WO2021147904A1 - 图像处理方法、图像处理模组及显示装置 - Google Patents

图像处理方法、图像处理模组及显示装置 Download PDF

Info

Publication number
WO2021147904A1
WO2021147904A1 PCT/CN2021/072881 CN2021072881W WO2021147904A1 WO 2021147904 A1 WO2021147904 A1 WO 2021147904A1 CN 2021072881 W CN2021072881 W CN 2021072881W WO 2021147904 A1 WO2021147904 A1 WO 2021147904A1
Authority
WO
WIPO (PCT)
Prior art keywords
brightness
pixel
value
current frame
rgbw
Prior art date
Application number
PCT/CN2021/072881
Other languages
English (en)
French (fr)
Inventor
孟松
吴仲远
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/428,178 priority Critical patent/US11527214B2/en
Publication of WO2021147904A1 publication Critical patent/WO2021147904A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control 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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters 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
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters 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 with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the embodiments of the present disclosure relate to the field of image processing technology, and in particular, to an image processing method, an image processing module, and a display device.
  • the current mature mass production technology of large-size OLED (organic light-emitting diode) display devices generally uses white light OLED devices and color film array integrated light emitting methods. It uses Open MASK (open mask) vapor deposition of white light OLED devices, and then through color The film forms an array of R, G, and B filter elements. Compared with the FMM (fine metal mask) RGB evaporation method commonly used for small-size OLEDs, it solves the problem of color crossover caused by the overhang of the FMM mask when the glass substrate is large, and is suitable for high-generation line production .
  • FMM fine metal mask
  • an embodiment of the present disclosure provides an image processing method applied to a display device, and the method includes:
  • the second RGBW brightness value is converted into an RGBW gray scale value.
  • said converting the RGB grayscale value of each pixel of the current frame picture into the RGB brightness value includes:
  • the RGB grayscale value of each pixel of the current frame is converted into RGB brightness value.
  • RGB grayscale value of each pixel of the current frame image is converted into RGB brightness value through the following calculation formula:
  • LR is the RGB brightness value of the red sub-pixel
  • R is the RGB gray-scale value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • G is the RGB gray-scale value of the green sub-pixel
  • LB is the blue sub-pixel RGB brightness value
  • B is the RGB grayscale value of the blue sub-pixel
  • GL is the maximum grayscale value
  • ⁇ is the Gamma value.
  • the converting the RGB brightness value into the first RGBW brightness value includes:
  • the RGB brightness value is converted into the first RGBW brightness value through the following calculation formula:
  • Lw is the RGBW brightness value of the white sub-pixel
  • Lr is the RGBW brightness value of the red sub-pixel
  • Lg is the RGBW brightness value of the green sub-pixel
  • Lb is the RGBW brightness value of the blue sub-pixel
  • LR is the RGBW brightness value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • LB is the RGB brightness value of the blue sub-pixel.
  • the brightness level of the current frame picture is the sum of the brightness values of the pixels of the current frame picture
  • the determining the brightness level of the current frame picture according to the first RGBW brightness value corresponding to each pixel includes:
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the number of pixels in the column direction of the display device
  • Lr i,j is the i-th
  • the RGBW brightness value of the red sub-pixel in j pixels Lg i,j is the RGBW brightness value of the green sub-pixel in the i-th pixel
  • Lb i,j is the blue in the i-th pixel
  • the j-th pixel The RGBW brightness value of the sub-pixel, Lw i,j is the RGBW brightness value of the white sub-pixel in the i-th and j-th pixels.
  • the brightness level of the current frame picture is the average brightness level of the current frame picture
  • the determining the brightness level of the current frame picture according to the first RGBW brightness value corresponding to each pixel includes:
  • sum is the sum of the brightness values of the pixels of the current frame
  • APL is the average brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device Number
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness values of the blue sub-pixels in the i-th and j-th pixels
  • Lwi ,j are the RGBW brightness values of the white sub-pixels in the i-th and j-th pixels.
  • the brightness level of the current frame picture is a relative brightness level
  • the determining the brightness level of the current frame picture according to the first RGBW brightness value corresponding to each pixel includes:
  • sum is the sum of the brightness values of the pixels of the current frame
  • K is the relative brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device Number
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness value of the blue sub-pixel in the i, j pixel
  • Lw i,j is the RGBW brightness value of the white sub pixel in the i, j pixel
  • sum max is the maximum brightness of the display device.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • the brightness gain value of the current frame picture is 1;
  • the brightness gain value of the current frame picture presents a decreasing trend as the average brightness level increases.
  • the predetermined value is an average level of brightness when a red solid color picture, a green solid color picture, or a blue solid color picture is displayed.
  • APL max is the average brightness level when any two of the red solid color screen, the green solid color screen, and the blue solid color screen are displayed.
  • the calculating the second RGBW brightness value according to the brightness gain value and the first RGBW brightness value includes:
  • L'r is the second RGBW brightness value of the red sub-pixel
  • L'g is the second RGBW brightness value of the green sub-pixel
  • L'b is the second RGBW brightness value of the blue sub-pixel
  • gain is the brightness Gain value
  • Lw is the first RGBW brightness value of the white sub-pixel
  • Lr is the first RGBW brightness value of the red sub-pixel
  • Lg is the first RGBW brightness value of the green sub-pixel
  • Lb is the first RGBW brightness of the blue sub-pixel value.
  • an image processing module including:
  • the first conversion circuit is used to convert the RGB grayscale value of each pixel of the current frame picture into an RGB brightness value
  • a second conversion circuit for converting the RGB brightness value into a first RGBW brightness value
  • the first determining circuit is configured to determine the brightness level of the current frame picture according to the first RGBW brightness value corresponding to each pixel;
  • a second determining circuit configured to determine the brightness gain value of the current frame of the picture according to the brightness level of the current frame of the picture
  • a third determining circuit configured to calculate a second RGBW brightness value according to the brightness gain value and the first RGBW brightness value
  • the third conversion circuit is used to convert the second RGBW brightness value into an RGBW grayscale value.
  • embodiments of the present disclosure provide a display device including the above-mentioned image processing module.
  • embodiments of the present disclosure provide a display device, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps of the image processing method of the first aspect described above.
  • embodiments of the present disclosure provide a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the image in the first aspect is realized. Processing method steps.
  • FIG. 1 is a schematic diagram of a RGB to RGBW conversion method in the related art
  • FIG. 2 is a schematic diagram of an image processing method in the related art
  • FIG. 3 is a schematic flowchart of an image processing method in an embodiment of the disclosure.
  • FIG. 5 is a schematic diagram of image processing effect comparison between the image processing method in the embodiment of the present disclosure and the image processing method in the related art;
  • FIG. 6 is a schematic structural diagram of an image processing module according to an embodiment of the disclosure.
  • FIG. 7 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
  • FIG. 8 is a circuit diagram of the configuration of a pixel according to an embodiment of the disclosure.
  • FIG. 9 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
  • the pixel arrangement is designed as four sub-pixels of R, G, B, and W.
  • R, G, B, and W When displaying a white screen, try to use white sub-pixels instead of R, G, and B to emit light to reduce power consumption.
  • the RGB to RGBW conversion algorithm is shown in Figure 1.
  • the RGBW brightness clipping (adjustment) method can be used to reduce the power consumption of the white light OLED display device.
  • the RGBW brightness clipping method it is achieved by reducing the maximum brightness when the pure color image is displayed.
  • the maximum brightness of the white sub-pixel in the standard display is 6, it is normally necessary to achieve the maximum brightness of the red sub-pixel 3, green
  • the maximum brightness of the sub-pixel 2 and the maximum brightness of the blue sub-pixel 1 but the maximum brightness of the red sub-pixel, green sub-pixel, and blue sub-pixel are reduced to 2.4, 1.6, and 0.8 respectively through brightness clipping, although it can Reduce the power consumption of the white light OLED display device to display a pure color picture, but reduce the maximum brightness of the red sub-pixel, green sub-pixel and blue sub-pixel, which will affect the contrast of the picture and cause partial picture color shift.
  • an embodiment of the present disclosure provides an image processing method applied to a display device, and the method includes the following steps.
  • Step 31 Convert the RGB grayscale value of each pixel of the current frame of the picture into an RGB brightness value.
  • the RGB grayscale value refers to the grayscale value of the current frame picture in the RGB display mode
  • the RGB brightness value refers to the brightness value in the RGB display mode
  • Step 32 Convert the RGB brightness value into a first RGBW brightness value.
  • the RGBW brightness value refers to the brightness value of the pixel in the RGBW display mode
  • the first RGBW brightness value is the first brightness value of the pixel in the RGBW display mode
  • Step 33 Determine the brightness level of the current frame image according to the first RGBW brightness value corresponding to each pixel.
  • the brightness level of the current frame picture may be the sum of the brightness values of the pixels of the current frame picture (or total brightness), or the average brightness level of the current frame picture, or the relative brightness level of the current frame picture. .
  • Step 34 Determine the brightness gain value of the current frame picture according to the brightness level of the current frame picture
  • Step 35 Calculate a second RGBW brightness value according to the brightness gain value and the first RGBW brightness value
  • Step 36 Convert the second RGBW brightness value into an RGBW grayscale value.
  • the RGBW grayscale value refers to the grayscale value of the pixel in the RGBW display mode.
  • the brightness gain value is determined based on the brightness level of the current frame of the picture, and the brightness of the first RGBW of the pixel is adjusted, which can reduce the power consumption of the display device without affecting the contrast of the picture.
  • the RGB grayscale value of each pixel of the current frame can be converted into the RGB brightness value by looking up the RGB grayscale-RGB brightness correspondence table.
  • a pre-configured grayscale-brightness correspondence table can be stored, and the table includes the brightness value corresponding to each grayscale value of the red sub-pixel, the green sub-pixel, and the blue sub-pixel.
  • the conversion from gray-scale to brightness is realized by searching the RGB gray-scale-RGB brightness correspondence table.
  • the brightness value corresponding to the gray scale value of the red sub-pixel, green sub-pixel and blue sub-pixel of each pixel of the current frame can be quickly obtained, which improves the running speed.
  • the RGB grayscale value of each pixel of the current frame can also be converted into RGB brightness value by the following calculation formula:
