CN111968572A - Method and device for determining mura compensation data of display module - Google Patents
Method and device for determining mura compensation data of display module Download PDFInfo
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- CN111968572A CN111968572A CN202010844736.2A CN202010844736A CN111968572A CN 111968572 A CN111968572 A CN 111968572A CN 202010844736 A CN202010844736 A CN 202010844736A CN 111968572 A CN111968572 A CN 111968572A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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]
- G09G3/3275—Details of drivers for data electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
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Abstract
The embodiment of the invention discloses a method and a device for determining mura compensation data of a display module, wherein display data corresponding to a set display picture under a preset binding point gray scale are led into a driving chip of the display module, so that the driving chip drives the display module to display a picture to be compensated according to the display data, the display data comprise first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data correspond to the first preset gray scale, and the second gray scale data correspond to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale. The mura compensation data determined by the technical scheme of the invention is beneficial to improving the mura compensation effect, and further improving the display effect.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a method and a device for determining mura compensation data of a display module.
Background
With the development of display technology, the requirements of people on display quality are higher and higher.
The characteristics of devices in the display module are inevitably different due to factors such as the manufacturing process and the technology of the organic light-emitting display module, so that the display brightness of the display module is uneven, namely mura. The current solution to the mura problem is the mura compensation, however to the display module assembly including the grooving design, the mura compensation effect is relatively poor.
Disclosure of Invention
The invention provides a display module mura compensation data determining method, which aims to improve the mura compensation effect of a display module comprising a grooving design.
In a first aspect, an embodiment of the present invention provides a method for determining mura compensation data of a display module, where the display module includes a first display area and a second display area; the display module further comprises scanning lines, and the number of sub-pixels connected with each scanning line in the first display area is smaller than that of sub-pixels connected with each scanning line in the second display area;
the display module mura compensation data determining method comprises the following steps:
importing display data corresponding to a set display picture under a preset binding point gray scale to a drive chip of a display module so that the drive chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, wherein the display data comprises first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale;
and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale.
Optionally, the scan lines extend along the first direction, and each scan line is connected to a row of sub-pixels;
the display module further comprises a groove digging area, the first display area is located on two sides of the groove digging area along the first direction, and scanning lines connected with the same row of sub-pixels located on two sides of the groove digging area in the first display area bypass the groove digging area;
along a second direction, the second display area is positioned on at least one side of the first display area and the groove digging area, and the second direction is vertical to the first direction.
Optionally, before the display data corresponding to the display image is imported into the driver chip of the display module, so that the driver chip drives the display module to display the image to be compensated according to the display data, the method further includes:
setting display data through a computer to simulate a set display picture in the computer, wherein the computer is connected with a driving chip, and the simulated set display picture comprises a first sub-picture for simulating a first display area corresponding to the first display area, a second sub-picture for simulating a second display area corresponding to the second display area and a third sub-picture for simulating a groove digging area corresponding to the groove digging area;
the display data also comprises third gray scale data corresponding to each sub-pixel under a third sub-picture in the simulated groove area, and the third gray scale data corresponds to the first preset gray scale;
wherein the picture formed by the first sub-picture and the second sub-picture is the same as the picture to be compensated.
Optionally, before the display data corresponding to the display image is imported into the driver chip of the display module, so that the driver chip drives the display module to display the image to be compensated according to the display data, the method further includes:
setting a setting display picture of a display module in a computer through computer setting display data, wherein the computer is connected with a driving chip, and the setting display picture comprises a first sub-picture for simulating a first display area corresponding to the first display area, a second sub-picture for simulating the first display area corresponding to the second display area and a third sub-picture for simulating a groove digging area corresponding to the groove digging area; wherein, the picture formed by the first sub-picture and the second sub-picture is the same as the picture to be compensated;
the display data does not include third gray scale data corresponding to a third sub-picture, and the third sub-picture is a black picture.
Optionally, the display module is in the shape of a rounded rectangle, the simulated set display picture is in the shape of an external rectangle of the rounded rectangle, and the simulated set display picture further comprises a fourth sub-picture corresponding to the external rectangle and a connecting area of the rounded rectangle;
the display data further comprises fourth gray scale data corresponding to the connecting area, wherein the connecting area comprises a first sub-connecting area simulating the position between the first display area and the edge of the external rectangle and a second sub-connecting area simulating the position between the second display area and the edge of the external rectangle, the fourth gray scale data corresponding to the sub-pixels in the first sub-connecting area corresponds to a first preset gray scale, and the fourth gray scale data corresponding to the sub-pixels in the second sub-connecting area corresponds to a preset binding point gray scale;
or the display data does not include fourth gray scale data corresponding to a fourth sub-picture, and the fourth sub-picture is a black picture.
Optionally, the range from the set gray scale threshold to the maximum gray scale includes a first gray scale range and a second gray scale range;
wherein the maximum gray scale in the first gray scale range is less than or equal to the minimum gray scale in the second gray scale range;
when the preset binding gray scale is in the first gray scale range, the difference value between the preset binding gray scale and the first preset gray scale is smaller than the difference value between the preset binding gray scale and the first preset gray scale when the preset binding gray scale is in the second gray scale range;
preferably, in the range from the set gray level threshold to the maximum gray level, the difference value between the preset binding gray level and the first preset gray level is smaller than or equal to the set difference threshold.
