WO2019146944A1 - Wireless charging coil module and wireless charging device - Google Patents

Abstract

A wireless charging coil module comprises: a first film; a coil part disposed on the first film and including an inner pad and an outer pad; a shielding member disposed on the coil part and having a receiving portion; and a connection substrate at least partly disposed in the receiving portion. The receiving portion may comprise: a first receiving portion formed in a first direction from the inner pad toward the outer pad; and a second receiving portion connected to the first receiving portion and formed in a second direction different from the first direction. The connection substrate may comprise: a first connection portion disposed in the first receiving portion and connected to the inner pad; a second connection portion disposed in the second receiving portion and connected to the outer pad; and a third connection portion extending from the second connection portion and including a bent portion.

Description

Wireless charging coil module and wireless charging device

Embodiments relate to a wireless charging coil module and a wireless charging device.

Portable terminals, such as mobile phones and laptops, include a battery for storing power and a circuit for charging and discharging the battery. In order for the battery of such a terminal to be charged, power must be supplied from an external charger.

2. Description of the Related Art [0002] Generally, as an example of an electrical connection between a charging device and a battery for charging electric power of a battery, a commercial electric power is supplied to a terminal for converting electric power into voltage and current corresponding to the battery, Supply method. This type of terminal supply is accompanied by the use of physical cables or wires. Therefore, when handling a lot of terminal-supplied equipment, many cables occupy considerable work space, are difficult to organize, and are not well apparent. Also, the terminal supply method may cause problems such as instantaneous discharge due to different potential difference between terminals, burnout due to foreign substances, fire, natural discharge, battery life and deterioration of performance.

In order to solve such a problem, a charging system (hereinafter referred to as a "wireless charging system") and a control method using a method of transmitting power wirelessly are proposed. In addition, since the wireless charging system has not been installed in some portable terminals in the past and the consumer has to purchase a separate wireless charging receiver accessory, the demand for the wireless charging system is low, but the wireless charging user is expected to increase rapidly. Wireless charging function is expected to be equipped basically.

Such a wireless charging system is equipped with a wireless charging module.

1 is an exploded perspective view showing a conventional wireless charging coil module.

As shown in Fig. 1, the coil portion 2 is disposed on the insulating layer 1. [ A connecting portion 3 which is connected to the inner pad of the coil portion 2 across the coil portion 2 is disposed below the insulating layer 1. [ That is, one side of the connection part 3 is connected to the inner pad of the coil part 2 through the insulating layer 1, and the other side of the connection part 3 is connected to the substrate 4. In addition, the outer pad of the coil part 2 is also connected to the substrate 4. Wireless power is transmitted via the coil section 2 or wireless power is received and charged to the battery.

There is a problem that the thickness of the wireless charging coil module is increased because the connecting portion 3 is disposed under the insulating layer 1 in the conventional wireless charging coil module. When the thickness of the connection part 3 is reduced in order to reduce the thickness of the wireless charging coil module, the resistance of the wireless charging coil module increases. Further, in order to arrange the connection part 3 in the conventional wireless charging coil module, there is a configuration for supplementing a deviation due to the thickness of the connection part 3 by attaching a separate sheet to a part where the wireless charging coil module such as a terminal is attached .

In the conventional wireless charging coil module, the connection between the connection part 3 and the inner pad of the coil part 2, between the outer pad of the coil part 2 and the substrate 4 and between the connection part 3 and the substrate 4 A reflow process is performed. In this case, there is a problem that the contact resistance is increased.

In the conventional wireless charging coil module, there is a problem that the process automation is not performed, the process time is increased, and mass production is impossible.

The embodiment provides a wireless charging coil module and a wireless charging device of a new structure.

Embodiments provide a wireless charging coil module and a wireless charging device that can minimize resistance.

Embodiments provide a wireless charging coil module and a wireless charging device capable of reducing thickness.

The embodiment provides a wireless charging coil module and a wireless charging device having excellent heat dissipation performance.

Embodiments provide a wireless charging coil module and a wireless charging device capable of mass production by process automation.

A wireless charging coil module according to an embodiment includes: a first film; A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad; A shielding member disposed on the coil portion, the shielding member having a receiving portion; And a connection substrate at least partially disposed in the accommodating portion. Wherein the receiving portion includes: a first receiving portion formed in a first direction from the inner pad toward the outer pad; And a second accommodating portion connected to the first accommodating portion and formed in a second direction different from the first direction. The connection board includes: a first connection portion disposed in the first accommodation portion and connected to the inner pad; A second connection portion disposed in the second accommodation portion and connected to the outer pad; And a third connection part extending from the second connection part and including a bent part.

A wireless charging coil module according to an embodiment includes: a first film; A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad; A shielding member disposed on the coil portion, the shielding member having a receiving portion; And a connecting substrate at least partially disposed in the receiving portion. The connection substrate includes a first protective layer; An insulating layer disposed on the first passivation layer; A second protective layer disposed on the insulating layer; A first conductive line disposed between the first passivation layer and the insulating layer; And a second conductive line disposed between the insulating layer and the second passivation layer. A first connection part in which the second conductive line is disposed; A second connection part in which the first conductive line and the second conductive line are overlapped in a vertical direction; And a third connection part in which the first conductive line and the second conductive line are overlapped in a horizontal direction without overlapping in a vertical direction.

A wireless charging coil module according to an embodiment includes: a first film; A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad; A shielding member disposed on the coil portion, the shielding member having a receiving portion; And a connection substrate at least partially disposed in the accommodating portion. The connection board includes: a first connecting member connected to the outer pad; a second connecting member connected to the inner pad; A first contact portion connected to the first connection member; And a second contact portion connected to the second connection member. Wherein the first connection member and the second connection member are exposed to a first surface of the connection substrate and the first contact portion and the second contact portion are exposed to a second surface different from the first surface of the connection substrate have.

According to the embodiment, since the thickness of the coil portion is increased to reduce resistance and heat generation, it is not necessary to provide a separate heat radiating member.

According to the embodiment, since the EMB shielding material is used in a thin thickness, the shielding effect is excellent and the thickness is reduced. In addition, since the thickness of the EMB shielding material is thinner than the thickness of the coil part, the thickness of the wireless charging coil module as a whole can be reduced.

According to an embodiment, a single substrate, that is, a connecting substrate, has a first connecting line function for extending an electrical connection from the inside of the nose portion to the outside of the nose portion and a second connecting line function for extending the electrical connection from the nose portion to the main substrate. Function and a fastening function for fastening with the main board can be achieved at the same time, so that the structure can be simplified and the cost can be reduced. The first connection line function is realized by a second conductive line embedded in the first connection portion of the connection board and the second connection line function is realized by the first and second conductive lines embedded in the second connection portion and the second connection portion of the main board And the fastening function can be realized by a connector disposed at one end of the third connection part of the connection board.

According to the embodiment, the first connection portion and the third connection portion of the connection board are disposed toward the inside of the coil portion, thereby enabling mass production by automation of the process.

According to an embodiment of the present invention, since the connection board is embodied as a flexible board and is rotated with respect to the second connection portion to the third connection portion of the connection board, the connection between the first connector and the second connector for fastening to the second connector of the main board There is no need for additional connection lines.

According to the embodiment, since the first and second conductive lines arranged in the third connection part of the connection board to be rotated to be connected to the second connector of the main board are arranged so as to be spaced apart from each other in the horizontal direction, Can be promoted.

According to the embodiment, the receiving portion is formed in the shielding member and / or the heat radiating member disposed on the coil portion, and the connecting board is inserted into the receiving portion, so that the electrical connection between the connecting board and the coil portion can be facilitated.

1 is an exploded perspective view showing a conventional wireless charging coil module.

2 is a block diagram illustrating a wireless charging system in accordance with an embodiment.

3 is a block diagram illustrating the structure of a wireless power transmitter according to an embodiment.

4 is a block diagram illustrating the structure of a wireless power receiver interlocked with the wireless power transmitter of FIG.

5 shows a wireless power receiver according to an embodiment.

6 is a perspective view showing a wireless charging coil module according to the first embodiment.

FIG. 7 shows a view from the coil part of the wireless charging coil module according to the first embodiment.

8 is a perspective view showing a shielding member disposed on the coil part in the wireless charging coil module according to the first embodiment.

Fig. 9 shows a forming position of a receiving portion of the shielding member disposed on the coil portion in the wireless charging coil module according to the first embodiment.

10 is a perspective view illustrating a connection board of the wireless charging coil module according to the first embodiment.

11 is a plan view schematically illustrating the inside of a connection board of a wireless charging coil module according to the first embodiment.

12A to 12E are cross-sectional views of the connection board of the wireless charging coil module of Fig.

13 is a perspective view showing the wireless charging coil module according to the second embodiment.

14 is a perspective view showing a heat dissipating member disposed on a shielding member in the wireless charging coil module according to the second embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it is to be understood that the technical spirit of the present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. It is to be understood that within the scope of the appended claims, May be used. It is also to be understood that the terms (including technical and scientific terms) used in the embodiments of the present invention, unless otherwise explicitly specified and described, are to be understood as generally understood by one of ordinary skill in the art to which the present invention pertains. And terms that are commonly used, such as predefined terms, may be interpreted in light of the contextual meaning of the related art. Moreover, the terms used in the embodiments of the present invention are intended to illustrate the embodiments and are not intended to limit the present invention. In the present specification, a singular form may include plural forms unless specifically stated in the wording, and may be a combination of A, B, and C when it is described as " at least one (or more than one) Or < / RTI > all possible combinations. In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms are not limited to the nature, order or order of the constituent elements. In addition, when an element is described as being 'connected', 'coupled' or 'connected' to another element, the element is not only directly connected to, coupled to, or connected to the other element, Or " connected " due to another component between the other components. In addition, when described as being formed or disposed on "upper or lower" of each component, upper or lower (lower) is not limited to the case where two components are in direct contact with each other, But also includes the case where another component is formed or disposed between two components. Also, in the case of "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.

In the description of the embodiments, an apparatus for transmitting wireless power on a wireless power charging system includes a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, a transmitter, , A wireless power transmitter, and a wireless charging device. For the sake of convenience, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a receiving terminal, a receiving side, a receiving device, a receiver Terminals and the like can be used in combination.

The wireless charging device according to the embodiment may be configured as a pad type, a cradle type, an access point (AP) type, a small base type, a stand type, a ceiling embedded type, a wall type, Power may be transmitted to the device.

As an example, a wireless power transmitter can be used not only on a desk or on a table, but also developed for automobiles and used in a vehicle. A wireless power transmitter installed in a vehicle can be provided in a form of a stand that can be easily and stably fixed and mounted.

A mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, an MP3 player, (Hereinafter referred to as a " device ") capable of charging a battery by mounting a wireless power receiving means according to an embodiment, but not limited thereto, may be used for a small electronic device such as a toothbrush, an electronic tag, a lighting device, Quot;), and the term terminal or device may be used in combination. A wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.

A wireless power receiver according to an embodiment may include at least one wireless power transmission scheme and may receive wireless power from two or more wireless power transmitters at the same time. Here, the wireless power transmission scheme may include at least one of the electromagnetic induction scheme, the electromagnetic resonance scheme, and the RF wireless power transmission scheme. Generally, a wireless power transmitter and a wireless power receiver that constitute a wireless power system can exchange control signals or information through in-band communication or Bluetooth low energy (BLE) communication. Here, the in-band communication and the BLE communication can be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, and the like. For example, the wireless power receiver can transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching on / off the current induced through the reception coil in a predetermined pattern. The information transmitted by the wireless power receiver may include various status information including received power intensity information. At this time, the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.

2 is a block diagram illustrating a wireless charging system according to an embodiment.

Referring to FIG. 2, the wireless charging system includes a wireless power transmitter 10 for transmitting power wirelessly, a wireless power receiver 20 for receiving the transmitted power, and an electronic device 30 Lt; / RTI >

For example, the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 can perform in-band communication in which information is exchanged using the same frequency band as that used for wireless power transmission. In another example, the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 perform out-of-band communication in which information is exchanged using a different frequency band different from the operating frequency used for wireless power transmission .

For example, information exchanged between the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 may include control information as well as status information of each other. Here, the status information and the control information exchanged between the transmitting and receiving end will become more apparent through the description of the embodiments to be described later.

The in-band communication and the out-of-band communication may provide bidirectional communication, but the present invention is not limited thereto. In another embodiment, the in-band communication and the out-of-band communication may be provided.

For example, the unidirectional communication may be that the wireless power receiving terminal 20 transmits information only to the wireless power transmitting terminal 10, but the present invention is not limited thereto, and the wireless power transmitting terminal 10 may transmit information Lt; / RTI >

In the half duplex communication mode, bidirectional communication is possible between the wireless power receiving terminal 20 and the wireless power transmitting terminal 10, but information can be transmitted only by any one device at any time.

The wireless power receiving terminal 20 according to the embodiment may acquire various status information of the electronic device 30. [ For example, the status information of the electronic device 30 may include current power usage information, information for identifying a running application, CPU usage information, battery charge status information, battery output voltage / current information, And is information obtainable from the electronic device 30 and available for wireless power control.

3 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment.

3, the wireless power transmitter 200 may include a power conversion unit 210, a power transmission unit 220, a communication unit 230, a control unit 240, and a sensing unit 250 . It should be noted that the configuration of the wireless power transmitter 200 described above is not necessarily an essential configuration, and may be configured to include more or less components.

As shown in FIG. 3, when power is supplied from the power supply unit 260, the power conversion unit 210 can convert the power to a predetermined intensity.

To this end, the power conversion unit 210 may convert the power supplied from the power supply unit 260 into the power for wireless transmission.

The power transmission unit 220 may be configured to include a multiplexer 221 (or a multiplexer) and a transmission coil 222. [ In addition, the power transmitting unit 220 may include a carrier generator (not shown) for generating a specific operating frequency for power transmission.

3, the power transmission unit 220 includes a multiplexer 221 and a plurality of transmission coils 222 for controlling the output power of the power conversion unit 210 to be transmitted to the transmission coil, that is, And first through n-th transmission coils.

The controller 240 according to the embodiment may transmit power through time division multiplexing for each transmission coil when a plurality of wireless power receivers are connected. For example, if the wireless power transmitter 200 has three wireless power receivers-i. E., The first through third wireless power receivers, respectively, identified through three different transmit coils, i. E. First through third transmit coils , The control unit 240 controls the multiplexer 221 so that power can be transmitted through a specific transmission coil in a specific time slot. At this time, the amount of power transmitted to the corresponding wireless power receiver can be controlled according to the length of the time slot allocated for each transmission coil, but this is only one embodiment. The amplification rate of the amplifier 212 of the wireless power receiver may be controlled to control the transmission power of each wireless power receiver.

The control unit 240 may control the multiplexer 221 so that the detection signals may be sequentially transmitted through the first through n'th transmit coils 222 during the first differential sense signal transmission procedure.

In addition, the control unit 240 transmits a predetermined transmission coil identifier for identifying a signal strength indicator (Signal Strength Indicator) through a transmission coil from the demodulation unit 232 during the first detection signal transmission procedure, Lt; / RTI > received signal strength indicator. In the second sensing signal sending process, the controller 240 controls the multiplexer 221 so that the signal strength indicator can be transmitted only through the transmitting coil (s) You may. In another example, when there are a plurality of transmit coils in which the signal strength indicator is received during the first differential sense signal transmission procedure, the control unit 240 transmits the transmit coil, which receives the signal strength indicator having the largest value, In the procedure, the detection signal may be determined as a transmission coil to be transmitted first, and the multiplexer 221 may be controlled according to the determination result.

The modulator 231 may modulate the control signal generated by the controller 240 and transmit the modulated control signal to the multiplexer 221. Here, the modulation scheme for modulating the control signal includes a frequency shift keying (FSK) modulation scheme, a Manchester coding modulation scheme, a phase shift keying (PSK) modulation scheme, a pulse width modulation scheme, A differential bi-phase modulation method, and the like.

The demodulator 232 can demodulate the detected signal and transmit the demodulated signal to the controller 240 when a signal received through the transmission coil is detected. Here, the demodulated signal may include a signal strength indicator, an error correction (EC) indicator for power control during wireless power transmission, an end of charge indicator (EOC), an overvoltage / overcurrent / overheat indicator, But is not limited to, various status information for identifying the status of the wireless power receiver.

The demodulating unit 232 may identify which of the transmitting coils the demodulated signal is received and may provide the controlling unit 240 with a predetermined transmitting coil identifier corresponding to the identified transmitting coil.

In one example, the wireless power transmitter 200 may obtain the signal strength indicator through in-band communication that uses the same frequency used for wireless power transmission to communicate with the wireless power receiver.

In addition, the wireless power transmitter 200 can transmit wireless power using the transmit coil 222, as well as exchange various information with the wireless power receiver through the transmit coil 222. [ In another example, the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmit coil 222 (i.e., first to n < th > transmit coils) It should be noted that it may also perform in-band communication with the receiver.

In the description of FIG. 3, the wireless power transmitter 200 and the wireless power receiver perform in-band communication. However, the wireless power transmitter 200 and the wireless power receiver use only the frequency band Directional communication through different frequency bands. For example, the near-end bi-directional communication may be any one of low-power Bluetooth communication, RFID communication, UWB communication, and Zigbee communication.

4 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.

4, the wireless power receiver 300 includes a receiving coil 310, a rectifier 320, a DC / DC converter 330, a load 340, a communication unit 360, 370). Here, the communication unit 360 may include at least one of a demodulation unit 361 and a modulation unit 362.

Although the wireless power receiver 300 shown in the example of FIG. 4 is shown as being capable of exchanging information with a wireless power transmitter through in-band communication, this is only one embodiment, and in another embodiment The communication unit 360 may provide short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission.

AC power received through the receiving coil 310 may be transmitted to the rectifying unit 320. The rectifier 320 may convert the AC power to DC power and transmit it to the DC / DC converter 330. The DC / DC converter 330 may convert the intensity of the rectifier output DC power to a specific intensity required by the load 340 and then deliver it to the load 340. Also, the receiving coil 310 may include a plurality of receiving coils (not shown), that is, first through n-th receiving coils. The frequency of the AC power transmitted to each of the reception coils (not shown) according to an embodiment may be different from each other, and another embodiment may include a predetermined frequency controller having a function of adjusting LC resonance characteristics for different reception coils The resonance frequencies of the respective reception coils can be set differently.

The sensing unit 350 may measure the intensity of the DC power output from the rectifier 320 and may provide the measured DC power to the main control unit 370. Alternatively, the sensing unit 350 may measure the intensity of the current applied to the reception coil 310 according to the wireless power reception, and may transmit the measurement result to the main control unit 370.

For example, the sensing unit 350 may measure the internal temperature of the wireless power receiver 300 and provide the measured temperature value to the main control unit 370.

For example, the main controller 370 may compare the measured rectifier output DC power with a predetermined reference value to determine whether an overvoltage is generated. As a result of the determination, if an overvoltage occurs, a predetermined packet indicating that an overvoltage has occurred can be generated and transmitted to the modulator 362. Here, the signal modulated by the modulating unit 362 may be transmitted to the wireless power transmitter through the receiving coil 310 or a separate coil (not shown). The main control unit 370 may determine that the sensing signal is received when the intensity of the rectifier output DC power is equal to or greater than a predetermined reference value. When receiving the sensing signal, the signal intensity indicator corresponding to the sensing signal is received by the modulating unit 362 To be transmitted to the wireless power transmitter. The demodulation unit 361 demodulates the AC power signal between the reception coil 310 and the rectifier 320 or the DC power signal output from the rectifier 320 to identify whether or not the detection signal is received, (370). At this time, the main control unit 370 can control the signal strength indicator corresponding to the detection signal to be transmitted through the modulator 362. [

5 shows a wireless power receiver according to an embodiment.

In the following description of FIG. 5, when the components shown in FIGS. 6 to 14 are described, reference numerals of the components shown in the drawings are specified.

The wireless power receiver according to an embodiment may be the wireless power receiver 20 shown in FIG. 2 or the wireless power receiver 300 shown in FIG.

The wireless power receiver according to the embodiment may be a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) , An electric toothbrush, an electronic tag, a lighting device, a remote control, a small electronic device such as a fishing rod, but is not limited thereto. The wireless power receiver according to the embodiment can be mounted and used in any device capable of charging the battery. For example, the wireless power receiver according to the embodiment may be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.

5, a wireless power receiver according to an embodiment of the present invention may include a main board 501 and a wireless charging coil module 400 disposed on the main board 501. 6) according to the first embodiment, but the wireless charging coil module 400A (FIG. 13) according to the second embodiment also corresponds to the wireless power Receiver.

For example, the main board 501 may be a circuit board provided inside a mobile phone.

And a second connector 503 may be provided on one side of the main board 501. The wireless charging coil module 400 may include a connection board 430. A first connector 437 may be provided on one side of the connection board 430. The connection board 430 may connect the coil part 403 of the wireless charging coil module 400 to the main board 501.

The connecting substrate 430 is referred to as a first substrate, the main substrate 501 is referred to as a second substrate, and the order may be reversed. For example, the connection substrate 430 of the wireless charging coil module 400 may be referred to as a main substrate, and the main substrate 501 may be referred to as a connection substrate. For example, the first connector 503 of the connection board 430 may be referred to as a second connector, and the second connector 503 of the main board 501 may be referred to as a first connector.

The connection board 430 and the main boards 430 and 501 may be boards having circuit patterns built therein. Specifically, the connection substrate 430 is a flexible substrate, and the main substrate 501 may be a rigid substrate, but the present invention is not limited thereto. The rigid substrate may be a conventional printed circuit board as a substrate having little flexibility. Flexibility means performance that can be easily bent and restored to its original state. The flexible substrate is a substrate which is more flexible than the rigid substrate. For example, the flexible substrate may be a substrate made of polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene terephthalate (PEN), polyarylate Glass Fiber Reinforced Plastic).

The first connector 437 of the wireless charging coil module 400 can be fastened to the second connector 503 of the main board 501. By fastening the first connector 437 and the second connector 503 The wireless charging coil module 400 may be electrically connected to the main board 501.

Although the main board 501 has a rectangular shape and the wireless charging coil module 400 has a round shape, the main board 501 and the wireless charging coil module 400 can have various shapes.

The size of the main board 501 may be different from the size of the wireless charging coil module 400 at least. Various circuit elements such as a rectifier 320 and a DC / DC converter 330 as shown in FIG. 3 may be provided in a region where the wireless charging coil module 400 is not disposed in the main board 501. Wireless power After the radio power received by the wireless charging coil module 400 via the second connector 503 and the first connector 437 is rectified by the rectifier 320 (Fig. 4) of the main board 501, DC converter 330 (FIG. 4), and then charged into the battery.

An unexplained reference numeral 409 denotes a film (hereinafter referred to as a second film), and constituent elements such as a coil portion 403 (FIG. 6), shield portions 407, 6) can be protected.

The shielding members 405, 407, 409 (FIG. 8) including the second film 409 may have receiving portions 412, 414 (FIG. 8) formed on one side thereof. The receiving portions 412 and 414 may be openings that penetrate the top and bottom surfaces of the shielding members 405, 407, and 409. The accommodating portions 412 and 414 may be grooves with one side of the shielding members 405, 407 and 409 entering inward. The connecting board 430 is inserted into the receiving portions 412 and 414 of the shielding members 405 and 407 and 409 so that one side of the connecting board 430 is connected to the inner pad 403b May be connected to the outer pad 403c (FIG. 7). The other side of the connection board 430, that is, the first connector 437, may be connected to the second connector 503 of the main board 501. Although not shown, each of the layers constituting the shielding members 405, 407, 409 may also be formed with the receiving portions 412, 414. The receiving portions 412 and 414 formed in the respective layers may correspond to each other. The sizes of the receiving portions 412 and 414 formed in the respective layers may be different, but the present invention is not limited thereto. The connecting board 430 is disposed outside the coil part 403 through the receiving parts 412 and 414 of the shielding members 405, 407 and 409 under the second film 409 as well as the second film 409 . At this time, part or all of the connection board 430 may overlap with the coil part 403. The connection substrate 430 is inserted into the second adhesive member 413 or the like on the components disposed under the coil part 403, for example, the first film 401, the third film 411, The receiving portions 412 and 414 may not be formed.

The connection board 430 includes a first connection portion 431 that traverses the coil portion 403 along the first direction, a second connection portion 431 that extends from the first connection portion 431 along a second direction different from the first direction, And a third connection part 435 extending from the second connection part 433 in the first direction and disposed in parallel with the first connection part 431. [ The second direction may be a direction perpendicular to the first direction, but is not limited thereto. The second connection portion 433 may extend along a direction away from the first connection portion 431. [ The third connection portion 435 may be disposed to be spaced apart from the first connection portion 431. The first to third connection portions 431, 433, and 435 may be integrally formed. That is, the first connection part 431 may be integrally formed with the second connection part 433, and the third connection part 435 may be formed integrally with the second connection part 433. [ The first to third connection portions 431, 433, and 435 may be positioned on the same plane. The first and second connection portions 431 and 432 of the first to third connection portions 431 and 433 and 435 are connected to the inner pad 403b and the outer pad 403c of the coil portion 403, . Since the third connection portion 435 is not fixed until it is fastened to the main board 501, it can be bent in any direction.

The third connection portion 435 may include a bent portion 434. For example, the bent portion 434 may extend in the horizontal direction toward the inner pad 403b of the coil portion 403, which extends vertically from one side of the second connection portion 433. For example, the horizontal direction may be opposite to the first direction. In this case, the bent portion 434 may be defined as a region including a point where the vertical and horizontal meet at the third connecting portion 435 and the periphery thereof. The third connection part 435 is extended toward the inside of the coil part 403 through the bent part 434 so that the wireless charging coil module 400 and the wireless charging device capable of mass- have. Specifically, an automated cutting process can be made possible.

The first connection portion 431 and the second connection portion 433 of the connection board 430 can be inserted into the receiving portions 412 and 414 of the shielding members 405, 407, and 409. One end of the third connection part 435 is connected to the second connection part 433 and the other end of the third connection part 435 is connected to the first connector 503 for electrical connection with the second connector 503 of the main board 501. [ (437) may be provided.

Alternatively, the connection portion provided with the first connector 437 may be referred to as a fourth connection portion. In this case, the fourth connection portion may be provided at an end point extending in the horizontal direction from the third connection portion 435. One side of the third connection part may be bent at the third connection part 435 and extended, for example, along the second direction. The fourth connector may include a first connector 437. The first connector 437 may be disposed at an end point of the third connection part 435 and an area extending from the end point of the third connection part 435 along the second direction. The fourth connection part may extend from the third connection part 435 in a direction away from the first connection part 431, that is, along the second direction.

The connection board 430 is divided into the first to third connection portions 431, 433 and 435 or the first to fourth connection portions, A bridge function for enabling electrical connection to the outside of the part 403 and a flexible function for electrically connecting the coil part 403 and the main board 501 can be realized at the same time.

The first connection part 431 and the third connection part 435 of the connection substrate 430 are extended from the second connection part 433 toward the inside of the coil part 403, A wireless charging coil module and a wireless charging device can be provided. Specifically, an automated cutting process can be made possible. That is, the coil portion 403 and the shielding members 405, 407 and 409 are disposed on the first film 401 and the connecting substrate 430 is fixed to the receiving portions 412, When the first film 401 and the shielding members 405, 407 and 409 are cut so as to have a predetermined shape, for example, a circular shape, the connecting substrate 430, The first connection portion 431 and the third connection portion 435 of the second connection portion 433 extend from the second connection portion 433 toward the inside of the coil portion 403. If the first or third connection portions 431 and 435 of the connection substrate 430 are disposed outside the cutting perforations, the first or third connection portions 431 and 435 of the connection substrate 430 are cut by the cutting process, . This form is a limiting factor that makes automated production processes impossible, and has been an impediment to improving productivity and reducing process costs.