  • LR is the RGB brightness value of the red sub-pixel
  • R is the RGB gray-scale value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • G is the RGB gray-scale value of the green sub-pixel
  • LB is the blue sub-pixel RGB brightness value
  • B is the RGB grayscale value of the blue sub-pixel
  • GL is the maximum grayscale value
  • ⁇ is the Gamma value.
  • the value range of the Gamma value may be 1.8-2.6, and optionally, it may be 2.2.
  • the RGB brightness value can be converted into the first RGBW brightness value by the following calculation formula:
  • Lw is the RGBW brightness value of the white sub-pixel
  • Lr is the RGBW brightness value of the red sub-pixel
  • Lg is the RGBW brightness value of the green sub-pixel
  • Lb is the RGBW brightness value of the blue sub-pixel
  • LR is the RGBW brightness value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • LB is the RGB brightness value of the blue sub-pixel.
  • step 33 brightness level calculation
  • the brightness level of the current frame picture is the sum of the brightness values of the pixels of the current frame picture, and the following calculation formula may be used to determine the brightness level of the current frame picture:
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the number of pixels in the column direction of the display device
  • Lr i,j is the i-th
  • the RGBW brightness value of the red sub-pixel in j pixels Lg i,j is the RGBW brightness value of the green sub-pixel in the i-th pixel
  • Lb i,j is the blue in the i-th pixel
  • the j-th pixel The RGBW brightness value of the sub-pixel, Lw i,j is the RGBW brightness value of the white sub-pixel in the i-th and j-th pixels.
  • Lw i,j min(LR i,j ,LG i,j ,LB i,j )
  • LR i,j is the RGB brightness value of the red sub-pixel in the i-th pixel
  • LG i,j is the RGB brightness value of the green sub-pixel in the i-th pixel
  • LB i,j is the i-th pixel.
  • the brightness level of the current frame picture is the average brightness level of the current frame picture, and the following calculation formula may be used to determine the average brightness level of the current frame picture:
  • sum is the sum of the brightness values of the pixels of the current frame
  • APL is the average brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness values of the blue sub-pixels in the i-th and j-th pixels
  • Lwi ,j are the RGBW brightness values of the white sub-pixels in the i-th and j-th pixels.
  • the brightness level of the current frame picture is a relative brightness level
  • the following calculation formula may be used to determine the relative brightness level of the current frame picture:
  • sum is the sum of the brightness values of the pixels of the current frame
  • K is the relative brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device Number
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness value of the blue sub-pixel in the i, j pixel
  • Lw i,j is the RGBW brightness value of the white sub pixel in the i, j pixel
  • sum max is the maximum brightness of the display device.
  • sum max is the maximum brightness when any two of the red solid color screen, the green solid color screen, and the blue solid color screen are displayed.
  • the brightness level of the current frame can also be determined in other ways, for example, the area of the display window in the current frame is calculated, and the area of the display window in the current frame is used as the value. Describe the brightness level of the current frame.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • the determining the brightness gain value of the current frame picture according to the brightness level of the current frame picture includes:
  • the brightness gain value of the current frame picture is determined by looking up the brightness average level-brightness gain value correspondence table.
  • a pre-configured brightness average level-brightness gain value correspondence table can be stored.
  • the table includes the brightness gain value corresponding to each possible brightness average level. For the brightness average level of the current frame, by looking up the brightness average level- Brightness gain value correspondence table, you can find the corresponding brightness gain value. Through the look-up table method, the brightness gain value corresponding to the average brightness level of the current frame can be quickly obtained, which improves the running speed.
  • the brightness gain value of the current frame picture is 1; if the average brightness level of the current frame picture exceeds the A predetermined value, the brightness gain value of the current frame picture shows a decreasing trend as the average brightness level increases.
  • the brightness gain value of the current frame picture is 1, and the brightness of the RGB sub-pixels remains unchanged.
  • the current load of the display device is still Within the acceptable range, the brightness and color point of the RGB sub-pixels are kept unchanged, so that the image quality is maintained optimal.
  • the APL value of the current frame exceeds APLtyp, the current load of the display device gradually increases.
  • the brightness gain value gain shows a decreasing trend as the APL increases, so that the brightness of the RGB sub-pixels is reduced to reduce power consumption.
  • the value of gain may linearly decrease as the average brightness level increases. Please refer to 1 in FIG. 4, the value of gain The value can also decrease non-linearly with the increase of the average brightness level, please refer to Figure 4 as shown in 2.
  • the minimum gain g min can be set to avoid excessive white supplementation, which affects the contrast of the picture.
  • the predetermined value APLtyp is an average level of brightness when a red pure color picture, a green pure color picture or a blue pure color picture is displayed.
  • APL max is the average brightness level when any two of the red solid color screen, the green solid color screen, and the blue solid color screen are displayed.
  • the following calculation formula is used to calculate the second RGBW brightness value:
  • L'r is the second RGBW brightness value of the red sub-pixel
  • L'g is the second RGBW brightness value of the green sub-pixel
  • L'b is the second RGBW brightness value of the blue sub-pixel
  • L'w is white
  • gain is the brightness gain value
  • Lw is the first RGBW brightness value of the white sub-pixel
  • Lr is the first RGBW brightness value of the red sub-pixel
  • Lg is the first RGBW of the green sub-pixel
  • the brightness value, Lb is the first RGBW brightness value of the blue sub-pixel.
  • step 32 if the calculation formula in step 32 is used to calculate the RGBW brightness value, then one of Lr, Lg, and Lb is 0. In this step, in fact, only L'r, L'g, L' Two of b can be recalculated RGBW.
  • the brightness values of the R, G, and B sub-pixels are correspondingly reduced according to the gain value.
  • the lost brightness will cause a decrease in contrast.
  • the lost brightness part needs to be supplemented with white.
  • the picture load is related to the picture load. The higher the gain value of the picture with low load, the smaller the supplementary white, which has little effect on the picture quality.
  • the supplemented brightness is (1-gain)*(Lr+Lg+Lb)/3.
  • the supplemented brightness may also be calculated by other calculation methods.
  • the second RGBW brightness value can be converted into an RGBW gray scale value by searching the RGBW brightness-RGBW gray scale correspondence table.
  • a pre-configured RGBW brightness-RGBW grayscale correspondence table can be stored, and the table includes the grayscale value corresponding to each brightness value of the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel.
  • the conversion from brightness to gray scale is realized by searching the RGBW brightness-RGBW gray scale correspondence table.
  • the second RGBW brightness value can be quickly converted into an RGBW grayscale value, which improves the running speed.
  • the second RGBW brightness value can be converted into an RGBW grayscale value by the following calculation formula:
  • L'r is the second RGBW brightness value of the red sub-pixel
  • L'g is the second RGBW brightness value of the green sub-pixel
  • L'b is the second RGBW brightness value of the blue sub-pixel
  • L'w is white
  • r is the RGBW gray-scale value of the red sub-pixel
  • g is the RGBW gray-scale value of the green sub-pixel
  • b is the RGBW gray-scale value of the blue sub-pixel
  • w is the RGBW gray-scale value of the white sub-pixel Grayscale value
  • GL is the maximum grayscale value
  • ⁇ is the Gamma value.
  • the value range of Gamma value can be 1.8 ⁇ 2.6, optional, it can be 2.2.
  • FIG. 5 is a schematic diagram of image processing effect comparison between the image processing method in the embodiment of the present disclosure and the image processing method in the related art.
  • the original image on the leftmost side has more pure colors and consumes more power consumption (for example, normalized The power consumption value is 1.0).
  • the power consumption is reduced to about 0.42, the brightness is significantly reduced and the contrast deteriorates.
  • the image proposed in the embodiment of the present disclosure is used.
  • the processing method is processed (corresponding to the picture on the right), the overall brightness is significantly improved, and the picture details are more obvious.
  • the power consumption is 0.45, which is only an increase of 7% compared with the image processing method in the related technology, and the color change is small. Acceptable range.
  • the above-mentioned image processing method can be used to process all pictures. It is also possible to use the above-mentioned image processing method for processing only for a pure color screen.
  • the display device in the embodiment of the present disclosure is a white light OLED display device.
  • an image processing circuit 60 including:
  • the first conversion circuit 61 is configured to convert the RGB grayscale value of each pixel of the current frame picture into an RGB brightness value
  • the second conversion circuit 62 is configured to convert the RGB brightness value into a first RGBW brightness value
  • the first determining circuit 63 is configured to determine the brightness level of the current frame picture according to the first RGBW brightness value corresponding to each pixel;
  • the second determining circuit 64 is configured to determine the brightness gain value of the current frame picture according to the brightness level of the current frame picture;
  • the calculation circuit 65 is configured to calculate a second RGBW brightness value according to the brightness gain value and the first RGBW brightness value;
  • the third conversion circuit 66 is configured to convert the second RGBW brightness value into an RGBW grayscale value.
  • the first conversion circuit 61 is configured to convert the RGB grayscale value of each pixel of the current frame into an RGB brightness value by looking up the RGB grayscale-RGB brightness correspondence table.
  • the first conversion circuit 61 converts the RGB grayscale value of each pixel of the current frame into the RGB brightness value through the following calculation formula:
  • LR is the RGB brightness value of the red sub-pixel
  • R is the RGB gray-scale value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • G is the RGB gray-scale value of the green sub-pixel
  • LB is the blue sub-pixel RGB brightness value
  • B is the RGB grayscale value of the blue sub-pixel
  • GL is the maximum grayscale value
  • ⁇ is the Gamma value.
  • the second conversion circuit 62 is configured to convert the RGB brightness value into the first RGBW brightness value through the following calculation formula:
  • Lw is the RGBW brightness value of the white sub-pixel
  • Lr is the RGBW brightness value of the red sub-pixel
  • Lg is the RGBW brightness value of the green sub-pixel
  • Lb is the RGBW brightness value of the blue sub-pixel
  • LR is the RGBW brightness value of the red sub-pixel
  • LG is the RGB brightness value of the green sub-pixel
  • LB is the RGB brightness value of the blue sub-pixel.
  • the first determining circuit 63 is configured to determine the brightness level of the current frame picture by using the following calculation formula when the brightness level of the current frame picture is the sum of the brightness values of the pixels of the current frame picture:
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the number of pixels in the column direction of the display device
  • Lr i,j is the i-th
  • the RGBW brightness value of the red sub-pixel in j pixels Lg i,j is the RGBW brightness value of the green sub-pixel in the i-th pixel
  • Lb i,j is the blue in the i-th pixel
