JP2016162136A - Ic recording medium, antenna sheet, and inlet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC recording medium having a stable communication state with a reader/writer.SOLUTION: An IC recording medium comprises an inlet 10 including: an antenna sheet 10a including a substrate 11 and a coil pattern which is arranged on the substrate 11 and the number of turns of which is three; and a Felica (R) Lite-SIC chip 20 which is connected with the antenna sheet 10a and performs non-contact communication. There is no communication impossible region between the IC recording medium and a reader/writer as long as distance from the reader/writer is within a range of 0-5 mm and a communication frequency with the reader/writer is within a range of 14.4-16 MHz.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an IC recording medium, an antenna sheet, and an inlet.

  In recent years, an IC recording medium such as an electronic card (IC card) that performs non-contact communication to read and write information has been widely used. IC cards are actively used in various fields such as transportation systems, payment systems, entrance / exit management systems, and the types of IC cards are also increasing. For this reason, there are an increasing number of situations in which a user carries a plurality of types of IC cards and uses the IC cards properly according to the purpose.

  The IC card includes a base material, an antenna having a coil pattern arranged on the base material, an IC chip that performs non-contact communication using the antenna, and an inlet having a capacitor for adjusting a communication frequency. .

  The communication frequency coincides with the resonance frequency of the circuit determined based on a value obtained by multiplying the inductance value L by the coil pattern, the capacitance value C1 of the capacitor, and the capacitance value C obtained by summing the internal capacitance C2 of the IC chip. The capacitance value C1 of the capacitor is adjusted in the manufacturing process, and the resonance frequency of the circuit adjusts the communication frequency to optimize the communication performance.

  The IC card performs non-contact communication with the reader / writer, and information stored in the IC card is read or written. For example, when the IC card is a transportation system, the reader / writer is arranged at a ticket gate at a station and performs contactless communication with the IC card, thereby performing opening / closing control of the ticket gate.

  Non-contact communication between the IC card and the reader light is required to be established stably within a predetermined distance range.

  When stable non-contact communication cannot be performed when the distance between the IC card and the reader / writer is within a predetermined range, this predetermined distance range is called a non-communication area (NULL area).

  The cause of the incommunicable area is, for example, that the IC chip cannot operate because the power generated by the coil pattern is not sufficient, or the IC chip protection function is due to excessive power generated by the coil pattern. For example, the power can be cut off.

  Therefore, in order to suppress the occurrence of an incommunicable region, it has been proposed to adjust the shape or width of the coil pattern, to laminate the magnetic layer on the base material, or to use a plurality of coils and antennas. .

JP 2008-219614 A JP 2012-161062 A

  When a plurality of IC cards are stacked, the coil pattern of the IC card is inductively coupled to lower the resonance frequency, which may affect non-contact communication between the reader / writer and the IC card.

  Therefore, an IC card equipped with a conventional Felica (registered trademark) IC chip has a resonance frequency of an IC card in preparation for a decrease in resonance frequency due to inductive coupling of a coil pattern in a use state in which a plurality of IC cards are stacked. The oscillation frequency of the reader / writer (for example, 13.56 MHz) was set higher (for example, 17 MHz).

  When a plurality of IC cards mounted with Felica (registered trademark) IC chips are stacked, the resonance frequency of the IC cards is reduced from, for example, 17 MHz to 15 MHz due to inductive coupling, and non-contact communication with the reader / writer can be performed. It was made like that.

  On the other hand, when the resonance frequency of the IC card is set to the oscillation frequency of the reader / writer, when a plurality of IC cards are used in an overlapping manner, the resonance frequency of the IC card decreases from 13.56 MHz to 8 to 9 MHz, for example. As a result, non-contact communication with the reader / writer becomes impossible.

  By the way, an IC card equipped with a Felica (registered trademark) Lite-S IC chip has been proposed as a kind of Felica (registered trademark) IC chip.

  The resonance frequency of the IC card on which the proposed Felica (registered trademark) Lite-S IC chip is mounted is 13.4 ± 0.5 MHz, which is set to a value close to the oscillation frequency of the reader / writer.

  Therefore, when an IC card on which Felica (registered trademark) Lite-S IC chip is mounted is used while being overlapped with another IC card, there is a possibility that non-contact communication with the reader / writer cannot be performed.

