (first and second protective members) are as described in the first embodiment. The thickness of each component of the IC card 700 is substantially the same as that described in the first embodiment.

  The partition plate 610 is located substantially in the center in the thickness direction of the IC card 700 and is formed of a flat aluminum foil. The left partition plate 610L is formed by a straight groove (a slit 610S described later) that extends in the short side direction. It is separated (divided) into a (partition member) and a right partition plate 610R (partition member). In addition, the basic form and function of the partition plate 610 are equivalent to the partition plate 310 described in the fourth embodiment.

  Of the two pairs (two sets) of communication modules 511, 521; 311, 321, the first set of communication modules 511, 521 has a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 700, and each antenna 511A. , 521A is a planar antenna for microwaves extending in a straight line and then folded back so as to spread in a wing shape in the longitudinal direction, that is, the short side direction of the IC card 700. IC chip main bodies 511M and 521M are disposed substantially at the center in the vertical direction of the antennas 511A and 521A.

  In this embodiment, both the front-side communication module 511 and the back-side communication module 521 are for microwaves and have the same specifications, and the wiring board 511S and the wiring board 521S have the same outer shape and are back to back at the same position in plan view. A pair (one set) of communication modules is configured to overlap each other in a state (see FIGS. 69 and 70). The microwave M is set to a frequency range of 2.45 GHz ± 130 MHz (or 2.45 GHz ± 5%), for example, and the antennas 511A and 521A of the pair of communication modules 511 and 521 and the antenna 1000A (of the reader / writer 1000 (M)). M) can be transmitted to and received from (see FIGS. 73 and 74).

  On the other hand, the second set of communication modules 311 and 321 has a rectangular shape elongated in the lateral direction (left and right direction) of the IC card 700, and each antenna 311A and 321A is formed in a rectangular spiral shape over a substantially entire surface of the IC card 700 a plurality of times. This is a short-wave loop (or coil) antenna that circulates (four times in the figure). IC chip bodies 311M and 321M are arranged at the corners of either of the antennas 311A and 321A having a rectangular loop shape.

  In this embodiment, both the front-side communication module 311 and the back-side communication module 321 are for the short wave and have the same specifications, and the wiring board 311S and the wiring board 321S have a rectangular shape similar to the card outline, and have the same outline. Are arranged in a back-to-back state at substantially the same position in plan view to constitute a pair (one set) of communication modules (see FIGS. 69 and 70). 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 short wave S is set to a frequency range of 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), for example, and the antennas 311A and 321A of the pair of communication modules 311 and 321 and the antenna 2000A of the reader / writer 2000 (S). (S) can be transmitted and received (see FIGS. 73 and 74).

  As described above, the IC card 700 of the seventh embodiment is described in the microwave communication modules 511 and 521 described in the sixth embodiment (see FIG. 60) and the fourth embodiment (see FIG. 31). In addition, two pairs (two sets) of communication modules including short-wave communication modules 311 and 321 are provided. Specifically, in FIG. 69 (or FIG. 70), the microwave communication module 511 (or 521) is placed inside the rectangular loop antenna 311A (or 321A) constituting the shortwave communication module 311 (or 321). Is placed. That is, in the seventh embodiment, among the two pairs (two sets) of communication modules described in the sixth embodiment, the first microwave communication modules 111 and 121 are replaced with short wave communication modules 311 and 321. It can also be regarded as being done. In the seventh and subsequent embodiments, (M) at the end of the code represents for the microwave M, and (S) represents for the short wave S.

  As shown in FIG. 73, the reader / writer 1000 (M) fixedly arranged communicates with the front-side communication module 511 on the front side (left side in the figure) of the IC card 700 that slides along the main surface (up and down in the figure). In this case, the main surfaces on the front side (left side) of the partition plates 610L and 610R (610) are facing main surfaces 610Lfs and 610Rfs, and the main surfaces on the back side (right side) are non-facing main surfaces 610Lns and 610Rns. A front-side communication module 511 positioned between the reader / writer 1000 (M) and the partition plates 610L and 610R (610) is overlapped on the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as a facing-side communication module. In addition, the back side communication module 521 that is not positioned between the reader / writer 1000 (M) and the partition plates 610L and 610R (610) serves as a non-face-to-face communication module, and the non-face-to-face main surface of the partition plates 610L and 610R (610). 610Lns and 610Rns.

  Similarly, when the reader / writer 2000 (S) that is fixedly arranged communicates with the front communication module 311 on the front side of the IC card 700 that slides along the main surface, the front side (left side) of the partition plates 610L and 610R (610). The main surfaces are the facing main surfaces 610Lfs and 610Rfs, and the back (right) main surfaces are the non-facing main surfaces 610Lns and 610Rns. A front-side communication module 311 located between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) is overlapped on the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as a facing-side communication module. In addition, the back-side communication module 321 that is not located between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) serves as a non-face-to-face communication module, and the non-face-to-face main surface of the partition plates 610L and 610R (610). 610Lns and 610Rns.

  As shown in FIG. 74, the reader / writer 1000 (M), which is fixedly arranged, communicates with the back side communication module 521 on the back side (right side in the figure) of the IC card 700 that slides along the main surface (in the vertical direction in the figure). When doing so, the main surface on the back side (right side) of the partition plates 610L, 610R (610) becomes the facing main surface 610Lfs, 610Rfs, and the main surface on the front side (left side) becomes the non-facing side main surfaces 610Lns, 610Rns. The back-side communication module 521 located between the reader / writer 1000 (M) and the partition plates 610L and 610R (610) is overlapped on the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as the facing-side communication module. In addition, the front-side communication module 511 that is not located between the reader / writer 1000 (M) and the partition plates 610L and 610R (610) serves as a non-face-to-face communication module, and the non-face-to-face main surface of the partition plates 610L and 610R (610). 610Lns and 610Rns.

  Similarly, when the fixedly arranged reader / writer 2000 (S) communicates with the back side communication module 321 on the back side of the IC card 700 that slides along the main surface, the main surface on the back side of the partition plates 610L and 610R (610). Are the facing main surfaces 610Lfs and 610Rfs, and the front main surfaces are the non-facing main surfaces 610Lns and 610Rns. The back-side communication module 321 positioned between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) is overlapped on the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as the facing-side communication module. In addition, the front-side communication module 311 that is not located between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) serves as a non-face-to-face communication module, and the non-face-to-face main surface of the partition plates 610L and 610R (610). 610Lns and 610Rns.

  73. Magnetic flux coupling is generated only between the antenna 511A of the facing communication module 511 in FIG. 73 (or the antenna 521A of the facing communication module 521 in FIG. 74) and the antenna 1000A (M) of the reader / writer 1000 (M). In order to enable individual transmission / reception of RFID electromagnetic wave signals by the microwave M, the IC card 700 further includes the following structure.

  When the IC card 700 is seen through from the overlapping direction in FIG. 73 (or FIG. 74), the antenna 511A (or 521A) of the facing communication module 511 (or 521) and the non-facing communication module 521 are placed on the right partition plate 610R. A through-hole 610H as an open region is formed by being removed in a hole shape so as to partially overlap with the antenna 521A (or 511A) of (or 511) (see FIGS. 69 and 70).

  More specifically, the through hole 610H shown in FIG. 73 (or FIG. 74) is a planar antenna 511A (or 521A) of the facing communication module 511 (or 521) projected on the facing main surface 610Rfs of the partition plate 610. Or a part of the planar antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) projected onto the non-face-side main surface 610Rns. One circular hole is formed (see FIGS. 69 and 70). The maximum hole diameter, that is, the diameter D (D ≦ 6 mm in this embodiment) of the through-hole 610H is the wavelength λM of the microwave M that is an electromagnetic wave for RFID emitted from the reader / writer 1000 (M) (λM≈in this embodiment). 12 cm) (D <λM).

  In addition, magnetic flux coupling occurs only between the antenna 311A of the facing communication module 311 in FIG. 73 (or the antenna 321A of the facing communication module 321 in FIG. 74) and the antenna 2000A (S) of the reader / writer 2000 (S). In order to enable individual transmission / reception of the RFID electromagnetic wave signal using the short wave S, the IC card 700 further includes the following structure.

  When the IC card 700 is seen through from the overlapping direction in FIG. 73 (or FIG. 74), the partition plates 610L and 610R include the antenna 311A (or 321A) and the non-face-to-face communication module of the facing communication module 311 (or 321). A slit 610 </ b> S as an open area is formed so as to be partially removed so as to partially overlap with the antenna 321 </ b> A (or 311 </ b> A) of 321 (or 311) (see FIGS. 69 and 70).

  Specifically, the slit 610S shown in FIG. 73 (or FIG. 74) is a loop shape of the facing communication module 311 (or 321) projected onto the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R. 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 610Lns and 610Rns are simultaneously traversed at two locations. In this state, a single slit 610S is formed (see FIGS. 69 and 70). The maximum value of the antenna transverse width of the slit 610S, that is, the maximum transverse width W (W ≦ 10 mm in this embodiment) is a wavelength λS of a short wave that is an electromagnetic wave for RFID emitted from the reader / writer 2000 (S) (in this embodiment). (λS≈22 m) is set (W <λS).

  As shown in FIGS. 69 and 70, when the IC card 700 is seen through from the overlapping direction, the outer peripheral edges of the partition plates 610L and 610R (610) are retracted and arranged inside the outline of the IC card 700. Further, the outer peripheral edges of the front-side communication modules 511 and 311 and the back-side communication modules 521 and 321 are arranged to be retracted inward from the outer peripheral edges of the partition plates 610L and 610R (610) (see FIG. 71).

  Similarly, as shown in FIGS. 69 and 70, when the IC card 700 is seen through from the overlapping direction, the front-side insulating sheet 12 and the back-side insulating sheet 22 are respectively connected to the front-side communication modules 511 and 311 and the back-side communication. It is formed larger than the modules 521 and 321 and is held in a state of closing (or covering) the through holes 610H and the slits 610S of the partition plates 610L and 610R (610) (see FIG. 71). In this embodiment, both the front-side insulating sheet 12 and the back-side insulating sheet 22 have the same shape and size as those obtained by combining the partition plates 610L and 610R and the slit 610S (see FIG. 68).

