Brightness correction method and correction device for display panel

Abstract

The application discloses a display panel brightness correction method and a correction device. The display panel brightness correction method comprises the following steps: obtaining an initial brightness information matrix of a detection image of a display panel under a preset gray scale, and obtaining a mean brightness information matrix according to the initial brightness information matrix; obtaining a brightness correction coefficient matrix of the display panel under the preset gray scale, and obtaining a brightness deviation matrix according to the mean brightness information matrix and the brightness correction coefficient matrix; and performing brightness correction on the detection image according to the brightness deviation matrix and the mean brightness information matrix. The display panel brightness correction method can remove the influence of brightness unevenness under the action of gravity on brightness correction, so as to improve the brightness uniformity of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a brightness correction method and device for a display panel. Background Technology

[0002] In the field of LCD displays, brightness calibration is typically required to ensure that the uniformity of the display panel meets specifications. During brightness calibration on the production line, the display panel is usually placed horizontally on the backlight. If there is no tempered glass on the backlight, the panel will sink due to gravity. Normally, the display panel displays an image with the corresponding brightness at the corresponding grayscale level. For example, when displaying a 0 grayscale image, the image captured by the camera should be completely black. However, due to the panel sinking, a phenomenon called uneven brightness with white corners appears on the panel; this is known as brightness unevenness under gravity.

[0003] Uneven brightness due to gravity can affect the compensation effect of brightness correction, causing the four corners of the display panel to appear dark after brightness correction. Therefore, it is necessary to eliminate the influence of uneven brightness due to gravity on brightness correction. Existing technologies use tempered glass on the backlight to prevent the panel from sagging; however, adding tempered glass not only increases costs but can also easily cause other display problems. Summary of the Invention

[0004] This application provides a brightness correction method and device for a display panel, which can remove the influence of uneven brightness under gravity on brightness correction, thereby improving the brightness uniformity of the display panel.

[0005] On one hand, embodiments of this application provide a brightness correction method for a display panel, comprising: acquiring an initial brightness information matrix of a detection image of the display panel at a preset grayscale, and obtaining an average brightness information matrix based on the initial brightness information matrix; acquiring a brightness correction coefficient matrix of the display panel at a preset grayscale, and obtaining a brightness deviation matrix based on the average brightness information matrix and the brightness correction coefficient matrix; and performing brightness correction on the detection image based on the brightness deviation matrix and the average brightness information matrix.

[0006] Optionally, in some embodiments of this application, the step of obtaining the initial brightness information matrix of the detection image of the display panel at a preset grayscale and obtaining the mean brightness information matrix based on the initial brightness information matrix specifically includes: obtaining the initial brightness information matrix of the detection image of the display panel at grayscale 0 to 255; dividing the display panel into multiple display areas, obtaining the average brightness value corresponding to the display area at grayscale 0 to 255 based on the initial brightness information matrix, and obtaining the mean brightness information matrix.

[0007] Optionally, in some embodiments of this application, the step of obtaining the brightness correction coefficient matrix of the display panel at a preset grayscale specifically includes: obtaining an initial brightness information matrix of the detection image of a horizontally placed and concave display panel at a preset grayscale; identifying regions with brightness defects based on the initial brightness information matrix; obtaining a first brightness ratio group corresponding to the average brightness value of the central region of a region with brightness defects and the average brightness value of at least four sub-regions symmetrically distributed around the central region; obtaining a second brightness ratio group corresponding to the average brightness value of the central region of the display panel in a horizontally placed and planar state and the average brightness value of at least four sub-regions symmetrically distributed around the central region; and obtaining the brightness correction coefficient matrix of the display panel at a preset grayscale based on the first brightness ratio group and the second brightness ratio group.

