CN117275384A - Optical data determining method and device - Google Patents

Optical data determining method and device Download PDF

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Publication number
CN117275384A
CN117275384A CN202311254231.0A CN202311254231A CN117275384A CN 117275384 A CN117275384 A CN 117275384A CN 202311254231 A CN202311254231 A CN 202311254231A CN 117275384 A CN117275384 A CN 117275384A
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China
Prior art keywords
pixel
sub
optical data
display panel
extraction
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王洪宇
姜海斌
韩冲
吕明
王森
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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Priority to CN202311254231.0A priority Critical patent/CN117275384A/en
Publication of CN117275384A publication Critical patent/CN117275384A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the invention discloses an optical data determining method and device, which are used for determining the actual optical data corresponding to a target sub-pixel in a first preset gray level according to the initial optical data and a preset rule corresponding to each sub-pixel in an extraction pixel group corresponding to the target sub-pixel in a display panel by acquiring the initial optical data corresponding to each sub-pixel in the first preset gray level of the display panel, so that the actual optical data corresponding to each sub-pixel in the display panel can be obtained directly according to the initial optical data and the preset rule in the white screen after the white screen of the first preset gray level is acquired, and further the extraction of the actual optical data corresponding to each sub-pixel in the display panel in the white screen is realized, and the effects of shortening the optical data shooting time required by the optical compensation of the display panel and improving the production efficiency are achieved.

Description

Optical data determining method and device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a method and a device for determining optical data.
Background
With the development of display technology, the requirements on the picture display quality are also increasing.
Because of the deviation of the process or other reasons, the existing display panel has a phenomenon of uneven display brightness, so that optical compensation is required to be performed on the display panel to ensure good picture display quality. When the display panel is optically compensated, optical data of each color sub-pixel in the display panel needs to be acquired.
However, in the prior art, the time for acquiring the optical data required for optical compensation of the display panel is long, and the time for occupying the site in the production process is long, which affects the production efficiency of the production line.
Disclosure of Invention
The invention provides an optical data determining method and device, which are used for shortening the acquisition time of optical data required by optical compensation of a display panel and improving the production efficiency of a production line.
In a first aspect, an embodiment of the present invention provides a method for determining optical data, including:
acquiring initial optical data corresponding to the positions of all sub-pixels of the display panel under a first preset gray-scale white picture;
determining actual optical data corresponding to the target sub-pixel under a first preset gray level according to initial optical data corresponding to each sub-pixel and a preset rule in an extraction pixel group corresponding to the target sub-pixel in the display panel;
The extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and peripheral sub-pixels thereof; the target sub-pixel is any sub-pixel in the display panel.
Optionally, determining, according to the initial optical data and the preset rule corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the actual optical data corresponding to the target sub-pixel under the first preset gray level includes:
determining actual optical data corresponding to the target sub-pixel under a first preset gray level according to initial optical data corresponding to each sub-pixel in an extraction pixel group corresponding to the target sub-pixel in the display panel, an extraction coefficient matrix corresponding to the target sub-pixel and a preset rule;
the extraction coefficient matrix comprises brightness weight coefficients corresponding to all sub-pixels in the extraction pixel group; the preset rule comprises a calculation rule for determining actual optical data corresponding to the target sub-pixel according to initial optical data corresponding to each sub-pixel in an extraction pixel group corresponding to the target sub-pixel in the display panel and an extraction coefficient matrix corresponding to the target sub-pixel;
optionally, the extraction coefficient matrix includes an NxN matrix, the extraction pixel group includes NxN sub-pixels continuously arranged in a row direction and continuously arranged in a column direction, the target sub-pixel is a p-th sub-pixel in the row direction and a q-th sub-pixel in the column direction in the extraction pixel group, where 1< p < n,1< q < n, n is a positive integer greater than or equal to 3;
Optionally, N is an odd number greater than or equal to 3, p=q= (n+1)/2.
Optionally, the extraction pixel groups corresponding to the sub-pixels of each color include at least one type, the extraction coefficient matrixes corresponding to the same type of extraction pixel groups are the same, and the extraction coefficient matrixes corresponding to different types of extraction pixel groups are different;
the pixel arrangement modes in the extraction pixel groups corresponding to the sub-pixels with different colors are different; extracting pixel arrangement modes of the pixel groups and the pixel arrangement modes in the display panel; the type of the extracted pixel group corresponding to each color sub-pixel is related to the pixel arrangement mode in the display panel.
Optionally, before acquiring the initial optical data corresponding to the position of each sub-pixel in the white frame of the display panel under the first preset gray level, the method further includes:
respectively acquiring the position information of each color sub-pixel in the display panel, and marking the sub-pixels in rows and columns;
before determining the actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel and the preset rule, the method further comprises:
Determining an extraction pixel group and an extraction coefficient matrix corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel;
and determining initial optical data corresponding to each sub-pixel in the extraction pixel group according to the position information of each sub-pixel in the extraction pixel group.
Optionally, determining the extraction pixel group and the extraction coefficient matrix corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the sub-pixels in each color in the display panel includes:
determining a pixel arrangement mode of an extraction pixel group corresponding to the target sub-pixel and a corresponding extraction coefficient matrix according to the row and column positions corresponding to the position information of the target sub-pixel;
and determining the extraction pixel group corresponding to the target sub-pixel according to the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, the position information of the target sub-pixel and the position information of the sub-pixels with different colors.
Optionally, the display area of the display panel is divided into a plurality of sub-display areas, and extraction coefficient matrixes corresponding to target sub-pixels with the same color in each sub-display area are not completely the same;
determining a pixel arrangement mode of an extraction pixel group corresponding to the target sub-pixel and a corresponding extraction coefficient matrix according to a row-column position corresponding to the position information of the target sub-pixel, wherein the method comprises the following steps:
Determining the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel and the corresponding relation between the pre-stored position information of the sub-pixel and the pixel arrangement mode of the extraction pixel group;
determining a sub-display area to which the target sub-pixel belongs according to the row and column positions corresponding to the position information of the target sub-pixel;
determining an extraction coefficient matrix corresponding to the target sub-pixel according to the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel and the sub-display area to which the target sub-pixel belongs;
and determining the extraction pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel, the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel and the position information of the sub-pixel in the sub-display area to which the target sub-pixel belongs.
Optionally, the display area is divided into a plurality of edge sub-display areas and a center sub-display area, and the plurality of edge sub-display areas surround the center sub-display area.
Optionally, the preset rule includes:
multiplying an initial optical data matrix corresponding to the extraction pixel group corresponding to the target sub-pixel by an extraction coefficient matrix corresponding to the target sub-pixel, and taking the obtained product as a transfer matrix; the initial optical data matrix corresponding to the extracted pixel group comprises initial optical data corresponding to each sub-pixel in the extracted pixel group;
Determining actual optical data corresponding to the target sub-pixel under a first preset gray level according to element values in the transfer matrix;
optionally, determining, according to the element values in the transition matrix, actual optical data corresponding to the target sub-pixel under the first preset gray scale includes:
determining actual optical data corresponding to the target sub-pixel according to the magnitude relation between the absolute value of the difference value between the sum of the first set row elements and the sum of the second set row elements and the absolute value of the difference value between the sum of the first set column elements and the sum of the second set column elements in the transfer matrix;
wherein the first set row at least comprises a first row, and the second set row at least comprises an Nth row;
the first setting row at least comprises a first row, and the second setting row at least comprises an Nth row.
Optionally, the method for respectively obtaining the position information of the sub-pixels of each color in the display panel and labeling the sub-pixels in rows and columns includes:
respectively obtaining optical data of each sub-pixel in the display panel under the condition that the display panel displays different primary color lattice pictures with second preset gray scales;
determining position information corresponding to the primary color sub-pixels in the display panel according to the optical data of each sub-pixel in the display panel under the primary color lattice picture;
Marking the sub-pixels in rows and columns according to the position information of each sub-pixel in the display panel;
optionally, determining the position information corresponding to the primary color sub-pixels in the display panel according to the optical data of each sub-pixel in the display panel under the primary color lattice picture includes:
correcting the position information with errors in a pre-stored initial position information table according to the actual positions of the lighted primary color sub-pixels in the display panel under the primary color lattice picture;
optionally, the second preset gray level includes at least one gray level within 8-64 gray levels.
