WO2024019295A1 - Power source supply method, and electronic device for performing method - Google Patents

Abstract

A power source supply method, and an electronic device for performing the method are disclosed. The electronic device according to one embodiment may comprise: a display module; a converter, which converts a first input power source so as to supply a second input power source to a driver; the driver, which converts the second input power source so as to supply an output power source to the display module; a processor; and a memory which is electrically connected to the processor, and which stores instructions executed by means of the processor. The processor can determine the voltage level of the second input power source on the basis of the voltage level of the output power source. The processor can control the converter on the basis of the determined voltage level of the second input power source.

Description

Power supply method and electronic device performing the method

The disclosure below relates to a power supply method for supplying power to a display module and an electronic device that performs the method.

For the operation of the display, the output voltage of the driver input to the display is variable, but the input voltage input to the driver may be of a constant voltage.

The size of the voltage input to the driver for operating the display is constant, and a voltage of the size input from a battery, etc. may be input, or a voltage of the size converted using a preregulator may be input.

An electronic device according to an embodiment includes a display module, a converter that converts first input power to supply second input power to a driver, and the driver that converts the second input power to supply output power to the display module. , may include a processor and a memory electrically connected to the processor and storing instructions executed by the processor. The processor may determine the voltage level of the second input power source based on the voltage level of the output power source. The processor may control the converter based on the determined voltage level of the second input power.

An electronic device according to an embodiment includes a display module including a display that can be changed into a folded or unfolded state, a converter that converts first input power and supplies second input power to a driver, and the second input power. It may include the driver that supplies output power to the display module, a processor, and a memory that is electrically connected to the processor and stores instructions executed by the processor. The processor may determine the voltage level of the second input power based on the state of the display and the voltage level of the output power. The processor may control the converter based on the determined voltage level of the second input power.

A power supply method according to an embodiment includes an operation in which a converter converts first input power to supply second input power to a driver, and the driver converts the second input power to supply output power to a display module. It may include an operation of determining the voltage level of the second input power source based on the voltage level of the output power source, and an operation of controlling the converter based on the determined voltage level of the second input power source.

1 is a block diagram of an electronic device in a network environment, according to various embodiments.

2 is a block diagram of a display module, according to various embodiments.

FIG. 3 is a diagram illustrating an operation of an electronic device controlling a converter according to an embodiment.

FIG. 4 is a diagram illustrating an operation of an electronic device controlling a second input voltage using a feedback circuit, according to an embodiment.

FIG. 5 is a diagram illustrating an operation of an electronic device controlling a second input voltage by inputting a control signal to a converter, according to an embodiment.

Figure 6 is a diagram showing the operation of a power supply method according to an embodiment.

FIGS. 7A, 7B, and 7C are diagrams showing areas where images are output to the display module according to the operation mode of the electronic device according to one embodiment.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. In the description with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted.

As used herein, “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 “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof.

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

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, the processor 120 stores commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes a main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a secondary processor 123, the secondary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, co-processor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

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

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

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

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. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

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

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

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

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

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

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

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 is 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., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., legacy It may communicate with an external electronic device 104 through a telecommunication network such as a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional 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., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

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

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

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external electronic devices 102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 must perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or 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 healthcare) based on 5G communication technology and IoT-related technology.

Figure 2 is a block diagram 200 of the display module 160, according to various embodiments. Referring to FIG. 2, the display module 160 may include a display 210 and a display driver IC (DDI) 230 for controlling the display 210. The DDI 230 may include an interface module 231, a memory 233 (eg, buffer memory), an image processing module 235, or a mapping module 237. For example, the DDI 230 transmits image information, including image data or an image control signal corresponding to a command for controlling the image data, to other components of the electronic device 101 through the interface module 231. It can be received from.

According to one embodiment, image information is stored in the processor 120 (e.g., main processor 121 (e.g., application processor) or the auxiliary processor 123 (e.g., graphics processing) that operates independently of the functions of the main processor 121. The DDI 230 can communicate with the touch circuit 250 or the sensor module 176, etc. through the interface module 231.

Additionally, the DDI 230 may store at least some of the received image information in the memory 233, for example, on a frame basis. For example, the image processing module 235 may pre-process or post-process at least a portion of the image data (e.g., adjust resolution, brightness, or size) based on at least the characteristics of the image data or the characteristics of the display 210. can be performed. The mapping module 237 may generate a voltage value or current value corresponding to the image data pre- or post-processed through the image processing module 135.

According to one embodiment, the generation of the voltage value or the current value is based on at least the properties of the pixels of the display 210 (e.g., the arrangement of the pixels (RGB stripe or pentile structure), or the size of each subpixel). It can be done on some basis. At least some pixels of the display 210 are, for example, driven based at least in part on the voltage value or the current value to display visual information (e.g., text, image, or icon) corresponding to the image data on the display 210. It can be displayed through .

