WO2022016976A1 - 显示面板的补偿参数确定方法及装置 - Google Patents

显示面板的补偿参数确定方法及装置 Download PDF

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Publication number
WO2022016976A1
WO2022016976A1 PCT/CN2021/094992 CN2021094992W WO2022016976A1 WO 2022016976 A1 WO2022016976 A1 WO 2022016976A1 CN 2021094992 W CN2021094992 W CN 2021094992W WO 2022016976 A1 WO2022016976 A1 WO 2022016976A1
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WIPO (PCT)
Prior art keywords
display area
grayscale
value
brightness
compensation
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PCT/CN2021/094992
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English (en)
French (fr)
Inventor
陈�峰
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昆山国显光电有限公司
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Publication of WO2022016976A1 publication Critical patent/WO2022016976A1/zh
Priority to US17/988,129 priority Critical patent/US20230069956A1/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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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 for determining compensation parameters of a display panel and a device for determining compensation parameters of a display panel.
  • the display screen is usually a regular rectangle.
  • the rectangular display screen can no longer meet the diverse needs of users.
  • the shapes of display screens are becoming more and more diverse.
  • the special-shaped display panels include non-display areas embedded in the edge or inside of the display area.
  • the non-display area is at least partially surrounded by the special-shaped display area.
  • Optical devices such as a front camera are arranged at the non-display area to realize the front camera function, and at the same time, because the non-display area is at least partially surrounded by a special-shaped display area, the screen ratio is increased.
  • an embodiment of the present application provides a method for determining compensation parameters of a display panel.
  • the display panel includes a non-display area, a first display area, and a second display area, and the first display area at least partially surrounds the non-display area; the method includes: : obtain the first current brightness value of the first display area under the first grayscale; determine the brightness compensation coefficient f corresponding to the first display area according to the first grayscale and the corresponding relationship between the grayscale range and the brightness compensation coefficient, 0 ⁇ f ⁇ 1; determine the actual brightness value of the first display area according to the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area; determine according to the actual brightness value and the first target brightness value of the first display area The first compensation parameter corresponding to the first display area.
  • an embodiment of the present application provides an apparatus for determining compensation parameters of a display panel.
  • the display panel includes a non-display area, a first display area, and a second display area, and the first display area at least partially surrounds the non-display area;
  • the apparatus includes : the current brightness acquisition module, used to acquire the first current brightness value of the first display area at the first grayscale;
  • the compensation coefficient determination module used to obtain the first grayscale, the preset grayscale range and the brightness compensation coefficient according to the first grayscale Corresponding relationship, determine the brightness compensation coefficient f corresponding to the first display area, 0 ⁇ f ⁇ 1;
  • the actual brightness determination module is used to determine the first display according to the product of the first brightness value and the brightness compensation coefficient corresponding to the first display area.
  • the compensation parameter determination module is used to determine the first compensation parameter corresponding to the first display area according to the actual brightness value and the first target brightness value corresponding to the first display area.
  • the first current luminance value of the first display area at the first grayscale is obtained, and the first grayscale and the preset grayscale range are The corresponding relationship of the brightness compensation coefficient, determine the brightness compensation coefficient corresponding to the first display area, and then determine the actual brightness value of the first display area according to the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area, and finally according to The obtained actual brightness value and the first target brightness value of the first display area determine the first compensation parameter of the first display area.
  • the actual brightness value of the first display area obtained is less than or equal to the first current brightness value, and then the first The display area is compensated for a higher depth, thereby improving the problem that the first display area is dark and improving the display effect of the display panel.
  • FIG. 1 shows a schematic structural diagram of a display panel provided by an example
  • FIG. 2 shows a schematic flowchart of a method for compensating parameters of a display panel provided by an embodiment of the present application
  • FIG. 3 shows a schematic diagram of a corresponding relationship between a gray scale range and a brightness compensation parameter provided by an embodiment of the present application
  • FIG. 4 shows a schematic diagram of a gamma curve of a display panel provided by an embodiment of the present application
  • FIG. 5 shows a schematic structural diagram of a display panel provided by another example
  • FIG. 6 shows a schematic diagram of selection of a target pixel unit provided by an embodiment of the present application
  • FIG. 7 shows a schematic diagram of selection of a target pixel unit provided by another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of an apparatus for determining compensation parameters of a display panel provided by an embodiment of the present application.
  • FIG. 1 shows a schematic structural diagram of a display panel provided by an example.
  • the display panel 100 may include a non-display area NA, a first display area AA1 and a second display area AA2, and the first display area AA1 at least partially surrounds the non-display area NA.
  • the non-display area NA may be an aperture area or a slot area.
  • a through hole or a blind hole may be provided in the non-display area NA for placing the photosensitive component.
  • the photosensitive component may be an image acquisition device for acquiring external image information.
  • the photosensitive component is a camera and the like.
  • the photosensitive component may not be limited to an image acquisition device.
  • the photosensitive component may also be an infrared sensor, a proximity sensor, an infrared lens, a flood light sensing element, an ambient light sensor, and a light sensor such as a dot matrix projector. It is the earpiece, speaker and other devices.
  • the present application does not limit the shape of the non-display area NA, which can be adjusted according to the functional devices that it needs to accommodate.
  • the shape of the non-display area NA can be a circle, an ellipse, a dumbbell, a gourd, a rectangle, etc., or other irregular shapes.
  • the non-display area NA is adjacent to an edge of the display panel 100 in the second direction Y, and the first display area AA1 may partially surround the non-display area NA.
  • the first display area AA1 may partially and completely surround the non-display area NA.
  • the first display area AA1 can be understood as a special-shaped display area of the display panel, and the second display area AA2 can be understood as a regular display area of the display panel.
  • the display panel 100 further includes a scan driver circuit (GIP circuit, not shown in the figure) and a scan line (not shown in the figure) connected to the scan driver circuit, and the scan driver circuit provides a scan signal to the pixels of the display panel through the scan line.
  • the scan lines generally extend along the first direction X, and the first direction X may be perpendicular to the second direction Y. Since the first display area AA1 surrounds the non-display area NA, the number of pixels connected by scan lines in the first display area AA1 is different from the number of pixels connected by scan lines in the second display area AA2, that is, the number of pixels connected by the scan lines in the first display area AA1 is different.
  • the load of the scan line is different from the load of the scan line of the second display area AA2.
  • the applicant of the present application found that, due to the difference in the load of the two display areas, the display brightness of the first display area AA1 is often darker than that of the second display area AA2.
  • Embodiments of the present application provide a method for determining compensation parameters for a display panel and a device for determining compensation parameters for a display panel. The following will describe the method for determining compensation parameters for a display panel and the device for determining compensation parameters for each embodiment of the display panel with reference to the accompanying drawings. instruction.
  • the embodiment of the present application provides a compensation parameter determination method for a display panel, which is used for the display panel, and the display panel may be an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel or a liquid crystal display panel.
  • OLED Organic Light Emitting Diode
  • FIG. 2 shows a schematic flowchart of a method for determining compensation parameters of a display panel according to an embodiment of the present application.
  • the method for determining compensation parameters of a display panel provided by an embodiment of the present application may include the following steps:
  • Step 110 obtaining the first current luminance value of the first display area under the first gray scale
  • Step 120 Determine the brightness compensation coefficient f corresponding to the first display area according to the first grayscale and the corresponding relationship between the grayscale range and the brightness compensation coefficient, where 0 ⁇ f ⁇ 1;
  • Step 130 Determine the actual brightness value of the first display area according to the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area;
  • Step 140 Determine a first compensation parameter corresponding to the first display area according to the actual brightness value and the first target brightness value of the first display area.