  In order to allow an IC card mounted with Felica (registered trademark) Lite-S IC chip to be used on top of another IC card and perform non-contact communication with a reader / writer, the resonance frequency of the IC card is used. Is required to be 14 MHz or more.

  In addition, when an IC card mounted with Felica (registered trademark) Lite-S IC chip is used in a state of being inserted into a metal casing (for example, a ticket vending machine) mounted with a reader / writer, The resonance frequency of the IC card may change due to the influence of the housing. In order not to be affected by the resonance frequency of the IC card due to the metal casing, the upper limit value of the resonance frequency of the IC card is required to be 16 MHz or less.

  Furthermore, even when the IC card is arranged close to the reader / writer such that the distance between the IC card and the reader / writer is in the range of 0 to 5 mm, a stable communication state with the reader / writer can be established. Desired.

  It is an object of the present specification to provide an IC recording medium equipped with a Felica (registered trademark) Lite-S IC chip that can solve the above-described problems.

  Further, it is an object of the present specification to provide an antenna sheet for mounting a Felica (registered trademark) Lite-S IC chip that can solve the above-described problems.

  Furthermore, this specification makes it a subject to provide the inlet which can solve the subject mentioned above.

  According to the IC recording medium disclosed in this specification, an antenna sheet including a base material, a coil pattern disposed on the base material and having a number of wrinkles of 3, and non-contact communication connected to the antenna sheet And an inlet having a Felica (registered trademark) Lite-S IC chip, the distance to the reader / writer is in the range of 0 to 5 mm, and the communication frequency with the reader / writer is 14.4 MHz to In the 16 MHz range, there is no communication disabled area with the reader / writer.

  Moreover, according to the antenna sheet disclosed in the present specification, it is an antenna sheet for mounting a Felica (registered trademark) Lite-S IC chip that performs non-contact communication using an antenna. The above-mentioned antenna having a coil pattern which is arranged on a base material and has a coil pattern of 3 times, and the distance between the reader / writer is mounted in a state where the Felica (registered trademark) Lite-S IC chip is mounted. In the range of 0 to 5 mm, and the communication frequency with the reader / writer is in the range of 14.4 MHz to 16 MHz, there is no communication disabled area with the reader / writer.

  Furthermore, according to the inlet disclosed in this specification, the antenna sheet described above and a Felica (registered trademark) Lite-S IC chip that performs non-contact communication connected to the antenna sheet are provided.

  According to the above-described IC recording medium disclosed in the present specification, the distance between the reader / writer is 0 to 5 mm and the communication frequency with the reader / writer is 14.4 MHz to 16 MHz. There is no communication disabled area with the writer.

  Moreover, according to the antenna sheet disclosed in the present specification described above, the distance between the reader / writer and the reader / writer is 0 to 5 mm in a state where the Felica (registered trademark) Lite-S IC chip is mounted. When the communication frequency with the writer is in the range of 14.4 MHz to 16 MHz, there is no communication disabled area with the reader / writer.

  Furthermore, according to the inlet disclosed in the present specification described above, the distance between the reader / writer is 0 to 5 mm and the communication frequency with the reader / writer is 14.4 MHz to 16 MHz. There is no communication disabled area with the writer.

It is a figure showing one embodiment of an inlet indicated to this specification. It is a figure explaining an Example and a comparative example. It is a figure explaining the measurement result of Example 1. FIG. It is a figure explaining the measurement result of the comparative example 1. FIG. It is a figure explaining the measurement result of comparative example 2. It is a figure explaining the measurement result of the comparative example 3. It is a figure explaining the measurement result of the comparative example 4. It is a figure explaining the measurement result of Example 2. FIG. It is a figure explaining the measurement result of Example 3. It is a figure explaining the measurement result of Example 4. It is a figure explaining the measurement result of Example 5. FIG.

  Hereinafter, a preferred embodiment of the inlet disclosed in the present specification will be described with reference to the drawings. However, the technical scope of the present invention is not limited to these embodiments, but extends to the invention described in the claims and equivalents thereof.

  FIG. 1 is a diagram illustrating an embodiment of an inlet disclosed in the present specification.

  The inlet 10 can form an electronic card (IC card) that performs contactless communication with a reader / writer (not shown) to read and write information.