Optionally, acquiring initial optical data corresponding to the position of each sub-pixel of the display panel under the white frame of the first preset gray level includes:
and acquiring initial optical data corresponding to the positions of all the sub-pixels of the display panel under the white picture of the first preset gray level through the monochromic optical equipment.
In a second aspect, an embodiment of the present invention further provides an optical data determining apparatus, including:
the acquisition module is used for acquiring initial optical data corresponding to the positions of all the sub-pixels of the display panel under a white picture under a first preset gray level;
the determining module is used for determining the actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel and the preset rule in the extracted pixel group corresponding to the target sub-pixel in the display panel;
The extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and peripheral sub-pixels thereof; the target sub-pixel is any sub-pixel in the display panel.
According to the method and the device for determining the optical data, the initial optical data corresponding to the positions of the sub-pixels of the display panel under the first preset gray level of the white picture are obtained, the actual optical data corresponding to the target sub-pixels under the first preset gray level is determined according to the initial optical data corresponding to the sub-pixels and the preset rules in the extracted pixel group corresponding to the target sub-pixels in the display panel, so that after the white picture of the first preset gray level is obtained, the actual optical data corresponding to the sub-pixels in the display panel can be obtained directly according to the initial optical data and the preset rules in the white picture, and further extraction of the actual optical data corresponding to the red sub-pixels, the green sub-pixels and the blue sub-pixels in the white picture is achieved, and the effects of shortening the optical data shooting time required by the optical compensation of the display panel and improving the production efficiency are achieved. In addition, according to the optical data determining method of the embodiment, initial optical data of the positions of the sub-pixels are shot by the monochromic optical device under the display picture of the display panel, so that the cost can be reduced.
Drawings
FIG. 1 is a flow chart of a method for determining optical data according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for determining optical data provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pixel arrangement in a display panel;
fig. 4 is a schematic diagram of pixel arrangement of an extracted pixel group corresponding to green pixels;
FIG. 5 is a schematic diagram of another pixel arrangement of an extraction pixel group corresponding to a green sub-pixel;
fig. 6 is a schematic diagram of pixel arrangement of an extraction pixel group corresponding to a red subpixel;
FIG. 7 is a schematic diagram of pixel arrangements of an extraction pixel group corresponding to a blue subpixel;
FIG. 8 is a flow chart of another method for determining optical data provided by an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 10 is a side view of the display panel of FIG. 9;
FIG. 11 is a flow chart of another method for determining optical data provided by an embodiment of the present invention;
FIG. 12 is a flowchart of a method for obtaining position information of each sub-pixel in a display panel according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a primary color lattice screen;
fig. 14 is a schematic structural diagram of an optical data determining device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
As described in the background art, in the prior art, the time for acquiring the optical data required for optical compensation of the display panel is long, and the time for occupying the site in the production process is long, which affects the production efficiency of the production line. The long-term study of the inventor finds that the reason for the problem is that in the prior art, when optical data required for optical compensation of a display panel is acquired, different primary color pictures (primary color pictures, i.e. pictures when only one luminescent color sub-pixel in the display panel is lighted) of the display panel under multiple gray scales need to be shot by a Mono monochromatic camera, and if the display panel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, three primary color pictures of the same gray scale exist, and accordingly, each gray scale camera needs to shoot three times to acquire the optical data corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel under the gray scale. For example, at 32 gray scales, a red screen, a green screen, and a blue screen at 32 gray scales need to be respectively shot by a monochrome camera, so as to respectively obtain optical data corresponding to each red sub-pixel at 32 gray scales, optical data corresponding to each green sub-pixel at 32 gray scales, and optical data corresponding to each blue sub-pixel at 32 gray scales. Therefore, the time occupied by the camera shooting is longer, namely the time for acquiring the optical data required by optical compensation of the display panel is longer, the time for occupying the site in the production process is longer, and the production efficiency of the production line is affected.
For the above reasons, the embodiments of the present invention provide an optical data determining method, which may be performed by an optical data determining apparatus, which may be integrated into a monochromic optical device, which may be a Mono monochromic camera (the frames shot by the Mono monochromic camera are all black and white frames), and which may be integrated into a processing device, which may be a computer, having a communication connection with the monochromic optical device. Wherein the optical data may be luminance data. Fig. 1 is a flowchart of an optical data determining method according to an embodiment of the present invention, and referring to fig. 1, the optical data determining method includes:
step 110, obtaining initial optical data corresponding to the positions of the sub-pixels of the display panel under the white picture of the first preset gray level.
The initial optical data may be initial luminance data. The initial luminance data may be absolute luminance data or relative luminance data.
The display panel may include a red subpixel (i.e., a subpixel with a red emission color), a green subpixel (i.e., a subpixel with a green emission color), and a blue subpixel (i.e., a subpixel with a blue emission color). When the display panel displays a white picture, the red sub-pixel, the green sub-pixel and the blue sub-pixel in the display panel are all lighted. The driving chip in the display panel can provide the driving data of the red sub-pixel corresponding to the first preset gray level for the red sub-pixel, provide the driving data of the green sub-pixel corresponding to the first preset gray level for the green sub-pixel and provide the driving data of the blue sub-pixel corresponding to the first preset gray level for the blue sub-pixel, so that the display panel displays the white picture of the first preset gray level. When the white picture of the display panel at the first preset gray level is acquired, the white picture can be acquired through the monochromating optical device. That is, the step 110 may include: and acquiring initial optical data corresponding to the positions of all the sub-pixels of the display panel under the white picture of the first preset gray level through the monochromic optical equipment. Wherein the monochromating optic may be a CCD or CMOS monochromating optic. Wherein the pictures shot by the monochromic optical device are black and white pictures. The cost of the monochromic optical device is low, and the use of the monochromic optical device to shoot pictures can reduce the cost of acquiring initial optical data. However, since the brightness of adjacent sub-pixels may affect each other, there may be inaccuracy in the initial optical data, requiring further determination of the actual brightness of the sub-pixels.
Step 120, determining actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel and the preset rule in the extracted pixel group corresponding to the target sub-pixel in the display panel.
The extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and surrounding sub-pixels thereof.
When the display panel displays a white picture, the brightness of the sub-pixel and the brightness of the sub-pixels around the sub-pixel have a certain relation. Specifically, the actual brightness of the sub-pixel is related to the initial optical data corresponding to each sub-pixel in the extracted pixel group where the sub-pixel is located. The extracted pixel group corresponding to the sub-pixel may be determined in advance, the extracted pixel group corresponding to the sub-pixel may be determined according to the position of the sub-pixel, and after the position of the sub-pixel is determined, the sub-pixel and its surrounding sub-pixels may be determined as the extracted pixel group corresponding to the sub-pixel according to the position of the sub-pixel. For any one of the sub-pixels, for example, the sub-pixels in the row a and the column b in the display panel include a plurality of sub-pixels in the rows (a-i) to (a+i) and the columns (b-j) to (b+j), where i and j are integers greater than or equal to 1, and optionally, i=j. a and b are integers greater than or equal to 2.
In this step, according to the initial optical data and the preset rule corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the actual optical data corresponding to the target sub-pixel is determined. The preset rule may be a rule obtained by statistical analysis after a large number of experiments, and the rule is stored as a preset rule after the rule is obtained. According to the method, the actual optical data corresponding to the target sub-pixels are determined according to the initial optical data corresponding to the sub-pixels and the preset rules in the extracted pixel group corresponding to the target sub-pixels in the display panel, and the target sub-pixels are any sub-pixel in the display panel, so that after a white picture with a first preset gray level is acquired, the actual optical data corresponding to each sub-pixel in the display panel can be obtained directly according to the initial optical data and the preset rules in the white picture, and further the actual optical data corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel in the white picture are extracted, and primary color display pictures do not need to be shot respectively in the same first preset gray level.