  • the first current brightness value of the first display area at the first grayscale is obtained, and the first grayscale and the preset grayscale range and the brightness compensation coefficient are obtained by obtaining the first current brightness value.
  • determine the brightness compensation coefficient corresponding to the first display area determine the actual brightness value of the first display area according to the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area, and finally according to the obtained actual brightness value and the first target luminance value of the first display area to determine the first compensation parameter of the first display area.
  • the actual brightness value of the first display area obtained is less than or equal to the first current brightness value, and then the first The display area is compensated for a higher depth, thereby improving the problem that the first display area is dark and improving the display effect of the display panel.
  • the first grayscale may be any grayscale that the display panel can display.
  • the grayscale range that the display panel can display is 0 ⁇ 255
  • the first grayscale may be 60 grayscale, 120 grayscale, 224 grayscale, or the like.
  • the first display area and the second display area of the display panel may include a plurality of pixel units arranged in an array.
  • the first current luminance value may be the luminance value of each pixel unit in the first display area at the first gray scale.
  • each pixel unit may include sub-pixels of at least three colors, for example, each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the first current brightness value may be the brightness value of the sub-pixels of each color in the first display area at the first gray scale.
  • the first compensation parameters corresponding to the sub-pixels of each color in the first display area at the first gray scale may be sequentially determined.
  • the first compensation parameter corresponding to each red sub-pixel in the first display area at 120 grayscale may be determined first.
  • the data voltage corresponding to the gray level of 120 can be input to each red sub-pixel of the display panel, and the image data of each red sub-pixel in the first display area of the display panel at the gray level of 120 can be collected by an image acquisition device to obtain the first The first current luminance value of each red sub-pixel in a display area at a gray level of 120.
  • the image acquisition device can be a color analyzer, such as CA410, CA310, etc. To avoid interference from ambient light, image acquisition can be performed in a dark room.
  • the image capture device can be placed just above the display panel, and ensure that the image capture device is focused, so as to accurately capture the image data of the display panel. The same is true for obtaining the first current luminance values of sub-pixels of other colors under the first gray scale, and details are not described in this application.
  • a plurality of gray-scale ranges with different ranges and the respective corresponding luminance compensation coefficients of each gray-scale range may be preset, that is, the corresponding relationship between the gray-scale ranges and the luminance compensation coefficients may be pre-established, and any adjacent two
  • the brightness compensation coefficient corresponding to the first grayscale range in the grayscale range is smaller than the brightness compensation coefficient corresponding to the second grayscale range, and the minimum grayscale value of the first grayscale range is greater than the maximum grayscale value of the second grayscale range. That is, as the gray scale value increases, the corresponding luminance compensation coefficient decreases gradually.
  • FIG. 3 shows a schematic diagram of a corresponding relationship between a gray scale range and a brightness compensation parameter provided according to an embodiment of the present application.
  • the gray scale range and the brightness compensation coefficient corresponding to each gray scale range shown in Figure 3 are just an example, and more gray scale ranges can be preset, such as 10, 20, etc., and the corresponding gray scale ranges can be set. Brightness compensation factor.
  • the applicant of the present application has found that when the display panel displays a medium-high grayscale picture, the display brightness of the first display area is relatively dark, and when the display panel displays a low grayscale picture, the display brightness of the first display area is relatively low. The degree of darkness is not so serious. Therefore, in the present application, for each gray scale range set, as the gray scale value increases, the corresponding luminance compensation coefficient gradually decreases.
  • the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area may be used as the actual brightness value of the first display area. It should be understood that, under the first grayscale, the real display brightness of the first display area is the first current brightness value.
  • the first current brightness value is processed, and the first current brightness value and the first display
  • the product of the brightness compensation coefficients corresponding to the regions represents the actual brightness value of the first display region.
  • the first compensation parameter of the first display region is determined based on the actual brightness value obtained after processing.
  • the first grayscale belongs to the mid-to-high grayscale range, for example, the first grayscale belongs to the grayscale range (64, 128], or the first grayscale belongs to the grayscale range (128, 255], the obtained first grayscale
  • the actual brightness value of the display area is smaller, that is, the actual brightness value of the first display area is lower, so that a higher depth compensation can be performed on the first display area to improve the display of high grayscale images in the first display area.
  • the problem of serious darkening If the first grayscale belongs to the low grayscale range, for example, the first grayscale belongs to the grayscale range [0, 64], then the actual brightness value of the first display area represented is the same as that of the first display area.
  • the real brightness value of the first display area is the same, so as to avoid higher depth compensation for the first display area, so as to avoid excessive compensation when displaying low-gray-scale images in the first display area.
  • the display brightness of the second display area is higher than that of the second display area, which improves the display uniformity of the display panel.
  • Matlab software may be used to extract the first current brightness value obtained by the image acquisition device. If what is obtained in step 110 is the first current luminance value corresponding to each pixel unit arranged in the array in the first display area, then in step 130 the first current luminance value corresponding to each pixel unit arranged in the array is Both are multiplied by the luminance compensation coefficient corresponding to the first display area.
  • the first compensation parameter may be a first compensation grayscale value.
  • Step 140 may specifically include: determining a first grayscale value corresponding to the actual brightness value and a second grayscale value corresponding to the first target brightness value according to the gamma curve of the display panel; calculating the second grayscale value and the first grayscale value The difference between the values is obtained to obtain the first compensation parameter corresponding to the first display area.
  • FIG. 4 shows a schematic diagram of a gamma curve of a display panel provided according to an embodiment of the present application.
  • the gamma curve of the display panel represents the corresponding relationship between the grayscale value and the luminance value of the display panel.
  • the gamma value (Gamma) of the display panel is 2.2
  • the brightness value corresponding to 255 grayscales in the gamma curve is 430 nits. It should be noted that the present application does not limit the gamma value of the display panel.
  • the brightness data may be converted into corresponding grayscale value data
  • the difference between the second grayscale value and the first grayscale value is calculated, and the difference is the compensated grayscale value corresponding to the first display area. Therefore, the first compensation parameter corresponding to the first display area is accurately determined, so as to perform more effective compensation for the first display area.
  • the first target brightness value may be the brightness value at the first gray scale at the center point of the second display area.
  • the first target brightness value may be an average brightness value of the second display area at the first gray scale. It should be understood that, if the first grayscale picture is a monochrome picture, exemplarily, the first grayscale picture is a red picture, then the average luminance value of the second display area at the first grayscale is the second display area The average luminance value of each red sub-pixel at the first gray scale.
  • the first target brightness value of the first display area is set to the center point brightness value or the average brightness value of the second display area, so that when using the first compensation parameter to perform brightness compensation on the first display area, not only can the first display area be avoided
  • the brightness is relatively dark, and the display brightness of the first display area can be made to be consistent with the display brightness of the second display area, thereby improving the uniformity of the display brightness of the display panel.
  • the method for determining compensation parameters of a display panel may further include step 151, acquiring a second current luminance value of the second display area at the first gray scale; and step 152, The second compensation parameter corresponding to the second display area is determined according to the second current brightness value and the second target brightness value of the second display area.
  • the second current luminance value may be the luminance value of each pixel unit in the second display area at the first gray scale.
  • each pixel unit may include sub-pixels of at least three colors, for example, each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the second current luminance value may be the luminance value of the sub-pixels of each color in the second display area at the first gray scale.
  • the second compensation parameters corresponding to the sub-pixels of each color in the second display area at the first gray scale may be sequentially determined.
  • the second compensation parameter may be a second compensation grayscale value.