  The inlet 10 according to the present embodiment includes a base material 11 that is a dielectric, an antenna sheet 10 a that includes the antenna 12 that is disposed on the base material 11 and has a coil pattern with a number of wrinkles of 3, and a non-contact using the antenna 12. Felica (Registered Trademark) Lite-S IC chip 20 that performs type communication. An IC recording medium such as an IC card can be prepared by laminating thermoplastic resin sheets such as low crystalline polyethylene terephthalate (PET-G) resin on the front and back of the inlet and bonding them by hot pressing. . Examples of the IC recording medium include an IC card conforming to JIS X 6301, an IC tag, a label, and the like.

  The substrate 11 has a first surface (front surface) 11a and a second surface (back surface) 11b.

  In FIG. 1, a solid line indicates a pattern shape on the first surface 11a of the substrate 11, and a chain line indicates a pattern shape on the second surface 11b. In addition, the conductor layers 12a and 12b and the wiring pattern that form the coil pattern of the antenna 12 are shown as a single line, and only the electrode has a width. Further, the IC chip 20 is also indicated by a chain line.

  The antenna 12 has a coil pattern in which the number of wrinkles formed on the first surface 11a of the substrate 11 is 3 along the outer shape. The coil pattern is formed by the conductor layers 12a and 12b. The antenna 12 has a rectangular outline as a whole.

  The conductor layer 12 a extends while winding along the outer shape of the base material 11, and forms a coil pattern in which the number of windings is three. The conductor layer 12b and the conductor layer 12a are not directly connected, but two conductor layers are arranged to form an inner coil pattern.

  One end of the conductor layer 12 a is connected to an electrode terminal 14 a that is connected to the IC chip 20. The other end of the conductor layer 12a is connected to a conduction portion 13b that conducts the first surface 11a and the second surface 11b.

  One end of the conductor layer 12b is connected to a conducting portion 13a that conducts the first surface 11a and the second surface 11b, and the other end of the conductor layer 12b is connected to an electrode terminal 14b that is connected to the IC chip 20. The conductive portion 13a and the conductive portion 13b are connected by the wiring 19 on the second surface 11b.

  The electrode terminal 14a is connected to the first surface electrode 15 and the second surface electrode 16 on the first surface 11a.

  On the 2nd surface 11b, the 1st back surface electrode 17 which opposes the 1st surface electrode 15 via the base material 11, and the 2nd back surface electrode 18 which opposes the 2nd surface electrode 16 via the base material 11 are arrange | positioned. Is done. The 1st back electrode 17 and the 2nd back electrode 18 are connected with the conduction | electrical_connection part 13a on the 2nd surface 11b.

  The first front electrode 15 and the first back electrode 17 form a capacitor with the base material 11 interposed therebetween. Similarly, the 2nd surface electrode 16 and the 2nd back electrode 18 form a capacitor on both sides of substrate 11. These capacitor and antenna 12 are electrically connected in parallel to the electrode terminal 14a and the electrode terminal 14b.

  The first surface electrode 15 has a shape in which a plurality of rectangular small electrodes facing the first back electrode 17 are discretely connected, and each of the plurality of small electrodes facing the first back electrode 17 has a small amount of capacitor. Form.

  Similarly, the second front surface electrode 16 has a shape in which a plurality of rectangular middle electrodes facing the second back surface electrode 18 are discretely connected, and each of the plurality of middle electrodes facing the second back surface electrode 18 is a capacitor. Form. The area of the rectangular middle electrode forming the second surface electrode 16 is larger than the area of the rectangular small electrode forming the first surface electrode 15.

  At the time of manufacturing the inlet 10, among the plurality of small capacitors formed by the first surface electrode 15 or the plurality of capacitors formed by the second surface electrode 16, the number of capacitors left by drilling in the portion to be removed is changed. The capacitance value is adjusted. In this way, the resonance frequency is appropriately adjusted by adjusting the capacitance values of the capacitors connected to both ends of the antenna 12.

  The IC chip 20 is connected to the electrode terminals 14 a and 14 b and is disposed on the base material 11.

  In this specification, the number of turns of the coil pattern included in the antenna 12 is 3, which means that the antenna 12 includes three portions of the conductor layers 12a and 12b that form the coil pattern, and 4 It means that it does not include a portion of two or more conductor layers arranged side by side.

  Since the antenna 12 of the inlet 10 has a coil pattern in which the number of beats is 3, the distance to the reader / writer is in the range of 0 to 5 mm, and the communication frequency with the reader / writer is 14.4 MHz to 16 MHz. In this range, no communication disabled area (NULL area) is generated between the reader / writer.

