Blood glucose measurement device using photonics module

Abstract

According to one embodiment of the present disclosure, an electronic device may comprise: a substrate; a plurality of light sources disposed on the substrate and radiating light of different wavelengths; a temperature sensor disposed close to the plurality of light sources; a wavelength detection circuit electrically connected to at least two light sources among the plurality of light sources; a memory storing instructions; and a processor. The instructions, when executed by the processor, may cause the electronic device to acquire temperature information related to the plurality of light sources by using the temperature sensor. The instructions, when executed by the processor, may cause the electronic device to measure the amount of change in wavelength between the plurality of light sources by using the wavelength detection circuit. The instructions, when executed by the processor, may cause the electronic device to adjust the amount of change in wavelength to be less than or equal to a reference amount of change in wavelength when the amount of change in wavelength according to the acquired temperature information exceeds the reference amount of change in wavelength. The instructions, when executed by the processor, may cause the electronic device to supply a current corresponding to the adjusted amount of change in wavelength to the plurality of light sources. In addition to various embodiments disclosed in the present document, other various embodiments may be possible.

Description

Blood glucose measurement device using a photonics module

[0001] Embodiments of the present disclosure relate to an electronic device, a method, and a non-transitory computer-readable storage medium for measuring blood sugar using a photonics module.

[0002] Recently, electronic devices are being equipped with various sensors capable of measuring a user's biometric information. For example, one of these sensors may include an optical sensor comprising at least one light-emitting element and a light-receiving element. The optical sensor can measure a user's biometric information using light of a specific wavelength. An example of a user's biometric information may include blood glucose information. Methods for measuring blood glucose levels may include invasive and non-invasive methods. For example, an invasive method may involve drawing blood from the body and measuring the glucose content in the blood. Invasive methods, which require collecting blood using a lancet, can be painful for the user and inconvenient to carry and store. Non-invasive methods do not require blood collection, thus eliminating the need for a lancet, making blood glucose measurement relatively simple and quick.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0004] Because noninvasive methods measure blood sugar without using blood draws, blood sugar measurement data may not be accurate.

[0005] An electronic device according to an embodiment of the present disclosure may include at least one light-emitting structure including a plurality of light sources that emit light of different wavelengths. The electronic device may obtain temperature information of the plurality of light sources using a temperature sensor and measure a wavelength variation of the plurality of light sources using a wavelength detection circuit. If the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation, the electronic device may adjust the wavelength variation to be less than or equal to the reference wavelength variation.

[0006] According to one embodiment of the present disclosure, an electronic device may include a substrate, a plurality of light sources disposed on the substrate and emitting light of different wavelengths, a temperature sensor disposed proximate to the plurality of light sources, a wavelength detection circuit electrically connected to at least two of the plurality of light sources, a memory storing instructions, and a processor. The instructions, when executed by the processor, may cause the electronic device to obtain temperature information related to the plurality of light sources using the temperature sensor. The instructions, when executed by the processor, may cause the electronic device to measure a wavelength variation between the plurality of light sources using the wavelength detection circuit. The instructions, when executed by the processor, may cause the electronic device to adjust the wavelength variation to be less than or equal to the reference wavelength variation when the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation. The above instructions, when executed by the processor, may cause the electronic device to supply current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0007] According to one embodiment of the present disclosure, a blood glucose measurement method may include an operation of obtaining temperature information related to a plurality of light sources emitting light of different wavelengths using a temperature sensor. According to one embodiment, the blood glucose measurement method may include an operation of measuring a wavelength variation between the plurality of light sources using a wavelength detection circuit. According to one embodiment, the blood glucose measurement method may include an operation of adjusting the wavelength variation to be less than or equal to the reference wavelength variation when the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation. According to one embodiment, the blood glucose measurement method may include an operation of supplying a current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0008] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium (or, a computer program product) storing one or more programs may be described. The one or more programs according to one embodiment may include instructions, when executed by a processor of an electronic device, to obtain temperature information associated with a plurality of light sources emitting light of different wavelengths using a temperature sensor. The one or more programs according to one embodiment may include instructions, when executed by the processor of the electronic device, to measure a wavelength variation between the plurality of light sources using a wavelength detection circuit. The one or more programs according to one embodiment may include instructions, when executed by the processor of the electronic device, to adjust the wavelength variation to be less than or equal to the reference wavelength variation if the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation. The one or more programs according to one embodiment may include instructions, when executed by the processor of the electronic device, to supply a current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0009] An electronic device according to one embodiment of the present disclosure may cause a plurality of light sources to sequentially emit light while adjusting the wavelength change amount to be less than or equal to the reference wavelength change amount when the wavelength change amount according to acquired temperature information exceeds the reference wavelength change amount. The electronic device may obtain accurate blood sugar information based on light emitted by the plurality of light sources and reflected by the light irradiation area.

[0010] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0011] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment of the present disclosure.

[0012] FIG. 2 is a block diagram illustrating an electronic device according to one embodiment of the present disclosure.

[0013] FIG. 3 is a flowchart illustrating a method for generating reference data for a user's blood sugar information according to one embodiment of the present disclosure.

[0014] FIG. 4 is a flowchart illustrating a method for generating correction data for correcting a user's blood sugar information according to one embodiment of the present disclosure.

[0015] FIG. 5 is a flowchart illustrating a method for determining current supplied to a plurality of light sources according to one embodiment of the present disclosure.

[0016] FIG. 6 is a flowchart illustrating a method for measuring blood sugar information of a user according to one embodiment of the present disclosure.

[0017] FIG. 7 is a drawing for explaining a light-emitting structure according to one embodiment of the present disclosure.

[0018] FIGS. 8 and 9 are cross-sectional views of a light source and a cross-sectional view of an array of multiple light sources, according to one embodiment of the present disclosure.

[0019] FIG. 10 is a diagram for explaining a method for measuring blood sugar information of a user according to one embodiment of the present disclosure.

[0020] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0021] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure.

[0022] 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). According to 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)).

[0023] 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 calculations. According to one embodiment, as at least a part of the data processing or calculations, 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 a secondary 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 therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0024] 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.

[0025] 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).

[0026] 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).

[0027] 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).

[0028] 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.

[0029] 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. In 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.

[0030] 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).

[0031] 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.

[0032] 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.

[0033] 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).

[0034] A 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. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0035] 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.

[0036] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0037] 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.

[0038] 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 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).

[0039] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as 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 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) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0040] 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 printed circuit board (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 by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. 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).

[0041] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent 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.

[0042] 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)).

[0043] 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, 104, or 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, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. 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.

[0044] FIG. 2 is a block diagram illustrating an electronic device (101) according to one embodiment of the present disclosure.

[0045] Referring to FIG. 2, an electronic device (e.g., electronic device (101) of FIG. 1) may include a communication circuit (210) (e.g., communication module (190) of FIG. 1), a memory (220) (e.g., memory (130) of FIG. 1), a blood glucose sensor (225), and / or a processor (260) (e.g., processor (120) of FIG. 1).

[0046] According to one embodiment of the present disclosure, the electronic device (101) may be a wearable electronic device that can be worn on a part of the user's body (e.g., a wrist or a finger). However, the electronic device (101) is not limited thereto, and may also be a device for measuring the user's blood sugar level.

[0047] According to one embodiment of the present disclosure, a communication circuit (210) (e.g., a communication module (190) of FIG. 1) may control a communication connection between an electronic device (101) and at least one external electronic device (e.g., an electronic device (102) or an electronic device (104) of FIG. 1) (and / or a server (e.g., a server (108) of FIG. 1)) under the control of a processor (260).

[0048] According to one embodiment of the present disclosure, the memory (220) (e.g., the memory (130) of FIG. 1) performs a function of storing a program (e.g., the program (140) of FIG. 1) for processing and controlling the processor (260) of the electronic device (101), an operating system (OS) (e.g., the operating system (142) of FIG. 1), various applications (e.g., the application (146) of FIG. 1), and / or input / output data, and may store a program that controls the overall operation of the electronic device (101). The memory (220) may store various setting information required when processing functions related to various embodiments of the present disclosure in the electronic device (101). The memory (220) may store executable instructions. For example, the memory (220) may store instructions that, when executed by the processor (260), cause the electronic device (101) to perform operations. For example, the instructions may be stored on a computer-readable storage medium (or a computer-readable recording medium). The storage medium may be tangible and non-transitory. The memory (220) and / or the storage medium may store one or more programs including the instructions.