The first connection part 431 may be formed long along the direction crossing the coil part 403. For example, the first connection portion 431 may be disposed long along the direction perpendicular to the coiled coils of the coil portion 403. The length of the first connection portion 431 may be greater than the length between the inner pad 403b and the outer pad 403c of the coil portion 403. [

The third connection portion 435 may be spaced apart from the first connection portion 431 and disposed in parallel with the first connection portion 431. In this case, the second connection portion 433 can connect the end of the first connection portion 431 and the end of the third connection portion 435.

One side of the first connection part 431 is connected to the inner pad 403b of the coil part 403. One side of the second connection part 433 is connected to the outer pad 403c of the coil part 403. [ But it is not limited thereto. The inner pad 403b of the coil portion 403 may be vertically overlapped with one side region of the first connection portion 41. [ The outer pad 403c of the coil portion 403 may be vertically overlapped with one side region of the second connection portion 433. [ The first and second connection portions 431 and 433 are connected to the inner pad 403b and the outer pad 403c of the coil portion 403 to connect the first and second connection portions 431 and 433 of the connection substrate 430, Can be fixed to the coil portion 403.

The third connector 435 may be bent so that the first connector 437 is connected to the second connector 503 of the main board 501. That is, since the second connection portion 433 of the connection substrate 430 is fixed, the third connection portion 435 can be rotated with respect to the second connection portion 433. The third connection portion 435 of the connection board 430 can be rotated from the inside of the coil portion 403 toward the outside of the coil portion 403. [ For example, the third connection portion 435 of the connection board 430 may be rotated 180 ° with respect to the second connection portion 433. The first connector 437 may be disposed on the upper surface of the third connection portion 435.

When the third connector 435 is rotated with respect to the second connector 433, the first connector 437 is located on the lower surface of the third connector 435 and is disposed on the upper surface of the main board 501 The first connector 437 of the connection board 430 may be connected to the second connector 503 of the main board 501 after being faced to face the second connector 503. Specifically, the third connection portion 435 may be rotated about the axis of the second connection portion 433 in the longitudinal direction, that is, the second direction. An end point of the third connection portion 435 is located on the same plane as the first connection portion 431 and is located on the outer side of the coil portion 403 when rotated about the axis of the second connection portion 433 in the second direction Lt; / RTI > The second connector 503 of the main board 501 is disposed outside the coil part 403 so that the end point of the rotated third connection part 435, that is, the first connector 437, The second connector 503 of the second connector 503 can be fastened.

Although not shown, the first connector 437 of the connection board 430 may be detached from the second connector 503 of the main board 501. For example, the first connector 437 of the connection board 430 is a recessed female connector, and the second connector 503 of the main board 501 may be a male connector protruding to the outside, but the present invention is not limited thereto. The male connector 503 of the main board 501 can be inserted into the female connector 437 of the connecting board 430. [ A fixing pin may be provided around the male connector 503 of the main board 501 so that the male connector 503 of the main board 501 is not arbitrarily detached from the female connector 437 of the connecting board 430. [

The first connection portion 431 and the third connection portion 435 may have different lengths from each other. For example, the length of the first connection part 431 may be longer than the length of the third connection part 435. The third connection part 431 is connected to the first connection part 435 of the third connection part 435 and the third connection part 435 is connected to the second connection part 435 of the third connection part 435. The first connection part 431 depends on the length between the inner pad 403b and the outer pad 403c of the coil part 403, And the distance between the first connector 437 and the second connector 503 of the main board 501. [ The length of the first connection part 431 can be reduced as the length between the inner pad 403b and the outer pad 403c of the coil part 403 is reduced. The length of the third connection part 435 can be reduced as the distance between the first connector 437 of the third connection part 435 and the second connector 503 of the main board 501 is reduced.

According to the embodiment, the first connection portion 431 and the second connection portion 433 may have different thicknesses from each other.

The thickness of the first connection portion 431 may be smaller than the thickness of the second connection portion 433. [

According to the embodiment, the thickness of the first connection portion 431 and the thickness of the third connection portion 435 may be substantially the same.

The thickness of the first connection portion 431 and the thickness of the edge of the third connection portion 435 may be the same.

According to the embodiment, the thickness of the first connection portion 431 may be different from the thickness of the central region of the third connection portion 435.

The thickness of the first connection portion 431 may be smaller than the thickness of the central region of the third connection portion 435. [

According to the embodiment, the first connection portion 431 and the second connection portion 433 may have different widths from each other.

According to an embodiment, the width of the first connection portion 431 may be smaller than the width of the second connection portion 433.

According to the embodiment, the first connection portion 431 and the third connection portion 435 may have different widths from each other.

According to an embodiment, the width of the first connection portion 431 may be smaller than the width of the third connection portion 435.

5, reference numerals 505a and 505b denote first and second connection terminals. When the first connector 437 of the connection board 430 is connected to the second connector 503 of the main board 501, And may be connected to the first and second contact portions 439a and 439b of the first connector 437 of the substrate 430. [

Hereinafter, the wireless charging coil module 400 according to the first embodiment will be described in detail with reference to FIGS. 6 to 10. FIG.

FIG. 6 is a perspective view illustrating a wireless charging coil module according to the first embodiment, FIG. 7 is a bottom view of the wireless charging coil module according to the first embodiment, and FIG. And FIG. 5 is a perspective view illustrating a shielding member disposed on the coil part in the wireless charging coil module according to the first embodiment of the present invention. FIG. 9 is a view showing a forming position of a receiving portion of a shielding member disposed on the coil portion in the wireless charging coil module according to the first embodiment, and FIG. 10 is a view showing a connecting substrate of the wireless charging coil module according to the first embodiment It is a perspective view.

Referring to FIGS. 5 to 10, according to the wireless charging coil module 400 according to the first embodiment, a first film 401 may be provided. The first film 401 can be used to protect or support the coil part 403. [ For example, the first film 401 may be a protective film or a supporting film. Or the first film 401 may be a protective substrate or a supporting substrate. The first film 401 may include, but is not limited to, a transparent polyimide (PI) resin.

According to the wireless charging coil module 400 according to the first embodiment, the coil portion 403 can be provided. The coil portion 403 may be disposed on the upper surface of the first film 401. The coil part 403 may be formed of a metal sticker antenna (MSA) manufactured by the rolling process. For example, MSA copper (Cu). The coil portion 403 may be a single layer or a multi-layered structure.

Specifically, after the metal layer formed by the rolling process is coated on the first film 401, an etching process is performed on the metal layer to form a plurality of wound coils 403a, first pads 403b, A coil portion 403 composed of a pad 403c may be formed. The thickness of the coil portion 403 may be 127 mu m or less. The first pad 403b is called an inner pad because it is located inside the coil part 403 and the second pad 403c is located outside the coil part 403 and may be referred to as an outer pad.

The plurality of coils 403a are formed in a spiral shape, and a hollow portion 403d in which the coil 403a is not formed may be located at the center thereof. The hollow portion 403d may be an empty space. The width of the first and second pads 403b and 403c may be at least greater than the width of the coil 403a. That is, since the first and second pads 403b and 403c are formed to be large in size, connection of the first and second connection members 446 and 447 of the connection substrate 430 can be facilitated later. In addition, since the first and second pads 403b and 403c are formed to have a large size, the contact resistance between the first and second pads 403b and 403c can be reduced to reduce the electrical loss.

Since the coil part 403 is formed by such a processing method, a separate bonding member for attaching the coil part 403 to the first film 401 is not required, so that the manufacturing cost can be reduced and the manufacturing process can be simplified .

According to the wireless charging coil module 400 according to the first embodiment, shielding members 405, 407 and 409 can be provided. Shielding members 405, 407, and 409 may be disposed on the coil section 403. [ The shielding members 405, 407 and 409 may include a first adhesive member 405, a shielding member 407 and a second film 409. The shielding member may be two or less layers or four or more layers. Specifically, when the first adhesive member 405 is disposed on the first film 401, the shielding member 407 is disposed on the first adhesive member 405, the second film 409 is placed on the shielding member 407, Lt; / RTI > The coil portion 403 may be disposed between the first film 401 and the first adhesive member 405. [ The size of the first film 401 and / or the size of the first adhesive member 405 may be larger than the size of the coil part 403. [ The shielding member 407 and the first film 401 can be attached by the first adhesive member 405. [ The first film 401 and the shielding material 407 can be attached to each other by the first adhesive member 405 outside the coil part 403. [ Thus, the coil part 403 is surrounded by the first film 401 and the shielding material 407 and is not exposed to the outside.

The first adhesive member 405 allows the shielding material 407 to be attached to the first film 401 and / or the coil part 403. [ The shielding member 407 can prevent the electromagnetic field generated, formed or induced by the coil 403a from affecting the electronic component. An EMB (Electro-Magnetic Booster) shielding material may be used as the shielding material 407, but the present invention is not limited thereto. EMB shielding materials can be made of amorphous and nanocrystalline ribbon materials. The thickness of the shielding material 407 may be at least 73 탆. For example, the thickness of the shielding material 407 may be 73 탆. As described above, since the shielding performance is increased as the EMB shielding material is used, the thickness of the shielding material 407 can be reduced.

