JPH05298502A - Noncontact type ic card - Google Patents

Abstract

PURPOSE:To obtain a noncontact type IC card provided with an antenna whose characteristic can be changed even after it is shaped with plastic resin and with more appropriate characteristic even in working environment in practical use. CONSTITUTION:An antenna coil 5 can be changed by re-adhering a seal 11 after a card main body 100 is manufactured by employing such constitution that the antenna coil 5 in an antenna constitutional component transmitting/ receiving data in form of wave is formed on the seal 11 adhered on the outside of the card main body 100 separately from the card main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of antenna characteristics of a non-contact type IC card, that is, a corresponding IC card capable of non-contact reading and writing of its contents using radio waves as a medium.

[0002]

2. Description of the Related Art FIG. 29 is a schematic plan view showing an example of a conventional configuration of a non-contact type IC card using this type of radio wave as a medium.

In FIG. 29, reference numeral 1 indicates a non-contact type IC card. The non-contact type IC card 1 is basically constructed by covering a substrate 6 with a plastic resin and hardening it. Various patterns are printed on the substrate 6, the antenna coil 5 is spirally arranged in the peripheral portion thereof, and the non-contact type IC card 1 is necessary in the central portion to achieve various purposes. IC2 with built-in circuit
And various electronic components such as resistors, capacitors, and oscillators 3
And a battery 4 as a power source are arranged.

FIG. 30 is a sectional view taken along line XY of FIG.
The above-mentioned various components are mounted on the substrate 6, and the periphery thereof is covered with the plastic sealing resin 7 to be solidified to form the card body 100, and both sides of the card body 100 are subjected to various printing on a sheet shape. The information storage device 1 is configured by affixing the sticker 8 of FIG.

Further, FIGS. 31 (a) and 31 (b) show this non-contact type
FIG. 31 (a) is an example of a circuit diagram showing a circuit configuration of an LC resonance circuit (antenna resonance circuit) including an antenna coil 5 and a capacitor 9 used by the IC card 1 for transmission and reception of electric waves.
Shows a parallel resonance circuit, and FIG. 31 (b) shows a series resonance circuit.

In such a conventional non-contact type IC card 1, as shown in FIG. 30, each component inside the non-contact type IC card 1 is mounted on a substrate 6, and the periphery thereof is made of plastic. It is covered and hardened with a resin 7 for sealing.
Therefore, the IC 2 in which various circuits are built in, the electronic components 3 such as resistors, capacitors, and oscillators, the battery 4 for operating them, and the antenna coil 5 for actually transmitting and receiving data as radio waves are manufactured. At the stage, it is integrally shaped as a card body 100 that is solidified with the sealing resin 7. Therefore, various built-in parts are completely shut off from the outside. Further, a sheet-shaped sticker 8 on which various kinds of printing are applied is attached to the front surface and the back surface of the card body 100 to form the information storage device 1 as a product. Therefore, it is impossible to change or remove the components inside the non-contact type IC card 1 after shaping, and it is also impossible to replace the coil 5 and the capacitor 9 of the LC resonance circuit.

[0007]

Since the conventional non-contact type IC card is constructed as described above, the characteristics of the antenna are
(Frequency, directivity, sensitivity, etc.) are fixed at the manufacturing stage, and their characteristics cannot be changed after they are integrally shaped or become a product. Therefore, there is a serious problem that the manufacturer cannot quickly respond to different specifications required by the customer. Further, since one type of card can support only one system, there is a problem that the manufacturing cost of the card increases.

The present invention has been made in view of the above problems, and makes it possible to change the characteristics of the antenna even after it has been shaped with a plastic resin, and also in an actual use environment. The purpose is to obtain a non-contact type IC card having an antenna with more appropriate characteristics.

[0009]

A first aspect of the non-contact type IC card of the present invention is to attach an antenna coil of an antenna component for transmitting and receiving data in the form of radio waves to the outside of the card body separately from the card body. The antenna coil can be replaced by replacing the sticker after the card body is manufactured.

A second aspect of the non-contact type IC card of the present invention is that a plurality of antenna coils and / or capacitors among antenna components for transmitting / receiving data in the form of radio waves are built in a card main body, and those are selectively selected. It is configured to attach a seal having a conductor pattern formed thereon so as to be connected to.

