Wireless power receiver

A wireless power receiver is provided. The wireless power receiver includes a substrate partitioned into a first area and a second area neighboring the first area, a circuit portion mounted in the first area of the substrate and including a receiving module, a resonance pattern portion directly provided on at least one surface of the substrate in the second area, and a shield mounted on a surface of the substrate in the second area.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit under 35 U.S.C. § 119(a) of a Korean patent application filed on Apr. 27, 2015 in the Korean Intellectual Property Office and assigned Serial No. 10-2015-0059127, the entire disclosure of which is hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to wireless power receivers.

BACKGROUND

An electronic device may come with various structures for supplying power thereto, one of which is a battery embedded in the electronic device. The battery may be charged via a charging cable while embedded in the electronic device, or may be removed from the electronic device and be charged in a charging pack (called a cradle) or via a charging cable. When a charging cable is directly connected to the electronic device or charging pack, the electronic device or the charging pack must have cable connection terminals for electrical connection to the charging cable. There are proposed devices that may charge a battery wirelessly or via contactless charging. Such wireless charging (or contactless charging) technology, which uses wireless power transfer, may be used for charging electronic devices with rechargeable batteries. For example, an electronic device may be automatically charged when placed on a charging pad without a connection between the charger and the electronic device through a separate connector.

A wireless charger for wireless charging may include a wireless power transmitter and a wireless power receiver respectively in the charging pad and the electronic device. The wireless power transmitter wirelessly transmits power using a power transmitting member, and the wireless power receiver wirelessly receives the power from the wireless power transmitter using a power receiving member. The wireless power receiver may be embedded in the electronic device, and the wireless power transmitter may be included in the charging pad having the electronic device placed thereon.

Such wireless power transmitter or receiver requires a wireless charging resonator for transmitting or receiving power wirelessly and a wireless module for converting or rectifying alternating current (AC) power induced through the wireless charging resonator into direct current (DC) power.

Generally, a wireless charger may include wireless transmitting and receiving modules, having parts required to transmit or receive power on a printed circuit board (PCB), and a wireless charging resonator electrically connected with the wireless transmitting and receiving modules and having a shield separate from the wireless modules.

According to the related art, the electronic device must come with cable connection terminals for connection between the electronic device and an external power cable in order to charge the battery using the external power cable. In other words, the electronic device must have various modules for the cable connection terminals, which require a space for placing the modules of the cable connection terminals.

The cable connection terminals may be provided for data communication as well as charging the battery. Also, the battery charging pack needs to be removed from the electronic device and carried separately for charging the battery. However, frequent connection of the cable for battery charging may damage the cable connection terminals.

As a connection to the internal circuit board of the electronic device is made via the cable connection terminals, dust or other foreign bodies may come in through the cable connection terminals. For example, influx of water may damage the internal modules of the electronic device. Charging the battery using a cradle in a wired manner requires the electronic device to be placed on the cradle, which is an inconvenience for the user. Further, the need of the cradle to be always carried together may deteriorate portability while increasing the risk of loss.

A wireless charger separately includes a first member having a wireless module embedded on a PCB and a second member including a wireless charging resonator and shield on a circuit board separate from the PCB, and as they are electrically connected, a wireless power receiver may be processed. Accordingly, the wireless charger undergoes complicated process operations, consumes a long processing time, and may cause an increase in size due to the heights of the resonator, shield, and parts mounted therein.

SUMMARY

Aspects of the present disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide a wireless power receiver with a simplified structure, which may be manufactured with a simplified assembling process and reduced manufacturing costs.

There is also provided a wireless power receiver that may slim down and may enhance the wireless transmitting/receiving effects.

In accordance with an aspect of the present disclosure, a wireless power receiver is provided. The wireless power receiver includes a substrate partitioned into a first area and a second area neighboring the first area, a circuit portion mounted in the first area of the substrate and including a receiving module, a resonance pattern portion directly provided on at least one surface of the substrate in the second area, and a shield mounted on a surface of the substrate in the second area.

In accordance with another aspect of the present disclosure, a wireless power receiver is provided. The wireless power receiver includes a multi-layered substrate, a circuit portion positioned on the substrate, a resonance pattern portion provided on the substrate around the circuit portion and electrically connected with the circuit portion, and a shield provided on the substrate and mounted to neighbor the circuit portion, wherein the substrate may include a circuit portion mount area where the circuit portion is mounted and a resonance pattern mount area neighboring the circuit portion mount area, the resonance pattern portion mounted in the resonance pattern mount area.

According to various embodiments of the present disclosure, in contrast to the wireless power receiver of the related art that separately includes a first member having a wireless module mounted on a printed circuit board (PCB) and a second member including a wireless charging resonator and shield on a board separate from the PCB, a module and resonator may be implemented on a single PCB, leading to a reduced thickness of the shield or other parts, a sufficient room on the electronic device, and a decreased overall thickness of the electronic device.

Further, since the module and resonator may be implemented on a single PCB, leading to a simplified process, a reduced processing time, and cost savings.

DETAILED DESCRIPTION

Terms introduced with ordinal numbers such as ‘first’ and ‘second’ may be used to denote various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another. For example, a first component may be denoted a second component, and vice versa without departing from the scope of the present disclosure. The term “and/or” may denote a combination(s) of a plurality of related items as listed or any of the items.

The terms “front surface,” “rear surface,” “upper surface,” and “lower surface” are relative ones that may be varied depending on directions in which the figures are viewed, and may be replaced with ordinal numbers such as “first” and “second.” The order denoted by the ordinal numbers, first and second, may be varied as necessary.

It will be further understood that the terms “comprise” and/or “have,” when used in this specification, specify the presence of stated features, integers, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present disclosure belong. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. In some cases, the terms defined herein may be interpreted to exclude various embodiments of the present disclosure.

As used herein, the term “electronic device” may be any device with a touch panel, and the electronic device may also be referred to as a terminal, a portable terminal, a mobile terminal, a communication terminal, a portable communication terminal, a portable mobile terminal, or a display apparatus.

For example, the electronic device may be a smartphone, a mobile phone, a navigation device, a game device, a television (TV), a head unit for vehicles, a laptop computer, a tablet computer, a portable media player (PMP), or a personal digital assistant (PDA). The electronic device may be implemented as a pocket-sized portable communication terminal with a radio communication function. According to an embodiment of the present disclosure, the electronic device may be a flexible device or a flexible display.

The electronic device may communicate with an external electronic device, e.g., a server, or may perform tasks by interworking with such an external electronic device. For example, the electronic device may transmit an image captured by a camera and/or location information detected by a sensor to a server through a network. The network may include, but is not limited to, a mobile or cellular communication network, a local area network (LAN), a wireless LAN (WLAN), a wide area network (WAN), the Internet, or a small area network (SAN).

Now, the concept of a wireless charging system that may apply to various embodiments of the present disclosure is described with reference toFIGS. 1 to 3.

FIG. 1is a concept view illustrating an operation of a wireless charging system according to an embodiment of the present disclosure.

Referring toFIG. 1, the wireless charging system includes a wireless power transmitter100and at least one wireless power receiver110-1,110-2, and110-n.

The wireless power transmitter100may wirelessly send power1-1,1-2, and1-nto the at least one wireless power receiver110-1,110-2, and110-n, respectively. Specifically, the wireless power transmitter100may wirelessly transmit the power1-1,1-2, and1-nto a wireless power receiver authenticated by a predetermined authentication process.

The wireless power transmitter100may form electrical connections with the wireless power receivers110-1,110-2, and110-n. For example, the wireless power transmitter100may transmit electromagnetic waves of wireless power to the wireless power receivers110-1,110-2, and110-n.

