Electronic device and method for controlling brightness of display

Abstract

The disclosure relates to an electronic device and method for controlling the brightness of a display. According to an embodiment, an electronic device may comprise at least one temperature sensor, a display, memory, and at least one processor. The at least one processor may be configured to obtain a surface temperature value of the electronic device using the at least one temperature sensor, set a first brightness control value of the display using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level, and change a brightness of the display based on the first brightness control value. Other embodiments are possible.

Description

[Technical Field]

[0001] The disclosure relates to an electronic device and method for controlling the brightness of a display.[Background Art]

[0002] With digital technology advancing, electronic devices come in various types, such as smartphones, tablet personal computers (PCs), or personal digital assistants (PDAs). Electronic devices have been developed to be worn by users so as to enhance portability and user accessibility.

[0003] Electronic devices may adjust the brightness of the display to control heat generation when the surface temperature rises. Electronic devices have been applied to limit brightness to a relatively large brightness value (e.g., maximum value) determined by the surface temperature or internal temperature value.[Disclosure of Invention][Solution to Problems]

[0004] According to embodiments of the disclosure, an electronic device comprises at least one temperature sensor, at least one illuminance sensor, a display, memory, and at least one processor.

[0005] According to an embodiment, the memory stores instructions that, when executed by the at least one processor, cause the electronic device to obtain a surface temperature value of the electronic device using the at least one temperature sensor.

[0006] According to an embodiment, the memory stores instructions that, when executed by the at least one processor, cause the electronic device to set a first brightness control value of the display using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level.

[0007] According to an embodiment, the memory stores instructions that, when executed by the at least one processor, cause the electronic device to change a brightness of the display based on the first brightness control value.

[0008] According to an embodiment, a method for operating an electronic device comprises obtaining a surface temperature value of the electronic device using at least one temperature sensor.

[0009] According to an embodiment, the method for operating the electronic device comprises setting a first brightness control value of the display using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level.

[0010] According to an embodiment, the method for operating the electronic device comprises changing a brightness of the display based on the first brightness control value.

[0011] According to an embodiment, a non-transitory storage medium stores one or more programs including instructions that, when executed by at least one processor of an electronic device, cause the electronic device to: obtain a surface temperature value of the electronic device using at least one temperature sensor of the electronic device, set a first brightness control value of a display of the electronic device using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level and change a brightness of the display based on the first brightness control value.[Brief Description of Drawings]

[0012] FIG. 1 is a view illustrating an electronic device in a network environment according to various embodiments; FIG. 2 is a view illustrating an example of a configuration of a software module in an electronic device according to an embodiment; FIGS. 3A, 3B, and 3C are views illustrating brightness control information in an electronic device according to an embodiment; FIG. 4 is a view illustrating an example of an operation method in an electronic device according to an embodiment; FIG. 5 is a view illustrating an example of an operation method in an electronic device according to an embodiment; FIG. 6 is a view illustrating an example of an operation method in an electronic device according to an embodiment; and FIG. 7 is a view illustrating an example of measuring a consumption current and temperature according to the brightness of a display and an external temperature in an electronic device according to an embodiment.

[0013] The same or similar reference denotations may be used to refer to the same or similar elements throughout the specification and the drawings.[Mode for the Invention]

[0014] Various embodiments of the present disclosure are now described with reference to the accompanying drawings. As used herein, the term "user" may denote a human or another device using the electronic device.

[0015] FIG. 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1, the electronic device 101 in the network environment 100 may communicate with at least one of an electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or an electronic device 104 or a server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connecting terminal According to an embodiment, the display module 160 may include a first display module 351 corresponding to the user's left eye and / or a second display module 353 corresponding to the user's right eye., a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identification module (SIM) 196, or an antenna module 197. In an embodiment, at least one (e.g., the connecting terminal 178) of the components may be omitted from the electronic device 101, or one or more other components may be added in the electronic device 101. According to an embodiment, some (e.g., the sensor module 176, the camera module 180, or the antenna module 197) of the components may be integrated into a single component (e.g., the display module 160).

[0016] The processor 120 may execute, for example, 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 coupled with the processor 120, and may perform various data processing or computation. According to an embodiment, as at least part of the data processing or computation, the processor 120 may store a command or data received from another component (e.g., the sensor module 176 or the communication module 190) in volatile memory 132, process the command or the data stored in the volatile memory 132, and store resulting data in non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)), or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor 121. For example, when the electronic device 101 includes the main processor 121 and the auxiliary processor 123, the auxiliary processor 123 may be configured to use lower power than the main processor 121 or to be specified for a specified function. The auxiliary processor 123 may be implemented as separate from, or as part of the main processor 121.

[0017] The auxiliary processor 123 may control at least some of functions or states related to at least one component (e.g., the display module 160, the sensor module 176, or the communication module 190) among the components of the electronic device 101, instead 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 state (e.g., executing an application). According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., the neural processing unit) may include a hardware structure specified for artificial intelligence model processing. The artificial intelligence model may be generated via machine learning. Such learning may be performed, e.g., by the electronic device 101 where the artificial intelligence is performed or via a separate server (e.g., the server 108). Learning algorithms may include, but are not limited to, e.g., supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-network or a combination of two or more thereof but is not limited thereto. The artificial intelligence model may, additionally or alternatively, include a software structure other than the hardware structure.

[0018] The memory 130 may store various data used by at least one component (e.g., the processor 120 or the sensor module 176) of the electronic device 101. The various data may include, for example, software (e.g., the program 140) and input data or output data for a command related thereto. The memory 130 may include the volatile memory 132 or the non-volatile memory 134.

[0019] The program 140 may be stored in the memory 130 as software, and may include, for example, an operating system (OS) 142, middleware 144, or an application 146.

[0020] The input module 150 may receive a command or data to be used by other component (e.g., the processor 120) of the electronic device 101, from the outside (e.g., a user) of the electronic device 101. The input module 150 may include, for example, a microphone, a mouse, a keyboard, keys (e.g., buttons), or a digital pen (e.g., a stylus pen).

[0021] The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used for receiving incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker.

[0022] The display module 160 may visually provide information to the outside (e.g., a user) of the electronic device 101. The display 160 may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display 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.

[0023] The audio module 170 may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module 170 may obtain the sound via the input module 150, or output the sound via the sound output module 155 or a headphone of an external electronic device (e.g., an electronic device 102) directly (e.g., wiredly) or wirelessly coupled with the electronic device 101.

[0024] The sensor module 176 may detect an operational state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) external to the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an accelerometer, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0025] The interface 177 may support one or more specified protocols to be used for the electronic device 101 to be coupled with the external electronic device (e.g., the electronic device 102) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0026] A connecting terminal 178 may include a connector via which the electronic device 101 may be physically connected with the external electronic device (e.g., the electronic device 102). According to an embodiment, the connecting terminal 178 may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector).

[0027] The haptic module 179 may convert an electrical signal into a mechanical stimulus (e.g., a vibration or motion) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electric stimulator.

[0028] The camera module 180 may capture a still image or moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

[0029] The power management module 188 may manage power supplied to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

[0030] The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell.

[0031] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and the external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108) and performing communication via the established communication channel. The communication module 190 may include one or more communication processors that are operable independently from the processor 120 (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an 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 (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device 104 via a first network 198 (e.g., a short-range communication network, such as Bluetooth ™< , wireless-fidelity (Wi-Fi) 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., local area network (LAN) or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module 192 may identify or authenticate the electronic device 101 in a communication network, such as the first network 198 or the second network 199, using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module 196.

[0032] The wireless communication module 192 may support a 5G network, after a 4G network, and next-generation communication technology, e.g., new radio (NR) access technology. The NR access technology may support enhanced mobile broadband (eMBB), massive machine type communications (mMTC), or ultra-reliable and low-latency communications (URLLC). The wireless communication module 192 may support a high-frequency band (e.g., the mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module 192 may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may 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 an embodiment, the wireless communication module 192 may support a peak data rate (e.g., 20Gbps or more) for implementing eMBB, loss coverage (e.g., 164dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5ms or less for each of downlink (DL) and uplink (UL), or a round trip of 1ms or less) for implementing URLLC.