According to one embodiment, the display module 160 may further include a touch circuit 250. The touch circuit 250 may include a touch sensor 251 and a touch sensor IC 253 for controlling the touch sensor 251. For example, the touch sensor IC 253 may control the touch sensor 251 to detect a touch input or a hovering input for a specific position of the display 210. For example, the touch sensor IC 253 may detect a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or charge amount) for a specific position of the display 210. The touch sensor IC 253 may provide information (e.g., location, area, pressure, or time) about the detected touch input or hovering input to the processor 120. According to one embodiment, at least a portion of the touch circuit 250 (e.g., touch sensor IC 253) is disposed as part of the display driver IC 230, the display 210, or outside the display module 160. It may be included as part of other components (e.g., auxiliary processor 123).

According to one embodiment, the display module 160 may further include at least one sensor (eg, a fingerprint sensor, an iris sensor, a pressure sensor, or an illumination sensor) of the sensor module 176, or a control circuit therefor. In this case, the at least one sensor or a control circuit therefor may be embedded in a part of the display module 160 (eg, the display 210 or the DDI 230) or a part of the touch circuit 250. For example, when the sensor module 176 embedded in the display module 160 includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor records biometric information associated with a touch input through a portion of the display 210. (e.g. fingerprint image) can be acquired. For another example, when the sensor module 176 embedded in the display module 160 includes a pressure sensor, the pressure sensor may acquire pressure information associated with a touch input through part or the entire area of the display 210. You can. According to one embodiment, the touch sensor 251 or the sensor module 176 may be disposed between pixels of a pixel layer of the display 210, or above or below the pixel layer.

FIG. 3 is a diagram illustrating an operation of an electronic device (eg, the electronic device 101 of FIG. 1 ) controlling the converter 310 according to an embodiment.

Referring to FIG. 3, the electronic device 101 according to one embodiment includes a converter 310, a driver 320 (e.g., the display driver IC 230 of FIG. 2), a display module 160, and a processor 120. It may include at least one of, or a combination thereof.

For example, the converter 310 may convert the first input power and supply the second input power to the driver 320. For example, the converter 310 may receive the first input power from the battery of the electronic device 101 (eg, the battery 189 in FIG. 1). For example, the converter 310 may receive first input power from an external source.

For example, the driver 320 may convert the second input power and supply output power to the display module 160. For example, the driver 320 may convert the second input power and supply the first output power and the second output power to the display module 160.

For example, the driver 320 may supply different sizes of the first output voltage VDD of the first output power and the second output voltage VSS of the second output power to the display module 160. For example, the size of the second output voltage VSS may be determined according to the operation of the display module 160. For example, the size of the second output voltage VSS may be determined depending on the size or ratio of the area where the image is output from the display module 160, the brightness setting of the display module 160, the current used, etc.

For example, the processor 120 of the electronic device 101 may determine the voltage level of the second input power source based on the voltage level of the output power source. For example, the processor 120 may determine the voltage level of the second input power source based on the level of the voltage level of the second output power source. For example, the processor 120 may determine the voltage level of the second input power source based on the level of the second output voltage VSS.

For example, the processor 120 of the electronic device 101 may control the converter 310 based on the determined voltage level of the second input power. For example, the processor 120 of the electronic device 101 may control the voltage level of the second input power output from the converter 310 by controlling the feedback circuit included in the converter 310. For example, the processor 120 of the electronic device 101 controls the converter controller included in the converter 310 through SMBUS (system management bus) to determine the voltage level of the second input power output from the converter 310. can be controlled.

For example, the processor 120 may control the converter 310 so that the magnitude of the voltage of the output power and the magnitude of the voltage of the second input power have a positive correlation. For example, the processor 120 may control the converter 310 so that the smaller the second output voltage VSS is, the smaller the voltage of the second input power source is. For example, the processor 120 may control the converter 310 so that as the second output voltage VSS increases, the voltage of the second input power supply increases.

Table 1 below is a table showing the power efficiency of the electronic device 101 according to an embodiment. For example, Table 1 shows power efficiency when the electronic device 101 controls the converter 310 and adjusts the size of the second input power according to one embodiment.

