JP2019114221A - Card for non-contact short-range radio communication and data parallel processing system using the same - Google Patents

Abstract

To provide a card for non-contact short-range radio communication that can exert a stable magnetic flux blocking effect on a pair of communication members and reduce a signal output adjustment burden and a data parallel processing system using the card.SOLUTION: A pair of communication modules 11 and 21 including planar antennas 11A and 21A respectively and partition plate 10 having a circular through-hole 10H are provided, and thereby generation of eddy current on a facing side main surface of the partition plate 10 and propagation and generation of eddy current on a non-facing side main surface are blocked or suppressed. For example, an IC card 100 compatible with an electromagnetic wave signal for RFID in a microwave band can be obtained easily and inexpensively.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a card including at least a pair of communication members and used for noncontact short distance wireless communication. The present invention also relates to a data parallel processing system using the card.

The individual recognition card (ID card) on which the IC chip is mounted is standardized in “ID-1 size” having external dimensions of 85.60 mm × 53.98 mm × 0.76 mm in ISO / IEC 7810 (But thicker sizes are also commonly used). In recent years, especially among 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 widespread use of contactless near-field wireless communication cards, which have been put to practical use, etc., is remarkable.

These are, for example, (1) entry and exit at a ticket gate by non-contact communication (typically, RFID: Radio Frequency Identifier system etc.) using electromagnetic waves instead of contact points.
(2) Cashless payment (payment);
(3) Issue of passport and inquiry of travel history;
(4) Issue of license and inquiry of operation and accident history;
(5) Public personal identification (identification) and electronic certification;
The procedure is simplified and labor-saving in various situations such as In addition, although the IC chip mounted ID card as described above is commonly referred to as “IC card” in Japan and “smart card” in Europe and the United States, in the following description, a non-contact short distance wireless communication card is It may be abbreviated as "contact IC card" or the like.

  Patent Document 1 discloses a pair of (two) IC modules including an antenna for receiving an electromagnetic wave from a reader / writer (external) and an IC chip having an information processing function, and a fixed gap from each antenna. A single noncontact IC card is disclosed, which is provided with a (insulating space) and disposed between both IC modules, and a ferrite (ferromagnetic) shielding sheet for shielding electromagnetic waves from the reader / writer. There is.

  On the other hand, in Patent Document 2, a shield body is formed by facing a magnetic material layer made of ferrite (ferromagnetic material) from both sides with a metal layer made of aluminum, copper or the like (nonmagnetic material) located at the center between them. Further, a noncontact 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-magnetically permeable layer made of ferrite (ferromagnetic material) is faced from both sides with a metal layer made of an electromagnetic wave shielding material (nonmagnetic material) such as aluminum or copper positioned at the center, A pair of (two) IC modules are provided on the outer side of each non-magnetic-permeable layer via an insulating layer made of plastic film (insulator), and a single non-contact IC card is formed.

  Common to the shielding sheet of Patent Document 1, the magnetic layer of Patent Document 2 and the non-magnetically permeable layer of Patent Document 3, Fe (ferrite, ferritic stainless steel), Ni are used for these shielding plates. Co is a ferromagnetic material having a large relative permeability like a sheet containing ferrite, Co, and ferrite, and is excellent in the shielding function of electromagnetic waves due to the property of absorbing magnetic lines of force. Therefore, even if a pair of (two) IC modules are arranged 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 ferrite which is a ferromagnetic material It is absorbed by a shield plate such as a sheet, and it becomes difficult to reach an IC module (antenna) on the non-reader / writer side (rear side). Therefore, the electromagnetic wave signal from the reader / writer is received only by the near side IC module (antenna), and the pair of IC modules are distinguished and operated (here, the near side IC module operates and the back side IC module does not operate) Means to be able to

  In this way, if it is possible to distinguish (identify) a pair of IC modules and individually transmit and receive (ie read or write data), the amount of data that can be stored in the IC chip will increase (double), so the number of data that can be stored As a matter of course, the accuracy and safety of individual recognition can be dramatically improved by, for example, increasing the number of digits and types of individual identification numbers or adding authentication in image data.

  However, 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 ferromagnetic shielding plate such as a ferrite containing sheet A phenomenon may occur in which a part of the RFID electromagnetic wave signal reaches the IC module (antenna) on the back side.

  Therefore, regardless of the material of the shielding plate (for example, nonmagnetic material or ferromagnetic material), magnetic flux coupling occurs only with the near side IC module and does not occur with the far side IC module As such, it is necessary to carefully adjust the output of the reader / writer according to the characteristics of the frequency (ie, the wavelength) and each time the specification is changed.

  In particular, when the shielding plate is formed of a ferromagnetic material such as a ferrite-containing sheet, the shielding plate is strongly magnetized by the external magnetic field, and remains magnetized by the residual magnetism even if the external magnetic field disappears (hysteresis phenomenon Because of generation, the output adjustment of the electromagnetic wave may adversely affect the information processing function (for example, data writing / reading function, storage function) of the adjacent IC modules. Specifically, the shielding plate has strong magnetism, so that a pair of IC modules may generate a malfunction based on poor response (simultaneous response to data read / write signal or no response to both signals), or the shielding plate There is also a possibility that the stored data of the IC chip may be erased (data destruction) by making it permanent magnetized.

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

  An object of the present invention is to generally use a nonmagnetic material (for example, a paramagnetic material or a diamagnetic material) which is considered to be inferior to a ferromagnetic material in a shielding effect (that is, magnetic line absorption action) between a pair of communication members. A contactless near-field wireless communication card capable of exerting a stable magnetic flux blocking effect on a pair of communication members and reducing the load of signal output adjustment, and the card It is in providing the data parallel processing system used.

Means for Solving the Problems and Effects of the Invention

In order to solve the above-mentioned subject, the card for noncontact type near field communication concerning the present invention is
A single card used for contactless near field communication,
A partition member (desirably a paramagnetic material such as aluminum foil, aluminum plate, etc.) which has conductivity and has an attenuation or shielding (or reflection) action to electromagnetic waves and is formed into a sheet or film shape (for example, flat) ,
It includes an IC chip main 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 overlap each other in plan view facing one main surface and the other main surface of the partition member. The non-contact short distance wireless communication to the reader / writer is individually performed by the antenna receiving an RFID electromagnetic wave signal in a predetermined frequency range from the reader / writer and transmitting a response signal to it to the reader / writer. First and second communication members (eg, communication modules) for performing
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members (for example, silicone paper) formed in a shape of a film or a film,
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member When the non-facing side communication member which is not located on the non-facing side main surface is overlapped on the non-facing side main surface and these are seen through from the overlapping direction, the partition member And an open area (eg, a notch, a slit or a hole) which has been removed so as to partially overlap with each other,
In the communication state with the reader / writer, the open area causes magnetic flux coupling only between the facing communication member and the reader / writer to enable individual transmission / reception of the RFID electromagnetic wave signal.

  In this manner, a partition member is disposed between the pair of communication members, and the partition member is provided with an open area which is partially removed so as to partially overlap with the antenna of the pair of communication members. Thus, the RFID electromagnetic wave from the reader / writer can be obtained regardless of the material of the partition member (for example, whether it is a nonmagnetic material or a ferromagnetic material) without strictly adjusting the signal output of the reader / writer. The signal can be magnetically coupled only to the antenna of the facing communication member, and can be easily prevented from being magnetically coupled to the antenna of the non-facing communication member (that is, individual transmission and reception of the RFID electromagnetic wave signal). Therefore, it is possible to more reliably prevent the occurrence of an erroneous operation based on the response failure of the non-contact short-distance wireless communication card (that is, the writing / reading mistake of data by the reader / writer). Such a card may have a plurality of pairs of communication members (a plurality of pairs).

  In short, the open area prevents or suppresses the generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the partition on the facing main surface A magnetic field is generated on the non-facing surface by the eddy current that propagates through the member to the non-facing surface and the eddy current generated on the non-facing surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partition member. Of the partition member against electromagnetic waves, and only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and directs the response signal to it to the reader / writer. Give the function to

  As described above, the first and second communication members are disposed so as to face the main surfaces on both sides with the partition member interposed therebetween, and the antenna of the facing communication member receives the signal from the reader / writer on the front side of the partition member A noncontact near field wireless communication (communication magnetic field) is established by generating an electromotive force and transmitting a response signal from the antenna to the reader / writer.

  On the other hand, since the partition member is usually made of metal (including metal plating, metal-containing resin and the like) having excellent conductivity regardless of nonmagnetic material or ferromagnetic material, the metal for the electromagnetic wave signal for RFID from the reader / writer An eddy current is generated on the facing main surface of the partition member to easily generate a demagnetizing field. The 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 area which is removed through so as to partially overlap with the antenna of the pair of communication members, generation of eddy current on the opposing main surface of the partition member is prevented or Since the magnetic field is suppressed, it is difficult to generate a demagnetizing field (or the demagnetizing field is weakened), and the communication magnetic field between the facing communication member and the reader / writer is well maintained.

  Further, when the signal output of the reader / writer is large, regardless of whether the partition member is a nonmagnetic material or a ferromagnetic material, an eddy current generated on the facing main surface propagates through the partition member and is not facing A phenomenon leading to the side main surface or a phenomenon in which an eddy current is generated on the non-facing side main surface around the outside of the partition member in the RFID electromagnetic wave signal from the reader / writer may occur. However, in the present invention, by providing the partition member with an open area which is removed through so as to partially overlap with the antenna of the pair of communication members, propagation of these eddy currents on the non-facing main surface of the partition member The occurrence of haze is blocked or suppressed as in the facing main surface to inhibit the phenomenon of producing a magnetic field.

  In this manner, the electromagnetic wave signal for RFID from the reader / writer causes magnetic flux coupling only with the antenna of the facing communication member, and does not cause magnetic flux coupling with the antenna of the non-facing communication member. A function that complements the damping or shielding action of the partition member against the electromagnetic wave, and only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and transmits a response signal to it to the reader / writer (in other words, , And an individual transmission / reception function of an electromagnetic wave signal for RFID.

  At that time, it is desirable that the partition member be made of a nonmagnetic material. By this, while the relative permeability is large and the magnetic flux absorption effect is excellent and the magnetic flux shielding effect is large, the ferromagnetic material which is strongly magnetized (strongly magnetized) by an external magnetic field and may become permanent magnet is not used as a partition member. It is That is, since the nonmagnetic partition member becomes non-magnetic (not magnetized) when the relative permeability is close to 1 and the external magnetic field disappears, the paired communication members respond poorly (to the data read / write signal There is no risk of causing a malfunction based on simultaneous response or no response, or deletion (destruction) of stored data of each communication member. And, even in the case where a nonmagnetic material which is considered to be inferior to the ferromagnetic material in shielding effect (that is, magnetic line absorption action) in simple comparison is used for the partitioning member, the above-mentioned open area is formed on the partitioning member As a result, while exerting a stable magnetic flux blocking effect on the paired communication members, the burden of signal output adjustment and the like is greatly reduced.

  Examples of the nonmagnetic material include paramagnetic materials (Al, Sn, Pt, Pd, etc.) whose relative magnetic permeability is greater than 1 and diamagnetic materials (Au, Ag, Cu, Pb, etc.) whose relative magnetic permeability is less than 1 And austenitic stainless steel is also nonmagnetic. Among these, desirably, an aluminum material such as an aluminum foil or an aluminum plate is recommended from the viewpoint of processability at the time of thinning of the partition member and formation of an open area (drilling process and the like) and cost.

  Further, the antenna communication distance L between the facing side communication member and the reader / writer, and the antenna communication distance L 'between the non-facing side communication member and the reader / writer are all of the RFID electromagnetic wave emitted from the reader / writer. It is desirable to set the wavelength 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 the ISO / IEC 18000, etc., from the LF (medium frequency) band (30 kHz to 300 kHz) to the UHF (ultrahigh frequency) band (300 MHz to 3 GHz). In terms of the RFID signal transmission method that has already been put to practical use, the electromagnetic induction method using a loop antenna in the HF (short wave) band (3 MHz to 30 MHz) with relatively weak directivity and lateral spread is relatively weak. In the UHF band (also referred to as a microwave band) where the directivity and rectilinearity are strong, the radio wave system using a planar antenna is roughly classified. For example, in Japan, 13.56 MHz (wavelength λ ≒ 22 m) in the HF band and 920 MHz (wavelength λ ≒ 33 cm) or 2.45 GHz (wavelength λ ≒ 12 cm) in the microwave band are often employed. At this time, the antenna communication distances L and L 'of the "proximity contactless communication card" in ISO / IEC 14443 are specified to be 10 cm or less (0 <L.ltoreq.10 cm, 0 <L'.ltoreq.10 cm).

  Here, even if any of the above frequency bands is used, the antenna communication distances L and L ′ are set to be equal to or less than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ). Because changes in electric and magnetic fields up to one wavelength (unit wave) are directly transmitted as signals between the antenna of the reader / writer and the antenna of the communication member, the difference in frequency (wavelength) and signal transmission method Common handling is 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). And more preferably 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 antenna of the reader / writer can be reduced, and the entire reading and writing system can be miniaturized.

  In the present invention, the term "frequency range" is a concept narrower than the above-mentioned "frequency band", and the reader / writer may consider the frequency of the received signal as the same frequency as the transmitted signal when making a pass / fail determination. Means frequency range. The “frequency range” can be defined, for example, as a standard frequency (or specified frequency) ± 10%, a standard frequency (or specified frequency) ± ○○ Hz. As will be described later, when designing a card carrying a plurality of communication members (a plurality of sets), or a pair of data (one set) of a card carrying a pair (a set) or a plurality of pairs (a plurality of sets) of communication members “Frequency band” and “frequency range” become important as design criteria, for example, when designing a system in which parallel processing is performed with a plurality of reader / writers (pairs).

When viewed in the overlapping direction, the first and second communication members are arranged offset with each other on the inside (that is, the direction of the short side or the long side) of the card outline of the rectangular shape,
The open area is a single area simultaneously including 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. It may be formed through.

  In this manner, by arranging the first and second communication members in an offset manner, the positions of both antennas (in other words, the connection positions with the corresponding IC chip body) do not completely overlap, and the vertical and horizontal directions do not overlap. It is slightly off at least one side. Therefore, the RFID electromagnetic wave signal transmitted from (the antenna of) the reader / writer passes through the facing communication member (and the facing insulating member), passes through the open area of the partition member, and reaches the non-facing communication member (of the antenna). Even in the case where there is a shift based on the offset arrangement in addition to the difference in the antenna communication distance with the reader / writer at the transmission / reception timing between the non-facing side communication member and the facing side communication member, the non-facing side communication member It is difficult for magnetic flux coupling to occur between the reader and the reader / writer.

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

When viewed in the overlapping direction, the first and second communication members are arranged offset with each other on the inside (that is, the direction of the short side or the long side) of the card outline of the rectangular shape,
The open area is a pair of areas including, separately, 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.

  Also in the transmission and reception timings of the non-face-to-face communication member and the face-to-face communication member in this case, a deviation based on the offset arrangement occurs in addition to the difference in the antenna communication distance with the reader / writer. Magnetic flux coupling with the reader / writer is unlikely to occur. And in this case, since the open area is formed as a pair of areas including a part of both antennas separately from each other, the best open area adapted to each of the pair of communication members can be formed in the partition member . Note that the open area is a pair by punching out the partition member with a pair of holes such as a circle, an ellipse, and a polygon, or by cutting out a pair of opposed short sides or a pair of opposed long sides in the partition member. Is formed in the partition member as a region of

  It is preferable that the outer peripheral edge of the partition member and the first and second communication members be disposed so that the outer peripheral edge thereof is retracted to the inside from the card outer shape when viewed in the overlapping direction.

  Thus, by retracting the outer peripheral edge of the partition member and both communication members inside the card outer shape, the RFID electromagnetic wave signal from the reader / writer reaching the non-facing side main surface is attenuated around the outside of the partition member. Or it can be shielded.

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

  In this manner, a partition member, both insulating members, and both communication members are stacked in layers inside the peripheral wall portion, and for example, molding members are respectively covered from above and below to press the peripheral wall portion, thereby facilitating cards of a certain thickness. It can be molded. At this time, since it is not necessary to apply a pressing force to the communication member, damage to the communication member (particularly, the antenna) can be prevented. In addition, when providing the frame-like peripheral wall portion, the forming member is made of, for example, a resin plate made of acrylic (methacrylic; PMMA), the peripheral wall portion is integrally molded with either upper or lower resin plate, or upper and lower resin plates It may be integrally molded, and is suitable for mass production with uniform specifications.

Furthermore, 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, and then bent outward in the radial direction to form a collar portion seated on the peripheral wall portion
The peripheral surface portion and the ridge portion of the partition member prevent or suppress that the RFID electromagnetic wave signal transmitted from the reader / writer wraps around the peripheral wall portion to cause magnetic flux coupling with the non-facing side communication member.

  As described above, by forming the peripheral surface portion and the ridge 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, It is possible to prevent the generation of an eddy current on the facing main surface.

  When viewed in the overlapping direction, the first and second insulating members are formed such that their respective outer peripheral edges are larger than the corresponding first and second communication members, and block the open area of the partition member ( Or is held in the state).

  As described above, the first and second insulating members (for example, silicone paper) close the open regions of the partition members, respectively, so that the partition members and the respective communication members can be reliably separated to enhance the insulation effect. Further, since the open area of the partition member is closed by the insulating member from both sides, an adhesive or the like for fixing the position of the first and second communication members to the corresponding molded member (or insulating member) at the time of assembly It is possible to prevent fluidization and penetration into the open area at the time of heat fusion of the members. 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 infiltrating into the interior through the insulating member and preventing the peripheral portions of both molded members from heat fusion, the outer peripheral edges of both insulating members have the card outer shape. It is desirable to be retracted and disposed more inside.

Further, in order to solve the above problems, the noncontact near-field wireless communication card according to the present invention, when adapted to an RFID electromagnetic wave signal of a specific frequency band (for example, a microwave band),
A single card used for contactless near field communication,
A partition member (for example, an aluminum foil, an aluminum plate, etc.) which is made of a nonmagnetic material having conductivity and attenuating or shielding (or reflecting) action against electromagnetic waves and formed into (for example, flat) sheet or film Paramagnetic material),
It includes an IC chip main body having a data storage function and a communication control function and a planar antenna having a signal transmission / reception function so as to overlap with one main surface and the other main surface of the partition member in plan view. The reader / writer is disposed, and the planar antenna receives an RFID electromagnetic wave signal in a predetermined frequency range (for example, in the microwave band) from the reader / writer and transmits a response signal to the reader / writer to the reader / writer. First and second communication members (e.g., communication modules) for individually performing non-contact near-field wireless communication with each other;
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members (for example, silicone paper) formed in a shape of a film or a film,
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member A non-facing side communication member which is not located on the non-facing side main surface,
The communication distance between the facing side communication member and the reader / writer and the communication distance between the non-facing side communication member and the reader / writer are both set equal to or less than the wavelength of the RFID electromagnetic wave emitted from the reader / writer.
When viewed through from the overlapping direction, the partition member is formed with an open area which is removed in the form of a hole so as to partially overlap with the antenna of the facing communication member and the antenna of the non-facing communication member. And
The open area prevents or suppresses generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the open area on the facing main surface. The non-facing is caused by the eddy current that propagates through the partitioning member and reaches the non-facing side main surface or the eddy current generated around the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partitioning member. By inhibiting the phenomenon that a magnetic field is generated on the side main surface, the damping or shielding action of the partition member against electromagnetic waves is complemented, and magnetic flux coupling is generated only between the facing communication member and the reader / writer. Only the side communication member receives the RFID electromagnetic wave signal from the reader / writer, and sends a response signal to it 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 area, as described above, an eddy current on the facing main surface of the partition member And the propagation and generation of eddy currents on the non-facing side main surface can be prevented or suppressed, and a card compatible with, for example, an RFID electromagnetic wave signal 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 with the antennas of both communication members only in part, microwaves having strong directivity and rectilinearity, When passing through such an open area, radio waves reaching the antenna of the non-facing side communication member are limited and attenuated. Therefore, the antenna of the non-facing side communication member does not generate enough electromotive force to enable transmission and reception with the reader / writer. That is, the IC chip main body of the non-facing side communication member can not be activated. Even if activated, transmission (reply) to the reader / writer can not be made. In addition, in such a card, a pair of communication members may be provided in plural sets (plural pairs), and the frequency band or frequency range of each set may be different from each other.

When viewed in the overlapping direction, the first and second communication members are arranged offset with each other on the inside (that is, the direction of the short side or the long side) of the card outline of the rectangular shape,
The open area simultaneously includes a portion of the planar antenna of the facing communication member projected onto the facing main surface and a portion of the planar antenna of the non facing communication member projected onto the non-facing main surface. It may be formed as a through hole of

  As described above, magnetic flux coupling is less likely to occur between the non-face-to-face communication member and the reader / writer by offsetting the first and second communication members. And, since the open area is formed as a single through hole which simultaneously includes a part of both antennas, the processing cost of the open area is reduced. Further, since the alignment reference point of the open area can be narrowed to one place, 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 pierce | punching a partition member by single holes, such as circular, an ellipse, and a polygon.

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

  As described above, the first and second communication members are offset, so that magnetic flux coupling is less likely to occur between the non-facing side communication member and the reader / writer. And, in this case, since the open area is formed as a pair of through holes which separately includes a part of both antennas, the best open area adapted to each of the pair of 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 pierce | punching a partition member by a pair of holes, such as a circle, an ellipse, and a polygon.

  In the open area having these hole shapes, it is preferable that the maximum value D of the hole diameter is set 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 passing dimension of the holes) is set smaller than the wavelength λ (D <λ), the RFID electromagnetic wave has an open area having these hole shapes. It is difficult to pass and is attenuated. As a result, the antenna of the non-facing side communication member is less likely to generate an electromotive force, and coupled with the offset arrangement of the first and second communication members, magnetic flux coupling between the non-facing side communication member and the reader / writer is extremely unlikely to occur. Become.

  When viewed in the overlapping direction, the outer peripheral edge of the partition member is disposed to be retracted inward from 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.

  The partition member is moved away from the card outer side, and the outer peripheral edge of both communication members retracts inside from the outer peripheral edge of the partition member, whereby the electromagnetic wave signal for RFID which reaches the non-facing side main surface around the outer side of the partition member. Can be attenuated or shielded.

Furthermore, in order to solve the above problems, the noncontact near-field wireless communication card according to the present invention is adapted to an RFID electromagnetic wave signal of another specific frequency band (for example, a short wave band),
A single card used for contactless near field communication,
A partition member (for example, an aluminum foil, an aluminum plate, etc.) which is made of a nonmagnetic material having conductivity and attenuating or shielding (or reflecting) action against electromagnetic waves and formed into (for example, flat) sheet or film Paramagnetic material),
It includes an IC chip main body having a data storage function and a communication control function, and a loop (or coil) antenna having a signal transmission / reception function, and is a plan view facing one main surface and the other main surface of the partition member. , And the loop antenna receives the RFID electromagnetic wave signal in a predetermined frequency range (for example, in the short wave band) from the reader / writer, and transmits a response signal to it to the reader / writer. First and second communication members (for example, communication modules) for individually performing non-contact short distance wireless communication with the reader / writer;
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members (for example, silicone paper) formed in a shape of a film or a film,
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member A non-facing side communication member which is not located on the non-facing side main surface,
The communication distance between the facing side communication member and the reader / writer and the communication distance between the non-facing side communication member and the reader / writer are both set equal to or less than the wavelength of the RFID electromagnetic wave emitted from the reader / writer.
When viewed through from the overlapping direction, the partition member is opened and removed in a notch shape or a slit shape so as to partially overlap with the antenna of the facing side communication member and the antenna of the non-facing side communication member. An area is formed
The open area prevents or suppresses generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the open area on the facing main surface. The non-facing is caused by the eddy current that propagates through the partitioning member and reaches the non-facing side main surface or the eddy current generated around the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partitioning member. By inhibiting the phenomenon that a magnetic field is generated on the side main surface, the damping or shielding action of the partition member against electromagnetic waves is complemented, and magnetic flux coupling is generated only between the facing communication member and the reader / writer. Only the side communication member receives the RFID electromagnetic wave signal from the reader / writer, and sends a response signal to it 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 antenna and a partition member having an open area of a notch shape or a slit shape, the facing main surface of the partition member is similar to the above. It is possible to prevent or suppress the generation of the eddy current and the propagation and generation of the eddy current on the non-facing side main surface, and a card compatible with, for example, an RFID electromagnetic wave signal in the short wave band can be obtained easily and inexpensively. At that time, the open area provided in the partition member is formed in a notch shape or a slit shape that overlaps with the antennas of both communication members only in part, so that the directivity is weak and the lateral wave has a lateral spread. In this case, when passing through such an open area, electromagnetic waves reaching the antenna of the non-facing side communication member are limited and attenuated. Therefore, the antenna of the non-facing side communication member does not generate enough electromotive force to enable transmission and reception with the reader / writer. That is, the IC chip main body of the non-facing side communication member can not be activated. Even if activated, transmission (reply) to the reader / writer can not be made. In addition, in such a card, a pair of communication members may be provided in plural sets (plural pairs), and the frequency band or frequency range of each set may be different from each other.

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

  As described above, magnetic flux coupling is less likely to occur between the non-face-to-face communication member and the reader / writer by offsetting the first and second communication members. And, since the open area is formed as a single slit which crosses a part of both antennas at two places simultaneously, the processing cost of the open area is reduced. Further, since the alignment reference point of the open area can be narrowed to one place, alignment between the partition member and the communication member is facilitated. The open area is formed as a single slit in the partition member by separating the partition member into two parts by one groove (for example, a straight slit) extending in the short side direction or the long side direction. .

  Specifically, the single slit has two lengths of card outline at uneven positions offset from the longitudinal center of each loop antenna in the first and second communication members. It is formed to cross 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 in the loop antenna of the facing side communication member by electromagnetic induction. On the other hand, the loop antenna of the non-facing side communication member is covered with the partition member except for a single slit (open area) when viewed from the reader / writer side, and the single slit is the non-facing side communication member. The card is provided so as to intersect the long side of the card at an uneven position deviated (offset) from the center in the long axis direction of the loop antenna. Therefore, since the loop antenna of the non-facing side communication member passes (moves) the magnetic flux unequally even in the magnetic field of the RFID electromagnetic wave signal from the reader / writer, the IC chip body is driven. Does not generate an electromotive force necessary to send (reply) to the reader / writer.

When viewed in the overlapping direction, the first and second communication members are arranged offset with each other on the inside (that is, the direction of the short side or the long side) of the card outline of the rectangular shape,
The open area is a part of the looped antenna of the facing communication member projected on the facing main surface and a part of the looped antenna of the non-facing communication member projected on the non-facing main surface separately It may also be formed as a pair of notches that cross at.

  As described above, the first and second communication members are offset, so that magnetic flux coupling is less likely to occur between the non-facing side communication member and the reader / writer. And in this case, since the open area is formed as a pair of notches which cross apart a part of both antennas at two separate places, the best open area adapted to each of the pair of communication members is used as a partition member. It can be formed. In addition, an open area | region is formed in a partition member as a pair of notch by each notching a pair of short side which opposes in a partition member, or a pair of long side which opposes.

  Specifically, the pair of notches has two lengths of the card outline at an uneven position offset from the longitudinal center of each loop antenna in the first and second communication members. It is formed to cross each side and 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 in the loop antenna of the facing side communication member by electromagnetic induction. On the other hand, when viewed from the reader / writer side, the loop antenna of the non-facing side communication member is covered by the partition member except for a pair of notches (open area), and the pair of notches is looped of the non-facing side communication member It is provided to cross each other with the long side of the card at an uneven position deviated (shifted) from the center of the antenna in the long axis direction. Therefore, since the loop antenna of the non-facing side communication member passes (moves) the magnetic flux unequally even in the magnetic field of the RFID electromagnetic wave signal from the reader / writer, the IC chip body is driven. Does not generate an electromotive force necessary to send (reply) to the reader / writer.

  In the slit-like or notch-like open area, 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 largest width dimension when traversing the loop antenna) is set smaller than the wavelength λ (W <λ), the RFID electromagnetic waves are slit in these slits It is difficult to pass through the open area in the shape or notch shape and is attenuated. As a result, the antenna of the non-facing side communication member is less likely to generate an electromotive force, and coupled with the offset arrangement of the first and second communication members, magnetic flux coupling between the non-facing side communication member and the reader / writer is extremely unlikely to occur. Become.

  By the way, the IC chip main body of the first and second communication members respectively has a data storage unit for storing at least one of two-dimensional or three-dimensional image data, voice data and number code data for personal authentication. These personal identification data may be read from the data storage unit or written to the data storage unit by the reader / writer.

  As described above, if personal authentication data such as image data can be embedded in the first and second communication members (IC chip main body), it can be used in combination with conventionally used passwords and check codes such as personal identification numbers. It is possible to dramatically improve the security function. The data storage unit (memory) is either a read only memory (ROM) type (for example, an EP-ROM) or a random access memory (RAM) type (for example, an S-RAM). May be The image data may be either still images or moving images, and further includes complex data such as moving images with sound.

Furthermore, in order to solve the above problems, in the noncontact near-field wireless communication card of the present invention,
A plurality of sets of the first communication member disposed on one main surface and the second communication member disposed on the other main surface are installed as one set.
Each set may be individually transmitted and received between the first and second communication members and the reader / writer in different frequency bands or frequency ranges.

  As described above, by mounting a plurality of communication members (a plurality of pairs) in a single card, it is possible to further increase the data storage capacity. Therefore, one card can be used by a plurality of management systems having different frequency bands and frequency ranges.

And in order to solve the above-mentioned subject, the data parallel processing system concerning the present invention,
Any of the above-described cards for noncontact short distance wireless communication,
A first reader / writer disposed opposite to the first communication member and capable of only non-contact short distance wireless communication with the first communication member in a predetermined frequency band or frequency range;
A second member disposed opposite to the second communication member and capable of only contactless near-field wireless communication with the second communication member in the same frequency band or frequency range as the first communication member Equipped with a reader / writer,
Data read or write operation performed by the first reader / writer to a first data storage unit provided in the IC chip main body of the first communication member, and an IC chip main body of the second communication member The data reading or writing operation performed by the second reader / writer can be processed in parallel with (for example, simultaneously with) a second data storage unit provided in the second data storage unit.

  In this manner, data access (reading or writing) is simultaneously or sequentially performed on each data storage unit of one or more pairs of communication members using one or more sets of reader / writers in which two units form one set. Since it 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 (the same wavelength range) to the first and second communication members, and the corresponding communication members The communication distance between the and the reader / writer may be the same.

Again, in order to solve the above problems, in the noncontact near-field wireless communication card of the present invention,
In at least one of the two main surfaces, communication with the reader / writer is possible in a frequency band or frequency range different from the frequency band or frequency range in which individual transmission / reception between the first and second communication members and the reader / writer is enabled. One or more third communication members,
The third communication member is characterized in that it can communicate with the reader / writer in a single independent frequency band or frequency range.

  In this way, since it is also possible to mount the third communication member in a single card, the coverage of the card is further expanded.

In addition, in order to solve the above-mentioned problem when the third communication member is mounted, another data parallel processing system according to the present invention is:
A contactless near-field wireless communication card on which the third communication member is mounted;
The individual transmission and reception with the corresponding communication members are arranged opposite to each of the plurality of communication members arranged on the one main surface and the other main surface, and in the frequency band or frequency range of the corresponding RFID electromagnetic wave signal Equipped with multiple reader / writers to
It is characterized in that data reading or writing operations executed by the corresponding reader / writer can be processed in parallel (for example, simultaneously) to the data storage unit provided in each chip body.

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

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view schematically showing a first embodiment of a noncontact near-field wireless 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. 1 partially broken away. FIG. 2 is a bottom view showing the IC card of FIG. 1 partially broken away. IV-IV sectional view taken on the line of FIG. 2. VV sectional view taken on the line of FIG. 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 microwave front side communication module by a reader-writer. FIG. 10 is a block diagram showing the state of FIG. 9; Explanatory drawing which shows the separate transmission / reception state with the back side communication module for microwaves by a reader-writer. FIG. 12 is a block diagram showing the state of FIG. 11; FIG. 2 is a plan view showing an example of a surface image of the IC card of FIG. 1; FIG. 3 is a bottom view showing an example of a back surface image of the IC card of FIG. 2; Explanatory drawing which shows the simultaneous parallel transmission / reception state with the microwave front side communication module and the microwave back side communication module by two reader-writers. The disassembled perspective explanatory drawing which shows typically 2nd Example of the IC card which concerns on this 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. 18. The 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 microwave front side communication module 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 microwave front side communication module and the microwave back side communication module by two reader-writers. The disassembled perspective explanatory view which shows typically the 3rd Example of the IC card which concerns on this invention. FIG. 26 is a plan view showing the IC card of FIG. 25 partially cut away; FIG. 26 is a bottom view showing the IC card of FIG. 25 partially cut away. XXVIII-XXVIII sectional view taken on the line of FIG. The XXIX-XXIX sectional view taken on the line of FIG. The expansion perspective view of a back side shaping | molding board. The disassembled perspective explanatory view which shows typically the 4th Example of the IC card which concerns on this invention. FIG. 32 is a plan view showing the IC card of FIG. 31 with a portion broken away; FIG. 32 is a bottom view showing the IC card of FIG. 31 partially broken away. The 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 short wave front side communication module 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 transmission / reception state of the short wave front side communication module and the short wave back side communication module by two reader-writers simultaneously. The disassembled perspective explanatory view which shows typically 5th Example of the IC card which concerns on this invention. The top view which partially cuts and shows the IC card of FIG. FIG. 45 is a bottom view showing the IC card of FIG. FIG. 45 is a cross-sectional view along the line XLVII-XLVII in FIG. 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 short wave front side communication module 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 transmission / reception state of the short wave front side communication module and the short wave back side communication module by two reader-writers simultaneously. FIG. 16 is an 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 portion broken away; FIG. 61 is a bottom view showing the IC card of FIG. 60 with a portion broken away; FIG. 61 is a schematic cross-sectional view taken along line LXIII-LXIII of FIG. 61. The expansion perspective view of a partition plate. Explanatory drawing which shows the separate transmission / reception state with two microwave front side communication modules by two reader-writers. Explanatory drawing which shows the separate transmission / reception state with two back side communication modules for two microwaves by two reader-writers. Explanatory drawing which shows the simultaneous transmission-and-reception state of two front side communication modules and two back side communication modules by four reader-writers simultaneously. A disassembled perspective explanatory 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 in FIG. 68 with a portion broken away; FIG. 69 is a bottom view showing the IC card of FIG. 68 with a portion broken away. 69 is a schematic cross-sectional view taken along line LXXI-LXXI of FIG. The expansion perspective view of a partition plate. Explanatory drawing which shows the separate transmission / reception state with the microwave front side communication module and the short wave front side communication module 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 transmission-and-reception state of two front side communication modules and two back side communication modules by four reader-writers simultaneously. FIG. 18 is an exploded perspective view schematically showing an eighth embodiment of the IC card according to the present invention. FIG. 73 is a plan view showing the IC card of FIG. 76 with a portion broken away; FIG. 76 is a bottom view showing the IC card of FIG. 76 with a portion broken away; FIG. 78 is a schematic cross-sectional view taken along line LXXIX-LXXIX of FIG. 77. Explanatory drawing which shows the separate transmission / reception state with the short wave front side communication module 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 independent communication module by the other reader-writer. FIG. 6 is an explanatory view showing a state in which each of a total of three reader / writers transmits and receives simultaneously and in parallel with a corresponding communication module. The disassembled perspective explanatory view which shows typically the 9th Example of the IC card which concerns on this invention. FIG. 85 is a plan view showing the IC card of FIG. 84 with a portion broken away; FIG. 85 is a bottom view showing the IC card of FIG. 84 with a portion broken away; FIG. 85 is a schematic cross-sectional view taken along line LXXXVII-LXXXVII in FIG. 85. Explanatory drawing which shows the separate transmission / reception state with the microwave front side communication module 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 the other reader-writer. The explanatory view showing the transmission and reception state with the other independent communication module by still another reader writer. FIG. 7 is an explanatory view showing a state in which each of a total of four reader / writers transmits and receives simultaneously and in parallel with a corresponding communication module.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. The first embodiment of the 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 of FIG. FIG.

The IC card 100 shown in these figures is formed as a single IC card used for noncontact short distance wireless communication in the proximity RFID system, which is formed by heating and pressing after laminating each component shown below. It is formed on one horizontally long rectangular card of ID-1 size (width 85.60 mm × length 53.98 mm).
(1) Partition plate 10 (partition member) formed into one flat sheet or film and horizontally long rectangular shape;
(2) A horizontally-long rectangular front-side communication module 11 and a front-side main surface (upper surface in FIG. 1) and a rear-side main surface (lower surface in FIG. 1) of the partition plate 10 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 electrically insulating space (gap) corresponding to its own thickness is provided between them. Forming a front side insulating sheet 12 and a rear side insulating sheet 22 (first and second insulating members);
(4) Horizontally long rectangular front side molding plate 13 and rear side molding plate 23 (first and second molding) which are respectively disposed outside the front side communication module 11 and the rear side communication module 21 and hold the respective modules 11 and 21 in position. Element).

  Further, on the further outside of the front molding plate 13 and the rear molding plate 23, in order to protect the outer surfaces of the molding plates 13 and 23, a front protection sheet 14 as shown in FIG. 4 and FIG. The back side protection sheet 24 (a 1st and 2nd protection member) is each arrange | positioned. However, since the IC card 100 can be configured so as not to include at least one of the protective sheets 14 and 24, the protective sheets 14 and 24 are virtual long lines in FIG. 1 (explanatory view for exploded perspective). And are omitted in FIG. 2 (plan view) and FIG. 3 (bottom view). The same applies to the protection sheets 14 and 24 in other embodiments described later.

  The thickness of each component of the IC card 100 is, for example, 0.05 to 0.1 mm for the partition plate 10, 0.1 to 0.3 mm for each of the communication modules 11 and 21, and 0 for each of the insulating sheets 12 and 22, respectively. .05 to 0.3 mm, each of the molded plates 13 and 23 is 0.2 to 0.5 mm, and each of the protective sheets 14 and 24 is 0.03 to 0.1 mm. These components are generally made of thermoplastic resin except for the partition plate 10 and the insulating sheets 12 and 22 as described below, and an adhesive is applied and laminated on the facing surfaces as necessary. 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 forming.

  The partition plate 10 is located substantially at the center in the thickness direction of the IC card 100, has conductivity, and attenuates or shields against electromagnetic waves (or can be rephrased as reflecting by its function of drawing in and radiating electromagnetic waves) And a nonmagnetic material (that is, a paramagnetic material or a diamagnetic material). Here, a thin aluminum plate which is a paramagnetic material and has a thickness of, for example, 0.1 mm or less, that is, a flat aluminum foil is used. The partition plate 10 can also be made of an austenitic stainless steel plate, a conductive ceramic sheet, a film-like polyethylene (PE) resin, polyvinylidene chloride (PVDC) resin, or the like.

  The front side communication module 11 includes an IC chip main body 11M having a data storage function and a communication control function, and an antenna 11A having a signal transmission / reception function, and the IC chip main body 11M and the antenna 11A are mounted on a wiring board 11S serving as a base. (See Figure 2). Similarly, the back side communication module 21 includes an IC chip main 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 main body 21M and the antenna 21A serve as a base on the wiring board 21S. (See Figure 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 arranged overlapping in a back-to-back state at the same position in plan view. (See Figure 2 and Figure 3). The pair of communication modules 11 and 21 have a rectangular shape elongated in the lateral direction (left and right direction) of the IC card 100, and the respective antennas 11A and 21A are in the lateral direction, that is, the IC card 100 while being twisted (curved in S). It is a planar antenna extending like a wing in the longitudinal direction. The IC chip main bodies 11M and 21M are disposed substantially in the center in the lateral direction of the antennas 11A and 21A. The antennas 11A and 21A and the IC chip main 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, for example. Specifically, the front side wiring board 11S and the back side wiring board 21S are, for example, polyvinyl chloride (PVC) resin, acrylonitrile butadiene styrene (ABS) resin, polyethylene terephthalate (PET) resin, polyimide (PI) resin, etc. The sheet is made of a flexible thermoplastic resin sheet and affixed 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. 1).

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

  For example, silicone (SI) paper, which is a type of thermosetting resin, is used for the front side insulating sheet 12 and the rear 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 rear side communication module 21. The communication modules 11 and 21 are electrically insulated by filling a gap (insulation space) therebetween. The front communication module 11 and the back communication module 21 are disposed to face the main surfaces on the front and back sides of the partition plate 10 and to overlap each other in plan view via the front insulating sheet 12 and the back insulating sheet 22.

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

  As shown in FIGS. 10 and 12, the communication modules 11 and 21 (IC card 100) do not have a battery, and generate electric power by receiving electromagnetic wave signals from the antenna 1000A of the reader / writer 1000 by their own antennas 11A and 21A. A passive type (passive type) that generates an electromotive force for wireless communication in the units 11M3 and 21M3 is used. In addition to the power generation units 11M3 and 21M3 having such an electromotive force generation function, the IC chip main bodies 11M and 21M also include identification data (including personal identification data) for specifying the owner of the IC card 100 and the like. Data storage units 11M2 and 21M2 having a storage function and data storage units 11M2 and 21M2 and antenna 11A, so as to receive an RFID electromagnetic wave signal from antenna 1000A and transmit a response signal to that to antenna 1000A. Receiver / transmitter units 11M1 and 21M1 having a communication control function to issue a command to 21A.

  On the other hand, the reader / writer 1000 has a communication control function of transmitting an RFID electromagnetic wave signal to the antennas 11A and 21A and issuing a command to the antenna 1000A to receive a response signal thereto in addition to the antenna 1000A. It has control / adjustment functions such as transmission / reception timing of RFID electromagnetic wave signal when reading / writing data stored in data storage unit 11M2, 21M2 of IC card 100 and transmission / reception unit 1000S and data storage unit 11C A data processing unit 1000C and a power supply unit 1000B for supplying operation power to the transmission / reception unit 1000S and the data processing unit 1000C are provided.

  For example, in consideration of the situation where the output of the RFID electromagnetic wave signal emitted from the antenna 1000A of the reader / writer 1000 is restricted due to the regulation by the law, the surrounding environment, etc. May be attached. The auxiliary power supply units 11B and 21B preliminarily store a part of the electromotive force generated by the power generation units 11M3 and 21M3, and when the emergency situation such as the electromotive force shortage occurs, the auxiliary power for operation for the transmission / reception units 11M1 and 21M1 Have a function to supply

  As shown in FIG. 9, when the reader / writer 1000 fixedly disposed communicates with the front communication module 11 on the front side (left side in the drawing) of the IC card 100 which slides along the main surface (vertically in the drawing). The main surface on the front side (left side) of the partition plate 10 is the facing side main surface 10 fs, and the main surface on the back side (right side) is the non-facing side main surface 10 ns. The front communication module 11 located between the reader / writer 1000 and the partition plate 10 is superimposed on the facing main surface 10 fs of the partition plate 10 as the facing communication module, and is positioned between the reader / writer 1000 and the partition plate 10. The back side communication module 21 is overlapped on the non-facing side main surface 10 ns of the partition plate 10 as the non-facing side communication module. The slide movement direction of the IC card 100 indicated by the arrow symbol in FIG. 9 may be slightly inclined (for example, within the range of ± 15 ° in the vertical direction).

  At this time, the antenna 11A of the facing side communication module 11 (front side communication module) is predetermined in the antenna 1000A of the reader / writer 1000 (composed of the same planar antenna as the antenna 11A) and the microwave band (for example, standard frequency 920 MHz). It is possible to communicate in the frequency range. Specifically, the antenna 11A receives an electromagnetic wave signal for RFID from the antenna 1000A at, for example, 920 MHz ± 50 MHz (or 920 MHz ± 5%) as a frequency range in which communication (transmission and reception) is possible, and responds to the antenna 1000A. A signal can be emitted (see FIG. 10).

  The antenna communication distance L between the antenna 11A of the facing communication module 11 (front communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 21A of the non-facing communication module 21 (back communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L 'between them 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 standard frequency 920 MHz) (0 <L ≦ λ, 0 <L ′ ≦ λ ), Changes in electric field and magnetic field (changes in magnetic flux) up to one wavelength (unit wave) are directly transmitted as signals 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 disposed communicates with the back side communication module 21 on the back side (right side in the figure) of the IC card 100 sliding along the main surface (vertically in the figure). The main surface on the back side (right side) of the partition plate 10 is the facing side main surface 10 fs, and the main surface on the front side (left side) is the non-facing side main surface 10 ns. The back side communication module 21 positioned between the reader / writer 1000 and the partition plate 10 is superimposed on the facing side main surface 10 fs of the partition plate 10 as the facing side communication module, and is positioned between the reader / writer 1000 and the partition plate 10 The non-facing side communication module 11 is superimposed on the non-facing side main surface 10 ns of the partition plate 10 as the non-facing side communication module. The slide movement direction of the IC card 100 indicated by the arrow symbol in FIG. 11 may be slightly inclined (for example, within the range of ± 15 ° in the vertical direction).

  At this time, the antenna 21A of the face-to-face communication module 21 (backside communication module) can communicate with the antenna 1000A of the reader / writer 1000 in a predetermined frequency range in the microwave band (for example, standard frequency 920 MHz). Specifically, the antenna 21A receives an electromagnetic wave signal for RFID from the antenna 1000A at, for example, 920 MHz ± 50 MHz (or 920 MHz ± 5%) as a frequency range in which communication (transmission / reception) is possible, and responds to the antenna 1000A. A signal can be emitted (see FIG. 12).

  The antenna communication distance L between the antenna 21A of the facing communication module 21 (rear communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 11A of the non-facing communication module 11 (front communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L 'between them 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 standard frequency 920 MHz) (0 <L ≦ λ, 0 <L ′ ≦ λ ), Changes in electric field and magnetic field (changes in magnetic flux) up to one wavelength (unit wave) are directly transmitted as signals between the antenna 1000A of the reader / writer 1000 and the antennas 11A and 21A of the communication modules 11 and 21. .

  Then, magnetic flux coupling is caused only between the antenna 11A of the facing side communication module 11 of FIG. 9 (or the antenna 21A of the facing side communication module 21 of FIG. 11) and the antenna 1000A of the reader / writer 1000, and the RFID by microwave In order to enable individual transmission and reception of electromagnetic wave signals, the IC card 100 further has a structure as described next.

  When the IC card 100 for microwaves is seen through from the stacking direction in FIG. 9 (or FIG. 11), 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, which is removed through in a hole shape so as to partially overlap with the antenna 21A (or 11A) of the communication module 21 (or 11), is formed (see FIGS. 2 and 3) ).

  Specifically, the through hole 10H shown in FIG. 9 (or FIG. 11) is a planar antenna 11A (facing side communication module 11 (or 21) projected on the facing side main surface 10fs of the partition plate 10). Or 21A) and a portion of the planar antenna 21A (or 11A) of the non-facing side communication module 21 (or 11) projected on the non-facing side main surface 10ns at the same time It is formed in one circular hole (see FIGS. 2 and 3). The maximum hole diameter of the through hole 10H, that is, the diameter D (D ≦ 10 mm in this embodiment) is smaller than the wavelength λ (λRFID33 cm in this embodiment) of the RFID electromagnetic wave emitted from the reader / writer 1000 Is set (D <λ).

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

  Similarly, as shown in FIG. 2 and FIG. 3, when the IC card 100 is seen through from the overlaying direction, the front side insulation sheet 12 and the back side insulation sheet 22 have front side communication modules 11 and rear side communication modules 21 corresponding to their respective outer peripheral edges. While being formed larger, it 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 insulation sheet 12 and the back side insulation 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 holes 10H in the partition plate 10, an eddy current is generated on the facing main surface 10 fs of the partition plate 10 by the RFID electromagnetic wave signal from the reader / writer 1000 by the RFID. It is possible to prevent or suppress the phenomenon that generates a magnetic field. The through holes 10H are generated by an eddy current generated on the facing main surface 10 fs and propagating through the partition plate 10 to reach the non-facing surface main surface 10 ns, or a partition plate among RFID electromagnetic wave signals from the reader / writer 1000 due to microwaves. The function of turning around the outside of 10 and breaking the eddy current generated at the non-facing side main surface 10 ns can also inhibit the phenomenon of generating a magnetic field at the non-facing side main surface 10 ns.

  Thus, the through holes 10H complement the damping or shielding action of the partition plate 10 against electromagnetic waves. That is, 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 by the through hole 10H, and the response signal to it is read by the reader / writer. A function to transmit to 1000 is given. Therefore, the through holes 10H enable individual transmission and reception of the RFID electromagnetic wave signal by microwave as shown in FIGS.

  By the way, when the IC card 100 is seen through from the overlapping direction in FIG. 5, the front side communication module 11 and the back side communication module 21 are inside the card outline of the horizontally long rectangular shape and its short side direction (namely, FIG. 5) Then, they are arranged offset with respect to each other in the left and right direction). Specifically, the shape of the antenna 11A of the front side communication module 11 is not symmetrical (linearly symmetrical), but a dimensional difference is provided 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 main body 11M is not at the center in the width direction, and d2-d1 = d. There is a dimensional difference (d ず れ 0.5 mm in this embodiment) (see FIGS. 2 and 3). Therefore, by arranging the front side communication module 11 and the back side communication module 21 of the same specifications in a back-to-back state, the offset amount d between the two communication modules 11, 21 is rephrased, in other words, the antennas 11A of the two communication modules 11, 21 A distance d between connection points 21A and IC chip bodies 11M and 21M, in other words, 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 RFID electromagnetic wave signal 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), Even when passing through the through hole 10H of the plate 10, the diameter D is smaller than the wavelength λ and the passage itself is blocked, and the magnetic field necessary for electromotive force generation in the non-facing communication module 21 (or 11) hardly reaches . Even if a part of the RFID electromagnetic wave signal passes through the through hole 10H and reaches the antenna 21A (or 11A) of the non-facing communication module 21 (or 11), the difference in the antenna communication distance with the reader / writer 1000 Since the non-facing side communication module 21 (or 11) and the facing side communication module 11 (or 21) cause a difference in transmission / reception timing due to L'-L or the offset amount d described above, malfunction due to poor response is It is avoided.

  Due to the presence of such a through hole 10H, magnetic flux coupling occurs between the non-facing side communication module 21 and the reader / writer 1000 in FIG. 9 and between the non-facing side communication module 11 and the reader / writer 1000 in FIG. It becomes difficult. Therefore, the through holes 10H enable individual transmission and reception of the RFID electromagnetic wave signal by microwave as shown in FIGS.

  Here, the first embodiment of the individual transmission / reception mode of the RFID electromagnetic wave signal between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer is as follows. It will be. In the individual transmission / reception states (FIG. 9, FIG. 11, FIG. 15), 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 and reception between the front communication module 11 and the reader / writer 1000 <FIG. 9, FIG. 10>
A face-to-face communication module, that is, a front-side communication module, by the magnetic flux coupling described in the following [A] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. The magnetic flux coupling occurs only between the reader / writer 11 and the reader / writer 1000, and the individual transmission / reception of the RFID electromagnetic wave signal by the microwave becomes possible.
[A] When a transmission signal (for example, a read command signal) by microwaves 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 transmission / reception timing controlled by the data processing unit 1000C. The response signal transmitted from the antenna 11A (for example, the data signal read from the data storage unit 11M2 of the front side communication module 11) is received by the antenna 1000A.

[A] The occurrence of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface 10 fs of the partition plate 10 is blocked or suppressed by the through holes 10 H.
[B] A magnetic field generation phenomenon based on an eddy current that propagates from the facing main surface 10 fs to the non-facing main surface 10 ns or an eddy current generated on the non-facing main surface 10 ns by a transmission signal that goes around the outside of the partition plate 10 is It is inhibited by the through holes 10H.
[C] The diameter D <wavelength λ inhibits passage of the transmission signal through the through hole 10H, and the magnetic field necessary for generating an electromotive force in the non-facing communication module, that is, the rear communication module 21 hardly reaches.
[D] Due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules, the non-face-to-face communication module (here, back side communication module 21) and the face-to-face communication module (here, front side communication module 11) Since there is a difference in the transmission / reception timing, false operation based on poor response is avoided.

(Second aspect) Individual transmission and reception between the back side communication module 21 and the reader / writer 1000 <FIG. 11, FIG. 12>
A face-to-face communication module, that is, a back-side communication module, by the magnetic flux coupling described in the following [B] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. The magnetic flux coupling occurs only between the reader / writer and the reader / writer 1000, and individual transmission / reception of the RFID electromagnetic wave signal by microwaves becomes possible.
[B] When a transmission signal (for example, a read command signal) by microwaves 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] The occurrence of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface 10 fs of the partition plate 10 is blocked or suppressed by the through holes 10 H.
[B] A magnetic field generation phenomenon based on an eddy current that propagates from the facing main surface 10 fs to the non-facing main surface 10 ns or an eddy current generated on the non-facing main surface 10 ns by a transmission signal that goes around the outside of the partition plate 10 is It is inhibited by the through holes 10H.
[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-facing communication module, that is, the front communication module 11, does not reach easily.
[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) Since there is a difference in the transmission / reception timing, false operation based on poor response is avoided.

(Third aspect) Simultaneous and individual-type individual transmission and 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 capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A opposite to the back side communication module 21 is combined with the first reader / writer 1000 Is the case of arranging separately.
Also in this case, the magnetic flux coupling described in the following [A] and [B] 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, so that simultaneous and individual simultaneous transmission and reception of RFID electromagnetic wave signals by microwaves Becomes possible.

[A] When a transmission signal (for example, a read command signal) by microwaves 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, The antenna 1000A receives 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.
[B] When a transmission signal (for example, a reading command signal) by microwaves from the antenna 2000A of the second reader / writer 2000 is received by the antenna 21A, an electromotive force is generated in the facing communication module, that is, the back communication module 21, The antenna 2000A receives a response signal (for example, a data signal read from the data storage unit 21M2 of the back side communication module 21) transmitted from the antenna 21A at the transmission / reception timing of.

[A] The occurrence 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 holes 10H.
[B] The magnetic field generation phenomenon based on the eddy current generated from the facing main surface to the non-facing main surface and the eddy current generated on the non-facing main surface due to the transmission signal around the outside of the partition plate 10 It is inhibited by
[C] The diameter D <wavelength λ inhibits the passage of the transmission signal through the through hole 10H, and the magnetic field necessary for generating the electromotive force in the non-facing communication module hardly reaches it.
[D] Since the non-face-to-face communication module and the face-to-face communication module have a difference in transmission / reception timing due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules Operation is avoided.

  Therefore, in the third mode shown in FIG. 15, the operation of reading or writing data performed by the first reader / writer 1000 to the first data storage unit 11M2 provided in the IC chip main body 11M of the front side communication module 11; The data read or write operation executed by the second reader / writer 2000 can be simultaneously processed in parallel with the second data storage unit 21M2 provided in the IC chip main body 21M of the back side communication module 21.

  As described above, data can be accessed (read or written) simultaneously to each data storage unit 11M2, 21M2 of the pair of communication modules 11, 21 by using two reader / writers 1000, 2000, thus speeding up data processing Can be 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 rear 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 surfaces of the partition plate 10 are provided by providing the pair of communication modules 11 and 21 having planar antennas and the partition plate 10 having the circular through hole 10H. It is possible to prevent or suppress the generation of the eddy current and the propagation and generation of the eddy current on the non-facing side main surface, and to easily and inexpensively obtain the IC card 100 compatible with, for example, an RFID electromagnetic wave signal in the microwave band. At that time, the antenna communication distances L and L ′ are set to be equal to or less than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ). Since changes in the electric field and magnetic field are directly transmitted as signals between the antennas 1000A and 2000A of the reader / writer 1000 and 2000 and the antennas 11A and 21A of the communication modules 11 and 21, individual transmission and reception of RFID electromagnetic wave signals are facilitated. realizable. Furthermore, when one circular through hole 10H is aligned with the pair of communication modules 11, 21, if the center of the through hole 10H is a reference point, the partition plate 10 and the communication modules 11, 21 It can be easily aligned.

  In addition, the through hole 10H provided in the partition plate 10 is formed such 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 in part. Because of the arrangement, even if the microwaves have high directivity and straightness, the radio waves reaching the antenna of the non-facing communication module are limited and attenuated when passing through such through holes 10H. Therefore, the antenna of the non-face-to-face communication module does not generate enough electromotive force to enable transmission and reception with the reader / writer 1000 and 2000. That is, since only a weak electromotive force is generated, the IC chip main body of the non-facing side communication module can not be activated. Even if activated, transmission (reply) to the reader / writer 1000, 2000 can not be performed.

  The partition plate 10 made of aluminum foil is separated inward 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 to prevent an abnormal current from flowing in the IC card 100 due to grounding or short circuit, and also to go around the outside of the partition plate 10 to reach the non-facing side main surface. The RFID electromagnetic wave signal can be attenuated or shielded.

  Further, the front side insulating sheet 12 and the rear side insulating sheet 22 are formed larger than the front side communication module 11 and the rear side communication module 21 whose respective outer peripheral edges correspond, and the partition plate 10 is closed by closing the through holes 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 block | closed by the insulation sheets 12 and 22 from both sides, the shaping | molding board 13 or 23 (or insulation sheet 12 or 22) which respond | corresponds the front side communication module 11 and the back side communication module 21 at the time of an assembly. It is possible to prevent the adhesive or the like applied for fixing in position from being fluidized and invading into the through hole 10H when the two molding plates 13 and 23 are heated and fused.

  Further, the outer peripheral edges of both the insulating sheets 12 and 22 are arranged to be retracted inside of the card outer shape, so that moisture (rain water, user's sweat, etc.) outside the IC card 100 is absorbed by the insulating sheets 12 and 22. While preventing penetration into the inside, it does not prevent that the peripheral parts of both shaping | molding boards 13 and 23 heat-fuse.

(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. The through hole 10H may have 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 molding plate 13. In this embodiment, a picture of the cardholder is printed on the image display unit 130, and a plurality of (for example, two) identification numbers (ID No.) of the cardholder are displayed on the number display unit 131. Specifically, in the number display unit 131, the first identification number stored in the form of identification number code data in the data storage unit 11M2 (see FIG. 10) of the front side communication module 11 and the data storage of the back side communication module 21 The second identification number stored in the form of identification number code data is lined up and stamped and displayed in section 21M2 (see FIG. 12).

  On the other hand, FIG. 14 shows an example of the back surface image of the IC card 100, and the signature part 230 and the first and second bar code print parts 231F and 231R are provided on the back surface of the back side molding plate 23. The signature unit 230 is a card holder's signature entry field. The above first identification number is printed and displayed in the form of a one-dimensional and / or two-dimensional bar code on the first bar code print unit 231F, and the above-described first identification number is displayed on the second bar code print unit 231R. Two identification numbers are printed and displayed in the form of one-dimensional and / or two-dimensional barcodes. In this embodiment, a magnetic stripe type memory unit 232 is provided to enable the IC card 100 to be used as a conventionally known magnetic stripe card, and the first and second memory units described above are also provided therein. Identification numbers are stored in the form of magnetic storage.

  By the way, the IC chip main bodies 11M and 21M of the front side communication module 11 and the rear side communication module 21 of the IC card 100 store two-dimensional or three-dimensional image data, voice data and identification number code data for personal authentication. The units 11M2 and 21M2 are provided, respectively (see FIGS. 9 and 11). Among the data for personal authentication, as for the image data, the picture printed and displayed on the image display unit 130 is stored. Further, the identification number code data corresponds to the code in which the first and second identification numbers are stored and stamped and displayed on the number display portion 131, and the barcode printed and displayed on the barcode printing portions 231F and 231R. . These personal authentication data are read from the data storage units 11M2 and 21M2 or written to the data storage units 11M2 and 21M2 by the reader / writers 1000 and 2000 (see FIGS. 9 to 12 and 15).

  As described above, since personal identification data such as image data can be built in each of the front side communication module 11 and the back side communication module 21 (IC chip main bodies 11M and 21M), the user ID, password and password used conventionally. It is possible to dramatically improve the security function by using it together with a check code such as. The audio data may be reproduced simultaneously with, for example, the image data to improve the authentication accuracy, or may be converted into a composite data such as an animation with sound to enhance the presentation effect.

Second Embodiment
The second embodiment of the IC card according to the present invention is shown in FIGS. 16 is an exploded perspective view schematically showing an IC card, FIG. 17 is a partially broken plan view, FIG. 18 is a partially broken bottom view, and FIGS. 19 and 20 are lines XIX-XIX and XX-XX in FIG. FIG. 21 is an enlarged perspective view of a divider 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 figure) of the backside molding plate 23 (second molding member), a peripheral wall portion 123W is provided along the rectangular sides forming the card outer shape. The frame is formed to surround the four sides, and a rectangular frame 123 (frame member) is configured. In the internal space of the rectangular frame 123 (peripheral wall portion 123W), the partition plate 110 (partition member), the front side insulation sheet 12 and the back side insulation sheet 22 (first and second insulation members) and further the front side communication module 11 and the back side communication module 121 (first and second communication members) are accommodated (see FIGS. 19 and 20). The rectangular frame 123 can be made of, for example, an acrylic (methacrylic; PMMA) resin as the rear side molding plate 23 is.

  As shown in FIGS. 19 to 21, the peripheral edge of the partition plate 110 is bent in the thickness direction to form a peripheral surface portion 110C surrounding the inner surface of the peripheral wall portion 123W, and then bent outward in the radial direction to form the peripheral wall portion 123W The flange portion 110F is configured to be seated on the seat, and functions as a stepped partition. Specifically, a bottom plate portion forming the main body portion of the partition plate 110 and the circumferential surface portion 110C form a recess space opened toward the front side (upper side in the figure), and the front side insulating sheet 12 and the front side are formed in this recess space. The communication module 11 is accommodated, and the front molding plate 13 is closed. On the other hand, the back side insulating sheet 22 and the back side communication module 121 are accommodated in the internal space of the rectangular frame 123 (peripheral wall portion 123W) on the back side (downward in the figure) of the main body portion (bottom plate portion) of the partition plate 110. For example, the height of the circumferential 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 horizontally long 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 figure) and back side main surface (lower surface in the figure) And are arranged 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 since the operating frequency range is common to 920 MHz ± 50 MHz or 920 MHz ± 5%, the antenna 121A of the back side communication module 121 and the IC chip The shape and the like of the main body 121M are similar to the antenna 11A of the front side communication module 11 and the IC chip main body 11M. 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 in different sizes in the lateral length (that is, the wiring board 121S is short), and different positions in plan view (that is, They are arranged so as to overlap in the vertical direction (vertically offset) (see FIGS. 17 and 18).

  As shown in FIG. 22, when the reader / writer 1000 fixedly disposed communicates with the front communication module 11 on the front side (left side in the drawing) of the IC card 200 which slides along the main surface (vertically in the drawing). The main surface on the front side (left side) of the partition plate 110 is the facing side main surface 110 fs, and the main surface on the back side (right side) is the non-facing side main surface 110 ns. The front communication module 11 located between the reader / writer 1000 and the partition plate 110 is superimposed on the facing main surface 110 fs of the partition plate 110 as the facing communication module, and the position between the reader writer 1000 and the partition plate 110 The back side communication module 121 is superimposed on the non-facing side main surface 110 ns of the partition plate 110 as the non-facing side communication module.

  As shown in FIG. 23, when the reader / writer 1000 fixedly disposed communicates with the back side communication module 121 on the back side (right side in the figure) of the IC card 200 which slides along the main surface (vertically in the figure). The main surface on the back side (right side) of the partition plate 110 is the facing side main surface 110 fs, and the main surface on the front side (left side) is the non-facing side main surface 110 ns. The back side communication module 121 located between the reader / writer 1000 and the partition plate 110 is superimposed on the facing side main surface 110 fs of the partition plate 110 as a facing side communication module, and is located between the reader / writer 1000 and the partition plate 110 The non-facing side communication module 11 is superimposed on the non-facing side main surface 110 ns of the partition plate 110 as the non-facing side communication module.

  Then, magnetic flux coupling is generated only between the antenna 11A of the facing side communication module 11 of FIG. 22 (or the antenna 121A of the facing side communication module 121 of FIG. 23) and the antenna 1000A of the reader / writer 1000 to realize RFID by microwave In order to enable individual transmission and reception of electromagnetic wave signals, the IC card 200 further has a structure as described next.

  In FIG. 22 (or FIG. 23), when the IC card 200 for microwaves is seen through from the overlapping direction, the antenna 11A (facing side communication module 11 (or 121)) of the main body (bottom plate) of the partition plate 110 Or 121A) and the antenna 121A (or 11A) of the non-facing side communication module 121 (or 11) are partially removed in a hole shape so as to partially overlap with each other, the first through holes 110H1 and second Through holes 110H2 are formed (see FIGS. 17 and 18).

  Specifically, the first through holes 110H1 and the second through holes 110H2 shown in FIG. 22 (or FIG. 23) are projected onto the facing main surface 110fs of the partition plate 110, or the facing communication module 11 (or 121) a portion of the planar antenna 11A (or 121A) and a portion of the planar antenna 121A (or 11A) of the non-facing side communication module 121 (or 11) projected on the non-facing side main surface 110ns It is formed as a pair of elliptical holes in the included (i.e., included) state (see FIGS. 17 and 18). The maximum hole diameter of these through holes 110H1 and 110H2, that is, the long axis length D (D ≦ 10 mm in this embodiment) is the wavelength λ of microwaves for RFID electromagnetic waves emitted from the reader / writer 1000 (in this embodiment) It is set smaller than λ 小 33 cm) (D <λ).

  As shown in FIGS. 17 and 18, when the IC card 200 is seen through from the stacking direction, the outer peripheral edge of the partition plate 110 (ridge 110 F) is retracted and disposed inside the outline of the IC card 200. Further, the outer peripheral edges of the front side communication module 11 and the rear side communication module 121 are respectively retracted and disposed inside the outer peripheral edge of the partition plate 110 (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 insulation sheet 12 and the back side insulation sheet 22 have front side communication modules 11 and rear side communication modules 121 corresponding to their respective outer peripheral edges. While being formed larger, the through holes 110H1 and 110H2 of the partition plate 110 are kept closed (or covered) (see FIGS. 19 and 20). In this embodiment, the size (area) of the front side insulating sheet 12 is slightly smaller than that of the rear side insulating sheet 22 (see FIGS. 19 and 20).

  Referring back to FIGS. 22 and 23, when the through holes 110H1 and 110H2 are provided in the partition plate 110, an eddy current is generated on the facing main surface 110fs of the partition plate 110 by the RFID electromagnetic wave signal from the reader / writer 1000 due to microwaves. Thus, it is possible to prevent or suppress the phenomenon that causes the demagnetizing field. The through holes 110H1 and 110H2 are generated by the facing side main surface 110fs and propagate through the partition plate 110 to generate eddy currents leading to the non-facing side main surface 110ns or an electromagnetic wave signal for RFID by the microwave from the reader / writer 1000. The function of turning around the outside of the partition plate 110 and separating the eddy current generated on the non-facing side main surface 110 ns can also inhibit the phenomenon of generating a magnetic field on the non-facing side main surface 110 ns.

  Thus, the through holes 110H1 and 110H2 complement the damping or shielding action of the partition plate 110 against the electromagnetic waves. That is, 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 by the through holes 110H1 and 110H2, and a response signal thereto is received. The function of transmitting to the reader / writer 1000 is provided. Therefore, the through holes 110H1 and 110H2 enable individual transmission and reception of the RFID electromagnetic wave signal by microwave as shown in FIG. 22 and FIG.

  By the way, when the IC card 200 is seen through from the overlaying direction in FIG. 20, the front side communication module 11 and the back side communication module 121 are inside the card outline of the horizontally long rectangular shape and its short side direction (namely, FIG. 20) Then, they are arranged offset with respect to each other in the left and right direction). Specifically, an offset amount d between both communication modules 11, 121, in other words, a distance d between connection points between the antennas 11A, 121A of the communication modules 11, 12 and the IC chip main bodies 11M, 121M, further in other words A separation distance d is provided in the card short side direction of both IC chip main bodies 11M and 121M.

  Therefore, in FIG. 22 (or FIG. 23), the RFID electromagnetic wave signal transmitted from the antenna 1000A of the reader / writer 1000 passes through the facing communication module 11 (or 121) and the facing insulating sheet 12 (or 22), Even when passing through the through holes 110H1 and 110H2 of the plate 110, the passing itself is blocked because the diameter D is smaller than the wavelength λ, and the magnetic field necessary for electromotive force generation in the non-facing communication module 121 (or 11) reaches It is difficult to do. Even if part of the RFID electromagnetic wave signal passes through the through holes 110H1 and 110H2 and reaches the antenna 121A (or 11A) of the non-facing communication module 121 (or 11), the antenna communication distance with the reader / writer 1000 The non-face-to-face communication module 121 (or 11) and the face-to-face communication module 11 (or 121) have a difference in transmission / reception timing due to the difference L′−L of the above and the offset amount d described above. Operation is avoided.

  The presence of such through holes 110H1 and 110H2 causes magnetic flux coupling between the non-facing side communication module 121 and the reader / writer 1000 in FIG. 22 and between the non-facing side communication module 11 and the reader / writer 1000 in FIG. Is less likely to occur. Therefore, the through holes 110H1 and 110H2 enable individual transmission and reception of the RFID electromagnetic wave signal by microwave as shown in FIG. 22 and FIG. Further, in FIG. 22 (or FIG. 23), in the peripheral surface portion 110C and the flange portion 110F of the partition plate 110, the electromagnetic wave signal for RFID by the microwave transmitted from the reader / writer 1000 wraps around the peripheral wall portion 123W and the non-facing side communication It prevents or suppresses the occurrence of magnetic flux coupling with the module 121 (or 11).

  Here, the second embodiment of the individual transmission and reception mode of the RFID electromagnetic wave signal between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer is as follows. It will be. In the individual transmission / reception state diagrams (FIGS. 22 to 24), 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 and reception between the front communication module 11 and the reader / writer 1000 <FIG. 22>
A face-to-face communication module, that is, a front-side communication module, by the magnetic flux coupling described in the following [A] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. The magnetic flux coupling occurs only between the reader / writer 11 and the reader / writer 1000, and the individual transmission / reception of the RFID electromagnetic wave signal by the microwave becomes possible.
[A] When a transmission signal (for example, a read command signal) by microwaves 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) The antenna 1000A receives 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.

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal that has reached the facing main surface 110fs 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 110 fs to the non-facing main surface 110 ns or an eddy current generated on the non-facing main surface 110 ns due to a transmission signal around the outside of the partition plate 110 is It is inhibited by the through holes 110H1 and 110H2.
[C] The diameter D <wavelength λ prevents the transmission signal from passing through the through holes 110H1 and 110H2, and the nonmagnetic communication module, that is, the magnetic field necessary for generating an electromotive force in the back communication module 121 hardly reaches.
[D] Due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules, the non-face-to-face communication module (here, back side communication module 121) and the face-to-face communication module (here, front side communication module 11) Since there is a difference in transmission / reception timing, false operation based on poor response is avoided.

(Second mode) Individual transmission and reception between the back side communication module 121 and the reader / writer 1000 <FIG. 23>
A face-to-face communication module, that is, a back-side communication module, by the magnetic flux coupling described in the following [B] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. The magnetic flux coupling occurs only between the reader 121 and the reader / writer 1000, and individual transmission and reception of the RFID electromagnetic wave signal by microwaves becomes possible.
[B] When a transmission signal (for example, a read command signal) by microwaves from the antenna 1000A of the reader / writer 1000 is received by the antenna 121A, an electromotive force is generated in the back side communication module 121, and the data processing unit 1000C (see FIG. 12) The antenna 1000A receives 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 controlled by

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal that has reached the facing main surface 110fs 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 110 fs to the non-facing main surface 110 ns or an eddy current generated on the non-facing main surface 110 ns due to a transmission signal around the outside of the partition plate 110 is It is inhibited by the through holes 110H1 and 110H2.
[C] The diameter D <wavelength λ prevents the transmission signal from passing through the through holes 110H1 and 110H2, and the magnetic field necessary for generating an electromotive force in the non-facing communication module, that is, the front communication module 11, does not reach easily.
[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) Since there is a difference in the transmission / reception timing, false operation based on poor response is avoided.

(Third Aspect) Simultaneous parallel individual transmission and 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 capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A opposite to the back side communication module 121 with the first reader / writer 1000 Is the case of arranging separately.
Also in this case, the magnetic flux coupling described in the following [A] and [B] 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 121 and the second reader / writer 2000, so that simultaneous and individual simultaneous transmission and reception of RFID electromagnetic wave signals by microwaves Becomes possible.

[A] When a transmission signal (for example, a read command signal) by microwaves 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, The antenna 1000A receives 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 of.
[B] When a transmission signal (for example, a read command signal) by microwaves 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. The antenna 2000A receives 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 of (1).