[0049] In one embodiment, the memory (220) may store instructions for obtaining temperature information associated with a plurality of light sources (or an array of a plurality of light sources) using a temperature sensor (230) under the control of the processor (260). The memory (220) may store instructions for measuring a wavelength variation between at least two light sources using a wavelength detection circuit (240) under the control of the processor (260). The memory (220) may store instructions for adjusting, under the control of the processor (260), when the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation, adjusting the current supplied to the plurality of light sources to be less than or equal to a specified current, or adjusting the temperature information associated with the plurality of light sources to be less than or equal to a specified temperature, thereby adjusting the wavelength variation to be less than or equal to the reference wavelength variation. The memory (220) may store instructions for supplying, under the control of the processor (260), a current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0050] In one embodiment, the memory (220) may store instructions for supplying current corresponding to the adjusted wavelength variation to the light emitting unit (235), for example, a plurality of light sources, under the control of the processor (260), so that the plurality of light sources sequentially emit light. The memory (220) may store instructions for detecting, under the control of the processor (260), light emitted through the plurality of light sources and focused on a light focusing element to be emitted to a light irradiation area (e.g., a part of the user's body (e.g., a finger or wrist)), and light emitted through the light focusing element reflected by the light irradiation area and at least some of which is received through the light focusing element. The memory (220) may store instructions for obtaining blood sugar information of the user based on the detected light under the control of the processor (260).

[0051] In one embodiment, the memory (220) may store the user's reference blood sugar level information. The user's reference blood sugar level information may include, for example, the user's blood sugar level information measured using a reference device (e.g., a reference device for measuring blood sugar level) or blood sugar level information corresponding to the user's attribute information (e.g., age, gender, and / or race).

[0052] In one embodiment, the memory (220) may store a first mapping table and a second mapping table. For example, the first mapping table may be a table that maps a user's reference blood sugar information and a response gain at each wavelength corresponding to the user's reference blood sugar information. For example, the second mapping table may be a table that maps current supplied to a plurality of light sources, temperature information related to the plurality of light sources, wavelength variation according to the temperature information, and light quantity output through the plurality of light sources according to the wavelength variation.

[0053] According to one embodiment of the present disclosure, a blood glucose sensor (225) may include a photonic integrated circuit (PIC) (227). The photonic integrated circuit (227) may be provided in the form of an active element and a passive element. The photonic integrated circuit (227) may include various optical circuits in which optical manipulation is performed, and may be placed (or mounted) on a substrate (e.g., a substrate (705) of FIG. 7, a substrate (1000) of FIG. 10).

[0054] In one embodiment, the optical integrated circuit (227) may include a temperature sensor (230), a light emitter (235), a wavelength detection circuit (240), a light detection circuit (245), and / or a monitoring circuit (250).

[0055] According to one embodiment of the present disclosure, the temperature sensor (230) may include a thermistor. In one embodiment, the thermistor may be a sensor that utilizes a change in the resistance of a material depending on temperature. However, the temperature sensor (230) is not limited thereto, and may be configured in various ways, such as a thermocouple, a resistance temperature detector (RTD), and an infrared temperature sensor.

[0056] In one embodiment, a temperature sensor (230) may be positioned proximate to a thermal element (e.g., a light emitter (235) (e.g., a plurality of light sources)). The temperature sensor (230) may acquire (or measure) temperature information associated with the thermal element, e.g., a plurality of light sources (e.g., a light emitter (235)) (or temperature information associated with an array of the plurality of light sources).

[0057] According to one embodiment of the present disclosure, the light emitting unit (235) may include, for example, a plurality of light sources. The plurality of light sources may sequentially emit light under the control of the processor (260). For example, the electronic device (101) may include at least one light emitting structure. Each of the at least one light emitting structure may include a plurality of light sources. In one embodiment, the plurality of light sources may be arranged on a substrate in an array form. Each of the plurality of light sources may be implemented to emit light of a different wavelength. For example, a first light source among the plurality of light sources may be implemented to emit light of a first wavelength (e.g., λ1). A second light source among the plurality of light sources may be implemented to emit light of a second wavelength (e.g., λ2). A third light source among the plurality of light sources may be implemented to emit light of a third wavelength (e.g., λ3). An n-th light source among the plurality of light sources may emit light of an n-th wavelength (e.g., λ n) can be implemented to emit light of a first wavelength (e.g., λ1), a second wavelength (e.g., λ2), a third wavelength (e.g., λ3), ..., and an n-th wavelength (e.g., λ n ) may vary.

[0058] According to one embodiment of the present disclosure, the wavelength detection circuit (240) can measure the wavelength variation of a plurality of light sources based on the phase difference of the array of the plurality of light sources. The wavelength detection circuit (240) can include a Mach-Zehnder interferometer, but is not limited thereto.

[0059] According to one embodiment of the present disclosure, a light detection circuit (245) can detect at least a portion of light emitted from a plurality of light sources and reflected in a light irradiation area. The light detection circuit (245) can include, for example, a light receiving unit (e.g., a photodiode).

[0060] According to one embodiment of the present disclosure, the monitoring circuit (250) can detect (or sense) the amount of light generated from a plurality of light sources. The monitoring circuit (250) can determine the intensity of light emitted to a light irradiation area (e.g., a part of a user's body (e.g., a finger or wrist). The monitoring circuit (250) can determine the amount of current supplied to each of the plurality of light sources.

[0061] According to one embodiment of the present disclosure, the processor (260) may include, for example, a micro controller unit (MCU), and may control a plurality of hardware components connected to the processor (260) by running an operating system (OS) or an embedded software program. The processor (260) may control a plurality of hardware components according to, for example, instructions stored in a memory (220) (e.g., a program (140) of FIG. 1).

[0062] The number of processors (260) according to one embodiment may be one or more. For example, the processor (260) may have a multi-core processor structure such as a dual core, a quad core, or a hexa core.

[0063] In one embodiment, the processor (260) may control operations of the electronic device (101) by executing instructions stored in the memory (220). For example, the processor (260) may correspond to multiple processors that collectively perform multiple operations by dividing them among the processors.

[0064] In one embodiment, the processor (260) may obtain temperature information related to the light emitting unit (235), for example, a plurality of light sources (or an array of a plurality of light sources), using the temperature sensor (230). The processor (260) may measure a wavelength variation between at least two light sources using the wavelength detection circuit (240). If the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation, the processor (260) may adjust the wavelength variation to be less than or equal to the reference wavelength variation. For example, the processor (260) may adjust the current supplied to the plurality of light sources to be less than or equal to a specified current, thereby adjusting the wavelength variation to be less than or equal to the reference wavelength variation. The present invention is not limited thereto, and the processor (260) may adjust the temperature information related to the plurality of light sources to be less than or equal to a specified temperature, thereby adjusting the wavelength variation to be less than or equal to the reference wavelength variation. The processor (260) may supply a current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0065] In one embodiment, the processor (260) may supply current corresponding to the adjusted wavelength variation to the light emitting unit (235), for example, a plurality of light sources, and control the plurality of light sources to sequentially emit light. The processor (260) may detect, through the light detection circuit (245), light emitted from the plurality of light sources and focused on the light focusing element to be emitted to the light irradiation area, and light emitted through the light focusing element reflected by the light irradiation area, and light at least partially received through the light focusing element. For example, the light irradiation area may include a part of the user's body, for example, a finger or a wrist. The processor (260) may obtain blood sugar information of the user based on the light detected through the light detection circuit (245). For example, the processor (260) may measure light reflected by the light irradiation area, and obtain (or measure) blood sugar level (e.g., blood sugar information) based on a spectral variation of the measured light.

[0066] An electronic device (101) according to one embodiment of the present disclosure may include a substrate (705), a plurality of light sources disposed on the substrate (705) and emitting light of different wavelengths, a temperature sensor (230, 740) disposed close to the plurality of light sources, a wavelength detection circuit (240, 755, 760) electrically connected to at least two of the plurality of light sources, a memory (220) storing instructions, and a processor (260). The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to obtain temperature information related to the plurality of light sources using the temperature sensor (230, 740). The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to measure a wavelength variation between a plurality of light sources using the wavelength detection circuit (240, 755, 760). The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to adjust the wavelength variation to be less than or equal to the reference wavelength variation when the wavelength variation according to the acquired temperature information exceeds a reference wavelength variation. The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to supply a current corresponding to the adjusted wavelength variation to the plurality of light sources.

[0067] Instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to adjust the current supplied to the plurality of light sources to be less than or equal to a specified current, thereby adjusting the wavelength variation to be less than or equal to a reference wavelength variation.

[0068] Instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to adjust temperature information associated with a plurality of light sources to be below a specified temperature, thereby adjusting the wavelength variation to be below a reference wavelength variation.

