Display device and its driving method

Abstract

This invention discloses a display device and its driving method. The display device includes a gate low-voltage line, a gate driving module, a timing control module, multiple refresh control modules, and multiple scan lines. The gate driving module includes multiple cascaded gate driving units, which are used to generate gate driving signals. Each gate driving unit is connected to a first terminal of a refresh control module, the second terminals of all refresh control modules are connected to the gate low-voltage line, the third terminal of each refresh control module is connected to a scan line, and the control terminals of all refresh control modules are connected to the output terminal of the timing control module. The timing control module is used to control the refresh control module to adjust the on / off state of each gate driving unit and the gate low-voltage line with the corresponding scan line, thereby adjusting the gate selection driving number of each scan line and adjusting the refresh frequency of different areas of the display panel to reduce the power consumption of the display device.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display device and its driving method. Background Technology

[0002] With the continuous progress of society, it is essential to reduce the energy consumption of display products in order to meet the goals of green, low-carbon, energy-saving, and emission-reduction. In LCD monitors, refresh rate refers to the number of times the display device refreshes the image per second. The refresh rate directly affects the display image quality and power consumption. A higher refresh rate can improve the quality of the displayed image, but it also means higher power consumption. Therefore, reducing the power consumption of the display panel while ensuring display quality is an urgent problem to be solved. Summary of the Invention

[0003] This invention provides a display device and its driving method to reduce the power consumption of the display device.

[0004] In a first aspect, embodiments of the present invention provide a display device, which includes a gate low-voltage line, a gate driving module, a timing control module, multiple refresh control modules, and multiple scan lines; The gate drive module includes multiple cascaded gate drive units, which are used to generate gate drive signals. Each of the gate driving units is connected to the first terminal of a refresh control module, the second terminal of all the refresh control modules is connected to the gate low voltage line, the third terminal of each of the refresh control modules is connected to a row of the scan lines, and the control terminal of all the refresh control modules is connected to the output terminal of the timing control module. The timing control module is used to control the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, so as to adjust the gate selection driving number of each row of scan lines and adjust the refresh frequency of different areas of the display panel.

[0005] Optionally, the refresh control module includes a first P-type MOSFET and a first N-type MOSFET; The first terminal of the first P-type MOSFET serves as the first terminal of the refresh control module. The second terminal of the first P-type MOSFET is connected to the first terminal of the first N-type MOSFET and serves as the third terminal of the refresh control module. The second terminal of the first N-type MOSFET serves as the second terminal of the refresh control module. The control terminal of the first P-type MOSFET is connected to the control terminal of the first N-type MOSFET and serves as the control terminal of the refresh control module.

[0006] Optionally, the refresh control module includes a second P-type MOSFET and a second N-type MOSFET; The first terminal of the second N-type MOSFET serves as the first terminal of the refresh control module. The second terminal of the second N-type MOSFET is connected to the first terminal of the second P-type MOSFET and serves as the third terminal of the refresh control module. The second terminal of the second P-type MOSFET serves as the second terminal of the refresh control module. The control terminal of the second P-type MOSFET is connected to the control terminal of the second N-type MOSFET and serves as the control terminal of the refresh control module.

[0007] Optionally, the display device may further include an image processing module; The image processing module is connected to the timing control module; The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data. The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of the scan line based on the coordinate information or frequency domain division information.

[0008] Optionally, the display device may also include multiple rows of data lines and a data driving module; The data driving module is connected to each column of the data lines, and the timing control module is connected to the data driving module; The timing control module is used to control the data driving module to output a black level to each column of data lines when the data is refreshed in the low-frequency display area and the refresh control module is in the off state.

[0009] Secondly, embodiments of the present invention also provide a driving method for a display device, wherein the driving method for the display device is executed using the display device provided in the embodiments of the present invention; The driving method for the display device includes: The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, so as to adjust the gate selection driving number of each row of scan lines and adjust the refresh frequency of different areas of the display panel.

