WO2020140277A1 - 用于显示装置的亮度不均补偿的方法及相应的显示装置 - Google Patents

用于显示装置的亮度不均补偿的方法及相应的显示装置 Download PDF

Info

Publication number
WO2020140277A1
WO2020140277A1 PCT/CN2019/070443 CN2019070443W WO2020140277A1 WO 2020140277 A1 WO2020140277 A1 WO 2020140277A1 CN 2019070443 W CN2019070443 W CN 2019070443W WO 2020140277 A1 WO2020140277 A1 WO 2020140277A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
brightness
brightness compensation
compensation data
main board
Prior art date
Application number
PCT/CN2019/070443
Other languages
English (en)
French (fr)
Inventor
李奇峰
兰传艳
喻勇
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN201980000021.4A priority Critical patent/CN110301000B/zh
Priority to US16/642,653 priority patent/US11127356B2/en
Priority to PCT/CN2019/070443 priority patent/WO2020140277A1/zh
Publication of WO2020140277A1 publication Critical patent/WO2020140277A1/zh

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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 using controlled light sources
    • G09G3/30Control 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 using controlled light sources using electroluminescent panels
    • G09G3/32Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control 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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3275Details of drivers for data electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0257Reduction of after-image effects
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0285Improving the quality of display appearance using tables for spatial correction of display data
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • G09G2320/045Compensation of drifts in the characteristics of light emitting or modulating elements
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/08Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00Aspects of interface with display user
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/16Calculation or use of calculated indices related to luminance levels in display data
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10Intensity circuits

