Display driving method, display driving device, electronic equipment and storage medium

Abstract

The invention relates to a display driving method, a display driving device, electronic equipment and a storage medium. The display driving method comprises the following steps: determining first backlight brightness, and determining the gray scale of each pixel in a next frame of picture to be displayed and a current frame of display picture of a screen; and determining a first mapping gray scale value corresponding to the first gray scale, determining second backlight brightness corresponding to the first mapping gray scale value, and determining a second mapping gray scale value corresponding to the second backlight brightness. And determining a gray scale change parameter for changing the second mapping gray scale value into the first mapping gray scale value. And determining gray scale compensation data according to the second backlight brightness and the gray scale change parameter, and carrying out gray scale compensation on the second gray scale so as to carry out picture display at the next frame by the first gray scale. According to the invention, the problems that the highest gray scale cannot be compensated, the high gray scale cannot be compensated in place, the lowest gray scale cannot be compensated, and the low gray scale cannot be compensated in place are solved, and smear is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the field of screen display, and in particular to a display driving method, a display driving device, an electronic device and a storage medium. Background Art

[0002] When the display screen of the terminal display changes and the pixels of the display screen switch grayscale, due to the long response time of the display screen's driving circuit and the sampling and holding effect, the brightness of the first frame after the grayscale switching will not be adequate, which will cause ghosting or motion blur.

[0003] In the related art, overdrive (OD) technology is usually used to solve or alleviate the ghosting. By increasing the drive circuit signal to shorten the response time, the image can quickly reach the target brightness in a shorter time, thereby solving or alleviating the ghosting. There are currently two commonly used methods to increase the drive circuit signal. Overdrive is achieved by increasing the data voltage, or overdrive is achieved through grayscale compensation, so that the terminal display screen quickly reaches the target brightness. However, the related art cannot achieve effective overdrive compensation for the highest grayscale (grayscale with a grayscale value of 255) and the lowest grayscale (grayscale with a grayscale value of 0), and the corresponding ghosting cannot be improved. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a display driving method, a display driving device, an electronic device and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a display driving method is provided, comprising: determining a first backlight brightness, the first backlight brightness being the current backlight brightness of a screen, and determining a first grayscale of each pixel in a next frame of the screen to be displayed and a second grayscale of each pixel in a current frame of the screen to be displayed; determining a first mapped grayscale value corresponding to the first grayscale based on a correspondence between grayscale values ​​and mapped grayscale values ​​in the next frame of the screen to be displayed; determining a second backlight brightness corresponding to the first mapped grayscale value according to the first grayscale and a correspondence between grayscale values ​​and backlight brightness at equal display brightness, and determining a second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence; determining a grayscale change parameter for changing from the second mapped grayscale value to the first mapped grayscale value; determining grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and performing grayscale compensation on the second grayscale according to the grayscale compensation data, so as to display the screen at the first grayscale in the next frame.

[0006] In one embodiment, the correspondence between grayscale values ​​and backlight brightness is different at different display brightnesses; determining the second backlight brightness corresponding to the first mapped grayscale value according to the first grayscale and the correspondence between grayscale values ​​and backlight brightness at the same display brightness, and determining the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence, includes: determining the first display brightness of the first backlight brightness at the first grayscale, and determining the second display brightness of the first backlight brightness at the second grayscale; determining the second backlight brightness corresponding to the first mapped grayscale value according to the correspondence between grayscale values ​​and backlight brightness at the first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value; determining the second mapped grayscale value corresponding to the second backlight brightness according to the correspondence between grayscale values ​​and backlight brightness at the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness.

[0007] In one implementation, the magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is less than the second grayscale.

[0008] In one embodiment, the correspondence between the grayscale value and the backlight brightness is determined in the following manner: different display brightnesses corresponding to pixels of different grayscales under different backlight brightnesses of the screen are obtained; for the different display brightnesses, the correspondence between the grayscale value of the pixel and the backlight brightness is obtained respectively; and the set of correspondences between the grayscale value of the pixel and the backlight brightness under the different display brightnesses is determined as the correspondence between the grayscale value and the backlight brightness.

[0009] In one embodiment, the grayscale compensation data is determined according to the second backlight brightness and the grayscale change parameter, and the second grayscale is compensated according to the grayscale compensation data, including: determining the correspondence between the grayscale change parameter corresponding to the second backlight brightness and the grayscale compensation data; determining the grayscale compensation data corresponding to the grayscale change parameter according to the correspondence between the grayscale change parameter and the grayscale compensation data.

[0010] According to a third aspect of an embodiment of the present disclosure, a display driving device is provided, comprising: a determination unit, configured to determine a first backlight brightness, the first backlight brightness being the current backlight brightness of a screen, and to determine a first grayscale of each pixel in a next frame of the screen to be displayed and a second grayscale of each pixel in a current frame of the screen display; a processing unit, configured to determine a first mapped grayscale value corresponding to the first grayscale based on a correspondence between grayscale values ​​and mapped grayscale values ​​in the next frame of the screen to be displayed, determine a second backlight brightness corresponding to the first mapped grayscale value according to a correspondence between the first grayscale, grayscale values ​​and backlight brightness at equal display brightness, determine a second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence, and determine a grayscale change parameter for changing the second mapped grayscale value to the first mapped grayscale value; a compensation unit, configured to determine grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and perform grayscale compensation on the second grayscale according to the grayscale compensation data, so as to display the screen at the first grayscale in the next frame.

