TWI742752B - Gate driving circuit of display panel - Google Patents

Abstract

The invention provides a gate driving circuit, which includes a pull-up circuit, a pull-up control circuit and a pull-down control circuit. The pull-up circuit includes a pull-up control terminal and outputs a gate signal. The pull-up control circuit is coupled to the pull-up control terminal and controls a pull-up control electrical potential of the pull-up control terminal. The pull-down control circuit includes a reference electrical potential terminal and is coupled to the pull-up control circuit and the pull-up circuit. The gate driving circuit further includes a pre-reset circuit and/or an energy storage element. The reference electrical potential terminal and/or the pre-reset circuit is/are coupled to a first reference signal during a period of displaying and a period of touching and detecting. Alternatively, they are coupled to the first reference signal during a period of displaying and coupled to a second reference signal during a period of touching and detecting. The voltage level of second reference signal is higher than the voltage level of first reference signal.

Description

Gate drive circuit of display panel

The present invention relates to a driving circuit, in particular to a gate driving circuit of a display panel.

As the concept of System-on-Glass (SOG, System-on-Glass) has been put forward one after another, recently many products integrate the gate driver or scan driver in the display driver circuit on the glass, which is GOA (Gate-Driver-on-Array) circuit. Furthermore, the integration technology of touch and display includes two in-cell and on-cell embedded structures. In cell's in-cell touch technology is to fabricate the touch sensing layer on the array substrate of the display panel, and cut the display panel originally used as the upper electrode (Vcom) layer for display, and use it as the touch sensing layer. Moreover, compared with on cell's in-cell touch technology, In cell can reduce the number of manufacturing processes and is lighter and thinner.

However, applying the GOA circuit to the in-cell touch technology will face the problem of transistor leakage. Therefore, designing GOA circuits that conform to the in-cell touch structure has become the development goal of the in-cell touch technology.

The purpose of the present invention is to provide a gate driving circuit for a display panel, which is applied to an in-cell touch control structure and reduces leakage current, so that the output pulse can effectively control the pixel transistor.

The present invention provides a gate drive circuit, which includes a pull-up circuit, a pull-up control circuit, a pull-down control circuit and a pre-reset circuit. The pull-up circuit includes a pull-up control terminal and outputs a gate signal. The pull-up control circuit is coupled to the pull-up control terminal of the pull-up circuit and controls a pull-up control potential of the pull-up control terminal. The pull-down control circuit is coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, wherein the reference potential terminal is coupled to a first reference signal during a display period, and the reference potential terminal is used for a touch detection During the period, it is coupled to a second reference signal, and the voltage level of the second reference signal is higher than the voltage level of the first reference signal. The pre-reset circuit is coupled to the pull-up control terminal of the pull-up circuit and resets the pull-up control potential of the pull-up control terminal.

The present invention provides a gate drive circuit, which includes a pull-up circuit, a pull-up control circuit, a pull-down control circuit and an anti-noise circuit. The pull-up circuit includes a pull-up control terminal and outputs a gate signal. The pull-up control circuit is coupled to the pull-up control terminal of the pull-up circuit and controls a pull-up control potential of the pull-up control terminal. The pull-down control circuit is coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, which is coupled to a first reference signal during a display period. The anti-noise circuit includes a plurality of switching elements, and at least two switching elements of the switching elements are connected in series between the pull-up circuit and the first reference signal.

The present invention provides a gate drive circuit, which includes a pull-up circuit, a pull-up control circuit, a pull-down control circuit, an energy storage element and a pre-reset circuit. The pull-up circuit includes a pull-up control terminal, a pull-up output terminal and output a gate signal. The pull-up control circuit is coupled to the pull-up control terminal of the pull-up circuit and controls a pull-up control potential of the pull-up control terminal. The pull-down control circuit is coupled to the pull-up control circuit and the upper The pull-down circuit and the pull-down control circuit include a reference potential terminal, and the reference potential terminal is coupled to a first reference signal during a display period. The energy storage element is coupled between the pull-up control terminal and the pull-up output terminal of the pull-up circuit. The pre-reset circuit is coupled to the pull-up control terminal of the pull-up circuit and resets the pull-up control potential of the pull-up control terminal.

