WO2018008996A1

WO2018008996A1 - Coil-type antenna and forming method therefor

Info

Publication number: WO2018008996A1
Application number: PCT/KR2017/007219
Authority: WO
Inventors: 김남일; 김영태; 황이슬; 이경호; 성원모
Original assignee: 주식회사 이엠따블유
Priority date: 2016-07-07
Filing date: 2017-07-06
Publication date: 2018-01-11
Also published as: CN206532876U; KR101741364B1; CN107591616B; CN107591616A

Abstract

A coil-type antenna and a forming method therefor are disclosed. An antenna according to an embodiment comprises: a first antenna pattern for at least one of near field communication (NFC) and magnetic secure transmission (MST), having one end connected to a first feeder through a first connection part and an other end connected to a second feeder through a second connection part; and a second antenna pattern for MST, having one end connected to the other end of the first antenna pattern and an other end connected to a third feeder through a third connection part.

Description

Coil-type antenna and its formation method

The embodiments below relate to a coil type antenna and a method of forming the same.

The antenna is applied to the central part of the back of the portable terminal, such as attached to the battery in the center or bottom of the smartphone or attached to the rear case.

Certain antennas, for example NFC antennas, have to maintain a certain size or more in order to satisfy the performance of the NFC certification standard, causing a price increase, and the large antenna size is adjacent to other antennas, affecting other antenna performances. Get mad.

Flexible Printed Circuit Boards (FPCBs) are capable of three-dimensional wiring alone, enabling compact and lightweight devices, high durability to repeated bending, and high density wiring (0.2 m / m). It is widely used in electronic products because it has the advantage of pitch), no wiring error, good assembly, high reliability, and continuous production method.

Such FPCB is widely used to form an antenna pattern of an antenna mounted on a mobile phone for communicating with an external device, and causes a price increase.

Embodiments can provide a technique that can significantly reduce the manufacturing cost of the antenna by forming the antenna pattern on the PVC sheet rather than the FPCB to reduce the manufacturing size of the FPCB.

Embodiments can provide a technology that can operate as a dual band antenna in the form of a hybrid antenna pattern designed without the antenna to separate the antenna radiation characteristics.

Embodiments can provide a technique that can be bonded in appearance than the solder method by bonding a portion of the antenna pattern formed on the PVC sheet to the FPCB through diffusion bonding.

An antenna according to an embodiment may include an antenna pattern for NFC (Near Field Communication), a first feeder connected through one end and a first connection part of the antenna pattern, and connected through the other end and a second connection part of the antenna pattern. And a second feeder, wherein the first feeder, the second feeder, the first connection part, and the second connection part are formed on a printed circuit board (PCB), and the antenna pattern is formed on a polyvinyl chloride (PVC) sheet. Can be.

According to an embodiment, there is provided a method of forming an antenna on a polyvinyl chloride (PVC) sheet for forming a first antenna pattern for near field communication (NFC), and a first feeder connected through one end of the antenna pattern and a first connection part. Forming a second feeder connected to the other end of the antenna pattern and a second connection part, the first connection part, and the second connection part on a printed circuit board (PCB); and laminating the PCB and the PVC sheet. It may include a step.

According to another embodiment of the present invention, at least one of Near Field Communication (NFC) and Magnetic Secure Transmission (MST), one end of which is connected to the first feeder through the first connection part and the other end of the antenna, to the second feeder through the second connection part And a second antenna pattern for the MST, one end of which is connected to the other end of the first antenna pattern and the other end of which is connected to the third feeder through a third connection part.

The first antenna pattern may be formed on a printed circuit board (PCB), and the second antenna pattern may be formed on a polyvinyl chloride (PVC) sheet.

One end of the second antenna pattern is electrically connected to the other end of the first antenna pattern by diffusion bonding through a first hole formed in the PVC sheet, and the other end of the second antenna pattern is formed of the second sheet of PVC sheet. It may be electrically connected to the third connecting portion by diffusion bonding through a hole.

The first feeder and the second feeder may receive first feed signals in the operation mode of the NFC, and the first feeder and the third feeder may receive second feed signals in the operation mode of the MST. have.

According to another aspect of the present invention, there is provided an antenna forming method, wherein one end is connected to a first feeder through a first connection part, and the other end is connected to a second feeder through a second connection part. Forming a first antenna pattern for at least one, and forming a second antenna pattern for the MST, one end of which is connected to the other end of the first antenna pattern and the other end of which is connected to the third feeder through a third connection part; It may include the step.

The forming of the first antenna pattern may include forming the first antenna pattern on a PCB, and the forming of the second antenna pattern may include forming the second antenna pattern on a polyvinyl chloride (PVC) sheet. It may include.

The method includes laminating the PCB and the PVC sheet, and electrically connecting one end of the second antenna pattern to the other end of the first antenna pattern by diffusion bonding through a first hole formed in the PVC sheet. And electrically connecting the other end of the second antenna pattern to the third connection part by diffusion bonding through a second hole formed in the PVC sheet.

The method may further include forming the first hole corresponding to one end of the second antenna pattern and the second hole corresponding to the other end of the second antenna pattern in the PVC sheet.

1A is an example of an upper surface of an antenna according to an embodiment.

1B is an example of a bottom surface of an antenna according to an embodiment.

FIG. 2 is a diagram for describing electrical characteristics and NFC performance when the antennas of FIGS. 1A and 1B are implemented.

3A is an example of an upper surface of an antenna according to another embodiment.

3B is an example of a bottom surface of an antenna according to another embodiment.

FIG. 4 is a diagram for describing a hybrid pattern structure of the antenna illustrated in FIGS. 3A and 3B.

FIG. 5 is a diagram for describing a manufacturing process of the antenna illustrated in FIGS. 3A and 3B.

FIG. 6 is a diagram for describing electrical characteristics, NFC performance, and MST performance when the antennas illustrated in FIGS. 3A and 3B are implemented.

7A and 7B are diagrams for explaining diffusion junctions applied when the antennas of FIGS. 1A and 1B or the antennas of FIGS. 2A and 2B are manufactured.

8 is an example of an electronic device including the antenna of FIGS. 1A and 1B or the antenna of FIGS. 2A and 2B.

Specific structural or functional descriptions of the embodiments according to the inventive concept disclosed herein are only illustrated for the purpose of describing the embodiments according to the inventive concept, and the embodiments according to the inventive concept. These may be embodied in various forms and are not limited to the embodiments described herein.

Embodiments according to the inventive concept may be variously modified and have various forms, so embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to specific embodiments, and includes modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The terms are only for the purpose of distinguishing one component from another component, for example, without departing from the scope of the rights according to the inventive concept, the first component may be called a second component, Similarly, the second component may also be referred to as the first component.

When a component is said to be “connected” or “connected” to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Expressions that describe the relationship between components, such as “between” and “immediately between” or “neighboring to” and “directly neighboring”, 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. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms “comprise” or “have” are intended to designate that the stated feature, number, step, operation, component, part, or combination thereof exists, but includes one or more other features or numbers, It is to be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, 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. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. Do not.

Hereinafter, exemplary 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 numerals in the drawings denote like elements.

1A is an example of an upper surface of an antenna according to an embodiment, FIG. 1B is an example of a lower surface of an antenna according to an embodiment, and FIG. 2 is an electrical characteristic when the antennas of FIGS. 1A and 1B are implemented. It is a figure for demonstrating NFC performance.

1A to 2, the antenna 100 includes an antenna pattern 110,

connections

120 and 130,

feeders

140 and 150, a printed circuit board (PCB) 160, and a PVC sheet (polyvinyl chloride). sheet 170). In addition, the antenna 100 may further include a magnetic sheet (not shown).

The antenna 100 may be an antenna for Near Field Communication (NFC) communication and / or operation. For example, the antenna 100 may operate as a tag during the card mode and may operate as a reader during the reader mode.

The antenna pattern 110 may be an antenna pattern for NFC. For example, the antenna pattern 110 may radiate or receive a signal for NFC operation.

The first feeder 140 and the second feeder 150 may transmit the feed signals to the antenna pattern 110 for the NFC operation.

One end 110-3 of the antenna pattern 110 may be connected to the first feeder 140 through the first connector 120. The other end 110-5 of the antenna pattern 110 may be connected to the second feeder 150 through the second connector 130.

The first feeder 140, the second feeder 150, the first connector 120, and the second connector 130 may be formed on the PCB 160. For example, the PCB 160 may be a flexible printed circuit board (FPCB).

The antenna pattern 110 may be formed on the PVC sheet 170. The antenna pattern 110 may be implemented using an enameled coil. The antenna pattern 110 may be formed (or bonded) to the PVC sheet 170 in a coil winding type (coil). For example, after the hole is first formed in the PVC sheet 170, the shape of the antenna pattern 110 may be implemented by winding the coil in a constant shape and interval while applying heat to the coil having a constant shape and interval. have.