[0010] Optionally, the display device further includes an image processing module; The image processing module is connected to the timing control module; Before the timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, the method further includes: The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data; The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, including: The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of the scan line according to the coordinate information or frequency domain division information.

[0011] Optionally, the display device further includes multiple rows of data lines and a data driving module; The data driving module is connected to each column of the data lines, and the timing control module is connected to the data driving module; After the timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, the method further includes: The timing control module generates a display control signal based on the current image display data; The data driving module adjusts the output data voltage to each column of data lines according to the display control signal, so that the display panel updates the display screen.

[0012] Optionally, the data driving module adjusts the output data voltage to each column of data lines according to the display control signal, and further includes: The data driving module outputs a black level to each column of data lines when refreshing in the low-frequency display area according to the display control signal and when the refresh control module is in the off state.

[0013] Optionally, after the data driving module adjusts the output data voltage for each column of data lines according to the display control signal, the method further includes: The image processing module acquires image display data, uses the newly acquired image display data as the current image display data, and determines whether the display screen of the display panel needs to be adjusted based on the current image display data. If the display screen of the display panel needs to be adjusted, the process returns to the step of the image processing module determining the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data. If the display screen of the display panel does not need to be adjusted, the data driving module continues to output data voltage to each column of the data lines so that the display panel maintains the display screen.

[0014] In this embodiment of the invention, the gate low voltage line and the gate driving module are connected to the row scan line through the refresh control module. This allows the timing control module to control the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row scan line, thereby adjusting the gate selection driving number of each row scan line, adjusting the refresh frequency of different areas of the display panel, and thus reducing the power consumption of the display device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention; Figure 2 A timing diagram of the timing control module controlling each refresh control module when the display panel is in normal display mode, provided by an embodiment of the present invention; Figure 3 The present invention provides a timing diagram of a timing control module controlling each refresh control module in one frame when the display panel is in multi-frequency display mode; Figure 4 The present invention provides a timing diagram for a timing control module controlling each refresh control module in 2 or 3 frames when the display panel is in multi-frequency display mode; Figure 5 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention; Figure 8 A schematic flowchart of a driving method for a display device provided in an embodiment of the present invention; Figure 9 This is a flowchart illustrating another driving method for a display device provided in an embodiment of the present invention. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 1 As shown, the display device includes a gate low voltage line 110, a gate drive module 120, a timing control module 130, multiple refresh control modules 140, and multiple scan lines 150; the gate drive module 120 includes multiple cascaded gate drive units 121, which are used to generate gate drive signals. Each gate driving unit 121 is connected to the first terminal of a refresh control module 140, the second terminal of all refresh control modules 140 is connected to the gate low voltage line 110, the third terminal of each refresh control module 140 is connected to a row scan line 150, and the control terminal of all refresh control modules 140 is connected to the output terminal of the timing control module 130. The timing control module 130 is used to control the refresh control module 140 to adjust the on / off state of each gate driving unit 121 and the gate low voltage line 110 with the corresponding row scan line 150, so as to adjust the gate selection driving number of each row scan line 150 and adjust the refresh frequency of different areas of the display panel.

[0020] The row scan lines 150 are horizontally arranged metal traces in the display panel array substrate. Each line corresponds to an entire row of pixels on the panel and is responsible for simultaneously turning on or off all thin-film transistors (TFTs) in a row, enabling progressive scan imaging of the display panel. The refresh control module 140 controls the connection between the gate low-voltage line 110 and the gate drive module 120 and their corresponding row scan lines 150. The gate low-voltage line 110 provides a negative voltage to ensure reliable shutdown of the TFTs connected to the row scan lines 150 when the gate low-voltage line 110 is connected to multiple row scan lines 150, preventing pixel leakage and screen flicker. The gate drive module 120 can perform progressive scan of the entire screen and lock the pixel voltage to ensure stable, flicker-free images. The timing control module 130 includes a timing controller, which is the central controller of the display panel. It can generate clock signals, set the sequence, control row scans, control column drives, and manage power timing, ensuring that the gate, source, thin-film transistors, and row scan lines 150 all work synchronously for stable imaging.

