CN112489583B - Mura compensation method and compensation device of display panel and display device - Google Patents
Mura compensation method and compensation device of display panel and display device Download PDFInfo
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Abstract
The embodiment of the invention discloses a mura compensation method, a compensation device and a display device of a display panel, wherein the method comprises the steps of calculating initial compensation values of sub-pixels under a set gray scale; searching non-integer compensation values in the initial compensation values; resetting the compensation value of the set sub-pixel to a preset integer compensation value, wherein the average value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value; the setting sub-pixels comprise n m sub-pixels around the sub-pixels corresponding to the non-integer compensation values; m and n are integers greater than or equal to 2. The technical scheme provided by the embodiment of the invention ensures that the compensation effect of each sub-pixel is better, improves the display uniformity of the display panel and solves the problem that the display of the existing display panel is uneven, such as snowflakes and the like.
Description
Technical Field
The embodiment of the invention relates to the technical field of display panels, in particular to a mura compensation method and a mura compensation device of a display panel and a display device.
Background
Along with the development of display technology and the improvement of people's standard of living, the display effect to display panel requires more and more highly, and current display panel has the uneven problem of demonstration when showing, influences user experience.
Disclosure of Invention
The embodiment of the invention provides a mura compensation method and a mura compensation device of a display panel and a display device, and aims to solve the problem that an existing display panel is uneven in display.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a mura compensation method for a display panel, including:
calculating the initial compensation value of each sub-pixel under the set gray scale;
searching for a non-integer compensation value in the initial compensation values;
resetting the compensation value of the set sub-pixel to a preset integer compensation value, wherein the average value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value;
wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2.
Further, the preset integer compensation value of the preset sub-pixel comprises a first integer and a second integer; wherein the first integer is equal to a value of an integer portion of the non-integer compensation value.
Further, the first integer and the second integer are arranged in a dispersed manner in the set sub-pixel.
Further, the value ranges of m and n are: m is more than or equal to 3 and less than or equal to 5, and n is more than or equal to 3 and less than or equal to 5.
Further, the mura compensation method of the display panel further includes:
when the difference value between the initial compensation value of the first sub-pixel in the set sub-pixel and the preset integer compensation value is greater than a preset threshold value, the compensation value of the first sub-pixel is kept as the initial compensation value, the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel are reset, and the mean value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel is equal to the non-integer compensation value.
Further, when the preset gray scale is less than or equal to 32 gray scales, the preset threshold value is equal to 2;
when the preset gray scale is greater than 32 gray scales and less than or equal to 64 gray scales, the preset threshold is greater than 2 and less than or equal to 5;
when the preset gray scale is larger than 64 gray scales, the preset threshold is larger than 5 and smaller than or equal to 10.
Further, the number of n × m sub-pixels around the sub-pixel corresponding to different non-integer compensation values is different.
Further, resetting the compensation value of the set sub-pixel to a preset integer compensation value includes:
resetting the compensation value of n m sub-pixels taking the sub-pixel corresponding to the non-integer compensation value as the center as a preset integer compensation value.
In a second aspect, an embodiment of the present invention provides a mura compensation apparatus for a display panel, including:
the calculation module is used for calculating the initial compensation value of each sub-pixel under the set gray scale;
the query module is used for searching non-integer compensation values in the initial compensation values;
the compensation data refreshing module is used for resetting the compensation value of the set sub-pixel to a preset integer compensation value, the average value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value; wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2.
In a third aspect, an embodiment of the present invention provides a display device, including a display panel and the mura compensation device of the display panel of the second aspect.
The mura compensation method for a display panel according to the embodiment of the present invention resets the compensation values of n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value to the preset integer compensation value, and the average value of the preset integer compensation values of n × m sub-pixels around the sub-pixel corresponding to the reset non-integer compensation value is equal to the non-integer compensation value, so as to achieve the distributed compensation of the non-integer compensation value in the initial compensation value, and the compensation precision is higher, and in addition, the difference between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed the preset threshold value, the compensation effect of the set sub-image after the compensation value is reset is close to that of the initial compensation value, the compensation effect of each sub-pixel is guaranteed to be good, the display uniformity of the display panel is improved, and the problem that display unevenness such as snowflakes exists in the existing display panel during display is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a flowchart of a mura compensation method of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating distribution of sub-pixels set by the mura compensation method of the display panel according to the embodiment of the invention;
FIG. 3 is a schematic diagram illustrating distribution of sub-pixels in accordance with another mura compensation method for a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the distribution of sub-pixels set by a mura compensation method for a display panel according to another embodiment of the present invention;
FIG. 5 is a flowchart of another mura compensation method for a display panel according to an embodiment of the present invention;
FIG. 6 is a flowchart of a mura compensation method of a display panel according to an embodiment of the present invention;
FIG. 7 is a flowchart of a mura compensation method of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a mura compensation apparatus of a display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail 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 of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the conventional display panel has display unevenness during display, and the inventors have studied to find that the reason why such a problem occurs is that the conventional display panel can compensate only a relatively serious mura problem during display compensation, and that the display unevenness such as snowflake (Sandy mura) still occurs during display.