In a third aspect of the non-contact type IC card of the present invention, a part of antenna components for transmitting and receiving data in the form of radio waves can be attached and replaced after shaping the card body.

According to a fourth aspect of the non-contact type IC card of the present invention, a variable type is used for a capacitor and / or a coil of an antenna resonance circuit for transmitting and receiving data, and its adjusting terminal is exposed to the outside of the card. There is.

According to a fifth aspect of the non-contact type IC card of the present invention, an antenna is built in the card body, and a sticker whose whole or part is covered with a conductive material is attached to the card body. I have to.

A sixth aspect of the non-contact type IC card of the present invention is the first aspect in which the card body is divided into two parts to include an antenna coil.
And a second portion including other ICs and the like, and the first portion including the antenna coil is configured to be replaceable with the second portion.

[0015]

In the first invention of the non-contact type IC card of the present invention,
The characteristics of the antenna are changed by changing the number of turns, the thickness, the interval, etc. of the antenna coil formed on the sticker attached to the card body.

In the second aspect of the non-contact type IC card of the present invention, the coil and / or the capacitor of the antenna resonance circuit having different antenna characteristics built in the card body are conductors so as to selectively connect them. It is possible to obtain antennas having different frequency characteristics by replacing the seal formed with the.

In the third aspect of the non-contact type IC card of the present invention, the resonance frequency can be freely changed by mounting and replacing the capacitor of the antenna resonance circuit in the card body after shaping the card body. Become.

In the fourth aspect of the non-contact type IC card of the present invention, a variable type is used for the coil and / or the capacitor of the antenna resonance circuit, and the adjustment terminal is exposed on the surface of the card body. It is possible to change the frequency characteristic of the antenna by operating it to adjust the coil and / or the capacitor.

According to the fifth aspect of the non-contact type IC card of the present invention, since a seal having a conductive substance formed on all or part of its surface is attached to the card body, it is built in the card body. The transmitted and received radio waves of the antenna coil are blocked and the characteristics of the antenna change.

According to the sixth aspect of the non-contact type IC card of the present invention, the first portion including one antenna coil of the card body divided into two can be replaced with the second portion including another circuit. Therefore, the antenna characteristic can be changed by replacing the first portion.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. An embodiment of the first invention of the non-contact type IC card of the present invention will be described below with reference to FIGS. 1 to 7. In each of these drawings, the same reference numerals as those in FIGS. 29, 30 and 31 referred to in the above description of the conventional example indicate the same or corresponding portions.

FIG. 1 is a schematic plan view showing the configuration of a first embodiment of the non-contact type IC card according to the present invention.

In FIG. 1, reference numeral 100 indicates the body of the non-contact type IC card of the present invention (hereinafter referred to as the card body). The card body 100 is basically constructed by covering and sealing the substrate 6 with a plastic sealing resin 7. Various patterns are printed on the substrate 6, and in the center thereof, the IC 2 in which the circuits required for the non-contact type IC card 1 of the present invention to achieve various purposes are built-in, resistors, capacitors, Various electronic components 3 such as an oscillator and a battery 4 as a power source are arranged.

Reference numeral 10 is an external terminal provided on the one surface of the card body 100 so as to project from the substrate 6, and its tip is exposed on the surface of the plastic sealing resin 7. And, the card body 100 is not provided with an antenna. It should be noted that the circuit inside the card body 100 is configured such that an antenna circuit is configured when an antenna coil is connected between these two external terminals 10.

FIG. 2 is a sectional view taken along line XY of FIG. However, in FIG. 2, a sticker 11 having a conductor pattern is attached to one surface (the lower surface in FIG. 2) of the card body 100, and the conventional example is attached to the other surface (the upper surface in FIG. 2) of the card body 100. The same seal 8 is attached.

FIG. 3 is a schematic plan view of the seal 11 on which the above-mentioned conductor pattern is formed. The seal 11 includes, for example, a spiral coil antenna coil 5 made of a conductive material such as aluminum or copper, and coil terminals 13 aligned at both ends thereof for connecting to the terminals 10 of the card body 100.
Are formed.

