WO2022022000A1 - 亮度补偿参数确定方法、装置及设备 - Google Patents

亮度补偿参数确定方法、装置及设备 Download PDF

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Publication number
WO2022022000A1
WO2022022000A1 PCT/CN2021/093260 CN2021093260W WO2022022000A1 WO 2022022000 A1 WO2022022000 A1 WO 2022022000A1 CN 2021093260 W CN2021093260 W CN 2021093260W WO 2022022000 A1 WO2022022000 A1 WO 2022022000A1
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Prior art keywords
value
brightness
luminance
sub
display panel
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PCT/CN2021/093260
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English (en)
French (fr)
Inventor
陈�峰
楼均辉
高孝裕
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昆山工研院新型平板显示技术中心有限公司
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Publication of WO2022022000A1 publication Critical patent/WO2022022000A1/zh
Priority to US17/984,659 priority Critical patent/US11881145B2/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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 relates to the field of display technology, and in particular, to a method, device and device for determining a brightness compensation parameter.
  • the design of the under-screen camera has appeared, and the display brightness of the area corresponding to the camera is inconsistent with the display brightness of the conventional display area of the display screen. Therefore, it is necessary to perform brightness compensation on each display area of the display screen.
  • the brightness of the display screen at each gray-scale binding point is usually collected by a brightness acquisition device.
  • the brightness data collected at some gray-scale binding points has the problem of distortion, which in turn affects the compensation effect of the display screen. .
  • an embodiment of the present application provides a method for determining a brightness compensation parameter, which is used to determine a brightness compensation parameter of a display panel to be compensated, and the display panel to be compensated has a first display area and a second display area, wherein the method includes: : At any gray scale, obtain the first luminance acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and the second sub-pixels of the target color in the second display area the second luminance collection value; determine whether the collection ratio of the average value of the plurality of first luminance collection values and the average value of the plurality of second luminance collection values is within the standard range; wherein, the standard range is determined according to the sample display panel; if If the acquisition ratio is not within the standard range, then at least one of the first brightness acquisition value and the second brightness acquisition value is corrected, so that the corrected average brightness of the first sub-pixels of the target color is greater than that of the target color.
  • the correction ratio of the average brightness of the second sub-pixels is within the standard range, so as to obtain the brightness correction value of the display panel to be compensated.
  • the brightness correction value includes the first brightness correction value of the first subpixel and the second brightness correction value of the second subpixel. At least one of the brightness correction values; the brightness correction value is used as the display brightness value of the display panel to be compensated, and the brightness compensation parameter of the display panel to be compensated is determined based on the brightness correction value.
  • an embodiment of the present application provides a brightness compensation parameter determination device for determining brightness compensation parameters of a display panel to be compensated, the display panel to be compensated has a first display area and a second display area, and the device includes: a brightness acquisition module , which is used to obtain the first luminance acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and multiple second sub-pixels of the target color in the second display area under any grayscale The second brightness collection value of the Determined by the display panel; a correction module, configured to correct at least one of the first brightness acquisition value and the second brightness acquisition value if the acquisition ratio is not within the standard range, so that the corrected target color has a plurality of first brightness values.
  • the correction ratio between the average brightness of the sub-pixels and the average brightness of the second sub-pixels of the target color is within the standard range, so as to obtain the brightness correction value of the display panel to be compensated, and the brightness correction value includes the first sub-pixel of the first sub-pixel. at least one of the brightness correction value and the second brightness correction value of the second sub-pixel; the compensation parameter determination module is configured to use the brightness correction value as the display brightness value of the display panel to be compensated, and determine the display to be compensated based on the brightness correction value Brightness compensation parameters of the panel.
  • the compensation parameter determination module is specifically configured to: determine the first average brightness value of the first display area according to the first corrected brightness value of each first sub-pixel; The second brightness collection value of the pixel determines the second average brightness value of the second display area; in the corresponding relationship between the brightness value and the grayscale value of the display panel to be compensated, the first grayscale value corresponding to the first average brightness value is determined and a second grayscale value corresponding to the second average luminance value; the difference between the second grayscale value and the first grayscale value is used as the compensated grayscale value of the first sub-pixel.
  • embodiments of the present application provide a device for determining brightness compensation parameters, including a processor, a memory, and a computer program stored in the memory and running on the processor, the computer program being executed by the processor to implement the first aspect.
  • the brightness compensation parameter determination method in the technical solution.
  • Embodiments of the present application provide a method, apparatus, and device for determining brightness compensation parameters. After correcting at least one of a first brightness collection value and a second brightness collection value, The correction ratio between the average brightness of the pixel and the average brightness of the second sub-pixels of the multiple target colors is within the standard range, and the brightness correction value is obtained, and the brightness compensation parameter of the display panel to be compensated is determined based on the brightness correction value.
  • the brightness correction value It is more in line with the actual display situation of the display panel to be compensated, that is, according to the embodiment of the present application, the problem of distortion of the first brightness collection value and/or the second brightness collection value collected due to the instability of the brightness collection device can be avoided, and a reasonable use of
  • the brightness correction value of the display panel to be compensated is determined to determine the brightness compensation parameter of the display panel to be compensated, so as to improve the compensation effect on the display panel and further improve the display uniformity of the display panel.
  • FIG. 1 is a schematic diagram of an example of a display panel according to an embodiment of the application.
  • FIG. 2 is a schematic flowchart of a method for determining a brightness compensation parameter provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of luminance ratios corresponding to sub-pixels of each color of a sample display panel whose compensation effect satisfies the conditions provided by the embodiment of the present application;
  • FIG. 4 is a schematic diagram of luminance ratios corresponding to sub-pixels of each color of a sample display panel provided by an embodiment of the present application whose compensation effect does not satisfy the condition;
  • FIG. 5 is a schematic diagram of acquisition ratios and correction ratios corresponding to blue sub-pixels in a display panel according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of luminance ratios of sub-pixels of each color of a display panel before and after correction according to an embodiment of the present application
  • FIG. 7 is a schematic structural diagram of an example of an apparatus for determining a brightness compensation parameter provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another example of a device for determining brightness compensation parameters provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a device for determining a brightness compensation parameter provided by an embodiment of the present application.
  • the display panel in the embodiment of the present application may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, or a liquid crystal display panel, which is not limited herein.
  • OLED Organic Light Emitting Diode
  • FIG. 1 is a schematic diagram of an example of a display panel according to an embodiment of the present application.
  • the display panel has a first display area A11 and a second display area A12.
  • the light transmittance of the first display area A11 is greater than that of the second display area A12.
  • the first display area A11 is the above-mentioned transparent display area, which can be regarded as a sub-screen area of the display panel.
  • the second display area A12 can be regarded as the main screen area of the display panel.
  • the light transmittance of the first display area A11 is greater than or equal to 15%. In order to ensure that the transmittance of the first display area A11 is greater than 15%, or even greater than 40%, or even has a higher transmittance, the transmittance of each functional film layer of the display panel in this embodiment may be greater than 80%, or even The light transmittances of at least part of the functional film layers are all greater than 90%.
  • the first display area may include first sub-pixels of at least three colors.
  • the first display area may include a red first subpixel, a blue first subpixel, and a green first subpixel.
  • the second display area may include second sub-pixels of at least three colors.
  • the second display area may include a red second subpixel, a blue second subpixel, and a green second subpixel.
  • Photosensitive components may be integrated on the back of the first display area A11 of the display panel according to the embodiment of the present application, so as to realize under-screen integration of photosensitive components such as cameras.
  • the first display area A11 can also display images, which increases the display area of the display panel and realizes a full-screen design of the display device.
  • the pixel density and driving circuit structure design in the first display area A11 are different from those in the second display area A12. Due to the difference between the first display area A11 and the second display area A12, the visual brightness of the first display area A11 and the visual brightness of the second display area A12 are different.
  • the visual brightness of the first display area A11 refers to the brightness of the first display area A11 perceived by human eyes.
  • the visual brightness of the second display area A12 refers to the brightness of the second display area A11 perceived by human eyes.
  • Demura compensation can be performed on the display panel to reduce the difference in visual brightness between the first display area A11 and the second display area A12 and improve the display effect.
  • Demura compensation it is necessary to use an image acquisition device to collect the brightness data of the first display area A11 and the second display area A12 of the display panel at different gray scales, and then perform Demura on the display panel according to the brightness data collected by the image acquisition device. compensate.
  • the brightness collected by the image acquisition device is not the actual display brightness of the display panel, that is, the brightness data collected by the image acquisition device is distorted.
  • the compensation parameter determined according to the distorted brightness data , and performing Demura compensation on the display panel will lead to a decrease in the compensation effect, or even a deterioration of the compensation effect.
  • the embodiments of the present application provide a method, device and device for determining brightness compensation parameters.
  • the following will describe various embodiments of the method, device and device for determining brightness compensation parameters with reference to the accompanying drawings.
  • FIG. 2 is a flowchart of an example of a method for determining a brightness compensation parameter provided by an embodiment of the present application.
  • the brightness compensation parameter determination method may include steps 201 to 204 .
  • Step 201 at any gray scale, obtain the first luminance acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and multiple second sub-pixels of the target color in the second display area.
  • the second luminance acquisition value of the pixel at any gray scale, obtain the first luminance acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and multiple second sub-pixels of the target color in the second display area.
  • Step 202 judging whether the collection ratio of the average value of the plurality of first luminance collection values and the average value of the plurality of second luminance collection values is within a standard range.
  • the standard range is determined according to the sample display panel.
  • Step 203 If the acquisition ratio is not within the standard range, correct at least one of the first brightness acquisition value and the second brightness acquisition value, so that the corrected brightness average value of the first sub-pixels of the target color is the same as that of the first sub-pixel.
  • the correction ratio of the brightness average values of the second sub-pixels of the target color is within the standard range, so as to obtain the brightness correction value of the display panel to be compensated, and the brightness correction value includes the first brightness correction value of the first sub-pixel and the second sub-pixel brightness correction value. at least one of the second luminance correction values for the pixel.