Meanwhile, the wireless power transmitter100may perform bi-lateral communication with the wireless power receivers110-1,110-2, and110-n. Here, the wireless power transmitter100and the wireless power receiver110-1,110-2, and110-nmay process or communicate packets2-1,2-2, and2-nincluding predetermined frames. The wireless power receiver may be particularly implemented as a mobile communication terminal, a PDA, a PMP or a smartphone.

The wireless power transmitter100may wirelessly provide power to a plurality of wireless power receivers110-1,110-2, and110-n. For example, the wireless power transmitter100may transmit power to the plurality of wireless power receivers110-1,110-2, and110-nthrough the resonant type. When the wireless power transmitter100adopts the resonant type, the distance between the wireless power transmitter100and the plurality of wireless power receivers110-1,110-2, and110-nmay be preferably not more than 30 m. When the wireless power transmitter100adopts the electromagnetic inductive type, the distance between the wireless power transmitter100and the plurality of wireless power receivers110-1,110-2, and110-nmay be preferably 10 cm or less.

The wireless power receivers110-1,110-2, and110-nmay receive the wireless power from the wireless power transmitter100to charge their respective batteries provided therein. The wireless power receivers110-1,110-2, and110-nmay transmit, to the wireless power transmitter100, a signal for requesting to transmit wireless power, information necessary to receive wireless power, state information of the wireless power receivers, control information of the wireless power transmitter100, etc.

The wireless power receivers110-1,110-2, and110-nmay transmit to the wireless power transmitter100messages that indicate the respective states of the wireless power receivers110-1,110-2, and110-n.

The wireless power transmitter100may include a display means, such as a display, and may display the respective states of the wireless power receivers110-1,110-2, and110-nbased on the messages received from the wireless power receivers110-1,110-2, and110-n, respectively. Further, the wireless power transmitter100may also display the time predicted to be taken until each of the wireless power receivers110-1,110-2, and110-nis completely charged.

The wireless power transmitter100may transmit a control signal to disable the wireless charging function to each of the wireless power receivers110-1,110-2, and110-n. When receiving the control signal to disable the wireless charging function from the wireless power transmitter100, the wireless power receiver may disable the wireless charging function.

FIG. 2is a block diagram illustrating a wireless power transmitter and a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 2, the wireless power transmitter200may include a power transmitter211, a controller212, and a communication unit213. The wireless power receiver250may include a power receiver251, a controller252, and a communication unit253.

The power transmitter211may provide power required by the wireless power transmitter200and may wirelessly provide power to the wireless power receiver250. Here, the power transmitter211may supply power in the form of an alternating current (AC) waveform or may supply power in the form of a direct current (DC) waveform, convert the same into an AC waveform, and supply the same in the form of an AC waveform. The power transmitter211may be implemented in the form of an embedded battery or in the form of a power receiving interface so that it receives power from the outside and supplies the same to other components. It will be appreciated by one of ordinary skill in the art that the power transmitter211is not particularly limited as long as it may provide a constant AC waveform of power.

Further, the power transmitter211may provide the AC waveform to the wireless power receiver250in the form of an electromagnetic wave. The power transmitter211may further include a resonant circuit and may transmit or receive a predetermined electromagnetic wave accordingly. When the power transmitter211is implemented with a resonant circuit, the inductance L of the loop coil of the resonant circuit may be varied. It will be appreciated by one of ordinary skill in the art that the power transmitter211is not particularly limited as long as it may communicate electromagnetic waves.

The controller212may control the overall operation of the wireless power transmitter200. The controller212may control the overall operation of the wireless power transmitter200using an algorithm, program, or application required for the control read out from a storage unit (not shown). The controller212may be implemented in the form of, e.g., a central processing unit (CPU), a microprocessor, or a mini-computer.

The communication unit213may communicate with the member250via a predetermined scheme. The communication unit213may communicate with the communication unit253of the wireless power receiver250via, e.g., near field communication (NFC), Zigbee communication, infrared (IR) communication, visible light communication, Bluetooth (BT) communication, BT low energy (BLE) communication, etc. The communication unit213may use a carrier sense multiple access (CSMA)/collision avoidance (CA) algorithm Meanwhile, the above-enumerated communication schemes are merely examples, and various embodiments of the present disclosure are not limited to a particular communication scheme performed by the communication unit213.

Meanwhile, the communication unit213may transmit a signal of information on the wireless power transmitter200. Here, the communication unit213may unicast, multicast, or broadcast the signal.

Further, the communication unit213may receive power information from the wireless power receiver250. Here, the power information may include at least one of capability, remaining battery, recharge count, usage, battery capability, battery ratio, etc. of the wireless power receiver250.

Further, the communication unit213may transmit a charging function control signal to control the charging function of the wireless power receiver250. The charging function control signal may be a control signal that enables or disables the charging function by controlling the power receiver251of a particular wireless power receiver250. Further, as described below in greater detail, the power information may include information such as insertion of a wired charging terminal, a switch from an SA mode to an NSA mode, an erroneous condition release, etc.

The communication unit213may receive signals from other wireless power transmitters (not shown) as well as from the wireless power receiver250. For example, the communication unit213may receive a Notice signal from other wireless power transmitter.

AlthoughFIG. 2illustrates that the power transmitter211and the communication unit213are configured in different hardware components so that the wireless power transmitter200performs communication in an out-band manner, this is merely an example.

According to an embodiment of the present disclosure, the power transmitter211and the communication unit213may be implemented in a single hardware component so that the wireless power transmitter200may perform communication in an in-band manner.

The wireless power transmitter200and the wireless power receiver250may communicate various signals therebetween, so that the subscription of the wireless power receiver250to a wireless power network and a charging process through wireless power communication, which are hosted by the wireless power transmitter200, may be carried out.

FIG. 3is a detailed block diagram illustrating a wireless power transmitter and a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 3, the wireless power transmitter200may include a power transmitter211, a controller and communication unit212and213, a driver214, an amplifier215, and a matching unit216. The wireless power receiver250may include a power receiver251, a controller and communication unit252and253, a rectifier254, a DC/DC converter255, a switching unit256, and a load unit257.

The driver214may output DC power with a preset voltage. The voltage of the DC power output from the driver214may be controlled by the controller and communication unit212and213.

The DC current output from the driver214may be output to the amplifier215. The amplifier215may amplify a DC current with a preset gain. Further, a DC current may be converted into an AC current based on a signal input from the controller and communication unit212and213. Accordingly, the amplifier215may output AC power.

The matching unit216may perform impedance matching. For example, the impedance viewed from the matching unit216may be adjusted to perform control so that the output power shows a higher efficiency or higher output. The matching portion216may adjust the impedance under the control of the controller and communication unit212and213. The matching unit216may include at least one of a coil and a capacitor. The controller and communication unit212and213may control the connection with at least one of the coil and the capacitor and may accordingly perform impedance matching.

The power transmitter211may transmit the AC power as inputted to the power receiver251. The power transmitter211and the power receiver251may be implemented as resonant circuits having the same resonant frequency. For example, the resonant frequency may be determined as 6.78 MHz.

Meanwhile, the controller and communication unit212and213may perform communication with the controller and communication unit252and253of the wireless power receiver250, e.g., bilateral communication (Wi-Fi, ZigBee, or BT/BLE) at 2.4 GHz.

Meanwhile, the power receiver251may receive power for charging.

The rectifier254may rectify the wireless power received by the power receiver251into a DC form and may be implemented in the form of, e.g., bridged diodes. The DC/DC converter255may convert the rectified power with a preset gain. For example, the DC/DC converter255may convert the rectified power so that the voltage at an output end (not shown) is 5V. Meanwhile, a minimum value and maximum value of the voltage applicable to a front end (not shown) of the DC/DC converter255may be previously set.

The switching unit256may connect the DC/DC converter255with the load unit257. The switching unit256may maintain an on/off status under the control of the controller252. The load unit257may store the converted power input from the DC/DC converter255when the switching unit256is in an on status.