When the display panel is optically compensated, the corresponding optical compensation data for a plurality of gray scales needs to be determined. Therefore, in this embodiment, a plurality of different first preset gray scales may be set, and when the maximum gray scale is 255 gray scales, the plurality of different first preset gray scales may include 255 gray scales, 224 gray scales, 192 gray scales, 128 gray scales, 64 gray scales, 48 gray scales, 32 gray scales, 16 gray scales and 8 gray scales, and initial optical data corresponding to the positions of the sub-pixels of the display panel under the white frame of each preset gray scale are respectively obtained; after obtaining initial optical data corresponding to the position of each sub-pixel under a white picture with a first preset gray level (for example, 255 gray levels), determining actual optical data corresponding to each sub-pixel in the display panel under the first preset gray level (for example, 255 gray levels) according to the initial optical data corresponding to each sub-pixel and a preset rule in an extraction pixel group corresponding to the target sub-pixel in the display panel, and obtaining actual optical data corresponding to each sub-pixel in the display panel under a plurality of different first preset gray levels according to the same mode. For each first preset gray level, inputting the actual optical data corresponding to each sub-pixel in the display panel into a preset Demura algorithm, obtaining the corresponding compensation data under the first preset gray level, generating a corresponding compensation file, burning the corresponding compensation file into a driving chip, and providing a corresponding driving signal for the display panel according to the compensation data in the compensation file when the later display panel displays the compensation file so as to improve the display effect of the display panel. It can be understood that when selecting different first preset gray levels, one of the high gray level, the medium gray level and the low gray level can be selected respectively, so that the efficiency is improved.
According to the optical data determining method, initial optical data corresponding to the positions of all the sub-pixels of the display panel under the white picture of the first preset gray level are obtained, and according to the initial optical data corresponding to all the sub-pixels and the preset rules in the extracted pixel group corresponding to the target sub-pixels in the display panel, actual optical data corresponding to the target sub-pixels under the first preset gray level are determined, so that after the white picture of the first preset gray level is obtained, actual optical data corresponding to all the sub-pixels in the display panel can be obtained directly according to the initial optical data and the preset rules under the white picture, and further extraction of the actual optical data corresponding to the red sub-pixels, the green sub-pixels and the blue sub-pixels under the white picture is achieved, and the effects of shortening the optical data shooting time required by optical compensation of the display panel and improving the production efficiency are achieved. In addition, according to the optical data determining method of the embodiment, initial optical data of the positions of the sub-pixels are shot by the monochromic optical device under the display picture of the display panel, so that the cost can be reduced.
Fig. 2 is a flowchart of another optical data determining method according to an embodiment of the present invention, and referring to fig. 2, optionally, the optical data determining method includes:
Step 210, acquiring initial optical data corresponding to the positions of all sub-pixels of the display panel under a first preset gray-scale white picture; this step is the same as the step 110 in the above embodiment, and will not be described here again.
Step 220, determining actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel and the preset rule.
The extraction coefficient matrix comprises brightness weight coefficients corresponding to all sub-pixels in the extraction pixel group. The number of elements in the extraction coefficient matrix is equal to the number of sub-pixels in the extraction pixel group, the elements in the extraction coefficient matrix are brightness weight coefficients corresponding to the sub-pixels in the extraction pixel group, and the brightness weight coefficients can be more than 0 and less than 1. The extraction coefficient matrix corresponding to the target sub-pixel corresponds to the extraction pixel group corresponding to the target sub-pixel. In this step, by determining the actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel in the extraction pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel, and the preset rule, the preset rule includes determining the calculation rule of the actual optical data corresponding to the target sub-pixel according to the initial optical data corresponding to each sub-pixel in the extraction pixel group corresponding to the target sub-pixel in the display panel, and the extraction coefficient matrix corresponding to the target sub-pixel, the actual optical data corresponding to each sub-pixel in the display panel can be obtained according to the initial optical data and the preset rule under the white screen, thereby implementing extraction of the actual optical data corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel under the white screen.
Optionally, the extraction coefficient matrix includes an NxN matrix, the extraction pixel group includes NxN sub-pixels continuously arranged in a row direction and continuously arranged in a column direction, the target sub-pixel is a p-th sub-pixel in the row direction and a q-th sub-pixel in the column direction in the extraction pixel group, where 1< p < n,1< q < n, n is a positive integer greater than or equal to 3. Therefore, at least one sub-pixel around the target sub-pixel in a plurality of directions is included in the extraction pixel group, so that when actual optical data of the target sub-pixel is calculated according to initial optical data of each sub-pixel in the extraction pixel group, the influence factors of the sub-pixels in the plurality of directions around the target sub-pixel on the brightness of the target sub-pixel are considered, and the accuracy of the obtained actual brightness of the target sub-pixel is ensured.
Based on the above technical solution, optionally, N is an odd number greater than or equal to 3, and p=q= (n+1)/2. Therefore, the target sub-pixel is the only sub-pixel at the central position of the extraction pixel group, and other sub-pixels in the extraction pixel group are distributed symmetrically and uniformly around the target sub-pixel, so that the problem of accuracy reduction caused by uneven distribution of the peripheral sub-pixels of the target sub-pixel in the extraction pixel group is avoided when the actual optical data of the target sub-pixel is obtained according to the extraction pixel group corresponding to the target sub-pixel and the extraction coefficient matrix, and the accuracy of the calculated actual optical data of the target sub-pixel is ensured.
Optionally, the extraction pixel groups corresponding to the sub-pixels of each color include at least one type, the extraction coefficient matrices corresponding to the same type of extraction pixel groups are the same, and the extraction coefficient matrices corresponding to different types of extraction pixel groups are different.
The pixel arrangement modes in the extraction pixel groups corresponding to the sub-pixels with different colors are different; extracting pixel arrangement modes of the pixel groups and the pixel arrangement modes in the display panel; the type of the extracted pixel group corresponding to each color sub-pixel is related to the pixel arrangement mode in the display panel.
The same kind of extraction pixel groups comprise the same number of sub-pixels, and the pixel arrangement modes are the same. For example, for the red, green and blue sub-pixels in the display panel, the pixel arrangement manners of the extraction pixel groups corresponding to the red, green and blue sub-pixels are different, so that the extraction pixel groups corresponding to the red, green and blue sub-pixels belong to different kinds of extraction pixel groups. The different pixel arrangement modes of the extraction pixel groups can reflect that the positions of the red sub-pixels, the green sub-pixels and the blue sub-pixels in the extraction pixel groups are different. FIG. 3 is a schematic diagram showing a pixel arrangement in a display panel, wherein red sub-pixels 10 and blue sub-pixels 30 are located in the same column, and red sub-pixels 10 and blue sub-pixels 30 are alternately arranged in the same column, and green sub-pixels 20 are arranged in a single column; the red and blue sub-pixel columns and the green sub-pixel columns are alternately arranged. In the pixel arrangement schematic diagram of the display panel shown in fig. 3, the centers of the green sub-pixels 20, the blue sub-pixels 30, and the red sub-pixels 10 are schematically shown to be in the same line, and when the pixels in the actual display panel are arranged, any two of the centers of the green sub-pixels 20, the red sub-pixels 10, and the blue sub-pixels 30 may not be in the same line, which is not particularly limited herein.
For the display panel shown in fig. 3, the extraction pixel groups corresponding to the green sub-pixels 20 include two types, the extraction pixel groups corresponding to the red sub-pixels 10 include one type, and the extraction pixel groups corresponding to the blue sub-pixels 30 include one type. Fig. 4 is a schematic diagram of pixel arrangement of one extraction pixel group corresponding to a green pixel, and fig. 5 is a schematic diagram of pixel arrangement of another extraction pixel group corresponding to a green sub-pixel. Referring to fig. 3 and 4, the extraction pixel group shown in fig. 4 may correspond to green sub-pixels (denoted as first green sub-pixels 21) located in even columns and odd rows in the display panel and green sub-pixels (denoted as second green sub-pixels 22) located in even columns and even rows; referring to fig. 3 and 5, the extraction pixel group shown in fig. 5 may correspond to green sub-pixels (denoted as third green sub-pixels 23) located in odd-numbered rows and odd-numbered columns of the display panel, and green sub-pixels (denoted as fourth green sub-pixels 24) located in even-numbered rows and even-numbered columns. The row where a certain green sub-pixel is located is the row where the green sub-pixel is located in all green sub-pixels, and the column where a certain green sub-pixel is located is the column where the green sub-pixel is located in all green sub-pixels. Fig. 4 and fig. 5 each show that the extraction pixel group includes 3×3 sub-pixels, and referring to fig. 4 and fig. 5, for two extraction pixel groups corresponding to the green sub-pixels 20, the second column of the two extraction pixel groups is 3 green sub-pixels 20, where the second green sub-pixel 20 in the second column is the target sub-pixel PX0. For the extraction pixel group shown in fig. 4, three sub-pixels in the first column are sequentially a blue sub-pixel 30, a red sub-pixel 10, and a blue sub-pixel 30, and three sub-pixels in the third column are sequentially a red sub-pixel 10, a blue sub-pixel 30, and a red sub-pixel 10. For the extraction pixel group shown in fig. 5, three sub-pixels in the first column are sequentially a red sub-pixel 10, a blue sub-pixel 30, and a red sub-pixel 10, and three sub-pixels in the third column are sequentially a blue sub-pixel 30, a red sub-pixel 10, and a blue sub-pixel 30.
Fig. 6 is a schematic pixel arrangement diagram of an extraction pixel group corresponding to a red sub-pixel, fig. 6 is still shown by taking an extraction pixel group including 3×3 sub-pixels as an example, referring to fig. 6, in the extraction pixel group corresponding to a red sub-pixel 10, three sub-pixels in a second column are respectively a blue sub-pixel 30, a red sub-pixel 10 and a blue sub-pixel 30, three sub-pixels in a first column and three sub-pixels in a third column are all green sub-pixels 20, and a red sub-pixel 10 in the extraction pixel group is a target sub-pixel PX0.
Fig. 7 is a schematic diagram of pixel arrangement of an extraction pixel group corresponding to a blue sub-pixel, fig. 6 is still shown by taking an example that the extraction pixel group includes 3×3 sub-pixels, referring to fig. 6, in the extraction pixel group corresponding to a blue sub-pixel 30, three sub-pixels in a second column are respectively a red sub-pixel 10, a blue sub-pixel 30 and a red sub-pixel 10, three sub-pixels in a first column and three sub-pixels in a third column are all green sub-pixels 20, and the blue sub-pixel 30 in the extraction pixel group is a target sub-pixel PX0.
It should be noted that, as described above, the types of the extraction pixel groups corresponding to the green sub-pixels 20 include two types, the types of the extraction pixel groups corresponding to the red sub-pixels 10 include one type, the types of the extraction pixel groups corresponding to the blue sub-pixels 30 include one type, the types of the extraction pixel groups corresponding to the respective color sub-pixels and the pixel arrangement manners in the extraction pixel groups are determined by the pixel arrangement manners in the display panel, and the types of the extraction pixel groups corresponding to the respective color sub-pixels may be changed for the display panel different from the pixel arrangement manners shown in fig. 3. Therefore, for the sub-pixels with the same color in the display panel, the extraction coefficient matrixes corresponding to the sub-pixels corresponding to the same extraction pixel group are the same, the calculation modes for calculating the actual optical data are the same, and only the initial optical data of each sub-pixel of the extraction pixel group may be different, so that the actual optical data of each sub-pixel in the whole display panel can be quickly calculated, and the determination speed of the actual brightness data corresponding to the sub-pixel is further improved.
Fig. 8 is a flowchart of another optical data determining method according to an embodiment of the present invention, and referring to fig. 8, the optical data determining method of the display panel includes:
step 310, respectively obtaining the position information of the sub-pixels of each color in the display panel, and marking the sub-pixels in rows and columns.
Wherein the display panel includes red, green and blue sub-pixels. When the position information of each color sub-pixel in the display panel is acquired, the position information of each color sub-pixel in the display panel can be acquired under a single-color picture, and for example, at least part of red sub-pixels in the display panel can be lightened, and then the position information of the lightened red sub-pixels is acquired through photographing by a camera, and when only part of red sub-pixels are lightened, the position information of other unlit red sub-pixels can be calculated according to a set position information calculation method. And then extinguishing the red sub-pixels, only lighting at least part of the green sub-pixels in the display panel, and acquiring the position information of each green sub-pixel in the display panel by the same method. And then the green sub-pixels are extinguished, only at least part of the blue sub-pixels in the display panel are lightened, and the position information of each blue sub-pixel in the display panel is acquired by the same method. After the position information of the sub-pixels is obtained, the rows and columns where the sub-pixels are located can be marked based on the positions of the sub-pixels.
Step 320, obtaining initial optical data corresponding to the positions of the sub-pixels of the display panel under the white picture of the first preset gray level; this step is the same as the step 110 in the above embodiment, and will not be described here again.
Step 330, determining an extraction pixel group and an extraction coefficient matrix corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel.
The pixel arrangement mode of the extraction pixel group corresponding to each color sub-pixel can be predetermined according to the pixel arrangement mode in the display panel, and the corresponding relation between the row and column where the sub-pixel is located and the arrangement mode of the extraction pixel group is obtained and stored in advance.
According to the corresponding relation between the row and column where the prestored sub-pixels are located and the pixel arrangement mode of the extracted pixel group and the row and column position corresponding to the position information of the target sub-pixels (namely, the row and column where the target sub-pixels are located), the pixel arrangement mode of the extracted pixel group corresponding to each color sub-pixel can be determined. The extraction coefficient matrix corresponds to the pixel arrangement mode of the extraction pixel group, so that after the extraction pixel group is determined, the extraction coefficient matrix can also be determined.
In an alternative embodiment, the correspondence between the pixel arrangement manner of the extraction pixel group and the extraction coefficient matrix may be stored in advance, and then, according to the pixel arrangement manner corresponding to the extraction pixel group, the extraction coefficient matrix corresponding to the extraction pixel group, that is, the extraction coefficient matrix corresponding to the target subpixel may be determined. In another embodiment, the correspondence between the rows and columns of the sub-pixels and the extraction coefficient matrix may be stored in advance, and then the extraction coefficient matrix corresponding to the target sub-pixel may be determined according to the row and column positions corresponding to the position information of the target sub-pixel.
That is, the step 330 includes: and determining a pixel arrangement mode of an extraction pixel group corresponding to the target sub-pixel and a corresponding extraction coefficient matrix according to the row and column positions corresponding to the position information of the target sub-pixel.
The step 330 further includes: and determining the extraction pixel group corresponding to the target sub-pixel according to the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, the position information of the target sub-pixel and the position information of the sub-pixels with different colors.
Specifically, according to the position information of the target sub-pixel, the pixel arrangement mode corresponding to the extracted pixel group and the position information of the sub-pixels in each color, the extracted pixel group, specifically, the position of each sub-pixel in the extracted pixel group, can be determined.
Optionally, before determining the extraction pixel group corresponding to the target sub-pixel and the corresponding extraction coefficient matrix according to the position information of the target sub-pixel and the pixel arrangement mode of the extraction pixel group, optical data acquisition can be performed on the sample display panel under the white picture of the first preset gray level, so as to obtain the extraction coefficient matrix corresponding to each color sub-pixel under the first preset gray level.
Wherein the sample display panel may be one or more of a collection of display panels of the same structure. The sample display panel is subjected to optical data acquisition under a white picture with a first preset gray level, and a large number of statistical analyses are performed to obtain an extraction coefficient matrix corresponding to each color sub-pixel under the first preset gray level.
Step 340, determining initial optical data corresponding to each sub-pixel in the extraction pixel group according to the position information of each sub-pixel in the extraction pixel group.
