JP2007179142A - Sheet with contactless ic, and information recording medium with contactless ic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contactless IC inlet and a contactless IC card that have a reinforcing member placed as to increase mechanical strength against bending, pressure and the like and facilitate the control of inclination and position (angle or the like) at placement in the contactless IC inlet, the contactless IC card or the like with a reinforcing member placed on an IC chip to protect it from bending and other damage. <P>SOLUTION: The contactless IC card 2, which has the IC chip 20 and an antenna built in a card base 32, has the reinforcing member 10 placed on the IC chip 20 via sealing resin to protect the IC chip 20. The reinforcing member 10 is in the shape of a tray having a flange 14 around an opening and having a constant depth recess 12. The IC chip 20 is entirely fitted in the recess 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an IC chip that stores unique identification information, a sheet with a non-contact IC provided with an antenna that performs non-contact communication, and an information recording medium with a non-contact IC. In particular, the present invention relates to a non-contact IC-attached sheet provided with a reinforcing member for protecting the IC chip from breakage due to external stress (bending, pressing, etc.) and an information recording medium with a non-contact IC.

  In a conventional IC card with a contact (contact type), the destruction of the IC chip or the communication failure occurs due to the influence of static electricity on the contact or dirt. In the case of a non-contact IC card having an IC chip with an antenna for non-contact communication, it is resistant to static electricity and dirt, and there is no accident such as destruction of the IC chip or poor communication. Has been applied to various fields.

  The non-contact IC card generally has a thickness of about 0.76 mm depending on the size specified by ISO / JIS. Therefore, it is necessary to process an electronic component such as an IC chip or an antenna that is built in an extremely thin film. On the other hand, non-contact IC cards are usually carried around in commuter passes, card cases, wallets, etc., and are often subjected to bending, strong pressing, and other electronic components such as built-in IC chips. In order to prevent breakage of an IC chip that is easily broken, there is a conventional technique in which a reinforcing plate is provided on the IC chip.

  A specific description will be given of what is provided with the reinforcing plate. For example, as shown in a side sectional view of FIG. 11, the IC chip (103) is mounted on a substrate, and a sealing resin (102) is interposed therebetween. And a flat reinforcing plate (101) is provided.

  As the sealing resin (102), an epoxy resin containing a filler is often used. The sealing resin (102) is dropped on the IC chip (103) by a potting method or the like, and then a reinforcing plate (101) is placed. In this state, the adhesive is cured in a thermostatic bath, and a non-contact IC inlet with a reinforcing plate (106).

  However, in the non-contact IC card in which the non-contact IC inlet (106) with the reinforcing plate is mounted in the card base (105), for example, as shown in the side sectional view of FIG. Because the force is applied to the non-contact IC inlet (106) with a reinforcing plate and the flat reinforcing plate (101) is placed, there is a risk that the IC chip (103) in the inside will be destroyed. Therefore, a non-contact IC inlet (106) with a reinforcing plate having higher strength has been desired.

  In addition, the strength of the non-contact IC inlet is improved by providing a cap-shaped reinforcing plate to improve the strength (for example, see Patent Document 1) or by attaching a member to protect the reinforcing plate to the reinforcing plate. There is a method to try (see, for example, Patent Document 2).

The above prior art documents are shown below.
JP-A-11-11060 Japanese Patent Laid-Open No. 11-11061

  However, the reinforcing plate on these IC chips is made of a thin material such as resin, ceramic, or metal. However, the reinforcing plate itself is deformed by a simple flat plate, and a sufficient reinforcing effect cannot be obtained. It was. In addition, by making the reinforcing plate into a cap shape, it is conceivable that the force is dispersed around the cap with respect to the force from the upper part of the IC chip. It deforms itself and becomes the same state as when it is flat.

  Furthermore, with a simple thin flat plate (flat reinforcing plate), it is difficult to control the inclination and position of the reinforcing plate when mounting the flat reinforcing plate on the IC chip (mounting with a mounting device). There is a problem that the bill surface where the reinforcing plate is placed lacks smoothness, and printing (printing defect) or the like on the bill surface is unsatisfactory.

