Display driving module, display driving method and display device

Abstract

The application provides a display driving module, a display driving method and a display device. The display driving method comprises: obtaining a to-be-displayed picture; determining whether the to-be-displayed picture is a heavy-load picture; and if the to-be-displayed picture is a heavy-load picture, reducing a gate driving voltage and / or a pixel driving voltage used for displaying the heavy-load picture. The application first determines the to-be-displayed picture, confirms whether the to-be-displayed picture is a heavy-load picture, and realizes targeted voltage adjustment of the heavy-load picture; then, by reducing the gate driving voltage and / or the pixel driving voltage used for displaying the heavy-load picture, the generation of a sharp peak voltage can be effectively avoided, so that the power consumption of the display device during the heavy-load picture is avoided from increasing, the risk of damage to the panel circuit is reduced, and the method for suppressing the generation of the sharp peak voltage is to reduce the gate driving voltage and / or the pixel driving voltage, without adding other circuits, such as a corner cutting circuit in the related art, which is conducive to cost control.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display driving module, a display driving method, and a display device. Background Technology

[0002] Display devices display images in two ways: light-load and heavy-load. When displaying heavy-load images, the voltage repeatedly jumps between high and low levels, and the rising / falling edges of the level transitions generate voltage spikes, leading to increased power consumption and potentially damaging the panel circuitry within the display device.

[0003] In response to this, while adding a chamfering circuit to the display device can effectively reduce the voltage level of the rising / falling edge of the level transition, the need for additional circuitry increases the overall cost of the display device, which is detrimental to cost control. Summary of the Invention

[0004] In view of this, this application provides a display driving module, a display driving method, and a display device, which can improve the problem of increased power consumption of the display device caused by peak voltage without adding additional circuitry.

[0005] The technical solution adopted in this application to solve the above-mentioned technical problems is as follows:

[0006] In a first aspect, embodiments of this application provide a display driving method, comprising:

[0007] Get the screen to be displayed;

[0008] Determine whether the screen to be displayed is a reloaded screen;

[0009] If the screen to be displayed is the overloaded screen, reduce the power supply voltage to be output by the gate driving circuit and / or the power supply voltage to be output by the pixel driving circuit for displaying the overloaded screen.

[0010] Optionally, the step of reducing the gate drive voltage for displaying the overloaded screen if the screen to be displayed is the overloaded screen includes:

[0011] If the screen to be displayed is the overloaded screen, reduce the high-level power supply voltage output by the gate drive circuit and / or increase the low-level power supply voltage output by the gate drive circuit.

[0012] Optionally, the high-level power supply voltage output by the gate drive circuit is reduced by 10% to 30%; or the low-level power supply voltage output by the gate drive circuit is increased by 10% to 30%.

[0013] Optionally, the decrease range of the high-level power supply voltage output by the gate drive circuit is 5% to 15%, and the increase range of the low-level power supply voltage output by the gate drive circuit is 5% to 15%.

[0014] Optionally, if the to-be-displayed picture is the heavy-load picture, the step of decreasing the pixel driving voltage for displaying the heavy-load picture comprises:

[0015] If the to-be-displayed picture is the heavy-load picture, the high-level power supply voltage output by the pixel driving circuit is decreased, and / or the low-level power supply voltage output by the pixel driving circuit is increased.

[0016] Optionally, the step of judging whether the to-be-displayed picture is a heavy-load picture comprises:

[0017] Obtaining the luminance gamma values of the first pixel point and the second pixel point, the first pixel point and the second pixel point being pixel points in the same column and adjacent rows;

[0018] Calculating the absolute value of the difference between the luminance gamma value of the first pixel point and the luminance gamma value of the second pixel point;

[0019] Comparing the absolute value with a preset gamma value, and if the absolute value is greater than the preset gamma value, judging that the to-be-displayed picture is a heavy-load picture.