Referring to Table 1 below, when the output current (e.g., the magnitude of the current of the second output power source) is 800 mA and the magnitude of the voltage (e.g., VSS in Table 2) of the second output power source is 1 V, the converter (310) ), it can be seen that when the second input power of 6V is output (e.g., the second input voltage of 6V in Table 2), the integrated efficiency is the highest at 87.0%. It can be seen that the integrated efficiency when there is no converter 310 is 82.5%, and when the converter 310 outputs the second input power of 9V, the integrated efficiency is 86.5%. In Table 1, the integrated efficiency is the sum of the power conversion efficiencies of the converter 310 and the driver 320, and can be calculated as (efficiency of the converter 310)

In Table 1 below, when the output current is 800mA, the voltage of the second output power is 7V, and the converter 310 outputs the second input power of 9V, the integrated efficiency is the highest at 85.5%. You can check that. It can be seen that the integrated efficiency when there is no converter 310 is 84.0%, and when the converter 310 outputs the second input power of 9V, the integrated efficiency is 82.3%.

From Table 1 above, it can be seen that when the output current is 100mA and the magnitude of the second output voltage is 1V, the integration efficiency is highest when the magnitude of the second input voltage is 6V. When the output current is 100mA and the magnitude of the second output voltage is 7V, it can be confirmed that the integration efficiency is highest when the magnitude of the second input voltage is 9V.

In the case where the output current is 100 mA, it can be seen that, similarly to the case where the output current is 800 mA, the voltage level of the second input power source that maximizes integration efficiency varies depending on the size of the second output voltage.

As above, when the magnitude of the second output voltage is 1V, the integration efficiency is highest when the voltage magnitude of the second input power output from the converter 310 is 6V, but when the magnitude of the second output voltage is 7V, It can be seen that the integration efficiency is highest when the voltage level of the second input power output from the converter 310 is 9V.

In Table 1, it can be seen that the integration efficiency is high when the voltage of the second output power is large (e.g., VSS 7V) and the voltage of the second input power is large (e.g., the second input voltage is 9V). For example, the processor 120 of the electronic device 101 controls the converter 310 so that the magnitude of the voltage of the second output power and the magnitude of the voltage of the second input power have a positive correlation, thereby increasing efficiency. It can be improved.

As shown in Table 1 above, the integrated efficiency of power supplied to the display module 160 may vary depending on the size of the second output voltage. In Table 1 above, when the magnitude of the second output voltage varies, the integration efficiency may vary depending on the magnitude of the second input voltage input to the driver 320.

According to one embodiment, the electronic device 101 controls the voltage magnitude of the second input power according to the magnitude of the second output voltage, thereby increasing the efficiency of the power supplied by the electronic device 101 to the display module 160. It can be improved.

Table 2 below is a table showing the power consumption of the electronic device 101 according to one embodiment. Referring to Table 2, when the voltage level of the second input power output from the converter 310 is fixed (e.g., 9V), the power efficiency during mobilemark operation is 83%, and the display 210 loss ( You can see that 0.4W (display loss), or 7% of total power consumption, is consumed. In Table 2, it can be seen that when the voltage level of the second input power source is fixed, the power efficiency in the idle state is 80%, and the loss of the display 210 consumes 0.35W and 14% of the total power consumption. .

In Table 2 below, it can be seen that when the size of the second input voltage is variable, the power efficiency when operating mobilemark is 87%, and 0.3W is consumed due to display 210 loss, and 5% of total power consumption is consumed. You can. In Table 2, it can be seen that when the voltage size of the second input power source is variable, the power efficiency in the idle state is 83%, and 0.28W is consumed due to the loss of the display 210, or 12% of the total power consumption. .

Referring to Table 2 above, the electronic device 101 according to one embodiment can improve power efficiency and reduce power consumption by varying the size of the second input voltage output from the converter 310.

In Table 2 above, varying the second input voltage means that the electronic device 101 determines the magnitude of the second input voltage based on the output power and/or the voltage magnitude of the second output power, and determines the magnitude of the second input voltage. This may mean controlling the converter 310 according to the size of the input voltage.

For example, the display module 160 may include a display 210 that can be changed into a folded or unfolded state. For example, depending on the operation mode of the electronic device 101, the state of the display 210 may be set to a folded state or an unfolded state.

The area where the image is output to the display 210 may be determined depending on the operation mode of the electronic device 101. For example, depending on the operation mode of the electronic device 101, the area where the image is output and the area where the image is not displayed on the display 210 may be determined, and the ratio of the area where the image is output may be determined.

For example, the electronic device 101 may determine the output power supplied to the display module 160 based on the area where the image is output on the display 210. The electronic device 101 may determine the magnitude of the voltage of the first output power and the second output power supplied from the driver 320 to the display module 160 according to the area where the image is output.

For example, the size of the area where the image is output from the display 210 or the ratio of the area where the image is output is determined by the voltage of the first output power and the second output power supplied from the driver 320 to the display module 160. There can be a positive correlation with size.

For example, when the area where the image is output on the display 210 is large or the ratio of the area where the image is output is large, the electronic device 101 may use the first signal supplied from the driver 320 to the display module 160. The magnitude of the voltage of the output power and the second output power can be determined to be large.

