WO2023103405A1 - 补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置 - Google Patents

补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置 Download PDF

Info

Publication number
WO2023103405A1
WO2023103405A1 PCT/CN2022/108307 CN2022108307W WO2023103405A1 WO 2023103405 A1 WO2023103405 A1 WO 2023103405A1 CN 2022108307 W CN2022108307 W CN 2022108307W WO 2023103405 A1 WO2023103405 A1 WO 2023103405A1
Authority
WO
WIPO (PCT)
Prior art keywords
target
compensation
brightness
mura
grayscale
Prior art date
Application number
PCT/CN2022/108307
Other languages
English (en)
French (fr)
Inventor
陈�峰
Original Assignee
昆山国显光电有限公司
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 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Priority to KR1020237029667A priority Critical patent/KR20230133388A/ko
Publication of WO2023103405A1 publication Critical patent/WO2023103405A1/zh
Priority to US18/468,938 priority patent/US12106727B2/en

Links

Images

Classifications

    • 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
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • 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
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems
    • 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 present application belongs to the field of display technology, and in particular relates to a method for configuring a compensation lookup table, a compensation method for a display panel, and a device for configuring a compensation lookup table.
  • the Mura phenomenon refers to the phenomenon that the brightness displayed on the display panel is uneven, causing various traces. Due to production processes, production materials, and other reasons, the Mura level of display panels may be different, and the Mura level may reflect the severity of the Mura phenomenon of the display panel. The severity of the mura phenomenon between the display panels is different, so that the mura compensation algorithm cannot meet the compensation requirements of the display panels with different mura levels.
  • Embodiments of the present application provide a compensation lookup table configuration method, a display panel compensation method, and a compensation lookup table configuration device, which can meet compensation requirements of display panels with different Mura levels.
  • the embodiment of the present application provides a method for configuring a compensation lookup table, including: acquiring the first grayscale data and the second grayscale data of the target display panel, the first grayscale data including the pixel points of the target display panel at The display grayscale value of the target grayscale under the first brightness, the second grayscale data includes the display grayscale value of the target grayscale of each pixel of the target display panel under the second brightness, and the second brightness is different from the first brightness; According to at least one of the first grayscale data and the second grayscale data, and the adjustable threshold range, determine the Mura pixel in the target display panel, and the displayed grayscale value of the Mura pixel exceeds the adjustable threshold range; based on the Mura The first grayscale data corresponding to the pixel and the second grayscale data corresponding to the Mura pixel are calculated to obtain the target compensation gain coefficient, and the target compensation gain coefficient is the compensation of the display of the target display panel under the second brightness relative to the first brightness Gain coefficient; in the preset multiple compensation look-up tables corresponding
  • an embodiment of the present application provides a method for mura compensation of a display panel, the method comprising: obtaining the current brightness of the display panel; according to the current brightness, searching for a compensation gain coefficient corresponding to the current brightness in a target compensation lookup table, the target The compensation lookup table is set with the corresponding relationship between brightness and compensation gain coefficient.
  • the target compensation lookup table is a compensation lookup table that matches the target compensation gain coefficient among multiple compensation lookup tables corresponding to multiple Mura levels.
  • the target compensation gain coefficient is based on the display panel
  • the first grayscale data and the second grayscale data of the Mura pixel in the middle are determined, and the Mura pixel is determined according to at least one of the first grayscale data, the second grayscale data, and an adjustable threshold range, and the first grayscale data It includes the display grayscale value of the target grayscale of each pixel of the display panel under the first brightness, and the second grayscale data includes the display grayscale value of the target grayscale of each pixel of the display panel under the second brightness;
  • the compensation gain coefficient corresponding to the current brightness is used to compensate the display panel, and the second brightness is different from the first brightness.
  • the embodiment of the present application provides a device for configuring a compensation lookup table, including: a data acquisition module, configured to acquire the first grayscale data and the second grayscale data of the target display panel, the first grayscale data includes the target The display grayscale value of the target grayscale of each pixel of the display panel under the first brightness, the second grayscale data includes the display grayscale value of the target grayscale of each pixel of the target display panel under the second brightness, the second brightness Different from the first brightness; the pixel determination module is configured to determine the Mura pixel in the target display panel according to at least one of the first grayscale data and the second grayscale data, and the adjustable threshold range, and the Mura pixel The displayed grayscale value exceeds the adjustable threshold range; the calculation module is set to calculate the target compensation gain coefficient based on the first grayscale data corresponding to the Mura pixel point and the second grayscale data corresponding to the Mura pixel point, and the target compensation gain coefficient For the display of the target display panel under the second brightness relative to the compensation gain coefficient of the
  • An embodiment of the present application provides a method for configuring a compensation lookup table, a compensation method for a display panel, and a device for configuring a compensation lookup table.
  • FIG. 1 is a schematic diagram of an embodiment of a method for configuring a compensation lookup table provided by the present application
  • FIG. 2 is a schematic diagram of an example of a shooting target display panel provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of an image of a target display panel displaying a target grayscale at a first brightness obtained by shooting according to an embodiment of the present application;
  • Fig. 4 is a display gray scale compensation diagram corresponding to the image shown in Fig. 3;
  • FIG. 5 is a schematic diagram of an image of a target display panel displaying a target grayscale under a second luminance obtained by shooting according to an embodiment of the present application;
  • Fig. 6 is a display gray scale compensation diagram corresponding to the image shown in Fig. 5;
  • FIG. 7 is a schematic diagram showing an example of the region where the Mura phenomenon appears in the grayscale compensation image shown in FIG. 6;
  • Fig. 8 is a schematic diagram of an example of the corresponding relationship between brightness and compensation gain coefficient in the compensation look-up table LUT corresponding to different Mura levels provided by the embodiment of the present application;
  • FIG. 9 is a schematic diagram of another example of the corresponding relationship between brightness and compensation gain coefficient in the compensation lookup table LUT corresponding to different Mura levels provided by the embodiment of the present application;
  • Fig. 10 is a flow chart of another embodiment of the configuration method of the compensation lookup table provided by the present application.
  • Fig. 11 is a flowchart of another embodiment of the configuration method of the compensation lookup table provided by the present application.
  • Fig. 12 is a flowchart of an embodiment of the Mura compensation method provided by the present application.
  • FIG. 13 is a schematic structural diagram of an embodiment of a device for configuring a compensation lookup table provided by the present application
  • FIG. 14 is a schematic structural diagram of another embodiment of the device for configuring the compensation lookup table provided by the present application.
  • FIG. 15 is a schematic structural diagram of another embodiment of the device for configuring the compensation lookup table provided by the present application.
  • FIG. 16 is a schematic structural diagram of an embodiment of a device for configuring a compensation lookup table provided in the present application.
  • the Mura phenomenon refers to the phenomenon that the brightness displayed on the display panel is uneven, causing various traces. Due to reasons such as production processes and production materials, the degree of verification of the mura phenomenon may be different between display panels, that is, the levels of mura among display panels may be different.
  • the Mura compensation algorithm in the related art cannot meet the compensation requirements of display panels with different Mura levels, even making the compensation effect of some display panels poor.
  • the embodiment of the present application provides a compensation lookup table configuration method, a display panel compensation method, and a compensation lookup table configuration device, which can use corresponding compensation lookup table LUTs for display panels of different Mura levels, and the compensation lookup table LUT is used to look up Compensation gain coefficient corresponding to each brightness. Compensating the display panel by using the compensation lookup table LUT corresponding to the mura level of the display panel can meet the compensation requirements of the display panels with different mura levels and improve the compensation effect of the multi-display panel.
  • the configuration method of the compensation lookup table, the compensation method of the display panel, the configuration device, equipment and storage medium of the compensation lookup table will be described in sequence below.
  • the first aspect of the present application provides a method for configuring a compensation lookup table, which can be applied to a device or device for configuring a compensation lookup table, that is, the method for configuring a compensation lookup table can be executed by a device or device for configuring a compensation lookup table, and it is not described here limited.
  • FIG. 1 is a schematic diagram of an embodiment of a method for configuring a compensation lookup table provided by the present application. As shown in FIG. 1 , the method for configuring the compensation lookup table may include steps S101 to S104.
  • step S101 first grayscale data and second grayscale data of a target display panel are acquired.
  • the first grayscale data includes the display grayscale value of the target grayscale of each pixel of the target display panel under the first brightness.
  • the second grayscale data includes display grayscale values of the target grayscale of each pixel of the target display panel under the second brightness.
  • the target grayscale indicates a specific grayscale of the image displayed on the target display panel, and any grayscale can be selected, which is not limited here.
  • the target grayscale may be grayscale 16, grayscale 32, grayscale 64, grayscale 128, grayscale 192, grayscale 224, etc., or other grayscales. Due to the Mura phenomenon in the display panel, the grayscale value actually displayed by some pixels in the display panel is different from the target grayscale value.
  • the displayed grayscale value is the grayscale value actually displayed by the pixel. Pixels in the target display panel may include sub-pixels in the target display panel.
  • the first grayscale data can be stored in matrix form
  • the second grayscale data can also be stored in matrix form.
  • Each element in the matrix corresponding to the first grayscale data is the display grayscale value of the target grayscale of the pixel at the corresponding position of the element under the first brightness.
  • Each element in the matrix corresponding to the second grayscale data is the display grayscale value of the target grayscale of the pixel at the corresponding position of the element under the second brightness.
  • the positions of the elements in the matrix correspond to the positions of the pixels in the target display panel.
  • the second brightness is different from the first brightness.
  • the compensation gain coefficient for the display panel to be compensated under the second brightness relative to the first brightness can be obtained.
  • the first brightness may be greater than the second brightness. In other examples, the first brightness may be less than the second brightness.
  • the first brightness value of the pixel points of the target display panel may be collected.
  • the first brightness values of the pixels of the target display panel are converted into first grayscale data.
  • the second brightness value of the pixel point of the target display panel is collected.
  • the second brightness values of the pixels of the target display panel are converted into second grayscale data.
  • the target display panel can be controlled to display the image of the target grayscale of the first brightness, and the image displayed on the target display panel is captured by an optical acquisition device such as a charge coupled device (CCD) camera, thereby collecting the first pixel point of the target display panel.
  • CCD charge coupled device
  • the first luminance value is the luminance value of the pixel when the target display panel displays an image of the target grayscale of the first luminance, and the first luminance value can be realized in the form of comma separated value (Comma Separated Value, CSV) data, here Not limited.
  • CSV Common Separated Value
  • the target display panel can be controlled to display an image of the target gray scale of the second brightness, and the image displayed on the target display panel can be captured by an optical acquisition device such as a CCD camera, so as to collect the second brightness value of the pixel point of the target display panel.
  • the second luminance value is the luminance value of a pixel when the target display panel displays an image of the target grayscale of the second luminance, and the second luminance value may be implemented in the form of CSV data, which is not limited here.
  • the image of the target grayscale displayed by the above display panel may be a monochrome image, for example, the monochrome image may be a green image, a blue image, or a red image, etc., which is not limited herein.
  • the first brightness value and the second brightness value are respectively converted into first grayscale data and second grayscale data through a conversion algorithm of brightness and grayscale. The conversion algorithm is not limited here.
  • FIG. 2 is a schematic diagram of an example of a shooting target display panel provided in an embodiment of the present application.
  • the target display panel 22 can be photographed by the CCD camera 21 to capture an image of the target display panel displaying the target grayscale of the first brightness and an image of the target display panel displaying the target grayscale of the second brightness, and Get the first brightness value and the second brightness value.
  • the CCD camera 21 may store the first brightness value and the second brightness value in the memory 23 .
  • the compensation lookup table configuration device 24 can acquire the first brightness value and the second brightness value from the memory 23, and execute the configuration method of the compensation lookup table in the embodiment of the present application.
  • the memory 23 can be an independent device from the compensation look-up table, or can be integrated in the configuration device 24 of the compensation look-up table, which is not limited here.
  • FIG. 3 is a schematic diagram of an image of a target display panel displaying a target grayscale under a first brightness condition and obtained by shooting according to an embodiment of the present application.
  • FIG. 4 is a display gray scale compensation diagram corresponding to the image shown in FIG. 3 .
  • the display grayscale value of each pixel in FIG. 4 can be obtained by converting the first brightness value of each pixel in FIG. 3 using a conversion algorithm, for example, the conversion algorithm includes a compensation algorithm.
  • FIG. 5 is a schematic diagram of an image of a target display panel displaying a target gray scale under a second brightness condition and obtained by shooting according to an embodiment of the present application.
  • FIG. 6 is a display gray scale compensation diagram corresponding to the image shown in FIG. 5 .
  • the displayed grayscale value of each pixel in FIG. 6 can be obtained by converting the second brightness value of each pixel in FIG. 5 using a conversion algorithm, for example, the conversion algorithm includes a compensation algorithm. In some examples, it is sufficient to convert the first brightness value and the second brightness value into first grayscale data and second grayscale data respectively by using a conversion algorithm, and a corresponding display grayscale compensation map may not be generated.
  • step S102 according to at least one of the first grayscale data and the second grayscale data, and an adjustable threshold range, the Mura pixel points in the target display panel are determined.
  • the Mura pixels include pixels where the Mura phenomenon occurs in the target display panel, and the area formed by the Mura pixels is the area where the Mura phenomenon occurs in the target display panel.
  • the Mura pixels may include the pixels with the most serious Mura phenomenon in the target display panel, and the area formed by the Mura pixels is the most serious Mura phenomenon area in the target display panel.
  • the adjustable threshold range is adjustable during the process of determining the Mura pixels in the target display panel, that is, the adjustable threshold range is variable.
  • the center of the adjustable threshold range may be the target gray scale.
  • the adjustable threshold range can be centered on the target gray scale, occupying 1 to 5 gray scale values in the positive and negative directions respectively, which is not limited here, wherein the positive direction is greater than the target gray scale