  • Step 204 taking the brightness correction value as the display brightness value of the display panel to be compensated, and determining the brightness compensation parameter of the display panel to be compensated based on the brightness correction value.
  • the average luminance values of the corrected first sub-pixels of the target color are The correction ratio of the brightness average value of the second sub-pixel is within the standard range, the brightness correction value is obtained, and the brightness compensation parameter of the display panel to be compensated is determined based on the brightness correction value, and the brightness correction value is more in line with the actual display condition of the display panel to be compensated, That is, according to the embodiments of the present application, it is possible to avoid the problem of distortion of the collected first luminance collection value and/or the second luminance collection value due to the instability of the luminance collection device, and furthermore, a reasonable luminance correction value can be used to determine the luminance of the display panel to be compensated
  • the compensation parameter is used to improve the compensation effect on the display panel, thereby improving the display uniformity of the display panel.
  • any grayscale may be any grayscale that can be displayed by the display panel.
  • the gray scale range that the display panel can display is 0-255, and any gray scale can be any value from 0-255.
  • the compensation parameters corresponding to some specified grayscale binding points may be determined first, and then the compensation parameters corresponding to grayscales other than the grayscale binding points may be determined by using a linear interpolation method.
  • any grayscale may be any one of 32 grayscales, 64 grayscales, 96 grayscales, 128 grayscales, 160 grayscales, 192 grayscales, 224 grayscales, and 255 grayscales.
  • any grayscale is hereinafter referred to as the first grayscale, and it should be understood that the first grayscale may be any grayscale value.
  • a first grayscale picture may be input to the display panel to be compensated to light up the display panel to be compensated.
  • the image acquisition device installed on the machine can be used to photograph the display panel to be compensated, so as to collect luminance data of the display panel to be compensated, and generate CSV data.
  • the image acquisition device may be a high-resolution and high-precision camera such as a charge-coupled device (Charge Coupled Device, CCD) camera.
  • CCD Charge Coupled Device
  • Luminance acquisition value Part of the display area of the display panel to be compensated may also be photographed, that is, the photographed area may include the entire first display area and part of the second display area, or the photographed area may include part of the first display area and part of the second display area. Obtain the first luminance acquisition values of the first sub-pixels of all target colors in the first display area under the first gray scale, and the second sub-pixels of some target colors in the second display area under the first gray scale. Luminance acquisition value.
  • Part of the second display area may select the area around the first display area, which is not limited herein.
  • the first luminance collection value and the second luminance collection value refer to the luminance values collected by the image collection device. Due to the instability of the image collection device, the first luminance collection value and the second luminance collection value are different from those actually displayed on the display panel. Brightness may vary.
  • the CSV data may include the first luminance acquisition value of the first sub-pixel of the target color at the first gray scale in the photographed area of the display panel to be compensated, and the second luminance of the second sub-pixel of the target color at the first gray scale Collect value.
  • the CSV data can be specifically implemented as a CSV data file, that is, the CSV data file stores the first luminance acquisition value of the first sub-pixel of the target color in the photographed area of the display panel under the first gray scale and the second sub-pixel of the target color. The second luminance acquisition value of the pixel at the first grayscale.
  • the CapRas_032_B.CSV file stores the first luminance acquisition value of the first blue subpixel in the photographed area of the display panel at grayscale 32 and the second blue subpixel in the photographed area at grayscale 32 The second luminance acquisition value under.
  • the CapRas_224_R.CSV file stores the first luminance acquisition value of the first red sub-pixel in the photographed area of the display panel to be compensated at the gray level 224 and the second red sub-pixel in the photographed area at the gray level. The second luminance acquisition value at 224.
  • the first luminance acquisition value of the first sub-pixel of the target color of the first display area of the display panel to be compensated at the first gray scale and the first luminance acquisition value of the target color of the second display area of the display panel to be compensated The second luminance collection value of the two sub-pixels at the first gray scale can be obtained by photographing the display panel twice, which is not limited herein.
  • the first luminance acquisition values of multiple first sub-pixels of the target color in the first display area at the first gray scale obtained by photographing the display panel to be compensated for the first time can be correspondingly obtained in the first display area in the first The corresponding CSV data in grayscale.
  • different exposure factors can be used.
  • the first sub-pixel of the target color may be a first sub-pixel of one color among at least three colors in the first display area.
  • the second sub-pixel of the target color may be a second sub-pixel of one of the at least three colors in the second display area.
  • the color of the first sub-pixel corresponding to the first luminance collection value adopted in step 202 is the same as the color of the second sub-pixel corresponding to the adopted second luminance collection value.
  • the acquisition ratio corresponding to the sub-pixels of each color can be obtained according to the first sub-pixel and the second sub-pixel of each color.
  • the acquisition ratio is the quotient of the average value of the plurality of first luminance acquisition values and the average value of the plurality of luminance acquisition values.
  • k_r1 Ave_Local_r1/Ave_main_r1
  • k_r1 is the acquisition ratio at the first gray scale corresponding to the display panel to be compensated and the red sub-pixel
  • Ave_Local_r1 is the first red sub-pixel in the first display area of the display panel to be compensated
  • Ave_main_r1 is the average value of the second luminance collection value of the second red sub-pixel at the first gray scale in the second display area of the display panel to be compensated .
  • k_b1 Ave_Local_b1/Ave_main_b1
  • k_b1 is the acquisition ratio at the first gray scale corresponding to the display panel to be compensated and the blue sub-pixel
  • Ave_Local_b1 is the blue pixel in the first display area of the display panel to be compensated
  • Ave_main_b1 is the second luminance collection at the first grayscale of the blue second subpixel in the second display area of the display panel to be compensated the average of the values.
  • k_g1 Ave_Local_g1/Ave_main_g1
  • k_g1 is the acquisition ratio of the display panel to be compensated and the green sub-pixel corresponding to the first grayscale
  • Ave_Local_g1 is the first green color in the first display area of the display panel to be compensated
  • Ave_main_g1 is the average of the second luminance collection values of the green second sub-pixels at the first gray scale in the second display area of the display panel to be compensated value.
  • the method for determining brightness compensation parameters may further include: determining the coverage of the preset compensation algorithm based on a sample display panel of the same model as the display panel to be compensated, and using the coverage of the preset compensation algorithm as Standard range.
  • the same model of the display panel to be compensated and the sample display panel may mean that the two have the same structure, the same size, and the same resolution. For example, both may be display panels produced in the same batch.
  • the process of compensating the display panel includes compensating for the brightness difference between the first display area and the second display area of the display panel, so that the display brightness of the first display area and the second display area of the display panel are consistent.
  • the inventors of the present application have found that, no matter in any gray scale, there is an ideal standard for the acquisition ratio of the average value of a plurality of first luminance acquisition values acquired by an image acquisition device to the average value of a plurality of second luminance acquisition values If the acquisition ratio is within the standard range, the compensation parameter of the display panel is directly determined based on the first luminance collection value and the second luminance collection value, and the compensation effect using the compensation parameter is ideal. If the acquisition ratio is not within the standard range, if the compensation parameter of the display panel is directly determined based on the first luminance collection value and the second luminance collection value, the compensation effect by using the compensation parameter is not ideal, and even causes transition compensation.
  • the image acquisition device may be used for multiple times to collect the first luminance values of multiple first sub-pixels of the target color in the first display area of the sample display panel under the first gray scale, and the first luminance values in the second display area.
  • Second luminance values of multiple second sub-pixels of the target color at the first gray scale after each collection of luminance values, a preset compensation algorithm is used to determine the sample display panel based on the collected first luminance values and second luminance values
  • the sample display panel is compensated, and the compensation effect of each time is compared. Calculate the ratio of the average value of the first brightness value to the average value of the second brightness value when the compensation effect is ideal, and take the range of the ratio corresponding to the ideal compensation effect as the coverage of the preset compensation algorithm, That is, the standard range.
  • the preset compensation algorithm may be any compensation algorithm, which is not limited in this application.
  • the standard ranges corresponding to the sub-pixels of each color may be different, which is not limited in this application.
  • the standard range corresponding to the red sub-pixel may be 2.25-2.65
  • the standard range corresponding to the green sub-pixel may be 2.4-2.8
  • the standard range corresponding to the blue sub-pixel may be 3.0-3.4.
  • FIG. 3 is a schematic diagram of luminance ratios corresponding to sub-pixels of each color of a sample display panel whose compensation effect satisfies the conditions provided by an embodiment of the present application.
  • the abscissa represents the grayscale value
  • the ordinate represents the ratio of the luminance average value of the target color subpixels in the first display area to the luminance average value of the target color subpixels in the second display area.
  • the ratio of the average brightness of the red sub-pixels in the first display area to the average brightness of the red sub-pixels in the second display area obtained based on the brightness data obtained by the image acquisition device is in the corresponding value of the red sub-pixels.
  • the ratio of the average brightness of the green sub-pixels in the first display area to the average brightness of the green sub-pixels in the second display area obtained based on the brightness data obtained by the image acquisition device is also within the standard corresponding to the green sub-pixels
  • the ratio of the average brightness of the blue sub-pixels in the first display area to the average brightness of the blue sub-pixels in the second display area, which is obtained based on the brightness data obtained by the image acquisition device, also corresponds to the blue sub-pixels. within the standard range. That is, the ratio of the average brightness of the target color sub-pixels in the first display area collected by the image acquisition device to the average brightness of the target color sub-pixels in the second display area is within the standard range, and the corresponding compensation effect is ideal.
  • FIG. 4 is a schematic diagram of luminance ratios corresponding to sub-pixels of each color of a sample display panel provided by an embodiment of the present application whose compensation effect does not satisfy the condition.
  • the abscissa represents the grayscale value
  • the ordinate represents the ratio of the luminance average value of the target color subpixels in the first display area to the luminance average value of the target color subpixels in the second display area.