[0008] Optionally, in some embodiments of this application, the step of obtaining the initial brightness information matrix of the detection image of the horizontally placed and concave display panel at a preset grayscale, and identifying the region with brightness defects based on the initial brightness information matrix, specifically includes: obtaining a first brightness information matrix of the detection image of the horizontally placed and concave display panel at 0 grayscale and a second brightness information matrix at the bound-point grayscale; and identifying the region with brightness defects based on the first brightness information matrix and the second brightness information matrix.

[0009] Optionally, in some embodiments of this application, the step of obtaining a first brightness ratio group corresponding to the average brightness value of the central region of a region with brightness defects and the average brightness values ​​of at least four sub-regions symmetrically distributed around the central region specifically includes: obtaining the region with the largest brightness deviation among the regions with brightness defects according to the initial brightness information matrix; obtaining the first average brightness value of the central region of the region with the largest brightness deviation at 0 grayscale and the second average brightness value at the bound-point grayscale; obtaining the third average brightness value corresponding to the four sub-regions symmetrically distributed around the central region at 0 grayscale and the fourth average brightness value corresponding to the bound-point grayscale; calculating the first brightness ratios corresponding to the third average brightness value and the first average brightness value, and the fourth average brightness value and the second average brightness value, respectively, to obtain a first brightness ratio group.

[0010] Optionally, in some embodiments of this application, the step of obtaining a second brightness ratio group corresponding to the average brightness value of the central region and the average brightness values ​​of at least four sub-regions symmetrically distributed around the central region when the display panel is placed horizontally and is in a planar state specifically includes: obtaining the fifth average brightness value of the central region of the area with brightness defects at 0 grayscale and the sixth average brightness value at the bound-point grayscale when the display panel is placed horizontally and is in a planar state; and obtaining the seventh average brightness value of the four sub-regions symmetrically distributed around the central region at 0 grayscale and the eighth average brightness value at the bound-point grayscale; and calculating the second brightness ratio corresponding to the seventh average brightness value and the fifth average brightness value, and the eighth average brightness value and the sixth average brightness value, respectively, to obtain the second brightness ratio group.

[0011] Optionally, in some embodiments of this application, the step of obtaining the brightness correction coefficient matrix of the display panel at a preset grayscale based on the first brightness ratio group and the second brightness ratio group specifically includes: obtaining brightness correction coefficients corresponding to the four sub-regions based on the third average brightness value, the fourth average brightness value, the first brightness ratio corresponding to the first brightness ratio group, and the second brightness ratio corresponding to the second brightness ratio group; and obtaining the brightness correction coefficient matrix of the display panel at the preset grayscale based on the brightness correction coefficients through interpolation.

[0012] Optionally, in some embodiments of this application, the step of obtaining the brightness correction coefficient matrix of the display panel at a preset grayscale and obtaining the brightness deviation matrix based on the mean brightness information matrix and the brightness correction coefficient matrix specifically includes: multiplying the mean brightness information value corresponding to the mean brightness information matrix of the detected image of the display panel at 0 grayscale with the brightness correction coefficient value in the brightness correction coefficient matrix to obtain the corresponding brightness deviation value; repeating the above steps to obtain the brightness deviation matrix.

[0013] Optionally, in some embodiments of this application, the step of performing brightness correction on the detected image based on the brightness deviation matrix and the mean brightness information matrix specifically includes: subtracting the brightness deviation value in the brightness deviation matrix from the mean brightness information value in the mean brightness information matrix to obtain a target brightness value; repeating the above steps to obtain a target brightness matrix, and performing brightness correction on the detected image based on the target brightness matrix.

[0014] On the other hand, this application embodiment also provides a display panel brightness correction device, including: an acquisition module, a calculation module, and a correction module. The acquisition module is used to acquire an initial brightness information matrix of a detection image of the display panel at a preset grayscale, and identify areas with brightness defects based on the initial brightness information matrix. The calculation module is used to acquire a brightness correction coefficient matrix of the display panel at a preset grayscale, and obtain a brightness deviation matrix based on the mean brightness information matrix and the brightness correction coefficient matrix. The correction module is used to perform brightness correction on the detection image based on the brightness deviation matrix and the mean brightness information matrix.