  • Step 152 may specifically include: according to the gamma curve of the display panel, determining the third grayscale value corresponding to the second current brightness value and the fourth grayscale value corresponding to the second target brightness value; calculating the fourth grayscale value and the third grayscale value The difference between the grayscale values is used to obtain the second compensation parameter corresponding to the second display area.
  • the second current brightness value of the second display area is not further processed, but the second compensation corresponding to the second display area is directly determined according to the second current brightness value and the second target brightness value parameter to avoid over-compensation for the second display area.
  • the second target luminance value may be the luminance value at the first gray scale at the center point of the second display area.
  • the second target brightness value may be the average brightness value of the second display area under the first grayscale, so as to ensure that the brightness of each area in the second display area after compensation is consistent.
  • the display panel 100 further includes a transition display area AA3 located between the first display area AA1 and the second display area AA2.
  • a transition display area AA3 located between the first display area AA1 and the second display area AA2.
  • the actual number of pixel rows occupied by the non-display area NA is 88 rows, while the number of pixel rows occupied by the non-display area NA stored in the IC chip of the display panel is 90 rows.
  • the pixels in the 89th to 90th rows that are directly opposite to the column direction of the display area NA provide black image data, and due to the crosstalk problem, there will be a clear dividing line between the first display area AA1 and the second display area AA2 , that is, the display brightness of the transition display area AA3 is obviously inconsistent with the brightness of the first display area AA1 and the second display area AA2.
  • the applicant of the present application found that when the display panel displays a high grayscale image, there is usually a brighter boundary between the first display area AA1 and the second display area AA2, and when the display panel displays a low grayscale image, the first There is usually a dark boundary between the display area AA1 and the second display area AA2.
  • the applicant of the present application further found that if grayscale compensation is performed on each pixel unit of the transition display area AA3, the problem of transition compensation will occur, for example, the bright boundary line will be compensated for the dark state, Compensates for a darker boundary line to be brighter.
  • the grayscale compensation usually only compensates integer grayscale values, which cannot meet the more refined compensation requirements of the transition display area.
  • the method for determining compensation parameters of a display panel may further include step 161, obtaining a third current luminance value of the transition display area at the first grayscale; step 162, in the pixel unit of the transition display area Select part of the pixel units as the target pixel unit, and there are unselected pixel units at intervals between any two adjacent target pixel units; And step 163, according to the third current brightness value and the third target brightness value of the transition display area , determine the third compensation parameter corresponding to each target pixel unit in the transition display area, and set the compensation parameter of the unselected pixel unit in the transition display area to 0.
  • the third current luminance value may be the luminance value of each pixel unit in the transition display area at the first gray scale.
  • each pixel unit may include sub-pixels of at least three colors, for example, each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the third current luminance value may be the luminance value of the sub-pixels of each color in the transition display area at the first gray scale.
  • the third compensation parameters corresponding to the sub-pixels of each color in the target pixel unit in the transition display area at the first gray scale may be sequentially determined.
  • the third compensation parameter may be a third compensation grayscale value.
  • Step 163 may specifically include: determining the fifth grayscale value corresponding to the third current brightness value and the sixth grayscale value corresponding to the third target brightness value according to the gamma curve of the display panel; calculating the sixth grayscale value and the fifth grayscale value The difference between the grayscale values is used to obtain the third compensation parameter corresponding to the transition display area.
  • the compensation parameters of the unselected pixel units are set to 0, so that only some pixel units in the transition display area can be compensated , and then the compensation effect of several tenths of gray levels can be achieved on average for all pixel units in the transition display area, so as to achieve more fine compensation for the transition display area and avoid causing transition compensation to the transition display area.
  • unselected pixel units are spaced between adjacent target pixel units, so that uniform compensation can be performed on the transition display area.
  • the third target brightness value may be the brightness value at the first gray scale at the center point of the second display area.
  • the third target brightness value may be an average brightness value of the second display area at the first gray scale. Setting the third target brightness value of the transition display area to the center point brightness value or average brightness value of the second display area can make the display brightness of the transition display area tend to be consistent with the display brightness of the second display area, and improve the display panel display. Uniformity of brightness.
  • step 162 may specifically include: selecting part of the pixel units from the pixel units in the transition display area as target pixel units, so that there are N spaces between any two adjacent target pixel units in the row direction Unselected pixel units, and N unselected pixel units are spaced between any two adjacent target pixel units in the column direction; wherein, N is a positive integer greater than or equal to 1.
  • FIG. 6 and FIG. 7 Exemplarily, as shown in FIG. 6 and FIG. 7 , pixel units with 4 rows and 8 columns in the transition display area are shown. FIG. 6 and FIG. 7 are only examples, and do not mean that the pixel units in the transition display area are 4 rows and 8 columns as shown in FIG. 6 or FIG. 7 .
  • the unfilled shape represents the unselected pixel unit NP
  • the filled shape represents the selected target pixel unit TP.
  • the target pixel unit TP can be selected in a single row and a single column manner.
  • the pixel units of the even-numbered columns of the odd-numbered rows are selected as the target pixel units TP
  • the pixel units of the odd-numbered columns of the even-numbered rows are selected as the target pixel units TP
  • the rest are regarded as the unselected pixel units NP. That is, in the same row of pixel units, an unselected pixel unit NP is spaced between adjacent target pixel units TP, and in the same column of pixel units, an unselected pixel unit NP is also spaced between adjacent target pixel units TP. .
  • the compensation effect of 0.5 grayscale can be achieved for all pixel units in the transition display area.
  • the target pixel unit TP may also be selected in the manner of every multiple rows and multiple columns. Referring to FIG. 7 , the target pixel unit TP can be selected in a manner of two rows and two columns. That is, in the same row of pixel units, there are two unselected pixel units NP between adjacent target pixel units TP, and in the same column of pixel units, there are also two unselected pixels between adjacent target pixel units TP. Unit NP.
  • the compensation effect of about 0.33 grayscales can be achieved for all pixel units in the transition display area.
  • the number of unselected pixel units spaced between any two adjacent target pixel units in the row direction is the same as the number of unselected pixel units spaced between any two adjacent target pixel units in the column direction.
  • the number of selected pixel units is equal, so that more uniform compensation for the transition display area can be achieved.
  • the compensation parameter determination method provided by the embodiments of the present application may further include step 170: displaying the first compensation parameter corresponding to the first display area, the second compensation parameter corresponding to the second display area, and the transition display
  • the third compensation parameter corresponding to each target pixel unit in the area is stored in the storage module of the display panel.
  • each compensation parameter when compensating the display panel, each compensation parameter can be directly called, and each compensation parameter does not need to be calculated again, so that the display delay of the display panel can be avoided and user satisfaction can be improved.
  • FIG. 8 shows a schematic structural diagram of an apparatus for determining compensation parameters of a display panel according to an embodiment of the present application.
  • the display panel includes a non-display area, a first display area and a second display area, and the first display area at least partially surrounds the non-display area.
  • the apparatus for determining compensation parameters of a display panel provided by the embodiment of the present application may include the following modules:
  • the current brightness obtaining module 801 is configured to obtain the first current brightness value of the first display area under the first gray scale
  • the compensation coefficient determination module 802 which can also be referred to as a compensation coefficient determination circuit, is used to determine the luminance compensation coefficient f, 0 corresponding to the first display area according to the first gray scale and the corresponding relationship between the preset gray scale range and the luminance compensation coefficient. ⁇ f ⁇ 1;
  • the actual brightness determination module 802 is configured to determine the actual brightness value of the first display area according to the product of the first brightness value and the brightness compensation coefficient corresponding to the first display area;
  • the compensation parameter determination module 804 is configured to determine the first compensation parameter corresponding to the first display area according to the actual brightness value and the first target brightness value corresponding to the first display area.