FIG. 4is a view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 4, the wireless power receiver300may include a substrate310, a circuit portion, a receiving module320, a resonance pattern portion330, and a shield340.

The substrate310may be a printed circuit board (PCB) and may include at least one or more dielectric layers (not shown) and at least one or more metal layers (not shown). The dielectric layer may be formed of flame retardant4 (FR4), polyolefin-based, polyvinyl chloride (PVC)-based, polystyrene-based, polyester-based, polyurethane-based, or polyamide-based insulating material. The metal layer may be stacked on a surface or opposite surface of the dielectric layer or the whole or part of the surface or opposite surface of the dielectric layer. The metal layer may have a plate shape with no patterns. The metal layer may be connected to a ground. The metal layer may be formed of a metal, such as gold, silver, copper, aluminum, iron, or titanium, or an alloy including such metal. The metal layer may have an electric conductance σ of 2.38×106S/m or more at 20° c., preferably 3.5×107S/m or more at 20° c. The metal layer312may have a thickness of 10−7m or more.

The substrate310having at least one or more dielectric layers and at least one or more metal layers stacked may be partitioned into two areas respectively having the circuit portion and the resonance pattern portion330, and accordingly, the receiving module320and the resonance pattern portion330for wireless charging may be mounted on the single substrate310.

The substrate310may be a single-layered substrate310or a multi-layered substrate310depending on the stacking of the dielectric layers and the metal layers. For example, as shown inFIG. 5, the substrate310may have a single-layered structure where one metal layer312is stacked on the top of one dielectric layer311. For example, as shown inFIGS. 6, 8, and 10, the substrate310may have a multi-layered structure where two metal layers312are stacked on both surfaces of one dielectric layer311, i.e., on the top and bottom of the dielectric layer311. As shown inFIGS. 11 and 12, the substrate310may have a two-layered structure that includes a first area X formed in a two-layered structure, specifically, one dielectric layer311and metal layers312disposed on both surfaces of the dielectric layer311, and a second area Y where no metal layer312is formed on one of the top and bottom of the dielectric layer311so that the metal layer312is formed on only one surface of the dielectric layer311. As shown inFIGS. 11 and 12, the substrate310may have a two-layered structure that includes a first area X formed in a two-layered structure where one dielectric layer311is provided and metal layers312are disposed on both surfaces of the dielectric layer311, and a second area Y where no metal layer312is formed on one of the top and bottom of the dielectric layer311so that the metal layer312is formed on only one surface of the dielectric layer311.

As shown inFIGS. 23 to 32, the substrate may have a multi-layered structure where a plurality of dielectric layers (in this embodiment, three dielectric layers) are provided, and a plurality of metal layers are provided on the dielectric layers, respectively. For example, as shown inFIGS. 29 and 32, the substrate may be provided in a four-layered structure that includes a first area X formed in a four-layered structure that includes three dielectric layers and four metal layers formed on the tops and bottoms of the three dielectric layers, and a second area Y where no metal layers are formed on both surfaces of the uppermost dielectric layer while the metal layers are formed on both surfaces of only the lowermost dielectric layer.

According to an embodiment of the present disclosure, the substrate may include a first area X where an electronic part, such as the receiving module, is provided, and a second area Y that is positioned adjacent to the first area X and has the resonance pattern portion mounted therein. According to an embodiment of the present disclosure, a structure in which the first area X and the second area Y are implemented at two opposite sides, respectively, of the substrate310and a structure in which the first area X and the second area Y are implemented at the center and surrounding portion, respectively, of the substrate310are described as an example.

The shield may be mounted on the top of the substrate in the second area Y to shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion. The shield may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

Hereinafter, an example in which the first area X and the second area Y are implemented at two opposite sides, respectively, of the substrate and the substrate is formed in a single-layered structure is described with reference toFIG. 5.

FIG. 5is a view illustrating an example where a receiving module and a resonance pattern portion are mounted on a substrate having a layered structure in a wireless power receiver according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the substrate310may have a single-layered structure, and the substrate may be provided with one dielectric layer311and one metal layer312formed on the dielectric layer311. The substrate310having the dielectric layer311and the metal layer312formed on the top of the dielectric layer311may be partitioned into a first area X and a second area Y positioned adjacent to the first area X.

The first area X may be an area at a first side of the substrate310, and a circuit portion including the receiving module320may be provided in the first area X. The second area Y may be an area at an adjacent, opposite side of the first side of the substrate310, and the metallic, resonance pattern portion330may be patterned on the second area Y. According to an embodiment of the present disclosure, the circuit portion may be mounted on a surface of the substrate310in the first area X, specifically, the top surface thereof, and the resonance pattern portion330may be mounted on a surface of the substrate310in the second area Y, specifically, the top surface thereof.

The circuit portion may be an electronic part including the receiving module320and may be a component that may be electrically connected with the substrate310, specifically, a surface of the substrate310, or the top surface of the metal layer312in the first area X.

The resonance pattern portion330may be implemented on a surface of the substrate310, such as a surface of the metal layer312in this embodiment. The resonance pattern portion330may be an antenna pattern capable of receiving wireless power and may be formed as a conductive line(s) with a preset pattern such as a loop or spiral, and although not shown, each conductive line may have a predetermined line width. The resonance pattern portion330may be formed of a predetermined pattern of a metal, such as gold, silver, copper, an alloy, etc.

The shield340may be mounted on the top of the substrate310with a thickness that measures the height of the electronic part, such as the receiving module320.

According to an embodiment of the present disclosure, although an example is described in which the substrate310has a single-layered structure while the circuit portion is provided in the first area X at a side of the substrate310, and the resonance pattern portion330is provided in the second area Y at an opposite side of the substrate310, the stacked structure of the substrate310is not limited thereto.

For example, when the substrate310has a structure of two or more layers, i.e., a multi-layered structure, the circuit portion may be provided in the first area X at a side of the substrate310, and at least one or more resonance pattern portions330may be provided in the second area Y at an opposite side of the substrate310. In such case, there may be provided a via hole electrically connected with the circuit portion and allowing for electrical connection of the resonance pattern portions330provided on at least one or more layers.

As described above, one substrate310may be provided, the circuit portion having the receiving module320electrically connected with the resonance pattern portion330may be mounted at a side on a surface of the substrate310, and the resonance pattern portion330may be mounted at an opposite side on the surface of the substrate310. Thus, the process for the wireless power receiver300may be done on the single substrate310. Further, the shield340may be mounted with the height of the electronic part such as the receiving module320implemented on the circuit portion.

Hereinafter, an example in which the first area X and the second area Y are implemented at two opposite sides, respectively, of the substrate310and the substrate310has a two-layered structure is described with reference toFIGS. 6 to 12.FIGS. 6 and 7are views illustrating an example where a resonance pattern portion is provided on both surfaces of a substrate, andFIGS. 8 to 12are views illustrating an example where a resonance pattern portion is provided on a surface of a substrate. Further, the above description applies to the same structure or configuration given above.

FIG. 6is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a surface of the substrate and a resonance pattern portion is mounted on both surfaces of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

FIG. 7is a plan view schematically illustrating a wireless power receiver having a substrate with a two-layered structure in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 6 and 7, the substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b).

As described above, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a side of the substrate310, and a second area Y positioned adjacent to the first area X and corresponding to an opposite side of the substrate310.

The circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X.

The resonance pattern portion330may include a first resonance pattern331mounted on the first metal layer312ain the second area Y and a second resonance pattern332mounted on the second metal layer312bin the second area Y.

At least one or more first via holes350may be formed through the dielectric layer311in the first area X to electrically connect a first surface of the substrate310with a second surface of the substrate310, which is an opposite surface of the first surface. The circuit portion may be disposed on both the top and bottom of the first area X.

