WO2022177060A1 - Dispositif d'affichage et procédé pour le commander - Google Patents

Dispositif d'affichage et procédé pour le commander Download PDF

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Publication number
WO2022177060A1
WO2022177060A1 PCT/KR2021/003159 KR2021003159W WO2022177060A1 WO 2022177060 A1 WO2022177060 A1 WO 2022177060A1 KR 2021003159 W KR2021003159 W KR 2021003159W WO 2022177060 A1 WO2022177060 A1 WO 2022177060A1
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WIPO (PCT)
Prior art keywords
correction data
memory
display
display module
grayscale
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PCT/KR2021/003159
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English (en)
Korean (ko)
Inventor
김상원
서정렬
김영국
허정
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삼성전자주식회사
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Publication of WO2022177060A1 publication Critical patent/WO2022177060A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present disclosure relates to a display apparatus and a control method thereof, and more particularly, to a display apparatus including a plurality of display modules and a control method thereof.
  • Such a display device corrects grayscale data of an image signal according to characteristics of a plurality of light emitting devices included in a plurality of display modules to improve luminance uniformity or grayscale expression of a screen, and displays an image based on the corrected grayscale data Needs to be.
  • the conventional display apparatus stores correction data corresponding to the display module for each display module in the memory of the display module, and corrects the grayscale data of the image signal based on the correction data stored in the memory of each display module.
  • the conventional display device stores the correction data only in the memory of each display module, when the correction data stored in the memory of the display module is deformed, the correction data must be regenerated through a process for generating the correction data. There was also a problem.
  • the present disclosure has been made to solve the above problems, and an object of the present disclosure is to store correction data corresponding to a plurality of display modules in a memory of a first board of a display device, thereby providing a conventional display having a memory for each display module.
  • An object of the present invention is to provide a display device capable of reducing the cost of memory components and products compared to the device, and a method for controlling the same.
  • An object of the present invention is to provide a display device capable of recovering original correction data and a method for controlling the same.
  • a display device may include a plurality of display modules, a first memory in which first calibration data corresponding to the plurality of display modules are stored, and an image signal based on the first calibration data.
  • a first board including a timing controller that corrects grayscale data and controls light emission of a plurality of pixels included in the plurality of display modules based on the corrected grayscale data, and a second memory in which the first correction data is backed up and wherein the timing controller is configured to, when the first correction data stored in the first memory is not available, the image signal based on the first correction data backed up in the second memory. of gradation data can be corrected.
  • the timing controller may be configured to change the image signal based on the first correction data backed up in the second memory.
  • the grayscale data can be corrected.
  • the display apparatus further includes a communication unit, and the timing controller is configured to be configured to: when the first correction data stored in the first memory and the first correction data stored in the second memory cannot be used, the Receiving the first correction data backed up in the third memory through the communication unit from an external device including a third memory in which the first correction data stored in the first memory or the first correction data stored in the second memory is backed up, , the grayscale data of the image signal may be corrected based on the received first correction data.
  • the timing controller is configured to determine correction data corresponding to each of the plurality of display modules from among the first correction data based on the identification information of the plurality of display modules, and based on the location information of the plurality of display modules,
  • the grayscale data corresponding to each of the plurality of display modules is determined among the grayscale data of the image signal, and the grayscale data corresponding to each of the plurality of display modules is corrected based on the correction data corresponding to each of the plurality of display modules.
  • the timing controller may be configured to include grayscale data corresponding to each of the plurality of display modules based on information on a plurality of correction coefficients corresponding to a plurality of pixels included in the plurality of display modules included in the first correction data. can be corrected.
  • the first memory may further store second correction data corresponding to at least one display module different from the plurality of display modules
  • the timing controller may include: a first display module among the plurality of display modules; When the correction data corresponding to the first display module among the first correction data is changed to the correction data corresponding to the second display module among the second correction data as the display module of the display module is replaced with the second display module, the The grayscale data corresponding to the second display module among the grayscale data of the image signal may be corrected based on the changed correction data.
  • the correction data corresponding to the first display module among the first correction data stored in the second memory may be changed into correction data corresponding to the second display module and stored in the second memory.
  • the correction data corresponding to the first display module among the first correction data is transmitted from the outside when the first display module among the plurality of display modules is replaced with a third display module not included in the at least one display module. It may be changed to correction data corresponding to the received third display module.
  • the correction data corresponding to the first display module among the first correction data stored in the second memory may be changed into correction data corresponding to the third display module and stored in the second memory.
  • a method of controlling a display apparatus may include correcting grayscale data of an image signal based on first correction data corresponding to a plurality of display modules stored in a first memory, and the corrected grayscale. controlling light emission of a plurality of pixels included in the plurality of display modules based on data; and when the first correction data stored in the first memory is not available, the first correction data backed up in a second memory
  • the method may include correcting the grayscale data of the image signal based on the .
  • the correction data is not loaded from the first memory due to an error in the correction data stored in the first memory. Otherwise, the grayscale data of the image signal may be corrected based on the first correction data backed up in the second memory.