[0015] This application provides a brightness correction method and apparatus for a display panel. The brightness correction method includes: acquiring an initial brightness information matrix of a detected image of the display panel at a preset grayscale, and obtaining an average brightness information matrix based on the initial brightness information matrix; acquiring a brightness correction coefficient matrix of the display panel at the preset grayscale, and obtaining a brightness deviation matrix based on the average brightness information matrix and the brightness correction coefficient matrix; and performing brightness correction on the detected image based on the brightness deviation matrix and the average brightness information matrix. This brightness correction method can remove the influence of brightness unevenness under gravity on brightness correction, thereby improving the brightness uniformity of the display panel and thus improving the display effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic flowchart of the brightness correction method for a display panel provided in an embodiment of this application;

[0018] Figure 2 A schematic diagram of the sub-process of step S10 in the brightness correction method for the display panel provided in this application embodiment;

[0019] Figure 3 This is one of the sub-process diagrams of step S20 in the brightness correction method for a display panel provided in this application embodiment;

[0020] Figure 4 This is a schematic diagram of a sub-process of step S201 in the brightness correction method for a display panel provided in this application embodiment;

[0021] Figure 5This is a schematic diagram of a sub-process of step S202 in the brightness correction method for a display panel provided in this application embodiment;

[0022] Figure 6 This is a schematic diagram of a sub-process of step S203 in the brightness correction method for a display panel provided in this application embodiment;

[0023] Figure 7 This is a schematic diagram of a sub-process of step S204 in the brightness correction method for a display panel provided in this application embodiment;

[0024] Figure 8 This is the second sub-process diagram of step S20 in the brightness correction method for the display panel provided in the embodiments of this application;

[0025] Figure 9 This is a schematic diagram of a sub-process of step S30 in the brightness correction method for a display panel provided in this application embodiment;

[0026] Figure 10 This is a schematic diagram of the structure of the brightness correction device for the display panel provided in the embodiments of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] This application discloses a brightness correction method and apparatus for a display panel, which can eliminate the influence of brightness unevenness under gravity on brightness correction, thereby improving the brightness uniformity of the display panel. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". The terms "first", "second", "third", etc., are used only as identifiers to distinguish different objects, and are not used to describe a specific order.

[0029] Please see Figure 1 , Figure 1 This is a schematic flowchart of the brightness correction method for a display panel provided in an embodiment of this application. Figure 1 As shown in the figure, this application embodiment provides a brightness correction method for a display panel, including:

[0030] S10. Obtain the initial brightness information matrix of the detection image of the display panel under the preset grayscale, and obtain the mean brightness information matrix based on the initial brightness information matrix.

[0031] Please see Figure 2 , Figure 2 A schematic diagram of the sub-process of step S10 in the brightness correction method for a display panel provided in this application embodiment. (See attached diagram.) Figure 2 As shown, step S10 specifically includes the following sub-steps:

[0032] S101. Obtain the initial brightness information matrix of the detection image of the display panel in grayscale from 0 to 255.

[0033] In this embodiment of the application, the initial brightness information of the detection image of a horizontally placed display panel in grayscale from 0 to 255 can be obtained by taking a picture with a camera, and the corresponding initial brightness information matrix can be obtained.

[0034] Specifically, the initial brightness information matrix includes the initial brightness information values ​​when the display panel is placed horizontally and is in a concave state due to gravity.

[0035] S102. Divide the display panel into multiple display areas, and obtain the average brightness value of each display area from grayscale 0 to grayscale 255 according to the initial brightness information matrix, to obtain the average brightness information matrix.

