JP2001251115A - Antenna sheet and non-contact data carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact data carrier having an antenna coil formed on the surface of an insulation base material and capable of adjusting the inductance of the antenna coil. SOLUTION: This non-contact data carrier 120 has an insulation base material 29, an antenna coil 25 composed of a circulating line pattern 26 formed on the surface of the material 29, and an IC chip 28 connected to both ends 22A the 22B of the coil 25. A plurality of line patterns 26A to 26C dividing an area enclosed by the innermost line pattern 26I are connected to the innermost line pattern 26I of the coil 25. Inductance between both ends of the coil 25 can be changed by disconnecting any of the plurality of line patterns 26A to 26C so that a preliminarily set target can be set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an antenna sheet having an antenna coil and a non-contact data carrier using the antenna sheet.

[0002]

2. Description of the Related Art A non-contact data carrier having an antenna coil is used in a shoplifting prevention device, a distribution system, and the like. Such a non-contact data carrier is used, for example, attached to a product packaging box or a product itself.

When manufacturing a non-contact data carrier,
An antenna coil can be formed by circling a line pattern on an insulating base material (insulating base material). When an antenna coil is manufactured, manufacturing variations generally occur. This manufacturing variation changes the characteristics of the antenna coil and affects the performance of the non-contact data carrier.

[0004]

For this reason, it is desired that the inductance of the antenna coil can be adjusted between the antenna sheet on which the antenna coil is formed and the non-contact type data carrier using the antenna sheet. In addition, it is desired that the inductance of the antenna coil and / or the capacitance of the capacitor can be adjusted between the antenna sheet on which the antenna coil and the capacitor are formed and the non-contact type data carrier using the antenna sheet.

A first object of the present invention is to provide a non-contact data carrier capable of adjusting the inductance of an antenna coil and an antenna sheet usable for the non-contact data carrier. A second object of the present invention is a non-contact data carrier on which an antenna coil and a capacitor are formed, wherein the non-contact data carrier is capable of adjusting the inductance of the antenna coil and / or the capacitance of the capacitor. An antenna sheet usable for a non-contact data carrier.

[0006]

A first antenna sheet according to the present invention has an insulating base, an antenna coil formed on a surface of the insulating base, and a capacitor connected to the antenna coil. In the antenna sheet, the capacitor is formed on one of M electrode plates (M is an integer of 2 or more) formed on one surface of the insulating base material and on the other surface of the insulating base material. Having the M electrode plates and the other electrode plate facing the M electrode plates via the insulating base material,
The one of the M electrode plates is connected to each other.

The first antenna sheet according to the present invention is preferably provided with a hole for cutting any one of the M electrode plates. The first antenna sheet according to the present invention includes:
More preferably, the other electrode plate has M other electrode plates connected to each other, and the M other electrode plates are corresponding to the M one electrode plate. And the hole penetrates the insulating base material and is smaller than the electrode plate in which the hole is formed among the M electrode plates.

In the first antenna sheet according to the present invention, more preferably, the capacitor and the antenna coil form a resonance circuit, and the resonance frequency of the capacitor and the antenna coil is set in advance in the hole. Has a magnitude such that the frequency is adjusted.

[0009] A first non-contact data carrier according to the present invention includes an insulating base, an antenna coil formed on a surface of the insulating base, a capacitor connected to the antenna coil, and an antenna coil. A non-contact data carrier having members connected to both ends, wherein the capacitor comprises: M (M is an integer of 2 or more) one electrode plate formed on one surface of the insulating base material; Having the other electrode plate formed on the other surface of the insulating base and facing the M one electrode plate via the insulating base, the M one electrode plate, The electrode plates are connected to each other.

[0010] In the first non-contact data carrier according to the present invention, preferably, a hole for cutting any one of the M electrode plates is formed. In the first non-contact data carrier according to the present invention, more preferably, the other electrode plate has M other electrode plates connected to each other, and the M other electrode plates are connected to each other. An electrode plate faces the corresponding one of the M electrode plates, the hole penetrates the insulating base material, and the electrode plate in which the hole is formed among the M electrode plates Less than.

In the first non-contact data carrier according to the present invention, more preferably, the capacitor and the antenna coil form a resonance circuit, and the hole has a resonance frequency formed by the capacitor and the antenna coil. Has a magnitude such that the frequency becomes a preset frequency.

In the first non-contact data carrier according to the present invention, for example, the member has an IC chip, a capacitor or a conductive member provided with a terminal pair consisting of one electrode terminal and the other electrode terminal. The one electrode terminal may be connected to one end of the antenna coil, and the other electrode terminal may be connected to the other end of the antenna coil.

A second antenna sheet according to the present invention has an insulating base material and an antenna coil formed of a circling line pattern formed on the surface of the insulating base material. The line pattern is connected to a single or a plurality of line patterns that divide a region surrounded by the innermost line pattern.

In the second antenna sheet according to the present invention,
Preferably, the single line pattern is cut or one of the plurality of line patterns is cut so that the inductance between both ends of the antenna coil becomes a preset value.