  • the first correction data stored in the first memory and the first correction data stored in the second memory are unavailable, the first correction data stored in the first memory or the second memory Receives first correction data backed up to the third memory from an external device including a third memory in which the stored first correction data is backed up, and corrects grayscale data of the image signal based on the received first correction data It may further include the step of
  • the step of correcting the grayscale data of the image signal based on the first correction data may include determining correction data corresponding to each of the plurality of display modules from among the first correction data based on the identification information of the plurality of display modules. and determine grayscale data corresponding to each of the plurality of display modules from among the grayscale data of the image signal based on the location information of the plurality of display modules, and divide grayscale data corresponding to each of the plurality of display modules into the plurality of grayscale data may be corrected based on correction data corresponding to each of the display modules of the .
  • the step of correcting the grayscale data of the image signal based on the first correction data may include: information on a plurality of correction coefficients corresponding to the plurality of pixels included in the plurality of display modules included in the first correction data. Based on this, grayscale data corresponding to each of the plurality of display modules may be corrected.
  • the first memory further stores second correction data corresponding to at least one display module different from the plurality of display modules
  • the control method includes: When the correction data corresponding to the first display module among the first correction data is changed to the correction data corresponding to the second display module among the second correction data as the display module of the display module is replaced with the second display module, the The method may further include correcting grayscale data corresponding to the second display module among grayscale data of an image signal based on the changed correction data.
  • the correction data corresponding to the first display module among the first correction data stored in the second memory may be changed into correction data corresponding to the second display module and stored in the second memory.
  • the correction data corresponding to the first display module among the first correction data is transmitted from the outside when the first display module among the plurality of display modules is replaced with a third display module not included in the at least one display module. It may be changed to correction data corresponding to the received third display module.
  • the correction data corresponding to the first display module among the first correction data stored in the second memory may be changed into correction data corresponding to the third display module and stored in the second memory.
  • the present disclosure can reduce the cost of memory components and products compared to a conventional display device having a memory for each display module.
  • the present disclosure recovers the original correction data through the correction data backed up in the memory of the second board without the need to perform a process for generating additional correction data when the correction data stored in the memory of the first board is deformed. can do.
  • the grayscale data of the image signal through the correction data stored in the first board or the second board without the need to separately perform a process for generating the correction data corresponding to the replaced display module may be corrected according to characteristics of a plurality of light emitting devices included in the replaced display module.
  • FIG. 1 is a diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 2 is a view for explaining a method of generating correction data according to an embodiment of the present disclosure.
  • FIG. 3 is a block diagram illustrating a display apparatus according to an embodiment of the present disclosure.
  • FIG. 4 is a view for explaining an embodiment of receiving correction data from an external device according to an embodiment of the present disclosure.
  • FIG. 5 is a diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 6 is a block diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 7 is a detailed block diagram illustrating a display device according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart illustrating a method of controlling a display apparatus according to an embodiment of the present disclosure.
  • FIG. 1 is a diagram illustrating a display device according to an embodiment of the present disclosure.
  • the display apparatus 100 may include a plurality of display modules.
  • the display apparatus 100 includes a first display module 110-1, a second display module 110-2, a third display module 110-3, and a fourth display module ( 110-4) may be included.
  • the plurality of display modules 110-1, 110-2, 110-3, and 110-4 arranged in a 2 by 2 arrangement of FIG. 1 is an embodiment, and the arrangement and number of display modules are different depending on the embodiment. can do.
  • Each display module constituting the display apparatus 100 may be, for example, an LED display module including an inorganic light emitting diode (LED).
  • the display module of the display device 100 includes a plurality of red LEDs, green LEDs, and blue LEDs that are sub-pixels, or a plurality of pixels that implement red LEDs, green LEDs, and blue LEDs that are sub-pixels into one chip. It may be implemented as an LED display module including.
  • the above-described LED may be a micro LED.
  • the micro LED is an LED having a size of about 5 to 100 micrometers, and may be a micro light emitting device that emits light by itself without a color filter.
  • a plurality of pixels included in the display module may be arranged in a matrix form (eg, M * N, where M and N are natural numbers).
  • the plurality of pixels may have a polygonal shape different from a rectangular shape.
  • LED display module is only an example, and the display module may be implemented with various display modules such as organic LED (OLED), active-matrix OLED (AMOLED), liquid crystal display (LCD), and the like.
  • OLED organic LED
  • AMOLED active-matrix OLED
  • LCD liquid crystal display
  • the display apparatus 100 may display an image through a plurality of display modules.
  • the image may be an image corresponding to an image signal received from an external device (eg, a set-top box, a computer, a server, etc.), as well as an image pre-stored in the display apparatus 100 .
  • an external device eg, a set-top box, a computer, a server, etc.
  • the display apparatus 100 may determine grayscale data corresponding to each display module from the image signal based on the location information of each display module.
  • the location information of each display module may be pre-stored in a factory stage for manufacturing a product, and, according to an embodiment, may also be stored based on a user input after completion of the product.