[0036] In this embodiment of the application, in order to avoid the influence of noise, the initial brightness information matrix corresponding to gray levels 0 to 255 is denoised, that is, the average value of the entire display panel is calculated. Specifically, the display panel is divided into multiple display areas, wherein each display area includes at least one pixel. The average brightness value of the display area at the corresponding gray level is obtained according to the initial brightness information matrix to obtain the average brightness information matrix.

[0037] S20. Obtain the brightness correction coefficient matrix of the display panel under the preset grayscale, and obtain the brightness deviation matrix based on the mean brightness information matrix and the brightness correction coefficient matrix.

[0038] Please see Figure 3 , Figure 3 This is one of the sub-process diagrams of step S20 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 3 As shown, step S20, which involves obtaining the brightness correction coefficient matrix of the display panel at a preset grayscale, specifically includes:

[0039] S201. Obtain the initial brightness information matrix of the detection image of the horizontally placed and concave display panel at a preset grayscale, and identify the areas with brightness defects based on the initial brightness information matrix.

[0040] In this embodiment, the display panel is placed horizontally on a backlight without tempered glass support, and is concave due to gravity. A detection image of the display panel is captured by a camera to obtain the initial brightness information matrix of the display panel at the corresponding grayscale level. Preferably, the detection conditions in this application are the same; for example, the camera used for all images mentioned earlier in this application is the same camera, and the exposure time is the same.

[0041] Please see Figure 4 , Figure 4 This is a schematic diagram of a sub-process of step S201 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 4 As shown, step S201 specifically includes:

[0042] S2011. Acquire the first brightness information matrix at 0 grayscale and the second brightness information matrix at the bound point grayscale of the detection image of the horizontally placed and concave display panel.

[0043] S2012. Identify the regions with brightness defects based on the first brightness information matrix and the second brightness information matrix.

[0044] Specifically, when there are multiple areas with brightness defects, the correction coefficient is obtained by identifying the area with the largest brightness deviation based on the first brightness information matrix and the second brightness information matrix.

[0045] S202. Obtain a first brightness ratio set corresponding to the average brightness value of the central region of a region with brightness defects and the average brightness value of at least four sub-regions located around the central region and symmetrically distributed.

[0046] Please see Figure 5 , Figure 5 This is a schematic diagram of a sub-process of step S202 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 5 As shown, step S202 specifically includes:

[0047] S2021. Based on the initial luminance information matrix, obtain the region with the largest luminance deviation among the regions with luminance defects.

[0048] S2022. Obtain the first average brightness value of the central region of the region with the largest brightness deviation at 0 gray level and the second average brightness value at the bound point gray level; and obtain the third average brightness value of the four sub-regions located around the central region and symmetrically distributed at 0 gray level and the fourth average brightness value at the bound point gray level.

[0049] S2023. Calculate the first brightness ratios corresponding to the third average brightness value and the first average brightness value, and the fourth average brightness value and the second average brightness value, respectively, to obtain the first brightness ratio group.

[0050] S203. Obtain a second brightness ratio group corresponding to the average brightness value of the central area and the average brightness value of at least four sub-areas symmetrically distributed around the central area when the display panel is placed horizontally and in a planar state.

[0051] Please see Figure 6 , Figure 6 This is a schematic diagram of a sub-process of step S203 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 6 As shown, step S203 specifically includes:

[0052] S2031. Obtain the fifth average brightness value at 0 grayscale and the sixth average brightness value at the binding point grayscale of the central area of ​​the area with brightness defects in the display panel when it is placed horizontally and in a flat state; and obtain the seventh average brightness value at 0 grayscale and the eighth average brightness value at the binding point grayscale of the four sub-areas located around the central area and symmetrically distributed.

[0053] S2032. Calculate the second brightness ratios corresponding to the seventh average brightness value and the fifth average brightness value, and the eighth average brightness value and the sixth average brightness value, respectively, to obtain the second brightness ratio group.

[0054] S204. Obtain the brightness correction coefficient matrix of the display panel under the preset grayscale based on the first brightness ratio group and the second brightness ratio group.