FIG. 4 is a schematic view showing the overall construction of the first embodiment of the non-contact type IC card of the present invention as described above.

A seal 8 is attached to the upper surface and a seal 11 is attached to the lower surface in FIG. At this time, the two terminals 10 exposed on the surface of the plastic sealing resin 7 of the card body 100 and the two coil terminals 13 formed on the seal 11 are connected to each other.

FIGS. 5, 6 and 7 are schematic plan views showing examples in which the thickness, the number of turns, and the line spacing of the antenna coil 5 formed on the seal 11 are made different. Here, for example, in FIG.
In the example shown in (a) and FIG. 5 (b), the thickness of the coil is different, and in the example shown in FIG. 6 (a) and FIG. 6 (b), the number of turns of the coil is different. In the example shown in FIG. 7 (a) and FIG. 7 (b), the coil wire spacing is different.

In the first aspect of the non-contact type IC card of the present invention having such a configuration, the antenna coil 5 of the antenna resonance circuit that actually exchanges data with the outside is installed in the card body 100.
In the card body 100, only the IC 2, various electronic components 3, and the battery 4 as a power source for them are built in the card body 100. The antenna coil 5 for actually transmitting and receiving data to and from the outside is formed on a sticker 11 attached to one surface of the card body 100 to be provided outside the card body 100. Conventionally, the card body 100 is covered with a plastic sealing resin 7 and is solidified without external contacts. However, the non-contact IC of the present invention
In the first invention of the card, the external terminal 10 for connecting the antenna coil 5 is provided on the card body 100 side, and a part thereof is exposed on the surface of the sealing resin 7. Figure 4
Is a schematic diagram showing that state. A seal 8 is attached to one surface of the card body 100, and a terminal 10 for connecting the antenna coil 5 is exposed to the outside on the surface of the sealing resin 7 on the other surface. ing.

Then, the two terminals 10 for the antenna coil provided on the side of the card body 100 and the sheet-like seal
By attaching the spiral coil-shaped antenna coil 5 provided on the 11 side so that the two coil terminals 13 are connected to each other, the resonance circuit L is formed outside the card body 100, and the non-contact type It is intended to change the antenna characteristics of the IC card 1.

The sheet-shaped sticker 11 is used for the card body 10.
It is possible to obtain different antenna characteristics by freely re-assembling after shaping 0. That is, the seal 11 having different antenna coils 5 as shown in FIGS. 5, 6 and 7 may be attached to the card body 100.

Next, one embodiment of the second invention of the non-contact type IC card of the present invention will be described with reference to the drawings. FIG. 8 is a schematic plan view showing the configuration of the second embodiment of the non-contact type IC card of the present invention. In FIG. 8, reference numeral 1 is the non-contact type IC card of the present invention, and other reference numerals 2, 3, 4, 5, 6, 7, 8 are the same as those in the first embodiment.

In FIG. 8, reference numeral 5 is an antenna coil of the LC resonance circuit used by the non-contact type IC card 1 of the present invention for transmitting and receiving data, and is provided in a spiral shape on the peripheral portion of the substrate 6. There is. Further, reference numeral 14 is the card body 100.
, 16 and 17 are external terminals provided at arbitrary positions on the antenna coil 5. These external terminals 14, 15, 16 and 17 are provided so that some of them are exposed from the substrate 6 to one surface of the sealing resin 7 similarly to the external terminal 10 of the first embodiment described above.

Here, the external terminal 14 and the other external terminals 15,
When any one of 16 and 17 is connected, the antenna coils 5 having different numbers of turns are formed. In other words, the plurality of antenna coils 5 are substantially configured in FIG.

FIG. 9 is a sectional view taken along line XY of FIG.
However, in FIG. 9, a seal 19 having a conductor pattern 20 formed of a conductive material such as aluminum or copper is attached to one surface (the lower surface in FIG. 9) of the card body 100 and the other surface. A seal 8 similar to that of the conventional example is attached to (the upper surface in FIG. 9).

FIG. 10 is a schematic diagram showing the overall construction of an embodiment of the second invention of the non-contact type IC card of the present invention as described above.