[0020] Optionally, the step of judging whether the to-be-displayed picture is a heavy-load picture comprises:

[0021] Obtaining the luminance gamma value of the mth row of pixel points and the luminance gamma value of the pixel points in the row adjacent to the mth row;

[0022] Calculating the first average gamma value of the mth row of pixel points and the second average gamma value of the pixel points in the row adjacent to the mth row;

[0023] Calculating the absolute value of the difference between the first average gamma value and the second average gamma value;

[0024] Comparing the absolute value with a preset gamma value, and if the absolute value is greater than the preset gamma value, judging that the to-be-displayed picture is a heavy-load picture.

[0025] Optionally, the step of judging whether the to-be-displayed picture is a heavy-load picture comprises:

[0026] Obtaining the luminance gamma values of the first pixel point, the second pixel point and the third pixel point, the first pixel point being adjacent to the second pixel point in the row direction and adjacent to the third pixel point in the column direction;

[0027] Calculate the absolute value of the difference between the brightness gamma value of the first pixel and the brightness gamma values ​​of the second and third pixels, respectively;

[0028] The absolute value is compared with a preset gamma value. If the absolute value is greater than the preset gamma value, the screen to be displayed is determined to be a reloaded screen.

[0029] Secondly, embodiments of this application provide a display driver module, including:

[0030] The acquisition module is used to acquire the screen to be displayed.

[0031] The judgment module is used to determine whether the screen to be displayed is a reloaded screen; and

[0032] The adjustment module is used to reduce the gate drive voltage and / or pixel drive voltage used to display the overloaded screen when the screen to be displayed is an overloaded screen.

[0033] Thirdly, embodiments of this application provide a display device, including a display panel and a display driving module as described in the second aspect, wherein the display driving module is electrically connected to the display panel.

[0034] In summary, due to the adoption of the above technical solution, this application includes at least the following beneficial effects:

[0035] The embodiments of this application provide a display driving module, a display driving method, and a display device. First, the display screen to be displayed is determined to confirm whether it is a heavy-load screen, so as to achieve targeted voltage adjustment for heavy-load screens. Then, by reducing the gate driving voltage and / or pixel driving voltage used to display heavy-load screens, the generation of voltage spikes during heavy-load screens is avoided, thereby avoiding increased power consumption of the display device during heavy-load screens and reducing the risk of panel circuit damage. Furthermore, the method of suppressing voltage spikes is to reduce the gate driving voltage and / or pixel driving voltage without adding other circuits, such as the chamfering circuit in related technologies, which is beneficial for cost control. Attached Figure Description

[0036] Figure 1 A schematic flowchart of a display driving method provided for an embodiment of this application;

[0037] Figure 2 A schematic diagram of the structure of a pixel driving circuit in a display driving method provided in an embodiment of this application;

[0038] Figure 3 A schematic diagram of the structure of a display driver module provided for an embodiment of this application;

[0039] Figure 4A schematic diagram of a hardware architecture of a display device provided by an embodiment of the present application.

[0040] Label explanations:

[0041] 100, an acquisition module; 200, a judgment module; 300, an adjustment module. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0043] In the description of the present application, it should be understood that the words “first”, “second” are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more features. In the description of the present application, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0044] In the present application, the word “exemplary” is used to mean “serving as an example, instance, or illustration”. Any embodiment described as “exemplary” in the present application is not necessarily to be construed as preferred or advantageous over other embodiments.

[0045] Please refer to Figure 1 The embodiment of the present application provides a display driving method, comprising:

[0046] S1, acquiring a to-be-displayed picture.

[0047] In the present embodiment, the system chip (System on Chip, SOC) of the display device will output a video signal to the timing control chip (Timer Controller, TCON). The timing control chip analyzes the video signal to obtain data information of the to-be-displayed picture.

[0048] S2, judging whether the to-be-displayed picture is a heavy-load picture.

[0049] Exemplarily, the timing control chip processes the data information of the to-be-displayed picture analyzed, and can obtain voltage information for driving picture display. Then, it is judged whether the to-be-displayed picture is a heavy-load picture according to the voltage information for driving picture display.