After the position information of each sub-pixel in the extraction pixel group is determined, according to the obtained initial optical data corresponding to the position of each sub-pixel and the position information of each sub-pixel in the extraction pixel group under the white picture of the first preset gray level, the initial optical data corresponding to the position of each sub-pixel in the extraction pixel group, that is, the initial optical data corresponding to each sub-pixel in the extraction pixel group, can be determined.
Step 350, determining actual optical data corresponding to the target sub-pixel according to the initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel and a preset rule; this step is the same as the step 220 in the above embodiment, and will not be described in detail here.
Optionally, the preset rule includes:
multiplying an initial optical data matrix corresponding to the extraction pixel group corresponding to the target sub-pixel by an extraction coefficient matrix corresponding to the target sub-pixel, and taking the obtained product as a transfer matrix; the initial optical data matrix corresponding to the extracted pixel group comprises initial optical data corresponding to each sub-pixel in the extracted pixel group; and then determining the actual optical data corresponding to the target sub-pixel according to the element values in the transfer matrix.
Taking the extracted pixel group corresponding to the green sub-pixel shown in fig. 4 as an example, if the target sub-pixel is a green sub-pixel, the target sub-pixel is denoted as G nm I.e. the green sub-pixels in the nth row and mth column of the display panel, where m and n are integers greater than or equal to 2, the sub-pixels in the extracted pixel group are B (n-1)(m-1) 、G (n-1)m 、R (n-1)(m+1) 、R n(m-1) 、G nm 、B n(m+1) 、B (n+1)(m-1) 、G (n+1)m 、R (n+1)(m+1) Wherein B is (n-1)(m-1) Representing blue sub-pixels positioned in the (n-1) -th row and (m-1) -th column of the display panel, G (n-1)m Representing green sub-pixels positioned in the (n-1) th row and (m) th column of the display panel, R (n-1)(m+1) Representing red sub-pixel in the (n-1) th row and (m+1) th column of the display panel, R n(m-1) Representing the red subpixel in the nth row and column m-1 of the display panel, B n(m+1) Representing blue sub-pixels positioned in the (m+1) th row and B of the display panel (n+1)(m-1) Representing blue sub-pixels positioned in the (n+1) -th row and (m-1) -th column of the display panel, G (n+1)m Representing green sub-pixels positioned in the (n+1) th row and (m) th column of the display panel, R (n+1)(m+1) Representing the red sub-pixel of the n+1 row and m+1 column in the display panel. The initial optical data matrix corresponding to the extracted pixel group corresponding to the target sub-pixel is as followsWherein LB is (n-1)(m-1) Representing blue subpixel B (n-1)(m-1) Corresponding initial optical data, LG (n-1)m Representing a green subpixel G (n-1)m Corresponding initial optical data, LR (n-1)(m+1) Representing a red subpixel R (n-1)(m+1) Corresponding initial optical data, LR n(m-1) Representing a red subpixel R n(m-1) Corresponding initial optical data, LG nm Representing a green subpixel G nm Corresponding initial optical data (i.e. target sub-pixel), LB n(m+1) Representing blue subpixel B n(m+1) Corresponding initial optical data, LB (n+1)(m-1) Representing blue subpixel B (n+1)(m-1) Corresponding initial optical data, LG (n+1)m Representing a green subpixel G (n+1)m Corresponding initial optical data, LR (n+1)(m+1) Representing a red subpixel R (n+1)(m+1) Corresponding initial optical data. The extraction coefficient matrix corresponding to the target sub-pixel is marked asWherein g 11 Representing blue subpixel B (n-1)(m-1) Corresponding luminance weight coefficient g 12 Representing a green subpixel G (n-1)m Corresponding luminance weight coefficient g 13 Representing a red subpixel R (n-1)(m+1) Corresponding luminance weight coefficient g 21 Representing a red subpixel R n(m-1) Corresponding luminance weight coefficient g 22 Representing a green subpixel G nm (i.e., target subpixel) corresponding luminance weight coefficient, g 23 Representing blue subpixel B n(m+1) Corresponding luminance weight coefficient g 31 Representing blue subpixel B (n+1)(m-1) Corresponding luminance weight coefficient g 32 Representing a green subpixel G (n+1)m Corresponding luminance weight coefficient g 33 Representing a red subpixel R (n+1)(m+1) And a corresponding brightness weight coefficient.
The target subpixel is marked as G nm The corresponding calculation mode of the transfer matrix is as follows:
Wherein Gt 11 ＝g 11 *LB (n-1)(m-1) +g 12 *LR n(m-1) +g 13 *LB (n+1)(m-1) ，Gt 12 ＝g 11 *LG (n-1)m +g 12 *LG nm +g 13 *LB (n+1)m With this, the other elements of the transfer matrix will not be described in detail.
In the above description, the description of the calculation of the relay matrix is performed by taking the target sub-pixel as the green sub-pixel as an example, and the determination process of the corresponding relay matrix when the target sub-pixel is the red sub-pixel is similar to the determination process of the corresponding relay matrix when the target sub-pixel is the green sub-pixel. When the target subpixel is a red subpixel, the red subpixel as the target subpixel is denoted as R as shown in FIG. 6 nm I.e. the red subpixel located in the nth row and mth column of the display panel, where m and n are integers greater than or equal to 2. In which the extracted pixel group includes NxN sub-imagesThe pixel, the extraction coefficient matrix includes an NxN matrix, taking n=3 as an example, and the target subpixel R nm The corresponding transfer matrix is:
wherein,representing a target subpixel R nm A corresponding matrix of extraction coefficients is provided,representing a target subpixel R nm An initial optical data matrix of the corresponding extracted pixel group,/->Representing a target subpixel R nm And the corresponding transfer matrix.
Wherein in the initial optical data matrix, LG (n-1)(m-1) Representing a green subpixel G (n-1)(m-1) (Green sub-pixels located in n-1 row, m-1 column in display Panel), LB (n-1)m Representing blue subpixel B (n-1)m (blue sub-pixel in n-1 row and m column of display panel) corresponding initial optical data LG (n-1)(m+1) Representing a green subpixel G (n-1)(m+1) (Green sub-pixels located in n-1 row, m+1 column in display Panel), LG n(m-1) Representing a green subpixel G n(m-1) (Green sub-pixels in nth row, m-1 column of display Panel), LR nm Representing a red subpixel R nm (initial optical data, LG, corresponding to the red subpixel in the nth row, mth column, i.e., target subpixel in the display panel) n(m+1) Representing a green subpixel G n(m+1) (green sub-pixel in nth row, m+1th column of display panel) corresponding initial optical data, LG (n+1)(m-1) Representing a green subpixel G (n+1)(m-1) (display surface)Green sub-pixels located in the n+1th row, m-1 th column) of the panel, LB (n+1)m Representing blue subpixel B (n+1)m (blue sub-pixel in n+1th row and mth column of display panel) corresponding initial optical data, LG (n+1)(m+1) Representing a green subpixel G (n+1)(m+1) (green sub-pixels located in the n+1th row, m+1th column of the display panel). In the extraction coefficient moment corresponding to the target sub-pixel, r is as follows 11 Representing a green subpixel G (n-1)(m-1) Corresponding luminance weight coefficient, r 12 Representing blue subpixel B (n -1 )m Corresponding luminance weight coefficient, r 13 Representing a green subpixel G (n-1)(m+1) Corresponding luminance weight coefficient, r 21 Representing green subpixel LG n(m-1) Corresponding luminance weight coefficient, r 22 Representing a red subpixel R nm The corresponding luminance weight coefficient (i.e., target subpixel), r 23 Representing a green subpixel G n(m+1) Corresponding luminance weight coefficient, r 31 Representing a green subpixel G (n+1)(m-1) Corresponding luminance weight coefficient, r 32 Representing blue subpixel B (n+1)m Corresponding luminance weight coefficient, r 33 Representing a green subpixel G (n+1)(m+1) And a corresponding brightness weight coefficient.