A seal 8 is attached to the upper surface and a seal 19 (any one of 19a, 19b and 19c) is attached to the lower surface in FIG. Where the seal 19a, 1
9b and 19c respectively have a coil terminal 140 at one end and a coil terminal 150 at the other end so as to connect the external terminals 14 and 15, 16 and 17 provided on the card body 100 side, respectively.
The conductor pattern 20 provided with 160 and 170 respectively is formed. Therefore, when the sticker 19 is attached to the card body 100, the terminal 14 and the sticker 19a (or 19b, which are exposed on one surface of the plastic sealing resin 7 of the card body 100 (or 19b,
19c) coil terminal 140 is connected, and the card body
Terminal 15 (or 16, 17) and seal 19a (or 19b, 19) exposed on the surface of 100 plastic sealing resin 7
The coil terminal 150 (or 160, 170) in c) is connected.

FIG. 11 is a circuit diagram showing the circuit configuration of the antenna resonance circuit of the non-contact type IC card 1 of the second invention of the present invention. When the coil has a large L, a sticker 19a is attached to the card body 100 to connect the terminals 14 and 15. To reduce the L of the coil, a sticker 19c is attached to the card body 100 to connect the terminals 14 and 17. Then, when the L of the coil is set to an intermediate level, the seal 19
Connect terminals 14 and 16 by attaching b to card body 100.

The non-contact type IC of the present invention configured as described above
In one embodiment of the second invention of the card, the card body 100 is provided with an antenna resonance circuit for transmitting and receiving data,
Antenna coil 5 provided in this card body 100
The size of the external terminal 15, 16 or 17 and terminal 14
It is changed by connecting and.

That is, terminals 15, 16 and 17 for connecting the coil to the outside from any position of the antenna coil 5 are provided and are made of a conductive material such as aluminum or copper for connecting to the terminal 14. Seals 19a, 19 having conductor pattern 20
By selectively replacing b, 19c, each terminal 15, 16,
One of the terminals 17 and the terminal 14 are connected to change the size of the antenna coil 5. As understood from FIG. 11, the antenna characteristic of the non-contact type IC card 1 of the present invention can be changed by changing the size of L of the LC resonance circuit.

In the embodiment of the second invention, the characteristic is changed by changing the portion L of the resonance circuit composed of LC in order to change the characteristic of the antenna.
As shown in the circuit diagram of the antenna resonance circuit in FIG. 12, a plurality of capacitors 9a, 9b,
9c is built in, part of these terminals is exposed on the surface of the sealing resin 7 and selectively connected to each terminal 14 in the same manner as in the above embodiment, thereby changing the capacitance of the capacitor and changing the antenna characteristics. It is also possible to obtain It is also possible to use both the change in the size of the coil shown in FIG. 11 and the change in the size of the capacitor shown in FIG. 12 together.

Next, a third embodiment of the non-contact type IC card of the present invention will be described with reference to the drawings.

FIG. 13 is a schematic perspective view showing the structure of the third embodiment of the non-contact type IC card of the present invention. The surface of the non-contact type IC card is sealed with the sealing resin 7, but the seal 8 is formed on the surface thereof. The external appearance of the card main body 100 in the state where is not attached is shown. In the third aspect of the invention, the space 21 for connecting the capacitor of the antenna resonance circuit after the card is shaped
Is provided with a part of the sealing resin 7 forming the card body 100 opened.

FIG. 14 is a sectional view taken along the line XY of FIG. 13, and FIG. 15 is a sectional view taken along the line XY of FIG. 13 showing a state in which the non-contact type IC card 1 is completed. The third invention has the same configuration as the above-mentioned conventional example except that the space 21 opened in the sealing resin 7 of the card body 100 is provided, and the electronic component 3, battery 4, antenna coil 5, The same applies to the case where the substrates 6 and the like are covered with the sealing resin 7 made of plastic. Then, after the substrate 6 is covered with the sealing resin 7 and solidified, as shown in FIG. 14, the capacitor 9 is embedded in the space 21 and the seals 8 are attached to both surfaces thereof, so that the space shown in FIG. Non-contact type, as shown in
It becomes IC card 1.

According to the third aspect of the non-contact type IC card of the present invention having such a configuration, the non-contact type IC card 1 has a battery 4, an IC 2 for performing various processes, a resistor, An electronic component 3 such as a capacitor, an antenna coil 5 for actually transmitting and receiving data, and the like are built in by being sealed with a sealing resin 7. This non-contact type IC card 1 is an LC for transferring data before the sticker 8 is attached.
A space 21 for connecting the capacitor 9 of the resonance circuit is provided in a state where a part of the sealing resin 7 is opened.
The frequency characteristics of the LC resonant circuit can be set variously by fitting the circuit into the circuit.

Further, by making the capacitor 9 removable, the frequency characteristic of the non-contact type IC card 1 can be freely changed by removing the seal 8 and replacing the capacitor 9 with another capacitor.

In the above embodiment, the non-contact type IC card 1 is used.
In order to change the frequency characteristic of, the capacitor 9 of the resonance circuit composed of LC is connected after shaping the card body 100. However, this capacitor 9 is replaced with the oscillator that becomes the clock input of IC2, and the oscillator is replaced by If the connection can be made freely later, the transmission speed of the radio wave can be changed, so that the antenna characteristics of the non-contact type IC card 1 change.

Next, a fourth embodiment of the non-contact type IC card of the present invention will be described with reference to the drawings.

FIG. 16 is a perspective view showing the state of the card body of the fourth non-contact type IC card of the present invention, that is, the state before the sticker 8 is attached to the surface of the non-contact type IC card, FIG. , Figure
18 is a sectional view taken along line XY in FIG.

In the fourth invention, the variable capacitor 9V is used as the capacitor used in the antenna resonance circuit. The adjusting terminal 25 of the variable capacitor 9V is provided in a state of being exposed from the surface of the sealing resin 7 of the card body 100. The resistance value of the variable capacitor 9V can be freely changed before the sticker 8 is attached.

FIG. 19 is a circuit diagram showing the configuration of the antenna resonance circuit of the fourth invention, and FIG. 19 (a) shows a parallel resonance circuit.
Fig. 19 (b) shows series resonant circuits, each of which uses a variable capacitor 9V.

In the fourth invention of the non-contact type IC card of the present invention having such a configuration, the antenna resonance circuit actually used for exchanging data through radio waves is shown in FIG.
Alternatively, the circuit is configured as shown in the parallel type and serial type circuit diagrams in FIG. 19 (b). The characteristics of the antenna can be changed by adjusting the variable capacitor 9V of this antenna resonance circuit. After that, the seal 8 is attached to form the information storage device 1. Further, it is of course possible to change the adjustment of the variable capacitor 9V by peeling off the seal 8 from the information storage device 1 after being constructed as described above.

Although the variable capacitor 9V is used to change the characteristics of the antenna in the fourth embodiment of the present invention, the parallel type and the serial type are shown in FIGS. 20 (a) and 20 (b), respectively. As shown in the circuit diagram, a variable coil 5V is used to form a resonance circuit, and a terminal for adjusting this coil 5V is partially exposed from the sealing resin 7 as in the case described above. The characteristics of the antenna may be changed by adjusting it. Further, as shown in FIG. 21, the antenna resonance circuit may be configured by combining the variable capacitor 9V and the variable coil 5V. Note that Fig. 21 (a) is a circuit diagram showing an example in which the variable capacitor 9V and the variable coil 5V are connected in parallel, and Fig. 21 (a) is an example in which the variable capacitor 9V and the variable coil 5V are connected in series. is there.

Next, a fifth embodiment of the non-contact type IC card of the present invention will be described with reference to the drawings.

FIG. 22 is a schematic diagram showing the construction of an embodiment of the fifth invention, in which a sticker 28, which is partially or entirely formed of a conductive material 27 such as aluminum or copper, is attached to the card body 100. As a result, a part of the antenna coil 5 that transmits and receives data inside the card body 100 is covered, thereby changing the propagation state of radio waves to the antenna coil 5.

FIG. 23 is a schematic diagram showing the overall structure of the fifth embodiment of the present invention. Battery inside card body 100, IC
2. Other components such as the electronic component 3 necessary for operation are omitted.

In FIG. 23, the non-contact type IC card 1 is sealed on one surface of the card body 100 having the antenna coil 5 built therein.
28, and a seal 8 similar to the conventional one is attached to the other surface.