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a method for uneven brightness compensation of a display device and a corresponding display device.
  • active matrix organic light emitting diode Active-matrix organic light-emitting diode
  • AMOLED active matrix organic light emitting diode
  • AMOLED display panels result in uneven brightness (mura) due to problems such as production processes or long-term use, resulting in afterimages that affect the display effect of the display panel. Therefore, it is necessary to compensate for the uneven brightness of the AMOLED display panel.
  • brightness compensation data is calculated by a display drive integrated circuit (DDIC) of the display panel and stored in an additional storage device of DDIC.
  • DDIC display drive integrated circuit
  • the embodiments of the present disclosure provide a method for uneven brightness compensation of a display device and a corresponding display device.
  • a method for uneven brightness compensation of a display device includes a display screen, a data driving circuit, and a main board, wherein the main board stores first brightness compensation data for the display screen
  • the method includes: the data driving circuit obtains the first brightness compensation data from the motherboard; and the data driving circuit adjusts the image data according to the first brightness compensation data.
  • the method further includes: when the usage time of the display screen reaches the usage time threshold, the main board generates second brightness compensation data, and stores the second brightness compensation data to replace the first brightness compensation data. Then, the data driving circuit obtains the second brightness compensation data from the main board, and adjusts the image data according to the second brightness compensation data.
  • the method further includes: when the usage time of the display screen reaches the usage time threshold, the main board generates and stores third brightness compensation data. Then, the data driving circuit obtains the first brightness compensation data and the third brightness compensation data from the main board, and adjusts the image data according to the first brightness compensation data and the third brightness compensation data.
  • the method further includes: in response to user input information, the main board generates second brightness compensation data, and stores the second brightness compensation data to replace the first brightness compensation data. Then, the data driving circuit obtains the second brightness compensation data from the main board, and adjusts the image data according to the second brightness compensation data.
  • the method further includes: in response to user input information, the main board generates third brightness compensation data. Then, the data driving circuit obtains the first brightness compensation data and the third brightness compensation data from the main board, and adjusts the image data according to the first brightness compensation data and the third brightness compensation data.
  • the user input information instructs to start the update of the brightness compensation data.
  • the user input information also indicates the area to which the brightness compensation data is updated.
  • generating the second brightness compensation data by the main board includes: generating third brightness compensation data based on the threshold voltage drift characteristic of the driving transistor of the display screen and the light emission attenuation characteristic of the light emitting device; and based on the first brightness compensation data And the third brightness compensation data to generate second brightness compensation data.
  • the main board generates the third brightness compensation data based on the threshold voltage drift characteristic of the driving transistor of the display screen and the light emission attenuation characteristic of the light emitting device.
  • the display screen is divided into a plurality of compensation areas.
  • the first brightness compensation data is generated by the data driving circuit through the following operations and stored in the main board: acquiring the current brightness value of each of the plurality of compensation areas; and based on the current brightness value and the desired brightness of the plurality of compensation areas Value to generate the first brightness compensation data.
  • acquiring the current brightness value of each of the plurality of compensation areas includes: acquiring the current brightness value of each pixel unit of the display screen; and for each compensation area To determine that the current brightness value of the compensation area is the current brightness value of the corresponding pixel unit.
  • acquiring the current brightness value of each of the multiple compensation areas includes: acquiring the current brightness value of each pixel unit of the display screen; for each compensation area To determine the current brightness value of the compensation area as the average value, weighted average value or maximum value of the current brightness values of the corresponding multiple pixel units.
  • the interface between the motherboard and the data driving circuit uses any one of the Mobile Industry Processor Interface (MIPI) protocol, Low Voltage Differential Signaling (LVDS) protocol, and Embedded Display Interface (EDP).
  • MIPI Mobile Industry Processor Interface
  • LVDS Low Voltage Differential Signaling
  • EDP Embedded Display Interface
  • a display device including a display screen, a motherboard, and a data driving circuit.
  • the main board is configured to store the first brightness compensation data for the display screen.
  • the data driving circuit is configured to obtain the first brightness compensation data from the main board and adjust the image data based on the first brightness compensation data.
  • the motherboard is further configured to generate second brightness compensation data when the use time of the display screen reaches the use time threshold, and store the second brightness compensation data to replace the first brightness compensation data.
  • the data driving circuit is configured to obtain the second brightness compensation data from the main board and adjust the image data according to the second brightness compensation data.
  • the main board is further configured to generate third brightness compensation data and store the third brightness compensation data when the usage time of the display screen reaches the usage time threshold.
  • the data driving circuit is configured to obtain the first brightness compensation data and the third brightness compensation data from the main board, and adjust the image data according to the first brightness compensation data and the third brightness compensation data.
  • the main board is configured to generate second brightness compensation data in response to user input information, and store the second brightness compensation data to replace the first brightness compensation data.
  • the data driving circuit is configured to obtain the second brightness compensation data from the main board and adjust the image data according to the second brightness compensation data.
  • the main board is configured to generate third brightness compensation data in response to user input information.
  • the data driving circuit is configured to obtain the first brightness compensation data and the third brightness compensation data from the main board, and adjust the image data according to the first brightness compensation data and the third brightness compensation data.
  • the main board is configured to generate third brightness compensation data based on the threshold voltage drift characteristic of the driving transistor of the display screen and the light emission attenuation characteristic of the light emitting device, and based on the first brightness compensation data and the third brightness compensation Data to generate second brightness compensation data.
  • the main board is configured to generate third brightness compensation data based on the threshold voltage drift characteristic of the driving transistor of the display screen and the light emission attenuation characteristic of the light emitting device.
  • the display screen is divided into a plurality of compensation areas.
  • the data driving circuit is further configured to generate first brightness compensation data by: acquiring the current brightness value of each of the plurality of compensation areas; and generating first brightness compensation data based on the current brightness value and the desired brightness value of the compensation area.
  • the data driving circuit is configured to obtain the current brightness value of each of the plurality of compensation areas by: obtaining each pixel unit of the display screen The current brightness value of; and for each compensation area, determine the current brightness value of the compensation area to the current brightness value of the corresponding pixel unit.
  • the data driving circuit is configured to acquire the current brightness value of each of the plurality of compensation areas by: acquiring each pixel of the display screen The current brightness value of the unit; and for each compensation area, determine the current brightness value of the compensation area as the average value, weighted average value or maximum value of the current brightness values of the corresponding multiple pixel units.
  • FIG. 1 shows a schematic flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure
  • FIG. 2 shows a schematic flowchart of a process for generating first brightness compensation data according to an embodiment of the present disclosure
  • FIG. 3 shows a schematic flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure
  • FIG. 4 shows a schematic flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure
  • FIG. 5 shows a schematic flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure
  • FIG. 6 shows a schematic flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure.
  • FIG. 7 shows a schematic diagram of a display device according to an embodiment of the present disclosure.
  • the brightness compensation data is calculated by the display driving integrated circuit of the AMOLED display panel and stored in an additional storage device of the display driving integrated circuit.
  • the display driver integrated circuit obtains brightness compensation data from the additional storage device through a serial peripheral interface (SPI), and performs brightness compensation based on the brightness compensation data.
  • SPI serial peripheral interface
  • the storage space of the additional storage device of the display driving integrated circuit is limited, and the speed of the SPI interface is between tens of Mbps and 200 Mbps (typically, 50 Mbps), therefore, this limits the speed and accuracy of brightness compensation.
  • the manufacturing cost of the display panel is high.
  • the embodiments of the present disclosure provide a method for uneven brightness compensation of a display device.
  • the brightness compensation data is stored in the main board instead of the additional storage device of the display driving integrated circuit. This can significantly increase the storage space for storing the brightness compensation data, and save the manufacturing cost of the display device.
  • FIG. 1 shows a schematic flowchart of a method for brightness unevenness compensation of a display device according to an embodiment of the present disclosure.
  • the display device may include a display screen, a motherboard, and a data driving circuit.
  • the display screen and the data driving circuit may be integrated in the display panel.
  • the main board is configured to store the first brightness compensation data for the display screen.
  • the data driving circuit is configured to drive the display screen to display images.
  • the data driving circuit obtains the first brightness compensation data from the motherboard.
  • the main board may send the first brightness compensation data to the data driving circuit so that the data driving circuit subsequently performs brightness compensation.
  • the main board and the data driving circuit may be transmitted through an interface based on a communication protocol.
  • the communication protocol may be the Mobile Industry Processor Interface (MIPI) protocol. Since the transmission speed of the interface based on the MIPI protocol is about 1.5Gbps, the transmission rate can be significantly increased, thereby enabling higher-precision compensation.
  • the communication protocol may be a low voltage differential signal transmission (LVDS) protocol or an embedded display interface (EDP) protocol.
  • LVDS low voltage differential signal transmission
  • EDP embedded display interface
  • the first brightness compensation data may be a grayscale lookup table, which records the correspondence between the original grayscale and the compensated grayscale.
  • the original grayscale may include multiple sample grayscales.
  • the sample gray scale may be a predetermined gray scale value.
  • the original grayscale may include all grayscale values of grayscale levels supported by the display device, for example, all grayscales in 8-level grayscales 0-255.
  • the first brightness compensation data may be generated in advance and stored in the main board. The generation of the first brightness compensation data will be described below with reference to FIG. 2.
  • FIG. 2 schematically shows the process of generating the first brightness compensation data.
  • the first brightness compensation data is generated by the data driving circuit and stored in the main board.
  • the display screen may be divided into a plurality of compensation areas, and each compensation area may include at least one pixel unit.
  • the data driving circuit may obtain the current brightness value of each compensation area.
  • the sample image is displayed on the display screen.
  • the displayed sample image and its number can be determined according to the first brightness compensation algorithm used by the data driving circuit.
  • the first brightness compensation algorithm can be used to calculate the compensated gray level in the compensation area for each compensation area.
  • the sample image may be, for example, a primary color image or grayscale image with sample grayscale.
  • the sample image displayed on the display screen is captured by an image capturing device (for example, a high-definition camera).
  • the captured sample image displayed is supplied to the data driving circuit.
  • the data driving circuit may use an image processing formula to calculate the current brightness value of each pixel unit of the displayed sample image.
  • the current brightness value of the compensation area is determined.
  • the current brightness value of the compensation area is determined as the current brightness value of the corresponding pixel unit.
  • the current brightness value of the compensation area may be determined as a function based on the current brightness values of the corresponding multiple pixel units, such as an average value, weighted average value, or maximum value.
  • the data driving circuit may generate the first brightness compensation data using the first brightness compensation algorithm based on the current brightness value and the desired brightness value of each compensation area.
  • the first brightness compensation algorithm may be expressed as a first brightness compensation formula.
  • the first brightness compensation formula may represent a functional relationship between the compensated gray level and the original gray level.
  • the desired luminance value of each compensation area may be determined according to the sample gray scale of each compensation area of the sample image and the desired gray scale-luminance relationship curve for the display screen. If the compensation area includes one pixel unit, the gray scale of the compensation area is determined as the gray scale of the corresponding pixel unit. If the compensation area includes a plurality of pixel units, the grayscale of the compensation area may be determined as a function of the grayscale of the corresponding plurality of pixel units, such as average grayscale, weighted average grayscale, or maximum grayscale. Then, the data driving circuit may determine the expected brightness value of each compensation area from the desired gray-luminance relationship curve according to the sample gray scale of each compensation area.
  • the coefficients a and b of the first brightness compensation formula used in each compensation area are calculated, thereby obtaining the determined first brightness compensation formula.
