KR101697129B1 - Antenna assembly - Google Patents

Abstract

A WPC pattern is formed on an upper surface or a lower surface of the substrate and is formed on an upper surface or a lower surface of the substrate. And a thermistor for measuring the temperature of the WPC pattern.
According to the present invention, the NFC antenna, the MST antenna, and the WPC antenna are simultaneously formed on one substrate to reduce the overall size of the antenna structure, thereby efficiently utilizing the internal space of the mobile communication terminal, Even if the MST antenna and the WPC antenna are simultaneously formed, the optimal performance of the individual antenna can be obtained without interference between the antennas. In addition, unlike the conventional antenna structure including a plurality of sheets, the thickness of the antenna structure can be drastically reduced by using a single sheet of nano-crystal, and when the antenna structure is built up with a thermistor, It is possible to prevent unnecessary damage.

Description

Antenna structure {ANTENNA ASSEMBLY}

The present invention relates to an antenna structure, and more particularly, to a composite antenna structure in which an NFC pattern, an MST pattern, and a WPC pattern are simultaneously formed on a single substrate.

2. Description of the Related Art [0002] As mobile communication terminals, more specifically, smart phones have become widespread, recent smart phones are equipped with various functions for providing convenience to users. Among them, NFC (Near Frequency Communication) Magnetic Secure Transmission (MST) function and Wireless Power Charge (WPC) function that overcomes the limit of wired charging of mobile communication terminal.

Since the NFC and MST functions are installed in the mobile communication terminal, users no longer need to take out the credit card from the purse for payment. By installing the wireless charging function, even when the mobile communication terminal is being charged, Has become possible. All of these functions are possible by an antenna mounted on a mobile communication terminal.

On the other hand, according to the tendency of a recent mobile communication terminal becoming thinner and smaller, a space for mounting an antenna also becomes smaller, and studies for mounting a plurality of antennas on one substrate have been continued. There are many problems to be solved from the problem of arrangement that can efficiently utilize the space and the problem of minimizing the interference between the antennas when a plurality of antennas are simultaneously mounted on one substrate. In addition, if three or more antennas are to be mounted on one substrate at the same time, the two antennas must necessarily be formed on the same plane, and this problem will be further exacerbated.

Therefore, through the present invention, an NFC antenna, an MST antenna, and a WPC antenna capable of providing NFC and MST functions and a wireless charging function for the user's convenience are formed simultaneously on a single substrate through efficient space utilization, We propose a new and progressive antenna structure that can be derived.

Korean Patent Publication No. 10-2015-0131925 (2015.11.25)

An object of the present invention is to provide an antenna structure capable of simultaneously forming an NFC antenna, an MST antenna, and a WPC antenna on a single substrate through efficient space utilization.

Another object of the present invention is to provide an antenna structure capable of obtaining optimum performance of individual antennas even when an NFC antenna, an MST antenna, and a WPC antenna are simultaneously formed on one substrate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

The antenna structure according to an embodiment of the present invention includes a substrate having a predetermined shape and a shielding sheet stacked on the substrate, wherein the shielding sheet includes a nanocrystal layer. According to the present invention, the NFC antenna, the MST antenna, and the WPC antenna are simultaneously formed on one substrate to reduce the overall size of the antenna structure, thereby efficiently utilizing the internal space of the mobile communication terminal, Even if the MST antenna and the WPC antenna are simultaneously formed, the optimal performance of the individual antenna can be obtained without interference between the antennas. In addition, unlike the conventional antenna structure including a plurality of sheets, the thickness of the antenna structure can be drastically reduced by using a single sheet of nano-crystal, and when the antenna structure is built up with a thermistor, It is possible to prevent unnecessary damage.

In addition, the nanocrystal layer may be formed by stacking first to Nth (N is a positive integer) nano-ribbon through an adhesive.

In addition, a buffer is formed on the lower surface of the substrate to prevent scratches generated by contact with the glass of the terminal on which the antenna structure is mounted.

Further, it may further include an attractor stacked between the substrate and the shielding sheet.

At least one of an NFC pattern, an MST pattern, and a WPC pattern may be formed on an upper surface or a lower surface of the substrate, and the attractor may be laminated on a portion of the substrate where no pattern is formed.

In addition, an NFC pattern, an MST pattern, and a WPC pattern may be formed on the upper surface or the lower surface of the substrate.