  The present invention solves the problems of the prior art, and the object of the invention is at least one IC chip and an antenna, and reinforcement for protecting the IC chip from breakage due to bending or the like. In the non-contact IC-attached sheet and the non-contact IC-attached information recording medium on which the member is placed, the reinforcement that improves the mechanical strength against bending, pressing, and the like, and can easily control the tilt and position at the time of placement. The object is to provide a non-contact IC-attached sheet (non-contact IC inlet) on which members are placed, and a non-contact IC-attached information recording medium (non-contact IC card, dual interface card, etc.).

  In order to achieve the above object in the present invention, first, in the invention of claim 1, at least one IC chip and an antenna that performs non-contact communication on the IC chip are provided on a sheet serving as a support. In the sheet with non-contact IC, a reinforcing member for protecting the IC chip is placed on the IC chip via a sealing resin, and the reinforcing member has a tray shape having a recess, and the IC is placed in the recess. The entire chip is fitted into a non-contact IC-attached sheet.

  In the invention of claim 2, the depth of the concave portion of the reinforcing member conforms to the thickness of the IC chip. The sheet with non-contact IC according to claim 1 is provided.

  According to a third aspect of the present invention, the contour shape of the outer edge of the concave portion of the reinforcing member is a circular shape having a size that can accommodate a square-shaped IC chip. This is a sheet with a non-contact IC.

  According to a fourth aspect of the present invention, the shape of the contour of the outer edge of the concave portion of the reinforcing member is a size that can accommodate a square-shaped IC chip and is substantially the same shape. It is a sheet with the non-contact IC described.

  According to a fifth aspect of the present invention, the reinforcing member is made of metal, and is provided with a notch so as not to contact a conductor constituting an electric component such as an antenna wiring. A sheet with a non-contact IC according to any one of the above.

According to a sixth aspect of the present invention, there is provided a noncontact IC-attached information recording medium including at least one IC chip and an antenna for performing noncontact communication with the IC chip. A reinforcing member for protecting the IC chip is placed via a stop resin, the reinforcing member is in a tray shape having a recess, and the entire IC chip is fitted into the recess. This is an information recording medium with IC.

  According to a seventh aspect of the present invention, there is provided the non-contact IC-attached information recording medium according to the sixth aspect, wherein the depth of the concave portion of the reinforcing member conforms to the thickness of the IC chip.

  The invention according to claim 8 is characterized in that the shape of the contour of the outer edge of the concave portion of the reinforcing member is a circular shape that can accommodate a square IC chip. This is an information recording medium with a non-contact IC.

  The invention according to claim 9 is characterized in that the shape of the contour of the outer edge of the concave portion of the reinforcing member is substantially the same shape so that a square IC chip can be accommodated. The information recording medium with non-contact IC described is used.

  Furthermore, in the invention of claim 10, the reinforcing member is made of metal, and is provided with a notch so as not to contact a conductor constituting an electric component such as an antenna wiring. 9. A non-contact IC-attached information recording medium according to any one of 9 above.

  Since this invention is the above structure, there exist the following effects.

  That is, according to the invention according to claim 1, in the sheet with non-contact IC provided with at least one IC chip on the sheet to be a support and an antenna for the IC chip to perform non-contact communication, A reinforcing member for protecting the IC chip is placed on the IC chip via a sealing resin, and the reinforcing member is formed in a tray shape having a concave portion. Therefore, compared with a conventional flat reinforcing plate, Since the mechanical strength against pressure from the surface is improved and the recess outer edge of the reinforcing member can be placed parallel to the sheet base material, the surface when carded becomes smooth and printing on it It is possible to provide a non-contact IC-attached sheet that does not have printing defects such as chipping.

  According to the second aspect of the invention, the depth of the concave portion of the reinforcing member conforms to the thickness of the IC chip, so that the entire IC chip is placed so as to cover the concave portion of the reinforcing member. Since the entire IC chip is fitted into the recess and the entire IC chip is firmly fixed, the sheet with a non-contact IC that makes it easy to control the inclination and position of the reinforcing member can be obtained.

  According to the third aspect of the present invention, the shape of the contour of the outer periphery of the concave portion of the reinforcing member is a circular shape having a size that can accommodate a rectangular IC chip. When mounting), there is no need to consider the orientation of the reinforcing member with respect to the square IC chip, so the mounting of the reinforcing member on the square IC chip (mounting with a mounting device) is simpler with a non-contact IC. It can be a sheet.