[0011] In one embodiment, the correspondence between the grayscale value and the backlight brightness is different under different display brightness; the processing unit determines the second backlight brightness corresponding to the first mapped grayscale value according to the first grayscale and the correspondence between the grayscale value and the backlight brightness under the same display brightness, and determines the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence in the following manner: determine the first display brightness of the first backlight brightness at the first grayscale, and determine the second display brightness of the first backlight brightness at the second grayscale; determine the second backlight brightness corresponding to the first mapped grayscale value according to the correspondence between the grayscale value and the backlight brightness under the first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value; determine the second mapped grayscale value corresponding to the second backlight brightness according to the correspondence between the grayscale value and the backlight brightness under the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness.

[0012] In one implementation, the magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is less than the second grayscale.

[0013] In one embodiment, the correspondence between the grayscale value and the backlight brightness is determined by a processing unit in the following manner: different display brightnesses corresponding to pixels of different grayscales under different backlight brightnesses of the screen are obtained; for the different display brightnesses, the correspondence between the grayscale value of the pixel and the backlight brightness is obtained respectively; and a set of correspondences between the grayscale value of the pixel and the backlight brightness under the different display brightnesses is determined as the correspondence between the grayscale value and the backlight brightness.

[0014] In one embodiment, the compensation unit determines grayscale compensation data based on the second backlight brightness and the grayscale change parameter, and performs grayscale compensation on the second grayscale based on the grayscale compensation data: determines the correspondence between the grayscale change parameter corresponding to the second backlight brightness and the grayscale compensation data; determines the grayscale compensation data corresponding to the grayscale change parameter based on the correspondence between the grayscale change parameter and the grayscale compensation data.

[0015] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing processor executable instructions; wherein the processor is configured to: execute the display driving method described in any one of the implementations of the first aspect or the second aspect.

[0016] According to a fourth aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the display driving method described in the first aspect or any one of the embodiments of the first aspect.

[0017] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: when the display screen of the terminal screen continues to change, the current backlight brightness of the screen, the grayscale value of the next frame to be displayed of each pixel in the screen, and the grayscale value of the current frame of each pixel in the screen are determined. According to the correspondence between the grayscale value and the mapped grayscale value, the first mapped grayscale value corresponding to the grayscale value of the next frame to be displayed is determined, and the mapped backlight brightness corresponding to the first mapped grayscale value is determined according to the correspondence between the pixel grayscale value and the screen backlight brightness at the same display brightness, and the second mapped grayscale value corresponding to the grayscale value of the current frame under the mapped backlight brightness is determined, and the grayscale compensation parameters are determined according to the first mapped grayscale value and the second mapped grayscale value, and the pixel is grayscale compensated to display the current picture. Through the present disclosure, through the correspondence between grayscale values ​​and mapped grayscale values, the highest grayscale and the lowest grayscale can be mapped to grayscale values ​​that are convenient for grayscale compensation, thereby solving the problems of the highest grayscale being unable to be compensated and the high grayscale compensation being insufficient, the lowest grayscale being unable to be compensated and the low grayscale compensation being insufficient, thereby effectively improving ghosting.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1is a schematic diagram showing the principle of the sample-and-hold effect according to an exemplary embodiment of the present disclosure

[0021] Figure 2 The figure is a flow chart of a display driving method according to an exemplary embodiment.

[0022] Figure 3 The present invention is a flowchart showing a method for determining a second backlight brightness and a second mapping grayscale value according to a corresponding relationship between a grayscale value and a backlight brightness at equal display brightness according to an exemplary embodiment.

[0023] Figure 4 The invention is a flow chart showing a method for determining a corresponding relationship between a grayscale value and backlight brightness according to an exemplary embodiment.

[0024] Figure 5 is a flowchart of a method for determining grayscale compensation data according to an exemplary embodiment.

[0025] Figure 6 is a block diagram showing overdrive compensation according to an exemplary embodiment of the present disclosure.

[0026] Figure 7 The diagram is a schematic diagram of a table for grayscale compensation, showing a correspondence between grayscale variation parameters and grayscale compensation data according to an exemplary embodiment of the present disclosure.

[0027] Figure 8 is a flow chart of a display driving method according to an exemplary embodiment of the present disclosure.

[0028] Fig. 9 is a block diagram of a display driving device according to an exemplary embodiment.

[0029] Fig.10 The invention is a block diagram of a device for display driving according to an exemplary embodiment. DETAILED DESCRIPTION

[0030] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0031] The screen driving method provided by the embodiment of the present disclosure is applied to the scenario of performing grayscale supplementation when a terminal display screen changes.

[0032] The time required between the signal input and the actual image output of the display screen is the response time of the screen, and the interval time between two signal inputs of the display screen is the refresh time. When the response time of the display screen is greater than the refresh time, the signal of the new frame has been input before the previous frame of the display is rendered, resulting in insufficient response brightness of the first frame after the screen switch, which in turn causes the display screen to produce ghosting. For example, the refresh time of a screen with a refresh rate of 144Hz is 6.94ms (1000ms / 144). When the response time of the display screen is less than 6.94ms, there will be no ghosting. On the contrary, if the response time of the display screen is greater than 6.94ms, there will be ghosting. When the response time of the display screen is less than the refresh time, the faster the screen display content changes (such as high-speed motion images), the more serious the ghosting phenomenon is.

[0033] In addition, the sampling and holding effect of the display screen will also cause the screen display to produce ghosting. Sampling and holding means that during each refresh cycle, the display will sample and hold the voltage value of each pixel in order to update the color of the pixel in the next refresh cycle. The purpose of sampling and holding is to avoid flickering or blurring of the image during the refresh process. During the sampling and holding period, the voltage value of the pixel is held in the sampling and holding capacitor until the next refresh cycle begins, when the capacitor is recharged to update the color of the pixel. However, if Figure 1 As shown in the schematic diagram of the principle of the sampling and holding effect, a sampling and holding time that is too long or too short may cause problems in the display of the screen. The motion path of a real object is continuous, and the object moves smoothly within the motion path, while the object movement displayed on the monitor is displayed frame by frame, rather than smooth and continuous movement. The human eye will follow the moving object, which causes a smearing phenomenon in the eyes, and only the screen display has a ghosting effect.

[0034] In the related art, overdrive technology is usually used to eliminate the ghosting of the display screen. The grayscale change of the pixel before and after the display screen is switched is determined, and the compensation voltage is determined in the drive compensation table based on the grayscale change. The drive circuit signal is increased based on the compensation voltage, and the response time of the limit switch is shortened, so that the image can quickly reach the target brightness in a shorter time, and the ghosting is solved or alleviated. In the related art, different grayscale compensation tables can also be set based on the positive and negative polarities of the display picture frame. When performing overdrive compensation, the grayscale compensation table to be used is determined based on the polarity of the display picture frame, and then the grayscale compensation is determined in the grayscale compensation table based on the grayscale change, and grayscale compensation is performed. The related art can effectively compensate for pixels within the general grayscale value range and reduce ghosting. However, the related art cannot perform overdrive compensation for the highest grayscale (255) and the lowest grayscale (0). The ghosting generated at the corresponding grayscale cannot be eliminated or improved by compensating for high grayscale (such as 250) and low grayscale (such as 5).

[0035] In view of this, the present disclosure proposes a display driving method, which determines the current backlight brightness of the screen and the change parameters of each pixel in the screen when the pixels of the terminal screen are subjected to grayscale compensation. According to the correspondence between the backlight brightness and the pixel grayscale under the same display brightness, the mapped grayscale change parameters of the pixel under other mapped backlight brightness are determined. According to the mapped grayscale change parameters, the grayscale compensation data is determined, the pixel is subjected to grayscale compensation, and the current picture is displayed, so as to solve the problem that the highest grayscale cannot be compensated and the high grayscale compensation is not in place, and the lowest grayscale cannot be compensated and the low grayscale compensation is not in place, thereby effectively improving the ghosting.

[0036] Figure 2 FIG. 1 is a flow chart of a display driving method according to an exemplary embodiment. Figure 2 As shown, the method includes steps S101 to S105.

[0037] In step S101, the first backlight brightness is determined, and the first grayscale of each pixel in the next frame to be displayed on the screen and the second grayscale of each pixel in the current frame display are determined.

[0038] The first backlight brightness is the current backlight brightness of the screen.

[0039] In the embodiment of the present disclosure, the first grayscale is the target display grayscale of each pixel in the picture to be displayed on the screen based on the received image signal, and the second grayscale is the actual grayscale of each pixel in the picture displayed on the screen. Based on the grayscale change between the first grayscale and the second grayscale, the grayscale compensation data of the first grayscale used to change the second grayscale can be determined.

[0040] In step S102 , based on the correspondence between the grayscale values ​​and the mapped grayscale values ​​in the next frame to be displayed, a first mapped grayscale value corresponding to the first grayscale is determined.

[0041] In the disclosed embodiment, the grayscale value (first grayscale) of the pixel in the next frame to be displayed is the target display grayscale, and the grayscale (second grayscale) of the pixel in the current frame needs to be grayscale compensated so that the grayscale of the pixel in the current frame can reach the target display grayscale of the next frame. In some cases, the target display grayscale value cannot be fully compensated, resulting in a ghosting when the display screen displays the picture. In this scenario, it is necessary to map the target display grayscale value to other grayscale values ​​that are easy to compensate according to a pre-set grayscale mapping relationship. In one example, the pixel grayscale changes from a low grayscale to a high grayscale, and the target display grayscale is 255. The highest grayscale 255 cannot be effectively compensated. Based on the mapping relationship, the grayscale 255 is mapped to the grayscale 240, and grayscale compensation is performed based on the mapped grayscale 240.

[0042] In step S103, the second backlight brightness corresponding to the first mapped grayscale value is determined according to the first grayscale and the correspondence between the grayscale value and the backlight brightness at equal display brightness, and the second mapped grayscale value corresponding to the second backlight brightness is determined according to the second grayscale and the correspondence.