10: Gate drive circuit

11: Pull-up control circuit

13: Pull-down control circuit

15: pull-up circuit

17: Pre-reset circuit

19: Anti-noise circuit

20: Source drive circuit

30: In-cell touch panel

An: Pull up control potential

An(0): Pull-up control potential

An(1): Pull-up control potential

An(2): Pull-up control potential

An(3): Pull-up control potential

An(4): Pull-up control potential

An+1: Pull up the control potential

C1: Pull up the control terminal

CLK1: Clock signal

CTH: Energy storage element

Frame N: During the frame

Frame N+1: During the frame

G[1]: Gate signal

G[2]: Gate signal

G[3]: Gate signal

G[72]: Gate signal

G[73]: Gate signal

G[74]: Gate signal

G[160]: Gate signal

G[161]: Gate signal

G[162]: Gate signal

G[688]: Gate signal

G[689]: Gate signal

G[690]: Gate signal

G[n-2]: Gate signal

G[n]: Gate signal

G[n+3]: Gate signal

G[n+m]: Gate signal

M1: Transistor

M2: Transistor

M3: Transistor

M4: Transistor

M6: Transistor

M8: Transistor

M14: Transistor

M15: Transistor

M16: Transistor

Pre-Rst: Pre-reset signal

S[1]: Source signal

S[2]: source signal

S[3]: Source signal

S[n]: source signal

S[n+m]: source signal

Touch#1: During touch detection

Touch#2: During touch detection

Touch#8: During touch detection

VDD: supply voltage

VOUT: pull-up output

Vref: Reference potential terminal

VSS1: The first reference signal

VSS2: The second reference signal

First A: it is a schematic diagram of an embodiment of the in-cell touch panel and a driving circuit of the present invention; the first B: it is a schematic diagram of an embodiment of the driving mode of the gate drive circuit of the present invention; Figure C: It is a timing diagram of an embodiment of the long-H drive mode of the gate drive circuit of the present invention; Figure 2: It is a circuit diagram of the first embodiment of the gate drive circuit of the present invention; Figure 3: It is a circuit diagram of the second embodiment of the gate drive circuit of the present invention; Figure 4: it is the circuit diagram of the third embodiment of the gate drive circuit of the present invention; Figure 5: It is the gate drive of the present invention The circuit diagram of the fourth embodiment of the circuit; the sixth figure: it is the circuit diagram of the fifth embodiment of the gate drive circuit of the present invention; the seventh figure: the circuit diagram of the sixth embodiment of the gate drive circuit of the present invention ; And the eighth figure: it is a high-temperature simulation diagram of the embodiment of the change of the pull-up control potential of the present invention.

Certain words are used in the specification and claim items to refer to specific elements. However, those with ordinary knowledge in the technical field of the present invention should understand that the manufacturer may use different terms to refer to the same element. Moreover, this specification and The requested item does not use the difference in names as a way of distinguishing components, but uses the overall technical difference of the components as the criterion for distinguishing. In the entire manual and request items The "include" mentioned in is an open term, so it should be interpreted as "include but not limited to". Furthermore, the term "coupling" here includes any direct and indirect connection means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device can be directly connected to the second device, or can be indirectly connected to the second device through other devices or other connection means.

Please refer to FIG. 1A, which is a schematic diagram of an embodiment of the in-cell touch panel and driving circuit of the present invention. As shown in the figure, the driving circuit drives the in-cell touch panel 30, and the driving circuit includes a gate driving circuit 10 and a source driving circuit 20. The driving modes of the in-cell touch panel 30 can be divided into long-H and long-V, as shown in Fig. 1B, which is a schematic diagram of an embodiment of the driving mode of the gate driving circuit of the present invention. The long-H mode shown on the right side of Figure B intersperses the touch detection scan (ie a touch detection period) between the gate line scans (ie a display period), as shown on the left side of the first Figure B In the long-V mode, the scan of the touch detection (ie, the touch detection period) is set after the gate line scan (ie, the display period) is completed. In addition, the embodiment selects the long-H mode in-cell touch panel 30 as an illustrative aspect.