  According to the fourth aspect of the present invention, the shape of the contour of the outer edge of the concave portion of the reinforcing member is such that the rectangular IC chip can be accommodated in the same shape. In mounting, the entire IC chip is firmly fixed in the recess, so that a sheet with a non-contact IC that makes it easy to control the inclination and position of the reinforcing member can be obtained.

Furthermore, according to the invention according to the fifth aspect, the reinforcing member is formed of a metal, so that the mechanical strength against bending from the outside or pressing from above is further improved, and the reinforcing member is reinforced. Since the member is made of a conductive metal, a cutout is provided in a part of the periphery of the recess so as not to contact a conductor forming an electrical component such as an antenna wiring, so that the reinforcing member does not contact the antenna. It is possible to provide a non-contact IC-attached sheet capable of preventing short circuiting and preventing air bubbles accumulated in the sealing resin in the recess of the reinforcing member during sealing.

  Further, according to the invention of claim 6, the reinforcing member placed on the IC chip in the card base via the sealing resin is in the shape of a tray having a concave portion, so that compared with a conventional flat reinforcing plate. Since the mechanical strength against bending and pressing from the top is improved and it can be placed parallel to the card base, the surface when carded becomes smooth, and the printing on it is lacking. It is possible to provide an information recording medium with a non-contact IC that looks good without printing defects.

  According to the seventh aspect of the present invention, when the recess of the reinforcing member conforms to the thickness of the IC chip, the entire IC chip is placed so as to cover the recess of the reinforcing member. Since the entire IC chip is fitted in the recess and the entire IC chip is firmly fixed, the information recording medium with a non-contact IC that makes it easy to control the inclination and position of the reinforcing member can be obtained.

  According to the invention according to claim 8, the shape of the contour of the outer edge of the concave portion of the reinforcing member is a circular shape having a size that can accommodate a square-shaped IC chip. When mounting), there is no need to consider the orientation of the reinforcing member with respect to the square IC chip, so the mounting of the reinforcing member on the square IC chip (mounting with a mounting device) is simpler with a non-contact IC. It can be used as an information recording medium.

  According to the ninth aspect of the present invention, the shape of the contour of the outer edge of the concave portion of the reinforcing member is substantially the same size as the rectangular IC chip can be accommodated. In the mounting), the entire IC chip is firmly fixed in the concave portion, so that the information recording medium with a non-contact IC that makes it easy to control the inclination and position of the reinforcing member can be obtained.

  Furthermore, according to the invention of claim 10, the reinforcing member is formed of a metal, so that the mechanical strength against bending from the outside or pressing from the top is further improved, and the reinforcing member is reinforced. Since the member is made of a conductive metal, a notch is provided in a part of the periphery of the recess so as not to contact a conductor forming an electric part such as an antenna wiring, so that the reinforcing member does not contact the antenna. In addition, a non-contact IC-attached information recording medium that can prevent short-circuiting and also prevent bubbles accumulated in the sealing resin in the recess of the reinforcing member during sealing can be obtained.

  Therefore, the present invention is excellent in applications such as railway commuter pass as a non-contact IC card having an IC chip storing unique identification information and an antenna for the IC chip to perform non-contact communication. It has a practical effect.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  The non-contact IC-attached sheet of the present invention includes, for example, an antenna (not shown) on a relatively strong sheet base material (30) such as a polyethylene terephthalate (PET) film, as shown in the side sectional view of FIG. After the IC chip (20) is placed and an epoxy-based sealing resin (not shown) is dropped on the IC chip (20), the IC chip (20) has a recess (12) at the center, and the recess (12). It is a non-contact IC inlet (1) mounted so that the tray-shaped reinforcement member (10) provided with the collar part (14) may be covered with the recessed part (12).

  Further, the non-contact IC-attached information recording medium of the present invention has an antenna (not shown) in a card base (32) made of amorphous polyester resin or the like, for example, as shown in a side sectional view of FIG. And an IC chip (20), and the IC chip (20) has a recess (12) in the center and a collar (14) at the periphery of the recess (12). A non-contact IC card (2) in which a member (10) is placed (mounted) so as to be covered with a recess (12) via an epoxy-based sealing resin (not shown).