Based on the above technical problem, the present embodiment proposes the following solutions:
fig. 1 is a flowchart of a mura compensation method of a display panel according to an embodiment of the present invention. Referring to fig. 1, a mura compensation method for a display panel according to an embodiment of the present invention includes:
s101, calculating initial compensation values of the sub-pixels under the set gray scale.
Specifically, the initial compensation values corresponding to the sub-pixels under the set gray scale may be sequentially calculated from left to right in each row from the first row to the last row, and the calculated initial compensation values of the sub-pixels may be in one-to-one correspondence with the sub-pixels.
And S102, searching for a non-integer compensation value in the initial compensation values.
Specifically, from the first row to the last row, each row may sequentially search for the non-integer compensation value in the initial compensation values from left to right, and correspondingly find the sub-pixel corresponding to each non-integer compensation value.
S103, resetting the compensation value of the set sub-pixel to a preset integer compensation value, wherein the average value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value; wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2.
Specifically, the sub-pixel is configured to include n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value, and the sub-pixel corresponding to the non-integer compensation value may be located at a central position of the n × m sub-pixels or other positions except the central position. The reset average value of the preset integer compensation values of the set sub-pixels is equal to the non-integer compensation value, so that the compensation values of the n x m sub-pixels can be jointly fitted to achieve the compensation effect of the non-integer compensation value after being reset, and compared with a scheme of directly discarding the non-integer compensation value in the prior art, the method can better compensate the sub-pixels corresponding to the non-integer compensation value, and better compensate uneven display of a display panel. In addition, the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed the preset threshold value, so that the compensation effect of the set sub-pixel after the compensation value is reset is close to the compensation effect of the initial compensation value, the compensation effect of each sub-pixel is better, and the display unevenness of the display panel is better compensated.
It should be noted that the preset threshold may be determined according to the compensation requirement of the display panel, and the embodiment is not particularly limited.
The mura compensation method for a display panel provided in this embodiment resets the compensation values of n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value to the preset integer compensation value, and the average value of the preset integer compensation values of n × m sub-pixels around the sub-pixel corresponding to the reset non-integer compensation value is equal to the non-integer compensation value, so as to achieve the distributed compensation of the non-integer compensation value in the initial compensation value, and achieve higher compensation precision, and in addition, the difference between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed the preset threshold value, the compensation effect of the set sub-image after the compensation value is reset is close to that of the initial compensation value, the compensation effect of each sub-pixel is guaranteed to be good, the display uniformity of the display panel is improved, and the problem that display unevenness such as snowflakes exists in the existing display panel during display is solved.
Optionally, the preset integer compensation value of the sub-pixel is set to include a first integer and a second integer; wherein the first integer is equal to a value of an integer portion of the non-integer compensation value.
Specifically, the first integer is directly determined according to the integer part of the non-integer compensation value, and the second integer may be selected from the integers closest to the first integer, for example, the non-integer compensation value is 64.25, and then the first integer is equal to the value of the integer part of the non-integer compensation value, i.e., the first integer is equal to 64, and the second integer may be the integer compensation value closest to the non-integer compensation value, for example, the second integer may be 65. By means of the arrangement, the value of the first integer can be rapidly determined during compensation, and then the value of the second integer is determined by calculating the mean value of the n × m first integers and the second integer to be equal to the non-integer compensation value, so that the calculation difficulty is reduced, and the determination speed of the integer compensation value is improved.
Optionally, the value ranges of m and n are: m is more than or equal to 3 and less than or equal to 5, and n is more than or equal to 3 and less than or equal to 5.
The set sub-pixels include n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value, that is, the set sub-pixels include 3 × 3 sub-pixels, 3 × 4 sub-pixels, 3 × 5 sub-pixels, 4 × 3 sub-pixels, 4 × 4 sub-pixels, 4 × 5 sub-pixels, or 5 × 5 sub-pixels around the sub-pixel corresponding to the non-integer compensation value. For example, when the first non-integer compensation value is compensated as needed, the setting sub-pixel includes 3 × 3 sub-pixels around the sub-pixel corresponding to the non-integer compensation value, and when the second non-integer compensation value is compensated, the setting sub-pixel includes 3 × 3 sub-pixels or 4 × 4 sub-pixels around the sub-pixel corresponding to the non-integer compensation value, and the average value of the preset integer compensation values of the reset setting sub-pixel may be equal to the non-integer compensation value.
