Driving method, display device and calculator storage medium

Abstract

The invention discloses a driving method, a display device and a calculator storage medium, and the driving method comprises the steps: responding to a condition that a next frame of picture displayed by a display panel is a heavy-load picture, and starting a power supply voltage to compensate a digital power supply voltage. Through the method, the response speed of digital power supply voltage compensation can be improved, and the standby power consumption of a compensation mechanism is reduced.

Description

Technical Field

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

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the current driving methods of OLED display products need to be improved. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a driving method, a driving method and a computer storage medium, which can improve the response speed of digital power supply voltage compensation and reduce the standby power consumption of the compensation mechanism.

[0005] To solve the above technical problems, a technical solution adopted in the present application is: to provide a driving method, the method comprising: in response to the next frame of the picture displayed by the display panel being a high-load picture, turning on the power supply voltage to compensate the digital power supply voltage.

[0006] The method further includes: determining the complexity of the next frame of the picture; and in response to the complexity being greater than a complexity threshold, determining that the next frame of the picture displayed by the display panel is a high-load picture.

[0007] When the complexity of the picture displayed by the display panel increases to be equal to the complexity threshold, the voltage drop of the digital power supply voltage of the display panel changes from being less than the voltage drop threshold to being greater than or equal to the voltage drop threshold.

[0008] The voltage drop threshold is in the range of 0.04V-0.06V.

[0009] The step of determining the complexity of the next frame includes: determining the complexity of the next frame according to the grayscale of the first sub-pixel in the next frame.

[0010] Among them, the step of determining the complexity of the next frame of the picture according to the grayscale of the first sub-pixel in the next frame of the picture includes: determining the target parameter of the first sub-pixel according to the grayscale of the first sub-pixel and the grayscale of the sub-pixels around the first sub-pixel, wherein the target parameter represents the grayscale difference between the first sub-pixel and the surrounding sub-pixels; determining the complexity of the next frame of the picture according to the target parameter of at least one of the first sub-pixels.

[0011] Among them, the step of determining the complexity of the next frame of the picture according to the target parameter of at least one of the first sub-pixels includes: summing the target parameter of at least one of the first sub-pixels to obtain the complexity of the next frame of the picture.

[0012] Among them, the step of determining the target parameter of the first sub-pixel based on the grayscale of the first sub-pixel and the grayscale of the sub-pixels around the first sub-pixel includes: determining at least one target pixel unit adjacent to the pixel unit where the first sub-pixel is located; determining the target parameter corresponding to the first sub-pixel based on the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units.

[0013] The second sub-pixel has the same luminous color as the first sub-pixel.

[0014] Among them, the step of determining the target parameter corresponding to the first sub-pixel based on the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units includes: respectively calculating the difference between the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units to obtain at least one grayscale difference corresponding to the first sub-pixel; for each of the grayscale differences corresponding to the first sub-pixel, generating a grayscale parameter corresponding to the first sub-pixel based on the grayscale difference; and summing at least one grayscale parameter corresponding to the first sub-pixel to obtain the target parameter corresponding to the first sub-pixel.

[0015] Among them, the step of generating the first target parameter corresponding to the first sub-pixel according to the grayscale difference includes: in response to the grayscale difference being greater than a grayscale difference threshold, setting the grayscale parameter corresponding to the first sub-pixel to a first parameter value, otherwise setting the grayscale parameter corresponding to the first sub-pixel to a second parameter value.

[0016] Among them, the first parameter value is 1, and the second parameter value is 0.

[0017] The method further includes: in response to a frame rate of the next frame displayed by the display panel being greater than or equal to a frame rate threshold, determining that the next frame displayed by the display panel is a high-load picture.

[0018] Among them, when the complexity of the picture displayed by the display panel is equal to the complexity threshold, when the display frame rate of the display panel is increased to be equal to the frame rate threshold, the voltage drop of the digital power supply voltage of the display panel changes from less than the voltage drop threshold to greater than or equal to the voltage drop threshold.

[0019] The method further includes: in response to the display area of ​​the next frame displayed by the display panel increasing from the first display area to greater than or equal to the second display area, determining that the next frame displayed by the display panel is a high-load picture.

[0020] The method further includes: when the complexity of the picture displayed by the display panel is equal to the complexity threshold, when the display area of ​​the next frame of the picture displayed by the display panel increases from the first display area to the second display area, the voltage drop of the digital power supply voltage of the display panel increases from less than the voltage drop threshold to greater than or equal to the voltage drop threshold.