  Returning to FIGS. 73 and 74, by providing the partition plate 610R (610) with a through-hole 610H, an RFID electromagnetic wave signal generated by the microwave M from the reader / writer 1000 (M) is applied to the facing main surface 610Rfs of the partition plate 610R. It is possible to prevent or suppress a phenomenon in which an eddy current is generated to generate a demagnetizing field. The through-hole 610H is an RFID electromagnetic wave signal generated by an eddy current generated on the facing main surface 610Rfs and propagating through the partition plate 610R to reach the non-facing main surface 610Rns, or by the microwave M from the reader / writer 1000 (M). Among them, the phenomenon of generating a magnetic field on the non-facing side main surface 610Rns can be inhibited by the function of going around the outside of the partition plate 610R and dividing the eddy current generated on the non-facing side main surface 610Rns.

  Further, in FIG. 73 and FIG. 74, by providing the partition plate 610 with slits 610S, vortices are generated on the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R by the electromagnetic wave signal for RFID by the short wave S from the reader / writer 2000 (S). It is possible to prevent or suppress a phenomenon in which a current is generated to generate a demagnetizing field. The slit 610S is generated by the eddy current generated on the facing main surfaces 610Lfs and 610Rfs and propagating through the partition plates 610L and 610R to reach the non-facing main surfaces 610Lns and 610Rns, or by the short wave S from the reader / writer 2000 (S). Of the electromagnetic wave signals for RFID, the function of cutting around the outside of the partition plates 610L and 610R to divide eddy currents generated at the non-facing side main surfaces 610Lns and 610Rns inhibits the phenomenon of generating a magnetic field on the non-facing side main surfaces 610Lns and 610Rns You can also

  Thus, the through-hole 610H and the slit 610S complement the attenuation or shielding action of the partition plate 610 against electromagnetic waves. That is, due to the through-hole 610H and the slit 610S, only the facing communication modules 511 and 311 in FIG. 73 and only the facing communication modules 521 and 321 in FIG. 74 are RFIDs from the reader / writers 1000 (M) and 2000 (S). A function of receiving the electromagnetic wave signal for use and transmitting the response signal to the reader / writer 1000 (M), 2000 (S) is provided. Therefore, the through-hole 610H and the slit 610S enable individual transmission / reception of the RFID electromagnetic wave signal by the microwave M and the short wave S shown in FIGS.

  71, when the IC card 700 is seen through from the overlapping direction, the front-side communication module 511 and the back-side communication module 521 are inside the horizontally long rectangular card outline, and the long side direction (that is, the horizontal direction, FIG. 71). In the left-right direction) are offset from each other (齟齬). Specifically, the offset amount d (M) between the two communication modules 511 and 521, in other words, the distance d (between the connection points of the antennas 511A and 521A of the two communication modules 511 and 521 and the IC chip bodies 511M and 521M. M), in other words, a separation distance d (M) is provided in the card long side direction of both IC chip bodies 511M and 521M.

  Therefore, in FIG. 73 (or FIG. 74), the electromagnetic wave signal for RFID by the microwave M transmitted from the antenna 1000A (M) of the reader / writer 1000 (M) is converted into the facing communication module 511 (or 521) and the facing insulating sheet. 12 (or 22) and trying to pass through the through hole 610H of the partition plate 610R, the diameter D is smaller than the wavelength λM, so that the passage itself is hindered, causing the non-facing communication module 521 (or 511) to start. The magnetic field required for power generation is difficult to reach. Even if a part of the electromagnetic wave signal for RFID reaches the antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) through the through hole 610H, the antenna communication with the reader / writer 1000 (M). The non-face-to-face side communication module 521 (or 511) and the face-to-face side communication module 511 (or 521) are at the transmission / reception timing by the distance difference L ′ (M) −L (M) and the offset amount d (M) described above. As a result, a malfunction due to poor response is avoided.

  Due to the presence of such a through-hole 610H, the non-face-to-face communication module 521 and the reader / writer 1000 (M) in FIG. 73, and the non-face-to-face communication module 511 and the reader / writer 1000 (M) in FIG. Magnetic flux coupling is less likely to occur between them. Therefore, the through hole 610H enables individual transmission / reception of the RFID electromagnetic wave signal by the microwave M shown in FIGS. 73 and 74.

  71, when the IC card 700 is seen through from the overlapping direction, 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 in FIG. 71). They are arranged offset (方向) from each other in the left-right direction. Specifically, the offset amount d (S) 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 bodies 311M and 321M. S), in other words, a separation distance d (S) is provided in the card long side direction of both IC chip bodies 311M and 321M.

  Therefore, in FIG. 73 (or FIG. 74), the electromagnetic wave signal for RFID by the short wave S transmitted from the antenna 2000A (S) of the reader / writer 2000 (S) is converted into the facing communication module 311 (or 321) and the facing insulating sheet 12. (Or 22), and passing through the slit 610S of the partition plate 610, the maximum transverse width W is smaller than the wavelength λS, and thus the passage itself is hindered, causing the non-facing communication module 321 (or 311) to start. The magnetic field required for power generation is difficult to reach. Even if a 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 610S, the antenna communication distance with the reader / writer 2000 (S). The difference L ′ (S) −L (S) and the offset amount d (S) described above cause the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321) to differ in transmission / reception timing. Therefore, malfunction due to poor response is avoided.

  Further, in FIGS. 69 and 71, the slits 610 </ b> S are uneven positions that are deviated (i.e., deviated) from the center in the major axis direction of the respective 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 610S is 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.

  Therefore, in FIG. 73 (or FIG. 74), the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) placed in the magnetic field of the electromagnetic wave signal for RFID by the short wave S from the reader / writer 2000 (S). ), The 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, the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) is covered with the partition plates 610L and 610R except for the slit 610S when viewed from the reader / writer 2000 (S) side. 610S is provided so as to intersect with the long side of the card at an unequal position deviated (deviated) from the center in the long axis direction of the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311). Yes. Therefore, the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) has an uneven magnetic flux even in the magnetic field of the RFID electromagnetic signal due to the short wave S from the reader / writer 2000 (S). Since it passes (moves), the electromotive force necessary for driving (replying) the IC chip body 321M (or 311M) to the reader / writer 2000 (S) is not generated.

  Due to the presence of the slit 610S, in FIG. 73, between the non-facing communication module 321 and the reader / writer 2000 (S), and in FIG. 74, between the non-facing communication module 311 and the reader / writer 2000 (S). Magnetic flux coupling is less likely to occur. Therefore, the slit 610S enables individual transmission and reception of the RFID electromagnetic wave signal by the short wave S shown in FIGS.

  As described above, in the seventh embodiment, the partition plate 610 is formed with the microwave through-hole 610H (diameter D) and the short-wave slit 610S (transverse width W) (see FIG. 72). Functions as both microwave and short wave type.

  Here, the seventh embodiment of 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 is summarized as follows. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 73 to 75), the solid line indicates that magnetic flux coupling is established and the broken line indicates that magnetic flux coupling is not established.

(First Aspect) Simultaneous individual transmission / reception between the front side communication module 511 and the reader / writer 1000 (M) and between the front side communication module 311 and the reader / writer 2000 (S) <FIG. 73>
When the magnetic flux coupling described in [A1] and [A2] 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, magnetic flux coupling is generated only between the front side communication module 511 and the reader / writer 1000 (M) and between the facing side communication module, that is, the front side communication module 311 and the reader / writer 2000 (S). Individual transmission / reception of RFID electromagnetic wave signals becomes possible.

[A1] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 1000A (M) of the reader / writer 1000 (M) is received by the antenna 511A, an electromotive force is generated in the front side communication module 511, and data processing is performed. The antenna 1000A (M) receives a response signal (for example, a data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the unit.
[A2] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 2000A (S) of the reader / writer 2000 (S) is received by the antenna 311A, an electromotive force is generated in the front side communication module 311 and the data processing unit A response signal (for example, a data signal read from the data storage unit of the front side communication module 311) transmitted from the antenna 311A at the transmission / reception timing controlled by the antenna 2000A (S) is received.

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surfaces 610Lfs and 610Rfs of the partition plate 610 is blocked or suppressed by the through holes 610H and the slits 610S.
[B] An eddy current propagating from the facing main surfaces 610Lfs and 610Rfs to the non-facing main surfaces 610Lns and 610Rns, and an eddy current generated on the non-facing main surfaces 610Lfs and 610Rfs by a transmission signal that wraps around the outside of the partition plate 610 The magnetic field generation phenomenon based on this is inhibited by the through hole 610H and the slit 610S.
[C] The diameter D <wavelength λM and the transverse width W <wavelength λS inhibit transmission signals from passing through the through holes 610H and the slits 610S, and are necessary for generating electromotive force in the non-face-to-face communication modules, that is, the back-side communication modules 521 and 321. Magnetic field is hard to reach.
[D] Non-existence due to differences in antenna communication distances L ′ (M) −L (M), L ′ (S) −L (S) and offset amounts d (M) and d (S) between communication modules. Since the face-to-face communication module (here, the back-side communication module 521, 321) and the face-to-face communication module (here, the front-side communication module 511, 311) have a difference in receiving / sending timing, malfunction due to poor response is avoided. .
[E] Since the bias LC is provided in the slit 610S, the loop antenna 321A of the non-face-to-face communication module 321 does not generate an electromotive force.

(Second Aspect) Simultaneous and parallel individual transmission / reception between the back side communication module 521 and the reader / writer 1000 (M) and between the back side communication module 321 and the reader / writer 2000 (S) <FIG. 74>
When the magnetic flux coupling described in [B1] and [B2] 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, magnetic flux coupling is generated only between the back side communication module 521 and the reader / writer 1000 (M) and between the facing side communication module, that is, the back side communication module 321 and the reader / writer 2000 (S). Simultaneous and individual transmission / reception of RFID electromagnetic wave signals becomes possible.

