JP2003030619A - IC chip package - Google Patents

Abstract

(57) [Problem] An IC that can be used as a conventional magnetic card
Provide a chip mounted body. SOLUTION: A magnetic recording layer 4 is formed on a card substrate 2 made of a PET material having a thickness of 250 μm, and a magnetic recording layer 4 is formed on the opposite surface.
A recording layer 6 for visual information is provided by a color heat-sensitive recording layer. Thereafter, the second antennas 12a and 12b are formed on the magnetic recording layer 4 by a thermal transfer method, and the previously formed I
The C chip mounting label 14 is attached to the second antennas 12a and 12b.
To join. The magnetic paint used for the magnetic recording layer 4 contains barium ferrite, and is coated by a reverse gravure method so as to have a thickness of 10 μm.
After being magnetically oriented by a permanent magnet in an Oe magnetic field, it was dried by a drier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC chip in which information recorded in an IC chip is recorded, rewritten, and read in a contactless manner via a recording, reading, and writing device called a reader / writer having an antenna built therein. It is about an implementation. Since the IC chip package targeted by the present invention has an antenna and performs electrostatic coupling with the antenna of the reader / writer to perform contactless communication, this antenna is referred to as an electrostatic antenna in this specification. ing. Further, the antenna can be formed by a general printing or printing method only by providing a conductive layer. Regarding the communication system of the IC chip mounting body by such an electrostatic coupling system,
For example, it is described in detail in Japanese Patent Publication No. 11-513518.

By communicating with a reader / writer through this electrostatic coupling, the IC chip package is used as a so-called IC card such as a transportation facility or a cash card, a so-called IC tag such as a tag or a tag, for physical distribution management. It is used in RFID (Radio Frequency Identification:
It is used as an IC carrier called "wireless automatic identification".

[0003]

2. Description of the Related Art In recent years, magnetic recording using magnetic recording such as telephone cards, prepaid cards used in transportation such as railroads and buses, highway cards used for highway toll payments, merchandise cards such as point cards, etc. Cards are very versatile. These magnetic cards are generally provided with a polyester base material having a thickness of 188 μm or 250 μm, and mainly provided with a magnetic recording layer containing a magnetic material such as barium ferrite on one surface of polyethylene terephthalate (PET). On the opposite side of the substrate, a unique design matching the card is provided by offset printing or the like. Furthermore, a concealing layer such as silver or white is provided on the upper side of the magnetic recording layer, the clause text, etc. is printed by offset printing, and a heat sensitive layer is provided on one side or both sides, and the amount of money used and the remaining amount etc. The thermal head can be used to record at any time. A rewritable heat-sensitive recording layer that can be repeatedly used may be provided on the surface of the card, or a face photograph or the like may be printed by a sublimation transfer method.

However, since the magnetic card itself can easily record, rewrite, and read on the magnetic recording layer by using the magnetic head, falsification and forgery of the remaining amount of the used money can be easily performed by using the magnetic head. be able to. As a countermeasure against this, two magnetic recording layers with different coercive forces are used.
Countermeasures against forgery and forgery such as provision of more than one layer to record information individually or special provision of a magnetic bar code having a unique magnetic signal in appearance on the card are taken. However, these magnetic forgery prevention is relatively easy to determine the magnetic pattern by obtaining a magnetic head suitable for it, and it is possible to forge by physically forming the same card. ,
It is a big social problem.

For these reasons, in recent years, an IC carrier that records, reads, and rewrites information in a memory of a non-contact IC card by using a reader / writer has been used as a railroad commuter pass such as JR, a bus ticket, and a subway ride. It is being used for tickets. Since this non-contact IC card converts and saves data by a very complicated encryption process, even if the data itself can be read, it is very difficult to grasp its contents, and it is a high security forgery. , Difficult to alter.

Further, since the memory capacity of the IC chip itself is 100 bytes or more, a large amount of information can be input and it can be used in a wide range of application environments. About this non-contact IC card,
For example, there is an ISO standard (for example, the physical characteristics of IC cards are standardized by ISO / IEC 14443-1), and the standardization of JIS is also in progress. At present, it is standardized.

However, the thickness of the non-contact IC card is usually 400 μm to 800 μm, and a polyester resin (PET or the like) is used as the base material. Non-contact IC
To construct a card, an antenna is formed on a base material, and an IC chip is bonded thereto by flip chip bonding or the like to form an inlet. The antenna is formed by etching a copper or aluminum foil or winding a conductive wire. The inlet is joined by a laminating method using a base material such as PET or ABS.
(Acrylonitrile-butadiene-styrene copolymer)
A resin base material such as is joined by injection molding to form a sheet, and then punched into a card. Therefore, since the number of steps is large and the thickness is large, the device can be used repeatedly, but there is a problem that the cost per sheet is high.

Furthermore, the thickness of the IC card itself is 400
μm-800μm and normal magnetic card (thickness is 200μ
However, if the IC card is provided with a magnetic recording layer such as a magnetic stripe, it is difficult to use it in a conventional magnetic card reader / writer.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an IC chip mounting body that can be used as a conventional magnetic card.

[0010]

According to the present invention, an IC antenna is mounted, and an electrostatic antenna electrically or electromagnetically coupled to a terminal of the IC chip (hereinafter referred to as "second antenna").
And an IC chip mounted by an electrostatic coupling method, wherein the IC chip is mounted on a surface of a support (hereinafter, referred to as a "card base material") on which the second antenna is formed by pasting. A magnetic recording layer is provided on the card substrate. The magnetic recording layer can be formed on the surface of the card substrate on which the second antenna is formed, or on the opposite surface.