  • the ratio of the average brightness of the red sub-pixels in the first display area to the average brightness of the red sub-pixels in the second display area obtained based on the brightness data obtained by the image acquisition device is not in the corresponding value of the red sub-pixels.
  • the ratio of the average brightness of the green sub-pixels in the first display area to the average brightness of the green sub-pixels in the second display area obtained based on the brightness data obtained by the image acquisition device at a partial grayscale is not in the green sub-pixels.
  • the ratio of the average brightness of the blue sub-pixels in the first display area and the average brightness of the blue sub-pixels in the second display area obtained based on the brightness data obtained by the image acquisition device is not in the blue.
  • the color sub-pixel corresponds to the standard range.
  • the ratio of the average brightness of the target color sub-pixels in the first display area collected by the image acquisition device to the average brightness of the target color sub-pixels in the second display area is generally lower than the standard range.
  • the first display area is over compensated, thereby causing the brightness consistency of the first display area and the second display area to deteriorate.
  • step 203 if the collection ratio is not within the standard range, at least one of the first luminance collection value and the second luminance collection value may be corrected.
  • the luminance correction value includes the first luminance correction value of the first sub-pixel.
  • the second luminance collection value collected by the image collection device may be corrected, that is, the luminance correction value includes the second luminance correction value of the second sub-pixel.
  • both the first luminance collection value and the second luminance collection value collected by the image collection device may be corrected, that is, the luminance correction value includes the first luminance correction value of the first sub-pixel and the second luminance correction value of the second sub-pixel. value.
  • the pixel density of the first display area may be smaller than the pixel density of the second display area.
  • the area of the first display area is also smaller than that of the second display area. Therefore, the number of sub-pixels in the first display area is much smaller than the number of sub-pixels in the second display area. Therefore, only the first luminance acquisition value acquired by the image acquisition device can be corrected.
  • step 203 may specifically include: multiplying a plurality of first luminance collection values by a correction coefficient to obtain a plurality of first corrected luminance values, so that the average value of the plurality of first corrected luminance values is equal to the plurality of second luminances.
  • the corrected ratio of the mean of the acquired values is within the standard range. In this way, the amount of calculation can be reduced and the efficiency can be improved.
  • the correction coefficient may be a value greater than 1; if the acquisition ratio at the first gray level is greater than the maximum value of the standard range, the correction coefficient may be a value less than 1 .
  • the luminance may be determined directly based on the first luminance collection value and the second luminance collection value Compensate parameters and compensate for the difference in brightness between the first display area and the second display area.
  • the method for determining luminance compensation parameters may further include: according to The degree to which the acquisition ratio deviates from the standard range is used to determine the correction factor. In this way, the correction coefficient can be prevented from being too large or too small, and thus the corrected first luminance acquisition value can be prevented from being too large or too small.
  • the image acquisition device may be used to collect the first luminance values of the first sub-pixels of multiple target colors in the first display area of the sample display panel at the first gray scale, and the multiple target colors in the second display area.
  • the second luminance value of the second sub-pixel under the first grayscale, and the ratio of the average value of the first luminance value to the average value of the second luminance value is not within the standard range, the following ratio will not be within the standard range called the sample ratio. Calculate how far the sample ratio deviates from the standard range.
  • the difference between the sample ratio and the central value of the standard range may be used as the degree of deviation; or, if the sample ratio is greater than the maximum value of the standard range, the difference between the sample ratio and the maximum value of the standard range may be used as the degree of deviation; or, The sample ratio is less than the minimum value of the standard range, and the difference between the minimum value of the standard range and the sample ratio is used as the degree of deviation, which is not limited in this application.
  • different correction coefficients can be set for the same degree of deviation, and the first brightness value can be corrected based on the different correction coefficients, and the compensation effect based on each corrected first brightness value can be analyzed. The corresponding correction coefficient is used as the final correction coefficient.
  • the respective correction coefficients corresponding to each deviation degree can be set according to the above method, and the corresponding relationship between each deviation degree and the correction coefficient can be stored in advance; it is also possible to set a plurality of deviation ranges and the corresponding correction coefficients of each deviation range, and pre-store the corresponding relationship between each deviation degree and the correction coefficient.
  • the correspondence between each deviation range and the correction coefficient is stored. Therefore, in the actual determination process of the brightness compensation parameter, the corresponding correction coefficient can be searched in the pre-stored correspondence according to the degree of deviation of the acquisition ratio from the standard range.
  • the step of determining the correction coefficient may specifically include: obtaining an intervention range; wherein, the intervention range is the same as the central value of the standard range, and the intervention range is greater than the standard range; The first deviation value is determined according to the difference between the intervention range and the acquisition ratio; the correction coefficient is determined according to the relationship between the first deviation value and the intervention range.
  • the intervention range can be understood as the upper limit of the range that can be covered by the preset compensation algorithm. If the acquisition ratio is within the intervention range and not within the standard range, the first display is directly compensated based on the first luminance collection value and the second luminance collection value. The brightness difference between the display area and the second display area can achieve a certain compensation effect, but the compensation effect is not ideal.
  • the intervention range may be determined based on a sample display panel.
  • the image acquisition device may be used to collect the first luminance values of multiple first sub-pixels of the target color in the first display area of the sample display panel at the first gray scale, and the target color in the second display area.
  • the second luminance values of the plurality of second sub-pixels under the first grayscale after each collection of luminance values, a preset compensation algorithm is used to compensate the sample display panel based on the collected first luminance values and second luminance values , and compare the compensation effect of each time.
  • Intervention ranges corresponding to sub-pixels of different colors may be different, which is not limited in this application.
  • the standard range corresponding to the red sub-pixel is 2.25-2.65
  • the standard range corresponding to the green sub-pixel is 2.4-2.8
  • the standard range corresponding to the blue sub-pixel is 3.0-3.4 as an example
  • the intervention range corresponding to the red sub-pixel is It may be 1.95-2.95
  • the intervention range corresponding to the green sub-pixel may be 2.1-3.1
  • the intervention range corresponding to the blue sub-pixel may be 1.7-3.7.
  • the correction coefficient is determined according to formula (1):
  • the correction coefficient is determined according to formula (2):
  • the correction coefficient is determined according to formula (3):
  • ⁇ is the intervention coefficient
  • ( ⁇ - ⁇ , ⁇ + ⁇ ) is the standard range
  • ( ⁇ - ⁇ , ⁇ + ⁇ ) is the intervention range
  • ⁇ , ⁇ , ⁇ are all constants, and ⁇ >0, ⁇ > ⁇ ⁇ 0
  • ⁇ is the center value of the standard range and the intervention range
  • k is the acquisition ratio
  • step k is the first deviation value
  • step k
  • step ⁇ is the first deviation value mapped to the standard range the second deviation value within
  • step ideal is the ideal ratio
  • step ideal ⁇ + ⁇ -step ⁇ .
  • the value of ⁇ may be 0.2, and the value of ⁇ may be 0.5.
  • the value of ⁇ may be 2.45 for red sub-pixels, 2.6 for green sub-pixels, and 3.2 for blue sub-pixels.
  • the values of ⁇ , ⁇ , and ⁇ can be kept to three decimal places.
  • the value of ⁇ can be 3.208.
  • ⁇ , ⁇ and ⁇ can be determined according to actual conditions, which are not limited in this application.
  • FIG. 5 is a schematic diagram of acquisition ratios and correction ratios corresponding to blue sub-pixels in a display panel according to an embodiment of the present application.
  • the abscissa represents the grayscale value
  • the ordinate represents the ratio of the luminance average value of the target color subpixels in the first display area to the luminance average value of the target color subpixels in the second display area.
  • the luminance value of the display panel to be compensated is collected by a brightness acquisition device.
  • FIG. 5 a schematic diagram of the acquisition ratio as shown in Figure 5 is obtained.
  • the acquisition ratios at each grayscale are not within the standard range corresponding to the blue sub-pixel, and the first deviation value corresponding to each grayscale value is less than the minimum value of the intervention range, which can be calculated according to the above formula (3)
  • the correction coefficient is corrected, and the luminance value of each blue sub-pixel in the first display area in the display panel to be compensated is corrected based on the calculated correction coefficient, and the schematic diagram of the correction ratio shown in FIG. 5 is obtained.
  • the change trend of the correction ratio under each grayscale value is consistent with the change trend of the acquisition ratio.
  • the acquisition ratio in grayscale 64 is greater than the acquisition ratio in grayscale 32, and correspondingly, the correction ratio in grayscale 64 is also greater than the correction ratio in grayscale 32.
  • the acquisition ratio in grayscale 192 is smaller than the acquisition ratio in grayscale 160, and the correction ratio in grayscale 192 is also smaller than the correction ratio in grayscale 60.
  • FIG. 6 is a schematic diagram of luminance ratios of sub-pixels of each color of a display panel before and after correction according to an embodiment of the present application.
  • the abscissa represents the grayscale value
  • the ordinate represents the ratio of the luminance average value of the target color subpixels in the first display area to the luminance average value of the target color subpixels in the second display area.
  • the change trend of the correction ratio at each grayscale value corresponding to the red sub-pixel is consistent with the change trend of the acquisition ratio
  • the change trend of the correction ratio at each grayscale value corresponding to the green subpixel is consistent with the change trend of the acquisition ratio.
  • the change trend of the ratio is consistent, and the change trend of the correction ratio under each grayscale value corresponding to the blue sub-pixel is consistent with the change trend of the acquisition ratio.
  • the acquisition ratio under the partial grayscale value corresponding to the green sub-pixel is within the standard range corresponding to the green subpixel, therefore, the acquisition ratio under the partial grayscale value is not corrected.
  • the consistency of the change trend of the correction ratio and the change trend of the acquisition ratio under each grayscale value can be ensured, so as to avoid the problem of color shift in the corrected first display area.
  • determining the brightness compensation parameter of the display panel to be compensated based on the brightness correction value may include: determining the first brightness value of the first display area according to the first corrected brightness value of each first sub-pixel average brightness value; according to the second brightness collection value of each second sub-pixel, determine the second average brightness value of the second display area; in the corresponding relationship between the brightness value and the grayscale value of the display panel to be compensated, determine the first average brightness value
  • the first grayscale value corresponding to the luminance value and the second grayscale value corresponding to the second average luminance value; the difference between the second grayscale value and the first grayscale value is used as the compensation grayscale value of the first sub-pixel.
  • the number of sub-pixels in the first display area is usually much smaller than the number of sub-pixels in the second display area.
  • the second average brightness value of the second display area is determined as the target brightness value, and only the first display area in the first display area is determined.
  • the compensation parameters of sub-pixels can reduce the amount of calculation and improve the efficiency.
  • Embodiments of the present application further provide a device for determining a brightness compensation parameter.
  • the device for determining the brightness compensation parameter can be used for the display panel in the above-mentioned embodiment.
  • the brightness compensation parameter determination apparatus 300 may include a brightness acquisition module 301 , a determination module 302 , a correction module 303 and a compensation parameter determination module 304 .
  • the brightness acquisition module 301 can be used to acquire the first brightness acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and multiple first brightness values of the target color in the second display area under any gray scale.
  • the second luminance acquisition value of the two sub-pixels can be used to acquire the first brightness acquisition values of multiple first sub-pixels of the target color in the first display area of the display panel to be compensated, and multiple first brightness values of the target color in the second display area under any gray scale.
  • the judgment module 302 may be configured to judge whether the collection ratio of the average value of the plurality of first luminance collection values to the average value of the plurality of second luminance collection values is within a standard range. Among them, the standard range is determined according to the sample display panel.
  • the correction module 303 can be configured to correct at least one of the first luminance collection value and the second luminance collection value if the collection ratio is not within the standard range, so that the luminances of the corrected target color multiple first sub-pixels are averaged.
  • the correction ratio of the value to the brightness average value of multiple second sub-pixels of the target color is within the standard range, so as to obtain the brightness correction value of the display panel to be compensated.
  • the brightness correction value includes the first brightness correction value of the first subpixel and the first brightness correction value of the first subpixel. at least one of the second luminance correction values of the two subpixels.
  • the compensation parameter determination module 304 may be configured to use the brightness correction value as the display brightness value of the display panel to be compensated, and determine the brightness compensation parameter of the display panel to be compensated based on the brightness correction value.
  • the actual display situation of the display panel that is, according to the embodiment of the present application, the problem of distortion of the collected first luminance collection value and/or the second luminance collection value due to the instability of the luminance collection device can be avoided, and a reasonable luminance correction value can be used. to determine the brightness compensation parameters of the display panel to be compensated, so as to improve the compensation effect on the display panel and further improve the display uniformity of the display panel.
  • the correction module 303 may be specifically configured to multiply a plurality of first luminance collection values by a correction coefficient to obtain a plurality of first corrected luminance values, so that the average value of the plurality of first corrected luminance values is the same as that of the plurality of first luminance values.
  • the corrected ratio of the average of the two luminance acquisition values is within the standard range.
  • FIG. 8 is a schematic structural diagram of another example of an apparatus for determining a brightness compensation parameter provided by an embodiment of the present application.
  • the difference between FIG. 8 and FIG. 7 is that the luminance compensation parameter determination apparatus 300 shown in FIG. 8 may further include a correction coefficient determination module 305 .
  • the correction coefficient determination module 305 may be configured to determine the correction coefficient according to the degree to which the acquisition ratio deviates from the standard range.
  • the correction coefficient determination module 305 can be used to set the intervention range, so that the intervention range is the same as the center value of the standard range, and the intervention range is larger than the standard range; the first deviation value is determined according to the difference between the intervention range and the acquisition ratio ; Determine the correction coefficient according to the relationship between the first deviation value and the intervention range.
  • the correction coefficient determination module 305 may be configured to determine the correction coefficient according to the above formula (1) if the first deviation value is within the intervention range; if the first deviation value is greater than the maximum value of the intervention range, then according to the above formula (2) Determine the correction coefficient; if the first deviation value is less than the minimum value of the intervention range, then determine the correction coefficient according to the above formula (3).
  • the compensation parameter determination module 304 may be configured to determine the first average luminance value of the first display area according to the first corrected luminance value of each first sub-pixel; according to the second luminance acquisition value of each second sub-pixel , determine the second average brightness value of the second display area; in the corresponding relationship between the brightness value and the grayscale value of the display panel to be compensated, determine the first grayscale value corresponding to the first average brightness value and the second average brightness value corresponding to The second grayscale value of ; the difference between the second grayscale value and the first grayscale value is used as the compensation grayscale value of the first sub-pixel.
  • FIG. 9 is a schematic structural diagram of an example of a device for determining brightness compensation parameters provided by an embodiment of the present application.
  • the brightness compensation parameter determination apparatus 400 includes a memory 401 , a processor 402 , and a computer program stored on the memory 401 and executable on the processor 402 .
  • the processor 402 described above may include a central processing unit (CPU), or a specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • Memory 401 may include mass storage for data or instructions.
  • memory 401 may include an HDD, floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or universal serial bus (USB) drive, or a combination of two or more of these.
  • Memory 401 may include removable or non-removable (or fixed) media, where appropriate. In an appropriate case, the memory 401 may be inside or outside of the device 400 for determining brightness compensation parameters in the terminal hotspot.
  • memory 401 is non-volatile solid state memory.
  • memory 401 includes read only memory (ROM).
  • the ROM may be a mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically rewritable ROM (EAROM) or flash memory or A combination of two or more of the above.
  • PROM programmable ROM
  • EPROM erasable PROM
  • EEPROM electrically erasable PROM
  • EAROM electrically rewritable ROM
  • flash memory or A combination of two or more of the above.
  • the processor 402 runs a computer program corresponding to the executable program code by reading the executable program code stored in the memory 401, so as to implement the method for determining the brightness compensation parameter in the above-mentioned embodiment.
  • server 400 may also include communication interface 403 and bus 404 .
  • communication interface 403 and bus 404 .
  • the memory 401 , the processor 402 , and the communication interface 403 are connected through the bus 404 and complete the communication with each other.
  • the communication interface 403 is mainly used to implement communication between modules, apparatuses, 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 403 .
  • bus 404 includes hardware, software, or both, coupling the components of the luminance compensation parameter determination apparatus 400 to each other.
  • bus 404 may include Accelerated Graphics Port (AGP) or other graphics bus, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), HyperTransport (HT) interconnect, Industry Standard Architecture (ISA) ) bus, Infiniband Interconnect, Low Pin Count (LPC) bus, Memory Bus, Microchannel Architecture (MCA) bus, Peripheral Component Interconnect (PCI) bus, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or a combination of two or more of the above.
  • Bus 404 may include one or more buses, where appropriate. Although embodiments of this application describe and illustrate a particular bus, this application contemplates any suitable bus or interconnect.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for determining the brightness compensation parameter in the above-mentioned embodiment can be implemented, and can achieve The same technical effect, in order to avoid repetition, will not be repeated here.
  • the above-mentioned computer-readable storage medium may include read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), magnetic disk or optical disk, etc., which are not limited herein.