[B1] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 1000A (M) of the reader / writer 1000 (M) is received by the antenna 521A, an electromotive force is generated in the back side communication module 521, and data processing is performed. A response signal (for example, a data signal read from the data storage unit of the front side communication module 521) transmitted from the antenna 521A at the transmission / reception timing controlled by the unit is received by the antenna 1000A (M).
[B2] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 2000A (S) of the reader / writer 2000 (S) is received by the antenna 321A, an electromotive force is generated in the back side communication module 321 and the data processing unit A response signal (for example, a data signal read from the data storage unit of the front side communication module 321) transmitted from the antenna 321A at the transmission / reception timing controlled by is received by the antenna 2000A (M2).

[A] Phenomenon of generation of eddy currents and demagnetizing fields due to transmission signals reaching the facing main surfaces 610Lfs and 610Rfs of the partition plate 610 is blocked or suppressed by the through holes 610H and the slits 610S.
[B] An eddy current propagating from the facing main surfaces 610Lfs and 610Rfs to the non-facing main surfaces 610Lns and 610Rns, and an eddy current generated on the non-facing main surfaces 610Lfs and 610Rfs by a transmission signal that wraps around the outside of the partition plate 610 The magnetic field generation phenomenon based on this is inhibited by the through hole 610H and the slit 610S.
[C] The diameter D <wavelength λM and the transverse width W <wavelength λS inhibit transmission signals from passing through the through holes 610H and slits 610S, and are necessary for generating electromotive force in the non-face-to-face communication modules, that is, the front-side communication modules 511 and 311 Magnetic field is hard to reach.
[D] Non-existence due to differences in antenna communication distances L ′ (M) −L (M), L ′ (S) −L (S) and offset amounts d (M) and d (S) between communication modules. Since the face-to-face communication module (here, the front-side communication modules 511 and 311) and the face-to-face communication module (here the back-side communication modules 521 and 321) have a difference in receiving / sending timing, malfunction due to poor response is avoided. .
[E] Since the bias LC is provided in the slit 610S, the loop antenna 311A of the non-face-to-face communication module 311 does not generate an electromotive force.

(Third Aspect) Between the front side communication module 511 and the first reader / writer 1000 (M), between the back side communication module 521 and the second reader / writer 3000 (M), and between the front side communication module 311 and the first reader / writer 3000 (M). Simultaneous reader / writer 2000 (S) and between the back side communication module 321 and the second reader / writer 4000 (S) <FIG. 75>
A second reader / writer 3000 (M) having a planar antenna 3000A (M) capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A (M) facing the back side communication module 521. ) Are arranged separately from the first reader / writer 1000 (M) to form the first set, and face the back side communication module 321 to have the same frequency range as the antenna 2000A (S) (2.45 GHz ± 130 MHz). Alternatively, the second reader / writer 4000 (S) having the loop antenna 4000A (S) capable of communication at 2.45 GHz ± 5%) is arranged separately from the first reader / writer 2000 (S), and the second set is formed. This is the case.

  Even in this case, the magnetic flux coupling described in [A1], [B1], [A2], and [B2] below is established, and a plurality of [a] to [e] including at least [a] and [b] are included. As a result of the phenomenon, the front side communication module 511 and the first reader / writer 1000 (M), the back side communication module 521 and the second reader / writer 3000 (M), and the front side communication module 311. And the first reader / writer 2000 (S), and between the back communication module 321 and the second reader / writer 4000 (S), magnetic flux coupling is generated, and the electromagnetic wave signal for RFID by the microwave M and the short wave S is generated. Simultaneous parallel individual transmission / reception becomes possible.

[A1] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 1000A (M) of the first reader / writer 1000 (M) is received by the antenna 511A, the facing communication module, that is, the front communication module 511 An electromotive force is generated, and a response signal (for example, a data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M). .
[B1] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 3000A (M) of the second reader / writer 3000 (M) is received by the antenna 521A, the communication module 521 receives the transmission module. An electromotive force is generated, and a response signal (for example, a data signal read from the data storage unit of the back side communication module 521) transmitted from the antenna 121A at the transmission / reception timing controlled by the data processing unit is received by the antenna 3000A (M). .

[A2] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 2000A (S) of the first reader / writer 2000 (S) is received by the antenna 311A, it is generated in the facing communication module, that is, the front communication module 311. A response signal (for example, a data signal read from the data storage unit of the front side communication module 311) transmitted from the antenna 311A at the transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (S).
[B2] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 4000A (S) of the second reader / writer 4000 (S) is received by the antenna 321A, the communication module 321 starts the facing communication module. 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 controlled by the data processing unit is received by the antenna 4000A (S).

[A] Phenomenon of generation of eddy current and demagnetizing field due to a transmission signal reaching the facing main surface of the partition plate 610 is blocked or suppressed by the through-hole 610H and the slit 610S.
[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 wraps around the outside of the partition plate 610 is a through hole 610H. , Is inhibited by the slit 610S.
[C] The diameter D <wavelength λM and the transverse width W <wavelength λS inhibit the transmission signal from passing through the through-hole 610H and the slit 610S, and the magnetic field necessary for generating the electromotive force in the non-face-to-face communication module is difficult to reach.
[D] Non-existence due to differences in antenna communication distances L ′ (M) −L (M), L ′ (S) −L (S) and offset amounts d (M) and d (S) between communication modules. Since the face-to-face communication module and the face-to-face communication module have a difference in transmission / reception timing, malfunction due to poor response is avoided.
[E] Since the bias LC is provided in the slit 610S, the loop antenna of the non-face-to-face communication module does not generate an electromotive force.

Therefore, in the third embodiment shown in FIG.
Based on the above [A1], a data reading or writing operation executed by the first reader / writer 1000 (M) on the first data storage unit provided in the IC chip body 511M of the front side communication module 511,
-Based on the above [B1], the data reading or writing operation executed by the second reader / writer 3000 (M) with respect to the second data storage unit provided in the IC chip body 521M of the back side communication module 521;
Based on the above [A2], the data reading or writing operation executed by the first reader / writer 2000 (S) with respect to the first data storage unit provided in the IC chip body 311M of the front side communication module 311;
Based on the above [B2], a data reading or writing operation executed by the second reader / writer 4000 (S) to the second data storage unit provided in the IC chip body 321M of the back side communication module 321;
Can be processed simultaneously in parallel.

  Of course, in FIG. 75, the number of simultaneous processing operations among [A1], [B1], [A2], and [B2], in other words, four reader / writers 1000 (M), 3000 (M), 2000 (S), The simultaneous operation number of 4000 (S) can be arbitrarily set within a range of 2 to 4, and a combination can be freely selected.

  In this way, in the seventh embodiment, two (two sets) reader / writers 1000 (M), 3000 (M); 2000 (S), 4000 (S) are used. Since data access (reading or writing) can be performed simultaneously on the data storage units of the pair (two sets) of communication modules 511, 521; 311, 321, the data capacity can be increased and the data processing can be speeded up. .

  At this time, the first and second reader / writers 1000 (M) and 3000 (M) of the first set have the same frequency range (2.45 GHz ± 130 MHz or 2 for the front side communication module 511 and the back side communication module 521. .45 GHz ± 5%) at the same time, and the antenna communication distances L (M) and L ′ () between the corresponding communication modules 511 and 521 and the reader / writers 1000 (M) and 3000 (M). M) may be the same. Similarly, the first and second reader / writers 2000 (S) and 4000 (S) in the second set have the same frequency range (13.56 MHz ± 0.68 MHz or with respect to the front side communication module 311 and the back side communication module 321. (13.56 MHz ± 5%), and the same communication signals 311 and 321 and the antenna communication distances L (S) and L ′ between the reader / writers 2000 (S) and 4000 (S). (S) may be the same.

  As shown in FIG. 71, in this embodiment, the short-wave wiring board 311S and the microwave wiring board 511S are laminated and formed. In the short-wave wiring board 311S, the loop antenna 311A is formed. The IC card 700 can be thinned by partially removing the inside to form a recess and embedding the microwave wiring substrate 511S in the removed recess space. The same applies to the relationship between the short wave wiring board 321S and the microwave wiring board 521S.

(Eighth Example)
An eighth embodiment of the IC card according to the present invention is shown in FIGS. 76 is an exploded perspective view schematically showing the IC card, FIG. 77 is a partially broken plan view, FIG. 78 is a partially broken bottom view, and FIG. 79 is a sectional view taken along line LXXIX-LXXIX in FIG. In the IC card 800 of the eighth embodiment, the number of communication modules arranged is changed and the form of the partition plate is partially changed compared to the IC card 700 of the seventh embodiment.

The IC card 800 shown in FIGS. 76 to 79 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 short-wave front-side communication module 311 and a back-side communication module 321 (first and second) that are arranged so as to be opposed to the front-side main surface and the back-side main surface of the partition plate 310 in a plan view and have a horizontally long rectangular shape. Second communication member);
(3) A microwave front side communication module 611 (third communication member) arranged in the vertical direction so as to face only the front side main surface of the partition plate 310 and overlap in a plan view and has a vertically long rectangular shape;
(4) An electrical insulating space (gap between the partition plate 310 and the front-side communication modules 311 and 611 and between the partition plate 310 and the back-side communication module 321, corresponding to its own thickness. ) Forming a horizontally long front side insulating sheet 12 and a back side insulating sheet 22 (first and second insulating members);
(5) The oblong rectangular front side molding plate 13 and the back side molding plate 23 (first and rear side molding plates 23, which are arranged outside the front side communication modules 311 and 611 and the back side communication module 321 and hold the modules 311, 611 and 321 respectively. Second molded 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 constituent material of the IC card 800 is substantially the same as described in the first embodiment.