  • the display apparatus 100 may control light emission of a plurality of pixels included in the plurality of display modules based on grayscale data corresponding to each display module determined based on location information of each display module. For example, the display apparatus 100 may determine first grayscale data corresponding to the location information of the first display module 110-1 from the image signal based on the location information of the first display module 110-1. can In addition, the display apparatus 100 controls the light emission of a plurality of pixels included in the first display module 110-1 based on the first grayscale data to display the first image through the first display module 110-1. can be displayed Similarly, the display apparatus 100 determines second grayscale data corresponding to the location information of the second display module 110-2 from the image signal, and displays a second image based on the second grayscale data.
  • Display through the module 110-2 determine third grayscale data corresponding to the position information of the third display module 110-3 from the image signal, and generate a third image based on the third grayscale data It is displayed through the display module 110-3, and the fourth grayscale data corresponding to the position information of the fourth display module 110-4 is determined from the image signal, and a fourth image is generated based on the fourth grayscale data. 4 can be displayed through the display module 110-4.
  • the display apparatus 100 may display the entire image in which the first image, the second image, the third image, and the fourth image are combined through the plurality of display modules.
  • the display apparatus 100 may correct grayscale data of an image signal based on the correction data and display an image based on the corrected grayscale data.
  • a method of generating the correction data will be first described, and then a method of storing and using the correction data will be described.
  • FIG. 2 is a view for explaining a method of generating correction data according to an embodiment of the present disclosure.
  • the display module 1 may display a test image for generating correction data under the control of the processor.
  • the test image is an image displayed based on the test image data received from the second external device 300 and may be, for example, a white color image.
  • the present invention is not necessarily limited thereto, and the test image may be an image of various colors, such as an image of a red color or an image of a green color.
  • the test image may be a pattern image including a plurality of regions having different grayscale values.
  • the first external device 200 is a device for measuring luminance, and may capture a test image displayed on the display module 1 .
  • the first external device 200 may generate information on the luminance value of each pixel of the display module 1 through color analysis of the photographed test image.
  • the first external device 200 may generate information on the luminance values of each of the R sub-pixel, the G sub-pixel, and the B sub-pixel of the display module 1 through analysis of the test image.
  • the first external device 200 may generate information on luminance values of pixels including the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • the first external device 200 may divide the screen of the display module 1 into a plurality of regions based on the number of pixels and the pixel size, and measure the luminance of each of the plurality of regions.
  • the first external device 200 may divide the screen into a plurality of regions based on the number of sub-pixels and the size of the sub-pixels, and measure the luminance of each of the plurality of regions.
  • the first external device 200 may be a spectral photometer that measures the luminance of the display module 1 by detecting the intensity of light passing through the optical filter.
  • the first external device 200 separates light into wavelength components and uses various luminance meters such as a photoelectric colorimeter that measures the luminance of the display module 1 by detecting the intensity of each wavelength component. can be implemented.
  • the second external device 300 may generate correction data based on the information on the luminance value for each pixel (or sub-pixel) generated by the first external device 100 .
  • the second external device 300 may communicate with the first external device 200 to receive information on a luminance value for each pixel (or sub-pixel) measured by the first external device 200 . .
  • the second external device 300 determines the target luminance of light emitted by the plurality of pixels (or sub-pixels) based on the information on the grayscale values for each pixel (or sub-pixel) included in the test image data. The value may be calculated, and correction data may be generated based on a difference between a target luminance value for each pixel (or sub-pixel) and a luminance value for each pixel (or sub-pixel) received from the first external device 200 .
  • the correction data may include information on a position of a pixel (or sub-pixel) to be corrected and information on a correction coefficient for each pixel (or sub-pixel).
  • the second external device 300 determines a pixel (or sub-pixel) emitting light having a luminance value different from the target luminance value as a pixel (or sub-pixel) to be corrected, and the corresponding pixel (or sub-pixel).
  • a correction coefficient may be determined based on a ratio of the target luminance value of the corresponding pixel (or sub-pixel) to the luminance value of the corresponding pixel (or sub-pixel).
  • the correction coefficient may be, for example, a gain ratio or a duty ratio to be applied to a current value input to a pixel to be corrected.
  • the correction data may include information on correction coefficients to be applied to grayscale values of a plurality of pixels.
  • identification information of the display module 1 may be matched with the correction data.
  • the identification information may be, for example, a unique identification number (eg, a serial number or a module number) of the display module 1 .
  • the second external device 300 may match the unique identification number of the display module 1 to the correction data.
  • the second external device 300 may generate correction data for each display module.
  • the second external device 300 may transmit correction data corresponding to the plurality of display modules to the display device 100 .
  • the second external device 300 may be communicatively connected to the display device 100 .
  • the present disclosure may generate correction data corresponding to at least one display module other than the plurality of display modules included in the display apparatus 100 .
  • the present disclosure provides correction data corresponding to the 49th to 54th display modules as well as correction data corresponding to the first to forty-eighth display modules. data can be generated.
