Display driving module, display driving method and display device

Abstract

The invention provides a display driving module, a display driving method and a display device. The display driving method comprises the following steps: acquiring a to-be-displayed picture; judging whether the to-be-displayed picture is a heavy-load picture or not; and if the to-be-displayed picture is the heavy-load picture, reducing a gate driving voltage and / or a pixel driving voltage for displaying the heavy-load picture. The method comprises the following steps: firstly, judging a to-be-displayed picture, and determining whether the to-be-displayed picture is a heavy-load picture or not, so as to realize targeted voltage regulation on the heavy-load picture; then, by reducing the gate driving voltage and / or the pixel driving voltage for displaying the heavy-load picture, the generation of peak voltage during the heavy-load picture can be effectively avoided, so that the power consumption increase of the display device during the heavy-load picture is avoided, and the risk of damage to a panel circuit is reduced; moreover, the mode for suppressing the generation of the peak voltage is to reduce the gate driving voltage and / or the pixel driving voltage, and other circuits, such as a chamfering circuit in the related technology, do not need to be added, thereby facilitating the control of the cost.

Description

Technical Field

[0001] The present 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 Art

[0002] The display screen of the display device is divided into a light load screen and a heavy load screen. When the display device displays a heavy load screen, due to the repeated jump between high and low levels of voltage, the rising / falling edge of the level conversion will generate a spike voltage, resulting in increased power consumption of the display device and even damage to the panel circuit in the display device.

[0003] In view of this, in the related art, although the voltage level of the rising / falling edge of the level conversion can be effectively reduced by adding a chamfering circuit in the display device, the need to add an additional circuit will increase the overall cost of the display device, which is not conducive to cost control. Summary of the invention

[0004] In view of this, the present 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 circuits.

[0005] The technical solution adopted by this application to solve the above technical problems is:

[0006] In a first aspect, an embodiment of the present application provides a display driving method, comprising:

[0007] Get the picture to be displayed;

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

[0009] If the picture to be displayed is the heavy-load picture, 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 heavy-load picture is reduced.

[0010] Optionally, if the picture to be displayed is the heavy-load picture, the step of reducing the gate driving voltage for displaying the heavy-load picture includes:

[0011] If the picture to be displayed is the heavy-load picture, the high-level power supply voltage output by the gate driving circuit is reduced, and / or the low-level power supply voltage output by the gate driving circuit is increased.

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

[0013] Optionally, the high-level power supply voltage output by the gate driving circuit is reduced in a range of 5% to 15% and the low-level power supply voltage output by the gate driving circuit is increased in a range of 5% to 15%.

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

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

[0016] Optionally, the step of determining whether the picture to be displayed is a reloaded picture includes:

[0017] Obtaining respective brightness gamma values ​​of a first pixel and a second pixel, where the first pixel and the second pixel are pixels in the same column and adjacent rows;

[0018] Calculating an absolute value of a difference between a brightness gamma value of the first pixel and a brightness gamma value of the second pixel;

[0019] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0020] Optionally, the step of determining whether the picture to be displayed is a reloaded picture includes:

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

[0022] Calculating a first average gamma value of the m-th row of pixels and a second average gamma value of a row of pixels adjacent to the m-th row;

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

[0024] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0025] Optionally, the step of determining whether the picture to be displayed is a reloaded picture includes:

[0026] Obtaining brightness gamma values ​​of a first pixel, a second pixel, and a third pixel, respectively, wherein the first pixel is adjacent to the second pixel in a row direction and adjacent to the third pixel in a column direction;

[0027] Calculating the absolute values ​​of the differences between the brightness gamma value of the first pixel and the brightness gamma values ​​of the second pixel and the third pixel;

[0028] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0029] In a second aspect, an embodiment of the present application provides a display driving module, including:

[0030] An acquisition module, used to acquire the picture to be displayed;

[0031] A judging module, used for judging whether the picture to be displayed is a reloaded picture; and

[0032] The adjustment module is used for reducing the gate driving voltage and / or the pixel driving voltage used for displaying the heavy-loaded picture when the picture to be displayed is a heavy-loaded picture.