  • the negative direction is the direction smaller than the target grayscale, that is, the adjustable threshold range can be from a grayscale value less than the target grayscale 1 to 5 to a value range greater than the target grayscale 1 to 5 grayscale value.
  • the adjustable threshold range is used to screen the Mura pixels among the pixels of the target display panel, and the adjustable threshold range can be gradually expanded before the Mura pixels are screened. If the displayed grayscale value of the Mura pixel exceeds the adjustable threshold range, the pixel whose displayed grayscale value exceeds the adjustable threshold range can be determined as the Mura pixel.
  • the Mura pixels in the target display panel can be determined according to the first grayscale data and the adjustable threshold range. Specifically, pixels whose display grayscale value of the target grayscale under the first brightness exceeds the finally determined adjustable threshold range may be determined as Mura pixels.
  • the Mura pixel points in the target display panel may be determined according to the second grayscale data and the adjustable threshold range. Specifically, pixels whose display grayscale value of the target grayscale under the second brightness exceeds the finally determined adjustable threshold range may be determined as Mura pixel points.
  • FIG. 7 is a schematic diagram showing an example of the region where the Mura phenomenon appears in the grayscale compensation map shown in FIG. 6 .
  • the area framed by the box 25 is the area where the Mura phenomenon occurs, and the pixels in the box 25 include Mura pixels. In some cases, the area enclosed by box 25 may be the area where the mura phenomenon is most severe.
  • the Mura pixel points in the target display panel may be determined according to the first grayscale data, the second grayscale data and the adjustable threshold range. Specifically, the display grayscale value of the target grayscale under the first brightness exceeds the finally determined adjustable threshold range and the displayed grayscale value of the target grayscale under the second brightness exceeds the finally determined adjustable threshold. The intersection of the pixel points of the range is determined as the Mura pixel point.
  • the second brightness is smaller than the first brightness
  • the Mura pixel point can be determined according to the second grayscale data and the adjustable threshold range, or determined according to the first grayscale data, the second grayscale data and the adjustable threshold range Mura pixels. Since the Mura phenomenon is more obvious when the display panel displays relatively low brightness, the Mura pixel points determined based on the data including the second grayscale data and the adjustable threshold range will be more accurate, thereby improving the compensation corresponding to the target display panel The accuracy of the lookup table.
  • the number of candidate Mura pixel points can be counted according to at least one of the first grayscale data and the second grayscale data, and the candidate Mura pixel points include the first grayscale data or the second grayscale data exceeds the limit.
  • Adjust the pixels in the threshold range when the ratio of the number of candidate Mura pixels to the number of pixels of the target display panel is less than the preset screening ratio threshold, the candidate Mura pixels are determined to be Mura pixels; When the ratio of the number of Mura pixels to the number of pixels of the target display panel is greater than or equal to the preset screening ratio threshold, the adjustable threshold range is expanded according to the preset step size, and the corresponding expanded adjustable threshold range is counted.
  • the candidate mura pixel points corresponding to the adjustable threshold range are determined as mura pixel points.
  • the number of candidate Mura pixels can be reduced by expanding the adjustable threshold range.
  • the adjustable threshold range can be gradually expanded according to a preset step size, which can be set according to scenarios, requirements, experience, etc., and is not limited here.
  • the preset screening ratio threshold can be used to limit the degree to which the number of candidate Mura pixels needs to be reduced.
  • the preset screening ratio threshold can be set according to the scene, demand, experience, etc., and is not limited here.
  • Mura pixel points are determined according to the second grayscale data and the adjustable threshold range.
  • the target grayscale is 128 grayscale
  • the adjustable threshold range can be set to (127,129), that is, the adjustable threshold range is greater than 127 grayscale and less than 129 grayscale; the default step size is 1 grayscale;
  • the ratio threshold may be 10%, 8%, 5%, 1%, 0.5%, 0.4%, 0.3%, 0.2%, or 0.1%. Taking the preset screening ratio threshold as 1% as an example, the pixel points whose second grayscale data exceed the adjustable threshold range (127, 129) are determined as candidate Mura pixel points.
  • the candidate Mura pixels may be directly used as Mura pixels. If the ratio of the number of candidate Mura pixels to the number of pixels of the target display panel is greater than or equal to 1%, the adjustable threshold range is expanded to (126,130), and the second grayscale data exceeds the adjustable threshold range (126,130 ) pixel points are determined as candidate Mura pixel points. If the number of candidate Mura pixels screened out by the adjustable threshold range (126,130) accounts for less than 1% of the number of pixels on the target display panel, the candidate Mura pixels screened out by the adjustable threshold range (126,130) Determined as Mura pixels.
  • the adjustable threshold range needs to be expanded again to expand the adjustable threshold range It is (125,131), and so on, until the number of candidate Mura pixels screened out by a certain expanded adjustable threshold range accounts for less than 1% of the number of pixels in the target display panel, and will use a certain expansion
  • the candidate Mura pixel points screened out by the adjustable threshold range are determined as Mura pixel points.
  • the first grayscale data and the second grayscale data are stored in the form of a matrix, and the coordinates of the displayed grayscale values of the Mura pixels in the matrix can be stored and recorded in a two-dimensional array, which is not limited here .
  • step S103 based on the first grayscale data corresponding to the Mura pixels and the second grayscale data corresponding to the Mura pixels, a target compensation gain coefficient is calculated.
  • the target compensation gain coefficient is the compensation gain coefficient of the display of the target display panel under the second brightness relative to the first brightness.
  • the target compensation gain coefficient is the corresponding compensation gain coefficient when the target display panel displays the second brightness.
  • the ratio of the compensation data when the target display panel displays an image with the target grayscale of the second brightness to the compensation data when the target display panel displays an image with the first brightness is equal to the target compensation gain coefficient.
  • the same processing can be performed on the first grayscale data and the second grayscale data respectively, according to the first result data obtained by processing the first grayscale data and the second result data obtained by processing the second grayscale data , the target compensation gain coefficient can be calculated.
  • the ratio of the first result data to the second result data may be determined as the target compensation gain coefficient, or the ratio of the second result data to the first result data may be determined as the target compensation gain coefficient.
  • a target compensation look-up table is determined among a plurality of preset compensation look-up tables corresponding to a plurality of mura levels.
  • the compensation lookup table is provided with a corresponding relationship between brightness and compensation gain coefficient.
  • the compensation lookup table is shown in Table 1 below:
  • the 51 register value represents the brightness.
  • Table 1 shows the compensation gain coefficients of a display panel under a certain Mura level under various luminances.
  • a plurality of compensation look-up tables LUT corresponding to a plurality of Mura levels may be pre-stored in the device or device for configuring the compensation look-up table.
  • the corresponding relationship between the brightness and the compensation gain coefficient in the compensation look-up table LUT corresponding to different Mura levels may be different.
  • FIG. 8 is a schematic diagram of an example of a corresponding relationship between brightness and compensation gain coefficients in the compensation look-up table LUT corresponding to different Mura levels provided by the embodiment of the present application.
  • FIG. 9 is a schematic diagram of another example of the corresponding relationship between brightness and compensation gain coefficient in the compensation look-up table LUT corresponding to different Mura levels provided by the embodiment of the present application.
  • DBV Display Brightness Value
  • the coordinates represent the brightness, where the brightness is represented by DBV, and a, b and c are constant coefficients.
  • the mura grades may include mild grades, moderate grades, and severe grades.
  • the relationship curves of brightness and compensation gain coefficients corresponding to the mild level, the medium level and the severe level are all different. Therefore, when the display panels with different Mura levels perform compensation, the compensation look-up table LUT corresponding to their own Mura levels can be used to obtain accurate compensation and improve the display effect of the display panel.
  • the essence of the compensation lookup table LUT is the corresponding relationship between brightness and compensation gain coefficient, which is related to the Mura level.
  • Each Mura level corresponds to a corresponding relationship between brightness and compensation gain coefficient, that is, the compensation lookup table LUT.
  • Multiple compensation lookup tables corresponding to multiple mura levels may be embodied as multiple tables, that is, each compensation lookup table is stored as a table.
  • Multiple compensation lookup table LUTs corresponding to multiple Mura levels can also be implemented as a table, and each compensation lookup table LUT can be implemented as a row of cells or a column of cells in this table, so that a table Can accommodate multiple compensation look-up table LUTs corresponding to multiple Mura levels.
  • the Mura level can be represented by the Just Noticeable Difference (JND).
  • JND Just Noticeable Difference
  • multiple compensation look-up table LUTs corresponding to multiple mura levels implemented as one table may be as shown in Table 2 below:
  • the 51 register value represents the brightness.
  • Table 2 shows the compensation gain coefficients of the display panels corresponding to five Mura levels, ie, five different JNDs, at each brightness. It can be seen from Table 2 that under the same brightness, the compensation gain coefficients of the display panels corresponding to different Mura levels may be different.
  • the target compensation lookup table matches the target compensation gain coefficient, and is used to be called to compensate the target display panel. That is to say, the target compensation lookup table is a lookup table matched with the target compensation gain coefficient. For example, under the same brightness, the compensation gain coefficient in the target compensation lookup table is closest to the target compensation gain coefficient.
  • At least one of the first grayscale data and the second grayscale data and the adjustable threshold value range are used to determine the Mura pixel point where the Mura phenomenon occurs in the target display panel, based on the Mura pixel point corresponding to the first One gray-scale data and the second gray-scale data, obtain the target compensation gain coefficient of the display panel of the target display panel under the second brightness relative to the first brightness, so as to be preset in a plurality of compensation look-up tables corresponding to a plurality of Mura levels , determine a target compensation lookup table matching the target compensation gain coefficient.
  • the target compensation lookup table is used to be called to compensate the target display panel.
  • the compensation lookup tables corresponding to the Mura levels of different display panels can be determined, and the corresponding compensation lookup tables can be used to compensate the corresponding display panels, so as to meet the compensation requirements of display panels with different Mura levels.
  • the compensation compatibility of display panels with different Mura levels has been improved, and the compensation effect in the multi-display panel scene has also been improved.
  • the first brightness is a standard brightness, that is, Normal brightness
  • the second brightness is one-third of the standard brightness.
  • the first brightness may be 300 nits
  • the second brightness may be 100 nits.
  • Users often use the display device including the display panel indoors. Since the indoor light is darker than outdoors, the brightness of the display panel will be lower in order to adapt to the environment, and the Mura phenomenon occurs when the brightness of the display panel is lower. More obviously, in order to ensure more accurate compensation under lower brightness of the display panel, the first brightness can be selected as Normal brightness, and the second brightness is one-third of the first brightness, that is, 1/3Normal brightness.
  • the target compensation gain coefficient in the embodiment of the present application includes the compensation gain coefficient of the target display panel displayed at 1/3Normal brightness relative to the Normal brightness, which can make the target compensation lookup table determined according to the target compensation gain coefficient more suitable for the target display panel, Compensation for target display panels is more accurate.
  • the first brightness is a standard brightness
  • the second brightness is a quarter of the standard brightness
  • the first brightness may be a standard brightness
  • the second brightness may be one eighth to one third of the standard brightness
  • the first brightness may be greater than half of the highest brightness of the target display panel, and the second brightness may be less than half of the highest brightness.
  • Fig. 10 is a flow chart of another embodiment of the method for configuring the compensation lookup table provided by the present application.
  • the difference between Fig. 10 and Fig. 1 is that step 103 in Fig. 1 can be specifically refined into steps S1031 to S1034 in Fig. 10, and step S104 in Fig. 1 can be specifically refined into steps S1041 and Step S1042.
  • step S1031 based on the first grayscale data corresponding to the Mura pixel, a compensation algorithm is used to calculate a first compensated grayscale value.
  • the first compensated grayscale value includes the compensated grayscale value of the Mura pixel under the first brightness. In some examples, it may be based on the display grayscale value and the target grayscale of the target grayscale of the Mura pixel points at the first brightness, or, according to the display grayscale value and the target grayscale value of the Mura pixel points at the first brightness Corresponding to the expected gray scale value, the compensation algorithm is used to obtain the compensated gray scale value of the Mura pixel point under the first brightness.
  • the category and manner of the compensation algorithm are not limited here.
  • the first compensated gray scale value can be stored in an array, which is not limited here.
  • step S1032 based on the second grayscale data corresponding to the Mura pixel, a compensation algorithm is used to calculate a second compensated grayscale value.
  • the second compensated grayscale value includes the compensated grayscale value of the Mura pixel point under the second brightness. In some examples, it may be based on the displayed grayscale value and the target grayscale of the target grayscale of the Mura pixel points under the second brightness, or, according to the displayed grayscale value and the target grayscale value of the Mura pixel point under the second brightness. Corresponding to the expected gray scale value, the compensation algorithm is used to obtain the compensated gray scale value of the Mura pixel point under the second brightness.
  • the compensation method in step S1032 is consistent with the compensation method in step S1031.
  • the second compensated gray scale value can be stored in an array, which is not limited here.
  • Step S1031 and step S1032 may be executed sequentially or simultaneously, and the execution order of step S1031 and step S1032 is not limited here.
  • step S1033 according to the second compensated gray scale value and the first compensated gray scale value, the gain of the Mura pixel point under the second brightness relative to the compensated gray scale value under the first brightness is calculated.
  • the gain of the Mura pixel at the second luminance relative to the compensation gray scale value at the first luminance can represent the compensation gain coefficient of the target display panel at the second luminance relative to the first luminance.
  • the second compensated grayscale value and the first compensated grayscale value can be processed separately, and the ratio of the data obtained by processing the second compensated grayscale value to the data obtained by processing the first compensated grayscale value is used as the Mura pixel point in the second The gain at brightness relative to the compensated grayscale value at the first brightness.
  • the target compensation gain coefficient and the first compensation gray scale value and the second compensation gray scale value satisfy the following relationship:
  • Gain' is the target compensation gain coefficient
  • Z1[i] is the first compensation gray scale value corresponding to the i-th Mura pixel, that is, Z1[i] is the compensation gray value of the i-th Mura pixel under the first brightness Level value
  • Z2[i] is the second compensated gray scale value corresponding to the i-th Mura pixel, that is, Z2[i] is the compensated gray-scale value of the i-th Mura pixel under the second brightness
  • N is the Mura pixel
  • the total number of points, i is an integer, and 1 ⁇ i ⁇ N.