  • the data driving circuit uses the determined first brightness compensation formula to calculate the compensated gradation corresponding to the sample gradation in the corresponding compensation area.
  • the data driving circuit may establish the correspondence between the sample gray scale of each compensation area and the compensated gray scale as the first brightness compensation data.
  • the data driving circuit may calculate the compensated grayscales corresponding to all grayscales in each compensation area through the process shown in FIG. 2 to establish each compensation The corresponding relationship between all gray levels of the area and the compensated gray levels is used as the first brightness compensation data.
  • the data driving circuit adjusts the image data according to the received first brightness compensation data.
  • the data driving circuit may acquire the gradation of the plurality of compensation regions. If the compensation area includes one pixel unit, the gray scale of the compensation area is determined as the gray scale of the corresponding pixel unit. If the compensation area includes multiple pixel units, the gray scale of the compensation area may be determined as a function of the gray scale of the corresponding multiple pixel units, such as average gray scale, weighted average gray scale, or maximum gray scale. Then, the data driving circuit uses the first brightness compensation data to adjust the gradation of each compensation area to obtain the compensated gradation of each compensation area.
  • the data driving circuit may directly use the first brightness compensation data to adjust the gradation of each compensation area. If the first brightness compensation data is for the sample gray level, the data driving circuit may use the first brightness compensation data to calculate the coefficients a and b of the first brightness compensation formula for each compensation area, thereby obtaining the determined first brightness Compensation formula. Then, the data driving circuit uses the determined first brightness compensation formula to calculate the compensated gradation of the corresponding compensation region based on the gradation of each compensation region. Furthermore, based on the compensated gradation of each compensation region, the data driving circuit can obtain the compensated image data. Then, the data driving circuit can drive the display screen to display the image according to the compensated image data.
  • the method of the above embodiment by storing the first brightness compensation data in the main board and providing the first brightness compensation data to the data driving circuit through the MIPI-based interface, fast brightness compensation can be achieved to improve the uneven brightness of the display device . Moreover, with the method of the above embodiment, it is possible to expand the data storage space and remove the additional storage device of the data driving circuit, thereby reducing the cost of the display device.
  • FIG. 3 schematically shows a flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure. The method of this embodiment will be described in detail below with reference to the drawings.
  • the threshold voltage has a positive drift, which causes the drive voltage to decrease.
  • the driving current flowing through the light emitting device decreases, resulting in a decrease in the light emitting luminance of the light emitting device. Therefore, the brightness of the display will decay with time. Therefore, in this embodiment, in addition to the brightness compensation for the uneven brightness of the display device, the brightness attenuation due to the long-term use of the display screen is further compensated.
  • the main board in addition to storing the first brightness compensation data, can also record and store the usage time of the display screen.
  • the motherboard can also store the threshold voltage drift characteristics of the driving transistor of the display screen and the light emission attenuation characteristics of the light emitting device.
  • the threshold voltage drift characteristics of the driving transistor can be expressed by using the relationship curve between time and driving voltage.
  • the luminescence attenuation characteristic of the light-emitting device can be expressed by the relationship curve between the use time and the brightness under a specific driving voltage.
  • step 310 when the display device is started, the main board provides the first brightness compensation data to the data driving circuit. Then, in step 320, the data driving circuit may adjust the image data according to the received first brightness compensation data when displaying the image.
  • step 330 the motherboard may detect whether the usage time of the display screen reaches the usage time threshold. If the usage time of the display screen does not reach the usage time threshold, it returns to step 320, and the data driving circuit continues to use the first brightness compensation data to adjust the image data.
  • step 340 the main board generates second brightness compensation data and stores the second brightness compensation data to replace the first brightness compensation data.
  • the main board uses the second brightness compensation algorithm stored in the main board to generate third brightness compensation data based on the threshold voltage drift characteristic of the driving transistor of the display screen and the light emission attenuation characteristic of the light emitting device, as Supplement to the first brightness compensation data.
  • the second brightness compensation algorithm is an algorithm different from the first brightness compensation algorithm.
  • the second brightness compensation algorithm may be expressed as a second brightness compensation formula, which represents a functional relationship between the compensated gray level and the original gray level.
  • the motherboard can determine the current driving voltage corresponding to the usage time of the display screen according to the threshold voltage drift characteristics of the driving transistor . Then, based on the current driving voltage and the usage time of the display screen, the main board can determine the current brightness of the display screen according to the light emission attenuation characteristics of the light emitting device. Further, the main board determines the expected brightness of the display according to the relationship between the gray level after initial compensation and the expected gray-luminance relationship of the display.
  • the main board calculates the coefficients c and d of the second brightness compensation formula based on the expected brightness and the current brightness of the display screen, thereby obtaining the determined second brightness compensation formula. .
  • the motherboard can use the determined second brightness compensation formula to calculate the gray after re-compensation corresponding to the gray after initial compensation, thereby establishing the correspondence between each gray after initial compensation and the gray after re-compensation as the first Three brightness compensation data.
  • the main board may establish the correspondence between the original gray level and the gray level after the compensation again, thereby generating second brightness compensation data and storing to replace the first brightness compensation data.
  • multiple usage time thresholds may also be set. In this case, whenever the usage time of the display screen reaches a usage time threshold, the main board will generate and store the second brightness compensation data through the operation of step 340 described above.
  • the main board provides the second brightness compensation data to the data driving circuit.
  • the main board may provide the second brightness compensation data to the data driving circuit when the display device is restarted after generating the second brightness compensation data.
  • the main board may provide the second brightness compensation data to the data driving circuit immediately after generating the second brightness compensation data.
  • the data driving circuit may adjust the image data according to the received second brightness compensation data. If the second brightness compensation data is for each gradation, the data driving circuit may directly use the second brightness compensation data to adjust the gradation of each compensation area.
  • the data driving circuit may use the second brightness compensation data to calculate the coefficients a and b of the first brightness compensation formula for each compensation area, thereby obtaining the determined first brightness Compensation formula. Then, the data driving circuit uses the determined first brightness compensation formula to calculate the compensated gradation of the corresponding compensation region based on the gradation of each compensation region. Furthermore, based on the compensated gradation of each compensation region, the data driving circuit can obtain the compensated image data. Then, the data driving circuit drives the display screen to display the image based on the compensated image data.
  • FIG. 4 schematically shows a flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure.
  • the difference from the embodiment shown in FIG. 3 is that when the usage time of the display screen reaches the usage time threshold, the main board generates and stores third brightness compensation data.
  • step 440 if the usage time of the display screen reaches the usage time threshold, the motherboard generates and stores third brightness compensation data.
  • the main board may use the second brightness compensation algorithm to generate third brightness compensation data according to the threshold voltage drift characteristic of the driving transistor and the light emission attenuation characteristic of the light emitting device.
  • the motherboard provides the third brightness compensation data to the data driving circuit.
  • the main board may provide the first brightness compensation data and the third brightness compensation data to the data driving circuit when the display device is restarted after generating the third brightness compensation data.
  • the main board may provide the third brightness compensation data to the data driving circuit immediately after generating the third brightness compensation data.
  • the data driving circuit may adjust the image data according to the first brightness compensation data and the third brightness compensation data to obtain the compensated image data.
  • the data driving circuit drives the display screen to display the image based on the compensated image data.
  • the data driving circuit when the data driving circuit adjusts the image data, first, the gradation of each compensation area is acquired according to the image data. Then, according to the first brightness compensation data and the third brightness compensation data, the gradation of each compensation area is adjusted to obtain compensated image data. If the first brightness compensation data and the third brightness compensation data are for the sample gray level, the data driving circuit uses the first brightness compensation data and the third brightness compensation data to calculate the coefficient of the first brightness compensation formula for each compensation area . Then, the data driving circuit uses the first brightness compensation formula and obtains the compensated grayscale of the corresponding compensation area based on the grayscale of each compensation area.
  • the data driving circuit first uses the first brightness compensation data to adjust the grayscale of each compensation area to obtain the grayscale after initial compensation, and then use The third brightness compensation data adjusts the initial gray level after compensation to obtain the gray level after compensation in each compensation area.
  • FIG. 5 schematically shows a flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure.
  • the update of the brightness compensation data occurs based on user input information.
  • step 510 the main board may provide the first brightness compensation data to the data driving circuit when the display device is started. Then, in step 520, the data driving circuit may adjust the image data according to the received first brightness compensation data when displaying the image.
  • steps 510 and 520 are similar to the operations of steps 310 and 320 in the previous embodiment.
  • the motherboard may detect whether user input information from the user is received.
  • the user input information may indicate to start the update of the brightness compensation data. If no user input information is received, return to step 520, and the data driving circuit continues to use the first brightness compensation data to adjust the image data.
  • the main board may generate second brightness compensation data and store the second brightness compensation data to replace the first brightness compensation data. The generation of the second brightness compensation data has been described in detail in the previous embodiments, and therefore, the description thereof is omitted here.
  • the user input information may also indicate the area to which the brightness compensation data is updated. In this case, the main board may generate second brightness compensation data for the compensation area corresponding to the indicated area. Then, instead of the first brightness compensation data, the second brightness compensation data is stored in the main board.
  • user input information can be obtained through an interactive interface provided on the display device.
  • the motherboard may provide the second brightness compensation data to the data driving circuit.
  • the main board may provide the second brightness compensation data to the data driving circuit immediately after generating the second brightness compensation data or when the display device is restarted.
  • the data driving circuit may adjust the image data according to the second brightness compensation data to obtain the compensated image data.
  • the data driving circuit drives the display screen to display the image based on the compensated image data.
  • FIG. 6 schematically shows a flowchart of a method for uneven brightness compensation of a display device according to an embodiment of the present disclosure.
  • the difference from the embodiment shown in FIG. 5 is that the main board generates and stores third brightness compensation data according to user input information.
  • steps 610, 620, and 630 are similar to steps 510, 520, and 530 shown in FIG.
  • the motherboard receives the user input information
  • the motherboard in step 640, the motherboard generates third brightness compensation data. If the user input information indicates to start the update of the brightness compensation data, the main board generates the third brightness compensation data of each compensation area. If the user input information also indicates an area to which the brightness compensation data is updated, the main board may generate third brightness compensation data only for the compensation area corresponding to the indicated area.
  • the main board may provide the generated third brightness compensation data to the data driving circuit.
  • the main board may provide the first brightness compensation data and the third brightness compensation data to the data driving circuit immediately after generating the third brightness compensation data or when the display device is restarted.
  • the data driving circuit may adjust the image data according to the first brightness compensation data and the third brightness compensation data when performing image display.
  • FIG. 7 is a schematic diagram of a display device 700 according to an embodiment of the present disclosure.
  • the display device 700 can implement the brightness unevenness compensation method described above with reference to FIGS. 1 and 3 to 6.
  • the display device 700 may include a display screen 701, a data driving circuit 702 coupled to the display screen 701, and a main board 703 coupled to the data driving circuit 702.
  • the main board 703 may store the first brightness compensation data.
  • the data driving circuit 702 may obtain the first brightness compensation data from the main board 703, and adjust the image data based on the first brightness compensation data during image display, and drive the display screen to display the image.
  • main board 703 may be further configured to update the first brightness compensation data when the usage time of the display screen reaches the usage time threshold or according to user input information. Then, the data driving circuit 702 can adjust the image data according to the second brightness compensation data when performing image display.
  • the display device may be, for example, a mobile phone, a tablet computer, a camera, a wearable device, or the like.