[0033] In a third aspect, an embodiment of the present application provides a display device, comprising 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 has at least the following beneficial effects:

[0035] The embodiments of the present application provide a display driving module, a display driving method and a display device. First, a judgment is made on a screen to be displayed to confirm whether the screen to be displayed is a heavy-loaded screen, so as to implement targeted voltage adjustment for the heavy-loaded screen. Then, the gate driving voltage and / or the pixel driving voltage used to display the heavy-loaded screen is reduced to avoid the generation of spike voltage when the screen is heavy-loaded, thereby avoiding the increase in power consumption of the display device when the screen is heavy-loaded, and reducing the risk of damage to the panel circuit. The method for suppressing the generation of spike voltage is to reduce the gate driving voltage and / or the pixel driving voltage, without adding other circuits, such as the chamfering circuit in the related art, which is conducive to controlling costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic flow chart of a display driving method provided in an embodiment of the present application;

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

[0038] Figure 3 A schematic diagram of the structure of a display driving module provided in an embodiment of the present application;

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

[0040] Description of reference numerals:

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

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

[0043] In the description of this application, it should be understood that the words "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

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

[0045] See also Figure 1 , an embodiment of the present application provides a display driving method, comprising:

[0046] S1. Obtain the picture to be displayed.

[0047] In this embodiment, the system on chip (SOC) of the display device outputs the video signal to the timer controller (TCON). The timer controller analyzes the video signal to obtain data information of the image to be displayed.

[0048] S2. Determine whether the picture to be displayed is a reloaded picture.

[0049] Exemplarily, the timing control chip processes the parsed data information of the picture to be displayed to obtain voltage information for driving the picture display, and then determines whether the picture to be displayed is a heavy-load picture according to the voltage information for driving the picture display.

[0050] S3. If the picture to be displayed is a heavy-load picture, 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 heavy-load picture.

[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 make a control action to reduce the gate drive voltage and / or pixel drive voltage used to display the reloaded screen, so that when the reloaded screen is displayed, it can avoid as much as possible the occurrence of spike voltage on the rising edge or falling edge caused by the conversion of voltage between high and low levels, thereby effectively reducing the display power consumption and protecting the circuits and components in the display device.

[0052] The technical solution provided in the present application first determines the screen to be displayed to confirm whether the screen to be displayed is a heavy-loaded screen, so as to achieve targeted voltage adjustment for the heavy-loaded screen; then, by reducing the gate drive voltage and / or pixel drive voltage used to display the heavy-loaded screen, it can effectively avoid the generation of spike voltage when the screen is heavy-loaded, thereby avoiding the increase in power consumption of the display device when the screen is heavy-loaded, and reducing the risk of damage to the panel circuit, and the method for suppressing the generation of spike voltage is by reducing the gate drive voltage and / or pixel drive voltage, without the need to add other circuits, such as the chamfering circuit in the related technology, which is conducive to controlling costs.

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

[0054] If the picture to be displayed is a heavy-load picture, the high-level power supply voltage output by the gate driving circuit is reduced, and / or the low-level power supply voltage output by the gate driving circuit is increased.

[0055] Exemplarily, if the picture to be displayed is a heavy-loaded picture, the high level in the gate drive circuit is reduced, so that the low level of the row where the high level is located remains unchanged, the high level is reduced, and the voltage difference between the high and low levels is reduced, resulting in a reduction in the row voltage in the gate drive circuit, thereby reducing the power consumption of the heavy-loaded picture. In one example, when the picture to be displayed is a heavy-loaded picture, the high level in the gate drive circuit is reduced from the standard value of 15V to 12V, which is reduced by 20%, which can effectively reduce the steepness of the rising edge of the gate drive signal, thereby suppressing the peak voltage.

[0056] Exemplarily, when the screen is reloaded, the low level in the gate drive circuit is raised, so that the high level of the row where the low level is located remains unchanged, the low level is reduced, and the voltage difference between the high and low levels is reduced, resulting in a reduction in the row voltage in the gate drive circuit, thereby reducing the power consumption of the reloaded screen. In one example, when the screen is reloaded, the low level of the array gate drive signal is raised from the standard value of -5V to -4V, which is raised by 20%, which can effectively reduce the steepness of the falling edge of the gate drive signal, thereby suppressing the peak voltage.