[0021] To solve the above technical problems, another technical solution adopted in the present application is: providing a display device, including a processor, a memory and a communication circuit, the processor being coupled to the memory and the communication circuit respectively, the memory storing program data, and the processor implementing the steps in the method of any embodiment by executing the program data in the memory.

[0022] To solve the above technical problems, another technical solution adopted by the present application is: providing a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the steps in the method of any embodiment.

[0023] The beneficial effects of the present application are as follows: Different from the prior art, the driving method of the present application determines whether to start the compensation of the power supply voltage to the digital power supply voltage by pre-judging whether the next frame displayed by the display panel is a heavy load picture. When the next frame is determined to be a heavy load picture, the digital power supply voltage compensation is pre-enabled, the response speed is fast, the digital power supply voltage can be compensated in time, and the probability of screen noise caused by excessive voltage drop due to sudden heavy load pictures is reduced. On the other hand, since the power supply voltage can only be enabled to compensate the digital power supply voltage when the condition of the next frame being a heavy load picture is met, the digital power supply voltage is prevented from drawing current from the power supply voltage at any time, thereby effectively saving the logic power consumption of the driver chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a flow chart of an implementation method of the driving method of the present application;

[0025] Figure 2 It is a schematic diagram of the relationship between the voltage drop of the digital power supply and the complexity of the display screen;

[0026] Figure 3 yes Figure 1 A schematic flow chart of an implementation method of step S11;

[0027] Figure 4 yes Figure 3 A schematic flow chart of an implementation method of step S111;

[0028] Figure 5 is a schematic diagram of grayscale of some sub-pixels of the display panel of the present application;

[0029] Figure 6 is a flow chart of another implementation method of the driving method of the present application;

[0030] Figure 7 is a schematic structural diagram of an implementation method of a foldable display panel;

[0031] Figure 8 is a flow chart of another implementation method of the driving method of the present application;

[0032] Fig. 9 It is a schematic diagram of a framework of an implementation mode of a driving device of the present application;

[0033] Fig.10 It is a schematic diagram of a framework of an electronic device of the present application;

[0034] Fig.11 It is a schematic diagram of a framework of an implementation scheme of a computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0036] In the related art, the driver chip (DDIC) of the display panel mostly adopts a high-integration, integrated design, and each module has complex functions and multiple voltage requirements. In order to reduce the power consumption increased by the voltage conversion inside the driver chip and reduce the design area of ​​the driver chip, the required voltage supply method is mostly external. Among them, the digital power supply voltage (DVDD) is used for the digital circuit module, specifically for the decoding circuit and TCON circuit of MIPIDSI. The digital power supply voltage can be externally supplied or generated by the power supply voltage (VDDI) through the low-dropout linear regulator (LDO) inside the driver chip.

[0037] In the related technical solution, when the digital power supply voltage is insufficient in the external supply, the driver chip will turn on the voltage compensation function, and the power supply voltage will compensate the digital power supply voltage. Specifically, when the external digital power supply voltage is lower than the threshold, the driver chip directly draws current from the power supply voltage, and the external current is 0mA; when the external digital power supply voltage is insufficient, but still higher than the threshold, as the external supply voltage decreases, the current drawn by the driver chip from the power supply voltage gradually increases. That is, the relevant voltage compensation mechanism requires the compensation path to exist all the time. Even if the threshold for starting compensation is not reached, as long as the digital power supply voltage drops slightly, current will be drawn from the power supply voltage, thereby causing an increase in the logic power consumption of the driver chip. The inventor also found that the activation of the voltage compensation function in the related technology is based on the detection of the digital power supply voltage, that is, passive voltage compensation is performed after the current frame voltage is detected to be insufficient. This method has hysteresis, and the untimely response of voltage compensation will cause MIPI decoding errors and screen distortion problems.

[0038] In view of the above problems, the present application provides a driving method, which is performed by a driving chip of a display panel of a display device. The method includes:

[0039] In response to the next frame of picture displayed by the display panel being a heavy load picture, the power supply voltage is turned on to compensate the digital power supply voltage.

[0040] A heavy load screen can be understood as a screen that is overloaded due to various conditions, resulting in excessive voltage drop in the digital power supply. If the voltage compensation is not timely, MIPI decoding errors may occur, resulting in a distorted screen.