[0021] Based on the above connection relationships, the operation process of the display device is described as follows: When the display panel is in normal display mode, the refresh rate of the entire screen is controlled uniformly; for example, Figure 2 This invention provides a timing diagram of a timing control module controlling each refresh control module when the display panel is in normal display mode. Specifically, the timing control module 130 controls each refresh control module 140 to adjust the connection between each row of scan lines 150 and the corresponding gate driving unit 121, thereby sequentially selecting and driving each row of scan lines 150 and maintaining a consistent refresh rate across the entire display panel. When the display panel is in multi-frequency display mode, i.e., different display areas have different refresh rates; for example, Figure 3 The present invention provides a timing diagram of a timing control module controlling each refresh control module in one frame when the display panel is in multi-frequency display mode. Figure 4 In an embodiment of the present invention, a timing control module controls the timing diagram of each refresh control module in 2 or 3 frames when the display panel is in multi-frequency display mode. Specifically, in the 3 frames of multi-frequency mode, the first frame refreshes data normally, while the second and third frames do not refresh data in the low refresh rate zone, forming a low refresh rate zone and a normal display zone. The timing control module 130 controls each refresh control module 140 to adjust the connection timing between each scan line 150 and the corresponding gate drive unit 121, thereby adjusting the gate selection drive number of each scan line 150 in different display areas above and below, and thus adjusting the refresh frequency of different display areas above and below.

[0022] In this embodiment of the invention, the gate low voltage line 110 and the gate driving module 120 are connected to the row scan line 150 through the refresh control module 140. This allows the timing control module 130 to control the refresh control module 140 to adjust the on / off state of each gate driving unit 121 and the gate low voltage line 110 with the corresponding row scan line 150, thereby adjusting the gate selection driving number of each row scan line 150, adjusting the refresh frequency of different areas of the display panel, and thus reducing the power consumption of the display device.

[0023] Based on the above embodiments, optionally, Figure 5 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention. Figure 5 As shown, the refresh control module 140 includes a first P-type MOSFET P1 and a first N-type MOSFET N1; the first terminal of the first P-type MOSFET P1 serves as the first terminal of the refresh control module 140, the second terminal of the first P-type MOSFET P1 is connected to the first terminal of the first N-type MOSFET N1 and serves as the third terminal of the refresh control module 140, the second terminal of the first N-type MOSFET N1 serves as the second terminal of the refresh control module 140, and the control terminal of the first P-type MOSFET P1 is connected to the control terminal of the first N-type MOSFET N1 and serves as the control terminal of the refresh control module 140.

[0024] Specifically, the timing control module 130 outputs a high-level signal to connect each scan line 150 to its corresponding gate low-voltage line 110, and outputs a low-level signal to connect each scan line 150 to its corresponding gate driving unit 121. Thus, the timing control module 130, through the refresh control module 140, adjusts the on / off states of each gate driving unit 121 and gate low-voltage line 110 with their respective scan lines 150, thereby adjusting the gate selection drive count of each scan line 150 and regulating the refresh frequency of different areas of the display panel.

[0025] Based on the above embodiments, optionally, Figure 6 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention. Figure 6 As shown, the refresh control module 140 includes a second P-type MOSFET P2 and a second N-type MOSFET N2; the first terminal of the second N-type MOSFET N2 serves as the first terminal of the refresh control module 140, the second terminal of the second N-type MOSFET N2 is connected to the first terminal of the second P-type MOSFET P2 and serves as the third terminal of the refresh control module 140, the second terminal of the second P-type MOSFET P2 serves as the second terminal of the refresh control module 140, and the control terminal of the second P-type MOSFET P2 is connected to the control terminal of the second N-type MOSFET N2 and serves as the control terminal of the refresh control module 140.

[0026] In this system, the timing control module 130 outputs a high-level signal to connect each scan line 150 to its corresponding gate driving unit 121, and outputs a low-level signal to connect each scan line 150 to its corresponding gate low-voltage line 110. Thus, the timing control module 130, through the refresh control module 140, adjusts the on / off states of each gate driving unit 121 and gate low-voltage line 110 with its corresponding scan line 150, thereby adjusting the gate selection drive count of each scan line 150 and regulating the refresh frequency of different areas of the display panel.