  • step S1034 the gain of the Mura pixel point under the second brightness relative to the compensation grayscale value under the first brightness is determined as the target compensation gain coefficient.
  • step S1041 the compensation gain coefficient corresponding to the second brightness closest to the target compensation gain coefficient under the second brightness is searched in a plurality of compensation look-up tables.
  • step S1042 the compensation lookup table including the compensation gain coefficient corresponding to the second luminance closest to the target compensation gain coefficient is determined as the target compensation lookup table.
  • the compensation lookup table where the compensation gain parameters equal to the target compensation gain coefficients under the second brightness are located The LUT is defined as a target compensation lookup table.
  • the compensation lookup table LUT where the compensation gain parameter with the smallest absolute value of the difference between the second brightness and the target compensation gain coefficient is determined as the target compensation lookup table.
  • Fig. 11 is a flow chart of another embodiment of the method for configuring the compensation lookup table provided by the present application. The difference between FIG. 11 and FIG. 1 is that the method for configuring the compensation lookup table shown in FIG. 11 may further include step S105 and step S106.
  • step S105 a plurality of display panels with a plurality of Mura levels are obtained, and compensation tests are performed on the plurality of display panels respectively, to obtain compensation lookup tables of the plurality of display panels.
  • a small number of display panels can be obtained in advance, and the Mura level of the display panel can be determined by testing the display panel. Compensation tests are performed on the plurality of display panels respectively to obtain the corresponding relationship between the respective luminances of the plurality of display panels and the compensation gain coefficients, thereby obtaining the respective compensation look-up tables LUTs of the plurality of display panels.
  • step S106 according to the corresponding relationship between the display panel and the Mura level, the corresponding relationship between the Mura level and the compensation look-up table is established.
  • the display panel has a corresponding compensation look-up table LUT, and the display panel also has a corresponding relationship with the Mura level.
  • the compensation lookup table LUT corresponding to the display panel, and the corresponding relationship between the display panel and the Mura level, the corresponding relationship between the Mura level and the compensation lookup table can be established, so that multiple compensation lookups corresponding to multiple Mura levels can be obtained in advance in step S104 surface.
  • the target compensation look-up table may be burned into the target display panel. After the target display panel leaves the factory, the target compensation lookup table burned into the target display panel can be directly used to compensate the display of the target display panel during the user's use, so as to improve the display effect of the target display panel.
  • FIG. 12 is a flow chart of an embodiment of the Mura compensation method provided by the present application. As shown in FIG. 12 , the mura compensation method may include steps S301 to S303.
  • step S301 the current brightness of the display panel is acquired.
  • step S302 according to the current brightness, the compensation gain coefficient corresponding to the current brightness is looked up in the target compensation lookup table.
  • the target compensation lookup table is provided with a corresponding relationship between brightness and compensation gain coefficient.
  • the target compensation lookup table is a compensation lookup table that matches the target compensation gain coefficient among multiple compensation lookup tables corresponding to multiple mura levels, that is, the target compensation lookup table is a compensation lookup table that matches the mura level of the display panel.
  • the target compensation gain coefficient is determined based on the first grayscale data and the second grayscale data of the Mura pixels in the display panel.
  • the Mura pixel points are determined according to at least one item of the first grayscale data, the second grayscale data, and an adjustable threshold range.
  • the first grayscale data includes display grayscale values of target grayscales of each pixel of the display panel under a brightness.
  • the second grayscale data includes the display grayscale value of the target grayscale of each pixel of the display panel under another brightness.
  • step S303 the display panel is compensated by using the found compensation gain coefficient corresponding to the current brightness.
  • the target compensation lookup table corresponding to the display panel is a compensation lookup table corresponding to the Mura level of the display panel.
  • the compensation lookup table is provided with a corresponding relationship between brightness and compensation gain coefficient.
  • the target compensation lookup table corresponding to the display panel can be used to determine the compensation gain coefficient corresponding to the current brightness in the target compensation lookup table, and the display panel can be compensated by using the compensation gain coefficient corresponding to the current brightness in the target compensation lookup table. Since the target compensation lookup table matches the Mura level of the display panel, the compensation requirement of the display panel can be met, and the compensation effect of the display panel is improved.
  • FIG. 13 is a schematic structural diagram of an embodiment of a device for configuring a compensation lookup table provided by the present application.
  • the device 400 for configuring the compensation lookup table may include a data acquisition module 401 , a pixel determination module 402 , a calculation module 403 and a determination module 404 .
  • the data acquiring module 401 can be used to acquire the first grayscale data and the second grayscale data of the target display panel.
  • the first grayscale data includes the display grayscale value of the target grayscale of each pixel of the target display panel under the first brightness.
  • the second grayscale data includes display grayscale values of the target grayscale of each pixel of the target display panel under the second brightness. The second brightness is different from the first brightness.
  • the first brightness is a standard brightness
  • the second brightness is one third of the standard brightness
  • the first brightness is a standard brightness
  • the second brightness is a quarter of the standard brightness
  • the first brightness is greater than the second brightness, and the second brightness is one eighth to one third of the standard brightness.
  • the first brightness is greater than one-half of the maximum brightness of the target display panel, and the second brightness is less than one-half of the maximum brightness.
  • the first brightness and the second brightness are not limited to the above description.
  • the pixel point determination module 402 can be configured to determine the Mura pixel points in the target display panel according to at least one of the first grayscale data and the second grayscale data, and an adjustable threshold range.
  • the displayed grayscale value of the Mura pixel exceeds the adjustable threshold range.
  • the calculation module 403 may be configured to calculate and obtain a target compensation gain coefficient based on the first grayscale data corresponding to the Mura pixel points and the second grayscale data corresponding to the Mura pixel points.
  • the target compensation gain coefficient is the compensation gain coefficient of the display of the target display panel under the second brightness relative to the first brightness.
  • the determining module 404 may be configured to determine a target compensation look-up table among the preset compensation look-up tables corresponding to the multiple mura levels.
  • the compensation lookup table is provided with a corresponding relationship between brightness and compensation gain coefficient.
  • the target compensation lookup table matches the target compensation gain coefficient, and is used to be called to compensate the target display panel.
  • At least one of the first grayscale data and the second grayscale data and the adjustable threshold value range are used to determine the Mura pixel point where the Mura phenomenon occurs in the target display panel, based on the Mura pixel point corresponding to the first One gray-scale data and the second gray-scale data, obtain the target compensation gain coefficient of the display panel of the target display panel under the second brightness relative to the first brightness, so as to be preset in a plurality of compensation look-up tables corresponding to a plurality of Mura levels , determine a target compensation lookup table matching the target compensation gain coefficient.
  • the target compensation lookup table is used to be called to compensate the target display panel.
  • the compensation lookup tables corresponding to the Mura levels of different display panels can be determined, and the corresponding compensation lookup tables can be used to compensate the corresponding display panels, so as to meet the compensation requirements of display panels with different Mura levels.
  • the compensation compatibility of display panels with different Mura levels has been improved, and the compensation effect in the multi-display panel scene has also been improved.
  • the above calculation module 403 can be used to calculate the first compensated gray scale value based on the first gray scale data corresponding to the Mura pixel by using a compensation algorithm, the first compensated gray scale value includes the Mura pixel The compensated gray scale value under a brightness; based on the second gray scale data corresponding to the Mura pixel point, the compensation algorithm is used to calculate the second compensated gray scale value, and the second compensated gray scale value includes the Mura pixel point under the second brightness Compensate the gray scale value; according to the second compensated gray scale value and the first compensated gray scale value, calculate the gain of the Mura pixel point under the second brightness relative to the compensation gray scale value under the first brightness; the Mura pixel point at the first brightness The gain at the second brightness relative to the compensation gray scale value at the first brightness is determined as the target compensation gain coefficient.
  • the target compensation gain coefficient and the first compensation gray scale value and the second compensation gray scale value satisfy the following relationship:
  • Gain' is the target compensation gain coefficient
  • Z1[i] is the first compensated gray scale value corresponding to the i-th Mura pixel
  • Z2[i] is the second compensated gray-scale value corresponding to the i-th Mura pixel
  • N is the total number of Mura pixels
  • i is an integer
  • 1 ⁇ i ⁇ N is the target compensation gain coefficient
  • the above determination module 404 can be used to: in multiple compensation look-up tables, look up the compensation gain coefficient corresponding to the second brightness closest to the target compensation gain coefficient under the second brightness; The compensation lookup table corresponding to the compensation gain coefficient closest to the second brightness is determined as the target compensation lookup table.
  • the pixel point determination module 402 may be configured to: count the number of candidate Mura pixel points according to at least one of the first grayscale data and the second grayscale data, where the candidate Mura pixel points include the first grayscale data Or the pixels whose second grayscale data exceed the adjustable threshold range; when the ratio of the number of candidate Mura pixels to the number of pixels of the target display panel is less than the preset screening ratio threshold, the candidate Mura pixels Determined as Mura pixels; when the ratio of the number of candidate Mura pixels to the number of pixels of the target display panel is greater than or equal to the preset screening ratio threshold, expand the adjustable threshold range according to the preset step size, and count The number of candidate Mura pixels corresponding to the expanded adjustable threshold range; the ratio of the number of candidate Mura pixels corresponding to the expanded adjustable threshold range to the number of pixels of the target display panel is less than the preset screening ratio Compared with the threshold value, the candidate mura pixel points corresponding to the expanded adjustable threshold value range are determined as mura pixel points.
  • the data acquisition module 401 can be used to: collect the first luminance value of the pixel point of the target display panel when the target display panel displays an image of the target grayscale of the first luminance; The first luminance value of the pixel point of the display panel is converted into the first grayscale data; in the case where the target display panel displays an image of the target grayscale of the second luminance, the second luminance value of the pixel point of the target display panel is collected; The conversion algorithm converts the second brightness value of the pixel point of the target display panel into the second gray scale data.
  • FIG. 14 is a schematic structural diagram of another embodiment of the device for configuring a compensation lookup table provided in the present application.
  • the difference between FIG. 14 and FIG. 13 is that the apparatus 400 for configuring the compensation lookup table shown in FIG. 14 may further include a compensation testing module 405 and a relationship establishing module 406 .
  • the compensation test module 405 can be used to obtain multiple display panels with multiple Mura levels, perform compensation tests on the multiple display panels respectively, and obtain compensation lookup tables for the multiple display panels.
  • the relationship establishment module 406 can be used to establish the correspondence between the Mura level and the compensation lookup table according to the correspondence between the display panel and the Mura level.
  • FIG. 15 is a schematic structural diagram of another embodiment of the device for configuring a compensation lookup table provided by the present application.
  • the difference between FIG. 15 and FIG. 13 is that the apparatus 400 for configuring the compensation lookup table shown in FIG. 15 may further include a programming control module 407 .
  • the burning control module 407 can be used for burning the target compensation look-up table to the target display panel.
  • FIG. 16 is a schematic structural diagram of an embodiment of a device for configuring a compensation lookup table provided in the present application.
  • the configuration device 500 of the compensation lookup table includes a memory 501, a processor 502, and a computer program stored in the memory 501 and operable on the processor 502.
  • the above-mentioned processor 502 may include a central processing unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • Memory 501 may include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk storage medium device, optical storage medium device, flash memory device, electrical, optical or other physical/tangible Memory storage device.
  • memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions, and when the software is executed (e.g., by one or When there are multiple processors), it is operable to execute the operations described with reference to the method for configuring the compensation lookup table according to the embodiment of the present application.
  • the processor 502 runs the computer program corresponding to the executable program code by reading the executable program code stored in the memory 501, so as to implement the method for configuring the compensation lookup table in the above-mentioned embodiment.
  • the device 500 for configuring a compensation lookup table may further include a communication interface 503 and a bus 504 .
  • the memory 501 , the processor 502 , and the communication interface 503 are connected through a bus 504 to complete mutual communication.
  • the communication interface 503 is mainly used to implement communication between modules, devices, units and/or devices in the embodiments of the present application. Input devices and/or output devices may also be accessed through the communication interface 503 .
  • the bus 504 includes hardware, software, or both, and couples the components of the configuration device 500 for the compensation lookup table to each other.
  • the bus 504 may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), Hyper Transport (HT) interconnect, Industrial Standard Architecture (ISA) bus, InfiniBand interconnect, Low pin count (Low pin count, LPC) bus, memory bus, Micro Channel architecture (Micro Channel Architecture, MCA) bus, Peripheral Component Interconnect (PCI) bus, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (Serial Advanced Technology Attachment, SATA) bus, Video Electronics Standards Association local ( Video Electronics Standards Association Local Bus, VLB) bus or other suitable bus or a combination of two or more of these.
  • Bus 504 may comprise one or more buses, where appropriate.
  • the fifth aspect of the present application further provides an integrated circuit chip, that is, an IC chip.
  • the IC chip can be programmed with the target compensation look-up table in the above-mentioned embodiments.
  • the IC chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the Mura compensation method in the above embodiment.
  • the sixth aspect of the present application also provides a computer-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the method for configuring the compensation lookup table in the above-mentioned embodiments can be realized , and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • the above-mentioned computer-readable storage medium may include a non-transitory computer-readable storage medium, such as a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk. etc., are not limited here.
  • processors may be, but are not limited to, general purpose processors, special purpose processors, application specific processors, or field programmable logic circuits. It can also be understood that each block in the block diagrams and/or flowcharts and combinations of blocks in the block diagrams and/or flowcharts can also be realized by dedicated hardware for performing specified functions or actions, or can be implemented by dedicated hardware and Combination of computer instructions to achieve.

