JP4063004B2 - Combination IC card - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an IC card used for a credit card, a cash card, a telephone card, a transportation use card or the like in the fields of finance / communications / transportation, and the like. In combination IC cards with both contact-type functions, by devising the routing of the copper wire at the joint that connects the IC module and the antenna, even if external stress is applied to the card board, it is difficult to crack, The present invention relates to a combination IC card having high folding strength.
[0002]
[Prior art]
Conventionally, in the fields of credit cards, cash cards, etc., as an alternative to a magnetic card, an IC card having an IC module containing an IC memory such as a microprocessor (MPU) or a data memory on a card substrate has an information storage capacity. Has been attracting attention and being used little by little because of its very large size and high security.
[0003]
In particular, in recent years, the use of IC cards has rapidly been studied or put into practical use in various fields such as the financial industry and the distribution industry due to the fact that the amount of information on IC cards is large and that there is security. Yes.
[0004]
For example, there has been a rapid increase in the problem that a consumer suffers a great deal of damage by forging a magnetic card used for a credit card or a telephone card. Under such circumstances, the use of IC cards is rapidly progressing as a response to security needs.
[0005]
In addition, for companies, based on comprehensive judgment, emphasis is placed on the benefits of rationalization, and for reasons such as improving user convenience, finance, distribution, transportation, transportation, manufacturing, logistics, Use in the administrative field is increasing.
[0006]
The types of IC cards are also diversified. For example, classification can be performed based on whether or not a CPU (central processing unit) is built in the IC card, or by a method of transmitting and receiving data between the IC chip mounted on the IC card and an external device.
[0007]
In an IC card, an IC chip is embedded in a card made of a shape and material similar to a magnetic card.
[0008]
The basic configuration of the IC chip is composed of a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Read / Write Memory), and EEPROM (Electrically Rewritten / Eraseable Memory). Yes.
[0009]
The CPU (central processing unit) is composed of a calculation unit that calculates data and a control unit that exchanges data with the outside.
[0010]
The ROM (read only memory) is a non-volatile storage device that does not lose data even when the power is turned off. In an IC card, a ROM stores a small program at a high speed suitable for the IC card. The CPU operates according to this program.
[0011]
The ROM includes a mask ROM and a PROM. The mask ROM is a memory in which the manufacturer changes the mask pattern during the manufacturing process and writes the stored contents. Therefore, it cannot be erased after manufacture.
[0012]
The mask ROM is used for data storage, microprogram storage, decoders, code conversion, monitor programs, and the like.
[0013]
The PROM is a ROM that can be written by the user on anything that has not been written. Since writing is possible only once, when rewriting information, all stored data must be erased.
[0014]
According to the erasing method, it is roughly divided into EAROM and EPROM. The EAROM is erased electrically. The EPROM is erased with ultraviolet rays.
[0015]
Actually, when the PROM is used for an IC card, information can be written once when the card is issued. However, once recording is performed, data cannot be changed or deleted as in a normal ROM.
[0016]
When the EPROM is also used for an IC card, the memory content cannot be rewritten because the memory in the card cannot be irradiated with ultraviolet rays.
[0017]
The RAM is a readable / writable memory, but is a volatile memory that loses data when the power is turned off. The IC chip is used as a data processing memory that is temporarily used when the CPU performs operations such as calculations.
[0018]
The EEPROM is a ROM that can be electrically rewritten and erased. It is a non-volatile storage device that does not lose its data even when the power is turned off, and is used as a data storage memory in an IC card.
[0019]
For example, there is a memory card that has only a data recording memory such as an EEPROM in an IC chip and does not have a CPU (central processing unit) and basically has only a function of storing data.
[0020]
The memory card was first developed as an IC card and includes a memory such as a ROM (Read Only Memory) for storing data.
[0021]
The data storage capacity is significantly increased from 500 characters to 16,000 characters or more with respect to 80 characters of the magnetic card. As the memory, PROM, EPROM, EEPROM or the like is used.
[0022]
Next, since a general IC card has a CPU built in an IC chip and has an arithmetic function, it can be determined whether or not access is correct when reading and writing data, and high security can be realized.
[0023]
In order to read and write data in the IC chip, an interface with the outside is necessary. Further, since the IC card does not contain a battery, it is necessary to supply power for operating the IC chip from the outside.
[0024]
For this reason, IC cards include contact IC cards and non-contact IC cards due to differences in interface with external devices in addition to the classification based on the presence or absence of a CPU.
[0025]
Contact IC cards are the most common type of IC cards that receive power supply by directly contacting the external terminals exposed on the card surface with the terminals on the reader / writer side, and perform data communication with external devices. It is.
