CN115440156A - Brightness compensation method and device and display device - Google Patents
Brightness compensation method and device and display device Download PDFInfo
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- 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
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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
- G09G2300/00—Aspects of the constitution of display devices
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Abstract
The application discloses a luminance compensation method and device and a display device of a spliced display panel, the luminance compensation method carries out the same compensation on at least two display panels and sub-display panels which are spliced, so that the luminance uniformity between different display panels is ensured, then the luminance compensation is carried out on the sub-display panels according to the luminance data of the display panels, the luminance uniformity between the sub-display panels and the display panels is ensured, and therefore the problem of poor luminance of the spliced display panels can be solved.
Description
Technical Field
The application relates to the technical field of display, in particular to a brightness compensation method and device for a spliced display panel and a display device.
Background
In the existing LCD splicing display panel, for eliminating the shadow of the splicing seam of the splicing display panel, an MINI LED lamp panel is adopted as the light source of the splicing seam display area, so that the picture of the splicing display panel is relatively coherent, and the seamless splicing of the splicing display panel is realized. However, due to the difference between the light emitting wavelengths of the LCD display panel and the MINI LED lamp panel and the difference between the light emitting wavelengths of the LCD display panel and the MINI LED lamp panel in terms of physical structures, the image quality of the splicing seam display area and the image quality of the LCD display area are greatly different, and therefore the impression effect of the splicing display panel is affected. In order to improve the image quality difference between the splicing seam display area and the LCD display area, a brightness compensation technology is introduced to improve the image quality of the splicing seam display area, and meanwhile, the LCD display area is also subjected to brightness compensation to improve the inter-sheet difference.
The existing brightness compensation method is to separately perform brightness compensation on the splicing seam display area and the LCD display area, the method cannot repair the brightness difference between different LCD display areas and between the LCD display area and the splicing seam display area, and the image quality of the LCD splicing display panel still needs to be further improved.
Disclosure of Invention
The application provides a brightness compensation method and device of a spliced display panel and a display device, and aims to solve the problem of poor brightness of the spliced display panel.
The application provides a luminance compensation method of a spliced display panel, the spliced display panel comprises at least two display panels and sub-display panels, the display panels are spliced and arranged, a splicing seam is arranged between the display panels, the display panels are respectively a first display panel and a second display panel, the sub-display panels cover the splicing seam, and the luminance compensation method comprises the following steps:
performing brightness compensation on the display panel;
obtaining first brightness data of a first pixel area on the first display panel and second brightness data of a second pixel area on the second display panel, wherein a virtual straight line passes through the first pixel area and the second pixel area, and the virtual straight line is perpendicular to the sub-display panels;
obtaining brightness compensation data according to the first brightness data of the first pixel area and the second brightness data of the second pixel area;
and performing brightness compensation on the sub-display panel according to the brightness compensation data.
Optionally, in some embodiments of the present application, a central line of the first pixel region and the second pixel region is perpendicular to the sub display panel.
Optionally, in some embodiments of the present application, the step of obtaining luminance compensation data according to the first luminance data of the first pixel region and the second luminance data of the second pixel region includes:
obtaining first brightness data of the first pixel area and second brightness data of the second pixel area to obtain a brightness average value of brightness compensation data;
the brightness average value is brightness compensation data.
Optionally, in some embodiments of the present application, after the step of performing brightness compensation on the sub-display panel according to the brightness compensation data, the brightness compensation method further includes:
acquiring third brightness data of the first pixel area or the second pixel area after brightness compensation is carried out on the sub-display panel;
obtaining a brightness change parameter according to the third brightness data and the first brightness data or the second brightness data of the first pixel region or the second pixel region;
obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data;
and performing brightness compensation on the sub-display panel according to the secondary brightness compensation value.
Optionally, in some embodiments of the present application, the brightness variation parameter is a difference between third brightness data and first brightness data or second brightness data of the first pixel region or the second pixel region;
the step of obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data includes:
and adding the brightness change parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel.
Optionally, in some embodiments of the present application, the brightness variation parameter is a ratio between third brightness data and first brightness data or second brightness data of the first pixel region or the second pixel region;
the step of obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data includes:
and multiplying the brightness change parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel.
Optionally, in some embodiments of the present application, the obtaining of first luminance data of a first pixel region on the first display panel and second luminance data of a second pixel region on the second display panel includes:
acquiring at least one pair of pixel regions, each pair of pixel regions including the first pixel region and the second pixel region, the at least one pair of pixel regions being disposed along a length direction of the sub display panel;
first luminance data of the first pixel region and second luminance data of the second pixel region in at least one pair of the pixel regions are acquired.
Optionally, in some embodiments of the application, the step of obtaining the luminance compensation data according to the first luminance data of the first pixel region and the second luminance data of the second pixel region includes:
obtaining a luminance average value of first luminance data and second luminance data of at least one pair of the pixel regions;
obtaining a brightness walking line according to a brightness average value of the first brightness data and the second brightness data of at least one pair of the pixel regions, wherein the brightness walking line is a relation walking line of the brightness of the pixel regions and the pixel regions distributed along the length direction of the sub display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the sub-display panel according to the brightness trend line.
Optionally, in some embodiments of the present application, the step of obtaining luminance compensation data according to the first luminance data of the first pixel region and the second luminance data of the second pixel region includes:
obtaining at least one interpolation brightness value of the sub-display panel by utilizing a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of the pixel regions;
obtaining a brightness trend line according to at least one interpolation brightness value, wherein the brightness trend line is a relationship trend line of the brightness of pixel regions and pixel regions distributed along the length direction of the sub display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the sub-display panel according to the brightness trend line.
Optionally, in some embodiments of the present application, the sub-display panel includes at least two splicing seam sub-regions, and the at least two splicing seam sub-regions are sequentially arranged along a central connection line direction of the first pixel region and the second pixel region;
the step of obtaining the luminance compensation data according to the first luminance data of the first pixel region and the second luminance data of the second pixel region includes:
obtaining at least one interpolation brightness value of at least two splicing seam sub-regions by utilizing a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of pixel regions;
obtaining a brightness walking line of each splicing seam sub-region according to at least one interpolation brightness value of each splicing seam sub-region, wherein the brightness walking line is a relation walking line of the brightness of pixel regions and pixel regions distributed along the length direction of the sub-display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the splicing seam sub-region according to the brightness trend line.
Correspondingly, this application still provides a brightness compensation device, the concatenation display panel includes display panel and the sub-display panel that two at least concatenations set up, and two concatenations set up have the concatenation seam between the display panel, and the display panel that two concatenations set up is first display panel and second display panel respectively, sub-display panel covers the concatenation seam, brightness compensation device includes:
the first compensation module is used for performing brightness compensation on the display panel;
a luminance obtaining module, configured to obtain first luminance data of a first pixel region on the first display panel and second luminance data of a second pixel region on the second display panel, where a virtual straight line passes through the first pixel region and the second pixel region, and the virtual straight line is perpendicular to the sub-display panel;
the calculation module is used for obtaining brightness compensation data according to the first brightness data of the first pixel area and the first brightness data of the second pixel area;
and the second compensation module is used for performing brightness compensation on the sub-display panel according to the brightness compensation data.
Correspondingly, the present application also provides a display device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps in the brightness compensation method.
The application provides a luminance compensation method and device, display device of concatenation display panel, concatenation display panel includes display panel and the sub-display panel of two at least concatenation settings, and two concatenation settings have a concatenation seam between the display panel, and the display panel of two concatenation settings is first display panel and second display panel respectively, sub-display panel covers the concatenation seam, the luminance compensation method includes: performing brightness compensation on the display panel; obtaining first brightness data of a first pixel area on the first display panel and second brightness data of a second pixel area on the second display panel, wherein a virtual straight line passes through the first pixel area and the second pixel area, and the virtual straight line is perpendicular to the sub-display panels; obtaining brightness compensation data according to the first brightness data of the first pixel area and the second brightness data of the second pixel area; and performing brightness compensation on the sub-display panel according to the brightness compensation data. This application carries out same compensation through display panel and the sub display panel to two at least concatenation settings to guarantee the luminance homogeneity between the different display panels, then again according to display panel's luminance data carries out luminance compensation to sub display panel, thereby guarantees the luminance homogeneity between sub display panel and the display panel, consequently can solve the poor problem of luminance of concatenation display panel.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to derive other drawings without creative efforts.