In the present invention, the communication system is the electrostatic coupling system, and an IC card can be formed by attaching the IC chip to a card or the like. At that time, an electrostatic antenna is provided on the magnetic card and coupled with the IC chip. IC card can be manufactured by the extremely simple method of
Since it is thinner than the card, it can be used as a magnetic card. For example, it can be used as a magnetic recording prepaid card for ticket gates that are currently used for transportation, and further studies are currently underway.
It becomes possible to use it together with one card for the purpose of the ticket gate using the C card. A magnetic card equipped with this IC chip (which is referred to as a magnetically recordable IC chip package in the present invention) can record, read, and rewrite magnetic information with a magnetic reader / writer which is widely used at present. Therefore, the IC card can be used as an IC card having excellent security without impairing the function as a magnetic card such as a prepaid card or a point card.

[0012]

A preferred method for mounting an IC chip on a card base material is to mount the IC chip on a base material (hereinafter referred to as "label base material") different from the card base material, and to carry out the label base material. The first of the electrostatic antennas is smaller than the second antenna
In this method, an antenna is formed, the first antenna and the IC chip are electrically or electromagnetically coupled to each other to form an IC chip mounting label, and the IC chip mounting label is bonded to a card base material.

In the structure of the IC chip package of the present invention, the second antenna having a predetermined size is arranged on one surface of the card substrate by a printing method such as thermal transfer printing or a printing method such as screen printing. Attach the IC chip mounting label or the IC chip itself to the second antenna,
It is an IC chip package that can communicate in a non-contact manner. A magnetic recording layer is provided on the card base material in advance, and an IC chip mounting label or the IC chip itself is attached to the card base material on the upper surface or the opposite surface of the magnetic recording layer to form a magnetically recordable IC chip mounting body. . The second antenna may be composed of at least two layers of antennas, and the two layers of antennas may be electromagnetically coupled via a non-electric conductor.

The IC chip mounting label is a label substrate,
It is composed of a first electrostatic antenna and an adhesive material. I
In the method of manufacturing a C-chip mounting label, a conductive first antenna is formed on a label base material by a generally known printing method such as flexographic printing in a predetermined pattern described later. The first antenna and the communication terminal of the IC chip are joined using a conductive adhesive such as ACP (anisotropic conductive paste) or ACF (anisotropic conductive film). Further, an adhesive is coated so as to be bonded to the first antenna. It is preferable that this adhesive contains silver particles and the like to have conductivity.

The pattern of the first antenna is 0.5 mm to 2 mm so that two patterns having a size of about 5 mm to 20 mm square are connected to each of the two chip terminals so that the IC chip mounting label can be easily handled. After that, they are formed in parallel on the label substrate. Of course, the pattern shape is not limited to the rectangular shape, and any shape can be selected as long as communication is possible.

This IC chip mounting label is actually an IC
It will be easier to handle by sticking it on a plastic film or the like so that it can be used on the spot where the card is issued and making it into a reel. Furthermore, it is convenient to construct a device that automatically attaches to the second antenna on the card base material by using this reel because the time required for issuing the card can be shortened.

In the present invention, a card base material for forming a magnetic recording layer and further for forming a second antenna is used. The material of the card base material is polyester resin such as PET, PEN (polyethylene naphthalate), PET-G (modified polyester resin obtained by polymerizing at least three components of ethylene glycol, terephthalic acid and 1,4-cyclohexanedimethanol), Plastic films such as ABS resin and vinyl resin such as vinyl chloride, recycled paper, recycled paper, paper, synthetic paper, and non-woven fabric are used, and the thickness thereof is preferably about 50 μm to 1000 μm as a card substrate.

In the present invention, in the card base material forming the second antenna, a magnetic recording layer described below is provided on the surface on which the antenna is provided or on the opposite surface. In that case, the antenna is formed at the card issuing site. Therefore, the so-called thermal transfer method is recommended. The thermal transfer method has a thickness of 4.5 μm
A thermal transfer ribbon in which a conductive ink layer using a conductive ink material described later is provided on a substrate such as a polyester material having a thickness of 10 μm by a method such as gravure coating and a card substrate are overlapped, and a heating element called a thermal head is used for conductivity. In this method, the ink is heated and melted to transfer the conductive ink layer onto the card substrate. In order to completely transfer the conductive ink layer from the heat transfer ribbon, a release layer may be provided between the base material of the heat transfer ribbon and the conductive heat transfer layer. A blocking layer for improving the transferability of the conductive ink layer may be provided on the outer side (front surface side) of the conductive ink layer. Furthermore, a heat-resistant layer for preventing the phenomenon of so-called sticking, in which the card base material melts and softens when heated by the thermal head and sticks to the thermal head, may be provided on the side of the card base material surface that contacts the thermal head. .

When a conductive paper layer is transferred by the thermal transfer method to form the second antenna, and when a card substrate having a large unevenness such as plain paper is used as the card substrate, magnetic recording of the card substrate provided with the second antenna is performed. A thermal transfer receiving layer may be provided in advance as an intermediate layer on the layer surface or on the surface opposite to the magnetic recording layer. This is performed by converting a thermoplastic resin such as vinyl resin into an ink on the surface of the card base material and applying it by gravure coating to smooth the surface of the card base material. In order to promote absorption and bonding of the conductive ink, the thermal transfer receiving layer may be prepared so as to contain a porous pigment such as silica or calcium carbonate.

The pattern of the second antenna is the same as in the printing method, but it is necessary to make it fit within the card size and to secure a necessary communication distance. For example, the card size is 54 mm x 86
In the case of a size of mm, it is desirable that the second antenna is a rectangle of a size of 27 mm × 43 mm obtained by dividing the card size into two and is formed so as to be juxtaposed to each other. However, as long as communication is not hindered, the shape is not limited to such a rectangular shape and may be any shape. The thermal transfer printing method and the inkjet printing method described later are convenient because it is easy to specify and form the shape of the second antenna designed by a computer at the issuing site. In some cases, an ID number that can identify the IC or a unique barcode can be printed together with the second antenna, which is more convenient.