FIG. 24 shows a conventional antenna, and FIG. 25 shows a non-contact type IC card according to the fifth aspect of the present invention. FIG. 3 is a schematic view of the contact type IC card 1 seen from the side in an upright state. As shown in FIG. 24, conventionally, the directivity of the antenna is 8 symmetrical with respect to both surfaces of the non-contact type IC card 1.
It is in the shape of. However, as shown in FIG. 25, in the fifth aspect of the present invention, the directivity of the antenna is asymmetric with respect to both surfaces of the non-contact type IC card 1.

In the conventional non-contact type IC card, the sticker attached to the front surface or the back surface of the card is made of an insulating sheet-like material such as polyester, and the radio waves radiated from the inside of the card pass through this sticker As shown in the schematic diagram of 24, symmetric radio waves are radiated around the card on both sides of the card.

However, in the fifth aspect of the non-contact type IC card of the present invention having the above-mentioned structure, a conductive material is provided so that the front or back surface of the non-contact type IC card 1 covers the antenna coil 5 in the card. A seal 28, some or all of which is covered with
It is configured so that the radio waves can be absorbed or blocked by changing the directivity and strength of the radio waves. Therefore, by replacing the sticker 28 with a sticker having an arbitrary characteristic, the antenna characteristics of the non-contact type IC card 1 can be freely changed. FIG. 25 is a schematic diagram showing a change in the directivity of the antenna when a seal 28 made of aluminum, copper or the like is attached as the conductive material 27 to the back surface of the non-contact type IC card 1, for example.

In the embodiment of the fifth invention, the seal is
Although aluminum, copper, or the like is used as the conductive material 27 in 28, any material may be used as long as it blocks radio waves, and a conductive paint, a shield material, or the like may be attached to the surface of the sheet 28.

Next, a sixth embodiment of the non-contact type IC card of the present invention will be described with reference to the drawings.

FIG. 26 is a perspective view showing the configuration of an embodiment of the sixth invention of the non-contact type IC card of the present invention, and FIG. 27 is a schematic plan view of the same. The non-contact type IC card 1 of the fifth invention
Is composed of two parts, an antenna part 30 as a first part and an operation part 31 as a second part for performing actual data processing and the like, each of which can be independently divided into two parts. Is becoming

FIG. 28 is a sectional view taken along line XY of FIG.
A recess 32 provided on one end face of the antenna unit 30 and a protrusion 33 provided on one end face of the operating unit 31 are engaged with each other and are coupled to each other, whereby one non-contact type IC card 1 is formed. Composed. Reference numerals 2, 3, 4, 5, etc. are the same as those in the conventional example and each of the above-described embodiments.

The non-contact type of the sixth invention of the above construction
In the IC card 1, the antenna unit 30 and the operating unit 31 are completely separated, and the antenna unit 30 is configured to include only the antenna coil 5 that actually exchanges data.
The result of various processing performed by the operating unit 31 is the concave portion 32 and the convex portion.
It is sent to the antenna coil 5 built in the antenna section 30 through a connection terminal (not shown) provided at an arbitrary position of 33, and the resonance circuit capacitor 9 built in the antenna coil 5 and the operation section 31. Use and to send and receive data. Since the antenna unit 30 can be freely replaced, an antenna unit having an antenna having arbitrary characteristics is built in.
By combining 30 with the operation unit 31, different antenna characteristics can be obtained freely.

In the above-described sixth embodiment of the present invention, the concave portion 32 and the convex portion 33 are used to connect the antenna portion 30 and the operating portion 31 to each other so that they mesh with each other. The connection may be of any configuration, including the antenna unit 30 and the operating unit.
Any structure may be used as long as it can be securely connected to 31. Therefore, for example, in the above-described embodiment, the combination of the concave portion 32 and the convex portion 33 is adopted so that the antenna portion 30 and the operating portion 31 are firmly coupled to each other to form one non-contact type IC card 1. However, it goes without saying that a hinge structure may be adopted so that the user can fold the non-contact type IC card 1 in two when carrying it.