[0033] The antenna module 197 may transmit or receive a signal or power to or from the outside (e.g., the external electronic device). According to an embodiment, the antenna module 197 may include one antenna including a radiator formed of a conductive body or conductive pattern formed on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an antenna array). In this case, at least one antenna appropriate for a communication scheme 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, e.g., the communication module 190. The signal or the power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, other parts (e.g., radio frequency integrated circuit (RFIC)) than the radiator may be further formed as part of the antenna module 197.

[0034] According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to an embodiment, the mmWave antenna module may include a printed circuit board, a RFIC disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the specified high-frequency band.

[0035] At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

[0036] According to an embodiment, instructions or data may be transmitted or received between the electronic device 101 and the external electronic device 104 via the server 108 coupled with the second network 199. The external electronic devices 102 or 104 each may be a device of the same or a different type from the electronic device 101. According to an embodiment, all or some of operations to be executed at the electronic device 101 may be executed at one or more of the external electronic devices 102, 104, or 108. For example, if the electronic device 101 should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device 101, instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device 101. The electronic device 101 may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device 101 may provide ultra low-latency services using, e.g., distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet-of-things (IoT) device. The server 108 may be an intelligent server using machine learning and / or a neural network. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or health-care) based on 5G communication technology or IoT-related technology.

[0037] An electronic device and an operation method in the electronic device for controlling the brightness of a display according to an embodiment are described with reference to the configuration of the electronic device of FIG. 1. Hereinafter, the term 01 mayn" described according to an embodiment of the disclosure may be replaced with at least one term among "identify," "detect," "receive," or "calculate," and the term "identify" may be replaced with at least one term among "determine," "decide," or "confirm."

[0038] FIG. 2 is a view illustrating an example of a configuration of a software module in an electronic device according to an embodiment.

[0039] Referring to FIGS. 1 and 2, an electronic device 101 (e.g., the electronic device 101 of FIG. 1) according to an embodiment may implement a software module 201 (e.g., the program 140 of FIG. 1) for executing brightness control of a display (e.g., the display module 160 of FIG. 1). The memory 130 of the electronic device 101 may store commands (e.g., instructions) for implementing the software module 201 of FIG. 2. The at least one processor 120 may execute instructions stored in the memory 130 to implement the software module 201 illustrated in FIG. 2, and may control hardware (e.g., the sensor module 176, the power management module 188, the display module 160, or other necessary components of FIG. 1) associated with the function of the software module 201.

[0040] The software module 201 of the electronic device 101 according to an embodiment may include a kernel 210 (or a hardware abstraction layer (HAL)) 220, a framework 220 (e.g., the middleware 144 of FIG. 1), and an application 230 (e.g., the application 146 of FIG. 1). At least a portion of the software module 201 may be preloaded on the electronic device 101 or may be downloaded from a server (e.g., the server 108).

[0041] According to an embodiment, the kernel 210 may be configured to include, e.g., a display driver 211. The kernel 210 may include, e.g., a system resource manager or a device driver, but is not limited thereto and may be configured to further include other modules. The system resource manager may perform control, allocation, or recovery of system resources. The device driver may include, e.g., a camera driver, a Bluetooth driver, a shared memory driver, a USB driver, a keypad driver, a Wi-Fi driver, an audio driver, an inter-process communication (IPC) driver, or other device drivers.

[0042] According to an embodiment, the framework 220 may include, e.g., a display management service 221 and a power management service 223, but is not limited thereto and may be configured to further include another module (or service). The framework 220 may provide functions commonly required by the application 230, or may provide various functions to the application 230 through an application programming interface (API) (not shown) such that the application 230 may efficiently use limited system resources inside the electronic device 101. The display management service 211 may provide a function according to driving of the display. The power management service 223 may transfer a first brightness control value set by the processor 120 to change the brightness of the display to the first brightness control value, which is a relatively large brightness control value (e.g., a maximum value), to the display driver 211 under the control of the processor 120. The power management service 223 may manage a battery or a power source, provide power information necessary for an operation of the electronic device, and provide a function for identifying current consumption according to heat generation control. The framework 220 may include a module that forms a combination of various functions of the above-described components. The framework 220 may provide a specified module per type of the operating system in order to provide a differentiated function. The framework 220 may dynamically omit some existing components or add new components.

[0043] According to an embodiment, the application 230 may be configured to include an application 231 (e.g., a module, a manager, or a program) related to brightness control of the display. The application 230 may include applications according to heat generation control of the electronic device or execution of various functions. The application 230 may include an application received from an external electronic device (e.g., the server 108 or the electronic devices 102 and 104). According to an embodiment, the application 230 may include a preloaded application or a third party application downloadable from a server. The components of the software module 201 and the names of the components according to the illustrated embodiment may be varied depending on the type of the operating system. According to an embodiment, at least a part of the software module 201 may be implemented in software, firmware, hardware, or in a combination of two or more thereof. At least part of the software module 201 may be implemented (e.g., executed) by e.g., a processor (e.g., an AP). At least a part of the software module 201 may include at least one of, e.g., a module, program, routine, set of instructions, process, or the like for performing at least function.

[0044] FIGS. 3A, 3B, and 3C are views illustrating brightness control information in an electronic device according to an embodiment.

[0045] Referring to FIGS. 1, 2, 3A, 3B, and 3C, according to an embodiment, the processor 120 of the electronic device (e.g., the electronic device 101 of FIGS. 1 and 2) may obtain a surface temperature value of the electronic device 101 using at least one temperature sensor included in the sensor module 176. According to an embodiment, the external temperature of the electronic device 101 may be obtained using at least one temperature sensor included in the sensor module 176, and an illuminance value (e.g., a luminance value) may be obtained by detecting external light (e.g., direct sunlight) using the at least one illuminance sensor included in the sensor module 176. Here, the surface temperature value may be obtained through machine learning by learning the actual surface temperature detected in the area of the housing of the electronic device 101 using at least one temperature sensor The external temperature value may using different temperature difference values between sensors for measuring the internal temperature of the electronic device 101 and may be obtained (e.g., estimate or calculation) using an equation modeling technique, machine learning or a temperature table stored in the memory 130 based on different temperature difference values The method of obtaining the surface temperature value and the external temperature value is not limited. The external temperature value may be different from the actual temperature value of the external environment surrounding the electronic device 101. The processor 120 may obtain the surface temperature value by alternatively or complementarily using the internal temperature of the electronic device 101. Here, the internal temperature may be obtained using the temperature change detected by the temperature sensor (e.g., thermistor) adjacent to the module of the electronic device 101 that is not related to heat generation and the time required for the temperature change.

[0046] According to an embodiment, the processor 120 may identify that it is necessary to control the brightness of the display (e.g., the display module 160 of FIG. 1) due to the increase in the temperature of the electronic device 101 due to the external influence to a relatively large brightness (e.g., maximum brightness), based on the surface temperature value being equal to or higher than a reference temperature Tc (e.g., 38 degrees ( (ment, the processor 120 may identify that it is necessary to control the bre value Ts. According to an embodiment, the processor 120 may obtain a specified brightness control value (e.g., setting value) corresponding to the external temperature value and / or the illuminance value from the brightness control information (e.g., the first brightness control information of FIG. 3A, the second brightness control information of FIG. 3B, or the third brightness control information of FIG. 3C), and set the obtained brightness control value to the first brightness control value (e.g., the maximum brightness control value) of the display. Here, the brightness control value (e.g., setting value) included in the brightness control information may be set corresponding to a specified external temperature level and / or a specified illuminance level. The brightness control information may be preset in the form of a table and stored in memory (e.g., the memory 130 of FIG. 1).

[0047] According to an embodiment, the processor 120 may change the brightness of the display to increase the visibility of the display, based on the set first brightness control value.