FIG. 1 is a schematic view of a tiled display panel of the present application;
FIG. 2 is a flowchart illustrating a first embodiment of a brightness compensation method according to the present application;
fig. 3 is a flowchart of a first embodiment of the S30 step of the brightness compensation method provided in the present application;
FIG. 4 is a flowchart illustrating a second embodiment of a brightness compensation method according to the present application;
fig. 5 is a flowchart of the S20 step of the brightness compensation method provided in the present application;
FIG. 6 is a first schematic view of a tiled display panel 100 according to the present application;
FIG. 7 is a second schematic view of a tiled display panel according to the present application;
fig. 8 is a flowchart of a second embodiment of a step S30 of the brightness compensation method provided in the present application;
FIG. 9 is a schematic diagram of luminance lines of a first pixel region, a second pixel region and a sub-display panel according to the present application;
fig. 10 is a flowchart of a third embodiment of the S30 step of the brightness compensation method provided in the present application;
fig. 11 is a flowchart of a fourth embodiment of the S30 step of the brightness compensation method provided in the present application;
FIG. 12 is a third schematic view of a tiled display panel of the present application;
fig. 13 is a schematic diagram of a luminance compensation apparatus provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The present application provides a brightness compensation method and apparatus for a tiled display panel, and a display apparatus, which are described in detail below. The order of description of the following examples is not intended to limit the order in which the examples of this application are described.
Referring to fig. 1 to fig. 2, fig. 1 is a schematic diagram of a tiled display panel 100 according to the present application, and fig. 2 is a flowchart of a first embodiment of a brightness compensation method according to the present application. The application provides a brightness compensation method of a spliced display panel 100, the spliced display panel 100 comprises at least two display panels 10 and sub-display panels 20 which are spliced and arranged, a splicing seam 30 is arranged between the two display panels 10, the two display panels 10 which are spliced and arranged are respectively a first display panel 11 and a second display panel 12, and the sub-display panels 20 cover the splicing seam 30.
In some embodiments, the display panel 10 is a liquid crystal display panel or an OLED display panel, and the sub-display panel 20 is a backlight liquid crystal display panel or a MINI LED direct display panel.
The brightness compensation method includes the steps of:
and S10, performing brightness compensation on the display panel 10. Specifically, the existing luminance compensation technology is adopted to perform luminance compensation on the display panel 10 and the sub-display panel 20 which are arranged in at least two splicing ways. The same compensation is performed on at least two display panels 10 arranged in a spliced manner and the sub-display panels 20, so that the brightness uniformity among different display panels 10 is ensured.
S20, obtaining first luminance data of a first pixel region 111 on the first display panel 11 and second luminance data of a second pixel region 121 on the second display panel 12, where a virtual straight line L passes through the first pixel region 111 and the second pixel region 121, and the virtual straight line L is perpendicular to the sub-display panel 20.
After performing brightness compensation on at least two spliced display panels 10, obtaining first brightness data of a first pixel area 111 on the first display panel 11 and second brightness data of a second pixel area 121 on the second display panel 12, where partial areas of the first pixel area 111 and the second pixel area 121 are located in the same horizontal line, which can ensure that the first brightness data and the second brightness data are brightness of pixels extending along the same horizontal line, and is beneficial to ensuring uniformity of brightness compensation.
Further, in some embodiments, a central line connecting the first pixel region 111 and the second pixel region 121 is perpendicular to the sub-display panel 20.
S30, obtaining luminance compensation data according to the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121.
And S40, performing brightness compensation on the sub-display panel 20 according to the brightness compensation data.
That is, in the present application, the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 after luminance compensation are obtained, and then luminance compensation is performed on the sub-display panel 20 according to the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 after luminance compensation, so that luminance uniformity between the sub-display panel 20 and the display panel 10 is ensured, and therefore, the problem of luminance difference of the tiled display panel 100 can be solved.
In addition, the tiled display panel 100 includes at least one tiled seam 30. In some embodiments, the tiled display panel 100 includes at least two tiles 30, one of the at least two tiles 30 is a main tile, and the other of the at least two tiles 30 is an auxiliary tile, and the tiles include the main tile and the auxiliary tile, and the main tile intersects with all of the auxiliary tiles perpendicularly, and the auxiliary tiles are arranged in parallel. The main splicing seam is provided with a main sub display panel, the auxiliary splicing seam is provided with an auxiliary sub display panel, the main sub display panel and the auxiliary sub display panel are provided with an overlapping area, and the overlapping area carries out brightness compensation by adopting brightness compensation data the same as that of the main sub display panel or the auxiliary sub display panel.