The determination of the corresponding transition matrix when the target subpixel is a blue subpixel is similar to the determination of the corresponding transition matrix when the target subpixel is a green subpixel or a red subpixel. Referring to fig. 7, when the target subpixel is a blue subpixel, the blue subpixel as the target subpixel is denoted as B nm I.e., the blue sub-pixel located in the nth row and mth column of the display panel, where m and n are integers greater than or equal to 2. In the case where the extraction pixel group includes NxN sub-pixels, the extraction coefficient matrix includes NxN matrix, and n=3 is taken as an example, and the target sub-pixel B nm The corresponding transfer matrix is:
Wherein,representing target subpixel B nm A corresponding matrix of extraction coefficients is provided,representing target subpixel B nm An initial optical data matrix of the corresponding extracted pixel group,/->Representing target subpixel B nm And the corresponding transfer matrix.
Wherein in the initial optical data matrix, LG (n-1)(m-1) Representing a green subpixel G (n-1)(m-1) (green sub-pixels located in n-1 row, m-1 column in display panel), LR (n-1)m Representing a red subpixel R (n-1)m (red sub-pixel in n-1 row and m column of display panel) initial optical data, LG (n-1)(m+1) Representing a green subpixel G (n-1)(m+1) (Green sub-pixels located in n-1 row, m+1 column in display Panel), LG n(m-1) Representing a green subpixel G n(m-1) (Green sub-pixels in nth row, m-1 column of display Panel), LB nm Representing blue subpixel B nm (blue sub-pixel in nth row and mth column in display panel, namely target sub-pixel) corresponding to initial optical data LG n(m+1) Representing a green subpixel G n(m+1) (green sub-pixel in nth row, m+1th column of display panel) corresponding initial optical data, LG (n+1)(m-1) Representing a green subpixel G (n+1)(m-1) (Green sub-pixels located in n+1th row, m-1 th column in display Panel), LR (n+1)m Representing a red subpixel R (n+1)m (red sub-pixel in n+1th row, mth column in display panel), LG (n+1)(m+1) Representing a green subpixel G (n+1)(m+1) (in the display panel at row n +1,green sub-pixel of column m+1) corresponds to the initial optical data. In the extraction coefficient moment corresponding to the target sub-pixel, b is as follows 11 Representing a green subpixel G (n-1)(m-1) Corresponding luminance weight coefficient, b 12 Representing a red subpixel R (n-1)m Corresponding luminance weight coefficient, b 13 Representing a green subpixel G (n-1)(m+1) Corresponding luminance weight coefficient, b 21 Representing green subpixel LG n(m-1) Corresponding luminance weight coefficient, b 22 Representing blue subpixel B nm (i.e. the target subpixel) corresponding luminance weight coefficient, b 23 Representing a green subpixel G n(m+1) Corresponding luminance weight coefficient, b 31 Representing a green subpixel G (n+1)(m-1) Corresponding luminance weight coefficient, b 32 Representing a red subpixel R (n+1)m Corresponding luminance weight coefficient, b 33 Representing a green subpixel G (n+1)(m+1) And a corresponding brightness weight coefficient.
And after the transfer matrix is obtained, determining the actual optical data corresponding to the target sub-pixel according to the element values in the transfer matrix. Specifically, a determination rule for determining actual optical data corresponding to the target sub-pixel according to the element value in the relay matrix may be preset, and after the relay matrix is determined, the actual optical data of the target sub-pixel may be determined according to a preset determination rule for determining actual optical data corresponding to the target sub-pixel according to the element value in the relay matrix.
Optionally, determining the actual optical data corresponding to the target sub-pixel according to the element values in the relay matrix includes: determining actual optical data corresponding to the target sub-pixel according to the absolute value of the difference value between the sum of the first set row elements and the sum of the second set row elements and the absolute value of the difference value between the sum of the first set column elements and the sum of the second set column elements in the transfer matrix; wherein the first set row at least comprises a first row, and the second set row at least comprises an Nth row; the first setting row at least comprises a first row, and the second setting row at least comprises an Nth row.
In some alternative embodiments of the invention, the first set of rows comprises a first row, the second set of rows comprises an nth row, the first set of columns comprises a first column, and the second set of columns comprises an nth column. In another alternative embodiment of the present invention, the first set row includes a first row through an N-1 th row, and the second set row includes an n+1th row through an N-th row; the first setting column includes first to m-1 th columns, and the second setting column includes m+1-1 th to N-th columns.
Optionally, determining the actual optical data corresponding to the target sub-pixel as the average value of each element in the first set row and each element in the second set row when the absolute value of the difference between the sum of the first set row elements and the sum of the second set row elements is smaller than the absolute value of the difference between the sum of the first set column elements and the sum of the second set column elements; when the absolute value of the difference value between the sum of the first set row elements and the sum of the second set row elements is larger than the absolute value of the difference value between the sum of the first set column elements and the sum of the second set column elements, determining the actual optical data corresponding to the target sub-pixel as the average value of each element in the first set column and each element in the second set column; and determining the average value of the sum of the elements in the first set row, the second set column and the second set column in the transfer matrix from the actual optical data corresponding to the target sub-pixel when the absolute value of the difference between the sum of the elements in the first set row and the sum of the elements in the second set row is equal to the absolute value of the difference between the sum of the elements in the first set column and the sum of the elements in the second set column. N=3, the target subpixel is a green subpixel G nm Target subpixel G nm Corresponding actual optical data L s G nm The calculation formula of (2) is as follows:
n=3, the target subpixel is a red subpixel R nm Target subpixel R nm Corresponding actual optical data L s R nm The calculation formula of (2) is as follows:
n=3, the target subpixel is blue subpixel B nm Target subpixel B nm Corresponding actual optical data L s B nm The calculation formula of (2) is as follows:
based on the above technical solution, fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 9, optionally, a display area AA of the display panel is divided into a plurality of sub-display areas, and extraction coefficient matrices corresponding to target sub-pixels with the same color in different sub-display areas are not completely the same.
Specifically, in different sub-display areas of the display panel, the brightness influence degree of adjacent sub-pixels may be different from each other, so that the extraction coefficient matrices corresponding to the target sub-pixels with the same color in the different sub-display areas may be different. For example, a curved screen with a curved edge may have a subpixel in the edge region of the display area, where the peripheral subpixels of the subpixel may not be in the same plane as the subpixel, and where the subpixels in the center region are in the same plane, so that the adjacent subpixels have different brightness effects with respect to each other in the center region and the edge region. Fig. 10 is a side view of the display panel shown in fig. 9, and referring to fig. 9 and 10, the display area is divided into a plurality of edge sub-display areas surrounding a center sub-display area AA 0. The plurality of edge sub-display regions may include a first edge sub-display region AA1 and a second edge sub-display region AA2 disposed opposite to each other, and a third edge sub-display region AA3 and a fourth edge sub-display region AA4 disposed opposite to each other, wherein the corresponding first edge sub-display region AA1 and second edge sub-display region AA2 may be a bending display region.
Fig. 11 is a flowchart of another optical data determining method provided in an embodiment of the present invention, and referring to fig. 11, the optical data determining method of the display panel includes:
step 410, respectively obtaining the position information of each color sub-pixel in the display panel, and marking the sub-pixels in rows and columns; this step is the same as the process 310 in the above embodiment, and will not be described again.
Step 420, obtaining initial optical data corresponding to the positions of all sub-pixels of the display panel under a first preset gray-scale white picture; this step is the same as the step 110 in the above embodiment, and will not be described here again.
Step 430, determining the pixel arrangement mode of the extracted pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel and the corresponding relation between the pre-stored position information of the sub-pixel and the pixel arrangement mode of the extracted pixel group.
As described above, for the pixel arrangement of the extraction pixel group corresponding to each color sub-pixel, it may be predetermined according to the pixel arrangement in the display panel, and the correspondence between the positional information of the sub-pixel and the arrangement of the extraction pixel group is obtained and stored in advance. After the target sub-pixel is determined, the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel can be obtained according to the position information of the target sub-pixel and the corresponding relation between the pre-stored position information of the sub-pixel and the pixel arrangement mode of the extraction pixel group.