[0057] Exemplarily, when the screen is reloaded, the high level in the gate drive circuit is reduced and the low level in the gate drive circuit is raised, so that the voltage difference between the high and low levels is reduced, resulting in a reduction in the row voltage in the gate drive circuit, thereby reducing the power consumption of the reloaded screen. In one example, when the screen is reloaded, the high level in the gate drive circuit is reduced from the standard value of 15V to 13V, which is reduced by 13%, and the low level of the array gate drive signal is raised from the standard value of -5V to -4.5V, which is raised by 10%, and the voltage is reduced by 23%, which can effectively reduce the steepness of the falling edge of the gate drive signal, thereby suppressing the peak voltage.

[0058] Furthermore, if only the high level in the gate drive circuit is reduced, the range of the high level reduction is 10% to 30%, which is mainly suitable for scenarios with high requirements for low levels, such as low power consumption mode. Or if only the low level in the gate drive circuit is raised, the range of the low level increase is 10% to 30%, which is suitable for scenarios with high requirements for high levels, 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 can be adapted to display panels with a variety of 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 raised, the high level is reduced by 5% to 15%, and the low level is raised by 5% to 15%. For example, the high level is reduced from 15V to 14.25V, which is a 5% reduction, and the low level is raised from -5V to -4.75V, which is 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 vehicle-mounted display screens. By adjusting the high level and the low level at the same time, the peak voltage suppression effect is more significant, and the adjustment amplitude is moderate to avoid excessive impact on display quality.

[0060] In order to more clearly understand the technical solution of the display driving method, the hardware architecture of the display device is described in detail below:

[0061] See also Figure 4The display device includes a timing controller TCON, a power management chip PMIC, a display panel Panel, a source driver SD, and a gate drive circuit GOA. The display device is centered on the timing controller TCON and realizes high-precision image presentation through the collaboration of multiple components. The timing controller TCON receives the video signal (such as HDMI / eDP input) from the main control chip, and after gamma correction, resolution adaptation and other processing, distributes the image data to the source driver SD through a high-speed interface (such as Mini-LVDS), and generates precise timing control signals (STH / STV / CLK) to drive the gate drive circuit GOA. The source driver SD adopts a cascade design, converts the digital signal into a grayscale voltage through a digital-to-analog conversion module, and drives the column line (source line) of the display panel. Its output buffer circuit needs to overcome the high capacitive load of the panel line; and the gate drive circuit GOA is directly integrated into the panel glass substrate, and the gate line is activated row by row through the shift register chain. The level shifter raises the logic signal of the timing controller TCON to a high voltage state, and cooperates with the bootstrap circuit to ensure that the thin film transistor is 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 module, the backlight power supply supports regional dimming or pixel current, and realizes dynamic voltage adjustment through the interface and the timing controller TCON linkage. The TFT backplane of the display panel (using LTPS or IGZO process) carries the gate drive circuit GOA and the pixel array. Each sub-pixel receives the 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 row scanning timing of the gate drive circuit GOA through the vertical synchronization (Vsync) signal. Combined with the power consumption state machine of the power management chip PMIC, the refresh rate and drive voltage are reduced in static images, and the EMI optimization algorithm controls the slope of the source output waveform to suppress electromagnetic interference.

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

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

[0064] The power management chip is used to adjust the level of the power supply for the pixel. The adjustment method can be to lower the high level of the pixel power supply, or to raise the low level of the pixel power supply, or to lower and raise the high level and low level at the same time, so as to reduce the voltage of the pixel power supply, thereby suppressing the generation of peak voltage and reducing power consumption. By raising the low level of the negative power supply, the voltage fluctuation range of the pixel driving circuit can be reduced, and the picture stability can be improved.

[0065] For example, a 4T2C pixel driving circuit is used as an example. 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 raised by 40%, so that the power consumption corresponding to the pixel can be reduced by about 25%, and the range of voltage fluctuation is narrowed, reducing the flickering and afterimage phenomenon of the screen. The first transistor T1 is used as a driving transistor, which is controlled by the scanning signal and is used to provide a driving voltage to the pixel unit and control the on and off of the pixel current to achieve brightness adjustment. The second transistor T2 is used as a switching transistor, which is controlled by the column-direction scanning signal. When the column-direction scanning signal becomes high, the pixel data voltage is allowed 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, so that the pixel drive is more accurate, and can store charge together with the storage capacitor C2. The fourth transistor T4 is used for precharging. When the fourth transistor is turned on, the pixel node is restored to the reference voltage V-ref, thereby reducing the parasitic effect of the pixel circuit and providing refresh efficiency. The storage capacitor C1 is responsible for storing the pixel data voltage and determining the gate drive potential of the first transistor T1. The storage capacitor C2 is used to stabilize the gate or source potential to avoid voltage drift during refresh.