[0015] A second non-contact data carrier according to the present invention includes an insulating base, an antenna coil formed of a circulating line pattern formed on the surface of the insulating base, and connected to both ends of the antenna coil. A single or a plurality of line patterns for dividing an area surrounded by the innermost line pattern are connected to the innermost line pattern of the antenna coil.

In a second non-contact data carrier according to the present invention, for example, the member has an IC chip, a capacitor or a conductive member having a terminal pair consisting of one electrode terminal and the other electrode terminal; The one electrode terminal may be connected to one end of the antenna coil, and the other electrode terminal may be connected to the other end of the antenna coil.

In the second non-contact data carrier according to the present invention, for example, the member has a capacitor, the capacitor and the antenna coil form a resonance circuit, and the resonance by the capacitor and the antenna coil is performed. The single line pattern may be cut or the plurality of line patterns may be cut so that the frequency becomes a preset frequency.

In the second non-contact data carrier according to the present invention, for example, the single line pattern is cut so that the inductance between both ends of the antenna coil has a predetermined value, or Any one of the plurality of line patterns may be cut.

A third antenna sheet according to the present invention includes an insulating base, a first antenna coil and a first pad formed on one surface of the insulating base, and the other of the insulating base. A second antenna coil formed on the surface and a second antenna coil;
Wherein the first pad is connected to one end of the first antenna coil, the second pad is connected to one end of the second antenna coil, The first and second pads are connected to each other by caulking, and are positioned so that the inductance from the other end of the first antenna coil to the other end of the second antenna coil has a predetermined value. The caulking is formed at the bottom.

A fourth antenna sheet according to the present invention includes an insulating base, a first antenna coil and a first pad formed on one surface of the insulating base, and the other of the insulating base. A second antenna coil formed on the surface and a second antenna coil;
And a capacitor connected to the other ends of the first and second antenna coils, wherein the first pad is connected to one end of the first antenna coil, and Are connected to one end of the second antenna coil, the first and second pads are connected to each other by caulking, and the first and second antenna coils and the capacitor are A resonance circuit is configured such that a resonance frequency based on an inductance from the other end of the first antenna coil to the other end of the second antenna coil and a capacitance of the capacitor becomes a preset frequency. The caulking is formed at an appropriate position.

In the fourth antenna sheet according to the present invention,
Preferably, the capacitor is formed on one surface of the insulating base, one electrode plate connected to the other end of the first antenna coil, and formed on the other surface of the insulating base. And the other antenna plate connected to the other end of the second antenna coil and facing the one electrode plate.

[0022] A third non-contact data carrier according to the present invention comprises: an insulating base; a first antenna coil and a first pad formed on one surface of the insulating base; A second antenna coil and a second pad formed on the other surface of the first and second antenna coils, and an IC chip connected to the other ends of the first and second antenna coils.
Is connected to one end of the first antenna coil, the second pad is connected to one end of the second antenna coil, and the first and second pads are caulked. Are connected to each other by the first
The caulking is formed at a position where the inductance from the other end of the antenna coil to the other end of the second antenna coil has a predetermined value.

In a third non-contact data carrier according to the present invention, for example, the IC chip has a terminal pair including one electrode terminal and the other electrode terminal, and the one electrode terminal is connected to the first electrode terminal. The other electrode terminal may be connected to the other end of the one antenna coil, and the other electrode terminal may be connected to the other end of the second antenna coil.

[0024] A fourth non-contact data carrier according to the present invention comprises an insulating base, a first antenna coil formed on one surface of the insulating base, and a first antenna coil formed on one surface of the insulating base. A first pad formed and connected to one end of the first antenna coil; a second antenna coil formed on the other surface of the insulating base; and a second pad formed on the other surface of the insulating base. And a second pad connected to one end of the second antenna coil and facing the first pad, and a capacitor and an IC chip connected to the other ends of the first and second antenna coils. Wherein the first and second pads are connected to each other by swaging,
The first and second antenna coils and the capacitor constitute a resonance circuit, and have an inductance from the other end of the first antenna coil to the other end of the second antenna coil and an electrostatic capacitance of the capacitor. The caulking is formed at a position where the resonance frequency due to the capacitance becomes a preset frequency.

In the fourth non-contact data carrier according to the present invention, preferably, the capacitor is formed on one surface of the insulating base and connected to the other end of the first antenna coil. It has one electrode plate and the other electrode plate formed on the other surface of the insulating base material, connected to the other end of the second antenna coil, and facing the one electrode plate.

In a fourth non-contact data carrier according to the present invention, for example, the IC chip has a terminal pair consisting of one electrode terminal and the other electrode terminal, and the one electrode terminal is connected to the first electrode terminal. The other electrode terminal may be connected to the other end of the one antenna coil, and the other electrode terminal may be connected to the other end of the second antenna coil.

The above-described first antenna sheet and first antenna sheet
In the non-contact type data carrier, the M electrode plates of the capacitor are connected to each other. With the holes for shaving any of the M electrode plates, the opposing area of the electrode plates can be reduced and the capacitance can be changed, so that the capacitance can be adjusted and tuning accuracy can be improved.