  • the 49th to 54th display modules may be referred to as sub-display modules or service display modules according to embodiments. This is to prepare for a case where some of the plurality of display modules included in the display apparatus 100 are replaced, and a related description will be described later with reference to FIG. 3 .
  • FIG. 3 is a block diagram illustrating a display apparatus according to an embodiment of the present disclosure.
  • the display apparatus 100 includes a plurality of display modules 110-1, 110-2, .., 110-n, a first board 120, and a second The board 130 may be included.
  • the first board 120 is a timing controller 122 that controls the plurality of pixels included in the first memory 121 and the plurality of display modules 110-1, 110-2, .., 110-n. may include.
  • the first board 120 may be referred to as a timing controller board or a Ticon board.
  • the timing controller 122 may be included in a board different from the first board 120 .
  • the first memory 121 may store correction data corresponding to the plurality of display modules.
  • the correction data includes information on a correction factor (eg, a gain ratio or a duty ratio) to be applied to a current value input to a plurality of pixels (or sub-pixels) constituting a plurality of display modules as described above. can do.
  • the correction data may include information on correction coefficients to be applied to grayscale values of a plurality of pixels.
  • the display apparatus 100 includes a first display module 110-1, a second display module 110-2, a third display module 110-3, and a fourth display module 110- 4), the first memory 121 includes correction data corresponding to the first display module 110-1, correction data corresponding to the second display module 110-2, and the third display module 110 Correction data corresponding to -3) and correction data corresponding to the fourth display module 110-4 may be stored.
  • identification information of the display module may be matched with each correction data. For example, the unique identification number of the first display module 110-1 may be matched with the correction data corresponding to the first display module 110-1, and the correction data corresponding to the second display module 110-2 may be matched.
  • the data may be matched with a unique identification number of the second display module 110 - 2 .
  • the unique identification number of the third display module 110-3 is matched with the correction data corresponding to the third display module 110-3, and the correction corresponding to the fourth display module 110-4 is matched.
  • the data may be matched with a unique identification number of the fourth display module 110 - 4 .
  • the timing controller 122 may correct the grayscale data of the image signal based on the correction data stored in the first memory 121 .
  • the timing controller 122 may determine grayscale data corresponding to each display module from among the grayscale data of the image signal based on the location information of the plurality of display modules.
  • the location information of the display module may be stored in the first memory 121 as well as in a memory separate from the first memory 121 .
  • the display apparatus 100 includes a first display module 110-1, a second display module 110-2, a third display module 110-3, and a fourth display module 110- 4), the timing controller 122 may determine grayscale data corresponding to each display module from the image signal based on the location information of each display module. That is, the timing controller 122 determines the first grayscale data corresponding to the first display module 110-1 from the image signal based on the position information of the first display module 110-1, and the second display module 110-1.
  • Second grayscale data corresponding to the second display module 110-2 is determined from the image signal based on the location information of 110-2, and the image is based on the location information of the third display module 110-3 Determines third grayscale data corresponding to the third display module 110-3 from the signal, and transmits the image signal to the fourth display module 110-4 based on the location information of the fourth display module 110-4 The corresponding fourth grayscale data may be determined.
  • the timing controller 122 may determine correction data corresponding to each display module among the correction data based on the identification information of the plurality of display modules.
  • identification information of the display module may be matched with the correction data.
  • a unique identification number of the first display module 110 - 1 may be matched with the correction data corresponding to the first display module 110 - 1 .
  • the timing controller 122 corresponds to the first display module 110 - 1 with the correction data matched with the unique identification number of the first display module 110 - 1 among the correction data stored in the first memory 121 . It can be judged from the corrected data.
  • the timing controller 122 transmits, to the second display module 110 - 2 , the correction data matched with the unique identification number of the second display module 110 - 2 among the correction data stored in the first memory 121 . It is determined as the corresponding correction data, and the correction data matched with the unique identification number of the third display module 110-3 is determined as the correction data corresponding to the third display module 110-3, and the fourth display module ( The correction data to which the unique identification number of 110-4) is matched may be determined as the correction data corresponding to the fourth display module 110-4.
  • timing controller 122 may correct grayscale data corresponding to each display module based on the correction data corresponding to each display module.
  • the timing controller 122 The position of the pixel to be corrected among the plurality of pixels included in the first display module 110-1 and the correction coefficient of the pixel to be corrected are calculated based on the correction data corresponding to the first display module 110-1. may be determined, and the grayscale value of the pixel to be corrected may be corrected according to the correction coefficient.
  • the timing controller 122 sets the grayscale value of the corresponding pixel to a It is possible to control the driver IC so that it is corrected to *b (eg, 80) and the corresponding pixel emits light having a grayscale value of a*b.
  • the timing controller 122 corrects the grayscale data corresponding to the second display module 110-2 to the correction data corresponding to the second display module 110-2, and the third display module 110
  • the grayscale data corresponding to -3) is corrected with the correction data corresponding to the third display module 110-3
  • the grayscale data corresponding to the fourth display module 110-4 is corrected by the fourth display module 110 It can be corrected with correction data corresponding to -4).
  • the timing controller 122 may correct the magnitude of the current output to each pixel (or sub-pixel) according to the correction coefficient according to an embodiment. will be.
  • correction data including information on correction coefficients for each pixel may be stored in the first memory 121 according to an embodiment.
  • the timing controller 122 may correct the grayscale data of the image signal based on the correction data including information on the correction coefficient for each sub-pixel.
  • the present disclosure stores correction data corresponding to a plurality of display modules in the memory of the first board, unlike a conventional display device having a memory for each display module, thereby reducing the cost of memory components and products.
  • the display apparatus 100 may further include a second board 130 including a second memory 131 .
  • the second board 130 may be a system board including a processor 132 as shown in FIG. 3 .
  • the processor 132 may be provided on a board separate from the second board 130 .
  • the correction data stored in the first memory 121 may be backed up in the second memory 131 . That is, the same data as the correction data stored in the first memory 121 may be stored in the second memory 131 .
  • the correction data may be backed up to the second memory 131 according to a user command in the manufacturing stage of the display apparatus 100 , and may be backed up to the second memory 131 according to a user command after completion of manufacturing. have.
  • the timing controller 122 may correct the grayscale data of the image signal based on the correction data stored in the second memory 131 .
  • the timing controller 122 may use the correction data stored in the second memory 131 based on the correction data stored in the second memory 131 .
  • the timing controller 122 may correct the grayscale data of the image signal based on the correction data stored in the second memory 131 .
  • the deformation or loss of the first correction data may be determined, for example, by comparing the correction data stored in the first memory 121 and the correction data stored in the second memory 131 .
  • the timing controller 122 restores the correction data stored in the first memory 132 to the correction data stored in the second memory 131 (or , can be changed). In addition, the timing controller 122 may correct the grayscale data of the image signal based on the correction data of the first memory 121 restored by the correction data stored in the second memory 131 .
  • the original correction is performed through the correction data backed up in the second memory 131 without the need to perform a process for generating additional correction data. data can be recovered.
  • the display apparatus 100 may communicate with the external apparatus 400 and receive correction data for correcting grayscale data of an image signal from the external apparatus 400 .
  • the display apparatus 100 may further include a communication unit including a wired communication network module or a wireless communication network module.
  • the external device 400 is an electronic device that communicates with the display device 100 such as a server or a PC.
  • the external device 400 includes a third memory, and the third memory includes a first memory of the display device 100 .
  • the correction data stored in (121) can be backed up.
  • the correction data of the third memory may be backed up to the third memory according to a user command in the manufacturing stage of the display device 100 , as well as the third memory according to the user command after the manufacturing of the display device 100 is completed. may be backed up in
  • the timing controller 122 transmits the data from an external device including the third memory to the third memory through the communication unit.
  • the backed-up correction data may be received, and the grayscale data of the image signal may be corrected based on the received correction data.
  • the reception of the backed-up correction data may be performed by a user command.
  • the correction data stored in the first memory 121 and the second memory 131 are deformed, there is no need to perform a process for generating additional correction data, and the correction data backed up in the third memory to recover the original calibration data.
  • the first memory 121 may further store correction data corresponding to at least one sub-display module (or service display module) different from the plurality of display modules constituting the display apparatus 100 .
  • correction data corresponding to a plurality of display modules constituting the display apparatus 100 will be referred to as first correction data
  • correction data corresponding to at least one sub-display module will be referred to as second correction data.
  • the display apparatus 100 includes a first display module 110-1, a second display module 110-2, a third display module 110-3, and a fourth display module 110- 4), the first memory 121 includes the first correction data corresponding to the first to fourth display modules 110-1, 110-2, 110-3, and 110-4 and the fifth to fourth display modules 110-4. 7
  • the second correction data corresponding to the display module may be stored.
  • the fifth to seventh display modules are sub-display modules, and for example, the first to fourth display modules 110 - 1 , 110 - 2 , 110 - 3 and 110 - 4 constituting the display apparatus 100 . It could be a display module pre-manufactured at the factory level in case one of them fails.
  • the fifth to seventh display modules are exemplified here as sub-display modules, the number of sub-display modules may be different from this according to embodiments.
  • the correction data corresponding to the first display module may be changed to correction data corresponding to the fifth display module among the second correction data.
  • the change of the correction data may be performed by a user input before or after the replacement of the display module.
  • the timing controller 122 converts the grayscale data corresponding to the fifth display module among the grayscale data of the image signal. Correction may be performed based on the changed correction data. That is, after the first display module is replaced with the fifth display module, the timing controller 122 may correct the grayscale data corresponding to the fifth display module based on the correction data corresponding to the fifth display module.
  • the correction data corresponding to the first display module among the first correction data stored in the second memory 131 may be changed to the correction data corresponding to the fifth display module and stored in the second memory 131 .
  • the correction data corresponding to the first display module among the first correction data stored in the second memory 131 is the correction data corresponding to the fifth display module by a user input before or after the display module is replaced. can be changed to
  • the timing controller 122 may correct the grayscale data of the image signal based on the correction data of the second memory 131 . .
  • the gray level of the image signal through the correction data stored in the first board or the second board without the need to separately perform a process for generating the correction data corresponding to the replaced display module.
  • Data may be corrected according to characteristics of a plurality of light emitting devices included in the replaced display module.
  • the first display module among the plurality of display modules constituting the display apparatus 100 may be replaced with a new display module other than the sub-display module.
  • the fourth display module may cause an error In case of occurrence, it may be replaced with an eighth display module that is a new display module.
  • the correction data corresponding to the fourth display module among the first correction data may be changed to the correction data corresponding to the eighth display module.
  • the display apparatus 100 receives correction data corresponding to the eighth display module from a portable storage medium such as USB, and generates correction data corresponding to the fourth display module among the first correction data based on a user command. 8 It can be changed to the correction data corresponding to the display module.
  • the correction data stored in the second memory 131 may be changed based on the change of the correction data stored in the first memory 121 . That is, in the above-described embodiment, the correction data corresponding to the fourth display module stored in the second memory 131 may be changed to the correction data corresponding to the eighth display module based on a user input.
  • the present disclosure may correct the grayscale data of the image signal based on the correction data received from the outside even when the display module is replaced with a new display module instead of the sub-display module.
  • the display apparatus 100 may include a plurality of first boards 120 according to an embodiment.
  • the display apparatus 100 includes a plurality of pixels greater than or equal to the number controllable by one timing controller.
  • the display apparatus 100 includes first to sixteenth display modules 110-1, 110-2, 110-3, 110-4, and 110-5. , 110-6, 110-7, 110-8, 110-9, 110-10, 110-11, 110-12, 110-13, 110-14, 110-15, 110-16). . And, as shown in FIG.
  • the display device 100 includes the first to eighth display modules 110-1, 110-2, 110-3, 110-4, 110-5, 110-6, 110-
  • the 1-1 board 120-1 and the ninth to sixteenth display modules 110-9, 110-10, 110-11 including the timing controller 122-1 for controlling the 7 and 110-8 , 110-12, 110-13, 110-14, 110-15, 110-16 may include a 1-2-th board 120-2 including a timing controller 122-2 for controlling the .
  • the timing controller 122-1 of the 1-1 board 120-1 may correct the grayscale data of the image signal based on the correction data stored in the 1-1 memory 121-1.
  • the grayscale data of the image signal is the first to eighth display modules 110-1, 110-2, 110-3, 110-4, 110-5, 110-6, 110-7, and 110-8, respectively.
  • the correction data stored in the 1-1 memory 121-1 is the first to eighth display modules 110-1, 110-2, 110-3, 110-4, 110 -5, 110-6, 110-7, 110-8) may be correction data.
  • the correction data stored in the 1-1 memory 121-1 is the first to eighth display modules 110-1, 110-2, 110-3, 110-4, 110-5, 110-6, 110 -7, 110-8) may include information on a plurality of correction coefficients corresponding to a plurality of pixels included in each.
  • the timing controller 122 - 2 of the 1-2 th board 120 - 2 may correct the grayscale data of the image signal based on the correction data stored in the 1-2 th memory 121 - 2 .
  • the grayscale data of the image signal is the ninth to sixteenth display modules 110-9, 110-10, 110-11, 110-12, 110-13, 110-14, 110-15, and 110-16, respectively. may be grayscale data corresponding to
  • the correction data stored in the 1-2 memory 121-2 is the ninth to sixteenth display modules 110-9, 110-10, 110-11, 110-12, 110 -13, 110-14, 110-15, 110-16) may be correction data.
  • the correction data stored in the 1-2 memory 121-2 is the ninth to sixteenth display modules 110-9, 110-10, 110-11, 110-12, 110-13, 110-14, 110 -15, 110-16) may include information on a plurality of correction coefficients corresponding to a plurality of pixels included in each.
  • the first to eighth display modules 110-1, 110-2, 110-3, 110- stored in the 1-1 memory 121-1. 4, 110-5, 110-6, 110-7, 110-8) and the ninth to sixteenth display modules 110-9 and 110- stored in the 1-2-th memory 121-2 and the correction data corresponding to (110-7, 110-8) 10, 110-11, 110-12, 110-13, 110-14, 110-15, 110-16) may be backed up and stored.
  • the processor 132 of the second board 130 transmits a control signal for displaying an image corresponding to an image signal received from the outside to the timing controller 122-1 of the 1-1 board 120-1 and It can be transmitted to the timing controller 122-2 of the 1-2-th board 120-2.
  • the second board 130 of the second board 130 is not used.
  • the gradation data of the image signal may be corrected by loading the correction data stored in the memory 131
  • the timing controller 122 - 2 of the 1-2 th board 120 - 2 is the 1-2 th memory 121 - 2 .
  • the grayscale data of the image signal may be corrected by loading the correction data stored in the second memory 131 of the second board 130 .
  • the correction data stored in the second memory 131 may be backed up to an external device (eg, a server, a PC, etc.), and the display device 100 may display the correction data stored in the display device 100 .
  • an external device eg, a server, a PC, etc.
  • correction data may be received from an external device, and grayscale data of an image signal may be received based on the received correction data.
  • FIG. 7 is a detailed block diagram illustrating a display device according to an embodiment of the present disclosure.
  • the display apparatus 100 includes a plurality of display modules 110-1, 110-2, .., 110-n, a first board 120, and a second It may include a board 130 , a communication unit 140 , a manipulation unit 150 , an interface 160 , a microphone 170 , and a speaker 180 .
  • a board 130 may include a board 130 , a communication unit 140 , a manipulation unit 150 , an interface 160 , a microphone 170 , and a speaker 180 .
  • the first memory 121 may store correction data corresponding to the plurality of display modules.
  • the first memory 121 may be implemented with various types of storage media.
  • the first memory 121 may be a nonvolatile memory device such as a read only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (EPROM), or a flash memory.
  • ROM read only memory
  • PROM programmable read only memory
  • EPROM erasable programmable read only memory
  • flash memory or a volatile memory device such as a random access memory (RAM), or a storage device such as a hard disk or an optical disk.
  • RAM random access memory
  • the second memory 131 may store an operating system (OS) for controlling overall operations of the components of the display apparatus 100 and commands or data related to components of the display apparatus 100 . Also, the second memory 131 may store correction data corresponding to the plurality of display modules. According to an embodiment, the above-described operating system and the like may be stored in a memory separate from the second memory 131 .
  • OS operating system
  • the second memory 131 may store correction data corresponding to the plurality of display modules. According to an embodiment, the above-described operating system and the like may be stored in a memory separate from the second memory 131 .
  • the processor 132 may control a plurality of hardware or software components of the display apparatus 100 by using various commands or data stored in the second memory 131 , and may receive data received from at least one of the other components.
  • a command or data may be loaded into the volatile memory for processing, and various data may be stored in the non-volatile memory.
  • the second memory 131 may be implemented with various types of storage media.
  • the second memory 131 may be a non-volatile memory device such as a read only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (EPROM), or a flash memory.
  • ROM read only memory
  • PROM programmable read only memory
  • EPROM erasable programmable read only memory
  • flash memory or a flash memory.
  • RAM random access memory
  • storage device such as a hard disk or an optical disk.
  • the communication unit 140 may communicate with various electronic devices according to various types of communication methods.
  • the communication unit 140 may include a communication module such as a short-range wireless communication module (not shown) or a wireless LAN communication module (not shown).
  • the short-range wireless communication module (not shown) is a communication module that wirelessly performs data communication with an electronic device located in a short distance, for example, a Bluetooth module, a ZigBee module, and a Near Field Communication (NFC) module. ) module, etc.
  • the wireless LAN communication module (not shown) may be a module that is connected to an external network and performs communication according to a wireless communication protocol such as WiFi or IEEE.
  • the communication unit 140 performs communication by accessing a mobile communication network according to various mobile communication standards such as 3rd Generation (3G), 3rd Generation Partnership Project (3GPP), Long Term Evoloution (LTE), 5th Generation (5G), etc. It may include a mobile communication module.
  • the communication unit 140 may include at least one of a wired communication module (not shown) such as Universal Serial Bus (USB), Institute of Electrical and Electronics Engineers (IEEE) 1394, RS-232, and the like, and receives TV broadcasts. It may include a broadcast receiving module that
  • the communication unit 140 may receive correction data corresponding to a plurality of display modules (which may include the sub-display module described above) for configuring the display apparatus 100 from an external device,
  • the external device may be various electronic devices such as a server, a PC, and a portable storage device.
  • the manipulation unit 150 may be implemented as a touch screen, a touch pad, a key button, a key pad, or the like.
  • the interface 160 may be a USB port to which a USB connector can be connected, or an input port for connecting to various external terminals such as a headset, a mouse, and a LAN.
  • the microphone 170 may receive a user's voice.
  • the user's voice may be a voice for executing a specific function of the display apparatus 100 .
  • the user's voice may be a user's voice requesting to play an image.
  • the processor 132 may analyze the user's voice through a Speech to Text (STT) algorithm and provide response information corresponding to the user's voice.
  • STT Speech to Text
  • the response information may be information received through an external server, as well as information generated by the display apparatus 100 itself.
  • the speaker 180 may output various audio signals on which various processing operations such as decoding, amplification, and noise filtering have been performed by an audio processing unit (not shown). Also, the speaker 180 may output various notification sounds or voice messages.
  • the modular display apparatus 100 receives a broadcast signal received from a broadcast receiver (not shown) and a broadcast receiver (not shown) that receives a broadcast signal from a broadcasting station or satellite by wire or wirelessly, an image signal, an audio signal, and an additional information signal. It may further include a signal separation unit (not shown) to separate the signal, an A/V processing unit (not shown) for performing video decoding and video scaling on an image signal, and performing audio decoding on an audio signal.