In the present invention, the second antenna can be formed by an ink jet method other than the thermal transfer method. The inkjet method is a method in which a liquid conductive ink is ejected in a droplet form from a nozzle and the direction of the ink droplet is controlled, or the ink nozzle is scanned in the print width direction to form a conductive ink on a card substrate. The drops are deposited and dried to form the conductive layer. An ink receiving layer may be provided to sufficiently secure the absorption and fixation of the ink. The ink receiving layer is composed of a porous pigment such as silica and a binder. In other words, in order to facilitate the permeation of the ink, a path through which the ink permeates is provided on the surface of the receiving layer.

In the present invention, as the material of the conductive ink,
Since carbon black or conductive metal particles are used, it is generally unnecessary to add a dye fixing material for fixing a coloring material. However, for example, PET as a card substrate
In order to impart water resistance when using, for example, an oil-soluble conductive ink using an oil-soluble binder is also used. Of course, if the IC card is used for a short period of time and water resistance is not required, a water-soluble conductive ink containing a water-soluble binder can be used.

In the present invention, in addition to the thermal transfer method and the ink jet method, a printing method can be adopted to provide a large number of second antennas having the same pattern on the base material. This printing method may be a known printing method, and examples thereof include relief printing such as flexographic printing, screen printing, offset printing, and gravure printing. When the second antenna is provided by the printing method, the card base material is processed into a card size in advance and then printed, and the card base material has a certain shape, for example, a size of several tens of cards. Examples include a method of printing in a sheet state and a method of printing in a roll state of a card base material. When printing in card form, use a card base material punched into a card shape in a sheet state or roll state.In the sheet state, cut the roll raw material to a desired size with a sheet cutter. In the printing in the roll state, the printing is generally performed by slitting the roll stock into a predetermined width with a slitter and then printing.

Regarding the material of the conductive ink forming the first antenna and the second antenna, carbon black (conductive carbon black such as Ketjen black is preferable), graphite, conductive metal such as gold, silver or aluminum. At least one conductive substance selected from powders, conductive compounds such as oxides of indium and tin,
Mainly from at least one binder selected from acrylic resins, polyester resins, waxes, petroleum resins, coumarone resins, epoxy resins, rubber resins such as styrene-butadiene resins, and water-soluble resins such as Poval. Composed. Other than this, it is also possible to appropriately add additives such as a dispersant and an antifoaming agent. The content of the conductive substance is 1 to 60% by weight, preferably 20 to 45% by weight in the solid content of the ink.

The conductive ink is prepared by mixing, dispersing, dissolving, or heating and melting the ink material in a solvent such as toluene or cyclohexanone, and kneading and dispersing with an attritor, sand mill, ball mill, roll mill or the like. . When using conductive powder,
The average particle size in the final ink state is 50 μm or less, preferably 20 μm or less, more preferably 10 μm or less. If the particle size of the conductive material is coarse, the transferability of the ink is poor, which is not preferable. The inkjet method causes nozzle clogging.

The conductivity of the conductive antenna layer is defined by its surface resistivity. The surface resistivity is generally assumed to be a rectangular parallelepiped, and the length of a pair of opposite sides for applying electrodes is set. Where W [mm] is the distance, L [mm] is the distance between the two sides, and R [Ω] is the measured resistance between the electrodes. Surface resistivity ρs = R × W ÷ L It is the place to be. In the present invention, the surface resistivity of the conductive layer for an antenna is preferably 1Ω / □ to 10000Ω / □ in order to obtain sufficient communication characteristics.

As described above, according to the present invention, printing methods such as thermal transfer printing and ink jet printing, or flexographic printing,
One of the features is that the second antenna can be easily and directly formed on the card base material by a printing method such as screen printing. Therefore, the cost as a non-contact IC card becomes very low, and it can be sufficiently used as a disposable card.

In the present invention, the magnetic recording layer is formed on the front surface or the back surface of the card substrate. This magnetic recording layer may be on the entire surface of the card base material or may be a stripe shape of only a part thereof. The magnetic recording layer has a coercive force of 100 Oe to 500 such as barium ferrite, γ-iron oxide, and cobalt-coated γ-iron oxide.
It is mainly composed of 0 Oe magnetic particles and a binder such as polyurethane resin or polyester resin.

The method for providing the magnetic recording layer on the card substrate can be generally performed by coating a magnetic paint containing a magnetic material. In the magnetic paint, a magnetic material and a binder are dissolved in a solvent such as toluene or methyl ethyl ketone, dispersed and mixed, and the magnetic material particles are pulverized and dispersed by using a disperser such as an attritor, a sand mill or a ball mill. Dispersants such as surfactants may be used to facilitate dispersion. It is desirable that the average particle diameter of the magnetic particles is 20 μm or less, preferably 10 μm or less when the final coating material is used. If the particle size is coarse, noise may occur during magnetic recording, which hinders complete recording, causing so-called spacing loss. However, when using a rod-shaped material such as γ-iron oxide as the magnetic material, if you grind and disperse it too finely, the shape may be broken and the magnetic orientation during coating may not be sufficient, so be careful with dispersion. It is necessary to pay.

The magnetic paint prepared in this manner was used as a reverse gravure coater, direct gravure coater,
Use a roll coater, bar coater, etc. to coat the card base material. What is important here is to apply a magnetic field orientation by a permanent magnet, an air core coil or the like immediately after applying the magnetic paint. As a result, the easy axis of magnetization of the magnetic particles in the magnetic paint before drying is aligned in a fixed direction (usually the scanning direction of the magnetic head during recording), and the magnetic output is significantly increased later when performing magnetic recording. Be improved. After magnetic orientation, it is dried with a dryer to form a magnetic recording layer. The thickness of this magnetic recording layer is preferably 1 μm to 20 μm. If the recording layer is thinner than this, the magnetic output is not sufficiently expressed. On the contrary, if the recording layer is thicker than this, the magnetic output that can be recorded by the magnetic head capable of applying a predetermined magnetic field is saturated, which is meaningless.

In the present invention, the magnetic recording layer is not limited to a single layer, and for example, two or more types of magnetic recording layers having different coercive forces can be provided. For example, in the case of providing two magnetic recording layers, barium ferrite of 3000 Oe is contained on the side closer to the base material, and barium ferrite of 1000 Oe is contained on the magnetic recording layer thereabove to form magnetic recording layers having different coercive forces. By changing the applied energy when recording with the magnetic head or applying the energy to the bias coil provided separately from the magnetic coil of the magnetic head, different contents are recorded on each magnetic recording layer. You may do that.

Further, in the present invention, in addition to the magnetic recording layer containing a magnetic material having a high coercive force, a magnetic layer containing a magnetic material having a low coercive force of 500 Oe or less may be provided outside the magnetic recording layer. Examples of the magnetic material having a low coercive force include Sendust, permalloy, metals such as amorphous iron, and Mn-Zn.
Examples include so-called soft magnetic materials such as iron oxides such as ferrite. By providing this low coercive force layer, the magnetic field generated when recording is performed on the magnetic recording layer itself is shielded, and for example, the magnetic pattern cannot be discriminated by a magnet viewer or the like, and security is enhanced. The thickness of the low coercive force layer is preferably 5 μm to 50 μm so that the magnetic shield can be sufficiently performed. This low coercive force layer is generally provided by coating after forming a magnetic paint in the same manner as the magnetic recording layer.

Further, in the present invention, a magnetic bar code may be provided for providing security to the magnetic recording layer. This magnetic bar code is composed of a magnetic bar code that can be magnetically discriminated by a magnetic head or the like and a dummy bar code that cannot be magnetically discriminated. The magnetic bar code contains a soft magnetic material such as carbonyl iron. The dummy bar code is toned so that it cannot be distinguished from the magnetic bar code in appearance. This magnetic bar code can detect a signal peculiar to the magnetic bar code by applying a bias magnetic field to a magnetic head having a bias coil, and a combination pattern with a dummy bar code which cannot be detected is desired. By arranging in such a manner, a peculiar code such as a denomination can be given to the magnetic recording layer. This magnetic bar code can be formed by providing a dummy bar code ink toned with a magnetic ink containing carbonyl iron, for example, by patterning by screen printing.

In the present invention, the magnetic recording layer includes a magnetic recording layer, a low coercive force layer (this is often referred to as a "magnetic hiding layer"), and a magnetic bar code layer. In the present invention, the magnetic recording layer may be provided in the form of stripes instead of being provided on the entire surface of the card substrate. This is called a magnetic stripe, and the magnetic stripe film for forming this magnetic stripe is composed of a base material such as PET, a peeling layer, a magnetic layer, an adhesive layer and the like. As the base material, PET having a thickness of 5 μm to 200 μm
Etc. can be used. The peeling layer is made of a material having a low melt viscosity, which contains wax or the like that easily melts when heated by a hot stamp or the like. The magnetic layer is formed by coating or the like in the same manner as the magnetic recording layer described above. The adhesive layer is for softening when heated by hot stamping or the like to be fused to the card substrate, and has a melting point of 10
A polyester adhesive having a temperature of 0 ° C to 150 ° C can be used. This magnetic stripe film is generally formed by coating each layer on a roll-shaped substrate,
For example, it is handled in a reel state by slitting it into 6.5 mm or the like. The method of forming a magnetic stripe on a base material is performed by arranging a magnetic stripe film at a predetermined position on a roll-shaped, sheet-shaped, or card-shaped card base material and using a laminating or a dedicated hot stamping machine. In the present invention, this magnetic stripe layer is referred to as a magnetic recording layer.

The present invention includes not only the case where the second antenna and the magnetic recording layer are provided separately but also the case where the magnetic recording layer is made conductive and the magnetic recording layer is used as the second electrostatic antenna. In many cases, a small amount of a conductive agent such as carbon black is added to the magnetic recording layer in order to prevent static electricity or static electricity. However, such a conductive agent is usually contained in the magnetic layer at a solid content of several%.
In most cases, the surface resistivity is 10 ⁷ Ω.
In most cases, it prevents the solvent from burning and exploding due to static electricity when coating the magnetic recording layer, or prevents dust from adhering to the magnetic recording layer.
Furthermore, they also prevent static electricity after they are commercialized.

However, in the present invention, as described in the section of the conductivity of the second antenna, even when the magnetic recording layer is used as the electrostatic antenna, its surface resistivity is
It is preferably in the range of 1 Ω / □ to 10000 Ω / □, and conventional materials used for antistatic or antistatic treatment by adding carbon black have too high a surface resistivity to sufficiently function as an electrostatic antenna. Therefore, in the present invention, the content of the conductive agent contained in the magnetic recording layer is 1 to 60% by weight, preferably 20 to 45% by weight in terms of solid content.
It is necessary to As the magnetic material of the magnetic recording layer that is also used as the electrostatic antenna, a magnetic material such as barium ferrite can be used, and in order to use it stably, the content of the magnetic material in the magnetic recording layer is The solid content ratio is 10 to 90% by weight, and it is necessary to make the composition including the above-mentioned conductive agent, in which magnetic recording and communication characteristics are well balanced.

When the magnetic recording layer is also used as an electrostatic antenna, it is necessary to maintain an appropriate shape as the electrostatic antenna. For example, when the IC card is used in a size of 54 mm × 86 mm, the IC chip mounting label is used for magnetic recording in the card transport direction in consideration of the portion used as the magnetic recording layer. Must be placed in a location that does not interfere with Generally, in the magnetic recording portion, when the card insertion direction is fixed, the track positions such as the first track, the second track, ... Are determined from the long side direction of the card. If the IC chip mounting label exists on the track on which the magnetic recording is performed, the recording cannot be performed on that portion, which is not practical. As described above, it is necessary to appropriately select the arrangement of the IC chip mounting label depending on the use conditions, but the shape of the second antenna is usually such that the first antenna of the IC chip mounting label can be electrostatically coupled. It is an indispensable condition to make a pattern. For example, it is divided into two in the card transport direction so as to avoid the magnetic recording track position, one second antenna is electrostatically coupled to one antenna of the first electrostatic antenna of the IC chip mounting label, and the other second antenna is attached. The antenna will be electrostatically coupled to the other antenna of the first electrostatic antenna. Needless to say, the shape of the second antenna can be arbitrarily set as long as magnetic recording is possible. Of course, it is also possible to form the magnetic recording layer used as the second antenna into a stripe shape and arrange a plurality of magnetic stripes on the card for use. If there is no problem in the track length of magnetic recording, it is also possible to divide the magnetic recording layer into diagonal directions including right angles, which are not parallel to the card transport direction.

In the present invention, when a visual information recording layer is provided on the magnetic recording layer, the magnetic recording layer usually has a dark color such as black or brown. Therefore, the concealing layer is used to change the color of the magnetic recording layer. May be provided. This hiding layer contains aluminum flakes (silver color) and titanium oxide (white color) so that the image displayed on the recording layer can be clearly identified. The hiding layer is usually provided by dispersing a coloring material such as aluminum flakes or titanium oxide in a binder, dissolving and dispersing with a solvent or the like, mixing and coating. Of course, it may be formed into ink and printed by screen printing or the like.

The present invention is characterized in that the magnetic recording layer and the second antenna are provided on the card base material. However, when a recording part is further provided on the card base material, the IC card is individually characterized in this recording part. Information such as name, face photo, logo, and card expiration date can be recorded. In the present invention, the recording method of this recording unit is one-color thermal recording,
It can be appropriately selected from two-color thermal recording, thermal transfer recording, sublimation transfer recording, rewrite thermal recording, and inkjet recording. When the second antenna is formed on the magnetic recording layer, this recording layer is provided on the surface of the card substrate opposite to the surface on which the magnetic recording layer is provided,
When it is provided on the magnetic recording layer, it is provided on the magnetic recording layer via a concealing layer or the like.

As the recording layer for forming these recording portions, for example, known layers disclosed in the following patent publications may be adopted. For the thermal recording layer,
Generally, there is a monochromatic coloring layer containing a leuco dye and a developer. The two-color heat-sensitive recording layer is described in, for example, JP-A-57-
It is described in detail in Japanese Patent No. 12695 and Japanese Patent Laid-Open No. 59-214691.

Regarding the sublimation fusion thermal transfer layer, Japanese Patent Application No. 3-
As described in No. 57927 (Japanese Utility Model Publication No. 5-31971) microfilm, a dye-adsorptive resin such as a cellulose resin or a polyvinyl acetal resin may be used when recording by sublimation transfer. desirable. In general, it is also possible to use a vinyl resin that is softened by heating during thermal transfer. The transfer layer may contain a porous pigment such as silica or calcium carbonate.

The rewrite color forming layer is described in detail, for example, in JP-A-11-154210. As a recording method, a colorless or light-colored leuco dye and a reversible thermosensitive layer that develops the color of the leuco dye by heating and decolorizes the leuco dye by reheating are provided.

The ink jet receiving layer is generally composed of a porous pigment having a large oil absorption such as amorphous silica, a cationic dye fixing material, and a binder such as Poval. In the present invention, not only may the image be recorded on the recording layer by the printing method described above, but the image, name, etc. may be recorded by a known printing method selected from offset printing, gravure printing, letterpress printing, and screen printing. Regarding these recording layers, the thickness of the recording layer is determined according to each recording method, but generally 0.5 μ
m to 30 μm is preferable.

It is also possible to provide an overcoat layer on the surface of the recording layer, such as a thermal recording layer, at any time. In this case, for example, a heat-resistant UV-curable varnish or the like is used. The method of forming the recording layer is not particularly limited, and a general gravure coat, roll coat, coating or printing method such as screen printing or gravure printing may be used. Of course, additives such as defoaming agents to prevent uneven bubbles during coating,
It goes without saying that auxiliary agents may be added at any time.

Now, it will be added here.
In particular, in the case of rewrite printing, it goes without saying that the recording and rewriting of the rewrite layer can be performed using a rewrite printer, but once the IC chip mounting label is attached to the second antenna, The part swells, and when it is rewritten as it is, it swells even if the mounting label part including the IC chip is on the back side,
Printing is uneven. Therefore, when it becomes necessary to rewrite the rewrite recording layer, it is preferable to rewrite the IC chip mounting label in a removed state. In the present invention, since an adhesive is used for the IC chip mounting label, it is possible to replace the label with bare hands without needing to use a dedicated replacement jig as well as to replace it. Please pay attention to.

In the present invention, it is desirable to bond the IC chip mounting label to the second antenna of the card substrate, but it is also possible to directly mount the IC chip on the second antenna. As to the mounting method, as described in the configuration of the IC chip mounting label, the communication terminal of the IC chip is directly joined by using ACP or ACF for the second antenna. At this time, a joining device such as a flip chip bonder may be used.

In the present invention, a protective body may be provided around the IC chip or the IC chip mounting label for the purpose of protecting the IC chip. This protector is an IC chip or IC
It has a function of adhering to a chip mounting label and relaxing external force and impact directly applied to the IC chip. As the protector, for example, a commonly used adhesive label, adhesive tape or the like is used, and its shape may be any size as long as it can sufficiently cover the IC chip or the IC chip mounting label, and the shape is arbitrary. You can

When the IC chip is bonded to the second antenna of the card base as an IC chip mounting label, the first antenna of the IC chip mounting label and the second antenna of the card base are electrically connected using a conductive adhesive. In addition to the method of joining the antennas, the antennas are electromagnetically coupled if the first antenna and the second antenna have a facing portion so as to overlap each other. can do. When the first antenna and the second antenna have opposing portions so as to overlap each other, a member such as a support may be interposed between the two antennas in addition to the adhesive layer.

The second antenna is not limited to a single layer structure, and may have two or more layers. When the second antenna has a structure of two or more layers, the antennas may be electrically connected to each other, or if the antennas have opposing portions so as to overlap each other, a non-electrically conductive material is used. It may be sandwiched and electromagnetically coupled. And by increasing the size of one of the two or more layers of the second antenna, the sensitivity is increased,
That is, the communication distance is extended, which is convenient.

[0050]

The present invention will be described in more detail with reference to the following examples, but of course the present invention is not limited thereto. (Example 1) First, an IC chip mounting label 14 as shown in FIG. 1 is formed. Next, in Example 1, as shown in FIG. 2, a magnetic recording layer 4 was formed on the card substrate 2, and then a two-color thermosensitive recording layer was provided as a recording layer 6 for visual information, and then the magnetic recording layer 4 was formed. The second antennas 12a and 12b are formed on the recording layer 4 by a thermal transfer method, and the IC chip mounting label 1 is formed in advance.
4 is joined to the second antennas 12a and 12b.

As the card base material 2, a PET material having a thickness of 250 μm was used. Since this PET material is biaxially stretched and expands and contracts by heating, a material that has been annealed in advance at 120 ° C. for 5 hours was used. The magnetic paint used for the magnetic recording layer 4 was the one having the following composition 1, and was coated by a reverse gravure method so as to have a thickness of 10 μm, magnetically oriented by a permanent magnet in a 5000 Oe magnetic field, and then dried by a drier.

[Formulation 1] Barium ferrite 100 parts by weight (Barium ferrite manufactured by Toda Kogyo Coercive force: 2750 Oe) Nonionic dispersant 1.5 parts by weight Polyurethane resin 40 parts by weight Isocyanate 5 parts by weight Toluene 100 parts by weight Methyl ethyl ketone 80 parts by weight Cyclohexanone After forming 20 parts by weight of the magnetic recording layer 4 on the card substrate 2, the two-color thermosensitive recording layer 6 was formed as follows.

Formation of Recording Layer 6 (Two Color Thermosensitive Layer): Recording Layer 6
Was formed in the original state of the card base material before forming the second antennas 12a and 12b. (1) Preparation of black-coloring leuco dye-containing composite fine particles: 8 parts by weight of 3-di (n-amyl) amino-6-methyl-7-anilinofluorane as a leuco dye and dicyclohexylmethane 4-, 4-diisocyanate 24 The mixture was added and dissolved in 1 part by weight, 100 parts of an 8% aqueous solution of polyvinyl alcohol was added, and the mixture was stirred with a homomixer for emulsion dispersion. 28 more water
Parts were added and cured at 80 ° C. to prepare a composite fine particle solution.

(2) Preparation of red color-forming leuco dye-containing composite fine particles: As a leuco dye, 3-diethylamino-7
40 parts by weight of chlorofluorane, 40 parts by weight of a 10% aqueous solution of polyvinyl alcohol modified with sulfone and 20 parts of water were dispersed by a sand mill. The particle size of each leuco dye dispersion was about 1 μm.

(3) Dispersion of developer: Np as a developer
-Toluenesulfonyl-N-3- (p-toluenesulfonyloxy) phenylurea 40 parts by weight, sulfone-modified polyvinyl alcohol 10% aqueous solution 40 parts by weight and water 2
A composition consisting of 0 parts was dispersed by a sand mill to a diameter of 1 μm.

(4) Preparation of sensitizer: 40 parts by weight of di-p-methylbenzyl oxalate was used as a sensitizer, and 40 parts of a 10% aqueous solution of sulfone-modified polyvinyl alcohol and 20 parts of water were sand-milled to a particle diameter of 1 μm. Dispersed up to.

(5) Preparation of coating material for thermosensitive coloring layer: 80 parts by weight and 15 parts by weight of the coating materials (1) to (4), respectively.
1 part by weight, 75 parts by weight, 30 parts by weight, and mixed, and 50 parts by weight of a 10% aqueous solution of polyvinyl alcohol added, and the resulting coating is dried using a roll coater as an equipment.
The coating was dried to a thickness of 0 μm.

(6) Overcoat layer: After coating the heat-sensitive recording layer 6, the raw fabric is cut into a sheet size of 370 mm × 470 mm and UV-cured by an offset printing machine.
The P varnish was printed and cured to a thickness of 1 μm. This sheet was punched with a puncher to a size of 54 mm × 86 mm to obtain a card.

The IC chip mounting label 14 was formed as follows. Formation of the IC chip mounting label 14: Two 1st antennas 22a and 22b (compound 2 below) having a size of 10 mm × 10 mm are provided in parallel on the paper base material 20 having a thickness of 100 μm at intervals of 5 mm by printing, and 1.5 mm The two terminals 26a and 26b of the IC chip 24 having a size of 2.0 mm were joined to both the first antennas 22a and 22b by ACP (anisotropic conductive paste) 28a and 28b. In addition, the first two
Conductive adhesives 30a and 30b containing fine silver particles were applied to the antennas 22a and 22b to form the IC chip mounting label 14. The surface resistance of the first antennas 22a and 22b was 900Ω / □. The IC chip mounting labels 14 were attached one by one to a PET tape having a width of 15 mm so as not to overlap with each other and stored.

