JP2006133845A - Non-contact ic card, and portable non-contact ic card housing member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-contact IC card and a portable non-contact IC card housing member capable of stabilizing communication with a reader. <P>SOLUTION: Even when a communication interference member 9 such as another non-contact IC card is housed together in a commutation ticket holder 8, a non-contact IC card 13 of use target is isolated from the communication interference member 9 by means of a high-permeability material layer 2. Therefore, a magnetic field M1 emitted from an antenna 7 on the reader side penetrate through the non-contact IC card 13, and the penetrating magnetic field M2 does not penetrates through the communication interference member 9, but penetrates through the inside the high-permeability material layer 2 magnetically having a small resistance, and radiates from its end portion. Thus, the attenuation of the magnetic loop M becomes small, and the receiving power of the non-contact IC card 13 can be increased. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a non-contact IC card and a portable non-contact IC card storage body, and more specifically, a non-contact IC card capable of stabilizing communication without a communication error with a reader and portable The present invention relates to a non-contact IC card storage body.

  In recent years, various contactless IC cards such as transportation tickets and commuter passes have become widespread. As shown in FIG. 4, this non-contact IC card has a structure in which both sides of a substrate on which an IC chip 3 and an antenna coil 4 are mounted are sandwiched between overlay sheets 5, and is kept in a non-contact state close to a reader. This is a system for data communication with a reader. Since the non-contact IC card 13 cannot be mounted with a power supply due to thinning, the non-contact IC card 13 is temporarily stayed in the magnetic loop M emitted from the reader-side antenna 7 as shown in FIG. A power source is obtained by induction, and a signal is transmitted to perform data communication.

  Thus, since the non-contact IC card 13 and the reader 6 communicate via the magnetic loop M, a communication disturber made of a conductive material, a magnetic material, or the like in the pass case 10 as shown in FIG. 9. For example, when the non-contact IC card 13 is placed in the magnetic loop M in the presence of point cards using other non-contact IC cards, coins, precious metals, keys, and aluminum sheets, the non-contact IC card 13 is transmitted. The transmitted magnetic field M2 is attenuated by passing through the communication disturbing body 9, and becomes significantly weaker than the magnetic field M1 generated by the reader side antenna 7. That is, since the magnetic loop M is attenuated, the power source by electromagnetic induction of the non-contact IC card 13 is reduced, the data transmitted from the non-contact IC card 13 cannot be received by the reader side antenna 7, and a communication error occurs and the system is It will not function properly.

  Usually, in the pass case 10 or the like for storing the non-contact IC card 13, the communication disturbing body 9 as illustrated is often stored together, and the non-contact IC card 13 causes a communication error and is stable. There was a problem that could not communicate.

  Means have been proposed for preventing non-contact IC cards in the storage case from data exchange or data destruction by external irrelevant electromagnetic wave signals (see, for example, Patent Documents 1 and 2). The non-contact IC card is provided to cover and protect the entire non-contact IC card, and normal electromagnetic waves from the reader are also blocked. Therefore, it is necessary to take out the non-contact IC card from the storage case when used. That is, with these proposals, communication with the reader could not be stabilized.

  In view of this, there has been proposed a storage case capable of data communication without a communication error with a reader without taking out a non-contact IC card from the storage case during use (see Patent Document 3). In this proposal, the inside of the storage case main body is divided into a plurality of sections, and the partition plate to be divided is made into an electromagnetic wave shielding material, and the partition plate absorbs or reflects radio waves, etc., for non-contact IC intended for electromagnetic waves from the reader It is designed to enter only the card. However, since it is not an active structure that reduces the magnetic resistance against the magnetic field transmitted through the target non-contact IC card, for example, when the magnetic loop M emitted by the reader is weak or against the magnetic loop M Depending on the orientation of the non-contact IC card, a communication error may occur, and further stabilization of communication is necessary.

Further, since the conventional proposal is based on the premise that the non-contact IC card is accommodated in the housing case, there is a problem that a communication error cannot be prevented when the non-contact IC card is carried alone.
JP 2003-281480 A JP 2001-256450 A JP 2004-102473 A

  An object of the present invention is to provide a non-contact IC card and a portable non-contact IC card housing capable of stabilizing communication by eliminating a communication error with a reader.

  In order to achieve the above object, the non-contact IC card of the present invention is characterized in that a high permeability material layer is provided only on one surface in the thickness direction.

  In addition, the portable non-contact IC card storage body of the present invention has a storage part for storing the non-contact IC card, and a high permeability material layer is provided only on one surface separating the storage part in the thickness direction. It is characterized by.

  According to the non-contact IC card of the present invention, the high-permeability material layer provided only on one surface with respect to the thickness direction prevents the transmission of the magnetic field transmitted through the non-contact IC card to the communication disturber and causes a communication error. Can be prevented. In addition, since the high permeability material layer has a low magnetic resistance, the magnetic field does not pass through the high permeability material layer and is radiated from the end thereof without passing through the high permeability material layer. The electric power obtained by electromagnetic induction increases. That is, in a normal communication state, the magnetic loop M from the reader is relatively large and passes through the storage case and the hand holding the storage case, so the magnetic field transmitted through the non-contact IC card is attenuated by them and returns to the reader-side antenna. However, in the non-contact IC card of the present invention, the magnetic field is radiated from the end through the inside of the low-permeability high-permeability material layer, and the magnetic loop M is shortened. The reception power of the contact IC card can be increased, and communication with the reader can be further stabilized.

  In addition, since the high magnetic permeability material layer is provided on the card itself, stable data communication with the reader is possible without a storage case.

  According to the portable non-contact IC card storage body of the present invention, the high-permeability material layer is provided only on one surface that separates the storage portion for storing the non-contact IC card in the thickness direction. Even if they are stored together, the non-contact IC card and the communication disturbing body are stored with the high magnetic permeability material layer interposed therebetween, thereby preventing the transmission of the magnetic field transmitted through the non-contact IC card to the communication disturbing body. Communication errors can be prevented.

  In addition, since the high permeability material has a low magnetic resistance, the magnetic field passes through the inside of the high permeability material layer and is radiated from the end thereof, and the magnetic loop M is not attenuated as compared with the conventional communication state. Therefore, the reception power of the non-contact IC card can be increased, and further stabilization of communication can be achieved.

  Hereinafter, a non-contact IC card and a portable non-contact IC card housing of the present invention will be described based on the embodiments shown in the drawings.

  FIG. 1 shows an example of an embodiment of a non-contact IC card 1. The non-contact IC card 1 includes a high permeability material layer 2 on an overlay sheet 5 on one surface with respect to the thickness direction. When the non-contact IC card 1 is brought close to the reader 6 and temporarily stays in the magnetic loop M, the magnetic field M1 generated by the reader-side antenna 7 constituting the magnetic loop M is transmitted through the non-contact IC card 1. Instead, the magnetic field M2 that flows through the high permeability material layer 2 and passes through the inside is radiated from the end. This is because the high-permeability material layer 2 has a low magnetic resistance, and therefore flows through the high-permeability material layer 2 without trying to flow air or the like having a higher resistance.

  Conventionally, as shown in FIG. 5, the magnetic loop M is relatively large, and the magnetic field M2 transmitted through the non-contact IC card 13 passes through the pass case 10 or the hand holding the pass case 10 and attenuates. Was slightly weakened.

  In this embodiment, since the magnetic loop M passes through the high magnetic permeability material layer 2, the magnetic loop M is shortened, attenuation is minimized, the received power due to electromagnetic induction of the non-contact IC card 1 can be increased, and a communication error occurs. Can be prevented.

  Since the high-permeability material layer 2 is provided on the non-contact IC card 1 itself, stable data communication can be ensured without a housing such as a pass case.

  Further, even in a normal pass case 10 in which the communication disturbing body 9 is accommodated as shown in FIG. 6, the high magnetic permeability material layer 2 of the non-contact IC card 1 of the present invention is accommodated on the communication disturbing body 9 side. Then, the same effect as described above can be obtained, and the occurrence of a communication error can be prevented.

  As the thickness of the high magnetic permeability material layer 2 increases, the effect increases. However, in consideration of handleability and the like, the thickness is 0.05 mm to 2.00 mm, preferably about 0.10 mm to 1.00 mm. The high magnetic permeability material layer 2 is preferably provided so as to cover the entire one surface of the non-contact IC card 1. In the embodiment, the high magnetic permeability material layer 2 is provided on the surface of one surface, but it can also be provided inside the overlay sheet 5.

  Examples of the material constituting the high magnetic permeability material layer 2 include permalloy and amorphous. These high magnetic permeability material flake powders are formed into a sheet shape to form a high magnetic permeability material layer 2. The flaky powder preferably has a flat shape with an average particle size of 10 to 200 μm and an aspect ratio of 5 to 10.

  FIG. 3 shows an embodiment of a pass case 8 as an example of the portable non-contact IC card container of the present invention. The pass case 8 has a storage portion 11 for storing the non-contact IC card 13, and a partition made of the high magnetic permeability material layer 2 is provided on one surface in the thickness direction of the storage portion 11. The storage portion 11 is separated from the other storage portion by the material layer 2. A transparent window 12 made of a transparent resin is provided on the other surface in the thickness direction, which is the surface of the storage portion 11.

  FIG. 2 shows a state in which the conventional non-contact IC card 13 is housed in the pass case 8 of the present invention and is close to the reader 6. At this time, even if the communication case 9 such as another non-contact IC card is housed together in the pass case 8, the high permeability material layer 2 communicates with the non-contact IC card 13 to be used. Since the interfering body 9 is separated, the magnetic field M1 emitted by the reader side antenna 7 is transmitted through the non-contact IC card 13, and the transmitted magnetic field M2 passes through the high magnetic permeability material layer 2 from the end. Radiated.

  Therefore, if this pass case 8 is used, even if it is the conventional non-contact IC card 13, the magnetic field M2 which permeate | transmitted the non-contact IC card 13 does not permeate | transmit the communication obstruction body 9, and can prevent a communication error. . In addition, since the magnetic field M2 passes through the high permeability material layer 2 having a small magnetic resistance, the magnetic loop M is less attenuated and the received power of the non-contact IC card 13 can be increased, thereby stabilizing the data communication. be able to.

  Although the pass case is illustrated as an embodiment, the present invention is not limited to this, and the portable non-contact IC card container can be applied to a wallet, a second bag or the like.

It is explanatory drawing which shows the communication state of the non-contact IC card and reader of embodiment of this invention. It is explanatory drawing which shows the communication state of the conventional non-contact IC card accommodated in the pass case of embodiment of this invention, and a reader. It is a partially transparent perspective view which shows an example of the pass case of embodiment of this invention. It is explanatory drawing which shows an example of the structure of the conventional non-contact IC card. It is explanatory drawing which shows the normal communication state of the conventional non-contact IC card accommodated in the normal pass case, and a reader. It is explanatory drawing which shows the communication state of the conventional non-contact IC card and reader | leader in case a communication obstruction exists in a normal pass case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Non-contact IC card of this invention 2 High magnetic permeability material layer 3 IC chip 4 Antenna coil 5 Overlay sheet 6 Reader 7 Reader side antenna 8 Pass case of this invention (portable non-contact IC card storage body)
9 Communication jammers
DESCRIPTION OF SYMBOLS 10 Conventional pass case 11 Storage part 12 Transparent window 13 Conventional non-contact IC card M Magnetic loop M1 Magnetic field emitted from a reader M2 Magnetic field transmitted through (passed through) a non-contact IC card

Claims (5)

  A non-contact IC card, wherein a high permeability material layer is provided only on one surface in the thickness direction.   The non-contact IC card according to claim 1, wherein the high magnetic permeability material layer is made of either permalloy or amorphous.   A portable non-contact IC card storage body having a storage portion for storing a non-contact IC card, wherein a high magnetic permeability material layer is provided only on one surface separating the storage portion in the thickness direction. Non-contact IC card housing for use.   The portable non-contact IC card housing according to claim 3, wherein the portable non-contact IC card housing is a pass case.   The portable non-contact IC card storage body according to claim 3 or 4, wherein the high magnetic permeability material layer is made of permalloy or amorphous.

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