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Abstract

本申请公开了一种亮度补偿参数确定方法、装置及设备。该方法包括任意一个灰阶下、获取第一显示区中目标颜色的多个第一子像素的第一亮度采集值，以及第二显示区中目标颜色的多个第二子像素的第二亮度采集值；判断多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值是否在标准范围内；若否，则对第一亮度采集值和第二亮度采集值中的至少一者进行校正，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在标准范围内，以得到待补偿显示面板的亮度校正值；基于亮度校正值确定待补偿显示面板的亮度补偿参数。根据本申请实施例，能够提高显示面板的显示均一性。

Description

亮度补偿参数确定方法、装置及设备
相关申请的交叉引用
本申请要求享有于2020年07月29日提交的名称为“亮度补偿参数确定方法、装置及设备”的中国专利申请第202010747177.3号的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及显示技术领域，具体涉及一种亮度补偿参数确定方法、装置及设备。
背景技术
随着电子设备的快速发展，用户对屏占比的要求越来越高，使得电子设备的全面屏显示受到业界越来越多的关注。
目前出现了屏下摄像头的设计，摄像头对应的区域与显示屏的常规显示区域的显示亮度不一致，因此需要对显示屏的各显示区域进行亮度补偿。在亮度补偿过程中，通常利用亮度采集装置采集显示屏在各灰阶绑点下的亮度，然而采集的某些灰阶绑点下的亮度数据存在失真的问题，继而影响对显示屏的补偿效果。
发明内容
第一方面，本申请实施例提供一种亮度补偿参数确定方法，用于确定待补偿显示面板的亮度补偿参数，待补偿显示面板具有第一显示区和第二显示区，其特征在于，方法包括：任意一个灰阶下、获取待补偿显示面板的第一显示区中目标颜色的多个第一子像素的第一亮度采集值，以及第二显示区中目标颜色的多个第二子像素的第二亮度采集值；判断多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值是否在标准范围内；其中，标准范围是根据样本显示面板确定的；若采集比值不在标 准范围内，则对第一亮度采集值和第二亮度采集值中的至少一者进行校正，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在标准范围内，以得到待补偿显示面板的亮度校正值，亮度校正值包括第一子像素的第一亮度校正值和第二子像素的第二亮度校正值中的至少一者；将亮度校正值作为待补偿显示面板的显示亮度值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数。
第二方面，本申请实施例提供一种亮度补偿参数确定装置，用于确定待补偿显示面板的亮度补偿参数，待补偿显示面板具有第一显示区和第二显示区，装置包括：亮度获取模块，用于任意一个灰阶下、获取待补偿显示面板的第一显示区中目标颜色的多个第一子像素第一亮度采集值，以及第二显示区中目标颜色的多个第二子像素的第二亮度采集值；判断模块，用于判断多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值是否在标准范围内；其中，标准范围是根据样本显示面板确定的；校正模块，用于若采集比值不在标准范围内，则对第一亮度采集值和第二亮度采集值中的至少一者进行校正，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在标准范围内，以得到待补偿显示面板的亮度校正值，亮度校正值包括第一子像素的第一亮度校正值和第二子像素的第二亮度校正值中的至少一者；补偿参数确定模块，用于将亮度校正值作为待补偿显示面板的显示亮度值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数。
在第二方面一种可能的实施方式中，补偿参数确定模块具体用于：根据各第一子像素的第一校正亮度值，确定第一显示区的第一平均亮度值；根据各第二子像素的第二亮度采集值，确定第二显示区的第二平均亮度值；在待补偿显示面板的亮度值与灰阶值的对应关系中，确定第一平均亮度值对应的第一灰阶值以及第二平均亮度值对应的第二灰阶值；将第二灰阶值与第一灰阶值的差值，作为第一子像素的补偿灰阶值。
第三方面，本申请实施例提供一种亮度补偿参数确定设备，包括处理 器、存储器及存储在存储器上并可在处理器上运行的计算机程序，计算机程序被处理器执行时实现第一方面的技术方案中的亮度补偿参数确定方法。
本申请实施例提供一种亮度补偿参数确定方法、装置及设备，对第一亮度采集值和第二亮度采集值中的至少一者进行校正后，使校正后的多个目标颜色的第一子像素的亮度平均值与多个目标颜色的第二子像素的亮度平均值的校正比值在标准范围内，得到亮度校正值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数，亮度校正值更符合待补偿显示面板的实际显示情况，即根据本申请实施例能够避免由于亮度采集装置的不稳定导致采集的第一亮度采集值和/或第二亮度采集值失真的问题，进而能够利用合理的亮度校正值来确定待补偿显示面板亮度补偿参数，以提高对显示面板的补偿效果，进而提高显示面板的显示均一性。
附图说明
通过阅读以下参照附图对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显，其中，相同或相似的附图标记表示相同或相似的特征，附图并未按照实际的比例绘制。
图1为本申请一实施例中显示面板的一示例的示意图；
图2为本申请实施例提供的亮度补偿参数确定方法的流程示意图；
图3为本申请实施例提供的补偿效果满足条件的样本显示面板各颜色的子像素对应的亮度比值的示意图；
图4为本申请实施例提供的补偿效果不满足条件的样本显示面板各颜色的子像素对应的亮度比值的示意图；
图5为本申请实施例提供的显示面板中蓝色子像素对应的采集比值及校正比值的示意图；
图6为本申请实施例提供的显示面板各颜色的子像素校正前后的亮度比值的示意图；
图7为本申请实施例提供的亮度补偿参数确定装置的一示例的结构示意图；
图8为本申请实施例提供的亮度补偿参数确定装置的另一示例的结构 示意图；
图9为本申请实施例提供的亮度补偿参数确定设备的结构示意图。
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。
本申请实施例中的显示面板可以是有机发光二极管(Organic Light Emitting Diode，OLED)显示面板，或者液晶显示面板，在此并不限定。
图1为本申请一实施例中显示面板的一示例的示意图。如图1所示，该显示面板具有第一显示区A11和第二显示区A12。第一显示区A11的可以透光率大于第二显示区A12的透光率。第一显示区A11即为上述透明显示区，可视为显示面板的副屏区。第二显示区A12可视为显示面板的主屏区。
在一些示例中，第一显示区A11的透光率大于或等于15％。为确保第一显示区A11的透光率大于15％，甚至大于40％，甚至具有更高的透光率，本实施例中显示面板的各个功能膜层的透光率可大于80％，甚至至少部分功能膜层的透光率均大于90％。
第一显示区可包括至少三种颜色的第一子像素。例如，第一显示区可包括红色的第一子像素、蓝色的第一子像素和绿色的第一子像素。第二显示区可包括至少三种颜色的第二子像素。例如，第二显示区可包括红色的第二子像素、蓝色的第二子像素和绿色的第二子像素。
本申请实施例的显示面板的第一显示区A11背面可集成感光组件，实现例如摄像头等感光组件的屏下集成。第一显示区A11还能够显示图像，提高显示面板的显示面积，实现显示装置的全面屏设计。
为了保证第一显示区A11的透光率可以达到标准要求，第一显示区 A11中的像素密度、驱动电路结构设计与第二显示区A12中的像素密度、驱动电路结构设计上有所不同。由于第一显示区A11与第二显示区A12的不同，导致第一显示区A11的视觉亮度和第二显示区A12的视觉亮度有所差异。第一显示区A11的视觉亮度指人眼感受到的第一显示区A11的亮度。第二显示区A12的视觉亮度指人眼感受到的第二显示区A11的亮度。为了提高显示效果，可对显示面板进行Demura补偿，以减小第一显示区A11和第二显示区A12之间的视觉亮度上的差异，提高显示效果。
在Demura补偿过程中，需要利用图像采集设备来采集显示面板的第一显示区A11和第二显示区A12在不同灰阶下的亮度数据，然后根据图像采集设备采集的亮度数据对显示面板进行Demura补偿。然而，由于图像采集设备的不稳定性，存在图像采集设备采集的亮度并非是显示面板的实际显示亮度，即图像采集设备采集的亮度数据存在失真的情况，根据失真的亮度数据来确定的补偿参数，并对显示面板进行Demura补偿，会导致补偿效果下降，甚至导致补偿效果恶化。
为解决上述问题，本申请实施例提供了一种亮度补偿参数确定方法、装置及设备，以下将结合附图对亮度补偿参数确定方法、装置及设备的各个实施例进行说明。
本申请实施例提供了一种亮度补偿参数确定方法。图2为本申请实施例提供的亮度补偿参数确定方法的一示例的流程图。如图2所示，该亮度补偿参数确定方法可包括步骤201至步骤204。
步骤201，任意一个灰阶下、获取待补偿显示面板的第一显示区中目标颜色的多个第一子像素的第一亮度采集值，以及第二显示区中目标颜色的多个第二子像素的第二亮度采集值。
步骤202，判断多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值是否在标准范围内。
其中，标准范围是根据样本显示面板确定的。
步骤203，若采集比值不在标准范围内，则对第一亮度采集值和第二亮度采集值中的至少一者进行校正，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在 标准范围内，以得到待补偿显示面板的亮度校正值，亮度校正值包括第一子像素的第一亮度校正值和第二子像素的第二亮度校正值中的至少一者。
步骤204，将亮度校正值作为待补偿显示面板的显示亮度值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数。