The above-described second antenna sheet and second antenna sheet
In the non-contact type data carrier described above, a single or a plurality of line patterns for dividing a region surrounded by the innermost line pattern are connected to the innermost line pattern of the antenna coil. By cutting the single line pattern or cutting any of the plurality of line patterns, the inductance between both ends of the antenna coil can be changed, and the inductance can be adjusted.

In the third and fourth antenna sheets and the third and fourth non-contact data carriers described above, one ends of the first and second antenna coils are connected to the corresponding first and second pads. Have been. The inductance from the other end of the first antenna coil to the other end of the second antenna coil can be changed by the swaging position formed on the first and second pads, and the inductance can be adjusted and Tuning accuracy can be improved.

[0030]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The antenna sheet 10 1 is a schematic configuration diagram showing a first embodiment of an antenna sheet according to the present invention. This antenna sheet 1
0 has an insulating base material 9, pads 11, 12, an antenna coil 5, wiring patterns 15A, 15B, and a capacitor 15.

The insulating base material 9 is, for example, about 5 μm to about 30 μm.
Polyester, polyethylene, polypropylene, polystyrene, PET having a constant or almost constant thickness of 0 μm
(Polyethylene terephthalate) or the like. The insulating substrate 9 preferably has a thickness of about 15 μm to about 100 μm.
μm polyester or polyethylene. The insulating base material 9 is a rectangular base material in FIG.

On one surface of the insulating base material 9, the antenna coil 5, the pads 11, 12, the wiring pattern 15A,
Conductive patterns 1A to 4A are formed. On the other surface of the insulating base material 9, a wiring pattern 15B and conductor patterns 1B to 4B are formed. Conductor pattern 1B ~
4B shows the corresponding conductor patterns 1A to 4A and the insulating base material 9
Are opposed to each other.

One pad 11 is connected to one end of the antenna coil 5. The other pad 12 is connected to the other end of the antenna coil 5 via the through holes 13 and 14 and the wiring pattern 15B. One pad 1
The number of turns of the line pattern 6 from 1 to the other pad 12 is 6
It is. The antenna coil 5 is, for example, about 5 μm to about 5 μm.
A copper foil, iron foil, aluminum foil, or the like having a constant or substantially constant thickness of 0 μm is used, preferably an aluminum foil.

The four conductor patterns 1A to 4A constitute one electrode plate of the capacitor 15, and have the same or substantially the same area. The conductor pattern 1A is connected to the conductor patterns 2A and 4A via a narrow wiring pattern. This conductor pattern 1A is composed of conductor patterns 2A and 4
Next to A. The conductor pattern 2A is connected to the innermost line pattern of the antenna coil 5 via the wiring pattern 15A. The conductor pattern 3A is connected to the conductor patterns 2A and 4A via a narrow wiring pattern. The conductor pattern 3A is composed of the conductor patterns 2A,
It is adjacent to 4A.

The four conductor patterns 1B to 4B constitute the other electrode plate of the capacitor 15, and have the same or substantially the same area. The conductor pattern 1B is connected to the wiring pattern 15B, and is connected to the conductor patterns 2B and 4B via a narrow wiring pattern. The conductor pattern 1B is adjacent to the conductor patterns 2B and 4B. The conductor pattern 3B is connected to the conductor patterns 2B and 4B via a narrow wiring pattern. The conductor pattern 3B is adjacent to the conductor patterns 2B and 4B.

The antenna sheet 10 has an insulating substrate 9
3C that penetrates through and cuts the conductor patterns 3A and 3B
Are formed. The hole 3C allows the conductor pattern 3
A, the facing area of 3B is reduced, and the conductor pattern 3
The capacitance due to A and 3B is small. The capacitor 15 and the antenna coil 5 form a resonance circuit.
Has a magnitude such that the resonance frequency is a target frequency set in advance.

FIG. 2 shows a case where the antenna sheet 10 of FIG. 1 is cut parallel to the long side of the insulating base material 9 so as to pass through the line pattern 6, the conductor patterns 4A, 4B, 3A, 3B, and the holes 3C. It is explanatory sectional drawing of.

In the antenna sheet 10, both electrode plates (both conductor patterns) 3 penetrating the insulating base material 9 and facing each other.
The hole 3C for shaving the holes A and 3B can reduce the facing area of the electrode plates 3A and 3B to change the capacitance, thereby making it possible to adjust the capacitance and improve the tuning accuracy, and to increase the resonance frequency. Can approach or match the target frequency.

Further, holes are further formed in the conductor patterns 3A and 3B, and the holes are formed in the adjacent conductor patterns 2A and 3B.
The conductor patterns 3A and 3B are electrically separated by providing them at positions overlapping the connection points with the conductor patterns A and 2B and / or at positions overlapping the connection points with the conductor patterns 4A and 4B. Can be reduced from.