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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Control Of El Displays (AREA)

Abstract

一种补偿查找表的配置、补偿方法、装置、设备及存储介质，该方法包括：获取目标显示面板的第一灰阶数据和第二灰阶数据（S101），第一灰阶数据包括目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，第二灰阶数据包括目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值；根据第一灰阶数据和第二灰阶数据中的至少一项以及可调阈值范围，确定目标显示面板中的Mura像素点（S102）；基于Mura像素点对应的第一灰阶数据和Mura像素点对应的第二灰阶数据，计算得到目标补偿增益系数（S103）；在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表（S104）。

Description

补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置
相关申请的交叉引用
本申请要求享有于2021年12月10日提交的名称为“补偿查找表的配置、补偿方法、装置、设备及存储介质”的中国专利申请202111510627.8的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请属于显示技术领域，尤其涉及一种补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置。
背景技术
随着显示技术的发展，显示面板的应用越来越广泛，对显示面板的显示效果的要求也越来越高。在显示面板生产过程中，显示面板会产生Mura现象。Mura现象是指显示面板显示的亮度不均匀，造成各种痕迹的现象。由于生产工艺、生产材料等原因，显示面板之间的Mura等级可能不同，Mura等级可体现显示面板的Mura现象的严重程度。显示面板之间的Mura现象的严重程度不同导致Mura补偿算法无法满足不同Mura等级的显示面板的补偿需求。
发明内容
本申请实施例提供一种补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置，能够满足不同Mura等级的显示面板的补偿需求。
第一方面，本申请实施例提供一种补偿查找表的配置方法，包括：获取目标显示面板的第一灰阶数据和第二灰阶数据，第一灰阶数据包括目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，第二灰阶数据 包括目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值，第二亮度不同于第一亮度；根据第一灰阶数据和第二灰阶数据中的至少一项，以及可调阈值范围，确定目标显示面板中的Mura像素点，Mura像素点的显示灰阶值超出可调阈值范围；基于Mura像素点对应的第一灰阶数据和Mura像素点对应的第二灰阶数据，计算得到目标补偿增益系数，目标补偿增益系数为目标显示面板的显示在第二亮度下相对于第一亮度的补偿增益系数；在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表，补偿查找表设置有亮度与补偿增益系数的对应关系，目标补偿查找表与目标补偿增益系数匹配，设置为被调用对目标显示面板进行补偿。
第二方面，本申请实施例提供一种显示面板的Mura补偿方法，该方法包括：获取显示面板的当前亮度；根据当前亮度，在目标补偿查找表中查找与当前亮度对应的补偿增益系数，目标补偿查找表设置有亮度与补偿增益系数的对应关系，目标补偿查找表为在多个Mura等级对应的多个补偿查找表中与目标补偿增益系数匹配的补偿查找表，目标补偿增益系数基于显示面板中Mura像素点的第一灰阶数据和第二灰阶数据确定，Mura像素点根据第一灰阶数据、第二灰阶数据中的至少一项以及可调阈值范围确定，第一灰阶数据包括显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，第二灰阶数据包括显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值；利用查找到的与当前亮度对应的补偿增益系数对显示面板进行补偿，第二亮度不同于第一亮度。
第三方面，本申请实施例提供一种补偿查找表的配置装置，包括：数据获取模块，设置为获取目标显示面板的第一灰阶数据和第二灰阶数据，第一灰阶数据包括目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，第二灰阶数据包括目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值，第二亮度不同于第一亮度；像素点确定模块，设置为根据第一灰阶数据和第二灰阶数据中的至少一项，以及可调阈值范围，确定目标显示面板中的Mura像素点，Mura像素点的显示灰阶值超出可调阈值范围；计算模块，设置为基于Mura像素点对应的第一灰阶数据和Mura像 素点对应的第二灰阶数据，计算得到目标补偿增益系数，目标补偿增益系数为目标显示面板的显示在第二亮度下相对于第一亮度的补偿增益系数；确定模块，设置为在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表，补偿查找表设置有亮度与补偿增益系数的对应关系，目标补偿查找表与目标补偿增益系数匹配，设置为被调用对目标显示面板进行补偿。
本申请实施例提供一种补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置，通过第一灰阶数据和第二灰阶数据中的至少一项以及可调阈值范围，确定目标显示面板中出现Mura现象的Mura像素点，基于Mura像素点对应的第一灰阶数据和第二灰阶数据，得到目标显示面板的显示在第二亮度下相对于第一亮度的目标补偿增益系数，以在预设与多个Mura等级对应的多个补偿查找表中，确定与目标补偿增益系数匹配的目标补偿查找表。目标补偿查找表用于被调用对目标显示面板进行补偿。可针对不同的显示面板，确定不同的显示面板各自对应的Mura等级的补偿查找表，以利用对应的补偿查找表对对应的显示面板进行补偿，从而可满足不同Mura等级的显示面板的补偿需求。
附图说明
图1为本申请提供的补偿查找表的配置方法的一实施例的示意图；
图2为本申请实施例提供的拍摄目标显示面板的一示例的示意图；
图3为本申请实施例提供的拍摄得到的目标显示面板在第一亮度下显示目标灰阶的图像的示意图；
图4为与图3所示的图像对应的显示灰阶补偿图；
图5为本申请实施例提供的拍摄得到的目标显示面板在第二亮度下显示目标灰阶的图像的示意图；
图6为与图5所示的图像对应的显示灰阶补偿图；
图7为图6所示的显示灰阶补偿图中Mura现象出现的区域的一示例的示意图；
图8为本申请实施例提供的不同Mura等级对应的补偿查找表LUT中 亮度与补偿增益系数的对应关系的一示例的曲线示意图；
图9为本申请实施例提供的不同Mura等级对应的补偿查找表LUT中亮度与补偿增益系数的对应关系的另一示例的曲线示意图；
图10为本申请提供的补偿查找表的配置方法的另一实施例的流程图；
图11为本申请提供的补偿查找表的配置方法的又一实施例的流程图；
图12为本申请提供的Mura补偿方法的一实施例的流程图；
图13为本申请提供的补偿查找表的配置装置的一实施例的结构示意图；
图14为本申请提供的补偿查找表的配置装置的另一实施例的结构示意图；
图15为本申请提供的补偿查找表的配置装置的又一实施例的结构示意图；
图16为本申请提供的补偿查找表的配置设备的一实施例的结构示意图。
具体实施方式
下面将详细描述本申请的各个方面的特征和示例性实施例，为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施例，对本申请进行进一步详细描述。应理解，此处所描述的具体实施例仅意在解释本申请，而不是限定本申请。对于本领域技术人员来说，本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本申请的示例来提供对本申请更好的理解。
随着显示技术的发展，显示面板的应用越来越广泛，对显示面板的显示效果的要求也越来越高。显示面板生产过程中，显示面板会产生Mura现象。Mura现象是指显示面板显示的亮度不均匀，造成各种痕迹的现象。由于生产工艺、生产材料等原因，显示面板之间的Mura现象的验证程度可能不同，即显示面板之间的Mura等级可能不同。相关技术的Mura补偿 算法无法满足不同Mura等级的显示面板的补偿需求，即使得一部分显示面板的补偿效果较差。
本申请实施例提供一种补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置，能够针对不同Mura等级的显示面板使用对应的补偿查找表LUT，补偿查找表LUT用于查找各亮度对应的补偿增益系数。利用与显示面板的Mura等级对应的补偿查找表LUT对该显示面板进行补偿，可满足不同Mura等级的显示面板的补偿需求，提高多显示面板的补偿效果。
下面对补偿查找表的配置方法、显示面板的补偿方法、补偿查找表的配置装置、设备及存储介质依次进行说明。
本申请第一方面提供一种补偿查找表的配置方法，可应用于补偿查找表的配置装置或设备，即该补偿查找表的配置方法可由补偿查找表的配置装置或设备执行，在此并不限定。图1为本申请提供的补偿查找表的配置方法的一实施例的示意图。如图1所示，该补偿查找表的配置方法可包括步骤S101至步骤S104。
在步骤S101中，获取目标显示面板的第一灰阶数据和第二灰阶数据。
第一灰阶数据包括目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值。第二灰阶数据包括目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值。目标灰阶为指示目标显示面板显示图像的某个特定灰阶，可选择任意一个灰阶，在此并不限定。例如，目标灰阶可为16灰阶、32灰阶、64灰阶、128灰阶、192灰阶、224灰阶等，也可为其他灰阶。由于显示面板存在Mura现象，因此显示面板中的部分像素点实际显示的灰阶值与目标灰阶值并不相同。显示灰阶值为像素点实际显示的灰阶值。目标显示面板中的像素点可包括目标显示面板中的子像素。
在一些示例中，第一灰阶数据可以矩阵形式存储，第二灰阶数据也可以矩阵形式存储。第一灰阶数据对应的矩阵中每个元素即为在该元素对应位置上的像素点在第一亮度下的目标灰阶的显示灰阶值。第二灰阶数据对应的矩阵中每个元素即为在该元素对应位置上的像素点在第二亮度下的目 标灰阶的显示灰阶值。矩阵中元素的位置与目标显示面板中的像素点的位置对应。
第二亮度不同于第一亮度。本申请实施例中可基于目标显示面板两个不同显示亮度条件下的像素点的显示亮度灰阶值，得到显示面板在第二亮度下相对于在第一亮度下进行补偿的补偿增益系数。在一些示例中，第一亮度可大于第二亮度。在另一些示例中，第一亮度可小于第二亮度。
在一些示例中，可在目标显示面板显示第一亮度的目标灰阶的图像的情况下，采集目标显示面板的像素点的第一亮度值。利用转换算法，将目标显示面板的像素点的第一亮度值转换为第一灰阶数据。在目标显示面板显示第二亮度的目标灰阶的图像的情况下，采集目标显示面板的像素点的第二亮度值。利用转换算法，将目标显示面板的像素点的第二亮度值转换为第二灰阶数据。
可控制目标显示面板显示第一亮度的目标灰阶的图像，利用电荷耦合器件(Charge Coupled Device，CCD)相机等光学采集设备拍摄目标显示面板显示的图像，从而采集目标显示面板的像素点的第一亮度值。第一亮度值为目标显示面板显示第一亮度的目标灰阶的图像的情况下像素点的亮度值，第一亮度值可以以逗号分隔值(Comma Separated Value，CSV)数据的形式实现，在此并不限定。同理，可控制目标显示面板显示第二亮度的目标灰阶的图像，利用CCD相机等光学采集设备拍摄目标显示面板显示的图像，从而采集目标显示面板的像素点的第二亮度值。第二亮度值为目标显示面板显示第二亮度的目标灰阶的图像的情况下像素点的亮度值，第二亮度值可以以CSV数据的形式实现，在此并不限定。上述显示面板显示的目标灰阶的图像可为单色图像，例如，单色图像可为绿色图像、蓝色图像或红色图像等，在此并不限定。通过亮度与灰度的转换算法，将第一亮度值和第二亮度值分别转换为第一灰阶数据和第二灰阶数据。在此并不对转换算法进行限定。
例如，图2为本申请实施例提供的拍摄目标显示面板的一示例的示意图。如图2所示，可利用CCD相机21对目标显示面板22进行拍摄，以拍摄目标显示面板显示第一亮度的目标灰阶的图像以及目标显示面板显示第 二亮度的目标灰阶的图像，并获取第一亮度值和第二亮度值。CCD相机21可将第一亮度值和第二亮度值存储在存储器23中。补偿查找表的配置装置24可从存储器23中获取第一亮度值和第二亮度值，并执行本申请实施例中的补偿查找表的配置方法。存储器23可为与补偿查找表独立的器件，也可集成在补偿查找表的配置装置24中，在此并不限定。
图3为本申请实施例提供的拍摄得到的目标显示面板在第一亮度情况下显示目标灰阶的图像的示意图。图4为与图3所示的图像对应的显示灰阶补偿图。图4中每个像素点的显示灰阶值可根据图3中每个像素点的第一亮度值利用转换算法转换得到，例如，转换算法包括补偿算法。图5为本申请实施例提供的拍摄得到的目标显示面板在第二亮度情况下显示目标灰阶的图像的示意图。图6为与图5所示的图像对应的显示灰阶补偿图。图6中每个像素点的显示灰阶值可根据图5中每个像素点的第二亮度值利用转换算法转换得到，例如，转换算法包括补偿算法。在一些示例中，利用转换算法将第一亮度值、第二亮度值分别转换为第一灰阶数据、第二灰阶数据即可，可不生成对应的显示灰阶补偿图。
在步骤S102中，根据第一灰阶数据和第二灰阶数据中的至少一项，以及可调阈值范围，确定目标显示面板中的Mura像素点。
Mura像素点包括目标显示面板中出现Mura现象的像素点，Mura像素点组成的区域即为目标显示面板中Mura现象发生的区域。在一些示例中，Mura像素点可包括目标显示面板中出现Mura现象最严重的像素点，Mura像素点组成的区域即为目标显示面板中Mura现象最严重的区域。可调阈值范围在确定目标显示面板中的Mura像素点的过程中是可调整的，即可调阈值范围是可变化的。可调阈值范围的中心可为目标灰阶。在一些示例中，可调阈值范围可为以目标灰阶为中心，在正方向和负方向上分别占据1至5个灰阶值，在此并不限定，其中，正方向为大于目标灰阶的方向，负方向为小于目标灰阶的方向，即，可调阈值范围可为从小于目标灰阶1至5灰阶值到大于目标灰阶1至5灰阶值的取值范围。可调阈值范围用于在目标显示面板的像素点中筛选Mura像素点，在筛选得到Mura像素点之前，可调阈值范围可逐渐扩大。Mura像素点的显示灰阶值超出可调阈 值范围，即可将显示灰阶值超出可调阈值范围的像素点确定为Mura像素点。
