Wearable device comprising display and NFC antenna

Abstract

This wearable device may comprise: a display; a conductive sheet attached below the display; a near field communication (NFC) circuit; and a coil extending around a periphery of the conductive sheet. The conductive sheet may be electrically connected to a ground of the wearable device at a first point of a first side from among a plurality of sides of the conductive sheet. A first end of the coil may be electrically connected to the NFC circuit. A second end of the coil may be electrically connected to a second point of the first side of the conductive sheet electrically connected to the ground.

Description

Wearable device including a display and an NFC antenna

[0001] The present disclosure relates to a wearable device comprising a display and a near field communication (NFC) antenna.

[0002] Portable communication devices may include various types of devices such as smartphones, tablets, and wearable devices. Among these, wearable devices can provide various biometric parameters of the user, such as body temperature, heart rate, blood sugar, sleep patterns, and activity levels.

[0003] Such a wearable device may include a display for providing visual information to a user and an antenna for communicating with another device. For example, the wearable device may include an antenna for NFC (near field communication). NFC is a short-range communication and can be used to communicate with the other device at a short distance using the NFC standard protocol.

[0004] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art in relation to the present disclosure.

[0005] A wearable device may include a display, a conductive sheet attached below the display, an NFC (near field communication) circuit, and a coil extending around the conductive sheet. The conductive sheet may be electrically connected to the ground of the wearable device at a first point on a first side among a plurality of sides of the conductive sheet. A first end of the coil may be electrically connected to the NFC circuit. A second end of the coil may be electrically connected to a second point on the first side of the conductive sheet that is electrically connected to the ground.

[0006] A wearable device may include a display, a conductive sheet attached below the display and comprising a first side and a second side opposite to the first side, an NFC (near field communication) circuit, and a coil extending around the conductive sheet. The conductive sheet may be electrically connected to the ground of the wearable device at a first point on the first side. A first end of the coil may be electrically connected to the NFC circuit. A second end of the coil may be electrically connected to a second point on the second side of the conductive sheet that is electrically connected to the ground.

[0007] A wearable device may include a display, a conductive sheet attached below the display, an NFC (near field communication) circuit, and a coil extending around the conductive sheet. The conductive sheet may be electrically connected to the NFC circuit at a first point on a first side among a plurality of sides of the conductive sheet. A first end of the coil may be electrically connected to a second point on the first side of the conductive sheet that is electrically connected to the NFC circuit. A second end of the coil may be electrically connected to the ground of the wearable device.

[0008] FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments.

[0009] FIG. 2 shows a wearable device according to one embodiment.

[0010] FIG. 3a is a cross-sectional view of a wearable device according to one embodiment.

[0011] FIG. 3b is a plan view showing a coil of a wearable device according to one embodiment.

[0012] FIG. 4a is a cross-sectional view of a wearable device according to one embodiment. FIG. 4b is a plan view showing a coil of a wearable device according to one embodiment.

[0013] FIGS. 5A, FIGS. 5B, and FIGS. 5C show examples of the locations of points on a conductive sheet connected to the ground and coil of a wearable device according to one embodiment.

[0014] FIGS. 6A, 6B, 6C, and 6D show the magnetic field distribution of a wearable device according to one embodiment, based on the positions of points on a conductive sheet connected to the ground and coil of the wearable device.

[0015] FIG. 7a shows a wearable device according to one embodiment.

[0016] FIGS. 7B, FIGS. 7C, FIGS. 7D, FIGS. 7E, and FIGS. 7F show the magnetic field distribution of a wearable device according to the material of the housing according to one embodiment.

[0017] FIGS. 8a, FIGS. 8b, and FIGS. 8c show various examples of coils of a wearable device according to one embodiment.

[0018] FIGS. 9a, 9b, and 9c show a conductive sheet and a coil of a wearable device according to one embodiment.

[0019] FIGS. 10a, FIGS. 10b, and FIGS. 10c show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0020] FIGS. 11a, FIGS. 11b, FIGS. 11c, FIGS. 11d, FIGS. 11e, and FIGS. 11f show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0021] FIGS. 12a, FIGS. 12b, FIGS. 12c, and FIGS. 12d show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0022] FIGS. 13, 14, and 15 illustrate various examples of an electronic device comprising a conductive sheet and a coil according to one embodiment.

[0023] In the drawings of the present disclosure, the same reference numerals may be assigned to identical components, and redundant descriptions of components having the same reference numeral may not be repeated. Additionally, in descriptions referring to a specific drawing, reference numerals of other drawings may be referenced.

[0024] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to various embodiments.

[0025] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or with at least one of an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In some embodiments, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In some embodiments, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0026] The processor (120) can control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., a program (140)), and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use lower power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0027] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (108)). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model may include a plurality of artificial neural network layers.An artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0028] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0029] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0030] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0031] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0032] The display module (160) can visually provide information to an external (e.g., user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling said device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of the force generated by said touch.

[0033] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphones) connected directly or wirelessly to the electronic device (101).

[0034] The sensor module (176) can detect the operating state of the electronic device (101) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0035] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0036] The connection terminal (178) may include a connector through which the electronic device (101) can be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0037] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0038] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0039] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0040] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0041] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (194) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device (104) through a first network (198) (e.g., a short-range communication network such as Bluetooth, Wi-Fi (wireless fidelity) direct or IrDA (infrared data association)) or a second network (199) (e.g., a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0042] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. NR access technology can support high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and connection of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), full-dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), external electronic device (e.g., electronic device (104)), or network system (e.g., second network (199)). According to one embodiment, the wireless communication module (192) can support a Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mMTC, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for realizing URLLC.

[0043] The antenna module (197) can transmit a signal or power to an external source (e.g., an external electronic device) or receive it from an external source. According to one embodiment, the antenna module (197) may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). The signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

[0044] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0045] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0046] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) through a server (108) connected to a second network (199). Each of the external electronic devices (102, or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations performed on the electronic device (101) may be performed on one or more of the external electronic devices (102, 104, or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) may request one or more external electronic devices to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the above request may execute at least part of the requested function or service, or additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may provide the result as is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or neural networks. According to one embodiment, the external electronic device (104) or the server (108) may be included within a second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0047] FIG. 2 shows a wearable device according to one embodiment.