Referring to fig. 3, fig. 3 is a flowchart illustrating a first embodiment of the step S30 of the brightness compensation method according to the present application. In some embodiments of the present invention, the,
the step of S30 includes:
s31, obtaining first luminance data of the first pixel region 111 and second luminance data of the second pixel region 121 to obtain a luminance average of luminance compensation data;
and S32, the brightness average value is brightness compensation data.
That is, according to the present application, by obtaining the luminance average value of the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121, and then performing luminance compensation on the sub display panel 20 according to the luminance average value of the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121, since the first display panel 11 and the second display panel 12 are respectively located at two sides of the sub display panel 20, the luminance between the first display panel 11, the sub display panel 20, and the second display panel 12 may be excessive and more natural, and have better uniformity.
Referring to fig. 4, fig. 4 is a flowchart illustrating a luminance compensation method according to a second embodiment of the present disclosure. After the step S40, the brightness compensation method further includes:
s50, acquiring third luminance data of the first pixel region 111 or the second pixel region 121 after performing luminance compensation on the sub-display panel 20;
s60, obtaining a luminance change parameter according to the third luminance data and the first luminance data or the second luminance data of the first pixel region 111 or the second pixel region 121;
s70, obtaining a secondary brightness compensation value of the sub-display panel 20 according to the brightness change parameter and the brightness compensation data;
and S80, performing brightness compensation on the sub-display panel 20 according to the secondary brightness compensation value.
In some embodiments, the luminance compensation data may be a luminance average value of the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121.
That is, in the present application, after performing brightness compensation on the display panel 10 and the sub-display panel 20, when the brightness of the display panel 10 changes, at this time, only the third brightness data of the display panel 10 after performing brightness compensation on the sub-display panel 20 needs to be obtained, then the brightness change parameter is obtained according to the third brightness data and the first brightness data or the second brightness data of the first pixel region 111 or the second pixel region 121, the secondary brightness compensation value of the sub-display panel 20 is obtained according to the brightness change parameter and the brightness compensation data, and finally the brightness compensation is performed on the sub-display panel 20 according to the secondary brightness compensation value, so that the number of data required to be obtained in the whole process is small, that the synchronous brightness compensation between the sub-display panel 20 and the display panel 10 can be realized, and the work efficiency and the brightness uniformity of the tiled display panel 100 can be improved.
In some embodiments, the luminance change parameter is a difference value between third luminance data and first luminance data or second luminance data of the first pixel region 111 or the second pixel region 121;
the step S70 includes:
and adding the brightness variation parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel 20.
In other embodiments, the luminance variation parameter is a ratio between third luminance data and first luminance data or second luminance data of the first pixel region 111 or the second pixel region 121;
the step S70 includes:
and multiplying the brightness change parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel 20.
Referring to fig. 5, fig. 5 is a flowchart of the step S20 of the brightness compensation method provided in the present application. The step S20 includes:
s21, obtaining at least one pair of pixel regions, each pair of pixel regions including the first pixel region 111 and the second pixel region 121, at least one pair of pixel regions being disposed along a length direction of the sub-display panel 20;
s22, acquiring first luminance data of the first pixel region 111 and second luminance data of the second pixel region 121 in at least one pair of the pixel regions.
The present application may obtain a pair of pixel regions or a plurality of pairs of pixel regions, where each pair of pixel regions includes the first pixel region 111 and the second pixel region 121, and may be specifically set according to actual needs, and of course, the more the number of pairs of the obtained pixel regions is, the better the brightness compensation effect is.
In addition, the first pixel region 111 may include one sub-pixel or a plurality of sub-pixels, and the second region 120 may include one sub-pixel or a plurality of sub-pixels.
Referring to fig. 6, fig. 6 is a first schematic view of a tiled display panel 100 according to the present application. In some embodiments, the first pixel region 111 includes one sub-pixel, and the second pixel region 121 includes one sub-pixel, and at this time, the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 are obtained, that is, the first luminance data of the sub-pixel of the first pixel region 111 is obtained, the luminance data of the sub-pixel of the second pixel region 121 is obtained, and the luminance data of the sub-pixel of the second pixel region 121 is obtained.