At least one or more second via holes360may be provided through the dielectric layer311in the second area Y to electrically connect a first surface of the second area Y with a second surface of the second area Y, which is an opposite surface of the first surface, specifically the first metal layer312a, the first resonance pattern331provided on the first metal layer312a, the second metal layer312b, and the second resonance pattern332provided on the second metal layer312b.

The shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the first and second resonance patterns311and312. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

As described above, the circuit portion having the receiving module320electrically connected with the resonance pattern portion330may be mounted at a side on a surface of the substrate310, and the resonance pattern portion330may be mounted at an opposite side on two opposite surfaces of the substrate310. Thus, the wireless power receiver300may be formed on the single substrate310. Further, the shield340may be mounted with the height of the electronic part such as the receiving module320implemented on the circuit portion.

Hereinafter, an example in which the resonance pattern portion330is positioned on at least one of a first surface of the dielectric layer311or a second surface of the dielectric layer311, which is an opposite surface of the first surface, is described with reference toFIGS. 8 to 12.

FIG. 8is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on a second surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

FIG. 9is a plan view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 8 and 9, as described above in connection withFIG. 6, the substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b). Further, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a side of the substrate310, and a second area Y positioned adjacent to the first area X and corresponding to an opposite side of the substrate310.

Further, according to an embodiment of the present disclosure, the substrate310may be partitioned into a first area X and a second area Y positioned adjacent to the first area X. The circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X.

According to an embodiment of the present disclosure, the resonance pattern portion330may be provided on a second surface of the substrate310, which is an opposite surface of the first surface of the substrate310, specifically on the second metal layer312bin the second area Y of the substrate310. Further, as the second metal layer312band the resonance pattern portion330are positioned at a lower portion of the substrate310, a first via hole350may be implemented in the first area X to connect together the top and bottom of the substrate310so as to electrically connect with the circuit portion having the receiving module320.

Further, the shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion330. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 10is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on a first surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 10, as described above in connection withFIG. 8, the substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311, two opposite surfaces, or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b). Further, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a side of the substrate310, and a second area Y positioned adjacent to the first area X and corresponding to an opposite side of the substrate310.

However, a difference from the wireless power receiver300described above in connection withFIG. 8lies in the position where the resonance pattern portion330is mounted. In other words, according to an embodiment of the present disclosure, the circuit portion may be mounted in the first area X in the first surface of the substrate310, specifically on the first metal layer312ain the first area X of the substrate310. Further, according to an embodiment of the present disclosure, the resonance pattern portion330may be provided on the first surface of the substrate310, specifically on the first metal layer312ain the second area Y of the substrate310. Further, a first via hole350may be implemented in the first area X to connect together the top and bottom of the substrate310so as to electrically connect the circuit portion with the parts mounted on the second metal layer312bin the first area X.

Further, the shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion330. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 11is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided at a side of a first surface of the substrate and a resonance pattern portion is mounted at an opposite side of the first surface of the substrate, with a metal layer removed, in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 11, the substrate310may have a multi-layered structure, specifically a two-layered structure, as described above in connection withFIG. 6, and the substrate310may include a dielectric layer311and a metal layer312. Particularly in the instant embodiment, the substrate310may have one dielectric layer311. Further, the metal layers312may be provided on both surfaces in the first area X positioned at a side of the substrate310, and the metal layer312may be provided to be mounted on only one surface or opposite surface (in this embodiment, the bottom or opposite surface) in the second area Y of the substrate310. In other words, the metal layer312stacked on the top of the substrate310in the second area Y may be removed, so that the metal layer312may be provided on only the top of the substrate310in the first area X of the substrate310.

Specifically, a look at the top of the substrate310shows that the first metal layer312amay be provided in the first area X, and the first metal layer312amay be removed from the second area Y to expose the top surface of the dielectric layer311. In this condition, the resonance pattern portion330may be immediately patterned on the top of the dielectric layer311in the second area Y where the first metal layer312ahas been removed.

A look at the bottom of the substrate310shows that the second metal layer312bmay be formed in the first area X and the second area Y.

Further, according to an embodiment of the present disclosure, the substrate310may be partitioned into a first area X and a second area Y positioned adjacent to the first area X. The circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X.

As set forth above, according to an embodiment of the present disclosure, the resonance pattern portion330may be right patterned on the first surface of the dielectric layer311where the first metal layer312ahas been removed from the second area Y.

The first via hole350may be provided through the dielectric layer311in the first area X to electrically connect the top and bottom of the substrate310in order to allow for electrical connection between the circuit portion and the electronic parts implemented on the second metal layer312bon the bottom surface of the substrate310.

The shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the first and second resonance patterns331and332. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 12is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on the metal layer provided on a second surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 12, the substrate310may have a multi-layered structure, specifically a two-layered structure, as described above in connection withFIG. 11, and the substrate310may include a dielectric layer311and a metal layer312. According to an embodiment of the present disclosure, the substrate310may be partitioned into a first area X at a side thereof and a second area Y neighboring the first area and positioned at an opposite side thereof. Further, the circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X. Further, a difference from the embodiment described above in connection withFIG. 11lies in that, with the first metal layer312aremoved from the top of the dielectric layer311, the resonance pattern portion330is patterned on the top of the dielectric layer311in the above embodiment while in the instant embodiment, the shield340is mounted on the top of the dielectric layer311, and the resonance pattern portion330is patterned on the surface of the second metal layer312bin the second area Y.

Specifically, in the instant embodiment, one dielectric layer311may be provided, and metal layers312may be provided on both surfaces in the first area X positioned at a side of the substrate310, and the metal layer312may be provided to be mounted on only one surface or opposite surface (in this embodiment, the bottom or opposite surface) in the second area Y of the substrate310. That is, the metal layer312stacked on the top of the substrate310in the second area Y may be removed so that the metal layer312(hereinafter, the “first metal layer312a”) may be provided only in the first area X. In other words, a look at the top of the substrate310shows that the first metal layer312amay be provided in the first area X, and the first metal layer312amay be removed from the second area Y to expose the top surface of the dielectric layer311. In this condition, the shield340may be provided on the top of the dielectric layer311in the second area Y where the first metal layer312ahas been removed. The second metal layer312bmay be provided on the whole or partial surface in the first area X and second area Y on the bottom of the substrate310, and the resonance pattern portion330may be patterned on the surface of the second metal layer312bin the second area Y, which is stacked on the bottom of the substrate310, specifically the bottom of the dielectric layer31.

A circuit portion on the top of the substrate310may be electrically connected with a circuit portion providable on the bottom of the substrate310, and a first via hole350may be provided through the dielectric layer311in the first area X to electrically connect the top and bottom of the substrate310so as to allow for electrical connection between the circuit portion and electronic parts implemented on the second metal layer312bon the bottom surface so that the resonance pattern portion330stacked on the bottom of the substrate310may be electrically connected with the circuit portion.

Further, as set forth above, the shield340may be seated on the top of the dielectric layer311in the second area Y to shield magnetic fields generated by noise or eddy current for stable operation when the resonance pattern portion330is driven.

FIG. 13is a view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

FIG. 14is a plan view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 13 and 14, a wireless power receiver300may include a substrate310, a circuit portion, a resonance pattern portion330, and a shield340.

The wireless power receiver300in the instant embodiment differs from the wireless power receiver300described above in connection withFIGS. 4 to 12in the position of the first area X where the circuit portion is mounted and the second area Y where the resonance pattern portion330is mounted.

Specifically, in the wireless power receiver300according to the instant embodiment, the substrate310may be partitioned into the first area X where the circuit portion is located and the second area Y where the resonance pattern portion330is mounted, wherein the first area X is an inside area of the substrate310, specifically a central area of the substrate310, and the second area Y is an area around the first area X. That is, a surrounding area of the substrate310may be the second area Y where the resonance pattern portion330is mounted, and the first area X may be positioned inside the second area Y to have the circuit portion mounted therein.