  The partition plate 310 is located substantially in the center in the thickness direction of the IC card 800 and is made of a flat aluminum foil. The left partition plate 310L is formed by a straight groove (a slit 310S described later) that extends in the short side direction. It is separated (divided) into a (partition member) and a right partition plate 310R (partition member). The same partition plate 310 as that of the fourth embodiment (see FIG. 31) is used.

  Of the three communication modules 311, 321, 611, the communication modules 311, 321 that make a pair have a rectangular shape elongated in the lateral direction (left-right direction) of the IC card 800, and the antennas 311 A, 321 A are connected to the IC card 800. This is a short-wave loop (or coil) antenna that circulates a plurality of times (four times in the figure) in a rectangular spiral shape over almost the entire surface. IC chip bodies 311M and 321M are arranged at the corners of either of the antennas 311A and 321A having a rectangular loop shape.

  In this embodiment, similarly to the seventh embodiment, the front-side communication module 311 and the back-side communication module 321 are both for the short wave S and have the same specifications, and the wiring board 311S and the wiring board 321S are similar to the card outline. A pair of communication modules that are rectangular and have the same outer shape are arranged so as to be back to back at substantially the same position in plan view (see FIGS. 77 and 78). 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 short wave S is set to a frequency range of 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), for example, and the antennas 311A and 321A of the pair of communication modules 311 and 321 and the antenna 1000A of the reader / writer 1000 (S). (S) can be transmitted and received (see FIGS. 80 and 81).

  On the other hand, the single front-side communication module 611 has a rectangular shape that is elongated in the vertical direction (vertical direction) of the IC card 800, and the antenna 611A extends linearly and then turns back, so that the vertical direction, that is, the short side direction of the IC card 800 It is a planar antenna for microwaves spreading in a wing shape. The IC chip main body 611M is disposed substantially at the center in the vertical direction of the antenna 611A.

  In this embodiment, the front side communication module 611 is for a microwave set to a single frequency range independent of the frequency range of the short wave S, for example, a frequency range of 2.45 GHz ± 130 MHz (or 2.45 GHz ± 5%). Therefore, transmission / reception is possible between the antenna 611A of the communication module 611 and the antenna 5000A (M) of the reader / writer 5000 (M) (see FIGS. 82 and 83).

  As described above, the IC card 800 of the eighth embodiment is newly provided with a single microwave unit in addition to the pair of shortwave communication modules 311 and 321 described in the fourth embodiment (see FIG. 31). A communication module 611 is provided. Specifically, in FIG. 77 (or FIG. 78), a single microwave communication module 611 is disposed inside a rectangular loop antenna 311A constituting one of the shortwave communication modules 311. That is, in the eighth embodiment, it is considered that one microwave communication module 521 is deleted from the two pairs (two sets) of communication modules described in the seventh embodiment (see FIG. 68). You can also

  As shown in FIG. 80, the reader / writer 1000 (S) fixedly arranged communicates with the front-side communication module 311 on the front side (left side in the figure) of the IC card 800 that slides along the main surface (up and down in the figure). When doing so, the front side (left side) main surfaces of the partition plates 310L, 310R (310) become the facing side main surfaces 310Lfs, 310Rfs, and the back side (right side) main surfaces become the non-facing side main surfaces 310Lns, 310Rns. The front-side communication module 311 located between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) is overlapped on the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R (310) as a facing-side communication module. In addition, the back side communication module 321 not positioned between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) serves as a non-face-to-face communication module, and the non-face-side main surface of the partition plates 310L and 310R (310). It is overlaid on 310Lns and 310Rns.

  As shown in FIG. 81, the reader / writer 1000 (S) fixedly arranged communicates with the back side communication module 321 on the back side (right side in the figure) of the IC card 800 that slides along the main surface (vertical direction in the figure). When doing so, the main surfaces on the back side (right side) of the partition plates 310L, 310R (310) become the facing main surfaces 310Lfs, 310Rfs, and the front side (left side) main surfaces become the non-facing side main surfaces 310Lns, 310Rns. The back side communication module 321 positioned between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) is overlapped on the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R (310) as a facing side communication module. In addition, the front-side communication module 311 that is not located between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) serves as a non-face-to-face communication module, and the non-face-side main surface of the partition plates 310L and 310R (310). It is overlaid on 310Lns and 310Rns.

  As shown in FIG. 82, when the IC card 800 slides along the main surface (vertically in the figure), the front side communication module 611 is fixedly arranged on the front side (left side in the figure) of the IC card 800. The reader / writer 5000 (M) communicates alone (that is, in a form independent of the pair of communication modules 311 and 321).

  Then, magnetic flux coupling is generated only between the antenna 311A of the facing communication module 311 in FIG. 80 (or the antenna 321A of the facing communication module 321 in FIG. 81) and the antenna 1000A (S) of the reader / writer 1000 (S). In order to enable individual transmission / reception of RFID electromagnetic signals by the short wave S, the IC card 800 further includes a structure as described below.

  When the IC card 800 is seen through from the overlapping direction in FIG. 80 (or FIG. 81), the partition plates 310L and 310R include the antenna 311A (or 321A) of the facing communication module 311 (or 321) and the non-facing communication module. A slit 310S serving as an open region is formed so as to be partially removed so as to partially overlap the antenna 321A (or 311A) of the antenna 321 (or 311) (see FIGS. 77 and 78).

  Specifically, the slit 310S shown in FIG. 80 (or FIG. 81) 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. 77 and 78). The maximum value of the transverse width of the antenna of the slit 310S, that is, the maximum transverse width W (W ≦ 10 mm in this embodiment) is a wavelength λS of a short wave that is an electromagnetic wave for RFID emitted from the reader / writer 1000 (S) (in this embodiment). (λS≈22 m) is set (W <λS).

  As shown in FIGS. 77 and 78, when the IC card 800 is seen through from the overlapping direction, the outer peripheral edges of the partition plates 310L and 310R (310) are retracted to the inside from the outline of the IC card 800. 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. 79).

  Similarly, as shown in FIGS. 77 and 78, when the IC card 800 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 larger and is held in a state of closing (or covering) the slit 310S of the partition plates 310L and 310R (310) (see FIG. 79). In this embodiment, both the front-side insulating sheet 12 and the back-side insulating sheet 22 have the same shape and size as those obtained by combining the partition plates 310L and 310R and the slit 310S (see FIG. 76).

  Further, in FIG. 80 and FIG. 81, by providing the partition plate 310 with the slit 310S, a vortex is generated in the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R by the RFID electromagnetic wave signal due to the short wave S from the reader / writer 1000 (S). It is possible to prevent or suppress a phenomenon in which a current is generated to generate a demagnetizing field. In addition, the slit 310S is generated by the eddy current generated on the facing main surfaces 310Lfs and 310Rfs and propagating through the partition plates 310L and 310R to the non-facing main surfaces 310Lns and 310Rns, or by the short wave S from the reader / writer 1000 (S). Of the electromagnetic wave signals for RFID, the function of breaking 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 inhibits the phenomenon of generating a magnetic field on the non-facing side main surfaces 310Lns and 310Rns. You can also

  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. 80 and only the facing communication module 321 in FIG. 81 receive the electromagnetic wave signal for RFID from the reader / writer 1000 (S), and a response signal to it. A function of transmitting to the reader / writer 1000 (S) is added. Therefore, the slit 310S enables individual transmission / reception of the RFID electromagnetic wave signal by the short wave S shown in FIGS.

  79, when the IC card 800 is seen through from the overlapping direction, 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 in FIG. 79). They are arranged offset (方向) from each other in the left-right direction. Specifically, the offset amount d (S) 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 bodies 311M and 321M. S), in other words, a separation distance d (S) is provided in the card long side direction of both IC chip bodies 311M and 321M.

  Therefore, in FIG. 80 (or FIG. 81), the electromagnetic wave signal for RFID by the short wave S transmitted from the antenna 1000A (S) of the reader / writer 1000 (S) is converted into the facing communication module 311 (or 321) and the facing insulating sheet 12. Even if it passes through (or 22) and tries to pass through the slit 310S of the partition plate 310, since the maximum transverse width W is smaller than the wavelength λS, the passage itself is hindered, causing the non-facing communication module 321 (or 311) to start. The magnetic field required for power generation is difficult to reach. Even if a 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 antenna communication distance with the reader / writer 1000 (S) The difference L ′ (S) −L (S) and the offset amount d (S) described above cause the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321) to differ in transmission / reception timing. Therefore, malfunction due to poor response is avoided.

  Further, in FIGS. 77 and 79, the slit 310S is an uneven position that is deviated (that is, deviated) from the center in the major axis direction of each of the loop antennas 311A and 321A 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.

  Therefore, in FIG. 80 (or FIG. 81), the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) placed in the magnetic field of the electromagnetic wave signal for RFID due to the short wave S from the reader / writer 1000 (S). ), The 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, 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 when viewed from the reader / writer 1000 (S) side. 310S is provided to cross the long side of the card at an unequal position that is deviated (deviated) from the center in the long axis direction of the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311). Yes. Therefore, the loop antenna 321A (or 311A) of the non-face-to-face communication module 321 (or 311) has an uneven magnetic flux even in the magnetic field of the RFID electromagnetic wave signal due to the short wave S from the reader / writer 1000 (S). Since it passes (moves), the electromotive force necessary for driving (replying) to the reader / writer 1000 (S) by driving the IC chip body 321M (or 311M) is not generated.

  Due to the presence of such a slit 310S, between the non-facing communication module 321 and the reader / writer 1000 (S) in FIG. 80, and between the non-facing communication module 311 and the reader / writer 1000 (S) in FIG. Magnetic flux coupling is less likely to occur. Therefore, the slit 310S enables individual transmission / reception of the RFID electromagnetic wave signal by the short wave S shown in FIGS.

  As described above, in the eighth embodiment, the partition plate 310 is formed with the short wave slit 310S (transverse width W) (see FIG. 76), and the pair of short wave communication modules 311 and 321 and the single microwave communication module. IC card 800 including 611 functions as a combined microwave / short wave type.

