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

Abstract

The application provides a compensation method and device of a display panel, an 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 a first brightness and a first gray scale, and performing first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition after being compensated; acquiring second display data of a second display area under a second brightness and a second gray scale, and performing first compensation on the second display area according to the second display data; acquiring third display data of the first display area under a third brightness and a third gray scale, and performing second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated; and acquiring fourth display data of the second display area under a fourth brightness and a fourth gray scale, and performing second compensation on the second display area according to the fourth display data. The application improves ink stains and improves the display panel quality.

Description

TECHNICAL FIELD

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

[0002] In related technologies, a display panel for full screen display can set a sensor for collecting images, such as a 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 consider both the display effect of the screen and the high transmittance, so the panel wiring of the first display area is different from that of the second display area. For example, the first display area can use a transparent electrode to lead the driving circuit out to the second display area. However, this can cause the pixels in the first display area to be more difficult to light up than the pixels in the second display area, especially at low brightness and low gray scale, the first display area will have a dark black area.

[0004] Currently, the quality of the display panel is improved by separately compensating the first display area and then compensating the brightness uniformity of the display panel, such as Demura compensation to eliminate mura, which refers to the phenomenon of non-uniformity of brightness, chroma, etc. However, after compensating the first display area at low brightness and low gray scale, different regions in the first display area have different display effects such as red, blue, black or yellow, which does not meet the compensation requirements. This causes the low brightness and low gray scale compensation data to be unable to be used when compensating the brightness and chroma uniformity, resulting in the display problem of "ink stains" after compensating the display panel. SUMMARY

[0005] The present application provides a compensation method and device of a display panel, an electronic device and a storage medium, which can solve the display problem of "ink stains" after compensating the display panel.

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

[0007] obtaining first display data of a first display area of the display panel at a first brightness and a first gray scale, and performing first compensation on the first display area according to the first display data, so that the first display area meets a first preset condition after being compensated at the first brightness and the first gray scale;

[0008] obtaining second display data of a second display area of the display panel at a second brightness and a second gray scale, and performing 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] obtaining third display data of the first display area under a third brightness and a third gray scale, and performing second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated under the third brightness and the third gray scale;

[0010] obtaining fourth display data of the second display area under a fourth brightness and a fourth gray scale, and performing 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 less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

[0011] Optionally, the first compensation on the first display area according to the first display data comprises:

[0012] 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 makes the first display area satisfy the first preset condition after being lit up under the first brightness and the first gray scale;

[0013] generating a first compensation file according to the first compensation parameter; wherein the first compensation file is used when the first display area is lit up.

[0014] Optionally, the second display data of the second display area under the second brightness and the second gray scale comprises:

[0015] under the condition that the display panel is lit up based on the first compensation file, image collection is performed on a display picture of the second display area under the second brightness and the second gray scale, and image data obtained by the image collection is taken as the second display data.

[0016] Optionally, the third display data of the first display area under the third brightness and the third gray scale comprises:

[0017] under the condition that the display panel is lit up based on the first compensation file and the second compensation file, image collection is performed on a display picture of the first display area under the third brightness and the third gray scale, and image data obtained by the image collection is taken as the third display data.

[0018] wherein the second compensation file is a compensation file generated when the first compensation is performed on the second display area according to the second display data.

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

[0020] 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 makes the first display area meet the second preset condition after being lit up under the third brightness and the third gray scale;

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

[0022] Optionally, the fourth display data of the second display area under a fourth brightness and a fourth gray scale is obtained, comprising:

[0023] In the case that the display panel is lit up based on the third compensation file, an image of a display picture of the second display area under the fourth brightness and the fourth gray scale is collected, and image data collected by the image is taken as the fourth display data.

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

[0025] The first compensation file, the second compensation file, and the fourth compensation file are stored into a storage circuit corresponding to the display panel, so that a time sequence 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 a second time according to the fourth display data.

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

[0028] A first compensation module is configured to obtain first display data of a first display area of the display panel under a first brightness and a first gray scale, and compensate the first display area for a first time according to the first display data, so that the first display area meets a first preset condition after being compensated under the first brightness and the first gray scale;

[0029] A second compensation module is configured to obtain second display data of a second display area of the display panel under a second brightness and a second gray scale, and compensate the second display area 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;

[0030] a third compensation module, configured to acquire third display data of the first display area under a third brightness and a third gray scale, and perform second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated under the third brightness and the third gray scale;

[0031] a fourth compensation module, configured to acquire fourth display data of the second display area under a fourth brightness and a fourth gray scale, and perform 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 less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

[0032] Optionally, the first compensation module is specifically configured 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 makes the first display area satisfy the first preset condition after being lit up under the first brightness and the first gray scale;

[0034] generate a first compensation file according to the first compensation parameter; wherein the first compensation file is used when the first display area is lit up.

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

[0036] acquire image data of the second display area under the second brightness and the second gray scale based on the first compensation file, and use the image data as the second display data.

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

[0038] acquire image data of the first display area under the third brightness and the third gray scale based on the first compensation file and the second compensation file, and use the image data as the third display data.

