JP4184776B2 - IC card - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-contact IC card, and more particularly to an invention aimed at enhancing the reliability of connection between an IC module and an antenna coil in a card base in a contact and non-contact IC card (2-way card).
Therefore, the application field of the present invention relates to the manufacture and application field of non-contact IC cards.
[0002]
[Prior art]
The non-contact IC card includes an antenna sheet in which a coil is formed inside the card in order to obtain electric power and signals from the outside in a non-contact manner based on the principle of electromagnetic induction.
An IC chip that processes and stores a signal to be transmitted / received is connected to a coil antenna and used integrally with an antenna sheet, or an IC module with a substrate is mounted on a card surface. In some cases, an antenna sheet is connected.
In the case of an IC card for both contact and non-contact, the contact terminal board must be on the card surface, so the latter form is inevitably required.
[0003]
A conventional manufacturing method for a contact / non-contact IC card (2 Way card) as described above generally includes the following steps.
(1) First, a card substrate is prepared by embedding an antenna sheet on which an antenna is formed, and predetermined printing is performed thereon.
(2) The printed card base is counterbored to form an IC module embedded recess and to expose both connection ends of the antenna coil embedded in the card base.
Usually, the embedded concave portion is a two-stage of an adhesion area mounting portion (hereinafter also referred to as “first embedded concave portion”) of the IC module substrate and a storage portion of the mold portion (hereinafter also referred to as “second embedded concave portion”). It has a structure. In some cases, the bonding area mounting portion of the substrate may be further deepened to expose the antenna coil connection end.
[0004]
(3) A COT (tape IC module) provided with an antenna connection terminal is punched into individual pieces so as to come into contact with the exposed portion of the antenna coil connection end of the card, and the COT back surface or the first card side card The adhesive (liquid or sheet-like, heat-reactive type or room-temperature curing type) for bonding and fixing the IC module card to the embedded recess, and the card-side antenna coil connection end and the COT-side antenna connection terminal are electrically connected Apply or laminate an adhesive (conductive liquid or sheet-like adhesive) that is electrically conductive and adhesively fixed.
[0005]
(4) The COT punched into individual pieces is mounted on a counterbored card, and the COT is heated and pressurized to predetermined conditions (temperature, pressure, and time are set to optimum conditions suitable for the adhesive), and the COT is card base. Adhesive mounting. Thereby, the purpose of both physical fixation of the COT to the card and electrical connection between the IC chip and the antenna coil via the antenna connection terminal can be achieved.
[0006]
The connection of the antenna connection terminal for connection between the antenna coil connection end exposed by counterboring and the IC chip is performed on the two left and right sides of the outer periphery of the COT where the load of bending stress is most difficult when the card is bent (card Although it is most often arranged in a direction parallel to the short side), in rare cases, it may be arranged on two upper and lower sides (direction parallel to the long side of the card) of the outer periphery of the COT.
In any case, from the viewpoint of ensuring the physical adhesive strength between the COT and the card as much as possible and preventing the separation (connection failure) of the connection portion due to excessive external force to the antenna connection terminal. In most cases, the layout is determined as described above.
[0007]
Here, a conventional example of a contact / non-contact IC card will be described with reference to the drawings.
FIG. 7 is a plan view showing an example of a contact / non-contact IC card, FIG. 8 is a view showing an IC module embedded recess, and FIG. 9 is an enlarged cross-sectional view when the IC module is mounted.
In the present specification, the vertical scale of each cross-sectional view is shown larger than the horizontal scale for easy understanding.
[0008]
FIG. 7 is a plan view of a contact / non-contact IC card, and shows a state where the terminal board of the IC module is peeled off. As described above, when the connection to the antenna coil 24 in the card is made on the left and right sides of the IC module 10 (FIG. 7A), and on the upper and lower sides (FIG. 7B). There is.
In each case, the IC module 10 having the back surface of the IC module 10 configured as shown in FIGS. 7A and 7B is turned upside down in the case of FIG. 7 and mounted in the embedded recess 22 of the IC card. Therefore, the antenna connection terminal 121 is connected to the antenna coil connection end 241, and the antenna connection terminal 125 is connected to the antenna coil connection end 242.
