Compensation method and compensation device of display panel, electronic equipment and storage medium

Abstract

The invention provides a compensation method and a compensation device of a display panel, electronic equipment and a storage medium, and relates to the technical field of display, the compensation method comprises the following steps: acquiring first display data of a first display area under first brightness and first gray scale, and performing first compensation on the first display area according to the first display data, the first display area meets a first preset condition after being compensated; acquiring second display data of the second display area under the second brightness and the second gray scale, and compensating the second display area for the first time according to the second display data; acquiring third display data of the first display area under third brightness and a third gray scale, and compensating the first display area for the second time according to the third display data, so that the first display area meets a second preset condition after being compensated; fourth display data of the second display area under the fourth brightness and the fourth gray scale are obtained, and second compensation is conducted on the second display area according to the fourth display data. Ink stains are improved, and the image quality of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a compensation method, a compensation device, an electronic device and a storage medium for a display panel. Background Art

[0002] In the related art, a full-screen display panel can set a sensor for collecting images, such as an under-screen camera (Full Display with Camera, FDC), under the screen, so that the display panel is divided into a first display area where the image sensor is located, and a second display area, i.e., a normal display area, which at least partially surrounds the first display area.

[0003] The first display area needs to take into account both the display effect and high transmittance of the screen, so the panel routing of the first display area is different from that of the second display area. For example, the first display area can lead the driving circuit to the second display area through a transparent electrode. However, this will make it more difficult for the pixels in the first display area to light up than the pixels in the second display area, especially at low brightness and low grayscale, the first display area will have obvious dark areas.

[0004] Currently, the image quality is improved by compensating the brightness uniformity of the display panel after compensating the first display area separately, such as using demura compensation to eliminate mura, which indicates uneven brightness, chromaticity, etc. However, after compensating the first display area at low brightness and low grayscale, different areas in the first display area have different display effects of redness, cyan, blackness or yellowness, which cannot meet the compensation requirements. As a result, the low brightness and low grayscale compensation data cannot be used when compensating for the uniformity of brightness and chromaticity, resulting in the display problem of "ink stains" after the display panel is compensated. Summary of the invention

[0005] The present application provides a compensation method, a compensation device, an electronic device and a storage medium for a display panel, which can solve the display problem that "ink stains" still exist after the display panel is compensated.

[0006] In a first aspect, the present application provides a compensation method for a display panel, the compensation method for a display panel comprising:

[0007] Acquire first display data of a first display area of ​​the display panel at a first brightness and a first grayscale, and perform a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after being compensated;

[0008] Acquire second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and perform a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area;

[0009] Acquire third display data of the first display area at a third brightness and a third grayscale, and perform a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after compensation;

[0010] Obtain fourth display data of the second display area at a fourth brightness and a fourth grayscale, and perform a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness, and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale, and the fourth grayscale are respectively smaller than the second grayscale.

[0011] Optionally, performing a first compensation on the first display area according to the first display data includes:

[0012] Acquire a first compensation parameter corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameter enables the first display area to meet the first preset condition after being illuminated at the first brightness and the first grayscale;

[0013] A first compensation file is generated according to the first compensation parameter; wherein the first compensation file is used when lighting up the first display area.

[0014] Optionally, the acquiring second display data of the second display area at a second brightness and a second grayscale includes:

[0015] When the display panel is illuminated based on the first compensation file, image capture is performed on a display screen of the second display area at the second brightness and the second grayscale, and image data obtained by the image capture is used as the second display data.

[0016] Optionally, the acquiring third display data of the first display area at a third brightness and a third grayscale includes:

[0017] When the display panel is illuminated based on the first compensation file and the second compensation file, performing image acquisition on a display picture of the first display area at the third brightness and the third grayscale, and using image data obtained by the image acquisition as the third display data;

[0018] The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data.

[0019] Optionally, performing a second compensation on the first display area according to the third display data includes:

[0020] According to the third display data and the second preset condition, obtaining a second compensation parameter corresponding to the first display area; wherein the second compensation parameter enables the first display area to meet the second preset condition after being illuminated at the third brightness and the third grayscale;

[0021] A third compensation file is generated according to the second compensation parameter; wherein the third compensation file is used when the first display area is lit.

[0022] Optionally, the acquiring fourth display data of the second display area at a fourth brightness and a fourth grayscale includes:

[0023] When the display panel is illuminated based on the third compensation file, image acquisition is performed on a display picture of the second display area at the fourth brightness and the fourth grayscale, and image data obtained by the image acquisition is used as the fourth display data.

[0024] Optionally, the display panel compensation method further includes:

[0025] storing a first compensation file, a second compensation file, and a fourth compensation file in a storage circuit corresponding to the display panel, so that a timing driving circuit of the display panel obtains the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights up the display panel according to the first compensation file, the second compensation file, and the fourth compensation file;

[0026] The fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the fourth display data.

[0027] In a second aspect, the present application provides a compensation device for a display panel, the compensation device for a display panel comprising:

[0028] a first compensation module, the first compensation module being used to obtain first display data of a first display area of ​​the display panel at a first brightness and a first grayscale, and to perform a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after being compensated;

[0029] a second compensation module, the second compensation module being used to obtain second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and to perform a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area;

[0030] a third compensation module, the third compensation module being used to obtain third display data of the first display area at a third brightness and a third grayscale, and to perform a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after being compensated;

[0031] A fourth compensation module, the fourth compensation module is used to obtain fourth display data of the second display area at a fourth brightness and a fourth grayscale, and perform a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale and the fourth grayscale are respectively smaller than the second grayscale.

[0032] Optionally, the first compensation module is specifically used to:

[0033] Acquire a first compensation parameter corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameter enables the first display area to meet the first preset condition after being illuminated at the first brightness and the first grayscale;

[0034] A first compensation file is generated according to the first compensation parameter; wherein the first compensation file is used when lighting up the first display area.

[0035] Optionally, the second compensation module is specifically used to:

[0036] When the display panel is illuminated based on the first compensation file, image capture is performed on a display screen of the second display area at the second brightness and the second grayscale, and image data obtained by the image capture is used as the second display data.