  • the first current luminance value of the first display area at the first gray scale is obtained, and compensation is performed according to the first gray scale and the preset gray scale range and luminance.
  • the corresponding relationship between the coefficients determine the brightness compensation coefficient corresponding to the first display area, and then determine the actual brightness value of the first display area according to the product of the first current brightness value and the brightness compensation coefficient corresponding to the first display area, and finally according to the obtained
  • the actual brightness value and the first target brightness value of the first display area determine the first compensation parameter of the first display area.
  • the actual brightness value of the first display area obtained is less than or equal to the first current brightness value, and then the first The display area is compensated for a higher depth, thereby improving the problem that the first display area is dark and improving the display effect of the display panel.
  • the device for determining compensation parameters of a display panel may further include a corresponding relationship setting module, configured to:
  • the compensation parameter determination module 804 is specifically configured to: determine the first grayscale value corresponding to the actual brightness value and the second grayscale value corresponding to the first target brightness value according to the gamma curve of the display panel ; Calculate the difference between the second grayscale value and the first grayscale value to obtain the first compensation parameter corresponding to the first display area.
  • the current brightness obtaining module 801 is further configured to obtain the second current brightness value of the second display area at the first gray scale; the compensation parameter determining module 804 is further configured to obtain the second current brightness value and The second target brightness value of the second display area determines the second compensation parameter corresponding to the second display area.
  • the display panel further includes a transition display area located between the first display area and the second display area, and the current brightness acquiring module 801 is further configured to: acquire the transition display area under the first grayscale The third current brightness value; the device also includes a selection module for selecting part of the pixel units as the target pixel unit in the pixel units of the transition display area, so that there is an unselected interval between any two adjacent target pixel units.
  • the compensation parameter determination module 804 is further configured to: determine the third compensation parameter corresponding to each target pixel unit in the transition display area according to the third brightness value and the third target brightness value of the transition display area, The compensation parameters of unselected pixel cells are set to 0.
  • the selection module is specifically used for:
  • Part of the pixel units in the transition display area are selected as target pixel units, so that there are N unselected pixel units between any two adjacent target pixel units in the row direction, and any two pixel units in the column direction are separated. N unselected pixel units are spaced between adjacent target pixel units; wherein, N is a positive integer greater than or equal to 1.
  • the first current luminance value is the luminance value of each pixel unit in the first display area at the first gray scale
  • the second current luminance value is the luminance value of each pixel unit in the second display area at the first grayscale
  • the luminance value under the gray scale, the third current luminance value is the luminance value of each pixel unit in the transition display area under the first gray scale;