[0050] S3, if the to-be-displayed picture is a heavy-load picture, reducing the power supply voltage to be output by the gate driving circuit for displaying the heavy-load picture and / or the power supply voltage to be output by the pixel driving circuit.

[0051] For example, when the timing control chip determines that the current screen to be displayed is a reloaded screen, the power control chip will obtain the information that the screen to be displayed is a reloaded screen, and then perform a control action to reduce the gate drive voltage and / or pixel drive voltage used to display the reloaded screen, so as to avoid the occurrence of voltage spikes caused by the transition between high and low voltage levels when displaying the reloaded screen, thereby effectively reducing the power consumption of the display and protecting the circuits and components in the display device.

[0052] The technical solution provided in this application first determines whether the screen to be displayed is a heavy-load screen, so as to achieve targeted voltage adjustment for heavy-load screens; then, by reducing the gate drive voltage and / or pixel drive voltage used to display heavy-load screens, the generation of voltage spikes can be effectively avoided during heavy-load screens, thereby avoiding increased power consumption of the display device during heavy-load screens and reducing the risk of panel circuit damage. Furthermore, the method of suppressing voltage spikes is to reduce the gate drive voltage and / or pixel drive voltage, without the need for additional circuits, such as the chamfering circuit in related technologies, which is beneficial for cost control.

[0053] In some embodiments, the step of reducing the gate drive voltage and / or pixel drive voltage for displaying the heavy-load screen if the screen to be displayed is a heavy-load screen includes:

[0054] If the screen to be displayed is a heavy load screen, reduce the high-level power supply voltage output by the gate drive circuit and / or increase the low-level power supply voltage output by the gate drive circuit.

[0055] For example, if the screen to be displayed is a heavy-load screen, the high level in the gate drive circuit is reduced, while the low level of the row containing the high level remains unchanged. The reduction in the high level decreases the voltage difference between the high and low levels, resulting in a decrease in the row voltage in the gate drive circuit, thereby reducing the power consumption of the heavy-load screen. In one example, when the screen to be displayed is a heavy-load screen, the high level in the gate drive circuit is reduced from the standard value of 15V to 12V, a reduction of 20%, which effectively reduces the steepness of the rising edge of the gate drive signal, thereby suppressing voltage spikes.

[0056] For example, during heavy frame loads, raising the low level in the gate drive circuit keeps the high level of the row containing the low level unchanged. Lowering the low level reduces the voltage difference between the high and low levels, thus reducing the row voltage in the gate drive circuit and lowering the power consumption of the heavy frame load. In one example, during heavy frame loads, raising the low level of the array gate drive signal from the standard value of -5V to -4V (a 20% increase) effectively reduces the falling edge steepness of the gate drive signal, thereby suppressing voltage spikes.

[0057] For example, during heavy-load scenes, both the high level in the gate drive circuit and the low level in the gate drive circuit are lowered, reducing the voltage difference between the high and low levels. This results in a decrease in the horizontal voltage in the gate drive circuit, thereby reducing the power consumption of the heavy-load scene. In one example, during heavy-load scenes, the high level in the gate drive circuit is lowered from the standard value of 15V to 13V, a reduction of 13%, while the low level of the array gate drive signal is raised from the standard value of -5V to -4.5V, a rise of 10%. This voltage reduction of 23% effectively reduces the falling edge steepness of the gate drive signal, thereby suppressing voltage spikes.

[0058] Furthermore, if only the high level in the gate drive circuit is reduced, the reduction range is 10% to 30%, which is mainly suitable for scenarios where low level requirements are high, such as low-power mode. Alternatively, if only the low level in the gate drive circuit is increased, the increase range is 10% to 30%, which is suitable for scenarios where high level requirements are high, such as high refresh rate mode. By limiting the adjustment range of high and low levels, a single adjustment method can be selected according to the application scenario, balancing power consumption and performance, and adapting to display panels with various resolutions and refresh rates.

