JP2005284862A - Ic card holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IC card holder which allows an IC card provided with a flat coil antenna and an IC chip to be attached to a mobile device having a conductive member and is prevented from being affected by the conductive member when attaching. <P>SOLUTION: An IC card holder 12 is surface-mounted on a printed wiring board in an enclosure of a mobile phone 1 and is provided with frame bodies 12a to 12c and a tabular member 12d made of a high-permeability magnetic material. The tabular member 12d made of the high-permeability magnetic material is arranged between an area which is on one side (rear side) of the IC card and doesn't have a plurality of contact terminals 12e and a surface of a structural member in the mobile phone 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an IC card holder for attaching a non-contact type IC card used for identifying a person or a product to a portable device such as a mobile phone.

Equipped with an integrated circuit (IC) with an antenna and non-volatile storage function, and transmits stored data to a reader in a non-contact manner using a near electromagnetic field or radio wave from a nearby reader as a power supply source Non-contact IC tags are attracting attention (see Patent Document 1).
The non-contact type IC tag is generally called RF-ID (Radio Frequency Identification). There are various tag shapes.

FIG. 4 is an explanatory view showing an example of a card-shaped non-contact IC tag (hereinafter referred to as a non-contact IC card). A wavy line AA ′ is a notch line, and shows an internal structure on the right side thereof.
In the figure, 6 is a non-contact IC card, 31 is a semiconductor chip, and 32 is a planar coil antenna.
If you carry a non-contact IC card 6, it is easy to lose it. However, there is an inconvenience that must be taken out at the time of use if it is put in a regular case.
Therefore, there has been announced a mobile phone that is always carried around and incorporates a small non-contact IC tag.
However, it cannot be incorporated into existing mobile phones. Also, once installed, it is difficult to remove or replace it.

Incidentally, some IC cards have a contact type having electrical contacts. There are also models of mobile phones that can be equipped with a standard contact IC card called “SD (Safety Digital) Card”. This SD card is used by being attached to a memory card connector inside a mobile phone (see Patent Document 3).
Mobile phone manufacturers purchase memory card connectors from component manufacturers and mount them on printed circuit boards.
In addition, one IC card having both contact and non-contact functions is known (see Patent Document 2).
Therefore, if a non-contact card function is incorporated into the SD card described above, the non-contact IC card can be removably incorporated into an existing mobile phone.

FIG. 5 is a schematic diagram showing an outline of a contact-type non-contact type dual-use IC card.
A wavy line BB ′ is a notch line, and shows an internal structure below it.
In the figure, 13 is a contact-type non-contact type IC card, 41 is a locking recess, 42 is a write-protecting recess, and 43 is a contact terminal.
Reference numeral 44 denotes a printed circuit board on which a planar coil antenna 45 is formed and an IC chip 46 is mounted. The mounted printed circuit board 44 is sandwiched between the front surface plate and the back surface plate and is integrally formed.
Although the IC chip 46 has both functions of an IC chip as a contact IC card and an IC chip of a non-contact IC card, it is preferable to make both function independently. In that case, separate IC chips may be mounted.

The IC chip when functioning as a contact IC card reads and writes data with an external device via the contact terminal 43. Usually, it is divided into a large-capacity flash memory and a controller IC.
On the other hand, the IC chip (smart card module) when functioning as a non-contact IC card operates the IC using the power induced in the planar coil antenna, reads the data stored in the non-volatile memory, The near electromagnetic field is load-modulated or electromagnetic waves are modulated and transmitted to the reading device.

On the other hand, when a non-contact IC tag is incorporated in a mobile phone, there is a problem that the function of the planar coil antenna is easily affected by the wiring board and shield member inside the mobile phone.
Regarding the radio wave characteristics of the non-contact IC card, it is known that if there is a conductive metal on the back side of the antenna, the magnetic field lines cannot penetrate the antenna coil surface, so that the transmission characteristics are deteriorated.
In particular, in a method of incorporating a non-contact card function into an SD card, it is difficult to ensure sufficient transmission characteristics (transmission distance) because the size of the antenna is limited by the outer shape of the SD card.

In order to cope with the above-described problems, in general, in a non-contact IC tag of a type attached to a metal conductor, a magnetic sheet made of a high magnetic permeability magnetic material is disposed on the metal conductor side, and a planar shape is formed thereon. There has been known a method of preventing deterioration of transmission characteristics by arranging an antenna coil so that lines of magnetic force pass through a magnetic sheet.
As the high magnetic permeability magnetic material, permalloy, Mn—Zn ferrite, amorphous alloy and the like are known.
Also in Patent Document 1 described above, a magnetic absorption plate made of a high permeability magnetic material is incorporated in an IC card.
However, the conventional technique is a countermeasure technique on the non-contact type IC card side. No investigation has been made on a specific device configuration for preventing the deterioration of transmission characteristics when a non-contact IC card is incorporated in a portable device.
JP 2000-113142 A JP 2001-216490 A Japanese Patent Laid-Open No. 2003-086296

  The present invention has been made to solve the above-described problems, and an IC card including a planar coil antenna and an IC chip can be attached to a portable device having a conductive member. An object of the present invention is to provide an IC card holder that is less susceptible to the influence of a sex member.

According to the present invention, in the first aspect of the present invention, an IC card including a planar coil antenna and an IC chip is slid from the insertion slot and held in the mounting position, and a portable device having a conductive member An IC card holder that is attached to and used for guiding the insertion side edge of the IC card, positioning the insertion edge, and preventing the IC card from dropping off, and the mounting position There is a member formed of a high permeability magnetic material between one side of the IC card and the mounting surface of the portable device, and the other side of the IC card at the mounting position of the housing portion is electromagnetic Is open to the public.
Therefore, since the magnetic field interlinking with the planar coil antenna built in the non-contact type IC card passes through a member formed of a high permeability magnetic material, it is hardly affected by the conductor material inside the portable device. As a result, sufficient electromagnetic characteristics (transfer distance) can be ensured even when a non-contact IC card is attached to a portable device.
The IC card holder of the present invention may be attached to the outer surface of the casing of the portable device, or may be attached to a printed circuit board or the like inside the casing. When it is attached to the outer surface of the casing of the portable device, it is desirable to attach it detachably.

In the second aspect of the invention, the planar coil antenna and / or the plurality of contact terminals and the IC card including the IC chip are slid from the insertion slot and held in the mounting position, and the conductive member is An IC card holder that is used by being attached to a portable device having an accommodating portion that guides an insertion side edge of the IC card and positions an insertion edge, and prevents the IC card from dropping off, and the accommodation A plurality of contact terminals that contact the plurality of contact terminals of the IC card at the mounting position when the IC card is provided with the plurality of contact terminals. A contact terminal, and a member formed of a high magnetic permeability magnetic material between one surface of the IC card in a region without the plurality of contact terminals and the mounting surface of the portable device, and the mounting portion of the mounting portion position The other side of the IC card is opened electromagnetically.
Therefore, the magnetic field interlinking with the planar coil antenna built in the non-contact type IC card passes through a member formed of a high magnetic permeability magnetic material, and is not easily affected by the conductor material inside the portable device. As a result, sufficient electromagnetic characteristics (transfer distance) can be ensured even when a non-contact IC card is attached to a portable device.
Since it has multiple contact terminals, it also functions as a contact IC card holder. As a result, it is not necessary to newly provide a holder for the non-contact type IC card in the portable device, so that the space saving efficiency is improved. It can also hold IC cards for both non-contact and contact type.
By the way, an outline standard is defined for a contact type IC card having a plurality of contact terminals. For example, the thickness of the “SD card” is set to 2.1 mm.
Therefore, pasting a member made of a high magnetic permeability magnetic material on the side of a non-contact type IC card having the same external shape as a contact type IC card or an IC card for both non-contact type contact type, There are many structural constraints. On the other hand, providing a member made of a high magnetic permeability magnetic material on the IC card holder side can be easily realized because there are few structural restrictions on the IC card holder side.

  According to the present invention, by providing a member formed of a high magnetic permeability magnetic material between the IC card and the portable device having the conductive member, the conductive member affects the magnetic flux passage of the planar coil antenna. Therefore, there is an effect that the deterioration of electromagnetic characteristics can be prevented.

FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
The non-contact IC card holder 5 of this embodiment is attached to the rear surface of the casing of the mobile phone 1.
1A is a mobile phone 1, FIG. 1B is a non-contact IC card holder 5 attached to the mobile phone 1, and FIG. 1C is a right side of the non-contact IC card holder 5. It is explanatory drawing of a surface.
In FIG. 1A, the mobile phone 1 has a mobile phone antenna 2, a battery case lid 3, and an IC card insertion slot 4. Inside the mobile phone 1 is a conductive member such as a printed circuit board, a shield member, or a rechargeable battery.

1B and 1C, an IC card holder 5 includes a substrate 5a, frames 5b to 5d, a sheet-like flat plate member 5e formed of a high magnetic permeability magnetic material, and an adhesive sheet 5f. Yes. The board | substrate 5a and the frame bodies 5b-5d are the nonelectroconductive synthetic resin shape | molded integrally, for example. The flat plate member 5e formed of a high magnetic permeability magnetic material is installed on the front side of the substrate 5a by a method such as adhesion.
The flat plate member 5e formed of the high magnetic permeability magnetic material does not need to be installed on the entire surface facing the non-contact type IC card 6 shown in FIG. It may be provided in a region surrounded by the outermost periphery of the planar coil antenna 32 shown in FIG. 4, provided in a part thereof, or extended from a part of the region to a region exceeding the outermost periphery.

A double-sided adhesive sheet 5f is affixed to the back side of the substrate 5a. With this double-sided adhesive sheet, the non-contact IC card holder 5 is attached to, for example, the battery case lid 3 on the back surface of the mobile phone 1 and can be removed.
If the IC card holder 5 is formed integrally with the battery case lid, the IC card holder is also attached according to the attachment of the battery case lid.

The non-contact IC card holder 5 slides the non-contact IC card 6 shown in FIG. 4 from an insertion slot (slot) formed by the opposing frames 5b and 5c and holds it in the mounting position.
The frame bodies 5b and 5c guide both side edges of the non-contact IC card 6 to be inserted, the frame body 5d positions the insertion edge, and the frame bodies 5b to 5d rise from the substrate 5a, and the edge portions are Since it is bent vertically, the contactless IC card 6 is prevented from falling off.
The flat plate member 5e formed of a high magnetic permeability magnetic material is disposed between one surface (back surface) of the non-contact IC card 6 at the mounting position and the mounting surface (back surface) of the mobile phone 1.
Further, the IC card holder 5 is electromagnetically opened because it is not covered with a conductive metal on the other surface (front surface) of the non-contact IC card 6 at the mounting position.
Therefore, since the magnetic lines of force passing through the planar coil antenna built in the non-contact IC card 6 are not blocked, the deterioration of electromagnetic characteristics can be prevented.

In the specific example described above, the IC card housing portion is constituted by the integrally molded synthetic resin material of the substrate 5a and the frames 5b, 5c, 5d. Instead of this, the substrate 5a may be made of a conductive metal, or a synthetic resin material and a conductive metal may be bonded together.
Alternatively, for example, the frames 5b, 5c, 5d are integrated into a transparent soft synthetic resin, and the substrate 5a, which is also a soft synthetic resin, is heat-melted in three directions except for the insertion port. The same function may be realized by wearing.

FIG. 2 is a schematic diagram showing a second embodiment of the present invention.
In this embodiment, a holder for an existing contact IC card (SD card) that is surface-mounted on a structural member (for example, a printed circuit board) inside the housing of the mobile phone 1 is a non-contact IC card. It also serves as a holding tool.
Usable IC cards include a conventional contact IC card having a plurality of contact terminals and an IC chip, a non-contact IC card having the same outer shape as an existing contact IC card, and an explanation with reference to FIG. The non-contact contact type dual-use IC card 13 includes a planar coil antenna, a plurality of contact terminals, and an IC chip.

2A is an explanatory view showing the right side surface of the mobile phone 1, FIG. 2B is an IC card holder 12, and FIG.
In FIG. 2A, reference numeral 11 denotes an IC card (SD card) accommodating portion. In the example shown in the figure, an IC card insertion slot 4 is provided on the right side of the mobile phone 1 near the back.
In FIG. 2B, the IC card holder 12 of this embodiment is, for example, an integrally molded non-conductive synthetic resin frame 12a to 12c and a sheet shape formed of a high magnetic permeability magnetic material. The flat plate member 12d is provided. The frames 12a to 12c are arranged in a “U” shape (U shape).
The contact-type non-contact type IC card 13 shown in FIG. 5 is slid from the insertion opening formed by the opposing frame bodies 12a, 12b and held in the mounting position. The frame bodies 12a and 12b guide the insertion side edge of the contact-type non-contact type IC card 13 to be inserted, and the frame body 12c positions the insertion edge. Since the frame bodies 12a to 12c rise from the mounting surface and the edges are bent vertically, the IC cards 13 are prevented from falling off.

The frame body 12c for positioning the insertion edge of the IC card supports a plurality of contact terminals. When the IC card 13 is in the mounting position, a plurality of contact terminals 12e that are in contact with the plurality of contact terminals of the IC card 13 are provided toward the insertion slot.
The flat plate member 12d formed of a high magnetic permeability magnetic material is a single side (back side) of an IC card (for example, a contact-type non-contact type dual-use IC card 13) at the mounting position, and is a region without a plurality of contact terminals 12e. And the surface of the structural member in the mobile phone 1.

The flat plate member 12d formed of the high magnetic permeability magnetic material does not need to be installed on the entire surface facing the contact-type non-contact type dual-purpose IC card 13 shown in FIG. It may be provided in a region surrounded by the outermost periphery of the planar coil antenna 45 shown in FIG. 5, provided in a part thereof, or extended from a part thereof to a region exceeding the outermost periphery.
Moreover, the IC card holder 12 does not cover the other surface (front surface) of the contact-type non-contact type IC card 13 in the mounting position with a conductive member. Naturally, the casing of the mobile phone 1 is also not covered with the conductive member in the above-described region, and this region is open electromagnetically.
Therefore, since the magnetic lines of force passing through the planar coil antenna built in the non-contact IC card 6 are not blocked, the deterioration of electromagnetic characteristics can be prevented.

FIG. 3 is an explanatory diagram showing the embodiment shown in FIG. 2 in an enlarged manner.
In the figure, parts similar to those in FIG. Detailed illustration is omitted.
FIG. 3A is an explanatory view showing a state where the IC card holder 12 shown in FIG. 2 is surface-mounted on the printed circuit board 21 in the mobile phone 1. The end portions of the plurality of contact terminals 12e installed on the frame body 12c are collectively hatched.
Inside the frame body 12a, the contact-type non-contact type dual-use IC card 13 is held in the mounting position by abutting against the locking concave portion 41 of the contact-type non-contact-type dual-use IC card 13, and the IC card is pressed. A mechanism is provided to eject the IC card by operation.
On the other hand, inside the frame 12b, there is a switch mechanism that abuts against the write prohibiting concave portion 42 of the contact-type non-contact type dual-use IC card 13 and prohibits writing to the IC chip when used as a contact-type IC card. Is provided.

The frame bodies 12a to 12c may be partially covered with a cover member. In this case, for the first time, the frame body 12 guides the insertion side edge of the contact-type non-contact type dual-use IC card 13, positions the insertion end edge, and prevents dropping by being covered with the cover member. Good.
At that time, the cover member covers the peripheral edge of the open side of the contact-type non-contact type IC card 13 (the front side with the label in FIG. 3) in a U-shape, so that a non-conductive synthetic resin is used. Is preferred. However, it is desirable to form the cover member with a conductive metal material in order to have an electrostatic shielding effect. In particular, it is preferable to cover the area where the electrode terminals 43 of the contact-type non-contact type IC card 13 are present, that is, the open side of the area where the contact terminals 12e are located on the IC card holder 12 side, with a conductive metal material.

As shown in FIG. 3B, a structure in which frame members 12a to 12c and a flat plate member 12d formed of a high magnetic permeability magnetic material are combined is used as a memory card connector-shaped IC card holding member 12. Can do. The device manufacturer may mount the IC card holder 12 on the printed board 21 on which the wiring pattern is formed.
Alternatively, as shown in FIG. 3C, a member without the flat plate member 12d formed of a high magnetic permeability magnetic material may be used as the memory card connector-shaped IC card holding member 12.
The flat plate member 12d formed of a high magnetic permeability magnetic material is attached to the printed board 21 by a method such as adhesion. The device manufacturer mounts the IC card holding member 12 without the flat plate member 12d formed of a high magnetic permeability magnetic material on such a printed circuit board 21.
In the latter case, the IC card holding member 12 including the printed circuit board 21 can also be said.

In the above description, the case where the IC card holder is attached to the surface of the casing of the mobile phone or inside the casing has been described as a specific example, but the present invention is not limited to this.
For example, you may attach to the portable apparatus which has electroconductive members, such as PDA (Personal Digital Assistant).

It is a schematic diagram which shows the 1st Embodiment of this invention. It is a schematic diagram which shows the 2nd Embodiment of this invention. It is explanatory drawing which expands and shows embodiment shown in FIG. It is explanatory drawing which shows an example of a card-shaped non-contact-type IC card. It is a schematic diagram which shows the outline | summary of a contact-type non-contact-type dual-use IC card.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 5 ... IC card holder, 6 ... Non-contact type IC card, 11 ... IC card storage part, 12 ... IC card holder, 13 ... Contact type non-contact type IC card

Claims (2)

An IC card holding device that is used by being attached to a portable device having a conductive member, which holds an IC card including a planar coil antenna and an IC chip by sliding it from the insertion slot and holding it in the mounting position. ,
A guide portion that guides the insertion side edge of the IC card and positions the insertion edge, and a housing portion that prevents the IC card from dropping off,
Having a member formed of a high magnetic permeability magnetic material between one side of the IC card at the mounting position and the mounting surface of the portable device;
The other side of the IC card in the mounting position of the housing portion is electromagnetically opened.
IC card holder characterized by that. An IC card including a planar coil antenna and / or a plurality of contact terminals and an IC chip is slid from the insertion slot and held at the mounting position, and is used by being attached to a portable device having a conductive member. IC card holder,
A guide portion that guides the insertion side edge of the IC card and positions the insertion edge, and a housing portion that prevents the IC card from dropping off,
When the IC card is provided with the plurality of contact terminals, the contact portion is in contact with the plurality of contact terminals of the IC card at the mounting position. A plurality of contact terminals;
A member formed of a high magnetic permeability magnetic material between one surface of the IC card in a region without the plurality of contact terminals and the mounting surface of the portable device;
The other side of the IC card in the mounting position of the housing portion is electromagnetically opened.
IC card holder characterized by that.

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