  • the j-th pixel The RGBW brightness value of the sub-pixel, Lw i,j is the RGBW brightness value of the white sub-pixel in the i-th and j-th pixels.
  • the first determining circuit 63 is configured to determine the average brightness level of the current frame picture by using the following calculation formula when the brightness level of the current frame picture is the average brightness level of the current frame picture:
  • sum is the sum of the brightness values of the pixels of the current frame
  • APL is the average brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness values of the blue sub-pixels in the i-th and j-th pixels
  • Lwi ,j are the RGBW brightness values of the white sub-pixels in the i-th and j-th pixels.
  • the first determining circuit 63 is configured to determine the relative brightness level of the current frame picture by using the following calculation formula when the brightness level of the current frame picture is a relative brightness level:
  • sum is the sum of the brightness values of the pixels of the current frame
  • K is the relative brightness of the current frame
  • l1 is the number of pixels in the row direction of the display device
  • l2 is the pixel in the column direction of the display device Number
  • Lr i,j is the RGBW brightness value of the red sub-pixel in the i, j pixel
  • Lg i,j is the RGBW brightness value of the green sub-pixel in the i, j pixel
  • Lb i,j is The RGBW brightness value of the blue sub-pixel in the i, j pixel
  • Lw i,j is the RGBW brightness value of the white sub pixel in the i, j pixel
  • sum max is the maximum brightness of the display device.
  • the second determining circuit 64 is configured to determine the brightness gain value of the current frame picture by looking up the brightness average level-brightness gain value correspondence table.
  • the second determination circuit 64 is configured to determine the average brightness level of the current frame image according to the sum of the brightness values of the pixels of the current frame image; and determine the average brightness level-brightness gain value correspondence table by looking up The brightness gain value of the current frame picture.
  • the second determining circuit 64 is configured to determine according to the relative brightness level K of the current frame picture, the maximum brightness sum max of the display device, and the average brightness level APL max corresponding to the maximum brightness of the display device The brightness average level of the current frame picture; and determining the brightness gain value of the current frame picture by looking up the brightness average level-brightness gain value correspondence table.
  • the brightness gain value of the current frame picture is 1; if the average brightness level of the current frame picture exceeds the predetermined value, the current frame picture The brightness gain value of the frame picture shows a decreasing trend as the average brightness level increases.
  • the predetermined value is an average level of brightness when a red solid color picture, a green solid color picture, or a blue solid color picture is displayed.
  • APL max is the average brightness level when any two of the red solid color screen, the green solid color screen, and the blue solid color screen are displayed.
  • the calculation circuit 65 is configured to use the following calculation formula to calculate the second RGBW brightness value:
  • L'r is the second RGBW brightness value of the red sub-pixel
  • L'g is the second RGBW brightness value of the green sub-pixel
  • L'b is the second RGBW brightness value of the blue sub-pixel
  • gain is the brightness Gain value
  • Lw is the first RGBW brightness value of the white sub-pixel
  • Lr is the first RGBW brightness value of the red sub-pixel
  • Lg is the first RGBW brightness value of the green sub-pixel
  • Lb is the first RGBW brightness of the blue sub-pixel value.
  • the embodiment of the present disclosure also provides a display device including the above-mentioned image processing circuit.
  • the display device may include a display panel 116, a gate driver 118, a data driver 120, a timing controller 124, and an image processing circuit 60.
  • the display panel 116 may include m data lines D1 ⁇ Dm, m sensing lines S1 ⁇ Sm, n gate lines G1 ⁇ Gn, n sensing control lines SC1 ⁇ SCn, and m ⁇ n pixels 122.
  • the m data lines D1 to Dm and the m sensing lines S1 to Sm face each other one by one and form m pairs.
  • n gate lines G1 ⁇ Gn and n sensing control lines SC1 ⁇ SCn are opposed to each other one by one and form n pairs.
  • the pixel 122 may be formed in a defined area by crossing the m pairs of the data line D and the sensing line S with the n pairs of the gate line G and the sensing control line SC.
  • a first signal line and a second signal line may be formed on the display panel 116, the first signal line is used to apply the first driving voltage Vdd to each of the pixels 122, and the second signal line is used to apply the first driving voltage Vdd to each of the pixels 122.
  • Two driving voltages Vss are applied to each of the pixels 122.
  • the first driving voltage Vdd may be generated in a high-potential driving voltage source Vdd not shown in the figure.
  • the second driving voltage Vss may be generated in a low-potential driving voltage Vss not shown in the figure.
  • the timing controller 124 may receive timing signals, such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a dot clock signal DCLK, a data enable signal DE, etc., from an external graphics controller (not shown). In addition, the timing controller 124 may derive the data control signal DDC and the gate control signal GDC from the received timing signal.
  • the data control signal DDC is used to control the operation timing of the data driver 120.
  • the gate control signal GDC is used to control the operation timing of the gate driver 118.
  • the image processing circuit 60 can convert digital video data RGB of three colors from the outside (for example, an external graphics controller) into digital video data RGBW of four colors. In addition, the image processing circuit 60 can adjust the brightness of the digital video data RGBW of the four colors.
  • the compensated digital video data RGBW is applied from the image processing circuit 60 to the timing controller 124. Then, the timing controller 124 may rearrange the compensated digital video data RGBW into a format suitable for defining the display panel 116. The rearranged digital video data RGBW is applied from the timing controller 124 to the data driver 120.
  • the gate driver 118 may generate scan pulses.
  • the scan pulse may be sequentially applied to the gate lines G1 to Gn from the gate driver 118 on the display panel 116.
  • the gate driver 118 can output the sensing control signal SCS to the sensing control lines SC1 to SCn on the display panel 116.
  • the sensing control signal SCS is used to control a sensing switch (not shown) included in each of the pixels.
  • the gate driver 118 outputs both the scan pulse SP and the sensing control signal SCS
  • the present disclosure is not limited thereto.
  • the display device may additionally include a sensing switch control driver that outputs the sensing control signal SCS under the control of the timing controller 124.
  • the data driver 120 may be controlled by the data control signal DDC applied from the timing controller 124. In addition, the data driver 120 may apply a sensing voltage to the sensing lines S1 ⁇ Sm. In addition, the data driver 120 may apply analog data voltages to the data lines D1 ⁇ Dm on the display panel 116. In order to apply analog data voltages to the data lines D1 to Dm, the data driver 120 may convert digital video data RGBW of four colors into analog data voltages. The digital video data RGBW of the four colors are adjusted in brightness by the image processing circuit 60 and passed through The timing controller 124 is applied from the image processing circuit 60.
  • the data lines D1 ⁇ Dm are connected to the pixels 122. In this way, the data voltage can be transferred to the pixel 122 via the data lines D1 to Dm.
  • the sensing lines S1 ⁇ Sm are connected to the pixels 122.
  • the sensing lines S1 to Sm can be used not only to apply a sensing voltage to the pixel 122 but also to measure the sensing voltage.
  • the sensing voltage can be obtained by charging the initialization voltage into the pixel through the corresponding sensing line S and entering the pixel in the floating state.
  • the data driver 120 can output the data voltage and the sensing voltage and detect the sensing voltage
  • the present invention is not limited thereto.
  • the display device may additionally include a sensing driver that outputs and detects the sensing voltage.
  • the image processing circuit 60 may be built in the timing controller 124. Alternatively, in the display device, the image processing circuit 60 is provided separately from the timing controller 124. In addition, it is described that the image processing circuit 60 is applied to the display device, but the present disclosure is not limited to this. In other words, the image processing circuit 60 can be applied to wireless communication devices, such as wireless mobile phones, digital cameras, camcorders, digital multi-players, personal digital assistants, PDAs, video game consoles, different types of video equipment, and advanced viewing stations ( For example, a television receiver).
  • wireless communication devices such as wireless mobile phones, digital cameras, camcorders, digital multi-players, personal digital assistants, PDAs, video game consoles, different types of video equipment, and advanced viewing stations ( For example, a television receiver).
  • FIG. 8 is a circuit diagram of the configuration of a pixel in an embodiment of the present disclosure.
  • the pixel 122 disclosed in the present disclosure may be one of red, green, blue, and white pixels.
  • the pixel 122 may be referred to as a sub-pixel.
  • the sub-pixel 122 may include a scan switch SW, a driving switch DR, a sensing switch SEW, an organic light emitting diode OLED, and a storage capacitor Cst.
  • the scan switch SW may be a transistor for transferring a data voltage on the data line Di.
  • the scan switch SW can be controlled by the scan pulse SP on the gate line Gj and is connected between the data line Di and the first node N1.
  • the driving switch DR may be a transistor that adjusts the current flowing through the organic light emitting transistor diode OLED by the voltage between the first node N1 and the second node N2 connected to the gate and source of the transistor.
  • the driving switch DR may include a gate connected to the first node N1, a source connected to the second node N2, and a drain connected to the first driving voltage line Vdd.
  • the sensing switch SEW may be a transistor for initializing the second node N2 and detecting the threshold voltage of the driving switch DR via the sensing line Si. Such a sensing switch SEW can be controlled by the sensing control signal SCS on the sensing control line SCj and is connected between the second node N2 and the third node N3.
  • the organic light emitting diode OLED includes an anode electrode and a cathode electrode.
  • the anode electrode may be connected to the second node N2 and the cathode electrode may be connected to the second driving voltage line Vss.
  • the storage capacitor Cst may be connected between the first node N1 and the second node N2. In other words, the storage capacitor Cst may be connected between the gate and source of the driving switch DR.
  • the display device may be a white light OLED display device.
  • an embodiment of the present disclosure also provides a display device 90, including a processor 91, a memory 92, a computer program stored in the memory 92 and capable of running on the processor 91, and the computer program is executed by the processor 91.
  • a display device 90 including a processor 91, a memory 92, a computer program stored in the memory 92 and capable of running on the processor 91, and the computer program is executed by the processor 91.
  • the embodiments of the present disclosure also provide a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, each process of the above-mentioned image processing method embodiment is realized, and the same technology can be achieved. The effect, in order to avoid repetition, will not be repeated here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.
  • the above-mentioned method disclosed in the present disclosure may be applied to a processor or implemented by a processor.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logic block diagrams disclosed in the present disclosure can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology of this article can be implemented through modules (such as procedures, functions, etc.) that perform the functions of this article.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