Specifically, m is more than or equal to 3 and less than or equal to 5, n is more than or equal to 3 and less than or equal to 5, so that the number of the set sub-pixels corresponding to the sub-pixels corresponding to each non-integer compensation value is less, and the number of the sub-pixels needing to reset the compensation value is less, thereby reducing the algorithm difficulty on the one hand, avoiding the influence on the compensation effect of the initial compensation value due to more sub-pixels, and ensuring that the display panel has a better compensation effect.
Optionally, fig. 2 is a schematic distribution diagram of the setting sub-pixels of the mura compensation method for the display panel according to the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 2, the first integer and the second integer are arranged in a dispersed manner in the setting sub-pixel.
Specifically, this arrangement can reduce the problem of display unevenness due to the aggregation of the first and second integers. Fig. 2 exemplarily shows a case where the non-integer compensation value is 64.25, the first integer is equal to a value of an integer part of the non-integer compensation value, i.e., the first integer is equal to 64, and the second integer may be the nearest integer compensation value to the non-integer compensation value, i.e., the second integer is 65, and the first integer 64 and the second integer 65 are arranged in a dispersed manner, with only one second integer 65 per row and column.
Exemplarily, fig. 3 is a schematic distribution diagram of the setting sub-pixels of another mura compensation method for a display panel according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 3, when the non-integer compensation value is 64.5, the first integer is equal to the value of the integer part of the non-integer compensation value, i.e., the first integer is equal to 64, the second integer may be the nearest integer compensation value to the non-integer compensation value, i.e., the second integer is 65, and the first integer 64 and the second integer 65 are distributed, and each row and each column have two first integers 64 and two second integers 65. Fig. 4 is a schematic distribution diagram of the setting sub-pixels of still another mura compensation method for a display panel according to an embodiment of the invention. On the basis of the above embodiment, referring to fig. 4, when the non-integer compensation value is 64.75, the first integer is equal to the value of the integer part of the non-integer compensation value, i.e., the first integer is equal to 64, the second integer may be the nearest integer compensation value to the non-integer compensation value, i.e., the second integer is 65, and the first integer 64 and the second integer 65 are distributed with only one first integer 64 per row and column.
Optionally, fig. 5 is a flowchart of another mura compensation method for a display panel according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 5, the mura compensation method for a display panel provided by the embodiment of the invention includes:
s101, calculating initial compensation values of the sub-pixels under the set gray scale.
S102, searching for a non-integer compensation value in the initial compensation values.
S201, when a difference between the initial compensation value of the first sub-pixel in the set sub-pixel and the preset integer compensation value is greater than a preset threshold, maintaining the compensation value of the first sub-pixel as the initial compensation value, and resetting the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel, where an average value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel is equal to the non-integer compensation value.
Specifically, the size of the preset threshold may vary according to different gray levels, the preset threshold may be 1, 2, 3, 4, 5, or 10, and the first sub-pixel is any sub-pixel in which the initial compensation value in the sub-pixel is set to be an integer. When the difference value between the initial compensation value and the preset integer compensation value of the first sub-pixel in the set sub-pixel is larger than the preset threshold value, the compensation value of the first sub-pixel is kept as the initial compensation value, the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel are reset, the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel is set to be equal to the non-integer compensation value, the compensation effect of the first sub-pixel is guaranteed, meanwhile, the compensation effect of the sub-pixel corresponding to the non-integer compensation value is improved, and the compensation effect of the whole display picture of the display panel is further improved.
Optionally, when the preset gray scale is less than or equal to 32 gray scales, the preset threshold is equal to 2; when the preset gray scale is greater than 32 gray scales and less than or equal to 64 gray scales, the preset threshold is greater than 2 and less than or equal to 5; when the preset gray level is greater than 64 gray levels, the preset threshold is greater than 5 and less than or equal to 10.
For example, when the preset gray scale is less than or equal to 32 gray scales, and when the initial compensation value of the set sub-pixel and the difference between the first integer and the second integer are both less than or equal to 2, the compensation value of the set sub-pixel corresponding to the non-integer compensation value is reset, and when the difference between the initial compensation value of the first sub-pixel in the set sub-pixel and the first integer or the second integer is greater than 2, the compensation value of the first sub-pixel is maintained as the initial compensation value, the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel are reset, and the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel is equal to the non-integer compensation value.
When the preset gray scale is greater than 32 gray scales and less than or equal to 64 gray scales, the preset threshold is greater than 2, and the preset threshold is less than or equal to 5. For example, it may be set that the initial compensation value of the set sub-pixel and the difference between the first integer and the second integer are both less than or equal to 5, the compensation value of the set sub-pixel corresponding to the non-integer compensation value is reset, when the difference between the initial compensation value of the first sub-pixel of the set sub-pixel and the first integer or the second integer is greater than 5, the compensation value of the first sub-pixel is maintained as the initial compensation value, the initial compensation values of the sub-pixels except the first sub-pixel of the set sub-pixel are reset, and the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel of the set sub-pixel is equal to the non-integer compensation value.
When the preset gray level is greater than 64 gray levels, the preset threshold is greater than 5 and less than or equal to 10. For example, it may be set that the initial compensation value of the set sub-pixel and the difference between the first integer and the second integer are both less than or equal to 10, the compensation value of the set sub-pixel corresponding to the non-integer compensation value is reset, when the difference between the initial compensation value of the first sub-pixel of the set sub-pixel and the first integer or the second integer is greater than 10, the compensation value of the first sub-pixel is maintained as the initial compensation value, the initial compensation values of the sub-pixels except the first sub-pixel of the set sub-pixel are reset, and the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel of the set sub-pixel is equal to the non-integer compensation value.
Because the compensation precision requirements of the pictures with different gray scales of the display panel on the display picture are different, the lower the gray scale is, the higher the compensation precision requirement is, the higher the gray scale is, the lower the compensation precision requirement is, and different values of preset threshold values are selected in different gray scale ranges, the compensation calculation difficulty of the pictures with higher gray scales can be reduced while the good compensation on uneven display is ensured.
Optionally, fig. 6 is a flowchart of a mura compensation method of a display panel according to another embodiment of the present invention. On the basis of the above embodiments, referring to fig. 6, the mura compensation method for a display panel provided by the embodiment of the invention includes:
s101, calculating initial compensation values of the sub-pixels under the set gray scale.
S301, searching non-integer compensation values in the initial compensation values from left to right in sequence.
Specifically, the non-integer compensation values in the initial compensation values are sequentially searched from left to right, the initial compensation values corresponding to all the sub-pixels can be sequentially traversed, data omission is not prone to occurring, meanwhile, the non-integer compensation values in the initial compensation values are sequentially searched from left to right, and the algorithm is simpler and easy to achieve.
S302, sequentially resetting the compensation values of the set sub-pixels to preset integer compensation values from left to right, wherein the average value of the reset preset integer compensation values of the set sub-pixels is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value; wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2.
Specifically, the compensation values of the set sub-pixels are sequentially reset to the preset integer compensation values from left to right, the initial compensation values corresponding to the set sub-pixels can be sequentially traversed, and data omission is not easy to occur.
Optionally, the number of n × m sub-pixels around the sub-pixel corresponding to different non-integer compensation values is different.
In particular, the setting can give priority to the degree of proximity of the preset integer compensation value and the initial compensation value during calculation, and the specific numerical values of n and m are adjusted as required, so that the calculation difficulty is reduced.
Optionally, fig. 7 is a flowchart of a mura compensation method of a display panel according to another embodiment of the present invention. On the basis of the above embodiments, referring to fig. 7, the mura compensation method for a display panel provided by the embodiment of the invention includes:
s101, calculating initial compensation values of the sub-pixels under the set gray scale.
And S102, searching for a non-integer compensation value in the initial compensation values.
S401, resetting the compensation value of the n × m sub-pixels centered on the sub-pixel corresponding to the non-integer compensation value to a preset integer compensation value.
Specifically, the display center of the n × m sub-pixels is set to be located at the sub-pixel corresponding to the non-integer compensation value, so that after the compensation value of the n × m sub-pixels centering on the sub-pixel corresponding to the non-integer compensation value is reset to the preset integer compensation value, the overall compensation effect of the n × m sub-pixels centering on the sub-pixel corresponding to the non-integer compensation value is closer to the effect that the sub-pixels corresponding to the non-integer compensation value need to be compensated, and the display effect of the display panel is further improved.
Fig. 8 is a schematic structural diagram of a mura compensation apparatus of a display panel according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 8, the mura compensation apparatus for a display panel according to an embodiment of the present invention includes:
and the calculating module 81 is used for calculating the initial compensation value of each sub-pixel under the set gray scale.
And the query module 82 is used for searching the non-integer compensation value in the initial compensation value.
A compensation data refreshing module 83, configured to reset a compensation value of a set sub-pixel to a preset integer compensation value, where a mean value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and a difference between the preset integer compensation value of each set sub-pixel and a corresponding initial compensation value does not exceed a preset threshold, where the set sub-pixel includes n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2.