  • the first target luminance value, the second target luminance value and the third target luminance value are the first target luminance value.
  • the brightness value of the center point of the second display area at the first grayscale, or the first target brightness value, the second target brightness value, and the third target brightness value are the average brightness values of the second display area at the first grayscale .
  • the apparatus may further include a storage control module for:
  • the first compensation parameter corresponding to the first display area, the second compensation parameter corresponding to the second display area, and the third compensation parameter corresponding to each target pixel unit of the transition display area are stored in the storage module of the display panel.
  • Embodiments of the present application further provide a computer-readable storage medium, on which computer program instructions are stored; when the computer program instructions are executed by a processor, the compensation parameters of any one of the display panels in the foregoing embodiments are implemented Determine the method.
  • the program or code segments may be stored in a machine-readable medium or transmitted over a transmission medium or communication link by a data signal carried in a carrier wave.
  • a "machine-readable medium” may include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and the like.
  • the code segments may be downloaded via a computer network such as the Internet, an intranet, or the like.
  • the computer-readable storage medium may be a non-transitory computer-readable storage medium.

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Abstract

一种显示面板(100)的补偿参数确定方法及装置。显示面板(100)包括非显示区(NA)、第一显示区(AA1)及第二显示区(AA2)，第一显示区(AA1)至少部分围绕非显示区(NA)；显示面板(100)的补偿参数确定方法包括(110)获取第一显示区(AA1)在第一灰阶下的第一当前亮度值；根据第一灰阶以及灰阶范围与亮度补偿系数的对应关系，(120)确定第一显示区(AA1)对应的亮度补偿系数f，0＜f≤1 ；(130)根据第一当前亮度值与第一显示区(AA1)对应的亮度补偿系数的乘积，确定第一显示区(AA1)的实际亮度值；(140)根据实际亮度值及第一显示区(AA1)的第一目标亮度值，确定第一显示区(AA1)对应的第一补偿参数。

Description

显示面板的补偿参数确定方法及装置
相关申请的交叉引用
本申请要求享有于2020年07月24日提交的名称为“显示面板的补偿参数确定方法及装置”的中国专利申请第202010723136.0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，具体涉及一种显示面板的补偿参数确定方法及显示面板的补偿参数确定装置。
背景技术
目前，常见的显示装置，例如显示器、电视机、手机、平板电脑等，其显示屏通常为规则的矩形。随着显示技术的发展，矩形的显示屏已经不能满足用户多样化的使用需求。因而，显示屏的形状越来越多样化。
为了提高屏占比，同时实现前置摄像等功能，出现了异形显示面板，异形显示面板包括嵌于显示区域边缘或内部的非显示区域，非显示区域至少部分被异形显示区域包围，这样，可以在该非显示区域处设置前置摄像头等光学器件，以实现前置摄像功能，同时由于该非显示区域至少部分被异形显示区域包围，从而提高了屏占比。
然而，由于异形显示区域和常规显示区域的负载存在差异，容易出现异形显示区域显示亮度偏暗的问题。
申请内容
第一方面，本申请实施例提供一种显示面板的补偿参数确定方法，显示面板包括非显示区、第一显示区及第二显示区，第一显示区至少部分围绕非显示区；该方法包括：获取第一显示区在第一灰阶下的第一当前亮度值；根据第一灰阶以及灰阶范围与亮度补偿系数的对应关系，确定第一显 示区对应的亮度补偿系数f，0＜f≤1；根据第一当前亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值；根据实际亮度值及第一显示区的第一目标亮度值，确定第一显示区对应的第一补偿参数。
第二方面，本申请实施例提供一种显示面板的补偿参数确定装置，显示面板包括非显示区、第一显示区及第二显示区，第一显示区至少部分围绕非显示区；该装置包括：当前亮度获取模块，用于获取第一显示区在第一灰阶下的第一当前亮度值；补偿系数确定模块，用于根据第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数f，0＜f≤1；实际亮度确定模块，用于根据第一亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值；补偿参数确定模块，用于根据实际亮度值及第一显示区对应的第一目标亮度值，确定第一显示区对应的第一补偿参数。
根据本申请实施例提供的显示面板的补偿参数确定方法及装置，通过获取第一显示区在第一灰阶下的第一当前亮度值，并根据第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数，然后根据第一当前亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值，最后根据得到的实际亮度值以及第一显示区的第一目标亮度值，确定第一显示区的第一补偿参数。根据本申请实施例，通过将第一当前亮度值乘以一个小于或等于1的亮度补偿系数，使得到的第一显示区的实际亮度值小于或等于第一当前亮度值，继而能够对第一显示区进行更高深度的补偿，从而改善第一显示区偏暗的问题，提高显示面板的显示效果。
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示出一种示例提供的显示面板的结构示意图；
图2示出本申请一种实施例提供的显示面板的补偿参数方法的流程示意图；
图3示出本申请一种实施例提供的灰阶范围与亮度补偿参数的对应关系示意图；
图4示出本申请一种实施例提供的显示面板的伽玛曲线的示意图；
图5示出另一种示例提供的显示面板的结构示意图；
图6示出本申请一种实施例提供的目标像素单元的选取示意图；
图7示出本申请另一种实施例提供的目标像素单元的选取示意图；
图8示出本申请一种实施例提供的显示面板的补偿参数确定装置的结构示意图。
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。
图1示出一种示例提供的显示面板的结构示意图。如图1所示，显示面板100可以包括非显示区NA、第一显示区AA1及第二显示区AA2，第一显示区AA1至少部分围绕非显示区NA。
