Wearable electronic device and driving method thereof

Abstract

Embodiments of the present disclosure relate to a wearable electronic device and a driving method thereof, the wearable electronic device comprising: a sensor module (211) including a photonic integrated circuit (310) for sensing biometric information; a processor; and a memory for storing instructions, wherein the photonic integrated circuit (310) may include a plurality of laser sources (410), a photodetector (350) disposed at the center of the arrangement of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) for transmitting light emitted from the plurality of laser sources (410) to the plurality of grating coupler arrays (340), respectively.

Description

Wearable electronic device and method of operating the same

[0001] The embodiments of the present disclosure relate to a wearable electronic device and a method of operating the same.

[0002] The electronic device may include a wearable electronic device that can be worn on a part of the user's body to improve portability or user accessibility. The wearable electronic device may include a watch-type wearable electronic device worn on the user's wrist.

[0003] A wearable electronic device can detect the user's biometric information in addition to the inherent function of a watch by being worn on the user's wrist.

[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] Wearable electronic devices may include biosensors configured to detect biological information. Biosensors may include a light source that emits light and a photodetector. Biosensors have become essential components in wearable electronic devices, and research and development are ongoing to improve the sensing accuracy of biosensors and to reduce the size and volume of biosensors.

[0006] The embodiments of the present disclosure can provide a wearable electronic device and a method for operating the same that can increase the accuracy of sensing of a biosensor and reduce its size and volume.

[0007] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A wearable electronic device (200) according to one embodiment of the present disclosure includes a sensor module (211) comprising a photonic integrated circuit (310) for detecting bio-information, a processor, and a memory for storing instructions, wherein the photonic integrated circuit (310) may include a plurality of laser sources (410), a photodetector (350) positioned at the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340).

[0009] In a driving method for a wearable electronic device (200) according to one embodiment of the present disclosure, the wearable electronic device (200) includes a photonic integrated circuit (310) for detecting bio-information, wherein the photonic integrated circuit (310) includes a plurality of laser sources (410), a photodetector (350) disposed in the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340), and the driving method for the wearable electronic device (200) controls a first laser source (411) disposed in a first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to transmit light of a first wavelength range (f11). The operation may include: a spectrally outputting operation; a second laser source (412) positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a second wavelength range (f21); a third laser source (413) positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a third wavelength range (f31); and a fourth laser source (414) positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a fourth wavelength range (f41).

[0010] According to the embodiments of the present disclosure, the accuracy of sensing by a biosensor can be increased, and its size and volume can be reduced.

[0011] In addition, various effects that can be identified directly or indirectly through this document may be provided.

[0012] Other aspects, features, and advantages according to specific embodiments of the present disclosure will become more apparent from the accompanying drawings and description.

[0013] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment.

[0014] FIG. 2a is a front perspective view of a wearable electronic device according to various embodiments of the present disclosure.

[0015] FIG. 2b is a rear perspective view of the wearable electronic device of FIG. 2a according to various embodiments of the present disclosure.

[0016] FIG. 3 is a drawing illustrating a second side (or rear side) of a wearable electronic device according to one embodiment.

[0017] FIG. 4 is a diagram showing the configuration of a photonic integrated circuit according to one embodiment.

[0018] FIG. 5 is a conceptual diagram illustrating the sensing operation of a photonic integrated circuit according to one embodiment.

[0019] FIG. 6 is a graph illustrating the wavelength range of light of a plurality of laser sources according to one embodiment.

[0020] FIG. 7 is a diagram illustrating the arrangement of a plurality of grid coupler arrays according to one embodiment.

[0021] FIG. 8 is a diagram of a photonic integrated circuit according to one embodiment.

[0022] FIG. 9 is a flowchart illustrating a method of driving a wearable electronic device according to one embodiment.

[0023] FIG. 10 is a flowchart illustrating a method in which laser sources of a photonic integrated circuit according to one embodiment sequentially output light.

[0024] FIG. 11 is a flowchart illustrating a method in which at least some of the laser sources of a photonic integrated circuit according to one embodiment simultaneously output light.

[0025] Each of the embodiments described with reference to the drawings of the present disclosure may be configured independently as a single embodiment. For example, the embodiment of FIG. 1 and the embodiment of FIG. 2a may each be configured independently of each other. Each of the embodiments described with reference to the drawings of the present disclosure may operate independently as a single embodiment. For example, the embodiment of FIG. 1 and the embodiment of FIG. 2a may each operate independently of each other.

[0026] At least two of the embodiments described with reference to the drawings of the present disclosure may be combined. For example, at least a part of the embodiment of FIG. 1 and at least a part of the embodiment of FIG. 2a may be combined with each other. At least two of the embodiments described with reference to the drawings of the present disclosure may be combined and operated. For example, at least a part of the embodiment of FIG. 1 and at least a part of the embodiment of FIG. 2a may be combined and operated with each other.

[0027] When at least two of the embodiments described with reference to the drawings of the present disclosure are combined, at least some of the configurations and / or at least some of the operations included in each embodiment may be omitted. For example, when the embodiment of FIG. 1 and the embodiment of FIG. 2a are combined, at least some of the configurations and / or at least some of the operations included in the embodiment of FIG. 1 may be omitted, and at least some of the configurations and / or at least some of the operations included in the embodiment of FIG. 2a may be omitted.

[0028] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or may communicate 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)).

[0029] The processor (120) can control at least one other component (e.g., hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., program (140)), for example, 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., sensor module (176) or 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., central processing unit or application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., graphics processing unit, neural processing unit (NPU), image signal processor, sensor hub processor, or 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.

[0030] 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.

[0031] 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).

[0032] 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).

[0033] 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).

[0034] 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.

[0035] 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.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] 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).

[0040] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user 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.

[0041] 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.

[0042] 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).

[0043] 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.

[0044] 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, WiFi (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).

[0045] 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) may support a Peak data rate (e.g., 20 Gbps or more) for eMBB realization, loss coverage (e.g., 164 dB or less) for mMTC realization, 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 URLLC realization.

[0046] An antenna module (197) can transmit a signal or power to or from an external source (e.g., an external electronic device). 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). A 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).

[0047] 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.

[0048] 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.

[0049] 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.

[0050] The electronic device according to the various embodiments disclosed in this disclosure may be 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 electronic device, or a consumer electronics device. The electronic device according to the embodiments of this disclosure is not limited to the devices described above.

[0051] The various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features described in the present disclosure 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 the present disclosure, 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” each 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 said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0052] The term “module” as used in various embodiments of the present disclosure 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, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0053] Various embodiments of the present disclosure 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.

[0054] 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 in a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0055] 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 of 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.

[0056] FIG. 2a is a front perspective view of a wearable electronic device according to various embodiments of the present disclosure. FIG. 2b is a rear perspective view of the wearable electronic device of FIG. 2a according to various embodiments of the present disclosure.

[0057] The wearable electronic device (200) of FIGS. 2a and 2b may be at least partially similar to the electronic device (101) of FIG. 1, or may include other embodiments of the electronic device.

