Gate driving circuit, display panel and display device

Abstract

The application discloses a gate driving circuit, a display panel and a display device. The gate driving circuit comprises a plurality of first GOA driving modules, a plurality of second GOA driving modules, a plurality of first switch modules and a plurality of second switch modules. When the display panel works in a high refresh rate mode, the first GOA driving module and the second GOA driving module connected with the same scanning wire can simultaneously output the same gate driving signal, so that the driving capability is improved, and the time corresponding to the rising edge of the corresponding high-level pulse is reduced. Through the first switch module and the second switch module, the level on the scanning wire can be avoided from affecting the non-working GOA driving module in the case of low refresh rate, meanwhile, the non-working GOA driving module can also be avoided from affecting the voltage on the scanning wire, unnecessary energy loss and device loss are reduced, and the overall service life of the gate driving circuit is improved.

Description

Technical Field

[0001] This application belongs to the field of display device technology, and in particular relates to gate driving circuits, display panels and display devices. Background Technology

[0002] Currently, LCD panels are a crucial component of display devices. An LCD panel comprises rows and columns of pixel units. During operation, the received gate drive signal controls the switching on and off of the thin-film transistors (TFTs) in the pixel units, thereby completing the row scanning of the LCD panel and enabling it to display images. The gate drive signal is generated by the row drive circuit. Common row drive circuits include Gate on Array (GOA) drive circuits and Chip on Film (COF) drive circuits. GOA drive circuits are widely used in display devices due to their advantages of narrow bezels and low cost. With increasing user demands, the ability to achieve adaptive refresh rates has become a critical requirement for LCD panels. The driving capability of the gate drive signal is one of the key factors affecting the refresh rate of the LCD panel. Utility Model Content

[0003] The purpose of this application is to provide a gate driving circuit, a display panel, and a display device, which aims to solve the problem of adaptive refresh rate in traditional display panels.

[0004] A first aspect of this application provides a gate driving circuit applied to a display panel, the display panel including multiple scan lines; the gate driving circuit includes: multiple first GOA driving modules, a first end of each scan line being connected to at least one first GOA driving module; multiple second GOA driving modules, a second end of each scan line being connected to at least one second GOA driving module; wherein the first GOA driving module and the second GOA driving module connected to the same scan line are used to output the same gate driving signal; multiple first switching modules, the first switching modules being connected between the output end of the first GOA driving module and the scan line; multiple second switching modules, the second switching modules being connected between the output end of the second GOA driving module and the scan line; wherein the first switching modules are configured to be turned on or off according to an input first control signal, and the second switching modules are configured to be turned on or off according to an input second control signal.

[0005] In one embodiment, the first switch module includes a first control switch connected between the output terminal of the first GOA driver module and the first end of the scan trace, and the control terminal of the first control switch is used to receive the first control signal; the second switch module includes a second control switch connected between the output terminal of the second GOA driver module and the second end of the scan trace, and the control terminal of the second control switch is used to receive the second control signal.

[0006] In one embodiment, the first GOA driving module includes a pull-up unit and an output unit; the pull-up unit is used to generate a charging voltage based on the first control signal, the first input terminal of the output unit is connected to the pull-up unit, the input terminal of the output unit is used to receive a clock signal, the output terminal of the output unit is connected to the first switch module, and the output unit is used to generate and output the gate driving signal according to the charging voltage and the clock signal; the first control switch is configured to be turned on when the first control signal is high.

[0007] In one embodiment, the first switch module is also connected to the first input terminal of the output unit, and the first switch module is also used to pull down the voltage of the first input terminal of the output unit when the first control signal is low.

[0008] In one embodiment, the first switch module further includes a third control switch, which is connected between the first input terminal of the output unit and the low-level trace. The control terminal of the third control switch is used to receive the third control signal, which is inverse of the first control signal.