[0027] Based on the above embodiments, optionally, Figure 7 This is a schematic diagram of another refresh control module provided in an embodiment of the present invention. Figure 7 As shown, the display device also includes an image processing module 160; the image processing module 160 is connected to the timing control module 130; The image processing module 160 determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data. The timing control module 130 controls the refresh control module 140 to adjust the on / off state of each gate driving unit 121 and gate low voltage line 110 with the corresponding row scan line 150 based on the coordinate information or frequency domain division information.

[0028] The image processing module 160 includes an image processor. The coordinate information includes the vertical coordinates corresponding to display areas with different refresh rates, and the frequency domain division information includes the line scan data corresponding to the distribution of display areas with different refresh rates. For example, taking a 1920*1200 resolution as an example, if the vertical coordinates of the upper low refresh rate display area correspond to G1~G100, the vertical coordinates of the effective display area correspond to G101~G1100, the vertical coordinates of the lower low refresh rate display area correspond to G1101~G1200, and the blank area is set to 35; The number of refresh area rows recorded in the read / write registers of timing control module 130 is shown in the table below: Based on the above embodiments, alternatively, refer to the following: Figure 7 The display device also includes multiple rows of data lines 170 and a data drive module 180; The data driver module 180 is connected to each column of data lines 170, and the timing control module 130 is connected to the data driver module 180. The timing control module 130 is used to control the data driver module 180 to output a black level to each column of data lines 170 when the refresh control module 140 is in the off state and refreshes in the low-frequency display area.

[0029] The data driver module 180 includes a data driver chip. In the low refresh rate display area, the data driver module 180 performs black insertion processing when the refresh control module 140 is in the off state, that is, it outputs a black level to each column of data lines 170, thereby effectively saving power consumption.

[0030] Specifically, the timing control module 130 generates a display control signal based on the current image display data; the data driving module 180 adjusts the output data voltage to each column of data lines 170 according to the display control signal so that the display panel updates the display screen; when the data driving module 180 refreshes in the low-frequency display area according to the display control signal and the refresh control module 140 is in the off state, it outputs a black level to each column of data lines 170.

[0031] Figure 8 This is a flowchart illustrating a driving method for a display device provided in an embodiment of the present invention, as shown below. Figure 8 As shown, the driving method of this display device is executed using the display device provided in any embodiment of the present invention; A method for driving a display device includes: S110, the timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line, so as to adjust the gate selection drive number of each row scan line and adjust the refresh frequency of different areas of the display panel.

[0032] In this embodiment of the invention, the timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row scan line, thereby adjusting the gate selection driving number of each row scan line, adjusting the refresh frequency of different areas of the display panel, and thus reducing the power consumption of the display device.

[0033] Optionally, based on the above embodiments, the display device further includes an image processing module; the image processing module is connected to the timing control module.

[0034] Before the timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line, the following is also included: The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data.

[0035] The coordinate information includes the vertical coordinates corresponding to the display areas at different refresh rates, and the frequency domain division information includes the line scan data corresponding to the distribution of display areas at different refresh rates.

[0036] The timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line, including: The timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line according to the coordinate information or frequency domain division information.

[0037] Specifically, the timing control module determines regions with different refresh frequencies based on coordinate information or frequency domain division information. The timing control module adjusts the on / off state of each gate driving unit with the corresponding row scan line when transmitting the gate selection driving level according to the refresh frequency of each display region, thereby adjusting the refresh frequency of different regions of the display panel.

[0038] The timing control module controls each gate driving unit in the display area with a high refresh rate to conduct more times with the corresponding row scan line when transmitting the gate selection drive level, and controls each gate driving unit in the display area with a low refresh rate to conduct less times with the corresponding row scan line when transmitting the gate selection drive level, thereby adjusting the refresh rate of different areas of the display panel.

