KR101962001B1 - An antenna including an antenna pattern formed on a top surface and a bottom surface of magnetic sheet and a method of forming the same - Google Patents

Abstract

An antenna in which antenna patterns are formed on upper and lower surfaces of a magnetic substance sheet, and a method of forming the same are disclosed. The method of forming an antenna according to an embodiment includes joining a first antenna pattern for NFC to upper and lower surfaces of a polymer sheet and laminating a second antenna pattern for MST to upper and lower surfaces of the polymer sheet do.

Description

TECHNICAL FIELD [0001] The present invention relates to an antenna including an antenna pattern formed on an upper surface and a lower surface of a magnetic substance sheet, and an antenna for forming the antenna pattern and a method of forming the antenna.

The following embodiments relate to an antenna in which antenna patterns are formed on upper and lower surfaces of a magnetic substance sheet, and a method for forming the same.

An antenna installed in a portable terminal device is divided into an external antenna and an internal antenna depending on the installation position.

As the external antenna, an antenna such as a whip type, a helical type, or the like is used. The external antenna is fixedly installed on a side surface or an upper portion of the portable terminal device, and has a structure that can be drawn in and out by a user.

Such an external antenna is disadvantageous in that it is inconvenient for use and storage because it is installed outside the portable terminal device, and the appearance of the portable terminal device is deteriorated. In addition, since the space for installing the external antenna is secured outside the portable terminal device, the external design of the portable terminal device is restricted, the design is spoiled, and the miniaturization and slimming down of the portable terminal device are difficult.

In order to compensate for the disadvantages of such an external antenna, a built-in antenna system in which an antenna is installed inside a portable terminal device is mainly used.

Since the built-in antenna is mainly used in a monopole type, a loop type or a planar inverted-F antenna (PIFA) and is installed inside the portable terminal device, A space in which the antenna can be installed must be provided, and as the portable terminal is slid or miniaturized, the space for installing the built-in antenna is also reduced.

In recent years, portable terminal apparatuses have become smaller and slimmer, and portable terminal apparatuses having an outer case made of a metal material are increasingly used for robustness and aesthetic design of portable terminal apparatuses.

However, the metal structure makes it difficult to radiate the antenna, and even if the antenna is implemented, it can handle only a limited band. Accordingly, in the case of a portable terminal having a metal structure, a metal case is limitedly applied only to a portion excluding the antenna region.
(Application No. 10-2005-0021747)

Embodiments can provide a technique for forming NFC and MST integrated antennas by directly joining an NFC antenna pattern and an MST antenna pattern to a magnetic sheet.

In addition, embodiments of the present invention can provide a magnetic induction pattern by forming asymmetric NFC antenna patterns on the top and bottom surfaces of a magnetic sheet to radiate different directions, thereby concentrating the magnetic force on the pattern adjacent to the outer case realized with the metal material of the portable terminal device, A current can be generated and radiated, and a technique capable of improving antenna performance can be provided.

In addition, the embodiments can provide a technique for preventing the antenna performance from being reduced by disposing the antenna based on the positional relationship of the slits formed in the outer case.

The method includes forming a first antenna pattern for NFC (Near Field Communication) on top and bottom surfaces of a polymer sheet, forming a second antenna pattern for MST (Magnetic Secure Transmission) To the upper and lower surfaces of the polymer sheet.

The step of joining the first antenna pattern to the upper and lower surfaces of the polymer sheet may include forming a first antenna pattern to be laminated on the upper surface of the polymer sheet and a first antenna pattern to be laminated on the lower surface of the magnetic sheet, And at least one of the position and the shape may be asymmetric.

Wherein the step of joining the second antenna pattern to the upper and lower surfaces of the polymer sheet comprises forming a second antenna pattern to be laminated on the upper surface of the polymer sheet and a second antenna pattern to be laminated on the lower surface of the magnetic sheet, And forming at least one of the forming position and the shape to be symmetrical.

The antenna according to one embodiment includes a polymer sheet, a first antenna pattern for NFC (Near Field Communication), and a second antenna pattern for MST (Magnetic Secure Transmission), and the first antenna pattern The second antenna pattern is laminated on the upper and lower surfaces of the polymer sheet.

At least one of the first antenna pattern sandwiched on the upper surface of the polymer sheet and the first antenna pattern sandwiched on the lower surface of the magnetic sheet may be asymmetric with respect to the polymer sheet.

At least one of the second antenna pattern sandwiched on the upper surface of the polymer sheet and the second antenna pattern sandwiched on the lower surface of the magnetic sheet may be symmetric with respect to the polymer sheet.

The antenna may be disposed in the electronic device such that at least a portion of the polymer sheet covers a slit formed in a case contained in the electronic device.

The antenna may be disposed in the electronic device such that the polymer sheet is not spaced apart from the slit formed in the case contained in the electronic device to cover the slit.

1 is a schematic block diagram of an electronic device in which an antenna according to one embodiment is disposed.
2 is a structural diagram for explaining a position at which an antenna is disposed in an electronic device.
3 is a schematic side view of an example of the antenna shown in Fig.
4 is a view for explaining a method of bonding an antenna pattern to a magnetic sheet.
5 shows an example of the implementation of the antenna shown in Fig.
FIG. 6 is a view for explaining antenna radiation when the antenna of FIG. 3 is disposed and operated inside a case of an electronic device.
FIG. 7 is a view for explaining an example in which the antenna of FIG. 3 is disposed inside a case of an electronic device.
8 is a view for explaining another example in which the antenna of Fig. 3 is disposed inside the case of the electronic device.
9 is a flowchart for explaining the antenna forming method shown in FIG.

It is to be understood that the specific structural or functional descriptions of embodiments of the present invention disclosed herein are presented for the purpose of describing embodiments only in accordance with the concepts of the present invention, May be embodied in various forms, and the embodiments according to the concept of this naming may be embodied in various forms and are not limited to the embodiments described herein.

Embodiments in accordance with the concepts of the present invention are capable of various modifications and may take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. However, it is not intended to limit the embodiments according to the concepts of the present invention to the specific disclosure forms, but includes changes, equivalents, or alternatives falling within the spirit and scope of the present invention.

The terms first, second, or the like may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example without departing from the scope of the right according to the concept of the present invention, the first element being referred to as the second element, Similarly, the second component may also be referred to as the first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It will be understood that, in this specification, the terms "comprises ", or" having ", and the like are to be construed as including the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of the patent application is not limited or limited by these embodiments. Like reference symbols in the drawings denote like elements.

Fig. 1 is a schematic block diagram of an electronic device in which an antenna according to an embodiment is disposed, and Fig. 2 is a structural diagram for explaining a position where an antenna is disposed in an electronic device.

Referring to Figures 1 and 2, an antenna 200 is disposed in the electronic device 100. For example, the antenna 200 may be disposed within the case 110 of the electronic device 100.

The electronic device 100 may be a personal computer (PC), a data server, or a portable electronic device. The portable electronic device may be a laptop computer, a mobile phone, a smart phone, a tablet PC, a mobile internet device (MID), a personal digital assistant (PDA), an enterprise digital assistant A digital still camera, a digital video camera, a portable multimedia player (PMP), a personal navigation device or a portable navigation device (PND), a portable game console (handheld console), an e-book e-book, or a smart device. For example, a smart device can be implemented as a smart watch or a smart band.

The case 110 of the electronic device 100 may include an upper portion 110-5, a middle portion 110-3, and a lower portion 110-7. Each of the upper portion 110-5, the central portion 110-3 and the lower portion 110-7 of the case 110 may be embodied as at least one of a conductive member such as stainless steel, metal, and aluminum.

The antenna 200 may be an antenna for NFC (Near Field Communication) and / or MST (Magnetic Secure Transmission) operation. The antenna 200 may be formed on the top and bottom surfaces of the magnetic sheet so that the antenna pattern can be radiated by generating a strong induction current in the case 110 implemented as a conductive member through radiation of different directions. As a result, the antenna 200 can improve the antenna performance. The structure of the antenna 200 will be described later with reference to FIG.

The antenna 200 may be disposed inside the case 110 of the electronic device 100. The antenna 200 needs to be disposed inside the case 110 in consideration of the arrangement position of various antennas and / or electronic parts installed in the electronic device 100. [

At this time, the antenna 200 has a positional relationship with a slit or a slit section of the case 110 defined by the upper portion 110-5 and the middle portion 110-3 of the case 110, And may be disposed inside the case 110 on the basis of the above.

For example, the antenna 200 may be arranged such that a portion of the antenna 200 covers a slit or a slit section of the case 110.

The antenna 200 may be disposed so as not to cover the slit or the slit section of the case 110 so as to be spaced apart from the slit or slit section of the case 110. [

FIG. 3 is a schematic side view of an example of the antenna shown in FIG. 1, FIG. 4 is a view for explaining a method of bonding an antenna pattern to a magnetic sheet, FIG. 5 is an example of an implementation of the antenna shown in FIG. .

3 to 5, the antenna 200 includes a magnetic sheet 210, a first antenna pattern 230, and a second antenna pattern 250.

The magnetic substance sheet 210 may be embodied as a ferrite sheet, a nanocrystal, or a polymer sheet. For example, the ferrite sheet may be at least one of Ni-Zn ferrite sheet, Mn-Zn ferrite sheet, Ni-Zn-Cu ferrite and the like.

The magnetic substance sheet 210 may include a plurality of through holes (not shown). The plurality of through holes can penetrate from the upper surface 210-3 of the magnetic substance sheet 210 to the lower surface 210-5.

The first antenna pattern 230 may be an antenna pattern for NFC (Near Field Communication) communication and / or operation. For example, the first antenna pattern 230 may emit or receive a signal for NFC.

The second antenna pattern 250 may be an antenna pattern for MST (Magnetic Secure Transmission) communication and / or operation. For example, the second antenna pattern 250 may emit or receive a signal for the MST.

When the magnetic substance sheet 210 is implemented as a polymer sheet, the first antenna pattern 230 and the second antenna pattern 250 may be bonded to the magnetic substance sheet 210 by directly applying heat and pressure according to the viscosity property of the polymer sheet. have. At this time, the viscous property of the polymer sheet is the viscous property of the binder which is one of the materials of the polymer sheet. The first antenna pattern 230 and the second antenna pattern 250 may be implemented as a copper foil.

The first antenna pattern 230 and the second antenna pattern 250 may be directly coupled to the magnetic sheet 210 to implement the NFC and MST integrated antenna 200 as shown in FIG.

A bonding sheet for bonding the first antenna pattern 230 and the second antenna pattern 250 to the magnetic sheet 210 is removed and the first antenna pattern 230 and the second antenna pattern 250 250 are directly laminated on the magnetic substance sheet 210, the thickness of the antenna 200 is reduced, and the material cost and the process cost can be eliminated compared to the conventional method, so that the unit cost can be reduced.

The first antenna pattern 230 and the second antenna pattern 250 are formed on the upper surface 210-3 and the lower surface 210-5 of the magnetic material sheet 210 through the plurality of through holes included in the magnetic material sheet 210. [ As shown in FIG.

The first antenna pattern 230 formed on the upper surface 210-3 and the first antenna pattern 230 formed on the lower surface 210-5 may be electrically connected through a plurality of through holes. The first antenna pattern 230 may be formed in a coil shape to wrap a portion of the upper surface 210-3 and the lower surface 210-5 of the magnetic substance sheet 210 through a plurality of through holes.

At this time, the first antenna pattern 230 located on the upper surface 210-3 of the magnetic substance sheet 210 and the first antenna pattern 230 located on the lower surface 210-5 of the magnetic substance sheet 210 overlap each other The magnetic substance sheet 210 may be formed on the surface of the magnetic substance sheet 210. The first antenna pattern 230 located on the upper surface 210-3 of the magnetic substance sheet 210 and the first antenna pattern 230 located on the lower surface 210-5 of the magnetic substance sheet 210 are formed on the magnetic substance sheet 210. [ At least one of the formed position and shape (e.g., size and / or width) may be asymmetric with respect to the base 210.

The second antenna pattern 250 formed on the upper surface 210-3 and the second antenna pattern 250 formed on the lower surface 210-5 may be formed to be electrically connected through the plurality of through holes. The second antenna pattern 250 may be formed in a coil shape to wrap a portion of the upper surface 210-3 and the lower surface 210-5 of the magnetic substance sheet 210 through the plurality of through holes.

The second antenna pattern 250 located on the upper surface 210-3 of the magnetic substance sheet 210 and the second antenna pattern 250 located on the lower surface 210-5 of the magnetic substance sheet 210 overlap each other . That is, the second antenna pattern 250 positioned on the upper surface 210-3 of the magnetic substance sheet 210 and the second antenna pattern 250 located on the lower surface 210-5 of the magnetic substance sheet 210, At least one of the formed position and shape (e.g., size and / or width) with respect to the substrate 210 may be symmetrical.

Since the first antenna pattern 230 and the second antenna pattern 250 are directly laminated on the magnetic substance sheet 210 so that the magnetic substance sheet 210 and the antenna patterns 230 and 250 are brought close to each other, Improvement. Specifically, the second antenna pattern 250 forms a loop, magnetic lines of force are generated in a direction perpendicular to the pattern, and magnetic lines of force are generated up to the area of the first antenna pattern 230, thereby improving the performance of the antenna 200.

FIG. 6 is a view for explaining antenna radiation when the antenna of FIG. 3 is disposed inside the case of the electronic device and FIG. 7 is a view for explaining an example in which the antenna of FIG. And Fig. 8 is a view for explaining another example in which the antenna of Fig. 3 is disposed inside the case of the electronic device.

6 to 8, the case 110 of the electronic device 100 is formed of metal among the conductive members and the first antenna pattern 230 and the second antenna pattern 250 are formed of the magnetic sheet 210 It is assumed that the antenna 200 formed on the upper surface 210-3 and the lower surface 210-5 of the antenna 210 is disposed in the case 110. [ At this time, the antenna 200 may further include an insulating layer 270.

6, the antenna 200 includes a first antenna pattern 230 and / or a second antenna pattern 250 formed on the upper surface 210-3 and the lower surface 210-5 of the magnetic sheet 210, The frequency can be implemented. Since the first antenna pattern 230 and / or the second antenna pattern 250 are formed on the upper surface 210-3 and the lower surface 210-5 of the magnetic sheet 210, Directional radiation can be achieved.

The first antenna pattern 230 and the second antenna pattern 250 formed on the lower surface 210-5 of the magnetic substance sheet 210 may be disposed on the case 100 formed of a conductive member such as a metal.

At this time, the second antenna pattern 250 forms a loop, magnetic lines of force are generated in a direction perpendicular to the pattern, and magnetic lines of force are generated up to the area of the first antenna pattern 230, thereby improving the performance of the antenna 200. That is, the first region R1 corresponding to the first antenna pattern 230 and the second region R2 corresponding to the second antenna pattern 250 are radiated in different directions, R2 can generate a strong induction current in the case 110 formed of a metal and radiate it.

The first antenna pattern 230 located on the upper surface 210-3 of the magnetic substance sheet 210 and the first antenna pattern 230 located on the lower surface 210-5 of the magnetic substance sheet 210 are asymmetric, For example, the size and / or width may be different from each other. The total resistance of the antenna 200 is reduced and the magnetic force is concentrated on the first antenna pattern 230 formed on the lower surface 210-5 of the case 210 and the metal case 100, .

7 and 8, the magnetic substance sheet 210 is disposed on the upper portion 110 of the case 110 in consideration of the position of various antennas installed in the electronic device 100 and the performance improvement of the antenna 200. [ -5 and the center portion 110-3 of the case 110. The slit or slit portion of the case 110 is defined by the center portion 110-3 and the center portion 110-3.

For example, the magnetic substance sheet 210 may be arranged to cover a slit or a slit section of the case 110. For example, the boundary region between the antenna pattern formed on the upper surface of the magnetic substance sheet 210 and the antenna pattern formed on the lower surface of the magnetic substance sheet 210 may be disposed so as to overlap with the slits of the case 110. The magnetic substance sheet 210 is formed such that the end of the magnetic substance sheet 210 on which the first antenna pattern 230 formed on the upper surface 210-3 is located is positioned in the middle portion 110-3 of the case 110 But may be arranged so as not to deviate from the end of the slit, for example, the end of the slit section.

The magnetic substance sheet 210 may be disposed so as not to cover the slit or the slit section of the case 110 so as to be spaced apart from the slit or slit section of the case 110. [ At this time, the magnetic substance sheet 210 can be arranged in the horizontal direction of the slit of the case 110, but the position of the magnetic substance sheet 210 can be independent of the position in the transverse direction.

9 is a flowchart for explaining the antenna forming method shown in FIG.

Referring to FIG. 9, the first antenna pattern 230 may be laminated on the upper surface 210-3 and the lower surface 210-5 of the polymer sheet 210 (S910).

The second antenna pattern 250 may be laminated on the upper surface 210-3 and the lower surface 210-5 of the polymer sheet 210 (S930).

For example, the first antenna pattern 230 and the second antenna pattern 250 may be laminated to the upper surface 210-3 and the lower surface 210-5 of the polymer sheet 210 simultaneously through heat and pressure .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: Electronic device
110: Case
110-3: Central
110-5:
110-7: Lower
200: antenna
210: Magnetic body sheet
210-3: Top surface of the magnetic substance sheet
210-5: the lower surface of the magnetic sheet
230: first antenna pattern
250: second antenna pattern
270: Insulation layer
R1: first region
R2: second region

Claims (8)

Bonding a first antenna pattern for NFC (Near Field Communication) to upper and lower surfaces of a first region of a magnetic sheet; And
And a second antenna pattern for MST (Magnetic Secure Transmission) on the upper and lower surfaces of the second region of the magnetic sheet,
Lt; / RTI >
Wherein the magnetic sheet is one of a ferrite sheet, a nano-crystal sheet, and a polymer sheet,
Wherein the first region and the second region are radiated in different directions,
Wherein the first antenna pattern sandwiched on the upper surface of the first region and the first antenna pattern sandwiched on the lower surface of the first region are directly bonded to the magnetic sheet so as not to overlap each other, Wherein the second antenna pattern is directly bonded to the magnetic sheet so that the second antenna pattern overlaps the second antenna pattern.
The method according to claim 1,
Wherein the step of lapping on the upper and lower surfaces of the first region comprises:
Forming a first antenna pattern to be laminated on a top surface of the magnetic substance sheet and a first antenna pattern to be laminated on a bottom surface of the magnetic substance sheet so that at least one of the formation position and the shape is asymmetrical with reference to the magnetic substance sheet
/ RTI >
The method according to claim 1,
Wherein the step of joining the upper and lower surfaces of the second region comprises:
Forming a second antenna pattern to be laminated on the upper surface of the magnetic substance sheet and a second antenna pattern to be laminated on a lower surface of the magnetic substance sheet so that at least one of the formed position and the shape is symmetrical with respect to the magnetic substance sheet
/ RTI >
Magnetic sheet;
A first antenna pattern for NFC (Near Field Communication); And
A second antenna pattern for MST (Magnetic Secure Transmission)
/ RTI >
The first antenna pattern is laminated on the upper surface and the lower surface of the first region of the magnetic sheet and the second antenna pattern is laminated on the upper and lower surfaces of the second region of the magnetic sheet,
Wherein the magnetic sheet is one of a ferrite sheet, a nano-crystal sheet, and a polymer sheet,
Wherein the first region and the second region are radiated in different directions,
Wherein the first antenna pattern sandwiched on the upper surface of the first region and the first antenna pattern sandwiched on the lower surface of the first region are directly bonded to the magnetic sheet so as not to overlap each other, 2 antenna pattern and the second antenna pattern sandwiched on the lower surface of the second region are directly bonded to the magnetic sheet so as to overlap with each other.
5. The method of claim 4,
The first antenna pattern being laminated on the upper surface of the magnetic material sheet and the first antenna pattern being laminated on the lower surface of the magnetic material sheet are formed so that at least one of the forming position and the shape is asymmetrical
antenna.
5. The method of claim 4,
The second antenna pattern being laminated on the upper surface of the magnetic substance sheet and the second antenna pattern being laminated on the lower surface of the magnetic substance sheet may be formed so that at least one of the forming position and the shape is symmetrical
antenna.
5. The method of claim 4,
Wherein the antenna is disposed in the electronic device such that at least a part of the magnetic sheet covers a slit formed in a case included in the electronic device.
5. The method of claim 4,
Wherein the antenna is disposed in the electronic device such that the magnetic sheet is not spaced apart from a slit formed in a case included in the electronic device to cover the slit.

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