[0055] Specifically, assuming the brightness correction coefficient of the central region is 1, the formula for obtaining the brightness correction coefficients of the four sub-regions is as follows:

[0056] coeff 1,2,3,4 =lumi 1,2,3,4 *(1-r1' ,2,3,4 r 1,2,3,4 ) / lum0 1,2,3,4

[0057] Among them, coeff 1,2,3,4 This refers to the brightness correction coefficients corresponding to the four sub-regions, lum0. 1,2,3,4

[0058] This refers to the first average brightness value, r 1,2,3,4 This refers to the first brightness ratio, lumi. 1,2,3,4 This refers to the second average brightness value, r' 1,2,3,4 This refers to the second brightness ratio.

[0059] Please see Figure 7 , Figure 7 This is a schematic diagram of a sub-process of step S204 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 7 As shown, step S204 specifically includes:

[0060] S2041. Obtain the brightness correction coefficients corresponding to the four sub-regions based on the third average brightness value, the fourth average brightness value, the first brightness ratio corresponding to the first brightness ratio group, and the second brightness ratio corresponding to the second brightness ratio group.

[0061] S2042. Obtain the brightness correction coefficient matrix of the display panel at the preset grayscale by interpolating the brightness correction coefficient.

[0062] Please see Figure 8 , Figure 8 This is the second sub-process diagram of step S20 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 8 As shown, after obtaining the brightness correction coefficient matrix of the display panel at the preset grayscale in step S20, the specific steps include:

[0063] S211. Multiply the mean brightness information value in the mean brightness information matrix of the detected image of the display panel at 0 gray level with the brightness correction coefficient value in the brightness correction coefficient matrix to obtain the corresponding brightness deviation value.

[0064] S212. Repeat the above steps to obtain the brightness deviation matrix.

[0065] Specifically, obtain the brightness deviation matrix G. i The formula is:

[0066] G i =L'0*ratio i

[0067] Where L'0 refers to the mean brightness information matrix at gray level 0, and ratio i This refers to the brightness correction coefficient matrix.

[0068] S30. Perform brightness correction on the detected image based on the brightness deviation matrix and the mean brightness information matrix.

[0069] Please see Figure 9 , Figure 9 This is a schematic diagram of a sub-process of step S30 in the brightness correction method for a display panel provided in this application embodiment. For example... Figure 9 As shown, step S30 specifically includes:

[0070] S301. Subtract the brightness deviation value in the brightness deviation matrix from the mean brightness information value in the mean brightness information matrix to obtain the target brightness value.

[0071] S302. Repeat the above steps to obtain the target brightness matrix, and perform brightness correction on the detection image based on the target brightness matrix.

[0072] Specifically, obtain the target brightness matrix L” i The formula is:

[0073] L' i '=L' i -G i

[0074] Among them, L' i This refers to the mean brightness information matrix under non-zero gray levels, G i This refers to the brightness deviation matrix.

[0075] In this embodiment, after the correction to remove the brightness unevenness under gravity, the brightness information matrix of each gray level no longer contains the brightness unevenness under gravity. At this time, the phenomenon of black corners will not occur when brightness compensation is performed. The brightness correction method of this display panel can remove the influence of the brightness unevenness under gravity on the brightness correction, so as to improve the brightness uniformity of the display panel and thus improve the display effect.

[0076] Please see Figure 10 , Figure 10 This is a schematic diagram of the brightness correction device for a display panel provided in an embodiment of this application. Figure 10 As shown in the figure, this application embodiment also provides a display panel brightness correction device 100, including: an acquisition module 110, a calculation module 120 and a correction module 130. The acquisition module 110 is used to acquire the initial brightness information matrix of the detection image of the display panel under a preset grayscale, and identify the area with brightness defects according to the initial brightness information matrix. The calculation module 120 is used to acquire the brightness correction coefficient matrix of the display panel under the preset grayscale, and obtain the brightness deviation matrix according to the mean brightness information matrix and the brightness correction coefficient matrix. The correction module 130 is used to perform brightness correction on the detection image according to the brightness deviation matrix and the mean brightness information matrix.