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal having reached the facing main surface 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 generated from the facing main surface to the non-facing main surface and the eddy current generated on the non-facing main surface due to the transmission signal around the outside of the partition plate 110 is the through hole 110H1. , 110H2 inhibit.
[C] The diameter D <wavelength λ prevents the transmission signal from passing through the through holes 110H1 and 110H2, and it is difficult for the magnetic field necessary for generating the electromotive force in the non-facing communication module to reach.
[D] Since the non-face-to-face communication module and the face-to-face communication module have a difference in transmission / reception timing due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules Operation is avoided.

  Therefore, in the third mode shown in FIG. 24, the operation of reading or writing data performed by the first reader / writer 1000 with respect to the first data storage unit provided in the IC chip main body 11M of the front side communication module 11; Data reading or writing operations executed by the second reader / writer 2000 can be simultaneously processed in parallel with 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 each data storage unit of the pair of communication modules 11 and 12 using two reader / writers 1000 and 2000, data processing can be accelerated. Can. 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 flat antennas and the partition plate 110 having a pair of elliptical through holes 110H1 and 110H2, Generation of an eddy current on the facing main surface and propagation or generation of an eddy current on the non-facing main surface are prevented or suppressed, and for example, an IC card 200 compatible with an RFID electromagnetic wave signal in the microwave band is easily and inexpensively obtained. Can. At that time, the antenna communication distances L and L ′ are set to be equal to or less than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ). Since changes in the electric field and magnetic field are directly transmitted as signals between the antennas 1000A and 2000A of the reader / writer 1000 and 2000 and the antennas 11A and 121A of the communication modules 11 and 121, individual transmission and reception of RFID electromagnetic wave signals are facilitated. realizable. Moreover, since the pair of through holes 110H1 and 110H2 and the pair of communication modules 11 and 121 are provided in one-to-one correspondence, positioning during manufacture is facilitated and dimensional accuracy is also improved.

  Further, peripheral surface portion 110C and collar portion 110F are formed on partition plate 110, and collar portion 110F is seated on rectangular frame 123 (peripheral wall portion 123W), whereby one of the RFID electromagnetic wave signals transmitted from reader / writer 1000, 2000 is obtained. It is possible to prevent or prevent an eddy current from being generated on the non-facing side main surface of the partition plate 110 by blocking or suppressing the parts from going around the outside of the partition plate 110.

  Furthermore, since the partition plate 110, both insulating sheets 12 and 22, and both communication modules 11 and 121 are stacked in layers and accommodated in the internal space of the rectangular frame 123 (peripheral wall portion 123W), the forming plates 13 and 23 from the front and back sides. If a pressing force is applied to the IC card 200, it is possible to easily obtain the IC card 200 having a predetermined thickness without damaging the antennas 11A and 121A of the communication modules 11 and 121.

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

  In the IC card 300 for microwaves shown in FIG. 25, the back side molding plate 223 (second molding member) is erected along each side of the rectangular shape forming the card outer shape, and the ridge portion of the stepped partition plate 110 The peripheral wall 223W holding the 110F is integrally molded with the main body (bottom plate) 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 keep the frequency of occurrence of response failure and malfunction low, so it is suitable for mass production while improving quality.

  In the third embodiment, the individual transmission / reception mode of the RFID electromagnetic wave signal between the antenna of the front communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer has already been described. Since the second embodiment is the same as the second embodiment (FIGS. 22 to 24), the description 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 an 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. The IC card 400 of the fourth embodiment is different from the IC card 100 of the first embodiment in the form of the antenna provided in the communication module and the form of the open area removed through the partition plate.

The IC card 400 shown in FIG. 31 to FIG. 34 is a single IC card used for noncontact short distance wireless communication in the proximity RFID system, which is formed by heating and pressing after laminating the following components. As one of the ID-1 size (85.60 mm in width × 53.98 mm in length), it is formed on one horizontally long rectangular card.
(1) A flat sheet-like or film-like partition plate 310 (a partition member) formed in a horizontally long rectangular shape;
(2) A horizontally long rectangular front-side communication module 311 and a front-side main surface (upper surface in FIG. 31) and a rear-side main surface (lower surface in FIG. 31) of the partition plate 310 Back side communication module 321 (first and second communication members);
(3) An electrically insulating space (gap), which is disposed 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, respectively, and corresponds to its own thickness Forming a front side insulating sheet 12 and a rear side insulating sheet 22 (first and second insulating members);
(4) Horizontally long rectangular front side molding plate 13 and rear side molding plate 23 (first and second molding) which are respectively disposed outside the front side communication module 311 and the rear side communication module 321 and hold the modules 311 and 321 in position. Element).

  The front side protective sheet 14 and the rear side protective sheet 24 (first and second protective members) are as described in the first embodiment. Further, the thickness of each component of the IC card 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 reflecting by its function of pulling in and radiating electromagnetic waves) And a nonmagnetic material (that is, a paramagnetic material or a diamagnetic material). Here, a thin aluminum plate which is a paramagnetic material and has a thickness of, for example, 0.1 mm or less, that is, a flat aluminum foil is used. The partition plate 310 is separated (divided) into a left side partition plate 310L (partition member) and a right side partition plate 310R (partition member) by a linear groove (a slit 310S described later) extending in the short side direction.

  The front side communication module 311 includes an IC chip main body 311M having a data storage function and a communication control function, and an antenna 311A having a signal transmission / reception function, and the IC chip main body 311M and the antenna 311A are mounted on a wiring board 311S serving as a base. (See FIG. 32). Similarly, the back side communication module 321 includes an IC chip main 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 main body 321M and the antenna 321A serve as a base on the 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 rectangular shapes similar to the card outlines, and the one having the same outline is in plan view It is arranged to overlap in a back-to-back condition 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-shaped (or coil-shaped) antennas that circulate a plurality of times (four times in the figure) in a rectangular spiral around substantially the entire surface of the corresponding wiring boards 311S and 321S. . The pair of IC chip main bodies 311M and 321M are connected to the corresponding rectangular loop antennas 311A and 321A at corner portions that are diagonal positions in plan view.

  The antennas 311A and 321A and the IC chip main 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, for example, polyvinyl chloride (PVC) resin, acrylonitrile butadiene styrene (ABS) resin, polyethylene terephthalate (PET) resin, polyimide (PI) resin, etc. The sheet is made of a flexible thermoplastic resin sheet, and is affixed 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).

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

  For example, silicone (SI) paper, which is a type of thermosetting resin, is used for the front side insulating sheet 12 and the rear side insulating sheet 22, and between the partition plate 310 and the front side communication module 311 and the partition plate 310 and the rear side communication module 321 The communication modules 311 and 321 are electrically insulated by filling gaps (insulation spaces) between them. The front communication module 311 and the back communication module 321 are disposed to face the main surfaces on the front and back sides of the partition plate 310 and to overlap each other in plan view via the front insulating sheet 12 and the back insulating sheet 22.

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

  As shown in FIG. 41, when the reader / writer 1000 fixedly disposed communicates with the front communication module 311 on the front side (upper side in the drawing) of the IC card 400 which slides along the main surface (in the horizontal direction in the drawing). The main surfaces on the front side (upper side) of the partition plates 310L and 310R (310) become facing side main surfaces 310Lfs and 310Rfs, and the main surfaces on the back side (lower side) become non-facing side main surfaces 310Lns and 310Rns. The front communication module 311 located 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 communication module, and the reader / writer 1000 The back side communication module 321 which is not located between the and the partition plates 310L and 310R (310) is superimposed on the non-facing side main surfaces 310Lns and 310Rns of the partition plates 310L and 310R (310) as the non-facing side communication module. The slide movement direction of the IC card 400 indicated by the arrow symbol in FIG. 41 may be slightly inclined (for example, within the range of ± 15 ° in the left-right direction).

  At this time, the antenna 311A of the face-to-face communication module 311 (front side communication module) is predetermined in the antenna 1000A of the reader / writer 1000 (composed of 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 of Specifically, the antenna 311A receives an electromagnetic wave signal for RFID from the antenna 1000A at, for example, 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%) as a frequency range in which communication (transmission and reception) is possible. A response signal can be transmitted to the antenna 1000A.

  The antenna communication distance L between the antenna 311A of the facing communication module 311 (front communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 321A of the non-facing communication module 321 (back communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L 'between them is set to 3 cm or less. Thus, 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 (the wavelength λ2222 m at the standard frequency of 13.56 MHz) (0 <L ≦ λ, 0 <L' Changes in electric and magnetic fields (changes in magnetic flux) up to one wavelength (unit wave) from ≦ λ) are directly transmitted as signals between the antenna 1000A of the reader / writer 1000 and the antennas 311A and 321A of the communication modules 311 and 321. Be done.

  As shown in FIG. 42, when the reader / writer 1000 fixedly disposed communicates with the back side communication module 321 on the back side (the lower side in the figure) of the IC card 400 sliding along the main surface (in the horizontal direction in the figure). The main surfaces on the back side (lower side) of the partition plate 310 become the facing side main surfaces 310Lfs, 310Rfs, and the main surfaces on the front side (upper side) become the non-facing side main surfaces 310Lns, 310Rns. The back side communication module 321 located between the reader / writer 1000 and the partition plate 310 is superimposed on the facing side main surfaces 310Lfs, 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 not located on the top is superimposed on the non-facing-side main surfaces 310Lns, 310Rns of the partition plate 310 as the non-facing-side communication module. The slide movement direction of the IC card 400 indicated by the arrow symbol in FIG. 11 may be slightly inclined (for example, within the range of ± 15 ° in the left-right direction).

  At this time, the antenna 321A of the face-to-face 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 electromagnetic wave signal for RFID from the antenna 1000A at, for example, 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%) as a frequency range in which communication (transmission / reception) is possible. A response signal can be transmitted to the antenna 1000A.

  The antenna communication distance L between the antenna 321A of the facing communication module 321 (rear communication module) and the antenna 1000A of the reader / writer 1000 and the antenna 311A of the non-facing communication module 311 (front communication module) and the antenna 1000A of the reader / writer 1000 The antenna communication distance L 'between them is set to 3 cm or less. Thus, 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 (the wavelength λ2222 m at the standard frequency of 13.56 MHz) (0 <L ≦ λ, 0 <L' Changes in electric and magnetic fields (changes in magnetic flux) up to one wavelength (unit wave) from ≦ λ) are directly transmitted as signals between the antenna 1000A of the reader / writer 1000 and the antennas 311A and 321A of the communication modules 311 and 321. Be done.

  Then, magnetic flux coupling is caused only between the antenna 311A of the facing side communication module 311 in FIG. 41 (or the antenna 321A of the facing side communication module 321 in FIG. 42) and the antenna 1000A of the reader / writer 1000, and short wave RFID In order to enable individual transmission and reception of electromagnetic wave signals, the IC card 400 further has a structure as described next.

  In FIG. 41 (or FIG. 42), when the short wave IC card 400 is seen through from the overlapping direction, the partition plates 310L and 310R, the antenna 311A (or 321A) of the facing side communication module 311 (or 321) and the non-facing side A slit 310S as an open area is formed so as to overlap and be removed so as to partially overlap with 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 of the facing communication module 311 (or 321) projected on the facing main surfaces 310Lfs, 310Rfs of the partition plates 310L, 310R. A part of the antenna 311A (or 321A) and a part of the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) projected on the non-facing side main surface 310Lns, 310Rns simultaneously in two places 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 the wavelength λ of a short wave which is an RFID electromagnetic wave emitted from the reader / writer 1000 (λ2222 m in this embodiment) It is set smaller than)) (W <λ).

  As shown in FIGS. 32 and 33, when the IC card 400 is seen through from the overlaying direction, the outer peripheral edge of the partition plates 310L and 310R (310) is retracted inside the outline of the IC card 400 and disposed. Further, the outer peripheral edges of the front side communication module 311 and the rear side communication module 321 are respectively retracted and disposed inside 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 insulation sheet 12 and the back side insulation sheet 22 have a front side communication module 311 and a rear side communication module 321 corresponding to their outer peripheral edges. While being formed larger, it is held in a state of closing (or covering) the slits 310S of the partition plates 310L and 310R (310) (see FIG. 34). In this embodiment, both of the front side insulating sheet 12 and the rear side insulating sheet 22 have the same shape and size as the combination of the partition plates 310L and 310R and the slits 310S (see FIG. 31).

  Referring back to FIGS. 41 and 42, by providing the slits 310S in the partition plate 310, eddy currents are generated on the facing main surfaces 310Lfs, 310Rfs of the partition plates 310L, 310R by the RFID electromagnetic wave signal by the short wave from the reader / writer 1000. Thus, it is possible to prevent or suppress the phenomenon that causes the demagnetizing field. In addition, the slit 310S is generated on the facing main surface 310Lfs, 310Rfs and propagates through the partition plates 310L, 310R to generate eddy current leading to the non-facing surface main surface 310Lns, 310Rns or an electromagnetic wave signal for RFID by the short wave from the reader / writer 1000. Among them, the function of turning around the outside of the partition plates 310L and 310R to divide 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 slits 310S complement the damping or shielding action of the partition plate 310 against electromagnetic waves. That is, by 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 thereto is sent to the reader / writer 1000. The ability to send out towards is given. Therefore, the slit 310S enables individual transmission and 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 overlaying direction in FIG. 34, the front side communication module 311 and the back side communication module 321 are inside the card outline of horizontally long rectangular shape and its long side direction (namely, FIG. 34) Then, they are arranged offset with respect to each other in the left and right direction). Specifically, an offset amount d between the two communication modules 311 and 321, in other words, a distance d between connection points between the antennas 311A and 321A of the two communication modules 311 and 321 and the IC chip main bodies 311M and 321M A separation distance d is provided in the card long side direction of both IC chip main 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), Even when trying to pass through the slit 310S of the plate 310, the passage itself is blocked because the maximum transverse width W is smaller than the wavelength λ, and the magnetic field necessary for electromotive force generation in the non-facing communication module 321 (or 311) reaches Hateful. Even if a part of the RFID electromagnetic wave signal passes through the slit 310S and reaches the antenna 321A (or 311A) of the non-facing side communication module 321 (or 311), the difference L in the antenna communication distance with the reader / writer 1000 Because the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321) make a difference in transmission / reception timing due to '-L or the offset amount d described above, malfunction due to poor response is avoided. Be done.

  Furthermore, in FIGS. 32 and 34, the slits 310S are at unequal positions deviated (ie, shifted) from the centers of the loop antennas 311A and 321A in the front side communication module 311 and the rear side communication module 321 in the long axis direction. Each intersects with the two long sides of the card outline. Specifically, the width center CS of the slit 310S is offset from the center CA in the long axis direction of the loop antennas 311A and 321A by the deviation amount LC.

  Therefore, in FIG. 41 (or FIG. 42), the magnetic flux in 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, electromotive force is generated in the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) by electromagnetic induction. On the other hand, the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) is covered by the partition plates 310L and 310R except for the slit 310S when viewed from the reader / writer 1000 side, and the slit 310S is not The card is provided so as to cross the long side of the card at an uneven position deviated (shifted) from the center in the long axis direction of the loop antenna 321A (or 311A) of the facing side communication module 321 (or 311). Therefore, even if the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) is in the magnetic field of the RFID electromagnetic wave signal from the reader / writer 1000, the magnetic flux passes (moves) unevenly. As a result, the IC chip main body 321M (or 311M) is driven to generate no electromotive force necessary to transmit (reply) the reader / writer 1000.

  Due to the presence of such slits 310S, magnetic flux coupling is less likely to occur between the non-facing side communication module 321 and the reader / writer 1000 in FIG. 41 and between the non-facing side communication module 311 and the reader / writer 1000 in FIG. Become. Therefore, the slit 310S enables individual transmission and reception of RFID electromagnetic wave signals by short waves as shown in FIGS.

  Here, the fourth embodiment of the individual transmission / reception mode of the RFID electromagnetic wave signal between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer is as follows. It will be. In the individual transmission / reception state (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 aspect) Individual transmission and reception between the front communication module 311 and the reader / writer 1000 <FIG. 41>
Face-to-face communication module, that is, front-side communication module, by the magnetic flux coupling described in the following [A] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur. Magnetic flux coupling occurs only between the reader / writer 311 and the reader / writer 1000, and individual transmission / reception of RFID electromagnetic wave signals by short waves becomes possible.
[A] When a shortwave transmission signal (for example, a read command signal) from the antenna 1000A of the reader / writer 1000 is received by the antenna 311A, an electromotive force is generated in the front communication module 311, and the antenna is controlled at the transmission / reception timing controlled by the data processing unit. A response signal (for example, a data signal read from a data storage unit of the front side communication module 311) transmitted from 311A is received by the antenna 1000A.

[A] The occurrence of the eddy current and the demagnetizing field due to the transmission signal that has reached the facing main surfaces 310Lfs, 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] For eddy currents generated on the non-facing side main surfaces 310Lns and 310Rns due to eddy currents propagating from the facing side main surfaces 310Lfs and 310Rfs to the non-facing side main surfaces 310Lns and 310Rns The magnetic field generation phenomenon based on is inhibited by the slit 310S.
[C] Crossing width W <wavelength λ prevents the transmission signal from passing through the slit 310S, so that the magnetic field necessary for generating an electromotive force in the non-facing communication module, that is, the rear communication module 321 hardly reaches.
[D] Due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules, the non-face-to-face communication module (here back side communication module 321) and the face-to-face communication module (here front side communication module 311) Since there is a difference in the transmission / reception timing, false operation based on poor response is avoided.
[E] Since the amount of deviation LC is provided in the slit 310S, the loop antenna 321A of the non-facing side communication module 321 does not generate an electromotive force.

Second Embodiment Individual Transmission and Reception Between Back Side Communication Module 321 and Reader / Writer 1000 <FIG. 42>
A face-to-face communication module, that is, a back-side communication module, by the magnetic flux coupling described in the following [B] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur. The magnetic flux coupling occurs only between the reader / writer 321 and the reader / writer 1000, and the individual transmission / reception of the RFID electromagnetic wave signal by short wave becomes possible.
[B] When a short wave transmission signal (for example, a read command signal) 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] The occurrence of the eddy current and the demagnetizing field due to the transmission signal that has reached the facing main surfaces 310Lfs, 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] For eddy currents generated on the non-facing side main surfaces 310Lns and 310Rns due to eddy currents propagating from the facing side main surfaces 310Lfs and 310Rfs to the non-facing side main surfaces 310Lns and 310Rns The magnetic field generation phenomenon based on is inhibited by the slit 310S.
[C] Crossing width W <wavelength λ prevents the transmission signal from passing through the slit 310S, so that the magnetic field necessary for generating an electromotive force in the non-facing communication module, ie, the front communication module 311, hardly reaches.
[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) Since there is a difference in the transmission / reception timing, false operation based on poor response is avoided.
[E] Since the amount of bias 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 parallel individual transmission and reception between the front side communication module 311 and the first reader / writer 1000 and between the back communication module 321 and the second reader / writer 2000 <FIG. 43>
The second reader / writer 2000 having a planar antenna 2000A capable of communicating in the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) similar to the antenna 1000A facing the back side communication module 321 is selected. This is a case where it is arranged separately from the one reader / writer 1000.
Also in this case, the magnetic flux coupling described in the following [A] and [B] 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 communication module 321 and the second reader / writer 2000, so that simultaneous and individual simultaneous transmission and reception of RFID electromagnetic wave signals by short wave It will be possible.

[A] When a short wave transmission signal (for example, a read command signal) from the antenna 1000A of the first reader / writer 1000 is received by the antenna 311A, an electromotive force is generated in the facing communication module, that is, the front communication module 311. A response signal (for example, a data signal read from a data storage unit of the front side communication module 311) transmitted from the antenna 311A at transmission / reception timing is received by the antenna 1000A.
[B] When a short wave transmission signal (for example, a read command signal) 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. 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] The occurrence of eddy current and demagnetizing field due to the transmission signal that has reached 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 generated on the non-facing side main surface due to the eddy current propagating from the facing side main surface to the non-facing side main surface or the transmission signal flowing around the outside of the partition plate 310 It is inhibited.
[C] Crossing width W <wavelength λ prevents the transmission signal from passing through the slit 310S, so that the magnetic field necessary for generating the electromotive force in the non-facing communication module hardly reaches.
[D] Since the non-face-to-face communication module and the face-to-face communication module have a difference in transmission / reception timing due to the presence of the antenna communication distance difference L'-L and the offset amount d between the communication modules Operation is avoided.
[E] Since the amount of deviation LC is provided in the slit 310S, the loop antenna of the non-facing side communication module does not generate an electromotive force.

  Therefore, in the third mode shown in FIG. 43, an operation of reading or writing data executed by the first reader / writer 1000 with respect to the first data storage unit provided in the IC chip main body 311M of the front side communication module 311; The second data storage unit provided in the IC chip main body 321M of the back side communication module 321 can simultaneously process data read or write operations executed by the second reader / writer 2000 in parallel.

  As described above, since data access (reading or writing) can be simultaneously performed on each data storage unit of the pair of communication modules 311 and 321 using two reader / writers 1000 and 2000, data processing can be accelerated. Can. At this time, the first and second reader / writers 1000 and 2000 have the same frequency range (13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) as the front side communication module 311 and the rear side communication module 321. While transmitting an output signal, 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 loop antennas and the partition plate 310 including the linear slit 310S, the facing main surface of the partition plate 310 is obtained. The generation of the eddy current and the propagation and generation of the eddy current on the non-facing side main surface are prevented or suppressed, and an IC card 400 compatible with, for example, an RFID electromagnetic wave signal in the short wave band can be obtained easily and inexpensively. At that time, the antenna communication distances L and L ′ are set to be equal to or less than the wavelength λ (0 <L ≦ λ, 0 <L ′ ≦ λ), so that in the case of a short wave with weak directivity and lateral spread, Since changes in electric and magnetic fields are directly transmitted as signals between the antennas 1000A and 2000A of the reader / writer 1000 and 2000 and the antennas 311A and 321A of the communication modules 311 and 321, individual transmission and reception of RFID electromagnetic wave signals are facilitated realizable.

  Further, the slit 310S included in the partition plate 310 is formed such that the transverse width W is smaller than the wavelength λ (W <λ), and the loop antennas 311A and 321A are deviated from the longitudinal center CA by the deviation amount 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 such a slit 310S, because Ru. Therefore, the antenna of the non-face-to-face communication module does not generate enough electromotive force to enable transmission and reception with the reader / writer 1000 and 2000. That is, since only a weak electromotive force is generated, the IC chip main body of the non-facing side communication module can not be activated. Even if activated, transmission (reply) to the reader / writer 1000, 2000 can not be performed.

(Modification of slit)
The shape of the slit 310S described above is a groove having a linear shape and a constant width in the vertical direction (vertical direction in the drawing) 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 change so as to gradually increase as shown in FIG. 36, or may change in size in the middle as shown in FIG. Further, the shape of the slit 310S may be bent like a lightning as shown in FIG. 38 or may be bent like a zigzag as shown in FIG. Furthermore, it may be slightly inclined (eg, within ± 15 ° with respect to the vertical direction) as in the slit 310S of FIG.

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

  In the short wave IC card 500 shown in FIG. 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 are the front communication module 311 (first communication member) and A part of the loop antennas 311A and 321A of the back side communication module 321 (second communication member) is traversed separately at two places.

  45 and 46, the pair of notches 410N and 410N are uneven (or deviated) from the longitudinal center of the loop antennas 311A and 321A in the front side communication module 311 and the rear side communication module 321, respectively. Intersect separately with the two long sides of the card outline at the location. Specifically, the width centers CN of the pair of notches 410N, 410N are provided offset from the center CA in the long axis direction of the loop antennas 311A, 321A by the deviation amount LC.

The pair of notches 410N and 410N has the same function as the single slit 310S in the IC card 400 of the fourth embodiment, and exhibits the same function and effect. Further, in the fifth embodiment, individual transmission and 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. 59) is equivalent to the fourth embodiment (FIGS. 41 to 43) described above. Therefore, detailed explanation is omitted by reading as follows.
· Partition plate 310, 310L, 310R → partition plate 410
・ Slit 310S → notch 410N
.Face-side main surface 310 Lfs, 310 Rfs → face-side main surface 410 fs
・ Non-facing side main surface 310Lns, 310Rns → non-facing side main surface 410ns

(Modification of notch)
The pair of notches 410N and 410N described above are rectangular grooves of a fixed width aligned in a straight line 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 Is 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 in which the notch width changes linearly as shown in FIG. 52 or as curvilinearly as shown in FIG. The width may be gradually changed in the pair of notches 410N and 410N as shown in FIG. 54, or the width may be changed symmetrically in the pair of notches 410N and 410N as shown in FIG. As shown in FIG. 56, the pair of notches 410N and 410N may be rectangular grooves having a predetermined width (eg, within ± 15 ° with respect to the vertical direction) and aligned in a straight line. As shown in these modifications, the pair of notches 410N and 410N is preferably arranged in a straight line.