  • FIG. 8 is a flowchart illustrating a method of controlling a display apparatus according to an embodiment of the present disclosure.
  • the display apparatus 100 may correct the grayscale data of the image signal based on the first correction data corresponding to the plurality of display modules stored in the first memory ( S810 ).
  • the first correction data may include first correction data corresponding to a plurality of display modules constituting the display apparatus 100 .
  • the first correction data may further include second correction data corresponding to the plurality of sub-display modules.
  • the display apparatus 100 determines correction data corresponding to each of the plurality of display modules among the first correction data based on the identification information of the plurality of display modules, and based on the location information of the plurality of display modules, It is possible to determine grayscale data corresponding to each of the plurality of display modules from among the grayscale data of the image signal.
  • the display apparatus 100 may correct grayscale data corresponding to each of the plurality of display modules based on the correction data corresponding to each of the plurality of display modules. For example, the display apparatus 100 may determine a position of a pixel to be corrected among a plurality of pixels included in the first display module 110 - 1 based on correction data corresponding to the first display module 110 - 1 .
  • the display apparatus 100 may correct the magnitude of the current output to the pixel (or sub-pixel) to be corrected according to the correction coefficient.
  • the display apparatus 100 may control light emission of a plurality of pixels included in the plurality of display modules based on the corrected grayscale data ( S820 ). For example, the display apparatus 100 controls the timing controller to output current to a plurality of pixels (or sub-pixels) of each display module based on the corrected grayscale data, and accordingly, each display module transmits the corrected grayscale data An image corresponding to can be displayed.
  • the display apparatus 100 may correct the grayscale data of the image signal based on the first correction data backed up in the second memory. For example, when the first correction data stored in the first memory is not loaded, or when loss or deformation of the first correction data stored in the first memory occurs, the display apparatus 100 may display the first correction data backed up in the second memory. 1 The grayscale data of the image signal may be corrected based on the correction data.
  • the loss or deformation of the first correction data may be determined, for example, by comparing the correction data stored in the first memory and the correction data stored in the second memory.
  • various embodiments of the present disclosure described above may be performed through an embedded server provided in the display device or a server external to the display device.
  • a non-transitory computer readable medium in which a program for sequentially executing the method of controlling a display device according to the present disclosure is stored may be provided.
  • the non-transitory readable medium refers to a medium that stores data semi-permanently, rather than a medium that stores data for a short moment, such as a register, cache, memory, etc., and can be read by a device.
  • a non-transitory readable medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

Un dispositif d'affichage et un procédé pour le commander sont divulgués. Le dispositif d'affichage comprend : une pluralité de modules d'affichage ; une première carte comprenant une première mémoire dans laquelle des premières données de correction correspondant à la pluralité de modules d'affichage sont stockées ainsi qu'un dispositif de commande de synchronisation qui corrige les données de gradation d'un signal d'image sur la base des premières données de correction et qui commande l'émission de lumière d'une pluralité de pixels inclus dans la pluralité de modules d'affichage sur la base des données de gradation corrigées ; et une seconde carte comprenant une seconde mémoire dans laquelle les premières données de correction sont sauvegardées, le dispositif de commande de synchronisation pouvant corriger, lorsque les premières données de correction stockées dans la première mémoire ne sont pas disponibles, les données de gradation du signal d'image sur la base des premières données de correction qui sont sauvegardées dans la seconde mémoire.
PCT/KR2021/003159 2021-02-18 2021-03-15 Dispositif d'affichage et procédé pour le commander WO2022177060A1 (fr)

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KR1020210021655A KR20220118038A (ko) 2021-02-18 2021-02-18 디스플레이 장치 및 그 제어 방법

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150010409A (ko) * 2013-07-19 2015-01-28 엘지전자 주식회사 이동 단말기 및 이의 제어방법
KR20170026878A (ko) * 2015-08-31 2017-03-09 엘지디스플레이 주식회사 멀티비전 및 그의 구동방법
KR101741638B1 (ko) * 2010-08-12 2017-05-30 삼성전자 주식회사 디스플레이장치 및 그 영상보정방법
WO2019092774A1 (fr) * 2017-11-07 2019-05-16 三菱電機株式会社 Système d'affichage, dispositif d'affichage et dispositif de commande d'affichage
KR102030438B1 (ko) * 2019-03-26 2019-11-08 박종철 디스플레이 제어 시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101741638B1 (ko) * 2010-08-12 2017-05-30 삼성전자 주식회사 디스플레이장치 및 그 영상보정방법
KR20150010409A (ko) * 2013-07-19 2015-01-28 엘지전자 주식회사 이동 단말기 및 이의 제어방법
KR20170026878A (ko) * 2015-08-31 2017-03-09 엘지디스플레이 주식회사 멀티비전 및 그의 구동방법
WO2019092774A1 (fr) * 2017-11-07 2019-05-16 三菱電機株式会社 Système d'affichage, dispositif d'affichage et dispositif de commande d'affichage
KR102030438B1 (ko) * 2019-03-26 2019-11-08 박종철 디스플레이 제어 시스템

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