CN111583863B - Mura compensation method and device and display panel - Google Patents
Mura compensation method and device and display panel Download PDFInfo
- Publication number
- CN111583863B CN111583863B CN202010449376.6A CN202010449376A CN111583863B CN 111583863 B CN111583863 B CN 111583863B CN 202010449376 A CN202010449376 A CN 202010449376A CN 111583863 B CN111583863 B CN 111583863B
- Authority
- CN
- China
- Prior art keywords
- display
- mura
- sub
- area
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 241001270131 Agaricus moelleri Species 0.000 claims abstract description 65
- 230000002596 correlated effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 43
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 235000019557 luminance Nutrition 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Landscapes
- 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)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the invention discloses a mura compensation method, a mura compensation device and a display panel, wherein the mura compensation method is used for performing mura compensation on the display panel and comprises the steps of dividing a display area of the display panel into at least one display sub-area; determining the number of binding point gray scales according to the mura levels of all display sub-areas under the set display picture, wherein the mura levels of the display sub-areas are determined by the ratio of the gray value sum of the sub-pixels positioned in the mura areas in the display sub-areas to the gray value sum of all the sub-pixels in the display sub-areas; and performing mura compensation on the display panel according to the determined number of the binding point gray scales. The mura compensation method of the embodiment is beneficial to improving the mura compensation efficiency and improving the compensation effect.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a mura compensation method, a mura compensation device and a display panel.
Background
Organic light emitting display panels are increasingly used due to their advantages of wide viewing angle, high contrast, and low power consumption.
The characteristics of devices in the display panel are inevitably different due to factors such as the manufacturing process and the technology of the organic light-emitting display panel, so that the display brightness of the display panel is not uniform, namely mura. The existing solution to the mura problem is mura compensation, however, the efficiency of the existing mura compensation is low, the production line capacity is low, and the problem that the mura compensation effect is poor exists in part of display panels.
Disclosure of Invention
The invention provides a mura compensation method, a mura compensation device and a display panel, which aim to improve the mura compensation efficiency, improve the production capacity of a production line and ensure the mura compensation effect.
In a first aspect, an embodiment of the present invention provides a mura compensation method for performing mura compensation on a display panel, including:
dividing a display area of a display panel into at least one display sub-area;
determining the number of binding point gray scales according to the mura levels of all display sub-areas under the set display picture, wherein the mura levels of the display sub-areas are determined by the ratio of the gray value sum of the sub-pixels positioned in the mura areas in the display sub-areas to the gray value sum of all the sub-pixels in the display sub-areas;
and performing mura compensation on the display panel according to the determined number of the binding point gray scales.
Optionally, dividing the display area of the display panel into at least one display sub-area includes:
and dividing the display area of the display panel into at least two display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extension direction of the data line.
Optionally, dividing a display area of the display panel into at least two display sub-areas according to a distance between sub-pixels and the driving chip in the display panel along the extending direction of the data line, including:
and dividing the display area of the display panel into three display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extension direction of the data line.
Optionally, determining the number of binding point gray scales according to the mura level in the display sub-area under the set display picture, including:
and determining the number of binding point gray scales according to the number of the display sub-regions with the mura levels reaching the preset levels.
Optionally, the number of the binding point gray scales is positively correlated with the number of the display sub-regions where the mura level reaches the preset level.
Optionally, determining the number of binding point gray scales according to the mura levels in each display sub-region under the set display picture, includes:
under the condition of setting a display picture, calculating the mura proportion of each display subarea by adopting the following formula:
determining the mura grade according to the mura proportion of the display sub-area;
and determining the number of binding point gray scales according to the determined mura grade of each display subarea.
Optionally, dividing the display area of the display panel into at least one display sub-area includes:
taking the whole display area of the display panel as a display sub-area;
determining the number of binding point gray scales according to the mura levels in each display sub-area under the set display picture, comprising the following steps:
and determining the number of binding point gray scales according to the mura levels in the whole display area in the set display picture.
Optionally, before dividing the display area of the display panel into at least one display sub-area, the method includes:
and acquiring and setting the brightness of each sub-pixel under a display picture by adopting a camera, and identifying a mura area and a non-mura area of the display area by adopting a Demura device.
In a second aspect, an embodiment of the present invention further provides a mura compensation apparatus, including:
the display device comprises a sub-region dividing module, a display module and a display module, wherein the sub-region dividing module is used for dividing a display region of a display panel into at least one display sub-region;
the binding point gray scale number determining module is used for determining the number of the binding point gray scales according to the mura levels of all display sub-areas under the set display picture, wherein the mura levels are determined by the ratio of the gray scale value sum of the sub-pixels positioned in the mura areas in the display sub-areas to the gray scale value sum of all the sub-pixels in the display sub-areas;
and the compensation module is used for carrying out mura compensation on the display panel according to the determined number of the binding point gray scales.
In a third aspect, an embodiment of the present invention further provides a display panel, where mura compensation is performed by using the mura compensation method provided in the first aspect.
According to the mura compensation method and device and the display panel, the number of the binding point gray scales is determined according to the mura grade of each display sub-area under the set display picture, and the mura compensation is performed on the display panel according to the determined number of the binding point gray scales, so that the mura compensation can be performed by setting different numbers of the binding point gray scales for different display panels. Less that can set up to the tie point grey scale number of the display panel that whole mura grade is lighter avoids the overcompensation to the better display panel of display effect, and then shortens mura compensation time, improves mura compensation efficiency, improves and produces the line productivity. And can make the number of tie point grey scale to the heavier display panel of whole mura grade can suitably increase, and then avoid the undercompensation to the display panel that the display effect is relatively poor, and then can carry out abundant mura compensation to the display panel that the display effect is relatively poor, guarantee that the display panel can have good display effect behind the mura compensation. Compared with the method in the prior art, the mura compensation method of the embodiment can determine the whole mura degree of the display panel according to the mura grade of the display sub-region aiming at different display panels, and set different binding point gray scale numbers according to the whole mura degree of the display panel to perform mura compensation, thereby being beneficial to improving the mura compensation efficiency and improving the mura compensation effect.
Drawings
FIG. 1 is a flow chart of a mura compensation method provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a flow chart of another mura compensation method provided by an embodiment of the present invention;
FIG. 4 is a flow chart of another mura compensation method provided by an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a mura compensation apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying 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 described in the background art, the conventional mura compensation has low efficiency, which causes low production line productivity, and a part of display panels still have poor mura compensation effect. The inventor researches and discovers that the above problem occurs because when the existing display panel is subjected to mura compensation, a picture with a fixed gray scale number is usually adopted for the display panel with the same model of the same manufacturer for compensation, namely, the gray scale number adopted for the mura compensation is fixed corresponding to each display panel with the same model of the same manufacturer, for example, the compensation is carried out under 16 gray scales, 32 gray scales, 64 gray scales, 128 gray scales and 255 gray scales. However, due to the manufacturing process of the display panel, the device characteristics of the display panel are different, and the display effect of the display panel is also different. The existing mura compensation for the display panel does not consider the difference of the characteristics and the display effect of the display panel, but compensates under the picture with the fixed gray scale number, so that over compensation can exist in part of the display panel with better display effect (the part of the display panel with better display effect can compensate under the display picture with the gray scale number less than the fixed gray scale number), and the mura compensation efficiency is reduced. Some display panels with poor display effect may have under-compensation (some display panels with poor display effect may need to perform compensation under a display picture with more than a fixed gray scale number), so that the display panels with poor display effect may have under-compensation, resulting in poor mura compensation effect.
Based on the above problem, an embodiment of the present invention provides a mura compensation method, and fig. 1 is a flowchart of the mura compensation method provided by the embodiment of the present invention, and referring to fig. 1, the mura compensation method includes:
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 2, the display panel includes a display area AA, where the display area AA may be provided with a light emitting device and a pixel circuit for driving the light emitting device to emit light, and the pixel circuit may include a thin film transistor, a capacitor, and the like. As described in the background art, the characteristics of devices in the display panel inevitably have differences due to factors such as the manufacturing process of the display panel, for example, the threshold voltages of the thin film transistors in the pixel circuits in the display region may have differences due to factors such as the manufacturing process of the display panel, which may cause the display luminance of the display panel to be non-uniform, i.e., mura. In this step, the display area of the display panel is divided into at least one display sub-area, wherein when the display area AA is divided into one display sub-area, the display sub-area is the entire display area. Fig. 2 exemplarily shows a case where the display area AA of the display screen is divided into three display sub-areas, which are a first display sub-area AA1, a second display sub-area AA2, and a third display sub-area AA3, respectively. Referring to fig. 2, the display panel may further include a data line 100 extending along the first direction y, the data line 100 being electrically connected to a driving chip 200, wherein the driving chip 200 may be disposed inside the display panel or outside the display panel (included in the display device), which is not limited herein, and fig. 2 schematically illustrates a case where the display panel includes the driving chip 200 and the driving chip 200 is disposed in the non-display area NAA of the display panel. The display sub-regions are divided according to the distance between the sub-pixels 300 and the driving chip 200 along the extending direction of the data lines 100 in fig. 2, however, the division of the display sub-regions may also have other division forms, for example, the division is performed along the second direction x perpendicular to the first direction y, and the boundary distance between the sub-pixels and the display panel, and the invention is not limited in this respect.