[0048] According to an embodiment, when the brightness of the display is not set to the first brightness control value, the processor 120 may set the brightness of the display to a specified brightness control value corresponding to the external temperature value and / or illuminance value obtained using the default brightness control information (e.g., the second brightness control information of FIG. 3B).

[0049] According to an embodiment, as illustrated in FIGS. 3A and 3B, the processor 120 may pre-designate the first brightness control information and the second brightness control information for setting a relatively large brightness control value (e.g., a maximum brightness control value), which is the first control brightness value, and store the first brightness control information and the second brightness control information in the memory 130.

[0050] Referring to FIG. 3A, the first brightness control information according to an embodiment may include brightness control values (e.g., setting value) for changing or setting the first brightness control value (e.g., the maximum brightness control value and a brightness policy) based on the external temperature value and / or an illuminance value. The default brightness control values 400, 300, 200, and 150 (e.g., default setting value) of the first brightness control information of FIG. 3A may be set to respectively correspond to the external temperature levels and the specified surface temperature levels based on a reference illuminance level (e.g., 3000lux J. or 3000 lux or less).The basic brightness control values (400, 300, 200, 150) of the first brightness control information in FIG. 3A correspond to each of the external temperature levels and each of the specified surface temperature levels based on the reference illuminance level (e.g., 3000 lux or less)., may be set (e.g., specified). The first brightness control information may not set the brightness control value such that the first brightness control value is not changed (e.g., is not limited) corresponding to the first reference surface temperature level (e.g., 38 degrees or less). Here, the specified surface temperature levels may include a specified first surface temperature level (e.g., 40 degrees (or a temperature value within a range of greater than 38 degrees to less than or equal to 40 degrees )), a second surface temperature level (e.g., 42 degrees (or a temperature value within a range of more than 40 degrees to 42 degrees or less)), a third surface temperature level (e.g., 45 degrees (or a temperature value within a range of greater than 42 degrees to less than or equal to 45 degrees)), and a second reference surface temperature level (e.g., 47 degrees or more). Here, the external temperature levels may include a first external temperature level (e.g., 30 degrees (or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees)) and a second external temperature level (e.g., 35 degrees (or a temperature value within a range of greater than 30 degrees to less than or equal to 35 degrees)).

[0051] In the first brightness control information of FIG. 3A, brightness control values (e.g., 600, 600, 200, and 150) may be set(e.g., specified) corresponding to the first external temperature level and the first illuminance level (e.g., 3000lux e.or illuminance values greater than 3000 lux to less than or equal 10000 lux) and corresponding to the each of the specified surface temperature levels (e.g. 40 degrees, 42 degrees, 45 degrees and 47 degrees). In the first brightness control information of FIG. 3A, brightness control values (e.g., 800, 600, 300, and 150) may be set (e.g., specified) corresponding to the first external temperature level and a second illuminance level (e.g., 10000lux $ or an illuminance value greater than 10000 lux) and corresponding to the each of the specified surface temperature levels (e.g. 40 degrees, 42 degrees, 45 degrees and 47 degrees). In the first brightness control information of FIG. 3A, brightness control values (e.g., 800, 600, 300, and 150) may be set (e.g., specified) corresponding to the second external temperature level and the first illuminance level (e.g., 3000lux T or illuminance values greater than 3000 lux to less than or equal to 10000 lux) and corresponding to the each of the specified surface temperature levels (e.g. 40 degrees, 42 degrees, 45 degrees and 47 degrees). In the first brightness control information of FIG. 3A, brightness control values (e.g., 800, 600, 400, and 150) may be set (e.g., specified) corresponding to the second external temperature level and the first illuminance level and the second illuminance level (e.g., 10000lux T or an illuminance value greater than 10000 lux) and corresponding to the each of the specified surface temperature levels (e.g. 40 degrees, 42 degrees, 45 degrees and 47 degrees).

[0052] Referring to FIG. 3B, the second brightness control information according to an embodiment may include default brightness control values (e.g., default setting value) for changing or specifying a relatively large brightness control value (e.g., the maximum brightness control value and the brightness policy), which is the first brightness control value, based on the external temperature value and / or the illuminance value. The default brightness control values (e.g., 400, 300, 200, and 150) of the second brightness control information of FIG. 3B may be set (e.g., specified) corresponding to a reference external temperature (e.g., 25 degrees or less), a specified first surface temperature level (e.g., 40 degrees (or a temperature value within a range of greater than 38 degrees to less than or equal to 40 degrees), a specified second surface temperature level (e.g., 47 degrees or greater than 45 degrees to less than or equal to 47 degrees), a reference illuminance level (e.g., 3000lux ↓. or an illuminance value 3000 lux or less), a first illuminance level (e.g., 3000lux ↑ or an illuminance value greater than 3000 lux to less than or equal to 10000 lux), and / or a second illuminance level (e.g., 10000lux Tor an illuminance value greater than 10000 lux). The second brightness control information may not set (e.g., specified) the brightness control value such that the first brightness control value is not changed (e.g., is not limited) corresponding to the first reference surface temperature level (e.g., 38 degrees or less).

[0053] Referring to FIG. 3C, according to an embodiment, the processor 120 may pre-designate third brightness control information for setting the first brightness control value and store the third brightness control information in the memory 130. According to an embodiment, in the third brightness control information, the processor 120 may set brightness control values (e.g., setting values) specified corresponding to the first illuminance level and corresponding to each the specified surface temperature levels at a specific external temperature (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) and less than a second reference temperature less (e.g., less than 47 degrees) to be high by a specified first ratio (e.g., 25% as compared to the reference illuminance level of FIG. 3C). According to an embodiment, in the third brightness control information, the electronic device may set brightness control values (e.g., setting values) specified corresponding to the second illuminance level and corresponding to each the specified surface temperature levels at a specific external temperature (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) and less than a second reference temperature less (e.g., less than 47 degrees) to be high by a specified second ratio (e.g., 50% as compared to the reference illuminance level of FIG. 3C). Here, in the third brightness control information, the brightness control values (e.g., setting values) specified corresponding to each at the temperature levels (e.g., the specified first surface temperature level (e.g., 40 degrees (or a temperature value within a range of greater than 38 degrees to less than or equal to 40 degrees) and the specified second surface temperature level (e.g., 47 degrees or greater than 45 degrees to less than or equal to 47 degrees)) may be set to be high by a higher ratio (e.g., a predetermined ratio specified by the user or experimentally) than the default brightness control values (e.g., 400, 300, 200, and 150) included in the second brightness control information of FIG. 3B or the default brightness control values (e.g., 400, 300, 200, and 150) of the reference illuminance level (e.g., 3000lux ↓leve3000lux or less).

[0054] The external temperature levels and the surface temperature levels specified in the first to third brightness information illustrated in FIGS. 3A to 3C may be specified in advance through an experiment, and may be set to values or ranges other than the values or ranges set in FIG. 3A according to at least one of the device type, the use environment (e.g., outdoor, indoor, weather, or use time), or factors related to heat generation (e.g., the used application).

[0055] According to an embodiment, the processor 120 may set the first brightness control value as a brightness control value (e.g., setting value) included in first brightness control information corresponding to the surface temperature value and the external temperature value based on the surface temperature value being greater than or equal to the reference surface temperature Tc level and the external temperature value being greater than a reference external temperature level. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value of the electronic device is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained external temperature value is the first external temperature level (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) greater than the reference external temperature level (e.g., 25 degrees), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 600nt or 800nt) corresponding to the first surface temperature level and the first external temperature level and set the obtained brightness control value (e.g., 600nt or 800nt) as the first brightness control value. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value of the electronic device 101 is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained illuminance value is the first illuminance level (e.g., 3000lux ↑ or an illuminance value within a range of greater than 3000lux to less than or equal to 10000lux) greater than the first reference illuminance level (e.g., 3000lux), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 600nt) corresponding to the first surface temperature level and the first illuminance level and set the obtained brightness control value (e.g., 600nt) as the first brightness control value.