本申请实施例中，对第一亮度采集值和第二亮度采集值中的至少一者进行校正后，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在标准范围内，得到亮度校正值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数，亮度校正值更符合待补偿显示面板的实际显示情况，即根据本申请实施例能够避免由于亮度采集装置的不稳定导致采集的第一亮度采集值和/或第二亮度采集值失真的问题，进而能够利用合理的亮度校正值来确定待补偿显示面板亮度补偿参数，以提高对显示面板的补偿效果，进而提高显示面板的显示均一性。
示例性的，在步骤201中，任意一个灰阶可以是显示面板能够显示的任意灰阶。例如，显示面板能够显示的灰阶范围为0～255，任意一个灰阶可以是0～255中的任意一个数值。例如，在确定显示面板的补偿参数的过程中，可以先确定一些指定灰阶绑点对应的补偿参数，然后利用线性插值法确定灰阶绑点之外的灰阶对应的补偿参数。具体的，任意一个灰阶可以是32灰阶、64灰阶、96灰阶、128灰阶、160灰阶、192灰阶、224灰阶以及255灰阶中的任意一个灰阶。为了清楚的表达，下文中将任意一个灰阶记为第一灰阶，应当理解的是，第一灰阶可以为任意一个灰阶数值。
示例性的，在步骤201之前，可以向待补偿显示面板输入第一灰阶画面，以点亮待补偿显示面板。在待补偿显示面板被点亮后，可利用机台上安装的图像采集设备对待补偿显示面板进行拍摄，以采集待补偿显示面板的亮度数据，并生成CSV数据。图像采集设备可以是高分辨率和高精度的相机如电荷耦合器件(Charge Coupled Device，CCD)相机。可对待补偿显示面板的整个显示区域进行拍照，即被拍摄区域包括整个第一显示区和整个第二显示区。获取第一显示区中所有目标颜色的第一子像素在第一灰阶下的第一亮度采集值，以及第二显示区中所有目标颜色的第二子像素在 第一灰阶下的第二亮度采集值。也可对待补偿显示面板的部分显示区域进行拍照，即被拍摄区域可包括整个第一显示区和部分第二显示区，或者，被拍摄区域可包括部分第一显示区和部分第二显示区。获取第一显示区中所有目标颜色的第一子像素在第一灰阶下的第一亮度采集值，以及第二显示区中部分目标颜色的第二子像素在第一灰阶下的第二亮度采集值。或者，获取第一显示区中部分目标颜色的第一子像素在第一灰阶下的第一亮度采集值，以及第二显示区中部分目标颜色的第二子像素在第一灰阶下的第二亮度采集值。部分第二显示区可选取第一显示区周围的区域，在此并不限定。
第一亮度采集值以及第二亮度采集值是指图像采集设备采集到的亮度值，由于指图像采集设备的不稳定性，第一亮度采集值以及第二亮度采集值与显示面板的实际显示的亮度可能存在差异。
CSV数据可包括待补偿显示面板的被拍摄区域中目标颜色的第一子像素在第一灰阶下的第一亮度采集值以及目标颜色的第二子像素在第一灰阶下的第二亮度采集值。CSV数据可具体实现为CSV数据文件，即CSV数据文件中存储有显示面板的被拍摄区域中目标颜色的第一子像素在第一灰阶下的第一亮度采集值以及目标颜色的第二子像素在第一灰阶下的第二亮度采集值。例如，CapRas_032_B.CSV文件中存储的是显示面板被拍摄区域中蓝色的第一子像素在灰阶32下的第一亮度采集值和被拍摄区域中蓝色的第二子像素在灰阶32下的第二亮度采集值。又例如，CapRas_224_R.CSV文件中存储的是待补偿显示面板被拍摄区域中红色的第一子像素在灰阶224下的第一亮度采集值和被拍摄区域中红色的第二子像素在灰阶224下的第二亮度采集值。
在一些示例中，对于待补偿显示面板的第一显示区的目标颜色的第一子像素在第一灰阶下的第一亮度采集值和待补偿显示面板的第二显示区的目标颜色的第二子像素在第一灰阶下的第二亮度采集值可通过两次对显示面板的拍摄分别得到，在此并不限定。例如，第一次对待补偿显示面板的拍摄获取到第一显示区的目标颜色的多个第一子像素在第一灰阶下的第一亮度采集值，可对应得到第一显示区在第一灰阶下对应的CSV数据。第二 次对待补偿显示面板的拍摄获取到第二显示区的目标颜色的多个第二子像素在第一灰阶下的第二亮度采集值，可对应得到第二显示区在第一灰阶下对应的CSV数据。两次拍摄过程中，可以采用不同的曝光系数。
目标颜色的第一子像素可为第一显示区中至少三种颜色中一种颜色的第一子像素。目标颜色的第二子像素可为第二显示区中至少三种颜色中一种颜色的第二子像素。在步骤202中所采用的第一亮度采集值对应的第一子像素的颜色与采用的第二亮度采集值对应的第二子像素的颜色相同。针对同一显示面板，可根据每种颜色的第一子像素和第二子像素，得到每种颜色的子像素对应的采集比值。
在步骤202中，采集比值即为多个第一亮度采集值的平均值与多个所述亮度采集值的平均值的商值。
例如，k_r1＝Ave_Local_r1/Ave_main_r1，其中，k_r1为待补偿显示面板与红色的子像素对应的在第一灰阶下的采集比值，Ave_Local_r1为待补偿显示面板的第一显示区中红色的第一子像素在第一灰阶下的第一亮度采集值的平均值，Ave_main_r1为待补偿显示面板的第二显示区中红色的第二子像素在第一灰阶下的第二亮度采集值的平均值。
又例如，k_b1＝Ave_Local_b1/Ave_main_b1，其中，k_b1为待补偿显示面板与蓝色的子像素对应的在第一灰阶下的采集比值，Ave_Local_b1为待补偿显示面板的第一显示区中蓝色的第一子像素在第一灰阶下的第一亮度采集值的平均值，Ave_main_b1为待补偿显示面板的第二显示区中蓝色的第二子像素在第一灰阶下的第二亮度采集值的平均值。
再例如，k_g1＝Ave_Local_g1/Ave_main_g1，其中，k_g1为待补偿显示面板与绿色的子像素对应的在第一灰阶下的采集比值，Ave_Local_g1为待补偿显示面板的第一显示区中绿色的第一子像素在第一灰阶下的第一亮度采集值的平均值，Ave_main_g1为待补偿显示面板的第二显示区中绿色的第二子像素在第一灰阶下的第二亮度采集值的平均值。
在步骤202之前，本申请实施例提供的亮度补偿参数确定方法还可以包括：基于与待补偿显示面板型号相同的样本显示面板确定预设补偿算法的覆盖范围，将预设补偿算法的覆盖范围作为标准范围。示例性的，待补 偿显示面板与样本显示面板的型号相同可以指两者结构相同、两者尺寸相同、两者分辨率相同等。例如，两者可以是同一批次生产的显示面板。
对显示面板进行补偿的过程包括补偿显示面板的第一显示区与第二显示区的亮度差，以使显示面板的第一显示区与第二显示区的显示亮度一致。本申请的发明人发现，无论在任何灰阶下，利用图像采集设备获取的多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值存在一个比较理想的标准范围，若采集比值在该标准范围内，直接基于第一亮度采集值和第二亮度采集值来确定显示面板的补偿参数，利用该补偿参数的补偿效果比较理想。若采集比值不在标准范围内时，若直接基于第一亮度采集值和第二亮度采集值来确定显示面板的补偿参数，则利用该补偿参数的补偿效果不理想，甚至造成过渡补偿。
示例性的，可以多次利用图像采集装置采集样本显示面板的第一显示区中目标颜色的多个第一子像素在第一灰阶下的第一亮度值，以及所述第二显示区中目标颜色的多个第二子像素在第一灰阶下的第二亮度值；每次采集亮度值之后，利用预设补偿算法并基于采集的第一亮度值和第二亮度值确定样本显示面板的补偿参数，基于确定的补偿参数对样本显示面板进行补偿，并比较每次的补偿效果。计算补偿效果比较理想的情况下对应的第一亮度值的平均值与第二亮度值的平均值的比值，将补偿效果比较理想的情况下对应的比值所在范围作为预设补偿算法的覆盖范围，即标准范围。
预设补偿算法可以为任意一种补偿算法，本申请对此不作限定。
各颜色的子像素对应的标准范围可以不同，本申请对此不作限定。例如，红色子像素对应的标准范围可以是2.25～2.65，绿色子像素对应的标准范围可以是2.4～2.8，蓝色子像素对应的标准范围可以是3.0～3.4。
例如，图3为本申请实施例提供的补偿效果满足条件的样本显示面板各颜色的子像素对应的亮度比值的示意图。图3中，横坐标表示灰阶值，纵坐标表示第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值。如图3所示，基于图像采集设备获取的亮度数据所得到的第一显示区的红色子像素的亮度平均值与第二显示区的红色子像素的亮度平均值的比值在红色子像素对应的标准范围内；基于 图像采集设备获取的亮度数据所得到的第一显示区的绿色子像素的亮度平均值与第二显示区的绿色子像素的亮度平均值的比值也在绿色子像素对应的标准范围内；基于图像采集设备获取的亮度数据所得到的第一显示区的蓝色子像素的亮度平均值与第二显示区的蓝色子像素的亮度平均值的比值也在蓝色子像素对应的标准范围内。即图像采集设备采集的第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值在标准范围内，对应的补偿效果才比较理想。
又例如，图4为本申请实施例提供的补偿效果不满足条件的样本显示面板各颜色的子像素对应的亮度比值的示意图。图4中，横坐标表示灰阶值，纵坐标表示第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值。如图4所示，基于图像采集设备获取的亮度数据所得到的第一显示区的红色子像素的亮度平均值与第二显示区的红色子像素的亮度平均值的比值不在红色子像素对应的标准范围内；基于图像采集设备获取的部分灰阶下的亮度数据所得到的第一显示区的绿色子像素的亮度平均值与第二显示区的绿色子像素的亮度平均值的比值不在绿色子像素对应的标准范围内；基于图像采集设备获取的亮度数据所得到的第一显示区的蓝色子像素的亮度平均值与第二显示区的蓝色子像素的亮度平均值的比值也不在蓝色子像素对应的标准范围内。即图像采集设备采集的第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值整体低于标准范围，在实际的补偿过程中，导致对第一显示区过渡补偿，继而导致第一显示区与第二显示区的亮度一致性变差。
在步骤203中，若采集比值不在标准范围内，可以对第一亮度采集值和第二亮度采集值中的至少一者进行校正。例如，可以仅对图像采集设备采集的第一亮度采集值进行校正，即亮度校正值包括第一子像素的第一亮度校正值。又例如，可以仅对图像采集设备采集的第二亮度采集值进行校正，即亮度校正值包括第而子像素的第二亮度校正值。再例如，可以对图像采集设备采集的第一亮度采集值以及第二亮度采集值均进行校正，即亮度校正值包括第一子像素的第一亮度校正值和第二子像素的第二亮度校正 值。
在一些可选的实施例中，为了保证第一显示区的透光率，第一显示区的像素密度可以小于第二显示区的像素密度。并且，第一显示区的面积也要小于第二显示区的面积。因此，第一显示区子像素数量远远小于第二显示区的子像素数量。因此，可以仅对图像采集设备采集的第一亮度采集值进行校正。示例性的，步骤203具体可以包括：将多个第一亮度采集值均乘以校正系数，得到多个第一校正亮度值，使多个第一校正亮度值的平均值与多个第二亮度采集值的平均值的校正比值在标准范围内。如此，能够减少计算量，提高效率。