[0048] Referring to FIG. 2, a wearable device (200) according to one embodiment may be an example of an electronic device (101) of FIG. 1. The wearable device (200) may be a ring-type electronic device, a smart ring, or a ring device.

[0049] In one embodiment, the wearable device (200) may include a ring-shaped housing (hereinafter housing) (220), a ring-shaped body (hereinafter body) (240) disposed inside the housing (220), and a window (250) supported by the housing (220). The housing (220) may be referred to as a frame, a ring-shaped frame, an outer housing, or an outer ring. The body (240) may be referred to as a housing, a ring-shaped housing, an inner housing, or an inner ring.

[0050] In one embodiment, the housing (220), the main body (240), and the window (250) may at least partially form the exterior of the wearable device (200). For example, the housing (220) and the window (250) may form the external front surface (200A) of the wearable device (200). The main body (240) may form the external rear surface (200B) of the wearable device (200) opposite to the external front surface (200A). The external rear surface (200B) of the wearable device (200) may be configured to come into contact with the body (e.g., fingers) of a user wearing the wearable device (200). An external lateral surface (200C) extending from the edge of the outer front surface (200A) of the wearable device (200) to the edge of the outer rear surface (200B) can be formed by a housing (220) and a main body (240).

[0051] In one embodiment, the window (250) may be disposed in the housing (220) so as to be exposed to the outside of the wearable device (200). For example, the window (250) may be formed to be substantially transparent. For example, the window (250) may be formed of substantially transparent glass and / or plastic. In one embodiment, the window (250) may be a window for a display of the wearable device (200) (e.g., the display module (160) of FIG. 1 and the display (360) of FIG. 3). For example, the display may be disposed on the back of the window (250), and light output from the display may be transmitted to the outside through the window (250).

[0052] In one embodiment, the wearable device (200) may include a printed circuit board (e.g., the printed circuit board (390) of FIG. 3a) and a battery (e.g., the battery (189) of FIG. 1) electrically connected to the printed circuit board. The printed circuit board and the battery may be, for example, at least partially disposed inside the main body (240). Various components of the wearable device (200), such as a processor (e.g., the processor (120) of FIG. 1), a memory (e.g., the memory (130) of FIG. 1), a communication module (e.g., the communication module (190) of FIG. 1), and a sensor module (e.g., the sensor module (176) of FIG. 1), may be disposed on the printed circuit board.

[0053] FIG. 3a is a cross-sectional view of a wearable device according to one embodiment. FIG. 3b is a plan view showing a coil of a wearable device according to one embodiment.

[0054] Referring to FIG. 3a, a wearable device (200) according to one embodiment may include a display (360) (e.g., a display module (160) of FIG. 1), a conductive sheet (370), and a coil (310). A wearable device (200) according to one embodiment may further include a printed circuit board (390), a flexible printed circuit board (362) connecting the display (360) to the printed circuit board (390), a flexible printed circuit board (or flexible printed circuit) (380) containing the coil (310) inside, and a ferrite sheet (382) attached under the flexible printed circuit board (380) to overlap the coil (310).

[0055] In one embodiment, the display (360) may be attached to the back surface of the window (250). The display (360) may include a display panel configured to output light. The display (360) may be electrically connected to a printed circuit board (390) via a flexible printed circuit board (362). The display (360) may be operated by a display driving circuit. The display (360) may be electrically connected to the display driving circuit via wiring (364) formed on the flexible printed circuit board (362). The display driving circuit may be placed on the flexible printed circuit board (362) or on the printed circuit board (390). In one embodiment, at least one of the window (250), the display driving circuit, the flexible printed circuit board (362), and / or the conductive sheet (370) may be understood to be included in the display (360) (or display assembly).

[0056] In one embodiment, the conductive sheet (370) may be attached to the back surface of the display (360). The conductive sheet (370) may be formed of a conductive material, for example, a metal such as copper. The conductive sheet (370) may be used to dissipate heat associated with the display (360) and / or to shield the display (360) from electromagnetic interference (EMI). Additionally, the conductive sheet (370) may be used together with the coil (310) as an antenna radiator for NFC of the wearable device (200).

[0057] In one embodiment, the coil (310) may be positioned below the display (360). For example, the coil (310) may be positioned substantially on the same plane as the conductive sheet (370) located below the display (360). To this end, the flexible printed circuit board (380) containing the coil (310) may include a space (e.g., an opening) on ​​the inside where the conductive sheet (370) is positioned. In one embodiment, the coil (310) may be used as an NFC antenna or an antenna radiator for NFC.

[0058] Although not illustrated, a wearable device (200) according to one embodiment may include an NFC circuit (e.g., an NFC IC (integrated circuit)) connected to the NFC antenna (e.g., a coil (310)). The NFC circuit may be configured to generate and process signals according to NFC communication. The NFC communication refers to a short-range wireless communication technology that transmits and receives signals in a band of about 13.56 MHz (e.g., from about 13.56 MHz to 13.57 MHz). The NFC communication is a wireless communication technology that enables two devices to recognize each other and exchange data in the frequency band. For example, the two devices may be referred to as a reader and a terminal. The reader generates a magnetic field, and the terminal can transmit and / or receive information from the reader through the magnetic field. The wearable device (200) may operate as the reader or as the terminal depending on the operating mode. The coil (310) and conductive sheet (370) constituting the NFC antenna may be configured to transmit or receive signals according to NFC communication.

[0059] In one embodiment, the front surface of the ferrite sheet (382) may be attached to the back surface of the flexible printed circuit board (380). The back surface of the ferrite sheet (382) may be attached to the housing (220) (or the main body (240)). The ferrite sheet (382) may shield the magnetic field transmitted or received using the NFC antenna (e.g., coil (310)) from being interfered with by other metal parts.

[0060] In one embodiment, the window (250), display (360), conductive sheet (370), and flexible printed circuit board (362), flexible printed circuit board (380), ferrite sheet (382), and printed circuit board (390) may be accommodated within a space formed or defined by the housing (220) and / or body (240).