  As another example of the information recording medium with a non-contact IC of the present invention, for example, as shown in the side sectional view of FIG. 3, the non-contact IC inlet (1) shown in FIG. It can also be set as the non-contact IC card (2) of the form mounted in (1).

  Furthermore, as another example of the information recording medium with a non-contact IC of the present invention, for example, as shown in a perspective view of FIG. 4A and a cross-sectional view of FIG. An antenna (26) and an IC chip (20) are placed on a card base (32) made of amorphous polyester resin, etc., and the IC chip (20) has a recess (12) in the center, A tray-shaped reinforcing member (10) having a flange (14) on the periphery of the recess (12) is placed so as to be covered with the recess (12) via an epoxy-based sealing resin (not shown). A non-contact type in which a protective layer (24) for uniformizing the thickness of the card is applied on the placed (mounted) material using UV curable resin and the like, and a concealing layer (25) made of white ink for screen is applied thereon. It can also be an IC card (2).

  Thus, the reinforcing member (10) placed on the IC chip (20) has a recess (12) in the center, and has a tray shape with a flange (14) at the periphery of the recess (12). Therefore, for example, compared to the conventional flat reinforcing plate (101) shown in FIG. 11, the mechanical strength against bending and pressing from above is improved, and the collar (14) is provided on the periphery of the recess (12). Since it can be mounted (mounted) in parallel to the sheet base material (30) or the card base (32), the position accuracy of the reinforcing member (10) is good and there is no inclination, etc. (32) A non-contact IC card (2) and a non-contact IC-attached information recording medium in which the surface of the card mounted in (32) is smooth, and printing or printing on the card does not cause defects, The collar part (1 ) May seat base (30) or be firmly adhered to the card base (32).

  An example of the tray-shaped reinforcing member (10) will be described in more detail. For example, as shown in the perspective view of FIG. 5A and the BB plane of FIG. A tray-shaped reinforcing member in which a circular concave portion (12) is provided at the center of a thin plate having a constant thickness B and a thickness (D), and a collar portion (14) is provided at the periphery of the concave portion (12). (10).

  The other examples of the tray-shaped reinforcing member (10) will be described in more detail. For example, as shown in a perspective view of FIG. 6A and a BB plane of FIG. A tray-shaped reinforcement in which (B) is constant and a rectangular recess (12) is provided in the center of a thin plate (D), and a flange (14) is provided at the periphery of the recess (12). It is a member (10).

  The material of the tray-like reinforcing member (10) is preferably a metal that is thin but has high strength and is easy to process. Examples thereof include SUS (stainless steel), iron, copper, and aluminum, and the thickness (D ) Varies depending on the material, but in the case of SUS (stainless steel), for example, the strength against bending or pressing when the concave portion (12) is formed in the center of about 50 μm and the workability such as the formation of the concave portion (12). In view of this, it can be obtained by a pressing method, a punching method, or the like.

  Examples of the sheet substrate (30) constituting the non-contact IC inlet (1) include tough films such as polyethylene terephthalate (PET) having a thickness of about 25 μm, polyethylene phthalate (PEN), and polyimide (PI). , And can be appropriately selected depending on its use.

  The card base (32) constituting the non-contact IC card (2) may be polyvinyl chloride, but in recent years, an environmentally friendly amorphous polyester resin (PET-G: yeast). Manmade Chemical) is the mainstream. In the case shown in FIGS. 4 (a) and 4 (b), polyethylene terephthalate (PET) having a thickness of about 250 μm can be used.

  As the sealing resin for sealing the periphery of the IC chip (20), an epoxy resin is mainly used as described above. In addition, a silicone resin, a phenol resin, a polyimide resin, polyphenylene sulfite, or the like is used. It can be sealed by a transfer molding method or a potting method.

  Moreover, generally the antenna (26) can form the antenna of a desired pattern by etching the copper foil and aluminum foil which were affixed on the sheet | seat base material (30) used as a support body. Furthermore, an antenna having a desired pattern can be obtained by screen printing using conductive ink such as silver paste.

  Moreover, in the invention which concerns on the said Claim 2 and Claim 7, the depth (B) of the recessed part (12) provided in the center of the reinforcement member (10) shown in FIG. 20), about 50 to 200 μm is preferable. By setting the depth (B) to this level, for example, as shown in FIG. 10) When mounting to cover the recess (12), the entire IC chip (20) is fitted into the recess (12), and the flange (14) at the periphery of the recess is in close contact with the sheet substrate (30). Then, the collar part (14) and the sheet base material (30) come to adhere firmly. Further, by setting the depth (B) to such a degree, the non-contact IC inlet (1) and the non-contact IC card (2) having sufficient mechanical strength against bending and pressing can be obtained.

  Further, in the inventions according to claim 3 and claim 8, for example, as shown in the top view of FIG. 7, the concave portion of the tray-shaped reinforcing member (10) having a circular collar portion (14) on the peripheral edge of the concave portion. The shape of the opening is such that the square IC chip (20) can be accommodated and the four corners (22) are in contact with each other.

  In this way, the shape of the contour of the peripheral edge of the concave portion of the reinforcing member (10) is a square shape that fits the square IC chip (20) and is in contact with the four corners (22). When the reinforcing member (10) is placed on the IC chip (20) (mounted by the mounting device), it is not necessary to consider the orientation of the reinforcing member (10) with respect to the rectangular IC chip (20). Placing the reinforcing member (10) on the shaped IC chip (20) (mounting by a mounting device) can be simplified.

  Further, in the inventions according to claim 4 and claim 9, for example, as shown in the top view of FIG. 8, the tray-shaped reinforcing member (10) having a substantially circular collar portion (14) on the periphery of the concave portion. The contour shape of the outer edge of the recess is substantially the same as the shape of the square IC chip (20), and is a shape into which the entire square IC chip (20) is fitted, that is, a square shape.

Thus, by making the shape of the concave opening of the reinforcing member (10) substantially the same as the shape of the square IC chip (20) and the shape into which the entire square IC chip (20) is fitted, When the reinforcing member (10) is placed on the square IC chip (20) (mounted by the mounting device), the entire square IC chip (20) is firmly fitted and fixed in the square recess (12). As a result, it is possible to easily control the inclination and the position of the reinforcing member (10).

  In the inventions according to claims 5 and 10, for example, as shown in the perspective view of FIG. 9, the reinforcing member (10) is a thin metal plate and includes the collar portion (14). A notch (16) for drawing out the terminals of the two antennas (26) is provided in part of the periphery of the recess (12) of the circular reinforcing member (10). The engraving prevents the conductive reinforcing member (10) made of metal from coming into contact with the two antennas (26) to prevent the antenna (26) from being short-circuited, and to reinforce the reinforcing member (10) at the time of sealing. The non-contact IC inlet (1) shown in FIG. 1 and the non-contact IC card (2) shown in FIG. 2 can also be used to prevent the accumulation of bubbles mixed in the sealing resin in the recess (12).

  Further, for example, as shown in the perspective view of FIG. 10, the reinforcing member (10) is made of a thin metal plate, and has a concave peripheral edge of the rectangular reinforcing member (10) including the collar portion (14). Two notches (16) for drawing out the terminals of the two antennas (26) are provided in the part, and by forming the notches (16), conductive reinforcing members made of metal ( The non-contact IC inlet (1) shown in FIG. 1 and the non-contact IC card (2) shown in FIG. 2 may be used in which 10) does not contact the two antennas (26).

  The non-contact IC-attached sheet and the non-contact IC-attached information recording medium of the present invention on which the tray-like reinforcing member having the concave portion having a certain depth is mounted are the non-contact IC inlet and the non-contact card. In addition, for example, an IC card (referred to as a hybrid card or a dual interface card) that combines a contact type (with external terminal) IC card and a non-contact type (without external terminal) IC card depending on interface means, etc. It also applies to.