[0039] wherein the second compensation file is a compensation file generated when the second compensation is performed on the second display area according to the second display data.

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

[0041] 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 makes the first display area meet the second preset condition after being lighted up under the third brightness and the third gray scale;

[0042] According to the second compensation parameter, a third compensation file is generated; wherein the third compensation file is used for lighting up the first display area.

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

[0044] In the case that the display panel is lighted up based on the third compensation file, an image of a display picture of the second display area under the fourth brightness and the fourth gray scale is collected, and image data obtained by the image collection is taken as the fourth display data.

[0045] Optionally, the compensation device of the display panel further comprises:

[0046] A storage module stores the first compensation file, the second compensation file, and the fourth compensation file into a storage circuit corresponding to the display panel, so that a time sequence driving circuit of the display panel acquires 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, the processor, the memory and the communication interface complete the communication among each other through the communication bus; the memory is used to deposit executable instructions, and the executable instructions make the processor execute the compensation method of the display panel as described in the first aspect.

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

[0050] The present application provides a display panel compensation method, compensation device, electronic device, and storage medium, each having at least the following advantages: Through a phased compensation approach, the second display area, whether at the second brightness and second grayscale, or below the second brightness and second grayscale, can achieve the same compensation effect as the first display area for conditions below the second brightness and second grayscale, meeting preset conditions, before compensation is performed on the second display area. This avoids the display problem of inconsistent brightness and chromaticity that persists after separate compensation of the first display area in the related art. Therefore, compensating the second display area based on the compensation effect of the first display area meeting preset conditions can improve the "ink stain" display problem of the display panel and enhance 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 following briefly introduces the drawings required for use in the description of the embodiments of the present application or related technologies. 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 any creative labor.

[0052] Figure 1 This 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 at high brightness in the related art;

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

[0055] Figure 4 1 is a schematic diagram of the steps of a compensation method for a display panel provided in an embodiment of the present application;

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

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

[0058] Figure 7 3 is a schematic structural diagram of a compensation device for a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in some embodiments. It is obvious that the described embodiments are some of the embodiments of the present application but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0060] With the development of active-matrix organic light-emitting diode (AMOLED) technology, in order to meet the increasing demand of users, FDC technology emerges as the times require. The display effect of the FDC area of the display panel using FDC is one of the important evaluation indexes. Figure 1 is a schematic diagram of a wire of a display panel using an under-screen camera in the related art, as shown in Figure 1 The panel wire of the FDC area only retains an electroluminescent (EL) device, and the aperture ratio of the anode is reduced. The backplane (BP) driving circuit of the FDC area is led out to the normal display (NOR) area through an indium tin oxide (ITO) wire, and a thin film transistor (TFT) is arranged in the NOR area, as shown in Figure 1 Due to the BP circuit led out through the panel wire, it is more difficult for the pixels in the FDC area to light up, especially at low brightness and low gray scale, the FDC area will have obvious dark black areas, which greatly affects the display effect.

[0061] Figure 2 is a display effect diagram of the FDC area after separate compensation under high brightness in the related art. For the display panel using FDC, the first display area, i.e., the FDC area, is divided into two regions, as shown in Figure 2 the middle region and the two side regions. The display effect brightness and uniformity of the middle region and the two side regions are relatively balanced after compensation under high brightness. Figure 3 is a display effect diagram of the FDC area after separate compensation under low brightness in the related art, as shown in Figure 3As shown, after the FDC area is compensated, different regions have different display effects of red, cyan, black and yellow under low brightness, and the compensation effect is inconsistent with the trend of compensation effect under high brightness. Therefore, after the FDC area is compensated separately and then the display panel is Demura, there is an inconsistency in brightness and chrominance after the FDC area is compensated under low brightness. The low gray scale compensation data of medium and high brightness and low brightness is obtained by linear interpolation of low brightness compensation data when taking a photo. Therefore, the FDC area compensation data under low brightness cannot be used during Demura, otherwise the interpolated compensation data will cause display abnormalities in the FDC area under medium and high brightness. In this way, the display problem of "ink stain" on the screen surface of the display panel under low brightness and low gray scale cannot be improved, resulting in poor display effect of the display panel.

[0062] Figure 4 is a step schematic diagram of a compensation method of a display panel provided by an embodiment of the present application, as shown in the figure, the compensation method of the display panel comprises: Figure 4

[0063] Step S1, obtaining first display data of a first display area of a display panel under first brightness and first gray scale, and performing first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition after being compensated under the first brightness and the first gray scale;

[0064] Step S2, obtaining second display data of a second display area of the display panel under second brightness and second gray scale, and performing 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 under third brightness and third gray scale, and performing second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated under the third brightness and the third gray scale;

[0066] Step S4, obtaining fourth display data of the second display area under fourth brightness and fourth gray scale, and performing 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 less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

[0067] ​The compensation method provided in the embodiment can be applied to a display panel using an under-screen image sensor, for example, a front-facing camera (FDC). The under-screen image sensor is arranged in a first display area of the display panel, and then the display area of the display panel except the area where the under-screen image sensor is located can be referred to as a normal display (NOR) area. In the embodiment, the normal display area is referred to as a 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 the 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 gray scales in batches, thereby improving the display effect of the display panel.