The substrate310, the circuit portion, and the resonance pattern portion330have been described above, and no repetitive description thereof is given. For example, the substrate310having at least one or more dielectric layers311and at least one or more metal layers312stacked may be partitioned into two areas (however, in the instant embodiment, the two areas differ in position from each other) where the circuit portion and the resonance pattern portion330, respectively, are provided, and accordingly, a receiving module320and resonance pattern portion330for wireless charging may be mounted on the single substrate310.

According to an embodiment of the present disclosure, the substrate300of the wireless power receiver300may be a single-layered substrate310and multi-layered substrate310depending on the stacking of the dielectric layers311and the metal layers312. For example, as shown inFIG. 15, the substrate310may have a single-layered structure where one metal layer312is stacked on the top of one dielectric layer311. For example, as shown inFIGS. 16, 18, and 19, the substrate310may have a multi-layered structure where two metal layers312are stacked on both surfaces of one dielectric layer311, i.e., on the top and bottom of the dielectric layer311. As shown inFIG. 21 or 22, the substrate310may have a two-layered structure that includes a first area X formed in a two-layered structure, specifically, where one dielectric layer311is provided and metal layers312are disposed on both surfaces of the dielectric layer311, and a second area Y where no metal layer312is formed on one of the top and bottom of the dielectric layer311so that the metal layer312is formed on only one surface of the dielectric layer311.

According to an embodiment of the present disclosure, in the wireless power receiver, the first area X may be an inside central portion of the substrate310, and the second area Y may be a surrounding portion around the substrate310, which is an outer surrounding portion of the first area X, but various embodiments of the present disclosure are not limited thereto. For example, the first area X may be off the center of the substrate310in the first area X to a side thereof, and the first area X may be an outside surrounding portion of the second area Y. As such, the position of the first area X and the second area Y may be varied.

Hereinafter, an example in which the first area X and the second area Y are implemented at two opposite sides, respectively, of the substrate310and the substrate310is formed in a single-layered structure is described with reference toFIG. 15.

FIG. 15is a view illustrating an example where a receiving module and resonance pattern portion are mounted on a substrate having a layered structure in a wireless power receiver according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the substrate310may have a single-layered structure, and the substrate may be provided with one dielectric layer311and one metal layer312formed on the dielectric layer311. The substrate310having the dielectric layer311and the metal layer312formed on the top of the dielectric layer311may be partitioned into a first area X that is the center of the substrate310and has a circuit portion installed therein and a second area Y positioned around the first area X, corresponding to a surrounding area of the substrate310, and having the resonance pattern portion330installed therein. In this embodiment, the circuit portion may be mounted on a first surface (in this embodiment, this corresponds to the top of the substrate310) of the substrate310in the first area X that is the center of the substrate310, specifically on the top surface of the metal layer312stacked on the top of the dielectric layer311, and the resonance pattern portion330may be mounted on a first surface (in this embodiment, this corresponds to the top of the substrate310) of the substrate310in the second area Y that is a surrounding area of the substrate310, specifically on the top surface of the metal layer312stacked on the top of the dielectric layer311.

The circuit portion may be an electronic part including the receiving module320and may be a component that may be mounted in the first area X of the substrate310, specifically on the first surface of the substrate310in the first area X to electrically connect with the top surface of the metal layer312.

The resonance pattern portion330may be implemented on a surrounding portion of the first surface of the substrate310, specifically on a surrounding portion of the metal layer312stacked on the top of the dielectric layer311. According to an embodiment of the present disclosure, the resonance pattern portion330may be an antenna pattern capable of receiving wireless power and may be formed as a conductive line(s) with a preset pattern such as a loop or spiral, and although not shown, each conductive line may have a predetermined line width. The resonance pattern portion330may be formed of a predetermined pattern of a metal, such as gold, silver, or copper, or an alloy.

The shield340may be mounted on the top of the substrate310, specifically on the second area Y of the substrate310with a thickness that measures the height of the receiving module320mounted on the top of the substrate310around the receiving module320.

According to an embodiment of the present disclosure, although an example is described in which the substrate310has a single-layered structure while the circuit portion is provided in the first area X that is the central portion of the substrate310, and the resonance pattern portion330is provided in the second area Y at an opposite side of the substrate310, the stacked structure of the substrate310is not limited thereto.

For example, when the substrate310has a structure of two or more layers, i.e., a multi-layered structure, the circuit portion may be provided on the first surface of the first area X that is the central portion of the substrate310, and at least one or more resonance pattern portions330may be provided in the second area Y along the surrounding portion of the substrate310, and in such case, there may be provided a via hole electrically connected with the circuit portion and allowing for electrical connection of the resonance pattern portions330provided on at least one or more layers.

As described above, one substrate310may be provided, the circuit portion having the receiving module320electrically connected with the resonance pattern portion330may be mounted at a side on a surface of the substrate310, and the resonance pattern portion330may be mounted at an opposite side on the surface of the substrate310. Thus, the process for the wireless power receiver300may be done on the single substrate310. Further, the shield340may be mounted with the height of the electronic part such as the receiving module320implemented on the circuit portion.

Hereinafter, an example in which the first area X and the second area Y are implemented at two opposite sides, respectively, of the substrate310and the substrate310has a two-layered structure is described with reference toFIGS. 16 to 22.FIGS. 16 and 17are views illustrating an example where the resonance pattern portion is provided on both surfaces of the circuit portion, andFIGS. 18 to 22are views illustrating an example where the resonance pattern portion is provided on a surface of the substrate. Further, the above description applies to the same structure or configuration given above.

FIG. 16is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on both surfaces of a second area Y of the substrate in a wireless power receiver300according to an embodiment of the present disclosure.

FIG. 17is a plan view schematically illustrating a wireless power receiver having a substrate with a two-layered structure in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 16 and 17, a substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b).

As described above, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a central portion inside the substrate310and a second area Y positioned around the first area X and corresponding to a surrounding portion of the substrate310as if the second area Y surrounds the first area X.

The circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X of the substrate310.

The resonance pattern portion330may include a first resonance pattern331mounted on the first metal layer312ain the second area Y and a second resonance pattern332mounted on the second metal layer312bin the second area Y.

Further, at least one or more first via holes350may be formed through the dielectric layer311in the first area X of the substrate310to electrically connect a first surface of the substrate310with a second surface of the substrate310, which is an opposite surface of the first surface. The circuit portion may be disposed on both the top and bottom of the first area X.

At least one or more second via holes360may be provided through the dielectric layer311in the second area Y to electrically connect a first surface of the second area Y with a second surface of the second area Y, which is an opposite surface of the first surface, specifically the first metal layer312a, the first resonance pattern331provided on the first metal layer312a, the second metal layer312b, and the second resonance pattern332provided on the second metal layer312b.

The shield340may be provided on the first metal layer312aalong the surrounding portion of the receiving module320mounted on the circuit portion with respect to the receiving module320to shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the first and second resonance patterns331and332. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

As described above, the circuit portion where the receiving module320electrically connected with the resonance pattern portion330is mounted is provided at the central portion of the first surface of the substrate310, and the resonance pattern portion330is patterned on the surrounding side of the first surface of the substrate310and the second surface that is the opposite surface of the first surface. Thus, the process for the wireless power receiver300may be complete on the single substrate310. Further, the shield340may be mounted with the height of the electronic part such as the receiving module320implemented on the circuit portion.

Hereinafter, an example in which the resonance pattern portion is positioned on at least one of a first surface of the dielectric layer or a second surface of the dielectric layer, which is an opposite surface of the first surface, is described with reference toFIGS. 18 to 22.

FIG. 18is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on a second surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 18, as described above in connection withFIG. 16, a substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b). Further, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a central portion inside the substrate310, and a second area Y positioned around the first area X and corresponding to an opposite side of the substrate310.