[0061] Referring to FIG. 3b, in one embodiment, the conductive sheet (370) may include a plurality of sides. For example, the conductive sheet (370) may include a first side (371), a second side (372), a third side (373), and a fourth side (374). The second side (372) may be opposite to the first side (371). For example, not limited to, the second side (372) may be substantially parallel to the first side (371). The fourth side (374) may be opposite to the third side (373). For example, not limited to, the fourth side (374) may be substantially parallel to the third side (373). For example, not limited to, the third side (373) may connect one end of the first side (371) and the second side (372). For example, the fourth side (374) can connect the other ends of the first side (371) and the second side (372) without limitation.

[0062] In one embodiment, the coil (310) may extend around the conductive sheet (370). For example, the coil (310) may be wound a specified number of times with the conductive sheet (370) at the center (e.g., on a plane parallel to the conductive sheet (370)). In FIG. 3b, the coil (310) is shown wound three times around the conductive sheet (370), but is not limited thereto. In one embodiment, the coil (310) may be wound counterclockwise with respect to the direction extending from the first stage (310a) to the second stage (310b), as shown in FIG. 3b.

[0063] In one embodiment, the coil (310) may not overlap with the conductive sheet (370). According to one embodiment, the ferrite sheet (382) may overlap with the coil (310).

[0064] In one embodiment, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a point (P31). For example, the point (P31) of the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through the display driving circuit. For example, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through a conductive path (315) that interconnects the point (P31) and the ground terminal of the display driving circuit. The conductive path (315) may be formed, for example, within a flexible printed circuit board (362). For example, the conductive path (315) may be a wiring of the flexible printed circuit board (362) formed of a conductive material (e.g., copper). In one embodiment, the ground of the wearable device (200) may include at least one of a conductive portion included in the housing (220), a conductive portion included in the main body (240), a ground layer (or ground plane) of the printed circuit board (e.g., printed circuit board (390)) of the wearable device (200), and / or a negative terminal of the battery of the wearable device (200).

[0065] In one embodiment, the first end (310a) of the coil (310) may be electrically connected to the NFC circuit. The second end (310b) of the coil (310) may be electrically connected to a point (P32) of the conductive sheet (370). For example, a conductive connecting member such as a conductive contact, a conductive gasket, or a conductive foam may be used for electrical connection between the coil (310) and the conductive sheet (370). The coil (310) may be electrically connected to the ground of the wearable device (200) through the conductive sheet (370).

[0066] In one embodiment, a point (P32) of the conductive sheet (370) connected to the coil (310) and a point (P31) of the conductive sheet (370) connected to the ground of the wearable device (200) may be positioned to have the same phase. For example, a point (P32) of the conductive sheet (370) connected to the second terminal (310b) of the coil (310) may be located on the first side (371) among the plurality of sides of the conductive sheet (370). For example, but not limited to, a point (P32) of the conductive sheet (370) may be a point where the first side (371) and the third side (373) of the conductive sheet (370) meet (or a point in the corner portion of the conductive sheet (370) corresponding to the area between the first side (371) and the third side (373). For example, a point (P31) of the conductive sheet (370) connected to the ground of the wearable device (200) may be located on the first side (371) among the plurality of sides of the conductive sheet (370). For example, but not limited to, the point (P31) of the conductive sheet (370) may be closer to the center of the first side (371) (and / or the fourth side (374)) than to the point (P32).

[0067] In one embodiment, the NFC circuit can apply a signal according to NFC communication to the coil (310) through the first terminal (310a) of the coil (310). The coil (310) and the conductive sheet (370) connected to the coil (310) can generate a magnetic field according to the signal applied by the NFC circuit. The coil (310), the conductive sheet (370), and the conductive path (315), which are connected between the NFC circuit and the ground of the wearable device (200), can form a single-ended circuit. Since the conductive sheet (370) as well as the coil (310) are used as antenna radiators for NFC, the NFC antenna performance can be improved.

[0068] For example, the second terminal (310b) of the coil (310) may be connected to the NFC circuit. In this case, the coil (310) may be formed as a single-ended circuit or a differential circuit.

[0069] FIG. 4a is a cross-sectional view of a wearable device according to one embodiment. FIG. 4b is a plan view showing a coil of a wearable device according to one embodiment.

[0070] In FIG. 3a, a flexible printed circuit board (380) comprising a coil (310) or a coil (310) disposed substantially in the same plane as the conductive sheet (370) is illustrated, but is not limited thereto. For example, referring to FIG. 4a, the flexible printed circuit board (380) comprising the coil (310) or a coil (310) may be disposed below the conductive sheet (370). For example, the flexible printed circuit board (380) may be attached at least partially to the back surface of the conductive sheet (370). For example, the flexible printed circuit board (380) may be positioned below the conductive sheet (370) so as to be spaced apart from the conductive sheet (370). In this case, a dielectric material (e.g., air or plastic) may be disposed between the flexible printed circuit board (380) and the conductive sheet (370).

[0071] Referring to FIGS. 4a and 4b, according to one embodiment, the coil (310) may include a portion that overlaps the conductive sheet (370). For example, the coil (310) may be placed under the conductive sheet (370) so as to partially overlap the conductive sheet (370). Even if the coil (310) is placed under the conductive sheet (370), as shown in FIG. 3b, the entire coil (310) may not overlap the conductive sheet (370).

[0072] In one embodiment, when the coil (310) partially overlaps with the conductive sheet (370), the second end (310b) of the coil (310) may be located inside the conductive sheet (370). For example, the second end (310b) of the coil (310) may be electrically connected to a point (P41) corresponding to inside the conductive sheet (370).

[0073] FIGS. 5A, FIGS. 5B, and FIGS. 5C show examples of the locations of points on a conductive sheet connected to the ground and coil of a wearable device according to one embodiment.

[0074] Referring to FIG. 5a, in one embodiment, a point of the conductive sheet (370) connected to the coil (310) and a point of the conductive sheet (370) connected to the ground of the wearable device (200) may be positioned to have a phase difference of 180 degrees.

[0075] For example, a point (P52a) of the conductive sheet (370) connected to the second terminal (310b) of the coil (310) may be located on the first side (371). For example, but not limited to, the point (P52a) of the conductive sheet (370) may be the point where the first side (371) and the third side (373) of the conductive sheet (370) meet (or the point on the corner portion of the conductive sheet (370) corresponding to the area between the first side (371) and the third side (373).