[0068]

According to the first aspect of the present invention, since the antenna coil is formed on the seal and attached to the card body, the antenna is provided outside the card body. It is possible to change easily and inexpensively only by changing.

According to the second invention, a plurality of antenna coils and / or capacitors having different characteristics are built in the card body. Since it has a structure that can be selectively connected and switched by a sticker attached to the card body, it becomes possible to collectively manufacture card bodies compatible with multiple systems, and the card manufacturing cost Is reduced.

According to the third aspect of the invention, since the capacitor of the antenna resonance circuit and the like can be mounted after the card body is constructed, the customer requests the transmission / reception frequency or the data transmission speed. The characteristics of the antenna can be changed quickly and easily according to the specifications.

According to the fourth aspect of the invention, since the variable type is used for the capacitor and / or the coil of the antenna resonance circuit so that its characteristics can be adjusted from the outside, the resonance frequency can be continuously changed arbitrarily. Therefore, the matching with the sensor actually used can be made more accurate. As a result, it is difficult to pick up noise, and the communication distance is extended.

According to the fifth aspect of the invention, since the material for blocking or absorbing the radio wave is attached to the card by using the sticker, the antenna characteristics of the card match the environment of actual use. It is possible to change the directivity of radio waves, the sensitivity of transmission and reception, etc. inexpensively and easily.

According to the sixth aspect of the invention, since the antenna section and the operating section can be divided, a card having arbitrary antenna characteristics can be obtained only by replacing the antenna section, and the card is divided into two when carried. As a result, the size becomes smaller and the external force such as bending cracks becomes stronger, so that it is convenient to carry and the like.

In any of the first to sixth inventions, the characteristics (frequency, directivity, sensitivity, etc.) of the antenna for actually transmitting and receiving data in the form of radio waves can be freely and easily changed after the manufacture of the card body. It has a great effect that it is possible.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the configuration of a first embodiment of a non-contact type IC card according to the present invention.

FIG. 2 is a sectional view taken along line XY of FIG.

FIG. 3 is a schematic plan view of a seal on which a conductor pattern of the first invention is formed.

FIG. 4 is a schematic diagram showing the overall configuration of the first embodiment of the non-contact type IC card of the present invention.

FIG. 5 is a schematic plan view showing an example in which the thickness of the antenna coil formed in the seal of the first invention is different.

FIG. 6 is a schematic plan view showing an example in which the number of turns of the antenna coil formed in the seal of the first invention is different.

FIG. 7 is a schematic plan view showing an example in which the line intervals of the antenna coils formed in the seal of the first invention are different.

FIG. 8 is a schematic plan view showing the configuration of a second embodiment of the non-contact type IC card of the present invention.

9 is a cross-sectional view taken along the line XY of FIG.

FIG. 10 is a schematic diagram showing the overall configuration of a second embodiment of the non-contact type IC card of the present invention.

FIG. 11 is a circuit diagram showing a circuit configuration of an antenna resonance circuit of the non-contact type IC card of the second invention of the present invention.

FIG. 12 is a circuit diagram of an antenna resonance circuit showing the configuration of another embodiment of the second invention of the non-contact type IC card of the present invention.

FIG. 13 is a schematic perspective view showing the configuration of a third embodiment of the non-contact type IC card of the present invention.

14 is a cross-sectional view taken along line XY of FIG.

FIG. 15 is a cross-sectional view taken along line XY of FIG. 13, showing a state in which the contactless IC card is completed.

FIG. 16 is a perspective view showing the state of the card body of the fourth aspect of the non-contact type IC card of the present invention, that is, the state before the sticker is attached to the surface of the non-contact type IC card.

17 is a cross-sectional view taken along the line XY of FIG.

18 is a cross-sectional view taken along the line XY of FIG.

FIG. 19 is a circuit diagram showing a configuration of an antenna resonance circuit of a fourth invention, FIG. 19 (a) showing a parallel resonance circuit and FIG. 19 (b) showing a series resonance circuit.

FIG. 20 is a circuit diagram of an antenna resonance circuit showing the configuration of another embodiment of the fourth invention of the non-contact type IC card of the present invention.

FIG. 21 is a circuit diagram of an antenna resonance circuit showing the configuration of still another embodiment of the fourth aspect of the non-contact type IC card of the present invention.