Non-Contact Data Carrier 110 FIG. 3 is a schematic structural view showing a first embodiment of the non-contact data carrier according to the present invention. This non-contact data carrier 110 has a configuration in which a member made of an IC chip 8 is mounted on the antenna sheet 10 of FIG. 1 and the IC chip 8 is connected to pads 11 and 12. Note that I
The C chip 8 is provided so that the state of the pads 11 and 12 can be understood.
In the figure, it is shown by a square frame.

On the circuit forming surface of the IC chip 8, a terminal pair consisting of one electrode terminal and the other electrode terminal is formed. One electrode terminal corresponds to one pad 11, and the other electrode terminal is It corresponds to the other pad 12. The terminal pair of the IC chip 8 is connected to the pads 11 and 12 via bumps, and the IC chip 8 is flip-chip mounted.

The non-contact data carrier 110 may be manufactured by the following procedures (1) to (4) as an example. (1) A plurality of antenna sheet materials are formed by dry laminating an insulating substrate 9 made of a transparent biaxially stretched polyester film having a thickness of about 38 μm and an aluminum foil having a thickness of about 30 μm. (2) Conductor patterns 1A to 1 of antenna coil 5 and capacitor 15 on the surface of aluminum foil using photoresist.
The first antenna sheet is generated by developing the 4A, the pads 11, 12 and the wiring pattern 15A and etching the aluminum portion with ferric chloride.

(3) Conductor patterns 1 B to 4 of capacitor 15 on the surface of aluminum foil by photoresist
B, the wiring pattern 15B and the like are developed, and the aluminum is etched with ferric chloride to produce a second antenna sheet. (4) The first and second antenna sheets are stacked in two layers,
The antenna sheet 10 is formed by forming through holes 13 and 14.
Is generated, and the IC chip 8 is mounted on the antenna sheet 10. For example, when the resonance frequency between the pads 11 and 12 deviates from the target frequency by about 3%, the target frequency is formed by forming holes in the conductor patterns 2A, 2B, 3A and 3B using a jig. It is possible to match

In the non-contact data carrier 110,
The antenna coil 5, the wiring pattern 15A, and the conductor patterns 1A to 4A are covered with an insulating film (insulating layer) made of an insulating resist material, and the pads 11 and 12 are exposed to make the IC
The chip 8 may be connected, and the pads 11 and 12
Of these, only the connection portion with the IC chip 8 may be exposed, and the other portion may be covered with an insulating film.

The pads 11 and 12, the antenna coil 5, the IC chip 8,
An insulating protection layer (not shown) is formed to cover the conductor patterns 1A to 4A and the wiring pattern 15A.
In addition, an insulating protective layer (not shown) is formed on the entire surface of the other surface of the insulating base material 9 so as to cover the conductor patterns 1B to 4B and the wiring pattern 15B. Then, it is affixed to a product packaging box or the product itself, and is used for, for example, a tag or a label.

Antenna Sheet 20 FIG. 4 is a schematic structural view showing a second embodiment of the antenna sheet according to the present invention. This antenna sheet 2
0 has an insulating base material 29, an antenna coil 25, and marks 21A, 21B, 23A, 23B.

The insulating base 29 is, for example, about 5 μm to about 3 μm.
Polyester having a constant or substantially constant thickness of 00 μm,
Polyethylene, polypropylene, polystyrene, PET
(Polyethylene terephthalate) or the like. The insulating substrate 29 preferably has a thickness of about 15 μm to about 10 μm.
0 μm polyester or polyethylene. The insulating base material 29 is a rectangular base material in FIG. On one surface of the insulating base material 29, the antenna coil 5 and the mark 2
1A, 21B, 23A, 23B and line patterns 26A to
26C are formed.

In the vicinity of one end 22A and the other end 22B of the antenna coil 25, marks 21A, 21B, 23A,
3B is formed. One end 22 of antenna coil 25
The number of turns of the line pattern 26 from A to the other end 22B is six. The antenna coil 25 is, for example, about 5 μm to about 50 μm.
A copper foil, iron foil, aluminum foil, or the like having a constant or substantially constant thickness of μm is used, preferably an aluminum foil.

On the surface of the insulating base material 29, an antenna coil 25 composed of a line pattern 26 circling along the periphery is formed. A plurality of line patterns 26A to 26C that divide a region surrounded by the innermost line pattern 26I are connected to the innermost line pattern 26I of the antenna coil 25.

By cutting the line pattern 26A in the antenna sheet 20, compared with the case where the line pattern 26A is not cut, both ends 22A and 2A of the antenna coil 25 are cut.
The inductance between 2B can be increased. Further, by cutting the line pattern 26B, the antenna coil 25
, The inductance between both ends 22A and 22B can be further increased. Furthermore, by cutting the line pattern 26C, the inductance between both ends 22A and 22B of the antenna coil 25 can be further increased as compared with the case where the line pattern 26C is not cut.