示例性的，非显示区NA可以为开孔区或者开槽区。非显示区NA内可以设置通孔或者盲孔，用于放置感光组件。感光组件可以是图像采集装置，用于采集外部图像信息。例如感光组件为摄像头等。感光组件可以不限于是图像采集装置，例如在一些实施例中，感光组件也可以是红外传感器、接近传感器、红外镜头、泛光感应元件、环境光传感器以及点阵投影器等光传感器，还可以是听筒、扬声器等器件。
另外，对于非显示区NA的形状本申请不做限制，可以根据其所需容纳的功能器件进行调整。例如，非显示区NA的形状可以为圆形、椭圆形、 哑铃形、葫芦形、矩形等，也可以为其他不规则形状。
如图1所示，非显示区NA紧邻显示面板100在第二方向Y上的一个边缘，第一显示区AA1可以部分围绕非显示区NA。或者，非显示区NA与显示面板的边缘间隔有一定的距离，第一显示区AA1可以部分完全围绕非显示区NA。第一显示区AA1可以理解为显示面板的异形显示区，第二显示区AA2可以理解为显示面板的常规显示区。
显示面板100还包括扫描驱动电路(GIP电路，图中未示出)以及与扫描驱动电路连接的扫描线(图中未示出)，扫描驱动电路通过扫描线向显示面板的像素提供扫描信号。扫描线通常沿第一方向X延伸，第一方向X可以与第二方向Y垂直。由于第一显示区AA1包围非显示区NA，因此，第一显示区AA1内的扫描线连接的像素数量与第二显示区AA2的扫描线连接的像素数量不同，即第一显示区AA1内的扫描线的负载与第二显示区AA2的扫描线的负载不同。本申请的申请人发现，由于两个显示区负载的差异，导致第一显示区AA1的显示亮度往往比第二显示区AA2的显示亮度偏暗。
本申请实施例提供了一种显示面板的补偿参数确定方法及显示面板的补偿参数确定装置，以下将结合附图对显示面板的补偿参数确定方法及显示面板的补偿参数确定装置的各实施例进行说明。
本申请实施例提供一种显示面板的补偿参数确定方法，用于显示面板，该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。
图2示出根据本申请一种实施例提供的显示面板的补偿参数确定方法的流程示意图。如图2所示，本申请实施例提供的显示面板的补偿参数确定方法可以包括以下步骤：
步骤110，获取第一显示区在第一灰阶下的第一当前亮度值；
步骤120，根据第一灰阶以及灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数f，0＜f≤1；
步骤130，根据第一当前亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值；
步骤140，根据实际亮度值及第一显示区的第一目标亮度值，确定第一显示区对应的第一补偿参数。
根据本申请实施例提供的显示面板的补偿方法，通过获取第一显示区在第一灰阶下的第一当前亮度值，并根据第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数，然后根据第一当前亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值，最后根据得到的实际亮度值以及第一显示区的第一目标亮度值，确定第一显示区的第一补偿参数。根据本申请实施例，通过将第一当前亮度值乘以一个小于或等于1的亮度补偿系数，使得到的第一显示区的实际亮度值小于或等于第一当前亮度值，继而能够对第一显示区进行更高深度的补偿，从而改善第一显示区偏暗的问题，提高显示面板的显示效果。
示例性的，在步骤110中，第一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，第一灰阶可以是60灰阶、120灰阶、224灰阶等。
显示面板的第一显示区及第二显示区可以包括阵列排布的多个像素单元。在步骤110中，第一当前亮度值可以为第一显示区的各像素单元在第一灰阶下的亮度值。示例性的，各像素单元可以包括至少三种颜色的子像素，例如各像素单元包括红色子像素、绿色子像素及蓝色子像素。在步骤110中，第一当前亮度值可以为第一显示区的各颜色的子像素在第一灰阶下的亮度值。示例性的，可以依次确定第一显示区中的各颜色的子像素在第一灰阶下对应的第一补偿参数。
示例性的，以第一灰阶为120灰阶为例，可以先确定第一显示区的各红色子像素在120灰阶下对应的第一补偿参数。例如，可以先向显示面板的各红色子像素输入120灰阶对应的数据电压，并利用图像采集设备采集显示面板第一显示区的各红色子像素在120灰阶下的图像数据，以获取第一显示区的各红色子像素在120灰阶下的第一当前亮度值。图像采集设备可以是色彩分析仪，例如CA410、CA310等。为避免环境光的干扰，可以在暗室中进行图像采集。可以将图像采集设备放置在显示面板的正上方， 并确保图像采集设备聚焦，以准确的采集显示面板的图像数据。获取其他颜色的子像素在第一灰阶下的第一当前亮度值同理，本申请对此不再赘述。
在步骤120之前，可以预先设置多个范围不同的灰阶范围及每个灰阶范围各自对应的亮度补偿系数，即预先建立灰阶范围与亮度补偿系数的对应关系，且使任意相邻两个灰阶范围中的第一灰阶范围对应的亮度补偿系数小于第二灰阶范围对应的亮度补偿系数，第一灰阶范围的最小灰阶值大于第二灰阶范围的最大灰阶值。即随着灰阶值的增大，对应的亮度补偿系数是逐渐减小的。
图3示出根据本申请一种实施例提供的灰阶范围与亮度补偿参数的对应关系示意图。示例性的，如图3所示，可以预先设置三个灰阶范围，分别为灰阶范围[0，64]，灰阶范围(64，128]，灰阶范围(128，255]，其中，灰阶范围[0，64]对应的亮度补偿系数f＝1，灰阶范围(64，128]对应的亮度补偿系数f＝0.095，灰阶范围(128，255]对应的亮度补偿系数f＝0.085。图3所示的灰阶范围及各灰阶范围对应的亮度补偿系数仅仅是一个示例，可以预先设置更多个灰阶范围，例如10个、20个等，并设置各灰阶范围对应的亮度补偿系数。
本申请的申请人发现，在显示面板显示中高灰阶画面时，第一显示区的显示亮度偏暗的程度较严重，而在显示面板显示低灰阶画面时，第一显示区的显示亮度偏暗的程度则没那么严重。因此，本申请中，设置的各灰阶范围，随着灰阶值的增大，对应的亮度补偿系数是逐渐减小的。在步骤130中，可以将第一当前亮度值与第一显示区对应的亮度补偿系数的乘积作为第一显示区的实际亮度值。应当理解的是，在第一灰阶下，第一显示区的真实显示亮度是第一当前亮度值，本申请中，对第一当前亮度值进行处理，用第一当前亮度值与第一显示区对应的亮度补偿系数的乘积表示第一显示区的实际亮度值，进一步的在步骤140中，基于处理后得到的实际亮度值来确定第一显示区的第一补偿参数。
示例性的，若第一灰阶属于中高灰阶范围，例如第一灰阶属于灰阶范围(64，128]，或者，第一灰阶属于灰阶范围(128，255]，得到的第一显示区的实际亮度值更小，即所表示的第一显示区的实际亮度值更低，从而可 以对第一显示区进行更高深度的补偿，以改善第一显示区显示高灰阶画面时偏暗程度严重的问题。若第一灰阶属于低灰阶范围，例如第一灰阶属于灰阶范围[0，64]，则所表示的第一显示区的实际亮度值与第一显示区的真实的亮度值相同，避免对第一显示区进行更高深度的补偿，从而避免对第一显示区显示低灰阶画面时造成过度补偿，从而也能够避免低灰阶画面下，第一显示区的显示亮度高于第二显示区的显示亮度，提高显示面板的显示均一性。
示例性的，在步骤130中，可以利用Matlab软件提取图像采集设备获取的第一当前亮度值。若在步骤110中获取的为第一显示区中阵列排布的各像素单元各自对应的第一当前亮度值，则在步骤130中将阵列排布的各像素单元各自对应的第一当前亮度值均乘以第一显示区对应的亮度补偿系数。
在一些可选的实施例中，在步骤140中，第一补偿参数可以是第一补偿灰阶值。步骤140具体可以包括：根据显示面板的伽玛曲线，确定实际亮度值对应的第一灰阶值及第一目标亮度值对应的第二灰阶值；计算第二灰阶值与第一灰阶值的差值，得到第一显示区对应的第一补偿参数。
图4示出根据本申请一种实施例提供的显示面板的伽玛曲线的示意图。如图4所示，显示面板的伽玛曲线表示显示面板的灰阶值与亮度值的对应关系。对应任意一个灰阶值，在伽玛曲线中均存在与其对应的亮度值。示例性的，显示面板的伽玛值(Gamma)为2.2，伽玛曲线中255灰阶对应的亮度值为430nit。需要说明的是，本申请对显示面板的伽玛值不作限定。在根据显示面板的伽玛曲线，确定实际亮度值对应的第一灰阶值及第一目标亮度值对应的第二灰阶值的步骤中，可以将亮度数据转换为对应的灰阶值数据，并计算第二灰阶值与第一灰阶值的差值，该差值即为第一显示区对应的补偿灰阶值。从而准确的确定第一显示区对应的第一补偿参数，以对第一显示区进行更有效的补偿。
另外，在步骤140中，第一目标亮度值可以为第二显示区的中心点第一灰阶下的亮度值。或者，第一目标亮度值可以为第二显示区在第一灰阶下的平均亮度值。应当理解的是，若第一灰阶画面为单色画面，示例性的， 第一灰阶画面为红色画面，则第二显示区在第一灰阶下的平均亮度值即为第二显示区的各红色子像素在第一灰阶下的平均亮度值。
将第一显示区的第一目标亮度值设置为第二显示区的中心点亮度值或平均亮度值，从而利用第一补偿参数对第一显示区进行亮度补偿时，不仅能够避免第一显示区亮度偏暗，而且能使第一显示区的显示亮度趋于与第二显示区的显示亮度一致，提高显示面板显示亮度的均一性。