[0009] In one embodiment, the circuit of the second GOA driving module is the same as that of the first GOA driving module; the pull-up unit of the second GOA driving module is used to generate a charging voltage based on the second control signal; the second control switch is configured to be turned on when the second control signal is high.

[0010] In one embodiment, the first GOA driving module further includes a cascade control unit, which is used to generate and output a cascade control signal, identical to the gate driving signal, for providing to other GOA driving modules, based on the charging voltage and the clock signal.

[0011] In one embodiment, the first GOA driving module further includes a pull-down holding unit, which is connected to the first input terminal and the output terminal of the output unit. The pull-down holding unit is used to control the output unit to stop outputting the gate driving signal during the non-row scanning period of the first GOA driving module.

[0012] A second aspect of the application provides a display panel including multiple scan lines and a gate driving circuit as described above, wherein the gate driving circuit is connected to each of the scan lines.

[0013] A third aspect of this application provides a display device, including a driving module and a display panel as described above, wherein the driving module is connected to the display panel and is used to provide a first control signal and a second control signal.

[0014] The beneficial effects of this application embodiment compared to the prior art are as follows: the first GOA driving module and the second GOA driving module connected to the same scan trace can simultaneously output the same gate driving signal, thereby improving driving capability and reducing the rise time of the corresponding high-level pulse, so that the display panel can have a higher refresh rate. When the display panel is working in a low refresh rate mode, the first switch module and the second switch module connected between the GOA driving module and the scan trace can control the output gate driving signal of one of the first GOA driving module and the second GOA driving module. This can prevent the level on the scan trace from affecting the non-working GOA driving module, and at the same time, it can also prevent the non-working GOA driving module from affecting the voltage on the scan trace, reducing unnecessary energy loss and device loss, and ultimately improving the overall lifespan of the gate driving circuit. Attached Figure Description

[0015] Figure 1 A schematic diagram of a gate driving circuit provided in an embodiment of this application; Figure 2 A waveform diagram of a high-level pulse on a scan trace provided in an embodiment of this application; Figure 3 A detailed circuit diagram of the first GOA driving module and the first switching module in the nth row provided in an embodiment of this application; Figure 4 Waveform diagrams of various clock signals and various control signals corresponding to the first and second operating states provided in an embodiment of this application; Figure 5 The waveforms of each clock signal and each control signal in high refresh rate mode provided in an embodiment of this application; Figure 6 A schematic diagram of a display panel provided in one embodiment of this application; Figure 7 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0016] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0017] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0018] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] Figure 1 A schematic diagram of a gate driving circuit according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows: A gate driving circuit 10 can be applied to a display panel, which includes multiple scan lines 100. One scan line 100 can be connected to the gate of a thin-film transistor in a row of pixel units to transmit a gate driving signal (i.e., a scan signal). When the gate driving signal is transmitted to the scan line 100, a high-level pulse is generated on the scan line 100, and the pixel unit connected to the scan line 100 is charged when the voltage on the scan line 100 is high. Figure 2As shown, a high-level pulse includes a rising edge and a falling edge. The longer the time Tr corresponding to the rising edge, the later the corresponding thin-film transistor will turn on. In the case of a high refresh rate, this may affect the charging of the corresponding pixel unit.

[0021] like Figure 1 As shown, the gate drive circuit 10 includes: a plurality of first GOA drive modules 200, a plurality of second GOA drive modules 300, a plurality of first switch modules 400 and a plurality of second switch modules 500.

[0022] A first end of the scan line 100 is connected to at least one first GOA driving module 200; a second end of the scan line 100 is connected to at least one second GOA driving module 300; wherein the first GOA driving module 200 and the second GOA driving module 300 connected to the same scan line 100 are used to output the same gate driving signal. Specifically, the first GOA driving module 200 connected to the first row of scan lines 100 is the first GOA driving module 200 of the first row, and the second GOA driving module 300 connected to the first row of scan lines 100 is the second GOA driving module 300 of the first row, used to output the same gate driving signal G1, and so on, the first GOA driving module 200 and the second GOA driving module 300 of the nth row connected to the nth row of scan lines 100 are used to output the same gate driving signal Gn. The scan line 100 can be located in the display area of ​​the display panel, and the first GOA driving module 200 and the second GOA driving module 300 can be located on opposite sides of the display area of ​​the display panel. For example, Figure 3 The circuit diagram of the first GOA driving module 200 and the corresponding first switch module 400 in the nth row is shown.