As described above, the plurality of line patterns 26A to 26A-2
By cutting any of 6C, the inductance between both ends of the antenna coil 25 can be changed, and the inductance can be adjusted. When cutting the plurality of line patterns 26A to 26C, the antenna coil 25
By cutting from the side closer to the inner peripheral terminal 22A, it is possible to gradually increase the inductance between the terminals 22A and 22B according to the number of cuts.

FIG. 5 is a partially enlarged view of the vicinity of both ends of the antenna coil 25 in the antenna sheet 20 of FIG. Near the one end 22A of the antenna coil 25, a circular mark 21A is formed by a conductor pattern. In the vicinity of the other end 22B of the antenna coil 25,
A circular mark 21B is formed by the conductor pattern.

The line pattern 2 of the antenna coil 25
6, square marks 23A and 23B are formed by a conductor pattern. Marks 21A, 21B, 23
A and 23B are arranged such that a straight line connecting the centers of the circular marks 21A and 21B and a straight line connecting the centers of the square marks 23A and 23B are orthogonal or substantially orthogonal.

Non-Contact Data Carrier 120 FIG. 6 is a schematic diagram showing a second embodiment of the non-contact data carrier according to the present invention. The non-contact data carrier 120 has a configuration in which a member including an IC chip 28 is mounted on the antenna sheet 20 of FIG. 4, and the IC chip 28 is connected to terminals 22A and 22B. The IC chip 28 is shown by a square frame in the figure so that the states of the terminals 22A, 22B and the like can be understood. FIG.
FIG. 7 is a partially enlarged view in which the vicinity of both ends of the antenna coil 25 in the non-contact data carrier 120 of FIG. 6 is enlarged.

On the circuit formation surface of the IC chip 28, a terminal pair including one electrode terminal and the other electrode terminal is formed. One electrode terminal corresponds to one terminal 22A, and the other electrode terminal corresponds to one terminal 22A. It corresponds to the other terminal 22B. IC
The terminal pairs of the chip 28 are connected to the terminals 22A and 22A via bumps.
2B, and the IC chip 28 is flip-chip mounted.

The non-contact data carrier 120 may be manufactured by the following procedures (5) to (7) as an example. (5) A material for an antenna sheet is produced by dry laminating an insulating substrate 29 made of a transparent biaxially stretched polyester film having a thickness of about 38 μm and an aluminum foil having a thickness of about 30 μm. (6) The antenna coil 25 and the marks 21A, 21B, 23A, 23 are formed on the surface of the aluminum foil by gravure printing with a resist ink using a thermoreversible resin as a binder.
B pattern is formed.

(7) By etching the aluminum portion using a sodium hydroxide solution as an etchant, an antenna sheet 20 composed of an antenna sheet is generated, and an IC chip 28 is mounted on the antenna sheet 20. This I
On the circuit forming surface of the C chip 28, a capacitor is patterned in advance. Then, for example, the terminals 22A, 22
When the resonance frequency between B and the target frequency is shifted by about 5%, a through hole is formed by a jig to form a line pattern 26.
By cutting any of A to 26C, it is possible to match the target frequency. Or, for example, the terminal 22
When the inductance between A and 22B deviates from the target value by about 5%, a through hole is formed by a jig and one of the line patterns 26A to 26C is cut to make the line pattern match the target value. It is possible.

In the non-contact data carrier 120,
The antenna coil 25 and the marks 21A and 21B may be covered with an insulating film (insulating layer) made of an insulating resist material to expose the terminals 22A and 22B and the marks 23A and 23B to connect the IC chip 28. Is terminal 22
Of A and 22B, only the connection portion with the IC chip 28 may be exposed, and the other portion may be covered with an insulating film.

The circular marks 21A and 21B are used for positioning when the IC chip 28 is flip-chip mounted. For example, when mounting the IC chip 28 using a mounting device such as a flip chip bonder, the mark 2
By photographing 1A and 21B and performing image processing, it is possible to mount the camera at an accurate position. In mounting the IC chip 28, one of the square marks 23A and 23B is used, and the one mark and the terminals 22A and 22B are used.
B by bonding the surface electrode of the IC chip 28 to the IC
The tips 28 are joined at three places to improve stability.

The antenna coil 25, the IC chip 28, the mark 21A,
21B and the line patterns 26A to 26C,
An insulative protection layer (not shown) is formed. Then, it is affixed to a product packaging box or the product itself, and is used for, for example, a tag or a label.

[0062] Antenna sheet 30 FIGS. 8 and 9, the third antenna sheet according to the present invention
It is a schematic structure figure showing an embodiment. FIG. 8 is a schematic explanatory view showing one surface of the antenna sheet 30 according to the present invention. FIG. 9 is a schematic explanatory view showing the other surface of the antenna sheet 30 according to the present invention. The antenna sheet 30 includes an insulating base material 39 and an antenna coil 3
5, 45, and pads 31, 32, 33, 37, 47,
The wiring patterns 35A, 35B and the conductor patterns 34A,
34B.

