TW202203182A - 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.

With the concept of system-on-glass (SOG, System-on-Glass) being put forward one after another, many products have recently integrated the gate scan driver circuit (Gate driver or Scan driver) in the display driver circuit on the glass, that is, GOA (Gate-Driver-on-Array) circuit. Furthermore, the integration technology of touch and display includes two in-cell structures, in cell and on cell. 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 upper electrode (Vcom) layer originally used for display on the display panel, and use it as the touch sensing layer. Moreover, compared with the on-cell in-cell touch technology, the in-cell can reduce the number of process passes 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 a GOA circuit conforming to the in-cell touch structure has become the development goal of in-cell touch technology.

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

The invention provides a gate driving 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 level 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 A second reference signal is coupled during the period, and the voltage level of the second reference signal is higher than that 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 invention provides a gate driving 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 level 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, and the reference potential terminal 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 invention provides a gate driving 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 an output 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 level 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, 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 end and the pull-up output end 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.

Certain terms are used in the description and claims to refer to specific elements. However, those with ordinary knowledge in the technical field of the present invention should understand that manufacturers may use different terms to refer to the same element. The claim does not take the difference in name as a way of distinguishing elements, but takes the difference in the overall technology of the elements as a criterion for distinguishing. The "comprising" mentioned throughout the specification and claims is an open-ended term, so it should be interpreted as "including but not limited to". Furthermore, the term "coupled" herein includes any direct and indirect means of connection. Therefore, if a first device is described as being 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 connecting means.

Please refer to FIG. 1 A, which is a schematic diagram of an embodiment of an in-cell touch panel and a 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 Figure B, which is a schematic diagram of an embodiment of the driving mode of the gate driving circuit of the present invention, as shown in Figure 1 The long-H mode shown on the right side of Figure B intersperses the scan of the touch detection (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 in-cell touch panel 30 in the long-H mode as an illustration aspect.

Referring back to Figure 1A, the gate driving circuit 10 outputs the complex gate signals G[1], G[2], G[3]...G[n], G[n+m] through the complex gate lines to the In the embedded touch panel 30, the gate signals G[1]...G[n+m] are an output pulse. The source driving circuit 20 outputs the plurality of source signals S[1], S[2], S[3] . . . S[n], S[n+m] to the in-cell touch panel 30 through the plurality of source lines. Please refer to the first diagram 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, the 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 in sequence (ie, a pulse signal), and each frame period Frame N, Frame N+1 can include multiple display periods , and the display periods include N segments of touch detection periods, wherein 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 when the gate signal G[72] changes from a high level to a low level, Enter Touch#1 during touch detection. After the touch detection period Touch#1 ends, the gate signals G[73]~G[160] are pulse signals in sequence, and then enter the next touch detection period Touch#2. Similarly, when the gate signals G[161]~G[688] are at low level, another time can be selected to enter the next touch detection period Touch#8. In this way, the touch detection period Touch#8 #1, Touch#2, and Touch#8 are interspersed between these display periods. In addition, the present invention can achieve the effect of reducing leakage current during the touch detection period Touch#1, Touch#2, and Touch#8, which will be described below.

Please refer to the second figure, which is a circuit diagram of the first embodiment of the gate driving 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, wherein the input terminal is coupled to a supply voltage VDD, the output terminal outputs the 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 raise 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, wherein 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, in order to make the pull-up control potential An of the pull-up circuit 15 high enough during the display period, 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 the first picture C), 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 end, a pull-up output end VOUT and a pull-up control end C1, wherein the input end is coupled to a clock signal CLK1, and the pull-up output end 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 to the second figure again, the gate driving circuit 10 includes a pre-reset circuit 17, which includes an input terminal, an output terminal and a control terminal, wherein 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 the first picture C), the pre-reset circuit 17 resets the pull-up control potential An to the first reference signal VSS1 voltage level.

The gate driving circuit 10 includes an anti-noise circuit 19 which is coupled between the first reference signal VSS1 and the pull-up control signal (pull-up control potential An). The anti-noise circuit 19 can be shared by multi-stage gate drive circuits and achieve the effect of reducing gate line noise. As shown in the second embodiment, it can be driven by the nth gate drive circuit and the n+1th gate gate shared circuit. Furthermore, the anti-noise circuit 19 includes a plurality of switching elements, and each switching element provides a different current path. The switching elements can 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 driving circuit, and the transistor M8 is coupled to Connected between the first reference signal VSS1 and the pull-up control signal (pull-up control potential An+1) of the n+1th gate driving circuit. Therefore, each stage of the gate driving 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 FIG. 3 , which is a circuit diagram of a second embodiment of the gate driving 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 prone to leakage through the transistor, so reducing the voltage level of the cross voltage Vds can reduce the leakage current phenomenon. Vds refers to the voltage across the transistor input and output. 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 VSS1 in the second embodiment, 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 to the touch detection period (such as Touch#1, Touch#2 or Touch#8 in the first picture C) 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 degradation of the display quality. However, the transistors M3 and M14 in the embodiment in FIG. 3 can selectively reduce the cross-voltage Vds according to the degree of reducing the leakage current. The embodiment does not limit the transistors M3 and M14 to reduce the voltage of the cross-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 the first picture C). voltage level.