The mura compensation apparatus of a display panel provided in this embodiment includes a calculation module, an inquiry module, and a compensation data refresh module, wherein the calculation module calculates an initial compensation value of each sub-pixel under a set gray scale, the inquiry module searches for a non-integer compensation value in the initial compensation value, and the compensation data refresh module resets the compensation value of the set sub-pixel to a preset integer compensation value, an average value of the reset preset integer compensation values of the set sub-pixel is equal to the non-integer compensation value, and a difference between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold, so that the non-integer compensation value in the initial compensation value is dispersedly compensated, the compensation precision is higher, and in addition, a difference between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold, the compensation effect of the set sub-image after the compensation value is reset is close to that of the initial compensation value, the compensation effect of each sub-pixel is guaranteed to be good, the display uniformity of the display panel is improved, and the problem that display unevenness such as snowflakes exists in the existing display panel during display is solved.
Fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention. On the basis of the foregoing embodiments, referring to fig. 9, the display device 200 provided in this embodiment includes the display panel 100 and the mura compensation device 300 of the display panel provided in any of the above embodiments, and has the beneficial effects of the mura compensation device of the display panel provided in any of the above embodiments, which are not described herein again. The display device 200 may include a mobile terminal such as a mobile phone and a wearable device.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A mura compensation method of a display panel, comprising:
calculating the initial compensation value of each sub-pixel under the set gray scale;
searching for a non-integer compensation value in the initial compensation values;
resetting the compensation value of the set sub-pixels to a preset integer compensation value, wherein the average value of the reset preset integer compensation value of the set sub-pixels is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value;
wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2;
when the difference value between the initial compensation value of the first sub-pixel in the set sub-pixel and a preset integer compensation value is greater than a preset threshold value, keeping the compensation value of the first sub-pixel as the initial compensation value, and resetting the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel;
setting the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the sub-pixels to be equal to the non-integer compensation value.
2. The mura compensation method of a display panel according to claim 1,
the preset integer compensation value of the set sub-pixel comprises a first integer and a second integer; wherein the first integer is equal to a value of an integer portion of the non-integer compensation value.
3. The mura compensation method of the display panel according to claim 2, wherein:
the first integer and the second integer are distributed in the setting sub-pixel.
4. The mura compensation method of the display panel according to claim 1, wherein,
the value ranges of m and n are as follows: m is more than or equal to 3 and less than or equal to 5, and n is more than or equal to 3 and less than or equal to 5.
5. The mura compensation method of a display panel according to claim 1,
when the preset gray scale is less than or equal to 32 gray scales, the preset threshold value is equal to 2;
when the preset gray scale is greater than 32 gray scales and less than or equal to 64 gray scales, the preset threshold is greater than 2 and less than or equal to 5;
when the preset gray scale is larger than 64 gray scales, the preset threshold is larger than 5 and smaller than or equal to 10.
6. The mura compensation method of the display panel according to claim 1, wherein,
the number of n m sub-pixels around the sub-pixel corresponding to different non-integer compensation values is different.
7. The mura compensation method of claim 1, wherein resetting the compensation values of the set sub-pixels to preset integer compensation values comprises:
resetting the compensation value of n m sub-pixels taking the sub-pixel corresponding to the non-integer compensation value as the center as a preset integer compensation value.
8. A mura compensation apparatus of a display panel, comprising:
the calculation module is used for calculating the initial compensation value of each sub-pixel under the set gray scale;
the query module is used for searching non-integer compensation values in the initial compensation values;
the compensation data refreshing module is used for resetting the compensation value of the set sub-pixels to a preset integer compensation value, the average value of the reset preset integer compensation value of the set sub-pixels is equal to the non-integer compensation value, and the difference value between the preset integer compensation value of each set sub-pixel and the corresponding initial compensation value does not exceed a preset threshold value; wherein the set sub-pixels comprise n × m sub-pixels around the sub-pixel corresponding to the non-integer compensation value; m and n are integers greater than or equal to 2;
when the difference value between the initial compensation value of the first sub-pixel in the set sub-pixel and the preset integer compensation value is larger than a preset threshold value, keeping the compensation value of the first sub-pixel as the initial compensation value, and resetting the initial compensation values of the sub-pixels except the first sub-pixel in the set sub-pixel;
and setting the average value of the preset integer compensation values of the sub-pixels except the first sub-pixel in the sub-pixels to be equal to the non-integer compensation value.
9. A display device, comprising: a mura compensation apparatus of a display panel and the display panel of claim 8.
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