Referring to Figure 1A again, the gate drive circuit 10 outputs multiple gate signals G[1], G[2], G[3]...G[n], G[n+m] via multiple gate lines To the in-cell touch panel 30, the gate signal G[1]...G[n+m] is an output pulse. The source driving circuit 20 outputs complex source signals S[1], S[2], S[3]...S[n], S[n+m] to the in-cell touch panel via the complex source lines 30. Please refer to the first FIG. C, which is a timing diagram of an embodiment of the long-H driving mode of the gate driving circuit of the present invention. As shown in the figure, these gate signals G[1], G[2]...G[72], G[73], G[74]...G[160], G[161], G [162]...G[688], G[689], G[690], G[n] are a high level (ie pulse signal) in sequence, and Frame N, Frame N+1 during each frame It may include a plurality of display periods, and these display periods include N segments of touch detection periods, where the touch detection periods are marked as Touch#1, Touch#2, and Touch#8, and the remaining time is the display period. Therefore, the gate driving circuit 10 generates the gate signals G[1]~G[72] to scan the in-cell touch panel 30, and the gate signals G[1]~G[72] When the signal G[72] changes from the high level to the low level, it enters the touch detection period Touch#1. After the touch detection period Touch#1 ends, the gate signals G[73]~G[160] are pulse signals in sequence, and then the next touch detection period Touch#2 is entered. In the same way, when the gate signals G[161]~G[688] are at low levels, you can select another time to enter the next touch detection period Touch#8, so that these touch detection periods Touch #1, Touch#2, and Touch#8 are interspersed between these display periods. In addition, in the present invention, Touch#1, Touch#2, and Touch#8 can achieve the effect of reducing leakage current during the touch detection period, and the description is as follows.

Please refer to the second figure, which is a circuit diagram of the first embodiment of the gate drive circuit of the present invention. As shown in the figure, the gate driving circuit 10 includes a pull-up control circuit 11, a pull-down control circuit 13 and a pull-up circuit 15. The pull-up control circuit 11 is coupled to a pull-up control terminal C1 of the pull-up circuit 15 and controls a pull-up control potential An of the pull-up control terminal C1. The pull-up control circuit 11 includes an input terminal, an output terminal, and a control terminal. The input terminal is coupled to a supply voltage VDD, the output terminal outputs a supply voltage VDD, and the control terminal is coupled to a gate signal G[n-2] . In this way, the pull-up control circuit 11 outputs the supply voltage VDD to the pull-up control terminal C1 of the pull-up circuit 15 to increase the pull-up control potential An. In addition, the pull-up control circuit 11 may be a transistor M1.

The pull-down control circuit 13 is coupled to the pull-up control circuit 11 and the pull-up circuit 15, and the pull-down control circuit 13 includes a reference potential terminal Vref. Furthermore, the pull-down control circuit 13 further includes an output terminal and a control terminal. The output terminal is coupled to the pull-up control potential An, and the control terminal is coupled to a gate signal G[n+3]. In addition, the pull-down control circuit 13 may be a transistor M3. The reference potential terminal Vref of the pull-down control circuit 13 is coupled to a first reference signal VSS1 or a second reference signal VSS2. The voltage level of the second reference signal VSS2 is higher than the voltage level of the first reference signal VSS1. In this way, in order to reduce the leakage current of the pull-up control potential An through the pull-down control circuit 13, the voltage difference between the output terminal of the pull-down control circuit 13 and the reference potential terminal Vref can be controlled. In other words, during the display period, the pull-up control potential An of the pull-up circuit 15 is sufficient. High, the reference potential terminal Vref of the control pull-down control circuit 13 is coupled to the first reference signal VSS1 and is the voltage level of the first reference signal VSS1 to output a normal gate signal G[n]. During the touch detection period (such as Touch#1, Touch#2 or Touch#8 in Figure 1C), in order to reduce the voltage difference between the output terminal of the pull-down control circuit 13 and the reference potential terminal Vref, the pull-down control circuit is controlled The reference potential terminal Vref of 13 is coupled to the second reference signal VSS2, and is the voltage level of the second reference signal VSS2. In addition, the pull-up circuit 15 includes a transistor M2, and the pull-up circuit 15 includes an input terminal, a pull-up output terminal VOUT, and a pull-up control terminal C1. The input terminal is coupled to a clock signal CLK1, and the pull-up output terminal VOUT outputs the gate signal G[n], and the pull-up control terminal C1 is coupled to the pull-up control signal. In addition, the pull-up circuit 15 can be a transistor M2 for transmitting the start signal.