According to an embodiment of the present disclosure, the circuit portion may be mounted in the first area X in the first surface of the substrate310, specifically on the first metal layer312ain the first area X of the substrate310. According to an embodiment of the present disclosure, the resonance pattern portion330may be provided on a second surface of the substrate310, which is an opposite surface of the first surface of the substrate310, specifically on the second metal layer312bin the second area Y of the substrate310. Further, as the second metal layer312band the resonance pattern portion330are positioned at a lower portion of the dielectric layer311, a first via hole350may be implemented in the first area X to connect together the top and bottom of the substrate310so as to electrically connect with the circuit portion or the receiving module320.

Further, the shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion330. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 19is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on a first surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

FIG. 20is a plan view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 19 and 20, as described above in connection withFIG. 18, a substrate310may have a multi-layered structure, specifically a two-layered structure. The substrate310may have one dielectric layer311and metal layers312formed on both surfaces, respectively, of the dielectric layer311(in this embodiment, the top and bottom of the dielectric layer311or first and second surfaces of the dielectric layer311, and the metal layer312formed on the top of the dielectric layer311is referred to as a first metal layer312aand the metal layer312formed on the bottom of the dielectric layer311is referred to as a second metal layer312b). Further, the substrate310may be partitioned into two areas, specifically, a first area X corresponding to a central portion of the substrate310, and a second area Y corresponding to a surrounding portion of the first area X.

However, a difference from the wireless power receiver300described above in connection withFIG. 18lies in the position where the resonance pattern portion330is mounted. In other words, according to an embodiment of the present disclosure, the circuit portion may be mounted in the first area X in the first surface of the substrate310, specifically on the first metal layer312ain the first area X of the substrate310. Further, according to an embodiment of the present disclosure, the resonance pattern portion330may be provided on the first surface of the substrate310, specifically on the first metal layer312ain the second area Y of the substrate310. Further, a first via hole350may be implemented in the first area X to connect together the top and bottom of the substrate310so as to electrically connect the circuit portion with the parts mounted on the second metal layer312bin the first area X.

Further, the shield340may be provided on a surrounding portion of the first metal layer312aof the substrate310outside the receiving module320. That is, the shield340may be shaped as a doughnut having an empty space in the center thereof, with the receiving module320seated in the empty space. The shield340may be provided to shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion330. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 21is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided in a first area X of a first surface of the substrate and a resonance pattern portion is mounted on the top surface of a dielectric layer in a second area Y of the first surface of the substrate, with a metal layer removed, in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 21, a substrate310may have a multi-layered structure, specifically a two-layered structure, as described above in connection withFIG. 16, and the substrate310may include a dielectric layer311and a metal layer312. Particularly in the instant embodiment, the substrate310may have one dielectric layer311.

The metal layer312may include a first metal layer312aand a second metal layer312brespectively formed on the first and second surfaces of the dielectric layer311. The metal layers312may be provided on both surfaces of the first metal layer in the first area X positioned at a central portion of the substrate310, and the metal layer312may be provided to be mounted on only one surface or opposite surface (in this embodiment, the bottom or opposite surface) in the second area Y of the substrate310. That is, the second metal layer312bmounted on the second surface of the substrate310may be stacked on the whole or partial second surface of the dielectric layer311, and the first metal layer312amounted on the first surface of the substrate310may be stacked on the whole or partial first surface of the dielectric layer311at the position of the first area X. A look at the first surface of the substrate310shows that the first metal layer312amay be stacked only at the central portion corresponding to the first area X of the dielectric layer311, and the first metal layer312amay be removed from the surrounding portion corresponding to the second area Y of the dielectric layer311, exposing the top surface of the dielectric layer311.

In this condition, the resonance pattern portion330may be immediately patterned on the top of the dielectric layer311in the second area Y where the first metal layer312ahas been removed.

According to an embodiment of the present disclosure, the circuit portion may be mounted in the first area X, specifically on the first metal layer312ain the first area X. Further, the receiving module320may be mounted on the circuit portion, and a doughnut-shaped resonance pattern portion330may be mounted on the resonance pattern portion330patterned along the surrounding portion of the circuit portion.

The first via hole350may be provided through the dielectric layer311in the first area X to electrically connect the top and bottom of the substrate310in order to allow for electrical connection between the two metal layers with respect to the dielectric layer311.

The shield340may be provided on the first metal layer312ato shield magnetic fields generated by noise or eddy current for stable operation when power is applied to the resonance pattern portion330. The shield340may be implemented in the form of a film or may be formed of a material with higher permeability and low loss characteristics.

FIG. 22is a view illustrating an example of a substrate with a two-layered structure where a circuit portion is provided on a first surface of a first area X of the substrate and a resonance pattern portion is mounted on the metal layer provided on a second surface of a second area Y of the substrate in a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIG. 22, a substrate310may have a multi-layered structure, specifically a two-layered structure, as described above in connection withFIG. 21, and the substrate310may include a dielectric layer311and a metal layer312. According to an embodiment of the present disclosure, the substrate310may be partitioned into a first area X that is a central portion of the substrate310and has a circuit portion mounted therein and a second area Y that is a surrounding portion of the first area X and has a resonance pattern portion330mounted therein. A difference from the embodiment described above in connection withFIG. 21lies in that, while in the above embodiment, the resonance pattern portion330is directly patterned on the surface of the dielectric layer311in the second area Y where the first metal layer312ais removed as a first surface of the dielectric layer311, the shield340is immediately mounted in the second area Y of the substrate310where the first metal layer312ais removed, and the resonance pattern portion330is patterned on a second surface, which is an opposite surface of the first surface of the substrate310, specifically in the second area Y of the second metal layer312bin the instant embodiment.

Specifically, in the instant embodiment, one dielectric layer311may be provided, and metal layers312may be provided on both surfaces in the first area X positioned at a side of the substrate310, and the metal layer312may be provided to be mounted on only one surface or opposite surface (in this embodiment, the bottom or opposite surface) in the second area Y of the substrate310. That is, the metal layer312stacked on the top of the substrate310in the second area Y may be removed so that the metal layer312(hereinafter, the “first metal layer312a”) may be provided only in the first area X. In other words, a look at the top of the substrate310shows that the first metal layer312amay be provided in the first area X, and the first metal layer312amay be removed from the second area Y to expose the top surface of the dielectric layer311. In this condition, the shield340may be provided on the top of the dielectric layer311in the second area Y where the first metal layer312ahas been removed. The second metal layer312bmay be provided on the whole or partial surface in the first area X and second area Y on the bottom of the substrate310, and the resonance pattern portion330may be patterned on the surface of the second metal layer312bin the second area Y, which is stacked on the bottom of the substrate310, specifically the bottom of the dielectric layer31.

The first metal layer312aand the second metal layer312bmay be electrically connected with each other with respect to the dielectric layer311, and the first via hole350may be provided through the top and bottom of the substrate310in the first area X to allow the resonance pattern portion330stacked on the bottom of the substrate310to be electrically connected with the receiving module320and the circuit portion.

Further, as set forth above, the shield340may be seated on the top of the dielectric layer311in the second area Y to shield magnetic fields generated by noise or eddy current for stable operation when the resonance pattern portion330is driven.

As shown inFIGS. 23 to 33, a multi-layered substrate may be provided which includes at least two or more dielectric layers or a plurality of dielectric layers and a plurality of metal layers. According to an embodiment, the substrate may have a four-layered structure for the purpose of description. Accordingly, the dielectric layers may include three layers, e.g., a first dielectric layer to a third dielectric layer, and the metal layers may include four metal layers stacked from the top of the first dielectric layer to the bottom of the third dielectric layer.

According to an embodiment of the present disclosure, the wireless power receiver may include a substrate, a circuit portion, a resonance pattern portion, and a shield. The configuration of the circuit portion, the resonance pattern portion, and the shield has been described above, and the above description may apply to specific configurations or functions thereof (refer toFIGS. 23 to 33).