Please refer to FIG. 4 , which is a circuit diagram of a third embodiment of the gate driving circuit of the present invention. As shown in the figure, the switching elements of the anti-noise circuit 19 can be changed from the implementation of the second and third figures to at least two of the switching elements shown in the fourth figure in series with each other. In the embodiment The number of switching elements connected in series may be two or more. In this way, at least two switching elements of the 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 driving circuit, two transistors M6, M16, M8 are connected in series , M15. In the fourth figure, a transistor M15 is connected in series with the path from the transistor M8 to the first reference signal VSS1, and a transistor M16 is connected in series with 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 cycle of the anti-noise circuit 19 is maintained at 100%, the effect of the leakage current 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 both coupled to the first reference signal VSS1 during the display period and the touch detection period.

Please refer to FIG. 5 , which is a circuit diagram of a fourth embodiment of the gate driving circuit of the present invention. As shown in the figure, the anti-noise circuit 19 includes the series-connected transistors M6 and M16 and the series-connected transistors M8 and M15 to reduce the degree of 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, so that the transistor M3 can be used during touch detection (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, Touch #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 FIG. 6 , which is a circuit diagram of a fifth embodiment of the gate driving circuit of the present invention. As shown in the figure, the gate driving circuit includes an energy storage element CTH, which is coupled between the pull-up control terminal C1 of the pull-up circuit 15 and the pull-up output terminal VOUT, wherein 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 (node An) can be increased, the lifting amount 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, slowing down The pull-up controls the leakage current speed of the potential An.

Please refer to FIG. 7 , which is a circuit diagram of a sixth embodiment of the gate driving 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 Figure 6, it is also possible to refer to the technical contents of the embodiments in Figures 2 to 5, and the pull-down control circuit 13 and 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 (eg, Touch#1, Touch#2 or Touch#8 in the first C diagram), the transistors M3 and M14 are coupled between the pull-up circuit 15 and the second reference signal VSS2.

Please refer to FIG. 8 , which is a simulation diagram of an embodiment of the variation of the pull-up control potential of the present invention. As shown in the figure, the variation of the pull-up control potential An under a high temperature environment (eg, 85° C.) is shown, and the pull-up control potential An can reduce the influence of the leakage current through the above different embodiments. Therefore, the quasi-position of the pull-up control potential An can be compared with the different embodiments of the present invention (such as An(1), An(2), An(3) under a high temperature environment without generally 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 has little difference, 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 current path, causing the pull-up control potential An to gradually decrease. First of all, under the condition that the leakage current is generally not improved, it is assumed 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 is Reduced by 14.94V due to leakage current. Furthermore, the pull-up control potential An(1) of the embodiment in the third figure is assumed to have an initial level of 12.79V during the display period, and the pull-up control potential An(1) gradually decreases after entering the touch detection period. 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 of the second figure does improve the magnitude of the reduction of the pull-up control potential An(1) due to the leakage current.

Referring back to FIG. 8, 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) 2) Gradually reduce to 5.03V, in other words, the pull-up control potential An(2) is reduced by 8.27V due to the influence of leakage current, that is, the fourth embodiment can also improve the reduction of the pull-up control potential An(2) due to leakage current. Amplitude. In the pull-up control potential An(3) of the embodiment in Fig. 5, the initial level during the display period is assumed to be 13.30V, and after entering the touch detection period, the pull-up control potential An(3) gradually decreases to 8.67V 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 leakage current is smaller when the gate drive circuit 10 includes the implementation of the third and fourth diagrams, so the upper The difference between the level of the pull control potential An(3) during the display period and the touch detection period is smaller. In the pull-up control potential An(4) of the embodiment in Fig. 7, the initial level during the display period is assumed to be 13.28V, and after entering the touch detection period, the pull-up control potential An(4) gradually decreases to 9.41V 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 driving circuit 10 of the embodiment of FIG. 7 can control the pull-up control more effectively than other embodiments. The falling slope of the potential An(4).