[0026]
Next, the non-contact type IC card is an IC card that has rapidly spread in recent years. There are no external terminals on the card surface, an IC chip and an antenna are built in the card, and a mechanism for exchanging information with a reader / writer by radio waves.
[0027]
Recently, as an IC card having both functions of a contact type IC card and a non-contact type IC card, for example, a hybrid IC card equipped with two IC chips for a contact type and a non-contact type, or a contact type and a non-contact type. A combination IC card having a one-chip and two-interface equipped with a common type IC chip has been put into practical use.
[0028]
First, the contact type IC card has a metal connection terminal on the surface of the card, and when the IC card is inserted into the reader / writer, it comes into contact with the metal connection terminal in the reader / writer to stably supply power. Is done.
[0029]
As described above, the exchange of information between the reader / writer and the IC card is performed by electrical contacts. Therefore, it is a card with high security because it can perform many arithmetic processes. However, troubles may occur due to poor contact between the reader / writer and the card terminal.
[0030]
For example, if the external terminal is dirty or damaged due to wear, there is a risk that the electrical continuity is lost and reading cannot be performed. Also, in a dry environment, static electricity is likely to be charged on the surface of the card, which may cause a reading error.
[0031]
Next, the non-contact type IC card incorporates an antenna in the IC card and the reader / writer, and exchanges information using radio waves. The card is provided with an antenna made of copper wire, and can exchange information and receive power.
[0032]
Non-contact type IC cards include a contact type, a proximity type, a proximity type, and a remote type depending on the communication distance between the IC card and the reader / writer. For example, the communication distance is 2 mm for the contact type, about 10 cm for the proximity type, 1 m for the proximity type, and several meters for the remote type.
[0033]
Since the non-contact type IC card is a radio wave system, troubles associated with electrical contacts such as a contact type are eliminated. Also, the handling of the card is easy because the handling of the reader / writer is relatively easy, and it is only necessary to place it over the reader / writer without inserting the card.
[0034]
The mechanical structure of the reader / writer is simplified and the size is reduced. Furthermore, although maintenance becomes easy, it is necessary to consider communication troubles because radio waves are used.
[0035]
Next, hybrid IC cards with both contact and non-contact functions mounted on two IC chips, and combination IC cards with one chip and two interfaces with both contact and non-contact IC chips in practical use It has become.
[0036]
A conventional combination IC card having a 1-chip 2 interface in which an IC chip for both contact type and non-contact type is mounted on this single card is arranged at an arbitrary position on the card substrate 1 as shown in FIG. An IC module embedded in the antenna connection terminal 2a and antenna connection terminal 2b of the antenna 2 made of copper wire embedded in a loop shape in advance and in the recess 6 cut to a predetermined depth at an arbitrary position on the card substrate 1. 3 is connected.
[0037]
In other words, the combination IC card is a device that functions by connecting an IC module 3 that incorporates a contact-type and non-contact-type IC chip and an antenna 2 that performs non-contact communication. It is a point in manufacturing a durable IC card.
[0038]
As shown in FIGS. 4 (a) and 4 (b), the IC module 3 is provided with an IC chip portion 3b on the back surface of the printed wiring board portion 3a and a connection terminal 8 in the vicinity of the IC chip portion 3b. ing. The connection terminal 8 plays a role of connecting the antenna 2 and the IC chip portion 3b.
[0039]
Further, as shown in FIG. 3 (b), the IC module joining antenna tip routing copper at the copper wire exposed joint 4 that connects the IC module 3 to the antenna connection terminal 2a and the antenna connection terminal 2b of the antenna 2 is provided. The arrangement of the lines 5 is parallel to the cut tomographic plane 7 that is cut to embed the IC module 3 in the card substrate 1.
[0040]
As shown in FIG. 4 (a), the copper wire exposed joint 4 is formed in the antenna 2 that has been buried in the card substrate 1 in advance when the card module 1 is cut to bury the IC module 3. This is a portion where the leading end of the IC module joining antenna lead-out copper wire 5 is exposed.
[0041]
The IC chip portion 3b incorporated in the IC module 3 is bonded to the connection terminal 8 which is a conductive pad provided on the back surface of the IC module 3 through the exposed copper wire portion and a conductive adhesive or the like. And the antenna 2 embedded in the card substrate 1 in advance.
[0042]
In the copper wire exposed joint 4, the IC module joining antenna leading-out copper wire 5 is basically completely different from a resin such as PVC (vinyl chloride resin) or PETG (polyester resin) as the card substrate 1. Are arranged in an unbonded state.