[0058] Referring to FIGS. 2a and 2b, a wearable electronic device (200) may include a housing (210) (e.g., a housing structure) comprising a first surface (210A) (or front), a second surface (210B) (or rear), and a side (210C) surrounding the space between the first surface (210A) and the second surface (210B), and a fastening member (250, 260) (e.g., a strap, a connecting member, or a coupling member) connected to at least a part of the housing (210) and configured to detachably fasten the wearable electronic device (200) to a part of a user's body (e.g., a wrist, or an ankle). In some embodiments, the housing (210) may refer to a structure forming part of the first surface (210A), the second surface (210B), and the side (210C) of FIG. 2a. In one embodiment, the first surface (210A) may be formed by a front plate (202) (e.g., front cover) (e.g., a glass plate containing various coating layers, or a polymer plate) in which at least a portion is substantially transparent. The second surface (210B) may be formed by a rear plate (207) (e.g., rear cover) in which it is substantially opaque and a sensor cover (208) combined with the rear plate (207). The rear plate (207) may be formed by, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side surface (210C) may be formed by a side member (e.g., a side bezel structure) (220) comprising metal and / or polymer, which is combined with the front plate (201) and the rear plate (207). In some embodiments, the rear plate (207) and the side member (220) may be integrally formed and may comprise the same material (e.g., a metallic material such as aluminum). The fastening members (250, 260) may be formed in various materials and shapes.A woven fabric, leather, rubber, urethane, metal, ceramic, or a combination of at least two of the above materials can be formed such that an integral and a plurality of unit links are movable with respect to each other.

[0059] According to various embodiments, the wearable electronic device (200) may include at least one of a display (201), an audio module (205), a sensor module (211), and a key input device (203). In some embodiments, the wearable electronic device (200) may omit at least one of the components (e.g., a key input device (203) or a sensor module (211)) or additionally include other components.

[0060] According to various embodiments, the display (201) may be visible through a significant portion of the front plate (202). The shape of the display (201) may correspond to the shape of the front plate (202) and may be various shapes such as circular, elliptical, or polygonal. The display (201) may be combined with or placed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of the touch, and / or a fingerprint sensor.

[0061] According to various embodiments, the audio module (205) may include a microphone hole (205) and a speaker hole (not shown). A microphone for acquiring external sound may be placed inside the microphone hole (205), and in some embodiments, a plurality of microphones may be placed to detect the direction of sound. The speaker hole may be used as an external speaker and a receiver for calls. In some embodiments, the speaker hole and the microphone hole (205) may be implemented as a single hole, or a speaker may be included without a speaker hole (e.g., a piezo speaker).

[0062] According to various embodiments, the sensor module (211) may generate an electrical signal or data value corresponding to an internal operating state of the electronic device (200) or an external environmental state. The sensor module (211) may include, for example, a biosensor module (211) (e.g., HRM sensor) disposed on a second surface (210B) of the housing (210). The wearable electronic device (200) may further include at least one of the sensor modules not illustrated, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0063] According to various embodiments, the key input device (203) may include a wheel key (not shown) disposed on a first surface (210A) of the housing (210) and rotatable in at least one direction, and / or a side key button (203) disposed on a side (210C) of the housing (210). The wheel key may have a shape corresponding to the shape of the front plate (202). In some embodiments, the wearable electronic device (200) may not include some or all of the aforementioned key input devices (203), and the key input device (203) not included may be implemented in other forms, such as soft keys, on the display (201). The connector hole (not shown) may include a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device and another connector hole (not shown) for transmitting and receiving audio signals with an external electronic device. The wearable electronic device (200) may further include, for example, a connector cover (not shown) that covers at least a portion of the connector hole and blocks the entry of external foreign matter into the connector hole.

[0064] According to various embodiments, the fastening member (250, 260) may be detachably fastened to at least a portion of the housing (210) using a locking member (251, 261). The fastening member (250, 260) may include one or more of a fixing member (252), a fixing member fastening hole (253), a band guide member (254), and a band fixing ring (255). The fixing member (252) may be configured to secure the housing (210) and the fastening member (250, 260) to a part of the user's body (e.g., wrist, ankle, etc.). The fixing member fastening hole (253) may secure the housing (210) and the fastening member (250, 260) to a part of the user's body in correspondence with the fixing member (252). The band guide member (254) is configured to limit the range of movement of the fixing member (252) when the fixing member (252) is connected to the fixing member fastening hole (253), thereby allowing the fastening member (250, 260) to be fastened in close contact with a part of the user's body. The band fixing member (255) can limit the range of movement of the fastening member (250, 260) when the fixing member (252) and the fixing member fastening hole (253) are connected.

[0065] According to various embodiments, the wearable electronic device (200) may include a conductive cover (230) (e.g., a decorative member or a deco cover) that is combined with a side member (220) at the front (210A) and covers the edges of the display (201) so that they are not visible from the outside. In one embodiment, the wearable electronic device (200) may include an auxiliary cover (235) that is positioned on top of the conductive cover (230) and can help form an aesthetic appearance. In one embodiment, the conductive cover (230) and the auxiliary cover (235) may be used as decorative members (e.g., deco) of the wearable electronic device (200).

[0066] According to various embodiments, the wearable electronic device (200) may include at least one antenna configured to transmit and / or receive a wireless signal in a specific frequency band through a conductive cover (230) electrically connected to a wireless communication circuit (e.g., a wireless communication module (192) of FIG. 1) disposed in the internal space of the housing (210).

[0067] FIG. 3 is a drawing showing a second side (or rear side) of a wearable electronic device (200) according to one embodiment.

[0068] Referring to FIG. 3, at least a portion of a sensor module (211) may be visible through a second surface (e.g., 210B in FIG. 2b) (or rear) of a housing (210) of a wearable electronic device (200) according to one embodiment. According to one embodiment, the second surface (210B) (or rear) may be formed by a sensor cover (208) (e.g., sensor cover (208) in FIG. 2b) combined with a rear plate (207) (e.g., rear plate (207) in FIG. 2b).

[0069] According to one embodiment, at least a portion of the sensor module (211) may be covered by a sensor cover (208). The sensor cover (208) may be made of a transparent material, and the sensor module (211) may be visible from the outside through the sensor cover (208).

[0070] According to one embodiment, the sensor module (211) may include a photonic integrated circuit (310). The photonic integrated circuit (310) may be placed on a specific circuit board included in the wearable electronic device (200) and may be sealed in a small package.

[0071] A wearable electronic device (200) according to one embodiment can improve the accuracy, sensitivity, and reliability of detecting physiological signals such as heart rate and oxygen saturation by using a photonic integrated circuit (310). According to one embodiment, the photonic integrated circuit (310) can capture photons at various angles and improve signal sensitivity and spatial resolution by arranging grating coupler arrays (340) around a photodetector (350) in a specified form. According to one embodiment, the photonic integrated circuit (310) can be configured to fine-tune the photodetector (350) for spectral response and noise reduction, thereby further improving signal accuracy.

[0072] According to one embodiment, the grating coupler arrays (340) of the photonic integrated circuit (310) may be designed to irradiate the skin with a laser beam at a specific angle that is scattered due to tissue characteristics and physiological changes. According to one embodiment, photons scattered by the skin may be collected by a photodetector (350) located in the center of the photonic integrated circuit (310), and the position of this photodetector (350) may provide an optimal optical path in which the distance between the scattering site and the detection point is minimized, thereby improving the efficiency of photon capture.