To sum up, the present 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 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 driving circuit further includes a pre-reset circuit or an 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 are coupled to the first reference signal during the display period and are coupled to the second reference signal during the touch detection period . The voltage level of the second reference signal is higher than that of the first reference signal. In this way, the gate driving circuit is applied to the in-cell touch structure, and the leakage current is reduced, so that the output pulse can effectively control the pixel transistor.

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 driver circuit 30: Embedded 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 control potential C1: Pull-up control terminal CLK1: Clock signal CTH: energy storage element Frame N: Frame period Frame N+1: Frame period 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: VDD supply voltage during touch detection VOUT: pull-up output Vref: reference potential terminal VSS1: The first reference signal VSS2: Second reference signal

Figure 1 A: It is a schematic diagram of an embodiment of an in-cell touch panel and a driving circuit of the present invention; Figure 1 B: It is a schematic diagram of an embodiment of the driving mode of the gate driving circuit of the present invention; The first C diagram: it is a timing diagram of an embodiment of the long-H driving mode of the gate driving circuit of the present invention; The second figure: it is the circuit diagram of the first embodiment of the gate driving 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 a circuit diagram of the third embodiment of the gate driving circuit of the present invention; Figure 5: It is a circuit diagram of the fourth embodiment of the gate driving circuit of the present invention; The sixth figure: it is the circuit diagram of the fifth embodiment of the gate driving circuit of the present invention; Figure 7: It is a circuit diagram of the sixth embodiment of the gate driving circuit of the present invention; and Figure 8: It is a high-temperature simulation diagram of an embodiment of the variation of the pull-up control potential of the present invention.

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 control potential

C1: Pull-up 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: Second reference signal

Claims (16)

A gate drive circuit of a display panel, comprising: a pull-up circuit, including a pull-up control terminal and outputting a gate signal; a pull-up control circuit coupled to the pull-up control terminal of the pull-up circuit and controlling a pull-up control potential of the pull-up control terminal; A 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 potential terminal is coupled to a first reference signal during a display period, and the reference potential terminal is at A second reference signal is coupled during a touch detection period, and the voltage level of the second reference signal is higher than the voltage level of the first reference signal; and A 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 driving circuit of a 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 driving circuit of 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 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 as claimed in claim 1, comprising: An anti-noise circuit, wherein the anti-noise circuit includes a plurality of switching elements, each switching element provides a different current path, and the anti-noise circuit is coupled to the pull-up control terminal of the pull-up circuit, the anti-noise circuit The noise circuit maintains the pull-up control voltage at the voltage level of the first reference signal during the touch detection period. A gate drive circuit of a display panel, comprising: a pull-up circuit, including a pull-up control terminal and outputting a gate signal; a pull-up control circuit coupled to the pull-up control terminal of the pull-up circuit and controlling 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 is coupled to a first reference signal during a display period; and An 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 gate drive circuit of a display panel as claimed in 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 potential of the pull-up control terminal to a first reference signal during a display period and a touch detection period voltage level. The gate drive circuit of a display panel as claimed in claim 5, comprising: A 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 to the voltage level of a first reference signal during a display period. During the control detection period, the pull-up control potential of the pull-up control terminal is reset to the voltage level of a second reference signal. The gate driving circuit of a display panel according to claim 7, 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 driving circuit of a display panel according to claim 7, 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 For the 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 of a display panel, comprising: a pull-up circuit, comprising a pull-up control terminal and a pull-up output terminal, and outputs a gate signal; a pull-up control circuit coupled to the pull-up control terminal of the pull-up circuit and controlling a pull-up control potential of the pull-up control terminal; a pull-down control circuit, which is coupled to the pull-up control circuit and the pull-up circuit, and the pull-down control circuit includes a reference potential terminal, and the reference potential terminal is coupled to a first reference signal during a display period; an energy storage element coupled between the pull-up control terminal and the pull-up output terminal of the pull-up circuit; and A 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 driving circuit of a display panel according to claim 10, wherein the pre-reset circuit resets the pull-up control potential of the pull-up control terminal during a display period and a touch detection period as a first reference The voltage level of the signal. The gate driving circuit of a display panel according to claim 10, 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, 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, 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 a display panel according to claim 12, 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 driving circuit of a display panel according to claim 12, 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 For the reference signal, 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 14, further comprising an anti-noise circuit, wherein the anti-noise circuit comprises a plurality of switching elements, each of the switching elements respectively provides a different current path, and the switching elements are in The display period and the touch detection period are coupled between the pull-up circuit and the first reference signal. The gate driving circuit of a display panel as claimed in claim 14, further comprising an anti-noise circuit, wherein the anti-noise circuit comprises a plurality of switching elements, and at least two switching elements of the switching elements are connected in series with the display period. The touch detection period is coupled between the pull-up circuit and the first reference signal.

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