在一些示例中，可根据第一灰阶数据以及可调阈值范围，确定目标显示面板中的Mura像素点。具体地，可将第一亮度下的目标灰阶的显示灰阶值超出最终确定的可调阈值范围的像素点确定为Mura像素点。
在另一些示例中，可根据第二灰阶数据以及可调阈值范围，确定目标显示面板中的Mura像素点。具体地，可将第二亮度下的目标灰阶的显示灰阶值超出最终确定的可调阈值范围的像素点确定为Mura像素点。例如，图7为图6所示的显示灰阶补偿图中Mura现象出现的区域的一示例的示意图。如图7所示，方框25框住的区域即为Mura现象出现的区域，方框25内的像素点包括Mura像素点。在一些情况下，方框25框住的区域可为Mura现象最严重的区域。
在又一些示例中，可根据第一灰阶数据、第二灰阶数据以及可调阈值范围，确定目标显示面板中的Mura像素点。具体地，可将第一亮度下的目标灰阶的显示灰阶值超出最终确定的可调阈值范围的像素点和第二亮度下的目标灰阶的显示灰阶值超出最终确定的可调阈值范围的像素点的交集确定为Mura像素点。
如图5所示，第二亮度小于第一亮度，可根据第二灰阶数据以及可调阈值范围确定Mura像素点，或根据第一灰阶数据、第二灰阶数据以及可调阈值范围确定Mura像素点。由于Mura现象在显示面板显示相对较低亮度时更加明显，根据包括第二灰阶数据的数据以及可调阈值范围确定得到的Mura像素点会更为准确，从而提高得到与目标显示面板对应的补偿查找表的准确性。
在一些示例中，可根据第一灰阶数据和第二灰阶数据中的至少一项，统计候选Mura像素点的数量，候选Mura像素点包括第一灰阶数据或第二灰阶数据超出可调阈值范围的像素点；在候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于预设筛选占比阈值的情况下，将候选Mura像素点确定为Mura像素点；在候选Mura像素点的数量占目标显示面板的像素点的数量的占比大于或等于预设筛选占比阈值的情况下，按照 预设步长扩大可调阈值范围，统计扩大后的可调阈值范围对应的候选Mura像素点的数量；直至与扩大后的可调阈值范围对应的候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于预设筛选占比阈值，将与扩大后的可调阈值范围对应的候选Mura像素点确定为Mura像素点。
为了能够获取到显示面板中出现Mura现象的像素点甚至是出现Mura现象最严重的像素点，需要限制Mura像素点的数量。因此可通过扩大可调阈值范围，来减少候选Mura像素点的数量。例如，可按照预设步长逐渐地扩大可调阈值范围，预设步长可根据场景、需求、经验等设置，在此并不限定。在候选Mura像素点的数量减少到一定程度的情况下，将候选Mura像素点确定为Mura像素点。可利用预设筛选占比阈值来限定候选Mura像素点的数量需要减少到的程度，预设筛选占比阈值可根据场景、需求、经验等设置，在此并不限定。
例如，根据第二灰阶数据以及可调阈值范围确定Mura像素点。目标灰阶为128灰阶，可对应将可调阈值范围设置为(127,129)，即可调阈值范围为大于127灰阶且小于129灰阶；预设步长为1灰阶；预设筛选占比阈值可为10％、8％、5％、1％、0.5％、0.4％、0.3％、0.2％或者0.1％。以预设筛选占比阈值为1％为例，将第二灰阶数据超出可调阈值范围(127,129)的像素点确定为候选Mura像素点。若候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于1％，则可直接将候选Mura像素点作为Mura像素点。若候选Mura像素点的数量占目标显示面板的像素点的数量的占比大于或等于1％，则将可调阈值范围扩大为(126,130)，将第二灰阶数据超出可调阈值范围(126,130)的像素点确定为候选Mura像素点。若利用可调阈值范围(126,130)筛选出的候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于1％，将利用可调阈值范围(126,130)筛选出的候选Mura像素点确定为Mura像素点。若利用可调阈值范围(126,130)筛选出的候选Mura像素点的数量占目标显示面板的像素点的数量的占大于或等于1％，则需要再次扩大可调阈值范围，将可调阈值范围扩大为(125,131)，以此类推，直至利用某次扩大后的可调阈值范围筛选出的候选Mura像素点的数量占目标显示面板 的像素点的数量的占比小于1％，将利用某次扩大后的可调阈值范围筛选出的候选Mura像素点确定为Mura像素点。
在一些示例中，第一灰阶数据和第二灰阶数据以矩阵形式存储，可将Mura像素点的显示灰阶值在矩阵中的坐标以二维数组的方式存储记录，在此并不限定。
在步骤S103中，基于Mura像素点对应的第一灰阶数据和Mura像素点对应的第二灰阶数据，计算得到目标补偿增益系数。
目标补偿增益系数为目标显示面板的显示在第二亮度下相对于第一亮度的补偿增益系数。目标补偿增益系数为目标显示面板在显示第二亮度情况下所对应的补偿增益系数。在一些示例中，目标显示面板显示第二亮度的目标灰阶的图像的情况下的补偿数据与目标显示面板显示第一亮度的图像的情况下的补偿数据的比值等于目标补偿增益系数。
在一些示例中，可对第一灰阶数据和第二灰阶数据分别进行相同的处理，根据处理第一灰阶数据得到的第一结果数据和处理第二灰阶数据得到的第二结果数据，可计算得到目标补偿增益系数。例如，可将第一结果数据与第二结果数据的比值确定为目标补偿增益系数，或者，可将第二结果数据与第一结果数据的比值确定为目标补偿增益系数。
在步骤S104中，在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表。
补偿查找表设置有亮度与补偿增益系数的对应关系。例如，补偿查找表如下面的表一所示：
表一
Figure PCTCN2022108307-appb-000001
其中，51寄存器值表征亮度。表一示出了某一Mura等级下的显示面板在各亮度下的补偿增益系数。
补偿查找表的配置装置或设备中可预先存储与多个Mura等级对应的多个补偿查找表LUT。Mura等级与补偿查找表LUT一一对应。不同Mura等级对应的补偿查找表LUT中亮度与补偿增益系数的对应关系可不同。例如，图8为本申请实施例提供的不同Mura等级对应的补偿查找表LUT中亮度与补偿增益系数的对应关系的一示例的曲线示意图。图9为本申请实施例提供的不同Mura等级对应的补偿查找表LUT中亮度与补偿增益系数的对应关系的另一示例的曲线示意图。图8示出的补偿查找表LUT中亮度与补偿增益系数的对应关系为一次式关系，如Y＝aX+b，Y为纵坐标，表示补偿增益系数即Gain值，X为横坐标，表示亮度，这里亮度用显示亮度值(Display Brightness Value，DBV)表示，a和b为常数系数。图9示出的补偿查找表LUT中亮度与补偿增益系数的对应关系为二次式关系，如Y＝aX 2+bX+c，Y为纵坐标，表示补偿增益系数即Gain值，X为横坐标，表示亮度，这里亮度用DBV表示，a、b和c为常数系数。如图8和图9所示，Mura等级可包括轻微等级、中等等级和严重等级。轻微等级、中等等级和严重等级各自对应的亮度与补偿增益系数的关系曲线均不同。因此，不同Mura等级的显示面板在进行补偿时，采用与自身Mura等级对应的补偿查找表LUT才能够得到准确的补偿，提高显示面板的显示效果。
补偿查找表LUT的实质为亮度和补偿增益系数的对应关系，与Mura等级相关，每个Mura等级对应一种亮度和补偿增益系数的对应关系即补偿查找表LUT。与多个Mura等级对应的多个补偿查找表可具体实现为多个表格，即每个补偿查找表存储为一个表格。与多个Mura等级对应的多个补偿查找表LUT也可具体实现为一张表格，每个补偿查找表LUT可实现为这一张表格中的一行单元格或一列单元格，从而使得一张表格能够容纳多个Mura等级对应的多个补偿查找表LUT。Mura等级可用最小可察觉误差(Just Noticeable Difference，JND)表示。例如，实现为一张表的与多个Mura等级对应的多个补偿查找表LUT可如下面的表二所示：
表二
Figure PCTCN2022108307-appb-000002
其中，51寄存器值表征亮度。表二示出了五个Mura等级即五个不同的JND对应的显示面板在各亮度下的补偿增益系数。由表二可以得知，在同一亮度下，不同Mura等级对应的显示面板的补偿增益系数可以不同。
目标补偿查找表与目标补偿增益系数匹配，用于被调用对目标显示面板进行补偿。也就是说，目标补偿查找表为与目标补偿增益系数匹配的查找表。例如，相同亮度下，目标补偿查找表中的补偿增益系数与目标补偿增益系数最接近。
在本申请实施例中，通过第一灰阶数据和第二灰阶数据中的至少一项以及可调阈值范围，确定目标显示面板中出现Mura现象的Mura像素点，基于Mura像素点对应的第一灰阶数据和第二灰阶数据，得到目标显示面板的显示在第二亮度下相对于第一亮度的目标补偿增益系数，以在预设与多个Mura等级对应的多个补偿查找表中，确定与目标补偿增益系数匹配的目标补偿查找表。目标补偿查找表用于被调用对目标显示面板进行补偿。可针对不同的显示面板，确定不同的显示面板各自对应的Mura等级的补偿查找表，以利用对应的补偿查找表对对应的显示面板进行补偿，从而可满足不同Mura等级的显示面板的补偿需求，提高了不同Mura等级的显示面板的补偿兼容性，也提高了多显示面板场景下的补偿效果。
在一些示例中，第一亮度为标准亮度即Normal亮度，第二亮度为标准亮度的三分之一。例如，第一亮度可为300尼特，第二亮度可为100尼特。用户常在室内使用包括显示面板的显示装置，由于室内光线较室外较暗，显示面板为了适应环境，显示面板显示的亮度也会较低，而Mura现 象在显示面板显示的亮度较低的情况下更为明显，为了保证显示面板较低亮度下的补偿更为准确，第一亮度可选择Normal亮度，第二亮度为第一亮度的三分之一即1/3Normal亮度。本申请实施例中的目标补偿增益系数包括目标显示面板的显示在1/3Normal亮度相对于Normal亮度的补偿增益系数，能够使根据目标补偿增益系数确定的目标补偿查找表与目标显示面板更加合适，对目标显示面板的补偿更加准确。
在一些示例中，所述第一亮度为标准亮度，所述第二亮度为标准亮度的四分之一。
在一些示例中，第一亮度可为标准亮度，第二亮度可为标准亮度的八分之一到三分之一。
在一些示例中，第一亮度可大于目标显示面板的最高亮度的二分之一，第二亮度可小于最高亮度的二分之一。
在本申请实施例中，并不限定第一亮度与第二亮度的具体取值。
图10为本申请提供的补偿查找表的配置方法的另一实施例的流程图。图10与图1的不同之处在于，图1中的步骤103可具体细化为图10中的步骤S1031至步骤S1034，图1中的步骤S104可具体细化为图10中的步骤S1041和步骤S1042。
在步骤S1031中，基于Mura像素点对应的第一灰阶数据，利用补偿算法，计算得到第一补偿灰阶值。
第一补偿灰阶值包括Mura像素点在第一亮度下的补偿灰阶值。在一些示例中，可根据Mura像素点在第一亮度下的目标灰阶的显示灰阶值和目标灰阶，或者，根据Mura像素点在第一亮度下的目标灰阶的显示灰阶值和对应的期望灰阶值，利用补偿算法，得到Mura像素点在第一亮度下的补偿灰阶值。在此并不限定补偿算法的类别和方式。第一补偿灰阶值可以数组方式存储，在此并不限定。
在步骤S1032中，基于Mura像素点对应的第二灰阶数据，利用补偿算法，计算得到第二补偿灰阶值。
第二补偿灰阶值包括Mura像素点在第二亮度下的补偿灰阶值。在一些示例中，可根据Mura像素点在第二亮度下的目标灰阶的显示灰阶值和 目标灰阶，或者，根据Mura像素点在第二亮度下的目标灰阶的显示灰阶值和对应的期望灰阶值，利用补偿算法，得到Mura像素点在第二亮度下的补偿灰阶值。步骤S1032中的补偿方法与步骤S1031中的补偿方法一致。第二补偿灰阶值可以数组方式存储，在此并不限定。
步骤S1031和步骤S1032可先后执行，也可同步执行，在此并不限定步骤S1031和步骤S1032的执行顺序。
在步骤S1033中，根据第二补偿灰阶值和第一补偿灰阶值，计算Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益。
Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益能够表征目标显示面板的显示在第二亮度下相对于第一亮度的补偿增益系数。可对第二补偿灰阶值和第一补偿灰阶值分别进行处理，将处理第二补偿灰阶值得到的数据与处理第一补偿灰阶值得到的数据的比值作为Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益。
在一些示例中，目标补偿增益系数与第一补偿灰阶值、第二补偿灰阶值满足以下关系：
Figure PCTCN2022108307-appb-000003
其中，Gain′为目标补偿增益系数；Z1[i]为第i个Mura像素点对应的第一补偿灰阶值，即Z1[i]为第i个Mura像素点在第一亮度下的补偿灰阶值；Z2[i]为第i个Mura像素点对应的第二补偿灰阶值，即Z2[i]为第i个Mura像素点在第二亮度下的补偿灰阶值；N为Mura像素点的总数，i为整数，且1≤i≤N。
在步骤S1034中，将Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益确定为目标补偿增益系数。
在步骤S1041中，在多个补偿查找表中，查找第二亮度下与目标补偿增益系数最接近的第二亮度对应的补偿增益系数。
在步骤S1042中，将包括与目标补偿增益系数最接近的第二亮度对应的补偿增益系数的补偿查找表确定为目标补偿查找表。
若多个补偿查找表LUT中第二亮度下的补偿增益系数中存在与目标补偿增益系数相等的补偿增益参数，可将第二亮度下与目标补偿增益系数相等的补偿增益参数所在的补偿查找表LUT确定为目标补偿查找表。
若多个补偿查找表LUT中第二亮度下的补偿增益系数中不存在与目标补偿增益系数相等的补偿增益参数，可查找多个补偿查找表LUT中第二亮度下与目标补偿增益系数的差值的绝对值最小的补偿增益参数，将第二亮度下与目标补偿增益系数的差值的绝对值最小的补偿增益参数所在的补偿查找表LUT确定为目标补偿查找表。
在一些实施例中，在执行上述步骤S101至步骤S104之前，可预先建立Mura等级与补偿查找表之间的对应关系，以便于后续过程中进行查找。图11为本申请提供的补偿查找表的配置方法的又一实施例的流程图。图11与图1的不同之处在于，图11所示的补偿查找表的配置方法还可包括步骤S105和步骤S106。
在步骤S105中，获取多个Mura等级的多个显示面板，对多个显示面板分别进行补偿测试，得到多个显示面板的补偿查找表。
可预先获取少量的显示面板，通过对显示面板的测试，确定显示面板的Mura等级。对多个显示面板分别进行补偿测试，可得到多个显示面板各自亮度与补偿增益系数的对应关系，从而得到多个显示面板各自的补偿查找表LUT。
在步骤S106中，根据显示面板与Mura等级的对应关系，建立Mura等级与补偿查找表的对应关系。
显示面板具有对应的补偿查找表LUT，显示面板与Mura等级也具有对应关系。根据显示面板对应的补偿查找表LUT，以及显示面板与Mura等级的对应关系，可建立Mura等级与补偿查找表的对应关系，以便于在步骤S104中预先得到多个Mura等级对应的多个补偿查找表。
在一些实施例中，为了使得显示面板出厂后能够直接利用目标补偿查找表进行补偿，可在确定目标补偿查找表之后，将目标补偿查找表烧录至目标显示面板中。目标显示面板出厂后，在用户使用的过程中，可直接利用烧录至目标显示面板的目标补偿查找表对目标显示面板的显示进行补 偿，提高目标显示面板的显示效果。
本申请第二方面提供一种显示面板的Mura补偿方法，该Mura补偿方法可应用于显示面板。图12为本申请提供的Mura补偿方法的一实施例的流程图。如图12所示，该Mura补偿方法可包括步骤S301至步骤S303。
在步骤S301中，获取显示面板的当前亮度。
在步骤S302中，根据当前亮度，在目标补偿查找表中查找与当前亮度对应的补偿增益系数。
目标补偿查找表设置有亮度与补偿增益系数的对应关系。目标补偿查找表为在多个Mura等级对应的多个补偿查找表中与目标补偿增益系数匹配的补偿查找表，即目标补偿查找表为与该显示面板的Mura等级匹配的补偿查找表。目标补偿增益系数基于显示面板中Mura像素点的第一灰阶数据和第二灰阶数据确定。Mura像素点根据第一灰阶数据、第二灰阶数据中的至少一项以及可调阈值范围确定。第一灰阶数据包括显示面板各像素点在一亮度下的目标灰阶的显示灰阶值。第二灰阶数据包括显示面板各像素点在另一亮度下的目标灰阶的显示灰阶值。
目标补偿查找表的具体内容可参见上述实施例中的相关说明，在此不再赘述。
在步骤S303中，利用查找到的与当前亮度对应的补偿增益系数对显示面板进行补偿。
在本申请实施例中，显示面板对应的目标补偿查找表为与该显示面板的Mura等级对应的补偿查找表。补偿查找表设置有亮度与补偿增益系数的对应关系。可利用显示面板对应的目标补偿查找表，确定目标补偿查找表中与当前亮度对应的补偿增益系数，利用目标补偿查找表中与当前亮度对应的补偿增益系数，对该显示面板进行补偿。由于目标补偿查找表与显示面板的Mura等级匹配，因此可满足该显示面板的补偿需求，提高了该显示面板的补偿效果。
本申请第三方面提供一种补偿查找表的配置装置。图13为本申请提供的补偿查找表的配置装置的一实施例的结构示意图。如图13所示，该补偿查找表的配置装置400可包括数据获取模块401、像素点确定模块 402、计算模块403和确定模块404。
数据获取模块401可用于获取目标显示面板的第一灰阶数据和第二灰阶数据。
第一灰阶数据包括目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值。第二灰阶数据包括目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值。第二亮度不同于第一亮度。
在一些示例中，第一亮度为标准亮度，第二亮度为标准亮度的三分之一。
在一些示例中，所述第一亮度为标准亮度，所述第二亮度为标准亮度的四分之一。
在一些示例中，所述第一亮度大于第二亮度，所述第二亮度为标准亮度的八分之一到三分之一。
在一些示例中，所述第一亮度大于所述目标显示面板的最高亮度的二分之一，所述第二亮度小于最高亮度的二分之一。
第一亮度和第二亮度并不限上述说明。
像素点确定模块402可用于根据第一灰阶数据和第二灰阶数据中的至少一项，以及可调阈值范围，确定目标显示面板中的Mura像素点。
Mura像素点的显示灰阶值超出可调阈值范围。
计算模块403可用于基于Mura像素点对应的第一灰阶数据和Mura像素点对应的第二灰阶数据，计算得到目标补偿增益系数。
目标补偿增益系数为目标显示面板的显示在第二亮度下相对于第一亮度的补偿增益系数。
确定模块404可用于在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表。
补偿查找表设置有亮度与补偿增益系数的对应关系。目标补偿查找表与目标补偿增益系数匹配，用于被调用对目标显示面板进行补偿。
在本申请实施例中，通过第一灰阶数据和第二灰阶数据中的至少一项以及可调阈值范围，确定目标显示面板中出现Mura现象的Mura像素点，基于Mura像素点对应的第一灰阶数据和第二灰阶数据，得到目标显示面 板的显示在第二亮度下相对于第一亮度的目标补偿增益系数，以在预设与多个Mura等级对应的多个补偿查找表中，确定与目标补偿增益系数匹配的目标补偿查找表。目标补偿查找表用于被调用对目标显示面板进行补偿。可针对不同的显示面板，确定不同的显示面板各自对应的Mura等级的补偿查找表，以利用对应的补偿查找表对对应的显示面板进行补偿，从而可满足不同Mura等级的显示面板的补偿需求，提高了不同Mura等级的显示面板的补偿兼容性，也提高了多显示面板场景下的补偿效果。
在一些实施例中，上述计算模块403可用于：基于Mura像素点对应的第一灰阶数据，利用补偿算法，计算得到第一补偿灰阶值，第一补偿灰阶值包括Mura像素点在第一亮度下的补偿灰阶值；基于Mura像素点对应的第二灰阶数据，利用补偿算法，计算得到第二补偿灰阶值，第二补偿灰阶值包括Mura像素点在第二亮度下的补偿灰阶值；根据第二补偿灰阶值和第一补偿灰阶值，计算Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益；将Mura像素点在第二亮度下相对于在第一亮度下的补偿灰阶值的增益确定为目标补偿增益系数。
在一些示例中，目标补偿增益系数与第一补偿灰阶值、第二补偿灰阶值满足以下关系：
Figure PCTCN2022108307-appb-000004
其中，Gain′为目标补偿增益系数，Z1[i]为第i个Mura像素点对应的第一补偿灰阶值，Z2[i]为第i个Mura像素点对应的第二补偿灰阶值，N为Mura像素点的总数，i为整数，且1≤i≤N。
在一些实施例中，上述确定模块404可用于：在多个补偿查找表中，查找第二亮度下与目标补偿增益系数最接近的第二亮度对应的补偿增益系数；将包括与目标补偿增益系数最接近的第二亮度对应的补偿增益系数的补偿查找表确定为目标补偿查找表。
在一些实施例中，像素点确定模块402可用于：根据第一灰阶数据和第二灰阶数据中的至少一项，统计候选Mura像素点的数量，候选Mura像 素点包括第一灰阶数据或第二灰阶数据超出可调阈值范围的像素点；在候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于预设筛选占比阈值的情况下，将候选Mura像素点确定为Mura像素点；在候选Mura像素点的数量占目标显示面板的像素点的数量的占比大于或等于预设筛选占比阈值的情况下，按照预设步长扩大可调阈值范围，统计扩大后的可调阈值范围对应的候选Mura像素点的数量；直至与扩大后的可调阈值范围对应的候选Mura像素点的数量占目标显示面板的像素点的数量的占比小于预设筛选占比阈值，将与扩大后的可调阈值范围对应的候选Mura像素点确定为Mura像素点。
在一些实施例中，数据获取模块401可用于：在目标显示面板显示第一亮度的目标灰阶的图像的情况下，采集目标显示面板的像素点的第一亮度值；利用转换算法，将目标显示面板的像素点的第一亮度值转换为第一灰阶数据；在目标显示面板显示第二亮度的目标灰阶的图像的情况下，采集目标显示面板的像素点的第二亮度值；利用转换算法，将目标显示面板的像素点的第二亮度值转换为第二灰阶数据。
图14为本申请提供的补偿查找表的配置装置的另一实施例的结构示意图。图14与图13的不同之处在于，图14所示的补偿查找表的配置装置400还可包括补偿测试模块405和关系建立模块406。
补偿测试模块405可用于获取多个Mura等级的多个显示面板，对多个显示面板分别进行补偿测试，得到多个显示面板的补偿查找表。
关系建立模块406可用于根据显示面板与Mura等级的对应关系，建立Mura等级与补偿查找表的对应关系。
图15为本申请提供的补偿查找表的配置装置的又一实施例的结构示意图。图15与图13的不同之处在于，图15所示的补偿查找表的配置装置400还可包括烧录控制模块407。
烧录控制模块407可用于将目标补偿查找表烧录至目标显示面板。
本申请第四方面还提供了一种补偿查找表的配置设备。图16为本申请提供的补偿查找表的配置设备的一实施例的结构示意图。如图16所示，补偿查找表的配置设备500包括存储器501、处理器502及存储在存 储器501上并可在处理器502上运行的计算机程序。
在一个示例中，上述处理器502可以包括中央处理器(CPU)，或者特定集成电路(Application Specific Integrated Circuit，ASIC)，或者可以被配置成实施本申请实施例的一个或多个集成电路。
存储器501可包括只读存储器(Read-Only Memory，ROM)，随机存取存储器(Random Access Memory，RAM)，磁盘存储介质设备，光存储介质设备，闪存设备，电气、光学或其他物理/有形的存储器存储设备。因此，通常，存储器包括一个或多个编码有包括计算机可执行指令的软件的有形(非暂态)计算机可读存储介质(例如，存储器设备)，并且当该软件被执行(例如，由一个或多个处理器)时，其可操作来执行参考根据本申请实施例中补偿查找表的配置方法所描述的操作。
处理器502通过读取存储器501中存储的可执行程序代码来运行与可执行程序代码对应的计算机程序，以用于实现上述实施例中的补偿查找表的配置方法。
在一些示例中，补偿查找表的配置设备500还可包括通信接口503和总线504。其中，如图16所示，存储器501、处理器502、通信接口503通过总线504连接并完成相互间的通信。
通信接口503，主要用于实现本申请实施例中各模块、装置、单元和/或设备之间的通信。也可通过通信接口503接入输入设备和/或输出设备。
总线504包括硬件、软件或两者，将补偿查找表的配置设备500的部件彼此耦接在一起。举例来说而非限制，总线504可包括加速图形端口(Accelerated Graphics Port，AGP)或其他图形总线、增强工业标准架构(Enhanced Industry Standard Architecture，EISA)总线、前端总线(Front Side Bus，FSB)、超传输(Hyper Transport，HT)互连、工业标准架构(Industrial Standard Architecture，ISA)总线、无限带宽互连、低引脚数(Low pin count，LPC)总线、存储器总线、微信道架构(Micro Channel Architecture，MCA)总线、外围组件互连(Peripheral Component Interconnect，PCI)总线、PCI-Express(PCI-X)总线、串行高级技术附件(Serial Advanced Technology Attachment，SATA)总线、视频电子标准协 会局部(Video Electronics Standards Association Local Bus，VLB)总线或其他合适的总线或者两个或更多个以上这些的组合。在合适的情况下，总线504可包括一个或多个总线。尽管本申请实施例描述和示出了特定的总线，但本申请考虑任何合适的总线或互连。
本申请第五方面还提供一种集成电路芯片即IC芯片。该IC芯片可烧录有上述实施例中的目标补偿查找表。该IC芯片包括处理器和通信接口，通信接口和处理器耦合，处理器用于运行程序或指令，实现上述实施例中的Mura补偿方法。
本申请第六方面还提供一种计算机可读存储介质，该计算机可读存储介质上存储有计算机程序指令，该计算机程序指令被处理器执行时可实现上述实施例中的补偿查找表的配置方法，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，上述计算机可读存储介质可包括非暂态计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等，在此并不限定。
需要明确的是，本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同或相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。对于装置实施例、设备实施例、芯片实施例、计算机可读存储介质实施例而言，相关之处可以参见方法实施例的说明部分。本申请并不局限于上文所描述并在图中示出的特定步骤和结构。本领域的技术人员可以在领会本申请的精神之后，作出各种改变、修改和添加，或者改变步骤之间的顺序。并且，为了简明起见，这里省略对已知方法技术的详细描述。
上面参考根据本申请的实施例的方法、装置(系统)和计算机程序产品的流程图和/或框图描述了本申请的各方面。应当理解，流程图和/或框图中的每个方框以及流程图和/或框图中各方框的组合可以由计算机程序指令实现。这些计算机程序指令可被提供给通用计算机、专用计算机、或其它可编程数据处理装置的处理器，以产生一种机器，使得经由计算机或其它可编程数据处理装置的处理器执行的这些指令使能对流程图和/或框图的 一个或多个方框中指定的功能/动作的实现。这种处理器可以是但不限于是通用处理器、专用处理器、特殊应用处理器或者现场可编程逻辑电路。还可理解，框图和/或流程图中的每个方框以及框图和/或流程图中的方框的组合，也可以由执行指定的功能或动作的专用硬件来实现，或可由专用硬件和计算机指令的组合来实现。
本领域技术人员应能理解，上述实施例均是示例性而非限制性的。在不同实施例中出现的不同技术特征可以进行组合，以取得有益效果。本领域技术人员在研究附图、说明书及权利要求书的基础上，应能理解并实现所揭示的实施例的其他变化的实施例。在权利要求书中，术语“包括”并不排除其他装置或步骤；数量词“一个”不排除多个；术语“第一”、“第二”用于标示名称而非用于表示任何特定的顺序。权利要求中的任何附图标记均不应被理解为对保护范围的限制。权利要求中出现的多个部分的功能可以由一个单独的硬件或软件模块来实现。某些技术特征出现在不同的从属权利要求中并不意味着不能将这些技术特征进行组合以取得有益效果。