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

The IC card 600 shown in FIGS. 60 to 63 is a single IC card used for noncontact short distance wireless communication in the proximity RFID system, which is formed by heating and pressing after laminating the following components. As one of the ID-1 size (85.60 mm in width × 53.98 mm in length), it is formed on one horizontally long rectangular card.
(1) A partition plate 510 (partition member) formed into a sheet-like or film-like shape and having a horizontally long rectangular shape;
(2) It is longitudinally disposed so as to overlap each other in plan view to face the front main surface (the upper surface of the main body portion (bottom plate portion in FIG. 60) and the rear main surface (also the lower surface) in FIG. A first microwave front-side communication module 111 and a back-side communication module 121 (first and second communication members in the first set) having a shape;
(3) The second microwave front-side communication module 511 and the back-side communication, which are disposed in the longitudinal direction so as to overlap with the front-side main surface and the back-side main surface of the partition plate 510 respectively in plan view Module 521 (first and second communication members in the second set);
(4) An electrically insulating space which is disposed between the partition plate 510 and the front side communication modules 111 and 511 and between the partition plate 510 and the rear side communication modules 121 and 521, respectively, and corresponds to the thickness of itself between them. A horizontally long rectangular front side insulation sheet 12 and a rear side insulation sheet 22 (first and second insulation members) which form (a gap);
(5) Horizontally-long rectangular front side molding plate 13 and back side molding plate 223 which are respectively disposed outside the front side communication modules 111 and 511 and the rear side communication modules 121 and 521 and hold the respective modules 111, 51, 121 and 521 in position. (First and second molded members).

  The front side protective sheet 14 and the rear side protective sheet 24 (first and second protective members) are as described in the first embodiment. Further, the thickness of each component of the IC card 600 follows the description of the first embodiment and the second embodiment.

  Two pairs (two sets) of communication modules 111 and 121; 511 and 521 are rectangular shapes elongated in the vertical direction (up and down direction) of the IC card 600, and the first set of antennas 111A and 121A are twisted (in an S shape) The second set of antennas 511A and 521A is a flat antenna which spreads like a wing in the longitudinal direction, that is, the short side direction of the IC card 600 by linearly extending and then folding back. The IC chip main bodies 111M, 121M, 511M, and 521M are disposed substantially at the center in the vertical direction of the antennas 111A, 121A, and 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 molding plate 223, and then bent outward in the radial direction. The flange portion 510F is configured to be seated on the peripheral wall portion 223W, and functions as a stepped partition. Specifically, a bottom plate portion forming the main portion of the partition plate 510 and the peripheral surface portion 510C form a recessed space opened toward the front side (upper side in the figure), and the front side insulating sheet 12 and the front side are formed in the recessed space. The communication modules 111 and 511 are accommodated, and are closed by the front molding plate 13. On the other hand, the back side insulating sheet 22 and the back side communication module 121, 521 are accommodated in the internal space of the back side molding plate 223 (peripheral wall portion 223W) on the back side (downward in the figure) of the main body portion (bottom plate portion) of the partition plate 510 Ru.

  That is, the vertically long 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 the back side main surface of the partition plate 510 Opposite (in the figure, the lower surface), corresponding ones in plan view are arranged so as to overlap each other.

  In this embodiment, the front side communication module 111 and the rear side communication module 121 are both 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 They are arranged in an overlapping manner in a back-to-back state to constitute a pair (one set) of communication modules (see FIGS. 61 and 62). The first microwave M1 is set to, for example, 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) It is possible to transmit and receive between (see FIGS. 65 and 66).

  On the other hand, the front side communication module 511 and the back side communication module 521 are both for the second microwave 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. Are arranged overlapping each other to constitute a pair (one set) of communication modules (see FIGS. 61 and 62). The second microwave M2 is set, for example, in a frequency range of 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 of the reader / writer 2000 (M2) It is possible to transmit and receive to and from 2000A (M2) (see FIGS. 65 and 66).

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

  As shown in FIG. 65, communication is performed with the front communication module 111 on the front side (the left side in the drawing) of the IC card 600 in which the reader / writer 1000 (M1) fixedly disposed slides along the main surface (in the vertical direction in the drawing). When doing, the main surface on the front side (left side) of the partition plate 510 becomes the facing side main surface 510 fs, and the main surface on the back side (right side) becomes the non-facing side main surface 510 ns. The front communication module 111 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 communication module, and the reader / writer 1000 (M1) and the partition plate The back side communication module 121 which is not located between 510 and 510 is superimposed on the non-facing side main surface 510 ns of the partition plate 510 as the non-facing side communication module.

  Similarly, when the reader / writer 2000 (M2) fixedly arranged communicates with the front communication module 511 on the front side of the IC card 600 sliding along the main surface, the main surface of the front side (left side) of the partition plate 510 faces The side major surface 510 fs is obtained, and the backside (right side) major surface is the non-facing side major surface 510 ns. The front communication module 511 located 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 communication module, and the reader / writer 2000 (M2) and the partition plate The back side communication module 521 which is not located between 510 and 510 is superimposed on the non-facing side main surface 510 ns of the partition plate 510 as a non-facing side communication module.

  As shown in FIG. 66, communication is performed with the back side communication module 121 on the back side (right side in the figure) of the IC card 600 on which the reader / writer 1000 (M1) fixedly arranged slides along the main surface (vertically in the figure). When doing, the main surface on the back side (right side) of the partition plate 510 becomes the facing side main surface 510 fs, and the main surface on the front side (left side) becomes the non-facing side main surface 510 ns. 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 The front side communication module 111 not positioned between them and 510 is superimposed on the non-facing side main surface 510 ns of the partition plate 510 as the non-facing side communication module.

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

  Then, magnetic flux coupling is caused 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 and reception of the RFID electromagnetic wave signal by the first microwave M1, the IC card 600 further has a structure as described next.

  In FIG. 65 (or FIG. 66), when the IC card 600 is seen through from the overlapping direction, the antenna 111A (or 121A) of the facing communication module 111 (or 121) and the main body (bottom plate) of the partition plate 510 A through hole 510H1 is formed as an open area through which the through hole is removed so as to partially overlap the antenna 121A (or 111A) of the non-facing side communication module 121 (or 111) (FIG. 61, See Figure 62).

  Specifically, the through hole 510H1 shown in FIG. 65 (or FIG. 66) is a planar antenna 111A (a facing side communication module 111 (or 121) projected on the facing side main surface 510fs of the partition plate 510). Or a part of 121A) and a part of planar antenna 121A (or 111A) of non-facing side communication module 121 (or 111) projected on the non-facing side main surface 510ns at the same time One circular hole is formed (see FIGS. 61 and 62). The maximum hole diameter of the through hole 510H1, ie, the diameter D1 (in this embodiment, D1 ≦ 10 mm) is the wavelength λ1 (in this embodiment) of the first microwave M1 which is an RFID electromagnetic wave emitted from the reader / writer 1000 (M1). It is set smaller than λ1λ33 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 make it possible to separately transmit and receive the RFID electromagnetic wave signal by the second microwave M2, the IC card 600 further has a structure as described next.

  In FIG. 65 (or FIG. 66), when the IC card 600 is seen through from the overlapping direction, the antenna 511A (or 521A) of the facing communication module 511 (or 521) and the main body (bottom plate) of the partition plate 510 A through hole 510H2 is formed as an open area through which the through hole is removed so as to partially overlap the antenna 521A (or 511A) of the non-facing side communication module 521 (or 511) (FIG. 61, See Figure 62).

  Specifically, the through hole 510H2 shown in FIG. 65 (or FIG. 66) is a planar antenna 511A (facing side communication module 511 (or 521) projected on the facing side main surface 510 fs of the partition plate 510). Or a part of 521A) and a part of the planar antenna 521A (or 511A) of the non-facing side communication module 521 (or 511) projected on the non-facing side main surface 510ns at the same time One circular hole is formed (see FIGS. 61 and 62). The maximum hole diameter of the through hole 510H2, that is, the diameter D2 (D2 ≦ 6 mm in this embodiment) is the wavelength λ2 of the second microwave M2 (in this embodiment) which is the RFID electromagnetic wave emitted from the reader / writer 2000 (M2). It is set smaller than λ2λ12 cm) (D2 <λ2).

  As shown in FIGS. 61 and 62, when the IC card 600 is seen through from the stacking direction, the outer peripheral edge of the partition plate 510 is retracted and disposed inside the outline of the IC card 600. Further, the outer peripheral edges of the front side communication modules 111 and 511 and the rear side communication modules 121 and 521 are respectively retracted and disposed inside 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 overlaying direction, the front side insulation sheet 12 and the back side insulation sheet 22 have front side communication modules 111 and 511 and rear side communication corresponding to their outer peripheral edges. While being formed larger than the modules 121 and 521, the through holes 510H1 and 510H2 of the partition plate 510 are held (or covered) (see FIG. 63). In this embodiment, the size (area) of the front side insulating sheet 12 is slightly smaller than that of the rear side insulating sheet 22 (see FIG. 63).

  Referring back to FIGS. 65 and 66, by providing the through holes 510H1 in the partition plate 510, 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 becomes possible to prevent or suppress the phenomenon that a current is generated to generate a demagnetizing field. Further, the through holes 510H1 are generated by the facing side main surface 510fs and propagate through the dividing plate 510 to generate eddy currents leading to the non-facing side main surface 510ns, or for RFID by the first microwave M1 from the reader / writer 1000 (M1) It is also possible to inhibit the phenomenon that a magnetic field is generated on the non-facing side main surface 510 ns by the function of breaking the eddy current generated on the non-facing side main surface 510 ns around the outside of the partition plate 510 in the electromagnetic wave signal.

  Further, in FIG. 65 and FIG. 66, by providing the through holes 510H2 in the partition plate 510, a vortex is generated on the facing main surface 510fs of the partition plate 510 by the RFID electromagnetic wave signal by the second microwave M2 from the reader / writer 2000 (M2). It becomes possible to prevent or suppress the phenomenon that a current is generated to generate a demagnetizing field. Further, the through holes 510H2 are generated by the facing side main surface 510fs and propagate through the partition plate 510 to reach the non-facing side main surface 510 ns, or for the RFID by the second microwave M2 from the reader / writer 2000 (M2) It is also possible to inhibit the phenomenon that a magnetic field is generated on the non-facing side main surface 510 ns by the function of breaking the eddy current generated on the non-facing side main surface 510 ns around the outside of the partition plate 510 in the electromagnetic wave signal.

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

  By the way, when the IC card 600 is seen through from the overlaying direction in FIG. 63, the front side communication module 111 and the back side communication module 121 are inside the card outline of the horizontally long rectangular shape and its long side direction (namely, FIG. 63). Then, they are arranged offset with respect to each other in the left and right direction). Specifically, the offset amount d (M1) between the two communication modules 111 and 121, in other words, the distance d between the connection points of the antennas 111A and 121A of the communication modules 111 and 121 and the IC chip main bodies 111M and 121M M1), in other words, the separation distance d (M1) is provided in the card long side direction of the two IC chip main bodies 111M and 121M.

  Similarly, in FIG. 63, when the IC card 600 is seen through from the overlaying direction, the front side communication module 511 and the back side communication module 521 are inside the card outline of the horizontally long rectangular shape and its long side direction (namely, in FIG. 63). They are arranged offset to each other in the left and right direction). Specifically, the offset amount d (M2) 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 main bodies 511M and 521M M2), in other words, the separation distance d (M2) is provided in the card long side direction of the two IC chip main bodies 511M, 521M.

  Therefore, in FIG. 65 (or FIG. 66), the RFID electromagnetic wave signal by the first microwave M1 transmitted from the antenna 1000A (M1) of the reader / writer 1000 (M1) is the facing communication module 111 (or 121) and the facing side. Even if it passes through the insulating sheet 12 (or 22) and passes through the through-hole 510H1 of the partition plate 510, the diameter D1 is smaller than the wavelength λ1 and the passage itself is blocked and the non-facing side communication module 121 (or 111) It is difficult for the magnetic field required to generate the electromotive force of Even if part of the RFID electromagnetic wave signal passes through the through hole 510H1 and reaches the antenna 121A (or 111A) of the non-facing side communication module 121 (or 111), 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) receive / transmit timing by the difference in distance L '(M1)-L (M1) or the offset amount d (M1) described above. Since a difference is generated, malfunction due to poor response is avoided.

  Due to the presence of such a through hole 510H1, between the non-facing side communication module 121 and the reader / writer 1000 (M1) in FIG. 65, and in FIG. 66, the non-facing side communication module 111 and the reader / writer 1000 (M1) Magnetic flux coupling is less likely to occur between them. Therefore, the through hole 510H1 enables individual transmission and reception of the RFID electromagnetic wave signal by the first microwave M1, as shown in FIGS. Further, in FIG. 65 (or FIG. 66), in the peripheral surface portion 510C and the collar portion 510F of the partition plate 510, the RFID electromagnetic wave signal by the first microwave M1 transmitted from the reader / writer 1000 (M1) rotates around the peripheral wall 223W. It prevents or suppresses the occurrence of magnetic flux coupling with the non-facing side communication module 121 (or 111).

  Similarly, in FIG. 65 (or FIG. 66), the RFID electromagnetic wave signal by the second microwave M2 transmitted from the antenna 2000A (M2) of the reader / writer 2000 (M2) is the facing communication module 511 (or 521) and the facing Even if it passes through the side insulating sheet 12 (or 22) and passes through the through hole 510H2 of the partition plate 510, the diameter D2 is smaller than the wavelength λ 2 and the passage itself is blocked, and the non-facing side communication module 521 (or 511) It is difficult to reach the magnetic field required to generate an electromotive force in Even if part of the RFID electromagnetic wave signal passes through the through hole 510H2 and reaches the antenna 521A (or 511A) of the non-facing communication module 521 (or 511), antenna communication with the reader / writer 2000 (M2) The non-face-to-face communication module 521 (or 511) and the face-to-face communication module 511 (or 521) receive / transmit timing by the difference in distance L '(M2)-L (M2) or the offset amount d (M2) described above. Since a difference is generated, malfunction due to poor response is avoided.

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

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

  Here, the sixth embodiment of the individual transmission and reception mode of the RFID electromagnetic wave signal between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer is as follows. It will be. In the individual transmission / reception state diagram (FIGS. 65 to 67), 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 parallel individual transmission and 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>
By the magnetic flux coupling described in the following [A1] and [A2] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur, the facing side communication module That is, magnetic flux coupling occurs only between the front communication module 111 and the reader / writer 1000 (M1) and between the facing communication module, ie, the front communication module 511 and the reader / writer 2000 (M2), and the first and second microwaves Individual transmission and reception of RFID electromagnetic wave signals by M1 and M2 become possible.

[A1] When the 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, At the transmission / reception timing controlled by the data processing unit, 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 is received by the antenna 1000A (M1).
[A2] When the 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, At the transmission / reception timing controlled by the data processing unit, 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 is received by the antenna 2000A (M2).

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal 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 the eddy current generated from the facing main surface 510fs to the non-facing main surface 510 ns and the eddy current generated from the transmission signal around the outside of the partition 510 on the non facing main surface 510 ns is It is inhibited by the through holes 510H1 and 510H2.
[C] The passage of the transmission signal through the through holes 510H1 and 510H2 is blocked by the diameter D1 <the wavelength λ1 and the diameter D2 <the wavelength λ2, and the magnetic field necessary for electromotive force generation in the non-facing communication module, ie, the back communication module 121,521 is Hard to reach.
[D] The difference in antenna communication distance L '(M1)-L (M1), L' (M2)-L (M2) or the offset amount d (M1), d (M2) between the communication modules Since the facing communication module (here, the back communication module 121, 521) and the facing communication module (here, the front communication module 111, 511) cause a difference in transmission / reception timing, erroneous operation based on response failure is avoided. .

(Second mode) Simultaneous parallel individual transmission and 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>
By the magnetic flux coupling described in the following [B1] and [B2] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur, the facing side communication module That is, magnetic flux coupling occurs only between the back side communication module 121 and the reader / writer 1000 (M1) and between the facing side communication module, ie, the back side communication module 521 and the reader / writer 2000 (M2). Simultaneous and separate transmission and reception of RFID electromagnetic wave signals by M1 and M2 becomes possible.

[B1] When the 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, At the transmission / reception timing controlled by the data processing unit, 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 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, At the transmission / reception timing controlled by the data processing unit, 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 is received by the antenna 2000A (M2).

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal 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 the eddy current generated from the facing main surface 510fs to the non-facing main surface 510 ns and the eddy current generated from the transmission signal around the outside of the partition 510 on the non facing main surface 510 ns is It is inhibited by the through holes 510H1 and 510H2.
[C] The passage of the transmission signal through the through holes 510H1 and 510H2 is inhibited by the diameter D1 <wavelength λ1 and the diameter D2 <wavelength λ2, and the magnetic field necessary for electromotive force generation in the non-facing communication module, that is, the front communication module 111,511 is Hard to reach.
[D] The difference in antenna communication distance L '(M1)-L (M1), L' (M2)-L (M2) or the offset amount d (M1), d (M2) between the communication modules Since the facing communication module (here, the front communication module 111, 511) and the facing communication module (here, the back communication module 121, 521) cause a difference in transmission / reception timing, erroneous operation based on poor response is avoided. .

(Third Embodiment) 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 the front communication module 511 and the first Transmission / reception between the reader / writer 2000 (M2) and between the back side communication module 521 and the second reader / writer 4000 (M2) <Fig. 67>
A second reader / writer 3000 (M1) having a planar antenna 3000A (M1) capable of communicating in the same frequency range (920 MHz ± 50 MHz or 920 MHz ± 5%) as the antenna 1000A (M1) facing the back side communication module 121 ) Is arranged separately from the first reader / writer 1000 (M1) to form a first set, and a frequency range (2.45 GHz ± 130 MHz) similar to that of the antenna 2000A (M2) facing the back side communication module 521 Alternatively, a second reader / writer 4000 (M2) having a planar antenna 4000A (M2) capable of communicating at 2.45 GHz ± 5%) is disposed separately from the first reader / writer 2000 (M2), and the second set is It is a case to configure.

  Also in this case, a plurality of magnetic flux couplings described in the following [A1], [B1], [A2], and [B2] hold, and at least [a] and [b] among [a] to [d]. Of the front side communication module 111 and the first reader / writer 1000 (M1), and between 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 only between the back side communication module 521 and the second reader / writer 4000 (M2), and magnetic flux coupling occurs by the first and second microwaves M1 and M2 Simultaneous and individual transmission and reception of electromagnetic wave signals for RFID becomes possible.

[A1] Face-to-face communication module, that is, front-side communication module, 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. An electromotive force is generated at 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 transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M1) Be done.
[B1] A face-to-face communication module, that is, a back-side communication module, 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. An electromotive force is generated at 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 transmission / reception timing controlled by the data processing unit is received by the antenna 3000A (M1) Be done.

[A2] Face-to-face communication module, that is, front-side communication module, when a transmission signal (for example, a reading 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. An electromotive force is generated at 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 transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M2) Be done.
[B2] When the 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 at 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 transmission / reception timing controlled by the data processing unit is received by the antenna 4000A (M2) Be done.

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal having reached the facing main surface of the partition plate 510 is blocked or suppressed by the through holes 510H1 and 510H2.
[B] The magnetic field generation phenomenon based on the eddy current generated from the facing main surface to the non-facing main surface and the eddy current generated on the non-facing main surface by the transmission signal around the outside of the partition plate 510 is the through hole 510H1. , 510 H 2 inhibit.
[C] The passage of the transmission signal through the through holes 510H1 and 510H2 is inhibited by the diameter D1 <the wavelength λ1 and the diameter D2 <the wavelength λ2, and the magnetic field necessary for generating the electromotive force in the non-facing communication module hardly reaches.
[D] The difference in antenna communication distance L '(M1)-L (M1), L' (M2)-L (M2) or the offset amount d (M1), d (M2) between the communication modules Since the facing communication module and the facing communication module make a difference in transmission / reception timing, erroneous operation based on poor response is avoided.

Therefore, in the third mode shown in FIG.
Data read or write operation performed by the first reader / writer 1000 (M1) on the first data storage unit provided in the IC chip main body 111M of the front side communication module 111 based on the above [A1].
Data read or write operation performed by the second reader / writer 3000 (M1) on the second data storage unit provided in the IC chip main body 121M of the back side communication module 121 based on the above [B1].
Data reading or writing operation performed by the first reader / writer 2000 (M2) on the first data storage unit provided in the IC chip main body 511M of the front side communication module 511 based on the above [A2].
Data read or write operation performed by the second reader / writer 4000 (M2) on the second data storage unit provided in the IC chip main body 521M of the back side communication module 521 based on the above [B2].
Can be processed simultaneously in parallel.

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

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

  At this time, the first set of first and second reader / writers 1000 (M1) and 3000 (M1) have the same frequency range (920 MHz. +-. 50 MHz or 920 MHz. +-. 5) for front side communication module 111 and back side communication module 121. And transmit the same output signal, and the antenna communication distances L (M1) and L '(M1) between the corresponding communication modules 111 and 121 and the reader / writer 1000 (M1) and 3000 (M1) are the same. It is good. Similarly, the second set of first and second reader / writers 2000 (M2) and 4000 (M2) have the same frequency range (2.45 GHz ± 130 MHz or 2.. The antenna communication distance L (M2), L '(M2) between the corresponding communication module 511, 521 and the reader / writer 2000 (M2), 4000 (M2) while transmitting the signal of the same output at 45 GHz ± 5%) ) May be identical.

(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 an IC card, FIG. 69 is a partially broken plan view, FIG. 70 is a partially broken bottom view, and FIG. 71 is a sectional view taken along line LXXI-LXXI in FIG. These are enlarged perspective views of a partition plate. In the IC card 700 of the seventh embodiment, the number and arrangement of communication modules in the IC card 400 of the fourth embodiment are changed, and the configuration of the partition plate is also partially changed.

The IC card 700 shown in FIG. 68 to FIG. 71 is a single IC card used for noncontact short distance wireless communication in the proximity type RFID system, which is formed by heating and pressing after laminating each component shown below As one of the ID-1 size (85.60 mm in width × 53.98 mm in length), it is formed on one horizontally long rectangular card.
(1) A flat sheet-like or film-like partition plate 610 (a partition member) formed in a horizontally long rectangular shape;
(2) A microwave front-side communication module 511 and a back-side communication module 521, which are disposed in the longitudinal direction so as to overlap with each other in plan view so as to face the front side main surface and back side main surface of partition plate 610 (First and second communication members in the first set);
(3) A short-wave front-side communication module 311 and a rear-side communication module 321 (second set) arranged so as to be opposed to the front-side main surface and back-side main surface of the partition plate 610 and overlapping each other in plan view First and second communication members in
(4) An electrically insulating space which is 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, respectively, and corresponds to the thickness of itself between them. A horizontally long rectangular front side insulation sheet 12 and a rear side insulation sheet 22 (first and second insulation members) which form (a gap);
(5) Horizontally-long rectangular front side molding plate 13 and rear side molding plate 23 which are disposed outside the front side communication modules 311 and 511 and the rear side communication modules 321 and 521 and hold the respective modules 311, 511, 321 and 521 in position. (First and second molded members).

  The front side protective sheet 14 and the rear side 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 also substantially the same as that described in the first embodiment.

  The partition plate 610 is located substantially at the center in the thickness direction of the IC card 700 and is made of a flat aluminum foil, and is formed of a linear groove (slit 610S described later) extending in the short side direction. It is separated (divided) into (partition member) and the right side partition plate 610R (partition member). The basic form and function of the partition plate 610 is the same as that of 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 is a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 700, and each antenna 511A , 521A are planar antennas for microwaves that extend like wings in the longitudinal direction, that is, the short side direction of the IC card 700 by linearly extending and then folding back. The IC chip main bodies 511M and 521M are disposed substantially in the center in the longitudinal direction of the antennas 511A and 521A.

  In this embodiment, the front side communication module 511 and the rear side communication module 521 are both 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. The two communication modules are arranged in an overlapping manner to constitute a pair (one set) of communication modules (see FIGS. 69 and 70). The microwave M is set, for example, in a frequency range of 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 (reader / writer 1000 (M) M) can be transmitted and received (see FIGS. 73 and 74).