Step 440, determining the sub-display area to which the target sub-pixel belongs according to the row and column positions corresponding to the position information of the target sub-pixel.
Specifically, the sub-display areas to which the target sub-pixel belongs may be determined according to the position signal of the target sub-pixel, where the sub-pixels included in the different sub-display areas are different.
Step 450, determining an extraction coefficient matrix corresponding to the target sub-pixel according to the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel and the sub-display area to which the target sub-pixel belongs.
Specifically, when the pixel arrangement manners of the extraction pixel groups corresponding to the two target sub-pixels belonging to different sub-display areas are the same, the extraction coefficient matrices corresponding to the two target sub-pixels may also be different. In the step, when the extraction coefficient matrix of the target sub-pixel is determined, on the premise of considering the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, the factors of the sub-display area to which the target sub-pixel belongs are considered, so that the accuracy of the obtained extraction coefficient matrix is ensured, and correspondingly, the accuracy of the actual optical data of the target sub-pixel obtained through calculation can be ensured.
Step 460, determining an extraction pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel, the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, and the position information of the sub-pixel in the sub-display area to which the target sub-pixel belongs.
Specifically, the position of each sub-pixel in the extraction pixel group can be determined according to the position information of the target sub-pixel, the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, and the position information of the sub-pixel in the sub-display area to which the target sub-pixel belongs, that is, each sub-pixel included in the extraction pixel group can be determined.
Step 470, determining initial optical data corresponding to each sub-pixel in the extraction pixel group according to the position information of each sub-pixel in the extraction pixel group; this step is the same as the step 340 in the above embodiment, and will not be described here again.
Step 480, determining actual optical data corresponding to the target sub-pixel under a first preset gray level according to initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, an extraction coefficient matrix corresponding to the target sub-pixel and a preset rule; this step is the same as the step 220 in the above embodiment, and will not be described in detail here.
Fig. 12 is a flowchart of a method for obtaining position information of each sub-pixel in a display panel according to an embodiment of the present invention, where, based on the above embodiment, the steps 310 and 410 respectively obtain the position information of each sub-pixel in the display panel, the process includes:
And 11, respectively obtaining optical data of each sub-pixel in the display panel under the condition that the display panel displays different primary color lattice pictures with second preset gray scales.
Fig. 13 is a schematic diagram of a primary color dot matrix picture. For example, when the display panel includes red sub-pixels, green sub-pixels, and blue sub-pixels, the display panel may be controlled to display a red dot matrix screen of a second preset gray level (only a part of the red sub-pixels in the display panel are lit and the display gray level of the lit red sub-pixels is the second preset gray level), a green dot matrix screen (only a part of the green sub-pixels in the display panel are lit and the display gray level of the lit green sub-pixels is the second preset gray level), and a blue dot matrix screen (only a part of the blue sub-pixels in the display panel are lit and the display gray level of the lit blue sub-pixels is the second preset gray level), respectively. In the primary color bitmap, the interval between two adjacent lighted sub-pixels in the same direction is equal, and in an exemplary embodiment, the interval between two adjacent lighted sub-pixels in the row direction x1 is equal, and the interval between two adjacent lighted sub-pixels in the column direction y1 is equal. Optionally, in the primary color lattice picture corresponding to different colors, the lighted sub-pixels belong to the same pixel, wherein each pixel comprises at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel.
Specifically, before step 11, a coordinate system may be established, where the abscissa of the coordinate system is related to the resolution of the display panel, and the accuracy of the coordinate system is a positive integer multiple of the resolution of the display panel. Optionally, the accuracy of the coordinate system is 3W times the resolution of the display panel, where W is a positive integer, and illustratively, when w=1, if the resolution of the display panel is 1080x2400, the abscissa range of the coordinate system is [0,1080x3], [0,2400x3], respectively.
In the primary color lattice picture, the same color sub-pixels in the display panel are lightened according to the appointed interval, namely, the corresponding driving data are given to the sub-pixels in the display panel according to the appointed interval, so that the primary color lattice picture is displayed on the display panel. The arrangement principle of the dot position interval can be that the abscissa interval value of the dot position interval can be divided by the maximum value of the corresponding abscissa, and the ordinate interval value can be divided by the maximum value of the corresponding ordinate. Illustratively, based on 1080x2400 resolution, the coordinate system has an abscissa and ordinate range of [0,1080x3], [0,2400x3], respectively, with a dot spacing of [360, 800], where 360 is divisible by 1080x3 and 800 is divisible by 2400x 3. The dot spacing [360, 800] indicates that the spacing is 360 for two adjacent sub-pixels (e.g., A1 and A2 in fig. 13) that are lit in the row direction in the display panel, and 800 for two adjacent sub-pixels (e.g., A1 and A3 in fig. 13) that are lit in the column direction in the display panel.
And step 12, determining the position information corresponding to the primary color sub-pixels in the display panel according to the optical data of each sub-pixel in the display panel under the primary color lattice picture.
According to the optical data of each sub-pixel in the display panel under the primary color lattice picture, the position information of the lighted sub-pixel can be obtained, and the position information of the sub-pixel can be the abscissa information of the sub-pixel in the coordinate system. After the position information of the lighted sub-pixel is determined, the position information of the non-lighted sub-pixel with the same color can be obtained through calculation.
Optionally, the step 12 includes:
correcting the position information with errors in a pre-stored initial position information table according to the actual positions of the lighted primary color sub-pixels in the display panel under the primary color lattice picture.
The initial position information table can be obtained by determining position information of the sample display panel. Due to the deviation of the manufacturing process, there may be a deviation of the physical positions of the sub-pixels in different display panels. In this embodiment, the position information with an error in the pre-stored initial position information table may be corrected according to the obtained position information corresponding to the actual position of the primary color sub-pixel that is lighted in the display panel under the primary color dot matrix picture, so as to ensure the accuracy of the obtained position information of the sub-pixel.
And 13, marking the rows and columns of the sub-pixels according to the position information of each sub-pixel in the display panel.
Specifically, after the position information of each sub-pixel in the display panel is obtained, determining the row of the sub-pixel according to the abscissa of the sub-pixel, determining the column of the sub-pixel according to the total coordinate of the sub-pixel, and accordingly marking the row and the column. Optionally, the second preset gray level includes at least one gray level within 8-64 gray levels.
Specifically, since the luminance of the sub-pixels is greatly affected by the luminance of the surrounding sub-pixels under the low luminance of the display panel, in this embodiment, the position of each sub-pixel is obtained under the primary color lattice picture under the second preset gray level of the low luminance, and since the sub-pixels around the sub-pixels that are lit under the color lattice picture are not lit, the accuracy of the low gray level coordinate information can be improved. The second preset gray scale can be 8-64 gray scales in the first display mode, and the second preset gray scale can also be 255 gray scales in the second display mode; wherein the maximum brightness in the first display mode is higher than the maximum brightness in the second display mode, and in some alternative embodiments, the brightness in the 255 gray scale in the second display mode is equal to the brightness of a gray scale in the range of 8-64 gray scales in the first display mode.
Note that, the second preset gray level may be other gray levels except 8-64, which is not limited herein.
An embodiment of the present invention further provides an optical data determining device, and fig. 14 is a schematic structural diagram of the optical data determining device provided by the embodiment of the present invention, and referring to fig. 14, the optical data determining device includes:
the obtaining module 510 is configured to obtain initial optical data corresponding to a position where each sub-pixel is located on a white screen of the display panel under a first preset gray level;
the determining module 520 is configured to determine, according to initial optical data and a preset rule corresponding to each sub-pixel in an extracted pixel group corresponding to a target sub-pixel in the display panel, actual optical data corresponding to the target sub-pixel under a first preset gray level;
the extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and peripheral sub-pixels thereof; the target sub-pixel is any sub-pixel in the display panel.