具体的，若第一灰阶下采集比值小于标准范围的最小值，校正系数可以为大于1的数值；若第一灰阶下采集比值大于标准范围的最大值，校正系数可以为小于1的数值。
在一些可选的实施例中，若采集比值在标准范围内，则无需对第一亮度采集值和第二亮度采集值进行校正，可以直接基于第一亮度采集值和第二亮度采集值确定亮度补偿参数，并补偿第一显示区和第二显示区之间的亮度差。
在一些可选的实施例中，在将多个第一亮度采集值均乘以校正系数，得到多个第一校正亮度值之前，本申请实施例提供的亮度补偿参数确定方法还可以包括：根据采集比值偏离标准范围的程度，确定校正系数。如此，可以避免校正系数过大或过小，进而避免校正后的第一亮度采集值过大或过小。
示例性的，可以利用图像采集装置采集样本显示面板的第一显示区中多个目标颜色的第一子像素在第一灰阶下的第一亮度值，以及第二显示区中多个目标颜色的第二子像素在第一灰阶下的第二亮度值，并选取第一亮度值的平均值与第二亮度值的平均值的比值不在标准范围内的，以下将不在标准范围内的比值称为样本比值。计算样本比值与标准范围的偏离程度。示例性的，可以将样本比值与标准范围的中心值的差值作为偏离程度；或者，样本比值大于标准范围的最大值，将样本比值与标准范围的最大值的差值作为偏离程度；或者，样本比值小于标准范围的最小值，将标准范围 的最小值于样本比值的差值作为偏离程度，本申请对此不作限定。进一步的，可以对同一偏离程度设置不同的校正系数，并基于不同的校正系数对第一亮度值进行校正，并分析基于各校正后的第一亮度值的补偿效果，可选取补偿效果比较理想时所对应的校正系数作为最终的校正系数。
示例性的，可根据上述方法设置各个偏离程度各自对应的校正系数，并预先存储各个偏离程度与校正系数的对应关系；也可以设置多个偏离范围以及各偏离范围各自对应的校正系数，并预先存储各个偏离范围与校正系数的对应关系。从而在实际的亮度补偿参数确定过程中，可以根据采集比值偏离标准范围的程度，在预先存储的对应关系中，查找对应的校正系数。
在一些可选的实施例中，根据采集比值偏离标准范围的程度，确定校正系数的步骤具体可以包括：获取干预范围；其中，干预范围与标准范围的中心值相同，且干预范围大于标准范围；根据干预范围与采集比值的差值，确定第一偏离值；根据第一偏离值与干预范围的关系，确定校正系数。
示例性的，干预范围可以理解为预设补偿算法能够覆盖的范围上限，若采集比值在干预范围内，且不在标准范围内，直接基于第一亮度采集值和第二亮度采集值补偿第一显示区和第二显示区之间的亮度差，能够起到一定的补偿效果，但补偿效果并不理想。
示例性的，可以基于样本显示面板确定干预范围。例如，可以多次利用图像采集装置采集样本显示面板的第一显示区中目标颜色的多个第一子像素在第一灰阶下的第一亮度值，以及所述第二显示区中目标颜色的多个第二子像素在第一灰阶下的第二亮度值；每次采集亮度值之后，利用预设补偿算法并基于采集的第一亮度值和第二亮度值对样本显示面板进行补偿，并比较每次的补偿效果。计算具有一定补偿效果且补偿效果不够理想的情况下对应的第一亮度值的平均值与第二亮度值的平均值的比值，将此时比值所在范围作为预设补偿算法能够覆盖的范围上限，即干预范围。
各颜色的子像素对应的干预范围可以不同，本申请对此不作限定。例如，仍以红色子像素对应的标准范围是2.25～2.65，绿色子像素对应的标准范围是2.4～2.8，蓝色子像素对应的标准范围是3.0～3.4为例，红色子像素 对应的干预范围可以是1.95～2.95，绿色子像素对应的干预范围可以是2.1～3.1，蓝色子像素对应的干预范围可以是1.7～3.7。
示例性的，若第一偏离值在干预范围内，则根据式(1)确定校正系数：
Figure PCTCN2021093260-appb-000001
若第一偏离值大于干预范围的最大值，则根据式(2)确定校正系数：
Figure PCTCN2021093260-appb-000002
若第一偏离值小于干预范围的最小值，则根据式(3)确定校正系数：
Figure PCTCN2021093260-appb-000003
其中，θ为干预系数，(α-β，α+β)为标准范围，(α-Ω，α+Ω)为干预范围，α、β、Ω均为常数，且α＞0，Ω＞β≥0，α为标准范围和干预范围的中心值，k为采集比值，step k为第一偏离值，且step k＝|α+Ω-k|，step α为第一偏离值映射到标准范围内的第二偏离值，且
Figure PCTCN2021093260-appb-000004
Figure PCTCN2021093260-appb-000005
step ideal为理想比值，且step ideal＝α+β-step α。
示例性的，对于任意一种颜色的子像素，β的值可以为0.2，Ω的值可以为0.5。对于红色子像素，α的值可以为2.45，对于绿色子像素，α的值可以为2.6，对于蓝色子像素，α的值可以为3.2。当然，为例确保精度，α、β以及Ω的取值可以保留三位小数，例如，对于蓝色子像素，α的值可以为3.208。α、β以及Ω可以根据实际情况确定，本申请对此不作限定。
例如，图5为本申请实施例提供的显示面板中蓝色子像素对应的采集比值及校正比值的示意图。图5中，横坐标表示灰阶值，纵坐标表示第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值。示例性的，用亮度采集装置分别采集待补偿显示面板在32灰阶、64灰阶、96灰阶、128灰阶、160灰阶、192灰阶、224灰阶以及255灰阶下的亮度值，得到如图5中所示的采集比值的示意图。图5中，各灰阶下的采集比值均不在蓝色子像素对应的标准范围内，且各灰阶数值 下对应的第一偏离值小于干预范围的最小值，可根据上述式(3)计算校正系数，并基于计算的校正系数校正待补偿显示面板中第一显示区的各蓝色子像素的亮度值，得到图5中所示的校正比值的示意图。如图5所示，各灰阶值下的校正比值的变化趋势与采集比值的变化趋势是一致的。例如，64灰阶下的采集比值大于32灰阶下的采集比值，对应的，64灰阶下的校正比值也大于32灰阶下的校正比值。又例如，192灰阶下的采集比值小于160灰阶下的采集比值，192灰阶下的校正比值也小于60灰阶下的校正比值。
例如，图6为本申请实施例提供的显示面板各颜色的子像素校正前后的亮度比值的示意图。图6中，横坐标表示灰阶值，纵坐标表示第一显示区的目标颜色子像素的亮度平均值与第二显示区的目标颜色子像素的亮度平均值的比值。如图6所示，红色子像素对应的各灰阶值下的校正比值的变化趋势与采集比值的变化趋势是一致的，绿色子像素对应的各灰阶值下的校正比值的变化趋势与采集比值的变化趋势是一致的，蓝色子像素对应的各灰阶值下的校正比值的变化趋势与采集比值的变化趋势是一致的。其中，绿色子像素对应的部分灰阶值下采集比值在绿色子像素对应的标准范围内，因此，未对该部分灰阶值下采集比值进行校正。
根据本申请实施例提供的校正系数的确定方法，可以保证各灰阶值下校正比值的变化趋势与采集比值的变化趋势的一致性，以避免校正后的第一显示区发生色偏的问题。
如上所述，可以仅对第一亮度采集值进行校正，即亮度校正值包括第一亮度校正值。亮度补偿参数可以包括补偿灰阶值。在一些可选的实施例中，步骤204中，基于亮度校正值确定待补偿显示面板的亮度补偿参数可以包括：根据各第一子像素的第一校正亮度值，确定第一显示区的第一平均亮度值；根据各第二子像素的第二亮度采集值，确定第二显示区的第二平均亮度值；在待补偿显示面板的亮度值与灰阶值的对应关系中，确定第一平均亮度值对应的第一灰阶值以及第二平均亮度值对应的第二灰阶值；将第二灰阶值与第一灰阶值的差值，作为第一子像素的补偿灰阶值。如上所述，第一显示区子像素数量通常远远小于第二显示区的子像素数量，将 确定第二显示区的第二平均亮度值作为目标亮度值，仅确定第一显示区中第一子像素的补偿参数，能够减少计算量，提高效率。
本申请实施例还提供一种亮度补偿参数确定装置。该亮度补偿参数确定装置可用于上述实施例中的显示面板，关于显示面板的具体内容可参见上述实施例中相关说明，在此不再赘述。图7为本申请实施例提供的亮度补偿参数确定装置的一示例的结构示意图。如图7所示，该亮度补偿参数确定装置300可包括亮度获取模块301、判断模块302、校正模块303和补偿参数确定模块304。
亮度获取模块301可用于任意一个灰阶下、获取待补偿显示面板的第一显示区中目标颜色的多个第一子像素第一亮度采集值，以及第二显示区中目标颜色的多个第二子像素的第二亮度采集值。
判断模块302可用于判断多个第一亮度采集值的平均值与多个第二亮度采集值的平均值的采集比值是否在标准范围内。其中，标准范围是根据样本显示面板确定的。
校正模块303可用于若采集比值不在标准范围内，则对第一亮度采集值和第二亮度采集值中的至少一者进行校正，使校正后的目标颜色的多个第一子像素的亮度平均值与目标颜色的多个第二子像素的亮度平均值的校正比值在标准范围内，以得到待补偿显示面板的亮度校正值，亮度校正值包括第一子像素的第一亮度校正值和第二子像素的第二亮度校正值中的至少一者。
补偿参数确定模块304可用于将亮度校正值作为待补偿显示面板的显示亮度值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数。
本申请实施例提供一种亮度补偿参数确定装置，对第一亮度采集值和第二亮度采集值中的至少一者进行校正后，使校正后的多个目标颜色的第一子像素的亮度平均值与多个目标颜色的第二子像素的亮度平均值的校正比值在标准范围内，得到亮度校正值，并基于亮度校正值确定待补偿显示面板的亮度补偿参数，亮度校正值更符合待补偿显示面板的实际显示情况，即根据本申请实施例能够避免由于亮度采集装置的不稳定导致采集的第一亮度采集值和/或第二亮度采集值失真的问题，进而能够利用合理的亮度校 正值来确定待补偿显示面板亮度补偿参数，以提高对显示面板的补偿效果，进而提高显示面板的显示均一性。
在一些实施例中，校正模块303具体可用于将多个第一亮度采集值均乘以校正系数，得到多个第一校正亮度值，使多个第一校正亮度值的平均值与多个第二亮度采集值的平均值的校正比值在标准范围内。
图8为本申请实施例提供的亮度补偿参数确定装置的另一示例的结构示意图。图8与图7的不同之处在于，图8所示的亮度补偿参数确定装置300还可包括校正系数确定模块305。
在一些实施例中，校正系数确定模块305可用于根据采集比值偏离标准范围的程度，确定校正系数。
在一些实施例中，校正系数确定模块305可用于设置干预范围，使干预范围与标准范围的中心值相同，且干预范围大于标准范围；根据干预范围与采集比值的差值，确定第一偏离值；根据第一偏离值与干预范围的关系，确定校正系数。