For example, when the area where the image is output on the display 210 is large or the ratio of the area where the image is output is large, the electronic device 101 determines the magnitude of the voltage of the second output power to be large, and The voltage level of the second input power may be determined according to the voltage level of the output power.

FIG. 4 is a diagram illustrating an operation of an electronic device (e.g., the electronic device 101 of FIG. 1 ) according to an embodiment to control a second input voltage using a feedback circuit. Overlapping descriptions among the descriptions of the electronic device 101 in FIGS. 1 to 3 may be omitted from the description of FIG. 4 .

Referring to FIG. 4, the electronic device 101 according to an embodiment may include at least one of a converter 310, a driver 320, and a comparator 330, or a combination thereof.

Referring to FIG. 4, the converter 310 according to an embodiment may include at least one of a converter controller 311, a buck converter 312, a plurality of resistors 313, 314, and 315, or a switch 316. there is.

For example, the converter controller 311 may control the operation of the buck converter 312 to control the second input power output from the buck converter 312. For example, the buck converter 312 may convert the first input power input to the converter 310 and output the second input power.

For example, the connection relationship of the plurality of resistors 313, 314, and 315 may be determined according to the operation of the switch 316. For example, when the switch 316 in FIG. 4 is turned on, the resistor 314 and resistor 315 may be connected in parallel, and the resistors 314 and 315 connected in parallel may be connected in series with the resistor 313. there is. For example, when the switch 316 in FIG. 4 is turned off, the resistor 313 and resistor 314 may be connected in series.

For example, the comparator 330 may compare a preset reference voltage Vref (e.g., 3V, 4V, 5V, etc.) with the voltage magnitude of the second output power (e.g., the second output voltage VSS in FIG. 4). there is. For example, when the magnitude of the second output voltage VSS is greater than the reference voltage Vref, the comparator 330 may supply a high signal to the switch 316. For example, when the magnitude of the second output voltage VSS is smaller than the reference voltage Vref, the comparator 330 may supply a low signal to the switch 316.

For example, when a high signal is input to the switch 316, the switch 316 may be turned on, and when a low signal is input to the switch 316, the switch 316 may be turned off.

For example, as shown in FIG. 4, the feedback terminal of the converter controller 311 may be connected to one side where the resistor 313, resistor 314, and resistor 315 are connected. For example, the converter controller 311 may control the voltage level of the second input power source according to the size of the signal input to the feedback terminal.

For example, when the voltage level of the signal input to the feedback terminal is small, the converter controller 311 can control the buck converter 312 to increase the voltage level of the second input power output from the buck converter 312. there is.

For example, when the voltage magnitude of the signal input to the feedback terminal is large, the converter controller 311 controls the buck converter 312 so that the voltage magnitude of the second input power output from the buck converter 312 is decreased. You can.

The operation of the converter controller 311 to control the voltage level of the second input power output from the buck converter 312 according to the size of the signal or power input to the feedback terminal is illustrative and is not limited to the above-described example. No.

For example, when the magnitude of the second output voltage VSS is greater than the reference voltage Vref, the comparator 330 may supply a high signal to the switch 316, so that the switch 316 may be turned on. Since the resistor 314 and the resistor 315 are connected in parallel, the voltage magnitude of the signal input to the feedback terminal of the converter controller 311 can be reduced. The converter controller 311 may control the buck converter 312 so that the voltage level of the second input power output from the buck converter 312 increases.

For example, when the magnitude of the second output voltage VSS is greater than the reference voltage Vref, the voltage magnitude of the second input power output from the converter 310 may increase.

For example, when the magnitude of the second output voltage VSS is smaller than the reference voltage Vref, the comparator 330 supplies a low signal to the switch, so that the switch can be turned off. When the switch is turned off, the resistor 315 is not connected, so the voltage magnitude of the signal input to the feedback terminal of the converter controller 311 may increase. The converter controller 311 may control the buck converter 312 so that the voltage level of the second input power output from the buck converter 312 is reduced.

For example, when the magnitude of the second output voltage VSS is smaller than the reference voltage Vref, the voltage magnitude of the second input power output from the converter 310 may become smaller.

As above, when the second output voltage VSS is greater than the reference voltage Vref, the electronic device 101 may control the converter 310 to increase the voltage level of the second input power. When the second output voltage VSS is smaller than the reference voltage Vref, the electronic device 101 may control the converter 310 so that the voltage level of the second input power supply becomes smaller.

For example, the driver 320 may convert the second input power and output output power. The output power may include a first output power and a second output power.

FIG. 4 shows one example among various embodiments, and the electronic device 101 may include a plurality of comparators 330. For example, the converter 310 includes a plurality of resistors and a plurality of switches, and the plurality of switches can be turned on and off based on the plurality of comparators 330.

For example, the plurality of comparators 330 may compare the magnitude of the second output voltage VSS using a plurality of reference voltages Vref1, Vref2, ..., Vrefn. For example, the plurality of comparators may determine whether the second output voltage VSS belongs to one of a plurality of sections divided according to a plurality of reference voltages. For example, comparator 1 is a High signal when the second output voltage VSS is less than the reference voltage Vref1, comparator 2 is a High signal when the second output voltage VSS is more than the reference voltage Vref1 and less than the reference voltage Vref2, ..., comparator n+ 1, when the second output voltage VSS is higher than the reference voltage Vrefn, a high signal can be supplied to each corresponding switch.

As in the example above, the electronic device 101 may control the magnitude of the second input voltage output from the converter 310 by comparing the second output voltage VSS with a plurality of sections divided according to a plurality of reference voltages. there is.

For example, the size of the signal input to the feedback terminal of the converter controller 311 may be determined according to the operation of the switch corresponding to each of the plurality of comparators 330.

FIG. 5 is a diagram illustrating an operation in which an electronic device (e.g., the electronic device 101 of FIG. 1 ) inputs a control signal to the converter 310 to control the second input voltage, according to an embodiment.

Overlapping descriptions among the descriptions of the electronic device 101 in FIGS. 1 to 4 may be omitted from the description of FIG. 5 .

Referring to FIG. 5 , the electronic device 101 according to an embodiment may include at least one of a converter 310, a driver 320, a processor 120, or an analog digital converter (ADC) 340.

For example, the ADC 340 may convert the voltage level of the second output power (e.g., the second output voltage VSS) into a digital signal. For example, the ADC 340 may convert the digital signal into a digital signal of 0V or more and 3.3V or less depending on the size of the second output voltage VSS in the range of -9V or more and -1V or less. For example, when the second output voltage VSS is a negative voltage, the magnitude of the second output voltage may mean the absolute value of the voltage magnitude.

For example, the processor 120 may input a control signal to the converter controller 311 according to the signal converted by the ADC 340. For example, the control signal may be input to the SMBUS Logic terminal of the converter controller 311 via SMBUS.

For example, the converter controller 311 may control the buck converter 312 according to a control signal received from the processor 120. For example, as the voltage level of the second output voltage becomes larger, the buck converter 312 can output the second input power with a larger voltage level.

For example, when the level of the second output voltage VSS is -9V, the ADC 340 can convert the second output voltage VSS into a digital signal of 3.3V. The processor 120 may transmit a signal for controlling the magnitude of the second input voltage to the converter 310 based on the 3.3V digital signal. For example, the converter controller 311 may control the buck converter 312 to increase the size of the second input voltage output from the buck converter 312 based on the signal received from the processor 120. .

For example, when the magnitude of the second output voltage VSS is -1V, the ADC 340 may convert the second output voltage VSS into a digital signal of 0.1V. The processor 120 may transmit a signal for controlling the magnitude of the second input voltage to the converter 310 based on a digital signal of 0.1V. For example, the converter controller 311 may control the buck converter 312 to reduce the size of the second input voltage output from the buck converter 312 based on the signal received from the processor 120. .

In FIGS. 4 and 5 above, an example of converting the first input power to the second input power using the buck converter 312 is shown, but FIGS. 4 and 5 show one embodiment among various embodiments. Correspondingly, various known conversion circuits other than the buck converter 312 shown in FIGS. 4 and 5 may be applied to convert the input power.

Figure 6 is a diagram showing the operation of a power supply method according to an embodiment.

Referring to FIG. 6, an electronic device (e.g., the electronic device 101 of FIG. 1) according to an embodiment converts the first input power in operation 610 and converts the second input power to a driver (e.g., FIG. 3). It can be supplied with a driver 320). For example, a converter (e.g., converter 310 in FIG. 3) may include a converter controller (e.g., converter controller 311 in FIG. 4) and a buck converter (e.g., buck converter 312 in FIG. 4). there is. The converter controller 311 may control the buck converter 312 so that the converter 310 outputs the second input power.

For example, in operation 620, the electronic device 101 may convert the second input power to supply output power to a display module (eg, the display module 160 of FIG. 1). For example, the driver 320 may convert the second input power and supply the first output power and the second output power to the display module 160.

For example, in operation 630, the electronic device 101 may determine the voltage level of the second input power source based on the voltage level of the output power source. For example, a processor (eg, processor 120 of FIG. 1) may determine the voltage level of the second input power source based on the voltage level of the second output power source. For example, the processor 120 may determine the voltage level of the second input power to have a positive correlation with the voltage level of the second output power.