[0039] Based on the above embodiments, optionally, the display device further includes multiple rows of data lines and a data driving module; the data driving module is connected to each row of data lines, and the timing control module is connected to the data driving module.

[0040] After the timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line, the following is also included: S210, The timing control module generates a display control signal based on the current image display data; Specifically, the display control signals include pixel image data and timing control synchronization signals; the timing control synchronization signals include pixel clock, line start pulse, data latch signal, polarity reversal signal and line end signal.

[0041] The pixel image data consists of RGB pixel data (R / G / B serial / parallel digital data streams). The timing control module receives the current image display data, rearranges and re-timing it, and then outputs the RGB pixel data line by line to the data driver module to control which color and grayscale level each pixel displays. The pixel clock is the synchronization clock for the data driver module to sample the pixel data; the line start pulse is a signal marking the start of a line of data transmission; the data latch signal causes the data driver module to latch the pixel data in the shift register and output it to the pixel electrode; the polarity inversion signal controls the AC polarity reversal of the liquid crystal pixels to prevent liquid crystal aging and flicker; and the line end signal marks the end of a line of data transmission.

[0042] S220, the data drive module adjusts the output data voltage to each column of data lines according to the display control signal, so that the display panel updates the display screen.

[0043] The timing control module sends pixel image data, pixel clock, line start pulse, data latch signal, polarity reversal signal and line end signal to the data driving module, so that the data driving module writes grayscale voltage into the pixel according to precise timing, thereby controlling the display screen.

[0044] Based on the above embodiments, optionally, the data driving module adjusts the output data voltage of each column of data lines according to the display control signal, and further includes: the data driving module outputs a black level to each column of data lines when refreshing in the low-frequency display area according to the display control signal and the refresh control module is in the off state.

[0045] Among them, the data driving module performs black insertion processing when the display control signal refreshes in the low-frequency display area and the refresh control module is in the off state, that is, it outputs a black level for each column of data lines, which can effectively save power consumption.

[0046] Based on the above embodiments, optionally, after the data driving module adjusts the output data voltage to each column of data lines according to the display control signal, the method further includes: S310 The image processing module acquires image display data, uses the newly acquired image display data as the current image display data, and determines whether the display screen of the display panel needs to be adjusted based on the current image display data.

[0047] The image processing module can determine whether the image to be displayed on the display panel has changed from the image currently being displayed based on the current image display data, so that timely adjustments can be made.

[0048] S320. If the display screen of the display panel needs to be adjusted, return to the step of the image processing module to determine the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data.

[0049] S330. If the display screen of the display panel does not need to be adjusted, the data drive module continues to output data voltage to each column of data lines so that the display panel maintains the display screen.

[0050] Based on the above embodiments, optionally, Figure 9 This is a schematic flowchart illustrating another driving method for a display device provided in an embodiment of the present invention. Figure 9 As shown, the driving method of the display device includes: S410 The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data.

[0051] S420: The timing control module controls the refresh control module to adjust the on / off state of each gate drive unit and gate low voltage line with the corresponding row scan line according to the coordinate information or frequency domain division information.

[0052] S430, the timing control module generates display control signals based on the current image display data.

[0053] S440, the data driver module adjusts the output data voltage to each column of data lines according to the display control signal, so that the display panel updates the display screen.

[0054] S450: When the data driver module refreshes in the low-frequency display area according to the display control signal and the refresh control module is in the off state, it outputs a black level for each column of data lines.

[0055] S460: The image processing module acquires image display data and uses the newly acquired image display data as the current image display data.

[0056] S470: The image processing module determines whether the display screen of the display panel needs to be adjusted based on the current image display data; if the display screen of the display panel needs to be adjusted, it returns to step S410; if the display screen of the display panel does not need to be adjusted, it executes step S480.

[0057] The S480 data driver module maintains the output of data voltage to each column of data lines so that the display panel can keep displaying the image.