  On the other hand, the second set of communication modules 311 and 321 is a rectangular shape elongated in the lateral direction (left and right direction) of the IC card 700, and each antenna 311A and 321A has a rectangular spiral multiple times over the entire surface of the IC card 700 It is a loop-shaped (or coil-shaped) antenna for short waves (four times in the figure). The IC chip main bodies 311M and 321M are disposed at the corners of one of the antennas 311A and 321A in the form of a rectangular loop.

  In this embodiment, the front side communication module 311 and the rear side communication module 321 are both for short waves 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 manner at substantially the same position in plan view to form a pair (one set) of communication modules (see FIGS. 69 and 70). The pair of IC chip main bodies 311M and 321M are connected to the corresponding rectangular loop antennas 311A and 321A at corner portions that are diagonal positions in plan view. The short wave S is set, for example, in a frequency range of 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), and the antenna 311A, 321A of the pair of communication modules 311, 321 and the antenna 2000A of the reader / writer 2000 (S) Transmission and reception can be performed with (S) (see FIGS. 73 and 74).

  Thus, the IC card 700 of the seventh embodiment is described in the communication modules 511 and 521 for microwaves described in the sixth embodiment (see FIG. 60) and in the fourth embodiment (see FIG. 31). The communication module includes two pairs (two sets) of communication modules consisting of short wave communication modules 311 and 321. Specifically, in FIG. 69 (or FIG. 70), the communication module 511 (or 521) for microwaves is provided inside the rectangular loop antenna 311A (or 321A) that constitutes the communication module 311 (or 321) for short waves. Is placed. That is, in the seventh embodiment, among the two pairs (two sets) of communication modules described in the sixth embodiment, the communication modules 111 and 121 for the first microwave are replaced with the communication modules 311 and 321 for the short wave. It can also be regarded as being In the seventh and subsequent embodiments, (M) at the end of the code indicates for microwave M and (S) indicates for short wave S, respectively.

  As shown in FIG. 73, communication is performed with the front communication module 511 on the front side (the left side in the drawing) of the IC card 700 in which the reader / writer 1000 (M) fixed and disposed slides along the main surface (in the vertical direction in the drawing). When doing, the main surfaces on the front side (left side) of the partition plates 610L and 610R (610) become the facing side main surfaces 610Lfs and 610Rfs, and the main surfaces on the back side (right side) become the non-facing side main surfaces 610Lns and 610Rns. The front side communication module 511 located between the reader / writer 1000 (M) and the partition plates 610L, 610R (610) is overlapped with the facing main surfaces 610Lfs, 610Rfs of the partition plates 610L, 610R (610) as the facing side communication module. And the back side communication module 521 not positioned between the reader / writer 1000 (M) and the partition plates 610L and 610R (610) as the non-facing side communication module, the non-facing side main surface of the partitioning plates 610L and 610R (610) 610 Lns and 610 Rns are superimposed.

  Similarly, when communicating with the front side communication module 311 on the front side of the IC card 700 on which the reader / writer 2000 (S) fixedly arranged slides along the main surface, the front side (left side) of the partition plates 610L and 610R (610) The main surface of the rear surface is the facing main surface 610Lfs, 610Rfs, and the main surface on the back side (right side) is the non-facing surface main surface 610Lns, 610Rns. The front side communication module 311 located between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) is overlapped with the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as the facing side communication module. And the back side communication module 321 not positioned between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) as the non-facing side communication module, the non-facing side main surface of the partitioning plates 610L and 610R (610) 610 Lns and 610 Rns are superimposed.

  As shown in FIG. 74, communication is performed with the back side communication module 521 on the back side (right side in the figure) of the IC card 700 on which the reader / writer 1000 (M) fixedly arranged slides along the main surface (vertically in the figure). When doing, the main surfaces on the back side (right side) of the partition plates 610L, 610R (610) become the facing side main surfaces 610Lfs, 610Rfs, and the main surfaces on the front side (left side) become the nonfacing 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 with the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as a facing side communication module. And the front side communication module 511 not positioned between the reader / writer 1000 (M) and the partition plate 610L, 610R (610) as the non-facing side communication module, the non-facing side main surface of the partition plate 610L, 610R (610) 610 Lns and 610 Rns are superimposed.

  Similarly, when the reader / writer 2000 (S) fixedly disposed communicates with the back side communication module 321 on the back side of the IC card 700 sliding along the main surface, the main surface on the back side of the partition plates 610L, 610R (610) The facing main surfaces 610Lfs, 610Rfs are the main surface on the front side, and the non-facing side main surfaces 610Lns, 610Rns. The back side communication module 321 located between the reader / writer 2000 (S) and the partition plates 610L and 610R (610) is overlapped with the facing main surfaces 610Lfs and 610Rfs of the partition plates 610L and 610R (610) as a facing side communication module. And the front side communication module 311 not positioned between the reader / writer 2000 (S) and the partition plate 610L, 610R (610) as the non-facing side communication module, the non-facing side main surface of the partition plate 610L, 610R (610) 610 Lns and 610 Rns are superimposed.

  Then, magnetic flux coupling is caused only between the antenna 511A of the facing side communication module 511 of FIG. 73 (or the antenna 521A of the facing side communication module 521 of FIG. 74) and the antenna 1000A (M) of the reader / writer 1000 (M). In order to enable individual transmission and reception of the RFID electromagnetic wave signal by the microwave M, the IC card 700 further has a structure as described next.

  In FIG. 73 (or FIG. 74), when the IC card 700 is seen through from the overlapping direction, the antenna 511A (or 521A) of the facing side communication module 511 (or 521) and the non-facing side communication module 521 A through hole 610H as an open area is formed as an open area, which is removed through in a hole shape so as to partially overlap with the antenna 521A (or 511A) of (or 511) (see FIGS. 69 and 70).

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

  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 allow the short wave S to individually transmit and receive the RFID electromagnetic wave signal, the IC card 700 further has a structure as described below.

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

  Specifically, the slit 610S shown in FIG. 73 (or FIG. 74) is a loop of the facing communication module 311 (or 321) projected on the facing main surfaces 610Lfs, 610Rfs of the partition plates 610L, 610R. A part of the antenna 311A (or 321A) and a part of the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) projected on the non-facing side main surface 610Lns, 610Rns at two places simultaneously 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 the wavelength λS of the short wave which is the RFID electromagnetic wave emitted from the reader / writer 2000 (S). It is set smaller than λSλ22 m) (W <λS).

  As shown in FIGS. 69 and 70, when the IC card 700 is seen through from the overlaying direction, the outer peripheral edge of the partition plates 610L and 610R (610) is retracted inside the outline of the IC card 700 and arranged. Further, the outer peripheral edges of the front side communication modules 511 and 311 and the rear side communication modules 521 and 321 are respectively retracted and disposed inside 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 overlaying direction, the front side insulation sheet 12 and the back side insulation sheet 22 have front side communication modules 511, 311 and rear side communication corresponding to their respective outer peripheral edges. While being formed larger than the modules 521 and 321, the through holes 610H and the slits 610S of the partition plates 610L and 610R (610) are closed (or covered) (see FIG. 71). In this embodiment, both the front side insulating sheet 12 and the rear side insulating sheet 22 have the same shape and size as the combination of the partition plates 610L, 610R and the slits 610S (see FIG. 68).

  Referring back to FIGS. 73 and 74, by providing the through holes 610H in the partition plate 610R (610), the electromagnetic wave signal for RFID by the microwave M from the reader / writer 1000 (M) is applied to the facing main surface 610Rfs of the partition plate 610R. It becomes possible to prevent or suppress a phenomenon in which an eddy current is generated to generate a demagnetizing field. Further, the through holes 610H are generated by the facing side main surface 610Rfs and propagate the partition plate 610R to reach the non-facing side main surface 610Rns, and the electromagnetic wave signal for RFID by the microwave M from the reader / writer 1000 (M) It is also possible to inhibit the phenomenon that a magnetic field is generated on the non-facing side main surface 610Rns by the function of turning around the outside of the partition plate 610R and separating the eddy current generated on the non-facing side main surface 610Rns.

  Furthermore, in FIG. 73 and FIG. 74, by providing the slit 610S in the partition plate 610, the electromagnetic wave signal for RFID by the short wave S from the reader / writer 2000 (S) swirls on the facing main surfaces 610Lfs, 610Rfs of the partition plates 610L, 610R. It becomes possible to prevent or suppress the phenomenon that a current is generated to generate a demagnetizing field. Further, the slits 610S are generated by the facing side main surfaces 610Lfs, 610Rfs and propagate through the partition plates 610L, 610R to cause eddy currents leading to the non-facing side main surfaces 610Lns, 610Rns, or by the short wave S from the reader / writer 2000 (S). Of the electromagnetic wave signals for RFID, it has a function of turning around the outside of the partition plates 610L and 610R to separate the eddy current generated on the non-facing side main surfaces 610Lns and 610Rns, thereby inhibiting the phenomenon of generating a magnetic field on the non-facing side main surfaces 610Lns and 610Rns It can also be done.

  Thus, the through holes 610H and the slits 610S complement the damping or shielding action of the partition plate 610 against the electromagnetic waves. That is, by 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, the RFIDs from the reader / writer 1000 (M) and 2000 (S). A function of receiving an electromagnetic wave signal and transmitting a response signal to it to the reader / writer 1000 (M) and 2000 (S) is added. Therefore, the through holes 610H and the slits 610S enable individual transmission and reception of the RFID electromagnetic wave signal by the microwave M and the short wave S shown in FIGS. 73 and 74.

  By the way, when the IC card 700 is seen through from the overlaying direction in FIG. 71, the front side communication module 511 and the back side communication module 521 are inside the card outline of the horizontally long rectangular shape and its long side direction (namely, FIG. 71). Then, they are arranged offset with respect to each other in the left and right direction). 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 main bodies 511M and 521M M), in other words, the separation distance d (M) is provided in the card long side direction of both the IC chip main bodies 511M, 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 the facing side communication module 511 (or 521) and the facing side insulating sheet Even if it passes through 12 (or 22) and passes through the through-hole 610H of the partition plate 610R, the diameter D is smaller than the wavelength λ M so that the passage itself is blocked, causing the non-facing communication module 521 (or 511) to The magnetic field required to generate power is difficult to reach. Even if a part of the RFID electromagnetic wave signal passes through the through hole 610H and reaches the antenna 521A (or 511A) of the non-facing side communication module 521 (or 511), the antenna communication with the reader / writer 1000 (M) The non-face-to-face communication module 521 (or 511) and the face-to-face communication module 511 (or 521) receive / transmit timing by the difference in distance L '(M)-L (M) or the offset amount d (M) described above. Since a difference is generated, malfunction due to poor response is avoided.

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

  In FIG. 71, when the IC card 700 is seen through from the overlapping direction again, the front side communication module 311 and the back side communication module 321 are inside the card outline of the horizontally long rectangular shape and its long side direction (ie, horizontal direction, in FIG. 71). They are arranged offset to each other in the left and right direction). Specifically, an offset amount d (S) between the two communication modules 311 and 321, in other words, a distance d between 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 S), in other words, the separation distance d (S) is provided in the card long side direction of both IC chip main bodies 311M, 321M.

  Therefore, in FIG. 73 (or FIG. 74), the RFID electromagnetic wave signal by the short wave S transmitted from the antenna 2000A (S) of the reader / writer 2000 (S) is the facing communication module 311 (or 321) and the facing insulation sheet 12 Even if it is transmitted through (or 22) and passes through the slit 610S of the partition plate 610, the passage itself is blocked because the maximum transverse width W is smaller than the wavelength λS, and the occurrence in the non-facing communication module 321 (or 311) occurs. The magnetic field required to generate power is difficult to reach. Even if a part of the RFID electromagnetic wave signal passes through the slit 610S and reaches the antenna 321A (or 311A) of the non-facing side communication module 321 (or 311), the antenna communication distance with the reader / writer 2000 (S) Between the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321) due to the difference L '(S)-L (S) or the offset amount d (S) described above. Therefore, false operation based on poor response is avoided.

  Furthermore, in FIGS. 69 and 71, the slits 610S are at unequal positions deviated (that is, shifted) from the center in the long 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. Each intersects with the two long sides of the card outline. Specifically, the width center CS of the slit 610S is provided offset from the center CA in the long axis direction of the loop antennas 311A and 321A by the 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 RFID electromagnetic wave signal by the short wave S from the reader / writer 2000 (S). When magnetic flux passes or moves in the above, electromotive force is generated in the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) by electromagnetic induction. On the other hand, when viewed from the reader / writer 2000 (S) side, the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) is covered with the partition plates 610L and 610R except for the slits 610S. The 610S is provided to cross the long side of the card at an uneven position deviated (shifted) from the center in the long axis direction of the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) There is. Therefore, even when the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) is in the magnetic field of the RFID electromagnetic wave signal by the short wave S from the reader / writer 2000 (S), the magnetic flux is uneven Since it passes (moves), it does not generate an electromotive force necessary to drive the IC chip main body 321M (or 311M) to transmit (reply) to the reader / writer 2000 (S).

  Due to the presence of such a slit 610S, in FIG. 73, between the non-facing side communication module 321 and the reader / writer 2000 (S), and in FIG. 74, between the non-facing side 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 FIG. 73 and FIG.

  Thus, in the seventh embodiment, through holes 610H (diameter D) for microwaves and slits 610S (crossing width W) for short waves are formed in the partition plate 610 (see FIG. 72), and the IC card 700 It functions as a microwave and short wave dual use type.

  Here, the seventh embodiment of the individual transmission and reception mode of the RFID electromagnetic wave signal 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 as follows. It will be. In the individual transmission / reception state diagrams (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 parallel individual transmission and 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>
By the magnetic flux coupling described in the following [A1] and [A2] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur, the facing side communication module That is, magnetic flux coupling occurs only between the front communication module 511 and the reader / writer 1000 (M) and between the facing communication module, ie, the front communication module 311 and the reader / writer 2000 (S). Individual transmission and reception of electromagnetic wave signals for RFID become possible.

[A1] When a transmission signal (for example, a read command signal) by 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 communication module 511, and data processing 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 transmission / reception timing controlled by the unit.
[A2] When the 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 communication module 311, and the data processor The antenna 2000A (S) receives 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.

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal that has reached the facing main surfaces 610Lfs, 610Rfs of the partition plate 610 is blocked or suppressed by the through holes 610H and the slits 610S.
[B] Eddy current that propagates from the facing main surface 610Lfs, 610Rfs to the non-facing main surface 610Lns, 610Rns, or an eddy current that is generated on the non-facing side main surface 610Lfs, 610Rfs by a transmission signal that wraps around the outside of the partition plate 610 The magnetic field generation phenomenon based on is inhibited by the through hole 610H and the slit 610S.
[C] Diameter D <wavelength λM, crossing width W <wavelength λS inhibit passage of transmission signal through holes 610H and slits 610S, and is necessary for generating electromotive force in the non-facing communication module, that is, the rear communication module 521, 321 The magnetic field is hard to reach.
[D] The difference in antenna communication distance L '(M)-L (M), L' (S)-L (S) or the offset amount d (M) between communication modules, d (S) Since the facing communication module (here, the back communication module 521, 321) and the facing communication module (here, the front communication module 511, 311) cause a difference in transmission / reception timing, erroneous operation based on poor response is avoided. .
[E] Since the amount of 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 mode) Simultaneous parallel individual transmission and 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>
The magnetic flux coupling described in the following [B1] and [B2] is established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur, so that the facing communication module That is, magnetic flux coupling occurs only between the back side communication module 521 and the reader / writer 1000 (M), and between the facing side communication module, ie, the back side communication module 321 and the reader / writer 2000 (S). Simultaneous and individual transmission and reception of electromagnetic wave signals for RFID becomes possible.

[B1] When the 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 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 521) transmitted from the antenna 521A at transmission / reception timing controlled by the unit.
[B2] When the 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 processor The antenna 2000A (M2) receives 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.

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal that has reached the facing main surfaces 610Lfs, 610Rfs of the partition plate 610 is blocked or suppressed by the through holes 610H and the slits 610S.
[B] Eddy current that propagates from the facing main surface 610Lfs, 610Rfs to the non-facing main surface 610Lns, 610Rns, or an eddy current that is generated on the non-facing side main surface 610Lfs, 610Rfs by a transmission signal that wraps around the outside of the partition plate 610 The magnetic field generation phenomenon based on is inhibited by the through hole 610H and the slit 610S.
[C] Diameter D <wavelength λM, crossing width W <wavelength λS inhibit passage of the transmission signal through the through holes 610H and slits 610S and is necessary for generating electromotive force in the non-facing communication module, that is, the front communication module 511, 311 The magnetic field is hard to reach.
[D] The difference in antenna communication distance L '(M)-L (M), L' (S)-L (S) or the offset amount d (M) between communication modules, d (S) Since the facing communication module (here, the front communication module 511, 311) and the facing communication module (here, the back communication module 521, 321) cause a difference in transmission / reception timing, erroneous operation based on poor response is avoided. .
[E] Since the amount of bias LC is provided in the slit 610S, the loop antenna 311A of the non-facing side communication module 311 does not generate an electromotive force.

(Third Embodiment) 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 the front side communication module 311 and the first Simultaneous transmission / reception between the reader / writer 2000 (S) of the same 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 ) Is arranged separately from the first reader / writer 1000 (M) to form a first set, and the same frequency range (2.45 GHz ± 130 MHz) as the antenna 2000A (S) facing the back side communication module 321 Alternatively, a second reader / writer 4000 (S) having a loop antenna 4000A (S) that can communicate at 2.45 GHz ± 5%) is disposed separately from the first reader / writer 2000 (S) to perform the second set. It is a case to configure.

  Also in this case, a plurality of magnetic flux couplings described in the following [A1], [B1], [A2], and [B2] hold, and at least [a] and [b] among [a] to [e]. Of the front side communication module 511 and the first reader / writer 1000 (M), and between 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 side communication module 321 and the second reader / writer 4000 (S), magnetic flux coupling occurs, and the electromagnetic wave signal for RFID by the microwave M and the short wave S Simultaneous individual transmission and reception is possible.

[A1] When the 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 transmission / reception timing controlled by the data processing unit is received by the antenna 1000A (M). .
[B1] When the 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 facing communication module, that is, the back communication module 521 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 transmission / reception timing controlled by the data processing unit is received by the antenna 3000A (M). .

[A2] When the 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, the facing communication module, that is, the front communication module 311 Power is generated, and 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 transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (S).
[B2] When the 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 facing communication module, that is, the back communication module 321 Power is generated, and 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 transmission / reception timing controlled by the data processing unit is received by the antenna 4000A (S).

[A] The generation phenomenon of the eddy current and the demagnetizing field by the transmission signal that has reached the facing main surface of the partition plate 610 is prevented or suppressed by the through hole 610H and the slit 610S.
[B] The magnetic field generation phenomenon based on the eddy current generated on the non-facing side main surface by the eddy current propagating from the facing side main surface to the non-facing side main surface and the eddy current generated on the non-facing side main surface , Slit 610S.
[C] The passage of the transmission signal through the through hole 610H and the slit 610S is inhibited by the diameter D <wavelength λM and the transverse width W <wavelength λS, and the magnetic field necessary for generating the electromotive force in the non-facing communication module hardly reaches.
[D] The difference in antenna communication distance L '(M)-L (M), L' (S)-L (S) or the offset amount d (M) between communication modules, d (S) Since the facing communication module and the facing communication module make a difference in transmission / reception timing, erroneous operation based on poor response is avoided.
[E] Since the amount of deviation LC is provided in the slit 610S, the loop antenna of the non-facing side communication module does not generate an electromotive force.

Therefore, in the third mode shown in FIG.
Data read or write operation performed by the first reader / writer 1000 (M) on the first data storage unit provided in the IC chip main body 511M of the front side communication module 511 based on the above [A1].
Data reading or writing operation performed by the second reader / writer 3000 (M) on the second data storage unit provided in the IC chip main body 521M of the back side communication module 521 based on the above [B1].
Data read or write operation performed by the first reader / writer 2000 (S) on the first data storage unit provided in the IC chip main body 311M of the front side communication module 311 based on the above [A2].
Data read or write operation performed by the second reader / writer 4000 (S) to the second data storage unit provided in the IC chip main body 321M of the back side communication module 321 based on the above [B2].
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 number of simultaneously operating 4000 (S) can be set arbitrarily in the range of 2 to 4, and the combination can be freely selected.

  Thus, in the seventh embodiment, two (two) reader / writers 1000 (M), 3000 (M), 2000 (S), and 4000 (S) are used. Since data access (reading or writing) can be simultaneously performed to each data storage unit of the pair (two sets) of communication modules 511, 521; 311, 321, expansion of data capacity and speeding up of data processing can be achieved. .

  At this time, the first set of first and second reader / writers 1000 (M) and 3000 (M) have the same frequency range (2.45 GHz ± 130 MHz or 2) with respect to the front side communication module 511 and the rear side communication module 521. The antenna communication distance L (M), L '(L') between the corresponding communication module 511, 521 and the reader / writer 1000 (M), 3000 (M) while transmitting the signal of the same output at 45 GHz ± 5%). M) may be identical. Similarly, the second set of first and second reader / writers 2000 (S) and 4000 (S) have the same frequency range (13.56 MHz ± 0.68 MHz or less for front side communication module 311 and rear side communication module 321). The antenna communication distance L (S), L 'between the corresponding communication module 311, 321 and the reader / writer 2000 (S), 4000 (S) while transmitting the signal of the same output at 13.56 MHz ± 5%) (S) may be identical.

  Further, as shown in FIG. 71, in the present embodiment, the short wave wiring board 311S and the microwave wiring board 511S are laminated and formed, but in the short wave wiring board 311S, the loop antenna 311A is used. If the inside is partially removed to form a recess and the removed wiring board 511S is embedded in the removed recess space, thinning of the IC card 700 can be achieved. The same applies to the relationship between the short wave wiring board 321S and the microwave wiring board 521S.

(Eighth embodiment)
An eighth embodiment of the IC card according to the present invention is shown in FIG. 76 to FIG. 76 is an exploded perspective view schematically showing an 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 of FIG. In the IC card 800 of the eighth embodiment, the number of communication modules arranged in the IC card 700 of the seventh embodiment is changed, and the form of the partition plate is also changed in part.

The IC card 800 shown in FIG. 76 to FIG. 79 is a single IC card used for noncontact short distance wireless communication in the proximity RFID system, which is formed by heating and pressing after laminating the following components. As one of the ID-1 size (85.60 mm in width × 53.98 mm in length), it is formed on one horizontally long rectangular card.
(1) A flat sheet-like or film-like partition plate 310 (a partition member) formed in a horizontally long rectangular shape;
(2) A short-wave front-side communication module 311 and a rear-side communication module 321 (first and second communication modules) which are disposed to be opposed to the front and back main surfaces of the partition plate 310 and overlap each other in plan view Second communication member);
(3) A microwave front-side communication module 611 (third communication member) which is disposed in the vertical direction so as to face only the front-side main surface of the partition plate 310 and overlap in plan view so as to overlap in a plan view;
(4) An electrically insulating space (a gap between the partition plate 310 and the front side communication module 311, 611 and between the partition plate 310 and the back side communication module 321 corresponding to its own thickness) Oblong rectangular front side insulation sheet 12 and back side insulation sheet 22 (first and second insulation members) to form
(5) Horizontally-long rectangular front side molding plates 13 and rear side molding plates 23 (first and second rear side molding plates 23 arranged respectively on the outside of the front side communication modules 311, 611 and the rear side communication modules 321 and holding the modules 311, 611, 321 in position) Second molded member).

  The front side protective sheet 14 and the rear side protective sheet 24 (first and second protective members) are as described in the first embodiment. The thickness of each component of the IC card 800 is also substantially the same as described in the first embodiment.

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

  Among the three communication modules 311, 321, 611, the communication modules 311, 321 forming a pair are rectangular shapes elongated in the lateral direction (left and right direction) of the IC card 800, and each of the antennas 311A, 321A is an IC card 800. This is a short wave loop-shaped (or coil-shaped) antenna which is wound in a rectangular spiral shape a plurality of times (four times in the drawing) over substantially the entire surface. The IC chip main bodies 311M and 321M are disposed at the corners of one of the antennas 311A and 321A in the form of a rectangular loop.

  In this embodiment, as in the seventh embodiment, the front side communication module 311 and the rear 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. The rectangular ones having the same outer shape are disposed in an overlapping manner in a back-to-back state at substantially the same position in plan view to form a pair (one set) of communication modules (see FIGS. 77 and 78). The pair of IC chip main bodies 311M and 321M are connected to the corresponding rectangular loop antennas 311A and 321A at corner portions that are diagonal positions in plan view. The short wave S is set, for example, in a frequency range of 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%), and the antenna 311A, 321A of the pair of communication modules 311, 321 and the antenna 1000A of the reader / writer 1000 (S) Transmission and reception can be performed with (S) (see FIGS. 80 and 81).