[0069] An electronic device (101) according to one embodiment may include a light focusing element (1030) including a light emitting unit (10301) and a light receiving unit (10302), and a light detection circuit (245, 1060). Instructions according to one embodiment, when executed by a processor (260), may cause the electronic device (101) to supply current corresponding to an adjusted wavelength variation amount to a plurality of light sources, thereby causing the plurality of light sources to sequentially emit light. The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to detect, through the light detection circuit (245, 1060), light emitted from a plurality of light sources and focused on the light focusing element (1030) and emitted to the light irradiation area (1050) through the light emitting portion (10301) of the light focusing element (1030), and light emitted through the light focusing element (1030) and reflected by the light irradiation area (1050) and at least a portion of which is received through the light receiving portion (10302) of the light focusing element (1030). The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to obtain blood sugar information of the user based on the detected light.

[0070] An electronic device (101) according to one embodiment may include a monitoring circuit (250, 750). Instructions according to one embodiment, when executed by a processor (260), may cause the electronic device (101) to detect the amount of light output from each of a plurality of light sources through the monitoring circuit (250, 750).

[0071] Instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to store in the memory (220) a first mapping table in which current supplied to the plurality of light sources, temperature information related to the plurality of light sources, a reference wavelength variation amount of each of the plurality of light sources corresponding to the temperature information, and an amount of light output through each of the plurality of light sources according to the reference wavelength variation amount are mapped.

[0072] Instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to adjust the wavelength change amount to be less than or equal to the reference wavelength change amount if it is determined that the wavelength change amount according to the acquired temperature information, based on the first mapping table, exceeds the reference wavelength change amount.

[0073] A wavelength detection circuit (240, 755, 760) according to one embodiment may include a plurality of wavelength detection circuits. A first wavelength detection circuit (755) among the plurality of wavelength detection circuits according to one embodiment may be electrically (or optically) connected to a first light source forming a minimum wavelength among the plurality of light sources. A second wavelength detection circuit (760) among the plurality of wavelength detection circuits according to one embodiment may be electrically connected to a second light source forming a maximum wavelength among the plurality of light sources.

[0074] The path of light focused by the light focusing element (1030) according to one embodiment and the path of light transmitted to the light detection circuit (245, 1060) through the light focusing element (1030) may be different.

[0075] The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to obtain the user's reference blood glucose information. The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to cause a plurality of light sources to sequentially emit light. The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to obtain a response gain at a wavelength corresponding to each of the plurality of light sources based on light emitted by the plurality of light sources and reflected by the light irradiation area (1050). The instructions according to one embodiment, when executed by the processor (260), may cause the electronic device (101) to store, in the memory (220), a second mapping table that maps the user's reference blood glucose information and the response gain at each wavelength corresponding to the user's reference blood glucose information.

[0076] The plurality of light sources according to one embodiment may include laser diodes. However, this is not limited thereto, and for example, the plurality of light sources may be configured in various ways, such as vertical cavity surface emitting lasers (VCSELs).

[0077] In various embodiments, as illustrated in FIG. 2, the electronic device (101) may include a blood glucose sensor (e.g., the blood glucose sensor (225) of FIG. 2). The blood glucose sensor (225) may include an optical integrated circuit (e.g., the optical integrated circuit (227) of FIG. 2) that generates reference data for the user's blood glucose information, generates correction data for correcting the user's blood glucose information, and includes components for measuring the user's blood glucose information. The optical integrated circuit (227) may include a temperature sensor (e.g., the temperature sensor (230) of FIG. 2), a light emitter (e.g., the light emitter (235) of FIG. 2), a wavelength detection circuit (e.g., the wavelength detection circuit (240) of FIG. 2), a light detection circuit (e.g., the light detection circuit (245) of FIG. 2), and / or a monitoring circuit (e.g., the monitoring circuit (250) of FIG. 2).

[0078] In relation to an embodiment of generating reference data for a user's blood sugar information, generating correction data for correcting the user's blood sugar information, and measuring the user's blood sugar information through an optical integrated circuit (227) according to various embodiments, various embodiments will be described in FIGS. 3 to 10 described below.

[0079] FIG. 3 is a flowchart illustrating a method for generating reference data for a user's blood sugar information according to one embodiment of the present disclosure.

[0080] In the following embodiments, the operations of FIG. 3 may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations of FIG. 3 may be changed, and at least two operations may be performed in parallel.

[0081] According to one embodiment, operations 305 to 320 of FIG. 3 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 and processor (260) of FIG. 2) of an electronic device (e.g., electronic device (101) of FIGS. 1 and 2).

[0082] Referring to FIG. 3, the processor (260) may acquire the user's reference blood sugar level information in operation 305. For example, the user's reference blood sugar level information may be the user's blood sugar level information measured using a reference device (e.g., a reference device for measuring blood sugar level). However, the user's reference blood sugar level information may also be blood sugar level information corresponding to the user's attribute information (e.g., age, gender, and / or race).

[0083] In one embodiment, the user's baseline blood sugar information may be stored in memory (e.g., memory (220) of FIG. 2).

[0084] In one embodiment, the processor (260) can control a plurality of light sources to sequentially emit light in operation 310.

[0085] In one embodiment, the electronic device (101) may include at least one light-emitting structure. Each of the at least one light-emitting structure may include a light-emitting unit (e.g., light-emitting unit (235) of FIG. 2). The light-emitting unit (235) may include a plurality of light sources. In one embodiment, each of the plurality of light sources may be configured as a laser diode. For example, the laser diode may include a distributed feedback (DFB) laser diode. A distributed feedback laser diode according to one embodiment may form light of a single wavelength and may have higher stability and precise frequency characteristics.

[0086] However, this is not limited to this, and multiple light sources may be composed of vertical cavity surface emitting lasers (VCSELs).

[0087] In one embodiment, the light emitting unit (235), for example, a plurality of light sources, may be implemented to sequentially emit light of different wavelengths through different optical paths. For example, a first light source among the plurality of light sources may be implemented to emit light of a first wavelength (e.g., λ1). A second light source among the plurality of light sources may be implemented to emit light of a second wavelength (e.g., λ2). A third light source among the plurality of light sources may be implemented to emit light of a third wavelength (e.g., λ3). An n-th light source among the plurality of light sources may be implemented to emit light of an n-th wavelength (e.g., λ n ) can be implemented to emit light of a first wavelength (e.g., λ1), a second wavelength (e.g., λ2), a third wavelength (e.g., λ3), ..., and an n-th wavelength (e.g., λ n ) may vary.

[0088] In one embodiment, as light (e.g., laser light) having different wavelengths is emitted from each of the plurality of light sources, multiple wavelengths of light (e.g., laser light) having different wavelengths may be emitted into a light irradiation area. In one embodiment, the light irradiation area may include a part of the user's body, such as a finger or wrist.

[0089] In one embodiment, the processor (260) may, in operation 315, determine (or obtain) a response gain at a wavelength corresponding to each of the plurality of light sources based on light emitted from the plurality of light sources and reflected by the light irradiation area. For example, the processor (260) may determine (or obtain) a response gain at a wavelength corresponding to each of the plurality of light sources based on a response characteristic of light reflected by the light irradiation area.

[0090] The response gain at a first wavelength among a plurality of wavelengths corresponding to a plurality of light sources according to one embodiment can be confirmed (or obtained) based on the following <Mathematical Formula 1>.

[0091]

[0092] (Gλ1 : response gain at the first wavelength (e.g., λ1), Ir: amplitude of reflected laser light at the first wavelength (e.g., λ1), Io: reference amplitude of the first light source at the first wavelength (e.g., λ1)

[0093] The above <Mathematical Formula 1> is merely an example to aid understanding, and the embodiments of the present disclosure may not be limited thereto. For example, the above <Mathematical Formula 1> may be modified, applied, or expanded in various ways.

[0094] Based on the above <Mathematical Formula 1>, not only the first wavelength (e.g., λ1), but also the second wavelength (e.g., λ2), the third wavelength (e.g., λ3), ..., the nth wavelength (e.g., λ n ) can be used to confirm (or obtain) the response gain.

[0095] In one embodiment, the processor (260) may, in operation 320, map the user's reference blood sugar information and the response gain at each wavelength corresponding to the user's reference blood sugar information, and store the mapping table in the memory (220).

[0096] A mapping table related to blood sugar information and wavelength-specific response gain according to one embodiment may be as shown in Table 1 below. The values ​​disclosed in Table 1 below are only an example and are not limited to the values ​​disclosed in Table 1.