The insulating base material 39 is made of, for example, a synthetic resin such as PET (polyethylene terephthalate), and is a rectangular base material in FIG. One surface 39 of the insulating base material 39
A includes an antenna coil 35 and pads 31, 32, 3
7, a conductor pattern 34A, and a wiring pattern 35A are formed.

The pad 37 is connected to one end of the antenna coil 35. The pad 31 has an antenna coil 35
Is connected to the other end. Further, the pad 31 is connected to the conductor pattern 34A via the wiring pattern 35A. The antenna coil 35 is composed of a line pattern 36 circling along the periphery of the insulating base material 39, and the outermost line pattern 36 </ b> Z is connected to the pad 37. The conductor pattern 34A is formed on the inner peripheral side of the antenna coil 35.

On the other surface 39B of the insulating base material 39, an antenna coil 45, pads 33 and 47, a conductor pattern 34B, and a wiring pattern 35B are formed. The pad 47 is connected to one end of the antenna coil 45. The pad 33 is connected to the other end of the antenna coil 45. The pad 34 is connected to the conductor pattern 34B via a wiring pattern 35B. The antenna coil 45 is composed of a line pattern 46 circling along the periphery of the insulating base material 39, and the outermost line pattern 46 </ b> Z is connected to the pad 47. The conductor pattern 34B is formed on the inner peripheral side of the antenna coil 45.

The antenna sheet 30 has antenna coils formed on both sides, and has a multilayer antenna structure. The multi-layer antenna can be formed, for example, by stacking a plurality of antenna sheets formed by etching and bonding them by pressing with an adhesive as necessary, or by using a roll laminator or the like.

The pad 33 faces the pad 32 with the insulating base material 39 interposed therebetween. The pads 32 and 33 are connected to each other by a through hole 32H. The conductor pattern 34B is connected to the conductor pattern 34A via the insulating base 39.
A capacitor is formed opposite to the capacitor.

The pad 37 faces the pad 47 with the insulating base material 39 interposed therebetween. Caulking 3 on pads 37 and 47
7A and 37B are formed, and caulking 37A and 37B are formed.
Are connected to each other. Thus, the antenna coils 35 and 45 are connected in series between the pads 31 and 32. In addition, the antenna coils 35 and 45 connected in series and the capacitor composed of the conductor patterns 34A and 34B constitute a resonance circuit. FIG. 10 is a schematic perspective view in which the pads 37 and 47 of the antenna sheet 30 and the periphery thereof are enlarged.

The pads 37 and 47 are caulked 37A and 47
The caulking 37A and 47A are formed at positions where they are connected by A and the inductance between the pads 31 and 32 becomes a preset value. Pads 31, 32
The caulking 37A, 47A may be formed at a position where the resonance frequency due to the inductance between the capacitor and the capacitance of the capacitor becomes a preset target frequency. In FIGS. 8 to 10, two caulks are provided for the pads 37 and 47, but a single caulking may be provided to connect the pads 37 and 47.

In the antenna sheet 30, the pads 37, 4
7, the characteristics of the antenna coil from the pad 31 to the pad 32 can be changed, the inductance, the capacitance and the electric resistance can be changed, and the inductance can be adjusted. The accuracy of tuning can be improved, and the resonance frequency can be brought close to or matched with the target frequency.

[0071] Non-contact data carrier 130 FIG. 11, the third non-contact data carrier according to the present invention
It is a schematic structure figure showing an embodiment. This non-contact data carrier 130 has a configuration in which a member made of an IC chip 38 is mounted on the antenna sheet 30 shown in FIGS. 8 and 9, and the IC chip 38 is connected to the pads 31 and 32. FIG. 11 shows a non-contact data carrier 130.
FIG. 10 is a schematic explanatory view showing one surface, and the configuration of the other surface is the same as the structure shown in the explanatory diagram of FIG. 9. Note that I
The C chip 38 is shown by a rectangular frame in the figure so that the state of the pads 31 and 32 can be understood.

A terminal pair including one electrode terminal and the other electrode terminal is formed on the circuit forming surface of the IC chip 38. One electrode terminal corresponds to one pad 31 and the other electrode terminal corresponds to one pad. It corresponds to the other pad 32. IC
The terminal pair of the chip 38 is connected to the pads 31 and 3 via bumps.
2 and the IC chip 38 is flip-chip mounted.

In the non-contact data carrier 130,
Antenna coil 35, pad 37, wiring pattern 3
5A and the conductor pattern 34A may be covered with an insulating film (insulating layer) made of an insulating resist material to expose the pads 31 and 32 and connect the IC chip 38 thereto. Only the connection portion with the IC chip 38 may be exposed, and the other portion may be covered with an insulating film.

The pads 31, 32, 37, the antenna coil 35, the IC chip 38, the conductor pattern 34A, the wiring pattern 35
A insulating layer (not shown) is formed so as to cover A. In addition, the conductor pattern 34B, the wiring pattern 35B, and the pad 3
An insulative protective layer (not shown) is formed so as to cover the antenna coils 45. Then, it is affixed to a product packaging box or the product itself, and is used for, for example, a tag or a label.

[0075]

As described above, according to the present invention, it is possible to provide a non-contact data carrier capable of adjusting the inductance of an antenna coil and an antenna sheet usable for the non-contact data carrier. Can be.
Further, according to the present invention, an antenna coil and a capacitor are formed, a non-contact data carrier capable of adjusting the inductance of the antenna coil and / or the capacitance of the capacitor, and a non-contact data carrier usable for the non-contact data carrier. And an antenna sheet.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of an antenna sheet according to the present invention.

FIG. 2 is a schematic sectional view of the antenna sheet of FIG.

FIG. 3 is a schematic configuration diagram showing a first embodiment of a contactless data carrier according to the present invention.

FIG. 4 is a schematic configuration diagram showing a second embodiment of the antenna sheet according to the present invention.

FIG. 5 is a schematic partial enlarged view in which the vicinity of both ends of an antenna coil in the antenna sheet of FIG. 4 is enlarged.

FIG. 6 is a schematic configuration diagram showing a contactless data carrier according to a second embodiment of the present invention.

FIG. 7 is a schematic partial enlarged view of the vicinity of both ends of an antenna coil in the non-contact data carrier of FIG. 6;

FIG. 8 is a schematic configuration diagram showing a third embodiment of the antenna sheet according to the present invention, and is a schematic explanatory diagram showing one surface of the antenna sheet.

FIG. 9 is a schematic configuration diagram illustrating a third embodiment of the antenna sheet according to the present invention, and is a schematic explanatory diagram illustrating the other surface of the antenna sheet.

FIG. 10 is a schematic perspective view in which pads 37 and 47 of the antenna sheet 30 shown in FIGS. 8 and 9 and the periphery thereof are enlarged.

FIG. 11 shows a third example of the non-contact data carrier according to the present invention.
FIG. 2 is a schematic configuration diagram illustrating an embodiment of the present invention, and is a schematic explanatory diagram illustrating one surface of the non-contact data carrier.

[Explanation of symbols]

1A to 4A, 1B to 4B, 34A, 34B ... conductor pattern, 3C ... hole, 5, 25, 35, 45 ... antenna coil, 6, 26, 36, 46 ... line pattern, 8, 28, 3
8: IC chip (member), 9, 29, 39: insulating base material,
10, 20, 30 ... antenna sheet, 11, 12, 3
1, 32, 33, 37, 47 ... pads, 13, 14, 3
2H: Through hole, 15: Capacitor, 15A, 15
B, 35A, 35B ... wiring pattern, 21A, 21B,
23A, 23B ... mark, 22A, 22B ... terminal, 26
A to 26C: line pattern, 26I: innermost line pattern, 36Z, 46Z: outermost line pattern, 37A, 3
7B: caulking, 39A: one surface of insulating base 39, 39
B: The other surface of the insulating base material 39, 110, 120, 130
... non-contact data carrier.

Claims (22)