It is explanatory drawing which represented the example of the sheet | seat with a non-contact IC of this invention in the side cross section. It is explanatory drawing showing the example of the information recording medium with a non-contact IC of this invention in the side cross section. It is explanatory drawing which represented the other example of the information recording medium with a non-contact IC of this invention in the cross section. The other example of the information recording medium with a non-contact IC of this invention is demonstrated, (a) is the perspective view, (b) is a sectional side view showing the BB surface of (a). is there. The sheet | seat with a non-contact IC of this invention and an example of the reinforcement member mounted in the information recording medium with a non-contact IC are demonstrated, (a) is the perspective view, (b) is (a) It is a sectional side view showing the BB surface of). The sheet | seat with a non-contact IC of this invention and the other example of the reinforcement member mounted in the information recording medium with a non-contact IC are demonstrated, (a) is the perspective view, (b) is ( It is a sectional side view showing the BB surface of a). It is a top view when an IC chip is mounted on the reinforcing member of one example mounted on the non-contact IC-attached sheet and the non-contact IC-attached information recording medium of the present invention. It is a top view when an IC chip is placed on the non-contact IC-attached sheet of the present invention and another example of the reinforcing member mounted on the non-contact IC-attached information recording medium. It is a perspective view explaining the form of the reinforcing member mounted in the sheet | seat with a non-contact IC of this invention, and an information recording medium with a non-contact IC. It is a perspective view explaining the other form of the reinforcement member mounted in the sheet | seat with a non-contact IC of this invention, and the information recording medium with a non-contact IC. It is a sectional side view explaining the conventional non-contact IC inlet with a reinforcement board. It is a sectional side view explaining the conventional non-contact IC card with a reinforcement board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Non-contact IC inlet 2 ... Non-contact IC card 10 ... Reinforcing member 12 ... Recessed member recess 14 ... Reinforcing member collar 16 ... Notch 20 ... IC chip 22 ... IC chip 4 squares 24 ... protective layer 25 ... concealment layer 26 ... antenna 30 ... sheet base material 32 ... card base 101 ... reinforcing plate 102 of conventional non-contact IC inlet ... sealing of conventional non-contact IC inlet Stop resin 103 ... Conventional non-contact IC inlet IC chip 104 ... Conventional non-contact IC inlet substrate 105 ... Conventional non-contact IC inlet card base 105 ... Conventional non-contact IC inlet B ... Reinforcement Depth of concave part of member D ... thickness of reinforcing member

Claims (10)

  In a non-contact IC-attached sheet provided with at least one IC chip and an antenna through which the IC chip performs non-contact communication on a sheet serving as a support, the IC is placed on the IC chip via a sealing resin. A sheet with a non-contact IC, wherein a reinforcing member for protecting a chip is placed, the reinforcing member is in a tray shape having a concave portion, and the entire IC chip is fitted into the concave portion.   The non-contact IC-attached sheet according to claim 1, wherein the depth of the concave portion of the reinforcing member conforms to the thickness of the IC chip.   3. The sheet with non-contact IC according to claim 1, wherein the shape of the contour of the outer edge of the concave portion of the reinforcing member is a circular shape having a size that can accommodate a square-shaped IC chip.   3. The sheet with non-contact IC according to claim 1, wherein the shape of the contour of the outer edge of the concave portion of the reinforcing member is substantially the same size as a square IC chip.   5. The non-contact IC according to claim 1, wherein the reinforcing member is made of metal and has a cutout so as not to contact a conductor forming an electrical component such as an antenna wiring. Attached sheet.   In an information recording medium with a non-contact IC that includes at least one IC chip and an antenna through which the IC chip performs non-contact communication, the IC chip is placed on the IC chip via a sealing resin. A noncontact IC-attached information recording medium, wherein a reinforcing member for protection is placed, the reinforcing member has a tray shape having a concave portion, and the entire IC chip is fitted into the concave portion.   7. The information recording medium with a non-contact IC according to claim 6, wherein the depth of the concave portion of the reinforcing member conforms to the thickness of the IC chip.   8. The information recording medium with a non-contact IC according to claim 6, wherein the shape of the contour of the outer edge of the concave portion of the reinforcing member is a circular shape having a size that can accommodate a square-shaped IC chip.   8. The information recording medium with non-contact IC according to claim 6, wherein the contour of the outer edge of the concave portion of the reinforcing member has a size that can accommodate a rectangular IC chip and is substantially the same shape. .   10. The non-contact IC according to claim 6, wherein the reinforcing member is made of metal and has a notch so as not to contact a conductor constituting an electrical component such as an antenna wiring. Additional information recording medium.

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