The PCB 160 having the first feeder 140, the second feeder 150, the first connector 120, and the second connector 130 may be laminated with the PVC sheet 170 on which the antenna pattern 110 is formed. Can be. In this case, one end 110-3 and the other end 110-5 of the antenna pattern 110 may be bonded to the PCB 160 through diffusion bonding. For example, holes corresponding to one end 110-3 and the other end 110-5 of the antenna pattern 110 may be formed in the PCV sheet 170. One end 110-3 of the antenna pattern 110 corresponds to the first connection part 120 by diffusion bonding through a hole corresponding to the one end 110-3 of the antenna pattern 110 formed in the PVC sheet 170. May be bonded to an area of the PCB 160. That is, one end 110-3 of the antenna pattern 110 may be electrically connected to the first connector 120. The other end 110-5 of the antenna pattern 110 corresponds to the second connection portion 130 by diffusion bonding through a hole corresponding to the other end 110-5 of the antenna pattern 110 formed on the PVC sheet 170. May be bonded to an area of the PCB 160. That is, the other end 110-5 of the antenna pattern 110 may be electrically connected to the second connector 130. Holes corresponding to each of the one end 110-3 and the other end 110-5 of the antenna pattern 110 are formed in the PVC sheet 170 before or after the antenna pattern 110 is formed in the PVC sheet 170. Can be. Diffusion bonding is described later with reference to FIGS. 7A and 7B.

Thereafter, the laminated FPCB 160 and the PVC sheet 170 may be laminated with the magnetic sheet.

Only the first feeder 140, the second feeder 150, the first connector 120, and the second connector 130 are formed on the PCB 160, and the antenna pattern 110 is not the PCB 160 but the PVC. By being formed in the sheet 170 to reduce the manufacturing size of the PCB 160, the manufacturing cost of the antenna 100 can be significantly reduced.

In addition, the first feeder 140, the second feeder 150, the first connecting portion 120, and the second connecting portion 130 are formed on the PCB 160, and the antenna pattern 110 is formed of the PVC sheet 170. The antenna 100 formed in the may have electrical characteristics and NFC performance as shown in FIG.

3A is an example of an upper surface of an antenna according to another embodiment, FIG. 3B is an example of a lower surface of an antenna according to another embodiment, and FIG. 4 illustrates a hybrid pattern structure of the antenna shown in FIGS. 3A and 3B. 5 is a view for explaining a manufacturing process of the antenna shown in Figures 3a and 3b, Figure 6 is an electrical characteristic, NFC performance and the case of implementing the antenna shown in Figures 3a and 3b It is a figure for demonstrating MST performance.

3A to 6, the antenna 200 may include a first antenna pattern 210, a second antenna pattern 220,

connections

230, 240 and 250,

feeders

260, 270, and 280, It may include a printed circuit board (PCB) 290 and a polyvinyl chloride sheet 295. In addition, the antenna 200 may further include a magnetic sheet 297.

The antenna 200 may be an antenna for Near Field Communication (NFC) and Magnetic Secure Transmission (MST) operations.

For example, the antenna 200 may operate as an antenna for performing Near Field Communication (NFC) communication and / or operation. The antenna 200 may operate as a tag during the card mode and may operate as a reader during the reader mode. In addition, the antenna 200 may operate as an antenna for performing a magnetic secure transmission (MST) operation.

The first antenna pattern 210 may be an antenna pattern for at least one of near field communication (NFC) and magnetic secure transmission (MST). The second antenna pattern 220 may be an antenna pattern for MST.

One end 210-3 of the first antenna pattern 210 is connected to the first feeder 260 through the first connector 230, and the other end 210-5 of the first antenna pattern 210 is connected to the second. The second feeder 270 may be connected to the second through feeder 240.

One end 220-3 of the second antenna pattern 220 is connected to the other end 210-5 of the first antenna pattern 210, and the other end 220-5 of the second antenna pattern 220 is connected to the third end. The third feeder 280 may be connected to the connection part 250.

For example, the first antenna pattern 210 may be formed on the PCB 290. In addition, the

connections

230, 240, and 250 and the

feeders

260, 270, and 280 may also be formed in the PCB 290. For example, the PCB 290 may be a flexible printed circuit board (FPCB).

As another example, the

connections

230, 240 and 250 and

feeders

260, 270 and 280 are formed in the PCB 290, and the first antenna pattern 210 is the same or different PCV sheet as the PVC sheet 295. Can be formed on. This is as described with reference to FIGS. 1A to 2. Therefore, detailed description is omitted.

The second antenna pattern 220 may be formed on the PVC sheet 295. The second antenna pattern 220 may be implemented using an enameled coil. The second antenna pattern 220 may be formed (or bonded) to the PVC sheet 295 in a coil winding type (coil). For example, after the hole is first formed in the PVC sheet 295, the shape of the second antenna pattern 220 is implemented by winding the coils at a constant shape and interval while applying heat to the coils having a constant shape and interval. Can be.

The PCB 290 on which the first antenna pattern 210, the connecting

portions

230, 240, and 250 and the

feeders

260, 270, and 280 are formed is laminated with the PVC sheet 295 on which the second antenna pattern 220 is formed. Can be. At this time, one end 220-3 of the second antenna pattern 220 is bonded to a region of the PCB corresponding to the other end 210-5 of the first antenna pattern 210 through diffusion bonding, and the second antenna pattern ( The other end 220-5 of 220 may be bonded to an area of the PCB corresponding to the third connector 280 through diffusion bonding. For example, holes corresponding to one end 220-3 and the other end 220-5 of the second antenna pattern 220 may be formed in the PVC sheet 295. One end 220-3 of the second antenna pattern 220 has a first antenna pattern by diffusion bonding through a hole corresponding to one end 220-3 of the second antenna pattern 220 formed in the PVC sheet 295. It may be electrically connected to the other end 210-5 of 210. The other end 220-5 of the second antenna pattern 220 is connected to the third connection part by diffusion bonding through a hole corresponding to the other end 220-5 of the second antenna pattern 220 formed on the PVC sheet 295. 280 may be electrically connected. Holes corresponding to each of the one end 220-3 and the other end 220-5 of the second antenna pattern 220 may be formed of a PVC sheet before or after the second antenna pattern 220 is formed on the PVC sheet 295. 170). Diffusion bonding is described later with reference to FIGS. 7A and 7B.

Thereafter, the laminated PCB 290 and the PVC sheet 295 may be laminated with the magnetic sheet 297.

As shown in FIG. 4, the first antenna pattern 210 and the second antenna pattern 220 are connected in a hybrid pattern structure to receive feed signals from the

feeders

260, 270, and 280, thereby providing an antenna 200. ) May be implemented as a dual band antenna in the form of one (eg hybrid) pattern.

For example, in the NFC operation mode of the first frequency band, the first feeder 260 and the second feeder 270 may transmit the first feed signals to the first antenna pattern 210. Thus, the antenna 200 may operate as an NFC antenna. The first frequency band may be a 13.56 MHz band.

For another example, in the MST operation mode of the second frequency band 100 to 200 kHz, the first feeder 260 and the third feeder 280 may transmit the second feed signals to the first antenna pattern 210 and the second. It may be transmitted to the antenna pattern 220. Thus, the antenna 200 may operate as an MST antenna. The second frequency band may be a 100 to 200 kHz band.

That is, by operating the antenna 200 in one antenna pattern in consideration of the frequency characteristics, the antenna 200 separates the antenna radiation characteristics in consideration of the operation as each antenna (for example, MST antenna and NFC antenna). There is no need to do it. Thus, the size of the antenna 200 may be reduced.

In addition, since the region of the first antenna pattern 210 and the region of the second antenna pattern 220 are formed in a separable structure, the freedom of designing the antenna pattern may be high.

Only the first antenna pattern 210, the

connections

230, 240, and 250 and the

feeders

260, 270, and 280 are formed on the PCB 290, and the second antenna pattern 220 is not the PCB 290. By being formed in the PVC sheet 295 to reduce the manufacturing size of the PCB 290, the manufacturing cost of the antenna 200 can be significantly reduced.

In addition, the antenna 200 operating by connecting the first antenna pattern 210 and the second antenna pattern 220 in a hybrid pattern structure may have electrical characteristics, NFC performance, and MST performance as shown in FIG. 6. have.

As described above, after the

PVC sheet

170 or 295 is laminated to the

PCB

160 or 290, a portion (eg, one end or the other end) of the

antenna pattern

110 or 220 formed on the PVC sheet 170 or 295. ) May be bonded to the

PCB

160 or 290 by diffusion bonding through holes corresponding to a portion (eg, one end or the other end) of the

antenna pattern

110 or 220 formed in the

PVC sheet

170 or 295. .