[0043] In the embodiment of the present disclosure, the display brightness of the pixel is jointly determined by the grayscale of the pixel and the backlight brightness of the screen. According to the corresponding relationship between the grayscale value and the backlight brightness, after determining the first mapped grayscale, the second backlight brightness corresponding to the first mapped grayscale can be determined, and the display brightness of the first backlight brightness at the first grayscale is the same as the brightness of the second backlight brightness at the first mapped grayscale. It can be understood that when determining the grayscale compensation parameters, it is necessary to determine based on the current frame grayscale and the next frame target grayscale at the same backlight brightness. Based on this, the present disclosure also determines the second mapped grayscale corresponding to the grayscale at the second backlight brightness, wherein the display brightness of the first backlight brightness at the second grayscale is the same as the brightness of the second backlight brightness at the second mapped grayscale.

[0044] In step S104 , a grayscale change parameter for changing from the second mapped grayscale value to the first mapped grayscale value is determined.

[0045] In step S105 , grayscale compensation data is determined according to the second backlight brightness and the grayscale variation parameter, and grayscale compensation is performed on the second grayscale according to the grayscale compensation data, so as to display the image at the first grayscale in the next frame.

[0046] In the disclosed embodiment, the screen backlight brightness is the fixed brightness of the terminal screen without passing through the pixel, and the display brightness is the brightness of the screen display observed by the user after the backlight brightness passes through the pixel. It can be understood that for the same backlight brightness, under the premise that the screen backlight brightness is fixed, the display brightness is affected by the grayscale value of the pixel. The lower the grayscale value, the darker the pixel display color, the higher the shielding degree of the backlight brightness, and the lower the display brightness after the backlight brightness passes through the pixel. Based on this, by synchronously adjusting the grayscale of the pixel and the corresponding backlight brightness (such as increasing the grayscale while reducing the backlight brightness, or reducing the grayscale while increasing the backlight brightness), the display brightness can be maintained constant and have the same display effect. Based on the correspondence between the backlight brightness and the pixel grayscale at the same backlight brightness, the present disclosure can obtain the mapping grayscale (such as the grayscale value is 235) at the mapping brightness, i.e. the second backlight brightness (such as 3nit), through the above correspondence, under the premise of ensuring that the display brightness (such as 2nit) remains unchanged, when the pixel grayscale (such as the grayscale value is 255) at the current backlight brightness, i.e. the first backlight brightness (such as 2nit) cannot be effectively compensated. Based on the above correspondence between the pixel grayscale and the backlight brightness at the same display brightness, the present disclosure can adjust the grayscale and pixels of the grayscale (second grayscale) displayed in the current frame and the grayscale to be displayed in the next frame of all pixels in the display screen, map the change of grayscale at the current backlight brightness to the change of grayscale at other backlight brightness, and then determine the accurate grayscale compensation data according to the grayscale change parameters after pixel mapping, so that the grayscale of the screen pixels is fully compensated, ensuring the effective elimination of the screen display's ghosting.

[0047] It can be understood that the display brightness of the pixel is affected by the synchronization of the pixel grayscale of the backlight brightness. In the present disclosure, the display brightness of the first backlight brightness at the first grayscale is not the same as the display brightness of the first backlight brightness at the second grayscale. Based on the difference in the corresponding display brightness of the first grayscale and the second grayscale, different corresponding relationships between grayscale and backlight brightness are required to determine the second backlight brightness and the second mapping grayscale.

[0048] Figure 3 FIG. 1 is a flow chart showing a method for determining a second backlight brightness and a second mapped grayscale value according to a corresponding relationship between a grayscale value and a backlight brightness at equal display brightness according to an exemplary embodiment. Figure 3 As shown, the method includes steps S201 to S203.

[0049] In step S201 , a first display brightness of a first backlight brightness at a first grayscale is determined, and a second display brightness of the first backlight brightness at a second grayscale is determined.

[0050] In step S202, a second backlight brightness corresponding to the first mapped grayscale value is determined according to the correspondence between the grayscale value and the backlight brightness at the first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value.

[0051] In step S203, a second mapped grayscale value corresponding to the second backlight brightness is determined according to the correspondence between the grayscale value and the backlight brightness at the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness.

[0052] In the embodiment of the present disclosure, the first display brightness of the first backlight brightness at the first grayscale and the second display brightness of the first backlight brightness at the second grayscale are determined respectively, and then the corresponding relationship between the grayscale and the backlight brightness at the first display brightness and the corresponding relationship between the grayscale and the backlight brightness at the second display brightness are determined. Based on the corresponding relationship between the grayscale corresponding to the first display brightness and the backlight brightness, the second backlight brightness corresponding to the first mapped grayscale value is determined under the premise of maintaining the first display brightness, and then based on the corresponding relationship between the grayscale corresponding to the second display brightness and the backlight brightness, the second mapped grayscale corresponding to the second backlight brightness is determined under the premise of maintaining the second display brightness.

[0053] In the disclosed embodiment, for each pixel in the display screen, the grayscale value of the next frame and the grayscale value of the current frame are mapped to the grayscale value under different backlight brightness. Under the premise of maintaining the display brightness as B1, the grayscale value G1 of the backlight brightness A1 is mapped to the grayscale value G2 under the backlight brightness A2, wherein there is a preset mapping relationship between the grayscale value G1 and the grayscale value G2, and the mapping of the backlight brightness A1 to the backlight brightness A2 is performed after the grayscale value G1 is mapped to the grayscale value G2. This mapping method can be used for all brightnesses, from the mapping under the backlight brightness corresponding to a grayscale under the same display brightness to the backlight brightness corresponding to another grayscale.