Abstract

一种用于显示装置(700)的亮度不均补偿的方法。显示装置(700)包括显示屏(701)、数据驱动电路(702)和主板(703)。亮度不均补偿方法包括:数据驱动电路(702)从主板(703)取得第一亮度补偿数据(S110),然后,数据驱动电路(702)根据该第一亮度补偿数据来调整图像数据(S120)。

Description

用于显示装置的亮度不均补偿的方法及相应的显示装置 技术领域
本公开涉及显示技术领域,具体地,涉及用于显示装置的亮度不均补偿的方法及相应的显示装置。
背景技术
目前,有源矩阵有机发光二极管(Active-matrix organic light-emitting diode,AMOLED)显示面板具有更宽的视角、更高的刷新率和更薄的尺寸。但是,AMOLED显示面板由于生产工艺或者长时间使用等问题而导致亮度不均(mura),从而产生残像,影响显示面板的显示效果。因此,需要对AMOLED显示面板的亮度不均进行补偿。在常规的用于显示面板的亮度不均补偿(demura)技术中,亮度补偿数据由显示面板的显示驱动集成电路(DDIC)计算生成并存储在DDIC的附加存储设备中。
发明内容
本公开的实施例提供了用于显示装置的亮度不均补偿的方法和相应的显示装置。
根据本公开的第一方面,提供了一种用于显示装置的亮度不均补偿的方法,显示装置包括显示屏、数据驱动电路和主板,其中,主板存储有用于显示屏的第一亮度补偿数据,该方法包括:数据驱动电路从主板取得该第一亮度补偿数据;以及数据驱动电路根据该第一亮度补偿数据,调整图像数据。
在本公开的实施例中,该方法还包括:在显示屏的使用时间达到使用时间阈值时,主板生成第二亮度补偿数据,并存储该第二亮度补偿数据以替换第一亮度补偿数据。然后,数据驱动电路从主板取得第二亮度补偿数据,并根据第二亮度补偿数据,调整图像数据。
在本公开的实施例中,该方法还包括:在显示屏的使用时间达到使用 时间阈值时,主板生成并存储第三亮度补偿数据。然后,数据驱动电路从主板取得第一亮度补偿数据和第三亮度补偿数据,并根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据。
在本公开的实施例中,该方法还包括:响应于用户输入信息,主板生成第二亮度补偿数据,并存储该第二亮度补偿数据以替换第一亮度补偿数据。然后,数据驱动电路从主板取得第二亮度补偿数据,并根据第二亮度补偿数据,调整图像数据。
在本公开的实施例中,该方法还包括:响应于用户输入信息,主板生成第三亮度补偿数据。然后,数据驱动电路从主板取得第一亮度补偿数据和第三亮度补偿数据,并根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据。
在本公开的实施例中,用户输入信息指示启动亮度补偿数据的更新。
在本公开的实施例中,用户输入信息还指示亮度补偿数据的更新所针对的区域。
在本公开的实施例中,主板生成第二亮度补偿数据包括:基于显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,生成第三亮度补偿数据;以及基于第一亮度补偿数据和第三亮度补偿数据,生成第二亮度补偿数据。
在本公开的实施例中,主板基于显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性来生成第三亮度补偿数据。
在本公开的实施例中,显示屏被划分成多个补偿区域。第一亮度补偿数据由数据驱动电路通过以下操作生成,并被存储在所述主板中:获取多个补偿区域中的每一个的当前亮度值;以及基于多个补偿区域的当前亮度值和期望亮度值,生成第一亮度补偿数据。
在本公开的实施例中,若一个补偿区域对应一个像素单元,则获取多个补偿区域的每一个的当前亮度值包括:获取显示屏的每个像素单元的当前亮度值;以及针对各补偿区域,确定该补偿区域的当前亮度值为对应的像素单元的当前亮度值。
在本公开的实施例中,若一个补偿区域对应多个像素单元,则获取多个补偿区域的每一个的当前亮度值包括:获取显示屏的每个像素单元的当前亮度值;针对各补偿区域,确定该补偿区域的当前亮度值为对应的多个像素单元的当前亮度值的平均值、加权平均值或最大值。
在本公开的实施例中,主板与数据驱动电路之间的接口使用移动产业处理器接口(MIPI)协议、低电压差分信号(LVDS)协议和嵌入式显示接口(EDP)中的任意一个。
根据本公开的第二方面,提供了一种显示装置,包括显示屏、主板和数据驱动电路。主板被配置为存储用于显示屏的第一亮度补偿数据。数据驱动电路被配置为从主板取得第一亮度补偿数据,以及基于第一亮度补偿数据,调整图像数据。
在本公开的实施例中,主板还被配置为在显示屏的使用时间达到使用时间阈值时,生成第二亮度补偿数据,并存储该第二亮度补偿数据以替换第一亮度补偿数据。数据驱动电路被配置为从主板取得第二亮度补偿数据,以及根据第二亮度补偿数据,调整图像数据。
在本公开的实施例中,主板还被配置为在显示屏的使用时间达到使用时间阈值时,生成第三亮度补偿数据,并存储该第三亮度补偿数据。数据驱动电路被配置为从主板取得第一亮度补偿数据和第三亮度补偿数据,以及根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据。
在本公开的实施例中,主板被配置为响应于用户输入信息,生成第二亮度补偿数据,并存储该第二亮度补偿数据以替换第一亮度补偿数据。数据驱动电路被配置为从主板取得第二亮度补偿数据,以及根据第二亮度补偿数据,调整图像数据。
在本公开的实施例中,主板被配置为响应于用户输入信息,生成第三亮度补偿数据。数据驱动电路被配置为从主板取得第一亮度补偿数据和第三亮度补偿数据,以及根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据。
在本公开的实施例中,主板被配置为基于显示屏的驱动晶体管的阈值 电压漂移特性和发光器件的发光衰减特性,生成第三亮度补偿数据,并且基于第一亮度补偿数据和第三亮度补偿数据来生成第二亮度补偿数据。
在本公开的实施例中,主板被配置为基于显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,生成第三亮度补偿数据。
在本公开的实施例中,显示屏被划分成多个补偿区域。数据驱动电路还被配置为通过以下操作生成第一亮度补偿数据:获取多个补偿区域的每一个的当前亮度值;以及基于补偿区域的当前亮度值和期望亮度值,生成第一亮度补偿数据。
在本公开的实施例中,若一个补偿区域对应一个像素单元,则数据驱动电路被配置为通过以下操作来获取多个补偿区域中的每一个的当前亮度值:获取显示屏的每个像素单元的当前亮度值;以及针对各补偿区域,确定该补偿区域的当前亮度值为对应的像素单元的当前亮度值。
在本公开的实施例中,若一个补偿区域对应多个像素单元,则数据驱动电路被配置为通过以下操作来获取多个补偿区域中的每一个的当前亮度值:获取显示屏的每个像素单元的当前亮度值;以及针对各补偿区域,确定该补偿区域的当前亮度值为对应的多个像素单元的当前亮度值的平均值、加权平均值或最大值。
附图说明
为了更清楚地说明本公开的实施例的技术方案,下面将对实施例的附图进行简要说明,应当知道,以下描述的附图仅仅涉及本公开的一些实施例,而非对本公开的限制,其中,贯穿这些附图的各个视图,相同的参考编号指示相同的部件或特征:
图1示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的示意性流程图;
图2示出了根据本公开的实施例的用于生成第一亮度补偿数据的过程的示意性流程图;
图3示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方 法的示意性流程图;
图4示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的示意性流程图;
图5示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的示意性流程图;
图6示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的示意性流程图;以及
图7示出了根据本公开的实施例的显示装置的示意图。
具体实施方式
为了使本公开的实施例的目的、技术方案和优点更加清楚,下面将结合附图,对本公开的实施例的技术方案进行清楚、完整的描述。显然,所描述的实施例是本公开的一部分实施例,而不是全部的实施例。基于所描述的本公开的实施例,本领域技术人员在无需创造性劳动的前提下所获得的所有其他实施例,也都属于本公开保护的范围。
当介绍本公开的元素及其实施例时,冠词“一”、“一个”、“该”和“所述”旨在表示存在一个或者多个要素。用语“包含”、“包括”、“含有”和“具有”旨在包括性的并且表示可以存在除所列要素之外的另外的要素。本公开中描绘的流程图仅仅是一个例子。在不脱离本公开精神的情况下,可以存在该流程图或其中描述的步骤的很多变型。例如,所述步骤可以以不同的顺序进行,或者可以添加、删除或者修改步骤。这些变型都被认为是所要求保护的方面的一部分。