[0068] In some embodiments, the second brightness is a high brightness, and the second gray scale is a high gray scale. 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 gray scale, the third gray scale, and the fourth gray scale are respectively less than the second gray scale, the first gray scale, the third gray scale, and the fourth gray scale can be low gray scale. At least two of the first brightness, the third brightness, and the fourth brightness can be equal, and at least two of the first gray scale, the third gray scale, and the fourth gray scale can also be equal, which is not limited in the embodiments of the present application.

[0069] For example, the high brightness generally refers to 1000-600 nits, and the 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 respectively take a brightness value in the range of 2-3.5 nits.

[0070] For example, the high gray scale generally refers to 255 gray scales, and the low gray scale generally refers to 32 gray scales and below. The second gray scale can include one or more gray scale values near 255 gray scales, and the first gray scale, the third gray scale, and the fourth gray scale can respectively include one or more gray scale values in the range of 32 gray scales and below.

[0071] In actual application, the second brightness and the second gray scale can represent a basic used high gray scale value at a certain high brightness, and the first brightness and the first gray scale, the third brightness and the third gray scale, or the fourth brightness and the fourth gray scale can respectively represent a basic used low gray scale value at a certain low brightness. This is only an example, which is not limited in the embodiments of the present application.

[0072] In some embodiments, the display panel is first driven by the driving control circuit to display a picture at the first brightness and the first gray scale, i.e., the display panel is lit at the first brightness and the first gray scale. The picture displayed by the display panel at the first brightness and the first gray scale is a dark picture, which can be a monochromatic picture, such as a picture in which only red, green or blue sub-pixels are lit, or a mixed-color picture, such as a picture in which at least two colors of sub-pixels are lit. For example, the display panel is lit at the lowest brightness and 135 gray scales, and the picture displayed by the display panel without any compensation is a dark picture with a color difference of 0.2. Figure 3 For example, as shown in the FDC area, the middle area is green and the two side areas are dark.

[0073] In some embodiments, after the display panel is lit at the first brightness and the first gray scale, the picture displayed by the display panel at the first brightness and the first gray scale can be captured, for example, by a charge coupled device (CCD) camera to obtain an image of the picture. 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 in this regard.

[0074] Specifically, if the image of the first display area is captured, the image data obtained by the image capture can be directly used as the first display data. If the image of the entire display panel is captured, the picture data of the first display area can be extracted from the captured image data and used 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 a first preset condition after being compensated at the first brightness and the first gray scale. The first preset condition represents the display effect of the first display area after being compensated at the first brightness and the first gray scale. For example, the first preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal after the first display area is compensated at the first brightness and the first gray scale, thereby avoiding the problem of inconsistent brightness and chroma after the first display area is compensated.

[0076] Alternatively, the first preset condition can be that the display effect of the first display area and the second display area remains consistent after the first display area is compensated at the first brightness and the first gray scale, such as that the visual color of the first display area is substantially consistent with that of the second display area. Specifically, the first preset condition can be that, after the first display area is compensated, the gray scale of the picture displayed by the first display area is consistent with that of the picture displayed by the second display area at the first brightness and the first gray scale, and the color difference is less than a preset threshold or within a preset range.

[0077] For example, 135 gray scales are set, the display panel is lighted at the lowest brightness and low gray scale to collect image data, the first display area is compensated for the first time and has the same display effect as the normal display area at low brightness and low gray scale, for example Figure 3 The situation that the middle region of the FDC area emits green and the two side regions emit dark is improved, the ideal effect that the FDC area emits black is achieved, and the display panel as a whole presents the display effect of emitting black at the lowest brightness and low gray scale. This is only an example, and the embodiments of the present application are not limited thereto.

[0078] In a specific embodiment, the first display area can be an FDC area, and the first compensation for the first display area can adopt FDC compensation. Specifically, image data of the FDC area at the first brightness and the first gray scale can be acquired, the actual brightness value of each sub-pixel in the first display area can be obtained according to the image data, if there is a difference between the actual brightness value and the ideal brightness value of any sub-pixel, the difference between the actual brightness value and the ideal brightness value can be taken as the compensation value of the sub-pixel, the ideal brightness value of the sub-pixel can be achieved by driving the sub-pixel according to the compensation value when the first display area is lighted next time, and the brightness value of the sub-pixel can be controlled to achieve the ideal brightness value by the pixel driving circuit of the sub-pixel. This is only an example, and the embodiments of the present application are not limited thereto.

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

[0080] Sub-step A1, acquiring first compensation parameters corresponding to the first display area according to the first display data and the first preset condition; wherein the first compensation parameters make the first display area satisfy the first preset condition when being lighted at the first brightness and the first gray scale;

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

[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 gray scale, and the first preset condition represents the display effect of the first display area after being compensated at the first brightness and the first gray scale. The first display area is compensated for the first time according to the first display data, that is, the first compensation parameters corresponding to the first display area are acquired by comparing the first display data and the first preset condition, and then the first compensation parameters are used for display compensation when the first display area is lighted subsequently, so that the first display area after compensation achieves the ideal display effect.

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

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

[0085] In some embodiments, the actual brightness values of the sub-pixels in the first display area can be obtained according to the first display data. Then, the ideal brightness values of the sub-pixels in the first display area can be determined according to the first preset condition. Then, the compensation values of the sub-pixels can be determined according to the ideal brightness values and the actual brightness values. For example, the brightness difference value can be directly used as the compensation value. The first compensation parameter corresponding to the first display area includes the compensation values of the sub-pixels in the first display area. Then, the compensation values of the sub-pixels can be converted into a compensation file that can be used to light 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] The first compensation parameter obtained is different when the first preset condition 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 substantially equal, the compensation values of the sub-pixels can be determined according to the brightness difference between the sub-pixel and other sub-pixels in the pixel to which the sub-pixel belongs. In this way, the brightness of different sub-pixels in a single pixel after compensation is substantially equal. This is only an example, and the embodiments of the present application are not limited in this regard.

[0087] In some embodiments, the first compensation parameter corresponding to the first display area is obtained according to the first display data and the first preset condition. Since the first compensation parameter makes the first display area satisfy the first preset condition after being lit at the first brightness and the first gray scale, the first compensation file is generated according to the first compensation parameter. When the first display area is lit, the first compensation file is used to compensate the first display area. The compensated first display area can satisfy the first preset condition at the first brightness and the first gray scale, and the preset display effect is achieved, thereby improving the display quality of the display panel.

[0088] The step S2 can include the following sub-steps:

[0089] In the sub-step B1, the display picture of the second display area at the second brightness and the second gray scale is captured when the display panel is lit based on the first compensation file, and the image data obtained by the image capture is taken as the second display data.

[0090] In some embodiments, the first compensation file can be a data file recognizable by a driving control circuit of the display panel. The data file includes the first compensation parameter. The first compensation file can be sent to the driving control circuit, so that the driving control circuit drives the display panel to display the compensated picture. Alternatively, the first compensation file can 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 by a timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN file.

[0091] The display picture of the display panel is a picture at the second brightness and the second gray scale, and the display picture 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 picture at the second brightness and the second gray scale is a light color picture. The light color picture can be a single color picture or a mixed color picture, which is not limited in the embodiments of the present application.

[0092] In some embodiments, after the display panel is lit at the second brightness and the second gray scale, the display picture of the display panel at the second brightness and the second gray scale can be captured. For example, the display panel can be photographed by a CCD camera to obtain the image of the display picture. The captured image can be the image of the entire display panel or the image of the second display area. Specifically, if the image of the second display area is captured, the image data obtained by the image capture can be directly taken as the second display data. If the image of the entire display panel is captured, the picture 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 by the first compensation such that the second display area satisfies a third preset condition after being compensated at the second brightness and the second grayscale. The third preset condition represents a display effect of the second display area after being compensated at the second brightness and the second grayscale. For example, the third preset condition is that the mura phenomenon is eliminated after the second display area is compensated at the second brightness and the second grayscale, and the first compensation of the second display area is the first Demura compensation, so as to improve the brightness uniformity of the second display area.

[0094] In some embodiments, the compensation parameter corresponding to the second display area can be obtained by comparing the second display data and the third preset condition, the compensation parameter making the second display area satisfy the third preset condition after being lighted at the second brightness and the second grayscale. Then, the second compensation file is generated according to the second compensation parameter, the second compensation file being 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 being used when the second display area is lighted. The second compensation file can be a compensation BIN file or a data file recognizable by the drive control circuit, and the embodiments of the present application do not limit this.

[0095] Specifically, the second display data represents the actual display effect of the second display area at the second brightness and the second grayscale, and the third preset condition represents the display effect of 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 of the second display area at the second brightness and the second grayscale are determined, and then the brightness values of the normal pixels normally displayed within a certain range around the abnormal pixels are obtained. The brightness values of the abnormal pixels and the normal pixels are homogenized, such as increasing or decreasing the grayscale value of the abnormal pixels, so that the abnormal pixels and the normal pixels are visually uniform in brightness when displayed. The compensation parameter of the second display area includes the compensation value corresponding to each abnormal pixel. Then, the compensation value of the abnormal pixel is converted into a compensation file that can be used for lighting the second display area, to obtain the second compensation file.

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

[0097] Sub-step C1, under the condition that the display panel is lighted based on the first compensation file and the second compensation file, image acquisition is performed on the display picture of the first display area at the third brightness and the third grayscale, and the image data obtained by the image acquisition is taken 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 can be data files recognizable by a driving control circuit of the display panel, and the first compensation file and the second compensation file can be sent to the driving control circuit, so that the driving control circuit drives the display panel to display the compensated picture. Alternatively, the first compensation file and the second compensation file can also be compensation BIN files stored in a storage circuit connected to the display panel, and the compensation BIN files are acquired from the storage circuit by a timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN files.

[0100] The display panel displays a picture at the third luminance and the third gray scale, and the picture includes the display effect of the first display area after the first compensation and the display effect of the second display area after the first compensation, i.e., the display panel is lit based on the first compensation file and the second compensation file. The picture at the third luminance and the third gray scale is a dark picture, and the dark picture can be a monochrome picture or a mixed color picture, which is not limited in the embodiments of the present application.

[0101] In some embodiments, after the display panel is lit at the third luminance and the third gray scale, the picture of the display panel at the third luminance and the third gray scale can be collected, for example, the display panel can be photographed by a CCD camera to obtain the picture of the display panel. The collected picture can be the picture of the entire display panel or the picture of the first display area. Specifically, if the picture of the first display area is collected, the image data obtained by the image collection can be directly used as the third display data. If the picture of the entire display panel is collected, the picture data of the first display area can be extracted from the collected image data as the third display data.

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

[0103] Sub-step C2: acquiring the second compensation parameter corresponding to the first display area according to the third display data and the second preset condition; the second compensation parameter makes the first display area satisfy the second preset condition after being lit at the third luminance and the third gray scale;

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

[0105] In some embodiments, the third display data represents actual display effect of the first display area at the third brightness and the third gray scale, and the second preset condition represents display effect of the first display area after compensation at the third brightness and the third gray scale. The first display area is compensated for the 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 for display compensation when the first display area is subsequently lit, so that the first display area after compensation achieves ideal display effect. The second preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal after compensation at the third brightness and the third gray scale, thereby avoiding the problem of inconsistent brightness and chrominance of the first display area after compensation.

[0106] Alternatively, the second preset condition can also be that the display effect of the first display area and the second display area remains consistent after compensation at the third brightness and the third gray scale, such as that the visual color of the first display area is substantially consistent with that of the second display area, which is not limited in the embodiments of the present application. Specifically, the second preset condition can be that the display picture of the first display area and the display picture of the second display area have consistent gray scales and a color difference less than a preset threshold or within a preset range at the third brightness and the third gray scale after compensation of the display panel. In addition, if the first brightness is equal to the third brightness and the first gray scale is equal to the third gray scale, the first preset condition and the second preset condition can be the same preset condition. This is only an example, which is not limited in the embodiments of the present application.

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

[0108] The second compensation parameter obtained is different if the second preset condition 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 substantially equal, 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 the sub-pixel belongs, so that the brightness of different sub-pixels in a single pixel is substantially equal after compensation. This is only an example, which is not limited in the embodiments of the present application.

[0109] In some embodiments, the third compensation file can be a compensation BIN file, but the third compensation file can 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, for use only when the first display area is lit. That is, in this embodiment, the compensation file can also be generated first as a compensation BIN file, and then converted into a data file recognizable by the IC. Here, only an example is given, and the embodiments of the present application do not limit this.

[0110] In some embodiments, the second compensation parameter corresponding to the first display area is obtained according to the third display data and the second preset condition. Since the second compensation parameter causes the first display area to satisfy the second preset condition after being lit at the third brightness and the third gray scale, the third compensation file is generated according to the second compensation parameter, so that the first display area is compensated when lit using the third compensation file. The first display area after compensation can satisfy the second preset condition at the third brightness and the third gray scale, achieve the preset display effect, and thus improve the display quality of the display panel.

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

[0112] Sub-step D1, in the case that the display panel is lit based on the third compensation file, image acquisition is performed on the display picture of the second display area at the fourth brightness and the fourth gray scale, and the image data obtained by image acquisition is taken as the fourth display data.

[0113] In some embodiments, the third compensation file can be a data file recognizable by a driving control circuit of the display panel, and the data file includes the second compensation parameter. The third compensation file can be sent to the driving control circuit, so that the driving control circuit drives the display panel to display the compensated picture. Alternatively, the third compensation file can 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 by a timing control circuit, and then the display panel is driven to display the compensated picture based on the compensation BIN file.

[0114] The display picture of the display panel is a picture at the fourth brightness and the fourth gray scale, and the display picture includes the display effect of the first display area after the second compensation, that is, the display panel is lit based on the third compensation file. The display picture at the fourth brightness and the fourth gray scale is a dark picture, and the dark picture can be a monochrome picture or a mixed color picture, which is not limited by the embodiments of the present application.

[0115] In some embodiments, after the display panel is lit up at the fourth brightness and the fourth gray scale, an image of the display panel at the fourth brightness and the fourth gray scale can be collected, for example, the display panel can be photographed by a CCD camera to obtain an image of the display panel. The collected image can be an image of the entire display panel or an image of the second display area. Specifically, if the image of the second display area is collected, the image data obtained by image collection can be directly used as the fourth display data. If the image of the entire display panel is collected, the picture data of the second display area can be extracted from the collected image data as the fourth display data.

[0116] In some embodiments, the second display area is compensated a second time so that the second display area satisfies a fourth preset condition after being compensated at the fourth brightness and the fourth gray scale. The fourth preset condition represents the display effect of the second display area after being compensated at the fourth brightness and the fourth gray scale. For example, the fourth preset condition is that the mura phenomenon of the second display area is eliminated after being compensated, and the second compensation of 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 parameter corresponding to the second display area can be obtained by comparing the fourth display data and the fourth preset condition. The compensation parameter makes the second display area satisfy the fourth preset condition after being lit up at the fourth brightness and the fourth gray scale. Then, the fourth compensation file is generated according to the compensation parameter. The fourth compensation file is a compensation file generated when the second display area is compensated a second time according to the second display data, and the fourth compensation file is used when the second display area is lit up. The fourth compensation file can be a compensation BIN file or a data file that can be recognized by a drive control circuit, and the embodiments of the present application do not limit this.

[0118] Specifically, the fourth display data represents the actual display effect of the second display area at the fourth brightness and the fourth gray scale, and the fourth preset condition represents the display effect of the second display area after being compensated at the fourth brightness and the fourth gray scale. According to the fourth display data, the abnormal pixels corresponding to the mura phenomenon of the second display area at the fourth brightness and the fourth gray scale are determined, and then the brightness values of the normal pixels normally displayed within a certain range around the abnormal pixels are obtained. The brightness values of the abnormal pixels and the normal pixels are uniformly processed, for example, the brightness average of a plurality of normal pixels is calculated, and then the brightness average is assigned to the abnormal pixels as the compensation value of the abnormal pixels. The compensation parameter of the second display area includes the compensation value 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 the 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 into the 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 into the storage circuit before the second display area is compensated for the second time, after step 4, a step of storing the fourth compensation file into the storage circuit is performed. Otherwise, after the second display area is compensated for the second time, the fourth compensation file is obtained, and the first compensation file, the second compensation file, and the fourth compensation file can be stored into the storage circuit corresponding to the display panel together.

[0123] Specifically, the first compensation file, the second compensation file, and the fourth compensation file can be burned into a FLASH memory connected to the display panel, and the TCON can read the compensation BIN file from the FLASH memory when starting up, 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 the TCON can compensate the display picture of the display panel at different brightness and different gray scales based on the compensation BIN file every time the display panel is lighted up, thereby improving the picture of the display panel.

[0124] In some embodiments, the first brightness and the first gray scale can be low brightness and low gray scale, and the first compensation file is a compensation file at low brightness and low gray scale. For compensation files at medium brightness and low gray scale, high brightness and low gray scale, the compensation file at low brightness and low gray scale can be interpolated to obtain the compensation files. The TCON can perform bilinear interpolation on the compensation values in the read compensation BIN file, so as to restore the compensation parameters of all pixel points at high brightness and low gray scale. In this way, the best compensation parameters are obtained at high, medium, and low gray scales, and the display effect of the first display area at medium and high brightness and low gray scale will not deviate from the final compensation effect due to excessive interpolation deviation, so that the first display area can present the best display effect at medium and high brightness and low gray scale, and the "ink stain" problem of the second display area at low brightness and low gray scale can also be greatly optimized.

[0125] Figure 5 is a schematic diagram of the "ink stain" of the display panel in the related art, Figure 5The display effect of the display panel at 3.5 nits and grayscale 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 is performed to obtain the first display data of the FDC area at low brightness and low grayscale. Then, the first compensation parameters of the FDC area are generated to obtain the compensation BIN file BIN_F1. Based on the BIN_F1 file, the FDC area is subjected to the first under-screen camera (FDC) compensation. Secondly, with the effect of the first BIN_F1 compensation, the NOR area is photographed for the first time at high brightness and high grayscale to obtain the second display data of the NOR area and perform the first demura compensation, obtaining the compensation BIN file BIN_D1 for 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. Then, the second compensation parameter of the FDC area is generated to obtain the compensation BIN file BIN_F2. Based on the BIN_F2 file, the FDC area is compensated for the second under-screen camera (FDC). The BIN_F2 file does not need to be burned into the FLASH memory to enable it. Instead, 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 is photographed twice at low brightness and low grayscale to obtain the fourth display data of the NOR area and perform a second demura compensation to obtain the compensation BIN file BIN_D2 of the NOR area. At this point, thanks to the compensation effect of the BIN_F2 file, the display effect of the FDC area at low brightness and low grayscale is consistent with the display effect of the FDC area at high brightness and low grayscale. In other words, the FDC area can achieve ideal compensation effects at both high and low brightness levels, so the low-brightness data obtained from the photo can be properly 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 for the display panel's FDC compensation and demura compensation.

[0128] In actual application, the first display area can achieve ideal compensation effect under high / low brightness after the compensation method provided in the embodiment is used to compensate the display panel in batches, the brightness uniformity of the display panel is greatly improved, and the "ink stain" problem of the display panel under low brightness and low gray scale is effectively solved. The display panel quality, product yield and market competitiveness can be improved.

[0129] In the embodiment, first display data of a first display area of a display panel under first brightness and first gray scale is acquired, and the first display area is compensated for the first time according to the first display data, so that the first display area satisfies a first preset condition after being compensated under the first brightness and the first gray scale; second display data of a second display area of the display panel under second brightness and second gray scale is acquired, and the second display area is compensated for the first time according to the second display data; the transmittance of the first display area is greater than that of the second display area; third display data of the first display area under third brightness and third gray scale is acquired, and the first display area is compensated for the second time according to the third display data, so that the first display area satisfies a second preset condition after being compensated under the third brightness and the third gray scale; fourth display data of the second display area under fourth brightness and fourth gray scale is acquired, and the second display area is compensated for the second time according to the fourth display data; the first brightness, the third brightness and the fourth brightness are respectively less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

[0130] In this way, the first display area can be compensated first at the first brightness and the first grayscale to obtain a compensation effect corresponding to the first preset condition. Then, the second display area can be compensated at the second brightness and the second grayscale to obtain a compensation effect corresponding to the second preset condition. Finally, the first display area and the second display area can be compensated at the second brightness and the second grayscale to obtain a compensation effect corresponding to the third preset condition. In this way, the second display area can obtain the compensation effect of the first display area at the second brightness and the second grayscale or at a brightness and a grayscale lower than the second brightness and the second grayscale, so that the display panel can have a high brightness uniformity and a high display quality.

[0131] Figure 7 FIG. 10 is a structural diagram of a compensation device 10 of a display panel provided by an embodiment of the present application. As shown in FIG. 10, the compensation device 10 of the display panel includes: Figure 7

[0132] a first compensation module 101, configured to obtain first display data of a first display area of the display panel at a first brightness and a first grayscale, and compensate the first display area at 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 being compensated;

[0133] a second compensation module 102, configured to obtain second display data of a second display area of the display panel at a second brightness and a second grayscale, and compensate the second display area at a first time according to the second display data; and

[0134] a third compensation module 103, configured to obtain third display data of the first display area at a third brightness and a third grayscale, and compensate the first display area at 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 being compensated.

[0135] ​The fourth compensation module 104 is configured to acquire fourth display data of the second display area under a fourth brightness and a fourth gray scale, and perform 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 less than the second brightness respectively, and the first gray scale, the third gray scale and the fourth gray scale are less than the second gray scale respectively.

[0136] Optionally, the first compensation module 101 is specifically configured to:

[0137] acquire a first compensation parameter corresponding to the first display area according to the first display data and a first preset condition; wherein the first compensation parameter makes the first display area satisfy the first preset condition after being lighted up under the first brightness and the first gray scale;

[0138] generate a first compensation file according to the first compensation parameter; wherein the first compensation file is used for lighting up the first display area.

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

[0140] acquire image data obtained by image collection as the second display data, in a case that the display panel is lighted up based on the first compensation file, the second display area is under the second brightness and the second gray scale, and the display picture of the second display area is collected.

[0141] Optionally, the third compensation module 103 is specifically configured to:

[0142] acquire image data obtained by image collection as the third display data, in a case that the display panel is lighted up based on the first compensation file and the second compensation file, the first display area is under the third brightness and the third gray scale, and the display picture of the first display area is collected.

[0143] The second compensation file is a compensation file generated when the second compensation is performed on the second display area according to the second display data.

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

[0145] acquire a second compensation parameter corresponding to the first display area according to the third display data and a second preset condition; wherein the second compensation parameter makes the first display area satisfy the second preset condition after being lighted up under the third brightness and the third gray scale;

[0146] generate a third compensation file according to the second compensation parameter; wherein the third compensation file is used for lighting up the first display area.

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

[0148] In a case that the display panel is lighted based on the third compensation file, an image of the display screen of the second display area under the fourth brightness and the fourth gray scale is collected, and image data collected by the image collection is taken as the fourth display data.

[0149] Optionally, the compensation device 10 of the display panel further comprises:

[0150] The storage module stores the first compensation file, the second compensation file, and the fourth compensation file into the storage circuit corresponding to the display panel, so that the timing driving circuit of the display panel acquires the first compensation file, the second compensation file, and the fourth compensation file from the storage circuit, and lights 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 compensation device 10 of the display panel has the same advantages as the compensation method of the display panel of the foregoing embodiments compared with the related art, which will not be repeated here.

[0153] The electronic device provided in the embodiments of the present application comprises a processor, a memory, a communication interface, and a communication bus. The processor, the memory, and the communication interface complete communication with each other through the communication bus. The memory is used to store executable instructions. The executable instructions make the processor execute the compensation method of the display panel of the foregoing embodiments.

[0154] The electronic device has the same advantages as the compensation method of the display panel of the foregoing embodiments compared with the related art, which will not be repeated here.

[0155] The embodiments of the present application further provide a storage medium. When the instructions in the storage medium are executed by the processor of the electronic device, the processor can execute the compensation method of the display panel of the foregoing embodiments.

[0156] The storage medium has the same advantages as the compensation method of the display panel of the foregoing embodiments compared with the related art, which will not be repeated here.

[0157] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0158] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0159] While preferred embodiments of the application have been described, a wide variety of modifications, alterations, and permutations of these embodiments can become apparent to those skilled in the art in light of the foregoing detailed description. Accordingly, it is to be understood that other embodiments can be utilized, and that the scope of the application is not limited to the specific embodiments described herein. The specification and drawings should be regarded as illustrative only and should not be considered restrictive in any sense. The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification.

[0160] Finally, it should be noted that, in the specification, relational terms such as first and second, and the like, can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0161] The above provides a compensation method and device of a display panel, an electronic device and a storage medium. The principles and implementation manners of the application are described by using specific examples. The above description of the embodiments is only used to help understand the method and core idea of the application. For those skilled in the art, according to the idea of the application, the specific implementation manners and application range can be changed. The above description should not be understood as a limitation of the application.

Claims

1. A compensation method of a display panel, characterized by, The compensation method of the display panel comprises: obtaining first display data of a first display area of the display panel under a first brightness and a first gray scale, and performing first compensation on the first display area according to the first display data, so that the first display area satisfies a first preset condition after being compensated under the first brightness and the first gray scale, wherein the first preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal or the display effects of the first display area and a second display area remain consistent under the first brightness and the first gray scale; obtaining second display data of a second display area of the display panel under a second brightness and a second gray scale, and performing first compensation on the second display area according to the second display data; wherein the transmittance of the first display area is greater than that of the second display area; obtaining third display data of the first display area under a third brightness and a third gray scale, and performing second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated under the third brightness and the third gray scale, wherein the second preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal or the display effects of the first display area and the second display area remain consistent under the third brightness and the third gray scale; obtaining fourth display data of the second display area under a fourth brightness and a fourth gray scale, and performing 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 less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

2. The compensation method of a display panel according to claim 1, wherein, The first compensation on the first display area according to the first display data comprises: 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 makes the first display area satisfy the first preset condition after being lit up under the first brightness and the first gray scale; generating a first compensation file according to the first compensation parameter; wherein the first compensation file is used when the first display area is lit up.

3. The compensation method of a display panel according to claim 2, wherein, The second display data of the second display area under the second brightness and the second gray scale comprises: under the condition that the display panel is lit up based on the first compensation file, image acquisition is performed on a display picture of the second display area under the second brightness and the second gray scale, and image data obtained by image acquisition is taken as the second display data.

4. The compensation method of a display panel according to claim 1, wherein, The third display data of the first display area under the third brightness and the third gray scale comprises: under the condition that the display panel is lit up based on the first compensation file and a second compensation file, image acquisition is performed on a display picture of the first display area under the third brightness and the third gray scale, and image data obtained by image acquisition is taken 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 compensation method of a display panel according to claim 1, wherein, The second compensation of the first display area according to the third display data comprises: 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 makes the first display area meet the second preset condition after being lit up at the third brightness and the third gray scale; According to the second compensation parameter, a third compensation file is generated; wherein the third compensation file is used for lighting up the first display area.

6. The compensation method of a display panel according to claim 5, wherein, The fourth display data of the second display area at a fourth brightness and a fourth gray scale comprises: In the case that the display panel is lit up based on the third compensation file, the display picture of the second display area at the fourth brightness and the fourth gray scale is image collected, and the image data obtained by image collection is taken as the fourth display data.

7. The compensation method of a display panel according to any one of claims 1-6, wherein, The compensation method of the display panel further comprises: The first compensation file, the second compensation file, and the fourth compensation file are stored into the 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; 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 of a display panel, characterized by, The compensation device of the display panel comprises: The first compensation module is configured to obtain first display data of a first display area of the display panel at a first brightness and a first gray scale, and compensate the first display area for the first time according to the first display data, so that the first display area meets a first preset condition after being compensated at the first brightness and the first gray scale, wherein the first preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal or the display effects of the first display area and a second display area remain consistent at the first brightness and the first gray scale; The second compensation module is configured to obtain second display data of a second display area of the display panel at a second brightness and a second gray scale, and compensate the second display area for the 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. The third compensation module is configured to acquire third display data of the first display area at a third brightness and a third gray scale, and perform second compensation on the first display area according to the third display data, so that the first display area satisfies a second preset condition after being compensated at the third brightness and the third gray scale. The second preset condition is that the brightness values of different sub-pixels of each pixel in the first display area are substantially equal or the display effects of the first display area and the second display area remain consistent at the third brightness and the third gray scale. The fourth compensation module is configured to acquire fourth display data of the second display area at a fourth brightness and a fourth gray scale, and perform second compensation on the second display area according to the fourth display data. The first brightness, the third brightness and the fourth brightness are respectively less than the second brightness, and the first gray scale, the third gray scale and the fourth gray scale are respectively less than the second gray scale.

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

10. A storage medium, characterized by When the instructions in the storage medium are executed by the processor of the electronic device, the processor can execute the compensation method of the display panel in any one of claims 1 to 7.

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