  Here, the eighth embodiment of 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 is summarized as follows. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 80 to 83), the solid line indicates that magnetic flux coupling is established and the broken line indicates that magnetic flux coupling is not established.

(First Aspect) Individual Transmission / Reception Between Front-side Communication Module 311 and Reader / Writer 1000 (S) <FIG. 80>
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 (S), and individual electromagnetic wave signals for RFID using short waves S can be transmitted and received.
[A] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 1000A (S) of the reader / writer 1000 (S) is received by the antenna 311A, an electromotive force is generated in the front side communication module 311 and the data processing unit A response signal (for example, a data signal read from the data storage unit of the front side communication module 311) transmitted from the antenna 311A at the transmission / reception timing controlled by the antenna 1000A (S) is received.

[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 this is inhibited by the slit 310S.
[C] Transverse width W <wavelength λS inhibits the transmission signal from passing through slit 310S, and a magnetic field necessary for generating an 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 face-to-face communication due to the difference in antenna communication distance L ′ (S) −L (S) and the offset amount d (S) between the communication modules. The module (here, the front-side communication module 311) has a difference in transmission / reception timing, so that malfunction due to 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 (S) <FIG. 81>
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 (S), and the RFID electromagnetic wave signal by the short wave S can be individually transmitted and received.
[B] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 1000A (S) of the reader / writer 1000 (S) is received by the antenna 321A, an electromotive force is generated in the back side communication module 321 and the data processing unit 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 controlled by the antenna 1000A (S) is received.

[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 this is inhibited by the slit 310S.
[C] Crossing width W <wavelength λS inhibits transmission signal 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 face-side communication module 311) and face-to-face communication due to the difference in antenna communication distance L ′ (S) −L (S) and the presence of the offset amount d (S) between the communication modules. The module (here, the back-side communication module 321) has a difference in transmission / reception timing, so that malfunction due to 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) Independent Transmission / Reception Between Front-side Communication Module 611 and Reader / Writer 5000 (M) <FIG. 82>
A reader / writer having a planar antenna 5000A (M) that can communicate with the front-side communication module 611 in a frequency range of a microwave M different from the short wave S (eg, 2.45 GHz ± 130 MHz or 2.45 GHz ± 5%). This is a case where 5000 (M) is arranged separately from the reader / writer 1000 (S).
In this case, when the magnetic coupling described in [X] below is established by the independent microwave M, the front-side communication module 611 and the reader / writer 5000 (M) independently transmit and receive the electromagnetic wave signal for RFID by the microwave M. Is possible.

[X] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 5000A (M) of the reader / writer 5000 (M) is received by the antenna 611A, an electromotive force is generated in the front side communication module 611, and data processing is performed. A response signal (for example, a data signal read from the data storage unit of the front side communication module 611) transmitted from the antenna 611A at the transmission / reception timing controlled by the unit is received by the antenna 5000A (M).

(Fourth Mode) Simultaneous and parallel individual transmission / reception between the front side communication module 311 and the first reader / writer 1000 (S), and between the back side communication module 321 and the second reader / writer 2000 (S), and Independent transmission / reception between the front side communication module 611 and the reader / writer 5000 (M) <FIG. 83>
This is the case shown below. That is, the loop antenna 2000A (S) capable of communicating in the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) as the antenna 1000A (S) is opposed to the back side communication module 321. The second reader / writer 2000 (S) is arranged separately from the first reader / writer 1000 (S). On the other hand, facing the front-side communication module 611, communication is performed in a microwave M frequency range (for example, 2.45 GHz ± 130 MHz or 2.45 GHz ± 5%) different from the short-wave S antennas 1000A (S) and 2000A (S). Another reader / writer 5000 (M) having a possible planar antenna 5000A (M) is arranged.

  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. An electromagnetic wave signal for RFID generated by the short wave S is generated by magnetic flux coupling only between the front side communication module 311 and the first reader / writer 1000 (S) and between the back side communication module 321 and the second reader / writer 2000 (S). Simultaneous parallel individual transmission / reception becomes possible. On the other hand, when the magnetic coupling described in [X] below is established by the independent microwave M, the front-side communication module 611 and the reader / writer 5000 (M) can independently transmit and receive the RFID electromagnetic signal by the microwave M. Become.

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

[X] When a transmission signal (for example, a read command signal) by the microwave M from the antenna 5000A (M) of the reader / writer 5000 (M) is received by the antenna 611A, an electromotive force is generated in the front side communication module 611, and data processing is performed. A response signal (for example, a data signal read from the data storage unit of the front side communication module 611) transmitted from the antenna 611A at the transmission / reception timing controlled by the unit is received by the antenna 5000A (M).

[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] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface to the non-facing side main surface or the eddy current generated on the non-facing side main surface by the transmission signal that goes around the outside of the partition plate 310 is caused by the slit 310S. Be inhibited.
[C] Transverse width W <wavelength λS prevents transmission signals from passing through slit 310S, and a magnetic field necessary for generating electromotive force in the non-face-to-face communication module is difficult to reach.
[D] Due to the difference in antenna communication distance L ′ (S) −L (S) and the offset d (S) between communication modules, the non-face-to-face communication module and the face-to-face communication module differ in receiving / transmitting timing. Therefore, malfunction due to poor response 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 fourth mode shown in FIG.
Based on the above [A], the data reading or writing operation executed by the first reader / writer 1000 (S) to the first data storage unit provided in the IC chip body 311M of the front side communication module 311;
Based on the above [B], a data reading or writing operation executed by the second reader / writer 2000 (S) on the second data storage unit provided in the IC chip body 321M of the back side communication module 321;
-Based on the above [X], the data reading or writing operation executed by the other reader / writer 5000 (M) to the other data storage unit provided in the IC chip body 611M of the front side communication module 611,
Can be processed simultaneously in parallel.

  Of course, in FIG. 83, the number of simultaneous processing operations among [A], [B], and [X], in other words, simultaneous operation of three reader / writers 1000 (S), 2000 (S), and 5000 (M). The number can be arbitrarily set in the range of 2 or 3, and the combination can be freely selected.

  As described above, in the eighth embodiment, three communication modules 311 are used by using one reader / writer 5000 (M) independent of two reader / writers 1000 (S) and 2000 (S). Since data access (reading or writing) can be performed simultaneously on the data storage units 321 and 611, the data capacity can be increased and the data processing can be speeded up.

  At this time, the first and second reader / writers 1000 (S) and 2000 (S) have the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz) with respect to the front-side communication module 311 and the back-side communication module 321. ± 5%), signals having the same output are transmitted, and antenna communication distances L (S) and L ′ (S) between the corresponding communication modules 311 and 321 and the reader / writers 1000 (S) and 2000 (S). May be the same.

  In addition, as shown in FIG. 79, in this embodiment, the short-wave wiring board 311S and the microwave wiring board 611S are laminated and formed. In the short-wave wiring board 311S, the loop antenna 311A is formed. The IC card 800 can be thinned by partially removing the inside to form a recess and embedding the microwave wiring substrate 611S in the removed recess space.

(Ninth Example)
A ninth embodiment of the IC card according to the present invention is shown in FIGS. 84 is an exploded perspective view schematically showing the IC card, FIG. 85 is a partially broken plan view, FIG. 86 is a partially broken bottom view, and FIG. 87 is a sectional view taken along line LXXXVII-LXXXVII in FIG. In the IC card 900 of the ninth embodiment, the type and arrangement position of the communication module are changed with respect to the IC card 700 of the seventh embodiment, and the form of the partition plate is also partially changed.

The IC card 900 shown in FIGS. 84 to 87 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 lamination. 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 810 (partition member) formed into a horizontally long rectangular shape in the form of one flat sheet or film;
(2) A microwave front-side communication module 511 and a back-side communication module 521 that are arranged in a vertical direction so as to face each of the front-side main surface and the back-side main surface of the partition plate 810 and overlap each other in plan view. (First and second communication members);
(3) A short-wave front-side communication module 411 (third communication member) that is disposed so as to face only the front-side main surface of the partition plate 810 and overlaps in a plan view and has a horizontally long rectangular shape;
(4) A microwave back-side communication module 621 (third communication member) disposed in the vertical direction so as to face only the back-side main surface of the partition plate 810 and overlap in a plan view and has a vertically long rectangular shape;
(5) Electrical insulating spaces disposed between the partition plate 810 and the front-side communication modules 511 and 411 and between the partition plate 810 and the back-side communication modules 521 and 621, respectively, and corresponding to their own thickness. A horizontally-long rectangular front-side insulating sheet 12 and back-side insulating sheet 22 (first and second insulating members) that form (gap);
(6) The oblong rectangular front side molding plate 13 and the rear side molding plate 23 which are respectively arranged outside the front side communication modules 511 and 411 and the back side communication modules 521 and 621 and hold the positions of the modules 511, 411, 521 and 621. (First and second molded members).

  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 constituent material of the IC card 900 is substantially the same as described in the first embodiment.

  The partition plate 810 is located substantially at the center in the thickness direction of the IC card 900 and is formed of a flat aluminum foil, and has one circular hole (a through-hole 810H described later) near the center. Yes. The partition plate 810 of the present embodiment is substantially the same as the partition plate 10 of the first embodiment (see FIG. 1).

  Of the four communication modules 511, 521, 311 and 621 in total, the paired communication modules 511 and 521 have a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 900, and each antenna 511A and 521A is a straight line. The planar antenna spreads in a wing shape in the vertical direction, that is, the short side direction of the IC card 900 by folding back after extending in the shape.