Referring to fig. 7, fig. 7 is a second schematic view of the tiled display panel 100 of the present application. In some embodiments, the first pixel region 111 includes a plurality of sub-pixels, and the second pixel region 121 includes a plurality of sub-pixels, and when the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 are obtained, the luminance data of one sub-pixel in the first pixel region 111 may be obtained to obtain the luminance data of one sub-pixel in the first pixel region 111. The average luminance values of the plurality of sub-pixels in the second pixel region 121 may be obtained in order to obtain the average luminance values of the plurality of sub-pixels in the first pixel region 111.
Referring to fig. 8, fig. 8 is a flowchart illustrating a second embodiment of the step S30 of the brightness compensation method provided in the present application. The step S30 includes:
s33, obtaining the brightness average value of the first brightness data and the second brightness data of at least one pair of pixel regions;
s34, obtaining a brightness trend line according to the brightness average value of the first brightness data and the second brightness data of at least one pair of pixel regions, wherein the brightness trend line is a relation trend line of the brightness of the pixel regions and the pixel regions distributed along the length direction of the sub-display panel 20;
the step S40 includes:
and performing brightness compensation on the sub display panel 20 according to the brightness trend line.
That is, after the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 in at least one pair of the pixel regions are obtained, the luminance average value of each pair of the pixel regions is obtained according to the first luminance data and the second luminance data of at least one pair of the pixel regions, if there is only one pair of the pixel regions, the luminance average value of the pair of the pixel regions is the luminance value of the luminance trend line, and at this time, the sub display panel 20 performs luminance compensation by using the same luminance compensation value along the length direction of the sub display panel 20.
Referring to fig. 9, fig. 9 is a schematic diagram illustrating luminance trend lines of the first pixel region 111, the second pixel region 121 and the sub-display panel 20 according to the present disclosure. If there are a plurality of pairs of the pixel regions, the number of the luminance average values is a plurality, and the plurality of luminance average values may be the same value or different values, and are calculated and obtained according to actual luminance data. When the plurality of luminance average values are not all the same values, the plurality of luminance average values are distributed along the length direction of the sub-display panel 20, then a straight line or a smooth curve is adopted to connect the plurality of luminance average values to obtain a luminance walking potential line, the luminance walking potential line is a curve, the luminance walking potential line takes the length direction of the sub-display panel 20 as an X axis, the luminance value is taken as a Y axis, then a pixel point on the sub-display panel 20 is taken, a coordinate value X on the X axis is obtained according to the coordinate value X on the luminance walking potential line, the luminance value Y of the pixel point on the sub-display panel 20 is finally set as Y, and the luminance compensation is performed on the sub-display panel 20. The above steps are repeated until all the pixels of the sub-display panel 20 complete the brightness compensation.
Therefore, the more the logarithm of the pixel region is, the better the brightness compensation effect is.
Referring to fig. 6 and 7, still further, the first display panel 11 includes a first region 110 adjacent to the sub-display panel 20, the first pixel region 111 is located in the first region 110, and a width of the first region 110 is smaller than or equal to a width of the sub-display panel 20. The second display panel 12 includes a second region 120 adjacent to the sub-display panel 20, the second pixel region 121 is located in the second region 120, and the width of the second region 120 is smaller than or equal to the width of the sub-display panel 20. Further, the first pixel region 111 is adjacent to the sub-display panel 20, and the second pixel region 121 is adjacent to the sub-display panel 20.
That is, the first pixel region 111 is disposed in the first region 110 where the first display panel 11 is adjacent to the sub-display panel 20, and the second pixel region 121 is disposed in the second region 120 where the second display panel 12 is adjacent to the sub-display panel 20, because the first region 110 and the second region 120 are respectively adjacent to the sub-display panel 20, and the first region 110 and the second region 120 are used as luminance reference points, the luminance transition among the first display panel 11, the sub-display panel 20, and the second display panel 12 can be more natural and have better uniformity.
Referring to fig. 10, fig. 10 is a flowchart illustrating a third embodiment of the step S30 of the brightness compensation method according to the present application. In some embodiments, the S30 step includes:
s35, obtaining at least one compensation brightness value of the sub-display panel 20 by using a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of the pixel regions;
s36, obtaining a brightness trend line according to at least one compensation brightness value, wherein the brightness trend line is a relationship trend line of brightness of pixel regions and pixel regions distributed along the length direction of the sub-display panel 20;
the step S40 includes:
and performing brightness compensation on the sub display panel 20 according to the brightness trend line.
That is, after the first luminance data of the first pixel region 111 and the second luminance data of the second pixel region 121 in at least one pair of the pixel regions are obtained, the compensation luminance value of each pair of the pixel regions is obtained by using a linear interpolation method according to the first luminance data and the second luminance data of at least one pair of the pixel regions, if there is only one pair of the pixel regions, the compensation luminance value of the pair of the pixel regions is the luminance value of the luminance trend line, and at this time, the sub-display panel 20 performs luminance compensation by using the same luminance compensation value along the length direction of the sub-display panel 20.
When there are a plurality of pairs of pixel regions, a plurality of pairs of compensation brightness values of the pixel regions are obtained respectively, the compensation brightness values of the plurality of pairs of pixel regions are distributed along the length direction of the sub-display panel 20, then the compensation brightness values of the plurality of pairs of pixel regions are connected through a connecting line to form a brightness trend line, and then the sub-display panel 20 is subjected to brightness compensation according to the brightness trend line, so that the more the pairs of the pixel regions are, the better the brightness compensation effect is.
Specifically, when the plurality of luminance compensation values are not all the same values, the plurality of luminance compensation values are distributed along the length direction of the sub display panel 20, then a straight line or a smooth curve is used to connect the plurality of luminance compensation values to obtain a luminance walking line, the luminance walking line is a curve, the luminance walking line takes the length direction of the sub display panel 20 as an X axis, the luminance value is a Y axis, then a coordinate value X of a pixel point on the sub display panel 20 on the X axis is taken, a luminance value Y of the pixel point on the sub display panel 20 is obtained according to the coordinate value X on the luminance walking line, and finally the luminance of the pixel point on the sub display panel 20 is set as Y, that is, the luminance compensation is performed on the sub display panel 20. The above steps are repeated until all the pixels of the sub-display panel 20 complete the brightness compensation.
Since the linear interpolation method to obtain the compensation brightness value of each pair of first brightness data represents the distance relationship between the sub-display panel 20 and the first and second pixel regions 111 and 121, the progress brightness compensation using the compensation brightness value obtained by the linear interpolation method is more accurate than the progress brightness compensation using the brightness average value of the pixel region.
Referring to fig. 11 and 12, fig. 11 is a flowchart illustrating a fourth embodiment of the step S30 of the brightness compensation method according to the present application, and fig. 12 is a third schematic diagram illustrating a tiled display panel 100 according to the present application. In some embodiments, the sub-display panel 20 includes at least two splicing seam sub-regions 201, and at least two splicing seam sub-regions 201 are sequentially arranged along a central connection line direction of the first pixel region 111 and the second pixel region 121;
the step S30 includes:
s37, obtaining at least one compensation brightness value of at least two splicing seam sub-regions 201 by utilizing a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of pixel regions;
s38, obtaining a brightness walking line of each splicing seam sub-region 201 according to at least one interpolation brightness value of each splicing seam sub-region 201, wherein the brightness walking line is a relation walking line of the brightness of pixel regions and pixel regions distributed along the length direction of the sub-display panel 20;
the step S40 includes:
and performing brightness compensation on the splicing seam sub-region 201 according to the brightness trend line.
That is, in the present application, the sub-display panel 20 is divided into at least two splicing seam sub-regions 201, then at least one interpolation brightness value of the at least two splicing seam sub-regions 201 is obtained by using a linear interpolation method, and then a brightness trend line of each splicing seam sub-region 201 is obtained according to the at least one interpolation brightness value of each splicing seam sub-region 201, so that the interpolation brightness values of each splicing seam sub-region 201 are different, and thus the accuracy of the brightness compensation effect of the sub-display panel 20 can be improved, and the display effect of the splicing display panel 100 is improved.
For example, the sub-display panel 20 is divided into 2 splicing seam sub-regions 201, the first luminance data of the first pixel region 111 of a pair of the pixel regions is 50nit, the second luminance data of the second pixel region 121 of a pair of the pixel regions is 100nit, and the interpolation luminance values of the 2 splicing seam sub-regions 201 obtained according to the linear interpolation method are 66nit and 82nit, respectively. When there are a plurality of pairs of pixel regions, a linear interpolation method is used to obtain a plurality of interpolation brightness values of each splicing seam region 201, the plurality of interpolation brightness values are distributed along the length direction of the sub-display panel 20, then the plurality of interpolation brightness values are connected through a connecting line to form a brightness trend line, and then the sub-display panel 20 is subjected to brightness compensation according to the brightness trend line, so that the more the logarithm of the pixel region is, the better the brightness compensation effect is.