The second film 409 may serve to protect the shield member 407 and the coil part 403. [ The second film 409 may be made of black polyethylene terephthalate (PET) resin, but the present invention is not limited thereto.

The first adhesive member 405, the shielding member 407 and the second film 409 may include the receiving portions 412 and 414. [ The receiving portions 412 and 414 may be passages through which the connection substrate 430 is inserted. The first adhesive member 405, the shielding member 407 and the second film 409 may include a first accommodating portion 412 and a second accommodating portion 414. The first and second receiving portions 412 and 414 may have a shape corresponding to the first and second connecting portions 431 and 433 of the connecting board 430.

The first accommodating portion 412 is located between the inner pad 403b and the outer pad 403c of the coil portion 403 including the inner pad 403b and the outer pad 403c of the coil portion 403, The second accommodating portion 414 can communicate with the first accommodating portion 412 from the outside of the coil portion 403. Therefore, the shielding members 405, 407, 409 are arranged such that a portion of the coil 403a of the coil portion 403 disposed below the shielding members 405, 407, 409 through the first accommodating portion 412 as viewed from above is exposed .

The first accommodating portion 412 is formed along the first direction from the inner pad 403b of the coil portion 403 toward the outer pad 403c and the second accommodating portion 414 is formed along the second direction As shown in FIG. The first receiving portion 412 has a shape corresponding to the shape of the first connecting portion 431 of the connecting substrate 430 and the second receiving portion 414 has a shape corresponding to the shape of the second connecting portion 433 And the like. That is, the first and second receiving portions 412 and 414 may have shapes corresponding to the shapes of the first and second connecting portions 431 and 433 of the connecting substrate 430. The size of the first receiving portion 412 may be larger than the size of the first connecting portion 431 of the connecting substrate 430, but the present invention is not limited thereto. The size of the second accommodating portion 414 may be larger than the size of the second connecting portion 433 of the connecting substrate 430, but the present invention is not limited thereto. The first connection part 431 of the connection board 430 is connected to the inner pad 403b of the coil part 403 and the second connection part 433 of the connection board 430 is connected to the outer pad of the coil part 403 The first accommodating portion 412 can be defined as an area from the inner pad 403b of the coil portion 403 to the outer side of the coil 403. [ The inner pad 403b and the coil 403 of the coil portion 403 are exposed by the first accommodating portion 412 and the outer pad 403c of the coil portion 403 is exposed in the second accommodating portion 414. [ ) Can be exposed. That is, the coil 403a may be located in the first accommodating portion 412 and not in the second accommodating portion 414. [ According to the first embodiment, the coil 403a can be vertically overlapped with the first accommodating portion 412. [ According to the first embodiment, the coil 403a may not overlap the second accommodating portion 414. According to the first embodiment, the outer pad 403c may be vertically overlapped with the first accommodating portion 412. [

The receiving portions corresponding to the third connecting portions 435 of the connecting board 430 may not be formed in the shielding members 405, Accordingly, when the connecting substrate 430 is inserted into the receiving portions 412 and 414, the third connecting portion 435 of the connecting substrate 430 is disposed on the shielding members 405, 407 and 409, It may be possible. In this case, the third connection portion 435 of the connection substrate 430 is not in contact with the coil portion 403. [ When the connecting substrate 430 is fastened to the main substrate 501, the third connecting portion 435 of the connecting substrate 430 is no longer present on the shielding members 405, 407 and 409. That is, when the connection board 430 is fastened to the main board 501, the third connection part 435 of the connection board 430 is rotated about the second connection part 433, The first connector 437 provided in the connection part 435 may be electrically connected to the second connector 503 of the main board 501. [ Therefore, when the connection board 430 is fastened to the main board 501, the second connector 435 may be disposed on the second connector 503 of the main board 501.

The sizes of the receiving portions 412 and 414 of the first adhesive member 405, the shielding member 407 and the second film 409 may be different. The width D1 of the first receiving portion 412 of the shielding member 407 may be larger than the width D1 of the first receiving portion 412 of the first adhesive member 405 or the second film 409 have. The width D2 of the second accommodating portion 414 of the shielding material 407 may be larger than the width D2 of the first accommodating portion 414 of the first adhesive material 405 or the second film 409 have. Therefore, the shielding member 407 can be protected by the first adhesive member 405 and the second film 409 without being exposed to the outside due to the receptacles 412 and 414.

According to the wireless charging coil module 400 according to the first embodiment, a connection board 430 can be provided. The connection board 430 can be inserted into the receiving portions 412 and 414 of the shielding members 405, 407 and 409. [ The connecting board 430 may be electrically connected to the coil portion 403 in the receiving portions 412 and 414 of the shielding members 405, 407 and 409 and electrically connected to the main board 501.

Specifically, the connection board 430 includes a second connection portion 433 formed along the second direction, a first connection portion 431 bent from one end of the second connection portion 433 and extending along the first direction, And a third connection part 435 bent from the other end of the second connection part 433 and extending along the first direction. The first and second connection portions 431 and 433 may have shapes corresponding to the shapes of the receiving portions 412 and 414 of the shielding members 405 and 407 409. The width of the first connection portion 431 and the width of the third connection portion 435 may be the same, but the invention is not limited thereto.

The first and second connection portions 431 and 433 may be arranged in parallel or parallel to each other, but the present invention is not limited thereto. The first connection portion 431 of the connection substrate 430 is inserted into the first accommodation portion 412 of the shielding members 405, 407 and 409 and the second connection portion 433 of the connection substrate 430 is inserted into the shielding member 405, 407, and 409. The second receiving portion 414 of the second receiving portion 414 may be inserted into the second receiving portion 414 of the second receiving portion 405, A part of the lower surface of the first connecting portion 431 of the connecting board 430 inserted into the first receiving portion 412 of the shielding members 405, 407 and 409 may be connected to the inner pad 403b of the coil portion 403. [ have. A part of the lower surface of the second connection portion 433 of the connection board 430 inserted into the second accommodation portion 414 of the shielding members 405, 407 and 409 may be connected to the outer pad 403c of the coil portion 403. [ have. The first connector 437 provided on the third connection part 435 of the connection board 430 is connected to the third connection part 435 of the connection board 430 to be connected to the second connector 503 of the main board 501, The third connecting portion 435 of the connecting board 430 does not need to be inserted into the receiving portions 412 and 414 of the shielding members 405, 407, and 409 since the second connecting portion 433 is rotated with respect to the second connecting portion 433.

FIG. 11 is a plan view schematically illustrating the inside of a connection board of the wireless charging coil module according to the first embodiment, and FIGS. 12a to 12e are sectional views of the connection board of the wireless charging coil module of FIG.

5 to 12, the larger the size of the first and second contact portions 439a and 439b for forming the first connector 437, the smaller the contact resistance. Therefore, the first and second contact portions 439a, The first and second contact portions 439a and 439b should be spaced from each other to prevent electrical shorting between the first and second contact portions 439a and 439b. The width L1 of the portion of the third connection portion 435 of the connection substrate 430 where the first connector 437 is located may be larger than the width L2 of the other region. The portion where the first connector 437 is located on the connection board 431 may be bent from the end of the third connection portion 435 and extend in a direction away from the first connection portion 431 or in a second direction. The portion where the first connector 437 is located and the extended region may be referred to as a fourth connecting portion by being separated from the third connecting portion 435.

The first and second contact portions 439a and 439b of the first connector 437 may be disposed on a portion of the upper surface of the third connection portion 435. [ The first and second contacts 439a and 439b of the first connector 437 may be connected to the first and second conductive lines 442 and 444, respectively. The first and second contact portions 439a and 439b and the first and second conductive lines 442 and 444 may be embedded in the connection substrate 430. One side of the first and second conductive lines 442 and 444 is connected to the first and second contact portions 439a and 439b and the other side of the first and second conductive lines 442 and 444 is connected to the side of the coil portion 403 And may be connected to the inner pad 403b and the outer pad 403c. The first and second conductive lines 442 and 444 and the first and second contact portions 439a and 439b may be integrally formed and formed of the same metal material. For example, the first and second conductive lines 442 and 444 and the first and second contact portions 439a and 439b may be formed of copper (Cu), but the present invention is not limited thereto.

The first and second conductive lines 442 and 444 can be connected to the inner pad 403b and the outer pad 403c of the coil portion 403 via the first and second connecting members 446 and 447 . The first and second connecting members 446 and 447 may be a soldering paste comprising tin (Sn), nickel (Ni), gold (Au), and / or a mixture thereof.

The first conductive line 442 may be disposed in the first connection portion 431, the second connection portion 433, and the third connection portion 435. The second conductive line 444 may be disposed in the second connection part 433 and the third connection part 435. In other words, the second conductive line 444 is not disposed in the first connection portion 431. [ Accordingly, only the first conductive line 442 may be disposed in the first connection portion 431, and both the first and second conductive lines 442 and 444 may be disposed in the second and third connection portions 433 and 435.

The first and second conductive lines 442 and 444 may be disposed in different layers from each other. A first conductive line 442 may be disposed on the first passivation layer 441 and an insulating layer 443 may be disposed on the first conductive line 442. The second conductive line 444 may be disposed on the insulating layer 443 and the second protective layer 445 may be disposed on the second conductive line 444. [ Other components may be added, or some of these components may be omitted.