[0076] For example, a point (P51a) of the conductive sheet (370) connected to the ground of the wearable device (200) may be located on the second side (372). For example, a point (P51a) on the second side (372) of the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through the conductive path (315) of the flexible printed circuit board (362) and the display driving circuit. A first terminal (310a) of the coil (310) may be electrically connected to the NFC circuit.

[0077] Referring to FIG. 5b, in one embodiment, a point of the conductive sheet (370) connected to the coil (310) and a point of the conductive sheet (370) connected to the ground of the wearable device (200) may be positioned to have a phase difference of 90 degrees.

[0078] For example, a point (P52b) of the conductive sheet (370) connected to the second terminal (310b) of the coil (310) may be located on the first side (371). For example, but not limited to, the point (P52b) of the conductive sheet (370) may be the point where the first side (371) and the third side (373) of the conductive sheet (370) meet (or the point on the corner portion of the conductive sheet (370) corresponding to the area between the first side (371) and the third side (373).

[0079] For example, a point (P51b) of the conductive sheet (370) connected to the ground of the wearable device (200) may be located on the third side (373). For example, a point (P51b) on the third side (373) of the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through the conductive path (315) of the flexible printed circuit board (362) and the display driving circuit. A first terminal (310a) of the coil (310) may be electrically connected to the NFC circuit.

[0080] Referring to FIG. 5c, in one embodiment, a point of the conductive sheet (370) connected to the coil (310) and a point of the conductive sheet (370) connected to the ground of the wearable device (200) may be positioned to have a phase difference of 270 degrees.

[0081] For example, a point (P52c) of the conductive sheet (370) connected to the second terminal (310b) of the coil (310) may be located on the first side (371). For example, but not limited to, the point (P52c) of the conductive sheet (370) may be the point where the first side (371) and the third side (373) of the conductive sheet (370) meet (or the point on the corner portion of the conductive sheet (370) corresponding to the area between the first side (371) and the third side (373).

[0082] For example, a point (P51c) of the conductive sheet (370) connected to the ground of the wearable device (200) may be located on the fourth side (374). For example, a point (P51c) on the fourth side (374) of the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through the conductive path (315) of the flexible printed circuit board (362) and the display driving circuit. The first terminal (310a) of the coil (310) may be electrically connected to the NFC circuit.

[0083] FIGS. 6A, 6B, 6C, and 6D show the magnetic field distribution of a wearable device according to one embodiment, based on the positions of points on a conductive sheet connected to the ground and coil of the wearable device.

[0084] FIG. 6a may show the magnetic field distribution of a wearable device (200) in which the coil (310) and the conductive sheet (370) are configured as in FIG. 3b. FIG. 6b may show the magnetic field distribution of a wearable device (200) in which the coil (310) and the conductive sheet (370) are configured as in FIG. 5a. FIG. 6c may show the magnetic field distribution of a wearable device (200) in which the coil (310) and the conductive sheet (370) are configured as in FIG. 5b. FIG. 6d may show the magnetic field distribution of a wearable device (200) in which the coil (310) and the conductive sheet (370) are configured as in FIG. 5c.

[0085] Referring to FIGS. 6a and 6b, the magnetic field of the wearable device (200) can be strongly formed in the top direction of the wearable device (200) (e.g., the direction in which the window (250) in FIG. 2a) faces), as indicated by the arrow. NFC coverage can be optimized according to the actual usage direction of the wearable device (200) (e.g., the direction in which the display (360) is positioned above the finger).

[0086] Referring to FIG. 6c, the magnetic field of the wearable device (200) can be tilted to the left as indicated by the arrow. Referring to FIG. 6d, the magnetic field of the wearable device (200) can be tilted to the right as indicated by the arrow.

[0087] FIG. 7a shows a wearable device according to one embodiment.

[0088] Referring to FIG. 7a, according to one embodiment, the housing (220) of a wearable device (200) may include an opening (730) that supports a window (250) and another part (736) that extends outward from the opening (730). For example, the other part (736) of the housing (220) may extend from both ends of the opening (730).

[0089] In one embodiment, a window (250) may be attached to an opening (730) to close the opening (730). A conductive sheet (370), a coil (310), and a ferrite sheet (382) may be located within the opening (730). Although not illustrated, a flexible printed circuit board (380) including the coil (310) and a display (360) may also be located within the opening (730).

[0090] In one embodiment, the opening portion (730) may include a first portion (731), a second portion (732), a third portion (733), and a fourth portion (734). The first portion (731) may extend along the circumferential direction of the ring-shaped housing (220) (or wearable device (200)). The second portion (732) may connect one side of the first portion (731) and one side of the third portion (733). The second portion (732) may extend in a direction different from the circumferential direction. For example, the second portion (732) may extend along the annular axis of the ring-shaped housing (220) (or wearable device (200)) perpendicular to the circumferential direction. The third part (733) may be opposite to the first part (731) and may extend substantially parallel to the first part (731) (e.g., in the circumferential direction). The fourth part (734) may connect the other side of the first part (731) and the other side of the third part (733). The fourth part (734) may be opposite to the second part (732) and may extend substantially parallel to the second part (732) (e.g., in the annular axis direction).

[0091] In one embodiment, each of the first portion (731), second portion (732), third portion (733), and fourth portion (734) of the opening portion (730) can support a corresponding lateral side portion among the plurality of lateral side portions of the window (250). For example, each of the first portion (731), second portion (732), third portion (733), and fourth portion (734) of the opening portion (730) can be attached to the corresponding lateral side portion among the plurality of lateral side portions of the window (250).

[0092] In one embodiment, the first part (731), the second part (732), the third part (733), and the fourth part (734) of the opening part (730) may have substantially the same height. Alternatively, the opening part (730) may include a part formed with a different height from the other parts. For example, the first part (731) and the third part (733) of the opening part (730) may have different heights from the second part (732) and the fourth part (734). For example, the heights of the first part (731) and the third part (733) of the opening part (730) may be lower than the heights of the second part (732) and the fourth part (734). The heights of the first part (731), second part (732), third part (733), and fourth part (734) described above may be heights along the radial direction of the ring-shaped housing (220).