  On the other hand, the single front side communication module 611 has a rectangular shape elongated in the vertical direction (vertical direction) of the IC card 800, and the antenna 611A extends in a straight line and then folded back, thereby the longitudinal direction, ie, the short side direction of the IC card 800. Is a planar antenna for microwaves spreading like a wing. An IC chip main body 611M is disposed substantially at the center in the vertical direction of the antenna 611A.

  In this embodiment, the front communication module 611 is used for microwaves set to a single frequency range independent of the frequency range of the short wave S, for example, the 2.45 GHz ± 130 MHz (or 2.45 GHz ± 5%) frequency range. It is possible to transmit and receive 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).

  Thus, the IC card 800 according to the eighth embodiment has a single unit for microwaves in addition to the pair of communication modules 311 and 321 for short waves described in the fourth embodiment (see FIG. 31). A communication module 611 is provided. Specifically, in FIG. 77 (or FIG. 78), a single communication module 611 for microwaves is disposed inside the rectangular loop antenna 311A that configures one communication module 311 for short waves. That is, in the eighth embodiment, it is assumed that one communication module 521 for microwaves is eliminated from the two pairs (two pairs) of communication modules described in the seventh embodiment (see FIG. 68). It can also be done.

  As shown in FIG. 80, communication is performed with the front communication module 311 on the front side (the left side in the drawing) of the IC card 800 in which the reader / writer 1000 (S) fixedly disposed slides along the main surface (in the vertical direction in the drawing). When doing, the main surfaces on the front side (left side) of the partition plates 310L and 310R (310) become the facing side main surfaces 310Lfs and 310Rfs, and the main surfaces on the back side (right side) become the non-facing side main surfaces 310Lns and 310Rns. The front communication module 311 located between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) is overlapped with the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R (310) as a facing communication module. And the back side communication module 321 not positioned between the reader / writer 1000 (S) and the partition plate 310L, 310R (310) as the non-facing side communication module, the non-facing side main surface of the partition plate 310L, 310R (310) 310 Lns and 310 Rns are superimposed.

  As shown in FIG. 81, communication is performed with the back side communication module 321 on the back side (the right side in the figure) of the IC card 800 on which the reader / writer 1000 (S) fixedly arranged slides along the main surface (vertically in the figure). When doing, the main surface on the back side (right side) of the partition plate 310L, 310R (310) becomes the facing side main surface 310Lfs, 310Rfs, and the main surface on the front side (left side) becomes the nonfacing side main surface 310Lns, 310Rns. The back side communication module 321 located between the reader / writer 1000 (S) and the partition plates 310L and 310R (310) is overlapped with the facing main surfaces 310Lfs and 310Rfs of the partition plates 310L and 310R (310) as a facing side communication module. And the front side communication module 311 not positioned between the reader / writer 1000 (S) and the partition plate 310L, 310R (310) as the non-facing side communication module, the non-facing side main surface of the partition plate 310L, 310R (310) 310 Lns and 310 Rns are superimposed.

  As shown in FIG. 82, when the IC card 800 slides along the main surface (in the vertical direction 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. It communicates with the reader / writer 5000 (M) alone (that is, in a form independent of the pair of communication modules 311 and 321).

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

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

  Specifically, the slit 310S shown in FIG. 80 (or FIG. 81) is a loop of the facing communication module 311 (or 321) projected on the facing main surfaces 310Lfs, 310Rfs of the partition plates 310L, 310R. A part of the antenna 311A (or 321A) and a part of the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) projected on the non-facing side main surface 310Lns, 310Rns simultaneously in two places In this state, the single slit 310S is formed (see FIGS. 77 and 78). 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 the wavelength λS of the short wave which is the RFID electromagnetic wave emitted from the reader / writer 1000 (S). It is set smaller than λSλ22 m) (W <λS).

  As shown in FIGS. 77 and 78, when the IC card 800 is seen through from the overlaying direction, the outer peripheral edge of the partition plates 310L and 310R (310) is retracted inside the outline of the IC card 800 and arranged. In addition, the outer peripheral edges of the front side communication module 311 and the rear side communication module 321 are respectively retracted and disposed inside 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 overlaying direction, the front side insulation sheet 12 and the back side insulation sheet 22 have a front side communication module 311 and a rear side communication module 321 corresponding to their outer peripheral edges. While being formed larger, the slit 310S of the partition plates 310L and 310R (310) is held in a closed (or covered) state (see FIG. 79). In this embodiment, both the front side insulating sheet 12 and the rear side insulating sheet 22 have the same shape and size as the combination of the partition plates 310L and 310R and the slits 310S (see FIG. 76).

  Further, in FIG. 80 and FIG. 81, by providing the slit 310S in the partition plate 310, the electromagnetic wave signal for RFID by the short wave S from the reader / writer 1000 (S) swirls on the facing main surfaces 310Lfs, 310Rfs of the partition plates 310L, 310R. It becomes possible to prevent or suppress the phenomenon that a current is generated to generate a demagnetizing field. Further, the slits 310S are generated by the facing side main surfaces 310Lfs, 310Rfs and propagate through the partition plates 310L, 310R to cause eddy currents leading to the non-facing side main surfaces 310Lns, 310Rns, or by the short wave S from the reader / writer 1000 (S). Of the electromagnetic wave signals for RFID, the function of dividing the eddy currents generated on the non-facing side main surfaces 310Lns and 310Rns around the outside of the partition plates 310L and 310R blocks the phenomenon of generating a magnetic field on the non-facing side main surfaces 310Lns and 310Rns It can also be done.

  In this way, the slits 310S complement the damping or shielding action of the partition plate 310 against electromagnetic waves. That is, only the facing communication module 311 in FIG. 80 and only the facing communication module 321 in FIG. 81 receive the RFID electromagnetic wave signal from the reader / writer 1000 (S) by the slit 310S, and a response signal thereto is received. The function of transmitting to the reader / writer 1000 (S) is provided. Therefore, the slit 310S enables individual transmission and reception of the RFID electromagnetic wave signal by the short wave S shown in FIG. 80 and FIG.

  Referring back to FIG. 79, when the IC card 800 is seen through in the overlapping direction, the front communication module 311 and the back communication module 321 are inside the card outline of the horizontally long rectangular shape and in the long side direction (namely, in FIG. 79). They are arranged offset to each other in the left and right direction). Specifically, an offset amount d (S) between the two communication modules 311 and 321, in other words, a distance d between 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 S), in other words, the separation distance d (S) is provided in the card long side direction of both IC chip main bodies 311M, 321M.

  Therefore, in FIG. 80 (or FIG. 81), the RFID electromagnetic wave signal by the short wave S transmitted from the antenna 1000A (S) of the reader / writer 1000 (S) is the facing communication module 311 (or 321) and the facing insulation sheet 12 Even if it is transmitted through (or 22) and passes through the slit 310S of the partition plate 310, the passage itself is blocked because the maximum transverse width W is smaller than the wavelength λS, and the occurrence in the non-facing communication module 321 (or 311) The magnetic field required to generate power is difficult to reach. Even if a part of the RFID electromagnetic wave signal passes through the slit 310S and reaches the antenna 321A (or 311A) of the non-facing side communication module 321 (or 311), the antenna communication distance with the reader / writer 1000 (S) Between the non-face-to-face communication module 321 (or 311) and the face-to-face communication module 311 (or 321) due to the difference L '(S)-L (S) or the offset amount d (S) described above. Therefore, false operation based on poor response is avoided.

  Furthermore, in FIG. 77 and FIG. 79, the slits 310S are at unequal positions deviated (that is, shifted) from the center in the long axis direction of the respective loop antennas 311A and 321A in the front side communication module 311 and the back side communication module 321. Each intersects with the two long sides of the card outline. Specifically, the width center CS of the slit 310S is offset from the center CA in the long axis direction of the loop antennas 311A and 321A by the deviation amount LC.

  Therefore, in FIG. 80 (or 81), 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 by the short wave S from the reader / writer 1000 (S). When magnetic flux passes or moves in the above, electromotive force is generated in the loop antenna 311A (or 321A) of the facing communication module 311 (or 321) by electromagnetic induction. On the other hand, the loop antenna 321A (or 311A) of the non-facing side 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 uneven position deviated (shifted) from the center in the long axis direction of the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) There is. Therefore, even when the loop antenna 321A (or 311A) of the non-facing side communication module 321 (or 311) is in the magnetic field of the RFID electromagnetic wave signal by the short wave S from the reader / writer 1000 (S), the magnetic flux is uneven Since it passes (moves), it does not generate an electromotive force necessary to drive the IC chip main body 321M (or 311M) to transmit (reply) to the reader / writer 1000 (S).

  Due to the presence of such a slit 310S, in FIG. 80, between the non-facing side communication module 321 and the reader / writer 1000 (S), and in FIG. 81, between the non-facing side communication module 311 and the reader / writer 1000 (S). Magnetic flux coupling is less likely to occur. Therefore, the slit 310S enables individual transmission and reception of the RFID electromagnetic wave signal by the short wave S shown in FIG. 80 and FIG.

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

  Here, the eighth example of the individual transmission and reception mode of the RFID electromagnetic wave signal between the antenna of the front side communication module and the antenna of the reader / writer and between the antenna of the back communication module and the antenna of the reader / writer is as follows. It will be. In the individual transmission / reception state (FIGS. 80 to 83), 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 and reception between the front communication module 311 and the reader / writer 1000 (S) <FIG. 80>
Face-to-face communication module, that is, front-side communication module, by the magnetic flux coupling described in the following [A] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur. Magnetic flux coupling occurs only between the reader / writer 1000 (S) and the reader / writer 1000 (S), and individual transmission and reception of the RFID electromagnetic wave signal by the short wave S becomes possible.
[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 communication module 311, and the data processor The antenna 1000A (S) receives 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.

[A] The occurrence of the eddy current and the demagnetizing field due to the transmission signal that has reached the facing main surfaces 310Lfs, 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] For eddy currents generated on the non-facing side main surfaces 310Lns and 310Rns due to eddy currents propagating from the facing side main surfaces 310Lfs and 310Rfs to the non-facing side main surfaces 310Lns and 310Rns The magnetic field generation phenomenon based on is inhibited by the slit 310S.
[C] Crossing width W <wavelength λS prevents the transmission signal from passing through the slit 310S, and it is difficult for the non-facing communication module, that is, the magnetic field necessary for generating an electromotive force in the back communication module 321 to reach.
[D] Due to the presence of the antenna communication distance difference L '(S) -L (S) and the offset amount d (S) between the communication modules, the non-face-to-face communication module (here, back side communication module 321) and face-to-face communication Since there is a difference in the transmission / reception timing with the module (here, the front side communication module 311), malfunction due to poor response is avoided.
[E] Since the amount of deviation LC is provided in the slit 310S, the loop antenna 321A of the non-facing side communication module 321 does not generate an electromotive force.

(Second Aspect) Individual Transmission and Reception Between Back Side Communication Module 321 and Reader / Writer 1000 (S) <FIG. 81>
A face-to-face communication module, that is, a back-side communication module, by the magnetic flux coupling described in the following [B] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [e] occur. Magnetic flux coupling occurs only between the reader / writer 1000 (S) 321 and the reader / writer 1000 (S), and individual transmission and reception of the RFID electromagnetic wave signal by the short wave S becomes possible.
[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 processor The antenna 1000A (S) receives 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.

[A] The occurrence of the eddy current and the demagnetizing field due to the transmission signal that has reached the facing main surfaces 310Lfs, 310Rfs of the partition plate 310 is blocked or suppressed by the slit 310S.
[B] For eddy currents generated on the non-facing side main surfaces 310Lns and 310Rns due to eddy currents propagating from the facing side main surfaces 310Lfs and 310Rfs to the non-facing side main surfaces 310Lns and 310Rns The magnetic field generation phenomenon based on is inhibited by the slit 310S.
[C] Crossing width W <wavelength λS prevents the transmission signal from passing through the slit 310S, so that the magnetic field necessary for generating an electromotive force in the non-facing communication module, ie, the front communication module 311, hardly reaches.
[D] Due to the presence of the antenna communication distance difference L '(S) -L (S) and the offset amount d (S) between the communication modules, the non-face-to-face communication module (here, the face-side communication module 311) and face-to-face communication Since there is a difference in the transmission / reception timing with the module (here, the back side communication module 321), malfunction due to poor response is avoided.
[E] Since the amount of bias 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 and reception between the front side communication module 611 and the reader / writer 5000 (M) <FIG. 82>
A reader / writer having a planar antenna 5000A (M) that can communicate in the frequency range of microwaves M different from the short wave S (for example, 2.45 GHz ± 130 MHz or 2.45 GHz ± 5%) facing the front side communication module 611 This is a case where 5000 (M) is arranged separately from the reader / writer 1000 (S).
In this case, when the magnetic flux coupling described in the following [X] is established by the independent microwave M, the front-side communication module 611 and the reader / writer 5000 (M) independently transmit and receive the RFID electromagnetic wave signal by the microwave M. Becomes possible.

[X] When the 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 communication module 611 and data processing The antenna 5000A (M) receives 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 transmission / reception timing controlled by the unit.

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

  Also in this case, the magnetic flux coupling described in the following [A] and [B] 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 (S) and between the back side communication module 321 and the second reader / writer 2000 (S). Simultaneous individual transmission and reception is possible. On the other hand, when the magnetic flux coupling described in the following [X] is established by the independent microwave M, the front communication module 611 and the reader / writer 5000 (M) can independently transmit and receive the RFID electromagnetic wave 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 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, At the transmission / reception timing controlled by 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 is received by the antenna 2000A (S).

[X] When the 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 communication module 611 and data processing The antenna 5000A (M) receives 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 transmission / reception timing controlled by the unit.

[A] The occurrence of eddy current and demagnetizing field due to the transmission signal that has reached 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 generated on the non-facing side main surface due to the eddy current propagating from the facing side main surface to the non-facing side main surface or the transmission signal flowing around the outside of the partition plate 310 It is inhibited.
[C] Crossing width W <wavelength λS prevents the transmission signal from passing through the slit 310S, and it is difficult for the magnetic field necessary for generating the electromotive force in the non-facing communication module to reach.
[D] Due to the presence of the antenna communication distance difference L '(S)-L (S) and the offset amount d (S) between the communication modules, the non-face-to-face communication module and the face-to-face communication module differ in the reception / transmission timing Therefore, false operation based on poor response is avoided.
[E] Since the amount of deviation LC is provided in the slit 310S, the loop antenna of the non-facing side communication module does not generate an electromotive force.

Therefore, in the fourth mode shown in FIG.
• A data read or write operation performed by the first reader / writer 1000 (S) on the first data storage unit provided in the IC chip main body 311M of the front side communication module 311 based on the above [A].
· A data read or write operation performed by the second reader / writer 2000 (S) to the second data storage unit provided in the IC chip main body 321M of the back side communication module 321 based on the above [B].
-Reading or writing operation of data executed by another reader / writer 5000 (M) to another data storage unit provided in the IC chip main body 611M of the front side communication module 611 based on the above [X].
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 among three reader / writers 1000 (S), 2000 (S) and 5000 (M) The number can be set arbitrarily 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 the two reader / writers 1000 (S) and 2000 (S) forming a pair. Since data access (reading or writing) can be performed simultaneously to each of the data storage units 321 and 611, it is possible to achieve expansion of data capacity and speeding up of data processing.

  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) as the front side communication module 311 and the back side communication module 321. The antenna communication distance L (S), L ′ (S) between the corresponding communication module 311, 321 and the reader / writer 1000 (S), 2000 (S) while transmitting the signal of the same output at ± 5%) May be identical.

  Further, as shown in FIG. 79, in the present embodiment, the short wave wiring board 311S and the microwave wiring board 611S are laminated and formed, but in the short wave wiring board 311S, the loop antenna 311A is used. If the inside is partially removed to form a recess and the removed wiring board 611S is embedded in the removed recess space, thinning of the IC card 800 can be achieved.

(9th embodiment)
A ninth embodiment of the IC card according to the present invention is shown in FIG. 84 to FIG. 84 is an exploded perspective view schematically showing an 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 noncontact short distance wireless communication in the proximity RFID system, which is formed by heating and pressing after laminating the respective components shown below. As one of the ID-1 size (85.60 mm in width × 53.98 mm in length), it is formed on one horizontally long rectangular card.
(1) A single flat sheet or film and a partition plate 810 (a partition member) formed in a horizontally long rectangular shape;
(2) A microwave front-side communication module 511 and a back-side communication module 521, which are disposed in the vertical direction so as to overlap each other in plan view so as to face the front-side main surface and back-side main surface of partition plate 810 (First and second communication members);
(3) A short-wave front-side communication module 411 (third communication member) which is disposed so as to be opposed to only the front-side main surface of the partition plate 810 so as to overlap in plan view and has a horizontally long rectangular shape;
(4) A microwave back side communication module 621 (third communication member) which is disposed in a longitudinal direction so as to be opposed to only the back side main surface of the partition plate 810 and overlap in plan view so as to overlap in a plan view;
(5) An electrically insulating space which is disposed between the partition plate 810 and the front side communication module 511, 411 and between the partition plate 810 and the back side communication module 521, 621, respectively, and corresponds to its own thickness between them. A horizontally long rectangular front side insulation sheet 12 and a rear side insulation sheet 22 (first and second insulation members) which form (a gap);
(6) Horizontally-long rectangular front side molding plate 13 and rear side molding plate 23 disposed on the outside of the front side communication modules 511 and 411 and the rear side communication modules 521 and 621 and holding the respective modules 511, 411, 521 and 621 in position. (First and second molded members).

  The front side protective sheet 14 and the rear side protective sheet 24 (first and second protective members) are as described in the first embodiment. The thickness of each component of the IC card 900 is also substantially the same as that described in the first embodiment.

  The partition plate 810 is located approximately at the center in the thickness direction of the IC card 900 and is made of a flat aluminum foil, and has one circular hole (a through hole 810H described later) near the center. There is. The partition plate 810 of this 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 of the antennas 511A and 521A is a straight line It is a planar antenna that spreads like a wing in the longitudinal direction, that is, the short side direction of the IC card 900 by being folded back and folded back.

  In this embodiment, as in the sixth embodiment or the seventh embodiment, the front communication module 511 and the back communication module 521 are both for the microwave M1 and have the same specifications, and the wiring board 511S and the wiring board 521S are It is a rectangular shape similar to the card outline, and the same outline is overlapped in a back-to-back state at substantially the same position in plan view to form a pair (one set) of communication modules (FIG. 85, FIG. 86) reference). The pair of IC chip main bodies 511M and 521M are disposed substantially at the center in the longitudinal direction of the corresponding planar antennas 511A and 521A. The microwave M1 is set, for example, in a frequency range of 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 (reader / writer 1000 (M1) It is possible to transmit and receive with M1) (see FIGS. 88 and 89).

  On the other hand, the single front communication module 411 has a rectangular shape elongated in the lateral direction (left and right direction) of the IC card 900, and the antenna 411A is formed in a rectangular spiral multiple times over the almost entire surface of the IC card 900 (four times in the figure). It is a looped (or coiled) antenna for circulating short waves. The IC chip main body 411M is disposed at any corner of the antenna 411A in the form of a rectangular loop.

  In this embodiment, the front side communication module 411 is a short wave set to a single frequency range independent of the frequency range of the microwave M1, for example, 13.56 MHz ± 0.68 MHz (or 13.56 MHz ± 5%) frequency range S, which can be transmitted and received 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). The front communication module 411 of this embodiment is substantially the same as the front 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 longitudinal direction (vertical direction) of the IC card 900, and the antenna 621A extends in a zigzag manner (curved in an S-shape) to extend in the longitudinal direction, ie, the IC card. A planar antenna spreads like a wing in the direction of the short side of 900.

  In this embodiment, the back side communication module 621 is set to a single frequency range independent of any of the frequency range of the microwave M1 and the frequency range of the short wave S, for example, the frequency range of 920 MHz ± 50 MHz (or 920 MHz ± 5%) This is for the microwave M2, and transmission and reception can be performed 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). An IC chip main body 621M is disposed substantially at the central portion in the vertical direction of the antenna 621A. 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 newly includes a single front side communication module 411 for the short wave S and a single for the microwave M2, in addition to the pair of communication modules 511 and 521 for the microwave M1. And one back side communication module 621. Specifically, in FIG. 85, the front communication module 511 of the pair of communication modules 511 and 521 for the microwave M1 is provided inside the rectangular loop antenna 411A that constitutes the single front communication module 411 for the short wave S. Are arranged, and 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, communication is performed with the front communication module 511 on the front side (the left side in the drawing) of the IC card 900 in which the reader / writer 1000 (M1) fixedly disposed slides along the main surface (in the vertical direction in the drawing). When doing, the main surface on the front side (left side) of the partition plate 810 becomes the facing side main surface 810 fs, and the main surface on the back side (right side) becomes the non-facing side main surface 810 ns. The front communication module 511 located between the reader / writer 1000 (M1) and the partition plate 810 is superimposed on the facing main surface 810 fs of the partition plate 810 as a facing communication module, and the reader / writer 1000 (M1) and the partition plate The back side communication module 521 not positioned between the second and third terminals 810 and 810 is superimposed on the non-facing side main surface 810ns of the partition plate 810 as the non-facing side communication module.

  As shown in FIG. 89, communication is performed with the back side communication module 521 on the back side (right side in the figure) of the IC card 900 on which the reader / writer 1000 (M1) fixedly arranged slides along the main surface (vertically in the figure). When doing, the main surface on the back side (right side) of the partition plate 810 becomes the facing side main surface 810 fs, and the main surface on the front side (left side) becomes the non-facing side main surface 810 ns. The back side communication module 521 located between the reader / writer 1000 (M1) and the partition plate 810 is superimposed on the facing side main surface 810 fs of the partition plate 810 as a facing side communication module, and the reader / writer 1000 (M1) and the partition plate A front side communication module 511 not positioned between the second and third terminals 810 and 810 is superimposed on the non-facing side main surface 810ns of the partition plate 810 as a non-facing side communication module.

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

  Further, as shown in FIG. 91, when the IC card 900 slides along the main surface (in the vertical direction 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. It communicates with the reader / writer 6000 (M2) alone (that is, in a form independent of the pair of communication modules 511, 521).

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

  In FIG. 88 (or FIG. 89), when the IC card 900 is seen through from the stacking direction, the partition plate 810 includes the antenna 511A (or 521A) of the facing communication module 511 (or 521) and the non-facing communication module 521 ( A through hole 810H as an open area is formed as an open area, which is removed through in a hole shape so as to partially overlap with the antenna 521A (or 511A) of 511) (see FIGS. 85 and 86).

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

  As shown in FIGS. 85 and 86, when the IC card 900 is seen through in the overlapping direction, the outer peripheral edge of the partition plate 810 is retracted and disposed inside the outline of the IC card 900. In addition, the outer peripheral edges of the front side communication modules 511 and 411 and the rear side communication modules 521 and 621 are respectively retracted and disposed inside 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 insulation sheet 12 and the back side insulation sheet 22 have front side communication modules 511 and 411 and rear side communication corresponding to their 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 rear side insulating sheet 22 have the same shape and size as the partition plate 810 (see FIG. 84).

  Referring back to FIGS. 88 and 89, by providing the through holes 810H in the partition plate 810, an eddy current is generated on the facing main surface 810 fs of the partition plate 810 by the RFID electromagnetic wave signal by the microwave M1 from the reader / writer 1000 (M1). It becomes possible to prevent or suppress a phenomenon that occurs to generate a demagnetizing field. In addition, the through hole 810H is an electromagnetic wave signal for RFID generated by an eddy current generated on the facing main surface 810fs and propagating through the partition plate 810 to reach the non-facing main surface 810ns or the microwave M1 from the reader / writer 1000 (M1). It is also possible to inhibit the phenomenon of generating a magnetic field on the non-facing side main surface 810 ns by the function of turning around the outside of the partition plate 810 and separating the eddy current generated on the non-facing side main surface 810 ns.

  In this way, the through holes 810H complement the damping or shielding action of the partition plate 810 against electromagnetic waves. That is, 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) by the through hole 810H, and a response signal thereto. Is given to the reader / writer 1000 (M1). Therefore, the through hole 810H enables individual transmission and reception of the RFID electromagnetic wave signal by the microwave M1 shown in FIG. 88 and FIG.