[0056] According to an embodiment, the processor 120 may set the brightness of the display as the default brightness control value (e.g., default setting value) included in the second brightness control information corresponding to the surface temperature value and the external temperature value based on the surface temperature value being the reference temperature Tc level or more and the external temperature value being less than or equal to the reference external temperature. For example, as illustrated in FIG. 3B, upon identifying that the obtained surface temperature value of the electronic device 101 is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained external temperature value is the reference external temperature level (e.g., 25 degrees), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 400nt) corresponding to the first surface temperature level and the reference external temperature level and set the obtained brightness control value (e.g., 400nt) as the first brightness control value. For example, as illustrated in FIGS. 3A and 3B, upon identifying that the obtained surface temperature value of the electronic device 101 is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained illuminance value is less than or equal to the reference illuminance level (e.g., 3000lux), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 400nt) corresponding to the first surface temperature level and the reference illuminance level and set the obtained brightness control value (e.g., 400nt) as the first brightness control value.

[0057] According to an embodiment, if the first brightness control value is less than the current brightness value, the processor 120 may change the brightness of the display to the set first brightness control value and, unless the first brightness control value is the current brightness value, may not change the brightness of the display to the first brightness control value.

[0058] According to an embodiment, the processor 120 may also set the first brightness control value based on all of the surface temperature, the external temperature value, and the illuminance value. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), the obtained external temperature value is the first external temperature level (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) greater than the reference external temperature level (e.g., 25 degrees), and the illuminance value is the first illuminance level (e.g., an illuminance value of more than 3000lux to less than 10000lux), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 600nt) corresponding to the first surface temperature level, the first external temperature level, and the first illuminance level and set the obtained brightness control value (e.g., 600nt) as the first brightness control value.

[0059] According to an embodiment, the processor 120 may obtain a brightness control value (e.g., setting value) specified in third brightness information corresponding to the obtained surface temperature value, the external temperature value, and / or the illuminance value, and set the first brightness control value as the obtained brightness control value. For example, if the obtained external temperature value is a specific temperature level (e.g., 30 degrees or a range of greater than 25 degrees to less than or equal to 30 degrees), and is the first surface temperature level (e.g., 40 degrees or a range of greater than 38 degrees to less than or equal to 40 degrees) set corresponding to the second illuminance level (e.g., a range of more than 3000lux to less than 10000lux) at less than the second reference temperature, the processor 120 may set a brightness control value (e.g., 500nt) specified to be higher by a first ratio (e.g., 25%) than the default brightness control value as the first brightness control value, corresponding to the second illuminance level and the first surface temperature level.

[0060] According to an embodiment, the processor 120 may be configured not to change or set the brightness of the display to the first brightness control value based on the obtained surface temperature value being less than the reference temperature level.

[0061] Main components of the electronic device 101 of FIGS. 1 and 2 have been described above according to an embodiment. According to an embodiment, however, all of the components of FIG. 2 are not essential components, and the electronic device 101 may be implemented with more or less components than those shown. The positions of the major components of the electronic device 101 described above in connection with FIGS. 1 and 2 may be varied according to various embodiments of the present invention.

[0062] According to an embodiment, an electronic device (e.g., the electronic device 101 of FIGS. 1 and 2) may comprise at least one temperature sensor (e.g., at least one temperature sensor included in the sensor module 176 of FIG. 1), at least one illuminance sensor (e.g., at least one illuminance sensor included in the sensor module 176 of FIG. 1), a display (e.g., the display module 160 of FIG. 1), memory (e.g., the memory 130 of FIG. 1), and at least one processor (e.g., the processor 120 of FIG. 1).

[0063] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to obtain a surface temperature value of the electronic device using the at least one temperature sensor.

[0064] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to set a first brightness control value of the display using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level.

[0065] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to change a brightness of the display based on the first brightness control value. By taking account of the external temperature, relatively large brightness control value can be set, thereby minimizing influence by surface heat generation and increasing visibility of the display, thus to mitigate inconvenience in use of the electronic device by the user during heat generation control operation.

[0066] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to store the surface temperature value based on the surface temperature value being greater than or equal to the reference surface temperature level and set the first brightness control value using first brightness control information stored in the memory.

[0067] According to an embodiment, the external temperature value may be estimated using an equation modeling technique, machine learning or a temperature table stored in the memory based on different temperature difference values.

[0068] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to, when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a first setting value corresponding to the surface temperature value and the illuminance value in first brightness control information stored in the memory, and set the first brightness control value as the identified first setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level. According to an embodiment, the first setting value may be a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the first brightness control information.

[0069] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to identify a second setting value corresponding to the surface temperature value and the illuminance value in second brightness control information stored in the memory, and set the brightness of the display as the identified second setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being less than or equal to the reference illuminance level. According to an embodiment, the second setting value may be a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the second brightness control information. According to an embodiment, the first brightness control value may be a maximum brightness control value.

[0070] According to an embodiment, the first brightness control information may include setting values specified corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form, , and the second brightness control information may include setting values corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form.

[0071] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to, when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a third setting value corresponding to the surface temperature value and the external temperature value in the first brightness control information and set the first brightness control value as the identified third setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being greater than a reference external temperature level. According to an embodiment, the third setting value may be a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the first brightness control information.

[0072] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to identify a fourth setting value corresponding to the surface temperature value and the external temperature value in second brightness control information and set the brightness of the display as the identified fourth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being less than or equal to the reference external temperature level. According to an embodiment, the fourth setting value may be a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the second brightness control information.

[0073] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to obtain a current brightness value of the display and change the brightness of the display into the first brightness control value based on the first brightness control value being less than the current brightness value.

[0074] According to an embodiment, the memory may store instruction configured to, when executed by the at least one processor, enable the electronic device to maintain the brightness of the display without changing the brightness of the display based on the first brightness control value being greater than or equal to the current brightness value.

[0075] According to an embodiment, the memory may store instruction that, when executed by the at least one processor, cause the electronic device to, when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a fifth setting value corresponding to the surface temperature value and the illuminance value or the external temperature value in third brightness control information stored the memory, and set the first brightness control value as the identified fifth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level or the external temperature value being greater than a reference external temperature level. According to an embodiment, the fifth setting value may be a setting value corresponding to the surface temperature value and the illuminance value or the external temperature value among setting values included in the third brightness control information.

[0076] According to an embodiment, the third brightness control information may include setting values specified corresponding to a first illuminance level specified and corresponding to each of surface temperature levels specified, and the setting values corresponding to the first illuminance level may be specified to be higher by a first ratio than default brightness control values. According to an embodiment, the third brightness control information may include setting values specified corresponding to a second illuminance level specified and corresponding to each of the surface temperature levels specified, and the setting values corresponding to the second illuminance level may be specified to be higher by a second ratio than the default brightness control values.

[0077] According to an embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to maintain the brightness of the display without changing the brightness of the display based on the surface temperature value being less than the reference surface temperature level.

[0078] FIG. 4 is a view illustrating an example of an operation method in an electronic device according to an embodiment.

[0079] Referring to FIG. 4, in operation 401, an electronic device (e.g., the electronic device 101 or the processor 120 of FIGS. 1 and 2) according to an embodiment may obtain a surface temperature value of the electronic device using at least one temperature sensor included in a sensor module (e.g., the sensor module 176 of FIG. 1). The electronic device may obtain the external temperature of the electronic device using at least one temperature sensor included in the sensor module, and an illuminance value (e.g., a luminance value) may be obtained by detecting external light (e.g., direct sunlight) using the at least one illuminance sensor. Here, the surface temperature value may be obtained through machine learning by learning the actual surface temperature detected in the area of the housing of the electronic device using at least one temperature sensor. The external temperature value may using different temperature difference values between sensors for measuring the internal temperature of the electronic device, and may be estimated using an equation modeling technique, machine learning or a temperature table stored in the memory based on different temperature difference values. The method of measuring the surface temperature value and the external temperature value is not limited. The surface temperature value may be obtained using the internal temperature alternatively or complementarily.