  In this embodiment, similarly to the sixth embodiment or the seventh embodiment, both the front side communication module 511 and the back side communication module 521 are for the microwave M1 and have the same specifications. The wiring board 511S and the wiring board 521S are different from each other. A rectangular shape similar to the card outline, and the same outline is arranged in a back-to-back state at substantially the same position in plan view to constitute a pair (one set) of communication modules (FIGS. 85 and 86). reference). The pair of IC chip main bodies 511M and 521M are disposed at substantially the center in the vertical direction of the corresponding planar antennas 511A and 521A. The microwave M1 is set to a frequency range of, for example, 2.45 GHz ± 130 MHz (or 2.45 GHz ± 5%), and the antennas 511A and 521A of the pair of communication modules 511 and 521 and the antenna 1000A of the reader / writer 1000 (M1) ( M1) can be transmitted to and received from (see FIGS. 88 and 89).

  On the other hand, the single front-side communication module 411 has a rectangular shape that is elongated in the lateral direction (left-right direction) of the IC card 900, and the antenna 411A has a rectangular spiral shape over the entire surface of the IC card 900 a plurality of times (four times in the figure). It is a loop-shaped (or coil-shaped) antenna for a short wave that circulates. The IC chip body 411M is arranged at any corner of the antenna 411A having a rectangular loop shape.

  In this embodiment, the front-side communication module 411 has a single frequency range independent of the frequency range of the microwave M1, for example, a short wave set to a frequency range of 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%). For S, transmission / reception is possible between the antenna 411A of the communication module 411 and the antenna 5000A (S) of the reader / writer 5000 (S) (see FIGS. 90 and 92). Note that the front side communication module 411 of this embodiment is substantially the same as the front side communication module 311 of the eighth embodiment (see FIG. 76).

  Furthermore, the single back side communication module 621 has a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 900, and the antenna 621A extends while being bent (curved into an S-shape), whereby the vertical direction, that is, the IC card. It is a planar antenna that spreads in a wing shape in the short side direction of 900.

  In this embodiment, the back side communication module 621 is set to a single frequency range independent of both the frequency range of the microwave M1 and the frequency range of the short wave S, for example, a frequency range of 920 MHz ± 50 MHz (or 920 MHz ± 5%). For the microwave M2, transmission and reception are possible between the antenna 621A of the communication module 621 and the antenna 6000A (M2) of the reader / writer 6000 (M2) (see FIGS. 91 and 92). The IC chip main body 621M is disposed substantially at the center in the vertical direction of the antenna 621A. Note that the back-side communication module 621 of this embodiment is substantially the same as the back-side communication module 121 of the sixth embodiment (see FIG. 60).

  As described above, the IC card 900 of the ninth embodiment is newly provided with a single front-side communication module 411 for the short wave S and a single unit for the microwave M2, in addition to the pair of communication modules 511 and 521 for the microwave M1. One back side communication module 621. Specifically, in FIG. 85, the front-side communication module 511 of the pair of communication modules 511 and 521 for the microwave M1 is placed inside the rectangular loop antenna 411A constituting the single front-side communication module 411 for the short wave S. In FIG. 86, the back side communication module 521 for the microwave M1 and the single back side communication module 621 for the microwave M2 are arranged in parallel.

  As shown in FIG. 88, the reader / writer 1000 (M1) fixedly arranged communicates with the front-side communication module 511 on the front side (left side in the figure) of the IC card 900 that slides along the main surface (up and down in the figure). When doing so, the main surface on the front side (left side) of the partition plate 810 is the facing main surface 810fs, and the main surface on the back side (right side) is the non-facing side main surface 810ns. A front-side communication module 511 positioned between the reader / writer 1000 (M1) and the partition plate 810 is stacked as a facing-side communication module on the facing main surface 810fs of the partition plate 810, and the reader / writer 1000 (M1) and the partition plate The back-side communication module 521 that is not positioned between the first and second 810s overlaps the non-face-to-face main surface 810ns of the partition plate 810 as a non-face-to-face communication module.

  As shown in FIG. 89, the reader / writer 1000 (M1) fixedly arranged communicates with the back side communication module 521 on the back side (right side in the figure) of the IC card 900 that slides along the main surface (vertical direction in the figure). When doing so, the main surface on the back side (right side) of the partition plate 810 becomes the facing main surface 810fs, and the main surface on the front side (left side) becomes the non-facing side main surface 810ns. The back side communication module 521 located between the reader / writer 1000 (M1) and the partition plate 810 is overlapped on the facing main surface 810fs of the partition plate 810 as a face-to-face communication module, and the reader / writer 1000 (M1) and the partition plate are overlapped. A front-side communication module 511 that is not positioned between the front-side communication module 810 and the front-side communication module 511 is superimposed on the non-face-to-face main surface 810ns of the partition plate 810 as a non-face-to-face communication module.

  90, when the IC card 900 slides along the main surface (in the vertical direction in the figure), the front side communication module 411 is fixedly arranged on the front side (left side in the figure) of the IC card 900. The reader / writer 5000 (S) communicates alone (that is, in a form independent of the pair of communication modules 511 and 521).

  As shown in FIG. 91, when the IC card 900 slides along the main surface (vertically in the figure), the back side communication module 621 is fixedly arranged on the back side (right side in the figure) of the IC card 900. The reader / writer 6000 (M2) communicates alone (that is, in a form independent of the pair of communication modules 511 and 521).

  Then, magnetic flux coupling is generated only between the antenna 511A of the facing communication module 511 in FIG. 88 (or the antenna 521A of the facing communication module 521 in FIG. 89) and the antenna 1000A (M1) of the reader / writer 1000 (M1). In order to enable individual transmission / reception of RFID electromagnetic wave signals by the microwave M1, the IC card 900 further includes a structure as described below.

  88 (or FIG. 89), when the IC card 900 is seen through from the overlapping direction, the antenna 511A (or 521A) of the facing communication module 511 (or 521) and the non-facing communication module 521 ( Alternatively, a through-hole 810H as an open region is formed by being removed in a hole shape so as to partially overlap the antenna 521A (or 511A) of 511) (see FIGS. 85 and 86).

  More specifically, the through hole 810H shown in FIG. 88 (or FIG. 89) is a planar antenna 511A (or 521A) of the facing communication module 511 (or 521) projected on the facing main surface 810fs of the partition plate 810. Or a part of the planar antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) projected onto the non-face-side main surface 810ns. One circular hole is formed (see FIGS. 85 and 86). The maximum hole diameter, that is, the diameter D (D ≦ 6 mm in this embodiment) of the through hole 810H is the wavelength λM1 of the microwave M1 that is an electromagnetic wave for RFID emitted from the reader / writer 1000 (M1) (λM1≈ in this embodiment). 12 cm) (D <λM1).

  As shown in FIGS. 85 and 86, when the IC card 900 is seen through from the overlapping direction, the outer peripheral edge of the partition plate 810 is disposed so as to be retracted inward from the outline of the IC card 900. Further, the outer peripheral edges of the front-side communication modules 511 and 411 and the back-side communication modules 521 and 621 are arranged to be retracted inward from the outer peripheral edge of the partition plate 810 (see FIG. 87).

  Similarly, as shown in FIGS. 85 and 86, when the IC card 900 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 modules 511 and 411 and the back-side communication corresponding to the respective outer peripheral edges. It is formed larger than the modules 521 and 621 and is held in a state of closing (or covering) the through hole 810H of the partition plate 810 (see FIG. 87). 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 partition plate 810 (see FIG. 84).

  88 and 89, by providing the through-hole 810H in the partition plate 810, an eddy current is generated on the facing main surface 810fs of the partition plate 810 by the electromagnetic wave signal for RFID from the microwave M1 from the reader / writer 1000 (M1). It is possible to prevent or suppress a phenomenon that occurs and generates a demagnetizing field. Further, the through-hole 810H is generated at the facing main surface 810fs and propagates through the partition plate 810 to reach the non-facing main surface 810ns, or the electromagnetic wave signal for RFID by the microwave M1 from the reader / writer 1000 (M1). Among them, the function of breaking around the outside of the partition plate 810 and dividing the eddy current generated on the non-facing side main surface 810 ns can also inhibit the phenomenon of generating a magnetic field on the non-facing side main surface 810 ns.

  In this way, the through hole 810H complements the attenuation or shielding action of the partition plate 810 against electromagnetic waves. That is, through the through hole 810H, only the facing communication module 511 in FIG. 88 and only the facing communication module 521 in FIG. 89 receive the RFID electromagnetic wave signal from the reader / writer 1000 (M1), and a response signal thereto. Is given to the reader / writer 1000 (M1). Therefore, the through-hole 810H enables individual transmission / reception of the electromagnetic wave signal for RFID by the microwave M1 shown in FIGS. 88 and 89.

  Incidentally, when the IC card 900 is seen through from the overlapping direction in FIG. 87, the front-side communication module 511 and the back-side communication module 521 are inside the horizontally long rectangular card outline and in the long side direction (that is, the horizontal direction, FIG. 87). In the left-right direction) are offset from each other (齟齬). More specifically, the offset amount d (M1) between the two communication modules 511 and 521, in other words, the distance d (the distance d between the connection points of the antennas 511A and 521A of the two communication modules 511 and 521 and the IC chip bodies 511M and 521M). M1), in other words, a separation distance d (M1) is provided in the card long side direction of both IC chip bodies 511M and 521M.

  Therefore, in FIG. 88 (or FIG. 89), the electromagnetic wave signal for RFID by the microwave M1 transmitted from the antenna 1000A (M1) of the reader / writer 1000 (M1) is converted into the facing communication module 511 (or 521) and the facing insulating sheet. 12 (or 22) and trying to pass through the through hole 810H of the partition plate 810, the diameter D is smaller than the wavelength λM1, so that the passage itself is hindered, and the non-face-to-face communication module 521 (or 511) starts. The magnetic field required for power generation is difficult to reach. Even if a part of the electromagnetic wave signal for RFID reaches the antenna 521A (or 511A) of the non-face-to-face communication module 521 (or 511) through the through-hole 810H, antenna communication with the reader / writer 1000 (M1). The non-face-to-face communication module 521 (or 511) and the face-to-face communication module 511 (or 521) are set to receive / send timing by the distance difference L ′ (M1) −L (M1) and the offset amount d (M1) described above. As a result, a malfunction due to poor response is avoided.