[0097] Blood glucose information wavelength λ1 response gain wavelength λ4 response gain 81-85304086-90405091-95506096-1006070

[0098] The mapping table according to above can be used as an index for blood sugar measurement. For example, the mapping table according to can be reference data formed by matching the response gain at a specific wavelength with blood sugar information through a comparison of the user's reference blood sugar information and the response gain of light reflected from the light irradiation area. In other words, the mapping table according to can indicate a correlation between the user's reference blood sugar information and the response gain at a specific wavelength. For example, based on the above , if there is a large variation in the response gain at a specific wavelength, it can be interpreted that a variation in moisture or body fluid within the skin tissue is caused by the blood sugar information.

[0099] As disclosed in the above , when blood sugar is high, body fluid or moisture in the blood vessel area may penetrate into the blood vessel, which may increase the absorption of light at a specific wavelength. Accordingly, the amplitude of light scattered or reflected at the blood vessel area may decrease. According to <Mathematical Formula 1>, the response gain may increase as the blood sugar level increases, and wavelengths that do not respond to changes in blood sugar may maintain a constant response gain. Through the above process, wavelengths that are sensitive to changes in blood sugar can be identified, and the response gains of wavelengths for each blood sugar level information can be mapped and stored in the memory (220) as a mapping table as in .

[0100] FIG. 4 is a flowchart illustrating a method for generating correction data for correcting a user's blood sugar information according to one embodiment of the present disclosure.

[0101] In the following embodiments, the operations of FIG. 4 may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations of FIG. 4 may be changed, and at least two operations may be performed in parallel.

[0102] According to one embodiment, operations 405 to 420 of FIG. 4 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 and processor (260) of FIG. 2) of an electronic device (e.g., electronic device (101) of FIG. 1 and electronic device (101) of FIG. 2).

[0103] The operations of FIG. 4 according to various embodiments may be performed before or after operation 305 of FIG. 3 described above or after operation 320. However, this is not limited thereto, and the operations of FIG. 4 may also be performed before operation 605 of FIG. 6 described below.

[0104] Referring to FIG. 4, the processor (260) can control a plurality of light sources to sequentially emit light in operation 405.

[0105] In one embodiment, the electronic device (101) may include at least one light-emitting structure. Each of the at least one light-emitting structure may include a light-emitting unit (e.g., light-emitting unit 235 of FIG. 2). The light-emitting unit (235) may include a plurality of light sources. In one embodiment, the plurality of light sources may be arranged on a substrate in an array form. Each of the plurality of light sources may be implemented to emit light of a different wavelength. For example, a first light source among the plurality of light sources may be implemented to emit light of a first wavelength (e.g., λ1). A second light source among the plurality of light sources may be implemented to emit light of a second wavelength (e.g., λ2). A third light source among the plurality of light sources may be implemented to emit light of a third wavelength (e.g., λ3). An n-th light source among the plurality of light sources may be implemented to emit light of an n-th wavelength (e.g., λ n ) can be implemented to emit light of a first wavelength (e.g., λ1), a second wavelength (e.g., λ2), a third wavelength (e.g., λ3), ..., and an n-th wavelength (e.g., λ n ) may vary.

[0106] In one embodiment, the processor (260) may measure a wavelength change amount based on current supplied to the plurality of light sources and temperature information related to the plurality of light sources when the plurality of light sources sequentially emit light in operation 410.

[0107] In one embodiment, after the light-emitting structure is manufactured, the processor (260) can operate each light source to emit light, thereby measuring the wavelength change based on temperature information and current when each light source emits light. The processor (260) can measure the light output at the time when each light source emits light.

[0108] In one embodiment, the processor (260) may obtain temperature information associated with a plurality of light sources (or an array of a plurality of light sources) using a temperature sensor (e.g., temperature sensor (230) of FIG. 2).

[0109] In one embodiment, the processor (260) may measure the amount of wavelength change of light generated from each light source using a wavelength detection circuit (e.g., the wavelength detection circuit (240) of FIG. 2). For example, the wavelength detection circuit (240) may measure the amount of wavelength change according to the ambient temperature and power consumption when each light source emits light. When each light source emits light, the amount of wavelength change in one light source may be similar to the amount of wavelength change in at least one other neighboring light source. Considering this, the wavelength detection circuit (240) may measure the amount of wavelength change in a first light source among the plurality of light sources. The present invention is not limited thereto, and the wavelength detection circuit (240) may measure the amount of wavelength change in the first light source and the n-th light source among the plurality of light sources, and based on the measured amount of wavelength change in the remaining light sources. In this case, the wavelength detection circuit (240) may be electrically connected to at least two light sources (e.g., the first light source and the n-th light source) among the plurality of light sources.

[0110] In one embodiment, the processor (260) may detect the amount of light output from multiple light sources through a monitoring circuit (e.g., the monitoring circuit (250) of FIG. 2) in operation 415.

[0111] In one embodiment, light emitted from each of the plurality of light sources can be focused into a single optical path by an optical waveguide, and the focused light can be received by the monitoring circuit (250). Since the absolute amount of light is important in the operation of checking blood sugar, the monitoring circuit (250) can determine the intensity of light emitted to the user's skin and determine the current supplied to each light source. The monitoring circuit (250) can detect (or sense) the amount of light generated from the plurality of light sources through the optical sensing path.

[0112] In one embodiment, the processor (260) may map current supplied to a plurality of light sources, temperature information related to the plurality of light sources, wavelength change amount according to the temperature information, and light amount output through the plurality of light sources according to the wavelength change amount, and store the mapping table in a memory (e.g., memory (220) of FIG. 2) in operation 420.

[0113] A mapping table in which current supplied to a plurality of light sources according to one embodiment, temperature information related to the plurality of light sources, wavelength change amount according to the temperature information, and light amount output through the plurality of light sources according to the wavelength change amount are mapped may be as shown in Table 2 below.

[0114] Supply current thermistor temperature wavelength change light amount I1T1△λ1AI2T2△λ2BI3T3△λ3C

[0115] In one embodiment, the processor (260) can derive a correlation between the current supplied to the plurality of light sources and the amount of wavelength change in the plurality of light sources based on . For example, when the current supplied to the plurality of light sources increases, it can be confirmed that the amount of light and the amount of wavelength change increase. For another example, when the current supplied to the plurality of light sources remains constant, it can be confirmed that the amount of light decreases.

[0116] In one embodiment, since it is possible to derive a correlation between the current supplied to a plurality of light sources and the amount of wavelength change in the plurality of light sources, the processor (260) can accurately derive the amount of light and the amount of wavelength change actually output when measuring the user's blood sugar. For example, in the above , the amount of wavelength change (e.g., the reference amount of wavelength change) may change according to temperature information measured according to the change in the current supplied to the plurality of light sources. Considering this, the processor (260) can set the current supplied to a specific value as a reference value and predict the actual amount of wavelength change in each light source.

[0117] In one embodiment, when measuring blood sugar, since light output is also an important factor, the processor (260) can periodically check the amount of light detected through the monitoring circuit (250) and adjust the current (or power) supplied to the array of multiple light sources.

[0118] FIG. 5 is a flowchart illustrating a method for determining current supplied to a plurality of light sources according to one embodiment of the present disclosure.

[0119] In the following embodiments, the operations of FIG. 5 may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations of FIG. 5 may be changed, and at least two operations may be performed in parallel.

[0120] According to one embodiment, operations 505 to 520 of FIG. 5 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 and processor (260) of FIG. 2) of an electronic device (e.g., electronic device (101) of FIG. 1 and electronic device (101) of FIG. 2).

[0121] Referring to FIG. 5, in operation 505, the processor (260) can obtain temperature information related to a plurality of light sources (or an array of a plurality of light sources) using a temperature sensor (e.g., the temperature sensor (230) of FIG. 2).

[0122] In one embodiment, the processor (260) may, in operation 510, measure a wavelength variation between at least two light sources using a wavelength detection circuit (e.g., wavelength detection circuit (240) of FIG. 2).

[0123] In one embodiment, the processor (260) may adjust the wavelength change amount to be less than or equal to the reference wavelength change amount when the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount in operation 515.

[0124] In one embodiment, the reference wavelength change amount according to temperature information can be confirmed based on . The wavelength change amount can be confirmed through the wavelength detection circuit (240) according to the temperature information acquired through the temperature sensor (230), and when the confirmed wavelength change amount exceeds the wavelength change amount (e.g., the reference wavelength change amount) according to , the processor (260) can adjust the current supplied to the array of the plurality of light sources so that the wavelength change amount becomes less than or equal to the reference wavelength change amount. For example, the processor (260) can adjust the current supplied to the plurality of light sources so that it becomes less than or equal to a specified current, thereby adjusting the wavelength change amount to become less than or equal to the reference wavelength change amount. The present invention is not limited thereto, and the processor (260) can adjust the temperature information related to the plurality of light sources so that it becomes less than or equal to a specified temperature, thereby adjusting the wavelength change amount to become less than or equal to the reference wavelength change amount.