[0054] In the disclosed embodiment, the grayscale value of the current frame and the grayscale value of the next frame of the pixel are synchronously mapped to obtain the mapped grayscale values, respectively, and then the accurate mapping grayscale change parameter, i.e., the second grayscale change parameter, is determined to ensure accurate grayscale compensation data.

[0055] It can be understood that the grayscale change parameter represents the change relationship between the grayscale of the pixel in the current frame and the grayscale of the next frame. Therefore, for each pixel in the display screen, when performing backlight brightness mapping and grayscale mapping according to the corresponding relationship, it is necessary to synchronously map the grayscale value of the pixel in the current frame and the grayscale value of the next frame, respectively obtain the mapped grayscale values, and then determine the mapped grayscale change parameter, that is, the second grayscale change parameter.

[0056] It is understandable that when the grayscale changes, there are two possibilities: a low grayscale changes to a high grayscale and a high grayscale changes to a low grayscale. Based on the different trends of the grayscale change, there are two size relationships between the grayscale of the current frame and the grayscale of the next frame of the pixel. The following embodiments of the present disclosure illustrate the size relationship between the first grayscale and the second grayscale.

[0057] In one implementation manner of the disclosed embodiment, the magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is smaller than the second grayscale.

[0058] In the disclosed embodiment, under the premise of ensuring that the display brightness of the pixel is constant, the backlight brightness is inversely proportional to the pixel grayscale. Based on this, when the grayscale value of the pixel changes from low to high, in order to ensure that the highest grayscale pixel is effectively compensated, a higher second brightness needs to be determined, thereby mapping to obtain a lower pixel grayscale value, such as (display brightness 2nit, first backlight brightness 2nit, pixel grayscale 255) is mapped to (display brightness 2nit, second backlight brightness 3nit, pixel grayscale 235). Similarly, when the grayscale value of the pixel changes from high to low, in order to ensure that the lowest grayscale pixel is effectively compensated, a lower second brightness needs to be determined, thereby mapping to obtain a higher pixel grayscale value, such as (display brightness 0.2nit, first backlight brightness 3nit, pixel grayscale 0) is mapped to (display brightness 0.2nit, second backlight brightness 2nit, pixel grayscale 5).

[0059] In the embodiment of the present disclosure, different mapping backlight brightness, i.e., the second backlight brightness determination strategy, is used for the grayscale change of pixels from low to high and from high to low, respectively, to ensure that both the pixels with the lowest grayscale value and the pixels with the highest grayscale value can be mapped to obtain mapping grayscale values ​​that are convenient for determining grayscale change parameters, thereby obtaining accurate grayscale compensation data, achieving effective grayscale compensation for pixels, and ensuring the effect of eliminating ghosting.

[0060] In the embodiments of the present disclosure, the correspondence between the grayscale value of a pixel and the backlight brightness at different display brightnesses is a predetermined correspondence, including all backlight brightness and grayscale value combinations and corresponding display brightnesses. The following embodiments of the present disclosure use the following method to obtain the correspondence between the grayscale value of a pixel and the backlight brightness at different display brightnesses.

[0061] Figure 4 FIG. 1 is a flow chart showing a method for determining a corresponding relationship between a grayscale value and backlight brightness according to an exemplary embodiment. Figure 4 As shown, the method includes steps S301 to S303.

[0062] In step S301, different display brightnesses corresponding to pixels of different grayscales under different backlight brightness of the screen are obtained.

[0063] In step S302, for different display brightnesses, the corresponding relationship between the grayscale value of the pixel and the backlight brightness is obtained respectively.

[0064] In step S303, a set of correspondences between the grayscale values ​​of pixels at different display brightness and the backlight brightness is determined as a correspondence between the grayscale value and the backlight brightness.

[0065] In the disclosed embodiment, the brightness values ​​corresponding to grayscale 0 to 255 under different backlight brightness of the display panel are obtained through testing and calculation. In one example, the brightness range of the backlight brightness is (0, n), and for the backlight brightness A1, the display brightness B1-1, B1-2...B1-255 corresponding to the grayscale 0 to 255 is determined. For the backlight brightness A2, the display brightness B2-1, B2-2...B2-255 corresponding to the grayscale 0 to 255 is determined, and the processing flow is executed for each backlight brightness until the processing flow of the highest backlight brightness is completed, that is, for the backlight brightness An, the display brightness Bn-1, Bn-2...Bn-255 corresponding to the grayscale 0 to 255 is determined. Further, the correspondence between the backlight brightness and the grayscale under the same display brightness is determined. For example, if the display brightness is B2-255=B1-235=…=BX-Y=0.2nit, the correspondence between the backlight brightness and the grayscale is (2,255), (1,235), …, (X, Y). The above determination of the correspondence between the backlight brightness and the grayscale is performed for each display brightness.