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

[0067] The brightness gamma values ​​of a first pixel and a second pixel are obtained, where the first pixel and the second pixel are pixels in the same column and adjacent rows.

[0068] The absolute value of the difference between the brightness gamma value of the first pixel and the brightness gamma value of the second pixel is calculated.

[0069] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0070] Exemplarily, two adjacent rows of pixels in the same column, such as a pixel in the mth row and a pixel in the (m-1)th row, are selected, and the gamma values ​​of the two pixels are obtained respectively. The gamma value of the pixel in the mth row and the nth column is G m,n , the gamma value of the pixel in the (m-1)th row and the nth column is G m-1,n. Calculate the difference in gamma value between the pixel in the mth row in the nth column and the pixel in the (m-1)th row ΔG=|G m,n -G m-1,n │. If ΔG>G th , then the current screen to be displayed is determined to be a reloaded screen. th Refers to the preset gamma value. In this embodiment, the preset gamma value G th Can be set to 200.

[0071] The heavy-duty picture detection solution adopted in the above embodiment is suitable for black and white stripe picture detection, and the detection accuracy can reach more than 95%, and the algorithm complexity is low, which is suitable for high refresh rate display panels.

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

[0073] Obtain the brightness gamma value of the pixel points in the mth row and the brightness gamma value of the pixel points in a row adjacent to the mth row;

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

[0075] Calculating an absolute value of a difference between the first average gamma value and the second average gamma value;

[0076] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0077] Exemplarily, all pixels in the m-th row and the (m-1)-th row are selected, and 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 are calculated 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 Refers to the average gamma value of all pixels in the mth row, G 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 mth row and the (m-1th row): ΔG avg =│G avg,m -G avg,m-1 │.

[0082] If ΔG avg >G th , then the current screen to be displayed is determined to be a reloaded screen. th Refers to the preset gamma value. In this embodiment, the preset gamma value G th Can be set to 200.

[0083] The above embodiment adopts the mean calculation of the gamma value, which is beneficial to reducing the influence of single-point noise on the detection result, and is applicable to a variety of heavy-loaded screen types, such as the display screen of gradient stripes.

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

[0085] Obtaining respective brightness gamma values ​​of a first pixel point, a second pixel point, and a third pixel point, wherein the first pixel point is adjacent to the second pixel point in a row direction and adjacent to the third pixel point in a column direction;

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

[0087] The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

[0088] For example, select pixel G m,n , and with G m,n Pixel adjacent to pixel G m+1,n and Pixel G m,n+1 .

[0089] Calculate the difference in horizontal and vertical gamma:

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

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

[0092] Among them, ΔG horizontal 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 th, then the current screen to be displayed is determined to be a reloaded screen. th Refers to the preset gamma value. In this embodiment, the preset gamma value G th Can be set to 200.

[0094] The detection method of the above embodiment is mainly applicable to the detection of chessboard overloaded images, and the detection accuracy can reach more than 98%. The detection method can be applicable to various types of complex overloaded images.

[0095] See also Figure 3 , an embodiment of the present application further provides a display driving 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 picture to be displayed. Exemplarily, the acquisition module 100 can be set in a timing control chip. A storage unit can be set inside the timing control chip to store relevant information of the picture to be displayed.

[0097] The judgment module 200 is used to judge whether the picture to be displayed is a heavy-loaded picture. For example, the judgment module 200 can process the parsed data information of the picture to be displayed, obtain the driving voltage of each sub-pixel of the picture to be displayed, and judge whether the picture to be displayed is a heavy-loaded picture according to the change relationship between the driving voltages of adjacent pixels.

[0098] The adjustment module 300 is used for reducing the gate driving voltage and / or the pixel driving voltage for displaying the heavy-loaded picture when the picture to be displayed is a heavy-loaded picture.

[0099] The embodiment of the present application further provides a display device, comprising a display panel and a display driving module as described in the above embodiment, wherein the display driving module is electrically connected to the display panel. The display device has all the structures and beneficial effects of the display driving module, which will not be described in detail here.