In FIG. 7, the antenna connection terminals 121 and 125 are connected to one non-contact communication function part pad (hereinafter also referred to as “antenna end part”) of the IC chip, thereby connecting the chip. It means a terminal of the IC module for electrical connection between the specific pad and the antenna coil 24.
[0009]
The card surface side of the IC module 10 is a contact terminal board, which is not shown in the figure, and has a terminal board arrangement defined by ISO.
A connection end portion with the antenna coil 24 provided in the IC card base 21 is formed on the lower surface of the IC module 10 so as to be electrically connected to the antenna connection terminal of the IC module 10.
The antenna coil connection ends 241 and 242 are formed by folding the ends of the winding when the antenna coil is a winding, but when the antenna coil is formed by etching a copper foil or the like, a 3-4 mm square is formed. It is made into a flat plate shape of about the size.
[0010]
As shown in FIG. 8, the IC module embedding recess 22 is a first embedding recess 221 having a size and a depth enough to fit the terminal board of the IC module, and a central portion of the recess so as to fit the mold portion of the IC module. The second embedded recess 222. When the antenna connection terminals of the IC module are placed on the left and right sides, the antenna coil connection ends 241 and 242 are positioned on the lower surface of the first embedded recess 221 and on the left and right sides of the second embedded recess 222. Is done.
[0011]
When connecting the antenna coil connection ends 241 and 242 to the antenna connection terminal of the IC module 10, the cutting surface of the first embedded recess is the case except that the antenna coil connection end is exposed on the first embedded recess surface. Then, the recess for conduction is further excavated so that the metal surface of the flat plate is exposed.
After the metal surface is exposed by excavation, the conductive recess is filled with a conductive adhesive (paste) such as thermosetting, or a conductive adhesive tape is attached to the back of the COT, and then the IC module is covered. And fix. The excavation of the concave portion for conduction can ensure conduction even when penetrating through the flat metal layer, but in order to increase the contact area, it is preferable to make the depth just enough to expose the metal surface.
[0012]
FIG. 9 shows an enlarged cross-section after mounting the IC module.
When mounting the contact / non-contact IC module 10 in the embedded recess 22, as described above, the hot melt adhesive sheet (non-conductive) 3 and the conductive layer are electrically connected to the portion suspended from the first embedded recess 221 of the IC module. The adhesive module sheet is attached in portions, or the conductive recesses 151 and 152 are filled with a conductive adhesive (paste) such as thermosetting, and then the IC module 10 is placed on the embedded recess 22. Place and heat-press under conditions suitable for the adhesive. As a result, the IC module 10 is fixed in the embedded recess 22 and conduction between the non-contact communication function unit pad of the IC module and the antenna coil 24 is ensured by the conductive adhesive.
[0013]
There are various layer configurations of the IC card base 21, and the layer configuration is not limited to this, but the illustrated one is an example of two layers of milky white core sheets 211 and 212, and transparent oversheets 213 and 214 on the front and back sides. A cover and a hot-pressed structure are shown as a unitary structure.
The antenna coil 24 is formed by etching a metal foil laminated on a core sheet, printed wiring, or by winding a winding several times in a plane.
[0014]
[Problems to be solved by the invention]
As described above, in order to ensure electrical connection between the antenna connection terminal on the back side of the COT and the antenna coil connection terminal on the card side, the antenna connection terminals are usually provided only on the left and right sides of the outer periphery of the COT or rarely only the upper and lower sides. However, this has the following drawbacks.
(1) When the antenna connection terminals are provided only on the left and right sides of the outer periphery of the COT, the connection reliability of the antenna connection terminals is always along the upper and lower sides because it is arranged in the direction where the bending stress of the card is hardly applied. However, if excessive bending stress (extremely bent) occurs in the left-right direction, the COT itself may not be peeled off, but there may still be a conduction failure. .
[0015]
(2) Even when the antenna connection terminals are provided only on the upper and lower sides of the outer periphery of the COT, when the bending stress of the card is applied in the short side direction of the card, the COT itself is not peeled off. There was a possibility.
In order to prevent this, special adhesives have been developed year by year to make the conductive adhesive for antenna connection more excellent, but the development costs are soaring that manufacturing costs cannot be recovered and the development period is prolonged. There was a problem such as.
[0016]
Therefore, the present inventor has conceived that by providing antenna connection terminals on the left and right sides and the upper and lower sides of the outer periphery of the COT, respectively, the connection reliability can be significantly improved. As a result of earnest research, the present invention has been completed. It has come.
[0017]
[Means for Solving the Problems]
The first of the gist of the present invention to solve the above problems is that an IC module having a contact terminal plate and having both a contact and non-contact function is mounted in the embedded recess, and the non-contact communication function part of the IC module is a card base. In an IC card connected to the antenna coil in the body, two antenna connections where one non-contact communication function part pad of the IC chip is branched into a long side and a short side of the rectangular IC module substrate. Connect to the terminalAndHas four antenna connection terminals for convenience,TwoAntenna coil connection endBranched into two at the outer peripheral area of the IC module embedding concave part, and has four coil connection ends for convenience,BranchRuaTo the antenna connection terminalIn the first embedded recess area of the IC module embedded recess,RespectivelyBy conductive paste in the recess for conductionThe IC card is characterized in that it is made conductive to form four conductive portions.
[0018]
The second of the gist of the present invention is that an IC module having a contact terminal plate and having both contact and non-contact functions is mounted in the embedded recess, and the non-contact communication function part of the IC module is attached to the antenna coil in the card base. In the IC card to be connected, one non-contact communication function part pad of the IC chip is connected to four antenna connection terminals that are branched into two on the long side and the short side of the rectangular IC module substrate.AndIt has 8 antenna connection terminals for convenience.TwoAntenna coil connection endEach of the IC module embedded recesses is divided into four parts at the outer peripheral area, and has eight coil connection ends for convenience.To the antenna connection terminal that branchesIn the first embedded recess area of the IC module embedded recess,RespectivelyBy conductive paste in the recess for conductionThe IC card is characterized in that it is made conductive to form eight conductive portions.
[0019]
The third aspect of the present invention is that an IC module having a contact terminal plate and having both contact and non-contact functions is mounted in the embedded recess, and the non-contact communication function part of the IC module is attached to the antenna coil in the card base. In the IC card to be connected, one non-contact communication function part pad of the IC chip is connected to each of the four antenna connection terminals that are branched one by one on the four sides of the rectangular IC module substrate.AndIt has 8 antenna connection terminals for convenience.TwoAntenna coil connection endEach of the IC module embedded recesses is divided into four parts at the outer peripheral area, and has eight coil connection ends for convenience.BranchRuaTo the antenna connection terminalIn the first embedded recess area of the IC module embedded recess,RespectivelyBy conductive paste in the recess for conductionThe IC card is characterized in that it is made conductive to form eight conductive portions.
[0020]
In the IC card, the antenna coil may be formed by etching.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
The IC card of the present invention is connected between a plurality of connection terminals with respect to the antenna in order to ensure the reliability of connection between the IC module and the antenna coil in the card base against external force applied to the card, particularly bending stress. It is something to try.
For this purpose, an IC module having two or more antenna connection terminals is required for one non-contact communication function part pad of the IC chip. Further, the antenna coil in the card base also needs to have a plurality of antenna coil connection ends with respect to one coil end.
[0027]
Hereinafter, embodiments of the present invention will be sequentially described with reference to the drawings.
FIG. 1 shows a first embodiment of an IC card according to the present invention, and shows a case where one antenna end is branched into two antenna connection terminals. FIG. 2 shows a second embodiment of the IC card according to the present invention, and shows a case where one antenna end is branched into four antenna connection terminals. FIG. 3 shows a third embodiment of the IC card according to the present invention, and shows a case where the antenna connection terminal is divided into four pieces for one antenna end portion and distributed on four sides.
[0028]
FIG. 1 is a plan view of the IC card according to the first embodiment, in which one antenna connection terminal is branched into two. FIG. 1 (A) is a state of an embedded recess where an IC module terminal plate of an IC card is peeled off, FIG. 1 (B) is an enlarged view of the embedded recess portion of FIG. 1 (A), and FIG. It is a rear view of an IC module.
As shown in FIGS. 1A and 1B, the antenna coil connection end in the IC card base 21 is provided around the second embedded recess 222 of the embedded recess 22 including the first embedded recess 221 and the second embedded recess 222. One part 241a, 241b, 242a, 242b is arranged on each side.
[0029]
As shown in FIG. 1C, the IC module 10 used in Embodiment 1 has four antenna connection terminals 121, 122, 125, and 126 around the mold part 11, and each antenna connection. The terminal is reversed to the left and right from the state of FIG.
Therefore, the antenna connection terminal 121 of the IC module 10 is connected to the antenna coil connection end 241a, the connection terminal 122 is connected to the connection end 241b, the connection terminal 125 is connected to the connection end 242a, and the connection terminal 126 is connected to the connection end 242b. Will be connected.
[0030]
As described above, in the IC card according to the first embodiment, the connection to the antenna end of the IC chip 2 is arranged on the long side with respect to one antenna coil connection end, and the antenna connection terminal 121 is arranged on the short side. Since it is done by both of the antenna connection terminals 122 that are connected, even if the adhesion to one of the antenna connection terminals is peeled off by an external force, the non-contact communication function is impaired as long as the other connection is secured. Absent.
[0031]
The branch P for connecting the antenna coil connection end portion 241 to the antenna connection terminals 121 and 122 is the inner peripheral region of the first embedded concave portion 221 and the lower surface side thereof, but the outer peripheral region of the first embedded concave portion. However, considering that the disconnection of the antenna is likely to occur in the vicinity of the edge of the IC module substrate, it is more preferable to be in the outer peripheral region.
That is, as shown in FIG. 1 (B), when the branch P is in the outer peripheral area of the first embedded recess, for example, even if it is disconnected at the “x” in the figure, the other connection is secured, The function of the non-contact communication function is not lost. This means that it is possible to cope with the problem of antenna coil cutting that sometimes occurs during excavation of the buried recess. The same applies to the branch Q.
[0032]
FIG. 2 is a plan view of the IC card according to the second embodiment, in which one antenna connection terminal is branched into four. 2A is a state of the embedded concave portion where the terminal board of the IC module of the IC card is peeled off, FIG. 2B is an enlarged view of the embedded concave portion of FIG. 2A, and FIG. It is a rear view of an IC module.
As shown in FIGS. 2A and 2B, antenna coil connection ends 241 a, 241 b, 241 c, 241 d, 242 a, 242 b, 242 c, and 242 d in the IC card base 21 are arranged around the embedded recess 22. Yes.
[0033]
The IC module 10 used in Embodiment 2 has eight antenna connection terminals 121, 122, 123, 124, 125, 126, 127, and 128 around the mold part 11, as shown in FIG. Then, each antenna connection terminal is reversed left and right from the state of FIG. 2C and is mounted in the embedded recess 22 of the IC card. Therefore, the antenna connection terminals 121, 122, 123, and 124 of the IC module 10 are connected to the antenna coil connection ends 241a, 241b, 241c, and 241d, respectively, and the antenna connection terminals 125, 126, 127, and 128 are connected to the antenna coil connection ends. The parts 242a, 242b, 242c, and 242d are respectively connected.
It is preferable that the branch points P, Q and the like are in the outer peripheral area of the first embedded recess 221 as in the case of the first embodiment.
[0034]
As described above, in the IC card of the second embodiment, the antenna connection terminals 121 and 123 in which the connection to the antenna end of the IC chip 2 is arranged on the long side with respect to one antenna coil connection end, the short side Since the antenna connection terminals 122 and 124 are arranged at the four terminals, even if the adhesion to any one to three antenna connection terminals is peeled off by an external force, the remaining one connection As long as this is secured, the contactless communication function will not be harmed. The connection reliability will be much higher than in the first embodiment.
[0035]
The third embodiment of the IC card is the same as the second embodiment, but is a case where one antenna connection terminal is divided into four and branched to each side.
FIG. 3 is a plan view of Embodiment 3 of the IC card. Although it looks the same as in the case of the second embodiment, there is a feature that one antenna connection terminal is divided into four parts and distributed on each side. FIG. 3 (A) is a state of an embedded concave portion where the terminal board of the IC module of the IC card is peeled off, FIG. 3 (B) is an enlarged view of the embedded concave portion of FIG. 3 (A), and FIG. It is a rear view of an IC module.
As shown in FIGS. 3A and 3B, antenna coil connection ends 241 a, 241 b, 241 c, 241 d, 242 a, 242 b, 242 c, and 242 d in the IC card base 21 are arranged around the embedded recess 22. Yes.
[0036]
The IC module 10 used in Embodiment 3 has eight antenna connection terminals 121, 122, 123, 124, 125, 126, 127, and 128 around the mold part 11 as shown in FIG. Then, each antenna connection terminal is reversed left and right from the state of FIG. Therefore, the antenna connection terminals 121, 122, 123, and 124 of the IC module 10 are connected to the antenna coil connection ends 241a, 241b, 241c, and 241d, respectively, and the antenna connection terminals 125, 126, 127, and 128 are connected to the antenna coil connection ends. The parts 242a, 242b, 242c, and 242d are respectively connected.
[0037]
It is preferable that the branch points P, Q and the like are in the outer peripheral area of the first embedded recess 221 as in the case of the first embodiment. In addition, C1, C, C3 portions indicated by “□” in the figure are portions where wiring to the antenna coil connection end portion intersects, and it is necessary to prevent short circuit.
[0038]
In the case of such an arrangement, when the IC card receives an external force from a certain direction, the antenna connection terminal group for one antenna end is concentrated on one side of the IC module. As a result, the effect that the entire antenna end portion is hardly peeled off is obtained, and the reliability and reliability of connection are further increased.
[0039]
As described above, the embodiment of the IC card of the present invention is not limited to the case of 4 terminals or 8 terminals, but one antenna end portion has two antenna connection terminals, and the other one antenna. It can be easily assumed that the present invention can also be applied when the end portion has a single antenna connection terminal. Similarly, two, three, or three or four may be easily conceived by those skilled in the art and can be easily inferred that similar effects can be exhibited.
[0040]
Such an IC card substrate can be manufactured by the method described in the section of the prior art. In the case of photoetching or printed wiring, an antenna coil having a plurality of connection ends can be easily manufactured by specifying a photomask pattern shape or making a printing plate pattern as such.
Further, in the case of the third embodiment having intersecting wirings, it is considered that wiring by a plurality of processes is necessary, but such a process is not necessary in the case of using the covered wire.
In the manufacture of an IC card, it is necessary to correctly align and connect the antenna connection terminals of each IC module to each antenna coil connection end.
[0041]
Next, the present inventionUsed forThe IC module will be described. The present inventionUsed forSince the IC module needs to have an antenna connection terminal corresponding to each embodiment of the IC card of the present invention, three embodiments will be described with reference to the drawings.
FIG. 4 shows the present invention.Used forEmbodiment 1 of the IC module, FIG. 5 shows Embodiment 2 of the IC module, and FIG. 6 shows Embodiment 3 of the IC module. It is a rear view of each IC module.
[0042]
In the first embodiment of the IC module, the IC module 10 has four antenna connection terminals 121, 122, 125, 126 as shown in FIG. 4, and the terminals 121 and 122 are connected to the circuit 5 and the bonding wire 6. Is connected to the non-contact communication function part pad A1 of the IC chip 2.
Similarly, the antenna connection terminals 125 and 126 are connected to the non-contact communication function unit pad A2 of the IC chip 2.
[0043]
In the second embodiment of the IC module, the IC module 10 has eight antenna connection terminals 121, 122, 123, 124, 125, 126, 127, 128 as shown in FIG. , 124 are connected to the non-contact communication function part pad A1 of the IC chip 2 via the circuit 5 and the bonding wire 6.
Similarly, the antenna connection terminals 125, 126, 127, and 128 are connected to the non-contact communication function unit pad A 2 of the IC chip 2.
[0044]
In the third embodiment of the IC module, the IC module 10 has eight antenna connection terminals 121, 122, 123, 124, 125, 126, 127, and 128 as shown in FIG. , 124 are connected to the non-contact communication function part pad A1 of the IC chip 2 via the circuit 5 and the bonding wire 6.
Similarly, the antenna connection terminals 125, 126, 127, and 128 are connected to the non-contact communication function unit pad A 2 of the IC chip 2.
In the IC module of this form, the antenna connection terminals of the pads A1 and A2 are arranged on each side and are alternately arranged, so that the circuit structure is a laminated structure, but the multilayer wiring technology has been established in this field. Technology.
[0045]
The IC module 10 is completed by mounting the contact / non-contact IC chip 2 on the substrate or COT on which the circuit and terminal arrangement as described above are formed, and then performing wire connection, and sealing the mold part 11 with resin. .
Of course, IC modules other than those shown in the figure corresponding to other embodiments of the IC card are possible, and can be easily implemented by those skilled in the art with reference to the above embodiments.
[0046]
【Example】
(Example)
An embodiment will be described with reference to FIGS.
<Preparation of antenna sheet>
As the antenna sheet, a material obtained by laminating a milky white vinyl chloride core sheet 211 having a thickness of 360 μm and a copper foil having a thickness of 40 μm was used. The copper foil surface was etched by a photoetching method to form an antenna coil 24 and four antenna coil connection ends 241a, 241b, 242a, and 242b, as shown in FIGS.
The antenna coil 24 was formed so as to go around the card base several times, and the connection end portion of each antenna coil was formed to have a flat plate shape of 2 mm × 3 mm.
[0047]
<Preparation of card base>
The card substrate 21 is formed by tying together a 360 μm thick milky white vinyl chloride core sheet 211 and a 360 μm thick milky white vinyl chloride core sheet 212 formed with an antenna coil 24 and an antenna coil connecting end. A 50 μm-thick transparent vinyl chloride oversheet 213 is combined on the back side, and a 50 μm-thick transparent vinyl chloride oversheet 214 is combined on the front side.
The stack of card base materials is introduced into a press machine, cooled by hot press (conditions: 0.03 MPa, 150 ° C., time 40 minutes), brought into an integrated state, and taken out into individual card sizes. Disconnected.
[0048]
<Installation of IC module>
Thereafter, the embedded concave portion 22 for mounting the IC module was excavated by a counterbore method using an end mill. The depth of the first embedded recess 221 was 190 μm and the area was 11.9 × 13.1 mm. The depth of the second embedded recess 222 was set to 640 μm from the card surface, and the size was set to a size (8.0 × 8.0 mm) into which the mold part 11 of the IC module could be fitted.
Next, four conductive recesses with a diameter of 2 mm for antenna connection were excavated from the surface of the first embedded recess using an end mill. By setting the depth of the concave portion for conduction to 430 μm from the surface of the card base body, the depth reaches almost the center of the antenna coil connection end portions 241a, 242a and the like.
[0049]
As the contact / non-contact IC module 10, the IC module 10 shown in FIG. 4 having a contact terminal plate size of 11.8 × 13.0 mm and a thickness of 600 μm was used. A hot melt adhesive sheet having a thickness of 50 μm is pasted on the back surface of the IC module separated from the COT, and the conductive recess is filled with the conductive paste, and then the IC module 10 is embedded in the embedded recess 22. And mounting the IC module by applying a predetermined heat pressure from above the IC module.
In the completed IC card, the terminal is hardly peeled off under severe handling during use, and the non-contact communication function is remarkably reduced.
[0050]
【The invention's effect】
As described above, in the IC card of the present invention, conduction between one non-contact communication function unit pad of the IC module and the antenna coil connection end is performed between the plurality of antenna connection terminals and the antenna coil connection end. Therefore, even if one terminal is peeled off, the entire conduction is not lost, and the reliability and reliability of connection can be increased.
[Brief description of the drawings]
FIG. 1 is a diagram showing an IC card according to a first embodiment of the present invention.
FIG. 2 is a diagram showing an IC card according to a second embodiment of the present invention.
FIG. 3 is a diagram showing an IC card according to a third embodiment of the present invention.
FIG. 4 shows the present invention.Used forIt is a rear view which shows Embodiment 1 of an IC module.
FIG. 5 is a rear view showing a second embodiment of the IC module.
FIG. 6 is a rear view showing a third embodiment of the IC module.
FIG. 7 is a plan view showing an example of a contact / non-contact IC card.
FIG. 8 is a diagram showing an IC module embedded recess.
FIG. 9 is an enlarged cross-sectional view when an IC module is mounted.
[Explanation of symbols]
1 Contact / non-contact IC card
2 IC chip for both contact and non-contact
3 Adhesive sheet
5 circuits
6 Bonding wire
10 IC module
11 Mold part
121-128 Antenna connection terminal
21 IC card base
22 buried recess
24 Antenna coil
151,152 Concave recess
211,212 Core sheet
213,214 Oversheet
221 First embedded recess
222 Second recessed recess
241,242 Antenna coil connection end
241a, 241b, 241c, 241d Antenna coil connection end
242a, 242b, 242c, 242d Antenna coil connection end
A1, A2 Non-contact communication function part pad

Claims (4)

In an IC card having a contact terminal plate, an IC module having both contact and non-contact functions mounted in the embedded recess, and the non-contact communication function part of the IC module connected to the antenna coil in the card base, the IC chip connected to the two antenna connection terminals non-contact communication function part pad 1 is present branches one by one on each long and short sides of the rectangular IC module substrate, four for convenience of the antenna connection terminals has two antenna coils connection end portion is branched into two, respectively outer circumferential region of the IC module embedded recess in the card body, has four coil connection end convenience, you the branch the antenna connection terminal, the first buried concave region of the IC module embedded recess, is adapted to conduct a conductive paste respectively conducting the recess to form four conductive portions convenience, the IC card to be butterflies. In an IC card having a contact terminal plate, an IC module having both contact and non-contact functions mounted in the embedded recess, and the non-contact communication function part of the IC module connected to the antenna coil in the card base, the IC chip connected to four antennas connection terminals non-contact communication function part pad 1 is present branches by two each on the long and short sides of the rectangular IC module substrate, the convenience eight antenna connection terminal And two antenna coil connection ends in the card base branch into four in the outer peripheral area of the IC module embedded recess, and have eight coil connection ends for convenience. a connection terminal, the first buried concave region of the IC module embedded recess, is adapted to conduct a conductive paste respectively conducting the recess to form eight conductive portion convenience, the IC card to be butterflies. In an IC card having a contact terminal plate, an IC module having both contact and non-contact functions mounted in the embedded recess, and the non-contact communication function part of the IC module connected to the antenna coil in the card base, the IC chip One non-contact communication function unit pad is connected to each of the four antenna connection terminals that are branched one by one on the four sides of the rectangular IC module substrate, and has eight antenna connection terminals for convenience. cage, two antenna coils connection end portion is branched into four each in the outer peripheral region of the IC module embedded recess in the card body, has eight coil connection end convenience luer antenna connected to the branch the terminal, the first buried concave region of the IC module embedded recess, is adapted to conduct a conductive paste respectively conducting the recess to form eight conductive portion convenience, it IC card to be characterized. 4. The IC card according to any one of claims 1 to 3, wherein the antenna coil is formed by etching.

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