[0043]
Therefore, the arrangement of the IC module joining antenna leading-end copper wires 5 includes a first-stage cutting tomographic plane 7a that forms a recess 6 in which the IC module 3 is embedded at an arbitrary position on the card substrate 1, and a copper wire exposed portion cutting tomography. When the surface of the IC module 3 is parallel to the surface 7b and the second-stage cut tomographic surface 7c, the IC module connecting antenna tip routing copper wire 5 is displaced and overlaps the cut interface portion. Due to the stress from the back surface of the card substrate 1 in the central portion, there was a defect that the second substrate cutting tomographic plane 7c was cracked and the card substrate 1 itself was cracked.
[0044]
In addition, the normal non-contact type IC card has a card thickness of 0.8 mm, and the cutting depth is 0.2 mm for the first step and 0.6 mm for the second step from the upper surface of the card. The fact that it is only 0.2 mm is also a cause of being easily broken.
[0045]
[Problems to be solved by the invention]
The present invention solves the problems of the related art, that is, in a combination IC card having both a contact type and a non-contact type function on one card, the copper wire of the portion where the IC module and the antenna are joined By devising routing, the present invention provides a combination IC card that is difficult to crack even when an external stress is applied to the card substrate and has a high folding strength.
[0046]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and the invention according to claim 1 of the present invention comprises a copper wire embedded in a loop shape in an arbitrary position of the card substrate 1 in advance. In a combination IC card in which an antenna 2 and an IC module 3 embedded in a recess 6 cut to a predetermined depth at an arbitrary position of the card substrate 1 are connected,
The cutting shape of the cutting recess 6 for embedding the IC module 3 in the card substrate 1 is substantially equal to the shape and outer dimensions of the IC module 3;
The cutting depth of the cutting recess 6 is 0.2 mm for the first stage and 0.6 mm for the second stage from the upper surface of the card,
A copper wire exposed joint 4 connecting the antenna 2 and the IC module 3 is provided with an IC module joint antenna leading end copper wire 5 between the first stage and the second stage, and the routed copper is provided. A combination IC characterized in that the arrangement of the lines 5 is provided so as not to be parallel to the cut surface 7 between each step of the cutting recess 6 cut to embed the IC module 3 in the card substrate 1. Card.
[0047]
The invention according to claim 2 of the present invention is the combination IC card according to claim 1, wherein the arrangement of the lead copper wires 5 is formed in a curved shape so as not to be parallel to the cutting fault plane 7. It is a combination IC card characterized by
[0048]
The invention according to claim 3 of the present invention is the combination IC card according to claim 1, wherein the arrangement of the lead copper wires 5 is formed in an S shape so as not to be parallel to the cutting fault plane 7. It is a combination IC card characterized by the above.
[0049]
The invention according to claim 4 of the present invention is the combination IC card according to claim 1, wherein the arrangement of the lead copper wires 5 is formed in a coil shape so as not to be parallel to the cutting fault plane 7. It is a combination IC card characterized by
[0050]
The invention according to claim 5 of the present invention is the combination IC card according to claim 1, wherein the arrangement of the lead copper wires 5 is formed in a saw blade shape so as not to be parallel to the cutting fault plane 7. It is a combination IC card characterized by the above.
[0051]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to FIGS. 1 (a), 1 (b), 2 (a), and 2 (b).
[0052]
In the present invention, an antenna 2 made of a copper wire previously embedded in a loop shape at an arbitrary position of the card substrate 1 and a recess 6 cut to a predetermined depth at an arbitrary position of the card substrate 1 are embedded. In the combination IC card to which the IC module 3 is connected, as shown in FIG. 1 (a), an IC module connecting antenna tip leading copper wire is connected to the copper wire exposed joint 4 that connects the antenna 2 and the IC module 3. 5 so that the arrangement of the drawn copper wires 5 is not parallel to the cut tomographic plane 7 cut to embed the IC module 3 in the card substrate 1.
[0053]
The card substrate 1 is made of a resin such as PVC (vinyl chloride resin) or PETG (polyester resin), and the card thickness is generally 0.8 mm.
[0054]
When using a non-contact function, the combination IC card uses a radio wave to exchange information between the IC card and the reader / writer. It is embedded in the shape.
[0055]
The antenna 2 can exchange information with the IC card reader / writer and receive power.
[0056]
The cutting recess 6 for embedding the IC module 3 in the card substrate 1 is substantially the same as the shape and outer dimensions of the IC module 3 composed of the printed wiring board portion 3a and the IC chip portion 3b.
[0057]
The cutting depth is 0.2 mm from the first stage and 0.6 mm from the second stage from the upper surface of the card, and the IC module joining antenna is 0.14 mm between the first stage and the second stage. The lead wire copper wire 5 is embedded.