In addition, the NFC pattern, the MST pattern, and the WPC pattern are formed in order from the outer side of the substrate to the inner side, and the auxiliary NFC pattern extending from the NFC pattern may be formed inside the WPC pattern.

The lateral length of the MST pattern may be less than or equal to the diameter of the WPC pattern.

In addition, the longitudinal length of the MST pattern may be equal to or larger than the diameter of the WPC pattern.

The end portion of the MST pattern may further include a bent portion bent in a predetermined direction along the shape of the WPC pattern.

In addition, the substrate may include an extended portion having a predetermined shape formed on one side, and the MST pattern may be extended to the extended portion.

In addition, terminals of the NFC pattern, the MST pattern, and the WPC pattern may be exposed and formed on the extended portion.

The graphite sheet may further include a graphite sheet laminated on the upper surface of the shielding sheet.

According to the present invention, the NFC antenna, the MST antenna, and the WPC antenna are simultaneously formed on one substrate to reduce the overall size of the antenna structure, thereby effectively utilizing the internal space of the mobile communication terminal.

In addition, even when an NFC antenna, an MST antenna, and a WPC antenna are simultaneously formed on a single substrate, an optimal performance of an individual antenna can be obtained without interference between the antennas.

In addition, unlike the conventional antenna structure including a plurality of sheets, the thickness of the antenna structure can be drastically reduced by using a single nano-crystal sheet.

In addition, when the antenna structure is built up with a thermistor, the wireless charging function is cut off when the temperature of the antenna structure rises above a predetermined temperature, thereby preventing unnecessary damage.

The effects of the present invention are not limited to the above-mentioned effects, and various effects can be included within the range that is obvious to a person skilled in the art from the following description.

1 is a cross-sectional view of an antenna structure according to an embodiment of the present invention.
2 is a cross-sectional view of a nanocrystal layer.
3 is a cross-sectional view of an antenna structure to which an attractor is added.
4 is a view showing a specific stacking position of the attractor.
5 is a view showing an antenna pattern formed on an upper surface of a substrate.
6 is a view showing an antenna pattern formed on a bottom surface of a substrate.
7 is a view showing an NFC pattern formed on the upper surface of the substrate.
8 is a view showing an NFC pattern formed on a bottom surface of a substrate.
9 is a view showing an MST pattern formed on the upper surface of the substrate.
10 is a view showing an MST pattern formed on a bottom surface of a substrate.
11 is a view showing an MST pattern and a WPC pattern formed on the upper surface of a substrate.
12 is a view showing a WPC pattern formed on the upper surface of the substrate.
13 is a view showing a WPC pattern formed on the bottom surface of the substrate.
14 is a diagram showing terminals formed in an extension of a substrate.
15 is a view showing a thermistor formed on a substrate.
16 is a cross-sectional view of an antenna structure to which a graphite sheet is added.
17 is a flowchart illustrating a method of manufacturing an antenna structure according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. The embodiments described above are provided so that those skilled in the art can easily understand the technical spirit of the present invention and thus the present invention is not limited thereto and a detailed description of the related known structure or function may be considered to blur the gist of the present invention Detailed description thereof will be omitted.

In the drawings, the same or similar elements are denoted by the same reference numerals, and the same reference numerals are used throughout the drawings to refer to the same or like elements. It should be noted that the elements have the same reference numerals as much as possible even if they are displayed on different drawings.

In addition, the expression " comprising " is intended to merely denote that such elements exist as an 'open expression', and should not be understood as excluding additional elements.

The NFC pattern, the MST pattern, and the WPC pattern, which will be referred to in the following description, can be widely seen as NFC antennas, MST antennas, and WPC antennas having frequencies of 13.56 MHz, 100 KHz, and 125 KHz, respectively.

1 is a cross-sectional view of an antenna structure 100 according to an embodiment of the present invention.

The antenna structure 100 may include a substrate 10 and a shielding sheet 20 and the shielding sheet 20 may include a nanocrystal layer 25. [ However, it is to be understood that the present invention is not limited thereto and that some configurations may be added or deleted as needed.

The substrate 10 may have a predetermined shape, and the predetermined shape may differ depending on the position of the mobile communication terminal on which the antenna structure 100 is mounted. For example, if the antenna structure 100 is mounted on a battery, the substrate 10 may exhibit the same or similar shape as the shape of the cross-section of the battery, and may have the same or similar shape as the shape of the cross-section of the glass if mounted behind the glass .