Referring back to the second figure, the gate driving circuit 10 includes a pre-reset circuit 17 including an input terminal, an output terminal and a control terminal. The input terminal is coupled to the first reference signal VSS1, and the output terminal is coupled to The pull-up control terminal C1 of the pull-up circuit 15 is coupled to a pre-reset signal Pre-Rst. In addition, the pre-reset circuit 17 includes a transistor M14, which resets the pull-up control potential An to a low level before and after a display screen starts. In this way, the pre-reset circuit 17 can reset the pull-up control potential An of the pull-up control terminal C1 according to the pre-reset signal Pre-Rst. In the embodiment of the second figure, the pull-up control potential An is reset to the first reference. The voltage level of the signal VSS1. In other words, during the display period and the touch detection period (such as Touch#1, Touch#2, and Touch#8 in Figure 1C), the pre-reset circuit 17 resets the pull-up control potential An to the value of the first reference signal VSS1 Voltage level.

The gate driving circuit 10 includes an anti-noise circuit 19 coupled between the first reference signal VSS1 and the pull-up control signal (the pull-up control potential An). The anti-noise circuit 19 can be shared by multiple gate drive circuits and achieve the effect of reducing gate line noise. As shown in the second embodiment, the nth gate drive circuit and the n+1th gate drive can be used. The circuit is shared. Furthermore, the anti-noise circuit 19 includes a complex number of switching elements, And each switching element provides different current paths. The switching elements may be a plurality of transistors M6 and M8. The transistor M6 is coupled between the first reference signal VSS1 and the pull-up control signal (pull-up control potential An) of the nth gate drive circuit. The transistor M8 is coupled It is connected between the first reference signal VSS1 and the pull-up control signal (pull-up control potential An+1) of the n+1th gate drive circuit. Therefore, each stage of the gate drive circuit is coupled to a single switching element of the anti-noise circuit 19. Furthermore, the control terminals of the transistors M6 and M8 can be controlled by suitable control signals, and the embodiments do not limit the circuits for controlling the transistors.

Please refer to the third figure, which is a circuit diagram of the second embodiment of the gate drive circuit of the present invention. As shown in the figure, when a cross voltage Vds of the transistor is large, the pull-up control potential An is likely to cause leakage through the transistor. Therefore, reducing the voltage level of the cross voltage Vds can reduce the leakage current phenomenon. Vds refers to the voltage across the input and output of the transistor. In this way, in addition to raising the reference potential terminal Vref of the pull-down control circuit 13 to the voltage level of the second reference signal VSS2 in the embodiment of the second figure, the pre-reset circuit 17 can also be coupled differently during the display period and the touch detection period The reference signal of the voltage level is coupled to the first reference signal VSS1 during the display period in the embodiment of the third figure, and is coupled during the touch detection period (such as Touch#1, Touch#2 or Touch#8 in the first C figure) The second reference signal VSS2. In other words, during the display period, the pre-reset circuit 17 resets the pull-up control potential An to the voltage level of the first reference signal VSS1, and during the touch detection period (such as Touch#1, Touch#2 or Touch #8), the pre-reset circuit 17 resets the pull-up control potential An to the voltage level of the second reference signal VSS2. Therefore, the cross-voltage Vds of the transistors M3 and M14 can be reduced during the touch detection period, so as to reduce the reduction of the pull-up control potential An and avoid the display quality degradation. However, the transistors M3 and M14 in the third embodiment of FIG. 3 can selectively reduce the voltage across the voltage Vds according to the degree of leakage current reduction. The embodiment does not limit the transistors M3 and M14 to reduce the voltage across the voltage Vds. In the same way, the pull-up control potential An can be selectively reset to the second reference signal VSS2 during one of the touch detection periods (such as Touch#1, Touch#2, or Touch#8 in Figure 1C) The voltage level.

Please refer to FIG. 4, which is a circuit diagram of the third embodiment of the gate drive circuit of the present invention. As shown in the figure, the switching elements of the anti-noise circuit 19 can be changed from the implementations in the second and third figures to at least two of the switching elements depicted in the fourth figure. At least two switching elements are connected in series with each other. The number of switching elements connected in series can be two or more than three. In this way, at least two switching elements of these switching elements are connected in series between the pull-up circuit 15 and the first reference signal VSS1, that is, for the anti-noise of each stage of the gate drive circuit, two transistors M6, M16, and M8 are connected in series. , M15. In the fourth figure, a transistor M15 is connected in series on the path from the transistor M8 to the first reference signal VSS1, and a transistor M16 is connected in series on the path from the transistor M6 to the first reference signal VSS1. In this way, the cross voltage Vds of the transistors M6 and M8 is reduced, and while the duty of the anti-noise circuit 19 is maintained at 100%, the leakage current effect of the transistors M6 and M8 is effectively reduced. Furthermore, the reference potential terminal Vref of the pull-down control circuit 13 is only coupled to the first reference signal VSS1, so it is coupled to the first reference signal VSS1 during the display period and during the touch detection period.

Please refer to FIG. 5, which is a circuit diagram of the fourth embodiment of the gate drive circuit of the present invention. As shown in the figure, the anti-noise circuit 19 includes the transistors M6 and M16 connected in series and the transistors M8 and M15 connected in series to reduce the leakage current. Furthermore, in the embodiment of FIG. 5, the transistor M3 of the pull-down control circuit 13 can be used to reduce the cross-voltage Vds. In this way, the transistor M3 is in the touch detection period (such as Touch#1, Touch#2 or Touch#8) is coupled to the second reference signal VSS2, and the transistor M14 of the pre-reset circuit 17 reduces the cross-voltage Vds, so that the transistor M14 is in the touch detection period (such as Touch#1 and Touch in Figure 1C). #2 or Touch#8) is coupled to the second reference signal VSS2. In addition, during the display period, the pull-up circuit 15 needs to raise the level of the gate signal G[n], so the pull-down control circuit 13 is coupled to the first reference signal VSS1 to raise the pull-up control potential An.

Please refer to Figure 6, which is a circuit diagram of the fifth embodiment of the gate drive circuit of the present invention. As shown in the figure, the gate drive circuit includes an energy storage element CTH, which is coupled to the pull-up of the pull-up circuit 15 Between the control terminal C1 and the pull-up output terminal VOUT, the energy storage element CTH may be a capacitor. In this way, due to the characteristics of the energy storage element CTH, the capacitance value of the pull-up control terminal C1 (An node) can be increased, and the rise of the pull-up control potential An can be increased, and the falling slope of the pull-up control potential An can be reduced, that is, slow down Pull up the leakage current speed of the control potential An.

Please refer to FIG. 7, which is a circuit diagram of the sixth embodiment of the gate drive circuit of the present invention. As shown in the figure, in addition to using the characteristics of the energy storage element CTH to slow down the leakage current as shown in the sixth figure, you can also refer to the technical content of the second to fifth embodiments to combine the pull-down control circuit 13 with the pre-reset The circuit 17 is coupled to reference signals of different voltage levels during the display period and the touch detection period, and controls the influence of the voltage difference on the leakage current. That is, during the display period, the transistors M3 and M14 are coupled between the pull-up circuit 15 and the first reference signal VSS1. During the touch detection period (such as Touch#1, Touch#2 or Touch#8 in the first C), the transistors M3 and M14 are coupled between the pull-up circuit 15 and the second reference signal VSS2.

Please refer to the eighth figure, which is a simulation diagram of the embodiment of the change of the pull-up control potential of the present invention. As shown in the figure, the change of the pull-up control potential An under a high temperature environment (for example, 85° C.) is shown, and the pull-up control potential An can reduce the influence of the leakage current through the above-mentioned different embodiments. Therefore, it can be compared with the different embodiments of the present invention (such as An(1), An(2), An(3)) that the pull-up control potential An is located in a high-temperature environment without improving the leakage current (such as An(0)). , An(4)). It can be seen from the embodiment in FIG. 8 that the initial pull-up control potential An is not much different, and after entering the touch detection period, due to the leakage of the pull-up control circuit 13, the pre-reset circuit 17 or/and the anti-noise circuit 19 The current path causes the pull-up control potential An to gradually decrease. First of all, under normal leakage current improvement, assuming that the initial pull-up control potential An is 12.78V, and after entering the touch detection period, the pull-up control potential An gradually decreases to -2.16V, in other words, the pull-up control potential An 14.94V is reduced due to the influence of leakage current. Furthermore, the pull-up control potential An(1) of the embodiment in FIG. 3 is assumed to have an initial level of 12.79V during the display period, and after entering the touch detection period, the pull-up control potential An(1) It is gradually reduced to 1.29V. In other words, the pull-up control potential An(1) is reduced by 11.49V due to the leakage current. That is, the embodiment in Figure 2 does improve the magnitude of the pull-up control potential An(1) reduced by the leakage current.

Referring again to the eighth figure, the pull-up control potential An(2) of the embodiment in the fourth figure is assumed to be 13.30V at the initial level during the display period, and after entering the touch detection period, the pull-up control potential An( 2) Gradually reduce to 5.03V, in other words, the pull-up control potential An(2) is reduced by 8.27V due to the leakage current, that is, the embodiment in the fourth figure can also improve the pull-up control potential An(2) due to the leakage current. Amplitude. In the embodiment of the fifth figure, the pull-up control potential An(3) is assumed to be 13.30V at the initial level during the display period. After entering the touch detection period, the pull-up control potential An(3) gradually decreases to 8.67 V, in other words, the pull-up control potential An(3) is reduced by 4.63V due to the influence of the leakage current, that is, the gate driving circuit 10 includes the third embodiment and the fourth embodiment when the leakage current is smaller, so the upper The difference between the quasi-position of the control potential An(3) during the display period and the touch detection period is smaller. In the embodiment of the seventh figure, the pull-up control potential An(4) is assumed to have an initial level of 13.28V during the display period. After entering the touch detection period, the pull-up control potential An(4) gradually decreases to 9.41 V, in other words, the pull-up control potential An(4) is reduced by 3.87V due to the influence of the leakage current, that is, the gate drive circuit 10 of the seventh embodiment can more effectively control the pull-up control compared to other embodiments. The falling slope of the potential An(4).

In summary, the present invention provides a gate drive circuit, which includes a pull-up circuit, a pull-up control circuit, and a pull-down control circuit. The pull-up circuit includes a pull-up control terminal and an output gate signal. The pull-up control circuit is coupled to the pull-up control terminal and controls the pull-up control potential of the pull-up control terminal. The pull-down control circuit includes a reference potential terminal and is coupled to the pull-up control circuit and the pull-up circuit. The gate drive circuit further includes a pre-reset circuit or energy storage element. The reference potential terminal and/or the pre-reset circuit are coupled to the first reference signal during the display period and the touch detection period, or, the first reference signal is coupled during the display period and the second reference signal is coupled during the touch detection period . The voltage level of the second reference signal is higher than the voltage level of the first reference signal. So, the gate The driving circuit is applied to the in-cell touch control structure and reduces the leakage current, so that the output pulse can effectively control the pixel transistor.

11: Pull-up control circuit

13: Pull-down control circuit

15: pull-up circuit

17: Pre-reset circuit

19: Anti-noise circuit

An: Pull up control potential

An+1: Pull up the control potential

C1: Pull up the control terminal

CLK1: Clock signal

G[n-2]: Gate signal

G[n]: Gate signal

G[n+3]: Gate signal

M1: Transistor

M2: Transistor

M3: Transistor

M4: Transistor

M6: Transistor

M8: Transistor

M14: Transistor

Pre-Rst: Pre-reset signal

VDD: supply voltage

VOUT: pull-up output

Vref: Reference potential terminal

VSS1: The first reference signal

VSS2: The second reference signal

Claims (14)