除非另外定义,否则在此使用的所有术语(包括技术和科学术语)具有与本公开主题所属领域的技术人员所通常理解的相同含义。进一步将理解的是,诸如在通常使用的词典中定义的那些的术语应解释为具有与说明书上下文和相关技术中它们的含义一致的含义,并且将不以理想化或过于正式的形式来解释,除非在此另外明确定义。如在此所使用的,将两个或更多部分“连接”或“耦接”到一起的陈述应指这些部分直接结合到一起或通 过一个或多个中间部件结合。
如前所述,在AMOLED显示面板的制造过程中,由于生产工艺可能导致AMOLED显示面板存在亮度不均的现象,需要针对亮度不均的现象进行亮度补偿。通常,在获取了AMOLED显示面板的亮度不均数据后,由AMOLED显示面板的显示驱动集成电路计算亮度补偿数据,并存储在显示驱动集成电路的附加存储设备中。当AMOLED显示面板启动时,由显示驱动集成电路通过串行外设接口(SPI)从附加存储设备中获取亮度补偿数据,并基于亮度补偿数据来进行亮度补偿。然而,显示驱动集成电路的附加存储设备的存储空间有限,并且SPI接口的速度在几十Mbps到200Mbps之间(典型地,50Mbps),因此,这限制了亮度补偿的速度和精度。另外,由于需要在显示驱动集成电路上附加存储设备,因此,显示面板的制造成本较高。
为了解决上述技术问题,本公开的实施例提供了用于显示装置的亮度不均补偿的方法。在该方法中,亮度补偿数据被存储在主板中,而不是被存储在显示驱动集成电路的附加存储设备中。这样能够显著增加用于存储亮度补偿数据的存储空间,并且节约显示装置的制造成本。
下面参照图1至图6,对根据本公开的实施例的用于显示装置的亮度不均补偿的方法进行详细描述。
图1示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的示意性流程图。在本实施例中,显示装置可包括显示屏、主板和数据驱动电路。在一个实施例中,显示屏和数据驱动电路可被集成在显示面板中。主板被配置为存储用于显示屏的第一亮度补偿数据。数据驱动电路被配置为驱动显示屏以显示图像。
如图1所示,在步骤110,数据驱动电路从主板取得第一亮度补偿数据。在本公开的实施例中,当显示装置启动时,主板可将第一亮度补偿数据发送到数据驱动电路,以便数据驱动电路随后执行亮度补偿。在本公开的实施例中,主板与数据驱动电路之间可通过基于通信协议的接口来传输。在一个实施例中,通信协议可以是移动产业处理器接口(MIPI)协议。由 于基于MIPI协议的接口的传输速度约为1.5Gbps,因此,可显著提高传输速率,从而能够实现更高精度的补偿。可替换地,在其它实施例中,通信协议可以是低压差分信号传输(LVDS)协议或嵌入式显示接口(EDP)协议。
在本公开的实施例中,第一亮度补偿数据可以是灰度查找表,该灰度查找表记载原始灰度与补偿后灰度的对应关系。在本公开的一些实施例中,原始灰度可包括多个样本灰度。样本灰度可以是预先确定的灰度值。在本公开的另一些实施例中,原始灰度可以包括显示装置所支持的灰度级别的所有灰度值,例如,8级灰度0~255中的所有灰度。在本公开的实施例中,第一亮度补偿数据可预先生成并存储在主板中。关于第一亮度补偿数据的生成将在下面参照图2进行描述。
图2示意性地示出了生成第一亮度补偿数据的过程。在本公开的实施例中,第一亮度补偿数据由数据驱动电路生成,并存储在主板中。在本公开的实施例中,显示屏可被划分成多个补偿区域,每个补偿区域可包括至少一个像素单元。
如图2所示,在步骤210,数据驱动电路可获取每个补偿区域的当前亮度值。在一个实施例中,首先,在显示屏上显示样本图像。所显示的样本图像及其数量可根据数据驱动电路所使用的第一亮度补偿算法来确定。第一亮度补偿算法可用于针对每个补偿区域,计算该补偿区域中的补偿后灰度。样本图像可以例如是具有样本灰度的基色图像或灰度图像。然后,通过图像捕获设备(例如,高清照相机)拍摄在显示屏上显示的样本图像。所拍摄的显示的样本图像被提供给数据驱动电路。对于每个显示的样本图像,数据驱动电路可使用图像处理公式以计算该显示的样本图像的各像素单元的当前亮度值。然后,针对各补偿区域,确定该补偿区域的当前亮度值。在一个实施例中,如果补偿区域包括一个像素单元,则补偿区域的当前亮度值被确定为对应的像素单元的当前亮度值。在另一个实施例中,如果补偿区域包括多个像素单元,则补偿区域的当前亮度值可被确定为基于对应的多个像素单元的当前亮度值的函数,例如平均值、加权平均值或最 大值。
在获得了各补偿区域的当前亮度值后,在步骤220,数据驱动电路可基于各补偿区域的当前亮度值和期望亮度值,使用第一亮度补偿算法生成第一亮度补偿数据。在本公开的实施例中,第一亮度补偿算法可被表示为第一亮度补偿公式。第一亮度补偿公式可表示补偿后灰度与原始灰度之间的函数关系。例如,第一亮度补偿公式可以表示为Y=aX+b,其中,X表示原始灰度,Y表示补偿后灰度,a、b表示系数。应当注意,在此仅示例性地示出第一亮度补偿公式以便对本公开进行理解,并非旨在限定。在本公开的实施例中,各补偿区域的期望亮度值可以根据样本图像的各补偿区域的样本灰度和用于显示屏的期望灰度-亮度关系曲线确定。如果补偿区域包括一个像素单元,则补偿区域的灰度被确定为对应的像素单元的灰度。如果补偿区域包括多个像素单元,则补偿区域的灰度可被确定为对应的多个像素单元的灰度的函数,例如平均灰度、加权平均灰度或最大灰度。然后,数据驱动电路可根据各补偿区域的样本灰度,从期望灰度-亮度关系曲线中,确定各补偿区域的期望亮度值。基于各补偿区域的当前亮度值和期望亮度值,计算在各补偿区域中使用的第一亮度补偿公式的系数a和b,从而获得确定的第一亮度补偿公式。然后,数据驱动电路使用所确定的第一亮度补偿公式,计算相应的补偿区域的与样本灰度对应的补偿后灰度。然后,数据驱动电路可建立各补偿区域的样本灰度与补偿后灰度的对应关系,作为第一亮度补偿数据。
在其它实施例中,如果原始灰度包括所有灰度值,则数据驱动电路可通过如图2所示的过程,计算各补偿区域的与所有灰度对应的补偿后灰度,从而建立各补偿区域的所有灰度与补偿后灰度的对应关系,作为第一亮度补偿数据。
返回图1,在步骤120,当需要显示图像时,数据驱动电路根据所接收的第一亮度补偿数据,调整图像数据。在本公开的实施例中,根据图像数据,数据驱动电路可获取多个补偿区域的灰度。如果补偿区域包括一个像素单元,则补偿区域的灰度被确定为对应的像素单元的灰度。如果补偿区 域包括多个像素单元,则补偿区域的灰度可被确定为对应的多个像素单元的灰度的函数,例如平均灰度、加权平均灰度或最大灰度。然后,数据驱动电路使用第一亮度补偿数据,调整各补偿区域的灰度,以获得各补偿区域的补偿后灰度。如果第一亮度补偿数据是针对每个灰度的,则数据驱动电路可直接使用第一亮度补偿数据来调整各补偿区域的灰度。如果第一亮度补偿数据是针对样本灰度的,则数据驱动电路可使用第一亮度补偿数据以计算用于各补偿区域的第一亮度补偿公式的系数a和b,从而获得确定的第一亮度补偿公式。然后,数据驱动电路使用所确定的第一亮度补偿公式,基于各补偿区域的灰度,计算相应的补偿区域的补偿后灰度。进而,基于各补偿区域的补偿后灰度,数据驱动电路可获得补偿后的图像数据。然后,数据驱动电路可根据补偿后的图像数据,驱动显示屏来显示图像。
采用上述实施例的方法,通过在主板中存储第一亮度补偿数据,并通过基于MIPI的接口向数据驱动电路提供第一亮度补偿数据,能够实现快速的亮度补偿,以改善显示装置的亮度不均。而且,采用上述实施例的方法,能够扩大数据存储空间,除去数据驱动电路的附加存储设备,从而降低显示装置的成本。
图3示意性地示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的流程图。以下结合附图,对本实施例的方法进行详细的描述。
随着显示屏的长时间使用,由于驱动晶体管长期处于高频充放电状态,因此,阈值电压产生正向漂移,从而导致驱动电压降低。另外,在发光器件工作期间,随着工作温度的改变,流经发光器件的驱动电流降低,从而导致发光器件的发光亮度降低。因此,显示屏的亮度将随着时间而衰减。为此,在本实施例中,除了针对显示装置的亮度不均来进行亮度补偿之外,进一步对由于显示屏的长时间使用而造成的亮度衰减进行补偿。
在本实施例中,主板除了存储有第一亮度补偿数据之外,还可记录并存储显示屏的使用时间。此外,主板还可存储显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性。驱动晶体管的阈值电压漂移特性可通过使用时间与驱动电压的关系曲线来表示。发光器件的发光衰减特 性可通过在特定驱动电压下的使用时间与亮度的关系曲线来表示。
如图3所示,在步骤310,在显示装置启动时,主板向数据驱动电路提供第一亮度补偿数据。然后,在步骤320,数据驱动电路可在显示图像时,根据所接收的第一亮度补偿数据,调整图像数据。在步骤330,主板可检测显示屏的使用时间是否达到使用时间阈值。如果显示屏的使用时间未达到使用时间阈值,则返回到步骤320,数据驱动电路继续使用第一亮度补偿数据来调整图像数据。
如果显示屏的使用时间达到使用时间阈值,则在步骤340,主板生成第二亮度补偿数据,并存储该第二亮度补偿数据以替换第一亮度补偿数据。
在本公开的实施例中,首先,主板基于显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,使用存储在主板中的第二亮度补偿算法来生成第三亮度补偿数据,作为对第一亮度补偿数据的补充。在本公开的实施例中,第二亮度补偿算法是与第一亮度补偿算法不同的算法。在一个实施例中,第二亮度补偿算法可被表示为第二亮度补偿公式,其表示补偿后灰度与原始灰度之间的函数关系。例如,第二亮度补偿公式可以表示为Y’=cX’+d,其中,X’表示原始灰度,Y’表示补偿后灰度,c、d表示系数。应当注意,在此仅示例性地示出第二亮度补偿公式以便对本公开进行理解,并非旨在限定。
对于第一亮度补偿数据中的每个补偿后灰度(以下称为“初始补偿后灰度”),主板可根据驱动晶体管的阈值电压漂移特性,确定与显示屏的使用时间对应的当前驱动电压。然后,基于当前驱动电压和显示屏的使用时间,主板可根据发光器件的发光衰减特性来确定显示屏的当前亮度。进一步地,主板根据初始补偿后灰度和显示屏的期望灰度-亮度关系曲线来确定显示屏的期望亮度。然后,主板基于显示屏的期望亮度和当前亮度,计算第二亮度补偿公式的系数c和d,从而获得确定的第二亮度补偿公式,。。然后,主板可使用所确定的第二亮度补偿公式,计算与初始补偿后灰度对应的再次补偿后灰度,从而建立每个初始补偿后灰度与再次补偿后灰度的对应关系,作为第三亮度补偿数据。进一步地,主板可根据第一亮度补偿 数据和第三亮度补偿数据,建立原始灰度与再次补偿后灰度的对应关系,从而生成第二亮度补偿数据,并存储以替换第一亮度补偿数据。
在本公开的实施例中,还可以设置多个使用时间阈值。在这种情况下,每当显示屏的使用时间达到一个使用时间阈值时,主板都将通过上述步骤340的操作生成并存储第二亮度补偿数据。
在步骤350,主板向数据驱动电路提供第二亮度补偿数据。在本公开的实施例中,主板可在生成第二亮度补偿数据之后在显示装置重新启动时向数据驱动电路提供第二亮度补偿数据。可替换地,主板可在生成第二亮度补偿数据之后立即向数据驱动电路提供第二亮度补偿数据。然后,在步骤360,数据驱动电路可根据所接收的第二亮度补偿数据,调整图像数据。如果第二亮度补偿数据是针对每个灰度的,则数据驱动电路可直接使用第二亮度补偿数据来调整各补偿区域的灰度。如果第二亮度补偿数据是针对样本灰度的,则数据驱动电路可使用第二亮度补偿数据以计算用于各补偿区域的第一亮度补偿公式的系数a和b,从而获得确定的第一亮度补偿公式。然后,数据驱动电路使用所确定的第一亮度补偿公式,基于各补偿区域的灰度,计算相应的补偿区域的补偿后灰度。进而,基于各补偿区域的补偿后灰度,数据驱动电路可获得补偿后的图像数据。然后,数据驱动电路根据补偿后的图像数据,驱动显示屏以显示图像。
图4示意性地示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的流程图。在本实施例中,与图3所示的实施例的不同在于:当显示屏的使用时间达到使用时间阈值时,主板生成并存储第三亮度补偿数据。
在图4中,步骤410、420和430的操作与步骤310、320和330相似,在此省略其详细说明。然后,在步骤440,如果显示屏的使用时间达到使用时间阈值,则主板生成并存储第三亮度补偿数据。在本公开的实施例中,如前所述,主板可根据驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,使用第二亮度补偿算法来生成第三亮度补偿数据。
在步骤450,主板向数据驱动电路提供第三亮度补偿数据。在本公开 的实施例中,主板可在生成第三亮度补偿数据之后在重新启动显示装置时,将第一亮度补偿数据和第三亮度补偿数据一起提供给数据驱动电路。可替换地,主板可在生成第三亮度补偿数据之后立即将第三亮度补偿数据提供给数据驱动电路。然后,在步骤460,数据驱动电路可根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据以获得补偿后的图像数据。然后,数据驱动电路根据补偿后的图像数据,驱动显示屏显示图像。
在本公开的实施例中,在数据驱动电路对图像数据进行调整时,首先,根据图像数据,获取各补偿区域的灰度。然后,根据第一亮度补偿数据和第三亮度补偿数据,调整各补偿区域的灰度,以获得补偿后的图像数据。如果第一亮度补偿数据和第三亮度补偿数据是针对样本灰度的,则数据驱动电路使用第一亮度补偿数据和第三亮度补偿数据以计算用于各补偿区域的第一亮度补偿公式的系数。然后,数据驱动电路使用第一亮度补偿公式,并基于各补偿区域的灰度,获得相应的补偿区域的补偿后灰度。如果第一亮度补偿数据和第三亮度补偿数据是针对每个灰度的,则数据驱动电路首先使用第一亮度补偿数据来调整各补偿区域的灰度以获得初始补偿后灰度,然后再使用第三亮度补偿数据来调整初始补偿后灰度,以获得各补偿区域的补偿后灰度。
图5示意性地示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的流程图。在本实施例中,亮度补偿数据的更新是基于用户输入信息而发生的。
如图5所示,在步骤510,主板可在显示装置启动时向数据驱动电路提供第一亮度补偿数据。然后,在步骤520,数据驱动电路可在显示图像时根据所接收的第一亮度补偿数据,调整图像数据。步骤510和520的操作与前面实施例中步骤310和320的操作相似。
进一步地,在步骤530,主板可检测是否接收到来自用户的用户输入信息。在本公开的实施例中,用户输入信息可指示启动亮度补偿数据的更新。如果未接收到用户输入信息,则返回到步骤520,数据驱动电路继续使用第一亮度补偿数据来调整图像数据。如果接收到用户输入信息,则在 步骤540,主板可生成第二亮度补偿数据,并存储该第二亮度补偿数据,以替换第一亮度补偿数据。关于第二亮度补偿数据的生成已在前面的实施例中详细描述,因此,在此省略其说明。此外,在本公开的实施例中,用户输入信息还可指示亮度补偿数据的更新所针对的区域。在这种情况下,主板可以生成用于与所指示的区域对应的补偿区域的第二亮度补偿数据。然后,代替第一亮度补偿数据,第二亮度补偿数据被存储在主板中。
在本公开的实施例中,用户输入信息可通过在显示装置上设置的交互接口来获取。
然后,在步骤550,主板可向数据驱动电路提供第二亮度补偿数据。如前所述,主板可在生成第二亮度补偿数据之后立即或者在显示装置重新启动时,将第二亮度补偿数据提供给数据驱动电路。然后,在步骤560,在显示图像时,数据驱动电路可根据第二亮度补偿数据,调整图像数据以获得补偿后的图像数据。然后,数据驱动电路根据补偿后的图像数据,驱动显示屏显示图像。
图6示意性地示出了根据本公开的实施例的用于显示装置的亮度不均补偿的方法的流程图。在本实施例中,与图5所示的实施例的不同在于:主板根据用户输入信息,生成并存储第三亮度补偿数据。
在图6中,步骤610、620和630的操作与图5所示的步骤510、520和530相似。如果主板接收到用户输入信息,则在步骤640,主板生成第三亮度补偿数据。如果用户输入信息指示启动亮度补偿数据的更新,则主板生成各补偿区域的第三亮度补偿数据。如果用户输入信息还指示亮度补偿数据的更新所针对的区域,则主板可仅与对所指示的区域对应的补偿区域生成第三亮度补偿数据。
然后,在步骤650,主板可向数据驱动电路提供所生成的第三亮度补偿数据。如前所述,主板可在生成第三亮度补偿数据之后立即或者在显示装置重新启动时,将第一亮度补偿数据和第三亮度补偿数据一起提供给数据驱动电路。然后,在步骤660,数据驱动电路可在进行图像显示时根据第一亮度补偿数据和第三亮度补偿数据,调整图像数据。
采用参照图3至图6描述的实施例的方法,能够对显示屏的亮度不均和由于长时间使用而造成的亮度衰减都进行补偿,从而进一步提高显示装置的显示质量。
图7是根据本公开的实施例的显示装置700的示意图。在本实施例中,显示装置700能够实现前面参照图1和图3至图6描述的亮度不均补偿的方法。
如图7所示,显示装置700可包括显示屏701、与显示屏701耦接的数据驱动电路702、以及与数据驱动电路702耦接的主板703。主板703可存储有第一亮度补偿数据。数据驱动电路702可从主板703取得第一亮度补偿数据,并在进行图像显示时,基于第一亮度补偿数据,调整图像数据,并驱动显示屏以显示图像。
进一步地,主板703还可被配置为在显示屏的使用时间达到使用时间阈值时或者根据用户输入信息,对第一亮度补偿数据进行更新。然后,数据驱动电路702可在进行图像显示时,根据第二亮度补偿数据,调整图像数据。
在本公开的实施例中,显示装置可以例如是移动电话、平板计算机、照相机、可穿戴式设备等。
以上已经对本公开的若干实施例进行了详细描述,但这些实施例仅是示例性的,而并不旨在限制本公开的范围。事实上,本文所描述的实施例也可以以各种其它形式来实现。此外,在不脱离本公开的精神下,可以对本文所描述的实施例进行各种省略、替代和改变。所附权利要求以及它们的等同旨在覆盖落在本公开范围和精神内的此类形式或者修改。

Claims (26)

  1. 一种显示装置的亮度不均补偿的方法,所述显示装置包括显示屏、数据驱动电路和主板,其中,所述主板存储有用于所述显示屏的第一亮度补偿数据,所述方法包括:
    所述数据驱动电路从所述主板取得所述第一亮度补偿数据;以及
    所述数据驱动电路根据所述第一亮度补偿数据,调整图像数据。
  2. 根据权利要求1所述的方法,还包括:
    在所述显示屏的使用时间达到使用时间阈值时,所述主板生成第二亮度补偿数据,并存储所述第二亮度补偿数据以替换所述第一亮度补偿数据;
    其中,所述数据驱动电路从所述主板取得所述第二亮度补偿数据,并根据所述第二亮度补偿数据,调整所述图像数据。
  3. 根据权利要求1所述的方法,还包括:
    在所述显示屏的使用时间达到使用时间阈值时,所述主板生成并存储第三亮度补偿数据;
    其中,所述数据驱动电路从所述主板取得所述第一亮度补偿数据和所述第三亮度补偿数据,并根据所述第一亮度补偿数据和所述第三亮度补偿数据,调整所述图像数据。
  4. 根据权利要求1所述的方法,还包括:
    响应于用户输入信息,所述主板生成第二亮度补偿数据并存储所述第二亮度补偿数据,以替换第一亮度补偿数据;
    其中,所述数据驱动电路从所述主板取得所述第二亮度补偿数据,并根据所述第二亮度补偿数据,调整所述图像数据。
  5. 根据权利要求1所述的方法,还包括:
    响应于用户输入信息,所述主板生成第三亮度补偿数据,
    其中,所述数据驱动电路从所述主板取得所述第一亮度补偿数据和所述第三亮度补偿数据,并根据所述第一亮度补偿数据和所述第三亮度补偿数据,调整所述图像数据。
  6. 根据权利要求4或5所述的方法,其中,所述用户输入信息指示启 动亮度补偿数据的更新。
  7. 根据权利要求6所述的方法,其中,所述用户输入信息还指示亮度补偿数据的更新所针对的区域。
  8. 根据权利要求2或4所述的方法,其中,所述主板生成所述第二亮度补偿数据包括:
    基于所述显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,生成第三亮度补偿数据;以及
    基于所述第一亮度补偿数据和所述第三亮度补偿数据,生成所述第二亮度补偿数据。
  9. 根据权利要求3或5所述的方法,其中,所述主板基于所述显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性来生成所述第三亮度补偿数据。
  10. 根据权利要求1所述的方法,其中,所述显示屏被划分成多个补偿区域,其中,所述第一亮度补偿数据由所述数据驱动电路通过以下操作生成,并被存储在所述主板中:
    获取所述多个补偿区域中的每一个的当前亮度值;以及
    基于所述多个补偿区域的所述当前亮度值和期望亮度值,生成所述第一亮度补偿数据。
  11. 根据权利要求10所述的方法,其中,若一个补偿区域对应一个像素单元,则获取所述多个补偿区域中的每一个的当前亮度值包括:
    获取所述显示屏的每个像素单元的当前亮度值;以及
    针对各补偿区域,确定该补偿区域的当前亮度值为对应的像素单元的当前亮度值。
  12. 根据权利要求10所述的方法,其中,若一个补偿区域对应多个像素单元,则获取所述多个补偿区域的每一个的当前亮度值包括:
    获取所述显示屏的每个像素单元的当前亮度值;以及
    针对各补偿区域,确定该补偿区域的当前亮度值为对应的多个像素单元的当前亮度值的平均值、加权平均值或最大值。
  13. 根据权利要求1至12中任意一项所述的方法,其中,所述主板与所述数据驱动电路之间的接口使用移动产业处理器接口(MIPI)协议、低电压差分信号(LVDS)协议和嵌入式显示接口(EDP)中的任意一个。
  14. 一种显示装置,包括显示屏、主板和数据驱动电路,
    其中,所述主板被配置为存储用于所述显示屏的第一亮度补偿数据;
    其中,所述数据驱动电路被配置为从所述主板取得所述第一亮度补偿数据,以及基于所述第一亮度补偿数据,调整图像数据。
  15. 根据权利要求14所述的显示装置,其中,所述主板还被配置为在所述显示屏的使用时间达到使用时间阈值时,生成第二亮度补偿数据,并存储所述第二亮度补偿数据,以替换所述第一亮度补偿数据;
    其中,所述数据驱动电路被配置为从所述主板取得所述第二亮度补偿数据,以及根据所述第二亮度补偿数据,调整所述图像数据。
  16. 根据权利要求14所述的显示装置,其中,所述主板还被配置为在所述显示屏的使用时间达到使用时间阈值时,生成第三亮度补偿数据,并存储所述第三亮度补偿数据;
    其中,所述数据驱动电路被配置为从所述主板取得所述第一亮度补偿数据和所述第三亮度补偿数据,以及根据所述第一亮度补偿数据和所述第三亮度补偿数据,调整所述图像数据。
  17. 根据权利要求14所述的显示装置,其中,所述主板被配置为响应于用户输入信息,生成第二亮度补偿数据,并存储所述第二亮度补偿数据,以替换所述第一亮度补偿数据;
    其中,所述数据驱动电路被配置为从所述主板取得所述第二亮度补偿数据,以及根据所述第二亮度补偿数据,调整所述图像数据。
  18. 根据权利要求14所述的显示装置,其中,所述主板被配置为响应于用户输入信息,生成第三亮度补偿数据;
    其中,所述数据驱动电路被配置为从所述主板取得所述第一亮度补偿数据和所述第三亮度补偿数据,以及根据所述第一亮度补偿数据和所述第三亮度补偿数据,调整所述图像数据。
  19. 根据权利要求17或18所述的显示装置,其中,所述用户输入信息指示启动亮度补偿数据的更新。
  20. 根据权利要求19所述的显示装置,其中,所述用户输入信息还指示亮度补偿数据的更新所针对的区域。
  21. 根据权利要求15或17所述的显示装置,其中,所述主板被配置为基于所述显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,生成所述第三亮度补偿数据,并且基于所述第一亮度补偿数据和所述第三亮度补偿数据来生成所述第二亮度补偿数据。
  22. 根据权利要求16或18所述的显示装置,其中,所述主板被配置为基于所述显示屏的驱动晶体管的阈值电压漂移特性和发光器件的发光衰减特性,生成所述第三亮度补偿数据。
  23. 根据权利要求14所述的显示装置,其中,所述显示屏被划分成多个补偿区域,其中,所述数据驱动电路还被配置为通过以下操作生成所述第一亮度补偿数据,并存储在所述主板中:
    获取所述多个补偿区域的每一个的当前亮度值;以及
    基于所述多个显示区域的所述当前亮度值和期望亮度值,生成所述第一亮度补偿数据。
  24. 根据权利要求23所述的显示装置,其中,若一个补偿区域对应一个像素单元,则所述数据驱动电路被配置为通过以下操作来获取所述多个补偿区域中的每一个的当前亮度值:
    获取所述显示屏的每个像素单元的当前亮度值;以及
    针对各补偿区域,确定该补偿区域的当前亮度值为对应的像素单元的当前亮度值。
  25. 根据权利要求23所述的显示装置,其中,若一个补偿区域对应多个像素单元,则所述数据驱动电路被配置为通过以下操作来获取所述多个补偿区域中的每一个的当前亮度值:
    获取所述显示屏的每个像素单元的当前亮度值;以及
    针对各补偿区域,确定该补偿区域的当前亮度值为对应的多个像素单 元的当前亮度值的平均值、加权平均值或最大值。
  26. 根据权利要求14至25中任意一项所述的显示装置,其中,所述主板与所述数据驱动电路之间的接口使用移动产业处理器接口(MIPI)协议、低电压差分信号(LVDS)协议和嵌入式显示接口(EDP)中的任意一个。
PCT/CN2019/070443 2019-01-04 2019-01-04 用于显示装置的亮度不均补偿的方法及相应的显示装置 WO2020140277A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980000021.4A CN110301000B (zh) 2019-01-04 2019-01-04 用于显示装置的亮度不均补偿的方法及相应的显示装置
US16/642,653 US11127356B2 (en) 2019-01-04 2019-01-04 Method for compensating brightness unevenness of a display device and related display device
PCT/CN2019/070443 WO2020140277A1 (zh) 2019-01-04 2019-01-04 用于显示装置的亮度不均补偿的方法及相应的显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/070443 WO2020140277A1 (zh) 2019-01-04 2019-01-04 用于显示装置的亮度不均补偿的方法及相应的显示装置