[0080] In operation 403, the electronic device according to an embodiment may identify whether the surface temperature value is greater than or equal to the reference temperature Tc level. As a result of the identification, when the surface temperature value is greater than or equal to the reference temperature level (Yes in operation 403), the electronic device may perform operation 405, and when the surface temperature value is not greater than or equal to the reference temperature level (No in operation 403), the electronic device may perform operation 401.

[0081] In operation 405, the electronic device according to an embodiment may identify that it is necessary to control the brightness of the display (e.g., the display module 160 of FIG. 1) due to the increase in the temperature of the electronic device due to the external influence to a relatively large brightness (e.g., maximum brightness), based on the surface temperature value being equal to or higher than a reference temperature Tc level, and store the obtained surface temperature value Ts.

[0082] In operation 407, the electronic device according to an embodiment may set a relatively large brightness control value (e.g., a maximum brightness control value), which is a first brightness control value for maximally changing the brightness of the display, based on the obtained external temperature value or the obtained illuminance value. The electronic device may obtain a specified brightness control value corresponding to the external temperature value and / or the illuminance value from the brightness control information (e.g., the first brightness control information of FIG. 3A, the second brightness control information of FIG. 3B, or the third brightness control information of FIG. 3C), and set the obtained brightness control value to the first brightness control value of the display. Here, the brightness control value included in the brightness control information may be set corresponding to a specified external temperature level and / or a specified illuminance level. The brightness control information may be preset in the form of a table and stored in memory (e.g., the memory 130 of FIG. 1).

[0083] In operation 409, the electronic device according to an embodiment may change the brightness of the display based on the first brightness control value.

[0084] When the brightness of the display is not set to the first brightness control value, the electronic device according to an embodiment may set the brightness of the display to a specified brightness control value corresponding to the external temperature value and / or illuminance value obtained using the default brightness control information (e.g., the second brightness control information).

[0085] FIG. 5 is a view illustrating an example of an operation method in an electronic device according to an embodiment.

[0086] Referring to FIG. 5, in operation 501, an electronic device (e.g., the electronic device 101 or the processor 120 of FIGS. 1 and 2) according to an embodiment may obtain a surface temperature value of the electronic device using at least one temperature sensor included in a sensor module (e.g., the sensor module 176 of FIG. 1). The electronic device may obtain (e.g., estimate or calculation) the external temperature value of the electronic device, and obtain an illuminance value by detecting external light (e.g., direct sunlight) using the at least one illuminance sensor included in a sensor module. Here, the surface temperature value may be obtained through machine learning by learning the actual surface temperature detected in the area of the housing of the electronic device using at least one temperature sensor. The external temperature value may be obtained through an equation modeling technique, machine learning or a temperature table stored in the memory based on temperature difference values between sensors for measuring the internal temperature of the electronic device 101. The disclosure is not limited thereto. The surface temperature value may be obtained using the internal temperature alternatively or complementarily.

[0087] In operation 503, the electronic device according to an embodiment may identify whether the surface temperature value is greater than or equal to the reference temperature Tc level. As a result of the identification, when the surface temperature value is greater than or equal to the reference temperature level (Yes in operation 503), the electronic device may perform operation 505, and when the surface temperature value is not greater than or equal to the reference temperature level (No in operation 503), the electronic device may perform operation 501. When the obtained surface temperature value is the first reference temperature level (e.g., 38 degrees which is less than or equal to the first reference temperature level of FIGS. 3A to 3C), the electronic device may maintain the currently set brightness (e.g., automatically set according to an application or a use environment or manually set by the user) without changing the display brightness (e.g., no limitation). When the obtained surface temperature value is greater than or equal to a specific temperature (e.g., 47 degrees, which is the second reference temperature level of FIGS. 3A to 3C), the electronic device may set the display brightness to a brightness control value (e.g., 150nt) specified equally for all illuminance levels without maximizing the display brightness.

[0088] In operation 505, the electronic device according to an embodiment may identify that it is necessary to control the brightness of the display (e.g., the display module 160 of FIG. 1) due to the increase in the temperature of the electronic device due to the external influence to a relatively large brightness (e.g., maximum brightness), and store the obtained surface temperature value Ts.

[0089] In operation 507, the electronic device according to an embodiment may identify whether the illuminance value is greater than the reference illuminance level. As a result of the identification, when the illuminance value is greater than the reference illuminance level, the electronic device may perform operation 509, and when the illuminance value is less than or equal to the reference illuminance level, the electronic device may perform operation 511.

[0090] In operation 509 (Yes in operation 507), the electronic device according to an embodiment may set a relatively large brightness control value (e.g., maximum brightness control value) which is the first brightness control value based on the first brightness control information. The electronic device may obtain the brightness control value (e.g., setting value) included in the first brightness control information corresponding to the obtained illuminance value and set the obtained brightness control value as the first brightness control value. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value of the electronic device is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained illuminance value is the first illuminance level (e.g., an illuminance value within a range of greater than 3000lux to less than or equal to 10000lux) greater than the first reference illuminance level (e.g., 3000lux), the electronic device may obtain a specified brightness control value (e.g., a luminance value of 600nt) corresponding to the first surface temperature level and the first illuminance level and set the obtained brightness control value (e.g., 600nt) as the first brightness control value. The illuminance levels and the surface temperature levels specified in the first brightness control information may be specified in advance through an experiment, and may be set to values or ranges other than the values or ranges set in FIG. 3A according to at least one of the device type, the use environment (e.g., outdoor, indoor, weather, or use time), or factors related to heat generation (e.g., the used application). When performing operation 509, the external temperature may not be considered or the external temperature may be identified that the external temperature is less than or equal to the reference external temperature level (e.g., 25 degrees).

[0091] In operation 511 (No in operation 507), the electronic device according to an embodiment may set the first brightness control value based on the second brightness control information. The electronic device may obtain the brightness control value (e.g., setting value) included in the second brightness control information corresponding to the obtained illuminance value and set the obtained brightness control value as the first brightness control value. For example, as illustrated in FIGS. 3A and 3B, upon identifying that the obtained surface temperature value of the electronic device is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained illuminance value is less than or equal to the reference illuminance level (e.g., 3000lux), the electronic device may obtain a specified brightness control value (e.g., a luminance value of 400nt) corresponding to the first surface temperature level and the reference illuminance level and set the obtained brightness control value (e.g., 400nt) as the first brightness control value. The illuminance levels and the surface temperature levels specified in the second brightness control information may be specified in advance through an experiment, and may be set to values or ranges other than the values or ranges set in FIG. 3B according to at least one of the device type, the use environment (e.g., outdoor, indoor, weather, or use time), or factors related to heat generation (e.g., the used application). When performing operation 511, the external temperature may not be considered or it may be identified that the external temperature is less than or equal to the reference external temperature level (e.g., 25 degrees).

[0092] In operation 513, the electronic device according to an embodiment may identify whether the first brightness control value is less than the current brightness value. As a result of the identification, when the set brightness control value is less than the current brightness value (Yes in operation 513), the electronic device may perform operation 515, and when not (No in operation 513), the electronic device may perform operation 501.

[0093] In operation 515, the electronic device according to an embodiment may change the brightness of the display to the set brightness control value.

[0094] FIG. 6 is a view illustrating an example of an operation method in an electronic device according to an embodiment.

[0095] Referring to FIG. 6, in operation 601, an electronic device (e.g., the electronic device 101 or the processor 120 of FIGS. 1 and 2) according to an embodiment may obtain a surface temperature value of the electronic device using at least one temperature sensor included in a sensor module (e.g., the sensor module 176 of FIG. 1). The electronic device may obtain (e.g., estimate or calculation) the external temperature of the electronic device, and an illuminance value may be obtained by detecting external light (e.g., direct sunlight) using the at least one illuminance sensor included in a sensor module. Here, the surface temperature value may be obtained through machine learning by learning the actual surface temperature detected in the area of the housing of the electronic device using at least one temperature sensor. The external temperature value may be obtained through an equation modeling technique, machine learning or a temperature table stored in the memory based on temperature difference values between sensors for measuring the internal temperature of the electronic device 101. The method of obtaining the surface temperature value and the external temperature value is not limited. The surface temperature value may be obtained using the internal temperature alternatively or complementarily.