Specifically, when the plurality of interpolation brightness values of each of the splicing seam sub-regions 201 are not all the same values, the plurality of interpolation brightness values of each of the splicing seam sub-regions 201 are distributed and set along the length direction of the sub-display panel 20 at this time, then a straight line or a smooth curve is adopted to connect the plurality of interpolation brightness values to obtain a brightness walking potential line, at this time, the brightness walking potential line is a curve, the brightness walking potential line takes the length direction along the sub-display panel 20 as an X axis, the brightness value is a Y axis, then a coordinate value X of a pixel point of each of the splicing seam sub-regions 201 on the X axis is taken, a brightness value Y of a pixel point on each of the splicing seam sub-regions 201 is obtained according to the brightness walking potential line of the coordinate value X, and finally the brightness of the pixel point on each of the splicing seam sub-region 201 is set as Y, that is, the brightness compensation is performed on each of the splicing seam sub-regions 201. And repeating the steps until all the pixel points of each splicing seam sub-region 201 complete brightness compensation.
Referring to fig. 13, fig. 13 is a schematic view of a brightness compensation apparatus provided in the present application, and an embodiment of the present application further provides a brightness compensation apparatus of a display panel 10, where the tiled display panel 100 includes at least two tiled display panels 10 and a sub-display panel 20, a tiled seam 30 is provided between the two tiled display panels 10, the two tiled display panels 10 are a first display panel 11 and a second display panel 12, respectively, and the sub-display panel 20 covers the tiled seam 30, and includes: a first compensation module 301, a brightness acquisition module 302, a calculation module 303 and a second compensation module 304.
The first compensation module 301 is configured to perform brightness compensation on the display panel 10; the luminance obtaining module 302 is configured to obtain first luminance data of a first pixel region 111 on the first display panel 11 and second luminance data of a second pixel region on the second display panel 12, where a virtual straight line L passes through the first pixel region 111 and the second pixel region 121, and the virtual straight line L is perpendicular to the sub-display panel 20; the calculating module 303 is configured to obtain luminance compensation data according to the first luminance data of the first pixel region 111 and the first luminance data of the second pixel region 121; the second compensation module 304 is configured to perform brightness compensation on the sub-display panel 20 according to the brightness compensation data.
The embodiment of the present application further provides a display device, where the display device includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the steps in the brightness compensation method.
Specifically, in the embodiment of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be another general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DRRAM).
The method and the device for compensating the brightness of the tiled display panel and the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. The brightness compensation method for the spliced display panel is characterized in that the spliced display panel comprises at least two display panels and sub-display panels which are spliced, a splicing seam is formed between the two display panels which are spliced, the two display panels which are spliced are respectively a first display panel and a second display panel, the sub-display panels cover the splicing seam, and the brightness compensation method comprises the following steps:
performing brightness compensation on the display panel;
obtaining first brightness data of a first pixel area on the first display panel and second brightness data of a second pixel area on the second display panel, wherein a virtual straight line passes through the first pixel area and the second pixel area, and the virtual straight line is perpendicular to the sub-display panels;
obtaining brightness compensation data according to the first brightness data of the first pixel area and the second brightness data of the second pixel area;
and performing brightness compensation on the sub-display panel according to the brightness compensation data.
2. The luminance compensation method as claimed in claim 1, wherein a central line of the first pixel region and the second pixel region is perpendicular to the sub display panel.
3. The luminance compensation method according to claim 1, wherein the step of obtaining the luminance compensation data from the first luminance data of the first pixel region and the second luminance data of the second pixel region comprises:
obtaining first brightness data of the first pixel area and second brightness data of the second pixel area to obtain a brightness average value of brightness compensation data;
the brightness average value is brightness compensation data.
4. The luminance compensation method as claimed in claim 1, wherein after the step of luminance compensating the sub display panel according to the luminance compensation data, the luminance compensation method further comprises:
acquiring third brightness data of the first pixel area or the second pixel area after brightness compensation is carried out on the sub-display panel;
obtaining a brightness change parameter according to third brightness data and first brightness data or second brightness data of the first pixel area or the second pixel area;
obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data;
and performing brightness compensation on the sub-display panel according to the secondary brightness compensation value.
5. The luminance compensation method according to claim 4,
the brightness variation parameter is a difference value between third brightness data and first brightness data or second brightness data of the first pixel region or the second pixel region;
the step of obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data includes:
and adding the brightness change parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel.
6. The luminance compensation method according to claim 4,
the brightness variation parameter is a ratio between third brightness data and first brightness data or second brightness data of the first pixel region or the second pixel region;
the step of obtaining a secondary brightness compensation value of the sub-display panel according to the brightness change parameter and the brightness compensation data includes:
and multiplying the brightness change parameter and the brightness compensation data to obtain a secondary brightness compensation value of the sub-display panel.
7. The luminance compensation method according to claim 1, wherein the step of obtaining first luminance data of a first pixel region on the first display panel and second luminance data of a second pixel region on the second display panel comprises:
acquiring at least one pair of pixel regions, each pair of pixel regions including the first pixel region and the second pixel region, the at least one pair of pixel regions being disposed along a length direction of the sub display panel;
first luminance data of the first pixel region and second luminance data of the second pixel region in at least one pair of the pixel regions are acquired.
8. The luminance compensation method according to claim 7, wherein the step of obtaining the luminance compensation data based on the first luminance data of the first pixel region and the second luminance data of the second pixel region comprises:
obtaining a luminance average value of first luminance data and second luminance data of at least one pair of the pixel regions;
obtaining a luminance trend line according to a luminance average value of first luminance data and second luminance data of at least one pair of the pixel regions, wherein the luminance trend line is a relationship trend line of luminance of the pixel regions and pixel regions distributed along the length direction of the sub display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the sub-display panel according to the brightness trend line.
9. The luminance compensation method according to claim 7, wherein the step of obtaining the luminance compensation data based on the first luminance data of the first pixel region and the second luminance data of the second pixel region comprises:
obtaining at least one interpolation brightness value of the sub-display panel by utilizing a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of the pixel regions;
obtaining a brightness trend line according to at least one interpolation brightness value, wherein the brightness trend line is a relation trend line of the brightness of pixel regions and pixel regions distributed along the length direction of the sub display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the sub-display panel according to the brightness trend line.
10. The luminance compensation method according to claim 7, wherein the sub-display panel comprises at least two splicing seam sub-regions, and the at least two splicing seam sub-regions are sequentially arranged along a central connecting line direction of the first pixel region and the second pixel region;
the step of obtaining the luminance compensation data according to the first luminance data of the first pixel region and the second luminance data of the second pixel region includes:
obtaining at least one interpolation brightness value of at least two splicing seam sub-regions by utilizing a linear interpolation method according to the first brightness data and the second brightness data of at least one pair of pixel regions;
obtaining a brightness walking line of each splicing seam sub-region according to at least one interpolation brightness value of each splicing seam sub-region, wherein the brightness walking line is a relation walking line of the brightness of pixel regions and pixel regions distributed along the length direction of the sub-display panel;
the step of performing brightness compensation on the sub-display panel according to the brightness compensation data includes:
and performing brightness compensation on the splicing seam sub-region according to the brightness trend line.
11. The utility model provides a tiled display panel's brightness compensation arrangement, tiled display panel includes display panel and the sub-display panel of two at least concatenation settings, and two concatenations set up have the concatenation seam between the display panel, and the display panel of two concatenation settings is first display panel and second display panel respectively, sub-display panel covers the concatenation seam, its characterized in that includes:
the first compensation module is used for performing brightness compensation on the display panel;
a brightness obtaining module, configured to obtain first brightness data of a first pixel area on the first display panel and second brightness data of a second pixel area on the second display panel, where a virtual straight line passes through the first pixel area and the second pixel area, and the virtual straight line is perpendicular to the sub-display panel;
the calculation module is used for obtaining brightness compensation data according to the first brightness data of the first pixel area and the first brightness data of the second pixel area;
and the second compensation module is used for performing brightness compensation on the sub-display panel according to the brightness compensation data.
12. A display device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the brightness compensation method according to any one of claims 1 to 10.
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