As set forth above, according to an embodiment of the present disclosure, the substrate may include a plurality of dielectric layers and a plurality of metal layers stacked on the dielectric layers. According to an embodiment of the present disclosure, the circuit portion and the resonance pattern portion may together be mounted on the substrate. To that end, the substrate may be partitioned into a circuit portion mount area X where the circuit portion is mounted and a resonance pattern mount area Y where the resonance pattern portion430is mounted.

For example, as shown inFIGS. 23 to 33, the substrate may have a four-layered structure in which three dielectric layers and four metal layers are stacked. That is, the dielectric layers may include a first dielectric layer, a second dielectric layer, and a third dielectric layer on the top of the substrate, and a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer may be stacked from the top of the first dielectric layer alternately with the dielectric layers. As described above, in the instant embodiment, the substrate has a four-layered structure for the purpose of description, but the structure of the substrate is not limited to such multi-layered structure or stacked structure. For example, the substrate may have a seven-layered structure or may have more layers.

First, as shown inFIGS. 23 to 25, a wireless power receiver having the multi-layered substrate, the circuit portion mount area X and the resonance pattern mount area Y is described according to an embodiment of the present disclosure.

FIG. 23is a view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 24is a cross-sectional view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 25is a plan view schematically illustrating a wireless power receiver according to an embodiment of the present disclosure.

Referring toFIGS. 23 to 25, a wireless power receiver400may be implemented with three dielectric layers411and four metal layers412stacked alternately. Specifically, the dielectric layers411may include, from top to down, a first dielectric layer411a, a second dielectric layer411b, and a third dielectric layer411c. The first metal layer412ato the fourth metal layer412dmay alternately be stacked from the top of the first dielectric layer411ato the bottom of the third dielectric layer411c.

A circuit portion and a resonance pattern portion430may together be implemented on a substrate410having such stack. That is, the substrate410may be partitioned into a circuit portion mount area X where the circuit portion having a receiving module420is provided and a resonance pattern mount area Y where the resonance pattern portion430is provided.

According to an embodiment of the present disclosure, the circuit portion mount area X may be positioned at a side on the top of the substrate410. Specifically, the circuit portion mount area X may be an area positioned at a side of the first dielectric layer411aand the first and second metal layers412aand412bdisposed on the top and bottom of the first dielectric layer411a.

According to an embodiment of the present disclosure, the resonance pattern mount area Y may be an area positioned adjacent to the circuit portion mount area X, i.e., an area including the other side and bottom area of the circuit portion mount area X. The resonance pattern mount area Y may include a first section Y1that is a lower portion of the substrate410and a second section Y2that is an upper portion at another side of the substrate410. Specifically, the first section Y1may be the overall area of the third dielectric layer411cand the third and fourth metal layers412provided on the top and bottom of the third dielectric layer411c, and the second section Y2may be an area at another side of the first metal layer412a, the first dielectric layer411a, the second metal layer412b, and the second dielectric layer411b. That is, the resonance pattern mount area may be overall, substantially, L-shaped.

The circuit portion mount area X may have at least one or more first via holes450formed through the dielectric layers411to electrically connect the circuit portion provided on the metal layers412. Further, the resonance pattern mount area Y may have a second via hole460to electrically connect the resonance pattern portion430disposed in the first section Y1with the resonance pattern portion430disposed in the second section Y2.

That is, as viewed from the first section Y1, a plurality of second via holes460(hereinafter, referred to as2Ath via holes) may be formed through the third dielectric layer411cto connect the third metal layer412cwith the fourth metal layer412d. Further, as viewed from the second section Y2, a second via hole460(hereinafter, referred to as a2Bth via hole) may be formed through the first dielectric layer411ato electrically connect the first and second metal layers412aand412b, through the second dielectric layer411bto electrically connect the second and third metal layers412cand412d, and through the third dielectric layer411cto electrically connect the third and fourth metal layers412cand412d.

Further, the shield440may be provided on the surface of the first metal layer412aat another side of the circuit portion where the receiving module420is provided.

As described above, since the circuit portion having the receiving module420and the resonance pattern portion430may together be provided on the same board also in the multi-layered substrate410, the process for the wireless power receiver400may be complete on the single substrate410. Further, the shield440may be mounted with the height of the electronic part such as the receiving module420implemented on the circuit portion.

FIG. 26is a view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 27is a cross-sectional view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

Referring toFIGS. 26 and 27, a wireless power receiver400may be implemented with three dielectric layers411and four metal layers412stacked alternately. Specifically, the dielectric layers411may include, from top to down, a first dielectric layer411a, a second dielectric layer411b, and a third dielectric layer411c. The first metal layer412ato the fourth metal layer412dmay alternately be stacked from the top of the first dielectric layer411ato the bottom of the third dielectric layer411c.

The circuit portion and the resonance pattern portion430may together be implemented on the substrate410having such stack. That is, the substrate410may be partitioned into a circuit portion mount area X where the circuit portion having a receiving module420is provided and a resonance pattern mount area Y where the resonance pattern portion430is provided.

Here, a difference between the instant embodiment and the embodiment described above in connection withFIGS. 23 to 25is the position of the circuit portion mount area X and the resonance pattern mount area Y.

Specifically, according to an embodiment of the present disclosure, the circuit portion mount area X may be positioned at an upper portion inside the substrate410. Specifically, the circuit portion mount area X may be an area positioned at a central portion of the first dielectric layer411aand the first and second metal layers412aand412bdisposed on the top and bottom of the first dielectric layer411a.

According to an embodiment of the present disclosure, the resonance pattern mount area Y may be an area positioned adjacent to the circuit portion mount area X and may include a first section Y1that is a lower portion of the substrate410and a second section Y2that is an upper, surrounding portion inside the substrate410.

Specifically, the first section Y1may be the overall area of the third dielectric layer411cand the third and fourth metal layers412cand412dprovided on the top and bottom of the third dielectric layer411c, and the second section Y2may be an upper, surrounding area inside the substrate410and a surrounding area of the first metal layer412a, the first dielectric layer411a, the second metal layer412b, and the second dielectric layer411b.

The resonance pattern mount area Y may be substantially shaped as the letter “U.”

The circuit portion mount area X may have at least one or more first via holes450formed through the dielectric layers411to electrically connect the circuit portion provided on the metal layers412. Further, the resonance pattern mount area Y may have a second via hole460to electrically connect the resonance pattern portion430disposed in the first section Y1with the resonance pattern portion430disposed in the second section Y2.

That is, as viewed from the first section Y1, a second via hole460(hereinafter, referred to as a2Ath via hole) may be formed through the third dielectric layer411cto connect the third metal layer412cwith the fourth metal layer412d. Further, as viewed from the second section Y2, a second via hole460(hereinafter, referred to as a2Bth via hole) may be formed through the first dielectric layer411ato electrically connect the first and second metal layers412aand412b, through the second dielectric layer411bto electrically connect the second and third metal layers412cand412d, and through the third dielectric layer411cto electrically connect the third and fourth metal layers412cand412d.

Further, the shield440may be provided on the surface of the first metal layer412aat another side of the circuit portion where the receiving module420is provided.

As described above, since the circuit portion having the receiving module420and the resonance pattern portion430may together be provided on the same board also in the multi-layered substrate410, the process for the wireless power receiver400may be complete on the single substrate410. Further, the shield440may be mounted with the height of the electronic part such as the receiving module420implemented on the circuit portion.