提供一种图像处理方法、图像处理模组及显示装置，该图像处理方法包括：将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值（31）；将RGB亮度值转换为第一RGBW亮度值（32）；根据各像素对应的第一RGBW亮度值，确定当前帧画面的亮度水平（33）；根据当前帧画面的亮度水平，确定当前帧画面的亮度增益值（34）；根据亮度增益值和第一RGBW亮度值，计算第二RGBW亮度值（35）；将调整后的RGBW亮度值转换为RGBW灰阶值（36）。

Description

图像处理方法、图像处理模组及显示装置
相关申请的交叉引用
本申请主张在2020年1月22日在中国提交的中国专利申请号No.202010074912.9的优先权，其全部内容通过引用包含于此。
技术领域
本公开实施例涉及图像处理技术领域，尤其涉及一种图像处理方法、图像处理模组及显示装置。
背景技术
大尺寸OLED(有机发光二极管)显示装置目前成熟的量产技术普遍采用白光OLED器件和彩膜阵列集成的发光方式，它采用Open MASK(开放式掩膜板)蒸镀白光OLED器件，再通过彩膜形成R、G、B三种滤光单元阵列。与小尺寸OLED常用的FMM(精细金属掩膜板)RGB蒸镀方式相比，它很好地解决了在玻璃基板较大时，因FMM MASK悬垂造成的串色等问题，适合高世代线生产。
发明内容
第一方面，本公开实施例提供了一种图像处理方法，应用于显示装置，所述方法包括：
将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值；
将所述RGB亮度值转换为第一RGBW亮度值；
根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平；
根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值；
根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值；
将所述第二RGBW亮度值转换为RGBW灰阶值。
可选的，所述将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度 值包括：
通过查找RGB灰阶-RGB亮度对应表，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值。
可选的，通过以下计算公式，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值：
LR＝(R/GL) γ，LG＝(G/GL) γ，LB＝(B/GL) γ；
其中，LR为红色子像素的RGB亮度值，R为红色子像素的RGB灰阶值，LG为绿色子像素的RGB亮度值，G为绿色子像素的RGB灰阶值，LB为蓝色子像素的RGB亮度值，B为蓝色子像素的RGB灰阶值，GL为最大灰阶值，γ是Gamma值。
可选的，所述将所述RGB亮度值转换为第一RGBW亮度值包括：
通过以下计算公式，将所述RGB亮度值转换为第一RGBW亮度值：
Lw＝min(LR,LG,LB)，Lr＝LR-Lw，Lg＝LG-Lw，Lb＝LB-Lw；
其中，Lw为白色子像素的RGBW亮度值，Lr为红色子像素的RGBW亮度值，Lg为绿色子像素的RGBW亮度值，Lb为蓝色子像素的RGBW亮度值，LR为红色子像素的RGB亮度值，LG为绿色子像素的RGB亮度值，LB为蓝色子像素的RGB亮度值。
可选的，所述当前帧画面的亮度水平为当前帧画面各像素的亮度值总和，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
采用以下计算公式，确定所述当前帧画面的亮度水平：
Figure PCTCN2021072881-appb-000001
其中，sum为当前帧画面各像素的亮度值总和，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
可选的，所述当前帧画面的亮度水平为当前帧画面的亮度平均水平，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
采用以下计算公式，确定所述当前帧画面的亮度平均水平：
Figure PCTCN2021072881-appb-000002
APL＝sum/(l1*l2)
其中，sum为当前帧画面各像素的亮度值总和，APL为当前帧画面的亮度平均水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
可选的，所述当前帧画面的亮度水平为亮度相对水平，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
采用以下计算公式，确定所述当前帧画面的亮度相对水平：
Figure PCTCN2021072881-appb-000003
K＝sum/sum max
其中，sum为当前帧画面各像素的亮度值总和，K为当前帧画面的亮度相对水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值，sum max为所述显示装置的最大亮度。
可选的，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的 亮度增益值包括：
根据所述当前帧画面各像素的亮度值总和，确定当前帧画面的亮度平均水平；
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
根据当前帧画面的亮度相对水平K、所述显示装置的最大亮度sum max及所述显示装置的最大亮度对应的亮度平均水平APL max，确定当前帧画面的亮度平均水平；及
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，若所述当前帧画面的亮度平均水平未超过预定值，所述当前帧画面的亮度增益值为1；
若所述当前帧画面的亮度平均水平超过所述预定值，所述当前帧画面的亮度增益值随着所述亮度平均水平的增大呈递减趋势。
可选的，所述预定值为显示红色纯色画面、绿色纯色画面或蓝色纯色画面时的亮度平均水平。
可选的，APL max为显示红色纯色画面、绿色纯色画面和蓝色纯色画面任意两种时的亮度平均水平。
可选的，所述根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值包括：
采用以下计算公式，计算第二RGBW亮度值：
L′r＝gain·Lr，L′g＝gain·Lg，L′b＝gain·Lb，L′w＝Lw+(1-gain)*(Lr+Lg+Lb)/3；
其中，L′r为红色子像素的第二RGBW亮度值，L′g为绿色子像素的第二RGBW亮度值，L′b为蓝色子像素的第二RGBW亮度值，gain为所述亮度增益值，Lw为白色子像素的第一RGBW亮度值，Lr为红色子像素的第一RGBW亮度值，Lg为绿色子像素的第一RGBW亮度值，Lb为蓝色子像素的第一RGBW亮度值。
第二方面，本公开实施例提供了一种图像处理模组，包括：
第一转换电路，用于将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值；
第二转换电路，用于将所述RGB亮度值转换为第一RGBW亮度值；
第一确定电路，用于根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平；
第二确定电路，用于根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值；
第三确定电路，用于根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值；
第三转换电路，用于将所述第二RGBW亮度值转换为RGBW灰阶值。
第三方面，本公开实施例提供了一种显示装置，包括上述图像处理模组。
第四方面，本公开实施例提供了一种显示装置，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述第一方面的图像处理方法的步骤。
第五方面，本公开实施例提供了一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现上述第一方面的图像处理方法的步骤。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为相关技术中的RGB到RGBW转换方法的示意图；
图2为相关技术中的图像处理方法的示意图；
图3为本公开实施例中的图像处理方法的流程示意图；
图4为本公开实施例中的亮度平均水平和亮度增益值的关系示意图；
图5是应用本公开实施例中的图像处理方法与相关技术中的图像处理方法的图像处理效果对比示意图；
图6为本公开实施例的图像处理模组的结构示意图；
图7为本公开实施例的一种显示装置的结构示意图；
图8为本公开实施例的像素的配置的一种电路图；
图9为本公开实施例的一种显示装置的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在大尺寸OLED显示装置像素设计中，像素排列设计为R、G、B、W四个子像素排列，在显示白色画面时，尽量使用白色子像素取代R、G、B发光以降低功耗，相关的RGB到RGBW转换算法如图1所示。
这种方式虽然降低了白色画面的功耗，但是在显示纯色画面时，只通过点亮纯色子像素显示，而因为白色OLED器件透过彩膜时损失约2/3亮度，其消耗功耗较大。举例来说，一个55”OLED TV在各画面下功耗如表1所示。在白色全屏画面下，功耗为174W，但是在显示全屏黄色画面时，功耗高达385.8W，达到白色功耗的2.2倍。虽然这种重负载画面不经常显示，但在系统设计时要考虑到峰值功耗出现的情况，电源板的设计要按照最大规格进行设计，功耗和成本都很高，因此需要开发降低功耗的方法。
表1 65UHD OLED TV功耗
Figure PCTCN2021072881-appb-000004
Figure PCTCN2021072881-appb-000005
相关方案中，可以采用RGBW亮度clipping(调整)方法降低白光OLED显示装置的功耗。RGBW亮度clipping方法中，通过降低纯色画面显示时的最大亮度来实现，如图2所示，假设在标准显示中白色子像素的最大亮度是6，正常需要实现红色子像素的最大亮度3，绿色子像素的最大亮度2和蓝色子像素的最大亮度1，但通过亮度clipping的方式，将红色子像素、绿色子像素和蓝色子像素的最大亮度分别降到2.4、1.6和0.8，虽然可以降低白光OLED显示装置显示纯色画面的功耗，但使得红色子像素、绿色子像素和蓝色子像素的最大亮度降低，会影响画面的对比度，并造成局部画面色偏。
为解决上述问题，请参考图3，本公开实施例提供一种图像处理方法，应用于显示装置，所述方法包括下述步骤。
步骤31：将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值。
本公开实施例中，RGB灰阶值是指当前帧画面在RGB显示模式下的灰阶值；RGB亮度值是指在RGB显示模式下的亮度值。
步骤32：将所述RGB亮度值转换为第一RGBW亮度值。
本公开实施例中，所述RGBW亮度值是指在RGBW显示模式下的像素的亮度值，所述第一RGBW亮度值为像素在RGBW显示模式下的像素的第一亮度值。
步骤33：根据各像素对应的所述第一RGBW亮度值，确定所述当前帧画面的亮度水平。
在一些实施例中，所述当前帧画面的亮度水平可以为当前帧画面各像素的亮度值总和(或称总亮度)，或为当前帧画面的亮度平均水平，或当前帧画面的亮度相对水平。
步骤34：根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值；
步骤35：根据所述亮度增益值和所述第一RGBW亮度值，计算第二 RGBW亮度值；
步骤36：将所述第二RGBW亮度值转换为RGBW灰阶值。
本公开实施例中，所述RGBW灰阶值是指在RGBW显示模式下的像素的灰阶值。
本公开实施例中，基于当前帧画面的亮度水平确定亮度增益值，对像素的第一RGBW的亮度进行调整，可以降低显示装置的功耗，且不影响画面的对比度。
下面对上述实施例中的各个步骤的具体实现方法进行详细说明。
1)上述步骤31：灰阶到亮度的转换(G to L conversion)
在本公开的一些实施例中，可以通过查找RGB灰阶-RGB亮度对应表，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值。
即，可以存储一预先配置好的灰阶-亮度对应表，表中包括红色子像素、绿色子像素和蓝色子像素的每一灰阶值对应的亮度值。针对当前帧画面的每一像素中的每一子像素(红色子像素、绿色子像素和蓝色子像素)，通过查找RGB灰阶-RGB亮度对应表，实现灰阶到亮度的转换。
通过查表方式，可以快速获取当前帧画面的每个像素的红色子像素、绿色子像素和蓝色子像素的灰阶值对应的亮度值，提高了运行速度。
在本公开的另外一些实施例中，还可以通过以下计算公式，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值：
LR＝(R/GL) γ，LG＝(G/GL) γ，LB＝(B/GL) γ；
其中，LR为红色子像素的RGB亮度值，R为红色子像素的RGB灰阶值，LG为绿色子像素的RGB亮度值，G为绿色子像素的RGB灰阶值，LB为蓝色子像素的RGB亮度值，B为蓝色子像素的RGB灰阶值，GL为最大灰阶值，γ是Gamma值。
假设显示装置具有8bit灰度等级，GL为255。
在一些实施例中，Gamma值的取值范围可以为1.8～2.6，可选的，可以为2.2。
2)上述步骤32：RGB到RGBW的亮度转换(RGB to RGBW conversion)
在本公开的一些实施例中，可以通过以下计算公式，将所述RGB亮度值 转换为第一RGBW亮度值：
Lw＝min(LR,LG,LB)，Lr＝LR-Lw，Lg＝LG-Lw，Lb＝LB-Lw；
其中，Lw为白色子像素的RGBW亮度值，Lr为红色子像素的RGBW亮度值，Lg为绿色子像素的RGBW亮度值，Lb为蓝色子像素的RGBW亮度值，LR为红色子像素的RGB亮度值，LG为绿色子像素的RGB亮度值，LB为蓝色子像素的RGB亮度值。
根据上述公式可以看出，由于Lw＝min(LR,LG,LB)，则Lr、Lg、Lb其中之一为0。
3)上述步骤33：亮度水平计算
本公开的一些实施例中，所述当前帧画面的亮度水平为当前帧画面各像素的亮度值总和，可以采用以下计算公式，确定所述当前帧画面的亮度水平：
Figure PCTCN2021072881-appb-000006
其中，sum为当前帧画面各像素的亮度值总和，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中白色子像素的RGBW亮度值。
在本公开的一些实施例中，Lw i，j＝min(LR i，j,LG i，j,LB i，j)
LR i，j为第i，j个像素中的红色子像素的RGB亮度值，LG i，j为第i，j个像素中的绿色子像素的RGB亮度值，LB i，j为第i，j个像素中的蓝色子像素的RGB亮度值。
在一些实施例中，所述当前帧画面的亮度水平为当前帧画面的亮度平均水平，可以采用以下计算公式，确定所述当前帧画面的亮度平均水平：
Figure PCTCN2021072881-appb-000007
APL＝sum/(l1*l2)
其中，sum为当前帧画面各像素的亮度值总和，APL为当前帧画面的亮度平均水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
在一些实施例中，所述当前帧画面的亮度水平为亮度相对水平，可以采用以下计算公式，确定所述当前帧画面的亮度相对水平：
Figure PCTCN2021072881-appb-000008
K＝sum/sum max
其中，sum为当前帧画面各像素的亮度值总和，K为当前帧画面的亮度相对水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值，sum max为所述显示装置的最大亮度。
在一些实施例中，sum max为显示红色纯色画面、绿色纯色画面和蓝色纯色画面任意两种时的最大亮度。
在本公开的其他一些实施例中，还可以通过其他方式确定所述当前帧画面的亮度水平，例如，计算当前帧画面中的显示窗口的面积，采用当前帧画面中的显示窗口的面积作为所述当前帧画面的亮度水平。
4)上述步骤34：gain确定(Gain Estimation)
在本公开的一些实施例中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
根据所述当前帧画面各像素的亮度值总和，确定当前帧画面的亮度平均水平；
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
在本公开的一些实施例中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
在一些实施例中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
根据当前帧画面的亮度相对水平K、所述显示装置的最大亮度sum max及所述显示装置的最大亮度对应的亮度平均水平APL max，确定当前帧画面的亮度平均水平；
通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
即，可以存储一预先配置好的亮度平均水平-亮度增益值对应表，表中包括每一可能的亮度平均水平对应的亮度增益值，针对当前帧画面的亮度平均水平，通过查找亮度平均水平-亮度增益值对应表，可以找到对应的亮度增益值。通过查表方式，可以快速获取当前帧画面的亮度平均水平对应的亮度增益值，提高了运行速度。
本公开实施例中，可选的，若所述当前帧画面的亮度平均水平未超过预定值，所述当前帧画面的亮度增益值为1；若所述当前帧画面的亮度平均水平超过所述预定值，所述当前帧画面的亮度增益值随着所述亮度平均水平的增大呈递减趋势。
请参考图4，当当前帧画面的APL值未超过APLtyp(即预定值)时，所述当前帧画面的亮度增益值为1，RGB子像素的亮度保持不变，此时显示装置电流负荷仍在可接收范围内，保持RGB子像素的亮度及色点不变，使画质维持最优。当当前帧画面的APL值超过APLtyp时，显示装置的电流负荷逐渐变大，此时，亮度增益值gain随着APL的增大呈递减趋势，使得RGB子 像素的亮度降低以减小功耗。
本公开实施例中，可选的，当当前帧画面的APL值超过APLtyp时，gain的值可以随着所述亮度平均水平的增大线性下降，请参考图4中的①所示，gain的值也可以随着所述亮度平均水平的增大非线性下降，请参考图4中的②所示。
本公开实施例中，可以设定gain的最小值g min，以避免补充的白色过多，影响画面的对比度。
本公开实施例中，可选的，所述预定值APLtyp为显示红色纯色画面、绿色纯色画面或蓝色纯色画面时的亮度平均水平。
在一些实施例中，APL max为显示红色纯色画面、绿色纯色画面和蓝色纯色画面任意两种时的亮度平均水平。
5)上述步骤35：RGBW重计算(RGBW Recalculation)
在本公开的一些实施例中，可选的，采用以下计算公式，计算第二RGBW亮度值：
L′r＝gain·Lr，L′g＝gain·Lg，L′b＝gain·Lb，L′w＝Lw+(1-gain)*(Lr+Lg+Lb)/3；
其中，L′r为红色子像素的第二RGBW亮度值，L′g为绿色子像素的第二RGBW亮度值，L′b为蓝色子像素的第二RGBW亮度值，L′w为白色子像素的第二RGBW亮度值，gain为所述亮度增益值，Lw为白色子像素的第一RGBW亮度值，Lr为红色子像素的第一RGBW亮度值，Lg为绿色子像素的第一RGBW亮度值，Lb为蓝色子像素的第一RGBW亮度值。
需要了解的是，若采用步骤32中的计算公式计算RGBW亮度值，则Lr、Lg、Lb其中之一为0，在该步骤中，实际上只需要对L′r、L′g、L′b中的其中两个进行RGBW重计算即可。
本步骤中，R、G、B子像素的亮度值根据gain值的大小进行了相应的降低，损失的亮度会造成对比度的下降，需要把损失的亮度部分用白色来进行补充，补充的亮度与画面负载程度有关，负载不大的画面，gain值越大，补充白色较小，对画质影响小，负载大的画面，gain值较小，补充白色较多，但人眼对混色色点变化并不敏感，而对对比度更敏感，因此对主观画质感受并 无太大影响。
上述实施例中，补充的亮度为(1-gain)*(Lr+Lg+Lb)/3，当然，在本公开的其他一些实施例中，补充的亮度也可以采用其他计算方法。
6)上述步骤36：RGBW亮度值到RGBW灰阶值的转换
在本公开的一些实施例中，可以通过查找RGBW亮度-RGBW灰阶对应表，将所述第二RGBW亮度值转换为RGBW灰阶值。
即，可以存储一预先配置好的RGBW亮度-RGBW灰阶对应表，表中包括红色子像素、绿色子像素、蓝色子像素和白色子像素的每一亮度值对应的灰阶值。针对每一像素中的每一子像素(红色子像素、绿色子像素、蓝色子像素和白色子像素)，通过查找RGBW亮度-RGBW灰阶对应表，实现亮度到灰阶的转换。
通过查表方式，可以快速将所述第二RGBW亮度值转换为RGBW灰阶值，提高了运行速度。
在本公开的另外一些实施例中，还可以通过以下计算公式，将所述第二RGBW亮度值转换为RGBW灰阶值：
Figure PCTCN2021072881-appb-000009
其中，L′r为红色子像素的第二RGBW亮度值，L′g为绿色子像素的第二RGBW亮度值，L′b为蓝色子像素的第二RGBW亮度值，L′w为白色子像素的第二RGBW亮度值，r为红色子像素的RGBW灰阶值，g为绿色子像素的RGBW灰阶值，b为蓝色子像素的RGBW灰阶值，w为白色子像素的RGBW灰阶值，GL为最大灰阶值，γ是Gamma值。
假设显示装置具有8bit灰度等级，GL为255。
Gamma值的取值范围可以为1.8～2.6，可选的，可以为2.2。
图5是应用本公开实施例中的图像处理方法与相关技术中的图像处理方法的图像处理效果对比示意图，最左侧的原图纯色较多，并消耗较多功耗(例如归一化的功耗值为1.0)，采用RGBW亮度clipping图像处理方法之后(对应中间的图)，虽然功耗降低了，约为0.42，但是亮度明显降低，对比度变差，采用本公开实施例中提出的图像处理方法处理后(对应右侧的图)，整体亮度明显提高，画面细节更加明显，功耗为0.45，与相关技术中的图像处理方法 相比只增加了7％，色彩变化较小，仍在可接受范围。
本公开实施例中，可以对所有画面采用上述图像处理方法进行处理。也可以仅针对纯色画面采用上述图像处理方法进行处理。
本公开实施例中的显示装置为白光OLED显示装置。
请参考图6，本公开实施例还提供一种图像处理电路60，包括：
第一转换电路61，用于将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值；
第二转换电路62，用于将所述RGB亮度值转换为第一RGBW亮度值；
第一确定电路63，用于根据各像素对应的所述第一RGBW亮度值，确定所述当前帧画面的亮度水平；
第二确定电路64，用于根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值；
计算电路65，用于根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值；
第三转换电路66，用于将所述第二RGBW亮度值转换为RGBW灰阶值。
可选的，所述第一转换电路61，用于通过查找RGB灰阶-RGB亮度对应表，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值。
可选的，所述第一转换电路61，通过以下计算公式，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值：
LR＝(R/GL) γ，LG＝(G/GL) γ，LB＝(B/GL) γ；
其中，LR为红色子像素的RGB亮度值，R为红色子像素的RGB灰阶值，LG为绿色子像素的RGB亮度值，G为绿色子像素的RGB灰阶值，LB为蓝色子像素的RGB亮度值，B为蓝色子像素的RGB灰阶值，GL为最大灰阶值，γ是Gamma值。
可选的，所述第二转换电路62，用于通过以下计算公式，将所述RGB亮度值转换为第一RGBW亮度值：
Lw＝min(LR,LG,LB)，Lr＝LR-Lw，Lg＝LG-Lw，Lb＝LB-Lw；
其中，Lw为白色子像素的RGBW亮度值，Lr为红色子像素的RGBW亮度值，Lg为绿色子像素的RGBW亮度值，Lb为蓝色子像素的RGBW亮度 值，LR为红色子像素的RGB亮度值，LG为绿色子像素的RGB亮度值，LB为蓝色子像素的RGB亮度值。
可选的，所述第一确定电路63，用于在所述当前帧画面的亮度水平为当前帧画面各像素的亮度值总和时，采用以下计算公式，确定所述当前帧画面的亮度水平：
Figure PCTCN2021072881-appb-000010
其中，sum为当前帧画面各像素的亮度值总和，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
可选的，所述第一确定电路63，用于在所述当前帧画面的亮度水平为当前帧画面的亮度平均水平时，采用以下计算公式，确定所述当前帧画面的亮度平均水平：
Figure PCTCN2021072881-appb-000011
APL＝sum/(l1*l2)
其中，sum为当前帧画面各像素的亮度值总和，APL为当前帧画面的亮度平均水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
可选的，所述第一确定电路63，用于在所述当前帧画面的亮度水平为亮度相对水平时，采用以下计算公式，确定所述当前帧画面的亮度相对水平：
Figure PCTCN2021072881-appb-000012
K＝sum/sum max
其中，sum为当前帧画面各像素的亮度值总和，K为当前帧画面的亮度相对水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值，sum max为所述显示装置的最大亮度。
可选的，所述第二确定电路64，用于通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，所述第二确定电路64，用于根据所述当前帧画面各像素的亮度值总和，确定当前帧画面的亮度平均水平；及通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，所述第二确定电路64，用于根据当前帧画面的亮度相对水平K、所述显示装置的最大亮度sum max及所述显示装置的最大亮度对应的亮度平均水平APL max，确定当前帧画面的亮度平均水平；及通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
可选的，若所述当前帧画面的亮度平均水平未超过预定值，所述当前帧画面的亮度增益值为1；若所述当前帧画面的亮度平均水平超过所述预定值，所述当前帧画面的亮度增益值随着所述亮度平均水平的增大呈递减趋势。
可选的，所述预定值为显示红色纯色画面、绿色纯色画面或蓝色纯色画面时的亮度平均水平。
可选的，APL max为显示红色纯色画面、绿色纯色画面和蓝色纯色画面任意两种时的亮度平均水平。
可选的，所述计算电路65，用于采用以下计算公式，计算第二RGBW亮度值：
L′r＝gain·Lr，L′g＝gain·Lg，L′b＝gain·Lb，L′w＝Lw+(1-gain)*(Lr+Lg+Lb)/3；
其中，L′r为红色子像素的第二RGBW亮度值，L′g为绿色子像素的第二RGBW亮度值，L′b为蓝色子像素的第二RGBW亮度值，gain为所述亮度增 益值，Lw为白色子像素的第一RGBW亮度值，Lr为红色子像素的第一RGBW亮度值，Lg为绿色子像素的第一RGBW亮度值，Lb为蓝色子像素的第一RGBW亮度值。
本公开实施例还提供一种显示装置，包括上述图像处理电路。
参考图7，根据本公开的实施方式的显示装置可包括显示面板116、选通驱动器118、数据驱动器120、定时控制器124和图像处理电路60。
显示面板116可以包括m条数据线D1～Dm、m条感测线S1～Sm，n条选通线G1～Gn和n条感测控制线SC1～SCn和m×n个像素122。m条数据线D1～Dm、m条感测线S1～Sm逐个彼此相对并且形成m对。类似地，n条选通线G1～Gn和n条感测控制线SC1～SCn逐个彼此相对并且形成n对。像素122可形成在通过将m对数据线D和感测线S与n对选通线G和感测控制线SC交叉限定区域中。
此外，可在显示面板116上形成第一信号线和第二信号线，所述第一信号线用于将第一驱动电压Vdd施加到像素122中的每一个，第二信号线用于将第二驱动电压Vss施加到像素122中的每一个。第一驱动电压Vdd可以在图中未示出的高电位驱动电压源Vdd中生成。第二驱动电压Vss可以在图中未示出的低电位驱动电压Vss中生成。
定时控制器124可以从外部图形控制器(未示出)接收定时信号，如垂直同步信号Vsync、水平同步信号Hsync、点时钟信号DCLK、数据使能信号DE等。另外，定时控制器124可以从接收到的定时信号得出数据控制信号DDC和选通控制信号GDC。数据控制信号DDC用于控制数据驱动器120的操作定时。选通控制信号GDC用于控制选通驱动器118的操作定时。
图像处理电路60可以将来自外部(例如，外部图形控制器)的三个颜色的数字视频数据RGB转换四个颜色的数字视频数据RGBW。此外，图像处理电路60可以调整四个颜色的数字视频数据RGBW的亮度。从图像处理电路60向定时控制器124施加经补偿的数字视频数据RGBW。然后，定时控制器124可以将经补偿的数字视频数据RGBW重新排列成适合于限定显示面板116的格式。从定时控制器124向数据驱动器120施加重新排列的数字视频数据RGBW。
响应于来自定时控制器124的选通控制信号GDC，选通驱动器118可以生成扫描脉冲。可以在显示面板116从选通驱动器118向选通线G1～Gn顺序地施加扫描脉冲。
此外，在定时控制器124的控制下，选通驱动器118可以向显示面板116上的感测控制线SC1～SCn输出感测控制信号SCS。感测控制信号SCS用于控制在像素中的每一个中包括的感测开关(未示出)。
虽然解释了选通驱动器118输出扫描脉冲SP和感测控制信号SCS二者，但是本公开不限于此。另选地，显示装置可以额外地包括感测开关控制驱动器，所述感测开关控制驱动器在定时控制器124的控制下输出感测控制信号SCS。
数据驱动器120可以通过从定时控制器124施加的数据控制信号DDC控制。此外，数据驱动器120可以向感测线S1～Sm施加感测电压。此外，数据驱动器120可以向显示面板116上的数据线D1～Dm施加模拟数据电压。为了向数据线D1～Dm施加模拟数据电压，数据驱动器120可以将四个颜色的数字视频数据RGBW转换成模拟数据电压，所述四个颜色的数字视频数据RGBW由图像处理电路60调整亮度并且经由定时控制器124从图像处理电路60施加。
数据线D1～Dm连接到像素122。这样，可经由数据线D1～Dm向像素122传递数据电压。
感测线S1～Sm连接到像素122。这样感测线S1～Sm不仅可以用来向像素122施加感测电压而且还可以测量传感电压。该传感电压可由通过相应的感测线S将初始化电压充入到像素中和在浮置状态下进入像素来获得。虽然解释了数据驱动器120可输出数据电压和感测电压并检测感测电压，但是本发明并不限于此。另选地，显示装置可以额外包括输出感测电压并检测感测电压的感测驱动器。
同时，图像处理电路60可以被内置在定时控制器124中。另选地，在显示装置中，图像处理电路60与定时控制器124分离设置。此外，描述了图像处理电路60被应用到显示装置，但是本公开并不限于此。换句话说，图像处理电路60可被应用到无线通信设备，如无线手机、数码相机、摄像机、数字 多播放器、个人数字助理PDA、视频游戏控制台、不同类型的视频设备和高级观看站(例如电视接收机)。
图8是本公开实施例中像素的配置的电路图。
在本公开中公开的像素122可以是红色、绿色、蓝色和白色像素中的一种。另外，像素122可以被称为子像素。
子像素122可以包括扫描开关SW、驱动开关DR、感测开关SEW、有机发光二极管OLED和存储电容器Cst。
扫描开关SW可以是用于在数据线Di上传递数据电压的晶体管。扫描开关SW可以通过选通线Gj上的扫描脉冲SP控制并且被连接在数据线Di与第一节点N1之间。
驱动开关DR可以是通过连接在晶体管的栅极和源极的第一节点N1与第二节点N2之间的电压来调整流过有机发光晶体管二极管OLED的电流的晶体管。这样，驱动开关DR可包括连接到第一节点N1的栅极、连接到第二节点N2的源极和连接到第一驱动电压线Vdd的漏极。
感测开关SEW可以是用于初始化第二节点N2并经由感测线Si检测驱动开关DR的阈值电压的晶体管。这样的感测开关SEW可通过感测控制线SCj上的感测控制信号SCS控制并且被连接在第二节点N2与第三节点N3之间。
有机发光二极管OLED包括阳极电极和阴极电极。阳极电极可以连接到第二节点N2并且阴极电极可以连接到第二驱动电压线Vss。
存储电容器Cst可以连接在第一节点N1和和第二节点N2之间。换句话说，存储电容器Cst可以连接在驱动开关DR的栅极与源极之间。
所述显示装置可以为白光OLED显示装置。
请参考图9，本公开实施例还提供一种显示装置90，包括处理器91，存储器92，存储在存储器92上并可在所述处理器91上运行的计算机程序，该计算机程序被处理器91执行时实现上述图像处理方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述图像处理方法实 施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
上述本公开揭示的方法可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本公开中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本公开所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文功能的模块(例如过程、函数等)来实现本文的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的， 本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (18)

  1. 一种图像处理方法，应用于显示装置，所述方法包括：
    将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值；
    将所述RGB亮度值转换为第一RGBW亮度值；
    根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平；
    根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值；
    根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值；
    将所述第二RGBW亮度值转换为RGBW灰阶值。
  2. 如权利要求1所述的图像处理方法，其中，所述将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值包括：
    通过查找RGB灰阶-RGB亮度对应表，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值。
  3. 如权利要求1所述的图像处理方法，其中，所述将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值包括：
    通过以下计算公式，将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值：
    LR＝(R/GL) γ，LG＝(G/GL) γ，LB＝(B/GL) γ；
    其中，LR为红色子像素的RGB亮度值，R为红色子像素的RGB灰阶值，LG为绿色子像素的RGB亮度值，G为绿色子像素的RGB灰阶值，LB为蓝色子像素的RGB亮度值，B为蓝色子像素的RGB灰阶值，GL为最大灰阶值，Υ是Gamma值。
  4. 如权利要求1所述的图像处理方法，其中，所述将所述RGB亮度值转换为第一RGBW亮度值包括：
    通过以下计算公式，将所述RGB亮度值转换为第一RGBW亮度值：
    Lw＝min(LR,LG,LB)，Lr＝LR-Lw，Lg＝LG-Lw，Lb＝LB-Lw；
    其中，Lw为白色子像素的RGBW亮度值，Lr为红色子像素的RGBW亮度值，Lg为绿色子像素的RGBW亮度值，Lb为蓝色子像素的RGBW亮度 值，LR为红色子像素的RGB亮度值，LG为绿色子像素的RGB亮度值，LB为蓝色子像素的RGB亮度值。
  5. 如权利要求1所述的图像处理方法，其中，所述当前帧画面的亮度水平为当前帧画面各像素的亮度值总和，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
    采用以下计算公式，确定所述当前帧画面的亮度水平：
    Figure PCTCN2021072881-appb-100001
    其中，sum为当前帧画面各像素的亮度值总和，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
  6. 如权利要求1所述的图像处理方法，其中，所述当前帧画面的亮度水平为当前帧画面的亮度平均水平，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
    采用以下计算公式，确定所述当前帧画面的亮度平均水平：
    Figure PCTCN2021072881-appb-100002
    APL＝sum/(l1*l2)
    其中，sum为当前帧画面各像素的亮度值总和，APL为当前帧画面的亮度平均水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值。
  7. 如权利要求1所述的图像处理方法，其中，所述当前帧画面的亮度水平为亮度相对水平，所述根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平包括：
    采用以下计算公式，确定所述当前帧画面的亮度相对水平：
    Figure PCTCN2021072881-appb-100003
    K＝sum/sum max
    其中，sum为当前帧画面各像素的亮度值总和，K为当前帧画面的亮度相对水平，l1为所述显示装置的行方向上的像素个数，l2为所述显示装置的列方向上的像素个数，Lr i，j为第i，j个像素中的红色子像素的RGBW亮度值，Lg i，j为第i，j个像素中的绿色子像素的RGBW亮度值，Lb i，j为第i，j个像素中的蓝色子像素的RGBW亮度值，Lw i，j为第i，j个像素中的白色子像素的RGBW亮度值，sum max为所述显示装置的最大亮度。
  8. 如权利要求5所述的图像处理方法，其中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
    根据所述当前帧画面各像素的亮度值总和，确定当前帧画面的亮度平均水平；
    通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
  9. 如权利要求6所述的图像处理方法，其中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
    通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
  10. 如权利要求7所述的图像处理方法，其中，所述根据所述当前帧画面的亮度水平，确定所述当前帧画面的亮度增益值包括：
    根据当前帧画面的亮度相对水平K、所述显示装置的最大亮度sum max及所述显示装置的最大亮度对应的亮度平均水平APL max，确定当前帧画面的亮 度平均水平；及
    通过查找亮度平均水平-亮度增益值对应表，确定所述当前帧画面的亮度增益值。
  11. 如权利要求1、8-10任一项所述的图像处理方法，其中，
    若所述当前帧画面的亮度平均水平未超过预定值，所述当前帧画面的亮度增益值为1；
    若所述当前帧画面的亮度平均水平超过所述预定值，所述当前帧画面的亮度增益值随着所述亮度平均水平的增大呈递减趋势。
  12. 如权利要求11所述的图像处理方法，其中，所述预定值为显示红色纯色画面、绿色纯色画面或蓝色纯色画面时的亮度平均水平。
  13. 如权利要求10所述的图像处理方法，其中，APL max为显示红色纯色画面、绿色纯色画面和蓝色纯色画面任意两种时的亮度平均水平。
  14. 如权利要求1所述的图像处理方法，其中，所述根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值包括：
    采用以下计算公式，计算第二RGBW亮度值：
    L′r＝gain·Lr，L′g＝gain·Lg，L′b＝gain·Lb，L′w＝Lw+(1-gain)*(Lr+Lg+Lb)/3；
    其中，L′r为红色子像素的第二RGBW亮度值，L′g为绿色子像素的第二RGBW亮度值，L′b为蓝色子像素的第二RGBW亮度值，L′w为白色子像素的第二RGBW亮度值，gain为所述亮度增益值，Lw为白色子像素的第一RGBW亮度值，Lr为红色子像素的第一RGBW亮度值，Lg为绿色子像素的第一RGBW亮度值，Lb为蓝色子像素的第一RGBW亮度值。
  15. 一种图像处理电路，包括：
    第一转换电路，用于将当前帧画面的每个像素的RGB灰阶值转换为RGB亮度值；
    第二转换电路，用于将所述RGB亮度值转换为第一RGBW亮度值；
    第一确定电路，用于根据各像素对应的第一RGBW亮度值，确定所述当前帧画面的亮度水平；
    第二确定电路，用于根据所述当前帧画面的亮度水平，确定所述当前帧 画面的亮度增益值；
    计算电路，用于根据所述亮度增益值和所述第一RGBW亮度值，计算第二RGBW亮度值；
    第三转换电路，用于将所述第二RGBW亮度值转换为RGBW灰阶值。
  16. 一种显示装置，包括如权利要求15所述的图像处理模组。
  17. 一种显示装置，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至14中任一项所述的图像处理方法的步骤。
  18. 一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如权利要求1至14中任一项所述的图像处理方法的步骤。
PCT/CN2021/072881 2020-01-22 2021-01-20 图像处理方法、图像处理模组及显示装置 WO2021147904A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/428,178 US11527214B2 (en) 2020-01-22 2021-01-20 Image processing method, image processing circuit and display apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010074912.9A CN111277810A (zh) 2020-01-22 2020-01-22 图像处理方法、图像处理模组及显示装置
CN202010074912.9 2020-01-22