[0058] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0059] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display device, characterized in that, It includes a gate low-voltage line, a gate drive module, a timing control module, multiple refresh control modules, and multiple scan lines; The gate drive module includes multiple cascaded gate drive units, which are used to generate gate drive signals. Each of the gate driving units is connected to the first terminal of a refresh control module, the second terminal of all the refresh control modules is connected to the gate low voltage line, the third terminal of each of the refresh control modules is connected to a row of the scan lines, and the control terminal of all the refresh control modules is connected to the output terminal of the timing control module. The timing control module is used to control the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, so as to adjust the gate selection driving number of each row of scan lines and adjust the refresh frequency of different areas of the display panel.

2. The display device according to claim 1, characterized in that, The refresh control module includes a first P-type MOSFET and a first N-type MOSFET; The first terminal of the first P-type MOSFET serves as the first terminal of the refresh control module. The second terminal of the first P-type MOSFET is connected to the first terminal of the first N-type MOSFET and serves as the third terminal of the refresh control module. The second terminal of the first N-type MOSFET serves as the second terminal of the refresh control module. The control terminal of the first P-type MOSFET is connected to the control terminal of the first N-type MOSFET and serves as the control terminal of the refresh control module.

3. The display device according to claim 1, characterized in that, The refresh control module includes a second P-type MOSFET and a second N-type MOSFET. The first terminal of the second N-type MOSFET serves as the first terminal of the refresh control module. The second terminal of the second N-type MOSFET is connected to the first terminal of the second P-type MOSFET and serves as the third terminal of the refresh control module. The second terminal of the second P-type MOSFET serves as the second terminal of the refresh control module. The control terminal of the second P-type MOSFET is connected to the control terminal of the second N-type MOSFET and serves as the control terminal of the refresh control module.

4. The display device according to claim 1, characterized in that, It also includes an image processing module; The image processing module is connected to the timing control module; The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data. The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of the scan line based on the coordinate information or frequency domain division information.

5. The display device according to claim 1, characterized in that, It also includes multiple data lines and a data driver module; The data driving module is connected to each column of the data lines, and the timing control module is connected to the data driving module; The timing control module is used to control the data driving module to output a black level to each column of data lines when the data is refreshed in the low-frequency display area and the refresh control module is in the off state.

6. A driving method for a display device, characterized in that, The display device according to any one of claims 1-5 shall be used; The driving method for the display device includes: The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, so as to adjust the gate selection driving number of each row of scan lines and adjust the refresh frequency of different areas of the display panel.

7. The driving method for the display device according to claim 6, characterized in that, The display device further includes an image processing module; The image processing module is connected to the timing control module; Before the timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, the method further includes: The image processing module determines the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data; The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, including: The timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of the scan line according to the coordinate information or frequency domain division information.

8. The driving method for the display device according to claim 7, characterized in that, The display device also includes multiple rows of data lines and a data driving module; The data driving module is connected to each column of the data lines, and the timing control module is connected to the data driving module; After the timing control module controls the refresh control module to adjust the on / off state of each gate driving unit and the gate low voltage line with the corresponding row of scan lines, the method further includes: The timing control module generates a display control signal based on the current image display data; The data driving module adjusts the output data voltage to each column of data lines according to the display control signal, so that the display panel updates the display screen.

9. The driving method for the display device according to claim 8, characterized in that, The data driving module adjusts the output data voltage for each column of data lines according to the display control signal, and also includes: The data driving module outputs a black level to each column of data lines when refreshing in the low-frequency display area according to the display control signal and when the refresh control module is in the off state.

10. The driving method for the display device according to claim 8, characterized in that, After the data driving module adjusts the output data voltage for each column of data lines according to the display control signal, the method further includes: The image processing module acquires image display data, uses the newly acquired image display data as the current image display data, and determines whether the display screen of the display panel needs to be adjusted based on the current image display data. If the display screen of the display panel needs to be adjusted, the process returns to the step of the image processing module determining the coordinate information or frequency domain division information of the multi-frequency display image based on the current image display data. If the display screen of the display panel does not need to be adjusted, the data driving module continues to output data voltage to each column of the data lines so that the display panel maintains the display screen.

Images