[0125] In one embodiment, the processor (260) may supply current corresponding to the adjusted wavelength variation to a plurality of light sources in operation 520. Thereafter, the processor (260) may perform the operation of FIG. 6 described below.

[0126] Although not shown in FIG. 5 according to one embodiment, if the wavelength change amount according to the acquired temperature information does not exceed the reference wavelength change amount, the processor (260) may supply current corresponding to the measured wavelength change amount to a plurality of light sources and perform the operation of FIG. 6 described below.

[0127] FIG. 6 is a flowchart illustrating a method for measuring blood sugar information of a user according to one embodiment of the present disclosure.

[0128] In the following embodiments, the operations of FIG. 6 may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations of FIG. 6 may be changed, and at least two operations may be performed in parallel.

[0129] According to one embodiment, operations 605 to 615 of FIG. 6 may be understood to be performed in a processor (e.g., processor (120) of FIG. 1 and processor (260) of FIG. 2) of an electronic device (e.g., electronic device (101) of FIG. 1 and electronic device (101) of FIG. 2).

[0130] Referring to FIG. 6, the processor (260) can control a plurality of light sources (e.g., the light emitting unit (235) of FIG. 2) to sequentially emit light in operation 605. For example, the plurality of light sources can be controlled to sequentially emit light by supplying current corresponding to the adjusted wavelength change amount to the plurality of light sources. The present invention is not limited thereto, and as described in FIG. 5, when it is confirmed that the wavelength change amount according to the acquired temperature information does not exceed the reference wavelength change amount, the plurality of light sources can be controlled to sequentially emit light by supplying current corresponding to the measured wavelength change amount to the plurality of light sources.

[0131] In one embodiment, the plurality of light sources may be implemented to emit light of different wavelengths. For example, a first light source among the plurality of light sources may be implemented to emit light of a first wavelength (e.g., λ1). A second light source among the plurality of light sources may be implemented to emit light of a second wavelength (e.g., λ2). A third light source among the plurality of light sources may be implemented to emit light of a third wavelength (e.g., λ3). An n-th light source among the plurality of light sources may be implemented to emit light of an n-th wavelength (e.g., λ n ) can be implemented to emit light of a first wavelength (e.g., λ1), a second wavelength (e.g., λ2), a third wavelength (e.g., λ3), ..., and an n-th wavelength (e.g., λ n ) may vary.

[0132] In one embodiment, the processor (260) may, in operation 610, cause light emitted from a plurality of light sources and focused on a light focusing element to be emitted to a light irradiation area, and the light emitted through the light focusing element may be reflected by the light irradiation area, and the light received through the light focusing element may be detected through a light detection circuit (e.g., a light detection circuit (245) of FIG. 2).

[0133] In one embodiment, light (e.g., laser light) emitted from multiple light sources having different wavelengths may be emitted into a light irradiation area. For example, the light irradiation area may include a part of the user's body, such as a finger or wrist.

[0134] In one embodiment, the processor (260) can measure at least a portion of the light reflected from the light irradiation area via the light detection circuit (425). In one embodiment, light radiated to the light irradiation area, for example, the user's finger or wrist, can react with (e.g., be absorbed by) blood sugar in the skin of the finger or wrist and then be reflected. The processor (260) can convert the light reflected from the light irradiation area into a photoelectric signal via the light detection circuit (245) and perform filtering to pass only signals of a specific frequency band. In other words, the light source and the light detection circuit (245) can be modulated to substantially the same frequency so that only signals of substantially the same frequency band can be detected.

[0135] In one embodiment, the processor (260) may obtain the user's blood sugar information based on the light detected by the light detection circuit (245) in operation 615. For example, the processor (260) may measure the light (e.g., filtered light) reflected by the light irradiation area, and may obtain (or measure) the blood sugar level (e.g., blood sugar information) based on the spectral change of the measured light. For example, the processor (260) may compare the response characteristics of the light reflected by the light irradiation area with the mapping table according to . The processor (260) may obtain (e.g., non-invasively obtain) the user's blood sugar information by comparing the response characteristics of the light reflected by the light irradiation area with the response characteristics of the mapping table according to .

[0136] FIG. 7 is a drawing for explaining a light-emitting structure (700) according to one embodiment of the present disclosure.

[0137] Referring to FIG. 7, a light-emitting structure (700) has a substrate (705), an array (710) of a plurality of light sources (711, 712, 713, ..., 71n), a temperature sensor (740) (e.g., the temperature sensor (230) of FIG. 2), a first wiring (770) (e.g., a cathode wiring), a second wiring (7301, 7302, 7303, ..., 730n) (e.g., an anode wiring), a monitoring circuit (750) (e.g., the monitoring circuit (250) of FIG. 2), and / or a wavelength detection circuit (750, 760) (e.g., the wavelength detection circuit (240) of FIG. 2).

[0138] In one embodiment, a substrate (705) may be arranged with an array (710) of a plurality of light sources (711, 712, 713, ..., 71n), a temperature sensor (740), a first wiring (770) (e.g., a cathode wiring), a second wiring (7301, 7302, 7303, ..., 730n) (e.g., an anode wiring), a monitoring circuit (750), and / or a wavelength detection circuit (755, 760).

[0139] In one embodiment, the substrate (705) may include a photonic integrated circuit (PIC) based on a silicon (Si) substrate. The photonic integrated circuit may be provided in the form of active components and / or passive components. The photonic integrated circuit, which is a variety of optical circuits that perform optical manipulation, may be arranged (or mounted) on the substrate (705).

[0140] In one embodiment, although not shown, circuits for operating and controlling an array (710) of a plurality of light sources (711, 712, 713, ..., 71n), a temperature sensor (740), a monitoring circuit (750), and / or a wavelength detection circuit (755, 760) may be integrated into the substrate (705). For example, circuits for processing signals transmitted and received between the array (710) of a plurality of light sources (711, 712, 713, ..., 71n), a temperature sensor (740), a monitoring circuit (750), and / or a wavelength detection circuit (755, 760) may be integrated and mounted.

[0141] In one embodiment, an array (710) of a plurality of light sources (711, 712, 713, ..., 71n) may include a plurality of light sources (711, 712, 713, ..., 71n). Each of the plurality of light sources (711, 712, 713, ..., 71n) may be implemented to emit light of a different wavelength. For example, a first light source (711) among the plurality of light sources (711, 712, 713, ..., 71n) may be implemented to emit light of a first wavelength (7155) (e.g., λ1). A second light source (712) among the plurality of light sources (711, 712, 713, ..., 71n) may be implemented to emit light of a second wavelength (7205) (e.g., λ2). Among the plurality of light sources (711, 712, 713, ..., 71n), the third light source (713) can be implemented to emit light of a third wavelength (7255) (e.g., λ3). Among the plurality of light sources (711, 712, 713, ..., 71n), the nth light source (71n) can be implemented to emit light of an nth wavelength (7305) (e.g., λ n ) can be implemented to emit light of a first wavelength (e.g., λ1), a second wavelength (e.g., λ2), a third wavelength (e.g., λ3), ..., and an n-th wavelength (e.g., λ n ) may vary.

[0142] In one embodiment, an array (710) of a plurality of light sources (711, 712, 713, ..., 71n) on a substrate (705) may be bonded through a flip-chip process so that the p-electrodes of the light sources face the surface on which the optical integrated circuit is mounted. Since the p-electrodes of the light sources are bonded so that they face the surface on which the optical integrated circuit is mounted, it may be easy to remove heat generated when the light sources are driven. However, the present invention is not limited thereto, and since the p-electrodes of the light sources are bonded so that they face the surface on which the optical integrated circuit is mounted, it may be advantageous to align an active layer (e.g., the active layer (820) of FIG. 8) to an optical waveguide core within the optical integrated circuit. When an array (710) of a plurality of light sources (711, 712, 713, ..., 71n) is bonded to a substrate (705), the light-emitting surfaces of the plurality of light sources (711, 712, 713, ..., 71n) constituting the array (710) of the plurality of light sources (711, 712, 713, ..., 71n) may be formed to protrude from one side (705a) of the substrate (705) (e.g., formed to protrude in the direction in which light is emitted). Since the light emitting surface of the light source is formed to protrude from one side (705a) of the substrate (705), it is possible to prevent the plurality of light sources (711, 712, 713, ..., 71n) from being connected to the substrate (705) or the solder from affecting the light emitting surface of the plurality of light sources (711, 712, 713, ..., 71n).