  The distance between adjacent portions of the conductor layers 12a and 12b forming the coil pattern is in the range of 0.3 mm to 0.7 mm, particularly in the range of 0.3 mm to 0.5 mm. From the viewpoint of obtaining a good communication state.

  Moreover, it is preferable from the same viewpoint that the width | variety of the conductor layers 12a and 12b which form a coil pattern exists in the range of 0.5 mm-0.7 mm.

  Furthermore, it is preferable from the same viewpoint that the thicknesses of the conductor layers 12a and 12b forming the coil pattern are 10 μm to 50 μm, particularly 30 μm.

  The conductor layers 12a and 12b forming the coil pattern may have the same width or thickness, but may be different.

  According to the IC card having the inlet of this embodiment described above, the distance between the IC card and the reader / writer is in the range of 0 to 5 mm, and the communication frequency with the reader / writer is in the range of 14.4 MHz to 16 MHz. In this case, since there is no communication impossible area (NULL area) with the reader / writer, a stable communication state with the reader / writer is ensured even when the IC card is overlapped with another IC card. Further, even when the IC card is used in a state where it is inserted into a metal casing (for example, a ticket vending machine) on which the reader / writer is mounted, a stable communication state with the reader / writer is ensured. Furthermore, when the distance between the IC card and the reader / writer is in the range of 0 to 5 mm, a stable communication state with the reader / writer is ensured even when the IC card is arranged close to the reader / writer.

  Hereinafter, the IC card disclosed in this specification will be further described with reference to examples. However, the scope of the present invention is not limited to such examples.

Example 1
The IC card of Example 1 was manufactured as described below. As the substrate, PET having a thickness of 38 μm was used. On the first surface, aluminum was used to form a conductor layer, electrodes, and wirings with a thickness of 30 μm. On the second surface, electrodes and wirings were formed using aluminum with a thickness of 10 μm. The number of wrinkles of the coil pattern was 3. The antenna had a long side of 71 mm and a short side of 45 mm. The width of each conductor layer forming the coil pattern was 0.50 mm, and the distance between adjacent portions of the conductor layer in the coil pattern was 0.30 mm. A Felica (registered trademark) Lite-S IC chip was mounted on the antenna sheet formed as described above to create an inlet. The card base material which consists of PET-G was laminated | stacked on the front and back of the created inlet, and it hot-pressed, and obtained the IC card of Example 1 used as thickness 760 micrometers. In Example 1, an IC card having a resonance frequency f of 14 levels with a frequency ranging from 13.00 to 16.00 MHz was prepared by changing the capacitance of the capacitor.

(Comparative Example 1)
An IC card of Comparative Example 1 was obtained in the same manner as in Example 1 except that the number of turns of the coil pattern was 2. In Comparative Example 1, an IC card having a resonance frequency f of 13 levels with a frequency ranging from 13.48 to 15.82 MHz was prepared by changing the capacitance of the capacitor.

(Comparative Example 2)
An IC card of Comparative Example 2 was obtained in the same manner as in Example 1 except that the number of turns of the coil pattern was 4. In Comparative Example 2, an IC card having an eleventh resonance frequency f with a frequency ranging from 11.64 to 16.14 MHz was prepared by changing the capacitance of the capacitor.

(Comparative Example 3)
An IC card of Comparative Example 3 was obtained in the same manner as in Example 1 except that the number of turns of the coil pattern was 5. In Comparative Example 3, an IC card having eleven levels of resonance frequency f in the range of 11.12 to 16.12 MHz was prepared by changing the capacitance of the capacitor.

(Comparative Example 4)
An IC card of Comparative Example 4 was obtained in the same manner as in Example 1 except that the number of turns of the coil pattern was 6. In Comparative Example 4, an IC card having 9 levels of resonance frequency f in the frequency range of 12.52 to 15.70 MHz was prepared by changing the capacitance of the capacitor.

  The communication state between the IC card of Embodiment 1 and Comparative Examples 1 to 4 described above and the reader / writer was measured. RC-S464B manufactured by Sony Corporation (antenna dimensions: 42.5 mm × 22.5 mm) was used as a reader / writer. The communication state was examined while changing the distance between the IC card and the reader / writer, and the maximum communication distance D and the incommunicable area (NULL area) where no error occurred were measured. Here, a predetermined distance range in which the IC card cannot make a 100% response to the inquiry command from the reader / writer is referred to as a non-communication area (NULL area). This description is applied also to the measurement of Examples 2-5 mentioned later.