  By the way, 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 card outline of the horizontally long rectangular shape and its long side direction (namely, FIG. 87). Then, they are arranged offset with respect to each other in the left and right direction). Specifically, the offset amount d (M1) 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 main bodies 511M and 521M M1), in other words, the separation distance d (M1) is provided in the card long side direction of the two IC chip main bodies 511M, 521M.

  Therefore, in FIG. 88 (or FIG. 89), the RFID electromagnetic wave signal by the microwave M1 transmitted from the antenna 1000A (M1) of the reader / writer 1000 (M1) is the facing communication module 511 (or 521) and the facing insulating sheet Even if it passes through 12 (or 22) and passes through the through hole 810H of the partition plate 810, the diameter D is smaller than the wavelength λ M1 so that the passage itself is blocked, and the non-facing communication module 521 (or 511) The magnetic field required to generate power is difficult to reach. Even if a part of the RFID electromagnetic wave signal passes through the through hole 810H and reaches the antenna 521A (or 511A) of the non-facing communication module 521 (or 511), 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) receive / transmit timing by the difference in distance L '(M1)-L (M1) or the offset amount d (M1) described above. Since a difference is generated, malfunction due to poor response is avoided.

  Due to the presence of such a through hole 810H, the non-facing side communication module 521 and the reader / writer 1000 (M1) in FIG. 88, and the non-facing side 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 and reception of the RFID electromagnetic wave signal by the microwave M1 shown in FIG. 88 and FIG.

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

  Here, the ninth embodiment of the individual transmission and reception mode of the RFID electromagnetic wave signal 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 as follows. It will be. In the individual transmission / reception state (FIGS. 88 to 92), 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 and reception between the front communication module 511 and the reader / writer 1000 (M1) <FIG. 88>
A face-to-face communication module, that is, a front-side communication module, by the magnetic flux coupling described in the following [A] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. Magnetic flux coupling occurs only between the reader / writer 1000 (M1) and the reader / writer 1000 (M1), and individual transmission / reception of the RFID electromagnetic wave signal by the microwave M1 becomes possible.
[A] When the 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 communication module 511, and data processing 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 transmission / reception timing controlled by the unit.

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

Second Embodiment Individual Transmission and Reception Between Back Side Communication Module 521 and Reader / Writer 1000 (M1) <FIG. 89>
A face-to-face communication module, that is, a back-side communication module, by the magnetic flux coupling described in the following [B] being established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. Magnetic flux coupling occurs only between the reader / writer 1000 (M1) and the reader / writer 1000 (M1), and individual transmission / reception of the RFID electromagnetic wave signal by the microwave M1 becomes possible.
[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 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 is received by the antenna 1000A (M1).

[A] The occurrence of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface 810 fs of the partition plate 810 is blocked or suppressed by the through hole 810 H.
[B] A magnetic field generation phenomenon based on an eddy current generated from the facing main surface 810 fs to the non-facing main surface 810 ns or an eddy current generated on the non-facing main surface 810 ns due to a transmission signal around the outside of the partition plate 810 is It is inhibited by the through hole 810H.
[C] The diameter D <wavelength λM1 inhibits the passage of the transmission signal through the through hole 810H, so that the magnetic field necessary for generating an electromotive force in the non-facing communication module, that is, the front communication module 511 hardly reaches.
[D] Due to the presence of the antenna communication distance difference L '(M1)-L (M1) and the offset amount d (M1) between the communication modules, the non-facing communication module (here, the front communication module 511) and the facing communication Since there is a difference in the transmission / reception timing with the module (here, the back side communication module 521), malfunction due to poor response is avoided.

(Third aspect) Independent transmission and reception between the front communication module 411 and the reader / writer 5000 (S) <FIG. 90>
Opposite to the front side communication module 411, it has a loop antenna 5000A (S) that can communicate in the frequency range of the short wave S different from the microwave M1 (for example, 13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) This is a case where the reader / writer 5000 (S) is disposed separately from the reader / writer 1000 (M1).
In this case, when the magnetic flux coupling described in the following [X] is established by the independent short wave S, 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 the 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 communication module 411, and the data processor The antenna 5000A (S) receives 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.

(Fourth aspect) Independent transmission and reception between the back side communication module 621 and the reader / writer 6000 (M2) <FIG. 91>
A reader having a planar antenna 6000A (M2) that can communicate in the frequency range of microwave M2 (for example, 920 MHz ± 50 MHz or 920 MHz ± 5%) different from both microwave M1 and short wave S, facing back side communication module 621 This is a case where the writer 6000 (M2) is disposed separately from the reader / writer 1000 (M1) and 5000 (S).
In this case, the magnetic flux coupling described in the following [Y] is established by the independent microwave M2, and 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. Becomes 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 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 parallel individual transmission and 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 and reception between front side communication module 411 and reader / writer 5000 (S), and between back side communication module 621 and reader / writer 6000 (M2) <FIG. 92>
This is the case shown below. That is, a second planar antenna 2000A (M1) that can communicate in the same frequency range (2.45 ± 130 MHz or 2.45 GHz ± 5%) as the antenna 1000A (M1) is provided facing the back side communication module 521. The reader / writer 2000 (M1) is disposed separately from the first reader / writer 1000 (M1). On the other hand, a loop antenna 5000A (S) that can communicate in the frequency range of the short wave S different from the microwave M1 (for example, 13.56 MHz ± 0.68 MHz or 13.56 MHz ± 5%) facing the front side communication module 411 And another reader / writer 5000 (S) having the Further, a planar antenna 6000A (M2) that can communicate in the frequency range of microwave M2 (for example, 920 MHz ± 50 MHz or 920 MHz ± 5%) different from both microwave M1 and short wave S, facing back side communication module 621 Further, another reader / writer 6000 (M2) is disposed.

  Also in this case, the magnetic flux coupling described in the following [A] and [B] is established, and a plurality of phenomena including at least [a] and [b] among [a] to [d] occur. As a result, magnetic flux coupling occurs 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 and reception of electromagnetic wave signals for RFID becomes possible. On the other hand, when the magnetic flux coupling described in the following [X] is established by the independent short wave S, the magnetic flux coupling occurs 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 Enables independent transmission and reception of Furthermore, the magnetic flux coupling described in the following [Y] is established by the independent microwave M2, so that the magnetic flux coupling occurs only between the back side communication module 621 and the reader / writer 6000 (M2). Independent transmission and reception of electromagnetic wave signals become 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 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 (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 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 transmission / reception timing controlled by the data processing unit is received by the antenna 2000A (M1).

[X] When the 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 communication module 411, and the data processor The antenna 5000A (S) receives 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.
[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 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] The through hole 810H prevents or suppresses the occurrence of eddy current and demagnetizing field due to the transmission signal that has reached the facing main surface of the partition plate 810.
[B] The magnetic field generation phenomenon based on the eddy current generated on the non-facing side main surface by the eddy current propagating from the facing side main surface to the non-facing side main surface and the eddy current generated on the non-facing side main surface It is inhibited by
[C] The diameter D <wavelength λM1 inhibits the passage of the transmission signal through the through hole 810H, and the magnetic field necessary for generating an electromotive force in the non-facing communication module hardly reaches it.
[D] Due to the presence of the antenna communication distance difference L '(M1)-L (M1) and the offset amount d (M1) between the communication modules, the non-face-to-face communication module and the face-to-face communication module differ in receiving and transmitting timing. Therefore, false operation based on poor response is avoided.

Therefore, in the fifth mode shown in FIG.
Data read or write operation executed by the first reader / writer 1000 (M1) to the first data storage unit provided in the IC chip main body 511M of the front side communication module 511 based on the above [A].
Data read or write operation executed by the second reader / writer 2000 (M1) to the second data storage unit provided in the IC chip main body 521M of the back side communication module 521 based on the above [B].
-Based on the above [X], an operation of reading or writing data performed by another reader / writer 5000 (S) to another data storage unit provided in the IC chip main body 411M of the front side communication module 411;
-Based on the above [Y], the data read or write operation executed by the other reader / writer 6000 (M2) to the other data storage unit provided in the IC chip main 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), The number of simultaneously operating 6000 (M2) 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) independent of the two reader / writers 1000 (M1) and 2000 (M1) forming a pair are used. Since data access (reading or writing) can be performed simultaneously to each data storage unit of the communication modules 511, 521, 411, and 621, it is possible to expand data capacity and speed up data processing.

  At this time, the first and second reader / writers 1000 (M1) and 2000 (M1) have the same frequency range (2.45 ± 130 MHz or 2.45 GHz ± 5) with respect to the front side communication module 511 and the rear side communication module 521. And transmit the same output signal, and the antenna communication distances L (M1) and L '(M1) between the corresponding communication modules 511 and 521 and the reader / writer 1000 (M1) and 2000 (M1) are the same. It is good.

  Further, as shown in FIG. 87, in the present embodiment, the short wave wiring board 411S and the microwave wiring board 511S are laminated and formed, but in the short wave wiring board 411S, the loop antenna 411A is used. If the inside is partially removed to form a recess and the removed wiring board 511S is embedded in the removed recess space, thinning of the IC card 900 can be achieved.

  In the present invention including the embodiment, the card of “ID-1 size” standardized and widely spread in ISO / IEC 7810 has been described as an example, but the present invention is not limited to the past, present, and future. Applicable to any card sizes that appear in. Similarly, although the application date (priority date) of the present application has been described based on the international standard frequency specified by ISO / IEC standard, JIS standard, etc., the present invention is not limited to the revision of ISO / IEC standard, JIS standard etc. It is of course applicable to new, current or revised standards established independently in each country / area.

  In the respective embodiments described above (the first to ninth embodiments), parts having common functions are given the same reference numerals and detailed explanations thereof will be omitted. In addition, these embodiments and modifications can be implemented appropriately in combination with each other or with the prior art, as long as technical contradiction does not occur or the legal or moral norms are not violated.

  As an example of combination with the prior art, a magnetic stripe type memory unit 232 is described in the card 100 of the first embodiment (see FIG. 14). The noncontact IC card 100, 200,... 900 of the present invention may be provided with a magnetic contact IC module according to a conventional contact IC card. At that time, either the combination type in which the communication module 11, 21 etc. (the communication IC module) of the present invention and the conventional magnetic contact type IC module are electrically connected or the hybrid type in which they are not electrically connected and independent. It may be.

10 Partition plate (partition member)
10 fs facing side main surface 10 ns non-facing side main surface 10H microwave through hole (open area)
11 Microwave front side communication module (first communication member)
11A antenna 11B auxiliary power supply unit 11M IC chip main body 11M1 transmission / reception unit 11M2 data storage unit 11M3 power generation unit 11S wiring board 12 front side insulating sheet (first insulating member)
13 Front side forming plate (first forming member)
14 Front side protection sheet (first protection member)
21 Microwave backside communication module (second communication member)
21A antenna 21B auxiliary power supply unit 21M IC chip main body 21M1 transmission / reception unit 21M2 data storage unit 21M3 power generation unit 21S wiring board 22 back side insulating sheet (second insulating member)
23 Back side molding plate (second molding member)
24 back side protection sheet (second protection member)
100 IC card for microwave (card for contactless short distance wireless communication)
110 Partition plate (partition member)
110 fs facing side main surface 110 ns non-facing side main surface 110C circumferential surface 110 F ridge 110H1 first through hole for microwave (open area)
110H2 Second through hole for microwave (open area)
121 Microwave backside communication module (second communication member)
123 Rectangular frame (frame member)
123W peripheral wall 200 IC card for microwave (card for non-contact type short distance wireless communication)
223 Back side molding plate (second molding member)
223W peripheral wall 300 IC card for microwave (card for contactless short distance wireless communication)
310 Partition plate (partition member)
310L Left side partition plate (partition member)
310Lfs Left-facing side main surface 310Lns Left non-facing side main surface 310R Right-side partition plate (partition member)
310Rfs Right-facing side main surface 310Rns Right non-facing side main surface 310S Shortwave slit (open area)
311 Shortwave front side communication module (first communication member)
321 Short wave back side communication module (second communication member)
400 Shortwave IC Card (Non-Contact Short-distance Wireless Communication Card)
410 Partition plate (partition member)
410fs facing side main surface 410ns non-facing side main surface 410N notch for short wave (open area)
500 shortwave IC card (card for non-contact type short distance wireless communication)
510 Partition plate (partition member)
510H1 First microwave through hole (open area)
510H2 Second microwave through hole (open area)
511 Second microwave front side communication module (first communication member)
521 Backside Communication Module for Second Microwave (Second Communication Member)
600 First and second microwave dual use IC card (card for non-contact short distance wireless communication)
610 Partition plate (partition member)
610L Left side partition plate (partition member)
610R Right side partition plate (partition member)
610H Microwave through hole (open area)
610S short wave slit (open area)
700 Microwave / Shortwave Dual IC Card (Non-contact Short-distance Wireless Communication Card)
611 Microwave front side communication module (third communication member)
800 Microwave / Shortwave Combined IC Card (Non-contact Short-distance Wireless Communication Card)
411 Short wave front communication module (third communication member)
621 Microwave backside communication module (third communication member)
810 Partition plate (partition member)
810H Microwave Through Hole (Open Area)
900 Combined IC Card for Microwaves and Shortwaves (Card for Contactless Near Field Communication)
1000, 2000, 3000, 4000, 5000, 6000 Reader writer 1000A, 2000A, 3000A, 4000A, 5000A, 6000A Antenna 1000B Power supply unit 1000C Data processing unit 1000S Transmitter / receiver unit d Offset amount between front side communication module and back side communication module (both ICs Distance of tip body)
D, D1, D2 Maximum hole diameter of through hole for microwave W Antenna maximum transverse width of slit for short wave or notch for short wave L, L 'Antenna communication distance CA Longitudinal center of loop-like antenna CN Center width of notch for short wave CS Width center of slit for short wave LC Deviation of slit for short wave or notch for short wave (displacement amount)

Claims (26)

A single card used for contactless near field communication,
A partition member which is conductive and has an attenuation or shielding action against electromagnetic waves and is formed into a sheet or film shape;
It includes an IC chip main 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 overlap each other in plan view facing one main surface and the other main surface of the partition member. The non-contact short distance wireless communication to the reader / writer is individually performed by the antenna receiving an RFID electromagnetic wave signal in a predetermined frequency range from the reader / writer and transmitting a response signal to it to the reader / writer. First and second communication members to
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members formed in the shape of a film or
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member When the non-facing side communication member which is not located on the non-facing side main surface is overlapped on the non-facing side main surface and these are seen through from the overlapping direction, the partition member includes the antenna of the facing side communication member and the antenna of the non-facing side communication member And an open area is formed which is partially removed through and
In the communication state with the 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 the RFID electromagnetic wave signal. Short distance wireless communication card.   The open area prevents or suppresses generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the open area on the facing main surface. The non-facing is caused by the eddy current that propagates through the partitioning member and reaches the non-facing side main surface or the eddy current generated around the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partitioning member. By inhibiting the phenomenon of generating a magnetic field on the side main surface, the damping or shielding action of the partition member against electromagnetic waves is complemented, and only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and 2. The noncontact near field communication card according to claim 1, further comprising a function of transmitting a response signal to a reader / writer.   The noncontact near-field wireless communication card according to claim 2, wherein the partition member is made of a nonmagnetic material.   The antenna communication distance between the facing side communication member and the reader / writer and the antenna communication distance between the non-facing side communication member and the reader / writer are both set equal to or less than the wavelength of the RFID electromagnetic wave emitted from the reader / writer. The contactless near-field wireless communication card according to claim 3. The first and second communication members are arranged offset with respect to each other inside a rectangular card outline when viewed in the overlapping direction,
The open area simultaneously 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 simultaneously The noncontact near-field wireless communication card according to any one of claims 1 to 4, which is formed through as an area of The first and second communication members are arranged offset with respect to each other inside a rectangular card outline when viewed in the overlapping direction,
The open area is a pair 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 separately The noncontact near-field wireless communication card according to any one of claims 1 to 4, which is formed through as an area of   7. The display device according to any one of claims 1 to 6, wherein the outer peripheral edge of the partition member and the first and second communication members are disposed such that the outer peripheral edges thereof are retracted to the inner side from the card outer shape when viewed in the overlapping direction. The contactless near-field wireless communication card according to claim 1.   A peripheral wall portion formed in a frame shape is provided along each side of a rectangular shape forming the card outer shape, 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. The noncontact 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 surrounding the inner surface of the peripheral wall portion, and then bent outward in the radial direction to form a collar portion seated on the peripheral wall portion.
The peripheral surface portion and the ridge portion of the partition member prevent or suppress that the RFID electromagnetic wave signal transmitted from the reader / writer wraps around the peripheral wall portion to cause magnetic flux coupling with the non-facing side communication member. The contactless near-field wireless communication card described in.   When viewed in the overlapping direction, the first and second insulating members are formed such that the outer peripheral edge of each is larger than the corresponding first and second communication members, and the open region of the partition member is The contactless near-field wireless communication card according to any one of claims 1 to 9, which is held in a closed state. A single card used for contactless near field communication,
A partition member which is made of a nonmagnetic material which is electrically conductive and has an attenuating or shielding effect on electromagnetic waves and which is formed into a sheet shape or a film shape;
It includes an IC chip main body having a data storage function and a communication control function and a planar antenna having a signal transmission / reception function so as to overlap with one main surface and the other main surface of the partition member in plan view. A noncontact near-field wireless communication with the reader / writer by being disposed, 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 performing communication individually;
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members formed in the shape of a film or
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member A non-facing side communication member which is not located on the non-facing side main surface,
The communication distance between the facing side communication member and the reader / writer and the communication distance between the non-facing side communication member and the reader / writer are both set equal to or less than the wavelength of the RFID electromagnetic wave emitted from the reader / writer.
When viewed through from the overlapping direction, the partition member is formed with an open area which is removed in the form of a hole so as to partially overlap with the antenna of the facing communication member and the antenna of the non-facing communication member. And
The open area prevents or suppresses generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the open area on the facing main surface. The non-facing is caused by the eddy current that propagates through the partitioning member and reaches the non-facing side main surface or the eddy current generated around the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partitioning member. By inhibiting the phenomenon of generating a magnetic field on the side main surface, the damping or shielding action of the partition member against electromagnetic waves is complemented, and only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and Non-contact distance measuring system characterized by providing a function of transmitting a response signal to a reader / writer and enabling individual transmission and reception of an RFID electromagnetic wave signal. Wireless communication card. The first and second communication members are arranged offset with respect to each other inside a rectangular card outline when viewed in the overlapping direction,
The open area is simultaneously a portion of the planar antenna of the facing communication member projected on the facing main surface and a portion of the planar antenna of the non-facing communication member projected on the non-facing main surface. The noncontact near-field communication card according to claim 11, wherein the card is formed as a single through hole. The first and second communication members are arranged offset with respect to each other inside the rectangular card outline when viewed in the overlapping direction,
The open area includes a part of a planar antenna of the facing communication member projected on the facing main surface and a part of the flat antenna of the non-facing communication member projected on the non-facing main surface. The contactless near-field wireless communication card according to claim 11, wherein the card is formed as a pair of through holes separately included.   The non-contact type short distance wireless communication according to any one of claims 11 to 13, wherein in the open area, the maximum value of the hole diameter is set smaller than the wavelength of the RFID electromagnetic wave emitted from the reader / writer. card.   When viewed from the overlapping direction, the outer peripheral edge of the partition member is disposed to be retracted inside the card outer shape, and the outer peripheral edge of the facing side communication member and the non-facing side communication member is the outer peripheral edge of the partition member The noncontact near-field wireless communication card according to any one of claims 11 to 14, wherein the card is disposed further retracted. A single card used for contactless near field communication,
A partition member which is made of a nonmagnetic material which is electrically conductive and has an attenuating or shielding effect on electromagnetic waves and which is formed into a sheet shape or a film shape;
It includes an IC chip main body having a data storage function and a communication control function and a loop antenna having a signal transmission / reception function, and overlaps one of the main surface and the other main surface of the partition member in plan view. A noncontact near-field wireless communication with the reader / writer by being disposed, the loop antenna receives the 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 performing communication individually;
A sheet disposed 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 to provide an electrical insulation state And first and second insulating members formed in the shape of a film or
Among the first and second communication members, the facing communication member located between the reader / writer and the partition member is superimposed on the facing main surface of the partition member, and between the reader / writer and the partition member A non-facing side communication member which is not located on the non-facing side main surface,
The communication distance between the facing side communication member and the reader / writer and the communication distance between the non-facing side communication member and the reader / writer are both set equal to or less than the wavelength of the RFID electromagnetic wave emitted from the reader / writer.
When viewed through from the overlapping direction, the partition member is opened and removed in a notch shape or a slit shape so as to partially overlap with the antenna of the facing side communication member and the antenna of the non-facing side communication member. An area is formed
The open area prevents or suppresses generation of a demagnetizing field by generating an eddy current on the facing main surface of the partition member by the RFID electromagnetic wave signal from the reader / writer, and generates the open area on the facing main surface. The non-facing is caused by the eddy current that propagates through the partitioning member and reaches the non-facing side main surface or the eddy current generated around the non-facing side main surface of the RFID electromagnetic wave signal from the reader / writer around the outside of the partitioning member. By inhibiting the phenomenon of generating a magnetic field on the side main surface, the damping or shielding action of the partition member against electromagnetic waves is complemented, and only the facing communication member receives the RFID electromagnetic wave signal from the reader / writer and Non-contact distance measuring system characterized by providing a function of transmitting a response signal to a reader / writer and enabling individual transmission and reception of an RFID electromagnetic wave signal. Wireless communication card. The first and second communication members are arranged offset with respect to each other inside a rectangular card outline when viewed in the overlapping direction,
The open area is simultaneously 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 noncontact near-field wireless communication card according to claim 16, wherein the card is formed as a single slit crossing at two places.   The single slits respectively intersect the two long sides of the card outline at unequal positions deviated from the longitudinal center of each loop antenna in the first and second communication members. The contactless near-field wireless communication card according to claim 17, which is formed. The first and second communication members are arranged offset with respect to each other inside a rectangular card outline when viewed in the overlapping 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. The contactless near-field wireless communication card according to claim 18, wherein the card is formed as a pair of notches which cross at two places separately.   The pair of notches cross each other separately with the two long sides of the card outline at an uneven position deviated from the longitudinal center of each loop antenna in the first and second communication members. The contactless near-field wireless communication card according to claim 19, wherein the card is formed in:   The noncontact short distance wireless communication according to any one of claims 17 to 20, wherein in the open area, 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. Card.   The IC chip bodies of the first and second communication members each include a data storage unit for storing at least one of two-dimensional or three-dimensional image data, voice data, and number code data for personal identification, The noncontact near-field wireless communication card according to any one of claims 1 to 21, wherein the personal identification data is read from the data storage unit or written to the data storage unit by a reader / writer. A noncontact near-field wireless communication card according to any one of claims 1 to 22,
A plurality of sets of the first communication member disposed on one main surface and the second communication member disposed on the other main surface are installed as one set.
A contactless near-field wireless communication card, which can be individually transmitted and received between the first and second communication members and the reader / writer in mutually different frequency bands or frequency ranges for each set. The noncontact near-field wireless communication card according to any one of claims 1 to 23.
A first reader / writer disposed opposite to the first communication member and capable of only non-contact short distance wireless communication with the first communication member in a predetermined frequency band or frequency range;
A second member disposed opposite to the second communication member and capable of only contactless near-field wireless communication with the second communication member in the same frequency band or frequency range as the first communication member Equipped with a reader / writer,
Data read or write operation performed by the first reader / writer to a first data storage unit provided in the IC chip main body of the first communication member, and an IC chip main body of the second communication member A data parallel processing system characterized in that a second data storage unit provided in the second data storage unit can process data read or write operations executed by the second reader / writer in parallel. The contactless near-field wireless communication card according to any one of claims 1 to 23,
In at least one of the two main surfaces, communication with the reader / writer is possible in a frequency band or frequency range different from the frequency band or frequency range in which individual transmission / reception between the first and second communication members and the reader / writer is enabled. One or more third communication members,
The noncontact near-field wireless communication card, wherein the third communication member can communicate with the reader / writer in a single independent frequency band or frequency range. The noncontact near field communication card according to claim 25;
The individual transmission and reception with the corresponding communication members are arranged opposite to each of the plurality of communication members arranged on the one main surface and the other main surface, and in the frequency band or frequency range of the corresponding RFID electromagnetic wave signal Equipped with multiple reader / writers to
A data parallel processing system characterized in that data reading or writing operations executed by a corresponding reader / writer can be processed in parallel with a data storage unit provided in each chip body.

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