[0143] In one embodiment, the temperature sensor (740) is disposed proximate to the array (710) of the plurality of light sources (711, 712, 713, ..., 71n) to obtain (or measure) temperature information (or temperature change amount) of the array (710) of the plurality of light sources (711, 712, 713, ..., 71n). In FIG. 7 according to various embodiments, it is described that one temperature sensor (740) is disposed on the substrate (705), but the present invention is not limited thereto. For example, the temperature sensor (740) may include a plurality of temperature sensors. In this case, the plurality of temperature sensors may be disposed proximate to the array (710) of the plurality of light sources (711, 712, 713, ..., 71n).

[0144] In one embodiment, the wavelength detection circuit (755, 760) can measure the amount of change in wavelength of light generated from each light source. In one embodiment, the wavelength detection circuit (755, 760) can include a plurality of wavelength detection circuits, for example, a first wavelength detection circuit (755) and a second wavelength detection circuit (760). For example, the first wavelength detection circuit (755) can be electrically connected to a first light source (711) that forms a minimum wavelength (e.g., a first wavelength (7155) (e.g., λ1)) among the plurality of light sources (711, 712, 713, ..., 71n). For example, the second wavelength detection circuit (760) can be electrically connected to a first light source (711) that forms a maximum wavelength (e.g., an n-th wavelength (e.g., λ)) among the plurality of light sources (711, 712, 713, ..., 71n). n )) can be electrically connected to a second light source (e.g., the nth light source (71n)) forming the nth light source.

[0145] In one embodiment, the monitoring circuit (750) can detect the amount of light of the plurality of light sources (711, 712, 713, ..., 71n). In one embodiment, the monitoring circuit (750) can adjust the current and / or power supplied to the array (710) of the plurality of light sources (711, 712, 713, ..., 71n) according to the temperature information measured by the temperature sensor (740). For example, the processor (260) can adjust the power supplied to the array (710) of the plurality of light sources (711, 712, 713, ..., 71n) by adjusting the current supplied between the first wire (770) (e.g., the cathode wire) and the second wire (730) (e.g., the anode wire).

[0146] In one embodiment, the first wiring (770) (e.g., cathode wiring) and the second wiring (730) (e.g., anode wiring) may be formed to extend to the other side (705b) of the substrate (705) in the form of wiring. Each of the first wiring (770) (e.g., cathode wiring) and the second wiring (730) (e.g., anode wiring) may include multiple wirings. The first wiring (770) (e.g., cathode wiring) and the second wiring (730) (e.g., anode wiring) may be individually formed for the multiple light sources (711, 712, 713, ..., 71n). The present invention is not limited thereto, and the first wiring (770) (e.g., cathode wiring) according to one embodiment may be electrically connected to the multiple light sources (711, 712, 713, ..., 71n) as a single wiring.

[0147] FIGS. 8 and 9 are diagrams illustrating cross-sectional views of a light source and an array (710) of a plurality of light sources (711, 712, 713, ..., 71n) according to one embodiment of the present disclosure.

[0148] Referring to FIG. 8, the first light source (e.g., the first light source (711) of FIG. 7) may be composed of an n-type cladding layer (815), an active layer (820), a p-type cladding layer (830), and / or a contact layer (835) in the form of a compound semiconductor.

[0149] In one embodiment, the first light source (711) may include a ridge channel (850a, 850b) formed through ridge etching. The ridge channel (850a, 850b) may be formed to have a depth that extends into the contact layer (835) and the p-type cladding layer (830). However, the ridge channel (850a, 850b) may also be formed to have a depth that extends to the top of the active layer (820). When forming the ridge channel (850a, 850b), the depth of the ridge channel (850a, 850b) may be adjusted to suit the structure of the optical waveguide in consideration of the mode shape of the emitted light.

[0150] In one embodiment, a diffraction grating layer (825a, 825b) may be formed in the lower region of the ridge channel (850a, 850b). The diffraction grating layer (825a, 825b) may control the wavelength of light. For example, the wavelength of light may be controlled (e.g., changed) based on the repetition period of the grating of the diffraction grating layer (825a, 825b).

[0151] In one embodiment, the first light source (711) may include a ridge formed between ridge channels (850a, 850b). An anode (840) may be formed on the ridge. In one embodiment, the anode (840) may be formed on top of the ridge. After the process of forming the ridge channels (850a, 850b) and forming the diffraction grating layers (825a, 825b) is completed, an insulating film (845) may be formed. The insulating film (845) may be formed of, for example, a SiO2 or Si3N4 material. The insulating film (845) of the ridge may be etched to open the ridge surface. The anode (840) may be formed by depositing a metal material on the opened ridge. The anode (840) may be formed to extend to the ridge channels (850a, 850b) and the insulating film (845). The anode (840) may be provided in a subsequent process to prepare for wire bonding or for smooth contact in a flip chip process.

[0152] In one embodiment, the cathode (805) may be formed after polishing the back surface of the substrate (705).

[0153] In one embodiment, the active layer (820) may be formed to have a specific structure. For example, the specific structure may include a multi-quantum well (MQW) structure. For example, the multi-quantum well structure may refer to a structure in which well layers and barrier layers are repeated. For example, the wavelength of the emitted light may be determined by the composition of the compound semiconductor contained in the well layers.

[0154] In one embodiment, the diffraction grating layers (825a, 825b) can optically couple with a specific resonance mode among various resonance modes of light formed in the active layer (820). The light can be formed by performing a selective oscillation operation in the specific resonance mode optically coupled with the diffraction grating layers (825a, 825b).

[0155] Referring to FIG. 9, an array of multiple light sources (e.g., an array of multiple light sources (710) of FIG. 7) may include multiple light sources (e.g., the light emitting unit (235) of FIG. 2, the multiple light sources (711, 712, 713, ..., 71n) of FIG. 7) having diffraction grating layers (825a, 825b, 910a, 910b, 940a, 940b) of different periods formed in a channel region. The multiple light sources (711, 712, 713, ..., 71n) may form light of different wavelengths. An anode (840, 930, 960) may be individually formed for each light source (711, 712, 713, ..., 71n). A plurality of light sources (711, 712, 713, ..., 71n) may share an n-type cladding layer (815) and an active layer (820). For example, an array (710) of a plurality of light sources (711, 712, 713, ..., 71n) may be separated by ridge channels (850a, 850b), but may be seamlessly connected by the n-type cladding layer (815) and the active layer (820).

[0156] In one embodiment, the p-type cladding layer (830) may be separated from each other in the process of etching the depth of the ridge channel (850a, 850b, 920a, 920b, 950a, 950b). However, the present invention is not limited thereto, and the p-type cladding layer (830) may be shared between a plurality of light sources (711, 712, 713, ..., 71n) in the process of etching the depth of the ridge channel (850a, 850b, 920a, 920b, 950a, 950b). For example, n anodes (840, 930, 960) corresponding to the number of ridges may be formed in the plurality of light sources (711, 712, 713, ..., 71n). In one embodiment, the n-type clad layer (815) is commonly used, so only one cathode (805) can be formed.

[0157] FIG. 10 is a diagram for explaining a method for measuring blood sugar information of a user according to one embodiment of the present disclosure.

[0158] Referring to FIG. 10, an electronic device (e.g., electronic device (101) of FIGS. 1 and 2) may include a substrate (1000), a plurality of light-emitting structures (1010) (e.g., a first light-emitting structure (1011), a second light-emitting structure (1012), ..., an n-th light-emitting structure (101n)), a light-focusing element (1030), and / or a light-detection circuit (1060) (e.g., a light-detection circuit (245) of FIG. 2).

[0159] In one embodiment, the substrate (1000) may include a PCB. A plurality of light-emitting structures (1010), a light-focusing element (1030), and / or a light-detecting circuit (1060) may be disposed (or mounted) on the substrate (1000) (e.g., the substrate (705) of FIG. 7). Although not shown, the substrate (1000) may further include a memory (e.g., the memory (220) of FIG. 2) and / or a processor (e.g., the processor (260) of FIG. 2).

[0160] In one embodiment, each of the plurality of light-emitting structures (1010) (1011, 1012, ..., 101n) may include the structure illustrated in FIG. 7. For example, the plurality of light-emitting structures (1010) may be arranged on the substrate (1000). Each of the plurality of light-emitting structures (1010) (1011, 1012, ..., 101n) may include a plurality of light sources (e.g., the light-emitting unit (325) of FIG. 3). For example, the first light-emitting structure (1011) may emit light at a first-first wavelength (e.g., λ 1,1 ) to the 1-nth wavelength (e.g. λ 1,n ) may include a plurality of light sources implemented to emit light having a second wavelength (e.g., λ 2,1 ) to the 2-n wavelength (e.g. λ 2,n ) may include a plurality of light sources implemented to emit light having an n-1 wavelength (e.g., λ n,1 ) to the nn wavelength (e.g. λn,n ) may include a plurality of light sources implemented to emit light having a wavelength range (e.g., λ). However, the present invention is not limited thereto, and only one light-emitting structure may be arranged on the substrate (1000). In this case, one light-emitting structure may have multiple wavelength bands (e.g., λ 1,1 Inland λ n,n Multiple light sources radiating a wavelength range (of the wavelength) may be included.

[0161] In one embodiment, the plurality of light-emitting structures (1010) may be electrically connected to the substrate (1000) through soldering (e.g., jet soldering) while tilted at a specific angle relative to the substrate (1000). In one embodiment, the specific angle at which the plurality of light-emitting structures (1010) are tilted may be determined based on the positions at which the light focusing element (1030) and the light detection circuit (1060) are arranged. For example, the specific angle may include, but is not limited to, about 1 degree to about 45 degrees.

[0162] In one embodiment, as a plurality of light-emitting structures (1010) are arranged on a substrate (1000) at a specific angle, light reflected from a light-irradiated area (e.g., a part of a user's body (e.g., a finger or wrist)) may be incident on a light detection circuit (1060) arranged in an area other than the area where the plurality of light-emitting structures (1010) are arranged.

[0163] In one embodiment, the processor (260) may cause a plurality of light sources included in each of a plurality of light-emitting structures (1010) having different wavelengths to sequentially emit light (1020). The light (1020) emitted through the plurality of light sources included in the plurality of structures (1010) may be focused by a light focusing element (1030). The light focusing element (1030) may have a shape of a convex lens or a lens of a shape suitable for an optical path toward an upper portion (e.g., a light irradiation area (1050)). The light focusing element (1030) may focus light incident from below (e.g., light emitted through the plurality of light sources). The light focused on the light focusing element (1030) may be emitted (1035) to the light irradiation area (1050) through a light emitting portion (10301) of the light focusing element (1030). At least a portion of the light (1040) reflected from the light irradiation area (1050) may be received (or incident) on the light focusing element (1030) through the light receiving portion (10302) of the light focusing element (1030). The light received through the light receiving portion (10302) of the light focusing element (1030) may be at least partially incident (1045) on the light detection circuit (1060). In one embodiment, the light detection circuit (1060) may include a light receiving portion. The light receiving portion may include a photodiode. The light detection circuit (1060) may convert the light received through the light focusing element (1030) into an electrical signal. The electrical signal may have various wavelengths or frequencies. The electrical signal formed in the light detection circuit (1060) according to one embodiment may be demodulated for each specific frequency, and a response gain may be obtained through the intensity of the demodulated signal. The processor (260) can obtain the user's blood sugar information based on the acquired response gain.

[0164] As described above with reference to FIGS. 2 to 10 according to various embodiments, the electronic device (101) in the present disclosure may include an array (710) of a plurality of light sources emitting light of different wavelengths, a temperature sensor (230, 740), and a wavelength detection circuit (240, 755, 760). The electronic device (101) may obtain temperature information related to the array (710) of the plurality of light sources through the temperature sensor (230, 740), and measure a wavelength variation between the plurality of light sources through the wavelength detection circuit (240, 755, 760). When the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation, the electronic device (101) may adjust the wavelength variation to be less than or equal to the reference wavelength variation, and supply a current corresponding to the adjusted wavelength variation to the plurality of light sources. By supplying current corresponding to the adjusted wavelength change to multiple light sources, the wavelength and light output of the multiple light sources are prevented from changing, thereby obtaining accurate blood sugar information.

[0165] A blood glucose measurement method according to one embodiment of the present disclosure may include an operation of obtaining temperature information related to a plurality of light sources emitting light of different wavelengths using a temperature sensor (230, 740). A blood glucose measurement method according to one embodiment may include an operation of measuring a wavelength variation between a plurality of light sources using a wavelength detection circuit (240, 755, 760). A blood glucose measurement method according to one embodiment may include an operation of adjusting the wavelength variation to be less than or equal to the reference wavelength variation when the wavelength variation according to the obtained temperature information exceeds a reference wavelength variation. A blood glucose measurement method according to one embodiment may include an operation of supplying a current corresponding to the adjusted wavelength variation to a plurality of light sources.

[0166] An operation of adjusting the wavelength change amount so that it is less than or equal to a reference wavelength change amount according to one embodiment may include an operation of adjusting the current supplied to a plurality of light sources so that it is less than or equal to a specified current, thereby adjusting the wavelength change amount so that it is less than or equal to the reference wavelength change amount.

[0167] An operation of adjusting the wavelength variation to be less than or equal to a reference wavelength variation according to one embodiment may include an operation of adjusting temperature information related to a plurality of light sources to be less than or equal to a specified temperature, thereby adjusting the wavelength variation to be less than or equal to the reference wavelength variation.

[0168] A blood glucose measurement method according to one embodiment may include an operation of supplying a current corresponding to an adjusted wavelength change amount to a plurality of light sources, thereby controlling the plurality of light sources to sequentially emit light. A blood glucose measurement method according to one embodiment may include an operation of emitting light emitted from a plurality of light sources and focused on a light focusing element (1030) to a light irradiation area (1050) through a light emitting portion (10301) of the light focusing element (1030), and detecting light emitted through the light focusing element (1030) and reflected by the light irradiation area (1050) and at least a portion of the light received through a light receiving portion (10302) of the light focusing element (1030) through a light detection circuit (245, 1060). A blood glucose measurement method according to one embodiment may include an operation of acquiring blood glucose information of a user based on the detected light.

[0169] A blood sugar measurement method according to one embodiment may include an operation of detecting the amount of light output from each of a plurality of light sources through a monitoring circuit (250, 750).

[0170] A blood sugar measurement method according to one embodiment may include an operation of storing a first mapping table in a memory (220) in which current supplied to a plurality of light sources, temperature information related to the plurality of light sources, a reference wavelength variation amount of each of the plurality of light sources corresponding to the temperature information, and an amount of light output through each of the plurality of light sources according to the reference wavelength variation amount are mapped.

[0171] An operation of adjusting the wavelength change amount according to one embodiment to be less than or equal to a reference wavelength change amount may include an operation of adjusting the wavelength change amount to be less than or equal to the reference wavelength change amount when it is determined that the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount based on the first mapping table.

[0172] A wavelength detection circuit (240, 755, 760) according to one embodiment may include a plurality of wavelength detection circuits. A first wavelength detection circuit (755) among the plurality of wavelength detection circuits according to one embodiment may be electrically connected to a first light source forming a minimum wavelength among the plurality of light sources. A second wavelength detection circuit (760) among the plurality of wavelength detection circuits according to one embodiment may be electrically connected to a second light source forming a maximum wavelength among the plurality of light sources.

[0173] The path of light focused by the light focusing element (1030) according to one embodiment and the path of light transmitted to the light detection circuit (245, 1060) through the light focusing element (1030) may be different.

[0174] A blood glucose measurement method according to one embodiment may include an operation of obtaining a user's reference blood glucose information. A blood glucose measurement method according to one embodiment may include an operation of controlling a plurality of light sources to sequentially emit light. A blood glucose measurement method according to one embodiment may include an operation of obtaining a response gain at a wavelength corresponding to each of the plurality of light sources based on light emitted through the plurality of light sources and reflected by a light irradiation area (1050). A blood glucose measurement method according to one embodiment may include an operation of storing a second mapping table in which the user's reference blood glucose information and the response gain at each wavelength corresponding to the user's reference blood glucose information are mapped in a memory (220).

[0175] A non-transitory computer-readable storage medium storing instructions that, when executed by a processor (260) of an electronic device (101) according to an embodiment of the present disclosure, cause the processor (260) to perform operations, may cause the processor (260) to perform an operation of obtaining temperature information associated with a plurality of light sources emitting light of different wavelengths using a temperature sensor (230, 740). A non-transitory computer-readable storage medium storing instructions that, when executed by a processor (260) of an electronic device (101) according to an embodiment of the present disclosure, may cause the processor (260) to perform operations, may cause the processor (260) to perform an operation of measuring a wavelength variation between a plurality of light sources using a wavelength detection circuit (240, 755, 760). A non-transitory computer-readable storage medium storing instructions that, when executed by a processor (260) of an electronic device (101) according to one embodiment, cause the processor (260) to perform operations, may cause the processor (260) to perform an operation of adjusting the wavelength change amount to be less than or equal to the reference wavelength change amount when the wavelength change amount according to the acquired temperature information exceeds a reference wavelength change amount. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor (260) of an electronic device (101) according to one embodiment, cause the processor (260) to perform operations, may cause the processor (260) to perform an operation of supplying a current corresponding to the adjusted wavelength change amount to a plurality of light sources.

[0176] 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.

[0177] 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. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. 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” can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as “first,” “second,” or “first” or “second” may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as “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.

[0178] 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. In one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0179] 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.

[0180] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0181] 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 separately arranged 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.

Claims

1. In an electronic device (101), substrate (705); A plurality of light sources arranged on the substrate (705) and emitting light of different wavelengths; A temperature sensor (230, 740) placed close to the plurality of light sources; A wavelength detection circuit (240, 755, 760) electrically connected to at least two of the plurality of light sources; Memory (220) for storing instructions; and Contains a processor (260), The above instructions, when executed by the processor (260), cause the electronic device (101) to: Using the above temperature sensor (230, 740), temperature information related to the plurality of light sources is obtained, Using the above wavelength detection circuit (240, 755, 760), the wavelength change between the plurality of light sources is measured, If the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount, the wavelength change amount is adjusted to be less than or equal to the reference wavelength change amount, and An electronic device that supplies current corresponding to the adjusted wavelength change amount to the plurality of light sources.

2. In paragraph 1, The above instructions, when executed by the processor (260), cause the electronic device (101) to: An electronic device that adjusts the current supplied to the plurality of light sources to be less than or equal to a specified current, or adjusts temperature information related to the plurality of light sources to be less than or equal to a specified temperature, so that the wavelength variation amount is less than or equal to the reference wavelength variation amount.

3. In paragraph 1 or 2, A light focusing element (1030) including a light emitting portion (10301) and a light receiving portion (10302); and Further comprising a photodetector circuit (245, 1060), The above instructions, when executed by the processor (260), cause the electronic device (101) to: By supplying a current corresponding to the adjusted wavelength change amount to the plurality of light sources, the plurality of light sources are controlled to sequentially emit light, The light emitted through the plurality of light sources and focused on the light focusing element (1030) is emitted to the light irradiation area (1050) through the light emitting portion (10301) of the light focusing element (1030), and the light emitted through the light focusing element (1030) is reflected by the light irradiation area (1050) and at least a portion of the light received through the light receiving portion (10302) of the light focusing element (1030) is detected through the light detection circuit (245, 1060), and Based on the above-detected light, the user's blood sugar information is obtained, An electronic device in which the path of light focused by the optical focusing element (1030) and the path of light transmitted to the optical detection circuit (245, 1060) through the optical focusing element (1030) are different.

4. In any one of paragraphs 1 to 3, Further comprising a monitoring circuit (250, 750), The above instructions, when executed by the processor (260), cause the electronic device (101) to: The amount of light output from each of the plurality of light sources is detected through the monitoring circuit (250, 750), and A first mapping table in which the current supplied to the plurality of light sources, temperature information related to the plurality of light sources, the reference wavelength change amount of each of the plurality of light sources corresponding to the temperature information, and the amount of light output through each of the plurality of light sources according to the reference wavelength change amount are mapped is stored in the memory (220), and An electronic device that, based on the first mapping table, adjusts the wavelength change amount so that it becomes less than the reference wavelength change amount when it is confirmed that the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount.

5. In any one of paragraphs 1 to 4, The above wavelength detection circuit (240, 755, 760) includes a plurality of wavelength detection circuits, Among the plurality of wavelength detection circuits, the first wavelength detection circuit (755) is electrically connected to the first light source forming the minimum wavelength among the plurality of light sources, and An electronic device in which a second wavelength detection circuit (760) among the plurality of wavelength detection circuits is electrically connected to a second light source forming the maximum wavelength among the plurality of light sources.

6. In any one of paragraphs 3 to 5, The above instructions, when executed by the processor (260), cause the electronic device (101) to: Obtain the user's baseline blood sugar information, Controlling the above multiple light sources to sequentially emit light, Based on the light radiated through the plurality of light sources and reflected by the light irradiation area (1050), a response gain is obtained at a wavelength corresponding to each of the plurality of light sources, and An electronic device that stores a second mapping table that maps the user's reference blood sugar information and the response gain at each wavelength corresponding to the user's reference blood sugar information in the memory (220).

7. In any one of paragraphs 1 to 6, The above plurality of light sources are electronic devices including laser diodes.

8. In the blood sugar measurement method, An operation of obtaining temperature information related to a plurality of light sources emitting light of different wavelengths using a temperature sensor (230, 740); An operation of measuring the amount of wavelength change between the plurality of light sources using a wavelength detection circuit (240, 755, 760); When the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount, an operation of adjusting the wavelength change amount so that it becomes less than the reference wavelength change amount; and A method comprising an operation of supplying a current corresponding to the adjusted wavelength change amount to the plurality of light sources.

9. In paragraph 8, The operation of adjusting the above wavelength change amount to be less than or equal to the reference wavelength change amount is: An operation of adjusting the current supplied to the plurality of light sources to be less than or equal to a specified current, thereby adjusting the wavelength variation to be less than or equal to the reference wavelength variation; or A method including an operation of adjusting temperature information related to the plurality of light sources to be below a specified temperature, thereby adjusting the wavelength variation to be below the reference wavelength variation.

10. In paragraph 8 or 9, An operation of supplying a current corresponding to the adjusted wavelength change amount to the plurality of light sources, thereby controlling the plurality of light sources to sequentially emit light; An operation of detecting light emitted through the plurality of light sources and focused on the light focusing element (1030) to be emitted to the light irradiation area (1050) through the light emitting portion (10301) of the light focusing element (1030), and light emitted through the light focusing element (1030) reflected by the light irradiation area (1050) and at least a portion of which is received through the light receiving portion (10302) of the light focusing element (1030) through the light detection circuit (245, 1060); and Further comprising an action of obtaining the user's blood sugar information based on the above-detected light, The path of light focused by the optical focusing element (1030) and the path of light transmitted to the optical detection circuit (245, 1060) through the optical focusing element (1030) are different methods.

11. In any one of paragraphs 8 to 10, An operation of detecting the amount of light output from each of the plurality of light sources through a monitoring circuit (250, 750); and A method further comprising storing a first mapping table in a memory (220) in which current supplied to the plurality of light sources, temperature information related to the plurality of light sources, a reference wavelength variation amount of each of the plurality of light sources corresponding to the temperature information, and an amount of light output through each of the plurality of light sources according to the reference wavelength variation amount are mapped.

12. In paragraph 11, The operation of adjusting the above wavelength change amount to be less than or equal to the reference wavelength change amount is: A method comprising an operation of adjusting the wavelength change amount to be less than or equal to the reference wavelength change amount when it is confirmed that the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount based on the first mapping table.

13. In any one of paragraphs 8 to 12, The above wavelength detection circuit (240, 755, 760) includes a plurality of wavelength detection circuits, Among the plurality of wavelength detection circuits, the first wavelength detection circuit (755) is electrically connected to the first light source forming the minimum wavelength among the plurality of light sources, and A method in which a second wavelength detection circuit (760) among the plurality of wavelength detection circuits is electrically connected to a second light source forming the maximum wavelength among the plurality of light sources.

14. In any one of paragraphs 10 to 13, An action to obtain the user's baseline blood sugar information; An operation of controlling the above plurality of light sources to sequentially emit light; An operation of obtaining a response gain at a wavelength corresponding to each of the plurality of light sources based on light emitted through the plurality of light sources and reflected by the light irradiation area (1050); and A method further comprising storing a second mapping table that maps the user's reference blood sugar information and the response gain at each wavelength corresponding to the user's reference blood sugar information in a memory (220).

15. In a non-transitory computer-readable storage medium that stores instructions that cause the processor (260) to perform operations when executed by the processor (260) of the electronic device (101), An operation of obtaining temperature information related to a plurality of light sources emitting light of different wavelengths using a temperature sensor (230, 740); An operation of measuring the amount of wavelength change between the plurality of light sources using a wavelength detection circuit (240, 755, 760); When the wavelength change amount according to the acquired temperature information exceeds the reference wavelength change amount, an operation of adjusting the wavelength change amount so that it becomes less than the reference wavelength change amount; and A computer-readable storage medium that causes an operation of supplying current corresponding to the adjusted wavelength change amount to the plurality of light sources.

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