[0093] For example, the opening (730) of the housing (220) may be formed of a metallic material, such as titanium and stainless steel. Alternatively, the opening (730) of the housing (220) may be formed of a plastic material.

[0094] For example, other parts (736) of the housing (220) may be formed of a metallic material, such as titanium and stainless steel. Alternatively, other parts (736) of the housing (220) may be formed of a plastic material.

[0095] For example, the opening (730) and other parts (736) of the housing (220) may be formed integrally. For example, the opening (730) and other parts (736) of the housing (220) may be formed of a metal material or a plastic material. Alternatively, the opening (730) of the housing (220) may be formed of a metal material and the other parts (736) of the housing (220) may be formed of a plastic material. Alternatively, the opening (730) of the housing (220) may be formed of a plastic material and the other parts (736) of the housing (220) may be formed of a metal material.

[0096] For example, the entire housing (220) may be formed integrally, without limitation. For example, the entire housing (220) may be formed from a metal material or a plastic material. However, while metal and plastic have been exemplified as materials forming the housing (220), they are not limited thereto (e.g., ceramic).

[0097] FIGS. 7B, FIGS. 7C, FIGS. 7D, FIGS. 7E, and FIGS. 7F show the magnetic field distribution of a wearable device according to the material of the housing according to one embodiment.

[0098] Referring together with FIG. 7a, FIG. 7b shows the magnetic field distribution of a wearable device (200), in which the opening portion (730) and other portions (736) of the housing (220) are formed of a metallic material. Referring to FIG. 7b, a strong magnetic field can be formed in the upward direction of the wearable device (200).

[0099] Referring together with FIG. 7a, FIG. 7c shows a magnetic field distribution of a wearable device (200) in which the housing (220) includes only an opening (730) formed of a metallic material and does not include the rest. Referring to FIG. 7c, a magnetic field distribution substantially identical to that of FIG. 7b can be formed.

[0100] Referring together with FIG. 7a, FIG. 7d shows a magnetic field distribution of a wearable device (200), comprising an opening (730) formed such that the heights of the first part (731) and the third part (733) are lower than those of the second part (732) and the fourth part (734), and the opening (730) and other parts (736) are formed of a metallic material. Referring to FIG. 7d, the magnetic field distribution area may be wider than that of FIG. 7b and FIG. 7c.

[0101] Referring together with FIG. 7a, FIG. 7e shows a magnetic field distribution of a wearable device (200), in which an opening portion (730) of the housing (220) is formed of a plastic material and another portion (736) is formed of a metal material. Referring to FIG. 7e, the magnetic field distribution area of ​​the wearable device (200) can be wider than that of FIG. 7b, FIG. 7c, and FIG. 7d.

[0102] Referring together with FIG. 7a, FIG. 7f shows the magnetic field distribution of a wearable device (200), in which the opening portion (730) and other portions (736) of the housing (220) are formed of a plastic material. Referring to FIG. 7f, the magnetic field distribution area of ​​the wearable device (200) can be wider than that of FIG. 7b, FIG. 7c, FIG. 7d, and FIG. 7e.

[0103] FIGS. 8a, FIGS. 8b, and FIGS. 8c show various examples of coils of a wearable device according to one embodiment.

[0104] In FIG. 3b, a coil (310) extending counterclockwise to a conductive sheet (370) is illustrated, but is not limited thereto. For example, referring to FIG. 8a, the coil (310) may extend clockwise from a first stage (310a) to a conductive sheet (370) (or a second stage (310b)).

[0105] Additionally, in FIG. 3b, the conductive sheet (370) is illustrated as being electrically connected to the NFC circuit through the coil (310) and electrically connected to the ground of the wearable device (200) through the conductive path (315) of the flexible printed circuit board (362), but is not limited thereto. For example, referring to FIG. 8b and FIG. 8c, according to one embodiment, the first end (310a) of the coil (310) may be electrically connected to the ground of the wearable device (200). The second end (310b) of the coil (310) may be electrically connected to the conductive sheet (370). In other words, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through the coil (310).

[0106] In one embodiment, the conductive sheet (370) can be electrically connected to the NFC circuit through a conductive path (815) formed in the flexible printed circuit board (362). In other words, the coil (310) can be electrically connected to the NFC circuit through the conductive sheet (370) and the conductive path (815).

[0107] In one embodiment, the coil (310), in which the first stage (310a) is electrically connected to the ground of the wearable device (200), may be extended counterclockwise to a conductive sheet (370), as shown in FIG. 8b. Alternatively, the coil (310), in which the first stage (310a) is electrically connected to the ground of the wearable device (200), may be extended clockwise to a conductive sheet (370), as shown in FIG. 8c.

[0108] FIGS. 9a, 9b, and 9c show a conductive sheet and a coil of a wearable device according to one embodiment.

[0109] Referring to FIGS. 9a, 9b, and 9c, a wearable device (200) according to one embodiment may include a conductive path (915). For example, the conductive path (915) may electrically connect a point (P93) of a conductive sheet (370) to a flexible printed circuit board (380). For example, but not limited to, the point (P93) of the conductive sheet (370) to which the conductive path (915) is connected may be located inside the conductive sheet (370) (or the plurality of sides). For example, but not limited to, the point (P93) may be located in the center of the conductive sheet (370). The conductive path (915) may include a conductive connecting member, such as a conductive contact, a conductive gasket, or a conductive foam.

[0110] For example, as shown in FIG. 9a and FIG. 9b, the conductive sheet (370) can be electrically connected to the ground of the wearable device (200) through a conductive path (915). For example, a point (P93) of the conductive sheet (370) can be electrically connected to the ground of the wearable device (200) through the conductive path (915) and a conductive path formed in the flexible printed circuit board (380) (e.g., the ground layer of the printed circuit board (380)).

[0111] In another example, as shown in FIG. 9c, the conductive sheet (370) can be electrically connected to the NFC circuit of the wearable device (200) through the conductive path (915). For example, a point (P93) of the conductive sheet (370) can be electrically connected to the NFC circuit through the conductive path (915) and wiring formed on the flexible printed circuit board (380).

[0112] Referring to FIG. 9a, according to one embodiment, a conductive sheet (370) can be electrically connected to the ground of a wearable device (200) through a conductive path (315), and additionally, can be electrically connected to the ground of a wearable device (200) through a conductive path (915).

[0113] In some of the previous drawings, the conductive sheet (370) was illustrated as being electrically connected to the ground of the wearable device (200) through a conductive path (315). However, referring to FIG. 9b, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) through a conductive path (915) rather than a conductive path (315). In other words, the wearable device (200) may include a conductive path (915) and may not include a conductive path (315) in order to electrically connect the conductive sheet (370) to the ground.

[0114] In some of the previous drawings, the conductive sheet (370) was illustrated as being electrically connected to the NFC circuit through a conductive path (815). However, referring to FIG. 9c, the conductive sheet (370) may be electrically connected to the NFC circuit through a conductive path (915) rather than a conductive path (815). In other words, the wearable device (200) may include a conductive path (915) and may not include a conductive path (815) in order to electrically connect the conductive sheet (370) to the NFC circuit.

[0115] FIGS. 10a, FIGS. 10b, and FIGS. 10c show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0116] Referring to FIG. 10a, FIG. 10b, and FIG. 10c, according to one embodiment, the coil (310) may include first lines (1071) adjacent to the third side (373) of the conductive sheet (370) and second lines (1072) adjacent to the fourth side (374) of the conductive sheet (370) as it is wound along the periphery of the conductive sheet (370).

[0117] In one embodiment, the first lines (1071) and second lines (1072) of the coil (310) may be symmetrically superimposed on the conductive sheet (370). For example, at least one of the first lines (1071) and at least one of the second lines (1072) may be superimposed on the conductive sheet (370), and the number of line(s) of the first lines (1071) superimposed on the conductive sheet (370) may be equal to the number of line(s) of the second lines (1072) superimposed on the conductive sheet (370).

[0118] For example, referring to FIG. 10a, all of the first lines (1071) consisting of three lines and all of the second lines (1072) consisting of three lines can be superimposed on the conductive sheet (370). For another example, referring to FIG. 10b, two of the first lines (1071) and two of the second lines (1072) can be superimposed on the conductive sheet (370). For another example, referring to FIG. 10c, one of the innermost lines of the first lines (1071) and one of the innermost lines of the second lines (1072) can be superimposed on the conductive sheet (370).

[0119] FIGS. 11a, FIGS. 11b, FIGS. 11c, FIGS. 11d, FIGS. 11e, and FIGS. 11f show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0120] Referring to FIGS. 11a, 11b, 11c, 11d, 11e, and 11f, in one embodiment, the first lines (1071) and second lines (1072) of the coil (310) may be asymmetrically superimposed on the conductive sheet (370). For example, at least one of the first lines (1071) and at least one of the second lines (1072) may be superimposed on the conductive sheet (370), and the number of line(s) of the first lines (1071) superimposed on the conductive sheet (370) may be different from the number of line(s) of the second lines (1072) superimposed on the conductive sheet (370). For example, at least one of the first lines (1071) may overlap the conductive sheet (370), while the second lines (1072) may not overlap the conductive sheet (370). For example, the first lines (1071) may not overlap the conductive sheet (370), while at least one of the second lines (1072) may overlap the conductive sheet (370).

[0121] For example, referring to FIG. 11a, in the case of the first lines (1071), all three lines overlap on the conductive sheet (370), whereas in the case of the second lines (1072), only two lines may overlap on the conductive sheet (370).

[0122] For example, referring to FIG. 11b, in the case of the first lines (1071), all three lines overlap on the conductive sheet (370), whereas in the case of the second lines (1072), only one line may overlap on the conductive sheet (370).

[0123] For example, referring to FIG. 11c, in the case of the first lines (1071), all three lines overlap on the conductive sheet (370), whereas the second lines (1072) may not overlap on the conductive sheet (370).

[0124] For example, referring to FIG. 11d, in the case of the first lines (1071), two lines overlap on the conductive sheet (370), whereas in the case of the second lines (1072), only one line may overlap on the conductive sheet (370).

[0125] For example, referring to FIG. 11e, in the case of the first lines (1071), two lines overlap on the conductive sheet (370), whereas the second lines (1072) may not overlap on the conductive sheet (370).

[0126] For example, referring to FIG. 11f, in the case of the first lines (1071), only one line overlaps the conductive sheet (370), whereas the second lines (1072) may not overlap the conductive sheet (370).

[0127] FIGS. 12a, FIGS. 12b, FIGS. 12c, and FIGS. 12d show various examples of areas where a conductive sheet and a coil of a wearable device overlap according to one embodiment.

[0128] Referring to FIGS. 12a, 12b, 12c, and 12d, according to one embodiment, the coil (310) may include third lines (1073) that extend from the first lines (1071) to the second lines (1072) and are adjacent to the second side (372) of the conductive sheet (370).

[0129] In one embodiment, at least one of the third lines (1073) may be superimposed on the conductive sheet (370). For example, referring to FIG. 12a, all three third lines (1073) may be superimposed on the conductive sheet (370). For example, referring to FIG. 12b, only two of the third lines (1073) may be superimposed on the conductive sheet (370). For example, referring to FIG. 12c, only the innermost line of the third lines (1073) may be superimposed on the conductive sheet (370).

[0130] Optionally, when at least one of the third lines (1073) overlaps the conductive sheet (370), at least one of the first lines (1071) and at least one of the second lines (1072) may overlap the conductive sheet (370) symmetrically or asymmetrically.

[0131] Optionally, when at least one of the third lines (1073) overlaps the conductive sheet (370), at least one of the first lines (1071) (or at least one of the second lines (1072)) may overlap the conductive sheet (370). For example, referring to FIG. 12d, all of the first lines (1071) may overlap the conductive sheet (370), the second lines (1072) may not overlap the conductive sheet (370), and only one of the third lines (1073) may overlap the conductive sheet (370).

[0132] FIGS. 13, 14, and 15 illustrate various examples of an electronic device comprising a conductive sheet and a coil according to one embodiment.

[0133] With reference to the prior drawings, a ring-shaped wearable device comprising a conductive sheet (370) and a coil (310) has been illustrated, but is not limited thereto. For example, embodiments of the present disclosure may be applied to various types of electronic devices.

[0134] For example, referring to FIG. 13, a wearable device (1300) according to one embodiment may be an electronic watch or a smart watch. For example, the electronic device (1300) may include a main body (1320) and a pair of straps (1322) connected to both sides of the main body (1320).

[0135] According to one embodiment, a wearable device (1300) may include a window (1350) (e.g., window (250)) coupled to a main body (1320) to form part of the exterior of the wearable device (1300); a conductive sheet (1370) (e.g., conductive sheet (370)) disposed below the window (1350); a coil (1310) (e.g., coil (310)) extending along the periphery of the conductive sheet (1370); and a ferrite sheet (1382) (e.g., ferrite sheet (382)) disposed below the coil (1310).

[0136] Although not illustrated, a wearable device (1300) according to one embodiment may include a display (e.g., a display (360)) between a window (1350) and a conductive sheet (1370).

[0137] For example, referring to FIG. 14, an electronic device (1400) according to one embodiment may have a foldable form factor. For example, the electronic device (1400) may include a first housing (1421) and a second housing (1422) rotatably coupled to the first housing (1421). For example, the first housing (1421) and the second housing (1422) may be rotatably coupled to each other through a hinge structure inside the electronic device (1400). For example, the first housing (1421) and the second housing (1422) of the electronic device (1400) may be folded or unfolded with respect to a folding axis (f14). In the unfolded state of the electronic device (1400), the vertical length of the electronic device (1400) parallel to the folding axis (f14) may be longer than the horizontal length of the electronic device (1400) perpendicular to the folding axis (f14).

[0138] According to one embodiment, the electronic device (1400) may include: a window (1450) (e.g., window (250)) coupled to a second housing (1422) to form part of the exterior of the electronic device (1400); a conductive sheet (1470) (e.g., conductive sheet (370)) disposed below the window (1450); a coil (1410) (e.g., coil (310)) extending along the periphery of the conductive sheet (1470); and a ferrite sheet (1482) (e.g., ferrite sheet (382)) disposed below the coil (1410).

[0139] Although not illustrated, an electronic device (1400) according to one embodiment may include a display (e.g., a display (360)) between a window (1450) and a conductive sheet (1470).

[0140] For example, referring to FIG. 15, an electronic device (1500) according to one embodiment may have a foldable form factor. For example, the electronic device (1500) may include a first housing (1521) and a second housing (1522) rotatably coupled to the first housing (1521). For example, the first housing (1521) and the second housing (1522) may be rotatably coupled to each other through a hinge structure inside the electronic device (1500). For example, the first housing (1521) and the second housing (1522) of the electronic device (1500) may be folded or unfolded with respect to a folding axis (f15). In the unfolded state of the electronic device (1500), the horizontal length of the electronic device (1400) parallel to the folding axis (f15) may be shorter than the vertical length of the electronic device (1500) perpendicular to the folding axis (f15).

[0141] According to one embodiment, the electronic device (1500) may include a window (1550) (e.g., window (250)) coupled to a second housing (1522) to form part of the exterior of the electronic device (1500); a conductive sheet (1570) (e.g., conductive sheet (370)) disposed below the window (1550); a coil (1510) (e.g., coil (310)) extending along the periphery of the conductive sheet (1570); and a ferrite sheet (1582) (e.g., ferrite sheet (382)) disposed below the coil (1510).

[0142] Although not illustrated, an electronic device (1500) according to one embodiment may include a display (e.g., a display (360)) between a window (1550) and a conductive sheet (1570).

[0143] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this disclosure pertains.

[0144] According to one embodiment, a wearable device (200) may include a display (360), a conductive sheet (370) attached below the display (360), an NFC (near field communication) circuit, and a coil (310) extending around the conductive sheet (370). The conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a first point on a first side (371) among a plurality of sides of the conductive sheet (370). A first end (310a) of the coil (310) may be electrically connected to the NFC circuit. A second end (310b) of the coil (310) may be electrically connected to a second point on the first side (371) of the conductive sheet (370) that is electrically connected to the ground.

[0145] According to one embodiment, the wearable device (200) may further include a DDI (display driving integrated circuit). The first point of the first side (371) of the conductive sheet (370) may be electrically connected to the ground through the DDI.

[0146] In one embodiment, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a third point different from the first point and the second point.

[0147] In one embodiment, the wearable device (200) may include a window (250). The display (360) may be attached to the back surface of the window (250). The wearable device (200) may include a ring-shaped frame (220) that supports the window (250).

[0148] In one embodiment, the ring-shaped frame (220) may include an opening (730) in which the display (360) is located on the inside and which supports the window (250). The opening (730) may include a first part (731) that supports a first lateral side portion of the window (250), and a second part (732) that supports a second lateral side portion of the window (250). The first height of the first part (731) of the opening (730) may be different from the second height of the second part (732) of the opening (730).

[0149] In one embodiment, the first portion (731) of the opening portion (730) may extend along the circumferential direction of the ring-shaped frame (220). The second portion (732) of the opening portion (730) may extend along a direction different from the circumferential direction. The first height of the first portion (731) may be lower than the second height of the second portion (732).

[0150] In one embodiment, the opening portion (730) of the ring-shaped frame (220) may be formed of a metal material.

[0151] In one embodiment, the entire ring-shaped frame (220) may be formed of the metal material.

[0152] In one embodiment, the ring-shaped frame (220) may include an opening (730) that supports the window (250) and in which the display (360) is located inside. The opening (730) may be formed of a plastic material.

[0153] In one embodiment, the remaining portion of the ring-shaped frame (220) may be formed integrally with the opening portion (730).

[0154] In one embodiment, the ring-shaped frame (220) may include another part (736) extending from the opening part (730). The other part (736) may be formed of a metal material.

[0155] In one embodiment, the wearable device (200) may include a flexible printed circuit board (380) including the coil (310), and a ferrite sheet (382) attached to the flexible printed circuit board (380) so as to overlap the coil (310).

[0156] According to one embodiment, a wearable device (200) may include a display (360), a conductive sheet (370) attached below the display (360) and comprising a first side (371) and a second side (372) opposite to the first side (371), an NFC (near field communication) circuit, and a coil (310) extending around the conductive sheet (370). The conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a first point on the first side (371). A first end (310a) of the coil (310) may be electrically connected to the NFC circuit. A second end (310b) of the coil (310) may be electrically connected to a second point on the second side (372) of the conductive sheet (370) which is electrically connected to the ground.

[0157] In one embodiment, the wearable device (200) may further include a DDI (display driving integrated circuit). The first point of the first side (371) of the conductive sheet (370) may be electrically connected to the ground through the DDI.

[0158] In one embodiment, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a third point different from the first point and the second point.

[0159] The wearable device (200) may include a window (250). The display (360) may be attached to the back of the window (250). The wearable device (200) may include a ring-shaped frame (220) that supports the window (250).

[0160] In one embodiment, the ring-shaped frame (220) may include an opening (730) that supports the window (250) and in which the display (360) is located. The opening (730) of the ring-shaped frame (220) may be formed of a metal material.

[0161] In one embodiment, the ring-shaped frame (220) may include an opening (730) that supports the window (250) and in which the display (360) is located inside. The opening (730) of the ring-shaped frame (220) may be formed of a plastic material.

[0162] According to one embodiment, a wearable device (200) may include a display (360), a conductive sheet (370) attached below the display (360), an NFC (near field communication) circuit, and a coil (310) extending around the conductive sheet (370). The conductive sheet (370) may be electrically connected to the NFC circuit at a first point on a first side (371) among a plurality of sides of the conductive sheet (370). A first end (310a) of the coil (310) may be electrically connected to a second point on the first side (371) of the conductive sheet (370) that is electrically connected to the NFC circuit. A second end (310b) of the coil (310) may be electrically connected to the ground of the wearable device (200).

[0163] In one embodiment, the conductive sheet (370) may be electrically connected to the ground of the wearable device (200) at a third point different from the first point and the second point.

[0164] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs.

[0165] The electronic device according to the various embodiments disclosed in this document may be a device of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the devices described above.

[0166] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, each of phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish a component from another component and do not limit the components in any other aspect (e.g., importance or order). Where any component (e.g., the first) is referred to as "coupled" or "connected" to another component (e.g., the second), with or without the terms "functionally" or "communicationally," it means that said component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0167] The term “module” as used in the various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0168] Various embodiments of the present document may be implemented as software (e.g., program (140)) comprising one or more instructions stored in a storage medium (e.g., internal memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0169] According to one embodiment, the method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0170] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In a wearable device (200), Display (360); A conductive sheet (370) attached below the above display (360); NFC (near field communication) circuit; and It includes a coil (310) extending from the periphery of the conductive sheet (370), and The conductive sheet (370) is electrically connected to the ground of the wearable device (200) at a first point on a first side (371) among a plurality of sides of the conductive sheet (370), and The first terminal (310a) of the above coil (310) is electrically connected to the NFC circuit, and The second end (310b) of the coil (310) is electrically connected to a second point on the first side (371) of the conductive sheet (370) which is electrically connected to the ground. Wearable device (200).

2. In Claim 1, It further includes a DDI (display driving integrated circuit), The first point of the first side (371) of the conductive sheet (370) is electrically connected to the ground through the DDI, Wearable device (200).

3. In claim 1 or claim 2, The conductive sheet (370) is electrically connected to the ground of the wearable device (200) at a third point different from the first point and the second point. Wearable device (200).

4. In any one of claims 1 to 3, A window (250), and the display (360) is attached to the back of the window (250); and A ring-shaped frame (220) supporting the above window (250), Wearable device (200).

5. In Claim 4, The above ring-shaped frame (220) supports the window (250) and includes an opening (730) in which the display (360) is located on the inside. The above opening (730) is: A first part (731) supporting a first lateral side portion of the above window (250); and It includes a second part (732) that supports the second side portion of the above window (250), and The first height of the first part (731) of the opening portion (730) is different from the second height of the second part (732) of the opening portion (730). Wearable device (200).

6. In Claim 5, The first portion (731) of the opening portion (730) extends along the circumferential direction of the ring-shaped frame (220), and The second portion (732) of the opening portion (730) extends along a direction different from the circumferential direction, and The first height of the first part (731) is lower than the second height of the second part (732). Wearable device (200).

7. In any one of claims 4 to 6, The opening portion (730) of the above ring-shaped frame (220) is formed of a metal material, Wearable device (200).

8. In Claim 7, The entire ring-shaped frame (220) is formed of the metal material, Wearable device (200).

9. In Claim 4, The above ring-shaped frame (220) supports the window (250) and includes an opening (730) in which the display (360) is located on the inside. The above opening (730) is formed of a plastic material, Wearable device (200).

10. In Claim 9, The remaining portion of the above ring-shaped frame (220) is formed integrally with the above opening portion (730). Wearable device (200).

11. In Claim 9, The above ring-shaped frame (220) includes another part (736) extending from the opening part (730), and The other part (736) above is formed of a metallic material, Wearable device (200).

12. In any one of claims 1 to 11, A flexible printed circuit board (380) including the above coil (310); and A ferrite sheet (382) attached to the flexible printed circuit board (380) so as to overlap the coil (310), Wearable device (200).

13. In a wearable device (200), Display (360); A conductive sheet (370) attached below the above-mentioned display (360) and comprising a first side (371) and a second side (372) opposite to the first side (371); NFC (near field communication) circuit; and It includes a coil (310) extending from the periphery of the conductive sheet (370), and The conductive sheet (370) is electrically connected to the ground of the wearable device (200) at a first point of the first side (371), and The first terminal (310a) of the above coil (310) is electrically connected to the NFC circuit, and The second end (310b) of the coil (310) is electrically connected to a second point on the second side (372) of the conductive sheet (370) which is electrically connected to the ground. Wearable device (200).

14. In Claim 13, It further includes a DDI (display driving integrated circuit), The first point of the first side (371) of the conductive sheet (370) is electrically connected to the ground through the DDI, Wearable device (200).

15. In claim 13 or claim 14, The conductive sheet (370) is electrically connected to the ground of the wearable device (200) at a third point different from the first point and the second point. Wearable device (200).

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