[0041] On the one hand, the present application determines whether to turn on the power supply voltage to compensate the digital power supply voltage by pre-judging whether the next frame displayed by the display panel is a heavy load picture. When the next frame is determined to be a heavy load picture, the digital power supply voltage compensation is turned on in advance, the response speed is fast, and the digital power supply voltage can be compensated in time, which reduces the screen noise problem caused by excessive voltage drop caused by sudden heavy load pictures. On the other hand, since the power supply voltage must be satisfied to compensate the digital power supply voltage only when the next frame is a heavy load picture, it avoids the digital power supply voltage from drawing current from the power supply voltage at any time, thereby effectively saving the logic power consumption of the driver chip.

[0042] The display screen of the display panel is overloaded due to various conditions. Specifically, conditions such as excessive complexity of the display screen, excessive display frame rate, and excessive changes in display resolution can all make the display screen a high-load screen. As long as any one of the above conditions is met, the display screen can be determined to be a high-load screen.

[0043] In some embodiments, it can be determined whether to start the compensation of the digital power supply voltage by the power supply voltage by judging whether the next frame displayed by the display panel is a complex picture. Figure 1 , Figure 1 It is a flow chart of an implementation method of the driving method of the present application.

[0044] The method comprises the following steps:

[0045] Step S11: Determine the complexity m of the next frame. Specifically, the complexity of a landscape image is greater than that of a pure color image, and the complexity of an image with dense light and dark alternations is greater than that of a pure grayscale image. The higher the complexity m of the displayed image, the higher the load of the image, and the greater the drop in the digital power supply voltage (i.e., the voltage drop Vdrop). Figure 2 shown.

[0046] Step S12: In response to the complexity m being greater than the complexity threshold k, determining that the next frame displayed by the display panel is a high-load picture. When the complexity m is less than the complexity threshold k, the next frame is not a high-load picture, and no voltage compensation is required subsequently, and the compensation circuit between the power supply voltage and the digital power supply voltage can remain closed.

[0047] The complexity threshold k can be determined in the debugging stage and stored in the driver chip. By comparing the determined complexity m of the next frame with the fixed complexity threshold k, it is determined whether the next frame is a high-load frame.

[0048] Specifically, the complexity threshold k can be determined by the following method: First, in the debugging stage of the display panel, the relationship between different complexities m and the digital power supply voltage drop Vdrop is tested to obtain Figure 2The curve shown in FIG. 1 is used to determine the complexity threshold k corresponding to the voltage drop threshold Vdrop_k. That is, when the complexity m of the display screen of the display panel increases to be equal to the complexity threshold k, the voltage drop Vdrop of the digital power supply voltage of the display panel changes from being less than the voltage drop threshold Vdrop_k to being greater than or equal to the voltage drop threshold Vdrop_k. Specifically, the voltage drop threshold Vdrop_k ranges from 0.04V to 0.06V (for example, 0.05V). It should be noted that the voltage drop threshold Vdrop_k can be determined according to the test situation, for example, Figure 2 The voltage drop Vdrop corresponding to the point where the slope of the curve changes the most is determined as the voltage drop threshold Vdrop_k.

[0049] Step S13: In response to the next frame displayed by the display panel being a high-load picture, the power supply voltage is turned on to compensate the digital power supply voltage. When the complexity m is greater than or equal to the complexity threshold k, the next frame is a high-load picture, and voltage compensation is required for the next frame. The compensation circuit between the power supply voltage and the digital power supply voltage is turned on to ensure the normal display of the next frame.

[0050] The complexity m of the display image can be determined according to parameters such as grayscale, brightness or chromaticity of the sub-pixel.

[0051] In some embodiments, step S11 includes: determining the complexity m of the next frame of the picture according to the grayscale of the first sub-pixel in the next frame of the picture. The sub-pixel in the next frame of the picture that participates in the complexity calculation is defined as the first sub-pixel, and the complexity m is determined according to the grayscale calculation of the first sub-pixel. The first sub-pixel may be any one or more target sub-pixels in the next frame of the picture.

[0052] See also Figure 3 , Figure 3 yes Figure 1 Schematic diagram of a flow chart of an implementation method of step S11 in FIG. Step S11 specifically includes the following steps:

[0053] Step S111: Determine the target parameter of the first sub-pixel according to the grayscale of the first sub-pixel and the grayscale of the sub-pixels around the first sub-pixel, wherein the target parameter represents the grayscale difference between the first sub-pixel and the surrounding sub-pixels. The grayscale range of the sub-pixel is 0-255. When the grayscale difference between a sub-pixel and the sub-pixels around it is large (for example, greater than or equal to 128), the target parameter of the first sub-pixel is large, indicating that the grayscale variation in the vicinity of the sub-pixel is large, making the complexity of the area where the first sub-pixel is located greater. The grayscale of the first sub-pixel can be greater than the grayscale of the surrounding sub-pixels, or it can be less than the grayscale of the surrounding sub-pixels. The first sub-pixel can calculate the grayscale difference with a sub-pixel around it, or it can calculate the grayscale difference with multiple sub-pixels around it, so as to obtain the target parameter corresponding to the sub-pixel.

[0054] Step S112: Determine the complexity m of the next frame of the picture according to the target parameter of at least one first sub-pixel. The target parameter of at least one first sub-pixel is summed to obtain the complexity m of the next frame of the picture. When the complexity m of the next frame of the picture is determined according to one first sub-pixel, the target parameter of the first sub-pixel is the complexity m; when the complexity m of the next frame of the picture is determined according to multiple first sub-pixels, the complexity m of the next frame of the picture is equal to the sum of the target parameters of all first sub-pixels. The more first sub-pixels participate in the calculation of complexity m, the more accurate the calculation of complexity m is. In a preferred embodiment, each sub-pixel in the display panel participates in the calculation of complexity m, and complexity m is equal to the sum of the target parameters of all sub-pixels in the display panel.

[0055] See also Figure 4 , Figure 4 yes Figure 3 Schematic diagram of a flow chart of an implementation method of step S111 in FIG. Step S111 specifically includes the following steps:

[0056] Step S1111: Determine at least one target pixel unit adjacent to the pixel unit where the first sub-pixel is located. The pixel units of the display panel are usually arranged in an array, and the target pixel unit may be any one or more pixel units located above, below, to the left or to the right of the pixel unit where the first sub-pixel is located, or any one or more pixel units located at the upper left, lower left, upper right or lower right.

[0057] Step S1112: Determine the target parameter corresponding to the first sub-pixel according to the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one target pixel unit. Optionally, the second sub-pixel has the same luminous color as the first sub-pixel. A pixel unit includes a plurality of sub-pixels, specifically including a red sub-pixel, a green sub-pixel, and a blue sub-pixel. For example, the grayscale difference between the first sub-pixel emitting red light and the second sub-pixel emitting red light of the adjacent target pixel unit is calculated to determine the target parameter corresponding to the first sub-pixel.

[0058] Specifically, the target parameters are calculated through the following steps:

[0059] A1: respectively calculating the grayscale difference between the first sub-pixel and the grayscale difference of the second sub-pixel in at least one target pixel unit to obtain at least one grayscale difference corresponding to the first sub-pixel.

[0060] A2: for at least one grayscale difference corresponding to the first sub-pixel, generate a grayscale parameter corresponding to the first sub-pixel according to the grayscale difference.

[0061] A3: performing a summation process on at least one grayscale parameter corresponding to the first sub-pixel to obtain a target parameter corresponding to the first sub-pixel.

[0062] Optionally, step A3 further specifically includes:

[0063] In response to the grayscale difference being greater than the grayscale difference threshold, the grayscale parameter corresponding to the first subpixel is set to a first parameter value, otherwise the grayscale parameter corresponding to the first subpixel is set to a second parameter value. Specifically, the first parameter value is 1 and the second parameter value is 0.

[0064] For ease of understanding, an example is provided to illustrate how to obtain the target parameter corresponding to the first sub-pixel:

[0065] See also Figure 5 , Figure 5 It is a schematic diagram of grayscale of some sub-pixels of the display panel of the present application. Figure 5 The first pixel unit P framed by the dotted line is the pixel unit where the first sub-pixel of the target parameter to be calculated is located, and there are 8 pixel units around the first pixel unit P. First, the four adjacent pixel units above, below, on the left and on the right of the first pixel unit P are determined as target pixel units. Then, the grayscale of the red sub-pixel R (i.e., the first sub-pixel) in the first pixel unit P is determined to be 0, and the grayscales of the red sub-pixels R (i.e., the second sub-pixels) in the four target pixel units are 0, 56, 128 and 255 respectively. The difference between the grayscale of the first sub-pixel and the grayscale of the four second sub-pixels is calculated respectively, and the four grayscale differences corresponding to the first sub-pixel are obtained to be 0, 56, 128 and 255 respectively. When the grayscale difference is greater than or equal to the grayscale difference threshold (for example, 128), the grayscale parameter is determined to be 1, and when the grayscale difference is less than the grayscale difference threshold, the grayscale parameter is determined to be 0, so that the four grayscale parameters corresponding to the first sub-pixel are 0, 0, 1 and 1 respectively. Finally, the four grayscale parameters are summed to obtain the target parameter corresponding to the first sub-pixel as 2. Since each pixel unit includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, the sub-pixels of each color are calculated separately, and the target parameters of the three first sub-pixels in the first pixel unit P are all 2. Finally, the target parameters of all sub-pixels in the display panel are summed to obtain the complexity m. If it is determined that the complexity of the next frame is m≥k, the power supply voltage is started to compensate the digital power supply voltage.

[0066] It should be noted that the number of grayscale parameters corresponding to a first sub-pixel can be any value from 1 to 8. For example, the grayscale parameters of the eight second sub-pixels adjacent to the first sub-pixel can be calculated respectively. The first parameter value and the second parameter value of the grayscale parameter can also be other values, not limited to 1 or 0, as long as they can characterize the grayscale difference. In addition, the grayscale difference threshold can be any value from 0 to 255, and is not specifically limited.

[0067] Under the same picture, different frame rates correspond to different loads. The higher the frame rate, the greater the load. Therefore, in other embodiments, it can be determined whether to start the power supply voltage to compensate the digital power supply voltage by judging whether the frame rate of the next frame displayed by the display panel is too high. Figure 6 , Figure 6 It is a flow chart of another implementation of the driving method of the present application.

[0068] The method comprises the following steps:

[0069] Step S21: In response to the frame rate of the next frame displayed by the display panel being greater than or equal to the frame rate threshold, it is determined that the next frame displayed by the display panel is a high-load picture. When the frame rate is less than the frame rate threshold, the next frame is a high-load picture, and voltage compensation is required for the next frame. The compensation circuit between the power supply voltage and the digital power supply voltage is turned on to ensure the normal display of the next frame.

[0070] The frame rate threshold may be determined in the debugging stage and stored in the driver chip. By comparing the determined frame rate of the next frame with the fixed frame rate threshold, it is determined whether the next frame is a high-load frame.

[0071] Specifically, the frame rate threshold can be determined in the following manner: when the complexity m of the display panel display picture is equal to the complexity threshold k, the relationship between different frame rates of the display panel and the digital power supply voltage drop Vdrop is tested. When the display frame rate of the display panel is increased to be equal to the frame rate threshold, the voltage drop Vdrop of the digital power supply voltage of the display panel changes from less than the voltage drop threshold Vdrop_k to greater than or equal to the voltage drop threshold Vdrop_k, thereby determining the frame rate threshold. Specifically, the voltage drop threshold Vdrop_k ranges from 0.04V to 0.06V (e.g., 0.05V).

[0072] To facilitate understanding, here is an example to illustrate how to determine the frame rate threshold:

[0073] During the debugging phase of the display panel, the voltage drop of the digital power supply voltage at the frame rates of 30Hz, 60Hz, 90Hz, and 120Hz under the same target screen is tested respectively, and the complexity m of the target screen is always equal to the complexity threshold k. When it is confirmed that the frame rate is greater than or equal to 90Hz, the voltage drop of the digital power supply voltage is greater than 0.05V, and the frame rate threshold is determined to be 90Hz. It should be noted that the tested frame rate can also be other values, which is not specifically limited in this application.

[0074] Step S22: In response to the next frame displayed by the display panel being a high-load picture, the power supply voltage is turned on to compensate the digital power supply voltage. When the frame rate is greater than or equal to the frame rate threshold, the next frame is determined to be a high-load picture, and voltage compensation is required for the next frame. The compensation circuit between the power supply voltage and the digital power supply voltage is turned on to ensure the normal display of the next frame. This step is the same as step S13 and will not be repeated here.

[0075] The resolution of some display panels changes during use, and the change in resolution causes an increase in load. Changes in the display area are one reason for the change in resolution, for example, see Figure 7 , Figure 7 It is a schematic diagram of the structure of an embodiment of a foldable display panel. The two-fold display panel 10 includes two sub-display areas (a first sub-display area A and a second sub-display area B), wherein the first sub-display area A having a larger or identical display area is defined as a first display area 101, and the sum of the two sub-display areas is defined as a second display area 102. The display area of ​​the display panel 10 in the folded state is the first display area 101, and the display area in the unfolded state is the second display area 102. When the display area of ​​the display panel increases from the first display area 101 to the second display area 102, the resolution of the display panel changes, resulting in an increase in the load. Therefore, in other embodiments, it can be determined whether to turn on the power supply voltage to compensate for the digital power supply voltage by judging whether the display area of ​​the display panel has increased too much. See. Figure 8 , Figure 8 It is a flow chart of another implementation of the driving method of the present application.

[0076] The method comprises the following steps:

[0077] Step S31: In response to the display area of ​​the display panel displaying the next frame of the picture increasing from the first display area to greater than or equal to the second display area, determining that the next frame of the picture displayed by the display panel is a high-load picture. Specifically, this step includes:

[0078] When the complexity of the picture displayed by the display panel is equal to the complexity threshold, when the display area of ​​the display panel displaying the next frame of the picture increases from the first display area to the second display area, the voltage drop of the digital power supply voltage of the display panel increases from less than the voltage drop threshold to greater than or equal to the voltage drop threshold.

[0079] For ease of understanding, here is an example to illustrate how to define the increase in display area:

[0080] During the debugging phase of the display panel, the display areas tested are the first display area and the second display area, respectively, and the voltage drop of the digital power supply voltage is equal to the complexity threshold k. When the display area is the first display area and the second display area, the voltage drop of the digital power supply voltage is not greater than 0.05V, then the next frame is not a high-load picture; when the display area is the second display area, the voltage drop of the digital power supply voltage is greater than 0.05V, then the next frame is determined to be a high-load picture. In other embodiments, the display panel may include more display areas, and the transformation of different display areas can determine whether the next frame is a high-load picture according to the above steps.

[0081] Step S32: In response to the next frame displayed by the display panel being a high-load picture, the power supply voltage is turned on to compensate the digital power supply voltage. When the display area increases from the first display area to the second display area or a larger display area, the next frame is determined to be a high-load picture, and voltage compensation is required for the next frame. The compensation circuit between the power supply voltage and the digital power supply voltage is turned on to ensure the normal display of the next frame. This step is the same as step S13 and will not be repeated here.

[0082] See also Fig. 9 , Fig. 9 1 is a schematic diagram of a framework of an embodiment of a driving device of the present application. The driving device 20 includes a judgment module 21 and an execution module 22. The judgment module 21 is used to judge whether the next frame displayed by the display panel is a large load picture. When the next frame is a large load picture, it outputs a permission signal that allows the power supply voltage to start compensation for the digital power supply voltage. The execution module 22 is used to receive the permission signal and start the compensation circuit between the power supply voltage and the digital power supply voltage.

[0083] See also Fig.10 , Fig.10 1 is a schematic diagram of a display device of an embodiment of the present application. In this embodiment, the display device 100 includes a memory 111, a processor 112, and a communication circuit 113. The processor 112 is coupled to the memory 111 and the communication circuit 113 respectively. The memory 111 stores program data. The processor 112 executes the program data in the memory to implement the driving method of the present application.

[0084] The processor 112 may also be referred to as a CPU (Central Processing Unit). The processor 112 may be an integrated circuit chip having signal processing capabilities. The processor 112 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. A general-purpose processor may be a microprocessor or the processor 112 may also be any conventional processor 112, etc.

[0085] See also Fig.11 , Fig.11 It is a schematic diagram of a framework of an implementation method of a computer-readable storage medium of the present application. The computer-readable storage medium 120 of the embodiment of the present application stores a program instruction 121, and the program instruction 121 implements the driving method provided by the present application when it is executed. Among them, the program instruction 121 can form a program file and be stored in the above-mentioned computer-readable storage medium 120 in the form of a software product, so that a computer device (which can be a personal computer, a server, or a network device, etc.) executes all or part of the steps of each implementation method of the present application. The aforementioned computer-readable storage medium 120 includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, or a terminal device such as a computer, a server, a mobile phone, and a tablet.

[0086] In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0087] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0088] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0089] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0090] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0091] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

[0092] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A driving method, characterized in that: The method comprises: In response to the next frame of picture displayed by the display panel being a heavy load picture, the power supply voltage is turned on to compensate the digital power supply voltage.

2. The driving method according to claim 1, characterized in that: The method further comprises: Determining the complexity of the next frame; In response to the complexity being greater than a complexity threshold, determining that the next frame displayed by the display panel is a high-load frame; Preferably, when the complexity of the picture displayed by the display panel increases to be equal to the complexity threshold, the voltage drop of the digital power supply voltage of the display panel changes from less than the voltage drop threshold to greater than or equal to the voltage drop threshold; Preferably, the voltage drop threshold is in the range of 0.04V-0.06V.

3. The driving method according to claim 2, characterized in that: The step of determining the complexity of the next frame includes: The complexity of the next frame of picture is determined according to the gray scale of the first sub-pixel in the next frame of picture.

4. The driving method according to claim 3, characterized in that: The step of determining the complexity of the next frame of picture according to the grayscale of the first sub-pixel in the next frame of picture includes: Determining a target parameter of the first sub-pixel according to the grayscale of the first sub-pixel and the grayscales of sub-pixels around the first sub-pixel, wherein the target parameter represents a grayscale difference between the first sub-pixel and surrounding sub-pixels; Determining the complexity of the next frame according to the target parameter of at least one of the first sub-pixels; Preferably, the step of determining the complexity of the next frame according to the target parameter of at least one of the first sub-pixels comprises: The target parameter of at least one of the first sub-pixels is summed to obtain the complexity of the next frame.

5. The driving method according to claim 4, characterized in that: The step of determining a target parameter of the first sub-pixel according to the grayscale of the first sub-pixel and the grayscales of sub-pixels around the first sub-pixel comprises: Determine at least one target pixel unit adjacent to the pixel unit where the first sub-pixel is located; Determining the target parameter corresponding to the first sub-pixel according to the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units; Preferably, the second sub-pixel has the same luminous color as the first sub-pixel; Preferably, the step of determining the target parameter corresponding to the first sub-pixel according to the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units comprises: respectively calculating the difference between the grayscale of the first sub-pixel and the grayscale of the second sub-pixel in at least one of the target pixel units to obtain at least one grayscale difference corresponding to the first sub-pixel; For each of the grayscale differences corresponding to the first sub-pixel, generating a grayscale parameter corresponding to the first sub-pixel according to the grayscale differences; Performing a summation process on at least one grayscale parameter corresponding to the first sub-pixel to obtain the target parameter corresponding to the first sub-pixel; Preferably, the step of generating a grayscale parameter corresponding to the first sub-pixel according to the grayscale difference includes: In response to the grayscale difference being greater than a grayscale difference threshold, setting the grayscale parameter corresponding to the first sub-pixel to a first parameter value; otherwise, setting the grayscale parameter corresponding to the first sub-pixel to a second parameter value; Preferably, the first parameter value is 1, and the second parameter value is 0.

6. The driving method according to claim 1, characterized in that: The method further comprises: In response to a frame rate of the next frame displayed by the display panel being greater than or equal to a frame rate threshold, determining that the next frame displayed by the display panel is a high-load picture; Preferably, when the complexity of the picture displayed by the display panel is equal to the complexity threshold, when the display frame rate of the display panel is increased to be equal to the frame rate threshold, the voltage drop of the digital power supply voltage of the display panel changes from less than the voltage drop threshold to greater than or equal to the voltage drop threshold.

7. The driving method according to claim 1, characterized in that: The method further comprises: In response to the display area of ​​the next frame of the picture displayed by the display panel increasing from the first display area to be greater than or equal to the second display area, it is determined that the next frame of the picture displayed by the display panel is a high-load picture.

8. The driving method according to claim 7, characterized in that: When the complexity of the picture displayed by the display panel is equal to the complexity threshold, when the display area of ​​the next frame of the picture displayed by the display panel increases from the first display area to the second display area, the voltage drop of the digital power supply voltage of the display panel increases from less than the voltage drop threshold to greater than or equal to the voltage drop threshold.

9. A display device, characterized in that: The display device includes a processor, a memory and a communication circuit, the processor is coupled to the memory and the communication circuit respectively, the memory stores program data, and the processor implements the steps in the method as described in any one of claims 1-8 by executing the program data in the memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the steps in the method according to any one of claims 1 to 8.

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