Claims (18)

  1. 一种补偿查找表的配置方法，包括：
    获取目标显示面板的第一灰阶数据和第二灰阶数据，所述第一灰阶数据包括所述目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，所述第二灰阶数据包括所述目标显示面板各像素点在第二亮度下的所述目标灰阶的显示灰阶值，所述第二亮度不同于所述第一亮度；
    根据所述第一灰阶数据和所述第二灰阶数据中的至少一项，以及可调阈值范围，确定所述目标显示面板中的Mura像素点，所述Mura像素点的显示灰阶值超出所述可调阈值范围；
    基于所述Mura像素点对应的所述第一灰阶数据和所述Mura像素点对应的所述第二灰阶数据，计算得到目标补偿增益系数，所述目标补偿增益系数为所述目标显示面板显示在所述第二亮度下相对于所述第一亮度的补偿增益系数；
    在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表，所述补偿查找表设置有亮度与补偿增益系数的对应关系，所述目标补偿查找表与所述目标补偿增益系数匹配，设置为被调用对所述目标显示面板进行补偿。
  2. 根据权利要求1所述的方法，其中，所述基于所述Mura像素点对应的所述第一灰阶数据和所述Mura像素点对应的所述第二灰阶数据，计算得到目标补偿增益系数，包括：
    基于所述Mura像素点对应的所述第一灰阶数据，利用补偿算法，计算得到第一补偿灰阶值，所述第一补偿灰阶值包括所述Mura像素点在所述第一亮度下的补偿灰阶值；
    基于所述Mura像素点对应的所述第二灰阶数据，利用补偿算法，计算得到第二补偿灰阶值，所述第二补偿灰阶值包括所述Mura像素点在所述第二亮度下的补偿灰阶值；
    根据所述第二补偿灰阶值和所述第一补偿灰阶值，计算所述Mura像素点在所述第二亮度下相对于在所述第一亮度下的补偿灰阶值的增益；
    将所述Mura像素点在所述第二亮度下相对于在所述第一亮度下的补偿灰阶值的增益确定为所述目标补偿增益系数。
  3. 根据权利要求2所述的方法，其中，所述目标补偿增益系数与所述第一补偿灰阶值、第二补偿灰阶值满足以下关系：
    Figure PCTCN2022108307-appb-100001
    其中，Gain′为所述目标补偿增益系数，Z1[i]为第i个所述Mura像素点对应的所述第一补偿灰阶值，Z2[i]为第i个所述Mura像素点对应的所述第二补偿灰阶值，N为所述Mura像素点的总数，i为整数，且1≤i≤N。
  4. 根据权利要求1所述的方法，其中，所述在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表，包括：
    在所述多个补偿查找表中，查找所述第二亮度下与所述目标补偿增益系数最接近的所述第二亮度对应的补偿增益系数；
    将包括与所述目标补偿增益系数最接近的所述第二亮度对应的补偿增益系数的所述补偿查找表确定为所述目标补偿查找表。
  5. 根据权利要求4所述的方法，其中，
    在所述多个补偿查找表中所述第二亮度下的补偿增益系数中存在与所述目标补偿增益系数相等的补偿增益参数的情况下，将所述第二亮度下与所述目标补偿增益系数相等的补偿增益参数所在的补偿查找表确定为所述目标补偿查找表。
  6. 根据权利要求4所述的方法，其中，
    在多个所述补偿查找表中所述第二亮度下的补偿增益系数中不存在与所述目标补偿增益系数相等的补偿增益参数的情况下，查找所述多个补偿查找表中所述第二亮度下与所述目标补偿增益系数的差值的绝对值最小的补偿增益参数，将所述第二亮度下与所述目标补偿增益系数的差值的绝对值最小的补偿增益参数所在的所述补偿查找表确定为所述目标补偿查找表。
  7. 根据权利要求4所述的方法，其中，
    所述第一亮度为标准亮度，所述第二亮度为所述标准亮度的三分之一；
    或者，
    所述第一亮度为标准亮度，所述第二亮度为所述标准亮度的四分之一；
    或者，
    所述第一亮度大于第二亮度，所述第二亮度为所述标准亮度的八分之一到三分之一；
    或者，
    所述第一亮度大于所述目标显示面板的最高亮度的二分之一，所述第二亮度小于所述最高亮度的二分之一。
  8. 根据权利要求1所述的方法，其中，所述根据所述第一灰阶数据和所述第二灰阶数据中的至少一项，以及可调阈值范围，确定所述目标显示面板中的Mura像素点，包括：
    根据所述第一灰阶数据和所述第二灰阶数据中的至少一项，统计候选Mura像素点的数量，所述候选Mura像素点包括第一灰阶数据或所述第二灰阶数据超出所述可调阈值范围的像素点；
    在所述候选Mura像素点的数量占所述目标显示面板的像素点的数量的占比小于预设筛选占比阈值的情况下，将所述候选Mura像素点确定为所述Mura像素点；
    在所述候选Mura像素点的数量占所述目标显示面板的像素点的数量的占比大于或等于所述预设筛选占比阈值的情况下，按照预设步长扩大所述可调阈值范围，统计扩大后的所述可调阈值范围对应的所述候选Mura像素点的数量；
    直至与扩大后的所述可调阈值范围对应的所述候选Mura像素点的数量占所述目标显示面板的像素点的数量的占比小于所述预设筛选占比阈值，将与扩大后的所述可调阈值范围对应的所述候选Mura像素点确定为所述Mura像素点。
  9. 根据权利要求8所述的方法，其中，所述可调阈值范围为从小于所述目标灰阶1至5灰阶值到大于所述目标灰阶1至5灰阶值的范围。
  10. 根据权利要求1所述的方法，其中，所述获取所述目标显示面板的第一灰阶数据和第二灰阶数据，包括：
    在所述目标显示面板在所述第一亮度下显示目标灰阶的图像的情况下，采集所述目标显示面板的像素点的第一亮度值；
    利用转换算法，将所述目标显示面板的像素点的第一亮度值转换为所述第一灰阶数据；
    在所述目标显示面板在所述第二亮度下显示目标灰阶的图像的情况下，采集所述目标显示面板的像素点的第二亮度值；
    利用转换算法，将所述目标显示面板的像素点的第二亮度值转换为所述第二灰阶数据。
  11. 根据权利要求1所述的方法，在所述获取所述目标显示面板的第一灰阶数据和第二灰阶数据之前，还包括：
    获取多个Mura等级的多个显示面板，对所述多个显示面板分别进行补偿测试，得到所述多个显示面板的所述补偿查找表；
    根据所述显示面板与所述Mura等级的对应关系，建立所述Mura等级与所述补偿查找表的对应关系。
  12. 根据权利要求1所述的方法，在所述确定目标补偿查找表之后，还包括：
    将所述目标补偿查找表烧录至所述目标显示面板。
  13. 根据权利要求1所述的方法，其中，
    所述第一灰阶数据以矩阵形式存储，所述第一灰阶数据对应的矩阵中的每个元素为所述元素对应位置上的像素点在所述第一亮度下的所述目标灰阶的显示灰阶值；
    所述第二灰阶数据以矩阵形式存储，所述第二灰阶数据对应的矩阵中的每个元素为所述元素对应位置上的像素点在所述第二亮度下的所述目标灰阶的显示灰阶值。
  14. 根据权利要求1所述的方法，其中，所述根据所述第一灰阶数据 和所述第二灰阶数据中的至少一项，以及可调阈值范围，确定所述目标显示面板中的Mura像素点，包括：
    将所述第二亮度下所述目标灰阶的显示灰阶值超出所述可调阈值范围的像素点确定为所述Mura像素点；
    或者，
    将所述第一亮度下所述目标灰阶的显示灰阶值超出所述可调阈值范围的像素点和所述第二亮度下目标灰阶的显示灰阶值超出所述可调阈值范围的像素点的交集确定为所述Mura像素点。
  15. 根据权利要求2所述的方法，其中，所述基于所述Mura像素点对应的所述第一灰阶数据，利用补偿算法，计算得到第一补偿灰阶值，包括：
    根据所述Mura像素点在所述第一亮度下的所述目标灰阶的显示灰阶值和所述目标灰阶，利用补偿算法，得到所述第一补偿灰阶值；
    或者，根据所述Mura像素点在所述第一亮度下的所述目标灰阶的显示灰阶值和对应的期望灰阶值，利用补偿算法，得到所述第一补偿灰阶值。
  16. 根据权利要求2所述的方法，其中，所述基于所述Mura像素点对应的所述第二灰阶数据，利用补偿算法，计算得到第二补偿灰阶值，包括：
    根据所述Mura像素点在所述第二亮度下的所述目标灰阶的显示灰阶值和所述目标灰阶，利用补偿算法，得到所述第二补偿灰阶值；
    或者，根据所述Mura像素点在所述第二亮度下的所述目标灰阶的显示灰阶值和对应的期望灰阶值，利用补偿算法，得到所述第二补偿灰阶值。
  17. 一种显示面板的Mura补偿方法，所述方法包括：
    获取所述显示面板的当前亮度；
    根据所述当前亮度，在目标补偿查找表中查找与所述当前亮度对应的补偿增益系数，所述目标补偿查找表设置有亮度与补偿增益系数的对应关系，所述目标补偿查找表为在多个Mura等级对应的多个补偿查找表中与 目标补偿增益系数匹配的补偿查找表，所述目标补偿增益系数基于所述显示面板中Mura像素点的第一灰阶数据和第二灰阶数据确定，所述Mura像素点根据所述第一灰阶数据、所述第二灰阶数据中的至少一项以及可调阈值范围确定，所述第一灰阶数据包括所述显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，所述第二灰阶数据包括所述显示面板各像素点在第二亮度下的所述目标灰阶的显示灰阶值，所述第二亮度不同于所述第一亮度；
    利用查找到的与所述当前亮度对应的补偿增益系数对所述显示面板进行补偿。
  18. 一种补偿查找表的配置装置，包括：
    数据获取模块，设置为获取目标显示面板的第一灰阶数据和第二灰阶数据，所述第一灰阶数据包括所述目标显示面板各像素点在第一亮度下的目标灰阶的显示灰阶值，所述第二灰阶数据包括所述目标显示面板各像素点在第二亮度下的目标灰阶的显示灰阶值，所述第二亮度不同于所述第一亮度；
    像素点确定模块，设置为根据所述第一灰阶数据和所述第二灰阶数据中的至少一项，以及可调阈值范围，确定所述目标显示面板中的Mura像素点，所述Mura像素点的显示灰阶值超出所述可调阈值范围；
    计算模块，设置为基于所述Mura像素点对应的所述第一灰阶数据和所述Mura像素点对应的所述第二灰阶数据，计算得到目标补偿增益系数，所述目标补偿增益系数为所述目标显示面板的显示在所述第二亮度下相对于所述第一亮度的补偿增益系数；
    确定模块，设置为在预设的与多个Mura等级对应的多个补偿查找表中，确定目标补偿查找表，所述补偿查找表设置有亮度与补偿增益系数的对应关系，所述目标补偿查找表与所述目标补偿增益系数匹配，设置为被调用对所述目标显示面板进行补偿。
PCT/CN2022/108307 2021-12-10 2022-07-27 补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置 WO2023103405A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020237029667A KR20230133388A (ko) 2021-12-10 2022-07-27 보상 룩업 테이블의 구성 방법, 표시 패널의 보상 방법 및 보상 룩업 테이블의 구성 장치
US18/468,938 US12106727B2 (en) 2021-12-10 2023-09-18 Method for configuring compensation look-up table, method for compensating display panel, apparatus for configuring compensation look-up table