[0023] The second switch module 500 is connected between the output terminal of the second GOA drive module 300 and the scan trace 100; wherein, the first switch module 400 is configured to turn on or off according to the first control signal, and the second switch module 500 is configured to turn on or off according to the second control signal.

[0024] When the display panel operates in low refresh rate mode, among the first GOA driver module 200 and the second GOA driver module 300 connected to the same scan line 100, only one GOA driver module can output the gate drive signal, thereby reducing the operating time of each GOA driver module and extending its lifespan. When the display panel operates in high refresh rate mode, the first GOA driver module 200 and the second GOA driver module 300 connected to the same scan line 100 can simultaneously output the same gate drive signal, thereby improving driving capability and shortening the rise time of the corresponding high-level pulse.

[0025] By connecting the first switch module 400 and the second switch module 500 between the GOA driver module and the scan line 100, when the display panel is working in a low refresh rate mode (i.e., only one of the first GOA driver module 200 and the second GOA driver module 300 outputs a gate drive signal), the level on the scan line 100 can be prevented from affecting the non-working GOA driver module through signal coupling. At the same time, the non-working GOA driver module can also be prevented from affecting the voltage on the scan line 100, reducing unnecessary energy loss and device loss, and ultimately improving the overall lifespan of the gate drive circuit 10.

[0026] In one embodiment, such as Figure 3 As shown, the first switch module 400 includes a first control switch S1, which is connected between the output terminal of the first GOA drive module 200 and the first end of the scan trace 100. The control terminal of the first control switch S1 is used to receive the first control signal LC1.

[0027] The second switch module 500 includes a second control switch, which is connected between the output terminal of the second GOA drive module 300 and the second end of the scan trace 100. The control terminal of the second control switch is used to receive the second control signal LC2.

[0028] Understandably, the first control signal LC1 can be used to control the on and off of the first control switch S1, and the second control signal LC2 can be used to control the on and off of the second control switch. When the first control switch S1 is on, the first GOA driving module 200 of the nth row can output the gate driving signal Gn to the corresponding scan line 100 of the nth row. When the second control switch is on, the second GOA driving module 300 of the nth row can output the gate driving signal Gn to the corresponding scan line 100 of the nth row.

[0029] When the first control switch S1 is off, the first GOA drive module 200 is not affected by the voltage on the scan trace 100, and when the second control switch is off, the second GOA drive module 300 is not affected by the voltage on the scan trace 100.

[0030] When the display panel is operating at a low refresh rate, the second control switch can be turned off when the first GOA driver module 200 outputs the gate drive signal Gn, and the first control switch S1 can be turned off when the second GOA driver module 300 outputs the gate drive signal Gn. When the display panel is operating at a high refresh rate, the first control switch S1 and the second control switch can be turned on simultaneously.

[0031] In one embodiment, such as Figure 3 As shown, the first GOA driver module 200 includes a pull-up unit 210 and an output unit 220. It can be understood that the circuit structures of each GOA driver module and each switch module are identical. Figure 3 The first GOA driver module 200 in the nth row and the first switch module 400 in the nth row are shown.

[0032] Pull-up unit 210 is used to generate charging voltage based on the first control signal LC1. The first input terminal of output unit 220 is connected to pull-up unit 210. The input terminal of output unit 220 is used to receive clock signal CLKn. The output terminal of output unit 220 is connected to the first switch module 400. Output unit 220 is used to generate and output gate drive signal Gn according to charging voltage and clock signal CLKn.

[0033] The first control switch S1 is configured to be turned on when the first control signal LC1 is high.

[0034] Understandably, when the first control signal LC1 is high, the pull-up unit 210 can generate a charging voltage based on the high level of the first control signal LC1 according to the corresponding cascaded control signal Tn-4. After charging the output unit 220, the output unit 220 can generate and output the gate drive signal Gn according to the clock signal CLKn. Therefore, when the first control signal LC1 is high, turning on the first control switch S1 will enable the output unit 220 to transmit the gate drive signal Gn to the scan line 100.

[0035] Accordingly, when the output unit 220 does not need to output the gate drive signal Gn, the first control signal LC1 can be set to a low level. At the same time as the pull-up unit 210 stops outputting the charging voltage, the first control switch S1 can be turned off to disconnect the connection between the scan line 100 and the first GOA drive module 200.

[0036] For example, such as Figure 3 As shown, the pull-up unit 210 includes a first switching device Q1. The first terminal of the first switching device Q1 receives a first control signal LC1, and the second terminal of the first switching device Q1 is connected to the first input terminal of the output unit 220. The control terminal of the first switching device Q1 is connected to other GOA driver modules to obtain a cascaded control signal Tn-4. During the first switching period, when Q1 is on and the first control signal LC1 is high, the pull-up unit 210 can provide a charging voltage to the first input terminal of the output unit 220.

[0037] In some embodiments, the control terminal of the first switching device Q1 can also be connected to a corresponding control signal so that the first switching device Q1 is continuously turned on during the operation of the display panel, and the charging voltage is controlled by controlling the level of the first control signal LC1.

[0038] For example, such as Figure 3 As shown, the output unit 220 includes an energy storage capacitor C1 and a second switching device Q2. The first end of the energy storage capacitor C1 is connected to the second end of the first switching device Q1 and the control end of the second switching device Q2. The first end of the second switching device Q2 is used to receive the clock signal CLKn. The second end of the second switching device Q2 and the second end of the energy storage capacitor C1 are both connected to the scan line 100 through the first control switch S1, and are used to output the gate drive signal Gn.

[0039] The charging voltage output by the pull-up unit 210 can charge the energy storage capacitor C1, thereby pulling up the voltage of the first input terminal of the output unit 220, so that the second switching device Q2 is turned on, and the corresponding gate drive signal Gn is generated based on the clock signal CLKn.

[0040] In one embodiment, such as Figure 3 As shown, the first switch module 400 is also connected to the first input terminal of the output unit 220, and the first switch module 400 is also used to pull down the voltage of the first input terminal of the output unit 220 when the first control signal LC1 is low.

[0041] Understandably, by lowering the voltage at the first input terminal of the output unit 220, the charge stored in the output unit 220 can be released, causing the output unit 220 to stop working.

[0042] In one embodiment, such as Figure 3 As shown, the first switch module 400 also includes a third control switch S3. The third control switch S3 is connected between the first input terminal of the output unit 220 and the low-level trace. The control terminal of the third control switch S3 is used to receive the third control signal LC3. The third control switch S3 is configured to be turned on when the third control signal LC3 is high. The third control signal LC3 is inversely related to the first control signal LC1. The low-level trace can be used to provide a low-level signal VSS.

[0043] It is understandable that when both the first control switch S1 and the third control switch S3 are high-level conducting, by inverting the third control signal LC3 with the first control signal LC1, one of the first control switch S1 and the third control switch S3 can be turned on and the other off simultaneously. In some embodiments, the first control signal LC1 can be inverted using an inverter to obtain the third control signal LC3.

[0044] In one embodiment, the circuitry of the second GOA driver module 300 is identical to that of the first GOA driver module 200. It is understood that the second GOA driver module 300 also includes a pull-up unit 210 and an output unit 220. The pull-up unit 210 of the second GOA driver module 300 is used to generate a charging voltage based on a second control signal LC2; the second control switch is configured to be turned on when the second control signal LC2 is high.

[0045] Specifically, it can be understood that the output unit 220 of the second GOA driving module 300 outputs the gate driving signal Gn based on the charging voltage output by the pull-up unit 210 of the second GOA driving module 300 and the corresponding clock signal CLKn.

[0046] In some embodiments, the second switch module 500 further includes a fourth control switch, which is connected between the first input terminal of the output unit 220 of the second GOA drive module 300 and the low-level trace. The control terminal of the fourth control switch is used to receive a fourth control signal LC4, which is inversely related to the second control signal LC2.

[0047] It is understandable that when the first control switch S1, the third control switch S3, the second control switch, and the fourth control switch are all high-level conducting, if the first GOA driver module 200 and the second GOA driver module 300 need to simultaneously output gate drive signals Gn, the waveforms of the first control signal LC1 and the second control signal LC2 can be made the same, and the waveforms of the third control signal LC3 and the fourth control signal LC4 can be made the same. Similarly, if only one of the first GOA driver module 200 or the second GOA driver module 300 needs to output a gate drive signal Gn, the waveforms of the first control signal LC1 and the fourth control signal LC4 can be made the same, and the waveforms of the second control signal LC2 and the third control signal LC3 can be made the same. This achieves control signal multiplexing and reduces the requirements for the circuitry that generates the control signals.

[0048] In one embodiment, the first GOA driving module 200 further includes a cascade control unit 230, which is used to generate and output a cascade control signal Tn, which is the same as the gate driving signal Gn, for providing to other GOA driving modules, based on the charging voltage and clock signal CLKn.

[0049] It should be noted that the pull-up unit 210 needs to complete charging before the output unit 220 outputs the gate drive signal Gn. Therefore, the first GOA driver module 200 in the nth row can generate a charging voltage based on the cascade control signal Tn-4 provided by other GOA driver modules (e.g., the first GOA driver module 200 in the n-4th row). The cascade control signal Tn output by the cascade control unit 230 can be used to control the pull-up units 210 of other first GOA driver modules 200.

[0050] For example, the cascade control unit 230 can generate a corresponding cascade control signal Tn based on the clock signal CLKn through the third switching device Q3.

[0051] In one embodiment, the first GOA driving module 200 further includes a pull-down holding unit 240, which is connected to the first input terminal and the output terminal of the output unit 220. The pull-down holding unit 240 is used to control the output unit 220 to stop outputting the gate driving signal Gn during the non-row scanning period of the first GOA driving module 200.

[0052] Specifically, the pull-down holding unit 240 can pull down the voltage at the first input terminal and the output terminal of the output unit 220 during the non-row scan of the first GOA driving module 200.

[0053] For example, the pull-down holding unit 240 can pull down the voltage of the first terminal of the energy storage capacitor C1, the second terminal of the energy storage capacitor C1, and the second terminal of the third switch Q3 to a low level through the fourth switch Q8, the fifth switch Q9, and the sixth switch Q10, respectively, thereby releasing the charge stored on the energy storage capacitor C1 and completing the pull-down of the cascaded control signal Tn.

[0054] In one embodiment, the first GOA driver module 200 further includes a pull-down unit 250 and a reset unit 260. The pull-down unit 250 can be connected to the first input terminal of the output unit 220, and upon receiving a reset signal Reset, it can assist the pull-down holding unit 240 in pulling down the voltage of the first input terminal of the output unit 220. The reset signal Reset received by the first GOA driver module 200 in the nth row can be the cascaded control signal Tn+6 output by the first GOA driver module 200 in the (n+6)th row. The reset unit 260 is connected to both the first input terminal and the output terminal of the output unit 220, and is used to pull down the voltages of both terminals according to the initialization signal CLR.

[0055] In some embodiments, the plurality of scan lines 100 include a plurality of first scan lines 100 and a plurality of second scan lines 100, wherein the first scan lines 100 are used to connect to pixel units in odd-numbered rows, and the second scan lines 100 are used to connect to pixel units in even-numbered rows.

[0056] When the display panel is operating in a low refresh rate mode, the gate drive circuit 10 can be cyclically operated in a first operating state and a second operating state, with each clock signal corresponding to the first operating state and the second operating state being ( Figure 4 The diagram shows clock signals CLK1~CLK8 and various control signals ( Figure 4 The waveforms of control signals LC1~LC4 are shown in the figure. Figure 4 As shown, in the first working state, the first GOA driving module 200 connected to the first scan line 100 can be made to output the gate driving signal Gn and the second GOA driving module 300 can be made to stop working, and the second GOA driving module 300 connected to the second scan line 100 can be made to output the gate driving signal Gn and the first GOA driving module 200 connected to the second scan line 100 can be made to stop working; in the second working state, the second GOA driving module 300 connected to the first scan line 100 can be made to output the gate driving signal Gn and the first GOA driving module 200 can be made to stop working, and the first GOA driving module 200 connected to the second scan line 100 can be made to output the gate driving signal Gn and the second GOA driving module 300 connected to the second scan line 100 can be made to stop working.

[0057] By cyclically operating the gate drive circuit 10 in the first and second operating states, the various GOA drive modules can work alternately, which can prevent a single GOA drive module from working for a long time and thus extend the service life of each GOA drive module.

[0058] When the pull-up unit 210 of the first GOA driver module 200 in the nth row receives the cascading control signal Tn-4 provided by the first GOA driver module 200 in the (n-4th)th row, and the reset signal Reset received by the pull-down unit 250 of the first GOA driver module 200 in the nth row is the cascading control signal Tn+6 output by the first GOA driver module 200 in the (n+6th)th row, it is possible to achieve that the even-numbered first GOA driver modules 200 and the odd-numbered first GOA driver modules 200 are independent of each other and do not interfere with each other.

[0059] In some embodiments, in the first working state, all first GOA driving modules 200 can be made to output gate driving signals Gn and all second GOA driving modules 300 can be made to stop working; in the second working state, all second GOA driving modules 300 can be made to output gate driving signals Gn and all first GOA driving modules 200 can be made to stop working.

[0060] When the display panel is operating in high refresh rate mode, various clock signals ( Figure 5 The diagram shows clock signals CLK1~CLK8 and various control signals ( Figure 5 The waveforms of control signals LC1~LC4 are shown in the figure. Figure 5 As shown, at this time, the first GOA driving module 200 and the second GOA driving module 300, which are connected to the same scan line 100, can simultaneously output the same gate driving signal Gn to improve the driving capability and shorten the time corresponding to the rising edge of the high-level pulse.

[0061] Figure 6 A schematic diagram of a display panel according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows: A display panel 20 includes multiple scan lines 100 and a gate driving circuit 10 as described in any of the above embodiments, wherein the gate driving circuit 10 is connected to each scan line 100.

[0062] Since the display panel 20 includes the gate driving circuit 10 of any of the above embodiments, the display panel 20 has the beneficial effects of the gate driving circuit 10 of any of the above embodiments, which will not be described again here.

[0063] In some embodiments, the display panel 20 may specifically be a liquid crystal display panel.

[0064] Figure 7 A schematic diagram of a display device according to an embodiment of this application is shown. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows: A display device 30 includes a control module 40 and a display panel 20 as described in any of the above embodiments. The control module 40 is connected to the display panel 20 and is used to provide a first control signal LC1 and a second control signal LC2.

[0065] Since the display device 30 includes the display panel 20 of any of the above embodiments, the display device 30 has the beneficial effects of the display panel 20 of any of the above embodiments, which will not be described again here.

[0066] In some embodiments, the control module 40 includes a driver chip, logic control circuit, etc.

[0067] In some embodiments, the display device 30 may specifically be a smart device such as a mobile phone or a computer.