[0058]
When embedding the IC module joining antenna tip routing copper wire 5, the arrangement of the IC module joining antenna tip routing copper wire 5 at the copper wire exposed joint 4 connecting the IC module 3 and the antenna 2 is devised, and the card Even if the IC module bonding antenna tip routing copper wire 5 at the copper wire exposed bonding portion 4 of the substrate 1 is displaced and overlaps with the cut interface portion, cracks due to external stress are not easily generated, and the bending strength It is possible to provide a combination IC card that is resistant to damage.
[0059]
That is, the first-stage cutting tomographic plane 7a and the copper wire exposed portion cutting layer plane of the cutting tomographic plane 7 for cutting the array of the IC module joining antenna leading-out copper wires 5 to embed the IC module 3 in the card substrate 1 7b and the second stage cutting tomographic plane 7c are provided so as not to be parallel to each other.
[0060]
The deformed shape may be a curved shape as shown in FIG. 1 (a), an S shape as shown in FIG. 1 (b), a coil shape as shown in FIG. 2 (a), or a figure. As shown in FIG.
[0061]
Thus, the first-stage cut tomographic plane 7a and the copper wire exposed portion of the cut tomographic plane 7 for cutting the array of the IC module connecting antenna leading-out copper wires 5 to embed the IC module 3 in the card substrate 1 are cut. The card substrate 1 is exposed to a resin such as PVC (vinyl chloride resin) or PETG (polyester resin) by being deformed into a curved shape or the like without being parallel to the cut layer surface 7b and the second-stage cutting tomographic surface 7c. Even if the IC module joining antenna leading-end routing copper wire 5 is not completely adhered, the center portion of the card substrate 1 in which the IC module 3 is built can be bent so as to be pushed from the back surface of the card substrate 1. In addition, it becomes difficult for cracks to enter the second-stage cut tomographic plane 7c, and a combination IC card that is extremely resistant to bending stress can be provided.
[0062]
【The invention's effect】
According to the present invention, in a combination IC card, it is possible to provide a combination IC card that is not easily cracked even when the card substrate is bent at the joint between the IC module connecting antenna leading end copper wire and the IC module and is extremely resistant to bending stress. it can.
[Brief description of the drawings]
FIG. 1 (a) is a schematic view showing one embodiment of a curved lead-around copper wire of the present invention. FIG. 1 (b) is an enlarged partial view of an S-shaped routed copper wire.
FIG. 2 (a) is an enlarged partial view of a coiled routing copper wire. FIG. 2 (b) is an enlarged partial view of a saw-tooth-shaped routing copper wire.
FIG. 3 (a) is a schematic plan view of a combination IC card in the prior art. FIG. 3B is an enlarged view of the IC module part in the prior art.
FIG. 4 (a) is an XX cross-sectional view of an enlarged view of an IC module portion in the prior art. FIG. 4B is an enlarged plan view of the IC module part in the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Card board 2 ... Antenna 2a ... Antenna connection terminal part 2b ... Antenna connection terminal part 3 ... IC module 3a ... Printed wiring board part 3b ... IC chip part 4. ··· Copper wire exposed joint portion 5 ··· IC module joining antenna tip routing copper wire 6 · · · concave portion 7 · Cutting fault surface 7a · First stage cutting fault surface 7b · Copper wire exposure Section cutting tomographic plane 7c ... Second stage cutting tomographic plane 8 ... Connection terminal

Claims (5)

A combination IC in which an antenna made of a copper wire embedded in a loop shape in advance at an arbitrary position on a card substrate and an IC module embedded in a recess cut to a predetermined depth at an arbitrary position on the card substrate In the card,
The cutting shape of the cutting recess for embedding the IC module in the card substrate is substantially equal to the shape and outer dimensions of the IC module,
The cutting depths of the cutting recesses are 0.2 mm for the first step and 0.6 mm for the second step from the upper surface of the card,
The exposed copper wire connecting portion connecting the antenna and the IC module is provided with an IC module connecting antenna tip routing copper wire between the first stage and the second stage, and the arrangement of the routing copper lines is A combination IC card, wherein the combination IC card is provided so as not to be parallel to a cutting tomographic plane between each step of the cutting recess cut to embed the IC module in the card substrate.   2. The combination IC card according to claim 1, wherein the arrangement of the drawn copper wires is formed in a curved shape so as not to be parallel to the cutting tomographic plane.   2. The combination IC card according to claim 1, wherein the lead copper wire array is formed in an S shape so as not to be parallel to the cutting tomographic plane.   The combination IC card according to claim 1, wherein the arrangement of the drawn copper wires is formed in a coil shape so as not to be parallel to the cutting tomographic plane.   2. The combination IC card according to claim 1, wherein the lead copper wire array is formed in a saw blade shape so as not to be parallel to the cutting tomographic plane.

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