optionally, the setting display frame may be a display frame of a display panel at a certain gray scale, for example, 16 gray scales, 32 gray scales, and the like, and this embodiment is not limited in detail herein. In addition, there may be one setting display screen or a plurality of setting display screens, and the embodiment of the present invention is not particularly limited herein. Optionally, the number of the setting display frames is at least two, for example, the setting display frame includes at least a 16-gray scale display frame and a 32-gray scale display frame.
As described above, the mura level of the display sub-area is determined by the ratio of the gray-level sum of the sub-pixels in the mura area to the gray-level sum of the sub-pixels in the display sub-area, so that the mura level of the display sub-area can be determined by calculating the ratio (i.e. mura ratio) of the gray-level sum of the sub-pixels in the mura area to the gray-level sum of the sub-pixels in the display sub-area. Specifically, the step 120 may include:
under the condition of setting a display picture, calculating the mura proportion of each display subarea by adopting the following formula:
exemplarily, taking the case that the display area shown in fig. 2 is divided into three display sub-areas as an example, the mura ratio of the first display sub-area AA1 is
I.e. equal to the sum of the gray values of the sub-pixels located in the mura area in the first display sub-area AA1 and the sum of the gray values of the sub-pixels in the first display sub-area. Similarly, the second display sub-area AA2 and the third display sub-area AA3 may also calculate the corresponding mura ratio according to the mura ratio calculation formula.
Determining the mura grade according to the mura proportion of the display sub-area;
optionally, the mura grades may be divided into light mura and heavy mura, and optionally, a mura proportion threshold for dividing the mura grades may be preset. Illustratively, the mura proportion threshold is 20%, and when the mura proportion corresponding to the display sub-area is less than or equal to 20%, the mura grade of the display sub-area is light mura; when the mura proportion corresponding to the display subarea is more than 20%, the mura grade of the display subarea is severe mura.
It should be noted that the mura levels are not limited to the above two levels, but may also be divided into more levels, the embodiment is not limited herein, and the mura ratio and the mura levels are not limited to the corresponding relationship illustrated above, and those skilled in the art may specifically set according to actual needs, and the embodiment is not specifically limited herein, but the overall principle that is followed is that the greater the mura ratio is, the more the corresponding mura level is, but different mura ratios within a certain range may correspond to the same mura level.
And determining the number of binding point gray scales according to the determined mura grade of each display subarea.
Specifically, after the mura levels in the display sub-regions are determined, the overall display effect of the display panel can be determined according to the mura levels in the display sub-regions. Illustratively, when the display area of the display panel is divided into three display sub-areas as shown in fig. 2, when all three display sub-areas are light mura, and when all three display sub-areas are light mura, it indicates that the overall display effect of the display panel is better. When two of the three display sub-regions are light mura and one is heavy mura, it indicates that the overall display effect of the display panel may be slightly poor. When two or more than two display subareas with heavy mura exist in the three display subareas, the overall display effect of the display panel is poor. After the whole display effect of display panel confirms, can confirm the tie point grey scale number according to display panel's whole display effect, it is specific, when display panel's whole display effect is worse, can set for more tie point grey scale number to guarantee mura compensation effect. For example, when all three display subregions are light mura, the number of binding point gray scales can be set to be 2; when two display subregions in the three display subregions are both mild mura and one display subregion is severe mura, the number of binding point gray scales can be set to be 4; when two or more display sub-areas with heavy mura exist in the three display sub-areas, the number of the binding gray scales can be set to be 6.
And step 130, carrying out mura compensation on the display panel according to the determined binding point gray scale number.
Specifically, when mura compensation is performed, a display picture under a binding point gray scale needs to be shot through a camera, the display panel is debugged under the binding point gray scale, the binding point gray scale number of the display panel is set through the mura grade of each display sub-region, and the mura compensation can be performed by setting different binding point gray scale numbers for different display panels. Optionally, the number of the binding point gray scales of the display panel with the lighter integral mura grade can be reduced, overcompensation of the display panel with the better display effect is avoided, mura compensation time is shortened, mura compensation efficiency is improved, and production line capacity is improved. And can make the number of tie point grey scale to the heavier display panel of whole mura grade can suitably increase, and then avoid the undercompensation to the display panel that the display effect is relatively poor, and then can carry out abundant mura compensation to the display panel that the display effect is relatively poor, guarantee that the display panel can have good display effect behind the mura compensation. Compare with the display panel of same producer same model in prior art, all carry out the method of grey scale compensation under fixed grey scale number, the mura compensation method of this embodiment can be directed against different display panels, confirms the whole mura degree of display panel according to the mura grade of display sub-region to set up different tie point grey scale numbers according to the whole mura degree of display panel and carry out the mura compensation, not only be favorable to mura compensation efficiency, still be favorable to improving mura compensation effect.
Optionally, before the step 110, the method includes:
Specifically, the Demura device includes a camera, and the camera may collect a display screen of the display panel, and specifically may collect brightness of each sub-pixel of the display panel. When the Demura device identifies the mura area and the non-mura area of the display area, any existing identification method in the prior art, such as a detection method of image feature extraction and the like, may be adopted, and the embodiment of the present invention is not specifically limited herein.
According to the mura compensation method provided by the embodiment, the number of the binding point gray scales is determined according to the mura grade of each display sub-area under the set display picture, and the mura compensation is performed on the display panel according to the determined number of the binding point gray scales, so that the mura compensation can be performed by setting different numbers of the binding point gray scales for different display panels. Less that can set up to the tie point grey scale number of the display panel that whole mura grade is lighter avoids the overcompensation to the better display panel of display effect, and then shortens mura compensation time, improves mura compensation efficiency, improves and produces the line productivity. And can make the number of tie point grey scale to the heavier display panel of whole mura grade can suitably increase, and then avoid the undercompensation to the display panel that the display effect is relatively poor, and then can carry out abundant mura compensation to the display panel that the display effect is relatively poor, guarantee that the display panel can have good display effect behind the mura compensation. Compared with the method in the prior art, the mura compensation method of the embodiment can determine the whole mura degree of the display panel according to the mura grade of the display sub-region aiming at different display panels, and set different binding point gray scale numbers according to the whole mura degree of the display panel to perform mura compensation, so that the mura compensation efficiency is facilitated, and the mura compensation effect is improved.
Fig. 3 is a flowchart of another mura compensation method according to an embodiment of the present invention, and referring to fig. 3, the mura compensation method includes:
Specifically, referring to fig. 2, the data line 100 is used for transmitting the data signal output by the driving chip 200 to each sub-pixel 300, and the data line 100 generally has impedance, so that there inevitably exists a voltage drop on the data line 100, so that when the driving chip 200 outputs the same data voltage, the data voltages received by the sub-pixels having different distances from the driving chip 200 along the extending direction of the data line 100 are different in magnitude, resulting in different display luminances of the sub-pixels having different distances from the driving chip 200 along the extending direction of the data line 100. In addition, the display panel further includes a power line (not shown), the extending direction of the power line is the same as the extending direction of the data line 100, a voltage drop also exists on the power line, and the power source providing the power voltage to the power line is closer to the driving chip 200, which further causes different display luminances of the sub-pixels with different distances from the driving chip 200 along the extending direction of the data line 100. Therefore, if the mura ratio is calculated for the same display sub-area by using the area farther from the driving chip 200 and the area closer to the driving chip 200 in the extending direction of the data line 100, and the mura level is determined, the calculated mura ratio is large, and the obtained mura level does not have a reference value.
However, the luminance difference is generally small for the sub-pixels 300 that are closer in distance along the extending direction of the data line 100, and therefore in this step, the display area of the display panel is divided into at least two display sub-areas according to the distance between the sub-pixels 300 and the driving chip 200 along the extending direction of the data lines 100, so that when the driving chip 200 outputs the same data voltage, the brightness difference of the sub-pixels in the same display sub-area is usually smaller, and then calculating the mura proportion of the display sub-area with smaller brightness difference in the subsequent steps, and determining the mura grade according to the calculated mura proportion, the influence of the transmission voltage drop on the data line 100 and the power line on the display effect can be eliminated, and the mura proportion in each display sub-area is ensured to be almost irrelevant to the transmission voltage drop of the data line 100 and the power line, so that the accuracy of the mura proportion in each display sub-area is ensured.
Optionally, the step 210 may include:
and dividing the display area of the display panel into three display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extension direction of the data line.
Specifically, the display area of the display panel is divided into three sub-areas, so that the association between the mura proportion in each display sub-area and the transmission voltage drop of the data line 100 and the power line is small, the calculated amount is small when the mura proportion of each display sub-area is calculated, and the compensation efficiency of the mura compensation method is further improved.
And step 220, determining the number of binding point gray scales according to the number of the display sub-areas with the mura levels reaching the preset levels.
Specifically, the content of step 120 in the previous embodiment may be referred to for the mura level determination mode, and details are not repeated herein. Alternatively, the preset level may be preset. After the mura levels of the display sub-areas are determined, the number of the display sub-areas with the mura levels reaching the preset levels can be determined according to the relation between the mura levels and the preset levels. For example, when the preset level is the severe mura, the number of the binding point gray scales is determined according to the number of the display sub-areas reaching the severe mura.
Optionally, the number of the binding point gray scales is positively correlated with the number of the display sub-regions where the mura level reaches the preset level. For example, when the display area of the display panel is divided into three display sub-areas as shown in fig. 2, when the mura level of the non-display sub-area reaches the preset level, the number of the tie point gray scales may be set to be the first number; when the mura grade of one display sub-area reaches a preset grade, the number of the binding point gray scales can be set to be a second number; when the mura levels of the two display sub-areas reach a preset level, the number of the binding point gray scales can be set to be a third number; when the mura levels of the three display sub-regions reach the preset level, the number of the binding point gray scales can be set to be a fourth number. Wherein the first number is less than the second number, the second number is less than the third number, and the third number is less than the fourth number. The more the number of the display sub-regions with the mura levels reaching the preset levels is, the worse the overall display effect of the display panel is, the positive correlation between the number of the binding point gray scales and the number of the display sub-regions with the mura levels reaching the preset levels is realized, the more the number of the display sub-regions with the preset levels is, the more the number of the binding point gray scales is, and the more the display panel with the worse overall display effect can be compensated under the gray scales with more quantities, so that the mura compensation effect is improved. Meanwhile, the smaller the number of the display sub-regions with the mura levels reaching the preset levels is, the better the overall display effect of the display panel is, the positive correlation between the number of the binding point gray scales and the number of the display sub-regions with the mura levels reaching the preset levels is, the smaller the number of the display sub-regions with the preset levels is (namely, the better the overall display effect of the display panel is), the smaller the number of the binding point gray scales is, and therefore the display panel with the worse overall display effect can be compensated under the gray scales with less quantity, and the mura compensation efficiency is improved.
And step 230, performing mura compensation on the display panel according to the determined number of the binding point gray scales. The step 230 is the same as the step 130 in the above embodiment, and is not described herein again.
Fig. 4 is a flowchart of another mura compensation method according to an embodiment of the present invention, and referring to fig. 4, the mura compensation method includes:
fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 5 illustrates a case where the entire display area AA is used as one display sub-area AA 1. The whole display area AA is used as the display sub-area AA1, so that in the subsequent calculation process, only the mura proportion of one display sub-area needs to be calculated, and the calculation amount is further reduced.
specifically, the whole display area of the display panel is used as one display sub-area, the mura grade of the whole display area is determined according to the mura proportion of the display sub-area, and the number of the binding gray scales is determined according to the mura grade in the whole display area. Illustratively, the mura levels may be divided into light mura and heavy mura, and for example, when the mura proportion corresponding to the entire display area is less than or equal to 20%, and the mura level of the entire display area is light mura, the number of the less non-binding point gray scales, for example, two, may be set; when the mura ratio corresponding to the display area is greater than 20%, the mura level of the display area is severe mura, and more binding point gray scales, for example, 6 binding point gray scales, can be set.
An embodiment of the present invention further provides a mura compensation apparatus, which may be used to perform the mura compensation method provided in any of the above embodiments of the present invention, fig. 6 is a schematic structural diagram of the mura compensation apparatus provided in the embodiment of the present invention, and referring to fig. 6, the mura compensation apparatus includes:
a sub-region dividing module 410, configured to divide a display region of the display panel into at least one display sub-region;
a binding point gray scale number determining module 420, configured to determine the number of binding point gray scales according to the mura levels of the display sub-regions in the set display image, where the mura levels are determined by ratios of gray scale values of the sub-pixels located in the mura regions in the display sub-regions to gray scale values of the sub-pixels in the display sub-regions;
and the compensation module 430 is used for performing mura compensation on the display panel according to the determined number of the binding point gray scales.
The mura compensation device provided by the embodiment of the invention can execute the method applied to the mura compensation provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
The embodiment of the present invention further provides a display panel, which can perform mura compensation by using the mura compensation method provided in any of the above embodiments of the present invention, wherein a schematic structural diagram of the display panel can refer to fig. 2 or fig. 5. Because the display panel adopts the mura compensation method provided by any of the above embodiments of the invention to perform the mura compensation, the display panel can have a better mura compensation effect.
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 for mura compensation of a display panel, comprising:
dividing a display area of the display panel into at least one display sub-area;
determining the number of binding point gray scales according to the mura levels of all the display sub-areas under a set display picture, wherein the mura levels of the display sub-areas are determined by the ratio of the gray value sum of the sub-pixels positioned in the mura areas in the display sub-areas to the gray value sum of all the sub-pixels in the display sub-areas; the number of the binding point gray scales is positively correlated with the number of the display sub-regions with the mura levels reaching the preset levels;
and performing mura compensation on the display panel according to the determined number of the binding point gray scales.
2. The mura compensation method of claim 1 wherein the dividing the display area of the display panel into at least one display sub-area comprises:
and dividing a display area of the display panel into at least two display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extension direction of the data line.
3. The mura compensation method of claim 2, wherein the dividing the display area of the display panel into at least two display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extending direction of the data lines comprises:
and dividing a display area of the display panel into three display sub-areas according to the distance between the sub-pixels and the driving chip in the display panel along the extension direction of the data line.
4. The mura compensation method according to claim 2 or 3, wherein the determining the number of the binding point gray scales according to the mura levels in the display sub-area under the set display screen comprises:
and determining the number of the binding point gray scales according to the number of the display sub-areas with the mura levels reaching the preset levels.
5. The mura compensation method of claim 1, wherein determining the number of binding point grays according to the mura levels in each of the display sub-regions of a set display screen comprises:
under the condition of setting a display picture, calculating the mura proportion of each display subarea by adopting the following formula:
determining the mura grade according to the mura proportion of the display sub-area;
and determining the number of binding point gray scales according to the determined mura grade of each display subarea.
6. The mura compensation method of claim 1 wherein the dividing the display area of the display panel into at least one display sub-area comprises:
taking the whole display area of the display panel as a display sub-area;
the method for determining the number of binding point gray scales according to the mura levels in each display sub-area in the set display picture comprises the following steps:
and determining the number of binding point gray scales according to the mura levels in the whole display area in the set display picture.
7. The mura compensation method of claim 1, prior to said dividing the display area of the display panel into at least one display sub-area, comprising:
and acquiring and setting the brightness of each sub-pixel under a display picture by adopting a camera, and identifying a mura area and a non-mura area of the display area by adopting a Demura device.
8. A mura compensating apparatus, comprising:
the display device comprises a sub-region dividing module, a display module and a display module, wherein the sub-region dividing module is used for dividing a display region of a display panel into at least one display sub-region;
the binding point gray scale number determining module is used for determining the number of the binding point gray scales according to the mura levels of all the display sub-areas under the set display picture, wherein the mura levels are determined by the ratio of the gray scale value sum of the sub-pixels positioned in the mura areas in the display sub-areas to the gray scale value sum of all the sub-pixels in the display sub-areas; the number of the binding point gray scales is positively correlated with the number of the display sub-regions with the mura levels reaching the preset levels;
and the compensation module is used for carrying out mura compensation on the display panel according to the determined number of the binding point gray scales.
9. A display panel characterized by mura compensation using the mura compensation method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449376.6A CN111583863B (en) | 2020-05-25 | 2020-05-25 | Mura compensation method and device and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449376.6A CN111583863B (en) | 2020-05-25 | 2020-05-25 | Mura compensation method and device and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111583863A CN111583863A (en) | 2020-08-25 |
| CN111583863B true CN111583863B (en) | 2021-08-27 |
Family
ID=72112667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010449376.6A Active CN111583863B (en) | 2020-05-25 | 2020-05-25 | Mura compensation method and device and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111583863B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017611B (en) * | 2020-09-10 | 2021-06-01 | Tcl华星光电技术有限公司 | Debugging method and device for display panel |
| CN115731860B (en) * | 2022-11-14 | 2025-08-29 | 合肥维信诺科技有限公司 | Mura compensation method, device, equipment and storage medium for display panel |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8026927B2 (en) * | 2007-03-29 | 2011-09-27 | Sharp Laboratories Of America, Inc. | Reduction of mura effects |
| CN101315745B (en) * | 2007-05-28 | 2012-11-28 | 统宝光电股份有限公司 | Image Display System and Its Elimination Method of Moiré Defects |
| TW200923873A (en) * | 2007-11-26 | 2009-06-01 | Tpo Displays Corp | Image displaying system and method of elimitating mura defect |
| US8610654B2 (en) * | 2008-07-18 | 2013-12-17 | Sharp Laboratories Of America, Inc. | Correction of visible mura distortions in displays using filtered mura reduction and backlight control |
| TWI428878B (en) * | 2010-06-14 | 2014-03-01 | Au Optronics Corp | Display driving method and display |
| US8988471B2 (en) * | 2012-06-08 | 2015-03-24 | Apple Inc. | Systems and methods for dynamic dwelling time for tuning display to reduce or eliminate mura artifact |
| CN105741762B (en) * | 2016-03-31 | 2018-01-30 | 深圳市华星光电技术有限公司 | The method for eliminating OLED display panel Mura |
| CN107680526A (en) * | 2017-10-13 | 2018-02-09 | 深圳吉迪思电子科技有限公司 | A kind of brightness Mura compensation methodes |
| CN108877740B (en) * | 2018-07-25 | 2020-09-22 | 昆山国显光电有限公司 | Method and device for acquiring Mura compensation data, computer equipment and storage medium |
| CN108877630B (en) * | 2018-07-25 | 2021-09-14 | 昆山国显光电有限公司 | Method and device for acquiring Mura compensation data, computer equipment and storage medium |
| CN109840901B (en) * | 2019-01-09 | 2020-08-25 | 武汉精立电子技术有限公司 | Quick judgment method for split screen Mura |
-
2020
- 2020-05-25 CN CN202010449376.6A patent/CN111583863B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111583863A (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112767867B (en) | Display panel and brightness compensation method and device thereof | |
| US20220335876A1 (en) | Method, device and apparatus for brightness compensation of display panel | |
| US10839729B2 (en) | Apparatus for testing display panel and driving method thereof | |
| CN109979402B (en) | Display apparatus | |
| CN107872662B (en) | Display device | |
| CN110301000B (en) | Method for compensating for uneven brightness of display device and corresponding display device | |
| CN114283728A (en) | Compensation method and device of display panel and computer readable storage medium | |
| US9837011B2 (en) | Optical compensation system for performing smear compensation of a display device and optical compensation method thereof | |
| CN111583863B (en) | Mura compensation method and device and display panel | |
| CN114141213A (en) | Compensation method and compensation device for display panel, display panel and display device | |
| CN110459162B (en) | Brightness compensation data acquisition method, device and equipment | |
| CN110706637B (en) | Display panel brightness compensation method, compensation device and display device | |
| CN114582284A (en) | Display driving method, display driver and display device | |
| CN114241997B (en) | Brightness compensation method of display panel and related device | |
| US11972731B2 (en) | Display panel and method for adjusting brightness thereof, and display apparatus | |
| CN116013209B (en) | Backlight area adjusting method and device, electronic equipment and storage medium | |
| CN106409232A (en) | Compensation voltage determination method and device, compensation method and system, and driving chip | |
| KR20160046606A (en) | Apparatus for compensating image data of display device | |
| CN114694618A (en) | Brightness adjusting method and device for display panel | |
| CN115565488B (en) | Brightness compensation method and device, and computer-readable storage medium | |
| CN117079590A (en) | Method, device, equipment and storage medium for compensating brightness of display panel | |
| CN110189727B (en) | Driving method and driving device of display panel and display device | |
| CN115620671A (en) | Display compensation method, display driver chip, display device | |
| US11741865B2 (en) | Apparatus for testing display device and display device for performing mura compensation and mura compensation method | |
| US20250014496A1 (en) | Driving method, driving device, display device and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |