WO2024045452A1

WO2024045452A1 - Gate drive circuit and display apparatus

Info

Publication number: WO2024045452A1
Application number: PCT/CN2022/143459
Authority: WO
Inventors: 沈婷婷; 李荣荣
Original assignee: 惠科股份有限公司
Priority date: 2022-08-29
Filing date: 2022-12-29
Publication date: 2024-03-07
Also published as: CN115294915A; CN115294915B

Abstract

A gate drive circuit and a display apparatus. The gate drive circuit comprises: an output module (10), a coupling capacitor C, a pre-charging module (20) and a boost module (30), wherein the output module (10) is used for outputting a gate drive signal Gn; a first end of the coupling capacitor C is connected to the output module (10); the pre-charging module (20) is connected to the first end of the coupling capacitor C, the pre-charging module (20) is used for providing a first voltage Vdd for the first end of the coupling capacitor C, and the output module (10) outputs the gate drive signal Gn in response to the first voltage Vdd; and the boost module (30) is connected to a second end of the coupling capacitor C, and the boost module (30) is used for providing a second voltage for the second end of the coupling capacitor C, so as to couple and boost the first voltage Vdd. By means of the present drive circuit, the influence of aging of a TFT device can be reduced.

Description

Gate drive circuit and display device

This application claims priority to the Chinese patent application filed with the China Patent Office on August 29, 2022, with application number 2022110617360 and the application name "Gate Drive Circuit and Display Device", the entire content of which is incorporated into this application by reference. .

Technical field

The present application relates to the field of display driving technology, and in particular to a gate driving circuit and a display device.

Background technique

The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

In the display panel, the gate drive circuit realizes the signal output of the gate drive circuit through the coupling effect of TFT (Thin Film Transistor, thin film transistor) device and capacitor. Among them, the capacitor receives the electrical signal from the output end of the TFT device, and increases its own voltage through the capacitive coupling of the TFT device according to the electrical signal of the TFT device. However, as time goes by, TFT devices have problems such as aging and unstable characteristics. It will cause the signal output by the TFT device to deteriorate, thereby affecting the coupling effect of the capacitor, resulting in abnormal display of the display panel.

Contents of the invention

One purpose of this application is to provide a gate drive circuit and a display device that can reduce the impact of aging of the TFT device, ensure smooth coupling of the capacitor, and ensure the display effect of the display panel.

According to one aspect of the present application, the present application provides a gate driving circuit, which includes:

An output module, the output module is used to output the gate drive signal;

A coupling capacitor, the first end of the coupling capacitor is connected to the output module;

A precharge module, the precharge module is connected to the first end of the coupling capacitor, the precharge module is used to provide a first voltage to the first end of the coupling capacitor, and the output module responds to the first voltage to output the gate drive signal; and

A boost module is connected to the second end of the coupling capacitor, and is used to provide a second voltage to the second end of the coupling capacitor to increase the first voltage through coupling.

In addition, in order to solve the above problems, the present application also provides a display device. The display device includes a display panel. The display panel has a display area and a non-display area. The non-display area is provided around the display area. The display device further includes a pixel driving circuit and a gate driving circuit as described above. The pixel driving circuit is connected to the data line of the gate driving circuit. The gate driving circuit is disposed in the non-display area. The pixel driving circuit is provided in the display area.

In the technical solution of this application, the precharge module outputs a first voltage to the first terminal of the coupling capacitor, and the boost module outputs a second voltage to the second terminal of the coupling capacitor. Loading a second voltage on the second end of the coupling capacitor increases the voltage on the second end of the coupling capacitor. Through capacitive coupling, the voltage at the first terminal of the coupling capacitor increases as the voltage at the second terminal increases. This ensures that the output module can output the gate drive signal more smoothly. Among them, the signal sources at the first and second ends of the coupling capacitor avoid the output end of the output module, and the aging of the TFT switch in the output module will not affect the coupling effect of the coupling capacitor. In this way, the coupling capacitor can smoothly couple and ensure the display effect of the display panel.

It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application.

Description of drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a gate driving circuit according to the first embodiment of the present application.

FIG. 2 is a simplified structural schematic diagram of the gate driving circuit in FIG. 1 of the present application.

FIG. 3 is a timing control diagram of the gate drive circuit in FIG. 2 of the present application.

FIG. 4 is a timing control diagram of the gate drive circuit in FIG. 1 of the present application.

FIG. 5 is a schematic structural diagram of a display device according to a second embodiment of the present application.

Embodiments of the invention

Although the present application may readily be embodied in different forms, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification, and it will be understood that this description should be considered as the present invention. is an illustrative illustration of the principles of the application and is not intended to limit the application to that described herein.

Thus, a feature noted in this specification will be used to describe one of the features of an embodiment of the application, but does not imply that every embodiment of the application must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined together to illustrate possible system designs, the features may also be used in other, not expressly illustrated, combinations. Thus, unless otherwise stated, the illustrated combinations are not intended to be limiting.

In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of the various elements of the present application are not absolute but relative. These descriptions are appropriate when the elements are in the position shown in the drawings. If the instructions for the location of these elements change, the instructions for these directions will change accordingly.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this description will be thorough and complete and will convey the concepts of the example embodiments fully communicated to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and thus their repeated description will be omitted.

The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of this specification.

Embodiment 1

Referring to FIGS. 1 and 2 , this application provides a gate drive circuit. The gate drive circuit of this application includes: an output module 10 , a coupling capacitor C, a precharge module 20 and a boost module 30 . The output module 10 is provided with an output terminal 120. The output module 10 is used to output the gate driving signal Gn. The gate driving signal Gn is transmitted to the pixel driving circuit through the output terminal 120.

The first end of the coupling capacitor C is connected to the output module 10; the coupling capacitor C is provided with two electrode plates, a first electrode plate C1 and a second electrode plate C2. The first electrode plate C1 and the second electrode plate C2 are arranged oppositely. The first electrode plate C1 is the first terminal of the coupling capacitor C, and the second electrode plate C2 is the second terminal of the coupling capacitor C.

The precharge module 20 is connected to the first end of the coupling capacitor C. The precharge module 20 is used to provide the first voltage Vdd to the first end of the coupling capacitor C. The output module 10 responds to the first voltage Vdd to output the gate driving signal Gn; A voltage Vdd is greater than the threshold voltage of the output module 10. The first voltage Vdd is loaded to the first end of the coupling capacitor C, which is equivalent to being loaded to the control end of the output module 10. After the control end of the output module 10 receives the first voltage Vdd, The output terminal 120 of the output module 10 outputs the gate driving signal Gn.

The first voltage Vdd can already ensure that the output module 10 outputs the gate drive signal Gn. However, in order to ensure that the output module 10 can function more fully, the voltage value of the first voltage Vdd needs to be increased. To this end, the boost module 30 is connected to the second terminal of the coupling capacitor C. The boost module 30 is used to provide a second voltage to the second terminal of the coupling capacitor C. After the second terminal of the coupling capacitor C is loaded with the second voltage, The voltage at the second end of the coupling capacitor C is increased, and through the capacitive coupling effect of the coupling capacitor C, the increased voltage difference at the second end is coupled to the first end to couple to increase the first voltage Vdd. That is, the first terminal of the coupling capacitor C is also raised by the same voltage difference.

In this embodiment, the precharge module 20 outputs the first voltage Vdd to the first terminal of the coupling capacitor C, and the boost module 30 outputs the second voltage to the second terminal of the coupling capacitor C. Loading a second voltage on the second end of the coupling capacitor C increases the voltage on the second end of the coupling capacitor C. Through capacitive coupling, the voltage at the first terminal of the coupling capacitor C increases as the voltage at the second terminal increases. This ensures that the output module 10 can output the gate driving signal Gn more smoothly. Among them, the signal sources of the first end and the second end of the coupling capacitor C avoid the output end 120 of the output module 10, that is, there is no need to provide a loading signal through the output end 120 of the output module 10 to increase the voltage of the second end. The output module The aging of the TFT switch in 10 will not affect the coupling effect of the coupling capacitor C. In this way, the coupling capacitor C can perform the coupling function smoothly and ensure the display effect of the display panel 50 .

Further, the output module 10 includes a driving switch T0, which is a thin film transistor switch, that is, the driving switch T0 is a TFT switch. TFT switches have the advantages of fast response speed. The control end of the driving switch T0 is connected to the first end of the coupling capacitor C, and the control end of the driving switch T0 is used to respond to the first voltage Vdd; the control end of the output module 10 is the control end of the driving switch T0, and the first voltage Vdd is greater than the driving switch The threshold voltage of T0, after the control terminal of the driving switch T0 receives the first voltage Vdd, the first terminal and the second terminal of the driving switch T0 are turned on. The gate driving signal Gn is output from the first terminal of the driving switch T0 to the second terminal of the driving switch T0.

Moreover, in order to better control the functions of the pre-charge module 20 and the boost module 30, the pre-charge module 20 includes a first response switch T1. The first response switch T1 is used to respond to the first scan signal G1 to change the first voltage Vdd. is applied to the first end of the coupling capacitor C; when the first end and the second end of the driving switch T0 need to be turned on, the first response switch T1 is made to function. After the first response switch T1 receives the first scanning signal G1, the first response switch T1 intervenes, and the first end and the second end of the first response switch T1 are turned on, so that the first voltage Vdd passes through the first response switch T1 The first terminal is output to the second terminal to complete the loading of the first voltage Vdd.

The boost module 30 includes a second response switch T2 , which is configured to respond to the second scan signal G2 to apply a second voltage to the second end of the coupling capacitor C. After the first terminal and the second terminal of the driving switch T0 are turned on, in order to make the driving switch T0 open more fully, the second response switch T2 comes into play. After the second response switch T2 receives the second scan signal G2, the second response switch T2 intervenes, and the first end and the second end of the second response switch T2 are turned on, so that the second voltage passes through the second end of the second response switch T2. The first terminal is output to the second terminal to complete loading of the second voltage.

The specific connection method of the first response switch T1 is: the control end of the first response switch T1 is connected to the first scan line 210, the first scan line 210 is used to provide the first scan signal G1, and the first end of the first response switch T1 is connected to The first end and the second end of the coupling capacitor C are connected to the first power supply terminal 220, and the first power supply terminal 220 is used to provide the first voltage Vdd; one end of the first scan line 210 is connected to the first response switch T1, and the other end is connected to the first response switch T1. Signal terminal 230. The first signal terminal 230 is used to provide a first scanning signal G1. The first scanning signal G1 is transmitted to the control terminal of the first response switch T1 through the first scanning line 210. After the control terminal of the first response switch T1 receives the first scanning signal G1, the first terminal and the second terminal of the first response switch T1 are turned on, and the first voltage Vdd provided by the first power supply terminal 220 is loaded on the coupling capacitor C. First end.

The specific connection method of the second response switch T2 is: the control end of the second response switch T2 is connected to the second scan line 310, the second scan line 310 is used to provide the second scan signal G2, and the first end of the second response switch T2 is connected to The second end of the coupling capacitor C is connected to the second power supply terminal 320, and the second power supply terminal 320 is used to provide the second voltage; after the control terminal of the second response switch T2 receives the second scanning signal G2, the second response switch T2 The first terminal and the second terminal of the switch T2 are turned on, and the second voltage provided by the second power supply terminal 320 is loaded onto the second terminal of the coupling capacitor C.

The output module 10 also includes a clock signal CK terminal 110. The clock signal CK terminal 110 is used to provide the gate driving signal Gn. The clock signal CK terminal 110 is connected to the first terminal of the driving switch T0. The control terminal of the driving switch T0 responds to the first voltage Vdd. , transmitting the gate driving signal Gn to the second terminal of the driving switch T0. After the control terminal of the driving switch T0 receives the first voltage Vdd, the first terminal and the second terminal of the driving switch T0 are turned on, and the gate driving signal Gn provided by the clock signal CK terminal 110 is transmitted to the second terminal of the driving switch T0. Start providing driving signals to the pixel driving circuit.

In order to simplify the circuit structure and reduce the wiring arrangement. The first power supply terminal 220 and the second power supply terminal 320 are the same power supply terminal, and the first voltage Vdd and the second voltage are equal. That is, the first terminal of the first response switch T1 and the first terminal of the second response switch T2 are connected to the same power supply terminal. The same power supply terminal provides the loading voltage to the first and second terminals of the coupling capacitor C, which saves the design of the power supply terminal and the wiring location, thereby simplifying the circuit structure.

Further, the second scan line 310 is connected to the clock signal CK terminal 110, and the gate drive signal Gn and the second scan signal G2 are the same signal. The control terminal of the second response switch T2 is connected to the first terminal of the drive switch T0, and the clock signal CK terminal 110 provides an opening signal for the second response switch T2, thereby reducing the arrangement of additional signal terminals and thereby saving space.

Of course, according to needs, in order to enable the driving switch T0 and the second response switch T2 to complete circuit driving more flexibly, the control terminal of the second response switch T2 can be provided with an independent signal terminal.

In order to make the coupling capacitor C complete the coupling function more effectively, the gate drive circuit also includes a pull-down module 40. The pull-down module 40 is connected to the first end of the coupling capacitor C. The pull-down module 40 is used to provide the pull-down voltage Vgl, the first voltage Vdd and The second voltage is a high voltage, and the pull-down voltage Vgl is a low voltage. When increasing the voltage of the first terminal of the coupling capacitor C, the pull-down module 40 provides a basic voltage to the second terminal of the coupling capacitor C in advance, that is, a pull-down voltage Vgl is provided at the second terminal of the coupling capacitor C. Since the pull-down voltage Vgl is a low voltage and the second voltage is a high voltage, after the second voltage is loaded, there is a voltage difference between the second voltage and the pull-down voltage Vgl, and the voltage at the second end of the coupling capacitor C increases. According to the capacitive coupling effect of the coupling capacitor C, the voltage at the first terminal of the coupling capacitor C also increases, and the increased voltage value is equal to the voltage difference between the second voltage and the pull-down voltage Vgl.

By the voltage at the first terminal of the coupling capacitor C rising, the voltage difference between the second voltage and the pull-down voltage Vgl is increased based on the first voltage Vdd. As the voltage at the first terminal of the coupling capacitor C rises, The first end and the second end of the drive switch T0 are more fully opened, so that the gate drive signal Gn of the output module 10 is fully output to the pixel drive circuit.

Further, the pull-down module 40 is connected to both ends of the coupling capacitor C, that is, the pull-down module 40 can also be connected to the second end of the coupling capacitor C.

Specifically, in order to more effectively control the pull-down module 40 to provide the pull-down voltage Vgl, the pull-down module 40 includes a third response switch T3. The first end of the third response switch T3 is connected to the second end of the coupling capacitor C. The third response switch T3 has The second terminal is connected to the third power supply terminal 420, the control terminal of the third response switch T3 is connected to the third scan line 410, the third scan line 410 provides the third scan signal, and the control terminal of the third response switch T3 is used to respond to the third scan. signal, providing the pull-down voltage Vgl of the third power supply terminal 420 to the second terminal of the coupling capacitor C.

After the control terminal of the third response switch T3 receives the third scan signal, the first terminal and the second terminal of the third response switch T3 are turned on, and the pull-down voltage Vgl is output to the third terminal through the second terminal of the third response switch T3. In response to the first terminal of the switch T3, the pull-down voltage Vgl is loaded to the second terminal of the coupling capacitor C.

Referring to FIGS. 3 and 4 , the precharge module 20 includes a first signal terminal 230 , which is connected to the control terminal of the first response switch T1 . The first signal terminal 230 is used to provide the first scan signal G1 ; When the first scanning signal G1 is at a high level, the first terminal and the second terminal of the first response switch T1 are turned on.

The boost module 30 also includes a fourth response switch T4. The first terminal of the fourth response switch T4 is connected to the second power supply terminal 320. The second terminal of the fourth response switch T4 is connected to the control terminal of the second response switch T2. The control end of the switch T4 is connected to the second power supply end 320; after the control end of the fourth response switch T4 receives the electrical signal from the second power supply end 320, when the electrical signal provided by the second power supply end 320 is high level, the fourth response The first terminal and the second terminal of the switch T4 are connected, and the signal from the second power supply terminal 320 can also be loaded to the control terminal of the second response switch T2. Therefore, through the above connection method, the electrical signal provided by the second power supply terminal 320 can not only control the opening of the second response switch T2 and the fourth response switch T4, but also provide the second terminal voltage Cy applied to the coupling capacitor C.

The pull-down module 40 also includes a fifth response switch T5. The first end of the fifth response switch T5 is connected to the control end of the second response switch T2. The second end of the fifth response switch T5 is connected to the third power supply end 420. The fifth response switch T5 The control terminal of T5 is connected to the fourth power supply terminal 440; after the second response switch T2 completes the loading of the second voltage, the second power supply terminal 320 outputs a low level, and the fourth response switch T4 is turned off. In order to ensure that the second response switch T2 is also effectively closed, the voltage at the control terminal of the second response switch T2 is initialized.

The voltage of the fourth power supply terminal 440 is high level, the control terminal of the fifth response switch T5 receives a high level signal, the first terminal and the second terminal of the fifth response switch T5 are turned on, and the pull-down voltage in the pull-down module 40 is Vgl is loaded to the control terminal of the second response switch T2, and the voltage of the control terminal of the second response switch T2 is pulled down, completing the initialization of the control terminal of the second response switch T2.

The control terminal of the third response switch T3 is connected to the fourth power supply terminal 440, and the fourth power supply terminal 440 provides the third scanning signal to the third response switch T3. At the same time, the fourth power supply terminal 440 also provides a scanning signal to the fifth response switch T5, that is, the fifth response switch T5 also responds to the third scanning signal, and completes the control of the two switches through the same fourth power supply terminal 440, further simplifying the circuit structure. .

The pull-down module 40 also includes a sixth response switch T6. The control terminal of the sixth response switch T6 is connected to the second signal terminal 430. The second signal terminal 430 provides the scanning signal Gx of the second signal terminal 430. The first signal of the sixth response switch T6 is terminal is connected to the first terminal of the coupling capacitor C, and the second terminal of the sixth response switch T6 is connected to the third power supply terminal 420; after completing the loading of the first terminal voltage Cx of the coupling capacitor C, it is necessary to complete the loading of the first terminal of the coupling capacitor C The initialization of voltage Cx prevents the drive switch T0 from turning on. After the second signal terminal 430 provides a low-level signal, the first terminal and the second terminal of the sixth response switch T6 are turned on, and the pull-down voltage Vgl is provided to the first terminal of the coupling capacitor C through the sixth response switch T6, completing the coupling capacitor. Initialization of the first terminal voltage Cx of C.

The output module 10 also includes a seventh response switch T7. The first end of the seventh response switch T7 is connected to the second end of the driving switch T0. The second end of the seventh response switch T7 is connected to the third power supply end 420. The pull-down module 40 also includes The eighth response switch T8, the first end of the eighth response switch T8 is connected to the control end of the seventh response switch T7, the second end of the eighth response switch T8 is connected to the third power supply end 420, and the control end of the eighth response switch T8 is connected to The first terminal of the coupling capacitor C. When the first terminal of the coupling capacitor C is at a high level, the first terminal and the second terminal of the eighth response switch T8 are turned on, and the low voltage at the third terminal is provided to the control terminal of the seventh response switch T7. At this time, the seventh response switch T8 The first terminal and the second terminal of switch T7 are disconnected. This ensures that the output module 10 can smoothly output the gate drive signal Gn.

The pull-down module 40 also includes a ninth response switch T9. The first end of the ninth response switch T9 is connected to the fifth power supply terminal 450. The second end of the ninth response switch T9 is connected to the first end of the eighth response switch T8. The control terminal of the switch T9 is connected to the fifth power supply terminal 450; after the output module 10 completes outputting the gate drive signal Gn, the output terminal 120 of the output module 10 is initialized. The eighth response switch T8 is turned off, the control terminal of the ninth response switch T9 responds to the voltage of the fifth power supply terminal 450, the voltage of the fifth power supply terminal 450 is high level, and the voltage of the fifth power supply terminal 450 is provided to the seventh response switch The control terminal of T7, the first terminal and the second terminal of the seventh response switch T7 are turned on, and the pull-down voltage Vgl of the third power supply terminal 420 is provided to the output terminal 120 of the output module 10, completing the voltage of the output terminal 120 of the output module 10 initialization. That is, the initialization of the second terminal of the driving switch T0 is completed.

In order to further improve the stability of the gate drive circuit, the pull-down module 40 also includes a tenth response switch T10 , the first end of the tenth response switch T10 is connected to the control end of the driving switch T0 , and the second end of the tenth response switch T10 is connected to The third power supply terminal 420 and the control terminal of the tenth response switch T10 are connected to the control terminal of the seventh response switch T7. After completing the initialization of the second terminal of the driving switch T0, the control terminal of the tenth response switch T10 responds to the high level of the fifth power supply terminal 450, the first terminal and the second terminal of the tenth response switch T10 are turned on, and the voltage Vgl is pulled down. Provided to the control terminal of the driving switch T0, the voltage initialization of the control terminal of the driving switch T0 is completed.

Embodiment 2

Referring to Figure 5, the present application also provides a display device. The display device includes a display panel 50. The display panel 50 has a display area 510 and a non-display area 520. The non-display area 520 is located around the display area 510. The display device also It includes a pixel driving circuit and a gate driving circuit as described above. The pixel driving circuit is connected to the data line of the gate driving circuit. The gate driving circuit is located in the non-display area 520 and the pixel driving circuit is located in the display area 510 .

The gate drive circuit includes: output module 10, coupling capacitor C, precharge module 20 and boost module 30. The output module 10 is provided with an output terminal 120. The output module 10 is used to output the gate driving signal Gn. The gate driving signal Gn is transmitted to the pixel driving circuit through the output terminal 120.

The first voltage Vdd can already ensure that the output module 10 outputs the gate drive signal Gn. However, in order to ensure that the output module 10 can function more fully, the voltage value of the first voltage Vdd needs to be increased. To this end, the boost module 30 is connected to the second terminal of the coupling capacitor C. The boost module 30 is used to provide a second voltage to the second terminal of the coupling capacitor C. After the second terminal of the coupling capacitor C is loaded with the second voltage, The voltage at the second end of the coupling capacitor C is increased. Through the capacitive coupling effect of the coupling capacitor C, the increased voltage difference at the second end is coupled to the first end, so as to increase the first voltage Vdd by coupling. That is, the first terminal of the coupling capacitor C is also raised by the same voltage difference.

While the present application has been described with reference to several exemplary embodiments, it is to be understood that the terms used are illustrative and exemplary rather than limiting. Since the present application can be embodied in various forms without departing from the spirit or substance of the invention, it should be understood that the above-described embodiments are not limited to any foregoing details, but should be construed broadly within the spirit and scope defined by the appended claims. , therefore all changes and modifications falling within the scope of the claims or their equivalents shall be covered by the appended claims.

Claims

A gate drive circuit, the gate drive circuit includes:

An output module, the output module is used to output the gate drive signal;

A coupling capacitor, the first end of the coupling capacitor is connected to the output module;

A precharge module, the precharge module is connected to the first end of the coupling capacitor, the precharge module is used to provide a first voltage to the first end of the coupling capacitor, and the output module responds to the first voltage to output the gate drive signal; and

A boost module is connected to the second end of the coupling capacitor, and is used to provide a second voltage to the second end of the coupling capacitor to increase the first voltage through coupling.
The gate drive circuit according to claim 1, wherein the output module includes a drive switch, a control end of the drive switch is connected to the first end of the coupling capacitor, and the control end of the drive switch is used to respond to the first voltage;

The precharge module includes a first response switch, the first response switch is used to respond to a first scan signal to apply the first voltage to the first end of the coupling capacitor;

The boost module includes a second response switch configured to respond to a second scan signal to apply the second voltage to the second end of the coupling capacitor.
The gate drive circuit according to claim 2, wherein the control terminal of the first response switch is connected to a first scan line, the first scan line is used to provide the first scan signal, and the first response switch The first end is connected to the first end of the coupling capacitor, the second end is connected to a first power supply end, and the first power supply end is used to provide the first voltage;

The control end of the second response switch is connected to a second scan line, the second scan line is used to provide the second scan signal, and the first end of the second response switch is connected to the second end of the coupling capacitor. , the second end is connected to a second power supply end, and the second power supply end is used to provide the second voltage;

The output module also includes a clock signal terminal, the clock signal terminal is used to provide the gate drive signal, the clock signal terminal is connected to the first end of the drive switch, and the control end of the drive switch responds to the The first voltage transmits the gate driving signal to the second terminal of the driving switch.
The gate driving circuit according to claim 3, wherein the first power supply terminal and the second power supply terminal are the same power supply terminal, and the first voltage and the second voltage are equal.
The gate driving circuit according to claim 3, wherein the second scanning line is connected to the clock signal terminal, and the gate driving signal and the second scanning signal are the same signal.
The gate drive circuit according to claim 3, wherein the gate drive circuit further includes a pull-down module, the pull-down module is connected to the first end of the coupling capacitor, the pull-down module is used to provide a pull-down voltage, so The first voltage and the second voltage are high voltages, and the pull-down voltage is low voltage.
The gate drive circuit according to claim 6, wherein the pull-down module includes a third response switch, a first end of the third response switch is connected to the second end of the coupling capacitor, and the third response switch has a The second end is connected to the third power supply end, the control end of the third response switch is connected to the third scan line, the third scan line provides a third scan signal, and the control end of the third response switch is used to respond to the The third scanning signal provides the pull-down voltage of the third power supply terminal to the second terminal of the coupling capacitor.
The gate drive circuit according to claim 7, wherein the precharge module includes a first signal terminal connected to the control terminal of the first response switch, and the first signal terminal is used to provide the first scanning signal;

The boost module also includes a fourth response switch, a first end of the fourth response switch is connected to the second power supply end, and a second end of the fourth response switch is connected to the control end of the second response switch. , the control end of the fourth response switch is connected to the second power supply end;

The pull-down module also includes a fifth response switch and a sixth response switch. The first end of the fifth response switch is connected to the control end of the second response switch. The second end of the fifth response switch is connected to the control end of the second response switch. A third power supply terminal, the control terminal of the fifth response switch is connected to the fourth power supply terminal;

The control end of the sixth response switch is connected to the second signal end, the first end of the sixth response switch is connected to the first end of the coupling capacitor, and the second end of the sixth response switch is connected to the third power supply end.
The gate driving circuit of claim 2, wherein the driving switch is a thin film transistor switch.
A display device, the display device includes a display panel, the display panel has a display area and a non-display area, the non-display area is located around the display area, the display device also includes a pixel drive circuit and a gate a pole drive circuit, the pixel drive circuit is connected to the data line of the gate drive circuit, the gate drive circuit is located in the non-display area, the pixel drive circuit is located in the display area; the gate The drive circuit includes:

An output module, the output module is used to output the gate drive signal;

A coupling capacitor, the first end of the coupling capacitor is connected to the output module;

A precharge module, the precharge module is connected to the first end of the coupling capacitor, the precharge module is used to provide a first voltage to the first end of the coupling capacitor, and the output module responds to the first voltage to output the gate drive signal; and

A boost module, the boost module is connected to the second end of the coupling capacitor, and the boost module is used to provide a second voltage to the second end of the coupling capacitor to increase the first voltage through coupling.
The display device according to claim 10, wherein the output module includes a drive switch, a control end of the drive switch is connected to the first end of the coupling capacitor, and the control end of the drive switch is used to respond to the first Voltage;

The precharge module includes a first response switch, the first response switch is used to respond to a first scan signal to apply the first voltage to the first end of the coupling capacitor;

The boost module includes a second response switch configured to respond to a second scan signal to apply the second voltage to the second end of the coupling capacitor.
The display device according to claim 11, wherein the control end of the first response switch is connected to a first scan line, the first scan line is used to provide the first scan signal, and the first response switch has a control end connected to a first scan line. One end is connected to the first end of the coupling capacitor, and the second end is connected to a first power supply end, and the first power supply end is used to provide the first voltage;

The control end of the second response switch is connected to a second scan line, the second scan line is used to provide the second scan signal, and the first end of the second response switch is connected to the second end of the coupling capacitor. , the second end is connected to a second power supply end, and the second power supply end is used to provide the second voltage;

The output module also includes a clock signal terminal, the clock signal terminal is used to provide the gate drive signal, the clock signal terminal is connected to the first end of the drive switch, and the control end of the drive switch responds to the The first voltage transmits the gate driving signal to the second terminal of the driving switch.
The display device according to claim 12, wherein the first power supply terminal and the second power supply terminal are the same power supply terminal, and the first voltage and the second voltage are equal.
The display device according to claim 12, wherein the second scan line is connected to the clock signal terminal, and the gate drive signal and the second scan signal are the same signal.
The display device according to claim 12, wherein the gate driving circuit further includes a pull-down module, the pull-down module is connected to the first end of the coupling capacitor, the pull-down module is used to provide a pull-down voltage, and the third pull-down module A voltage and the second voltage are high voltages, and the pull-down voltage is low voltage.
The display device according to claim 15, wherein the pull-down module includes a third response switch, a first end of the third response switch is connected to the second end of the coupling capacitor, and a second end of the third response switch is connected to the second end of the coupling capacitor. The terminal is connected to the third power supply terminal, the control terminal of the third response switch is connected to the third scan line, the third scan line provides a third scan signal, and the control terminal of the third response switch is used to respond to the third Scan the signal to provide the pull-down voltage of the third power supply terminal to the second terminal of the coupling capacitor.
The display device according to claim 16, wherein the pre-charge module includes a first signal terminal connected to the control terminal of the first response switch, the first signal terminal is used to provide the The first scan signal;

The boost module also includes a fourth response switch, a first end of the fourth response switch is connected to the second power supply end, and a second end of the fourth response switch is connected to the control end of the second response switch. , the control end of the fourth response switch is connected to the second power supply end;

The pull-down module also includes a fifth response switch and a sixth response switch. The first end of the fifth response switch is connected to the control end of the second response switch. The second end of the fifth response switch is connected to the control end of the second response switch. A third power supply terminal, the control terminal of the fifth response switch is connected to the fourth power supply terminal;

The control end of the sixth response switch is connected to the second signal end, the first end of the sixth response switch is connected to the first end of the coupling capacitor, and the second end of the sixth response switch is connected to the third power supply end.
The display device of claim 11, wherein the driving switch is a thin film transistor switch.