  The measurement result of Example 1 is shown in FIG. FIG. 3 shows the range of the distance when the resonance frequency f of the IC card, the maximum communication distance D at the resonance frequency, and a non-communication area (NULL area) exist at the resonance frequency. This description also applies to comparative examples and other examples described later.

  In the first embodiment, at the resonance frequencies of 13.98 MHz and 14.24 MHz of the IC card, there is an incommunicable region (NULL region) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm. When the communication frequency with the reader / writer is in the range of 14.38 MHz to 16.00 MHz, the communication disabled area (NULL) between the IC card and the reader / writer is in the range of 0 to 5 mm. Does not exist.

(Comparative Example 1)
The measurement result of Comparative Example 1 is shown in FIG. In the first comparative example, at the resonance frequencies of the IC card of 13.78 MHz, 15.60 MHz, and 15.82 MHz, the incommunicable area (NULL area area) is within a range in which the distance between the IC card and the reader / writer includes 0 to 5 mm. Exists.

(Comparative Example 2)
The measurement results of Comparative Example 2 are shown in FIG. In Comparative Example 2, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm at the resonance frequency of 14.54 MHz of the IC card.

(Comparative Example 3)
The measurement result of Comparative Example 3 is shown in FIG. In the comparative example 3, at the resonance frequencies of 14.90 MHz and 15.34 MHz of the IC card, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm.

(Comparative Example 4)
The measurement result of Comparative Example 4 is shown in FIG. In the comparative example 4, at the resonance frequencies of 15.34 MHz and 15.70 MHz of the IC card, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm.

  From the measurement results of Example 1 and Comparative Examples 1 to 4 described above, the distance between the antenna 12 and the reader / writer is in the range of 0 to 5 mm because the antenna 12 has a coil pattern with a number of wrinkles of 3, and the reader It was confirmed that there was no communication disabled area (NULL area) with the reader / writer when the communication frequency with the writer was in the range of 14.4 MHz to 16 MHz. There was a tendency that the communication frequency at which the communication incapable area (NULL area) occurs in the range of 0 to 5 mm from the reader / writer increases with the increase in the number of coil pattern defects.

  Next, in the case where the antenna 12 has an IC card having a coil pattern with a number of wrinkles of 3, the dimensions of the antenna and the distance between the conductor layers are changed with respect to the first embodiment. The IC card of Example 5 was manufactured.

(Example 2)
Regarding the dimensions of the antenna, an IC card of Example 2 was obtained in the same manner as Example 1 except that the long side was set to 80 mm. In Example 2, an IC card having a resonance frequency of 7 levels with a frequency ranging from 13.64 to 16.10 MHz was prepared by changing the capacitance of the capacitor.

(Example 3)
With respect to the dimensions of the antenna, an IC card of Example 3 was obtained in the same manner as Example 1 except that the short side was 62 mm. In Example 3, an IC card having a resonance frequency of 12 levels with a frequency ranging from 13.84 to 15.98 MHz was prepared by changing the capacitance of the capacitor.

Example 4
The IC card of Example 4 is the same as Example 1 except that the short side of the antenna is 62 mm and the interval between adjacent portions of the conductor layer in the coil pattern is 0.50 mm. Obtained. In Example 4, an IC card having a resonance frequency of 10 levels with a frequency ranging from 14.26 to 16.00 MHz was prepared by changing the capacitance of the capacitor.

(Example 5)
An IC card of Example 5 was obtained in the same manner as Example 1 except that the interval between adjacent portions of the conductor layer in the coil pattern was 0.50 mm. In Example 5, an IC card having a resonance frequency of 14 levels with a frequency ranging from 13.38 to 15.98 MHz was prepared by changing the capacitance of the capacitor.

  The measurement result of Example 2 is shown in FIG. In the second embodiment, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 3 to 5 mm at the resonance frequency of 14.04 MHz of the IC card. In the range of the communication frequency between 14.48 MHz and 16.10 MHz, there is an incommunicable area (NULL area) between the reader / writer and the distance between the IC card and the reader / writer in the range of 0 to 5 mm. do not do.