Optionally, when the preset binding point gray scale is smaller than the set gray scale threshold, the first preset gray scale is equal to the preset binding point gray scale.
Optionally, the first display area includes a first pixel circuit corresponding to a sub-pixel in the first display area, the first pixel circuit includes a first storage capacitor, the second display area includes a second pixel circuit corresponding to a sub-pixel in the second display area, the second pixel circuit includes a second storage capacitor, and a capacitance value of the first storage capacitor is greater than a capacitance value of the second storage capacitor.
Optionally, the display module further includes a transition region between the first display region and the second display region, and the area of the transition region is smaller than that of the first display region; in the second direction, the edge of the groove digging area close to the second display area is flush with the edge of the transition area close to the second display area;
the transition area comprises a first sub-pixel and a second sub-pixel which are arranged at intervals, the display data further comprises fifth gray scale data corresponding to the first sub-pixel and sixth gray scale data corresponding to the second sub-pixel in the transition area, the fifth gray scale data corresponds to a first preset gray scale, the sixth gray scale data corresponds to a preset binding point gray scale, and the first sub-pixel and the second sub-pixel are arranged at intervals.
In a second aspect, an embodiment of the present invention further provides a display module mura compensation data determining apparatus, where the display module includes a first display area and a second display area; the display module further comprises scanning lines, and the number of sub-pixels connected with each scanning line in the first display area is smaller than that of sub-pixels connected with each scanning line in the second display area;
the display module mura compensation data determining apparatus includes:
the device comprises an importing module, a display module and a control module, wherein the importing module is used for importing display data corresponding to a set display picture under a preset binding point gray scale to a driving chip of the display module so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, the display data comprises first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; the preset binding point gray scale is equal to the preset binding point gray scale;
and the determining module is used for determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale.
According to the method and the device for determining mura compensation data of the display module, display data corresponding to a set display picture under a preset binding point gray scale are led into a driving chip of the display module, so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, wherein the display data comprise first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data correspond to the first preset gray scale, and the second gray scale data correspond to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale. Under the picture to be compensated, the first preset gray scale is smaller than the preset binding point gray scale, so that the difference between the actual brightness and the target brightness of the sub-pixels in the first display area is larger than the difference between the actual brightness and the target brightness of the sub-pixels in the second display area, and therefore the absolute value of the compensation data corresponding to the sub-pixels in the first display area is larger than the absolute value of the compensation data corresponding to the sub-pixels in the second display area. And then when mura compensation is carried out according to the obtained compensation data, the higher-depth compensation can be carried out on the sub-pixels in the first display area, so that after the mura compensation, the brightness of the sub-pixels in the first display area and the brightness of the sub-pixels in the second display area are close to the same under the preset gray scale, the mura compensation effect is favorably improved, and the display effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for determining mura compensation data of a display module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display module according to an embodiment of the present invention;
FIG. 4 is a flowchart of another method for determining mura compensation data of a display module according to an embodiment of the present invention;
FIG. 5 is a diagram of a simulated setup display according to an embodiment of the present invention;
FIG. 6 is a flowchart of another method for determining mura compensation data of a display module according to an embodiment of the present invention;
FIG. 7 is a diagram of a simulated setup display according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 9 is a diagram of another exemplary setting display screen;
FIG. 10 is a diagram of another exemplary setting display screen;
fig. 11 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display module mura compensation data determining 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 mura compensation effect of the conventional mura compensation method for the display module including the notch design is poor, and the inventor researches and discovers that the above problems occur in the conventional display module including the notch design, because pixels in the notch area are cut off, the number of sub-pixels in each row in the extending direction of the scanning lines is reduced, and because each scanning line is connected with one row of sub-pixels, the number of sub-pixels connected with the scanning line in the pixel row of the notch area is less than that of sub-pixels connected with the scanning line in the main display area (i.e., the display area without the notch area in the extending direction of the scanning lines), and the larger the number of sub-pixels connected with the scanning line is, the larger the load on the scanning line is. Therefore, the load of the scanning line connected to the pixel row of the groove region (hereinafter, the scanning line connected to the pixel row of the groove region is referred to as the first scanning line) is less than the load of the scanning line connected to the pixel row of the main display region (hereinafter, the scanning line connected to the pixel row of the main display region is referred to as the second scanning line), so that the delay of the scanning pulse signal transmitted by the first scanning line relative to the scanning pulse signal transmitted by the second scanning line is smaller, the writing time of the sub-pixel gray scale data is related to the delay degree of the scanning pulse signal, the writing time of the gray scale data is longer as the scanning pulse signal delay is smaller, the writing of the gray scale data is more sufficient, the writing of the sub-pixel gray scale data at both sides of the groove region relative to the sub-pixel gray scale data of the main display region is more sufficient, and the displayed brightness is different when the sub-pixels at both sides of the groove region and the sub-pixels of the main display region correspond to the same gray scale, for example, for a display module manufactured by the conventional LTPS process, a driving transistor in a pixel circuit corresponding to a sub-pixel is usually a P-type transistor, and the more sufficient data is written, the darker the brightness is; especially when displaying high gray scale picture, the difference of brightness between the sub-pixel at two sides of the groove area and the sub-pixel in the main display area is more obvious. When the mura compensation data of the display module is determined, the problem that the loads of pixel rows of a scanning line connected with a pixel row of a groove area and a pixel row of a main display area are different is not considered, the same gray scale data are provided for sub-pixels in the display module, and the compensation data are determined based on a to-be-compensated display picture of the same gray scale data, so that the mura compensation effect of the display module according to the determined compensation data is poor, and the display effect is poor.
Based on the above problem, an embodiment of the present invention provides a method for determining mura compensation data of a display module, where the method for determining mura compensation data of a display module can be performed by a device for determining mura compensation data of a display module according to any embodiment of the present invention, and the device for determining mura compensation data of a display module can be included in existing demura equipment. Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention, and referring to fig. 1, the display module includes a first display area AA1 and a second display area AA 2; the display module further comprises scan lines 100, and the number of the sub-pixels 200 connected with each scan line 100 in the first display area AA1 is smaller than the number of the sub-pixels 200 connected with each scan line 100 in the second display area AA 2;
fig. 2 is a flowchart of a method for determining mura compensation data of a display module according to an embodiment of the present invention, where the method is applicable to determining mura compensation data of a to-be-compensated frame of the display module at any gray level, and referring to fig. 2, the method for determining mura compensation data of the display module includes:
The preset binding point gray scale can be any gray scale within a gray scale range from a minimum gray scale to a maximum gray scale. When the mura compensation data of the display module is determined, for example, when the minimum gray scale is 0 gray scale and the maximum gray scale is 255 gray scale, the preset binding gray scales are respectively set as 0 gray scale, 1 gray scale and 2 gray scale … … 255 gray scale, that is, the method of the embodiment is applied to determine the mura compensation data at each gray scale.
Optionally, the picture to be compensated is included in the setting display picture, where the picture to be compensated may be the same as the setting display picture, or may be a part of the setting display picture. Correspondingly, the display data corresponding to the picture to be compensated may be the display data corresponding to the set display picture, or the display data corresponding to the picture to be compensated may be a part of the display data corresponding to the set display picture.
Specifically, as described in the above embodiments, when the number of the sub-pixels 200 connected to the scan line 100 is different, the load on the scan line 100 is different, and therefore, the time for writing the gray-scale data into the sub-pixels 200 is different. Therefore, in the prior art, when the mura compensation data is determined based on the to-be-compensated picture with the same gray scale data corresponding to all the sub-pixels 200 in the display module, the display effect after the mura compensation is performed on the display module according to the determined compensation data is poor. In this step, the display data corresponding to the display frame set under the preset binding point gray scale includes first gray scale data corresponding to the first preset gray scale of the sub-pixel 200 in the first display area AA1 and second gray scale data corresponding to the preset binding point gray scale of the sub-pixel 200 in the second display area AA 2. Alternatively, the gray scale data may be a data voltage, or may be a gamma register value corresponding to the data voltage. When the preset binding point gray scale is greater than or equal to the set gray scale threshold, the first preset gray scale is smaller than the second preset gray scale, that is, the gray scale corresponding to the sub-pixel 200 in the first display area AA1 is smaller than the gray scale corresponding to the sub-pixel 200 in the second display area AA2 under the picture to be compensated, and correspondingly, the display brightness corresponding to the sub-pixel 200 in the first display area AA1 is smaller than the display brightness corresponding to the second sub-pixel 200.
And 120, determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale.
Specifically, when the preset tie point gray scale is greater than the preset gray scale threshold, the first gray scale data corresponding to the sub-pixel 200 in the first display area AA1 in the display data is different from the second gray scale data corresponding to the sub-pixel 200 in the second display area AA2, the first preset gray scale corresponding to the first gray scale data is smaller than the second preset gray scale corresponding to the second gray scale data, that is, the display gray scales of the sub-pixel 200 in the first display area AA1 and the sub-pixel 200 in the second display area AA2 in the to-be-compensated image are different, correspondingly, the luminance of the sub-pixel 200 in the first display area AA1 in the to-be-compensated image is different from the luminance of the sub-pixel 200 in the second display area AA2 in the to-be-compensated image, and specifically, the luminance of the sub-pixel 200 in the first display area AA1 in the to-be-compensated image corresponding to the preset tie point gray scale is smaller than the luminance of the sub-pixel 200 in the second sub-pixel 200. When the compensation data is determined, a camera of the Demura device is generally required to shoot a picture to be compensated, and the compensation data is determined according to the shot actual brightness of each sub-pixel 200 and the target brightness of the sub-pixel 200 at the preset binding point gray scale, so that the larger the difference between the actual brightness and the target brightness is, the larger the absolute value of the compensation data is. In this embodiment, since the first predetermined gray scale is smaller than the predetermined tie point gray scale under the to-be-compensated image, the difference between the actual brightness and the target brightness of the sub-pixels 200 in the first display area AA1 is larger than the difference between the actual brightness and the target brightness of the sub-pixels 200 in the second display area AA2, and therefore, the absolute value of the compensation data corresponding to the sub-pixels 200 in the first display area AA1 is larger than the absolute value of the compensation data corresponding to the sub-pixels 200 in the second display area AA 2. Then, when mura compensation is performed according to the obtained compensation data, compensation with a higher depth can be performed on the sub-pixels 200 in the first display area AA1, so that after the mura compensation, the brightness of the sub-pixels 200 in the first display area AA1 and the brightness of the sub-pixels 200 in the second display area AA2 can be approximately consistent under a preset gray scale, and therefore, the mura compensation effect can be improved, and the display effect can be improved.
On the basis of the foregoing technical solution, fig. 3 is a schematic structural diagram of another display module according to an embodiment of the present invention, and the method for determining mura compensation data of a display module according to any embodiment of the present invention is also applicable to the display module shown in fig. 3, where, referring to fig. 3, optionally, the scan lines 100 extend along the first direction x, and each scan line 100 is connected to a row of sub-pixels 200;
the display module further comprises a slotting region NAA, along the first direction x, the first display regions AA1 are positioned at two sides of the slotting region NAA, and the scanning lines 100 connected with the same row of sub-pixels 200 positioned at two sides of the slotting region NAA in the first display regions AA1 bypass the slotting region NAA;
the second display area AA2 is positioned at least one side of the first display area AA1 and the trenched area NAA along a second direction y perpendicular to the first direction x.
As described in the analysis of the cause of the problems in the related art in the embodiment of the present invention, in the high gray scale range, the luminance difference between the sub-pixels 200 at both sides of the recessed area NAA and the sub-pixels 200 in the main display area is more obvious. Therefore, the gray level threshold can be set reasonably according to the actual display condition, for example, through a large number of tests on the display module, when the gray level exceeds 64 gray levels, the luminance difference between the sub-pixels 200 at the two sides of the slotted area NAA and the sub-pixels 200 in the main display area is obvious, and the set gray level threshold can take the value of 64 gray levels. In addition, in order to improve the mura compensation effect under each gray scale, the set gray scale threshold may also be set to be 1 gray scale, so that the sub-pixels 200 in the first display area AA1 may be compensated more deeply under all gray scales except 0 gray scale, thereby further improving the mura compensation effect.
In the mura compensation data determining method for the display module, display data corresponding to a set display picture under a preset binding point gray scale is imported into a driving chip of the display module, so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, wherein the display data includes first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale. Under the picture to be compensated, the first preset gray scale is smaller than the preset binding point gray scale, so that the difference between the actual brightness and the target brightness of the sub-pixels in the first display area is larger than the difference between the actual brightness and the target brightness of the sub-pixels in the second display area, and therefore the absolute value of the compensation data corresponding to the sub-pixels in the first display area is larger than the absolute value of the compensation data corresponding to the sub-pixels in the second display area. And then when mura compensation is carried out according to the obtained compensation data, the higher-depth compensation can be carried out on the sub-pixels in the first display area, so that after the mura compensation, the brightness of the sub-pixels in the first display area and the brightness of the sub-pixels in the second display area are close to the same under the preset gray scale, the mura compensation effect is favorably improved, and the display effect is improved.
Fig. 4 is a flowchart of another method for determining mura compensation data of a display module according to an embodiment of the present invention, and referring to fig. 4, optionally, the method for determining mura compensation data of a display module includes:
In particular, the computer may be part of a demura apparatus. The computer can be installed with software for simulating the display picture of the display module, and the display data is set in the software to adjust the simulation display picture in the software. The drive chip of the display module can be connected with a computer, and further, display data set in the computer can be led into the drive chip of the display module. Specifically, a display image can be simulated and set in the computer, and display data corresponding to the simulated and set display image is imported into the driving chip, wherein the display data corresponds to the set display image of the display module. Fig. 5 is a schematic view of a simulated setting display screen according to an embodiment of the invention, and referring to fig. 5, the simulated setting display screen includes a first sub-screen simulating a first display area AA11 corresponding to a first display area AA1, a second sub-screen simulating a second display area AA21 corresponding to a second display area AA2, and a third sub-screen simulating a trenching area NAA1 corresponding to a trenching area NAA; the display data further includes third grayscale data corresponding to each sub-pixel 200 under a third sub-picture in the analog trenching area NAA1, where the third grayscale data corresponds to a first predetermined grayscale, that is, the third grayscale data corresponds to the same grayscale as the first grayscale data.
It should be noted that, due to the display module of this embodiment, the sub-pixels 200 in the trenched area NAA are excavated, that is, the sub-pixels 200 are not disposed in the trenched area NAA, and accordingly, the trenched area NAA cannot display the image. However, the setting display screen may be a display screen when the sub-pixel 200 is assumed to exist in the slotted-groove area NAA, and when the setting display screen is simulated in the computer, the third grayscale data corresponding to the sub-pixel 200 in the simulated slotted-groove area NAA1 is imported from the computer of the demura device, so that the display data corresponding to the setting display screen of the display module includes the third grayscale data corresponding to the slotted-groove area NAA. However, since the sub-pixels 200 of the trenched area NAA are excavated, even if the display data includes the third grayscale data corresponding to the trenched area NAA, the trenched area NAA cannot display the image, and only the first display area AA1 and the second display area AA2 display the image, and the image of the first display area AA1 and the image of the second display area AA2 constitute the image to be compensated.
Fig. 6 is a flowchart of another method for determining mura compensation data of a display module according to an embodiment of the present invention, where the method for determining mura compensation data of a display module may be implemented in parallel with the method for determining mura compensation data shown in fig. 4 as a parallel implementation manner of the present invention, and with reference to fig. 6, optionally, the method for determining mura compensation data of a display module includes:
310, setting a display picture of a simulation display module in a computer through computer setting display data, wherein the computer is connected with a driving chip, and the simulated setting display picture comprises a first sub-picture for simulating a first display area corresponding to the first display area, a second sub-picture for simulating the first display area corresponding to the second display area and a third sub-picture for simulating a groove digging area corresponding to the groove digging area; the picture formed by the first sub-picture and the second sub-picture is the same as the picture to be compensated; the display data does not include third gray scale data corresponding to a third sub-picture, and the third sub-picture is a black picture.
In particular, the computer may be part of a demura apparatus. The computer can be installed with software for simulating the display picture of the display module, and the display data is set in the software to adjust the simulation display picture in the software. The drive chip of the display module can be connected with a computer, and further, display data set in the computer can be led into the drive chip of the display module. Specifically, a display image can be simulated and set in the computer, and display data corresponding to the simulated and set display image is imported into the driving chip, wherein the display data corresponds to the set display image of the display module. Fig. 7 is a schematic view of a simulated setting display screen according to an embodiment of the invention, and referring to fig. 7, the simulated setting display screen includes a first sub-screen simulating a first display area AA11 corresponding to a first display area AA1, a second sub-screen simulating a second display area AA21 corresponding to a second display area AA2, and a third sub-screen simulating a trenching area NAA1 corresponding to a trenching area NAA; the third sub-picture is a black picture, and the display data does not include third gray scale data corresponding to the third sub-picture.
Due to the display module of this embodiment, the sub-pixels 200 of the trenched area NAA are excavated, that is, the sub-pixels 200 are not disposed in the trenched area NAA, and accordingly, the trenched area NAA cannot display the image. When a display picture is set in a simulation mode in a computer, a model corresponding to the display module can be set, namely, the simulation slotted hole area NAA1 is set to be not provided with the sub-pixel 200, correspondingly, a third sub-picture corresponding to the simulation slotted hole area NAA1 is a black picture, and display data does not include third gray scale data corresponding to the third sub-picture, namely, the display data does not include gray scale data corresponding to the slotted hole area NAA, and correspondingly, the display data led into the driving chip does not include gray scale data corresponding to the slotted hole area NAA, so that the simulation set display picture is closer to a to-be-compensated display picture of an actual display module, and the display module mura compensation data can be more favorably and accurately determined.
Fig. 8 is a schematic structural diagram of a display module according to an embodiment of the present invention, referring to fig. 8, optionally, the display module is a rounded rectangle, fig. 9 is a schematic diagram of another simulated setting display screen according to an embodiment of the present invention, referring to fig. 9, optionally, the simulated setting display screen is a circumscribed rectangle of the rounded rectangle, and the simulated setting display screen further includes a fourth sub-screen corresponding to a connection region of the circumscribed rectangle and the rounded rectangle;
the display data further includes fourth gray scale data corresponding to a connection region, where the connection region includes a first sub-connection region 11 simulating between the first display region AA11 and the edge of the external rectangle and a second sub-connection region 12 simulating between the second display region AA21 and the edge of the external rectangle, where the fourth gray scale data corresponding to the sub-pixel 200 in the first sub-connection region 11 corresponds to a first preset gray scale, and the fourth gray scale data corresponding to the sub-pixel 200 in the second sub-connection region 12 corresponds to a preset tie point gray scale.
Specifically, the setting display frame may be that the display module includes a connection area, the connection area includes the sub-pixel 200, the analog setting display frame is an external rectangle of the rounded rectangle display module, and accordingly, the display data includes fourth gray scale data corresponding to the connection area, and the fourth gray scale data corresponding to the sub-pixel 200 in the first connection area corresponds to a first preset gray scale, that is, the gray scale corresponding to the sub-pixel 200 in the first connection area is the same as the gray scale corresponding to the sub-pixel 200 in the first display area AA 1. However, since the actual display module does not include the link area, even if the display data includes the fourth gray scale data corresponding to the link area, the fourth gray scale data does not have the corresponding sub-pixel 200 in the display module, and thus the picture of the first display area AA1 and the picture of the second display area AA2 still form the picture to be compensated.
Fig. 10 is a schematic view of another analog setting display frame according to an embodiment of the present invention, and referring to fig. 10, optionally, the display data does not include fourth grayscale data corresponding to a fourth sub-frame, and the fourth sub-frame is a black frame.
The display module of the present embodiment does not include the connection area shown in the analog display screen. When a display picture is set in a simulated mode in a computer, a model corresponding to the display module can be set, namely a fourth sub-picture corresponding to the connecting area is a black picture, fourth gray scale data corresponding to the fourth sub-picture are not included in display data, namely the gray scale data corresponding to the first sub-connecting area 11 and the second sub-connecting area 12 are not included in the display data, correspondingly, the display data led into the driving chip do not include the gray scale data corresponding to the connecting area, so that the display picture set in the simulated mode is closer to a display picture to be compensated of an actual display module, and further, the mura compensation data of the display module can be determined accurately.
On the basis of the technical scheme, optionally, the range from the set gray scale threshold value to the maximum gray scale comprises a first gray scale range and a second gray scale range;
wherein the maximum gray scale in the first gray scale range is less than or equal to the minimum gray scale in the second gray scale range;
the difference value between the preset binding gray scale and the first preset gray scale when the preset binding gray scale is within the first gray scale range is smaller than the difference value between the preset binding gray scale and the first preset gray scale when the preset binding gray scale is within the second gray scale range.
As described in the analysis of the reasons for the problems in the background art in the embodiment of the present invention, in the high gray scale range, the luminance difference between the sub-pixels on both sides of the trench area and the sub-pixels in the main display area is more obvious, because the load difference between the scan line connecting the sub-pixels in the first display area and the scan line connecting the sub-pixels in the second display area is greater than the load difference between the sub-pixels in the low gray scale display area when the high gray scale display is performed, the gray scale of the sub-pixels in the first display area corresponding to the picture to be compensated can be set according to the gray scale of the preset tie point. Optionally, when the preset tie point gray scale is greater than or equal to the preset gray scale threshold, the larger the preset tie point gray scale is, the larger the absolute value of the difference between the first preset gray scale and the preset tie point gray scale in the first display area can be set, and further, when high gray scale display is performed, the larger the absolute value of mura compensation data corresponding to the sub-pixels in the first display area is obtained, and further, when compensation is performed according to the obtained mura compensation data, compensation with higher depth can be performed on the sub-pixels in the first display area, and then the brightness of the sub-pixels in the first display area and the brightness of the sub-pixels in the second display area after mura compensation are closer to the same.
For example, the gray level threshold is set to 64 gray levels, the first gray level range is 64-128 gray levels, and the second gray level range is 129-255 gray levels, optionally, when the preset binding point gray level is in the first gray level range, the difference between the preset binding point gray level and the first preset gray level is a1, and when the preset binding point gray level is in the second gray level range, the difference between the preset binding point gray level and the first preset gray level is a2, a1< a2, for example, a1 is 1, and a2 is 3.
Optionally, in a range from the set gray scale threshold to the maximum gray scale, a difference between the preset binding gray scale and the first preset gray scale is smaller than or equal to the set difference threshold.
Specifically, in the display module mura compensation data determining method of this embodiment, when the preset tie point gray scale is greater than the set gray scale threshold, for the picture to be compensated corresponding to the preset tie point gray scale, although the first preset gray scale corresponding to the first display sub-pixel is smaller than the preset tie point gray scale, the difference between the preset tie point gray scale and the first preset gray scale should not be too large, otherwise, when the mura compensation data according to this embodiment is subjected to mura compensation, the sub-pixel in the first display area is overcompensated, so that the mura compensation effect is still poor. Therefore, in this embodiment, the difference between the preset tie point gray scale and the first preset gray scale is set to be less than or equal to the set difference threshold, which is beneficial to avoiding overcompensation of the sub-pixels in the first display area.
On the basis of the technical scheme, optionally, when the preset binding point gray scale is smaller than the set gray scale threshold, the first preset gray scale is equal to the preset binding point gray scale. Because the brightness difference between the sub-pixels in the first display area and the sub-pixels in the second display area is not large under the low gray scale, when the preset tie point gray scale is smaller than the set gray scale threshold value, the better mura effect can be ensured according to the compensation data determined by the display picture to be compensated, wherein the first preset gray scale is equal to the preset tie point gray scale.
Optionally, the first display area includes a first pixel circuit corresponding to a sub-pixel in the first display area, the first pixel circuit includes a first storage capacitor, the second display area includes a second pixel circuit corresponding to a sub-pixel in the second display area, the second pixel circuit includes a second storage capacitor, and a capacitance value of the first storage capacitor is greater than a capacitance value of the second storage capacitor.
Specifically, the capacitance value of the storage capacitor in the pixel circuit directly affects the data writing speed, and therefore in this embodiment, the capacitance value of the first storage capacitor is set to be greater than that of the second storage capacitor, and further the data writing speed of the sub-pixels in the first display area is slowed down, so that the data writing speeds of the sub-pixels in the first display area and the second display area AA2 are closer, and further the consistency of the brightness of the sub-pixels in the first display area and the brightness of the sub-pixels in the second display area are better ensured, and the display effect is improved.
Fig. 11 is a schematic structural diagram of another display module according to an embodiment of the invention, further including a transition region 21 between the first display region AA1 and the second display region AA2, where an area of the transition region 21 is smaller than an area of the first display region AA 1; in the second direction y, the edge of the slotted area NAA near the second display area AA2 is flush with the edge of the transition area 21 near the second display area AA 2;
the transition area 21 includes first sub-pixels 200 and second sub-pixels 200 arranged at intervals, the display data further includes fifth gray scale data corresponding to the first sub-pixels 200 in the transition area 21 and sixth gray scale data corresponding to the second sub-pixels 200, the fifth gray scale data corresponds to a first preset gray scale, the sixth gray scale data corresponds to a preset binding point gray scale, and the first sub-pixels and the second sub-pixels are arranged at intervals.
Optionally, the first sub-pixel and the second sub-pixel are located in the same row, or the first sub-pixel and the second sub-pixel are located in the same column, where the row direction of the sub-pixels may be a first direction x, and the column direction of the sub-pixels may be a second direction y. Specifically, through experimental research of the inventor, it is found that crosstalk easily occurs at a boundary between the first display area AA1 and the second display area AA2, so that transition between the first display area AA1 and the second display area AA2 is unnatural, and a screen separation phenomenon between the second display area AA2 and the second display area AA2 occurs. In this embodiment, by setting the transition area 21 between the first display area AA1 and the second display area AA2, and setting the display data corresponding to the display frame, wherein the first sub-pixel and the second sub-pixel which are set at an interval correspond to different gray scale data, the first sub-pixel corresponds to a first preset gray scale, and the second sub-pixel corresponds to a second preset gray scale, after mura compensation, the luminance of the transition area 21 is between the luminances of the first display area AA1 and the second display area AA2, so that the transition between the first display area AA1 and the second display area AA1 is more natural, and the split screen phenomenon of the first display area AA1 and the second display area AA2 is reduced.
For the display panel shown in fig. 11, the display frames of the first display area AA1, the second display area AA2 and the transition area 21 constitute a display frame to be compensated.
The embodiment of the invention also provides a device for determining the mura compensation data of the display module, wherein the display module comprises a first display area and a second display area; the display module further comprises scanning lines, and the number of sub-pixels connected with each scanning line in the first display area is smaller than that of sub-pixels connected with each scanning line in the second display area;
fig. 12 is a schematic structural diagram of a display module mura compensation data determining apparatus according to an embodiment of the present invention, and referring to fig. 12, the display module mura compensation data determining apparatus includes:
the importing module 410 is configured to import display data corresponding to a set display picture under a preset binding point gray scale to a driving chip of the display module, so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, where the display data includes first gray scale data corresponding to a sub-pixel in a first display area and second gray scale data corresponding to a sub-pixel in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; the preset binding point gray scale is equal to the preset binding point gray scale;
the determining module 420 is configured to determine compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset tie point gray scale according to the to-be-compensated picture corresponding to the preset tie point gray scale.
The mura compensation data determining device for the display module according to the embodiment introduces display data corresponding to a set display picture under a preset binding point gray scale to a driving chip of the display module through an introduction module, so that the driving chip drives the display module to display a to-be-compensated picture corresponding to the preset binding point gray scale according to the display data, wherein the display data includes first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to the set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale. Under the picture to be compensated, the first preset gray scale is smaller than the preset binding point gray scale, so that the difference between the actual brightness and the target brightness of the sub-pixels in the first display area is larger than the difference between the actual brightness and the target brightness of the sub-pixels in the second display area, and therefore the absolute value of the compensation data corresponding to the sub-pixels in the first display area is larger than the absolute value of the compensation data corresponding to the sub-pixels in the second display area. And then when mura compensation is carried out according to the obtained compensation data, the higher-depth compensation can be carried out on the sub-pixels in the first display area, so that after the mura compensation, the brightness of the sub-pixels in the first display area and the brightness of the sub-pixels in the second display area are close to the same under the preset gray scale, the mura compensation effect is favorably improved, and the display effect is improved.
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 (10)
1. A method for determining mura compensation data of a display module is characterized in that the display module comprises a first display area and a second display area; the display module further comprises scanning lines, and the number of sub-pixels connected with each scanning line in the first display area is smaller than that of sub-pixels connected with each scanning line in the second display area;
the display module mura compensation data determining method comprises the following steps:
importing display data corresponding to a set display picture under a preset binding point gray scale to a driving chip of the display module so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, wherein the display data comprise first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data correspond to the first preset gray scale, and the second gray scale data correspond to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to a set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale;
and determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale.
2. The method of claim 1, wherein said scan lines extend in a first direction, each of said scan lines connecting a row of said sub-pixels;
the display module further comprises a groove digging area, the first display areas are located on two sides of the groove digging area along a first direction, and the scanning lines connected with the same row of sub-pixels located on two sides of the groove digging area in the first display areas bypass the groove digging area;
the second display area is located on at least one side of the first display area and the groove digging area along a second direction, and the second direction is perpendicular to the first direction.
3. The method of claim 2, wherein the display module mura compensation data is determined,
before the display data corresponding to the display picture is imported into the driving chip of the display module to enable the driving chip to drive the display module to display the picture to be compensated according to the display data, the method further comprises:
setting the display data by a computer to simulate the set display picture in the computer, wherein the computer is connected with the driving chip, and the simulated set display picture comprises a first sub-picture simulating a first display area corresponding to the first display area, a second sub-picture simulating a second display area corresponding to the second display area and a third sub-picture simulating a groove digging area corresponding to the groove digging area;
the display data also comprises third gray scale data corresponding to each sub-pixel under a third sub-picture in the analog trenching area, and the third gray scale data corresponds to a first preset gray scale;
and the picture formed by the first sub-picture and the second sub-picture is the same as the picture to be compensated.
4. The method of claim 2, wherein the display module mura compensation data is determined,
before the display data corresponding to the display picture is imported into the driving chip of the display module to enable the driving chip to drive the display module to display the picture to be compensated according to the display data, the method further comprises:
setting a setting display picture of the display data in a computer to simulate a display module by the computer, wherein the computer is connected with the driving chip, and the simulated setting display picture comprises a first sub-picture simulating a first display area corresponding to the first display area, a second sub-picture simulating the first display area corresponding to the second display area and a third sub-picture simulating a groove digging area corresponding to the groove digging area; the picture formed by the first sub-picture and the second sub-picture is the same as the picture to be compensated;
and the display data does not comprise third gray scale data corresponding to the third sub-picture, and the third sub-picture is a black picture.
5. The method as claimed in claim 3 or 4, wherein the shape of the display module is a rounded rectangle, the shape of the simulated set display screen is a circumscribed rectangle of the rounded rectangle, and the simulated set display screen further includes a fourth sub-screen corresponding to a connecting region of the circumscribed rectangle and the rounded rectangle;
the display data further comprises fourth gray scale data corresponding to the connecting area, wherein the connecting area comprises a first sub-connecting area between the simulated first display area and the edge of the external rectangle and a second sub-connecting area between the simulated second display area and the edge of the external rectangle, the fourth gray scale data corresponding to sub-pixels in the first sub-connecting area corresponds to a first preset gray scale, and the fourth gray scale data corresponding to sub-pixels in the second sub-connecting area corresponds to a preset binding point gray scale;
or the display data does not include fourth gray scale data corresponding to the fourth sub-picture, and the fourth sub-picture is a black picture.
6. The method as claimed in claim 1, wherein the range from the set gray level threshold to the maximum gray level includes a first gray level range and a second gray level range;
wherein the maximum gray scale in the first gray scale range is less than or equal to the minimum gray scale in the second gray scale range;
when the preset binding point gray scale is within the first gray scale range, the difference value between the preset binding point gray scale and the first preset gray scale is smaller than the difference value between the preset binding point gray scale and the first preset gray scale when the preset binding point gray scale is within the second gray scale range;
preferably, in a range from a set gray scale threshold to a maximum gray scale, a difference value between the preset tie point gray scale and the first preset gray scale is smaller than or equal to a set difference threshold.
7. The method as claimed in claim 1, wherein the first predetermined gray level is equal to the predetermined binding point gray level when the predetermined binding point gray level is less than the predetermined gray level threshold.
8. The method as claimed in claim 7, wherein the first display area includes a first pixel circuit corresponding to a sub-pixel in the first display area, the first pixel circuit includes a first storage capacitor, the second display area includes a second pixel circuit corresponding to a sub-pixel in the second display area, the second pixel circuit includes a second storage capacitor, and wherein a capacitance of the first storage capacitor is greater than a capacitance of the second storage capacitor.
9. The method for determining the mura compensation data of the display module as claimed in claim 2, further comprising a transition area between the first display area and the second display area, wherein the area of the transition area is smaller than the area of the first display area; in the second direction, the edge of the groove area close to the second display area is flush with the edge of the transition area close to the second display area;
wherein, the transition region includes first subpixel and the second subpixel that the interval set up, display data still includes in the transition region fifth grayscale data that first subpixel corresponds with the sixth grayscale data that the second subpixel corresponds, fifth grayscale data corresponds first predetermined grey scale, sixth grayscale data corresponds predetermined binding point grey scale, first subpixel with the second subpixel interval sets up.
10. The mura compensation data determining device for the display module is characterized in that the display module comprises a first display area and a second display area; the display module further comprises scanning lines, and the number of sub-pixels connected with each scanning line in the first display area is smaller than that of sub-pixels connected with each scanning line in the second display area;
the display module mura compensation data determining apparatus includes:
the device comprises an importing module, a display module and a control module, wherein the importing module is used for importing display data corresponding to a set display picture under a preset binding point gray scale to a driving chip of the display module so that the driving chip drives the display module to display a picture to be compensated corresponding to the preset binding point gray scale according to the display data, the display data comprises first gray scale data corresponding to sub-pixels in a first display area and second gray scale data corresponding to sub-pixels in a second display area, the first gray scale data corresponds to the first preset gray scale, and the second gray scale data corresponds to the preset binding point gray scale; when the preset binding point gray scale is greater than or equal to a set gray scale threshold value, the first preset gray scale is smaller than the preset binding point gray scale; the preset binding point gray scale is equal to the preset binding point gray scale;
and the determining module is used for determining compensation data corresponding to the sub-pixels in the first display area and the sub-pixels in the second display area under the preset binding point gray scale according to the picture to be compensated corresponding to the preset binding point gray scale.
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| WO2022126337A1 (en) * | 2020-12-14 | 2022-06-23 | 京东方科技集团股份有限公司 | Gamma correction method and apparatus, electronic device, and readable storage medium |
| WO2022222635A1 (en) * | 2021-04-19 | 2022-10-27 | Oppo广东移动通信有限公司 | Compensation method and apparatus for display module, electronic device, and readable storage medium |
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