WO2019172722A1 - Procédé et dispositif électronique pour compenser une image sur la base d'un temps cumulé pendant lequel l'image est affichée par une unité d'affichage, et pour afficher une image compensée - Google Patents

Procédé et dispositif électronique pour compenser une image sur la base d'un temps cumulé pendant lequel l'image est affichée par une unité d'affichage, et pour afficher une image compensée Download PDF

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Publication number
WO2019172722A1
WO2019172722A1 PCT/KR2019/002755 KR2019002755W WO2019172722A1 WO 2019172722 A1 WO2019172722 A1 WO 2019172722A1 KR 2019002755 W KR2019002755 W KR 2019002755W WO 2019172722 A1 WO2019172722 A1 WO 2019172722A1
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Prior art keywords
image
display
displayed
pixel
processor
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PCT/KR2019/002755
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English (en)
Korean (ko)
Inventor
김한여울
배종곤
이요한
한동균
염동현
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삼성전자 주식회사
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Publication of WO2019172722A1 publication Critical patent/WO2019172722A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Definitions

  • Various embodiments of the present disclosure relate to an electronic device, for example, to an electronic device including a display for displaying an image and an image compensation method of the electronic device.
  • an electronic device such as a wearable device such as a smartphone, a tablet PC, or a smart watch may provide various contents and applications to a user.
  • the electronic device may include a display for providing visual information to the user.
  • the type of display included in the electronic device is not limited, but a display having an element that emits itself according to the supply of a current, such as an organic light emitting diode (OLED), a plasma display panel (PDP), or the like may be used.
  • OLED organic light emitting diode
  • PDP plasma display panel
  • deterioration or burn-in may occur in the light emitting element of each pixel when the electronic device is used for a long time, and the luminance of the resulting pixel may cause unevenness in image representation. Can be.
  • Various embodiments of the present disclosure have an object of providing an electronic device and an image compensation method of the electronic device that can compensate for the unevenness of the image representation due to display degradation through a small amount of data processing.
  • an electronic device may include a display including at least one display pixel, at least one image including at least one image pixel to be displayed through at least some display pixels of the at least one display pixel, and And a memory for storing at least one degradation information corresponding to the at least one image related to the performance degradation that the at least one image pixel may be caused by a cumulative time to be displayed on the at least some display pixels.
  • the processor may be further configured to determine a cumulative time at which a designated image of the at least one image is displayed on the display, and to display deterioration information corresponding to the designated image among the at least one deterioration information and a accumulated time at which the designated image is displayed. To this To the specified compensation at least a portion of data corresponding to at least one of the given image pixel in the image, and through the at least some display pixels, wherein at least a portion may be set to show the compensation data.
  • an electronic device includes a display including display pixels, a memory for storing at least one image and at least one degradation information corresponding to the at least one image
  • the processor includes: Recording a cumulative time for displaying at least one image on the display as stress information for the display, checking a first image set to be displayed on the display among the at least one image, and recording the accumulated information on the stress information. Compensating pixel data of at least one image pixel of the first image based on a cumulative time at least one image is displayed on the display and the deterioration information corresponding to the at least one image, and the compensated pixel data D of the display It may be set to display pixels with the play.
  • an image compensation method of an electronic device may include at least one image and at least one degradation information corresponding to each of the at least one image.
  • the deterioration information is related to the degree to which the display pixels deteriorate as a corresponding image is displayed on the display of the electronic device. Storing at least one identifier of at least one image displayed on the display and a cumulative time of each of the at least one image displayed on the display as stress information, the at least one image being displayed on the display.
  • an electronic device and an image compensation method of the electronic device capable of compensating for non-uniformity of an image representation due to display degradation through a small amount of data processing.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure.
  • FIGS. 2A and 2B illustrate an electronic device and an image displayed on the electronic device according to various embodiments of the present disclosure.
  • FIG. 3 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • FIG. 4 illustrates an image and deterioration information corresponding to an image according to various embodiments of the present disclosure.
  • FIG. 5 illustrates a method of recording stress information based on an image and deterioration information according to various embodiments.
  • FIG. 6 is a block diagram illustrating an application processor and a display processor of an electronic device according to various embodiments of the present disclosure.
  • FIG. 7 is a block diagram illustrating an application processor and a display processor of an electronic device according to various embodiments of the present disclosure.
  • FIG. 8 is a flowchart illustrating an image compensation method of an electronic device according to various embodiments of the present disclosure.
  • FIG. 9 is a flowchart illustrating an image compensation method of an electronic device according to various embodiments of the present disclosure.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments.
  • the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or the second network 199.
  • the electronic device 104 may communicate with the server 108 through a long range wireless communication network.
  • the electronic device 101 may communicate with the electronic device 104 through the server 108.
  • the electronic device 101 may include a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, and a sensor module ( 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197. ) May be included.
  • a sensor module 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197.
  • the components for example, the display device 160 or the camera module 180
  • the sensor module 176 may be implemented embedded in the display device 160 (eg, display).
  • the processor 120 executes software (eg, the program 140) to execute at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, processor 120 may send instructions or data received from another component (eg, sensor module 176 or communication module 190) to volatile memory 132. Can be loaded into, processed in a command or data stored in volatile memory 132, and stored in the non-volatile memory (134).
  • software eg, the program 140
  • processor 120 may send instructions or data received from another component (eg, sensor module 176 or communication module 190) to volatile memory 132. Can be loaded into, processed in a command or data stored in volatile memory 132, and stored in the non-volatile memory (134).
  • the processor 120 may include a main processor 121 (eg, a central processing unit or an application processor), and a coprocessor 123 (eg, a graphics processing unit, an image signal processor) that may operate independently or together. , Sensor hub processor, or communication processor). Additionally or alternatively, the coprocessor 123 may be set to use lower power than the main processor 121 or to be specialized for its designated function. The coprocessor 123 may be implemented separately from or as part of the main processor 121.
  • a main processor 121 eg, a central processing unit or an application processor
  • a coprocessor 123 eg, a graphics processing unit, an image signal processor
  • the coprocessor 123 may be set to use lower power than the main processor 121 or to be specialized for its designated function.
  • the coprocessor 123 may be implemented separately from or as part of the main processor 121.
  • the coprocessor 123 may, for example, replace the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 may be active (eg, execute an application). At least one of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) together with the main processor 121 while in the) state. Control at least some of the functions or states associated with the. According to one embodiment, the coprocessor 123 (eg, an image signal processor or communication processor) may be implemented as part of other functionally related components (eg, camera module 180 or communication module 190). have.
  • 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.
  • the data may include, for example, software (eg, the program 140) and input data or output data for a command related thereto.
  • the memory 130 may include a volatile memory 132 or a nonvolatile 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 an application 146.
  • the input device 150 may receive a command or data to be used for a component (for example, the processor 120) of the electronic device 101 from the outside (for example, a user) of the electronic device 101.
  • the input device 150 may include, for example, a microphone, a mouse, or a keyboard.
  • the sound output device 155 may output a sound signal to the outside of the electronic device 101.
  • the sound output device 155 may include, for example, a speaker or a receiver.
  • the speaker may be used for general purposes such as multimedia playback or recording playback, and the receiver may be used to receive an incoming call.
  • the receiver may be implemented separately from or as part of a speaker.
  • the display device 160 may visually provide information to the outside (eg, a user) of the electronic device 101.
  • the display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
  • the display device 160 may include a touch circuitry configured to sense a touch, or a sensor circuit (eg, a pressure sensor) configured to measure the strength of a force generated by the touch. have.
  • the audio module 170 may convert sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 may acquire sound through the input device 150, or may output an external electronic device (eg, a sound output device 155, or directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (eg, a speaker or a headphone).
  • an external electronic device eg, a sound output device 155, or directly or wirelessly connected to the electronic device 101. Sound may be output through the electronic device 102 (eg, a speaker or a headphone).
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101, or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do.
  • the sensor module 176 may include, 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 infrared sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more designated protocols that may be used for the electronic device 101 to be directly or wirelessly connected to an external electronic device (for example, the electronic device 102).
  • 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.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card interface
  • audio interface audio interface
  • connection terminal 178 may include a connector through which the electronic device 101 may be physically connected to an external electronic device (eg, the electronic device 102).
  • 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 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and videos. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101.
  • the power management module 388 may be implemented, for example, as at least part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101.
  • the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell or a fuel cell.
  • the communication module 190 may establish a direct (eg wired) communication channel or wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). Establish and perform communication over established communication channels.
  • the communication module 190 may operate independently of the processor 120 (eg, an application processor) and include one or more communication processors supporting direct (eg, wired) or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a near field communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg It may include a local area network (LAN) communication module, or a power line communication module.
  • GNSS global navigation satellite system
  • the corresponding communication module of these communication modules may be a first network 198 (e.g. a short range communication network such as Bluetooth, WiFi direct or infrared data association (IrDA)) or a second network 199 (e.g. cellular network, the Internet, or Communicate with external electronic devices via a telecommunications network, such as a computer network (eg, LAN or WAN).
  • a first network 198 e.g. a short range communication network such as Bluetooth, WiFi direct or infrared data association (IrDA)
  • a second network 199 e.g. cellular network, the Internet, or Communicate with external electronic devices via a telecommunications network, such as a computer network (eg, LAN or WAN).
  • a telecommunications network such as a computer network (eg, LAN or WAN).
  • the wireless communication module 192 uses subscriber information (e.g., international mobile subscriber identifier (IMSI)) stored in the subscriber identification module 196 in a communication network such as the first network 198 or the second network 199.
  • subscriber information e.g., international mobile subscriber identifier (IMSI)
  • IMSI international mobile subscriber identifier
  • the antenna module 197 may transmit or receive a signal or power to an external (eg, an external electronic device) or from the outside.
  • antenna module 197 may include one or more antennas, from which at least one antenna suitable for a communication scheme used in a communication network, such as first network 198 or second network 199, For example, it may be selected by the communication module 190.
  • the signal or power may be transmitted or received between the communication module 190 and the external electronic device through the at least one selected antenna.
  • peripheral devices eg, a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command 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 electronic devices 102 and 104 may be a device of the same or different type as the electronic device 101.
  • all or part of operations executed in the electronic device 101 may be executed in one or more external devices among the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device 101 instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • the one or more external electronic devices that receive the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101.
  • the electronic device 101 may process the result as it is or additionally and provide it as at least part of a response to the request.
  • cloud computing distributed computing, or client-server computing technology may be used.
  • Electronic devices may be various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smartphone
  • a computer device e.g., a tablet, or a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a camera
  • a wearable device e.g., a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch, or a smart watch
  • first, second, or first or second may be used merely to distinguish a component from other corresponding components, and to separate the components from other aspects (e.g. Order).
  • Some (eg first) component may be referred to as “coupled” or “connected” to another (eg second) component, with or without the term “functionally” or “communically”.
  • any component can be connected directly to the other component (eg, by wire), wirelessly, or via a third component.
  • module may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit.
  • the module may be an integral part or a minimum unit or part of the component, which performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of this document may include one or more instructions stored on a storage medium (eg, internal memory 136 or external memory 138) that can be read by a machine (eg, electronic device 101). It may be implemented as software (eg, program 140) including the.
  • a processor eg, the processor 120 of the device (eg, the electronic device 101) may call and execute at least one command among one or more instructions stored from the storage medium. This enables the device to be operated to perform at least one function in accordance with the at least one command invoked.
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' means only that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), which is the case when data is stored semi-permanently on the storage medium. It does not distinguish cases where it is temporarily stored.
  • a signal e.g., electromagnetic waves
  • a method may be provided included in a computer program product.
  • the computer program product may be traded between the seller and the buyer as a product.
  • the computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play StoreTM) or two user devices ( Example: smartphones) can be distributed (eg downloaded or uploaded) directly or online.
  • a device-readable storage medium such as a server of a manufacturer, a server of an application store, or a relay server, or may be temporarily created.
  • each component eg, module or program of the above-described components may include a singular or plural entity.
  • one or more of the aforementioned components or operations may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of the component of each of the plurality of components the same as or similar to that performed by the corresponding component of the plurality of components before the integration. .
  • operations performed by a module, program, or other component may be executed 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 actions may be added.
  • FIGS. 2A and 2B illustrate an electronic device and an image displayed on the electronic device according to various embodiments of the present disclosure.
  • the electronic device 200a may be implemented as a wearable device such as a smart watch.
  • the user may wear the electronic device 200a on a body such as a wrist to use various functions such as a watch, a call, and an application.
  • the electronic device 200a may include a display 210a, and the display 210a may display various images 215a such as a watch. According to various embodiments, the electronic device 200a may operate in a wake-up mode and a sleep mode, and in the sleep mode, various hardware modules included in the electronic device 200a and / or Alternatively, at least some of the software modules may be deactivated or supplied with minimal power to perform only specified limited functions.
  • the electronic device 200a may display predetermined information such as the clock image 215a even in the sleep mode, and may have an always on display (AOD) function that always displays necessary information even in the sleep mode.
  • AOD always on display
  • the type of the image 215a displayed through the AOD function is not limited. For example, in addition to the clock image 215a, information such as calendar, weather, battery level, missed call, and unacknowledged message may be displayed according to a user's selection. It can be displayed on a part of 210a.
  • the images 215a displayed through the AOD function may display fixed content for a long time.
  • the hour / minute / second hand may change with time, but the background of the hour / minute / second hand may be displayed in the same manner.
  • some of the display pixels included in the display 210a corresponding to the background may continue to emit light during the display of the clock image 215a, which may cause deterioration of the pixels of the display 210a. have.
  • the electronic device 200b may be implemented as a portable electronic device such as a smart phone as illustrated in FIG. 2B. Even in this case, the electronic device 200b may perform the AOD function in the sleep mode, and deterioration of the display pixels may occur as in the case of the wearable device of FIG. 2A.
  • FIG. 3 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • the electronic device 300 may include a display 310, a display processor 320, a communication circuit 330, an application processor 340, and a memory 350. Even if at least a part of the configuration is omitted or substituted it can implement various embodiments of the present invention.
  • the electronic device 300 may further include at least some of the configuration and / or functions of the electronic device 101 of FIG. 1.
  • the electronic device 300 may be implemented as the wearable device 200a of FIG. 2A or the smartphone 200b of FIG. 2B, but is not limited thereto.
  • the display 310 may display an image according to a control signal of the display processor 320.
  • the type of the display 310 included in the electronic device 300 is not limited.
  • the display 310 may be used to supply current such as an organic light-emitting diode (OLED) and a plasma display panel (PDP).
  • OLED organic light-emitting diode
  • PDP plasma display panel
  • the display 310 may include at least some of the configuration and / or functions of the display device 160 of FIG. 1.
  • the display 310 includes a plurality of display pixels, each of which includes an R subpixel that outputs a red color, a G subpixel that outputs a green color, and a B subpixel that outputs a blue color. By adjusting the brightness of the can achieve the intended color.
  • the display processor 320 may be a display driver integrated circuit (DDI) for controlling a display function of the display 310.
  • the display processor 320 may control to display the image data transmitted from another processor such as the application processor 340 on the display 310.
  • the display processor 320 may be electrically or functionally coupled through an interface (eg, a mobile industry processor interface (MIPI)), and another processor (eg, an application processor 340) through the interface. Images can be received from.
  • the display processor 320 includes at least one memory (eg, random access memory (RAM)) internally, and stored in the internal memory in a specific mode (eg, sleep mode or AOD mode). The image may be output to the display 310.
  • RAM random access memory
  • the display processor 320 may perform preprocessing or postprocessing (eg, resolution, brightness, or scaling) based at least in part on an image to be displayed on the display 310 based on at least the characteristics of the image data or the characteristics of the display 310. Can be done.
  • the display processor 320 eg, a mapping module (not shown)
  • a mapping module is based at least in part on the properties of the display pixels of the display 310 (eg, an array of pixels (RGB stripe or pentile), or the size of each of the subpixels).
  • the image data pre-processed or post-processed through an image processing module may be converted into a voltage value or a current value capable of driving the display pixels.
  • At least some display pixels of the display 310 are driven based on the voltage or current values, for example, so that visual information (eg, text, images, or icons) corresponding to the image data is displayed on the display 310. Can be displayed.
  • the memory 350 includes volatile memory (eg, volatile memory 132 of FIG. 1) and / or nonvolatile memory (eg, nonvolatile memory 134 of FIG. 1), and may include an application processor. 340 may be electrically connected.
  • the memory 350 may store various instructions that may be performed by the application processor 340 or the display processor 320. Such instructions may include control instructions such as arithmetic and logical operations, data movement, input / output, and the like that can be recognized by the processor.
  • the memory 350 may store at least a portion of the program 140 of FIG. 1.
  • the application processor 340 is configured to perform calculation or data processing related to control and / or communication of each component of the electronic device 300, and the configuration of the processor 120 of FIG. 1. And / or at least some of the functionality.
  • the application processor 340 may be electrically connected to each component of the electronic device 300 (eg, the display processor 320, the communication circuit 330, the memory 350, and the like).
  • the communication circuit 330 is a component for wirelessly communicating with an external communication device (eg, a Wi-Fi AP, a mobile communication base station).
  • the electronic device 300 may transmit / receive data with an external device (eg, a server device) through the external communication device and various networks using the communication circuit 330.
  • the memory 350 may store at least one image (eg, a first image) to be displayed through the display 310.
  • at least one of the at least one image stored in the memory 350 may be an AOD image displayed on the display 310 when the electronic device 300 operates the always on display (AOD) function in a sleep mode. Can be.
  • the AOD function provides low-power AOD images (eg, clocks, calendars, and the like) using the display processor 320 and the display 310 at low power, without powering at least some components of the electronic device 300 such as the application processor 340. Weather, battery level, etc.).
  • an example of an image stored in the memory 350 will be described using, for example, an AOD image displayed in an AOD state, and a clock image thereof, but is not limited thereto.
  • one image may be composed of a combination of several small images.
  • several small images may be divided into minute hands, second hands, hour hands, and background images, and a single image may be composed of various combinations of these to have an ID, which may be stressed. Can be recorded as information.
  • the memory 350 may store degradation information corresponding to each of the at least one image stored in the memory 350.
  • the deterioration information may be related to the degree to which the display pixels of the display 310 deteriorate as the corresponding image is displayed on the display 310.
  • the display 310 may include an element that emits light by itself, such as an OLED, and the luminance characteristic of the corresponding element may be deteriorated according to the use of the display 310.
  • the display processor 320 applies a current or voltage corresponding to the pixel data (e.g., R / G / B grayscale values) of the image pixels of the image to be output to the corresponding display pixels, but if a particular display pixel is degraded, the same Even when a current or a voltage is supplied, lower luminance can be output. Such degradation may occur for each of the R subpixel, G subpixel, and B subpixel included in the display pixel. In particular, in the case of the AOD image described above, it is generally displayed for a long time, and thus the degree of deterioration of the display pixel may be greater than that of the general images.
  • a current or voltage corresponding to the pixel data e.g., R / G / B grayscale values
  • the deterioration information may include a value regarding a degree of deterioration of display pixels generated when a corresponding image is displayed on the display 310 for a unit time (eg, 1 hour or 1 day). That is, the deterioration information is a value indicating the degree of deterioration of each display pixel, more specifically, each sub-pixel (eg, percentage, candela, etc.). Each display pixel is displayed when the corresponding image is displayed instead of the degree of deterioration of the actual display pixel. It may be a value that predicts (or measures) the degree of degradation.
  • the degradation information may be received from an external device or generated directly by the electronic device 300 (eg, the application processor 340).
  • the degradation information may be received from an external device through the communication circuit 330.
  • the electronic device 300 may receive an image (eg, a clock image) from an external device (eg, a server device), and the server device may provide deterioration information corresponding to each image to the electronic device 300. can do.
  • the server device generates deterioration information based on the image pixel distribution of the corresponding image and the pixel data of each sub pixel and the properties of the display pixel of the electronic device 300 (eg, the property of the organic material of each sub pixel).
  • the electronic device 300 may be provided.
  • the electronic device 300 may display a specific image on the display 310 for a unit time (eg, 1 hour or 1 day) and display the image.
  • a unit time eg, 1 hour or 1 day
  • the display pixels of the display 310 sense the luminance actually output, the degree of deterioration of each display pixel may be determined, and deterioration information corresponding to the corresponding image may be generated therefrom.
  • the display processor 320 may display one selected from at least one image (eg, an AOD image) stored in the memory 350 through the display 310.
  • the display processor 320 may display a predetermined clock image when the electronic device 300 enters the sleep mode while the AOD function is turned on.
  • the image displayed through the AOD function may be changed according to a user's setting while displaying the AOD image or in the wake-up mode.
  • the display processor 320 may record, as stress information, an ID (or identifier) of at least one image displayed on the display 310 and a cumulative time of displaying each of the images on the display 310. have. For example, when the first image of at least one image is displayed from t 1 to t 2 , the ID and the display time t 2 -t 1 of the first image are recorded, and then the second image is recorded from t 3. When t 4 is displayed, the ID and the display time t 4- t 3 of the second image may be recorded as stress information.
  • the stress information may be updated as a specific image is displayed on the display 310, and the ID and the cumulative display time of each displayed image may be continuously or periodically recorded.
  • the display processor 320 may store and update stress information in the internal memory 350 (eg, RAM) of the display processor 320, or store and update the stress information in one region of the memory 350. have.
  • the display processor 320 may identify an image set to be displayed on the display 310 and compensate pixel data of an image pixel of the image based on the stress information.
  • display pixels may deteriorate as they display an image, and in this case, at least some display pixels may exhibit lower luminance than actual input pixel data.
  • the display processor 320 compensates an image by increasing pixel data of an image pixel corresponding to a degraded display pixel or reducing pixel data of an undeteriorated display pixel. can do.
  • the display processor 320 increases the pixel data of the image data corresponding to the deteriorated display pixel in the image data input from the application processor 340 by the degree of deterioration, and the driving current corresponding to the compensated image data. And / or apply a voltage to display the compensated image.
  • the display processor 320 may display the compensated image by increasing the driving current and / or voltage by the deterioration degree in the case of the deteriorated display pixel.
  • the display processor 320 may determine the degree of deterioration of the display pixels based on the stress information, and compensate the pixel data of at least one image pixel of the image based on the degree of deterioration. Since the stress information is stored in the display cumulative time of the images stored in the memory 350, the deterioration information of each image represents the degree of degradation of each display pixel per unit time, so that the display processor 320 displays from the stress information to the present The degree of degradation of the pixels can be checked.
  • the degree of deterioration of each display pixel may be calculated when each pixel is displayed for 100 hours through deterioration information of the first image.
  • the pixel data of the first image pixel corresponding to the first pixel is increased by 100/90
  • the pixel data of the second image pixel corresponding to two pixels may be increased by 100/80. Accordingly, since the display processor 320 supplies the current or voltage of the increased pixel data to the display pixel, the luminance ratio of each pixel may be the same as before deterioration of the display pixels occurs.
  • an operation of recording and updating stress information and compensating pixel data of an image pixel based on the stress information when displaying an image is performed by the display processor 320, but at least some of the operations may be performed by an application processor ( 340 may be performed.
  • an application processor 340 may be performed.
  • the application processor 340 calculates the degree of deterioration of each display pixel by referring to the stress information and the deterioration information stored in the memory 350, compensates an image therefrom, and provides the image to the display processor 320.
  • the processor 320 may output the compensated image received from the application processor 340 to the display 310 as it is.
  • FIG. 4 illustrates an image and deterioration information corresponding to an image according to various embodiments of the present disclosure.
  • the electronic device may store at least one image and degradation information corresponding to each image in a memory (eg, the memory 350 of FIG. 3).
  • the stored image may be an image (eg, a clock image) displayed in the AOD state.
  • the electronic device may store first to fourth images 411, 412, 413, and 414 that are clock images in a memory.
  • the electronic device may determine deterioration information (eg, first degradation information to fourth degradation information 421, 422, 423, 424) corresponding to the first to fourth images 411, 412, 413, and 414, respectively.
  • deterioration information eg, first degradation information to fourth degradation information 421, 422, 423, 424
  • IDs may be assigned to the first to fourth images 411, 412, 413, and 414, respectively, and IDs assigned to the respective images may also be mapped to deterioration information 421, 422, 423, and 424.
  • the deterioration information may be related to the degree of deterioration of display pixels generated when a corresponding image is displayed on a display (eg, the display 310 of FIG. 3) during a unit time (eg, 1 hour or 1 day). It can contain a value.
  • the first image 411 distinguishes the hour / minute / second hand from the time and separates the weather, month, and day of the week. It may include a circular image.
  • the hour / minute / second hand changes over time, the hour / minute / second hand may not be repeatedly displayed on the same display pixel.
  • the hour / minute / second hand may have less influence on the degradation of the display pixel.
  • the time-dividing bar and the center circle of the clock image are continuously displayed despite the passage of time, and thus may have a large influence on the deterioration of display pixels.
  • the first deterioration information may include a degree of deterioration on each display pixel when the first image 411 is displayed for a unit time.
  • the degradation information may include a value (eg, percentage, candela, etc.) indicating a degree of degradation of each display pixel (eg, R / G / B subpixel).
  • the degree of deterioration of the R / G / B subpixel of the first pixel is 0.1%
  • the R subpixel of the second pixel is 0.1%
  • G sub The pixel may be 0.01%
  • the B subpixel may be 0.02%. That is, the degree of deterioration of the display pixel included in the deterioration information may vary for each display pixel according to the luminance and the color represented by the image pixel of the image, and the deterioration of each sub pixel of the specific display pixel according to the color to be displayed by the specific display pixel. The degree may vary.
  • the degradation information may be received from an external device through a communication circuit (eg, the communication circuit 330 of FIG. 3).
  • the deterioration information received from the external device is a value calculated by the external device by analyzing the pixel data of the image and calculating an expected degree of deterioration, and may be data that can be obtained in each image and set.
  • the deterioration information may be data generated by confirming a degree of deterioration of the display after displaying a specific image by using the same kind of display as the display of the electronic device.
  • the electronic device displays a specific image for a unit time (for example, one hour or one day), checks the degree to which each display pixel of the display deteriorates when displaying the image, and then displays the image from the corresponding image. Corresponding deterioration information may be generated.
  • FIG. 5 illustrates a method of recording stress information based on an image and deterioration information according to various embodiments.
  • the electronic device may include an ID of at least one image displayed on the display (eg, the display 310 of FIG. 3). (Or identifier) and the cumulative time for displaying each of the images on the display may be recorded as stress information.
  • the electronic device when the first image 511 is displayed, the electronic device records an ID of the first image 511, a time at which display of the first image 511 starts, an end time, and a display duration. After that, when the second image 512, the third image 513, and the fourth image 514 are sequentially displayed, an ID of each image, a time at which display is started, an end time, and a display duration may be recorded. Can be.
  • t is the display time of the second images to the fourth images 512 to 514 is displayed. 2 to t 4 can be recorded respectively. In this case, both the display start time and the end time may be recorded or only the time when the display is accumulated.
  • the stress information may be updated as a specific image is displayed on the display, and the ID and cumulative display time of each displayed image may be continuously or periodically recorded.
  • the display processor may store and update stress information in an internal memory (eg, RAM) of the display processor, or may store and update the stress information in a region of the memory.
  • the display processor may identify an image set to be displayed on the display and compensate pixel data of an image pixel of the image based on the stress information.
  • the stress information may include only the ID of the image and the cumulative display time, which corresponds to very small size data of about several kb.
  • the electronic device since data used to compensate an image in consideration of deterioration of the display is only stress information and deterioration information corresponding to each image, the electronic device according to various embodiments may be configured to display degradation through a very small amount of data processing. The nonuniformity of the image representation can be compensated for.
  • FIG. 6 is a block diagram illustrating an application processor and a display processor of an electronic device according to various embodiments of the present disclosure.
  • the application processor 640 may display a first image to be displayed when the electronic device operates in a specific mode (eg, a sleep mode or an AOD mode).
  • a specific mode eg, a sleep mode or an AOD mode.
  • 620 eg, the display processor 320 of FIG. 3.
  • the display processor 620 may include a first memory 621 and a second memory 622.
  • the first memory 621 and the second memory 622 may each be separate RAMs or correspond to separate physical or virtual areas (eg, an operation or a statically assigned address) separated from one RAM. have.
  • the display processor 620 may use one area of an external memory (for example, the memory 350 of FIG. 3) for the purpose of the first memory 621 and the second memory 622.
  • the display processor 620 may store the display image in the first memory 621 and store the stress information in the second memory 622.
  • the display image may be changed according to a user's setting.
  • the display image changed from the application processor 640 is provided to the display processor 620, and the display processor 620 displays the previous display image.
  • the deleted and changed display image may be stored in the first memory 621.
  • the display processor 620 may display the second memory (eg, in an hourly manner) in real time or as a display image is displayed on the display.
  • the stress information stored in 622 may be updated.
  • the display processor 620 may identify a display image stored in the first memory 621, and may accumulate time for displaying at least one image recorded in the stress information stored in the second memory 622 on the display. And pixel data of an image pixel of the display image based on the deterioration information corresponding to the at least one image.
  • the display processor 620 may compensate an image in a manner of reducing pixel data of an image pixel corresponding to a display pixel having a low degree of deterioration.
  • the display processor 620 identifies at least one display pixel whose degree of deterioration among the display pixels is greater than or equal to a reference value (eg, 10%), and the pixel of the image pixel of the image corresponding to the display pixel that is greater than or equal to the reference value. Data can be compensated. In other words, in the case of display pixels having a low degree of deterioration (eg, less than 10%), the compensation may not be performed because the influence on the luminance unevenness is small.
  • a reference value eg, 10%
  • the display processor 620 may display the compensated image on the display through color correction and luminance correction. Here, at least some of the color correction and the luminance correction may not be performed according to the setting.
  • FIG. 7 is a block diagram illustrating an application processor and a display processor of an electronic device according to various embodiments of the present disclosure.
  • the application processor 740 or the display processor 720 of the electronic device may compensate for the pixel data of the image pixel of the image set to be displayed on the display based on the stress information.
  • the application processor 740 may obtain the stress information 752a.
  • the stress information 752a may be stored in the memory of the electronic device or in the second memory 722 of the display processor 720.
  • the application processor 740 may check the degree of degradation 753a of the display pixels based on the stress information 752a.
  • the application processor 740 may provide the background image 751a and the deterioration degree 753a of the identified display pixels to the display processor 720 through an interface (eg, MIPI).
  • the application processor 740 may compensate pixel data of an image to be displayed on the display based on the degree of deterioration of the identified display pixels.
  • the system load or system power consumption may be increased, and when the operation of the application processor 740 such as AOD is limited, compensation of pixel data may be difficult. .
  • the operation of checking the deterioration degree of the display pixels based on the stress information may be performed by the display processor 720.
  • the display processor 720 may include a first memory 721 for storing a display image, a second memory 722 for storing stress information, and a first memory 721 and a second memory 722. It may include a memory controller 723 to control the input / output of.
  • the display processor 720 may check the display image stored in the first memory 721 and compensate the pixel data of the image pixel of the display image based on the stress information stored in the second memory 722.
  • the display processor 720 may include a degradation compensation HW IP 724, and the degradation compensation HW IP 724 may include a memory controller 723 and a degradation compensation block 725.
  • the memory controller 723 may determine the display image stored in the first memory 721 and the stress information stored in the second memory 722.
  • the degree of deterioration of the display pixel may be input to the deterioration compensation block 725.
  • the degradation compensation block 725 may determine or receive a compensation criterion with reference to the stress information of the display pixels and the degradation information corresponding to each image, and determine the compensation degree of the display image based on the compensation criteria.
  • an electronic device may include a display 310 including at least one display pixel and at least one image pixel to be displayed through at least some display pixels of the at least one display pixel.
  • memory 350 for storing at least one deterioration information corresponding to the at least one image associated with a performance degradation that may be caused by a cumulative time that the at least one image pixel is to be displayed on the at least some display pixels.
  • a processor 320 and / or 340 wherein the processor 320 and / or 340 identifies a cumulative time for which a designated image of the at least one image is displayed through the display 310, Deterioration information corresponding to the designated image among the at least one deterioration information and the Compensating for at least a portion of data corresponding to at least one designated image pixel included in the designated image using the accumulated time at which the designated image is displayed, and displaying the at least partially compensated data through the at least some display pixels It can be set to.
  • the processor 320 and / or 340 may be configured to record, as stress information, an identifier of the designated image and a cumulative time for displaying the designated image.
  • the processor 320 and / or 340 may determine data of the data corresponding to the at least one image pixel. It may be set to compensate at least in part.
  • the processor 320 and / or 340 may change the changed image through the display 310 when a designated image set to be displayed on the display 310 of the at least one image is changed.
  • the information may be displayed, and the stress information may be updated based on an identifier of the changed image and a cumulative time for displaying the changed image.
  • the processor 320 and / or 340 may include a first memory 350 for storing an image being displayed on the display 310; And a second memory 350 for storing the stress information.
  • the communication circuit 330 may be further included, and the processor 320 and / or 340 may use the at least one degradation information corresponding to the at least one image using the communication circuit 330. It can be set to receive.
  • an electronic device may include a display 310 including display pixels, a memory 350 for storing at least one image and at least one degradation information corresponding to the at least one image, and a processor. 320 and / or 340, wherein the processor 320 and / or 340 records the cumulative time for displaying at least one image on the display 310 as stress information for the display 310, A first image set to be displayed on the display 310 among the at least one image, and a cumulative time for displaying the at least one image recorded in the stress information on the display 310 and the at least one image Compensating pixel data of at least one image pixel of the first image based on the deterioration information corresponding to The compensated pixel data may be set to be displayed using display pixels of the display 310.
  • the processor 320 and / or 340 may determine a degree of deterioration of the display pixels based on the stress information, and at least one of the first image based on the degree of deterioration of the display pixels. It can be set to compensate the pixel data of the image pixel of.
  • the processor 320 and / or 340 may identify at least one display pixel whose degree of deterioration among the display pixels is greater than or equal to a reference value, and the first and second display pixels corresponding to the identified at least one display pixel.
  • the pixel data of at least one image pixel of the image may be set to compensate based on a degree of deterioration of the display pixel.
  • the processor 320 and / or 340 may include a first memory 350 for storing the first image; And a second memory 350 for storing the stress information.
  • the processor 320 and / or 340 may display one of at least one image stored in the memory 350 on the display 310. It can be set to update the stored stress information.
  • At least one image stored in the memory 350 may be an image configured to be displayed when the electronic device operates in an always on display (AOD).
  • AOD always on display
  • the apparatus further includes a communication circuit 330, and the processor 320 and / or 340 may deteriorate the at least one corresponding to the at least one image using the communication circuit 330, respectively. It may be set to receive information from an external device.
  • the processor 320 and / or 340 may select one of the at least one image and display the image on the display 310 for a unit time, and the display while the selected image is displayed.
  • the display pixels of the display device 310 may be configured to determine the degree of deterioration of the display pixels and to generate deterioration information of the selected image based on the verification result.
  • FIG. 8 is a flowchart illustrating an image compensation method of an electronic device according to various embodiments of the present disclosure.
  • the illustrated method may be performed by the electronic device described above with reference to FIGS. 1 to 7, and a description of technical features as described above will be omitted.
  • the electronic device may store at least one image and at least one degradation information corresponding to the at least one image, respectively.
  • the deterioration information may be related to the degree to which the display pixels deteriorate as the corresponding image is displayed on the display of the electronic device.
  • An example of at least one image stored in the memory and corresponding degradation information, respectively, has been described with reference to FIG. 4.
  • the electronic device may record, as stress information, an ID of at least one image displayed on the display and a cumulative time of displaying each of the at least one image on the display.
  • the stress information may be updated as a specific image is displayed on the display, and the ID and cumulative display time of each displayed image may be continuously or periodically recorded.
  • the electronic device may store and update stress information in an internal memory (eg, RAM) of the display processor, or may store and update the stress information in a region of the memory of the electronic device.
  • the electronic device may identify a first image set to be displayed on the display among at least one image.
  • the electronic device may store the first image in the first memory of the display processor and store the changed image in the first memory when the image set to be displayed is changed.
  • the electronic device may compensate for pixel data of at least one image pixel of the first image based on the stress information.
  • the electronic device may determine a degree of deterioration of display pixels based on stress information and compensate pixel data of at least one image pixel of the first image based on the degree of deterioration of the identified display pixels. have. Since the stress information stores the accumulated display time of the images stored in the memory, and the deterioration information of each image indicates the degree of degradation of each display pixel per unit time, the display processor determines the degree of degradation of the display pixels from the stress information to the present. Can be.
  • the electronic device may identify at least one display pixel whose degree of degradation is greater than or equal to a reference value among the display pixels, and may include pixel data of at least one image pixel of the first image corresponding to the at least one identified display pixel. Can be compensated based on the degree of deterioration of the display pixel.
  • the electronic device may display the compensated pixel data using display pixels of the display.
  • FIG. 9 is a flowchart illustrating an image compensation method of an electronic device according to various embodiments of the present disclosure.
  • the illustrated method may be performed by the electronic device described above with reference to FIGS. 1 to 7, and the descriptions of the technical features described above will be omitted.
  • the electronic device may check the accumulated time when the first image is displayed on the display.
  • the accumulated time at which each image is displayed is recorded as stress information, and the electronic device (for example, the application processor 340) may check the accumulated time of the first image from the stress information.
  • the electronic device may compensate for at least a portion of data corresponding to at least one pixel of the first image by using the degradation information and the accumulated time in which the first image is displayed.
  • the electronic device determines the degree of deterioration of at least one pixel of the display using the deterioration information corresponding to the first image and the accumulated time, and considers the degree of deterioration to obtain data corresponding to the at least one pixel of the first image.
  • the display processor increases the pixel data of the image data corresponding to the deteriorated display pixel in the image data input from the application processor by the degree of deterioration and applies a driving current and / or a voltage corresponding to the compensated image data.
  • the display processor may display the compensated image by increasing the driving current and / or the voltage by the deterioration degree in the case of the deteriorated display pixel.
  • the electronic device may display data, at least partially compensated from the first image, through at least some display pixels.
  • an image compensation method of an electronic device may include at least one image and at least one degradation information corresponding to each of the at least one image, wherein the degradation information corresponds to an image on the display 310 of the electronic device.
  • an identifier of at least one image displayed on the display 310 and a cumulative time for each of the at least one image displayed on the display 310. Recording the information as stress information, identifying a first image set to be displayed on the display 310 among the at least one image, and the at least one image recorded in the stress information is displayed on the display 310.
  • a cumulative time displayed and corresponding to the at least one image Based on the deterioration information, an operation of compensating pixel data of at least one image pixel of the first image, and displaying the compensated pixel data using display pixels of the display 310. .
  • the operation of compensating the pixel data may include determining a degree of deterioration of the display pixels based on the stress information, and at least one of the first image based on the degree of deterioration of the display pixels. And compensating pixel data of an image pixel of the.
  • the operation of compensating the pixel data may include identifying at least one display pixel having a degree of deterioration among the display pixels greater than or equal to a reference value, and the first corresponding to the at least one identified display pixel. And compensating pixel data of at least one image pixel of the image based on a degree of deterioration of the display pixel.
  • the recording of the stress information may include updating the stress information as any one of at least one image stored in the memory 350 is displayed on the display 310. Can be.
  • the at least one stored image may be an image set to be displayed when the electronic device operates in an always on display (AOD).
  • AOD always on display
  • the method may further include receiving the at least one degradation information corresponding to each of the at least one image from an external device.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
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Abstract

Un dispositif électronique selon divers modes de réalisation peut comprendre : une unité d'affichage incluant au moins un pixel d'affichage ; au moins une image incluant au moins un pixel d'image à afficher par le biais d'au moins quelques pixels d'affichage du ou des pixels d'affichage ; une mémoire pour stocker au moins un élément d'informations de détérioration correspondant à la ou aux images, concernant une dégradation de performances, qui peut être causée selon un temps cumulé durant lequel le ou les pixels d'image doivent être affichés par le biais des au moins quelques pixels d'affichage ; et un processeur. Le processeur est configuré pour identifier le temps cumulé durant lequel une image désignée parmi la ou les images est affichée par le biais de l'unité d'affichage, compenser au moins en partie des données correspondant à au moins un pixel d'image désignée inclus dans l'image désignée à l'aide du temps cumulé durant lequel l'image désignée est affichée et des informations de détérioration correspondant à l'image désignée parmi le ou les éléments d'informations de détérioration, et afficher les données compensées au moins en partie par le biais des au moins quelques pixels d'affichage.
PCT/KR2019/002755 2018-03-09 2019-03-08 Procédé et dispositif électronique pour compenser une image sur la base d'un temps cumulé pendant lequel l'image est affichée par une unité d'affichage, et pour afficher une image compensée WO2019172722A1 (fr)

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KR20210101089A (ko) * 2020-02-07 2021-08-18 삼성전자주식회사 전자 장치의 디스플레이의 열화를 감소시키는 방법 및 그 방법을 적용한 폴더블 전자 장치
KR102673835B1 (ko) * 2020-02-10 2024-06-11 삼성전자주식회사 디스플레이의 열화를 보상하는 방법 및 그 방법을 적용한 전자 장치
KR20220017609A (ko) * 2020-08-05 2022-02-14 삼성전자주식회사 전자장치 및 그 제어방법
KR20220083395A (ko) 2020-12-11 2022-06-20 엘지디스플레이 주식회사 전계 발광 표시장치와 그 구동방법

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