[0096] In operation 603, the electronic device according to an embodiment may identify whether the surface temperature value is greater than or equal to the reference temperature Tc (e.g., reference surface temperature) level. As a result of the identification, when the surface temperature value is greater than or equal to the reference temperature level (Yes in operation 603), the electronic device may perform operation 605, and when the surface temperature value is not greater than or equal to the reference temperature level (No in operation 603), the electronic device may perform operation 601. When the obtained surface temperature value is less than or equal to the first reference temperature level (e.g., 38 degrees which is the first reference temperature level of FIGS. 3A to 3C), the electronic device may maintain the currently set brightness (e.g., automatically set according to an application or a use environment or manually set by the user) without changing the display brightness (e.g., no limitation). When the obtained surface temperature value is a specific temperature (e.g., 47 degrees, which is greater than or equal to the second reference temperature level of FIGS. 3A to 3C), the electronic device may set the display brightness to a brightness control value (e.g., 150nt) specified equally for all illuminance levels without maximizing the display brightness.

[0097] In operation 605, the electronic device according to an embodiment may identify that it is necessary to control the brightness of the display (e.g., the display module 160 of FIG. 1) due to the increase in the temperature of the electronic device due to the external influence to a relatively large brightness (e.g., maximum brightness), and store the obtained surface temperature value Ts.

[0098] In operation 607, the electronic device according to an embodiment may identify whether the external temperature value is greater than the reference external temperature level. As a result of the identification, if the external temperature value is greater than the reference external temperature level, the electronic device may perform operation 609 and, if not, the electronic device may perform operation 611.

[0099] In operation 609 (Yes in operation 607), the electronic device according to an embodiment may set a relatively large brightness control value (e.g., maximum brightness control value) which is the first brightness control value based on the first brightness control information. The electronic device may obtain the brightness control value (e.g., setting value) included in the first brightness control information corresponding to the obtained external temperature value and set the obtained brightness control value as the first brightness control value. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value of the electronic device is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained external temperature value is the first external temperature level (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) greater than the reference external temperature level (e.g., 25 degrees), the electronic device may obtain a specified brightness control value (e.g., a luminance value of 600nt or 800nt) corresponding to the first surface temperature level and the first external temperature level and set the obtained brightness control value (e.g., 600nt or 800nt) as the first brightness control value. The external temperature levels and the surface temperature levels specified in the first brightness control information may be specified in advance through an experiment, and may be set to values or ranges other than the values or ranges set in FIG. 3A according to at least one of the device type, the use environment (e.g., outdoor, indoor, weather, or use time), or factors related to heat generation (e.g., the used application). When performing operation 609, the illuminance value may not be considered or it may be identified that the illuminance value is a level (e.g., the first illuminance level or second illuminance level of FIG. 3A) greater than the reference illuminance level (e.g., 3000lux).

[0100] In operation 611 (No in operation 607), the electronic device according to an embodiment may set the first brightness control value based on the second brightness control information. The electronic device may obtain the brightness control value (e.g., setting value) included in the second brightness control information corresponding to the obtained illuminance value and set the obtained brightness control value as the first brightness control value. For example, as illustrated in FIG. 3B, upon identifying that the obtained surface temperature value of the electronic device is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), and the obtained external temperature value is the reference external temperature level (e.g., 25 degrees), the electronic device may obtain a specified brightness control value (e.g., a luminance value of 400nt) corresponding to the first surface temperature level and the reference external temperature level and set the obtained brightness control value (e.g., 400nt) as the first brightness control value. The external temperature levels and the surface temperature levels specified in the second brightness control information may be specified in advance through an experiment, and may be set to values or ranges other than the values or ranges set in FIG. 3B according to at least one of the device type, the use environment (e.g., outdoor, indoor, weather, or use time), or factors related to heat generation (e.g., the used application). When performing operation 611, the illuminance value may not be considered or it may be identified that the illuminance value is a level (e.g., the first illuminance level or second illuminance level of FIG. 3B) greater than the reference illuminance level (e.g., 3000lux).

[0101] In operation 613, the electronic device according to an embodiment may identify whether the first brightness control value is less than the current brightness value. As a result of the identification, when the set brightness control value is less than the current brightness value, the electronic device may perform operation 615, and when not, the electronic device may perform operation 601.

[0102] In operation 615, the electronic device according to an embodiment may change the brightness of the display to the set first brightness control value.

[0103] The operation of setting the first brightness control value based on the surface temperature value and the illuminance value has been described above in connection with FIG. 5, and the operation of setting the first brightness control value based on the surface temperature value and the external temperature value has been described above in connection with FIG. 6. However, the electronic device according to an embodiment may set the first brightness control value based on all of the surface temperature value, the external temperature value, and the illuminance value. For example, as illustrated in FIG. 3A, upon identifying that the obtained surface temperature value is the first surface temperature level (e.g., 40 degrees or a temperature value of greater than 38 degrees to less than or equal to 40 degrees) greater than the first reference temperature level (e.g., 38 degrees), the obtained external temperature value is the first external temperature level (e.g., 30 degrees or a temperature value within a range of greater than 25 degrees to less than or equal to 30 degrees) greater than the reference external temperature level (e.g., 25 degrees), and the illuminance value is the first illuminance level (e.g., an illuminance value greater than 3000lux to less than 10000lux), the processor 120 may obtain a specified brightness control value (e.g., a luminance value of 600nt) corresponding to the first surface temperature level, the first external temperature level, and the first illuminance level and set the obtained brightness control value (e.g., 600nt) as the first brightness control value.

[0104] The electronic device according to an embodiment may pre-designate third brightness control information for setting the first brightness control value and store the third brightness control information in the memory 130. The electronic device may set the brightness control values respectively set at the set surface temperature levels corresponding to the first illuminance level (e.g., an illuminance value greater than 3000lux to less than or equal to 10000lux) at less than the second reference temperature (e.g., less than 47 degrees) in the third brightness control information to be higher by a set first ratio (e.g., 25% as compared with the reference illuminance level of FIG. 3C). The electronic device may set the brightness control values respectively set at the set surface temperature levels corresponding to the second illuminance level (e.g., an illuminance value greater than 10000lux) at less than the second reference temperature (e.g., less than 47 degrees) in the third brightness control information to be higher by a set second ratio (e.g., 50% as compared with the reference illuminance level of FIG. 3C). Here, in the third brightness control information, the brightness control values respectively set at the surface temperature levels may be set to have a higher ratio (e.g., a predetermined ratio specified by the user or through an experiment) than brightness control values (e.g., 400, 300, 200, and 150) specified corresponding to the reference brightness illuminance level (e.g., 3000lux or less) or the default brightness control values (e.g., 400, 300, 200, and 150) set in the second brightness control information of FIG. 3B.

[0105] When not changing to the first brightness control value, the electronic device according to an embodiment may set the bright control range to the previous range of 80% to 30% when heat is generated and, when changing to the first brightness control value, change (e.g., change by tuning) the brightness control range to 160% to 30% when heat is generated. For example, the brightness control range of 100% may be the first brightness control value when the brightness is set manually.

[0106] The electronic device according to an embodiment may continuously detect and learn the surface temperatures and external temperatures and set the first brightness control value (e.g., maximum brightness control value) automatically or at the usering to an embodiment may continuously detect and learn the sThe electronic device according to an embodiment may set the maximum brightness control value based on the external temperature value and / or the illuminance value according to a specific condition (e.g., execution of an application that generates much heat, during a time specified by the user, or other conditions due to factors related to heat generation in the electronic device) and change the brightness of the display to the set maximum brightness control value.

[0107] FIG. 7 is a view illustrating an example of measuring a consumption current and temperature according to the brightness of a display and an external temperature in an electronic device according to an embodiment.

[0108] Referring to FIG. 7, the electronic device according to an embodiment may identify there is an influence on mitigating surface heat generation according to a change in temperature and a change in current consumption according to changes in external temperature for each brightness values (e.g., brightness code) using experimental tables 701 and 702 obtained through an experiment. Here, the experimental tables 701 and 702 may be tables that record changes in current consumption and changes in temperature according to brightness values when the same application is used in the same scenario while changing the external temperature. It may be identified based on the resultant values in the experimental tables 701 and 702 that if the external temperature increases, reducing brightness does not have the effect of mitigating heat generation and that when heat generation increases due to an actual external factor, reducing internal current consumption in the electronic device may not trade off influence by the external factor. Accordingly, it may be identified that in an environment where the external temperature is higher than a specific temperature or the temperature of the electronic device may be increased by the illuminance value (e.g., direct sunlight), normal control may reduce only visibility, and although only a control device is applied for stabilization at a higher temperature, the heat generation control effect does not make a significant difference.

[0109] Since the conventional electronic device controls relatively high brightness (e.g., maximum brightness) only with respect to the temperature of the electronic device without considering the external environment, if the temperature of the electronic device is increased when influenced by external direct sunlight, brightness is proposed according to a predetermined table only for the purpose of heat generation control. As the conventional electronic device controls the brightness of the display without considering the external environment, the brightness is limited by heat generation, deteriorating the visibility of the display and hence causing inconvenience in use of the electronic device.

[0110] The disclosure may provide an electronic device and a method for controlling the brightness of a display based on external temperatures and / or illuminance values considering the surface temperature of the electronic device and external context.

[0111] As in the method for operating the electronic device according to an embodiment described in connection with FIGS. 4 to 6, the electronic device may set a relatively large brightness control value (e.g., maximum brightness control value) based on the surface temperature, external temperature, and / or illuminance value and change the brightness of the display to the relatively large brightness control value as set, thereby minimizing influence by surface heat generation and increasing visibility. Thus, it is possible to mitigate inconvenience in use of the electronic device by the user due to deteriorated visibility during heat generation control operation. Other various effects may be provided directly or indirectly in the disclosure.

[0112] Each operation in the method for operating an electronic device according to an embodiment described in connection with FIGS. 4 to 6 may be performed sequentially, but is not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel or other operations may be added.

[0113] According to an embodiment, a method for operating an electronic device (e.g., the electronic device 101 of FIGS. 1 and 2) may comprise obtaining a surface temperature value of the electronic device using at least one temperature sensor (e.g., at least one temperature sensor included in the sensor module (176) of FIGS. 1) of the electronic device.

[0114] According to an embodiment, the method may comprise setting a first brightness control value (e.g., maximum brightness control value) of a display (e.g., the display module (160) of FIGS. 1) of the electronic device using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor (e.g., at least one illuminance sensor included in the sensor module (176) of FIGS. 1) based on the surface temperature value being greater than or equal to a reference surface temperature level.

[0115] According to an embodiment, the method may comprise changing a brightness of the display based on the first brightness control value. By taking account of the external temperature, relatively large brightness control value can be set, thereby minimizing influence by surface heat generation and increasing visibility of the display, thus to mitigate inconvenience in use of the electronic device by the user during heat generation control operation.

[0116] According to an embodiment, the method may further comprise storing the surface temperature value based on the surface temperature value being greater than or equal to the reference surface temperature level.

[0117] According to an embodiment, setting the first brightness control value of the display may include setting the first brightness control value using first brightness control information stored in memory (e.g., the memory (130) of FIG. 1) of the electronic device.

[0118] According to an embodiment, setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value may include identifying a first setting value corresponding to the surface temperature value and the illuminance value in first brightness control information stored the memory and setting the first brightness control value as the identified first setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level. According to an embodiment, the first setting value may be a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the first brightness control information.

[0119] According to an embodiment, setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value may include identifying a second setting value corresponding to the surface temperature value and the illuminance value in second brightness control information stored the memory and setting the brightness of the display as the identified second setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being less than or equal to the reference illuminance level. According to an embodiment, the second setting value may be a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the second brightness control information. According to an embodiment, the first brightness control value may be a maximum brightness control value.

[0120] According to an embodiment, the first brightness control information may include setting values corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, may be set in a table form. According to an embodiment, the second brightness control information may include setting values corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, may be set in a table form.

[0121] According to an embodiment, setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value may include identifying a third setting value corresponding to the surface temperature value and the external temperature value in the first brightness control information and setting the first brightness control value as the identified third setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being greater than a reference external temperature level. According to an embodiment, the third setting value may be a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the first brightness control information.

[0122] According to an embodiment, setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value may include identifying a fourth setting value corresponding to the surface temperature value and the external temperature value in second brightness control information, and setting the brightness of the display as the identified fourth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being less than or equal to the reference external temperature level. According to an embodiment, the fourth setting value may be a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the second brightness control information.

[0123] According to an embodiment, changing the brightness of the display may include obtaining a current brightness value of the display and changing the brightness of the display into the first brightness control value based on the first brightness control value being less than the current brightness value.

[0124] According to an embodiment, the method may further comprise maintaining the brightness of the display without changing the brightness of the display based on the first brightness control value being greater than or equal to the current brightness value.

[0125] According to an embodiment, setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value may include identifying a fifth setting value corresponding to the surface temperature value and the illuminance value or the external temperature value in third brightness control information stored the memory, and setting the first brightness control value as the identified fifth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level or the external temperature value being greater than a reference external temperature level . According to an embodiment, the fifth setting value may be a setting value corresponding to the surface temperature value and the illuminance value or the external temperature value among setting values included in the third brightness control information.

[0126] According to an embodiment, the third brightness control information may include setting values specified corresponding to a first illuminance level specified and corresponding to each of surface temperature levels specified, and the brightness control values corresponding to the first illuminance level may be set to be higher by a first ratio than default brightness control values. According to an embodiment, the third brightness control information may include setting values specified corresponding to a second illuminance level specified and corresponding to each of the surface temperature levels specified, and the setting values corresponding to the second illuminance level may be specified to be higher by a second ratio than the default brightness control values.

[0127] According to an embodiment, the method may further comprise maintaining the brightness of the display without changing the brightness of the display based on the surface temperature value being less than the reference surface temperature level.

[0128] According to an embodiment, a non-transitory storage medium storing one or more programs may include instructions that, when executed by at least one processor (e.g., the processor 120 of FIG. 1) of an electronic device (e.g., the electronic device 101 of FIGS. 1 and 2), cause the electronic device to obtain a surface temperature value of the electronic device using at least one temperature sensor (e.g., at least one temperature sensor included in the sensor module 176 of FIG. 1) of the electronic device, set a first brightness control value of a display (e.g., the display module 160 of FIG. 1) of the electronic device using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor (e.g., at least one illuminance sensor included in the sensor module 176 of FIG. 1)based on the surface temperature value being greater than or equal to a reference surface temperature level, and change a brightness of the display based on the first brightness control value.

[0129] The embodiments disclosed herein are proposed for description and understanding of the disclosed technology and does not limit the scope of the disclosure. Accordingly, the scope of the disclosure should be interpreted as including all changes or various embodiments based on the technical spirit of the disclosure.

[0130] The electronic device according to various embodiments of the disclosure may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above.

[0131] It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as "A or B," "at least one of A and B," "at least one of A or B," "A, B, or C," "at least one of A, B, and C," and "at least one of A, B, or C," may include all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as "1st" and "2nd," or "first" and "second" may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term "operatively" or "communicatively", as "coupled with," "coupled to," "connected with," or "connected to" another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element.

[0132] As used herein, the term "module" may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, "logic," "logic block," "part," or "circuitry". A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC).

[0133] Various embodiments as set forth herein may be implemented as software (e.g., the program 140) including one or more instructions that are stored in a storage medium (e.g., internal memory 136 or external memory 138) that is readable by a machine (e.g., the electronic device 101). For example, a processor (e.g., the processor 120) of the machine (e.g., the electronic device 101) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Wherein, the term "non-transitory" simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium.

[0134] According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program products may be traded as commodities between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., Play Store ™< ), or between two user devices (e.g., smartphones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer's server, a server of the application store, or a relay server.

[0135] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities. Some of the plurality of entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.

Claims

1. An electronic device (101) comprising: at least one temperature sensor; at least one illuminance sensor; a display (160); memory (130); and at least one processor (120), wherein the memory (130) stores instructions that, when executed by the at least one processor (120), cause the electronic device (101) to: obtain a surface temperature value of the electronic device (101) using the at least one temperature sensor ; set a first brightness control value of the display (160) using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level; and change a brightness of the display (160) based on the first brightness control value.

2. The electronic device of claim 1, wherein the memory (130) stores instructions that, when executed by the at least one processor (120), cause the electronic device (101) to: store the surface temperature value based on the surface temperature value being greater than or equal to the reference surface temperature level, and wherein the external temperature value is estimated using an equation modeling technique, machine learning or a temperature table stored in the memory 130 based on different temperature difference values. when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a first setting value corresponding to the surface temperature value and the illuminance value in first brightness control information stored in the memory (130), and set the first brightness control value as the identified first setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level, wherein the first setting value may be a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the first brightness control information; and identify a second setting value corresponding to the surface temperature value and the illuminance value in second brightness control information stored in the memory 130), and set the brightness of the display (160) as the identified second setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being less than or equal to the reference illuminance level, wherein the second setting value is a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the second brightness control information. According to an embodiment, and wherein the first brightness control value is a maximum brightness control value.

3. The electronic device of claim 1 or claim 2, wherein the first brightness control information includes setting values specified corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form, and wherein the second brightness control information includes setting values specified corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form.

4. The electronic device of any one of claims 1 to 3, wherein the memory (130) stores instructions that, when executed by the at least one processor (120), cause the electronic device (101) to: when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a third setting value corresponding to the surface temperature value and the external temperature value in the first brightness control information and set the first brightness control value as the third setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being greater than a reference external temperature level, wherein the third setting value is a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the first brightness control information; identify a fourth setting value corresponding to the surface temperature value and the external temperature value in second brightness control information, and set the brightness of the display (160) as the identified fourth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being less or equal than the reference external temperature level, wherein the fourth setting value is a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the second brightness control information; obtain a current brightness value of the display (160); change the brightness of the display (160) into the first brightness control value based on the first brightness control value being less than the current brightness value; and maintain the brightness of the display (160) without changing the brightness of the display (160) based on the first brightness control value being greater than or equal to the current brightness value.

5. The electronic device of any one of claims 1 to 4, wherein the memory (130) stores instructions that, when executed by the at least one processor (120), cause the electronic device (101) to: when setting the first brightness control value of the display using the estimated at least one of the external temperature value or the obtained illuminance value, identify a fifth setting value corresponding to the surface temperature value and the illuminance value or the external temperature value in third brightness control information stored the memory, and set the first brightness control value as the identified fifth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level or the external temperature value being greater than a reference external temperature level, wherein the fifth setting value is a setting value corresponding to the surface temperature value and the illuminance value or the external temperature value among setting values included in the third brightness control information; and maintain the brightness of the display (160) without changing the brightness of the display (160) based on the surface temperature value being less than the reference surface temperature level, wherein the third brightness control information includes setting values specified corresponding to a first illuminance level specified and corresponding to each of surface temperature levels specified, and wherein the setting values corresponding to the first illuminance level are specified to be higher by a first ratio than default brightness control values, and wherein the third brightness control information includes setting values specified corresponding to a second illuminance level specified and corresponding to each of the surface temperature levels specified, and wherein the setting values corresponding to the second illuminance level are specified to be higher by the first ratio than the default brightness control values.

6. A method for operating an electronic device (101), the method comprising: obtaining a surface temperature value of the electronic device (101) using at least one temperature sensor of the electronic device (101); setting a first brightness control value of a display (160) of the electronic device (101) using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level; and changing a brightness of the display (160) based on the first brightness control value.

7. The method of claim 6, further comprising: storing the surface temperature value based on the surface temperature value being greater than or equal to the reference surface temperature level, wherein the external temperature value is estimated using an equation modeling technique, machine learning or a temperature table stored in the memory 130 based on different temperature difference values.

8. The method of claim 6 or 7, wherein setting the first brightness control value of the display (160) using the estimated at least one of the external temperature value or the obtained illuminance value includes: identifying a first setting value corresponding to the surface temperature value and the illuminance value in first brightness control information stored the memory and setting the first brightness control value as the identified first setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level, wherein the first setting value is a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the first brightness control information; and identifying a second setting value corresponding to the surface temperature value and the illuminance value in second brightness control information stored the memory and setting the brightness of the display (160) as the identified second setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being less than or equal to the reference illuminance level, wherein the second setting value is a setting value corresponding to the surface temperature value and the illuminance value among setting values included in the second brightness control information. According to an embodiment, and wherein the first brightness control value is a maximum brightness control value.

9. The method of any one of claims 6 to 8, wherein the first brightness control information includes setting values corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form, and wherein the second brightness control information includes setting values corresponding to at least one specified external temperature level or at least one specified illuminance level and corresponding to each of surface temperature levels, and is set in a table form.

10. The method of any one of claims 6 to 9, wherein setting the first brightness control value of the display (160) using the estimated at least one of the external temperature value or the obtained illuminance value includes: identifying a third setting value corresponding to the surface temperature value and the external temperature value in the first brightness control information and setting the first brightness control value as the identified third setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being greater than a reference external temperature level, wherein the third setting value is a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the first brightness control information; and identifying a fourth setting value setting the brightness of the display (160) as a brightness control value included in second brightness control information corresponding to the surface temperature value and the external temperature value in second brightness control information and setting the brightness of the display (160) as the identified fourth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the external temperature value being less than or equal to the reference external temperature level, wherein the fourth setting value is a setting value corresponding to the surface temperature value and the external temperature value among setting values included in the second brightness control information.

11. The method of any one of claims 6 to 10, wherein changing the brightness of the display (160) includes: obtaining a current brightness value of the display (160); and changing the brightness of the display (160) into the first brightness control value based on the first brightness control value being less than the current brightness value.

12. The method of any one of claims 6 to 11, further comprising maintaining the brightness of the display (160) without changing the brightness of the display (160) based on the first brightness control value being greater than or equal to the current brightness value.

13. The method of any one of claims 6 to 12, wherein setting the first brightness control value of the display (160) using the estimated at least one of the external temperature value or the obtained illuminance value includes: identifying a fifth setting value corresponding to the surface temperature value and the illuminance value or the external temperature value in third brightness control information stored the memory, setting the first brightness control value as the identified fifth setting value based on the surface temperature value being greater than or equal to the reference surface temperature level and the illuminance value being greater than a reference illuminance level or the external temperature value being greater than a reference external temperature level, wherein the fifth setting value is a setting value corresponding to the surface temperature value and the illuminance value or the external temperature value among setting values included in the third brightness control information, wherein the third brightness control information includes setting values specified corresponding to a first illuminance level specified and corresponding to each of surface temperature levels specified, and wherein the brightness control values corresponding to the first illuminance level are set to be higher by a first ratio than default brightness control values, and wherein the third brightness control information includes brightness control values corresponding to a second illuminance level set corresponding to each of the surface temperature levels, and wherein the setting values corresponding to the second illuminance level are specified to be higher by a second ratio than the default brightness control values.

14. The method of any one of claims 6 to 13, further comprising maintaining the brightness of the display (160) without changing the brightness of the display (160) based on the surface temperature value being less than the reference surface temperature level.

15. A non-transitory storage medium storing one or more programs including instructions that, when executed by at least one processor (120) of an electronic device (101), cause the electronic device (101) to: obtain a surface temperature value of the electronic device (101) using at least one temperature sensor of the electronic device (101); set a first brightness control value of a display (160) of the electronic device (101) using at least one of an external temperature value estimated by the electronic device or an illuminance value obtained by the at least one illuminance sensor based on the surface temperature value being greater than or equal to a reference surface temperature level; and change a brightness of the display (160) based on the first brightness control value.

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