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111510627.8 2021-12-10
CN202111510627.8A CN114203087B (zh) 2021-12-10 2021-12-10 补偿查找表的配置、补偿方法、装置、设备及存储介质

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/468,938 Continuation US12106727B2 (en) 2021-12-10 2023-09-18 Method for configuring compensation look-up table, method for compensating display panel, apparatus for configuring compensation look-up table

Publications (1)

Publication Number Publication Date
WO2023103405A1 true WO2023103405A1 (zh) 2023-06-15

Family

ID=80652490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/108307 WO2023103405A1 (zh) 2021-12-10 2022-07-27 补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置

Country Status (5)

Country Link
US (1) US12106727B2 (zh)
KR (1) KR20230133388A (zh)
CN (1) CN114203087B (zh)
TW (1) TWI820851B (zh)
WO (1) WO2023103405A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114203087B (zh) 2021-12-10 2023-03-24 昆山国显光电有限公司 补偿查找表的配置、补偿方法、装置、设备及存储介质
CN114639342A (zh) * 2022-04-25 2022-06-17 北京欧铼德微电子技术有限公司 显示面板的亮度控制方法及装置、显示设备、电子设备
US20240312385A1 (en) * 2022-04-28 2024-09-19 Chengdu Boe Optoelectronics Technology Co., Ltd. Method and apparatus for compensating for brightness of display panel, display device, and storage medium
CN115083328B (zh) * 2022-06-28 2023-10-03 昆山国显光电有限公司 显示补偿方法、装置、设备、介质及显示装置
CN118173053A (zh) * 2022-12-08 2024-06-11 昆山国显光电有限公司 显示面板的亮度改善方法、装置、设备及存储介质
CN117116207B (zh) * 2023-04-28 2024-07-05 荣耀终端有限公司 一种灰阶补偿方法及系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150042697A1 (en) * 2013-08-12 2015-02-12 Samsung Display Co., Ltd. Organic light emitting display device and method of adjusting luminance of the same
CN106847157A (zh) * 2017-03-24 2017-06-13 上海天马有机发光显示技术有限公司 一种显示面板的亮度补偿方法及装置
CN107221290A (zh) * 2017-08-01 2017-09-29 芯颖科技有限公司 mura补偿显示方法及装置、计算机可读存储介质
CN108877740A (zh) * 2018-07-25 2018-11-23 昆山国显光电有限公司 获取Mura补偿数据的方法、装置、计算机设备及存储介质
CN111243512A (zh) * 2020-02-28 2020-06-05 昆山国显光电有限公司 一种灰阶数据补偿方法、装置和驱动芯片
CN112530347A (zh) * 2020-12-11 2021-03-19 昆山工研院新型平板显示技术中心有限公司 补偿灰阶确定方法、装置及设备
CN113314062A (zh) * 2020-02-26 2021-08-27 三星电子株式会社 显示驱动电路及其操作方法、mura检查装置的操作方法
CN114203087A (zh) * 2021-12-10 2022-03-18 昆山国显光电有限公司 补偿查找表的配置、补偿方法、装置、设备及存储介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI294617B (en) * 2005-05-13 2008-03-11 Benq Corp Apparatus for adjusting brightness and method of the same
TWI404046B (zh) * 2008-04-28 2013-08-01 Au Optronics Corp 伽碼曲線補償方法、伽碼曲線補償電路以及顯示系統
KR102181881B1 (ko) * 2014-11-21 2020-11-24 삼성디스플레이 주식회사 비전 검사 장치 및 이의 감마 및 얼룩 보정 방법
TWI709122B (zh) * 2015-08-25 2020-11-01 南韓商三星電子股份有限公司 時序控制器及包含該時序控制器的顯示裝置
US10242649B2 (en) * 2016-09-23 2019-03-26 Apple Inc. Reduced footprint pixel response correction systems and methods
CN106898286B (zh) * 2017-03-15 2020-07-03 武汉精测电子集团股份有限公司 基于指定位置的Mura缺陷修复方法及装置
CN106898327B (zh) * 2017-05-03 2019-11-05 深圳市华星光电技术有限公司 一种显示面板的mura现象补偿方法及显示面板
CN107799084B (zh) * 2017-11-21 2019-11-22 武汉华星光电半导体显示技术有限公司 亮度补偿的装置及方法、存储器
US10553138B2 (en) * 2018-04-18 2020-02-04 Solomon Systech (Shenzhen) Limited System and method of an adaptive driving compensation for enhancing display uniformity
US11113818B1 (en) * 2020-02-25 2021-09-07 Himax Technologies Limited Timing controller and operating method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150042697A1 (en) * 2013-08-12 2015-02-12 Samsung Display Co., Ltd. Organic light emitting display device and method of adjusting luminance of the same
CN106847157A (zh) * 2017-03-24 2017-06-13 上海天马有机发光显示技术有限公司 一种显示面板的亮度补偿方法及装置
CN107221290A (zh) * 2017-08-01 2017-09-29 芯颖科技有限公司 mura补偿显示方法及装置、计算机可读存储介质
CN108877740A (zh) * 2018-07-25 2018-11-23 昆山国显光电有限公司 获取Mura补偿数据的方法、装置、计算机设备及存储介质
CN113314062A (zh) * 2020-02-26 2021-08-27 三星电子株式会社 显示驱动电路及其操作方法、mura检查装置的操作方法
CN111243512A (zh) * 2020-02-28 2020-06-05 昆山国显光电有限公司 一种灰阶数据补偿方法、装置和驱动芯片
CN112530347A (zh) * 2020-12-11 2021-03-19 昆山工研院新型平板显示技术中心有限公司 补偿灰阶确定方法、装置及设备
CN114203087A (zh) * 2021-12-10 2022-03-18 昆山国显光电有限公司 补偿查找表的配置、补偿方法、装置、设备及存储介质

Also Published As

Publication number Publication date
KR20230133388A (ko) 2023-09-19
TWI820851B (zh) 2023-11-01
CN114203087B (zh) 2023-03-24
TW202303579A (zh) 2023-01-16
US12106727B2 (en) 2024-10-01
US20240005887A1 (en) 2024-01-04
CN114203087A (zh) 2022-03-18

Similar Documents

Publication Publication Date Title
WO2023103405A1 (zh) 补偿查找表的配置方法、显示面板的补偿方法及补偿查找表的配置装置
CN109979401B (zh) 驱动方法、驱动装置、显示设备和计算机可读介质
CN112530347B (zh) 补偿灰阶确定方法、装置及设备
CN113823235B (zh) 一种Mini-LED背光分区控制系统及方法
CN108022223B (zh) 一种基于对数映射函数分块处理融合的色调映射方法
CN107346653B (zh) 一种基于深度学习的gamma曲线调校方法及装置
EP3451653B1 (en) Image processing method, image processing apparatus and display device
CN108364271B (zh) 一种图像对比度的提高方法和装置
CN103353982A (zh) 一种基于直方图均衡化的色调映射方法
CN109686342B (zh) 一种图像处理方法及装置
WO2022247211A1 (zh) Gamma调试方法、装置及设备
CN109982012B (zh) 图像处理方法及装置、存储介质、终端
CN109817170A (zh) 像素补偿方法、装置和终端设备
CN109903294A (zh) 图像处理方法、装置、电子设备及可读存储介质
CN115083328B (zh) 显示补偿方法、装置、设备、介质及显示装置
WO2023040431A1 (zh) 一种色调映射方法、设备及系统
CN116092423A (zh) 一种显示面板色彩校正方法及装置
WO2017113620A1 (zh) 高动态范围图像处理方法及系统
CN116959381A (zh) 图像增强显示的方法、显示设备及电子设备
CN105072427B (zh) 一种多投影仪之间的自动色彩平衡方法
CN116489330A (zh) 一种自适应白平衡方法、装置、电子设备及存储介质
CN109119046B (zh) 灰阶亮度的调节系统及调节方法、存储器
CN106408535B (zh) 一种基于子行驱动灰度调制显示系统的图像增强方法
CN111739480A (zh) 面板均匀性校正方法
US20240119573A1 (en) Image processing apparatus, image processing method and computer-readable storage medium for direct memory accesses

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: 22902840

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20237029667

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE