Wearable device and method for measuring skin fluorescence using same

Abstract

A wearable device is provided. The wearable device may comprise: a housing including a light transmission region; a board disposed inside the housing and including one surface facing the light transmission region; a first light receiving element disposed on the one surface of the board and configured to sense light of a first wavelength or longer; a second light receiving element disposed on the one surface of the board, spaced apart from the first light receiving element, and configured to sense light of a second wavelength or longer that is longer than the first wavelength; a first light emitting element positioned between the first light receiving element and the second light receiving element and configured to emit light of a third wavelength toward the light transmission region; and a second light emitting element positioned between the first light emitting element and the second light receiving element and configured to emit light of a fourth wavelength shorter than the third wavelength toward the light transmission region.

Description

Wearable device and skin fluorescence measurement method using the same

[0001] The present disclosure relates to an electronic device. More specifically, the present disclosure relates to a wearable device including a light-emitting unit and a light-receiving unit, and a skin fluorescence measurement method using the same.

[0002] Electronic devices can refer to devices that perform specific functions based on their embedded programs, such as home appliances, electronic notebooks, portable multimedia players, mobile communication terminals, tablet PCs (personal computers), audio / video devices, desktop / laptop computers, and car navigation systems. For example, these electronic devices can output stored information as audio or video.

[0003] As the integration of electronic devices increases and ultra-high-speed, high-capacity wireless communications become more widespread, a single electronic device, such as a mobile terminal, can now incorporate a variety of functions. For example, in addition to communication functions, entertainment functions like gaming, multimedia functions like music and video playback, communication and security functions like mobile banking, and even calendar management and electronic wallet functions are being integrated into a single electronic device. These electronic devices are also becoming smaller and more portable for users.

[0004] The above information is provided solely as background information to aid in understanding the present disclosure. No judgment or assertion is made as to whether any of the above information is applicable to prior art in connection with the present disclosure.

[0005] Aspects of the present disclosure aim to address at least the aforementioned problems and / or disadvantages and provide at least the advantages described below. Accordingly, one aspect of the present disclosure provides a wearable device including a light-emitting element and a light-receiving element, and a skin fluorescence measurement method using the same.

[0006] Additional aspects may be presented in part in the subsequent description, may be made clear through the description, or may be understood through the practice of the disclosed embodiments.

[0007] According to one aspect of the present disclosure, a wearable device is provided. The wearable device may include a housing including a light-transmitting region, a board disposed inside the housing and including a surface facing the light-transmitting region, a first light-receiving element disposed on the surface of the board and configured to detect light of a first wavelength or greater, a second light-receiving element disposed on the surface of the board and spaced apart from the first light-receiving element and configured to detect light of a second wavelength or greater longer than the first wavelength, a first light-emitting element positioned between the first light-receiving element and the second light-receiving element and configured to irradiate light of a third wavelength toward the light-transmitting region, and a second light-emitting element positioned between the first light-emitting element and the second light-receiving element and configured to irradiate light of a fourth wavelength shorter than the third wavelength toward the light-transmitting region.

[0008] According to another aspect of the present disclosure, a skin fluorescence measurement method is provided, which is performed by a wearable device including a light-emitting module configured to irradiate light to a user's skin and a light-receiving module configured to detect light emitted from the user's skin. The method may include the steps of irradiating at least one of red light, blue light, and green light to the user's skin through the light-emitting module by the wearable device and acquiring a skin color characteristic signal value through the light-receiving module, the step of irradiating infrared light to the user's skin through the light-emitting module by the wearable device and acquiring a skin thickness signal value through the light-receiving module, the step of setting an illuminance of ultraviolet light irradiated through the light-emitting module based on the acquired skin color characteristic signal value and the acquired skin thickness signal value by the wearable device, and the step of irradiating ultraviolet light with the set illuminance to the user's skin through the light-emitting module by the wearable device and acquiring a skin fluorescence signal value through the light-receiving module.

[0009] According to another aspect of the present disclosure, one or more non-transitory computer-readable storage media are provided having stored thereon one or more computer programs comprising computer-executable instructions that, when individually or jointly executed by one or more processors of a wearable device, cause the wearable device to perform operations. The above operations include emitting at least one of red light, blue light, and green light toward the user's skin through the light-emitting module by the wearable device, obtaining a skin color characteristic signal value through the light-receiving module by the wearable device, emitting infrared (IR) light toward the user's skin through the light-emitting module by the wearable device, obtaining a skin thickness characteristic signal value through the light-receiving module by the wearable device, setting the illuminance of ultraviolet (UV) light emitted through the light-emitting module based on the acquired skin color characteristic signal value and skin thickness characteristic signal value by the wearable device, and emitting UV light of the set illuminance toward the user's skin through the light-emitting module by the wearable device, and obtaining a skin fluorescence signal value through the light-receiving module.

[0010] Other aspects, advantages and key features of the present disclosure will become apparent to those skilled in the art from the following detailed description of various embodiments of the present disclosure, taken in conjunction with the accompanying drawings.

[0011] The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings.

[0012] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment of the present disclosure.

[0013] FIG. 2 is a perspective view of a wearable device showing the front side of the wearable device according to one embodiment of the present disclosure.

[0014] FIG. 3 is a perspective view of a wearable device showing the rear side of the wearable device according to one embodiment of the present disclosure.

[0015] FIG. 4 illustrates an example of a wearable device according to one embodiment of the present disclosure being worn on a user's wrist.

[0016] FIG. 5 is a cross-sectional view of a user's skin, consisting of an epidermal layer and a dermal layer, for explaining the principle of skin fluorescence measurement of a wearable device according to one embodiment of the present disclosure.

[0017] FIG. 6 illustrates light emitting elements and light receiving elements of a sensor module according to one embodiment of the present disclosure.

[0018] FIG. 7 is a cross-sectional view of a portion of a wearable device and a sensor module according to one embodiment of the present disclosure.

[0019] FIG. 8 illustrates the distance between light-emitting elements and light-receiving elements of a sensor module according to one embodiment of the present disclosure.

[0020] FIG. 9 illustrates a plurality of light-emitting modules and light-receiving elements according to one embodiment of the present disclosure.

[0021] FIG. 10 illustrates first light-emitting modules and light-receiving elements according to one embodiment of the present disclosure.

[0022] FIG. 11 illustrates light-emitting elements and light-receiving elements according to one embodiment of the present disclosure.

[0023] FIG. 12 illustrates light-emitting modules and light-receiving elements according to one embodiment of the present disclosure.

[0024] FIG. 13 is a block diagram of a portion of a wearable device according to one embodiment of the present disclosure.

[0025] FIG. 14 is a flowchart of a method for measuring skin fluorescence of a wearable device according to one embodiment of the present disclosure.

[0026] FIG. 15 is a flowchart of a skin fluorescence signal value acquisition step according to one embodiment of the present disclosure.

[0027] Throughout the drawings, the same reference numerals may be used to indicate identical components.

[0028] The following description, with reference to the accompanying drawings, is provided to facilitate a comprehensive understanding of various embodiments of the present disclosure, as defined by the claims and their equivalents. While it includes numerous specific details to aid understanding, these are merely exemplary. Accordingly, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0029] The terms and words used in the following description and claims are not limited to their bibliographic meanings, but are used to facilitate a clear and consistent understanding of the present disclosure by the inventors. Accordingly, it will be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is for illustrative purposes only and is not intended to limit the present disclosure as defined by the claims and their equivalents.

[0030] Unless the context clearly dictates otherwise, the singular forms of "a," "an," and "the" should be understood to include plural meanings. Thus, for example, "a component surface" could be understood to include one or more of the surfaces of the component.

[0031] It should be recognized that the blocks and combinations of flowcharts in each flowchart can be performed by one or more computer programs containing instructions. One or more computer programs may be stored entirely in a single memory device, or one or more computer programs may be stored in different parts across multiple memory devices.

[0032] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure.

[0033] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via 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) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0034] The processor (120) may include various processing circuits and / or multiple processors. For example, as used in this specification and claims, the term "processor" may include various processing circuits including at least one processor, one or more of which may be configured to individually and / or collectively perform the various functions described below in a distributed manner. As described below, when "processor," "at least one processor," and "one or more processors" are described as being configured to perform multiple functions, this includes, for example, instances where one processor performs some functions and another processor performs other functions, and instances where a single processor performs all of the stated functions. Furthermore, as an example, the at least one processor may include a combination of processors that perform the various functions described in a distributed manner. The at least one processor may execute program instructions to achieve or perform the various functions.

[0035] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0036] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, 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. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can 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 can include multiple artificial neural network layers.The artificial neural network may be one of 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, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0037] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0038] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0039] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0040] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0041] The display module (160) can visually provide information to an external party (e.g., a 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 the 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 a force generated by the touch.