[0037] Optionally, the third compensation module is specifically used to:

[0038] When the display panel is illuminated based on the first compensation file and the second compensation file, performing image acquisition on a display picture of the first display area at the third brightness and the third grayscale, and using image data obtained by the image acquisition as the third display data;

[0039] The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data.

[0040] Optionally, the third compensation module is further configured to:

[0041] According to the third display data and the second preset condition, obtaining a second compensation parameter corresponding to the first display area; wherein the second compensation parameter enables the first display area to meet the second preset condition after being illuminated at the third brightness and the third grayscale;

[0042] A third compensation file is generated according to the second compensation parameter; wherein the third compensation file is used when the first display area is lit.

[0043] Optionally, the fourth compensation module is specifically used to:

[0044] When the display panel is illuminated based on the third compensation file, image acquisition is performed on a display picture of the second display area at the fourth brightness and the fourth grayscale, and image data obtained by the image acquisition is used as the fourth display data.

[0045] Optionally, the compensation device for the display panel further includes:

[0046] a storage module, storing a first compensation file, a second compensation file, and a fourth compensation file in a storage circuit corresponding to the display panel, so that a timing driving circuit of the display panel obtains the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights up the display panel according to the first compensation file, the second compensation file, and the fourth compensation file;

[0047] The fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the fourth display data.

[0048] In a third aspect, the present application provides an electronic device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store executable instructions, and the executable instructions enable the processor to execute the compensation method for the display panel as described in the first aspect.

[0049] In a fourth aspect, the present application provides a storage medium. When instructions in the storage medium are executed by a processor of an electronic device, the processor is enabled to execute the display panel compensation method as described in the first aspect.

[0050] The present application provides a compensation method, compensation device, electronic device and storage medium for a display panel, which have at least the following advantages: by means of multiple compensation, the second display area can obtain the compensation effect of the first display area for the case of less than the second brightness and the second grayscale before the second display area is compensated, whether it is at the second brightness and the second grayscale, or when it is lower than the second brightness and the second grayscale, and meet the preset conditions, thereby avoiding the display problem of inconsistent brightness and chromaticity after the first display area is compensated separately in the related art. Therefore, compensating the second display area based on the compensation effect of the first display area meeting the preset conditions can improve the "ink stain" display problem of the display panel and improve the image quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0052] Figure 1 It is a wiring diagram of a display panel using an under-screen camera in the related art;

[0053] Figure 2 This is a display effect diagram after the FDC area is compensated separately under high brightness in the related art;

[0054] Figure 3 This is a display effect diagram after the FDC area is compensated separately under low brightness in the related art;

[0055] Figure 4 is a schematic diagram of steps of a compensation method for a display panel provided in an embodiment of the present application;

[0056] Figure 5 It is a schematic diagram of an "ink stain" of a display panel in the related art;

[0057] Figure 6 is a flow chart of a compensation method for a display panel provided in an embodiment of the present application;

[0058] Figure 7 It is a schematic diagram of the structure of a compensation device for a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in some embodiments to clearly and completely describe the technical solutions in some embodiments. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] With the development of Active-Matrix Organic Light-Emitting Diode (AMOLED) technology, FDC technology has emerged to meet the growing needs of users. For display panels using FDC, the display effect of the FDC area is one of the important evaluation indicators. Figure 1 This is a wiring diagram of a display panel using an under-screen camera in the related art, such as Figure 1 As shown in FIG. 1 , the panel wiring in the FDC area only retains the electroluminescent (EL) device, the aperture ratio of the anode is reduced, and the backplane (BP) driving circuit in the FDC area is led out to the normal display (NOR) area through the indium tin oxide (ITO) wiring. Figure 1 As shown in the figure, the thin film transistor (TFT) is set in the NOR area. It is because the BP circuit is led out through the panel wiring that it is more difficult for the pixels in the FDC area to light up, especially when the brightness is low and the grayscale is low, the FDC area will have obvious dark areas, which greatly affects the display effect.

[0061] Figure 2 This is a display effect diagram after the FDC area is compensated separately under high brightness in the related art. For a display panel using FDC, the first display area, namely the FDC area, is divided into two types of areas, such as Figure 2 The middle area and the two side areas shown. After the middle area and the two side areas are compensated at high brightness, the display brightness and uniformity are more balanced. Figure 3 This is a display effect diagram after the FDC area is compensated separately under low brightness in the related art, such as Figure 3As shown, after the FDC area is compensated at low brightness, different areas have different display effects of red, blue, black, and yellow. This compensation effect is inconsistent with the trend of the compensation effect at high brightness. Therefore, at present, when the display panel is demura after the FDC area is compensated separately, there is a problem of inconsistent brightness and chromaticity after the FDC area is compensated at low brightness, and the low grayscale compensation data of medium-high brightness and low brightness is obtained by linear interpolation of the low brightness compensation data when taking pictures. Therefore, the compensation data of the FDC area at low brightness cannot be used during demura, otherwise the interpolated compensation data will cause abnormal display of the FDC area at medium-high brightness. In this way, the display problem of "ink stains" on the screen surface of the display panel at low brightness and low grayscale cannot be improved, resulting in poor display effect of the display panel.

[0062] Figure 4 is a schematic diagram of the steps of a compensation method for a display panel provided in an embodiment of the present application, such as Figure 4 As shown, the compensation method of the display panel includes:

[0063] Step S1, obtaining first display data of a first display area of ​​a display panel at a first brightness and a first grayscale, and performing a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after compensation;

[0064] Step S2, obtaining second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and performing a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area;

[0065] Step S3, obtaining third display data of the first display area at a third brightness and a third grayscale, and performing a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after compensation;

[0066] Step S4, obtaining fourth display data of the second display area at a fourth brightness and a fourth grayscale, and performing a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale and the fourth grayscale are respectively smaller than the second grayscale.

[0067] The compensation method provided in this embodiment can be applied to a display panel using an under-screen image sensor, such as an under-screen camera (FDC). The under-screen image sensor is arranged in the first display area of ​​the display panel, and the display area of ​​the display panel except the area where the under-screen image sensor is located can be called a normal display (NOR) area. In this embodiment, the normal display area is called the second display area of ​​the display panel, and the second display area at least partially surrounds the first display area. The compensation method provided in this embodiment improves the "ink stain" problem of the display panel by compensating the first display area and the second display area at different brightness and different grayscales in batches, thereby improving the display effect of the display panel.

[0068] In some embodiments, the second brightness is high brightness, and the second grayscale is high grayscale. Since the first brightness, the third brightness, and the fourth brightness are respectively less than the second brightness, the first brightness, the third brightness, and the fourth brightness can be low brightness. Since the first grayscale, the third grayscale, and the fourth grayscale are respectively less than the second grayscale, the first grayscale, the third grayscale, and the fourth grayscale can be low grayscale. Among them, at least two of the first brightness, the third brightness, and the fourth brightness can be equal, and at least two of the first grayscale, the third grayscale, and the fourth grayscale can also be equal, and the embodiments of the present application are not limited to this.

[0069] For example, high brightness generally refers to 1000-600 nits, and low brightness generally refers to 2-3.5 nits. The second brightness can take a brightness value in the range of 1000-600 nits, and the first brightness, the third brightness, and the fourth brightness can take a brightness value in the range of 2-3.5 nits respectively.

[0070] For example, high grayscale generally refers to grayscale 255, and low grayscale generally refers to grayscale 32 and below. The second grayscale may include one or more grayscale values ​​around grayscale 255, and the first grayscale, the third grayscale, and the fourth grayscale may respectively include one or more grayscale values ​​within the range of grayscale 32 and below.

[0071] In practical applications, the second brightness and the second grayscale can represent a basic high grayscale value used under a certain high brightness, and the first brightness and the first grayscale, the third brightness and the third grayscale, or the fourth brightness and the fourth grayscale can represent a basic low grayscale value used under a certain low brightness. This is only an example, and the embodiments of the present application are not limited to this.

[0072] In some embodiments, the display panel is first driven by a driving control circuit of the display panel to display an image at a first brightness and a first grayscale, that is, the display panel is lit at the first brightness and the first grayscale. The image displayed by the display panel at the first brightness and the first grayscale is a dark image, which can be a monochrome image, such as an image in which only red, green or blue sub-pixels are lit, or a mixed color image, such as an image in which at least two color sub-pixels are lit. For example, the display panel is lit at the lowest brightness and 135 grayscales, and the display panel is not compensated for. Figure 3 Taking the FDC area shown as an example, there is a situation where the middle area is green and the areas on both sides are dark.

[0073] In some embodiments, after the display panel is turned on at the first brightness and the first grayscale, an image of the display screen of the display panel at the first brightness and the first grayscale can be captured, for example, the display panel can be photographed by a charge coupled device (CCD) camera to obtain an image of the display screen. The captured image can be an image of the entire display panel or an image of the first display area. This is only an example, and the embodiments of the present application are not limited to this.

[0074] Specifically, if only the first display area is imaged, the image data obtained by the image acquisition can be directly used as the first display data. If the entire display panel is imaged, the screen data of the first display area can be extracted from the acquired image data as the first display data.

[0075] In some embodiments, the first display area is compensated for the first time so that the first display area satisfies the first preset condition at the first brightness and the first grayscale after compensation. The first preset condition is to characterize the display effect achieved after the first display area is compensated at the first brightness and the first grayscale. For example, the first preset condition is that after the first display area is compensated, at the first brightness and the first grayscale, the brightness values ​​of different sub-pixels of each pixel in the first display area are approximately equal, thereby avoiding the problem of inconsistent brightness and chromaticity after the first display area is compensated.

[0076] Alternatively, the first preset condition may also be that after the first display area is compensated, at the first brightness and the first grayscale, the display effects of the first display area and the second display area are consistent, for example, the visual colors of the first display area and the second display area are basically consistent. Specifically, the first preset condition may be that after the first display area is compensated, at the first brightness and the first grayscale of the display panel, the grayscale of the display image of the first display area and the display image of the second display area are consistent, and the color difference is less than a preset threshold, or the color difference is within a preset range.

[0077] For example, 135 grayscales are set, and the display panel is lit up at the lowest brightness and low grayscale to collect image data. After the first display area is compensated for the first time, the display effect at low brightness and low grayscale is consistent with that of the normal display area. For example Figure 3 The situation that the middle area of ​​the FDC region is green and the areas on both sides are dark is improved, achieving the ideal effect of the FDC region being black, so that the display panel presents a black display effect at the lowest brightness and low grayscale. This is only an example, and the embodiments of the present application are not limited to this.

[0078] In a specific embodiment, the first display area can be an FDC area, and the first compensation of the first display area can be performed by using FDC compensation. Specifically, the image data of the FDC area at the first brightness and the first grayscale can be obtained, and the actual brightness value of each sub-pixel in the first display area can be obtained according to the image data. If the actual brightness value of any sub-pixel is different from the ideal brightness value, the difference between the actual brightness value and the ideal brightness value can be used as the compensation value of the sub-pixel. When the first display area is lit up next time, the sub-pixel is driven to reach the ideal brightness value according to the compensation value, and the brightness value of the pixel can be controlled by the pixel driving circuit of the sub-pixel to reach the ideal brightness value. This is just an example, and the embodiments of the present application are not limited to this.

[0079] Optionally, step S1 may include the following sub-steps:

[0080] Sub-step A1, obtaining a first compensation parameter corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameter enables the first display area to meet the first preset condition after being illuminated at the first brightness and the first grayscale;

[0081] Sub-step A2, generating a first compensation file according to the first compensation parameter; wherein the first compensation file is used when lighting up the first display area.

[0082] In some embodiments, the first display data represents the actual display effect of the first display area at the first brightness and the first grayscale, and the first preset condition represents the display effect achieved by the first display area after compensation at the first brightness and the first grayscale. The first display area is compensated for the first time according to the first display data, that is, the first compensation parameter corresponding to the first display area is obtained by comparing the first display data with the first preset condition, and then the first compensation parameter is used to perform display compensation when the first display area is subsequently lit, so that the first display area achieves an ideal display effect after compensation.

[0083] Specifically, the compensation method provided in this embodiment can generate compensation files in batches, and then light up the display panel based on the compensation files. In addition, the compensation files can be stored in the storage circuit corresponding to the display panel. Each time the display panel is lit, the timing control circuit can obtain the compensation file from the storage circuit, and then perform display compensation on the display panel based on the compensation file, so that the compensation effect can be fixed. Among them, the compensation file can be a compensation BIN file, and the compensation BIN file is a binary file with the suffix ".BIN", and BIN represents an abbreviation of a file format BINary. Alternatively, the compensation file can be a data file recognizable by the drive control circuit, such as a long package code (CODE) recognizable by an integrated circuit (IC) IC, and the long package CODE includes a first compensation parameter. The data file is only used to light up the display panel, and unlike the compensation BIN file, it does not need to be burned into the storage circuit.

[0084] For example, the compensation BIN file can be burned into a flash memory (FLASH) connected to the display panel, and the timing controller (TCON) can read the compensation BIN file from the FLASH memory when the computer is powered on, and then drive the display panel to display the compensated image based on the compensation BIN file.

[0085] In some embodiments, the actual brightness value of each sub-pixel in the first display area can be obtained according to the first display data, and then the ideal brightness value of each sub-pixel in the first display area can be determined according to the first preset condition, and then the compensation value of the sub-pixel can be determined according to the ideal brightness value and the actual brightness value. For example, the brightness difference value can be directly used as the compensation value, and the first compensation parameter corresponding to the first display area includes the compensation value of each sub-pixel in the first display area. Then, the compensation value of each sub-pixel is converted into a compensation file that can be used to light up the first display area, that is, the first compensation file corresponding to the first compensation of the first display area is generated according to the first compensation parameter.

[0086] Wherein, if the first preset condition is different, the first compensation parameter obtained is different. If the first preset condition is that the brightness values ​​of different sub-pixels in the pixel of the first display area are approximately equal, then the compensation value of each sub-pixel can be determined according to the brightness difference between the sub-pixel and other pixels in the pixel to which it belongs, so that the brightness of different sub-pixels in a single pixel after compensation is approximately equal. This is only an example, and the embodiment of the present application does not limit this.

[0087] In some embodiments, a first compensation parameter corresponding to the first display area is obtained based on the first display data and the first preset condition. Due to the first compensation parameter, the first display area satisfies the first preset condition after being illuminated at the first brightness and the first grayscale. In this way, a first compensation file is generated based on the first compensation parameter, so that the first display area can be compensated using the first compensation file when the first display area is illuminated. The compensated first display area can meet the first preset condition at the first brightness and the first grayscale, achieving a preset display effect, thereby improving the display quality of the display panel.

[0088] Step S2 may include the following sub-steps:

[0089] Sub-step B1, when the display panel is illuminated based on the first compensation file, performing image acquisition on a display picture of the second display area at a second brightness and a second grayscale, and using image data acquired by the image acquisition as second display data.

[0090] In some embodiments, the first compensation file may be a data file recognizable by the drive control circuit of the display panel, the data file includes the first compensation parameter, and the first compensation file may be sent to the drive control circuit so that the drive control circuit drives the display panel to display the compensated picture. Alternatively, the first compensation file may also be a compensation BIN file stored in a storage circuit connected to the display panel, the compensation BIN file includes the first compensation parameter, the compensation BIN file is obtained from the storage circuit through the timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN file.

[0091] The display screen of the display panel is a screen at the second brightness and the second grayscale, and the display screen includes the display effect of the first display area after the first compensation, that is, the display panel is lit based on the first compensation file. The display screen at the second brightness and the second grayscale is a light-colored screen, and the light-colored screen can be a monochrome screen or a mixed-color screen, which is not limited in the embodiment of the present application.

[0092] In some embodiments, after the display panel is turned on at the second brightness and the second grayscale, an image of the display screen of the display panel at the second brightness and the second grayscale can be captured, for example, the display panel can be photographed by a CCD camera to obtain an image of the display screen. The captured image can be an image of the entire display panel or an image of the second display area. Specifically, if only the second display area is imaged, the image data obtained by the image capture can be directly used as the second display data. If the entire display panel is imaged, the screen data of the second display area can be extracted from the captured image data as the second display data.

[0093] In some embodiments, the second display area is compensated for the first time so that the second display area satisfies a third preset condition at the second brightness and the second grayscale after compensation. The third preset condition is a display effect achieved after the second display area is compensated at the second brightness and the second grayscale. For example, the third preset condition is that the mura phenomenon is eliminated at the second brightness and the second grayscale after the second display area is compensated, and the first compensation for the second display area is the first Demura compensation, which can improve the brightness uniformity of the second display area.

[0094] In some embodiments, the compensation parameters corresponding to the second display area can be obtained by comparing the second display data with the third preset condition, and the compensation parameters make the second display area meet the third preset condition after being illuminated at the second brightness and the second grayscale. Then, a second compensation file is generated according to the second compensation parameter. The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data, and the second compensation file is used when the second display area is illuminated. Among them, the second compensation file can be a compensation BIN file or a data file recognizable by the drive control circuit, and the embodiment of the present application does not limit this.

[0095] Specifically, the second display data characterizes the actual display effect of the second display area at the second brightness and the second grayscale, and the third preset condition characterizes the display effect achieved by the second display area after being compensated at the second brightness and the second grayscale. According to the second display data, the abnormal pixels corresponding to the mura phenomenon in the second display area at the second brightness and the second grayscale are determined, and then the brightness values ​​of the normal pixels that are normally displayed within a certain range around the abnormal pixels are obtained, and the brightness values ​​of the abnormal pixels and the normal pixels are uniformly processed, such as increasing or decreasing the grayscale value of the abnormal pixels, so that the abnormal pixels are visually uniform with the normal pixels when displayed. The compensation parameters of the second display area include the compensation values ​​corresponding to each abnormal pixel. Then, the compensation values ​​of the abnormal pixels are converted into a compensation file that can be used to light up the second display area to obtain a second compensation file.

[0096] Optionally, step S3 may include the following sub-steps:

[0097] Sub-step C1, when the display panel is illuminated based on the first compensation file and the second compensation file, performing image acquisition on a display picture of the first display area at a third brightness and a third grayscale, and using image data obtained by the image acquisition as third display data;

[0098] The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data.

[0099] In some embodiments, the first compensation file and the second compensation file may be data files recognizable by the drive control circuit of the display panel, and the first compensation file and the second compensation file may be sent to the drive control circuit so that the drive control circuit drives the display panel to display the compensated picture. Alternatively, the first compensation file and the second compensation file may also be compensation BIN files stored in a storage circuit connected to the display panel, and the compensation BIN files are obtained from the storage circuit through the timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN files.

[0100] The display screen of the display panel is a screen at a third brightness and a third grayscale, and the display screen includes a display effect of the first display area after the first compensation and a display effect of the second display area after the first compensation, that is, the display panel is lit based on the first compensation file and the second compensation file. The display screen at the third brightness and the third grayscale is a dark screen, and the dark screen can be a monochrome screen or a mixed color screen, which is not limited in the embodiment of the present application.

[0101] In some embodiments, after the display panel is turned on at the third brightness and the third grayscale, an image of the display screen of the display panel at the third brightness and the third grayscale can be captured, for example, the display panel can be photographed by a CCD camera to obtain an image of the display screen. The captured image can be an image of the entire display panel or an image of the first display area. Specifically, if only the first display area is imaged, the image data obtained by the image capture can be directly used as the third display data. If the entire display panel is imaged, the screen data of the first display area can be extracted from the captured image data as the third display data.

[0102] Optionally, step S3 may include the following sub-steps:

[0103] Sub-step C2, acquiring a second compensation parameter corresponding to the first display area according to the third display data and the second preset condition; wherein the second compensation parameter enables the first display area to meet the second preset condition after being illuminated at the third brightness and the third grayscale;

[0104] Sub-step C3, generating a third compensation file according to the second compensation parameter; wherein the third compensation file is used when lighting up the first display area.

[0105] In some embodiments, the third display data represents the actual display effect of the first display area at the third brightness and the third grayscale, and the second preset condition represents the display effect achieved after the first display area is compensated at the third brightness and the third grayscale. The first display area is compensated for a second time according to the third display data, that is, the second compensation parameter corresponding to the first display area is obtained by comparing the third display data and the second preset condition, and then the second compensation parameter is used to perform display compensation when the first display area is subsequently lit, so that the first display area achieves an ideal display effect after compensation. Among them, the second preset condition is that after the first display area is compensated, at the third brightness and the third grayscale, the brightness values ​​of different sub-pixels of each pixel in the first display area are approximately equal, thereby avoiding the problem of inconsistent brightness and chromaticity after the first display area is compensated.

[0106] Alternatively, the second preset condition may also be that after the first display area is compensated, at the third brightness and the third grayscale, the display effects of the first display area and the second display area remain consistent, for example, the visual colors of the first display area and the second display area are basically consistent, and the embodiments of the present application do not limit this. Specifically, the second preset condition may be that after the first display area is compensated, the display panel is at the third brightness and the third grayscale, the grayscale of the display picture of the first display area is consistent with the grayscale of the display picture of the second display area, and the color difference is less than the preset threshold, or the color difference is within the preset range. In addition, if the first brightness is equal to the third brightness and the first grayscale is equal to the third grayscale, the first preset condition and the second preset condition may be the same preset condition. This is only an example, and the embodiments of the present application do not limit this.

[0107] In some embodiments, the actual brightness value of each sub-pixel in the first display area can be obtained according to the third display data, and then the ideal brightness value of each sub-pixel in the first display area can be determined according to the second preset condition, and then the compensation value of the sub-pixel can be determined according to the ideal brightness value and the actual brightness value. For example, the brightness difference value can be directly used as the compensation value, and the second compensation parameter corresponding to the first display area includes the compensation value of each sub-pixel in the first display area. Then, the compensation value of each sub-pixel is converted into a compensation file that can be used to light up the first display area, that is, the third compensation file corresponding to the second compensation of the first display area is generated according to the second compensation parameter.

[0108] Wherein, if the second preset condition is different, the second compensation parameter obtained is different. If the second preset condition is that the brightness values ​​of different sub-pixels in the pixel of the first display area are approximately equal, then the compensation value of each sub-pixel can be determined according to the brightness difference between the sub-pixel and other pixels in the pixel to which it belongs, so that the brightness of different sub-pixels in a single pixel after compensation is approximately equal. This is only an example, and the embodiment of the present application does not limit this.

[0109] In some embodiments, the third compensation file may be a compensation BIN file, but the third compensation file may not be burned into the FLASH memory to enable, but the compensation BIN file is converted into a data file recognizable by the IC, such as a long package CODE, which is only used when the first display area is lit. That is, in this embodiment, the compensation file may also be a compensation BIN file generated first, and then the compensation BIN file is converted into a data file recognizable by the IC. This is only an example, and the embodiment of the present application does not limit this.

[0110] In some embodiments, a second compensation parameter corresponding to the first display area is obtained based on the third display data and the second preset condition. Due to the second compensation parameter, the first display area satisfies the second preset condition after being illuminated at a third brightness and a third grayscale. In this way, a third compensation file is generated based on the second compensation parameter, so that the first display area can be compensated using the third compensation file when the first display area is illuminated. The compensated first display area can meet the second preset condition at the third brightness and the third grayscale, achieving a preset display effect, thereby improving the display quality of the display panel.

[0111] Optionally, step S4 may include the following sub-steps:

[0112] Sub-step D1, when the display panel is illuminated based on the third compensation file, performing image acquisition on the display picture of the second display area at the fourth brightness and the fourth grayscale, and using the image data acquired by the image acquisition as the fourth display data.

[0113] In some embodiments, the third compensation file may be a data file recognizable by the drive control circuit of the display panel, the data file includes the second compensation parameter, and the third compensation file may be sent to the drive control circuit so that the drive control circuit drives the display panel to display the compensated picture. Alternatively, the third compensation file may also be a compensation BIN file stored in a storage circuit connected to the display panel, the compensation BIN file includes the second compensation parameter, the compensation BIN file is obtained from the storage circuit through the timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN file.

[0114] The display screen of the display panel is a screen at a fourth brightness and a fourth grayscale, and the display screen includes a display effect after the first display area is compensated for the second time, that is, the display panel is lit based on the third compensation file. The display screen at the fourth brightness and the fourth grayscale is a dark screen, and the dark screen can be a monochrome screen or a mixed color screen, which is not limited in the embodiment of the present application.

[0115] In some embodiments, after the display panel is turned on at the fourth brightness and the fourth grayscale, an image of the display screen of the display panel at the fourth brightness and the fourth grayscale can be captured, for example, the display panel can be photographed by a CCD camera to obtain an image of the display screen. The captured image can be an image of the entire display panel or an image of the second display area. Specifically, if only the second display area is imaged, the image data obtained by the image capture can be directly used as the fourth display data. If the entire display panel is imaged, the screen data of the second display area can be extracted from the captured image data as the fourth display data.

[0116] In some embodiments, the second display area is compensated for a second time so that the second display area satisfies a fourth preset condition at a fourth brightness and a fourth grayscale after compensation. The fourth preset condition is a display effect achieved after the second display area is compensated at a fourth brightness and a fourth grayscale. For example, if the fourth preset condition is that the mura phenomenon is eliminated at a fourth brightness and a fourth grayscale after the second display area is compensated, then the second compensation for the second display area is a second Demura compensation, which can improve the brightness uniformity of the second display area.

[0117] In some embodiments, the compensation parameters corresponding to the second display area can be obtained by comparing the fourth display data with the fourth preset condition, and the compensation parameters make the second display area meet the fourth preset condition after being illuminated at the fourth brightness and the fourth grayscale. Then, a fourth compensation file is generated according to the compensation parameters, and the fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the second display data, and the fourth compensation file is used when the second display area is illuminated. Among them, the fourth compensation file can be a compensation BIN file, or it can be a data file recognizable by the drive control circuit, and the embodiment of the present application does not limit this.

[0118] Specifically, the fourth display data characterizes the actual display effect of the second display area at the fourth brightness and the fourth grayscale, and the fourth preset condition characterizes the display effect achieved after the second display area is compensated at the fourth brightness and the fourth grayscale. According to the fourth display data, the abnormal pixels corresponding to the mura phenomenon in the second display area at the fourth brightness and the fourth grayscale are determined, and then the brightness values ​​of the normal pixels that are normally displayed within a certain range around the abnormal pixels are obtained, and the brightness values ​​of the abnormal pixels and the normal pixels are homogenized, such as calculating the brightness mean of multiple normal pixels, and then assigning the brightness mean to the abnormal pixels as the compensation value of the abnormal pixels. The compensation parameters of the second display area include the compensation values ​​corresponding to each abnormal pixel. Then, the compensation value of the abnormal pixel is converted into a compensation file that can be used to light up the second display area to obtain a fourth compensation file.

[0119] Optionally, the compensation method of the display panel further includes:

[0120] Step S5, storing the first compensation file, the second compensation file, and the fourth compensation file in a storage circuit corresponding to the display panel, so that the timing driving circuit of the display panel obtains the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights up the display panel according to the first compensation file, the second compensation file, and the fourth compensation file;

[0121] The fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the fourth display data.

[0122] In some embodiments, if the first compensation file and the second compensation file have been stored in the storage circuit before the second compensation is performed on the second display area, then after step 4, the step of storing the fourth compensation file in the storage circuit is performed. Otherwise, after the second compensation is performed on the second display area, the fourth compensation file is obtained, and the first compensation file, the second compensation file, and the fourth compensation file can be stored together in the storage circuit corresponding to the display panel.

[0123] Specifically, the compensation BIN files corresponding to the first compensation file, the second compensation file, and the fourth compensation file can be burned into the FLASH memory connected to the display panel, and the TCON can read the compensation BIN file from the FLASH memory when the computer is turned on, and then drive the display panel to display the compensated picture based on the compensation BIN file. In this way, the compensation effect can be fixed, so that each time the display panel is lit up, the TCON can compensate the display picture of the display panel at different brightness and different grayscales based on the compensation BIN file, thereby improving the picture of the display panel.

[0124] In some embodiments, the first brightness and the first grayscale may be low brightness and low grayscale, and the first compensation file is a compensation file under low brightness and low grayscale. For compensation files of medium brightness and low grayscale, and high brightness and low grayscale, they can be obtained by interpolating compensation files under low brightness and low grayscale. TCON can perform bilinear interpolation on the compensation values ​​read from the compensation BIN file, thereby restoring the compensation parameters to the compensation parameters of all pixels under high brightness and low grayscale. In this way, the best compensation parameters are obtained regardless of high, medium and low grayscales. Under medium and high brightness and low grayscale, the display effect of the first display area will not deviate from the final compensation effect due to excessive interpolation deviation. While the first display area can present the best display effect under medium and high brightness and low grayscale, the "ink stain" problem of the second display area with low brightness and low grayscale can also be greatly optimized.

[0125] Figure 5 It is a schematic diagram of "ink stains" on a display panel in the related art. Figure 5The display effect of the display panel at 3.5 nits and grayscale (Gary) 16 is shown. Due to the uneven brightness of the display panel, a display defect of "ink stains" is presented.

[0126] Figure 6 is a flow chart of a compensation method for a display panel provided in an embodiment of the present application, such as Figure 6 As shown, first, without any image quality compensation on the display panel, the FDC area of ​​the display panel is photographed for the first time, i.e., image acquisition, to obtain the first display data of the FDC area at low brightness and low grayscale, and then the first compensation parameter of the FDC area is generated to obtain the compensation BIN file BIN_F1, and the first under-screen camera (FDC) compensation is performed on the FDC area based on the BIN_F1 file. Secondly, with the first BIN_F1 compensation effect, the NOR area is photographed for the first time at high brightness and high grayscale, the second display data of the NOR area is obtained, and the first Demura compensation is performed to obtain the compensation BIN file BIN_D1 of the NOR area.

[0127] Then, the compensation BIN file BIN_F1 of the FDC area and the compensation BIN file BIN_D1 of the NOR area can be burned into the FLASH memory at the same time. Based on the BIN_F1 file and the BIN_D1 file, the display panel is lit, and the display screen of the FDC area at low brightness and low grayscale is photographed twice to obtain the first display data of the FDC area at low brightness and low grayscale, and then the second compensation parameter of the FDC area is generated to obtain the compensation BIN file BIN_F2, and the FDC area is compensated for the second time under the screen camera (FDC) based on the BIN_F2 file. The BIN_F2 file does not need to be burned into the FLASH memory to enable, but the BIN_F2 file is converted into a data file recognizable by the IC, such as a long package CODE, which is only used when the FDC area is lit. Next, the screen of the NOR area at low brightness and low grayscale is photographed twice, the fourth display data of the NOR area is obtained, and the second Demura compensation is performed, and the compensation BIN file BIN_D2 of the NOR area is obtained. At this time, due to the compensation effect of the BIN_F2 file, the display effect of the FDC area under low brightness and low grayscale is consistent with the display effect trend of the FDC area under high brightness and low grayscale, that is, the FDC area under high / low brightness can achieve an ideal compensation effect, so the low brightness data obtained by taking pictures can be reasonably applied. Finally, the BIN_F1 file, BIN_D1 file, and BIN_D2 file are burned into the FLASH memory connected to the display panel as the final compensation data of the FDC compensation and Demura compensation of the display panel.

[0128] In actual applications, without changing the display panel structure and other process conditions, after the compensation method provided in this embodiment is used to compensate the mass-produced display panel in batches, the first display area can achieve an ideal compensation effect at high / low brightness, and the brightness uniformity of the display panel is greatly improved, effectively solving the "ink stain" problem of the display panel at low brightness and low grayscale. The image quality of the display panel can be improved, and the product yield and market competitiveness can be improved.

[0129] In an embodiment of the present application, first display data of a first display area of ​​a display panel at a first brightness and a first grayscale is obtained, and the first display area is compensated for a first time according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after compensation; second display data of a second display area of ​​the display panel at a second brightness and a second grayscale is obtained, and the second display area is compensated for a first time according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area; third display data of the first display area at a third brightness and a third grayscale is obtained, and the first display area is compensated for a second time according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after compensation; fourth display data of the second display area at a fourth brightness and a fourth grayscale is obtained, and the second display area is compensated for a second time according to the fourth display data; wherein the first brightness, the third brightness, and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale, and the fourth grayscale are respectively smaller than the second grayscale.

[0130] In this way, when the brightness is lower than the second brightness and the second grayscale, the first display area can be compensated for the first time and the compensation effect corresponding to the first preset condition can be obtained. Secondly, when the first compensation effect of the first display area is obtained, the second display area under the second brightness and the second grayscale is compensated for the first time, so that the third display data used when the first display area is compensated for the second time includes the compensation effect of the first display area and the second display area for the first time. Thirdly, when the brightness is lower than the second brightness and the second grayscale, the second display area is compensated for the second time and the compensation effect corresponding to the second preset condition is obtained. Finally, when the second compensation effect of the first display area is obtained, and when the brightness is lower than the second brightness and the second grayscale, the second display area is compensated for the second time, so that the display panel after compensation includes the compensation effect of the first display area and the second display area for the second time. That is, by means of multiple compensation, the second display area can obtain the compensation effect of the first display area for the case of being lower than the second brightness and the second grayscale before the second display area is compensated, which satisfies the preset condition, and avoids the display problem of inconsistent brightness and chromaticity after the first display area is compensated separately in the related art. Therefore, compensating the second display area can improve the brightness uniformity of the display panel, improve the "ink stain" display problem of the display panel, and improve the image quality of the display panel.

[0131] Figure 7 is a schematic diagram of the structure of a compensation device 10 for a display panel provided in an embodiment of the present application, such as Figure 7 As shown, the compensation device 10 of the display panel includes:

[0132] A first compensation module 101, the first compensation module 101 is used to obtain first display data of a first display area of ​​the display panel at a first brightness and a first grayscale, and perform a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after the compensation;

[0133] A second compensation module 102, the second compensation module 102 is used to obtain second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and perform a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area;

[0134] A third compensation module 103, the third compensation module 103 is used to obtain third display data of the first display area at a third brightness and a third grayscale, and perform a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after being compensated;

[0135] The fourth compensation module 104 is used to obtain fourth display data of the second display area at a fourth brightness and a fourth grayscale, and perform a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale and the fourth grayscale are respectively smaller than the second grayscale.

[0136] Optionally, the first compensation module 101 is specifically used for:

[0137] Acquire a first compensation parameter corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameter enables the first display area to meet the first preset condition after being illuminated at the first brightness and the first grayscale;

[0138] A first compensation file is generated according to the first compensation parameter; wherein the first compensation file is used when lighting up the first display area.

[0139] Optionally, the second compensation module 102 is specifically configured to:

[0140] When the display panel is illuminated based on the first compensation file, image acquisition is performed on a display picture of the second display area at the second brightness and the second grayscale, and image data obtained by the image acquisition is used as second display data.

[0141] Optionally, the third compensation module 103 is specifically used for:

[0142] When the display panel is illuminated based on the first compensation file and the second compensation file, performing image acquisition on a display picture of the first display area at a third brightness and a third grayscale, and using image data obtained by the image acquisition as third display data;

[0143] The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data.

[0144] Optionally, the third compensation module 103 is further configured to:

[0145] According to the third display data and the second preset condition, a second compensation parameter corresponding to the first display area is obtained; wherein the second compensation parameter enables the first display area to meet the second preset condition after being illuminated at the third brightness and the third grayscale;

[0146] A third compensation file is generated according to the second compensation parameter; wherein the third compensation file is used when lighting up the first display area.

[0147] Optionally, the fourth compensation module 104 is specifically configured to:

[0148] When the display panel is illuminated based on the third compensation file, image acquisition is performed on a display picture of the second display area at a fourth brightness and a fourth grayscale, and image data obtained by the image acquisition is used as fourth display data.

[0149] Optionally, the compensation device 10 for a display panel further includes:

[0150] A storage module stores the first compensation file, the second compensation file, and the fourth compensation file in a storage circuit corresponding to the display panel, so that the timing driving circuit of the display panel obtains the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights up the display panel according to the first compensation file, the second compensation file, and the fourth compensation file;

[0151] The fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the fourth display data.

[0152] The display panel compensation device 10 has the same advantages as those of the related art and the display panel compensation method of the aforementioned embodiment, which will not be described in detail herein.

[0153] An embodiment of the present application also provides an electronic device, which includes: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store executable instructions, and the executable instructions enable the processor to execute the compensation method for the display panel as described in the aforementioned embodiment.

[0154] The electronic device has the same advantages as those of the display panel compensation method of the related art and the aforementioned embodiment, which will not be described in detail here.

[0155] An embodiment of the present application further provides a storage medium. When instructions in the storage medium are executed by a processor of an electronic device, the processor is enabled to execute the display panel compensation method as described in the aforementioned embodiment.

[0156] The storage medium has the same advantages as those of the compensation method for the display panel of the above-mentioned embodiment compared with the related art, and will not be described in detail here.

[0157] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0158] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0159] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0160] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the existence of other identical elements in the process, method, article or terminal device that includes the elements.

[0161] The above is a detailed introduction to the compensation method, compensation device, electronic device and storage medium of a display panel provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A compensation method for a display panel, characterized in that: The compensation method of the display panel includes: Acquire first display data of a first display area of ​​the display panel at a first brightness and a first grayscale, and perform a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after being compensated; Acquire second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and perform a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area; Acquire third display data of the first display area at a third brightness and a third grayscale, and perform a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after compensation; Obtain fourth display data of the second display area at a fourth brightness and a fourth grayscale, and perform a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness, and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale, and the fourth grayscale are respectively smaller than the second grayscale.

2. The display panel compensation method according to claim 1, characterized in that: The first display area is compensated for the first time according to the first display data, comprising: Acquire a first compensation parameter corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameter enables the first display area to meet the first preset condition after being illuminated at the first brightness and the first grayscale; A first compensation file is generated according to the first compensation parameter; wherein the first compensation file is used when lighting up the first display area.

3. The display panel compensation method according to claim 2, characterized in that: The obtaining of second display data of the second display area at a second brightness and a second grayscale includes: When the display panel is illuminated based on the first compensation file, image capture is performed on a display screen of the second display area at the second brightness and the second grayscale, and image data obtained by the image capture is used as the second display data.

4. The display panel compensation method according to claim 1, characterized in that: The obtaining of the third display data of the first display area at the third brightness and the third grayscale includes: When the display panel is illuminated based on the first compensation file and the second compensation file, performing image acquisition on a display picture of the first display area at the third brightness and the third grayscale, and using image data obtained by the image acquisition as the third display data; The second compensation file is a compensation file generated when the second display area is compensated for the first time according to the second display data.

5. The display panel compensation method according to claim 1, characterized in that: The performing a second compensation on the first display area according to the third display data comprises: According to the third display data and the second preset condition, obtaining a second compensation parameter corresponding to the first display area; wherein the second compensation parameter enables the first display area to meet the second preset condition after being illuminated at the third brightness and the third grayscale; A third compensation file is generated according to the second compensation parameter; wherein the third compensation file is used when the first display area is lit.

6. The display panel compensation method according to claim 5, characterized in that: The acquiring fourth display data of the second display area at a fourth brightness and a fourth grayscale includes: When the display panel is illuminated based on the third compensation file, image acquisition is performed on a display picture of the second display area at the fourth brightness and the fourth grayscale, and image data obtained by the image acquisition is used as the fourth display data.

7. The display panel compensation method according to any one of claims 1 to 6, characterized in that: The display panel compensation method further includes: storing a first compensation file, a second compensation file, and a fourth compensation file in a storage circuit corresponding to the display panel, so that a timing driving circuit of the display panel obtains the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights up the display panel according to the first compensation file, the second compensation file, and the fourth compensation file; The fourth compensation file is a compensation file generated when the second display area is compensated for the second time according to the fourth display data.

8. A compensation device for a display panel, characterized in that: The compensation device of the display panel comprises: a first compensation module, the first compensation module being used to obtain first display data of a first display area of ​​the display panel at a first brightness and a first grayscale, and to perform a first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition at the first brightness and the first grayscale after being compensated; a second compensation module, the second compensation module being used to obtain second display data of a second display area of ​​the display panel at a second brightness and a second grayscale, and to perform a first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than the transmittance of the second display area; a third compensation module, the third compensation module being used to obtain third display data of the first display area at a third brightness and a third grayscale, and to perform a second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition at the third brightness and the third grayscale after being compensated; A fourth compensation module, the fourth compensation module is used to obtain fourth display data of the second display area at a fourth brightness and a fourth grayscale, and perform a second compensation on the second display area according to the fourth display data; wherein the first brightness, the third brightness and the fourth brightness are respectively smaller than the second brightness, and the first grayscale, the third grayscale and the fourth grayscale are respectively smaller than the second grayscale.

9. An electronic device, characterized in that: The electronic device includes: a processor, a memory, a communication interface and a communication bus, and the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store executable instructions, and the executable instructions enable the processor to execute the compensation method for the display panel as described in any one of claims 1 to 7.

10. A storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the processor is enabled to execute the compensation method for a display panel as claimed in any one of claims 1 to 7.

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