在一些可选的实施例中，本申请实施例提供的显示面板的补偿参数确定方法还可以包括步骤151，获取第二显示区在第一灰阶下的第二当前亮度值；以及步骤152，根据第二当前亮度值及第二显示区的第二目标亮度值，确定第二显示区对应的第二补偿参数。
示例性的，第二当前亮度值可以为第二显示区的各像素单元在第一灰阶下的亮度值。示例性的，各像素单元可以包括至少三种颜色的子像素，例如各像素单元包括红色子像素、绿色子像素及蓝色子像素。在步骤151中，第二当前亮度值可以为第二显示区的各颜色的子像素在第一灰阶下的亮度值。示例性的，可以依次确定第二显示区中的各颜色的子像素在第一灰阶下对应的第二补偿参数。
示例性的，第二补偿参数可以是第二补偿灰阶值。步骤152具体可以包括：根据显示面板的伽玛曲线，确定第二当前亮度值对应的第三灰阶值及第二目标亮度值对应的第四灰阶值；计算第四灰阶值与第三灰阶值的差值，得到第二显示区对应的第二补偿参数。
根据本申请实施例，对第二显示区的第二当前亮度值不再进行进一步处理，而是直接根据第二当前亮度值及第二目标亮度值，来确定第二显示区对应的第二补偿参数，避免对第二显示区造成过渡补偿。
另外，在步骤152中，第二目标亮度值可以为第二显示区的中心点第一灰阶下的亮度值。或者，第二目标亮度值可以为第二显示区在第一灰阶下的平均亮度值，从而保证补偿后的第二显示区内的各区域的亮度一致。
在一些可选的实施例中，显示面板100还包括位于第一显示区AA1与第二显示区AA2之间的过渡显示区AA3。示例性的，非显示区NA实际占据的像素行数为88行，而显示面板的IC芯片存储的非显示区NA占据的 像素行数为90行，在实际显示时，IC芯片会始终向非显示区NA的列方向正对的第89-90行的像素提供黑画面数据，而由于拖尾(crosstalk)问题，会使得第一显示区AA1与第二显示区AA2之间存在明显的分界线，即过渡显示区AA3的显示亮度明显与第一显示区AA1及第二显示区AA2的亮度不一致。本申请的申请人发现，在显示面板显示高灰阶画面时，第一显示区AA1与第二显示区AA2之间通常存在偏亮的分界线，在显示面板显示低灰阶画面时，第一显示区AA1与第二显示区AA2之间通常存在偏暗的分界线。并且，本申请的申请人进一步发现，若对过渡显示区AA3的各像素单元均进行灰阶补偿，则会出现过渡补偿的问题，例如，会使偏亮的分界线补偿为偏暗的状态，使偏暗的分界线补偿为偏亮的状态。而灰阶补偿通常只能补偿整数灰阶值，无法满足过渡显示区更为精细的补偿需求。
针对此，本申请实施例提供的显示面板的补偿参数确定方法还可以包括步骤161，获取过渡显示区在第一灰阶下的第三当前亮度值；步骤162，在过渡显示区的像素单元中选取部分像素单元作为目标像素单元，且任意两个相邻的目标像素单元之间间隔有未被选取的像素单元；以及步骤163，根据第三当前亮度值及过渡显示区的第三目标亮度值，确定过渡显示区的各目标像素单元对应的第三补偿参数，并将过渡显示区中未被选取的像素单元的补偿参数设置为0。
示例性的，第三当前亮度值可以为过渡显示区的各像素单元在第一灰阶下的亮度值。示例性的，各像素单元可以包括至少三种颜色的子像素，例如各像素单元包括红色子像素、绿色子像素及蓝色子像素。在步骤161中，第三当前亮度值可以为过渡显示区的各颜色的子像素在第一灰阶下的亮度值。示例性的，可以依次确定过渡显示区中的目标像素单元中各颜色的子像素在第一灰阶下对应的第三补偿参数。
示例性的，第三补偿参数可以是第三补偿灰阶值。步骤163具体可以包括：根据显示面板的伽玛曲线，确定第三当前亮度值对应的第五灰阶值及第三目标亮度值对应的第六灰阶值；计算第六灰阶值与第五灰阶值的差值，得到过渡显示区对应的第三补偿参数。
根据本申请实施例，仅确定过渡显示区中部分目标像素单元对应的第 三补偿参数，另外未被选取的像素单元的补偿参数设置为0，进而可以仅对过渡显示区的部分像素单元进行补偿，进而可以对过渡显示区的全部像素单元平均达到零点几个灰阶的补偿效果，从而实现对过渡显示区更为精细的补偿，以避免对过渡显示区造成过渡补偿。另外，相邻目标像素单元之间间隔有未被选取的像素单元，从而能够对过渡显示区进行均匀的补偿。
另外，在步骤163中，第三目标亮度值可以为第二显示区的中心点第一灰阶下的亮度值。或者，第三目标亮度值可以为第二显示区在第一灰阶下的平均亮度值。将过渡显示区的第三目标亮度值设置为第二显示区的中心点亮度值或平均亮度值，能使过渡显示区的显示亮度趋于与第二显示区的显示亮度一致，提高显示面板显示亮度的均一性。
在一些可选的实施例中，步骤162具体可以包括：在过渡显示区的像素单元中选取部分像素单元作为目标像素单元，使行方向上任意两个相邻的目标像素单元之间间隔有N个未被选取的像素单元，且使列方向上任意两个相邻的目标像素单元之间间隔有N个未被选取的像素单元；其中，N为大于或等于1的正整数。
示例性的，如图6以及图7所示，示出了过渡显示区中4行8列的像素单元。图6及图7仅仅是一个示例，并不代表过渡显示区中像素单元就是图6或图7所示的4行8列。图6以及图7中，以未填充的形状表示未被选取的像素单元NP，以填充的形状表示选取的目标像素单元TP。
请参考图6，可以按照隔单行、隔单列的方式选取目标像素单元TP。图6中，选取第奇数行的第偶数列的像素单元作为目标像素单元TP，以及第偶数行的第奇数列的像素单元作为目标像素单元TP，其余的作为未被选取的像素单元NP。即同一行像素单元中，相邻目标像素单元TP之间间隔一个未被选取的像素单元NP，且同一列像素单元中，相邻目标像素单元TP之间也间隔一个未被选取的像素单元NP。
如图6所示，若每个目标像素单元TP对应的第三补偿参数均为1个灰阶，则对过渡显示区的全部像素单元能够达到0.5个灰阶的补偿效果。
也可以按照隔多行、隔多列的方式选取目标像素单元TP。请参考图7，可以按照隔两行、隔两列的方式选取目标像素单元TP。即同一行像素单元 中，相邻目标像素单元TP之间间隔两个未被选取的像素单元NP，且同一列像素单元中，相邻目标像素单元TP之间也间隔两个未被选取的像素单元NP。
如图7所示，若每个目标像素单元TP对应的第三补偿参数均为1个灰阶，则对过渡显示区的全部像素单元能够达到约0.33个灰阶的补偿效果。
根据本申请实施例，行方向上任意两个相邻的目标像素单元之间间隔的未被选取的像素单元的个数，与列方向上任意两个相邻的目标像素单元之间间隔的未被选取的像素单元的个数相等，如此，能够实现对过渡显示区更为均匀的补偿。
在一些可选的实施例中，本申请实施例提供的补偿参数确定方法还可以包括步骤170：将第一显示区对应的第一补偿参数、第二显示区对应的第二补偿参数以及过渡显示区的各目标像素单元对应的第三补偿参数，存储至显示面板的存储模块中。
如此，在对显示面板进行补偿时，可以直接调用各补偿参数，无需再计算各补偿参数，从而可以避免显示面板的显示延迟，提高用户满意度。
图8示出根据本申请一种实施例提供的显示面板的补偿参数确定装置的结构示意图。显示面板包括非显示区、第一显示区及第二显示区，第一显示区至少部分围绕非显示区。如图8所示，本申请实施例提供的显示面板的补偿参数确定装置可以包括以下模块：
当前亮度获取模块801，用于获取第一显示区在第一灰阶下的第一当前亮度值；
补偿系数确定模块802，也可以称为补偿系数确定电路，用于根据第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数f，0＜f≤1；
实际亮度确定模块802，用于根据第一亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值；
补偿参数确定模块804，用于根据实际亮度值及第一显示区对应的第一目标亮度值，确定第一显示区对应的第一补偿参数。
根据本申请实施例提供的显示面板的补偿参数确定装置，通过获取第 一显示区在第一灰阶下的第一当前亮度值，并根据第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定第一显示区对应的亮度补偿系数，然后根据第一当前亮度值与第一显示区对应的亮度补偿系数的乘积，确定第一显示区的实际亮度值，最后根据得到的实际亮度值以及第一显示区的第一目标亮度值，确定第一显示区的第一补偿参数。根据本申请实施例，通过将第一当前亮度值乘以一个小于或等于1的亮度补偿系数，使得到的第一显示区的实际亮度值小于或等于第一当前亮度值，继而能够对第一显示区进行更高深度的补偿，从而改善第一显示区偏暗的问题，提提高显示面板的显示效果。
在一些可选的实施例中，本申请实施例提供的显示面板的补偿参数确定装置还可以包括对应关系设置模块，用于：
设置多个范围不同的灰阶范围及每个灰阶范围各自对应的亮度补偿系数，且任意相邻两个灰阶范围中的第一灰阶范围对应的亮度补偿系数小于第二灰阶范围对应的亮度补偿系数，第一灰阶范围的最小灰阶值大于第二灰阶范围的最大灰阶值。
在一些可选的实施例中，补偿参数确定模块804具体用于：根据显示面板的伽玛曲线，确定实际亮度值对应的第一灰阶值及第一目标亮度值对应的第二灰阶值；计算第二灰阶值与第一灰阶值的差值，得到第一显示区对应的第一补偿参数。
在一些可选的实施例中，当前亮度获取模块801还用于获取第二显示区在第一灰阶下的第二当前亮度值；补偿参数确定模块804还用于根据第二当前亮度值及第二显示区的第二目标亮度值，确定第二显示区对应的第二补偿参数。
在一些可选的实施例中，显示面板还包括位于第一显示区与第二显示区之间的过渡显示区，当前亮度获取模块801还用于：获取过渡显示区在第一灰阶下的第三当前亮度值；该装置还包括选取模块，用于在过渡显示区的像素单元中选取部分像素单元作为目标像素单元，使任意两个相邻的目标像素单元之间间隔有未被选取的像素单元；补偿参数确定模块804还用于：根据第三亮度值及过渡显示区的第三目标亮度值，确定过渡显示区 的各目标像素单元对应的第三补偿参数，并将过渡显示区中未被选取的像素单元的补偿参数设置为0。
在一些可选的实施例中，选取模块具体用于：
在过渡显示区的像素单元中选取部分像素单元作为目标像素单元，使行方向上任意两个相邻的目标像素单元之间间隔有N个未被选取的像素单元，且使列方向上任意两个相邻的目标像素单元之间间隔有N个未被选取的像素单元；其中，N为大于或等于1的正整数。
在一些可选的实施例中，第一当前亮度值为第一显示区的各像素单元在第一灰阶下的亮度值，第二当前亮度值为第二显示区的各像素单元在第一灰阶下的亮度值，第三当前亮度值为过渡显示区的各像素单元在第一灰阶下的亮度值；第一目标亮度值、第二目标亮度值以及第三目标亮度值均为第二显示区的中心点第一灰阶下的亮度值，或者，第一目标亮度值、第二目标亮度值以及第三目标亮度值均为第二显示区在第一灰阶下的平均亮度值。
在一些可选的实施例中，该装置还可以包括存储控制模块，用于：
将第一显示区对应的第一补偿参数、第二显示区对应的第二补偿参数以及过渡显示区的各目标像素单元对应的第三补偿参数，存储至显示面板的存储模块中。
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指令；该计算机程序指令被处理器执行时实现上述实施例中的任意一种显示面板的补偿参数确定方法。程序或者代码段可以存储在机器可读介质中，或者通过载波中携带的数据信号在传输介质或者通信链路上传送。“机器可读介质”可以包括能够存储或传输信息的任何介质。机器可读介质的例子包括电子电路、半导体存储器设备、ROM、闪存、可擦除ROM(EROM)、软盘、CD-ROM、光盘、硬盘、光纤介质、射频(RF)链路，等等。代码段可以经由诸如因特网、内联网等的计算机网络被下载。根据本申请的实施例，计算机可读存储介质可以是非暂态计算机可读存储介质。
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。

Claims (15)

  1. 一种显示面板的补偿参数确定方法，所述显示面板包括非显示区、第一显示区及第二显示区，所述第一显示区至少部分围绕所述非显示区；
    所述方法包括：
    获取所述第一显示区在第一灰阶下的第一当前亮度值；
    根据所述第一灰阶以及预设的灰阶范围与亮度补偿系数的对应关系，确定所述第一显示区对应的亮度补偿系数f，0＜f≤1；
    根据所述第一当前亮度值与所述第一显示区对应的亮度补偿系数的乘积，确定所述第一显示区的实际亮度值；
    根据所述实际亮度值及所述第一显示区的第一目标亮度值，确定所述第一显示区对应的第一补偿参数。
  2. 根据权利要求1所述的方法，其中，在所述根据所述第一灰阶以及灰阶范围与亮度补偿系数的对应关系，确定所述第一显示区的亮度补偿系数f之前，所述方法还包括：
    设置多个范围不同的所述灰阶范围及每个所述灰阶范围各自对应的所述亮度补偿系数，且任意相邻两个所述灰阶范围中的第一灰阶范围对应的亮度补偿系数小于第二灰阶范围对应的亮度补偿系数，所述第一灰阶范围的最小灰阶值大于所述第二灰阶范围的最大灰阶值。
  3. 根据权利要求1所述的方法，其中，所述根据所述实际亮度值及所述第一显示区的第一目标亮度值，确定所述第一显示区对应的第一补偿参数，包括：
    根据所述显示面板的伽玛曲线，确定所述实际亮度值对应的第一灰阶值及所述第一目标亮度值对应的第二灰阶值；
    计算所述第二灰阶值与所述第一灰阶值的差值，得到所述第一显示区对应的第一补偿参数。
  4. 根据权利要求3所述的方法，其中，所述第一目标亮度值为所述第二显示区的中心点所述第一灰阶下的亮度值，或者，所述第一目标亮度值为所述第二显示区在所述第一灰阶下的平均亮度值。
  5. 根据权利要求1所述的方法，其中，所述方法还包括：
    获取所述第二显示区在所述第一灰阶下的第二当前亮度值；
    根据所述第二当前亮度值及所述第二显示区的第二目标亮度值，确定所述第二显示区对应的第二补偿参数。
  6. 根据权利要求5所述的方法，其中，所述第二目标亮度值为所述第二显示区的中心点所述第一灰阶下的亮度值，或者，所述第二目标亮度值为所述第二显示区在所述第一灰阶下的平均亮度值。
  7. 根据权利要求4所述的方法，其中，所述显示面板还包括位于所述第一显示区与所述第二显示区之间的过渡显示区，所述方法还包括：
    获取所述过渡显示区在所述第一灰阶下的第三当前亮度值；
    在所述过渡显示区的像素单元中选取部分像素单元作为目标像素单元，且任意两个相邻的所述目标像素单元之间间隔有未被选取的像素单元；
    根据所述第三亮度值及所述过渡显示区的第三目标亮度值，确定所述过渡显示区的各所述目标像素单元对应的第三补偿参数，并将所述过渡显示区中未被选取的像素单元的补偿参数设置为0。
  8. 根据权利要求7所述的方法，其中，所述根据所述第三亮度值及所述过渡显示区的第三目标亮度值，确定所述过渡显示区的各所述目标像素单元对应的第三补偿参数，并将所述过渡显示区中未被选取的像素单元的补偿参数设置为0，包括，根据显示面板的伽玛曲线，确定所述第三当前亮度值对应的第五灰阶值及所述第三目标亮度值对应的第六灰阶值；计算第六灰阶值与第五灰阶值的差值，得到所述过渡显示区对应的所述第三补偿参数。
  9. 根据权利要求7所述的方法，其中，所述在所述过渡显示区的像素单元中选取部分像素单元作为目标像素单元，使任意两个相邻的所述目标像素单元之间间隔有未被选取的像素单元，包括：
    在所述过渡显示区的像素单元中选取部分像素单元作为目标像素单元，使行方向上任意两个相邻的所述目标像素单元之间间隔有N个未被选取的像素单元，且使列方向上任意两个相邻的所述目标像素单元之间间隔有N个未被选取的像素单元；其中，N为大于或等于1的正整数。
  10. 根据权利要求7或9所述的方法，其中，所述第一当前亮度值为 所述第一显示区的各像素单元在所述第一灰阶下的亮度值，所述第二当前亮度值为所述第二显示区的各像素单元在所述第一灰阶下的亮度值，所述第三当前亮度值为所述过渡显示区的各像素单元在所述第一灰阶下的亮度值；
    所述第一目标亮度值、所述第二目标亮度值以及所述第三目标亮度值均为所述第二显示区的中心点所述第一灰阶下的亮度值，或者，所述第一目标亮度值、所述第二目标亮度值以及所述第三目标亮度值均为所述第二显示区在所述第一灰阶下的平均亮度值。
  11. 根据权利要求7或9所述的方法，其中，所述方法还包括：
    将所述第一显示区对应的第一补偿参数、所述第二显示区对应的第二补偿参数以及所述过渡显示区的各所述目标像素单元对应的第三补偿参数，存储至所述显示面板的存储模块中。
  12. 一种显示面板的补偿参数确定装置，所述显示面板包括非显示区、第一显示区及第二显示区，所述第一显示区至少部分围绕所述非显示区；
    所述装置包括：
    当前亮度获取模块，用于获取所述第一显示区在第一灰阶下的第一当前亮度值；
    补偿系数确定模块，用于根据所述第一灰阶以及灰阶范围与亮度补偿系数的对应关系，确定所述第一显示区对应的亮度补偿系数f，0＜f≤1；
    实际亮度确定模块，用于根据所述第一亮度值与所述第一显示区对应的亮度补偿系数的乘积，确定所述第一显示区的实际亮度值；
    补偿参数确定模块，用于根据所述实际亮度值及所述第一显示区对应的第一目标亮度值，确定所述第一显示区对应的第一补偿参数。
  13. 根据权利要求12所述的显示面板的补偿参数确定装置，其中，所述显示面板还包括位于所述第一显示区与所述第二显示区之间的过渡显示区；
    所述亮度值获取模块还用于：获取所述过渡显示区在所述第一灰阶下的第三当前亮度值；
    所述装置还包括选取模块，用于在所述过渡显示区的像素单元中选取 部分像素单元作为目标像素单元，使任意两个相邻的所述目标像素单元之间间隔有未被选取的像素单元；
    补偿参数确定模块还用于：根据所述第三亮度值及所述过渡显示区的第三目标亮度值，确定所述过渡显示区的各所述目标像素单元对应的第三补偿参数，并将所述过渡显示区中未被选取的像素单元的补偿参数设置为0。
  14. 根据权利要求12所述的显示面板的补偿参数确定装置，还可以包括对应关系设置模块，用于：
    设置多个范围不同的灰阶范围及每个灰阶范围各自对应的亮度补偿系数，且任意相邻两个灰阶范围中的第一灰阶范围对应的亮度补偿系数小于第二灰阶范围对应的亮度补偿系数，第一灰阶范围的最小灰阶值大于第二灰阶范围的最大灰阶值。
  15. 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；所述计算机程序指令被处理器执行时实现权利要求1-11任一项所述的显示面板的补偿参数确定方法。
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