The process of diffusion bonding may be in the same order as in FIG. 7A. For convenience of explanation, it is assumed that the

antenna pattern

110 or 220 is formed on the

PVC sheet

170 or 295 using an enamel coil. As shown in FIG. 7A, the enamel of the enamel coil can be removed by primary energization through holes formed in the

PVC sheet

170 or 295. After the primary energization, the de-enameled coil may be bonded, ie electrically connected, to the

PCB

160 or 290 through the secondary energization.

As shown in FIG. 7B, when a part of the

antenna pattern

110 or 220 formed on the

PVC sheet

170 or 295 is bonded to the

PCB

160 or 290 through diffusion bonding, it is cleaner in appearance than the solder method. Can be bonded. In addition, the problem of rising electrical resistance when using conductive adhesives can be solved.

Referring to FIG. 8, the electronic device 800 may include an antenna 810. The electronic device 800 may perform NFC and / or MST operations through the antenna 810.

The antenna 810 of FIG. 8 may be implemented with the antenna 100 of FIGS. 1A and 1B or the antenna 200 of FIGS. 2A and 2B.

The electronic device 800 may be a personal computer (PC), a data server, or a portable electronic device.

Portable electronic devices include laptop computers, mobile phones, smart phones, tablet PCs, mobile internet devices (MIDs), personal digital assistants (PDAs), enterprise digital assistants (EDAs). ), Digital still cameras, digital video cameras, portable multimedia players (PMPs), personal navigation devices or portable navigation devices (PNDs), handheld consoles, e-books ( It may be implemented as an e-book or a smart device. For example, the smart device may be implemented as a smart watch or a smart band.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

Claims

Antenna patterns for Near Field Communication (NFC);

A first feeder connected to one end of the antenna pattern through a first connection part; And

A second feeder connected to the other end of the antenna pattern and a second connection part;

Including,

And the first feeder, the second feeder, the first connection part, and the second connection part are formed on a printed circuit board (PCB), and the antenna pattern is formed on a polyvinyl chloride (PVC) sheet.
Forming a first antenna pattern for near field communication (NFC) on a polyvinyl chloride (PVC) sheet;

A first feeder connected through one end of the antenna pattern and a first connection part, a second feeder connected through the other end and the second connection part of the antenna pattern, the first connection part, and the second connection part by a printed circuit board Forming in); And

Laminating the PCB and the PVC sheet

Antenna forming method comprising a.
A first antenna pattern for at least one of Near Field Communication (NFC) and Magnetic Secure Transmission (MST), one end of which is connected to the first feeder through the first connection portion and the other end of which is connected to the second feeder through the second connection portion; And

A second antenna pattern for the MST, one end of which is connected to the other end of the first antenna pattern and the other end of which is connected to the third feeder through a third connection part;

Antenna comprising a.
The method of claim 1,

The first antenna pattern is formed on a printed circuit board (PCB), and the second antenna pattern is formed on a polyvinyl chloride (PVC) sheet.
The method of claim 4, wherein

One end of the second antenna pattern is electrically connected to the other end of the first antenna pattern by diffusion bonding through a first hole formed in the PVC sheet,

And the other end of the second antenna pattern is electrically connected to the third connection portion by diffusion bonding through a second hole formed in the PVC sheet.
The method of claim 3,

The first feeder and the second feeder when the operating mode of the NFC receives the first feed signals,

And the first feeder and the third feeder receive second feed signals when in the operation mode of the MST.
A first antenna pattern for at least one of Near Field Communication (NFC) and MST (Magnetic Secure Transmission), one end of which is connected to the first feeder through the first connection part and the other end of which is connected to the second feeder through the second connection part. Forming; And

Forming a second antenna pattern for the MST, one end of which is connected to the other end of the first antenna pattern and the other end of which is connected to the third feeder through a third connection part;

Antenna forming method comprising a.
The method of claim 7, wherein

Forming the first antenna pattern,

Forming the first antenna pattern on the PCB

Including,

Forming the second antenna pattern,

Forming the second antenna pattern on a polyvinyl chloride (PVC) sheet

Antenna forming method comprising a.
The method of claim 8,

Laminating the PCB and the PVC sheet;

Electrically connecting one end of the second antenna pattern to the other end of the first antenna pattern by diffusion bonding through a first hole formed in the PVC sheet; And

Electrically connecting the other end of the second antenna pattern to the third connecting portion by diffusion bonding through a second hole formed in the PVC sheet;

Antenna forming method further comprising.
The method of claim 9,

Forming the first hole corresponding to one end of the second antenna pattern and the second hole corresponding to the other end of the second antenna pattern in the PVC sheet;

Antenna forming method further comprising.