[Formulation 2] Conductive carbon black 15 parts by weight (Lion Ketjen Black) Polyester resin (Toyobo Byron) 20 parts by weight Nonionic dispersant 2 parts by weight Cyclohexanone 20 parts by weight Isophorone 40 parts by weight Second antenna 12a , 12b were formed as follows.

Formation of Conductive Thermal Transfer Ribbon: 0.5 g / m ^{2 of} paint 1 (formulation 3 below) constituting an anchor layer by a gravure method on a polyester film having a thickness of 4.5 μm.
After coating and drying, the coating material 2 (compound 4 below) that constitutes the conductive ink layer is coated and dried at a basis weight of 1.6 g / m ² and slitted into a width of 110 mm. Created. The method for preparing the ink is described below.

Formation of the second antennas 12a and 12b: 45 mm × by a thermal transfer printer (Phoenix Co., Ltd.) on the magnetic recording layer 4 of the card substrate 2 on which the two-color thermosensitive recording layer was formed and punched into a card shape. 35 mm
The second pattern is printed by thermal transfer printing of a pair at intervals of 5 mm.
The antennas 12a and 12b are formed. Second antenna 12
The surface resistance of a and 12b was 3000 Ω / □.

[0063] [Formulation 3]: Ink layer ink formulation       2 parts by weight of nonionic dispersant       2 parts by weight of carbon graphite       Vinyl chloride vinyl acetate copolymer 2 parts by weight       2 parts by weight of coumarone resin       Polyethylene wax 4 parts by weight       Carnauba wax 5 parts by weight       Toluene 60 parts by weight       Methyl ethyl ketone 23 parts by weight

[0064] [Compound 4]: Ink for conductive layer       2 parts by weight of nonionic dispersant       Carbon graphite 4 parts by weight       Conductive carbon black (Ketjen black) 10 parts by weight       Kumaron resin 6 parts by weight       Vinyl resin 1 part by weight       Carnauba wax 1 part by weight       Methyl ethyl ketone 36 parts by weight       20 parts by weight of ethyl acetate       Toluene 10 parts by weight       Isopropanol 10 parts by weight

Preparation of anchor layer ink and conductive layer ink: A resin is added to a solvent and stirred to form a uniform resin liquid, and solid components such as nonionic dispersant, carbon graphite and wax are added and stirred to form a uniform dispersion. As a uniform mixed liquid ink dispersed by an attritor.

Color development of the two-color heat-sensitive recording layer: A card provided with the recording layer 6 is used as a heat-sensitive printing tester TH-PMD (manufactured by Okura Electric Co., Ltd.)
Was printed using. When the applied energy was 0.5 mJ, red coloring occurred, and when the applied energy was 2.0 mJ, black coloring could be performed, and the printing quality was very good.

Coupling of electrostatic antenna: The IC chip mounting label 14 was joined to the second antennas 12a and 12b formed by the thermal transfer printing to obtain the IC chip mounting body 1a. This joining was performed by joining one side 22a of the second electrostatic antenna 22a formed by thermal transfer printing to the other side 22a of the first electrostatic antenna and the other side 12b of the second antenna 12b to the other side 22b of the first electrostatic antenna. .

Characteristics of IC chip package 1a: When the IC chip package 1a formed as described above is communicated by a communication device (reader), the distance from the reader antenna to the second antennas 12a and 12b is 165 mm.
It was possible to communicate. By the way, although communication is possible even with the IC chip mounting label 14, the distance from the reader antenna to the first antennas 22a and 22b is up to 5 mm, and the communication distance in the IC chip mounting body 1a is remarkably increased. Was given.

Characteristics of magnetic recording layer 4: The IC chip mounting body 1a formed as described above was repeatedly read 1000 times by a magnetic reader / writer (CRS-700 manufactured by Sanwa Newtech Co., Ltd.) to read and write a predetermined code. The recording layer 4 was not damaged and the code was correct.

Example 2 The magnetic recording layer 4 was formed on the card substrate 2 in the same manner as in Example 1. Next, as shown in FIG. 3, a masking layer coating material having the following composition 5 was applied onto the magnetic recording layer 4 by gravure coating so as to have a thickness of 4 μm to form a masking layer 8.

[Formulation 5] Aluminum paste (Alumina paste manufactured by Asahi Kasei) 100 parts by weight Polyurethane resin 80 parts by weight Isocyanate 10 parts by weight Toluene 90 parts by weight Methyl ethyl ketone 90 parts by weight Further, an inkjet receiving layer was formed on the concealing layer 8. .

Formation of inkjet receiving layer (recording layer):
An ink receiving layer (recording layer) having the following composition 6 was formed by gravure coating so as to have a thickness of 20 μm. [Compound 6] Amorphous silica 100 parts by weight (Fineseal X-45 made by Tokuyama; Lubrication amount 260 ml / 100 g) Cation resin (Neofix made by Nichika Kagaku) 20 parts by weight Cationic resin (Neofix made by Senka) 20 parts by weight Cation Resin (Senka Unisense) 5 parts by weight Polyvinyl alcohol (Kuraray PVA117) 60 parts by weight Leveling agent (Aron Kasei) 10 parts by weight After forming the inkjet receiving layer, 370 mm x 470 m
Sheet cut to the size of m, 54 mm x 8 with a puncher
It was punched into a 6 mm card.

Printing on the ink jet recording layer 6: Concealing layer 8
A recording layer 6 for color printing was formed on the above with an inkjet plotter (NOVA JET PRO manufactured by ENCAD) via an inkjet receiving layer. (GO ink manufactured by ENCAD) Color printing (yellow, magenta, cyan) was good. After this, the card substrate 2
The second antenna 12a, 12b is formed on the surface opposite to the magnetic recording layer 4 by thermal transfer printing in the same manner as in Example 1, and the IC chip mounting label is formed on the second antenna 12a, 12b as in Example 1. 14 were joined to form the IC chip mounting body 1b.

Characteristics of IC chip package 1b: When communication is performed by a communication device (reader) using the IC chip package 1b formed as described above, the distance from the reader antenna to the second antennas 12a and 12b Is 1
Communication was possible up to 50 mm.

Characteristics of magnetic recording layer 4: The IC chip mounting body 1b formed as described above was repeatedly read and written 1000 times by a magnetic reader / writer (CRS-700 manufactured by Sanwa Newtech Co., Ltd.). The recording layer 4 was not damaged and the code was correct.

(Example 3) As shown in FIG. 4, layers 32a and 32b which also serve as a second antenna and a magnetic recording layer of the following formulation 7 are formed on the same card substrate 2 as in Example 1, and vice versa. The recording layer 6 was formed on the surface in the same manner as in Example 1, and the IC chip mounting label 14 was attached in the same manner as in Example 1 to form the IC chip mounting body 1c.

[0077] [Compound 7]       Barium ferrite 80 parts by weight         (Toda Kogyo barium ferrite coercive force 2750 Oe)       Nonionic dispersant 1.5 parts by weight       Conductive carbon black 35 parts by weight         (Lion made Ketjen Black)       Polyurethane resin 45 parts by weight       Isocyanate 5 parts by weight       100 parts by weight of toluene       Methyl ethyl ketone 80 parts by weight       Cyclohexanone 20 parts by weight

The average particle size of barium ferrite and conductive carbon black was 3 μm using a sand mill with the coating composition 7.
It was wet-dispersed until it became m or less and made into a paint. This was part-coated on the card base material 2 by gravure coating. This part coat is finally 54mm x 86m
A non-coated portion having a central portion of 4 mm is provided in the card transport direction (long side direction) when magnetically recording to m as a card, and the other portion serves as a layer serving as the second antenna and the magnetic recording layer. So went. The surface resistivity of the layers 32a and 32b which also serve as the second antenna and the magnetic recording layer was 1500Ω / □. Regarding the communication characteristics of the IC chip mounting body 1c thus created, communication was possible up to a communication distance of 115 mm, and the color developing characteristics of the recording layer 6 were the same as in Example 1.

[0079]

According to the present invention, the IC chip is mounted on the surface of the card substrate on which the second antenna is formed by sticking, and the magnetic recording layer is provided on the card substrate.
It can be used as a magnetic card because it can be made thinner than the conventional IC card.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an IC chip mounting label according to an embodiment.

FIG. 2 is a cross-sectional view showing an IC chip package of the first embodiment.

FIG. 3 is a cross-sectional view showing an IC chip mounting body of a second embodiment.

FIG. 4 is a sectional view showing an IC chip mounting body of a third embodiment.

[Explanation of symbols]

2 card base material 4 magnetic recording layer 6 recording layer 8 concealment layer 12a, 12b second antenna 14 IC chip mounting label 20 paper base material 22a, 22b first antenna 24 IC chip 26a, 26b terminals 28a, 28b ACP (anisotropic conductivity) Paste) 30a, 30b Conductive adhesives 32a, 32b Layer serving as second antenna and magnetic recording layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 5/735 G06K 19/00 B 5/80 H (72) Inventor Toshiyuki Shimonishi Tatsumi Town, Anan City, Tokushima Prefecture Address No. 1 Oji Paper Co., Ltd. F-Term in Card Media Business Office (Reference) 2C005 HA11 HB04 HB14 JA02 JA03 KA08 KA15 KA45 MA15 MA18 NA10 PA23 5B035 AA06 BA05 BB02 CA23 5D006 CC03 DA01

Claims (13)

[Claims] 1. An IC chip mounting body by an electrostatic coupling method, comprising an IC chip mounted, and an antenna electrically or electromagnetically coupled to a terminal of this IC chip, wherein said IC chip is formed with said antenna. An IC chip package, which is mounted on the surface of a supporting body by pasting, and a magnetic recording layer is also provided on the supporting body. 2. The IC chip package according to claim 1, wherein the magnetic recording layer is formed on a surface of the support on which the antenna is formed. 3. The IC chip mounting body according to claim 1, wherein the magnetic recording layer is formed on a surface of the support opposite to a surface on which the antenna is formed. 4. The IC chip package according to claim 1, wherein the magnetic recording layer contains a conductive material and is divided into at least two regions and patterned to form the antenna. 5. The IC chip is mounted on a base material different from the support for the antenna, a first antenna smaller than the antenna is formed on the base material, and the first antenna and the IC chip are IC by electrically or electromagnetically coupling
The IC chip mounting body according to any one of claims 1 to 4, wherein a chip mounting label is formed, and the IC chip mounting label is bonded to the antenna support. 6. The IC chip mounting according to claim 1, wherein a visual recording layer is provided on the surface of the support opposite to the surface on which the magnetic recording layer is formed. body. 7. The IC chip package according to claim 1, wherein a concealing layer is provided on the magnetic recording layer, and a visual recording layer is further provided thereon. 8. The antenna according to claim 1, wherein the antenna is composed of at least two layers of antennas, and the two layers of antennas are electromagnetically coupled via a non-electric conductor. IC chip package. 9. The I according to claim 1, further comprising a protective body that substantially surrounds the IC chip.
C chip mounting body. 10. The IC chip package according to claim 1, further comprising a print layer provided between the magnetic recording layer and the support. 11. The IC chip mounting body according to claim 1, wherein the antenna formed on the support is a thermal transfer layer, and an intermediate layer is provided under the antenna. 12. The IC chip mounting body according to claim 1, wherein the magnetic recording layer is formed in a stripe shape, and a printing layer is provided below the magnetic recording layer. 13. The IC chip package according to claim 1, wherein an overcoat layer is provided on at least one of the front surface and the back surface of the IC chip package.