A gate drive circuit for a display panel, comprising: a pull-up circuit, including a pull-up control terminal, and output a gate signal; a pull-up control circuit coupled to the pull-up control terminal of the pull-up circuit, And control a pull-up control potential of the pull-up control terminal; a pull-down control circuit, coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, the reference potential terminal in a display period Coupled to a first reference signal, the reference potential terminal is coupled to a second reference signal during a touch detection period, the voltage level of the second reference signal is higher than the voltage level of the first reference signal; and The pre-reset circuit is coupled to the pull-up control terminal of the pull-up circuit and resets the pull-up control potential of the pull-up control terminal. The gate drive circuit of the display panel according to claim 1, wherein, during the display period and the touch detection period, the pre-reset circuit resets the pull-up control potential to the voltage level of the first reference signal Bit. The gate drive circuit for a display panel according to claim 1, wherein, during the display period, the pre-reset circuit resets the pull-up control potential to the voltage level of the first reference signal, and performs the touch detection During the test period, the pre-reset circuit resets the pull-up control potential to the voltage level of the second reference signal. The gate drive circuit of a display panel according to claim 1, which includes: an anti-noise circuit, wherein the anti-noise circuit includes a plurality of switching elements, each of the switching elements provides a different current path, and the anti-noise circuit The noise circuit is coupled to the pull-up control of the pull-up circuit At the end, the anti-noise circuit maintains the pull-up control circuit at the voltage level of the first reference signal during the touch detection period. A gate drive circuit for a display panel, comprising: a pull-up circuit, including a pull-up control terminal, and output a gate signal; a pull-up control circuit coupled to the pull-up control terminal of the pull-up circuit, And control a pull-up control potential of the pull-up control terminal; a pull-down control circuit, coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, the reference potential terminal in a display period Coupled to a first reference signal; an anti-noise circuit including a plurality of switching elements, at least two switching elements of the switching elements are connected in series between the pull-up circuit and the first reference signal; and a pre-reset circuit, The pull-up control terminal is coupled to the pull-up circuit, and the pull-up control potential of the pull-up control terminal is reset to the voltage level of the first reference signal during the display period and a touch detection period. The gate drive circuit of the display panel according to claim 5, comprising: a pre-reset circuit, coupled to the pull-up control terminal of the pull-up circuit, and resets the pull-up control terminal during a display period The pull-up control potential is the voltage level of a first reference signal, and the pull-up control potential of the pull-up control terminal is reset to the voltage level of a second reference signal during a touch detection period. The gate driving circuit of the display panel according to claim 6, wherein the reference potential terminal of the pull-down control circuit is coupled to a first reference signal during the display period and the touch detection period. The gate drive circuit of the display panel according to claim 6, wherein the reference potential terminal of the pull-down control circuit is coupled to a first reference signal during the display period, and during the touch detection period Coupled to a second reference signal, the voltage level of the second reference signal is higher than the voltage level of the first reference signal. A gate drive circuit for a display panel, comprising: a pull-up circuit, including a pull-up control terminal and a pull-up output terminal, and output a gate signal; a pull-up control circuit coupled to the pull-up circuit The pull-up control terminal controls a pull-up control potential of the pull-up control terminal; the pull-down control circuit is coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, the reference The potential terminal is coupled to a first reference signal during a display period; an energy storage element is coupled between the pull-up control terminal of the pull-up circuit and the pull-up output terminal; and a pre-reset circuit is coupled The pull-up control terminal of the pull-up circuit resets the pull-up control potential of the pull-up control terminal during the display period and a touch detection period, wherein the pull-up control potential is the voltage level of the first reference signal Bit. The gate driving circuit of the display panel according to claim 9, wherein the pre-reset circuit resets the pull-up control potential of the pull-up control terminal to the voltage level of a first reference signal during a display period, During a touch detection period, the pull-up control potential of the pull-up control terminal is reset to the voltage level of a second reference signal, and the voltage level of the second reference signal is higher than the voltage level of the first reference signal. The gate driving circuit of the display panel according to claim 10, wherein the reference potential terminal of the pull-down control circuit is coupled to a first reference signal during the display period and the touch detection period. The gate drive circuit of the display panel according to claim 10, wherein the reference potential terminal of the pull-down control circuit is coupled to a first reference signal during the display period, and is coupled to a second reference signal during the touch detection period A reference signal, the voltage level of the second reference signal is higher than the voltage level of the first reference signal. The gate drive circuit of the display panel according to claim 12 further includes an anti-noise circuit, wherein the anti-noise circuit includes a plurality of switching elements, each of the switching elements provides a different current path, and the switching element is The display period and the touch detection period are coupled between the pull-up circuit and the first reference signal. The gate drive circuit of the display panel according to claim 12, further comprising an anti-noise circuit, wherein the anti-noise circuit includes a plurality of switching elements, and at least two switching elements of the switching elements are connected in series during the display period and The touch detection period is coupled between the pull-up circuit and the first reference signal.

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