[0066] It is understandable that, due to the large backlight brightness range of the display screen [such as: (0nit, 700nit)], the process of obtaining the correspondence between the backlight brightness and the grayscale for each backlight brightness is too complicated, and the backlight of the display screen can be described using more detailed parameters (such as 0.2nit, 0.5nit, etc.). Therefore, when determining the correspondence between the backlight brightness and the grayscale, a fixed value point can be set (such as setting a value point every 10nit), and only the correspondence between the backlight brightness and the grayscale corresponding to the value point is obtained. When performing grayscale compensation, after determining the backlight brightness, the value range of the backlight brightness can be determined. Based on the correspondence between the backlight brightness and the grayscale of different value points corresponding to the value range, the correspondence between the backlight brightness and the grayscale under the determined backlight brightness is determined by the difference method, and then the backlight brightness and grayscale mapping, grayscale change parameter determination and grayscale compensation data determination and other processes are performed, thereby completing grayscale compensation and eliminating screen drag.

[0067] It is understandable that the display screen has different corresponding relationships between grayscale variation parameters and grayscale compensation data under different backlight brightness. The following embodiments of the present disclosure illustrate a method for determining grayscale compensation data.

[0068] Figure 5FIG. 1 is a flow chart showing a method for determining grayscale compensation data according to an exemplary embodiment. Figure 6 As shown, the method includes step S401 to step S402.

[0069] In step S401, a corresponding relationship between a grayscale variation parameter corresponding to the second backlight brightness and grayscale compensation data is determined.

[0070] In step S402, grayscale compensation data corresponding to the grayscale variation parameter is determined according to the corresponding relationship between the grayscale variation parameter and the grayscale compensation data.

[0071] In the disclosed embodiment, after the mapping is completed, overdrive compensation is performed to determine the correspondence between the grayscale change parameter corresponding to the mapped backlight brightness and the grayscale compensation data. For each pixel point in the display screen, according to the grayscale Gb of the current frame and the grayscale Gc of the next frame of the target pixel point, the corresponding overdrive compensation grayscale Go is found in the overdrive compensation lookup table, and the overdriven image information is input into the display panel for display.

[0072] In the present disclosure, Figure 6 The block diagram of overdrive compensation is shown in Figure 2. Figure 7 The corresponding relationship between the grayscale change parameters and the grayscale compensation data can be stored in a table form. When determining the grayscale compensation data according to the grayscale change parameters, the grayscale compensation data (overdrive compensation grayscale, such as G) is determined by looking up the table (or drive lookup table) for grayscale compensation according to the grayscale value of the sub-pixel in the current frame (such as 2) and the grayscale value of the sub-pixel in the next frame (such as 250). 2,250 ), after the compensation is completed, the corresponding picture is displayed on the display screen / panel.

[0073] The driving display method proposed in the embodiment of the present disclosure can also reduce the dynamic response time (moving picture response time, MPRT) when the display screen displays an image. The dynamic response time is an evaluation parameter obtained by shooting and calculating the smear of the moving image. Reducing the dynamic response time can be solved in two ways, namely increasing the first frame response degree and increasing the refresh rate. The overdrive compensation in the present disclosure can increase the first frame response degree, thereby reducing the dynamic response time. The first frame response degree refers to the response brightness L1 of the first frame in which the grayscale of a pixel point changes from a certain value G1 to another value G2, compared with the target brightness L2 of G2, and L1 / L2. In an example, the refresh rate of the display screen is 60Hz, and the conventional overdrive compensation method has a smear dynamic response time of 255 grayscales of 26ms. Through the method proposed in the present disclosure, the dynamic response time of 255 grayscales can be reduced to 14ms, effectively improving the smear.

[0074] In the present disclosure, Figure 8 As shown in the flowchart of the display driving method in , the present disclosure adopts the following method to perform pixel grayscale compensation, pre-test and calculate the display brightness values ​​of different grayscales under different backlight brightness of the display panel, and obtain the corresponding relationship between the backlight brightness and the pixel grayscale under the same display brightness value. When performing grayscale compensation, the grayscale value of the sub-pixel of the current frame and the grayscale value of the sub-pixel of the next frame are obtained respectively, and the mapping grayscale value corresponding to the grayscale value of the sub-pixel of the next frame is obtained based on the preset mapping relationship, and the mapping backlight brightness is determined based on the corresponding relationship between the grayscale and the backlight brightness under the same display brightness. Correspondingly, the mapping grayscale corresponding to the grayscale of the current frame is determined based on the corresponding relationship between the grayscale and the backlight brightness under the same display brightness. According to the mapped backlight brightness, the corresponding driving compensation table is determined, and according to the mapped grayscale value of the sub-pixel of the current frame and the grayscale value of the sub-pixel of the next frame, the corresponding grayscale compensation data (overdrive grayscale) is obtained in the driving compensation lookup table, and the grayscale compensation data is input into the display screen / panel to display the picture after grayscale compensation. Through the present disclosure, through the correspondence between grayscale values ​​and mapped grayscale values, the highest grayscale and the lowest grayscale can be mapped to grayscale values ​​that are convenient for grayscale compensation, thereby solving the problems of the highest grayscale being unable to be compensated and the high grayscale compensation being insufficient, the lowest grayscale being unable to be compensated and the low grayscale compensation being insufficient, thereby effectively improving ghosting and reducing the dynamic response time when the display screen displays images.

[0075] Based on the same concept, the embodiment of the present disclosure further provides a display driving device 100 .

[0076] It is understandable that the display driver device 100 provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0077] Fig. 9 1 is a block diagram of a display driving device 100 according to an exemplary embodiment. Fig.10 The device includes a determining unit 101, a processing unit 102 and a compensating unit 103.

[0078] The determination unit 101 is used to determine a first backlight brightness, which is the current backlight brightness of the screen, and determine a first grayscale of each pixel in a next frame to be displayed on the screen and a second grayscale of each pixel in a current frame display.

[0079] The processing unit 102 is used to determine the first mapped grayscale value corresponding to the first grayscale based on the correspondence between the grayscale value and the mapped grayscale value in the next frame to be displayed, determine the second backlight brightness corresponding to the first mapped grayscale value according to the correspondence between the first grayscale and the grayscale value and the backlight brightness at equal display brightness, determine the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence, and determine the grayscale change parameter from the second mapped grayscale value to the first mapped grayscale value.

[0080] The compensation unit 103 is used to determine grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and perform grayscale compensation on the second grayscale according to the grayscale compensation data, so as to display the picture with the first grayscale in the next frame.

[0081] In one embodiment, the correspondence between the grayscale value and the backlight brightness is different under different display brightness. The processing unit 102 determines the second backlight brightness corresponding to the first mapped grayscale value according to the correspondence between the grayscale value and the backlight brightness under the first grayscale and equal display brightness, and determines the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and equal correspondence in the following manner: determine the first display brightness of the first backlight brightness under the first grayscale, and determine the second display brightness of the first backlight brightness under the second grayscale. According to the correspondence between the grayscale value and the backlight brightness under the first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value, determine the second backlight brightness corresponding to the first mapped grayscale value. According to the correspondence between the grayscale value and the backlight brightness under the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness, determine the second mapped grayscale value corresponding to the second backlight brightness.

[0082] In one implementation, the magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is smaller than the second grayscale.

[0083] In one embodiment, the correspondence between the grayscale value and the backlight brightness is determined by the processing unit 102 in the following manner: different display brightnesses corresponding to pixels of different grayscales under different backlight brightnesses of the screen are obtained. For different display brightnesses, the correspondence between the grayscale value of the pixel and the backlight brightness is obtained respectively. The set of the correspondence between the grayscale value of the pixel and the backlight brightness under different display brightnesses is determined as the correspondence between the grayscale value and the backlight brightness.

[0084] In one embodiment, the compensation unit 103 determines grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and performs grayscale compensation on the second grayscale according to the grayscale compensation data: determining a correspondence between the grayscale change parameter corresponding to the second backlight brightness and the grayscale compensation data. According to the correspondence between the grayscale change parameter and the grayscale compensation data, determining the grayscale compensation data corresponding to the grayscale change parameter.

[0085] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0086] Fig.10 1 is a block diagram of a device 200 for display driving according to an exemplary embodiment. The device 200 may be provided as a terminal. For example, the device 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0087] Reference Fig.10 , the device 200 may include one or more of the following components: a processing component 202 , a memory 204 , a power component 206 , a multimedia component 208 , an audio component 210 , an input / output (I / O) interface 212 , a sensor component 214 , and a communication component 216 .

[0088] The processing component 202 generally controls the overall operation of the device 200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 202 may include one or more modules to facilitate interaction between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.

[0089] The memory 204 is configured to store various types of data to support operations on the device 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phone book data, messages, pictures, videos, etc. The memory 204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0090] The power component 206 provides power to the various components of the device 200. The power component 206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 200.

[0091] The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front camera and / or a rear camera. When the device 200 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0092] The audio component 210 is configured to output and / or input audio signals. For example, the audio component 210 includes a microphone (MIC), and when the device 200 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 204 or sent via the communication component 216. In some embodiments, the audio component 210 also includes a speaker for outputting audio signals.

[0093] I / O interface 212 provides an interface between processing component 202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0094] The sensor assembly 214 includes one or more sensors for providing various aspects of the status assessment of the device 200. For example, the sensor assembly 214 can detect the open / closed state of the device 200, the relative positioning of components, such as the display and keypad of the device 200, the sensor assembly 214 can also detect the position change of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration / deceleration of the device 200 and the temperature change of the device 200. The sensor assembly 214 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0095] The communication component 216 is configured to facilitate wired or wireless communication between the device 200 and other devices. The device 200 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0096] In an exemplary embodiment, the apparatus 200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

[0097] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 204 including instructions, and the instructions can be executed by the processor 220 of the device 200 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0098] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0099] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0100] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0101] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0102] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order or serial order shown, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0103] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present solution, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

[0104] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A display driving method, characterized in that: include: Determine a first backlight brightness, which is the current backlight brightness of the screen, and determine a first grayscale of each pixel in a next frame to be displayed on the screen and a second grayscale of each pixel in a current frame of displayed image; Determining a first mapped grayscale value corresponding to the first grayscale based on a correspondence between a grayscale value and a mapped grayscale value in a next frame to be displayed; Determine the second backlight brightness corresponding to the first mapped grayscale value according to the correspondence between the first grayscale, the grayscale value at equal display brightness, and the backlight brightness, and determine the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence; Determine a grayscale change parameter for changing the second mapped grayscale value to the first mapped grayscale value; Grayscale compensation data is determined according to the second backlight brightness and the grayscale change parameter, and grayscale compensation is performed on the second grayscale according to the grayscale compensation data, so as to display a picture with the first grayscale in the next frame.

2. The method according to claim 1, characterized in that: The corresponding relationship between grayscale value and backlight brightness is different at different display brightness; The determining, according to the first grayscale and the correspondence between the grayscale value and the backlight brightness at equal display brightness, the second backlight brightness corresponding to the first mapped grayscale value, and determining, according to the second grayscale and the correspondence, the second mapped grayscale value corresponding to the second backlight brightness, comprises: Determine a first display brightness of a first backlight brightness at the first grayscale, and determine a second display brightness of the first backlight brightness at the second grayscale; Determine a second backlight brightness corresponding to the first mapped grayscale value according to a correspondence between a grayscale value and a backlight brightness at a first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value; A second mapped grayscale value corresponding to the second backlight brightness is determined according to the correspondence between the grayscale value and the backlight brightness at the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness.

3. The method according to any one of claims 1 to 2, characterized in that: The magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is less than the second grayscale.

4. The method according to any one of claims 1 to 2, characterized in that The corresponding relationship between the grayscale value and the backlight brightness is determined in the following manner: Obtaining different display brightnesses corresponding to pixels of different grayscales under different backlight brightnesses of the screen; For the different display brightnesses, respectively obtaining the corresponding relationship between the grayscale value of the pixel and the backlight brightness; A set of correspondences between the grayscale values ​​of the pixels and the backlight brightness at the different display brightnesses is determined as the correspondence between the grayscale values ​​and the backlight brightness.

5. The method according to claim 1, characterized in that The step of determining grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and performing grayscale compensation on the second grayscale according to the grayscale compensation data includes: Determine a correspondence between a grayscale variation parameter corresponding to the second backlight brightness and grayscale compensation data; According to the corresponding relationship between the grayscale variation parameter and the grayscale compensation data, the grayscale compensation data corresponding to the grayscale variation parameter is determined.

6. A display driving device, characterized in that: include: A determination unit, configured to determine a first backlight brightness, which is the current backlight brightness of the screen, and to determine a first grayscale of each pixel in a next frame to be displayed on the screen and a second grayscale of each pixel in a current frame of displayed image; a processing unit, configured to determine a first mapped grayscale value corresponding to the first grayscale based on a correspondence between grayscale values ​​and mapped grayscale values ​​in a next frame to be displayed, determine a second backlight brightness corresponding to the first mapped grayscale value based on a correspondence between the first grayscale and grayscale values ​​and backlight brightness at equal display brightness, determine a second mapped grayscale value corresponding to the second backlight brightness based on the second grayscale and the correspondence, and determine a grayscale change parameter for changing the second mapped grayscale value to the first mapped grayscale value; A compensation unit is used to determine grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and perform grayscale compensation on the second grayscale according to the grayscale compensation data, so as to display the picture with the first grayscale in the next frame.

7. The device according to claim 6, characterized in that The corresponding relationship between grayscale value and backlight brightness is different at different display brightness; The processing unit determines the second backlight brightness corresponding to the first mapped grayscale value according to the first grayscale and the correspondence between the grayscale value and the backlight brightness at equal display brightness, and determines the second mapped grayscale value corresponding to the second backlight brightness according to the second grayscale and the correspondence in the following manner: Determine a first display brightness of a first backlight brightness at the first grayscale, and determine a second display brightness of the first backlight brightness at the second grayscale; Determine a second backlight brightness corresponding to the first mapped grayscale value according to a correspondence between a grayscale value and a backlight brightness at a first display brightness, the first grayscale, the first backlight brightness, and the first mapped grayscale value; A second mapped grayscale value corresponding to the second backlight brightness is determined according to the correspondence between the grayscale value and the backlight brightness at the second display brightness, the second grayscale, the second backlight brightness, and the second backlight brightness.

8. The device according to any one of claims 6 to 7, characterized in that: The magnitude relationship between the first grayscale and the second grayscale is that the first grayscale is greater than the second grayscale or the first grayscale is less than the second grayscale.

9. The device according to any one of claims 6 to 7, characterized in that: The corresponding relationship between the grayscale value and the backlight brightness is determined by the processing unit in the following manner: Obtaining different display brightnesses corresponding to pixels of different grayscales under different backlight brightnesses of the screen; For the different display brightnesses, respectively obtaining the corresponding relationship between the grayscale value of the pixel and the backlight brightness; A set of correspondences between the grayscale values ​​of the pixels and the backlight brightness at the different display brightnesses is determined as the correspondence between the grayscale values ​​and the backlight brightness.

10. The device according to claim 6, characterized in that The compensation unit determines grayscale compensation data according to the second backlight brightness and the grayscale change parameter, and performs grayscale compensation on the second grayscale according to the grayscale compensation data: Determine a correspondence between a grayscale variation parameter corresponding to the second backlight brightness and grayscale compensation data; According to the corresponding relationship between the grayscale variation parameter and the grayscale compensation data, the grayscale compensation data corresponding to the grayscale variation parameter is determined.

11. An electronic device, characterized in that: include: processor: a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the display driving method according to any one of claims 1 to 5.

12. A storage medium, characterized in that: The storage medium stores instructions, and when the instructions in the storage medium are executed by a processor, the processor is enabled to execute the display driving method according to any one of claims 1 to 5.

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