[0059] In some embodiments, if both the high level in the gate drive circuit is reduced and the low level in the gate drive circuit is increased, the reduction range of the high level is 5% to 15%, and the increase range of the low level is 5% to 15%. For example, the high level is reduced from 15V to 14.25V (a 5% reduction), and the low level is increased from -5V to -4.75V (a 5% increase). The adjustment method provided in this embodiment is suitable for scenarios with high requirements for power consumption and circuit protection, such as automotive displays. Simultaneous adjustment of both the high and low levels results in more significant peak voltage suppression, and the adjustment range is moderate, avoiding excessive impact on display quality.

[0060] To better understand the technical solution of the display driving method, the hardware architecture of the display device is described in detail below:

[0061] Please see Figure 4The display device includes a timing controller (TCON), a power management chip (PMIC), a display panel (Panel), source drivers (SD), and a gate driver circuit (GOA). The display device uses the timing controller (TCON) as its core, achieving high-precision image presentation through the collaborative efforts of multiple components. The timing controller (TCON) receives video signals (such as HDMI / eDP input) from the main control chip, performs gamma correction and resolution adaptation, and then distributes the image data to the source drivers (SD) via a high-speed interface (such as Mini-LVDS). Simultaneously, it generates precise timing control signals (STH / STV / CLK) to drive the gate driver circuit (GOA). The source drivers (SD) employ a cascaded design, converting digital signals into grayscale voltages through a digital-to-analog converter to drive the column lines (source lines) of the display panel. Its output buffer circuit must overcome the high capacitive load of the panel lines. The gate driver circuit (GOA) is directly integrated into the panel's glass substrate, activating the gate lines row by row through a shift register chain. A level shifter boosts the logic signals of the timing controller (TCON) to a high-voltage state, and a bootstrap circuit ensures that the thin-film transistors are fully turned on. The power management chip (PMIC) provides multi-domain power supply for the system: logic voltage drives the timing controller (TCON) and the gate drive circuit (GOA); analog voltage supplies the source / gate drive high-voltage modules; the backlight power supply supports local dimming or pixel current, and achieves dynamic voltage adjustment through an interface linked with the timing controller (TCON). The TFT backplane of the display panel (using LTPS or IGZO technology) carries the gate drive circuit (GOA) and pixel array. Each sub-pixel receives grayscale voltage through the source line, and the gate line controls the TFT switch to charge the liquid crystal capacitor (LCD) or drive the OLED light-emitting unit. The timing controller (TCON) coordinates the data latch of the source driver (SD) and the horizontal scan timing of the gate drive circuit (GOA) through the vertical synchronization (Vsync) signal. Combined with the power state machine of the power management chip (PMIC), it reduces the refresh rate and drive voltage during static images, while the EMI optimization algorithm controls the slope of the source output waveform to suppress electromagnetic interference.

[0062] In some embodiments, the step of reducing the pixel driving voltage for displaying a heavy-load screen if the screen to be displayed is a heavy-load screen includes:

[0063] If the screen to be displayed is a heavy screen, reduce the high-level power supply voltage output by the pixel driving circuit and / or increase the low-level power supply voltage output by the pixel driving circuit.

[0064] The power management chip is used to adjust the power supply level to the pixels. The adjustment method can be to lower the high level of the pixel power supply, raise the low level of the pixel power supply, or simultaneously lower and raise the high and low levels respectively. This reduces the voltage of the pixel power supply, thereby suppressing the generation of voltage spikes and reducing power consumption. Raising the low level of the negative power supply can also reduce the voltage fluctuation range of the pixel driving circuit and improve image stability.

[0065] For example, taking a 4T2C pixel driving circuit as an example, please refer to [link to relevant documentation]. Figure 2 The high level of the positive power supply OVDD is reduced by 20%, and the low level of the negative power supply OVSS is increased by 40%, which reduces the power consumption of the corresponding pixel by approximately 25% and narrows the range of voltage fluctuations, thus reducing screen flicker and ghosting. The first transistor T1, acting as a drive transistor, is controlled by the scan signal and provides drive voltage to the pixel unit, controlling the on / off state of the pixel current to achieve brightness adjustment. The second transistor T2, acting as a switching transistor, is controlled by the column scan signal. When the column scan signal goes high, it allows the pixel data voltage to be transmitted to the storage capacitor C1, thereby affecting the gate potential of the first transistor T1. The third transistor T3 is used to adjust or stabilize the voltage of the storage capacitor, making pixel driving more precise, and can store charge together with the storage capacitor C2. The fourth transistor T4 is used for pre-charging. When the fourth transistor is turned on, it restores the pixel node to the reference voltage V-ref, thereby reducing parasitic effects in the pixel circuit and improving refresh efficiency. The storage capacitor C1 is responsible for storing the pixel data voltage and determines the gate drive potential of the first transistor T1. The storage capacitor C2 is used to stabilize the gate or source potential to prevent voltage drift during refresh.

[0066] In some embodiments, the step of determining whether the screen to be displayed is a reloaded screen includes:

[0067] Obtain the brightness gamma value of the first pixel and the second pixel, where the first pixel and the second pixel are pixels in the same column and adjacent rows.

[0068] Calculate the absolute value of the difference between the luminance gamma value of the first pixel and the luminance gamma value of the second pixel.

[0069] The absolute value is compared with the preset gamma value. If the absolute value is greater than the preset gamma value, the screen to be displayed is determined to be a reloaded screen.

[0070] For example, select two adjacent rows of pixels in the same column, such as a pixel in row m and a pixel in row (m-1), and obtain the gamma value of each pixel. The gamma value of the pixel in row m and column n is G. m,n The gamma value of the pixel in the (m-1)th row and nth column is G. m-1,nCalculate the difference in gamma value between the pixel in the m-th row and the pixel in the (m-1)-th row of the n-th column, ΔG = |G| m,n -G m-1,n │. If ΔG>G th If so, the currently displayed screen is determined to be a reloaded screen. th This refers to the preset gamma value. In this embodiment, the preset gamma value G is... th It can be set to 200.

[0071] The heavy-load image detection scheme used in the above embodiments is suitable for black and white texture image detection, with a detection accuracy of over 95%, and has low algorithm complexity, making it suitable for high refresh rate display panels.

[0072] In some embodiments, the step of determining whether the screen to be displayed is a reloaded screen includes:

[0073] Get the luminance gamma value of the pixel in the m-th row and the luminance gamma value of the pixel in the row adjacent to the m-th row;

[0074] Calculate the first average gamma value of the pixels in the m-th row and the second average gamma value of the pixels in the row adjacent to the m-th row;

[0075] Calculate the absolute value of the difference between the first average gamma value and the second average gamma value;

[0076] The absolute value is compared with the preset gamma value. If the absolute value is greater than the preset gamma value, the screen to be displayed is determined to be a reloaded screen.

[0077] For example, select all pixels in the m-th row and the (m-1)-th row, and calculate the average gamma value of the pixels in the m-th row and the average gamma value of the pixels in the (m-1)-th row, respectively.

[0078] G avg,m =1 / n·∑ n i＝1 G m,1 ;

[0079] G avg,m-1 =1 / n·∑ n i＝1 G m-1,i .

[0080] Among them, G avg,m G refers to the average gamma value of all pixels in the m-th row. avg,m-1 It refers to the average gamma value of all pixels in the (m-1)th row.

[0081] Calculate the difference between the average gamma values ​​of the m-th row and the (m-1)-th row: ΔG avg =|G avg,m -G avg,m-1 │.

[0082] If ΔG avg >G th If so, the currently displayed screen is determined to be a reloaded screen. th This refers to the preset gamma value. In this embodiment, the preset gamma value G is... th It can be set to 200.

[0083] The above embodiments, by using the average gamma value for calculation, help to reduce the impact of single-point noise on the detection results and are suitable for various heavy-duty screen types, such as gradient stripe display screens.

[0084] In some embodiments, the step of determining whether the screen to be displayed is a reloaded screen includes:

[0085] Obtain the brightness gamma value of the first pixel, the second pixel, and the third pixel. The first pixel is adjacent to the second pixel in the row direction and to the third pixel in the column direction.

[0086] Calculate the absolute values ​​of the differences between the luminance gamma value of the first pixel and the luminance gamma values ​​of the second and third pixels, respectively;

[0087] The absolute value is compared with the preset gamma value. If the absolute value is greater than the preset gamma value, the screen to be displayed is determined to be a reloaded screen.

[0088] For example, pixel G is selected m,n and with G m,n Adjacent pixels G m+1,n and pixel G m,n+1 .

[0089] Calculate the difference between the gamma values ​​in the horizontal and vertical directions:

[0090] ΔG horizontal =|G m,n -G m,n+1 │;

[0091] ΔG vertical =|G m,n -G m+1,n │.

[0092] Wherein, ΔG horizontal It refers to the absolute value of the difference between the brightness gamma values ​​of the first pixel and the second pixel. ΔG vertical It refers to the absolute value of the difference between the brightness gamma values ​​of the first pixel and the third pixel.

[0093] If ΔG horizontal >G th And ΔG vertical >G thIf so, the currently displayed screen is determined to be a reloaded screen. th This refers to the preset gamma value. In this embodiment, the preset gamma value G is... th It can be set to 200.

[0094] The detection method described above is mainly applicable to the detection of checkerboard-patterned overloaded scenes, with a detection accuracy of over 98%. This detection method is applicable to various complex overloaded scene types.

[0095] Please see Figure 3 The embodiments of this application also provide a display driver module, including an acquisition module 100, a judgment module 200, and an adjustment module 300.

[0096] The acquisition module 100 is used to acquire the image to be displayed. For example, the acquisition module 100 can be located within a timing control chip. The timing control chip may have a storage unit inside to store relevant information about the image to be displayed.

[0097] The determination module 200 is used to determine whether the screen to be displayed is a reloaded screen. For example, the determination module 200 can process the parsed data information of the screen to be displayed to obtain the driving voltage of each sub-pixel of the screen to be displayed, and determine whether the screen to be displayed is a reloaded screen based on the change relationship between the driving voltages of adjacent pixels.

[0098] The adjustment module 300 is used to reduce the gate drive voltage and / or pixel drive voltage used to display the heavy-load screen when the screen to be displayed is a heavy-load screen.

[0099] Embodiments of this application also provide a display device, including a display panel and a display driving module as described in the foregoing embodiments, wherein the display driving module is electrically connected to the display panel. This display device possesses all the structure and beneficial effects of the display driving module, which will not be repeated here.

[0100] The technical solution provided in this application first determines whether the image to be displayed is a heavy-load image, thereby enabling targeted voltage adjustment for heavy-load images. Then, by reducing the gate drive voltage and / or pixel drive voltage used to display heavy-load images, voltage spikes can be effectively avoided during heavy-load display, thus preventing increased power consumption of the display device and reducing the risk of panel circuit damage. The technical solution provided in this application reduces the gate drive voltage and / or pixel drive voltage without requiring additional circuitry, such as the chamfering circuit in related technologies. The additional 10% to 30% of circuit board area occupied by the chamfering circuit can also be eliminated, thereby reducing module costs and helping to control the manufacturing cost of the display panel.

[0101] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0102] Similarly, it should be noted that, in order to simplify the description of the embodiments of this application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

Claims

1. A display driving method, characterized by, The method comprises the following steps: acquiring a to-be-displayed picture; judging whether the to-be-displayed picture is a heavy-load picture; if the to-be-displayed picture is the heavy-load picture, reducing the power supply voltage to be output by a gate drive circuit for displaying the heavy-load picture and / or the power supply voltage to be output by a pixel drive circuit; the step of reducing the power supply voltage to be output by the gate drive circuit for displaying the heavy-load picture comprises reducing the power supply voltage of a high level output by the gate drive circuit and / or raising the power supply voltage of a low level output by the gate drive circuit; the step of reducing the power supply voltage to be output by the pixel drive circuit for displaying the heavy-load picture comprises reducing the power supply voltage of a high level output by the pixel drive circuit and / or raising the power supply voltage of a low level output by the pixel drive circuit.

2. The display driving method according to claim 1, wherein The reduction range of the power supply voltage of a high level output by the gate drive circuit is 10% to 30%; or the raising range of the power supply voltage of a low level output by the gate drive circuit is 10% to 30%.

3. The display driving method according to claim 1, wherein The reduction range of the power supply voltage of a high level output by the gate drive circuit is 5% to 15% and the raising range of the power supply voltage of a low level output by the gate drive circuit is 5% to 15%.

4. The display driving method according to any one of claims 1 to 3, wherein The step of judging whether the to-be-displayed picture is a heavy-load picture comprises the following steps: acquiring the luminance gamma value of each of a first pixel point and a second pixel point, the first pixel point and the second pixel point being pixel points in the same column and adjacent rows; calculating the absolute value of the difference between the luminance gamma value of the first pixel point and the luminance gamma value of the second pixel point; comparing the absolute value with a preset gamma value, and if the absolute value is greater than the preset gamma value, judging that the to-be-displayed picture is a heavy-load picture.

5. The display driving method according to any one of claims 1 to 3, wherein The step of judging whether the to-be-displayed picture is a heavy-load picture comprises the following steps: acquiring the luminance gamma value of an mth row of pixel points and the luminance gamma value of a row of pixel points adjacent to the mth row; calculating the first average gamma value of the mth row of pixel points and the second average gamma value of a row of pixel points adjacent to the mth row; calculating the absolute value of the difference between the first average gamma value and the second average gamma value; comparing the absolute value with a preset gamma value, and if the absolute value is greater than the preset gamma value, judging that the to-be-displayed picture is a heavy-load picture.

6. The display driving method according to any one of claims 1 to 3, wherein The step of judging whether the to-be-displayed picture is a heavy-load picture comprises the following steps: acquiring the luminance gamma value of each of a first pixel point, a second pixel point and a third pixel point, the first pixel point being adjacent to the second pixel point in the row direction and adjacent to the third pixel point in the column direction; calculating the absolute value of the difference between the luminance gamma value of the first pixel point and the luminance gamma value of each of the second pixel point and the third pixel point; comparing the absolute value with a preset gamma value, and if the absolute value is greater than the preset gamma value, judging that the to-be-displayed picture is a heavy-load picture.

7. A display driving module, characterized by comprising: The method comprises the following steps: an acquiring module, configured to acquire a to-be-displayed picture; a judging module, configured to judge whether the to-be-displayed picture is a heavy-load picture; and a reducing module, configured to reduce the power supply voltage to be output by a gate drive circuit for displaying the heavy-load picture and / or the power supply voltage to be output by a pixel drive circuit. The adjusting module is used for reducing the gate driving voltage and / or the pixel driving voltage for displaying the heavy-load picture when the picture to be displayed is the heavy-load picture; the power voltage to be output by the gate driving circuit for displaying the heavy-load picture comprises reducing the power voltage of the high level output by the gate driving circuit and / or raising the power voltage of the low level output by the gate driving circuit; the power voltage to be output by the pixel driving circuit for displaying the heavy-load picture comprises reducing the power voltage of the high level output by the pixel driving circuit and / or raising the power voltage of the low level output by the pixel driving circuit.

8. A display device, characterized by comprising: The display driving module as claimed in claim 7 is electrically connected with the display panel.

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