For example, the electronic device 101 may control the converter 310 based on the voltage level of the second input power determined in operation 640. For example, the electronic device 101 may control the converter 310 according to the determined voltage level of the second input power using the feedback circuit of the converter 310. For example, the electronic device 101 inputs a control signal to the converter 310 through SMBUS, and the converter 310 outputs a second input power of the determined voltage level of the second input power according to the control signal. You can.

FIGS. 7A, 7B, and 7C show images displayed on a display module (e.g., the display module 160 of FIG. 1) according to the operation mode of an electronic device (e.g., the electronic device 101 of FIG. 1) according to an embodiment. This is a diagram showing the output area.

FIG. 7A is a diagram showing the electronic device 101 operating in full screen mode. FIG. 7B is a diagram showing the electronic device 101 operating in laptop mode. The display shown in FIG. 7B (e.g., the display 210 in FIG. 2) is in a folded state in the in-folding direction, in which the display 210 is folded inward (a state in which the display 210 is folded in a facing direction). indicates. FIG. 7C is a diagram showing the electronic device 101 operating in tablet mode. The display 210 shown in FIG. 7C is in a folded state in the outward folding direction, indicating that the display 210 is folded in the outward direction.

7A, 7B, and 7C show an area 160-1 in which an image is output to the display 210 and an area 160-2 in which an image is not output in each operation mode of the electronic device 101. .

In the full screen mode of FIG. 7A, the ratio of the area 160-1 where the image is output to the display 210 is 100%, and in the laptop mode of FIG. 7B, the area 160-1 where the image is output to the display 210 is 100%. It is assumed that the ratio of is 70%, and the ratio 160-1 of the area where the image is output on the display 210 in the tablet mode of FIG. 7C is 50%. As shown in FIGS. 7A, 7B, and 7C, the area 160-1 where an image is output to the display 210 in each operation mode may be determined.

For example, when the electronic device 101 determines the voltage level of the output power, it may mean determining the voltage level of the second input power. For example, the electronic device 101 may determine the voltage level of the output power and, based on the voltage level of the output power, determine the voltage level of the second input power.

For example, the larger the area 160-1 where the image is output on the display 210, the more the electronic device 101 can supply output power with a larger voltage (e.g., second output power) to the display module 160. there is. For example, the electronic device 101 may supply output power with a higher voltage level to the display module 160 in full-screen mode, where the image output area 160-1 is the largest, than in laptop mode or tablet mode.

For example, the electronic device 101 may supply output power to the display module 160 according to a predetermined voltage level corresponding to the operation mode. For example, the driver 320 of the electronic device 101 may supply first output power and second output power having voltage levels determined according to the operation mode to the display module 160.

For example, the electronic device 101 may determine the corresponding voltage size to be larger as the size of the area 160-1 where the image is output or the ratio of the area 160-1 where the image is output is larger in each operation mode. . For example, the electronic device 101 may determine the voltage level corresponding to the full screen mode to be larger than the voltage level corresponding to the laptop mode or tablet mode.

For example, the electronic device 101 may determine the voltage level of the second input power supplied to the driver 320 based on the voltage level of the output power. For example, when the electronic device 101 is in an operation mode in which the size of the area 160-1 where the image is output is large, the electronic device 101 supplies a first output power and a second output power with a large voltage to the display module 160. , the voltage size of the second input power may be determined according to the size of the first output power and/or the second output power.

For example, the voltage levels of the first output power supply corresponding to full screen mode, laptop mode, and tablet mode, respectively, may be 5V, 4.8V, and 4.6V, and the voltage levels of the second output power supply may be 9V, 6V, and 4V. .

For example, in full screen mode, the electronic device 101 may supply second output power of 9V to the display module 160. The electronic device 101 may determine the voltage level (eg, 9V) of the second input power input to the driver 320 based on the voltage level of 9V of the second output power. The electronic device 101 may control the converter 310 according to the determined voltage level of the second input power.

For example, in laptop mode, the electronic device 101 may supply second output power of 6V to the display module 160. The electronic device 101 may determine the voltage level (eg, 7V) of the second input power input to the driver 320 based on the voltage level of 6V of the second output power source. The electronic device 101 may control the converter 310 according to the determined voltage level of the second input power.

For example, in tablet mode, the electronic device 101 may supply second output power of 4V to the display module 160. The electronic device 101 may determine the voltage level (eg, 5V) of the second input power input to the driver 320 based on the voltage level of 4V of the second output power. The electronic device 101 may control the converter 310 according to the determined voltage level of the second input power.

In the above example, the voltage sizes of the first output power and the second output power corresponding to the operation mode and the determined voltage size of the second input power are exemplary, and the electronic device 101 has a voltage size different from the above example. Accordingly, the voltage levels of the first output power and the second output power and the determined voltage level of the second input power can be determined.

For example, the electronic device 101 may control the converter 310 according to a predetermined voltage level corresponding to the operation mode. For example, in full screen mode, the electronic device 101 may control the converter 310 so that the voltage level of the second input power source is 9V, which is a predetermined voltage level.

FIGS. 7A, 7B, and 7C are diagrams showing an electronic device 101 including a foldable display 210 according to an embodiment. FIGS. 7A, 7B, and 7C are diagrams showing an electronic device 101 according to an embodiment. The electronic device 101 may have a shape depending on use, such as a slideable display, a flexible display, etc. not shown in FIGS. 7A, 7B, and 7C. The contents described in FIGS. 7A, 7B, and 7C can be applied substantially in the same manner to the electronic device 101 including a display of variable size, shape, etc.

An electronic device (e.g., the electronic device 101 of FIG. 1) according to an embodiment uses a display module (e.g., the display module 160 of FIG. 1), converts the first input power, and uses the second input power as a driver. A converter (e.g., converter 310 in FIG. 3) that supplies power, the driver (e.g., driver 320 in FIG. 3) that converts the second input power and supplies output power to the display module, and a processor (e.g., : It may include a processor 120 in FIG. 1) and a memory (e.g., memory 130 in FIG. 1) that is electrically connected to the processor 120 and stores instructions executed by the processor. The processor 120 may determine the voltage level of the second input power source based on the voltage level of the output power source. The processor 120 may control the converter 310 based on the determined voltage level of the second input power.

The display module 160 may include a display (eg, display 210 in FIG. 2) in which an area where an image is output is determined depending on the operation mode. The driver 320 may supply the output power to the display module 160 according to a predetermined voltage level corresponding to the operation mode.

The driver 320 may supply the output power determined based on the area where the image is output on the display 210 of the display module 160 to the display module 160.

The processor 120 may control the converter 310 so that the voltage level of the output power source and the level of the voltage level of the second input power source have a positive correlation.

The converter 310 includes a plurality of resistors (e.g., resistors 314, 315, and 316 in FIG. 4) and a switch (e.g., a switch in FIG. 4) that controls the connection of the plurality of resistors 314, 315, and 316. (316)). The converter 310 may determine the magnitude of the voltage of the second input power source according to the operation of the switch 316. The processor 120 may control the operation of the switch 316 by comparing the level of a preset reference voltage and the level of the voltage of the output power.

The processor 120 may transmit a signal for controlling the converter to the converter 310 according to the voltage level of the output power.

The electronic device 101 according to one embodiment includes a display module 160 including a display 210 that can be changed into a folded or unfolded state, converts the first input power, and converts the second input power to the driver. A converter 310 that converts the second input power and supplies output power to the display module is electrically connected to the driver 320, a processor 120, and the processor 120, and is connected to the processor 120. It may include a memory 130 that stores instructions executed by. The processor 120 may determine the voltage level of the second input power based on the state of the display 210 and the voltage level of the output power. The processor 120 may control the converter 310 based on the determined voltage level of the second input power.

The display 210 may determine an area where an image is output depending on whether the display 210 is in the folded state or the unfolded state. The driver 320 may supply the output power to the display module 160 according to a predetermined voltage level corresponding to the area where the image is output.

The processor 120 may control the converter 310 so that the voltage level of the output power source and the level of the voltage level of the second input power source have a positive correlation.

The converter 310 may include a plurality of resistors 314, 315, and 316 and a switch 316 that controls the connection of the plurality of resistors 314, 315, and 316. The converter 310 may determine the magnitude of the voltage of the second input power source according to the operation of the switch 316. The processor 120 may control the operation of the switch 316 by comparing the level of a preset reference voltage and the level of the voltage of the output power.

The processor 120 may transmit a signal for controlling the converter 310 to the converter 310 according to the voltage level of the output power.

The power supply method according to one embodiment includes the converter 310 converting the first input power and supplying the second input power to the driver 320, and the driver 320 converting the second input power to , supplying output power to the display module 160, determining the voltage level of the second input power based on the voltage level of the output power, and based on the determined voltage level of the second input power, It may include an operation to control the converter 310.

The display module 160 may include a display 210 in which an area where an image is output is determined depending on the operation mode. The operation of supplying output power to the display module 160 may include supplying the output power to the display module 160 according to a predetermined voltage level corresponding to the operation mode.

In the operation of supplying output power to the display module 160, the output power determined based on the area where the image is output on the display 210 of the display module 160 may be supplied to the display module 160. .

The operation of controlling the converter 310 may include controlling the converter 310 so that the magnitude of the voltage of the output power and the magnitude of the voltage of the second input power have a positive correlation.

The converter 310 may include a plurality of resistors 314, 315, and 316 and a switch 316 that controls the connection of the plurality of resistors 314, 315, and 316. The operation of supplying the second input power may supply the second input power according to a voltage level predetermined based on the operation of the switch 316. Controlling the converter 310 may control the operation of the switch 316 by comparing the level of a preset reference voltage and the level of the voltage of the output power.

The operation of controlling the converter 310 may involve transmitting a signal for controlling the converter 310 to the converter 310 according to the voltage level of the output power.

Electronic devices according to various embodiments disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

The various embodiments of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “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 “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” Where mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

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

Various embodiments of the present document are one or more instructions stored in a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). It may be implemented as software (e.g., program 140) including these. For example, a processor (e.g., processor 120) of a device (e.g., electronic device 101) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term refers to cases where data is semi-permanently stored in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, methods according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products are commodities and can be traded 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 through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to various embodiments, each component (e.g., module or program) of the above-described components may include a single or plural entity, and some of the plurality of entities may be separately placed in other components. there is. According to various embodiments, one or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, or omitted. Alternatively, one or more other operations may be added.

Claims (14)

1. display module 160;

   A converter 310 that converts the first input power and supplies second input power to the driver 320;

   The driver 320 converts the second input power and supplies output power to the display module 160;

   processor 120; and

   A memory 130 electrically connected to the processor 120 and storing instructions executed by the processor 120.

   Including,

   The processor 120,

   Based on the voltage magnitude of the output power, determine the voltage magnitude of the second input power,

   Controlling the converter 310 based on the determined voltage level of the second input power,

   Electronic device (101).
2. According to paragraph 1,

   The display module 160 is,

   It includes a display 210 in which an area where an image is output is determined according to the operation mode,

   The driver 320,

   Supplying the output power to the display module 160 according to the magnitude of a predetermined voltage corresponding to the operation mode,

   Electronic device (101).
3. According to paragraph 2,

   The driver 320,

   Supplying the output power determined based on the area where the image is output on the display 210 of the display module 160 to the display module 160,

   Electronic device (101).
4. According to any one of claims 1 to 3,

   The processor 120,

   Controlling the converter 310 so that the magnitude of the voltage of the output power and the magnitude of the voltage of the second input power have a positive correlation,

   Electronic device (101).
5. According to any one of claims 1 to 4,

   The converter 310,

   It includes a plurality of resistors (313, 314, 315) and a switch (316) that controls the connection of the plurality of resistors (313, 314, 315),

   Depending on the operation of the switch 316, determine the magnitude of the voltage of the second input power supply,

   The processor 120,

   Controlling the operation of the switch by comparing the size of the preset reference voltage and the voltage of the output power,

   Electronic device (101).
6. According to any one of claims 1 to 5,

   The processor 120,

   According to the voltage level of the output power, a signal for controlling the converter 310 is transmitted to the converter 310,

   Electronic device (101).
7. According to paragraph 2,

   The processor 120,

   Determining the voltage level of the second input power based on the brightness of the display 210,

   Electronic device (101).
8. An operation of the converter 310 converting the first input power and supplying the second input power to the driver 320;

   An operation of the driver 320 converting the second input power to supply output power to the display module 160;

   determining a voltage level of the second input power based on the voltage level of the output power; and

   An operation of controlling the converter 310 based on the determined voltage level of the second input power source.

   Including,

   Power supply method.
9. According to clause 8,

   The display module 160 is,

   It includes a display 210 in which an area where an image is output is determined according to the operation mode,

   The operation of supplying output power to the display module 160 is:

   Supplying the output power to the display module 160 according to the magnitude of a predetermined voltage corresponding to the operation mode,

   Power supply method.
10. According to clause 9,

    The operation of supplying output power to the display module 160 is:

    Supplying the output power determined based on the area where the image is output on the display 210 of the display module 160 to the display module 160,

    Power supply method.
11. According to any one of claims 8 to 10,

    The operation of controlling the converter 310 is:

    Controlling the converter 310 so that the magnitude of the voltage of the output power and the magnitude of the voltage of the second input power have a positive correlation,

    Power supply method.
12. According to any one of claims 8 to 11,

    The converter 310,

    It includes a plurality of resistors (313, 314, 315) and a switch (316) that controls the connection of the plurality of resistors (313, 314, 315),

    The operation of supplying the second input power is:

    Supplying the second input power according to a predetermined voltage level based on the operation of the switch 316,

    The operation of controlling the converter 310 is:

    Controlling the operation of the switch by comparing the size of the preset reference voltage and the voltage of the output power,

    Power supply method.
13. According to any one of claims 8 to 12,

    The operation of controlling the converter 310 is:

    According to the voltage level of the output power, a signal for controlling the converter 310 is transmitted to the converter 310,

    Power supply method.
14. According to clause 9,

    The operation of determining the voltage level of the second input power supply is:

    Determining the voltage level of the second input power based on the brightness of the display 210,

    Power supply method.

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