  88, the non-face-to-face communication module 521 and the reader / writer 1000 (M1) in FIG. 88, and the non-face-to-face communication module 511 and the reader / writer 1000 (M1) in FIG. Magnetic flux coupling is less likely to occur between them. Therefore, the through-hole 810H enables individual transmission / reception of the electromagnetic wave signal for RFID by the microwave M1 shown in FIGS. 88 and 89.

  Thus, in the ninth embodiment, a microwave through hole 810H (diameter D) is formed in the partition plate 810 (see FIG. 84), and in addition to the pair of microwave communication modules 511 and 521, a single unit is provided. The IC card 900 including the shortwave communication module 411 and the single microwave communication module 621 functions as a combined microwave / shortwave type.

  Here, the ninth embodiment of the individual transmission and 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 is summarized as follows. It becomes like this. In the explanatory diagrams of the individual transmission / reception states (FIGS. 88 to 92), 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 511 and Reader / Writer 1000 (M1) <FIG. 88>
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 Magnetic flux coupling is generated only between 511 and the reader / writer 1000 (M1), and the RFID electromagnetic wave signal can be individually transmitted and received by the microwave M1.
[A] When a transmission signal (for example, a read command signal) by the microwave M1 from the antenna 1000A (M1) of the reader / writer 1000 (M1) is received by the antenna 511A, an electromotive force is generated in the front side communication module 511, and data processing is performed. The antenna 1000A (M1) receives a response signal (for example, a data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the unit.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surface 810fs of the partition plate 810 is blocked or suppressed by the through hole 810H.
[B] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 810fs to the non-facing main surface 810ns or the eddy current generated on the non-facing main surface 810ns by the transmission signal that circulates outside the partition plate 810 is It is inhibited by the through hole 810H.
[C] The diameter D <wavelength λM1 prevents the transmission signal from passing through the through hole 810H, and a magnetic field necessary for generating an electromotive force in the non-facing communication module, that is, the back communication module 521, is difficult to reach.
[D] The communication between the non-face-to-face communication module (here, the back-side communication module 521) and the face-to-face communication due to the difference L ′ (M1) −L (M1) in the antenna communication distance and the offset amount d (M1) between the communication modules. The module (here, the front-side communication module 511) has a difference in transmission / reception timing, so that malfunction due to poor response is avoided.

(Second Aspect) Individual Transmission / Reception Between Backside Communication Module 521 and Reader / Writer 1000 (M1) <FIG. 89>
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 521 and the reader / writer 1000 (M1), and the RFID electromagnetic wave signal can be individually transmitted and received by the microwave M1.
[B] When a transmission signal (for example, a read command signal) by the microwave M1 from the antenna 1000A (M1) of the reader / writer 1000 (M1) is received by the antenna 521A, an electromotive force is generated in the back side communication module 521, and data processing is performed. The antenna 1000A (M1) receives a response signal (for example, a data signal read from the data storage unit of the back side communication module 521) transmitted from the antenna 521A at the transmission / reception timing controlled by the unit.

[A] Phenomenon of generation of eddy current and demagnetizing field due to the transmission signal reaching the facing main surface 810fs of the partition plate 810 is blocked or suppressed by the through hole 810H.
[B] The magnetic field generation phenomenon based on the eddy current propagating from the facing main surface 810fs to the non-facing main surface 810ns or the eddy current generated on the non-facing main surface 810ns by the transmission signal that circulates outside the partition plate 810 is It is inhibited by the through hole 810H.
[C] The diameter D <wavelength λM1 prevents the transmission signal from passing through the through-hole 810H, and a magnetic field necessary for generating an electromotive force in the non-face-to-face communication module, that is, the front-side communication module 511 is difficult to reach.
[D] The non-face-to-face communication module (here, the face-side communication module 511) and face-to-face communication due to the difference in antenna communication distance L ′ (M1) −L (M1) and the presence of the offset amount d (M1) between the communication modules. Since the module (here, the back side communication module 521) has a difference in the transmission / reception timing, malfunction due to poor response is avoided.

(Third Aspect) Independent Transmission / Reception Between Front-side Communication Module 411 and Reader / Writer 5000 (S) <FIG. 90>
Opposite to the front-side communication module 411, a loop antenna 5000A (S) capable of communication in a frequency range of a short wave S different from the microwave M1 (for example, 13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) is provided. This is a case where the reader / writer 5000 (S) is arranged separately from the reader / writer 1000 (M1).
In this case, the magnetic coupling described in [X] below is established by the independent short wave S, so that the front-side communication module 411 and the reader / writer 5000 (S) can independently transmit and receive the RFID electromagnetic wave signal by the short wave S. become.

[X] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 5000A (S) of the reader / writer 5000 (S) is received by the antenna 411A, an electromotive force is generated in the front side communication module 411, and the data processing unit A response signal (for example, a data signal read from the data storage unit of the front side communication module 411) transmitted from the antenna 411A at the transmission / reception timing controlled by is received by the antenna 5000A (S).

(Fourth Mode) Independent Transmission / Reception Between Backside Communication Module 621 and Reader / Writer 6000 (M2) <FIG. 91>
A reader having a planar antenna 6000A (M2) facing the back-side communication module 621 and capable of communicating in a frequency range (for example, 920 MHz ± 50 MHz or 920 MHz ± 5%) of the microwave M2 different from both the microwave M1 and the short wave S In this case, the writer 6000 (M2) is arranged separately from the reader / writers 1000 (M1) and 5000 (S).
In this case, the magnetic coupling described in [Y] below is established by the independent microwave M2, so that the back side communication module 621 and the reader / writer 6000 (M2) independently transmit and receive the RFID electromagnetic wave signal by the microwave M2. Is possible.

[Y] When a transmission signal (for example, a read command signal) by the microwave M2 from the antenna 6000A (M2) of the reader / writer 6000 (M2) is received by the antenna 621A, an electromotive force is generated in the back side communication module 621, and data processing is performed. A response signal (for example, a data signal read from the data storage unit of the back side communication module 621) transmitted from the antenna 621A at the transmission / reception timing controlled by the unit is received by the antenna 6000A (M2).

(Fifth aspect) Simultaneous individual transmission / reception between the front side communication module 511 and the first reader / writer 1000 (M1) and between the back side communication module 521 and the second reader / writer 2000 (M1), and Independent transmission / reception between the front side communication module 411 and the reader / writer 5000 (S) and between the back side communication module 621 and the reader / writer 6000 (M2) <FIG. 92>
This is the case shown below. That is, the second antenna having a planar antenna 2000A (M1) that can communicate in the same frequency range (2.45 GHz ± 130 MHz or 2.45 GHz ± 5%) as the antenna 1000A (M1) is opposed to the rear communication module 521. The reader / writer 2000 (M1) is arranged separately from the first reader / writer 1000 (M1). On the other hand, facing the front-side communication module 411, a loop antenna 5000A (S) capable of communicating in a frequency range of a short wave S different from the microwave M1 (for example, 13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%). Another reader / writer 5000 (S) having the above is arranged. In addition, a planar antenna 6000A (M2) that can communicate in the frequency range (for example, 920 MHz ± 50 MHz or 920 MHz ± 5%) of the microwave M2 different from both the microwave M1 and the short wave S is opposed to the back side communication module 621. Still another reader / writer 6000 (M2) is arranged.

  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. As a result, magnetic flux coupling is generated only between the front side communication module 511 and the first reader / writer 1000 (M1) and between the back side communication module 521 and the second reader / writer 2000 (M1). Simultaneous and individual transmission / reception of RFID electromagnetic wave signals becomes possible. On the other hand, when the magnetic coupling described in [X] below is established by the independent short wave S, magnetic flux coupling is generated only between the front-side communication module 411 and the reader / writer 5000 (S), and the electromagnetic wave signal for RFID by the short wave S is generated. Independent transmission / reception becomes possible. Furthermore, when the magnetic flux coupling described in [Y] below is established by the independent microwave M2, magnetic flux coupling is generated only between the back-side communication module 621 and the reader / writer 6000 (M2). Independent transmission and reception of electromagnetic wave signals becomes possible.

[A] When a transmission signal (for example, a read command signal) by the microwave M1 from the antenna 1000A (M1) of the first reader / writer 1000 (M1) is received by the antenna 511A, an electromotive force is generated in the front side communication module 511. The response signal (for example, the data signal read from the data storage unit of the front side communication module 511) transmitted from the antenna 511A at the transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M1).
[B] When a transmission signal (for example, a read command signal) by the microwave M1 from the antenna 2000A (M1) of the second reader / writer 2000 (M1) is received by the antenna 521A, an electromotive force is generated in the back side communication module 521. The response signal (for example, the data signal read from the data storage unit of the back side communication module 521) transmitted from the antenna 521A at the transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M1).

[X] When a transmission signal (for example, a read command signal) by the short wave S from the antenna 5000A (S) of the reader / writer 5000 (S) is received by the antenna 411A, an electromotive force is generated in the front side communication module 411, and the data processing unit A response signal (for example, a data signal read from the data storage unit of the front side communication module 411) transmitted from the antenna 411A at the transmission / reception timing controlled by is received by the antenna 5000A (S).
[Y] When a transmission signal (for example, a read command signal) by the microwave M2 from the antenna 6000A (M2) of the reader / writer 6000 (M2) is received by the antenna 621A, an electromotive force is generated in the back side communication module 621, and data processing is performed. A response signal (for example, a data signal read from the data storage unit of the back side communication module 621) transmitted from the antenna 621A at the transmission / reception timing controlled by the unit is received by the antenna 6000A (M2).