[Claims] 1. An antenna sheet comprising: an insulating base; an antenna coil formed on a surface of the insulating base; and a capacitor connected to the antenna coil. M (M is an integer of 2 or more) one electrode plates formed on one surface; and the M one electrodes formed on the other surface of the insulating base via the insulating base. An antenna sheet, comprising: a plate and the other electrode plate facing the plate, wherein the M one electrode plates are connected to each other. 2. The antenna sheet according to claim 1, wherein a hole for shaving any one of said M electrode plates is formed. 3. The other electrode plate has M other electrode plates connected to each other, and the M other electrode plates correspond to the M one electrode plate. 3. The antenna sheet according to claim 2, wherein the hole penetrates the insulating base material and is smaller than the electrode plate in which the hole is formed among the M electrode plates. 4. 4. The capacitor and the antenna coil form a resonance circuit, and the hole has a size such that a resonance frequency of the capacitor and the antenna coil becomes a preset frequency. Or the antenna sheet according to 3. 5. A non-contact type comprising: an insulating base; an antenna coil formed on a surface of the insulating base; a capacitor connected to the antenna coil; and members connected to both ends of the antenna coil. A data carrier, wherein the capacitor is formed on one of M electrode plates (M is an integer of 2 or more) formed on one surface of the insulating base material, and on the other surface of the insulating base material. And the other one of the M electrode plates facing the M one electrode plate via the insulating base material, wherein the M one electrode plate is a non-contact data in which the electrode plates are connected to each other. Career. 6. The non-contact type data carrier according to claim 5, wherein a hole for cutting any one of the M electrode plates is formed. 7. The other electrode plate has M other electrode plates connected to each other, and the M other electrode plates are corresponding to the M one electrode plate. The non-contact data carrier according to claim 6, wherein the hole penetrates the insulating base material and is smaller than the electrode plate in which the hole is formed among the M electrode plates. 8. The capacitor and the antenna coil form a resonance circuit, and the hole has a size such that a resonance frequency of the capacitor and the antenna coil becomes a preset frequency. Or a non-contact data carrier according to 7. 9. The member has an IC chip, a capacitor or a conductive member provided with a terminal pair consisting of one electrode terminal and the other electrode terminal, and the one electrode terminal is provided at one end of the antenna coil. The non-contact data carrier according to any one of claims 5 to 8, wherein the other electrode terminal is connected to the other end of the antenna coil. 10. An insulative base material, and an antenna coil formed of a circling line pattern formed on the surface of the insulative base material, wherein the innermost peripheral line pattern includes the innermost peripheral line pattern. An antenna sheet to which a single or a plurality of line patterns that divide an area surrounded by the line pattern is connected. 11. The single line pattern is cut or one of the plurality of line patterns is cut so that the inductance between both ends of the antenna coil has a predetermined value. The described antenna sheet. 12. An antenna base comprising: an insulating base; an antenna coil formed of a circling line pattern formed on a surface of the insulating base; and members connected to both ends of the antenna coil. A non-contact data carrier in which a single or a plurality of line patterns for dividing an area surrounded by the innermost line pattern are connected to the inner line pattern. 13. The antenna according to claim 1, wherein the member includes an IC chip, a capacitor, or a conductive member having a terminal pair including one electrode terminal and the other electrode terminal, and the one electrode terminal is connected to one end of the antenna coil. The non-contact data carrier according to claim 12, wherein the other electrode terminal is connected to the other end of the antenna coil. 14. The member has a capacitor, and the capacitor and the antenna coil constitute a resonance circuit. The unit is configured so that a resonance frequency of the capacitor and the antenna coil becomes a preset frequency. 14. The non-contact data carrier according to claim 12, wherein one line pattern is cut or the plurality of line patterns are cut. 15. The single line pattern or one of the plurality of line patterns is cut so that an inductance between both ends of the antenna coil has a predetermined value. Or a non-contact data carrier according to item 13. 16. An insulating base material, a first antenna coil and a first pad formed on one surface of the insulating base material, and a second antenna formed on the other surface of the insulating base material. A coil and a second pad, wherein the first pad is connected to one end of the first antenna coil, and the second pad is connected to one end of the second antenna coil The first and second pads are connected to each other by caulking, and the inductance from the other end of the first antenna coil to the other end of the second antenna coil has a predetermined value. An antenna sheet in which the caulking is formed at such a position. 17. An insulating base material, a first antenna coil and a first pad formed on one surface of the insulating base material, and a second antenna formed on the other surface of the insulating base material. A coil and a second pad; and a capacitor connected to the other ends of the first and second antenna coils, wherein the first pad is connected to one end of the first antenna coil. The second pad is connected to one end of the second antenna coil, the first and second pads are connected to each other by caulking, and the first and second antenna coils; The capacitor forms a resonance circuit, and has a resonance frequency based on an inductance from the other end of the first antenna coil to the other end of the second antenna coil and a capacitance of the capacitor. Antenna sheet but which is in a position such that the predetermined frequency, the crimping form. 18. The capacitor is formed on one surface of the insulating base, one electrode plate connected to the other end of the first antenna coil, and formed on the other surface of the insulating base. 18. The antenna sheet according to claim 17, further comprising: the one electrode plate connected to the other end of the second antenna coil and the other electrode plate facing the other electrode plate. 19. An insulating base material, a first antenna coil and a first pad formed on one surface of the insulating base material, and a second antenna formed on the other surface of the insulating base material. A coil and a second pad; and an IC chip connected to the other ends of the first and second antenna coils, wherein the first pad is connected to one end of the first antenna coil. The second pad is connected to one end of the second antenna coil; the first and second pads are connected to each other by caulking; and the other end of the first antenna coil A non-contact data carrier, wherein the caulking is formed at a position such that an inductance from the second antenna coil to the other end of the second antenna coil has a predetermined value. 20. An insulating base, a first antenna coil formed on one surface of the insulating base, and one end of the first antenna coil formed on one surface of the insulating base. A first pad connected thereto, a second antenna coil formed on the other surface of the insulating base material, and a second pad formed on the other surface of the insulating base material and connected to one end of the second antenna coil And a second pad opposed to the first pad, and a capacitor and an IC chip connected to the other ends of the first and second antenna coils, wherein the first and second pads are The first and second antenna coils and the capacitor constitute a resonance circuit, and are connected from the other end of the first antenna coil to the other end of the second antenna coil. For up to In a position such that the resonance frequency due to the capacitance of the capacitor and inductance is preset frequency, non-contact data carrier the caulking is formed. 21. A capacitor formed on one surface of the insulating base material, one electrode plate connected to the other end of the first antenna coil, and another capacitor formed on the other surface of the insulating base material. 21. The non-contact data carrier according to claim 20, further comprising: the one electrode plate connected to the other end of the second antenna coil and the other electrode plate facing the other electrode plate. 22. The IC chip has a terminal pair comprising one electrode terminal and the other electrode terminal, wherein the one electrode terminal is connected to the other end of the first antenna coil; The non-contact data carrier according to any one of claims 19 to 21, wherein the other electrode terminal is connected to the other end of the second antenna coil.