The first and second conductive lines 442 and 444 may be formed on both sides of the insulating layer 443 or on the first and second protective layers 441 and 445 using an electroplating method. The first conductive line 442 may be surrounded by the first passivation layer 441 and the insulating layer 443. The second conductive line 444 may be surrounded by an insulating layer 443 and a second passivation layer 445.

The first and second conductive lines 442 and 444 may be copper (Cu) plated copper layers. For example, the first and second conductive lines 442 and 444 may be composed of two layers, each having a Cu layer of 0.035 mm and a Cu plating of 0.01 mm.

According to the embodiment, the first conductive line 442 may have a copper layer formed on the insulating layer 443, and a copper plating layer formed on the copper layer. The second conductive line 444 may have a copper layer formed under the insulating layer 443 in a direction opposite to the first conductive line 442 and a copper plating layer formed under the copper layer.

The first protective layer 441, the insulating layer 443, and the second protective layer 445 may be formed of a material having excellent bending properties. The first protective layer 441, the insulating layer 443, and the second protective layer 445 may be formed of a material having excellent insulation and strength.

The first protective layer 441, the insulating layer 443, and / or the second protective layer 445 may be formed of the same material. For example, the first protective layer 441, the insulating layer 443, and / or the second protective layer 445 may include a polyimide resin. As another example, the first protective layer 441, the insulating layer 443, and / or the second protective layer 445 may be formed of materials different from each other. For example, the insulating layer 443 may be formed of a material excellent in insulation line, and the first and / or second protective layers 441 and 445 may be formed of a material having excellent strength.

The thickness of each component of the connection board 430 is shown in Table 1.

The components of the connection substrate 430	Thickness [mm]
The first protective layer 441,	0.0125
The first conductive line 442,	0.035
In the insulating layer 443,	0.0125
The second conductive line 444,	0.035
The second protective layer 445,	0.0125

As shown in FIGS. 10 and 11, only the first conductive line 442 may be disposed in the first connection portion 431 of the connection substrate 430. The first and second conductive lines 442 and 444 may be disposed on the second and third connection portions 433 and 435 of the connection substrate 430. Since the first and second conductive lines 442 and 444 are disposed on different layers from each other, the first and second conductive lines 442 and 444 may overlap each other or may be spaced from each other along the horizontal direction, ), In particular, the width of the third connecting portion 435 can be reduced, and more excellent warping characteristics can be ensured. The insulating layer 443 allows the first and second conductive lines 442 and 444 to be spaced apart from each other.

Since the first and second conductive lines 442 and 444 are overlapped with each other in the second connection portion 433, the thickness becomes thick and the formation of the bent portion is difficult. Accordingly, the first and second conductive lines 442 and 444 are not overlapped with each other as in the third connecting portion 435, and the bending portion 434 can be formed with a reduced thickness. As the thickness is reduced and the bending portion 434 is formed as described above, the bending characteristic of the third connecting portion 435 can be increased. Therefore, the second receiving portion 414 may be formed to extend in the second direction in the first receiving portion 412 formed in the first direction. The bending portion 434 can be formed in the third connection portion 435 through the second accommodating portion 414, thereby simplifying the process and reducing the material cost.

The arrangement relationship of the first and second conductive lines 442 and 444 in the first to third connection portions 431, 433 and 435 of the connection substrate 430 will be described in detail below.

The second conductive line 444 may be electrically connected to the inner terminal of the coil part 403 through the end of the first connection part 431 of the connection board 430 as shown in FIG. The second conductive line 444 disposed on the first connection portion 431 of the connection substrate 430 may be electrically connected to the inner terminal of the coil portion 403 using the second connection member 446. [ The second connection member 446 may be a soldering paste comprising tin (Sn), nickel (Ni), gold (Au) and / or a mixture thereof.

The first conductive line 442 is not disposed in the first connection portion 431 of the connection substrate 430 because the first conductive line 442 is connected to the outer terminal of the coil portion 403. [ The first conductive line 442 is not disposed below the second conductive line 444 disposed between the insulating layer 443 and the second passivation layer 445. [ In this case, a via 453 (hereinafter referred to as a second via) in which the first protective layer 441 and the insulating layer 443 are partially removed is formed at the end of the first connection portion 431 of the connection substrate 430 So that a part of the lower surface of the second conductive line 444 can be exposed to the outside. After the solder paste is filled in the exposed second vias 453, the solder paste is cured by the laser soldering process so that the second conductive line 444 is electrically connected to the inner side of the coil portion 403 Terminals and may be physically fixed. A portion of the second connection member 446 is disposed at least in the second via 453 and the other portion of the second connection member 446 protrudes from the second via 453 to the inner terminal of the coil portion 403 Can be connected.

12B, only the second conductive line 444 may be disposed in the first connection portion 431 of the connection substrate 430. [ A second conductive line 444 is disposed between the insulating layer 443 and the second protective layer 445 and the second conductive line 444 is electrically connected to the first connection portion 431 of the connection substrate 430 in the longitudinal direction As shown in FIG. Since the second conductive line 444 is surrounded by the insulating layer 443 and the second protective layer 445, the second conductive line 444 is not exposed to the outside.

The first conductive line 442 may be electrically connected to the outer terminal of the coil portion 403 through one side of the second connection portion 433 of the connection board 430 as shown in FIG. The first conductive line 442 disposed in the second connection portion 433 of the connection substrate 430 may be electrically connected to the outer terminal of the coil portion 403 using the first connection member 447. [ The first connecting member 447 may be a soldering paste including tin (Sn), nickel (Ni), gold (Au), and / or a mixture thereof.

A first conductive line 442 is disposed between the first protective layer 441 and the insulating layer 443 and a second conductive line 444 is disposed between the insulating layer 443 and the second protective layer 445 . The first conductive line 442 and the second conductive line 444 may be vertically overlapped. A portion of the lower surface of the first conductive line 442 may be exposed to the outside by forming a via 451 in which the first protective layer 441 is partially removed. After the solder paste is filled in the exposed first vias 451, the first connection line 447, in which the soldering paste is hardened by the laser soldering process, is electrically connected to the outside of the coil portion 403 Terminals and may be physically fixed. A portion of the first connection member 447 is disposed at least in the first via 451 and the other portion of the first connection member 447 protrudes from the first via 451 to the inner terminal of the coil portion 403 Can be connected.

The first conductive line 442 and the second conductive line 444 may be disposed on the third connection portion 435 of the connection substrate 430. [ The first conductive line 442 and the second conductive line 444 may be spaced apart from each other in the horizontal direction. The first conductive line 442 and the second conductive line 444 may be overlapped in the horizontal direction. Since the first conductive line 442 and the second conductive line 444 are formed of a metal material, the metal material may be rigid and poor in characteristics. The third connection part 435 of the connection board 430 is rotated about the second connection part 433 and is then fastened to the second connector 503 of the main board 501 so that the bending property should be excellent . That is, the third connection portion 435 of the connection substrate 430 should have excellent flexibility. Therefore, in the first embodiment, the first conductive line 442 and the second conductive line 444 are arranged to be spaced apart from each other along the horizontal direction in the third connection portion 435 of the connection substrate 430, The line 442 and the second conductive line 444 are prevented from vertically overlapping each other, whereby excellent flexibility can be secured.

The upper surface of the first protective layer 441 may be defined as a first protective layer region, a second protective layer region, and a third protective layer region between the first and second protective layer regions. In this case, the first conductive line 442 may be disposed on the first protective layer region of the first protective layer 441. An insulating layer 443 may be disposed on the first passivation layer 441 and the first conductive line 442. The second conductive line 444 may be disposed on the insulating layer 443 corresponding to the second protective layer region of the first protective layer 441. [ In this case, the first conductive line 442 and the second conductive line 444 may be spaced apart from each other along the horizontal direction by a width of the third protective layer region of the first protective layer 441. The flexibility of the third connection part 435 of the connection substrate 430 can be changed according to the distance between the first conductive line 442 and the second conductive line 444. For example, the greater the distance between the first conductive line 442 and the second conductive line 444, the better the flexibility, but the width of the third connection part 435 of the connection board 430 can also be increased. The first conductive line 442 and the second conductive line 444 may be formed so as to secure flexibility of the third connection portion 435 of the connection substrate 430 and to prevent the width of the third connection portion 435 of the connection substrate 430 from increasing. ) Can be optimized. For example, the separation distance between the first conductive line 442 and the second conductive line 444 may be between 0.1 mm and 2.5 mm. More specifically, the separation distance between the first conductive line 442 and the second conductive line 444 may be between 0.1 mm and 1.2 mm.

The second passivation layer 445 may be disposed on the insulating layer 443 and the second conductive line 444. [

The first connector 437 may be provided at the end of the third connection part 435 of the connection board 430, that is, the fourth connection part, as shown in FIG. 12E. The first connector 437 may include a first contact portion 439a and a second contact portion 439b. The first and second contact portions 439a and 439b are formed on the first and second conductive lines 442 and 444 to maximize the contact area when the main board 501 is connected to the second connector 503, Lt; / RTI > The first contact portion 439a and the second contact portion 439b may be disposed so as to be spaced apart from each other to prevent electrical shorting.

The first and second contact portions 439a and 439b may be formed of the same metal material as the first and second conductive lines 442 and 444. For example, the first and second conductive lines 442 and 444 and the first and second contact portions 439a and 439b may be formed of copper (Cu). The first contact portion 439a may extend from the first conductive line 442 and the second contact portion 439b may extend from the second conductive line 444. [

The first and second contact portions 439a and 439b may be exposed to the outside in order to be electrically connected to the second connector 503 of the main board 501. [ A part of the upper surface of the first contact portion 439a may be exposed to the outside by the third via 455 in which the second protective layer 445 and the insulating layer 443 are partially removed. For example, a portion of the upper surface of the second contact portion 439b may be exposed to the outside by the fourth via 457 from which the second protective layer 445 is partially removed.

When the first connector 437 of the connection board 430 and the second connector 503 of the main board 501 are fastened together, the first contact 439a of the first connector 437 of the connection board 430 Is electrically connected to the first connection terminal 505a of the second connector 503 of the main board 501 and the second contact portion 439b of the first connector 437 of the connection board 430, May be electrically connected to the second connection terminal 505b (FIG. 5) of the second connector 503 of the main board 501.

The first via 451 and the third via 455 are electrically connected to each other through a first connection member 447 and a first contact portion 439a in which a copper wire is formed all over the insulating layer 443 in the connection substrate 430, As shown in FIG.

The second vias 453 and the fourth vias 457 are electrically connected to the second connection members 446 and the second contacts 439a through which the copper wires are formed in the connection substrate 430 with the insulating layer 443 therebetween, As shown in FIG.

The first and second contact portions 439a and 439b and the first and second connection members 447 and 446 may be exposed on different surfaces of the connection substrate 430. [ For example, the first and second connection members 447 and 446 may be exposed on the lower surface of the connection substrate 430, and the first and second contact portions 439a and 439b may be exposed on the connection substrate 430.

The first conductive line 442 is disposed between the first protective layer 441 and the insulating layer 443 and the second conductive line 444 is disposed between the insulating layer 443 and the second protective layer 445, The first conductive line 442 and the second conductive line 444 may be interchanged with each other. The second conductive line 444 is disposed between the first protective layer 441 and the insulating layer 443 and the first conductive line 442 is disposed between the insulating layer 443 and the second protective layer 445 As shown in FIG.

12B and 12D, the width of the first connection portion 431 of the connection substrate 430 and the width of the third connection portion 435 of the connection substrate 430 may be the same as each other. Do not. The first and second conductive lines 442 and 444 are disposed on different layers from each other in the third connection portion 435 of the connection substrate 430 but the third connection portion 435 of the connection substrate 430 The first and second conductive lines 442 and 444 may be arranged to be spaced apart from each other along the horizontal direction in order to secure flexibility. In contrast, only the second conductive line 444 may be disposed on the first connection part 431 of the connection substrate 430. Therefore, the first and second conductive lines 442 and 444 must be disposed in the third connection portion 435 of the connection board 430 so as to be spaced apart from each other along the horizontal direction. Therefore, the first and second conductive lines 442 and 444 ) Is relatively narrow. The width of the second conductive line 444 is substantially equal to the width of the first connection part 431 of the connection substrate 430 because only the second conductive line 444 is disposed in the first connection part 431 of the connection substrate 430, Of the width of the opening.

The width of the second conductive line 444 of the first connection portion 431 of the connection board 430 and the width of the second conductive line 444 of the second and third connection portions 433 and 435 are different. The width P1 of the second conductive line 444 of the first connection portion 431 of the connection substrate 430 is set to be greater than the width P1 of the second conductive line 444 of the second and third connection portions 433 and 435 P2). The width P1 of the second conductive line 444 of the first connection portion 431 of the connection substrate 430 is larger than the width P2 of the second conductive line 444 of the third connection portion 435 of the connection substrate 430 , The sectional area of the second conductive line 444 is increased and the line resistance can be drastically reduced. The width P3 of the first conductive line 442 disposed on the third connection portion 435 of the connection substrate 430 is greater than the width P3 of the second conductive line 432 disposed on the third connection portion 435 of the connection substrate 430 444, but it is not limited thereto. The width P3 of the first conductive line 442 disposed at the third connection portion 435 of the connection substrate 430 is greater than the width P3 of the second conductive line 444 disposed at the first connection portion 431 of the connection substrate 430, The width P1 may be smaller than the width P1. The width P3 of the first conductive line 442 disposed on the third connection portion 435 of the connection substrate 430 is greater than the width P3 of the first conductive line 442 disposed on the second connection portion 433 of the connection substrate 430. [ But it is not limited thereto. The width P2 of the second conductive line 444 disposed on the third connection portion 435 of the connection substrate 430 is greater than the width of the second conductive line 444 disposed on the second connection portion 433 of the connection substrate 430. [ But it is not limited thereto.

The width P1 of the first conductive line 442 of the first connection portion 431 according to the first embodiment is larger than the width of the first conductive line 442 and the second conductive line 444 of the third connection portion 435 (P2, P3).

 The width P1 of the first conductive line 442 of the first connection part 431 according to the first embodiment may be 2 mm. The widths P2 and P3 of the first conductive line 442 and the second conductive line 444 of the third connection part 435 according to the embodiment may be 1 mm.

Referring again to FIG. 1, according to the wireless charging coil module 400 according to the first embodiment, a third film 411 may be provided. The third film 411 may be formed of a polyimide resin. The third film 411 may be attached to the first film 401 using the second adhesive member 413. [ That is, the second adhesive member 413 allows the third film 411 to adhere to the first film 401.

The third film 411 can serve to protect the second adhesive member 413 from maintaining adhesiveness.

The third film 411 can be removed so that it can be fixed by the second adhesive member 413 when the wireless charging coil module 400 is placed on a terminal or the like.

The third film 411 and the second adhesive member 413 may optionally be omitted.

According to the first embodiment, although the thickness of the coil portion 403 is relatively thick, the resistance or heat generation is reduced, so that it is not necessary to provide a separate heat radiation member.

According to the first embodiment, since the EMB shielding material is used in a relatively thin thickness, the shielding effect is excellent and the thickness is reduced.

FIG. 13 is a perspective view illustrating a wireless charging coil module according to a second embodiment, and FIG. 14 is a perspective view illustrating a heat dissipating member disposed on a shielding member in the wireless charging coil module according to the second embodiment.

The second embodiment is the same as the first embodiment except that the heat radiating members 415, 417 and 419 are added. In the second embodiment, constituent elements having the same function or shape as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

13 and 14, according to the wireless charging coil module 400A according to the second embodiment, the heat radiation members 415, 417 and 419 can be provided.

Specifically, the coil portion 403 is disposed on the first film 401, and the shielding members 405, 407, and 409 can be disposed on the coil portion 403. [ The shielding members 405, 407 and 409 include a first adhesive member 405 disposed on the coil portion 403, a shielding member 407 disposed on the first adhesive member 405, And a second film 409 disposed thereon.

The second film 409 may be attached via the second adhesive member 413 under the first film 401. [

The heat radiation members 415, 417, and 419 may be disposed on the shield members 405, 407, and 409. [ The heat dissipating members 415, 417 and 419 are disposed on the shielding members 405, 407 and 409, specifically a third adhesive member (not shown) disposed on the second film 409, A second heat dissipation unit 417 disposed on the first heat dissipation unit 415 and a fourth film 419 disposed on the second heat dissipation unit 417. The first heat dissipation unit 415 may include a heat dissipation unit 415, The second film 409 and the second heat-radiating portion 417 or the fourth film 419 can be attached by the third adhesive member.

According to convenience of description, the second adhesive member 413 may be referred to as a third adhesive member, and the third adhesive member may be referred to as a second adhesive member. The third film 411 may be referred to as a fourth film 419 and the fourth film 419 may be referred to as a third film 411. [

The first heat-radiating portion 415 may be a heat-radiating sheet including copper (Cu) as a member for inducing heat generated in the coil portion 403 in the vertical direction. The second heat-radiating portion 417 is a member for guiding the heat generated in the coil portion 403 in the horizontal direction, and may be a heat-radiating sheet including graphite. At least one portion of at least one of the first heat-radiating portion 415 and / or the second heat-radiating portion 417 may be connected to a discharge member such as a case. The arrangement order of the first heat-radiating portion 415 and the second heat-radiating portion 417 may be changed. That is, the second heat dissipating unit 417 may be disposed on the third adhesive member, and the first heat dissipating unit 415 may be disposed on the second heat dissipating unit 417.

Accordingly, the heat generated in the coil part 403 is rapidly guided in the vertical direction by the first heat radiation part 415, and the heat of the coil part 403 guided to the first heat radiation part 415 is guided to the second heat radiation part The heat radiation performance is drastically increased and the power transmission efficiency can be prevented from being lowered due to the heat of the coil part 403. In addition,

The sizes of the receiving portions 416 and 418 of the third adhesive member (not shown), the first heat radiating portion 415, the second heat radiating portion 417 and / or the fourth film 419 may be different. For example, the width of the third accommodating portion 416 of the second heat dissipating portion 417 may be equal to the width of the third accommodating portion 416 of the third adhesive member, the first heat dissipating portion 415, and / Width. For example, the width of the fourth accommodating portion 418 of the second heat releasing portion 417 is equal to the width of the fourth accommodating portion 418 of the third adhesive member, the first heat radiating portion 415, and / Width. The shape of the third accommodating portion 416 corresponds to the shape of the first accommodating portion 412 of the shielding members 405, 407 and 409 and the shape of the fourth accommodating portion corresponds to the shape of the shielding member 405, 407, 2 accommodating portion 414 of the first embodiment. The fourth film 419 is a member for protecting the first and second heat radiation parts 415 and 417, and may be formed of, for example, polyimide resin. The fourth film 419 may have black color, but is not limited thereto.

According to the second embodiment, the first heat radiating part 415 for guiding heat in the vertical direction and the second heat radiating part 417 for guiding heat in the horizontal direction are provided, So that the discharge performance can be improved.

The wireless charging coil modules 400 and 400A configured as described above can be mass-produced by the process automation. All components included in the wireless charging coil module 400, 400A may be supplied in a roll-to-roll fashion. The components described below may have a large size in which a plurality of wireless charging coil modules 400, 400A may be produced collectively.

For example, a cutting process for forming the receiving portions 412 and 414 may be performed after the first adhesive member 405 is supplied in a roll-to-roll manner. The cutting process for forming the receiving portions 412 and 414 may be performed after the shielding material 407 is supplied in a roll-to-roll manner. The first adhesive member 405 can be attached to the lower surface of the shielding member 407. [ A cutting process for forming the receiving portions 412 and 414 may be performed after the second film 409 is supplied in a roll-to-roll manner. The second film 409 may be attached on the shielding material 407. [

The first film 401 including the coil part 403 can be supplied. The shielding material 407 and the second film 409 may be attached to the upper surface of the first film 401 including the coil portion 403 via the first adhesive member 405. [

The second adhesive member 413 may be supplied in a roll-to-roll fashion and the third film 411 may be supplied in a roll-to-roll fashion. The second adhesive member 413 can be attached on the third film 411. [ Then, the third film 411 can be attached to the lower surface of the first film 401 via the second adhesive member 413.

After the third adhesive member (not shown) is supplied in a roll-to-roll manner, a cutting process for forming the receiving portions 416 and 418 can be performed. After the first heat-radiating portion 415 is supplied in a roll-to-roll fashion, a cutting process for forming the receiving portions 416 and 418 may be performed. The third adhesive member can be attached to the lower surface of the first heat-radiating portion 415. [ After the second heat-radiating portion 417 is supplied in a roll-to-roll fashion, a cutting process for forming the receiving portions 416 and 418 may be performed. The second heat-radiating portion 417 may be attached to the upper surface of the first heat-radiating portion 415. After the fourth film 419 is supplied in a roll-to-roll fashion, a cutting process for forming the receiving portions 416 and 418 can be performed. The fourth film 419 may be attached to the upper surface of the second heat-radiating portion 417.

The first heat radiating portion 415, the second heat radiating portion 417 and the fourth film 419 may be attached to the upper surface of the third film 411 through the third adhesive member.

Accordingly, the shielding members 405, 407, 409 and the heat radiation members 415, 417, 419 are disposed on the first film 401 including the coil portion 403, and under the first film 401, The third film 411 may be disposed. The receiving portion is not formed in the first film 401 or the third film 411. The accommodating portions 412 and 414 may be formed in the shielding members 405 and 407 and the accommodating portions 416 and 418 may be formed in the radiating members 415 and 417 and 419. [

The connecting board 430 is inserted into the receiving portions 412 and 414 of the shielding members 405 and 407 and the receiving portions 418 and 418 of the heat radiating members 415 and 417 and 419, The inner pad 403b of the coil portion 403 and the outer pad 403c may be electrically connected to the connection board 430. [

Thereafter, a plurality of wireless charging coil modules 400 and 400A can be mass-produced by the cutting process.

By such a process, the wireless charging coil modules 400 and 400A can be mass-produced all at once by the process automation.

The process sequence described above can be changed as much as desired by the user.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the embodiments should be determined by rational interpretation of the appended claims, and all changes within the equivalents of the embodiments are included in the scope of the embodiments.

The present invention can be used in the field of wireless power transmission and reception.

Claims (15)

1. A first film;

   A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad;

   A shielding member disposed on the coil portion, the shielding member having a receiving portion; And

   And a connecting substrate at least partially disposed in the accommodating portion,

   The receiving portion includes:

   A first receiving portion formed in a first direction from the inner pad toward the outer pad; And

   And a second accommodating portion connected to the first accommodating portion and formed in a second direction different from the first direction,

   Wherein:

   A first connection portion disposed in the first accommodation portion and connected to the inner pad;

   A second connection portion disposed in the second accommodation portion and connected to the outer pad; And

   And a third connection portion extending from the second connection portion and including a bent portion.
2. The method according to claim 1,

   Wherein:

   A first connection member connected to the outer pad;

   A second connection member connected to the inner pad;

   A first contact portion connected to the first connection member;

   And a second contact portion connected to the second connection member.
3. 3. The method of claim 2,

   Wherein:

   A first protective layer;

   An insulating layer disposed on the first passivation layer;

   A second protective layer disposed on the insulating layer;

   A first conductive line disposed between the first protective layer and the insulating layer, the first conductive line connecting the first connecting member and the first contact; And

   And a second conductive line disposed between the insulating layer and the second protective layer, the second conductive line connecting the second connection member and the second contact.
4. The method according to claim 1,

   The width of the second accommodating portion is larger than the width of the first accommodating portion,

   Wherein the first and second receiving portions have a shape corresponding to the first and second connecting portions of the connecting board.
5. The method according to claim 1,

   Wherein only the second conductive line is disposed in the first connection portion of the connection board,

   A portion of the second conductive line through a first via is connected to the inner pad of the coil portion,

   The first conductive line and the second conductive line are vertically stacked on the second connection portion of the connection substrate,

   And a portion of the first conductive line is connected to the outer pad of the coil portion via a second via.
6. A first film;

   A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad;

   A shielding member disposed on the coil portion, the shielding member having a receiving portion; And

   And a connecting substrate at least partially disposed in the accommodating portion,

   Wherein:

   A first protective layer;

   An insulating layer disposed on the first passivation layer;

   A second protective layer disposed on the insulating layer;

   A first conductive line disposed between the first passivation layer and the insulating layer; And

   And a second conductive line disposed between the insulating layer and the second passivation layer,

   A first connection part in which the second conductive line is disposed;

   A second connection part in which the first conductive line and the second conductive line are overlapped in a vertical direction; And

   And a third connection portion in which the first conductive line and the second conductive line are overlapped in a horizontal direction without overlapping in a vertical direction.
7. The method according to claim 6,

   A first connection member disposed at the first connection portion;

   A second connecting member disposed at the second connecting portion; And

   And first and second contact portions disposed on the third connection portion,

   The first conductive line connects the first connection member and the first contact,

   And the second conductive line connects the second connection member and the second contact.
8. The method according to claim 6,

   Wherein only the second conductive line is disposed in the first connection portion of the connection board,

   A portion of the second conductive line through a first via is connected to the inner pad of the coil portion,

   The first conductive line and the second conductive line are vertically stacked on the second connection portion of the connection substrate,

   And a portion of the first conductive line is connected to the outer pad of the coil portion via a second via.
9. A first film;

   A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad;

   A shielding member disposed on the coil portion, the shielding member having a receiving portion; And

   And a connecting substrate at least partially disposed in the accommodating portion,

   Wherein:

   A first connection member connected to the outer pad;

   A second connection member connected to the inner pad;

   A first contact portion connected to the first connection member;

   And a second contact portion connected to the second connection member,

   The first connection member and the second connection member are exposed to the first surface of the connection substrate,

   Wherein the first contact portion and the second contact portion are exposed to a second surface different from the first surface of the connection substrate.
10. 10. The method of claim 9,

    Wherein:

    A first connection portion formed in a first direction from the inner pad toward the outer pad;

    A second connection part formed in a second direction different from the first direction; And

    And a third connection part extending in a third direction at the second connection part and extending in a fourth direction different from the second direction,

    And the third connection portion includes a bent portion extending vertically and then extending horizontally.
11. In the ninth aspect,

    The shielding member

    A first adhesive member attached to the first film and the coil part;

    A shielding material disposed on the first adhesive member; And

    And a second film disposed on the shielding material.
12. 12. The method of claim 11,

    Wherein the shielding material is an EMB shielding material and has a thickness of at least 73 mu m,

    Wherein a width of the first and second receiving portions of the shielding material is larger than a width of the first and second receiving portions of the second film.
13. A main board having a connector;

    And a wireless charging coil module disposed on the main board,

    The wireless charging coil module includes:

    A first film;

    A coil portion disposed on the first film, the coil portion including an inner pad and an outer pad;

    A shielding member disposed on the coil portion, the shielding member having a receiving portion; And

    And a connecting substrate at least partially disposed in the accommodating portion,

    The receiving portion includes:

    A first receiving portion formed in a first direction from the inner pad toward the outer pad; And

    And a second accommodating portion connected to the first accommodating portion and formed in a second direction different from the first direction,

    Wherein:

    A first connection portion disposed in the first accommodation portion and connected to the inner pad;

    A second connection portion disposed in the second accommodation portion and connected to the outer pad; And

    And a third connection portion extending from the second connection portion and including a bent portion.
14. 14. The method of claim 13,

    And a part of the connection board is rotated so that the connection board is fastened to the connector of the main board.
15. 15. The method of claim 14,

    And a part of the connecting board is rotated from the inside of the coil part toward the outside of the coil part.

Images