[A] Phenomenon of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface of the partition plate 810 is blocked or suppressed by the through-hole 810H.
[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 810 is a through hole 810H. Is inhibited by.
[C] The diameter D <wavelength λM1 prevents the transmission signal from passing through the through-hole 810H, and the magnetic field necessary for generating an electromotive force in the non-face-to-face communication module is difficult to reach.
[D] The difference in the antenna communication distance L ′ (M1) −L (M1) and the offset amount d (M1) between the communication modules cause the non-facing communication module and the facing communication module to differ in receiving / transmitting timing. Therefore, malfunction due to poor response is avoided.

Therefore, in the fifth aspect shown in FIG.
Based on the above [A], a data reading or writing operation executed by the first reader / writer 1000 (M1) with respect to the first data storage unit provided in the IC chip body 511M of the front side communication module 511,
Based on the above [B], a data reading or writing operation executed by the second reader / writer 2000 (M1) with respect to the second data storage unit provided in the IC chip body 521M of the back side communication module 521;
Based on the above [X], a data read or write operation executed by another reader / writer 5000 (S) to another data storage unit provided in the IC chip body 411M of the front side communication module 411,
-Based on the above [Y], a data reading or writing operation executed by another reader / writer 6000 (M2) on yet another data storage unit provided in the IC chip body 621M of the back side communication module 621;
Can be processed simultaneously in parallel.

  Of course, in FIG. 92, the number of simultaneous processing operations among [A], [B], [X], and [Y], in other words, four reader / writers 1000 (M1), 2000 (M1), 5000 (S), Of 6000 (M2), the number of simultaneously operating units can be arbitrarily set in the range of 2 to 4, and the combination can be freely selected.

  Thus, in the ninth embodiment, four reader / writers 5000 (S) and 6000 (M2), which are independent from two reader / writers 1000 (M1) and 2000 (M1), are used. Since data access (reading or writing) can be performed simultaneously on the data storage units of the communication modules 511, 521, 411, and 621, the data capacity can be increased and the data processing can be speeded up.

  At this time, the first and second reader / writers 1000 (M1) and 2000 (M1) have the same frequency range (2.45 GHz ± 130 MHz or 2.45 GHz ± 5) with respect to the front side communication module 511 and the back side communication module 521. %), And the antenna communication distances L (M1) and L ′ (M1) between the corresponding communication modules 511 and 521 and the reader / writers 1000 (M1) and 2000 (M1) are the same. It's okay.

  As shown in FIG. 87, in this embodiment, the short-wave wiring substrate 411S and the microwave wiring substrate 511S are laminated and formed. In the short-wave wiring substrate 411S, the loop antenna 411A is formed. The IC card 900 can be thinned by partially removing the inside to form a recess and embedding the microwave wiring substrate 511S in the removed recess space.

  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 in accordance with the international standard frequency defined in the ISO / IEC standard, JIS standard, etc., but the present invention is intended to amend ISO / IEC standard, 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 ninth embodiment), parts having common functions are denoted by the same reference numerals, and detailed description thereof is omitted. In addition, these embodiments and modifications can be implemented in combination with each other or with conventional technology as long as they do not cause technical contradiction or violate legal or moral norms.

  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. 14). The non-contact type IC card 100, 200,..., 900 of the present invention may be provided with a magnetic contact type IC module according to a conventional contact type 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)
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)
100 IC card for microwave (Non-contact short-range wireless communication card)
110 Partition plate (partition member)
110 fs facing side main surface 110 ns non-facing side main surface 110C peripheral surface portion 110F collar portion 110H1 first through-hole for microwave (open region)
110H2 Microwave second through hole (open area)
121 Backside communication module for microwave (second communication member)
123 Rectangular frame (frame member)
123W Perimeter wall 200 Microwave IC card (Non-contact short-range wireless communication card)
223 Back side molding plate (second molding member)
223W Perimeter wall 300 Microwave IC card (Non-contact near field communication card)
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)
400 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)
500 IC card for shortwave (Non-contact short-range wireless communication card)
510 Partition plate (partition member)
510H1 1st microwave through hole (open area)
510H2 Second microwave through hole (open area)
511 Front-side communication module for second microwave (first communication member)
521 Second microwave backside communication module (second communication member)
600 1st and 2nd microwave IC card (Non-contact short-range wireless communication card)
610 Partition plate (partition member)
610L Left partition plate (partition member)
610R Right partition plate (partition member)
610H Microwave through hole (open area)
610S Shortwave slit (open area)
700 Microwave / Short Wave IC Card (Non-contact Short Range Wireless Communication Card)
611 Front-side communication module for microwave (third communication member)
800 Microwave / shortwave hybrid IC card (Non-contact short-range wireless communication card)
411 Front-side communication module for shortwave (third communication member)
621 Microwave backside communication module (third communication member)
810 Partition plate (partition member)
810H Microwave through hole (open area)
900 Microwave / shortwave hybrid IC card (Non-contact near field communication card)
1000, 2000, 3000, 4000, 5000, 6000 Reader / writer 1000A, 2000A, 3000A, 4000A, 5000A, 6000A 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 (both ICs) Chip body separation distance)
D, D1, D2 Maximum hole diameter of microwave through hole W Maximum antenna transverse width 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 notch CS Center of width of slit for short wave LC Bias (shift amount) of slit for short wave or notch for short wave

Claims (26)

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. And first and second insulating members formed in the shape of a film or film,
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.   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 The non-contact near field communication card according to claim 1, which has a function of transmitting a response signal to a reader / writer.   The non-contact near field communication card according to claim 2, wherein the partition member is made of a nonmagnetic material.   The antenna communication distance between the facing communication member and the reader / writer and the antenna 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 RFID electromagnetic wave emitted from the reader / writer. The contactless near field communication card according to claim 3. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open area includes a part of the antenna of the facing communication member projected onto the facing main surface and a part of the antenna of the non-facing communication member projected onto the non-facing main surface at the same time. The contactless near field communication card according to any one of claims 1 to 4, wherein the card is formed as a through-hole. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open area includes a pair of antennas of the facing communication member projected onto the facing main surface and a part of the antenna of the non-facing communication member projected onto the non-facing main surface. The contactless near field communication card according to any one of claims 1 to 4, wherein the card is formed as a through-hole.   The partition member and the first and second communication members are arranged with their outer peripheral edges retracted from the card outer shape when seen through from the overlapping direction. A contactless near field communication card according to claim 1.   A peripheral wall portion formed in a frame shape is provided along each rectangular side that forms the outer shape of the card, and the partition member, the first and second insulating members, and the first and second members are provided in an internal space of the peripheral wall portion. The contactless near field communication card according to claim 7, wherein the second communication member is accommodated. The peripheral edge of the partition member is bent in the thickness direction to form a peripheral surface portion that surrounds the inner surface of the peripheral wall portion, and then configures a flange portion that is bent toward the radially outer side and is seated on the peripheral wall portion,
The peripheral surface portion and the flange portion of the partition member prevent or suppress the electromagnetic wave signal for RFID transmitted from the reader / writer from flowing around the peripheral wall portion and causing magnetic flux coupling with the non-face-to-face communication member. A contactless short-range wireless communication card.   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 area of the partition member is formed. The contactless near field communication card according to claim 1, wherein the card is held in a closed state. 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. And first and second insulating members formed in the shape of a film or film,
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 a reader / writer and enabling individual transmission and reception of RFID electromagnetic wave signals Wireless communication card. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open region simultaneously includes a part of the planar antenna of the facing communication member projected on the facing main surface and a part of the planar antenna of the non-facing communication member projected on the non-facing main surface. The contactless near field communication card according to claim 11, wherein the card is formed as a single through hole. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open area includes 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. The contactless near field communication card according to claim 11, wherein the card is formed as a pair of through holes included separately.   14. The non-contact near field communication according to claim 11, wherein the maximum value of the hole diameter is set to be smaller than the wavelength of the electromagnetic wave for RFID emitted from the reader / writer in the open region. card.   When viewed through from the overlapping direction, the outer peripheral edge of the partition member is retracted and arranged inside the card outer shape, and the outer peripheral edges of the facing communication member and the non-facing communication member are the outer peripheral edges of the partition member, respectively. The contactless near field communication card according to any one of claims 11 to 14, wherein the card is retracted further inside. 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. And first and second insulating members formed in the shape of a film or film,
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. An area 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. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open region simultaneously 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. The contactless near field communication card according to claim 16, which is formed as a single slit traversing at two locations.   The single slit crosses the two long sides of the card outline at unequal positions deviated from the center in the major axis direction of the respective loop antennas in the first and second communication members. The contactless near field communication card according to claim 17 formed. When seen through from the overlapping direction, the first and second communication members are arranged offset from each other inside the rectangular card outline,
The open region 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. The contactless short-range wireless communication card according to claim 18, wherein the card is formed as a pair of notches traversing at two other points.   The pair of notches intersects the two long sides of the card outline separately at unequal positions deviated from the center in the long axis direction of the loop antennas of the first and second communication members. The non-contact type short-distance wireless communication card according to claim 19, formed in   21. The non-contact near field communication according to claim 17, wherein the maximum value of the transverse width is set to be smaller than the wavelength of the RFID electromagnetic wave emitted from the reader / writer in the open area. Card.   The IC chip bodies of the first and second communication members each include a data storage unit that stores at least one of two-dimensional or three-dimensional image data, audio data, and number code data for personal authentication, The contactless near field communication card according to any one of claims 1 to 21, wherein the personal authentication data is read from the data storage unit by a reader / writer or written into the data storage unit. The contactless near field communication card according to any one of claims 1 to 22,
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,
A contactless short-distance wireless communication card, wherein each pair can be individually transmitted and received between the first and second communication members and a reader / writer in different frequency bands or frequency ranges. 24. The contactless near field communication card according to any one of claims 1 to 23;
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. 24. The contactless near field communication card according to any one of claims 1 to 23, wherein:
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 contactless near field communication card, wherein the third communication member can communicate with a reader / writer in a single independent frequency band or frequency range. The contactless near field communication card according to claim 25;
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,
A data parallel processing system characterized in that data read or write operations executed by a corresponding reader / writer can be processed in parallel with respect to a data storage unit provided in each chip body.

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