[0077] This application provides a brightness correction method and apparatus for a display panel. The brightness correction method includes: acquiring an initial brightness information matrix of a detected image of the display panel at a preset grayscale, and obtaining an average brightness information matrix based on the initial brightness information matrix; acquiring a brightness correction coefficient matrix of the display panel at the preset grayscale, and obtaining a brightness deviation matrix based on the average brightness information matrix and the brightness correction coefficient matrix; and performing brightness correction on the detected image based on the brightness deviation matrix and the average brightness information matrix. This brightness correction method can remove the influence of brightness unevenness under gravity on brightness correction, thereby improving the brightness uniformity of the display panel and thus improving the display effect.

[0078] The above provides a detailed description of a brightness correction method and device for a display panel provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for brightness correction of a display panel, characterized in that, The method comprises the following steps: obtaining an initial brightness information matrix of a detection image of a display panel at a preset gray scale, and obtaining a mean brightness information matrix according to the initial brightness information matrix; obtaining a brightness correction coefficient matrix of the display panel at the preset gray scale, and obtaining a brightness deviation matrix according to the mean brightness information matrix and the brightness correction coefficient matrix; performing brightness correction on the detection image according to the brightness deviation matrix and the mean brightness information matrix. The step of obtaining the brightness correction coefficient matrix of the display panel at the preset gray scale comprises the following steps: obtaining an initial brightness information matrix of a detection image of a display panel placed horizontally and in a concave shape at a preset gray scale, and identifying a region with a brightness defect according to the initial brightness information matrix; obtaining a first brightness ratio group corresponding to the average brightness value of a central region of the region with the brightness defect and the average brightness value of at least four sub-regions symmetrically distributed around the central region; obtaining a second brightness ratio group corresponding to the average brightness value of the central region and the average brightness value of at least four sub-regions symmetrically distributed around the central region when the display panel is placed horizontally and in a flat state; obtaining the brightness correction coefficient matrix of the display panel at the preset gray scale according to the first brightness ratio group and the second brightness ratio group.

2. The brightness correction method of a display panel according to claim 1, wherein The step of obtaining the initial brightness information matrix of the detection image of the display panel at the preset gray scale and obtaining the mean brightness information matrix according to the initial brightness information matrix comprises the following steps: obtaining an initial brightness information matrix of a detection image of a display panel at 0 gray scale to 255 gray scale; dividing the display panel into a plurality of display regions, obtaining the average brightness value corresponding to the display regions at 0 gray scale to 255 gray scale according to the initial brightness information matrix, and obtaining the mean brightness information matrix.

3. The method of brightness correction of a display panel according to claim 1, wherein The step of obtaining the initial brightness information matrix of the detection image of the display panel placed horizontally and in a concave shape at the preset gray scale and identifying the region with the brightness defect according to the initial brightness information matrix comprises the following steps: obtaining a first brightness information matrix of the detection image of the display panel placed horizontally and in a concave shape at 0 gray scale and a second brightness information matrix at a bind point gray scale; identifying the region with the brightness defect according to the first brightness information matrix and the second brightness information matrix.

4. The method of brightness correction of a display panel according to claim 1, wherein The step of obtaining the first brightness ratio group corresponding to the average brightness value of the central region of the region with the brightness defect and the average brightness value of at least four sub-regions symmetrically distributed around the central region comprises the following steps: obtaining a region with the largest brightness deviation in the region with the brightness defect according to the initial brightness information matrix; obtaining a first average brightness value of the central region of the region with the largest brightness deviation at 0 gray scale and a second average brightness value at a bind point gray scale, and obtaining a third average brightness value corresponding to the four sub-regions around the central region at 0 gray scale and a fourth average brightness value corresponding to the four sub-regions around the central region at a bind point gray scale. A first brightness ratio corresponding to the third average brightness value and the first average brightness value, and a fourth average brightness value and the second average brightness value is calculated respectively to obtain a first brightness ratio group.