[0073] According to one embodiment, the photonic integrated circuit (310) may include a plurality of laser sources (410) (e.g., a plurality of laser sources (410) of FIG. 4), a plurality of grating coupler arrays (340), and a photodetector (350). The photodetector (350) may include at least one photodiode. The light may be a circuit integrating a laser source (e.g., 410 of FIG. 4), grating coupler arrays (340), and a photodetector (350) for accurate detection of physiological signals (e.g., heart rate and oxygen saturation). According to one embodiment, by integrating a laser source (e.g., 410 of FIG. 4), grating coupler arrays (340), and a photodetector (350) into the photonic integrated circuit (310), the size and volume of the sensor module (211) can be reduced, power consumption can be reduced, and the accuracy of sensing can be increased.

[0074] According to one embodiment, the photon integrated circuit (310) can detect various biomarkers of a user by emitting a laser of a specific wavelength (e.g., 2000 nm to 2400 nm, or 1500 nm to 1800 nm, or 1000 nm to 1400 nm) to detect biological information. According to one embodiment, the biomarkers may include proteins, DNA, RNA, metabolites, bacteria, viruses, etc. For example, the biomarkers may include at least some of blood glucose, proteins, lactic acid, alcohol, glucose, hemoglobin, bilirubin, cholesterol, albumin, creatinine, and glycated hemoglobin. The photon integrated circuit (310) can detect various biomarkers depending on various body parts such as skin and blood.

[0075] According to one embodiment, the sensor module (211) may further include a photoplethysmogram (PPG) sensor comprising at least one LED (320) that emits light for measuring blood flow and at least one photodetector (330). The photodetector (330) of the PPG sensor may include at least one photodiode.

[0076] According to one embodiment, the photonic integrated circuit (310) may be positioned in the center of the sensor module (211), and at least one LED (320) and at least one photodetector (330) of the PPG sensor may be positioned to surround the photonic integrated circuit (310), but the present invention is not limited thereto.

[0077] According to one embodiment, the sensor module (211) may not be limited to being included in the watch-type device shown in FIG. 2a and FIG. 2b. For example, the wearable electronic device (200) including the sensor module (211) may be a smart ring, a smart band, an XR device (HMD, Smart Glass), or a hearing device (e.g., TWS, OWS, headset) in addition to the watch-type device.

[0078] FIG. 4 is a diagram of a photonic integrated circuit (310) according to one embodiment.

[0079] Referring to FIG. 4, the photonic integrated circuit (310) may include a plurality of laser sources (410), a photodetector (350) positioned at the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340).

[0080] According to one embodiment, a plurality of laser sources (410) may be formed on a semiconductor basis. The laser sources (410) may be integrated into a photonic integrated circuit (310) and designed to emit light of specific wavelengths (e.g., 2000 nm to 2400 nm, or 1500 nm to 1800 nm, or 1000 nm to 1400 nm) optimized for interaction with biological tissue.

[0081] According to one embodiment, a plurality of laser sources (410) may be symmetrically arranged with respect to a photodetector (350). According to one embodiment, the wavelength of light from the laser sources (410) may be maintained within a narrow range and may be set to a wavelength suitable for specific physiological parameters being monitored, such as blood oxygen or glucose levels.

[0082] According to one embodiment, a plurality of laser sources (410) are positioned in a first direction (DR1) from a photodetector (350) and a first laser source (411) that spectrally outputs light of a first wavelength range (e.g., the first wavelength range (f11) of FIG. 6), a second laser source (412) that is positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a second wavelength range (e.g., the second wavelength range (f21) of FIG. 6), a third laser source (413) that is positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a third wavelength range (e.g., the third wavelength range (f31) of FIG. 6), and a fourth laser source (413) that is positioned in a fourth direction (DR4) opposite to the second direction (DR2) from the photodetector (350) and spectrally outputs light of a fourth wavelength range (e.g., FIG. It may include a fourth laser source (414) that spectrally outputs light in the fourth wavelength range (f41) of 6.

[0083] According to one embodiment, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be different from each other.

[0084] According to one embodiment, the first wavelength range (f11) and the third wavelength range (f31) are the same, the second wavelength range (f21) and the fourth wavelength range (f41) are the same, and the first wavelength range (f11) and the second wavelength range (f21) may be different from each other.

[0085] According to one embodiment, the photodetector (350) may be positioned at the center of an array of a plurality of grating coupler arrays (340). By being positioned at the center, the photodetector (350) can receive photons of light scattered at various angles when light emitted from surrounding laser sources (410) is scattered from the skin. As the photodetector (350) is positioned at the center, the accuracy and sensitivity of the sensing operation can be increased.

[0086] According to one embodiment, a plurality of grating coupler arrays (340) may be arranged around a photodetector (350) positioned in the center of a photonic integrated circuit (310). The grating coupler arrays (340) may couple light emitted from laser sources (410) so that the light is transmitted to the user's skin (e.g., 520 in FIG. 5). The grating coupler arrays (340) may be arranged so that the collection of scattered photons by the photodetector (350) is optimized. To this end, the grating coupler arrays (340) may be positioned and designed to maximize the emission of light at different angles.

[0087] For example, multiple grating coupler arrays (340) may be arranged randomly or in groups. According to one embodiment, at least two grating coupler arrays (340) may be placed around a photodetector (350) for effective sensing operation. According to one embodiment, the length of the waveguide (440) may be designed to vary depending on the structure and dimensions of the photonic integrated circuit (310). For example, the length of the waveguide (440) may be designed considering the wavelength of light and the target skin depth. For example, if blood glucose levels are to be measured, the distance between the laser source (410) and the photodetector (350) may be designed to be about 1 mm to obtain sufficient scattered photons from the skin surface. According to one embodiment, the wavelengths of light emitted by the grating coupler arrays (340) may be set uniformly or varied depending on the intended application and power supply. For example, applying the wavelengths of light to the skin simultaneously can improve photonic input and reduce noise and measurement time.

[0088] According to one embodiment, a plurality of grating coupler arrays (340) may be symmetrically arranged with respect to a photodetector (350).

[0089] According to one embodiment, a plurality of grating coupler arrays (340) are arranged between a photodetector (350) and a first laser source (411) and receive light spectrally separated in a first wavelength range (f11) through a waveguide (440), a first array (341) arranged between a photodetector (350) and a second laser source (412) and receive light spectrally separated in a second wavelength range (f21) through a waveguide (440), a second array (342) arranged between a photodetector (350) and a third laser source (413) and receive light spectrally separated in a third wavelength range (f31) through a waveguide (440), and a fourth array (344) arranged between a photodetector (350) and a fourth laser source (414) and receive light spectrally separated in a fourth wavelength range (f41) through a waveguide (440). It can be included.

[0090] According to one embodiment, the first array (341) includes at least one first grid coupler arranged parallel to the second direction (DR2), the second array (342) includes at least one second grid coupler arranged parallel to the first direction (DR1), the third array (343) includes at least one third grid coupler arranged parallel to the second direction (DR2), and the fourth array (344) may include at least one fourth grid coupler arranged parallel to the first direction (DR1).

[0091] According to one embodiment, the waveguide (440) receives light emitted from a plurality of laser sources (410) and can transmit the received light to a plurality of grating coupler arrays (340).

[0092] According to one embodiment, the waveguide (440) may include at least one first waveguide (441) that receives light emitted from a first laser source (411) and transmits the received light to a first array (341), at least one second waveguide (442) that receives light emitted from a second laser source (412) and transmits the received light to a second array (342), at least one third waveguide (443) that receives light emitted from a third laser source (413) and transmits the received light to a third array (343), and at least one fourth waveguide (444) that receives light emitted from a fourth laser source (414) and transmits the received light to a first array (341).

[0093] According to one embodiment, the photonic integrated circuit (310) may further include a signal processing unit (430) that controls a plurality of laser sources (410) and a photodetector (350), and a thermal management unit (420).

[0094] According to one embodiment, the signal processing unit (430) may be placed on-chip within the photonic integrated circuit (310) and may perform tasks such as noise reduction, amplification, and initial data processing to enable real-time analysis of collected physiological signals. According to one embodiment, the signal processing unit (430) may be configured to process the characteristics of signals detected by the photodetector (350). The signal processing unit (430) may provide a noise reduction function for the detected signal and amplification function for the detected signal. According to one embodiment, the power consumption of the sensor module (211) may be reduced as the signal processing unit (430) is placed on-chip within the photonic integrated circuit (310).

[0095] According to one embodiment, the signal processing unit (430) may include a machine learning algorithm. For example, the signal processing unit (430) can use a machine learning algorithm to filter noise from the detected signal and improve the accuracy of real-time sensing.

[0096] According to one embodiment, the thermal management unit (420) may be a thermal via or a heat sink. According to one embodiment, the thermal management unit (420) may be placed around a plurality of laser sources (410), but the present invention is not limited thereto. According to one embodiment, the thermal management unit (420) may be formed of aluminum nitride (AlN) or copper material.

[0097] According to one embodiment, the material of the photodetector (350) may be as follows. For example, the photodetector (350) may be formed of silicon material for visible light and near-infrared applications. The photodetector (350) may be formed of a material such as indium gallium arsenide (InGaAs) for infrared applications.

[0098] According to one embodiment, the substrate of the photonic integrated circuit (310) may be composed of silicon-on-insulator (SOI) or indium phosphide (InP) for excellent optical properties in long wavelength applications.

[0099] According to one embodiment, the laser source may be made of gallium arsenide (GaAs) for near-infrared emission, or of InP for emitting a wavelength of about 1000 nm or more.

[0100] According to one embodiment, a plurality of grating coupler arrays (340) may be formed from materials such as silicon nitride (SiN) or SiO2, which are optimized for optical coupling to the skin. According to one embodiment, a plurality of grating coupler arrays (340) may be arranged in various configurations (including symmetric or asymmetric patterns) around a photodetector (350) to accommodate various physiological monitoring requirements. A plurality of grating coupler arrays (340) may be fabricated to emit the same wavelength at different locations around the photodetector (350), which can increase the number of input photons directed toward the skin. For example, by arranging a plurality of grating coupler arrays (340) in a symmetric or asymmetric pattern, photon scattering may be enhanced, and the ability of the photodetector (350) to collect scattered photons may be improved, thereby enabling more sensitive and accurate measurement of physiological signals.

[0101] According to one embodiment, the laser source may emit light at various wavelengths, which can be adjusted to suit various tissue penetration depths and specific physiological parameters (e.g., oxygen saturation, heart rate, glucose levels). For example, near-infrared wavelengths (800 nm to 1000 nm) may penetrate deep into tissue, while visible light wavelengths may be used for surface-level detection. According to one embodiment, the laser source may be designed in various ways considering the penetration depth of each wavelength into skin tissue and the corresponding biomarkers. The laser source may be configured to detect biomarkers accumulated in body tissues or distributed at a certain concentration, such as glucose, hemoglobin, alcohol, or antioxidants, by considering the physiological characteristics according to wavelength. For example, oxygen saturation may be detected based on the ratio of hemoglobin to oxyhemoglobin concentrations. According to one embodiment, the penetration depth into skin tissue according to the wavelength of light emitted from the laser source may be greater as the wavelength increases. For example, a laser source can precisely measure heart rate by targeting blood vessels through the emission of infrared wavelength light. For example, a laser source can measure heart rate resistant to movement by targeting the epidermis through the emission of green wavelength light. For example, a laser source can measure the concentration and distribution of Advanced Glycation End Products (AGEs) accumulated on the skin by the emission of ultraviolet wavelength light.

[0102] According to one embodiment, the waveguide (440) may be formed of a material such as SiN, Si, or InP selected for optical transmission efficiency.

[0103] FIG. 5 is a conceptual diagram illustrating the sensing operation of a photonic integrated circuit (310) according to one embodiment.

[0104] The photonic integrated circuit (310) shown in FIG. 5 may be substantially the same as the photonic integrated circuit (310) shown in FIG. 4.

[0105] Referring to FIG. 5, the photonic integrated circuit (310) may include a plurality of laser sources (410), a photodetector (350) positioned at the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340).

[0106] According to one embodiment, the photodetector (350) may be positioned at the center of an array of a plurality of grating coupler arrays (340). By being positioned at the center, the photodetector (350) can receive photons of light scattered at various angles when light emitted from surrounding laser sources (410) is scattered from the skin. As the photodetector (350) is positioned at the center, the accuracy and sensitivity of the sensing operation can be increased.

[0107] According to one embodiment, a plurality of grating coupler arrays (340) may be arranged around a photodetector (350) positioned in the center of a photonic integrated circuit (310). The grating coupler arrays (340) may couple light emitted from laser sources (410) so that the light is transmitted to the user's skin (e.g., 520 in FIG. 5). The grating coupler arrays (340) may be arranged so that the collection of scattered photons by the photodetector (350) is optimized. To this end, the grating coupler arrays (340) may be positioned and designed to maximize the emission of light at different angles.

[0108] For example, light emitted from the first laser source (411) is input into the first waveguide (441), and the first waveguide (441) can transmit the input light to the first array (341). The first array (341) couples the light emitted from the first laser source (411), and the coupled light (511) is scattered by the user's skin, and the scattered light can be detected by the light detector (350).

[0109] For example, light emitted from the third laser source (413) is input into the third waveguide (443), and the third waveguide (443) can transmit the input light to the third array (343). The third array (343) couples the light emitted from the third laser source (413), and the coupled light (513) is scattered by the user's skin, and the scattered light can be detected by the photodetector (350). By positioning the photodetector (350) between the first array (341) and the third array (343), photon input is improved, and noise and measurement time can be reduced.

[0110] FIG. 6 is a graph illustrating the wavelength range of light of a plurality of laser sources (410) according to one embodiment.

[0111] Referring to FIG. 6, according to one embodiment, a plurality of laser sources (410) may include a first laser source (411) which is positioned in a first direction (DR1) from a photodetector (350) and spectrally outputs light of a first wavelength range (f11); a second laser source (412) which is positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a second wavelength range (f21); a third laser source (413) which is positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a third wavelength range (f31); and a fourth laser source (414) which is positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) and spectrally outputs light of a fourth wavelength range (f41).

[0112] According to one embodiment, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may differ from each other. For example, the first wavelength range (f11) may have a first center wavelength (f1), the second wavelength range (f21) may have a second center wavelength (f2), the third wavelength range (f31) may have a third center wavelength (f3), and the fourth wavelength range (f41) may have a fourth center wavelength (f4). According to one embodiment, the second center wavelength (f2) may be larger than the first center wavelength (f1). According to one embodiment, the third center wavelength (f3) may be larger than the second center wavelength (f2). According to one embodiment, the fourth center wavelength (f4) may be larger than the third center wavelength (f3).

[0113] According to one embodiment, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may overlap at least partially with one another. For example, the first wavelength range (f11) and the second wavelength range (f21) may overlap at least partially. For example, the second wavelength range (f21) and the third wavelength range (f31) may overlap at least partially. For example, the third wavelength range (f31) and the fourth wavelength range (f41) may overlap at least partially with one another.

[0114] According to various embodiments, unlike the illustrated example, the first wavelength range (f11) and the third wavelength range (f31) are the same, the second wavelength range (f21) and the fourth wavelength range (f41) are the same, and the first wavelength range (f11) and the second wavelength range (f21) may be different from each other. For example, the first wavelength range (f11) of light emitted from the first laser source (411) may be substantially the same as the third wavelength range (f31) of light emitted from the third laser source (413). For example, the second wavelength range (f21) of light emitted from the second laser source (412) may be substantially the same as the fourth wavelength range (f41) of light emitted from the fourth laser source (414). A photon integrated circuit (310) according to one embodiment can improve photon scattering and improve the ability of a photodetector (350) to collect scattered photons, thereby enabling more sensitive and accurate measurement of physiological signals.

[0115] FIG. 7 is a diagram illustrating the arrangement of a plurality of grid coupler arrays (340) according to one embodiment.

[0116] The embodiment of FIG. 7 may be similar to the embodiment of FIG. 4 in at least some parts. Hereinafter, only the embodiment of FIG. 7 that differs from the embodiment of FIG. 4 will be described. Accordingly, features not described in FIG. 7 will be replaced by the description of the embodiment of FIG. 4.

[0117] The embodiment of FIG. 7 differs from the embodiment of FIG. 4 in that a plurality of grating coupler arrays (340) are arranged to surround the photodetector (350) in a circular manner. For example, as the plurality of grating coupler arrays (340) are arranged to surround the photodetector (350) in a circular manner, the distance from the photodetector (350) to each grating coupler included in the plurality of grating coupler arrays (340) may all be the same. A photon integrated circuit (310) according to one embodiment can enhance photon scattering and improve the ability of the photodetector (350) to collect scattered photons, thereby enabling more sensitive and accurate measurement of physiological signals.

[0118] FIG. 8 is a diagram of a photonic integrated circuit (310) according to one embodiment.

[0119] The embodiment of FIG. 8 may be similar to the embodiment of FIG. 4 in at least some parts. Hereinafter, only the embodiment of FIG. 8 that differs from the embodiment of FIG. 4 will be described. Accordingly, features not described in FIG. 8 will be replaced by the description of the embodiment of FIG. 4.

[0120] The embodiment of FIG. 8 differs from the embodiment of FIG. 4 in that the photonic integrated circuit (310) includes a first laser source (411), a second laser source (412), and a third laser source (413). For example, the laser sources integrated into the photonic integrated circuit (310) may not be limited to including four laser sources (410) as in the embodiment of FIG. 4. As illustrated in the example, the photonic integrated circuit (310) includes a first laser source (411), a second laser source (412), and a third laser source (413) positioned around a photodetector (350), and the distance from the photodetector (350) to each of the first laser source (411), the second laser source (412), and the third laser source (413) may be the same. For example, the distance between the photodetector (350) and the first laser source (411) may be the same as the distance between the photodetector (350) and the second laser source (412). For example, the distance between the photodetector (350) and the first laser source (411) may be the same as the distance between the photodetector (350) and the third laser source (413).

[0121] FIG. 9 is a flowchart illustrating a method of operating a wearable electronic device (200) according to one embodiment.

[0122] The operations illustrated in FIG. 9 can be performed by instructions stored in memory (e.g., memory (130) of FIG. 1). For example, when the instructions are executed by a processor (e.g., processor (120) of FIG. 1), the wearable electronic device (200) (e.g., electronic device (101) of FIG. 1) can perform the operations illustrated in FIG. 9.

[0123] At least some of the operations shown in FIG. 9 may be omitted. At least some operations mentioned in the present disclosure with reference to other drawings may be additionally inserted before or after at least some of the operations shown in FIG. 9.

[0124] According to one embodiment, at least some of the operations illustrated in FIG. 9 can be performed sequentially.

[0125] According to one embodiment, at least some of the operations shown in FIG. 9 can be performed in parallel (simultaneously).

[0126] According to one embodiment, at least some of the operations shown in FIG. 9 may be performed with their order changed.

[0127] Hereinafter, a method of operating a wearable electronic device (200) according to one embodiment will be described with reference to FIG. 9.

[0128] In operation 910, a wearable electronic device (200) according to one embodiment may control laser sources (410) so that laser sources (410) emit light. According to one embodiment, a photonic integrated circuit (310) may detect various biomarkers of a user by emitting a laser of a specific wavelength (e.g., 2000 nm to 2400 nm, or 1500 nm to 1800 nm, or 1000 nm to 1400 nm) to detect bio-information. According to one embodiment, biomarkers may include proteins, DNA, RNA, metabolites, bacteria, viruses, etc. For example, biomarkers may include at least some of blood glucose, proteins, lactic acid, alcohol, glucose, hemoglobin, bilirubin, cholesterol, albumin, creatinine, and glycated hemoglobin. The photonic integrated circuit (310) may detect various biomarkers depending on various body parts such as skin and blood.

[0129] According to one embodiment, a plurality of laser sources (410) may be symmetrically arranged with respect to a photodetector (350). According to one embodiment, the wavelength of light from the laser sources (410) may be maintained within a narrow range and may be set to a wavelength suitable for specific physiological parameters being monitored, such as blood oxygen or glucose levels.

[0130] According to one embodiment, a plurality of laser sources (410) may include a first laser source (411) which is positioned in a first direction (DR1) from a photodetector (350) and spectrally outputs light of a first wavelength range (f11); a second laser source (412) which is positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a second wavelength range (f21); a third laser source (413) which is positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) and spectrally outputs light of a third wavelength range (f31); and a fourth laser source (414) which is positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) and spectrally outputs light of a fourth wavelength range (f41).

[0131] According to one embodiment, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be different from each other.

[0132] According to one embodiment, the first wavelength range (f11) and the third wavelength range (f31) are the same, the second wavelength range (f21) and the fourth wavelength range (f41) are the same, and the first wavelength range (f11) and the second wavelength range (f21) may be different from each other.

[0133] In operation 920, a wearable electronic device (200) according to one embodiment may have a plurality of grating coupler arrays (340) capable of transmitting light to the skin. According to one embodiment, a waveguide (440) may receive light emitted from a plurality of laser sources (410) and transmit the received light to a plurality of grating coupler arrays (340). According to one embodiment, a plurality of grating coupler arrays (340) may be arranged around a photodetector (350) positioned in the center of a photonic integrated circuit (310). The grating coupler arrays (340) may couple light emitted from the laser sources (410) so that the light is transmitted to the user's skin (e.g., 520 in FIG. 5). The grating coupler arrays (340) may be arranged so that the collection of scattered photons by the photodetector (350) is optimized. To this end, the grating coupler arrays (340) can be positioned and designed to maximize the emission of light at different angles.

[0134] In operation 930, a wearable electronic device (200) according to one embodiment can detect photons of light scattered by the skin through a photodetector (350). According to one embodiment, the photodetector (350) may be formed of silicon material for visible light and near-infrared applications. For infrared applications, the photodetector (350) may be formed of a material such as indium gallium arsenide (InGaAs).