The optical data determining device of this embodiment is configured to perform the optical data determining method of any of the foregoing embodiments of the present invention, and has the beneficial effects of the optical data determining method of any of the foregoing embodiments of the present invention, which are not described herein.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (10)

1. A method of determining optical data, comprising:
acquiring initial optical data corresponding to the positions of all sub-pixels of the display panel under a first preset gray-scale white picture;
determining actual optical data corresponding to a target sub-pixel under the first preset gray scale according to the initial optical data corresponding to each sub-pixel and a preset rule in an extracted pixel group corresponding to the target sub-pixel in the display panel;
wherein the extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and surrounding sub-pixels thereof; the target sub-pixel is any sub-pixel in the display panel.
2. The method according to claim 1, wherein determining the actual optical data corresponding to the target sub-pixel at the first preset gray level according to the initial optical data corresponding to each sub-pixel and a preset rule in the extracted pixel group corresponding to the target sub-pixel in the display panel includes:
determining actual optical data corresponding to the target sub-pixel under the first preset gray scale according to the initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel and the preset rule;
the extraction coefficient matrix comprises brightness weight coefficients corresponding to all the sub-pixels in the extraction pixel group; the preset rule comprises a calculation rule for determining actual optical data corresponding to a target sub-pixel according to the initial optical data corresponding to each sub-pixel in an extraction pixel group corresponding to the target sub-pixel in the display panel and an extraction coefficient matrix corresponding to the target sub-pixel;
preferably, the extraction coefficient matrix includes an NxN matrix, the extraction pixel group includes NxN sub-pixels that are continuously arranged in a row direction and continuously arranged in a column direction, the target sub-pixel is a p-th sub-pixel in the row direction in the extraction pixel group, and a q-th sub-pixel in the column direction, where 1< p < n,1< q < n, n is a positive integer greater than or equal to 3;
Preferably, N is an odd number greater than or equal to 3, p=q= (n+1)/2.
3. The optical data determination method according to claim 2, wherein the extraction pixel group corresponding to each color sub-pixel includes at least one of the extraction coefficient matrices corresponding to the same kind of extraction pixel group, and the extraction coefficient matrices corresponding to different kinds of extraction pixel groups are different;
the pixel arrangement modes in the extracted pixel groups corresponding to the sub-pixels with different colors are different; the pixel arrangement mode of the extracted pixel group is related to the pixel arrangement mode in the display panel; the type of the extracted pixel group corresponding to each color sub-pixel is related to the pixel arrangement mode in the display panel.
4. The method according to claim 2, further comprising, before the acquiring the initial optical data corresponding to the position of each sub-pixel in the white frame of the display panel at the first preset gray level:
respectively acquiring the position information of each color sub-pixel in a display panel, and marking the sub-pixels in rows and columns;
before determining the actual optical data corresponding to the target sub-pixel under the first preset gray scale according to the initial optical data corresponding to each sub-pixel in the extracted pixel group corresponding to the target sub-pixel in the display panel, the extraction coefficient matrix corresponding to the target sub-pixel, and the preset rule, the method further includes:
Determining the extraction pixel group and the extraction coefficient matrix corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel;
and determining initial optical data corresponding to each sub-pixel in the extraction pixel group according to the position information of each sub-pixel in the extraction pixel group.
5. The method according to claim 4, wherein determining the extracted pixel group and the extraction coefficient matrix corresponding to the target sub-pixel according to the row-column position corresponding to the position information of the target sub-pixel comprises:
determining a pixel arrangement mode of the extracted pixel group corresponding to the target sub-pixel and the corresponding extraction coefficient matrix according to the row and column positions corresponding to the position information of the target sub-pixel;
and determining the extraction pixel group corresponding to the target sub-pixel according to the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel, the position information of the target sub-pixel and the position information of each color sub-pixel.
6. The method according to claim 5, wherein a display area of the display panel is divided into a plurality of sub-display areas, and the extraction coefficient matrices corresponding to the target sub-pixels of the same color in each of the sub-display areas are not identical;
The determining the pixel arrangement mode of the extracted pixel group corresponding to the target sub-pixel and the corresponding extraction coefficient matrix according to the row and column positions corresponding to the position information of the target sub-pixel includes:
determining the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel and the corresponding relation between the pre-stored position information of the sub-pixel and the pixel arrangement mode of the extraction pixel group;
determining the sub-display area to which the target sub-pixel belongs according to the row and column positions corresponding to the position information of the target sub-pixel;
determining an extraction coefficient matrix corresponding to the target sub-pixel according to a pixel arrangement mode of an extraction pixel group corresponding to the target sub-pixel and a sub-display area to which the target sub-pixel belongs;
determining an extraction pixel group corresponding to the target sub-pixel according to the row and column positions corresponding to the position information of the target sub-pixel, the pixel arrangement mode of the extraction pixel group corresponding to the target sub-pixel and the position information of the sub-pixel in the sub-display area to which the target sub-pixel belongs;
preferably, the display area is divided into a plurality of edge sub-display areas and a center sub-display area, and the plurality of edge sub-display areas surround the center sub-display area.
7. The optical data determination method according to claim 2, wherein the preset rule includes:
multiplying an initial optical data matrix corresponding to the extracted pixel group corresponding to the target sub-pixel by an extraction coefficient matrix corresponding to the target sub-pixel, and taking the obtained product as a transfer matrix; the initial optical data matrix corresponding to the extracted pixel group comprises initial optical data corresponding to each sub-pixel in the extracted pixel group;
determining actual optical data corresponding to the target sub-pixel under the first preset gray scale according to element values in the transfer matrix;
preferably, the determining, according to the element values in the transition matrix, actual optical data corresponding to the target sub-pixel under the first preset gray scale includes:
determining actual optical data corresponding to the target sub-pixel according to the magnitude relation between the absolute value of the difference value between the sum of the first set row elements and the sum of the second set row elements and the absolute value of the difference value between the sum of the first set column elements and the sum of the second set column elements in the transfer matrix;
wherein the first set row at least comprises a first row, and the second set row at least comprises an nth row;
The first setting column at least comprises a first column, and the second setting column at least comprises an Nth column.
8. The method for determining optical data according to claim 4, wherein the respectively acquiring the position information of each color sub-pixel in the display panel and marking the sub-pixels with rows and columns includes:
respectively obtaining optical data of each sub-pixel in the display panel under the condition that the display panel displays different primary color lattice pictures with second preset gray scales;
determining position information corresponding to primary color sub-pixels in the display panel according to the optical data of each sub-pixel in the display panel under the primary color lattice picture;
marking the sub-pixels in rows and columns according to the position information of each sub-pixel in the display panel;
preferably, determining the position information corresponding to the primary color sub-pixels in the display panel according to the optical data of each sub-pixel in the display panel under the primary color lattice picture includes:
correcting the position information with errors in a pre-stored initial position information table according to the actual positions of the lighted primary color sub-pixels in the display panel under the primary color lattice picture;
Preferably, the second preset gray level includes at least one gray level within 8-64 gray levels.
9. The method for determining optical data according to claim 1, wherein the acquiring the initial optical data of the display panel corresponding to the position of each sub-pixel under the white frame of the first preset gray level includes:
and acquiring initial optical data corresponding to the positions of all the sub-pixels of the display panel under the white picture of the first preset gray level through the monochromic optical equipment.
10. An optical data determining apparatus, comprising:
the acquisition module is used for acquiring initial optical data corresponding to the positions of all the sub-pixels of the display panel under a white picture under a first preset gray level;
the determining module is used for determining actual optical data corresponding to the target sub-pixel under the first preset gray level according to the initial optical data corresponding to each sub-pixel and a preset rule in an extraction pixel group corresponding to the target sub-pixel in the display panel;
wherein the extraction pixel group corresponding to the target sub-pixel comprises the target sub-pixel and surrounding sub-pixels thereof; the target sub-pixel is any sub-pixel in the display panel.
CN202311254231.0A 2023-09-26 2023-09-26 Optical data determining method and device Pending CN117275384A (en)

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Application Number Priority Date Filing Date Title
CN202311254231.0A CN117275384A (en) 2023-09-26 2023-09-26 Optical data determining method and device

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