FIG. 28is a view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 29is a cross-sectional view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 30is a plan view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

Referring toFIGS. 28 to 30, a wireless power receiver400may be implemented with three dielectric layers411and four metal layers412stacked alternately. Specifically, the dielectric layers411may include, from top to down, a first dielectric layer411a, a second dielectric layer411b, and a third dielectric layer411c. The first metal layer412ato the fourth metal layer412dmay alternately be stacked from the top of the first dielectric layer411ato the bottom of the third dielectric layer411c. The circuit portion and the resonance pattern portion430may together be implemented on the substrate410having such stack. Here, a difference between the instant embodiment and the embodiment described above in connection withFIGS. 23 to 25lies in whether there are some metal layers412and the position of the resonance pattern mount area Y. That is, as shown inFIGS. 23 to 25, the first, second, third, and fourth metal layers412a,412b,412c, and412dare structured to be stacked on the whole or part of the overall surface of the first, second, and third dielectric layers411a,411b, and411c. By contrast, a look at the first, second, third, and fourth metal layers412a,412b,412c, and412daccording to the instant embodiment shows that the third and fourth metal layers412cand412dare stacked on the whole or part of the overall surface of the third dielectric layer411cwhile the first and second metal layers412aand412bare provided on the top and bottom of the first dielectric layer411aonly in the circuit portion mount area X, i.e., only at a side of the first dielectric layer411aand removed from the other side of the first dielectric layer411a.

According to an embodiment of the present disclosure, the first metal layer412aand the second metal layer412bare provided at a side on the top and bottom of the first dielectric layer411aonly in the circuit portion mount area X and removed from the other side on the top and bottom of the first dielectric layer411a, so that the first and second metal layers412aand412bare not stacked in the second section Y2as described below.

Further, the resonance pattern portion430may be implemented on at least one surface of the lowermost dielectric layer (the third dielectric layer411c) and the third and fourth metal layers412cand412dstacked on the top and bottom of the third dielectric layer411cso that an overall or partial lower portion of the substrate410may be implemented as the resonance pattern mount area.

According to an embodiment of the present disclosure, the circuit portion mount area X may be positioned at an upper portion at a side of the substrate410. Specifically, the circuit portion mount area X may be an area positioned at a side of the first dielectric layer411aand the first and second metal layers412aand412bdisposed on the top and bottom of the first dielectric layer411a.

According to an embodiment of the present disclosure, the resonance pattern mount area Y may be a lower portion of the circuit portion mount area X, i.e., the first section Y1in the lower portion of the substrate410. That is, the area is the overall area of the third dielectric layer411cand the third and fourth metal layers412cand412dprovided on the top and bottom of the third dielectric layer411c. That is, as shown inFIGS. 23 to 25, the resonance pattern portion430is not mounted in the second section Y2. In the embodiment, although the resonance pattern portion430is mounted in the first section Y1but not in the second section Y2, its opposite structure may be implemented as well. That is, for example, an electronic part may be mounted in the first section Y1, and the resonance pattern portion430may be mounted on at least one surface of the top and bottom of the first dielectric layer411aor the top of the second dielectric layer411bin the second section Y2.

The circuit portion mount area X may have at least one or more first via holes450formed through the dielectric layers411to electrically connect the circuit portion provided on the metal layers412. Further, the resonance pattern mount area Y may have a second via hole460to electrically connect the resonance pattern portion430disposed in the first section Y1with the resonance pattern portion430disposed in the second section Y2.

That is, as viewed from the first section Y1, a plurality of second via holes460may be formed through the third dielectric layer411cto connect the third metal layer412cwith the fourth metal layer412d.

Further, the shield440may be provided on the surface of the first metal layer412aat another side of the circuit portion where the receiving module420is provided.

As described above, since the circuit portion having the receiving module420and the resonance pattern portion430may together be provided on the same board also in the multi-layered substrate410, the wireless power receiver400may be formed on the single substrate410. Further, the shield440may be mounted with the height of the electronic part such as the receiving module420implemented on the circuit portion.

FIG. 31is a view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

FIG. 32is a cross-sectional view schematically illustrating a wireless power receiver having a multi-layered substrate, a circuit portion mount area X, and a resonance pattern mount area Y according to an embodiment of the present disclosure.

Referring toFIGS. 31 and 32, a wireless power receiver400may be implemented with three dielectric layers411and four metal layers412stacked alternately. Specifically, the dielectric layers411may include, from top to down, a first dielectric layer411a, a second dielectric layer411b, and a third dielectric layer411c. The first metal layer412ato the fourth metal layer412dmay alternately be stacked from the top of the first dielectric layer411ato the bottom of the third dielectric layer411c.

The circuit portion and the resonance pattern portion430may together be implemented on the substrate410having such stack. Here, a difference between the instant embodiment and the embodiment described above in connection withFIGS. 26 and 27lies in whether there are some metal layers412and the position of the resonance pattern mount area Y. That is, as shown inFIGS. 26 and 27, the first, second, third, and fourth metal layers412a,412b,412c, and412dare structured to be stacked on the whole or part of the overall surface of the first, second, and third dielectric layers411a,411b, and411c. By contrast, a look at the first, second, third, and fourth metal layers412a,412b,412c, and412daccording to the instant embodiment shows that the third and fourth metal layers412cand412dare stacked on the whole or part of the overall surface of the third dielectric layer411cwhile the first and second metal layers412aand412bare provided on the top and bottom of the first dielectric layer411aonly in the circuit portion mount area X, i.e., only at a central portion inside the first dielectric layer411aand removed from the surrounding portion on the top and bottom of the first dielectric layer411a.

According to an embodiment of the present disclosure, the first metal layer412aand the second metal layer412bare provided at an inside central portion on the top and bottom of the first dielectric layer411aonly in the circuit portion mount area X, and the first and second metal layers412aand412bat the surrounding portion on the top and bottom of the first dielectric layer411aare removed from the other side on the top and bottom of the first dielectric layer411a, so that the first and second metal layers412aand412bare not stacked in the second section Y2as described below.

Further, the resonance pattern portion430may be implemented on at least one surface of the lowermost dielectric layer (the third dielectric layer411c) and the third and fourth metal layers412cand412dstacked on the top and bottom of the third dielectric layer411cso that an overall or partial lower portion of the substrate410may be implemented as the resonance pattern mount area Y.

According to an embodiment of the present disclosure, the circuit portion mount area X may be positioned at an upper portion at a side of the substrate410. Specifically, the circuit portion mount area X may be an area positioned at an inside, central portion of the first dielectric layer411aand the first and second metal layers412aand412bdisposed on the top and bottom of the first dielectric layer411a.

According to an embodiment of the present disclosure, the resonance pattern mount area Y may be a lower portion of the circuit portion mount area X, i.e., the first section Y1in the lower portion of the substrate410. That is, the area is the overall area of the third dielectric layer411cand the third and fourth metal layers412cand412dprovided on the top and bottom of the third dielectric layer411c. That is, as shown inFIGS. 23 to 25, the resonance pattern portion430is not mounted in the second section Y2. In the embodiment, although the resonance pattern portion430is mounted in the first section Y1but not in the second section Y2, its opposite structure may be implemented as well. That is, for example, an electronic part may be mounted in the first section Y1, and the resonance pattern portion430may be mounted on at least one surface of the top and bottom of the first dielectric layer411aor the top of the second dielectric layer411bin the second section Y2.

The circuit portion mount area X may have at least one or more first via holes450formed through the dielectric layers411to electrically connect the circuit portion provided on the metal layers412. Further, the resonance pattern mount area Y may have a second via hole460to electrically connect the resonance pattern portion430disposed in the first section Y1with the resonance pattern portion430disposed in the second section Y2.

That is, as viewed from the first section Y1, a plurality of second via holes460may be formed through the third dielectric layer411cto connect the third metal layer412cwith the fourth metal layer412d.

Further, the shield440may be provided on the surface of the first metal layer412aat another side of the circuit portion where the receiving module420is provided.

As described above, since the circuit portion having the receiving module420and the resonance pattern portion430may together be provided on the same board also in the multi-layered substrate410, the wireless power receiver400may be formed on the single substrate410. Further, the shield440may be mounted with the height of the electronic part such as the receiving module420implemented on the circuit portion.