在一些实施例中，校正系数确定模块305可用于若第一偏离值在干预范围内，则根据上述式(1)确定校正系数；若第一偏离值大于干预范围的最大值，则根据上述式(2)确定校正系数；若第一偏离值小于干预范围的最小值，则根据上述式(3)确定校正系数。
在一些实施例中，补偿参数确定模块304可用于根据各第一子像素的第一校正亮度值，确定第一显示区的第一平均亮度值；根据各第二子像素的第二亮度采集值，确定第二显示区的第二平均亮度值；在待补偿显示面板的亮度值与灰阶值的对应关系中，确定第一平均亮度值对应的第一灰阶值以及第二平均亮度值对应的第二灰阶值；将第二灰阶值与第一灰阶值的差值，作为第一子像素的补偿灰阶值。
图9为本申请实施例提供的亮度补偿参数确定设备的一示例的结构示意图。如图9所示，亮度补偿参数确定设备400包括存储器401、处理器402及存储在存储器401上并可在处理器402上运行的计算机程序。
在一个示例中，上述处理器402可以包括中央处理器(CPU)，或者特定集成电路(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401可以包括用于数据或指令的大容量存储器。举例来说而非限制，存储器401可包括HDD、软盘驱动器、闪存、光盘、磁光盘、磁带或通用串行总线(USB)驱动器或者两个或更多个以上这些的组合。在合适的情况下，存储器401可包括可移除或不可移除(或固定)的介质。在合适的情况下，存储器401可在终端热点开启亮度补偿参数确定设备400的内部或外部。在特定实施例中，存储器401是非易失性固态存储器。在特定实施例中，存储器401包括只读存储器(ROM)。在合适的情况下，该ROM可以是掩模编程的ROM、可编程ROM(PROM)、可擦除PROM(EPROM)、电可擦除PROM(EEPROM)、电可改写ROM(EAROM)或闪存或者两个或更多个以上这些的组合。
处理器402通过读取存储器401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亮度补偿参数确定方法。
在一个示例中，服务器400还可包括通信接口403和总线404。其中，如图9所示，存储器401、处理器402、通信接口403通过总线404连接并完成相互间的通信。
通信接口403，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403接入输入设备和/或输出设备。
总线404包括硬件、软件或两者，将亮度补偿参数确定设备400的部件彼此耦接在一起。举例来说而非限制，总线404可包括加速图形端口(AGP)或其他图形总线、增强工业标准架构(EISA)总线、前端总线(FSB)、超传输(HT)互连、工业标准架构(ISA)总线、无限带宽互连、低引脚数(LPC)总线、存储器总线、微信道架构(MCA)总线、外围组件互连(PCI)总线、PCI-Express(PCI-X)总线、串行高级技术附件(SATA)总线、视频电子标准协会局部(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404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。
本申请实施例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，该计算机程序被处理器执行时可实现上述实施例中的亮度补偿参数确定方法，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。
本申请如上文所述的实施例并没有详尽叙述所有的细节，也不限制本申请的范围。显然，根据以上描述，本领域普通技术人员可作很多的修改和变化。本说明书具体描述这些实施例，是为了更好地解释本申请的原理和实际应用，从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请的范围仅由所附权利要求书限定。

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  1. 一种亮度补偿参数确定方法，用于确定待补偿显示面板的亮度补偿参数，所述待补偿显示面板具有第一显示区和第二显示区，所述方法包括：
    任意一个灰阶下、获取所述待补偿显示面板的所述第一显示区中目标颜色的多个第一子像素的第一亮度采集值，以及所述第二显示区中所述目标颜色的多个第二子像素的第二亮度采集值；
    判断多个所述第一亮度采集值的平均值与多个所述第二亮度采集值的平均值的采集比值是否在标准范围内；其中，所述标准范围是根据样本显示面板确定的；
    若所述采集比值不在所述标准范围内，则对所述第一亮度采集值和所述第二亮度采集值中的至少一者进行校正，使校正后的所述目标颜色的多个第一子像素的亮度平均值与所述目标颜色的多个第二子像素的亮度平均值的校正比值在所述标准范围内，以得到所述待补偿显示面板的亮度校正值，所述亮度校正值包括所述第一子像素的第一亮度校正值和所述第二子像素的第二亮度校正值中的至少一者；
    将所述亮度校正值作为所述待补偿显示面板的显示亮度值，并基于所述亮度校正值确定所述待补偿显示面板的亮度补偿参数。
  2. 根据权利要求1所述的亮度补偿参数确定方法，其中，所述对所述第一亮度采集值和所述第二亮度采集值中的至少一者进行校正，使校正后的所述目标颜色的多个第一子像素的亮度平均值与所述目标颜色的多个第二子像素的亮度平均值的校正比值在所述标准范围内，包括：
    将多个所述第一亮度采集值均乘以校正系数，得到多个所述第一亮度补偿参数确定值，使多个所述第一亮度校正值的平均值与多个所述第二亮度采集值的平均值的校正比值在所述标准范围内。
  3. 根据权利要求2所述的亮度补偿参数确定方法，其中，在所述将多个所述第一亮度采集值均乘以校正系数，得到多个所述第一校正亮度值之前，所述方法还包括：
    根据所述采集比值偏离所述标准范围的程度，确定所述校正系数。
  4. 根据权利要求3所述的亮度补偿参数确定方法，其中，所述根据所述采集比值偏离所述标准范围的程度，确定所述校正系数，包括：
    获取干预范围；其中，所述干预范围与所述标准范围的中心值相同，且所述干预范围大于所述标准范围；
    根据所述干预范围与所述采集比值的差值，确定第一偏离值；
    根据所述第一偏离值与所述干预范围的关系，确定所述校正系数。
  5. 根据权利要求4所述的亮度补偿参数确定方法，其中，所述根据所述第一偏离值与所述干预范围的关系，确定所述校正系数，包括：
    若所述第一偏离值在所述干预范围内，则根据式(1)确定所述校正系数：
    Figure PCTCN2021093260-appb-100001
    若所述第一偏离值大于所述干预范围的最大值，则根据式(2)确定所述校正系数：
    Figure PCTCN2021093260-appb-100002
    若所述第一偏离值小于所述干预范围的最小值，则根据式(3)确定所述校正系数：
    Figure PCTCN2021093260-appb-100003
    其中，θ为所述干预系数，(α-β，α+β)为所述标准范围，(α-Ω，α+Ω)为所述干预范围，α、β、Ω均为常数，且α＞0，Ω＞β≥0，α为所述标准范围和所述干预范围的中心值，k为所述采集比值，step k为第一偏离值，且step k＝|α+Ω-k|，step α为第一偏离值映射到所述标准范围内的第二偏离值，且
    Figure PCTCN2021093260-appb-100004
    step ideal为理想比值，且step ideal＝α+β-step α。
  6. 根据权利要求2所述的亮度补偿参数确定方法，其中，所述亮度补偿参数确定值包括所述第一亮度校正值，所述亮度补偿参数包括补偿灰阶 值，所述基于所述亮度校正值确定所述待补偿显示面板的亮度补偿参数，包括：
    根据各所述第一子像素的所述第一校正亮度值，确定所述第一显示区的第一平均亮度值；
    根据各所述第二子像素的所述第二亮度采集值，确定所述第二显示区的第二平均亮度值；
    在所述待补偿显示面板的亮度值与灰阶值的对应关系中，确定所述第一平均亮度值对应的第一灰阶值以及所述第二平均亮度值对应的第二灰阶值；
    将所述第二灰阶值与所述第一灰阶值的差值，作为所述第一子像素的补偿灰阶值。
  7. 根据权利要求1所述的亮度补偿参数确定方法，其中在判断多个所述第一亮度采集值的平均值与多个所述第二亮度采集值的平均值的采集比值是否在标准范围内之前，所述方法进一步包括基于与待补偿显示面板型号相同的样本显示面板确定预设补偿算法的覆盖范围，将预设补偿算法的覆盖范围作为所述标准范围。
  8. 一种亮度补偿参数确定装置，用于确定待补偿显示面板的亮度补偿参数，所述待补偿显示面板具有第一显示区和第二显示区，所述装置包括：
    亮度获取模块，用于任意一个灰阶下、获取待补偿显示面板的所述第一显示区中目标颜色的多个第一子像素第一亮度采集值，以及所述第二显示区中所述目标颜色的多个第二子像素的第二亮度采集值；
    判断模块，用于判断多个所述第一亮度采集值的平均值与多个所述第二亮度采集值的平均值的采集比值是否在标准范围内；其中，所述标准范围是根据样本显示面板确定的；
    校正模块，用于若所述采集比值不在所述标准范围内，则对所述第一亮度采集值和所述第二亮度采集值中的至少一者进行校正，使校正后的所述目标颜色的多个第一子像素的亮度平均值与所述目标颜色的多个第二子像素的亮度平均值的校正比值在所述标准范围内，以得到所述待补偿显示 面板的亮度校正值，所述亮度校正值包括所述第一子像素的第一亮度校正值和所述第二子像素的第二亮度校正值中的至少一者；
    补偿参数确定模块，用于将所述亮度校正值作为所述待补偿显示面板的显示亮度值，并基于所述亮度校正值确定所述待补偿显示面板的亮度补偿参数。
  9. 根据权利要求8所述的装置，其中，所述校正模块具体用于：
    将多个所述第一亮度采集值均乘以校正系数，得到多个所述第一校正亮度值，使多个所述第一校正亮度值的平均值与多个所述第二亮度采集值的平均值的校正比值在所述标准范围内。
  10. 根据权利要求9所述的装置，其中，所述装置还包括校正系数确定模块，用于：
    根据所述采集比值偏离所述标准范围的程度，确定所述校正系数。
  11. 一种亮度补偿参数确定设备，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至7中任意一项所述的亮度补偿参数确定方法。
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