[0042] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0043] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0044] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In 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.

[0045] The connection terminal (178) may include a connector through which the electronic device (101) may 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).

[0046] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0047] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0048] 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 as, for example, at least a part of a power management integrated circuit (PMIC).

[0049] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0050] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the 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 operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that 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., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a fifth generation (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 can 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 verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0051] The wireless communication module (192) can support a 5G network and next-generation communication technology following a 4G (fourth generation) network, for example, NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave (millimeter wave) band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), 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), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) may be configured to achieve a peak data rate (e.g., 20 Gbps or more) for eMBB implementation, a loss coverage (e.g., 164 dB or less) for mMTC implementation, or a U-plane latency (e.g., 0 for downlink (DL) and uplink (UL) respectively) for URLLC implementation.It can support latency of 5ms or less, or round trip of 1ms or less.

[0052] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In 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 the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0053] According to various embodiments, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0054] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0055] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via 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 executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, or 104) or the server (108). For example, when the electronic device (101) is to perform a certain 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 the function or at least a part of the service instead of executing the function or service itself or in addition. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an 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 process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the 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.

[0056] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0057] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together with the corresponding phrase among the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish the corresponding component from other corresponding components and do not limit the corresponding components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as being “coupled” or “connected” to another component (e.g., a second component), with or without the terms “functionally” or “communicatively,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0058] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0059] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate 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 executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0060] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0061] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component 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.

[0062] FIG. 2 is a perspective view of a wearable device (103) showing the front side of the wearable device (103) according to one embodiment of the present disclosure. FIG. 3 is a perspective view of a wearable device (103) showing the rear side of the wearable device (103) according to one embodiment of the present disclosure.

[0063] The description of the electronic device (101) described with reference to FIG. 1 can be substantially equally applied to the wearable device (103) described with reference to FIGS. 2 to 15, to the extent that they are not arranged with each other.

[0064] Referring to FIGS. 2 and 3, a wearable device (103) (e.g., the electronic device (101) of FIG. 1) according to one embodiment of the present disclosure may include a housing (210) or a wearing member (250, 260). The housing (210) may include a first side (or front side) (210A), a second side (or back side) (210B), or a side surface (210C). The side surface (210C) may surround a space between the first side (210A) and the second side (210B).

[0065] According to one embodiment of the present disclosure, in one embodiment, the housing (210) may refer to a structure forming a first side (210A) of FIG. 2, a second side (210B) of FIG. 3, and a portion of the side surfaces (210C). The first side (210A) may be formed by a front plate (201) that is at least partially substantially transparent (e.g., a glass plate including various coating layers, or a polymer plate). The second side (210B) may be formed by a substantially opaque back plate (207). The housing (210) may include the front plate (201), the side bezel structure (206), and / or the back plate (207).

[0066] According to one embodiment of the present disclosure, the rear plate (207) may include an at least partially transparent region. Light may pass through the transparent region from the outside to the inside of the wearable device (103), and light may be emitted from the inside to the outside of the wearable device (103). Accordingly, the transparent region may be referred to as a light-transmitting region.

[0067] According to one embodiment of the present disclosure, the back plate (207) may be formed of, 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 foregoing materials. The side surface (210C) may be formed by a side bezel structure (or “side member”) (206) that is coupled to the front plate (201) and the back plate (207) and comprises a metal and / or polymer. In one embodiment, the back plate (207) and the side bezel structure (206) may be formed integrally and comprise the same material (e.g., a metal material such as aluminum).

[0068] According to one embodiment of the present disclosure, the wearable device (103) may include at least one of a display (e.g., a display module (160) of FIG. 1), an audio module (205, 208) (e.g., an audio module (170) of FIG. 1), a sensor module (211) (e.g., a sensor module (176) of FIG. 1), a key input device (202, 203, 204) (e.g., an input module (150) of FIG. 1), or a connector hole (209) (e.g., a connection terminal (178) of FIG. 1). In one embodiment, the wearable device (103) may omit at least one of the components (e.g., a key input device (202, 203, 204), a connector hole (209), or a sensor module (211)) or may additionally include other components.

[0069] According to one embodiment of the present disclosure, the display may be visually exposed, for example, through a significant portion of the front plate (201). The shape of the display may correspond to the shape of the front plate (201), and may have various shapes such as a circle, an oval, or a polygon. The display may be coupled to or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a fingerprint sensor.

[0070] According to one embodiment of the present disclosure, the audio module (205, 208) may include a microphone hole (205) and a speaker hole (208). The microphone hole (205) may have a microphone positioned therein for acquiring external sounds, and in one embodiment, multiple microphones may be positioned therein to detect the direction of sounds. The speaker hole (208) may be used as an external speaker and a receiver for calls. In one embodiment, a speaker may be included without a speaker hole (e.g., a piezo speaker).

[0071] According to one embodiment of the present disclosure, the key input devices (202, 203, 204) may include a wheel key (202) disposed on a first side (210A) of the housing (210) and rotatable in at least one direction, and / or a side key button (203, 204) disposed on a side surface (210C) of the housing (210). The wheel key (202) may have a shape corresponding to the shape of the front plate (201). In one embodiment, the wearable device (103) may not include some or all of the above-mentioned key input devices (202, 203, 204), and the key input devices (202, 203, 204) that are not included may be implemented in another form, such as a soft key on the display. The connector hole (209) may accommodate a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device, and may include another connector hole (not shown) for receiving a connector for transmitting and receiving audio signals with an external electronic device. The wearable device (103) may further include, for example, a connector cover (not shown) that covers at least a portion of the connector hole (209) and blocks the inflow of external foreign substances into the connector hole.

[0072] According to one embodiment of the present disclosure, the wearable device (103) may be configured to be detachably attached to a part of the user's body (e.g., wrist, ankle, etc.) via a wearing member (250, 260). The wearing member (250, 260) may be connected to at least a portion of the housing (210). The wearing member (250, 260) may be formed of various materials and shapes. An integral and multiple unit links may be formed to be movable to each other by a woven material, leather, rubber, urethane, metal, ceramic, or a combination of at least two of the above materials.

[0073] According to one embodiment of the present disclosure, the wearing member (250, 260) can be detachably fastened to at least a portion of the housing (210) using a locking member (251, 261). The locking member (251, 261) can include a fastening component such as a pogo pin, and can be replaced with a protrusion(s) or recess(es) formed in the wearing member (250, 260) according to an embodiment. For example, the wearing member (250, 260) can be coupled in a manner of engaging with the grooves or protrusions formed in the housing (210). The wearing member (250, 260) can 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).

[0074] According to one embodiment of the present disclosure, the fixing member (252) may be configured to fix the housing (210) and the wearing member (250, 260) to a part of the user's body (e.g., wrist, ankle, etc.). The fixing member fastening hole (253) may correspond to the fixing member (252) to fix the housing (210) and the wearing member (250, 260) to a part of the user's body. The band guide member (254) may be configured to limit the range of motion of the fixing member (252) when the fixing member (252) is fastened to the fixing member fastening hole (253), thereby allowing the wearing member (250, 260) to be fastened in close contact with a part of the user's body. The band fixing ring (255) may limit the range of motion of the wearing member (250, 260) when the fixing member (252) and the fixing member fastening hole (253) are fastened.

[0075] According to one embodiment of the present disclosure, the sensor module (211, 300) can measure the user's biometric information through the light-transmitting area (207t, see FIG. 7) of the rear plate (207) facing the user's body. The sensor module (211, 300) may include, for example, a biometric sensor module (211, 300) disposed on the second surface (210B) of the housing (210). The sensor module (211, 300) will be described in detail below with reference to FIGS. 4 to 15.

[0076] FIG. 4 illustrates an example of a wearable device (103) according to one embodiment of the present disclosure being worn on a user's wrist.

[0077] Referring to FIG. 4, a wearable device (103) according to one embodiment of the present disclosure may be worn on a part of a user's body (e.g., a wrist). The wearable device (103) may be worn on the user's body such that the back plate (207, see FIG. 3) faces the user's skin and the front plate (201) faces the outside of the user's body. Data measured (or sensed) by the wearable device (103) may be displayed through the display to provide information to the user. In addition, a sensor module (211, 300, see FIG. 3) disposed on the back plate (207) may irradiate light to the user's skin through the back plate (207) and detect reflected light of the irradiated light or light generated by the irradiated light (e.g., light absorbed and emitted by skin proteins), thereby measuring the user's biometric information.

[0078] FIG. 5 is a cross-sectional view of a user's skin, which is composed of an epidermal layer (E) and a dermal layer (T), to explain the skin fluorescence measurement principle of a wearable device (103) according to one embodiment of the present disclosure. Excess glucose or fructose in the body can combine with dermal layer proteins (P1, P2, P3) of the dermal layer (T) to form advanced glycated end products (AGEs), which can accumulate in the dermal layer proteins (P1, P2, P3). As an example, the dermal layer proteins (P1, P2, P3) can include hyaluronic acid (P1), collagen (P2), elastin (P3), etc.

[0079] Referring to FIG. 5, according to one embodiment of the present disclosure, light (UV) irradiated toward the user's skin from the sensor module (300) can reach the epidermal layer (E) and the dermal layer (T) of the skin. As an example, the irradiated light (UV) irradiated toward the user's skin may be ultraviolet rays. A portion of the irradiated light (UV) may be absorbed by the dermal layer proteins (P1, P2, P3) to which the final short-circuit oxidases located in the dermal layer (T) are bound, and may be emitted outside the skin in the form of fluorescence. Since the energy of the irradiated light (UV) is absorbed by the dermal layer proteins (P1, P2, P3), the wavelength of the emitted light (EL) may be longer than the wavelength of the irradiated light (UV). The emitted light (EL) emitted in the form of fluorescence from the dermal layer proteins (P1, P2, P3) may be detected by the sensor module (300).

[0080] According to one embodiment of the present disclosure, the wearable device (103) can calculate the amount of dermal layer proteins (P1, P2, P3) in which the advanced glycation end products are accumulated based on the wavelength of the irradiated light (UV) irradiated toward the user's skin, the wavelength of the emitted light (EL), and the amount (illuminance) of the emitted light (EL). Accordingly, the amount of the advanced glycation end products in the body can be measured. The measurement of the advanced glycation end products described with reference to FIG. 5 can be understood as an example to which the skin fluorescence measurement method of the wearable device (103) according to one embodiment of the present disclosure is applied.

[0081] FIG. 6 illustrates light-emitting elements (321, 322) and light-receiving elements (311, 312) of a sensor module (300) according to one embodiment of the present disclosure.

[0082] Referring to FIG. 6, a wearable device (103) according to one embodiment of the present disclosure may include a board (330) disposed inside a housing (210). The board (330) may include, for example, a plate on which light-emitting elements (321, 322, 323) and / or light-receiving elements (311, 312) are disposed, or a printed circuit board on which light-emitting elements (321, 322, 323) and / or light-receiving elements (311, 312) are mounted using SMT (Surface Mounted Technology). The board (330) may also be referred to as a plate or a printed circuit board.

[0083] According to one embodiment of the present disclosure, the board (330) may include one side (331) directed toward the light-transmitting area (207t) of the housing (210, see FIG. 2). As an example, the one side (331) of the board (330) may face the light-transmitting area (207t) formed on the rear plate (207). The board (330) may have a shape corresponding to the light-transmitting area (207t) of the housing (210). As an example, when viewed from the outside of the light-transmitting area (207t), the board (330) and the light-transmitting area (207t) may at least partially overlap.

[0084] According to one embodiment of the present disclosure, a wearable device (103) may include a photodetector (310) configured to detect light reflected or emitted from a user's skin. The photodetector (310) may include a first photodetector (Photo Detector) 311. The first photodetector (311) may be disposed on one surface (331) of a board (330). The first photodetector (311) may be configured to detect (or receive) light in a band of a first wavelength or higher. As an example, the first photodetector (311) may detect light in a band of 430 nm or higher. As an example, the first photodetector (311) may include a photodiode.

[0085] According to one embodiment of the present disclosure, the first light-receiving element (311) may be configured in plurality. As an example, the plurality of first light-receiving elements (311) may be arranged on one side (331) of the board (330) along an edge of the one side (331) of the board (330). As another example, the plurality of first light-receiving elements (311) may be arranged on one side (331) of the board (330) along an edge of the light-transmitting area (207t).

[0086] According to one embodiment of the present disclosure, the light receiving module (310) may include a second light receiving element (312). The second light receiving element (312) may be disposed on one surface (331) of the board (330). The second light receiving element (312) may be spaced apart from the first light receiving element (311). The second light receiving element (312) may be configured to detect (or receive) light in a band of a second wavelength or longer than the first wavelength. As an example, the second light receiving element (312) may include a photodiode (Photo Diode) that is equipped with a filter that passes light of a specific wavelength or longer (e.g., 500 nm or longer), thereby being capable of measuring the amount of light corresponding to the wavelength of the emitted light (EL, see FIG. 5).

[0087] According to one embodiment of the present disclosure, the second light-receiving elements (312) may be configured in plurality. As an example, the plurality of second light-receiving elements (312) may be arranged on one side (331) of the board (330) along an edge of the one side (331) of the board (330). As another example, the plurality of second light-receiving elements (312) may be arranged on one side (331) of the board (330) along an edge of the light-transmitting area (207t).

[0088] According to one embodiment of the present disclosure, a wearable device (103) may include a first light-emitting element (321, Light Emitter). As an example, the first light-emitting element (321) may include an LED. The first light-emitting element (321) may be configured to irradiate light of a third wavelength toward a light-transmitting region (207t). As an example, the first light-emitting element (321) may irradiate blue light. The third wavelength band used by the first light-emitting element (321) may be included in a wavelength band between 430 nm and 480 nm.

[0089] According to one embodiment of the present disclosure, the first light-emitting element (321) may be disposed on one surface (331) of the board (330). The first light-emitting element (321) may be spaced apart from the first light-receiving element (311) and the second light-receiving element (312). The first light-emitting element (321) may be positioned between the first light-receiving element (311) and the second light-receiving element (312).

[0090] According to one embodiment of the present disclosure, the first light-emitting element (321) may be configured in plurality. As an example, the plurality of first light-emitting elements (321) may be arranged on one side (331) of the board (330) along an edge of the one side (331) of the board (330). As another example, the plurality of first light-emitting elements (321) may be arranged on one side (331) of the board (330) along an edge of a light-transmitting area (207t).

[0091] According to one embodiment of the present disclosure, a wearable device (103) may include a second light-emitting element (322). As an example, the second light-emitting element (322) may include an LED. The second light-emitting element (322) may be configured to irradiate light of a fourth wavelength shorter than the third wavelength toward the light-transmitting region (207t). As an example, the first light-emitting element (321) may irradiate blue light, and the second light-emitting element (322) may irradiate ultraviolet light.

[0092] According to one embodiment of the present disclosure, the first light-emitting element (321) and the second light-emitting element (322) may be referred to as a first light-emitting module (320). When the second light-emitting element (322) is operated, the first light-emitting element (321) may also be operated simultaneously. Accordingly, by irradiating light through the second light-emitting element (322) together with the first light-emitting element (321), the signal value acquired through the light-receiving elements (311, 312) can be corrected.

[0093] According to one embodiment of the present disclosure, the second light-emitting element (322) may be arranged on one surface (331) of the board (330). The second light-emitting element (322) may be spaced apart from the first light-receiving element (311) and the second light-receiving element (312). The second light-emitting element (322) may be positioned between the second light-receiving element (312) and the first light-emitting element (321). As an example, the first light-receiving element (311), the first light-emitting element (321), the second light-emitting element (322), and the second light-receiving element (312) may be sequentially arranged along an edge of one surface of the board (330).

[0094] According to one embodiment of the present disclosure, the second light-emitting elements (322) may be configured in plurality. As an example, the plurality of second light-emitting elements (322) may be arranged on one side (331) of the board (330) along an edge of the one side (331) of the board (330). As another example, the plurality of second light-emitting elements (322) may be arranged on one side (331) of the board (330) along an edge of the light-transmitting area (207t).

[0095] According to one embodiment of the present disclosure, a wearable device (103) may include a second light-emitting module (323) configured to irradiate light of a fifth wavelength longer than a third wavelength toward a light-transmitting region (207t). The second light-emitting module (323) may include a plurality of third light-emitting elements (323a, 323b, 323c). The second light-emitting module (323) may be disposed on one surface (331) of a board (330).

[0096] According to one embodiment of the present disclosure, a plurality of third light-emitting elements (323a, 3223b, 323c) may be configured to irradiate light of a third wavelength or higher. The plurality of third light-emitting elements (323a, 3223b, 323c) may include an IR light-emitting element (323a) configured to irradiate infrared light. The fourth wavelength band used by the IR light-emitting element (323a) may be included in a wavelength band of 780 nm or higher. The plurality of third light-emitting elements (323a, 3223b, 323c) may include a red light-emitting element (323b) configured to irradiate red light. The wavelength band used by the red light-emitting element (323b) may be included in a wavelength band between 645 nm and 700 nm. The plurality of third light-emitting elements (323a, 323b, 323c) may include a green light-emitting element (323c) configured to emit green light. The wavelength band used by the green light-emitting element (323c) may be included in a wavelength band between 490 nm and 530 nm. As an example, the second light-emitting module (323) may include at least one of an IR light-emitting element (323a), a red light-emitting element (323b), and a green light-emitting element (323c).

[0097] According to one embodiment of the present disclosure, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged around the second light-emitting module (323) so as to at least partially surround the second light-emitting module (323). As an example, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged at a radial position of the second light-emitting module (323).

[0098] According to one embodiment of the present disclosure, the wearable device (103) may include a first partition wall (350). The first partition wall (350) may protrude from one side (331) of the board (330) toward the light transmitting area (207t). The first partition wall (350) may surround the second light emitting module (323). The first partition wall (350) may be disposed between the third light emitting elements (323a, 3223b, 323c) and the first light receiving element (311). The first partition wall (350) may be disposed between the third light emitting elements (323a, 3223b, 323c) and the second light receiving element (312). The first partition wall (350) may be placed between the third light-emitting element (323a, 3223b, 323c) and the first light-emitting element (321). The first partition wall (350) may be placed between the third light-emitting element (323a, 3223b, 323c) and the second light-emitting element (322).

[0099] According to one embodiment of the present disclosure, the wearable device (103) may include a second partition wall (341, 342). The second partition wall (341, 342) may protrude from one side (331) of the board (330) toward the light transmitting area (207t). The second partition wall (341, 342) may include a first portion (341) and a second portion (342).

[0100] According to one embodiment of the present disclosure, the first portion (341) of the second partition wall (341, 342) can surround the first partition wall (350). The second portion (342) of the second partition wall (341, 342) can at least partially surround the first light-emitting module (320). As an example, the first portion (341) and the second portion (342) of the second partition wall (341, 342) can together surround the first light-emitting module (320).

[0101] According to one embodiment of the present disclosure, the first part (341) of the second partition wall (341, 342) may be disposed between the third light-emitting element (323a, 3223b, 323c) and the first light-receiving element (311). The first part (341) of the second partition wall (341, 342) may be disposed between the third light-emitting element (323a, 3223b, 323c) and the second light-receiving element (312).

[0102] According to one embodiment of the present disclosure, the second part (342) of the second partition wall (341, 342) may be disposed between the first light-receiving element (311) and the first light-emitting element (321). The second part (342) of the second partition wall (341, 342) may be disposed between the second light-receiving element (312) and the second light-emitting element (322).

[0103] FIG. 7 is a cross-sectional view of a portion of a wearable device (103) and a sensor module (300) according to one embodiment of the present disclosure.

[0104] Referring to FIGS. 6 and 7, according to one embodiment of the present disclosure, the light-transmitting area (207t) of the rear plate (207) may include a serration pattern (S). The light emitted from the light-emitting elements (321, 322) may easily reach a body part of the user due to the serration pattern (S). The light from outside the wearable device (103) may easily reach the light-receiving elements (311, 312) through the light-transmitting area (207t) due to the serration pattern (S). The partition walls (341, 342, 350) may protrude from one surface of the board (330) toward the light-transmitting area (207t). The other surface (332) of the board (330) may be directed toward the interior of the wearable device (103).

[0105] FIG. 8 illustrates the distance between light-emitting elements (321, 322) and light-receiving elements (311, 312) of a sensor module (300) according to one embodiment of the present disclosure.

[0106] Referring to FIG. 8, according to one embodiment of the present disclosure, the second light-emitting module (323) may be positioned on the inner side of the board (330). The first light-emitting element (321), the second light-emitting element (322), and / or the light-receiving elements (311, 312) may be positioned on the outer side (e.g., edge) of the board (330). As an example, the second light-emitting module (323) may be positioned at the center of one side (331) of the board (330) and may be surrounded by a plurality of light-emitting elements (321, 322) and a plurality of light-receiving elements (311, 312).

[0107] Accordingly, the first light emitting module (320) configured to irradiate light of a relatively small wavelength (e.g., blue light, ultraviolet light) is positioned closer to the light receiving element (311, 312) than the second light emitting module (323) configured to irradiate light of a relatively long wavelength (e.g., green light, red light, infrared light), so that light of a relatively small wavelength can be more effectively detected by the light receiving element (311, 312).

[0108] According to one embodiment of the present disclosure, the distance (d1) between the light-receiving portion (311s) of the first light-receiving element (311) and the light source of the first light-emitting element (321) may be shorter than the distance (l2) between the light-receiving portion (311s) of the first light-receiving element (311) and the light source of the third light-emitting element (323a, 323b, 323c). As an example, the light-receiving portion (311s) of the first light-receiving element (311) may be a photosensitive layer of a photodiode.

[0109] According to one embodiment of the present disclosure, the distance (d2) between the light-receiving portion (312s) of the second light-receiving element (312) and the light source of the second light-emitting element (322) may be shorter than the distance (l1) between the light-receiving portion (312s) of the second light-receiving element (312) and the light source of the third light-emitting element (323a, 3223b, 323c). As an example, the light-receiving portion (312s) of the second light-receiving element (312) may be a photosensitive layer of a photodiode.

[0110] According to one embodiment of the present disclosure, when viewed from above on one side (331) of the board (330), the distance (d2, d4) between the light source of the second light-emitting element (322) and the light-receiving portion (312s) of the second light-receiving element (312) may be 3 mm to 4 mm. More specifically, it may be 3 mm to 3.5 mm.

[0111] According to one embodiment of the present disclosure, when viewed from above on one side (331) of the board (330), the distance (d1, d3) between the light source of the first light-emitting element (321) and the light-receiving portion (311s) of the first light-receiving element (311) may be 3 mm to 4 mm. More specifically, it may be 3 mm to 3.5 mm.

[0112] FIG. 9 illustrates a plurality of light-emitting modules (1321, 1322, 1323, 1324, 1325) and light-receiving elements (311, 312) according to one embodiment of the present disclosure.

[0113] The description of the components described with reference to FIGS. 6 to 8 (e.g., the first light-emitting module (320), the second light-emitting module (323)) can be substantially identically applied to the components of the same name described with reference to FIG. 9 (e.g., the light-emitting modules (1321, 1322, 1323, 1324, 1325)) to the extent that they are not arranged with each other.

[0114] Referring to FIG. 9, a wearable device (103) according to one embodiment of the present disclosure may include a plurality of light-emitting modules (1321, 1322, 1323, 1324, 1325). Each light-emitting module (1321, 1322, 1323, 1324, 1325) may correspond to the first light-emitting module (320) or the second light-emitting module (323) described with reference to FIG. 6.

[0115] According to one embodiment of the present disclosure, the wearable device (103) may include a plurality of second light-emitting modules (323), unlike that illustrated in FIG. 6. As an example, the plurality of second light-emitting modules (323) may be arranged at positions corresponding to some of the light-emitting modules (1322, 1324, 1325) among the light-emitting modules (1321, 1322, 1323, 1324, 1325) illustrated in FIG. 9, and the plurality of first light-emitting modules (320) may be arranged at positions corresponding to the remaining light-emitting modules (1321, 1323).

[0116] FIG. 10 illustrates first light-emitting modules (320) and light-receiving elements (1311, 1312) according to one embodiment of the present disclosure.

[0117] Referring to FIG. 10, a wearable device (103) according to an embodiment of the present disclosure may include a third light-receiving element (1311). The description regarding the first light-receiving element (311) described with reference to FIG. 6 may be substantially identically applied to the third light-receiving element (1311) to the extent that they are not mutually disposed. The third light-receiving element (1311) may be disposed on the inner side of one surface (331) of the board (330). As an example, the third light-receiving element (1311) may be disposed at the center of one surface (331) of the board (330) surrounded by the first light-receiving elements (311) and the second light-receiving elements (312).

[0118] According to one embodiment of the present disclosure, a wearable device (103) may include a fourth light-receiving element (1312). The description regarding the second light-receiving element (312) described with reference to FIG. 6 may be substantially identically applied to the fourth light-receiving element (1312) to the extent that they are not mutually disposed. The fourth light-receiving element (1312) may be disposed on the inner side of one surface (331) of the board (330). As an example, the fourth light-receiving element (1312) may be disposed at the center of one surface (331) of the board (330) surrounded by the first light-receiving elements (311) and the second light-receiving elements (312).

[0119] According to one embodiment of the present disclosure, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged around the third light-receiving element (1311) and the fourth light-receiving element (1312) so as to at least partially surround the third light-receiving element (1311) and the fourth light-receiving element (1312). As an example, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged at radial positions of the third light-receiving element (1311) and the fourth light-receiving element (1312).

[0120] According to one embodiment of the present disclosure, the wearable device (103) may include a third light-receiving element (1311) configured to detect light of the first wavelength or greater. The wearable device (103) may include a fourth light-receiving element (1312) configured to detect light of the second wavelength or greater. The third light-receiving element (1311) and the fourth light-receiving element (1312) may detect light emitted from the user's skin.

[0121] According to one embodiment of the present disclosure, when viewed from above on one side (331) of the board (330), the fourth light-receiving element (1312) may be arranged closer to the second light-emitting element (322) than to the first light-emitting element (321). As an example, when viewed from above on one side (331) of the board (330), the distance (d5) between the light source of the second light-emitting element (322) and the light-receiving portion (1312s) of the fourth light-receiving element (1312) may be smaller than the distance (d6) between the light source of the second light-emitting element (322) and the light-receiving portion (1311s) of the third light-receiving element (1311).

[0122] According to one embodiment of the present disclosure, when viewed from above on one side (331) of the board (330), the fourth light-receiving element (1312) may be arranged closer to the second light-receiving element (312) than to the first light-receiving element (311). As an example, the distance (d7) between the light-receiving portion (1312s) of the fourth light-receiving element (1312) and the light-receiving portion (312s) of the second light-receiving element (312) may be smaller than the distance (d8) between the light-receiving portion (1312s) of the fourth light-receiving element (1312) and the light-receiving portion (311s) of the first light-receiving element (311).

[0123] According to one embodiment of the present disclosure, a wearable device (103) may include a partition structure (1341, 1342, 1343, 1344). The partition structure (1341, 1342, 1343, 1344) may surround a second light-emitting module (320). As an example, a plurality of partition structures (1341, 1342, 1343, 1344) may be configured, and may surround each of a plurality of second light-emitting modules (320).

[0124] FIG. 11 illustrates light-emitting elements (321, 322) and light-receiving elements (311, 312) according to one embodiment of the present disclosure.

[0125] Referring to FIG. 11, a first partition wall (350) may be arranged between the light-emitting elements (321, 322) and the light-receiving elements (311, 312). As an example, the first partition wall (350) may surround a plurality of light-emitting elements (321, 322), and the plurality of light-receiving elements (311, 312) may surround the first partition wall (350).

[0126] According to one embodiment of the present disclosure, the order in which the light-emitting elements (321, 322) are arranged along the longitudinal direction of the first partition wall (350) may be the same as the order in which the light-receiving elements (311, 312) are arranged along the longitudinal direction of the first partition wall (350). As an example, the light-emitting elements (321, 322) may be arranged in the order of the first light-emitting element (321) and the second light-emitting element (322) along the longitudinal direction of the first partition wall (350), and the light-receiving elements (311, 312) may be arranged in the order of the first light-receiving element (311) and the second light-receiving element (312) along the longitudinal direction of the first partition wall (350).

[0127] According to one embodiment of the present disclosure, the first light-receiving element (311) may be spaced apart from the first light-emitting element (321) toward the edge of the board (330). For example, the first light-receiving element (311) may be spaced apart from the first light-emitting element (321) in the radial direction of the board (330). The second light-receiving element (312) may be spaced apart from the second light-emitting element (322) toward the edge of the board (330). For example, the second light-receiving element (312) may be spaced apart from the second light-emitting element (322) in the radial direction of the board (330).

[0128] According to one embodiment of the present disclosure, the first light-receiving elements (311) and the second light-receiving elements (312) can be arranged around the first light-emitting element (321) and the second light-emitting element (322) so as to at least partially surround the first light-emitting element (321) and the second light-emitting element (322). As an example, the first light-receiving elements (311) and the second light-receiving elements (312) can be arranged at radial positions of the first light-emitting element (321) and the second light-emitting element (322).

[0129] FIG. 12 illustrates light emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) and light receiving elements (311, 312) according to one embodiment of the present disclosure.

[0130] The description of the light emitting modules (320, 323) described with reference to FIGS. 6 to 8 can be substantially identically applied to the light emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) of the same name described with reference to FIG. 12, to the extent that they are not arranged with each other.

[0131] Referring to FIG. 12, a wearable device (103) according to one embodiment of the present disclosure may include a plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328). Each light-emitting module (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) may correspond to the first light-emitting module (320) or the second light-emitting module (323) described with reference to FIG. 6.

[0132] According to one embodiment of the present disclosure, a plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) may surround light-receiving elements (311, 312). The light-receiving elements (311, 312) may correspond to the first light-receiving element (311) and the second light-receiving element (312) described with reference to FIG. 6. Light irradiated from the plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) may correspond to the first light-receiving element (311) and the second light-receiving element (312).

[0133] According to one embodiment of the present disclosure, a plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) can be arranged around the light-receiving elements (311, 312) so as to at least partially surround the light-receiving elements (311, 312). As an example, the plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328) can be arranged at radial positions of the light-receiving elements (311, 312).

[0134] According to one embodiment of the present disclosure, a wearable device (103) may include a first partition wall (350) disposed between light-receiving elements (311, 312) and a plurality of light-emitting modules (2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328). The first partition wall (350) may surround the light-receiving elements (311, 312).

[0135] FIG. 13 is a block diagram of a portion of a wearable device (103) according to one embodiment of the present disclosure.

[0136] Referring to FIG. 13, a wearable device (103) according to one embodiment of the present disclosure may include a processor (120), a memory (130), a display device (160) (e.g., the display module (160) of FIG. 1), a sensor module (300) (e.g., the sensor module (176) of FIG. 1 or the sensor module (211) of FIG. 2), and a communication module (190). The processor (120), the memory (130), the display device (160), the sensor module (300), and the communication module (190) may be operatively coupled by an electrical interface, such as a communication bus (not shown), for example. The communication module (190) may perform at least one of transmitting or receiving a wired signal or a wireless signal including information related to a user's blood sugar level. Each of the light emitting elements (321, 322, 323) and the light receiving elements (311, 312) can be controlled by the processor (120).

[0137] According to one embodiment of the present disclosure, the display device (160) can provide a visual UI (User Interface) to the user by being controlled by the processor (120). For example, the display device (160) can include a display at least a portion of which is visible to the outside through the housing of the electronic device (101). The display can visually output information to the user using at least one of an Organic Light Emitting Diode (OLED), a Liquid Crystal Display (LCD), or a Light Emitting Diode (LED). The UI output through the display can include the amount of final glycation end-product in the body or the user's bio-information (e.g., physical age) based thereon (see FIG. 4).

[0138] FIG. 14 is a flowchart of a skin fluorescence measurement method of a wearable device (103) according to one embodiment of the present disclosure. The skin fluorescence measurement method illustrated in FIG. 14 can be performed using the wearable device (103) described in FIGS. 6 to 12.

[0139] Referring to FIGS. 13 and 14, according to one embodiment of the present disclosure, a wearable device (103) may include a light-emitting module (320, 323) configured to irradiate light onto a user's skin, and a light-receiving module (310, see FIG. 6) configured to detect light emitted from the user's skin. The light-emitting module (320, 323) may include a first light-emitting module (320) and a second light-emitting module (323) described with reference to FIG. 6. The light-receiving module (310) may include a first light-receiving element (311) and a second light-receiving element (312) described with reference to FIG. 6.

[0140] A method for measuring skin fluorescence of a wearable device (103) according to one embodiment of the present disclosure may include a step (S1) of irradiating at least one of red light, blue light, and green light onto the user's skin through a light-emitting module (320, 323) and acquiring a skin color characteristic signal value through a light-receiving module (310).

[0141] According to one embodiment of the present disclosure, in the skin color characteristic signal value acquisition step (S1), the blue light-emitting element (321) of the first light-emitting module (320), the red light-emitting element (323b) of the second light-emitting module (323), and the green light-emitting element (323c) can be sequentially operated in any order to irradiate light toward the user's skin. As an example, the blue light-emitting element (321), the green light-emitting element (323c), and the red light-emitting element (323b) can sequentially irradiate light, and the light emitted from the user's skin at each step can be detected through the light-receiving module (310).

[0142] According to one embodiment of the present disclosure, the light receiving module (310) can acquire a signal value corresponding to the detected emitted light. As an example, the first light receiving element (311) and / or the second light receiving element (312) can acquire a signal value corresponding to the intensity of the detected emitted light, and the processor (120) can compare the signal value with a value stored in the memory (130) to determine the skin color of a body part of the user (e.g., wrist).

[0143] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include, as a step performed prior to a step of acquiring a skin color characteristic signal value (S1), a step of sequentially operating a plurality of ultraviolet emitting modules (320) to irradiate ultraviolet rays to the user's skin, and acquiring a signal value corresponding to each of the light emitting modules (320) through a light receiving module (310). As an example, ultraviolet emitting elements (322) included in the light emitting modules (320) may be sequentially operated to irradiate ultraviolet rays to the user's skin, and light emitted from the user's skin may be detected through the light receiving module (310), thereby acquiring a signal value corresponding to each of the ultraviolet emitting elements (322).

[0144] According to one embodiment of the present disclosure, the processor (120) may determine whether the wearable device (103) is worn based on signal values ​​corresponding to each ultraviolet emitting element (322). As an example, the processor (120) may determine that the wearable device (103) is worn correctly if the differences between the signal values ​​corresponding to each ultraviolet emitting element (322) and the reference values ​​stored in the memory (130) are less than or equal to a reference deviation. In addition, the processor (120) may determine that the wearable device (103) is not worn correctly if at least one of the differences between the signal values ​​corresponding to each ultraviolet emitting element (322) and the reference values ​​stored in the memory (130) is greater than the reference deviation.

[0145] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include a step of notifying whether the device is worn or not performed in between. If at least one of the differences between the signal values ​​corresponding to each ultraviolet emitting element (322) and the reference value stored in the memory (130) is greater than the reference deviation, wearable device wearing information may be provided to the user. The device wearing information may include information for conveying that the wearable device (103) is not properly worn on a body part of the user. As an example, the display device (160) may include the display, and the UI displayed on the display may include the wearable device wearing information. As another example, the wearable device wearing information may be audibly conveyed to the user through an audio output module of the wearable device (103) (e.g., the audio output module (155) of FIG. 1). As another example, the wearable device wearing information can be tactilely transmitted to the user through a haptic module of the wearable device (103) (e.g., the haptic module (179) of FIG. 1).

[0146] A method for measuring skin fluorescence of a wearable device (103) according to one embodiment of the present disclosure may include a step (S2) of irradiating infrared rays to the user's skin through light-emitting modules (320, 323) and acquiring a skin thickness signal value through a light-receiving module (310). In the skin thickness signal value acquisition step (S2), infrared rays are irradiated toward the user's skin through the light-emitting module (323), and light emitted from the user's skin can be detected by the light-receiving module (310).

[0147] According to one embodiment of the present disclosure, the light receiving module (310) can acquire a signal value corresponding to the detected emitted light. As an example, the first light receiving element (311) and / or the second light receiving element (312) can acquire a signal value corresponding to the intensity of the detected emitted light, and the processor (120) can compare the signal value with a value stored in the memory (130) to determine the thickness of the epidermal layer (E) of a body part of the user (e.g., wrist).

[0148] According to one embodiment of the present disclosure, in the skin thickness characteristic signal value acquisition step (S2), the luminance of infrared rays irradiated through the light-emitting module (323) may correspond to the acquired skin color characteristic signal value. As an example, if the skin color of the body part of the user is determined to be a first skin color, infrared rays having a luminance corresponding to the first skin color may be irradiated in the skin thickness characteristic signal value acquisition step (S2). As another example, if the skin color of the body part of the user is determined to be a second skin color darker than the first skin color, infrared rays having a luminance brighter than the luminance corresponding to the first skin color may be irradiated in the skin thickness characteristic signal value acquisition step (S2).

[0149] A method for measuring skin fluorescence of a wearable device (103) according to one embodiment of the present disclosure may include a step (S3) of setting the illuminance of ultraviolet light irradiated through a light-emitting module (320) based on the acquired skin color characteristic signal value and the acquired skin thickness signal value.

[0150] According to one embodiment of the present disclosure, the intensity of ultraviolet light set in the ultraviolet light intensity setting step (S3) may be set differently depending on the skin color of the user. For example, if the skin color of the body part is determined to be the first skin color, the intensity of ultraviolet light corresponding to the first skin color may be set in the ultraviolet light intensity setting step (S3). As another example, if the skin color of the body part of the user is determined to be the second skin color that is darker than the first skin color, the intensity of light higher than the intensity corresponding to the first skin color may be set in the ultraviolet light intensity setting step (S3).

[0151] According to one embodiment of the present disclosure, the intensity of ultraviolet light set in the ultraviolet light intensity setting step (S3) may be set differently depending on the thickness of the user's epidermis. For example, if the epidermis thickness of a body part is greater than a pre-stored thickness value, the intensity of ultraviolet light may be set higher compared to a case where the epidermis thickness of the body part is less than the pre-stored thickness value. As another example, if the epidermis thickness of the body part is less than the pre-stored thickness value, the intensity of ultraviolet light may be set lower compared to a case where the epidermis thickness of the body part is greater than the pre-stored thickness value.

[0152] A method for measuring skin fluorescence of a wearable device (103) according to one embodiment of the present disclosure may include a step (S4) of irradiating ultraviolet rays of the set intensity to the user's skin through a light-emitting module (320) and acquiring a skin fluorescence signal value through a light-receiving module (310). In the skin fluorescence signal value acquisition step (S4), ultraviolet rays are irradiated to the user's skin through the light-emitting module (320), and light emitted from the user's skin can be detected by the light-receiving module (310).

[0153] Referring to FIG. 5, according to one embodiment of the present disclosure, ultraviolet (UV) rays irradiated to the user's skin through the light-emitting module (320) may reach the dermal layer (T) of the user's skin, be absorbed by dermal layer proteins (P1, P2, P3) to which advanced glycation end products (AGEs) are bound, and the dermal layer proteins (P1, P2, P3) may emit emission light (EL) in the form of fluorescence. As an example, the wavelength of the ultraviolet (UV) rays irradiated from the light-emitting module (320) may be about 365 nm, and the wavelength of the emission light (EL) emitted from the dermal layer proteins (P1, P2, P3) may have a wavelength in the 500 nm band.

[0154] According to one embodiment of the present disclosure, emitted light (EL) can be detected through a light receiving module (310). The light receiving module (310) can acquire a signal value corresponding to the intensity of the emitted light (EL). For example, the first light receiving element (311) and / or the second light receiving element (312) can acquire a signal value corresponding to the intensity of the detected emitted light (EL), and the processor (120) can compare the signal value with a skin fluorescence value stored in a memory (130) to determine a skin fluorescence value of a body part of the user (e.g., a wrist). For example, the skin fluorescence value can include the amount of advanced glycation end products (AGEs) in the body.

[0155] According to one embodiment of the present disclosure, the skin fluorescence measurement method of a wearable device (103) may further include a skin fluorescence information output step (S5). The skin fluorescence information may include the amount of final glycation end-product in the body or information that can be estimated therefrom (e.g., the user's physical age).

[0156] According to one embodiment of the present disclosure, the skin fluorescence information may be visually transmitted to the user through a display device (160). As an example, the display device (160) may include the display, and a UI displayed on the display may include the skin fluorescence information. As another example, the skin fluorescence information may be audibly transmitted to the user through an audio output module of the wearable device (103) (e.g., the audio output module (155) of FIG. 1). As another example, the skin fluorescence information may be tactilely transmitted to the user through a haptic module of the wearable device (103) (e.g., the haptic module (179) of FIG. 1).

[0157] FIG. 15 is a flowchart of a skin fluorescence signal value acquisition step (S4) according to one embodiment of the present disclosure.

[0158] Referring to FIG. 15, according to one embodiment of the present disclosure, a light emitting module (320, 323) may include a plurality of first light emitting modules (320) including an ultraviolet light emitting element (322). As an example, the plurality of first light emitting modules (320) may be arranged on one surface (331) of a board (330) as illustrated in FIG. 6.

[0159] According to one embodiment of the present disclosure, the skin fluorescence signal value acquisition step (S4) may include a step (S40) of sequentially operating a plurality of first light-emitting modules (320) to irradiate ultraviolet rays to the user's skin and acquire a signal value corresponding to each first light-emitting module (320) through a light-receiving module (311, 312).

[0160] According to one embodiment of the present disclosure, the step (S40) of acquiring a signal value corresponding to each first light-emitting module (320) may include steps (S41, S42, S43, S44) of sequentially irradiating ultraviolet rays through a plurality of ultraviolet light-emitting elements (322) included in each of the plurality of first light-emitting modules (320) and acquiring a skin fluorescence signal value through a light-receiving module (310, see FIG. 6). As an example, the plurality of ultraviolet light-emitting elements (322) may correspond to the second light-emitting elements (322) illustrated in FIG. 6, and for the convenience of description with reference to FIG. 15, the plurality of ultraviolet light-emitting elements (322) may be referred to as first ultraviolet light-emitting elements to fourth ultraviolet light-emitting elements.

[0161] According to one embodiment of the present disclosure, the step (S40) of acquiring a signal value corresponding to each first light-emitting module (320) may be performed in the following order: a step (S41) of acquiring a skin fluorescence signal of a first ultraviolet emitting element (322), a step (S42) of acquiring a skin fluorescence signal of a second ultraviolet emitting element (322), a step (S43) of acquiring a skin fluorescence signal of a third ultraviolet emitting element (322), and a step (S44) of acquiring a skin fluorescence signal of a fourth ultraviolet emitting element (322).

[0162] According to one embodiment of the present disclosure, in the steps (S41, S42, S43, S44) of acquiring skin fluorescence signals of the first to fourth ultraviolet emitting elements (322), the light-receiving module (310) can detect the light emission (EL, see FIG. 5) emitted from the user's skin. The light-receiving module (310) can acquire a signal value corresponding to the intensity of the light emission (EL). As an example, the first light-receiving element (311) and / or the second light-receiving element (312) can acquire a signal value corresponding to the intensity of the detected light emission (EL), and the processor (120) can compare the signal value with a skin fluorescence value stored in the memory (130) to determine the skin fluorescence value of a body part of the user (e.g., wrist). As an example, the skin fluorescence value can include the amount of advanced glycation end products (AGEs) in the body.

[0163] According to one embodiment of the present disclosure, the skin fluorescence signal value acquisition step (S4) may include a step (S45) of comparing signal values ​​corresponding to each of the first light-emitting modules (320) with a preset value to determine at least one optimal first light-emitting module (320) among the plurality of first light-emitting modules (320).

[0164] According to one embodiment of the present disclosure, in the step (S45) of determining the optimal first light-emitting module (320), the processor (120) may determine the ultraviolet light-emitting element (322) having the highest value among the skin fluorescence signal values ​​acquired in the steps (S41, S42, S43, S44) of acquiring the skin fluorescence signals of the first to fourth ultraviolet light-emitting elements (322) as the optimal ultraviolet light-emitting element (322). In addition, the first light-emitting module (320) including the optimal ultraviolet light-emitting element (322) may be determined as the optimal first light-emitting module (320). The ultraviolet light-emitting element (322) having the highest skin fluorescence signal value may be understood as the ultraviolet light-emitting element that is easiest to measure the fluorescence level of the user's skin (e.g., the amount of advanced glycation end-product in the body).

[0165] According to one embodiment of the present disclosure, the step (S4) of acquiring a skin fluorescence signal value may include a step (S46) of acquiring a skin fluorescence signal value of the optimal ultraviolet emitting element. In the step (S46) of acquiring a skin fluorescence signal value of the optimal ultraviolet emitting element, ultraviolet light directed toward the user's skin may be irradiated through the optimal ultraviolet emitting element, and the emitted light (EL, see FIG. 5) emitted from the user's skin may be detected through the light receiving module (310). The first light receiving element (311) and / or the second light receiving element (312) may acquire a signal value corresponding to the intensity of the detected emitted light (EL), and the processor (120) may compare the signal value with a skin fluorescence value stored in the memory (130) to determine a skin fluorescence value of a body part (e.g., wrist) of the user.

[0166] According to one embodiment of the present disclosure, the step (S46) of acquiring a skin fluorescence signal value of an optimal ultraviolet emitting element may be omitted. The processor (120) may determine the highest value among the skin fluorescence signal values ​​acquired in the steps (S41, S42, S43, S44) of acquiring a skin fluorescence signal of the first to fourth ultraviolet emitting elements (322) as the skin fluorescence value of a body part of the user (e.g., wrist).

[0167] Wearable devices are devices worn on a part of the user's body (e.g., wrist, ankle, etc.) to detect biometric information through the user's skin or effectively transmit information to the user. However, wearable devices often struggle to remain securely attached to the user's body due to physical activity. Therefore, extensive research is being conducted to improve biometric information measurement using wearable devices.

[0168] A problem to be solved in the present disclosure may be to improve the performance of measuring user biometric information (e.g., amount of advanced glycation end products (AGEs)) of a wearable device.

[0169] A problem to be solved in the present disclosure may be to effectively place a plurality of components (e.g., light-emitting elements, light-receiving elements) for detecting biometric information in a wearable device.

[0170] The problems to be addressed in this disclosure are not limited to the problems mentioned above, and may be determined in various ways without departing from the spirit and scope of this disclosure.

[0171] An electronic device according to various embodiments of the present disclosure can improve the biometric information measurement performance of a wearable device by arranging a short-wavelength light-emitting element closer to a light-receiving element than a long-wavelength light-emitting element.

[0172] Electronic devices according to various embodiments of the present disclosure can effectively arrange components in a wearable device by closely arranging a plurality of light-emitting elements that irradiate light of different wavelengths and a plurality of light-receiving elements that detect light of different wavelength ranges.

[0173] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the above description.

[0174] According to one embodiment of the present disclosure, a wearable device (103) may include a housing (210) including a light transmitting area (207t).

[0175] According to one embodiment of the present disclosure, a wearable device (103) may include a board (330) disposed inside the housing (210) and including one side (331) directed toward the light transmitting area (207t).

[0176] According to one embodiment of the present disclosure, a wearable device (103) may include a first photodetector (Photo Detector, 311) disposed on the one surface (331) of the board (330) and configured to detect light of a first wavelength or greater.

[0177] According to one embodiment of the present disclosure, a wearable device (103) may include a second light-receiving element (312) disposed on the one side (331) of the board (330) and spaced apart from the first light-receiving element (311).

[0178] According to one embodiment of the present disclosure, the second light receiving element (312) may be configured to detect light having a second wavelength or longer than the first wavelength.

[0179] According to one embodiment of the present disclosure, a wearable device (103) may include a first light emitter (321) positioned between the first light receiving element (311) and the second light receiving element (312) and configured to irradiate light of a third wavelength toward the light transmitting area (207t).

[0180] According to one embodiment of the present disclosure, a wearable device (103) may include a second light-emitting element (322) positioned between the first light-emitting element (321) and the second light-receiving element (312), and configured to irradiate light of a fourth wavelength shorter than the third wavelength toward the light-transmitting region (207t).

[0181] According to one embodiment of the present disclosure, a wearable device (103) may include a light emitting module (323) configured to irradiate light of a fifth wavelength longer than the third wavelength toward the light transmitting region (207t).

[0182] According to one embodiment of the present disclosure, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged around the light-emitting module (323) so as to at least partially surround the light-emitting module (323).

[0183] According to one embodiment of the present disclosure, the light emitting module (323) may include at least one of an IR light emitting element (323a) configured to irradiate infrared light, a red light emitting element (323b) configured to irradiate red light, and a green light emitting element (323c) configured to irradiate green light.

[0184] According to one embodiment of the present disclosure, a wearable device (103) may include a partition (341, 350) surrounding the light-emitting module (323) and protruding from the one side (331) of the board (330) toward the light-transmitting area (207t).

[0185] According to one embodiment of the present disclosure, the first light-receiving element (311), the first light-emitting element (321), the second light-emitting element (322), and the second light-receiving element (312) may be sequentially arranged along the edge of the light-transmitting area (207t).

[0186] According to one embodiment of the present disclosure, a wearable device (103) may include a partition (342) disposed between the second light-receiving element (312) and the second light-emitting element (322) and protruding from the one surface (331) of the board (330) toward the light-transmitting area (207t).

[0187] According to one embodiment of the present disclosure, the first light-emitting element (321) may be configured to irradiate blue light, and the second light-emitting element (322) may be configured to irradiate ultraviolet light.

[0188] According to one embodiment of the present disclosure, the wearable device (103) may include a third light-emitting element (323a, 3223b, 323c) configured to irradiate light of the third wavelength or higher toward the light-transmitting region (207t).

[0189] According to one embodiment of the present disclosure, a partition wall (341) may be disposed between the third light-emitting element (323a, 3223b, 323c) and the first light-receiving element (311), and protruding from the one surface (331) of the board (330) toward the light-transmitting area (207t).

[0190] According to one embodiment of the present disclosure, the distance between the light-receiving portion (311s) of the first light-receiving element (311) and the light source of the third light-emitting element (323a, 3223b, 323c) may be longer than the distance between the light-receiving portion (312s) of the second light-receiving element (312) and the light source of the second light-emitting element (322).

[0191] According to one embodiment of the present disclosure, when viewed from above the one side (331) of the board (330), the distance (d2) between the light source of the second light-emitting element (322) and the light-receiving portion (312s) of the second light-receiving element (312) may be 3 mm to 4 mm.

[0192] According to one embodiment of the present disclosure, when viewed from above the one side (331) of the board (330), the distance (d1) between the light source of the first light-emitting element (321) and the light-receiving portion (311s) of the first light-receiving element (311) may be 3 mm to 4 mm.

[0193] According to one embodiment of the present disclosure, the second light-emitting element (322) may include a plurality of second light-emitting elements (322) arranged along the edge of the light-transmitting area (207t).

[0194] According to one embodiment of the present disclosure, the board (330) may further include a light receiving module (1311, 1312) arranged on the one side (331) and configured to detect light of a predetermined wavelength band.

[0195] According to one embodiment of the present disclosure, the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) can be arranged around the light-receiving module (1311, 1312) so as to at least partially surround the light-receiving module (1311, 1312).

[0196] According to one embodiment of the present disclosure, the light receiving module (1311, 1312) may include a third light receiving element (1311) configured to detect light of the first wavelength or greater.

[0197] According to one embodiment of the present disclosure, the light receiving module (1311, 1312) may include a fourth light receiving element (1312) configured to detect light of the second wavelength or higher.

[0198] According to one embodiment of the present disclosure, when viewed from above the one side (331) of the board (330), the fourth light-receiving element (1312) may be arranged closer to the second light-emitting element (322) than to the first light-emitting element (321).

[0199] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include a step (S1) of irradiating at least one of red light, blue light, and green light to the user's skin through the light-emitting module (320, 323) and acquiring a skin color characteristic signal value through the light-receiving module (310).

[0200] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include a step (S2) of irradiating infrared rays to the user's skin through the light-emitting module (320, 323) and acquiring a skin thickness signal value through the light-receiving module (310).

[0201] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include a step (S3) of setting the illuminance of ultraviolet rays irradiated through the light-emitting module (320, 323) based on the acquired skin color characteristic signal value and the acquired skin thickness signal value.

[0202] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include a step (S4) of irradiating ultraviolet rays of the set intensity to the user's skin through the light-emitting module (320) and acquiring a skin fluorescence signal value through the light-receiving module (310).

[0203] According to one embodiment of the present disclosure, the light emitting module (320, 323) may include a plurality of first light emitting modules (320) including ultraviolet light emitting elements (322).

[0204] According to one embodiment of the present disclosure, in the step (S4) of acquiring the skin fluorescence signal value, ultraviolet light may be irradiated through an optimal first light emitting module (320) among the plurality of first light emitting modules (320).

[0205] According to one embodiment of the present disclosure, the step (S4) of acquiring the skin fluorescence signal value may include steps (S41, S42, S43, S44) of sequentially operating the plurality of first light-emitting modules (320) to irradiate ultraviolet rays to the user's skin, and acquiring a signal value corresponding to each first light-emitting module (320) through the light-receiving module (310).

[0206] According to one embodiment of the present disclosure, the step (S4) of acquiring the skin fluorescence signal value may include a step (S45) of comparing the signal values ​​corresponding to each of the first light-emitting modules (320) with a preset value to determine the optimal first light-emitting module (320) among the plurality of first light-emitting modules (320).

[0207] According to one embodiment of the present disclosure, in the step (S2) of acquiring the skin thickness characteristic signal value according to the skin fluorescence measurement method of the wearable device (103), the illuminance of the infrared ray irradiated through the light-emitting module (323) can be set based on the acquired skin color characteristic signal value.

[0208] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include, as a step performed prior to the step (S1) of acquiring the skin color characteristic signal value, a step of sequentially operating the plurality of first light-emitting modules (320) to irradiate ultraviolet rays to the user's skin, and acquiring a signal value corresponding to each first light-emitting module (320) through the light-receiving module (310).

[0209] According to one embodiment of the present disclosure, a method for measuring skin fluorescence of a wearable device (103) may include, as a step performed prior to the step (S1) of acquiring the skin color characteristic signal value, a step of outputting wearable device wearing information visually or audibly through the wearable device (103) when a difference between signal values ​​corresponding to each of the first light-emitting modules (320) and a previously stored reference value is greater than a reference deviation.

[0210] While the present disclosure has been shown and described with reference to various embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

Claims

1. In a wearable device (103), A housing (210) including a light transmitting area (207t); A board (330) disposed inside the housing (210) and including one side (331) directed toward the light transmitting area (207t); A first photodetector (311) arranged on the one side (331) of the board (330) and configured to detect light of a first wavelength or greater; A second light-receiving element (312) arranged on the one side (331) of the board (330), spaced apart from the first light-receiving element (311), and configured to detect light of a second wavelength or longer than the first wavelength; A first light-emitting element (light emitter, 321) positioned between the first light-receiving element (311) and the second light-receiving element (312) and configured to irradiate light of a third wavelength toward the light-transmitting area (207t); and A wearable device including a second light-emitting element (322) positioned between the first light-emitting element (321) and the second light-receiving element (312) and configured to irradiate light of a fourth wavelength shorter than the third wavelength toward the light-transmitting area (207t).

2. In paragraph 1, It further includes a light emitting module (323) configured to irradiate light of a fifth wavelength longer than the third wavelength toward the light transmitting area (207t). A wearable device in which the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) are arranged around the light-emitting module (323) so as to at least partially surround the light-emitting module (323).

3. In paragraph 1 or 2, The above light emitting module (323): A wearable device comprising at least one of an IR light-emitting element (323a) configured to irradiate infrared light, a red light-emitting element (323b) configured to irradiate red light, and a green light-emitting element (323c) configured to irradiate green light.

4. In any one of paragraphs 1 to 3, A wearable device comprising a partition wall (341, 350) surrounding the light-emitting module (323) and protruding from the one side (331) of the board (330) toward the light-transmitting area (207t).

5. In any one of paragraphs 1 to 4, A wearable device in which the first light-receiving element (311), the first light-emitting element (321), the second light-emitting element (322), and the second light-receiving element (312) are sequentially arranged along the edge of the light-transmitting area (207t).

6. In any one of paragraphs 1 to 5, A wearable device comprising a partition wall (342) disposed between the second light-receiving element (312) and the second light-emitting element (322) and protruding from the one surface (331) of the board (330) toward the light-transmitting area (207t).

7. In any one of paragraphs 1 to 6, A wearable device in which the first light-emitting element (321) is configured to irradiate blue light, and the second light-emitting element (322) is configured to irradiate ultraviolet light.

8. In any one of paragraphs 1 to 7, A wearable device further comprising a third light-emitting element (323a, 3223b, 323c) configured to irradiate light of the third wavelength or higher toward the light-transmitting region (207t).

9. In any one of paragraphs 1 to 8, A wearable device comprising a partition wall (341) disposed between the third light-emitting element (323a, 3223b, 323c) and the first light-receiving element (311) and protruding from the one surface (331) of the board (330) toward the light-transmitting area (207t).

10. In any one of paragraphs 1 to 9, A wearable device in which the distance (l1) between the light-receiving portion (312s) of the second light-receiving element (312) and the light source of the third light-emitting element (323a, 3223b, 323c) is longer than the distance (d2) between the light-receiving portion (312s) of the second light-receiving element (312) and the light source of the second light-emitting element (322).

11. In any one of paragraphs 1 to 10, A wearable device in which, when viewed from above the one side (331) of the board (330), the distance (d2) between the light source of the second light-emitting element (322) and the light-receiving portion (312s) of the second light-receiving element (312) is 3 mm to 4 mm.

12. In any one of paragraphs 1 to 11, A wearable device in which, when viewed from above the one side (331) of the board (330), the distance (d1) between the light source of the first light-emitting element (321) and the light-receiving portion (311s) of the first light-receiving element (311) is 3 mm to 4 mm.

13. In any one of paragraphs 1 to 12, The above second light emitting element (322) is A wearable device comprising a plurality of second light-emitting elements (322) arranged along the edge of the light-transmitting area (207t).

14. In any one of paragraphs 1 to 13, A third light-receiving element (1311) arranged on the one side (331) of the board (330) and configured to detect light of the first wavelength or higher; and A fourth light-receiving element (1312) is disposed on the one side (331) of the board (330) and configured to detect light of the second wavelength or higher, A wearable device in which the first light-receiving element (311), the second light-receiving element (312), the first light-emitting element (321), and the second light-emitting element (322) are arranged around the third light-receiving element (1311) and the fourth light-receiving element (1312) so as to at least partially surround the third light-receiving element (1311) and the fourth light-receiving element (1312).

15. In any one of paragraphs 1 to 14, A wearable device in which, when viewed from above the one side (331) of the board (330), the fourth light-receiving element (1312) is positioned closer to the second light-emitting element (322) than to the first light-emitting element (321).

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