Publications (1)

Publication Number Publication Date
WO2020140277A1 true WO2020140277A1 (zh) 2020-07-09

Family

ID=68033048

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/070443 WO2020140277A1 (zh) 2019-01-04 2019-01-04 用于显示装置的亮度不均补偿的方法及相应的显示装置

Country Status (3)

Country Link
US (1) US11127356B2 (zh)
CN (1) CN110301000B (zh)
WO (1) WO2020140277A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110910830B (zh) * 2019-11-29 2021-02-12 京东方科技集团股份有限公司 显示亮度调节方法、显示系统、计算机设备及介质
TWI799801B (zh) * 2020-03-16 2023-04-21 瑞鼎科技股份有限公司 支援顯示面板的不同更新頻率的亮度補償方法
CN113870774B (zh) * 2020-06-30 2022-12-02 北京小米移动软件有限公司 显示控制方法、显示控制装置及计算机可读存储介质
CN112102781B (zh) * 2020-10-30 2022-02-01 武汉精立电子技术有限公司 一种显示设备的Demura和SPR集成方法及系统
CN112995645B (zh) * 2021-02-04 2022-12-27 维沃移动通信有限公司 图像处理方法、装置和电子设备
CN114387920A (zh) * 2022-02-16 2022-04-22 武汉华星光电半导体显示技术有限公司 一种oled显示装置及其亮度驱动方法
US11798494B2 (en) 2022-02-16 2023-10-24 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. OLED display device and brightness driving method thereof
CN115183990B (zh) * 2022-09-09 2022-12-23 杭州光粒科技有限公司 一种显示屏幕检测方法及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101765874A (zh) * 2008-05-28 2010-06-30 松下电器产业株式会社 显示装置、显示装置的制造方法及控制方法
CN102768821A (zh) * 2012-08-07 2012-11-07 四川虹视显示技术有限公司 Amoled显示器及其驱动方法
CN104064141A (zh) * 2014-06-12 2014-09-24 京东方科技集团股份有限公司 显示面板光学补偿装置、显示面板和光学补偿方法
CN107450878A (zh) * 2017-07-28 2017-12-08 京东方科技集团股份有限公司 Amoled的图像处理方法、驱动芯片及可穿戴设备
US20180240404A1 (en) * 2017-02-23 2018-08-23 Synaptics Incorporated Device and method for image data processing
CN109036265A (zh) * 2017-06-08 2018-12-18 瑞鼎科技股份有限公司 应用于显示面板的光学补偿装置及其运作方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2518276A1 (en) * 2005-09-13 2007-03-13 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
US20090102757A1 (en) * 2007-10-18 2009-04-23 Yu-Wen Chiou Apparatus and method to compensate a driving current of a light emitting diode
KR101470688B1 (ko) * 2011-12-08 2014-12-08 엘지디스플레이 주식회사 유기발광 표시장치 및 그의 열화보상방법
CN102855842B (zh) * 2012-09-04 2015-06-17 京东方科技集团股份有限公司 一种图像显示控制方法及装置
CN103021332A (zh) * 2012-12-04 2013-04-03 彩虹(佛山)平板显示有限公司 一种用于显示器的驱动系统
US9591720B2 (en) * 2015-08-05 2017-03-07 Mitsubishi Electric Corporation LED display apparatus
CN105206217B (zh) * 2015-10-27 2018-02-06 京东方科技集团股份有限公司 显示处理方法、装置及显示器件
US10049614B2 (en) * 2015-10-28 2018-08-14 Dell Products L.P. OLED degradation compensation system
CN105895056B (zh) * 2016-06-17 2017-04-19 京东方科技集团股份有限公司 亮度补偿模型的建立方法、屏幕亮度的补偿方法及装置
RU2720980C1 (ru) * 2017-03-30 2020-05-15 Мицубиси Электрик Корпорейшн Устройство отображения на основе сид и способ коррекции его яркости
CN107799066B (zh) * 2017-11-15 2020-04-07 京东方科技集团股份有限公司 显示面板的补偿方法、驱动装置、显示设备及存储介质
CN109166520A (zh) * 2018-09-19 2019-01-08 云谷(固安)科技有限公司 具有凹槽的显示面板的驱动电路、显示屏及显示设备
KR20200134584A (ko) * 2019-05-22 2020-12-02 삼성전자주식회사 디스플레이 구동 회로 및 이를 포함하는 디스플레이 장치
TWI711024B (zh) * 2019-08-07 2020-11-21 宏碁股份有限公司 自發光顯示裝置及其顯示畫面補償方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101765874A (zh) * 2008-05-28 2010-06-30 松下电器产业株式会社 显示装置、显示装置的制造方法及控制方法
CN102768821A (zh) * 2012-08-07 2012-11-07 四川虹视显示技术有限公司 Amoled显示器及其驱动方法
CN104064141A (zh) * 2014-06-12 2014-09-24 京东方科技集团股份有限公司 显示面板光学补偿装置、显示面板和光学补偿方法
US20180240404A1 (en) * 2017-02-23 2018-08-23 Synaptics Incorporated Device and method for image data processing
CN109036265A (zh) * 2017-06-08 2018-12-18 瑞鼎科技股份有限公司 应用于显示面板的光学补偿装置及其运作方法
CN107450878A (zh) * 2017-07-28 2017-12-08 京东方科技集团股份有限公司 Amoled的图像处理方法、驱动芯片及可穿戴设备

Also Published As

Publication number Publication date
CN110301000A (zh) 2019-10-01
CN110301000B (zh) 2022-03-04
US20210134246A1 (en) 2021-05-06
US11127356B2 (en) 2021-09-21

Similar Documents

Publication Publication Date Title
WO2020140277A1 (zh) 用于显示装置的亮度不均补偿的方法及相应的显示装置
KR102583828B1 (ko) 액정 표시 장치 및 이의 구동 방법
KR20190052195A (ko) 휘도 불균일 보상 방법 및 이를 채용한 표시 장치
CN104715737A (zh) 显示装置及其亮度控制方法
KR20210007455A (ko) 디스플레이 구동 회로, 이를 포함하는 디스플레이 장치 및 디스플레이 구동 회로의 동작 방법
KR102083297B1 (ko) 표시장치와 그 휘도 제어 방법
CN112992069A (zh) 显示控制装置、显示装置、记录介质及控制方法
KR20140067778A (ko) 타이밍 컨트롤러 및 그 구동 방법과 이를 이용한 표시장치
JP2019040036A (ja) 電子機器、表示装置及び表示制御方法
TWI482135B (zh) 顯示裝置及其影像控制方法
CN111883052B (zh) 显示装置和显示装置的驱动方法
WO2019237837A1 (zh) 图像处理方法、装置、显示设备及计算机存储介质
WO2024036864A1 (zh) 驱动补偿电路、补偿方法以及显示装置
CN113593474B (zh) 伽马调试方法、显示驱动芯片以及显示装置
CN111009221A (zh) 显示装置
US11615730B2 (en) Display device performing peak luminance driving, and method of operating a display device
US20220059028A1 (en) Control apparatus, display apparatus including self-luminous element, and control method
US20210280111A1 (en) Method of generating correction data for display device, test device, and display device
KR102044133B1 (ko) 유기발광소자표시장치 및 그 구동방법
US10347167B2 (en) Image driving method and system using the same
KR101633120B1 (ko) 액정표시장치
KR101915800B1 (ko) 표시장치
WO2022133648A1 (zh) 用于处理显示装置的显示信号的方法及其设备、显示设备
CN111968557A (zh) 背光模组的补偿方法和补偿系统
CN113793562A (zh) 显示面板及其亮度补偿方法和显示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19906743

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19906743

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19906743

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 07.02.2022)

122 Ep: pct application non-entry in european phase

Ref document number: 19906743

Country of ref document: EP

Kind code of ref document: A1