  The measurement results of Example 3 are shown in FIG. In Example 3, at the resonance frequency of 14.02 MHz and 14.20 MHz of the IC card, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm. When the communication frequency with the reader / writer is in the range of 14.44 MHz to 15.98 MHz, the communication disabled area (NULL) is between the reader / writer and the distance between the IC card and the reader / writer is in the range of 0 to 5 mm. Does not exist.

  The measurement result of Example 4 is shown in FIG. In Example 4, at the resonance frequency of the IC card of 14.26 MHz and 14.38 MHz, there is a non-communication area (NULL area area) in a range where the distance between the IC card and the reader / writer includes 0 to 5 mm. When the communication frequency with the reader / writer is in the range of 14.58 MHz to 16.00 MHz, the communication disabled area (NULL) between the IC card and the reader / writer is in the range of 0 to 5 mm. Does not exist.

  The measurement result of Example 5 is shown in FIG. In the fifth embodiment, at the resonance frequencies of the IC card of 13.82 MHz, 14.02 MHz, and 14.22 MHz, the incommunicable area (NULL area area) is within a range including the distance between the IC card and the reader / writer including 0 to 5 mm. Although it exists, when the communication frequency with the reader / writer is in the range of 14.44 MHz to 15.98 MHz, the communication between the IC card and the reader / writer is in the range of 0 to 5 mm. There is no impossible area (NULL area).

  According to the first to fifth embodiments described above, the distance between the reader / writer is in the range of 0 to 5 mm, and the communication frequency with the reader / writer is in the range of 14.4 MHz to 16 MHz. It was confirmed that there is no communication disabled area.

  In the present invention, the IC card and the inlet of the above-described embodiment can be appropriately changed without departing from the gist of the present invention.

  For example, in the above description, the IC chip is mounted on the antenna sheet in the inlet. However, the scope of the present invention extends to the antenna sheet for mounting the Felica (registered trademark) Lite-S IC chip. Is.

DESCRIPTION OF SYMBOLS 10 Inlet 10a Antenna sheet 11 Base material 11a 1st surface 11b 2nd surface 12 Antenna 12a, 12b Conductor layer 13a, 13b Conductive part 14a, 14b Electrode terminal 15 1st surface electrode 16 2nd surface electrode 17 1st back electrode 18 Second back electrode 19 Wiring 20 IC chip

Claims (9)

An antenna sheet including a base material and a coil pattern disposed on the base material and having a number of wrinkles of 3,
Felica (registered trademark) Lite-S IC chip connected to the antenna sheet for non-contact communication;
An inlet having,
With
An IC recording medium having no communication disabled area with the reader / writer when the distance to the reader / writer is in the range of 0 to 5 mm and the communication frequency with the reader / writer is in the range of 14.4 MHz to 16 MHz. .   The IC recording medium according to claim 1, wherein an interval between adjacent portions of the conductor layer forming the coil pattern is in a range of 0.3 mm to 0.7 mm.   The IC recording medium according to claim 1 or 2, wherein a width of the conductor layer forming the coil pattern is 0.5 mm to 0.7 mm.   4. The IC recording medium according to claim 1, wherein a thickness of the conductor layer forming the coil pattern is 10 μm to 50 μm. An antenna sheet for mounting a Felica (registered trademark) Lite-S IC chip that performs non-contact communication using an antenna,
A substrate;
The antenna having a coil pattern disposed on the substrate and having a number of wrinkles of 3,
With
In the state where the Felica (registered trademark) Lite-S IC chip is mounted, the distance to the reader / writer is in the range of 0 to 5 mm, and the communication frequency with the reader / writer is 14.4 MHz to 16 MHz. An antenna sheet that does not have an area where communication with the reader / writer is impossible.   The antenna sheet according to claim 5, wherein an interval between adjacent portions of the conductor layer forming the coil pattern is in a range of 0.3 mm to 0.7 mm.   The antenna sheet according to claim 5 or 6, wherein a width of the conductor layer forming the coil pattern is 0.5 mm to 0.7 mm.   The antenna sheet according to any one of claims 5 to 7, wherein a thickness of a conductor layer forming the coil pattern is 10m to 50m. The antenna sheet according to any one of claims 5 to 8,
Felica (registered trademark) Lite-S IC chip that performs non-contact communication connected to the antenna sheet;
Inlet equipped with.

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