[0135] In operation 940, a wearable electronic device (200) according to one embodiment can process the detected light photons by a signal processing unit (430). According to one embodiment, the signal processing unit (430) can be placed on-chip within a photonic integrated circuit (310) and can perform tasks such as noise reduction, amplification, and initial data processing to enable real-time analysis of collected physiological signals. According to one embodiment, the signal processing unit (430) can be configured to process the characteristics of signals detected by a photodetector (350). The signal processing unit (430) can provide a noise reduction function for the detected signal and amplification function for the detected signal. According to one embodiment, the power consumption of the sensor module (211) can be reduced as the signal processing unit (430) is placed on-chip within the photonic integrated circuit (310).

[0136] According to one embodiment, the signal processing unit (430) may include a machine learning algorithm. For example, the signal processing unit (430) can use a machine learning algorithm to filter noise from the detected signal and improve the accuracy of real-time sensing.

[0137] FIG. 10 is a flowchart illustrating a method in which laser sources (410) of a photonic integrated circuit (310) according to one embodiment sequentially output light.

[0138] The operations illustrated in FIG. 10 can be performed by instructions stored in memory (e.g., memory (130) of FIG. 1). For example, when the instructions are executed by a processor (e.g., processor (120) of FIG. 1), the wearable electronic device (200) (e.g., electronic device (101) of FIG. 1) can perform the operations illustrated in FIG. 10.

[0139] At least some of the operations shown in FIG. 10 may be omitted. At least some operations mentioned in the present disclosure with reference to other drawings may be additionally inserted before or after at least some of the operations shown in FIG. 10.

[0140] According to one embodiment, at least some of the operations illustrated in FIG. 10 can be performed sequentially.

[0141] According to one embodiment, at least some of the operations shown in FIG. 10 can be performed in parallel (simultaneously).

[0142] According to one embodiment, at least some of the operations illustrated in FIG. 10 may be performed with their order changed.

[0143] Hereinafter, with reference to FIG. 10, a method for laser sources (410) of a photonic integrated circuit (310) according to one embodiment to sequentially output light will be described.

[0144] In operation 1010, a wearable electronic device (200) according to one embodiment may output light of a first wavelength range (e.g., the first wavelength range (f11) of FIG. 6) through a first laser source (411). For example, when outputting light of the first wavelength range (f11), the wearable electronic device (200) may divide the first wavelength range (f11) into a plurality of first sub-wavelengths and sequentially output light for each of the plurality of first sub-wavelengths included in the first wavelength range (f11). For example, the wearable electronic device (200) may sequentially output light for each of the plurality of first sub-wavelengths from a low-band wavelength to a high-band wavelength.

[0145] In operation 1020, a wearable electronic device (200) according to one embodiment may output light of a second wavelength range (e.g., a second wavelength range (f21) of FIG. 6) through a second laser source (412). For example, when outputting light of the second wavelength range (f21), the wearable electronic device (200) may divide the second wavelength range (f21) into a plurality of second sub-wavelengths and sequentially output light for each of the plurality of second sub-wavelengths included in the second wavelength range (f21). For example, the wearable electronic device (200) may sequentially output light for each of the plurality of second sub-wavelengths from a low-band wavelength to a high-band wavelength.

[0146] In operation 1030, a wearable electronic device (200) according to one embodiment may output light of a third wavelength range (e.g., a third wavelength range (f31) of FIG. 6) through a third laser source (413). For example, when outputting light of the third wavelength range (f31), the wearable electronic device (200) may divide the second wavelength range (f31) into a plurality of third sub-wavelengths and sequentially output light for each of the plurality of third sub-wavelengths included in the third wavelength range (f31). For example, the wearable electronic device (200) may sequentially output light for each of the plurality of third sub-wavelengths from a low-band wavelength to a high-band wavelength.

[0147] In operation 1040, a wearable electronic device (200) according to one embodiment may output light of a fourth wavelength range (e.g., a fourth wavelength range (f41) of FIG. 6) through a fourth laser source (414). For example, when outputting light of the fourth wavelength range (f41), the wearable electronic device (200) may divide the second wavelength range (f41) into a plurality of fourth sub-wavelengths and sequentially output light for each of the plurality of fourth sub-wavelengths included in the fourth wavelength range (f41). For example, the wearable electronic device (200) may sequentially output light for each of the plurality of fourth sub-wavelengths from a low-band wavelength to a high-band wavelength.

[0148] According to one embodiment, as described with reference to FIG. 6, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may differ from each other. For example, the first wavelength range (f11) may have a first center wavelength (f1), the second wavelength range (f21) may have a second center wavelength (f2), the third wavelength range (f31) may have a third center wavelength (f3), and the fourth wavelength range (f41) may have a fourth center wavelength (f4). According to one embodiment, the second center wavelength (f2) may be larger than the first center wavelength (f1). According to one embodiment, the third center wavelength (f3) may be larger than the second center wavelength (f2). According to one embodiment, the fourth center wavelength (f4) may be larger than the third center wavelength (f3).

[0149] According to one embodiment, the first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may overlap at least partially with one another. For example, the first wavelength range (f11) and the second wavelength range (f21) may overlap at least partially. For example, the second wavelength range (f21) and the third wavelength range (f31) may overlap at least partially. For example, the third wavelength range (f31) and the fourth wavelength range (f41) may overlap at least partially with one another.

[0150] According to one embodiment, as illustrated in the example, depending on the application field and the power supply of the wearable electronic device (200), light emission from a laser source may be performed sequentially by a plurality of laser sources (410) using the same wavelength. According to one embodiment, the photonic integrated circuit (310) may sequentially emit light of different wavelength ranges for each channel of the light-emitting laser source. According to one embodiment, the photonic integrated circuit (310) may more accurately measure bio-information corresponding to each wavelength. For example, a method of sequentially outputting a plurality of lights having different wavelength ranges is useful for complex multi-wavelength measurements and can be used to collect various physiological signals by irradiating different layers of the skin with a plurality of lights having different wavelength ranges.

[0151] According to one embodiment, unlike the illustrated example, light emission from a laser source may be performed simultaneously across multiple laser sources (410) using the same wavelength, depending on the application field and the power supply of the wearable electronic device (200). According to one embodiment, by performing light emission from the laser sources (410) simultaneously, the wearable electronic device (200) can generate a uniform light distribution across the entire skin area targeted for the acquisition of bio-information. According to one embodiment, the photon integrated circuit (310) can enhance photon input to the photodetector (350) and enhance the signal-to-noise ratio for accurate physiological measurements.

[0152] According to one embodiment, the wearable electronic device (200) may simultaneously perform the operation of a first laser source (411) outputting first lights spectrally separated in a first wavelength range (f11), a second laser source (412) outputting second lights spectrally separated in a second wavelength range (f21), a third laser source (413) outputting third lights spectrally separated in a third wavelength range (f31), and a fourth laser source (414) outputting fourth lights spectrally separated in a fourth wavelength range (f41). In this case, the photodetector (350) may receive the first light, the second light, the third light, and the fourth light simultaneously, at least temporarily.

[0153] According to one embodiment, the photodetector (350) may operate as follows to process a first light, a second light, a third light, and a fourth light that are input at least temporarily simultaneously. For example, the photodetector (350) may include a first channel filter that receives the first light, a second channel filter that receives the second light, a third channel filter that receives the third light, and a fourth channel filter that receives the fourth light. For example, the first channel filter may be placed in a first region of the photodetector (350), the second channel filter may be placed in a second region of the photodetector (350), the third channel filter may be placed in a third region of the photodetector (350), and the fourth channel filter may be placed in a fourth region of the photodetector (350). The first region of the photodetector (350) where the first channel filter is placed may be a region adjacent to the first laser source (411). The second region of the photodetector (350) where the second channel filter is placed may be a region adjacent to the second laser source (412). The third region of the photodetector (350) where the third channel filter is placed may be a region adjacent to the third laser source (413). The fourth region of the photodetector (350) where the fourth channel filter is placed may be a region adjacent to the fourth laser source (414).

[0154] According to one embodiment, the photodetector (350) may operate as follows to sequentially process the first light, the second light, the third light, and the fourth light that are input at least temporarily simultaneously. For example, the photodetector (350) may be operated to sequentially input and process the first light, the second light, the third light, and the fourth light by dividing at least a portion of the period during which the first to fourth laser sources (411, 412, 413, 414) simultaneously output light into a first time for inputting and processing the first light, a second time for inputting and processing the second light, a third time for inputting and processing the third light, and a fourth time for inputting and processing the fourth light.

[0155] According to one embodiment, the photodetector (350) may operate as follows to process the first light, the second light, the third light, and the fourth light that are input simultaneously at least temporarily. For example, the photodetector (350) may separate the lights input simultaneously at least temporarily into the first light, the second light, the third light, and the fourth light according to wavelength, analyze the amount of light of each of the separated first light, second light, third light, and fourth light, and store it.

[0156] FIG. 11 is a flowchart illustrating a method in which at least some of the laser sources (410) of a photonic integrated circuit (310) according to one embodiment simultaneously output light.

[0157] The operations illustrated in FIG. 11 can be performed by instructions stored in memory (e.g., memory (130) of FIG. 1). For example, when the instructions are executed by a processor (e.g., processor (120) of FIG. 1), the wearable electronic device (200) (e.g., electronic device (101) of FIG. 1) can perform the operations illustrated in FIG. 11.

[0158] At least some of the operations shown in FIG. 11 may be omitted. At least some operations mentioned in the present disclosure with reference to other drawings may be additionally inserted before or after at least some of the operations shown in FIG. 11.

[0159] According to one embodiment, at least some of the operations illustrated in FIG. 11 can be performed sequentially.

[0160] According to one embodiment, at least some of the operations shown in FIG. 11 can be performed in parallel (simultaneously).

[0161] According to one embodiment, at least some of the operations shown in FIG. 11 may be performed with their order changed.

[0162] Hereinafter, with reference to FIG. 11, a method in which at least some of the laser sources (410) of a photonic integrated circuit (310) according to one embodiment simultaneously output light is described.

[0163] In operation 1110, a wearable electronic device (200) according to one embodiment may at least temporarily simultaneously perform the operation of spectrally outputting light of a first wavelength range (f11) through a first laser source (411) and the operation of spectrally outputting light of a third wavelength range (f31) through a third laser source (413). The first wavelength range (f11) and the third wavelength range (f31) may be the same. For example, the first wavelength range (f11) of light emitted from the first laser source (411) may be substantially the same as the third wavelength range (f31) of light emitted from the third laser source (413).

[0164] In operation 1120, a wearable electronic device (200) according to one embodiment may at least temporarily simultaneously perform the operation of spectrally outputting light of a second wavelength range (f21) through a second laser source (412) and the operation of spectrally outputting light of a fourth wavelength range (f41) through a fourth laser source (414). The second wavelength range (f21) and the fourth wavelength range (f41) may be the same. For example, the second wavelength range (f21) of light emitted from the second laser source (412) may be substantially the same as the fourth wavelength range (f41) of light emitted from the fourth laser source (414).

[0165] According to one embodiment, when grating coupler arrays (340) located in opposite directions around a photodetector (350) simultaneously output light of the same wavelength range, signal reception can be stronger compared to the method according to the embodiment of FIG. 10. For example, a photonic integrated circuit (310) can support multi-wavelength measurement by emitting the same light intensity from two or more grating coupler arrays (340) and can effectively increase sensor sensitivity.

[0166] A wearable electronic device (200) according to one embodiment of the present disclosure includes a sensor module (211) comprising a photonic integrated circuit (310) for detecting bio-information, a processor, and a memory for storing instructions, wherein the photonic integrated circuit (310) may include a plurality of laser sources (410), a photodetector (350) positioned at the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) for transmitting light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340).

[0167] The plurality of laser sources (410) can be arranged symmetrically with respect to the photodetector (350).

[0168] The plurality of grating coupler arrays (340) can be arranged symmetrically with respect to the photodetector (350).

[0169] The plurality of laser sources (410) may include a first laser source (411) positioned in a first direction (DR1) from the photodetector (350) and spectrally outputting light of a first wavelength range (f11); a second laser source (412) positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) and spectrally outputting light of a second wavelength range (f21); a third laser source (413) positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) and spectrally outputting light of a third wavelength range (f31); and a fourth laser source (414) positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) and spectrally outputting light of a fourth wavelength range (f41).

[0170] The plurality of grating coupler arrays (340) are arranged between the photodetector (350) and the first laser source (411) and receive light spectrally separated in the first wavelength range (f11) through the waveguide (440); a first array (341) arranged between the photodetector (350) and the second laser source (412) and receive light spectrally separated in the second wavelength range (f21) through the waveguide (440); a third array (343) arranged between the photodetector (350) and the third laser source (413) and receive light spectrally separated in the third wavelength range (f31) through the waveguide (440); and arranged between the photodetector (350) and the fourth laser source (414) and receive light spectrally separated in the fourth wavelength range (f41) through the waveguide (440). It may include a fourth array (344) that receives light inputs.

[0171] The first array (341) may include at least one first grid coupler arranged parallel to the second direction (DR2), the second array (342) may include at least one second grid coupler arranged parallel to the first direction (DR1), the third array (343) may include at least one third grid coupler arranged parallel to the second direction (DR2), and the fourth array (344) may include at least one fourth grid coupler arranged parallel to the first direction (DR1).

[0172] The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be different from each other.

[0173] The above commands may sequentially perform the following operations when executed by the processor: the wearable electronic device (200) spectrally outputting light of a first wavelength range (f11) through the first laser source (411), spectrally outputting light of a second wavelength range (f21) through the second laser source (412), spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414).

[0174] The above commands may, when executed by the processor, cause the wearable electronic device (200) to perform at least temporarily and simultaneously the operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411), the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412), the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414).

[0175] The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be different from each other.

[0176] The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be the same as each other.

[0177] The above commands, when executed by the processor, may cause the wearable electronic device (200) to perform at least two of the following operations simultaneously at a temporary time: the operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411), the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412), the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414).

[0178] The first wavelength range (f11) and the third wavelength range (f31) are the same, the second wavelength range (f21) and the fourth wavelength range (f41) are the same, and the first wavelength range (f11) and the second wavelength range (f21) may be different from each other.

[0179] The above commands, when executed by the processor, may cause the wearable electronic device (200) to perform, at least temporarily simultaneously, the operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411) and the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and at least temporarily simultaneously perform the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412) and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414).

[0180] The plurality of grating coupler arrays (340) can be arranged to surround the light detector (350) in a circular manner.

[0181] In a driving method for a wearable electronic device (200) according to one embodiment of the present disclosure, the wearable electronic device (200) includes a photonic integrated circuit (310) for detecting bio-information, wherein the photonic integrated circuit (310) includes a plurality of laser sources (410), a photodetector (350) disposed in the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340), and the driving method for the wearable electronic device (200) controls a first laser source (411) disposed in a first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to transmit light of a first wavelength range (f11). The operation may include: a spectrally outputting operation; a second laser source (412) positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a second wavelength range (f21); a third laser source (413) positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a third wavelength range (f31); and a fourth laser source (414) positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a fourth wavelength range (f41).

[0182] The operation of receiving light spectrally separated in the first wavelength range (f11) through a first array (341) disposed between the photodetector (350) and the first laser source (411) among the plurality of grating coupler arrays (340); the operation of receiving light spectrally separated in the second wavelength range (f21) through a second array (342) disposed between the photodetector (350) and the second laser source (412) among the plurality of grating coupler arrays (340); the operation of receiving light spectrally separated in the third wavelength range (f31) through a third array (343) disposed between the photodetector (350) and the third laser source (413) among the plurality of grating coupler arrays (340); and a fourth array disposed between the photodetector (350) and the fourth laser source (414) among the plurality of grating coupler arrays (340). The operation of receiving light spectrally separated in the fourth wavelength range (f41) through the array (344) may further include

[0183] The first wavelength range (f11) and the third wavelength range (f31) are the same, the second wavelength range (f21) and the fourth wavelength range (f41) are the same, and the first wavelength range (f11) and the second wavelength range (f21) may be different from each other.

[0184] The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be different from each other.

[0185] The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) may be the same as each other.

Claims

1. In a wearable electronic device (200), A sensor module (211) including a photonic integrated circuit (310) for detecting bio-information; processor; and It includes memory for storing instructions, The above photon integrated circuit (310) is, Multiple laser sources (410); A photodetector (350) positioned in the center of the array of the plurality of laser sources (410); A plurality of grating coupler arrays (340) arranged to surround the above photodetector (350); and A waveguide (440) comprising light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340), Wearable electronic device (200).

2. In Paragraph 1, The plurality of laser sources (410) are symmetrically arranged with respect to the photodetector (350). Wearable electronic device (200).

3. In Paragraph 2, The plurality of grating coupler arrays (340) are arranged symmetrically with respect to the photodetector (350). Wearable electronic device (200).

4. In Paragraph 3, The above plurality of laser sources (410) A first laser source (411) positioned in a first direction (DR1) from the above photodetector (350) and spectrally outputting light of a first wavelength range (f11); A second laser source (412) positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the above photodetector (350) and spectrally outputting light of a second wavelength range (f21); A third laser source (413) positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) and spectrally outputting light of a third wavelength range (f31); and A fourth laser source (414) that is positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) and spectrally outputs light of a fourth wavelength range (f41), Wearable electronic device (200).

5. In Paragraph 4, The above plurality of grid coupler arrays (340) are A first array (341) disposed between the photodetector (350) and the first laser source (411) and receiving light spectrally separated in the first wavelength range (f11) through the waveguide (440); A second array (342) disposed between the photodetector (350) and the second laser source (412) and receiving light spectrally separated in the second wavelength range (f21) through the waveguide (440); A third array (343) disposed between the photodetector (350) and the third laser source (413) and receiving light spectrally separated in the third wavelength range (f31) through the waveguide (440); and A fourth array (344) disposed between the photodetector (350) and the fourth laser source (414) and receiving light spectrally separated in the fourth wavelength range (f41) through the waveguide (440), Wearable electronic device (200).

6. In Paragraph 5, The first array (341) includes at least one first grid coupler arranged parallel to the second direction (DR2), and The second array (342) includes at least one second grid coupler arranged parallel to the first direction (DR1), and The third array (343) includes at least one third grid coupler arranged parallel to the second direction (DR2), and The above-mentioned fourth array (344) includes at least one fourth grid coupler arranged parallel to the first direction (DR1), Wearable electronic device (200).

7. In Paragraph 5, The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) are different from each other. Wearable electronic device (200).

8. In Paragraph 7, When the above instructions are executed by the processor, the wearable electronic device (200): The operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411), the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412), the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414) are performed sequentially. Wearable electronic device (200).

9. In Paragraph 7, When the above instructions are executed by the processor, the wearable electronic device (200): The operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411), the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412), the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414) are performed at least temporarily and simultaneously. Wearable electronic device (200).

10. In Paragraph 8 or 9, The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) are different from each other. Wearable electronic device (200).

11. In Paragraph 8 or 9, The first wavelength range (f11), the second wavelength range (f21), the third wavelength range (f31), and the fourth wavelength range (f41) are identical to each other. Wearable electronic device (200).

12. In Paragraph 7, When the above instructions are executed by the processor, the wearable electronic device (200): The operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411), the operation of spectrally outputting light of a second wavelength range (f21) through the second laser source (412), the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413), and the operation of spectrally outputting light of a fourth wavelength range (f41) through the fourth laser source (414) are to be performed at least two of these operations at least temporarily simultaneously. Wearable electronic device (200).

13. In Paragraph 5, The first wavelength range (f11) and the third wavelength range (f31) are the same, The second wavelength range (f21) and the fourth wavelength range (f41) are the same, The first wavelength range (f11) and the second wavelength range (f21) are different from each other. Wearable electronic device (200).

14. In Paragraph 13, When the above instructions are executed by the processor, the wearable electronic device (200): The operation of spectrally outputting light of a first wavelength range (f11) through the first laser source (411) and the operation of spectrally outputting light of a third wavelength range (f31) through the third laser source (413) are performed at least temporarily simultaneously. The operation of spectrally outputting light of the second wavelength range (f21) through the second laser source (412) and the operation of spectrally outputting light of the fourth wavelength range (f41) through the fourth laser source (414) are performed at least temporarily and simultaneously. Wearable electronic device (200).

15. A method for operating a wearable electronic device (200), The wearable electronic device (200) comprises a photonic integrated circuit (310) for detecting bio-information, wherein the photonic integrated circuit (310) comprises a plurality of laser sources (410), a photodetector (350) positioned at the center of an array of the plurality of laser sources (410), a plurality of grating coupler arrays (340) arranged to surround the photodetector (350), and a waveguide (440) that transmits light emitted from the plurality of laser sources (410) to each of the plurality of grating coupler arrays (340). The driving method of the above-mentioned wearable electronic device (200) is, The operation of controlling a first laser source (411) positioned in a first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a first wavelength range (f11); Among the plurality of laser sources (410), the operation of controlling a second laser source (412) positioned in a second direction (DR2) perpendicular to the first direction (DR1) from the photodetector (350) to spectrally output light of a second wavelength range (f21); The operation of controlling a third laser source (413) positioned in a third direction (DR3) opposite to the first direction (DR1) from the photodetector (350) among the plurality of laser sources (410) to spectrally output light of a third wavelength range (f31); and Among the plurality of laser sources (410), the operation includes controlling a fourth laser source (414) positioned in a third direction (DR3) opposite to the second direction (DR2) from the photodetector (350) to spectrally output light of a fourth wavelength range (f41). method.

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