[0068] From the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0069] It should be understood that the apparatuses and methods disclosed in the several embodiments provided in this application can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components being combined or integrated into another device. In addition, some features may be omitted or not performed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0070] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units. That is, it can be located in one place or distributed in multiple different locations. Depending on the actual needs, some or all of the units can be selected to achieve the purpose of this solution.

[0071] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit; they can also exist physically separately; or some units can be integrated into one unit while others exist physically separately. The integrated units described above can be implemented in hardware or as software functional units.

[0072] It should be noted that all or part of the above embodiments provided in this application (e.g., part or all of any feature) can be arbitrarily combined or combined with each other.

[0073] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gate driving circuit, characterized in that, Applied to a display panel, the display panel including multiple scan lines; The gate driving circuit includes: Multiple first GOA driving modules, wherein the first end of the scan trace is connected to at least one first GOA driving module; Multiple second GOA driving modules are provided, and the second end of the scan trace is connected to at least one second GOA driving module; wherein the first GOA driving module and the second GOA driving module connected to the same scan trace are used to output the same gate driving signal. Multiple first switch modules are connected between the output terminal of the first GOA drive module and the scan trace; Multiple second switch modules are connected between the output of the second GOA driver module and the scan trace; wherein, the first switch module is configured to turn on or off according to the first control signal, and the second switch module is configured to turn on or off according to the second control signal.

2. The gate driving circuit as described in claim 1, characterized in that, The first switch module includes a first control switch, which is connected between the output terminal of the first GOA drive module and the first end of the scan trace. The control terminal of the first control switch is used to receive the first control signal. The second switch module includes a second control switch, which is connected between the output terminal of the second GOA drive module and the second end of the scan trace. The control terminal of the second control switch is used to receive the second control signal.

3. The gate driving circuit as described in claim 2, characterized in that, The first GOA driver module includes: a pull-up unit and an output unit; The pull-up unit is used to generate a charging voltage based on the first control signal. The first input terminal of the output unit is connected to the pull-up unit. The input terminal of the output unit is used to receive a clock signal. The output terminal of the output unit is connected to the first switch module. The output unit is used to generate and output the gate drive signal according to the charging voltage and the clock signal. The first control switch is configured to be turned on when the first control signal is high.

4. The gate driving circuit as described in claim 3, characterized in that, The first switch module is also connected to the first input terminal of the output unit, and the first switch module is also used to pull down the voltage of the first input terminal of the output unit when the first control signal is low.

5. The gate driving circuit as described in claim 4, characterized in that, The first switch module further includes a third control switch, which is connected between the first input terminal of the output unit and the low-level trace. The control terminal of the third control switch is used to receive a third control signal. The third control switch is configured to be turned on when the third control signal is high. The third control signal is inverse of the first control signal.

6. The gate driving circuit as described in claim 3, characterized in that, The circuit of the second GOA driver module is the same as that of the first GOA driver module; The pull-up unit of the second GOA driver module is used to generate a charging voltage based on the second control signal; the second control switch is configured to be turned on when the second control signal is high.

7. The gate driving circuit according to any one of claims 3 to 6, characterized in that, The first GOA driving module further includes a cascade control unit, which is used to generate and output a cascade control signal, identical to the gate driving signal, for use in other GOA driving modules, based on the charging voltage and the clock signal.

8. The gate driving circuit as described in claim 7, characterized in that, The first GOA driving module further includes a pull-down holding unit, which is connected to the first input terminal and the output terminal of the output unit. The pull-down holding unit is used to control the output unit to stop outputting the gate driving signal during the non-row scanning period of the first GOA driving module.

9. A display panel, characterized in that, It includes multiple scan lines and a gate driving circuit as described in any one of claims 1 to 8, wherein the gate driving circuit is connected to each of the scan lines.

10. A display device, characterized in that, It includes a control module and a display panel as described in claim 9, wherein the control module is connected to the display panel and is used to provide a first control signal and a second control signal.

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