Publications (1)

Publication Number Publication Date
WO2021147904A1 true WO2021147904A1 (zh) 2021-07-29

Family

ID=71001184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/072881 WO2021147904A1 (zh) 2020-01-22 2021-01-20 图像处理方法、图像处理模组及显示装置

Country Status (3)

Country Link
US (1) US11527214B2 (zh)
CN (1) CN111277810A (zh)
WO (1) WO2021147904A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220254307A1 (en) * 2019-07-18 2022-08-11 Lg Electronics Inc. Display device
CN111277810A (zh) * 2020-01-22 2020-06-12 合肥鑫晟光电科技有限公司 图像处理方法、图像处理模组及显示装置
KR20220058157A (ko) * 2020-10-30 2022-05-09 엘지디스플레이 주식회사 사색 부화소를 포함하는 표시장치 및 그 구동방법
KR20230071898A (ko) * 2021-11-16 2023-05-24 삼성디스플레이 주식회사 표시 장치, 및 표시 장치의 구동 방법
CN114783338A (zh) * 2022-04-01 2022-07-22 苏州华星光电技术有限公司 显示器驱动方法、装置、显示装置及计算机可读存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006163068A (ja) * 2004-12-08 2006-06-22 Sanyo Electric Co Ltd 自発光型ディスプレイの信号処理回路
CN104269138A (zh) * 2014-10-24 2015-01-07 京东方科技集团股份有限公司 白光oled显示装置及其显示控制方法、显示控制装置
CN106652937A (zh) * 2016-12-14 2017-05-10 武汉华星光电技术有限公司 一种rgb转rgbw的转换方法
CN106791755A (zh) * 2016-12-27 2017-05-31 武汉华星光电技术有限公司 一种rgbw像素渲染装置及方法
CN109285513A (zh) * 2018-10-30 2019-01-29 惠科股份有限公司 一种显示面板的驱动方法及其驱动装置
CN111277810A (zh) * 2020-01-22 2020-06-12 合肥鑫晟光电科技有限公司 图像处理方法、图像处理模组及显示装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010020241A (ja) 2008-07-14 2010-01-28 Sony Corp 表示装置、表示装置の駆動方法、駆動用集積回路、駆動用集積回路による駆動方法及び信号処理方法
WO2012124003A1 (ja) * 2011-03-16 2012-09-20 パナソニック株式会社 表示装置および表示方法
CN106098009B (zh) * 2016-08-17 2019-01-15 武汉华星光电技术有限公司 一种液晶显示面板的驱动方法及装置
CN107146569B (zh) * 2017-07-14 2019-02-12 武汉华星光电技术有限公司 适用rgbw显示的分区背光显示方法及装置
CN110085174B (zh) * 2019-04-23 2021-04-02 深圳市华星光电半导体显示技术有限公司 降低显示器功耗的方法及装置
CN110634455B (zh) * 2019-09-18 2021-07-09 成都捷翼电子科技有限公司 一种rgb转rgbw的转换方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006163068A (ja) * 2004-12-08 2006-06-22 Sanyo Electric Co Ltd 自発光型ディスプレイの信号処理回路
CN104269138A (zh) * 2014-10-24 2015-01-07 京东方科技集团股份有限公司 白光oled显示装置及其显示控制方法、显示控制装置
CN106652937A (zh) * 2016-12-14 2017-05-10 武汉华星光电技术有限公司 一种rgb转rgbw的转换方法
CN106791755A (zh) * 2016-12-27 2017-05-31 武汉华星光电技术有限公司 一种rgbw像素渲染装置及方法
CN109285513A (zh) * 2018-10-30 2019-01-29 惠科股份有限公司 一种显示面板的驱动方法及其驱动装置
CN111277810A (zh) * 2020-01-22 2020-06-12 合肥鑫晟光电科技有限公司 图像处理方法、图像处理模组及显示装置

Also Published As

Publication number Publication date
CN111277810A (zh) 2020-06-12
US20220122556A1 (en) 2022-04-21
US11527214B2 (en) 2022-12-13

Similar Documents

Publication Publication Date Title
WO2021147904A1 (zh) 图像处理方法、图像处理模组及显示装置
US10553146B2 (en) Display device and method of driving the same
KR102194571B1 (ko) 데이터 변환부와 데이터 변환부의 데이터 변환 방법
US9412304B2 (en) Display device and method for driving the same
US9418591B2 (en) Timing controller, driving method thereof, and display device using the same
KR102207190B1 (ko) 영상 처리 방법 및 영상 처리 회로와, 그를 이용한 표시 장치
KR101542044B1 (ko) 유기 발광 표시 장치 및 그의 구동 방법
US10529275B2 (en) Method and device for luminance adjustment, display device, and computer-readable storage medium
KR101609255B1 (ko) 명도 조절 방법 및 명도 조절 신호 처리 장치와 이를 적용한 영상 표시 시스템
KR102041968B1 (ko) 타이밍 컨트롤러 및 그 구동 방법과 이를 이용한 표시장치
US9305521B2 (en) Method of reducing power consumption in a display device and a display device using the same
WO2019061849A1 (zh) 显示面板的亮度调节方法及亮度调节装置
CN113593474B (zh) 伽马调试方法、显示驱动芯片以及显示装置
KR20160019588A (ko) 표시 장치 및 표시 방법
KR102239895B1 (ko) 입력 영상의 업 스케일링을 위한 데이터 변환부와 데이터 변환 방법
CN113971931B (zh) 显示装置和包括该显示装置的车辆显示装置
JP2014211536A (ja) 表示装置および表示方法
KR102413473B1 (ko) 표시 장치의 구동 방법
KR101906418B1 (ko) 유기전계발광표시장치와 이의 구동방법
KR20140076363A (ko) 휘도조절방법, 휘도조절장치, 및 이를 포함하는 유기 발광 디스플레이 장치
KR101922072B1 (ko) 데이터 변환 장치 및 방법, 평판 표시 장치의 구동 장치 및 구동 방법
KR102185118B1 (ko) 유기발광표시장치 및 이의 동작방법
KR102364081B1 (ko) 데이터 변환장치와 이를 포함하는 표시장치
JP7386035B2 (ja) 電流制限回路、表示装置、及び電流制限方法
KR101936679B1 (ko) 유기발광표시장치 및 그 구동방법

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: 21744018

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: 21744018

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 21744018

Country of ref document: EP

Kind code of ref document: A1