Since the antenna pattern to be described later is to be formed on the substrate 10, a general printed circuit board (PCB) can be used, and a flexible printed circuit board (FPCB) May be used. When FPCB is used, it is more preferable in terms of space utilization because it is thinner than PCB.

On the other hand, a buffering agent is formed on the lower surface of the substrate 10 to prevent scratches caused by contact with the battery or glass of the mobile communication terminal in which the antenna structure 100 is mounted. Any known buffer may be used. For example, sponge or paper may be used. Any buffer capable of preventing scratches caused by contact regardless of the name may be used as a buffer .

The shielding sheet 20 may be laminated to the upper surface of the substrate 10 through an adhesive, and the shielding sheet 20 may include a nanocrystal layer 25. Here, the nano-crystal layer 25 can replace a ferrite sheet and an amorphous sheet in a conventional NFC and WPC antenna composite, 100), the effect of thinning the entire thickness can be obtained.

On the other hand, a cover film is laminated on the upper surface of the nanocrystal layer 25 to protect the surface of the nanocrystal layer 25.

To explain the nano-crystal layer 25 in more detail, the nanocrystal layer 25 may have a structure in which first to Nth (where N is a positive integer) nanoribbons are laminated through an adhesive. FIG. 2 is a view showing a state in which five nanoribbons are laminated through an adhesive, the nanoribbons have a thickness of about 20 .mu.m, the adhesive has a thickness of about 5 .mu.m, and the entire nanocrystal layer 25 has a thickness of about 120 .mu.m . On the other hand, the cover film described above can be laminated on the nano ribbon of the uppermost layer to protect the surface of the nanocrystal layer 25. The cover film has a thickness of about 15 mu m.

On the other hand, it is preferable that the nanocrystal layer 25 is made to exhibit a compositional content of 93.4% Fe, 4.86% Si and 1.74% Cu. However, the nanocrystal layer 25 may further include some components as needed, Of course.

3 is a cross-sectional view of an antenna structure 100 according to an embodiment of the present invention, in which an attractor 30 is further added.

The attractor 30 is a structure for preventing communication efficiency (a kind of communication failure) caused by saturation of the magnetic substance and spreading the magnetic field outwardly (a kind of communication failure). In order to smooth the magnetic flow, And it is preferable to be formed of a metal containing an amorphous component.

On the other hand, since the attractor 30 is laminated between the substrate 10 and the shielding sheet 20 through an adhesive and has its own thickness, there is a problem that the thickness of the attractor 30 is increased when it is stacked on the substrate 10 Lt; / RTI > In this case, the problem of increasing the thickness can be solved by laminating the attractor 30 on a portion where antenna patterns to be described later are not formed. Since the attractor 30 is stacked on the portion where the antenna patterns are not formed, the attractor 30 may not be formed to cover the entire substrate 10. In this case, due to the saturation magnetization, It can have an adverse effect. Therefore, it is preferable to form only one portion. Referring to FIG. 4, the specific stacking position of the attractor can be confirmed.

FIG. 5 is a view showing an antenna pattern formed on a top surface of a substrate 10 included in an antenna structure 100 according to an embodiment of the present invention, and FIG. 6 is a view illustrating antenna patterns formed on a bottom surface. It is preferred that the antenna patterns are formed as shown in FIGS. 5 and 6, but this is only one embodiment that enables the antenna structure 100 according to an embodiment of the present invention to yield optimal performance, It goes without saying that the shape and arrangement of the antenna patterns may vary.

At least one of an NFC pattern 12, an MST pattern 14 and a WPC pattern 17 is formed on an upper surface or a lower surface of the substrate 10 and an NFC pattern 12, an MST It is preferable to form both the pattern 14 and the WPC pattern 17 at the same time. Specifically, the NFC pattern 12, the MST pattern 14, and the WPC pattern 17 are formed in order from the outside of the substrate 10 inwardly at a predetermined interval, do.

7 is a view showing the NFC pattern 12 formed on the upper surface of the substrate 10, and FIG. 8 is a view showing the NFC pattern 12 formed on the lower surface.

Referring to FIG. 7, an NFC pattern 12 is formed in a shape in which the NFC pattern 12 is partially bent in a direction transverse to the 6 o'clock direction of the substrate 10 and one end of the NFC pattern 12 is formed in a circular shape at the 9 o'clock direction Referring to FIG. 8, the NFC pattern 12 has a shape in which the NFC pattern 12 is partially bent in the transverse direction at the 12 o'clock direction of the substrate 10, in the transverse direction at the 6 o'clock direction, and at one end thereof, It can be seen that the auxiliary NFC pattern is formed in a circular shape at the 3 o'clock position in the longitudinal direction and at the center. In this case, although the NFC pattern 12 is formed in the longitudinal direction at the 3 o'clock direction on the upper surface of the substrate 10 and the NFC pattern 12 connecting to the central circularity of the lower surface of the substrate 10 is not formed, Since the NFC pattern 12 is formed in the longitudinal direction of the substrate 10 and connected to the central circular shape of the upper surface of the substrate 10, no functional problem occurs, and the thickness at the 3 o'clock direction and the center can be reduced. Here, the auxiliary NFC pattern 12 formed at the center in the shape of a circle is extended to the inside of the WPC pattern 17 to be described later, whereby the performance of the NFC can be remarkably improved.

7 to 8 show the NFC pattern as a turn conductive line (line), but this is only an example for convenience of understanding, and it is needless to say that the NFC pattern may be formed of a plurality of conductive lines . For example, it is possible to form two turns of conductive lines in the transverse direction at 12 o'clock and 6 o'clock, and two turns in the longitudinal direction at 9 o'clock and 3 o'clock. This is for securing the length value of the NFC pattern 12, so that it is possible to secure the full length value regardless of the number of turns formed.

9 is a view showing the MST pattern 14 formed on the upper surface of the substrate 10, and FIG. 10 is a view showing the MST pattern 14 formed on the lower surface.

The MST pattern 14 is spaced apart from the NFC pattern 12 formed on the upper surface and the lower surface of the substrate 10 without being in contact with the substrate 10. When the MST pattern 14 is formed with a number of turns sufficient to secure a length value It is acceptable.

In the case of the MST pattern 14, there is a singular point in the transverse direction and the longitudinal direction. The length in the transverse direction is equal to or smaller than the diameter of the WPC pattern 17 to be described later, and the length in the longitudinal direction is equal to or larger than the diameter of the WPC pattern 17 to be. 11, since the length of the MST pattern 14 in the lateral direction is equal to or less than the diameter of the WPC pattern 17, the bending portion 15 is formed in a part of the longitudinal MST pattern 14 Respectively. This is because if the bending portion 15 is not formed in the longitudinal direction of the MST pattern 14, it overlaps with the WPC pattern 17 and thus the bending portion 15 is formed. Therefore, . In addition, it is also a method of efficiently utilizing the space by arranging the antennas under the constraint of the size of the predetermined substrate 10.

Since the longitudinal length of the MST pattern 14 is equal to or larger than the diameter of the WPC pattern 17, it is not necessary that the bending portion 15 is formed in a part of the lateral MST pattern 14, but this is only one embodiment The length of the MST pattern 14 in the longitudinal direction may also be less than or equal to the diameter of the WPC pattern 17 and in this case the bent portion 15 may be formed in a part of the MST pattern 14 in the transverse direction. That is, any one of the lateral length and the longitudinal length of the MST pattern 14 may be equal to or less than or equal to the diameter of the WPC pattern 17. If the width of the MST pattern 14 is less than or equal to the diameter of the WPC pattern 17, So that overlapping with the WPC pattern 17 can be prevented and a length value can be ensured. For example, when the size of the substrate 10 is small, in order to prevent overlapping with the WPC pattern 17 and ensure the length value of the MST pattern 14, it is necessary to form the bent portions 15 in both the lateral direction and the longitudinal direction something to do.

On the other hand, since the MST pattern 14 is for credit card substitution payment, which is rapidly spreading in recent years, the direction of approaching the mobile communication terminal to the POS device may be different for each user when payment is made through the mobile communication terminal. For example, a certain user may access the POS terminal by horizontally moving the mobile communication terminal, and another user may access the POS terminal by tilting the upper or lower end of the mobile communication terminal. That is, if the settlement is performed only when the mobile communication terminal is accessed in a specific direction, the user will feel inconvenience, and means for solving the problem are needed. This will be described below.

The substrate 10 may include an extension 11 of a predetermined shape on one side. The extension portion 11 shows a portion including the hole at the 12 o'clock position of the substrate 10 in the above-mentioned drawings, but it is not necessarily required to include the hole. The MST pattern 14 can be extended to the extension portion 11 so that even if the user tilts the upper or lower end of the mobile communication terminal to approach the POS terminal, payment can be performed by covering all directions . For example, if the extension unit 11 is disposed on the upper side of the mobile communication terminal, if the user tilts the upper end of the mobile communication terminal and approaches the POS terminal, payment is performed by the MST pattern 14 formed on the extension unit 11 If the extension unit 11 is disposed at the lower end of the mobile communication terminal, if the user tilts the lower end of the mobile communication terminal and approaches the POS terminal, payment is performed by the MST pattern 14 formed in the extension unit 11 will be. On the other hand, when the user tilts the mobile communication terminal to the left or right to access the POS terminal, payment will be performed by the MST pattern 14 formed on the main body of the board 10, so that there is no problem. The MST pattern 14 formed on the extended portion 11 may extend from the MST pattern 14 formed on the main body of the substrate 10 but may be separately formed and may function through coupling.

12 is a view showing the WPC pattern 17 formed on the upper surface of the substrate 10, and Fig. 13 is a view showing the WPC pattern 17 formed on the lower surface.

It is general that the WPC pattern 17 has a circular shape to be wound into the inside, and as the number of turns increases, the efficiency of wireless charging increases. Therefore, it is preferable to have the maximum number of turns under the predetermined size of the substrate 10, and the relationship between the diameter of the WPC pattern 17 and the lateral direction and longitudinal direction of the MST pattern 14 surrounding the WPC pattern 17 has been described above.

On the other hand, the NFC pattern 12 is extended to the inside of the innermost conductive line of the WPC pattern 17, thereby remarkably improving the performance of the NFC.

The NFC pattern 12, the MST pattern 14 and the WPC pattern 17 described so far are connected to the respective terminals 13, 16, 18 (not shown) through the extended portion 11 of the substrate 10, And can be electrically connected to internal parts of the mobile communication terminal. The antenna structure 100 according to an embodiment of the present invention may further include a thermistor 40 capable of measuring a temperature on the substrate 10 through which the temperature of the substrate 10, The temperature of at least one of the NFC pattern 12, the MST pattern 14 and the WPC pattern 17 can be measured. However, the thermistor 40 is not necessarily formed on the upper surface of the pattern. When the temperature of the WPC pattern 17 rises to a predetermined temperature or more, the terminals 43 of the thermistor can be exposed through the extended portion 11 and electrically connected to internal parts of the mobile communication terminal. Function can be blocked. Referring to FIG. 15, the thermistor 40 formed on the upper surface of the substrate 10 can be identified. However, the thermistor 40 may be formed in various manners.

Further, a graphite sheet 50 may be further laminated on the upper surface of the shielding sheet 20. [ As can be seen from FIG. 16, it is obvious that other heat-conductive sheets other than the graphite sheet 50 can be used, which can effectively dissipate heat by the graphite sheet 50 having good thermal conductivity . Here, the graphite sheet 50 is formed on the upper surface of the shielding sheet 20, but the present invention is not limited thereto. The graphite sheet 50 may be formed on the lower surface of the substrate 10.

Meanwhile, the antenna structure 100 according to an embodiment of the present invention can be implemented by a method of fabricating an antenna structure, which is another embodiment including the same technical features. Hereinafter, a description will be made with reference to FIG.

First, an antenna pattern is formed on the upper surface or the lower surface of the substrate 10 (S210). The substrate 10 may be a PCB or an FPCB and the antenna pattern may form one or more of the NFC pattern 12, the MST pattern 14 and the WPC pattern 17, It is preferable to form all of them simultaneously. The pattern formation can be performed by a known method of forming an antenna pattern.

Thereafter, the attractor 30 is laminated on the upper surface of the substrate 10 (S220). Here, the attractor is configured to prevent reduction of communication efficiency (a kind of communication failure) due to saturation of the magnetic substance, spreading of the magnetic field to the outside, and formation of a metal component having a high saturation magnetization value It is preferable that the metal layer is formed of a metal containing an amorphous component. It is preferable to prevent the increase in thickness by laminating the metal layer on the portion where the antenna pattern is not formed in step S210.

After the attractor 30 is laminated, the shielding sheet 20 is then laminated on the upper surface of the attractor 30 (S230). Here, the shielding sheet 20 may include a nanocrystal layer 25, and the nanocrystal layer 50 may reduce the overall thickness of the antenna composite 100.

More specifically, the nanocrystal layer 25 may have a structure in which first to Nth (where N is a positive integer) nanoribbons are laminated via an adhesive, Since it is a laminated structure, either a method of laminating it from top to bottom or a method of laminating it from the bottom to the top may be used.

On the other hand, it is preferable that the nanocrystal layer 25 is made to exhibit a compositional content of 93.4% Fe, 4.86% Si and 1.74% Cu. However, the nanocrystal layer 25 may further include some components as needed, Of course.

Finally, the graphite sheet 50 is laminated on the upper surface of the shielding sheet 20 (S240). It is of course possible to use another sheet having good thermal conductivity other than the graphite sheet 50, which can effectively dissipate heat by the graphite sheet 50 having good thermal conductivity. Here, the graphite sheet 50 may be formed on the lower surface of the substrate 10.

Although not described in detail to avoid redundancy, all the technical features of the antenna structure 100 according to the embodiment of the present invention described above can be applied to all the methods of manufacturing the antenna structure.

Meanwhile, steps S210 through S240 have been described by extracting only representative steps of the antenna structure manufacturing method, and additional steps may be further included between the steps. For example, an adhesive may be applied to the antenna structure (e.g., the adhesive), such as applying an adhesive, attaching a buffer to the underside of the substrate 10, attaching the thermistor 40, attaching the cover film, 0.0 > 100). ≪ / RTI >

The embodiments of the present invention described above are disclosed for the purpose of illustration, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.

[Description of Symbols]

100: Antenna structure

10: substrate

11: Extension

12: NFC pattern 13: NFC pattern terminal

14: MST pattern 15: bent part 16: MST pattern terminal

17: WPC pattern 18: WPC pattern terminal

20: Shielding sheet

25: Nano-crystal layer

30: Attractor

40: thermistor 43: thermistor terminal

50: graphite sheet

Claims (14)

A substrate of a predetermined shape;
A shielding sheet laminated on an upper surface of the substrate;
A WPC pattern formed on an upper surface or a lower surface of the substrate;
An NFC pattern formed on an upper surface or a lower surface of the substrate;
An auxiliary NFC pattern extending from the NFC pattern and disposed inside the WPC pattern;
And
And a thermistor formed on an upper surface or a lower surface of the substrate to measure a temperature of the WPC pattern or the NFC pattern. The method according to claim 1,
The shielding sheet may include:
The antenna structure according to claim 1, 3. The method of claim 2,
The nano-
Wherein the first to Nth (N is a positive integer) nanoribbons are laminated via an adhesive. The method according to claim 1,
On the lower surface of the substrate,
Wherein the buffer structure is formed to prevent scratches caused by contact with the glass of the terminal on which the antenna structure is mounted. The method according to claim 1,
An attractor stacked between the substrate and the shielding sheet;
Further comprising an antenna structure. 6. The method of claim 5,
On the top or bottom surface of the substrate,
An NFC pattern, and an MST pattern,
The attractor includes:
Wherein the substrate is laminated on a portion of the substrate where no pattern is formed. The method according to claim 1,
Further comprising an MST pattern formed on an upper surface or a lower surface of the substrate,
Wherein the MST pattern is spaced apart from the NFC pattern. 8. The method of claim 7,
The NFC pattern, the MST pattern,
Wherein the antenna structure is formed sequentially from the outside of the substrate to the inside. 8. The method of claim 7,
The length of the MST pattern in the lateral direction is,
Wherein the diameter of the WPC pattern is less than or equal to the diameter of the WPC pattern. 8. The method of claim 7,
The length of the MST pattern in the longitudinal direction,
Wherein the diameter of the WPC pattern is not less than the diameter of the WPC pattern. 11. The method of claim 10,
The terminating end of the MST pattern may be formed,
A bent part bent in a predetermined part along the shape of the WPC pattern;
Further comprising an antenna structure. 8. The method of claim 7,
Wherein:
And an extension of a predetermined shape formed on one side,
In the extension portion,
And the MST pattern is extended. 13. The method of claim 12,
In the extension portion,
Wherein the terminals of the NFC pattern, the MST pattern, and the WPC pattern are exposed and formed. The method according to claim 1,
A graphite sheet laminated on the upper surface of the shielding sheet or the lower surface of the substrate;
Further comprising an antenna structure.

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