5. The method of brightness correction of a display panel according to claim 1, wherein The step of obtaining a second brightness ratio group corresponding to the average brightness values of the central region and the at least four sub-regions symmetrically distributed around the central region of the display panel in a horizontal and planar state, specifically comprises: Obtaining a fifth average brightness value of the central region of the region with brightness defects of the display panel in a horizontal and planar state at 0 gray scale and a sixth average brightness value at a bind point gray scale, and obtaining a seventh average brightness value of four sub-regions around the central region at 0 gray scale and an eighth average brightness value at a bind point gray scale respectively; A second brightness ratio corresponding to the seventh average brightness value and the fifth average brightness value, and the eighth average brightness value and the sixth average brightness value is calculated respectively to obtain a second brightness ratio group.

6. The method of brightness correction of a display panel according to claim 4, wherein The step of obtaining a brightness correction coefficient matrix of the display panel at a preset gray scale according to the first brightness ratio group and the second brightness ratio group, specifically comprises: Obtaining a brightness correction coefficient corresponding to the four sub-regions according to the third average brightness value, the fourth average brightness value, the corresponding first brightness ratio in the first brightness ratio group, and the corresponding second brightness ratio in the second brightness ratio group; Obtaining a brightness correction coefficient matrix of the display panel at a preset gray scale by interpolation according to the brightness correction coefficient.

7. The method of brightness correction of a display panel according to claim 1, wherein The step of obtaining a brightness correction coefficient matrix of the display panel at a preset gray scale, and obtaining a brightness deviation matrix according to the average brightness information matrix and the brightness correction coefficient matrix, specifically comprises: Multiplying the average brightness information value corresponding to the average brightness information matrix of the detection image of the display panel at 0 gray scale and the brightness correction coefficient value in the brightness correction coefficient matrix to obtain a corresponding brightness deviation value; Repeating the above steps to obtain a brightness deviation matrix.

8. The method of brightness correction of a display panel according to claim 1, wherein, The step of correcting the brightness of the detection image according to the brightness deviation matrix and the average brightness information matrix, specifically comprises: Subtracting the brightness deviation value in the brightness deviation matrix from the corresponding average brightness information value in the average brightness information matrix to obtain a target brightness value; Repeating the above steps to obtain a target brightness matrix, and correcting the brightness of the detection image according to the target brightness matrix.

9. A display panel luminance correction device, characterized by comprising: Comprises: An acquisition module is used for acquiring an initial brightness information matrix of a detection image of a display panel at a preset gray scale, and obtaining an average brightness information matrix according to the initial brightness information matrix; A calculation module is used for obtaining a brightness correction coefficient matrix of the display panel at a preset gray scale, and obtaining a brightness deviation matrix according to the average brightness information matrix and the brightness correction coefficient matrix; A correction module is used for correcting the brightness of the detection image according to the brightness deviation matrix and the average brightness information matrix. The display panel brightness correction device is also used for obtaining initial brightness information matrix of a detection image of the display panel placed horizontally and in a concave shape under a preset gray scale, and identifying a region with brightness defects according to the initial brightness information matrix; A first brightness ratio group corresponding to average brightness values of a central region of the region with brightness defects and at least four sub-regions symmetrically distributed around the central region is obtained respectively, and a second brightness ratio group corresponding to average brightness values of the central region and at least four sub-regions symmetrically distributed around the central region when the display panel is placed horizontally and in a flat state is obtained respectively; and a brightness correction coefficient matrix of the display panel under a preset gray scale is obtained according to the first brightness ratio group and the second brightness ratio group.

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