FIG. 22 is a schematic diagram showing the structure of an embodiment of the fifth invention.

FIG. 23 is a schematic view showing the overall constitution of the embodiment of the fifth invention.

FIG. 24 is a schematic view of the directivity of an antenna formed of an antenna resonance circuit built in a conventional non-contact type IC card as seen from the side in a state where the non-contact type IC card is erected.

FIG. 25 is a schematic diagram of a non-contact type IC card according to the fifth aspect of the present invention, in which the directivity of an antenna including an antenna resonance circuit built in the non-contact type IC card 1 is changed horizontally when the non-contact type IC card is set up. It is the schematic diagram seen from.

FIG. 26 is a perspective view showing the configuration of a sixth embodiment of the non-contact type IC card of the present invention.

FIG. 27 is a schematic plan view showing the configuration of an example of a sixth invention of the non-contact type IC card of the present invention.

28 is a cross-sectional view taken along the line XY of FIG.

FIG. 29 is a schematic plan view showing an example of a conventional configuration of a non-contact type IC card.

30 is a cross-sectional view taken along the line XY of FIG.

FIG. 31 is an example of a circuit diagram showing a circuit configuration of an LC resonance circuit (antenna resonance circuit), FIG. 31 (a) shows a parallel resonance circuit, and FIG. 31 (b) shows a series resonance circuit.

[Explanation of symbols]

 1 Non-contact type IC card 2 IC 5 Antenna coil 5V Variable coil 8 Seal 9 Capacitor 9a Capacitor 9b Capacitor 9c Capacitor 9V Variable capacitor 10 External terminal 11 Seal 14 External terminal 15 External terminal 16 External terminal 17 External terminal 19 Seal 20 Conductor pattern 21 Space 25 Adjustable capacitor adjustment terminal 27 Conductive material 28 Seal 30 Antenna section 31 Operating section 100 Card body

Claims (6)

[Claims] 1. A card body and a sheet-like sticker attached to at least one surface of the card body, comprising an antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using radio waves as a medium. In the non-contact type IC card constituted by, the card body has at least two terminals exposed on one surface thereof, and the antenna resonance circuit is provided when both ends of the coil are connected to the two terminals, respectively. And the seal has the coil in which conductors are formed in a spiral coil shape so that both ends thereof come into contact with the two terminals, respectively. A non-contact type IC card, wherein the seal having a characteristic coil is attached to the card body in a replaceable manner. 2. A card main body and a sheet-like sticker attached to at least one surface of the card main body, the antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using radio waves as a medium. In the non-contact type IC card configured by, the card body contains a plurality of the coils and / or capacitors, and the seal selectively connects the plurality of coils and / or capacitors to an antenna resonance circuit. A non-contact, characterized in that the seals, each of which has a conductor formed so as to form a different antenna resonance circuit, are replaceably attached to the card body. Type IC card. 3. A non-contact type IC card having a card main body with an antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using radio waves as a medium, wherein the card main body is A non-contact type, which has a recess configured so as to form an antenna resonance circuit when a capacitor is mounted inside, and capacitors each having different characteristics are mounted to the recess in a replaceable manner. IC card. 4. A non-contact type IC card having a card main body with an antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using a radio wave as a medium, the coil and / or the capacitor. Is a variable capacitance type,
A non-contact type IC card, wherein the capacity adjusting terminal is exposed on the surface of the card body. 5. A card body provided with an antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using radio waves as a medium, and a sheet-like sticker attached to at least one surface of the card body. In the non-contact type IC card composed of, the seal has a part or all of its surface covered with a conductive substance, and each of the seals has a different area covered with a conductive substance. A non-contact type IC card, which is replaceably attached to the card body. 6. A non-contact type IC card having a card body with an antenna resonance circuit having a coil and a capacitor for transmitting and receiving data to and from the outside in a non-contact state using a radio wave as a medium, wherein the card body comprises: The first portion in which the coil of the antenna resonance circuit is formed and the second portion in which the circuit other than the coil is formed are dividable, and the first portion in which the antenna resonance circuit having different characteristics is formed. The non-contact type IC card, wherein the part of the above is removably mounted on the second part.