[0100] The technical solution provided by the present application first determines the screen to be displayed to confirm whether the screen to be displayed is a heavy-loaded screen, so as to achieve targeted voltage adjustment for the heavy-loaded screen; then, by reducing the gate drive voltage and / or pixel drive voltage used to display the heavy-loaded screen, it can effectively avoid the generation of spike voltage when the screen is heavy-loaded, thereby avoiding the increase in power consumption of the display device when the screen is heavy-loaded, and reducing the risk of damage to the panel circuit. The technical solution provided by the present application is to reduce the gate drive voltage and / or pixel drive voltage without adding other circuits, such as the chamfering circuit in the related art. The additional 10% to 30% of the circuit board area occupied by the chamfering circuit can also be cancelled, thereby reducing the module cost, which is beneficial to controlling the manufacturing cost of the display panel.

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

[0102] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of the present application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of the present application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

Claims

1. A display driving method, characterized in that: include: Get the picture to be displayed; Determine whether the picture to be displayed is a reloaded picture; If the picture to be displayed is the heavy-load picture, 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 heavy-load picture is reduced.

2. The display driving method according to claim 1, wherein: If the image to be displayed is the heavy-load image, the step of reducing the gate driving voltage for displaying the heavy-load image comprises: If the picture to be displayed is the heavy-load picture, the high-level power supply voltage output by the gate driving circuit is reduced, and / or the low-level power supply voltage output by the gate driving circuit is increased.

3. The display driving method according to claim 2, wherein: The high-level power supply voltage output by the gate driving circuit is reduced in a range of 10% to 30%; or the low-level power supply voltage output by the gate driving circuit is increased in a range of 10% to 30%.

4. The display driving method according to claim 2, wherein: The high-level power supply voltage output by the gate driving circuit is reduced in a range of 5% to 15% and the low-level power supply voltage output by the gate driving circuit is increased in a range of 5% to 15%.

5. The display driving method according to claim 1, wherein: If the picture to be displayed is the heavy-load picture, the step of reducing the pixel driving voltage for displaying the heavy-load picture comprises: If the picture to be displayed is the heavy-load picture, the high-level power supply voltage output by the pixel driving circuit is reduced, and / or the low-level power supply voltage output by the pixel driving circuit is increased.

6. The display driving method according to any one of claims 1 to 5, characterized in that: The step of determining whether the picture to be displayed is a reloaded picture includes: Obtaining respective brightness gamma values ​​of a first pixel and a second pixel, where the first pixel and the second pixel are pixels in the same column and adjacent rows; Calculating an absolute value of a difference between a brightness gamma value of the first pixel and a brightness gamma value of the second pixel; The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

7. The display driving method according to any one of claims 1 to 5, characterized in that: The step of determining whether the picture to be displayed is a reloaded picture includes: Obtaining the brightness gamma value of the pixel points in the mth row and the brightness gamma value of the pixel points in a row adjacent to the mth row; Calculating a first average gamma value of the m-th row of pixels and a second average gamma value of a row of pixels adjacent to the m-th row; Calculating an absolute value of a difference between the first average gamma value and the second average gamma value; The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

8. The display driving method according to any one of claims 1 to 5, characterized in that: The step of determining whether the picture to be displayed is a reloaded picture includes: Obtaining brightness gamma values ​​of a first pixel, a second pixel, and a third pixel, wherein the first pixel is adjacent to the second pixel in a row direction and adjacent to the third pixel in a column direction; Calculating the absolute values ​​of the differences between the brightness gamma value of the first pixel and the brightness gamma values ​​of the second pixel and the third pixel; The absolute value is compared with a preset gamma value, and if the absolute value is greater than the preset gamma value, it is determined that the picture to be displayed is a reloaded picture.

9. A display driver module, characterized in that: include: An acquisition module, used to acquire the picture to be displayed; A judging module, used for judging whether the picture to be displayed is a reloaded picture; as well as The adjustment module is used for reducing the gate driving voltage and / or the pixel driving voltage used for displaying the heavy-loaded picture when the picture to be displayed is a heavy-loaded picture.

10. A display device, characterized in that: It comprises a display panel and the display driving module as claimed in claim 9, wherein the display driving module is electrically connected to the display panel.

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