Touch panel, display device and display driving method

Abstract

The invention provides a touch panel, a display device and a display driving method, and relates to the technical field of display, the touch panel comprises a display panel and a touch sensing layer arranged on the light emitting side of the display panel, and the display panel comprises a gate driving circuit and a plurality of control signal lines; the control signal line is electrically connected with the gate drive circuit; the first control signal line is used for receiving a first control signal sent by the time sequence control circuit at a first moment, and the second control signal line is used for receiving a second control signal sent by the time sequence control circuit in a delayed manner based on the first moment; the first control signal and the second control signal are gate drive control signals of the same type; the moment when the control signal line receives the first signal edge is earlier than the moment when the control signal line receives the second signal edge; each first signal edge of the second control signals is aligned with one second signal edge of the first control signals. Noise of the touch panel can be reduced, and the touch effect of the touch panel can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a touch panel, a display device and a display driving method. Background Art

[0002] In the related art, a touch panel can be manufactured by manufacturing a touch sensor layer (Touch Sensor) on a color filter (CF) substrate to obtain an Oncell touch panel. When a user touches the Oncell touch panel with a finger, the touch sensor layer identifies the finger touch point and responds.

[0003] Oncell touch panel includes a gate drive circuit composed of multiple gate drive units such as gate drive integration on array substrate (GateOnArray, GOA). The timing control circuit transmits timing control signals, such as STV signals, CLK signals and other GOA control signals, to the gate drive circuit through control signal lines.

[0004] In the current Oncell touch panel, the control signal line and the touch sensing layer are located on the upper and lower sides of the color filter substrate, and coupling capacitance may be formed between the control signal line and the touch sensing layer. When there is a signal change on the control signal line, the coupling capacitance will couple the corresponding noise to the signal of the touch sensing layer, causing the touch function of the Oncell touch panel to fail. Summary of the invention

[0005] The present application provides a touch panel, a display device and a display driving method, which can solve the problem of failure of the touch function of the Oncell touch panel caused by the coupling capacitance between the control signal line and the touch sensing layer.

[0006] In a first aspect, the present application provides a touch panel, the touch panel comprising: a display panel, and a touch sensing layer arranged on a light-emitting side of the display panel, the display panel comprising a gate drive circuit and a plurality of control signal lines; the control signal lines are electrically connected to the gate drive circuit, and the control signal lines are also used to connect to a timing control circuit of the touch panel;

[0007] The plurality of control signal lines include a first control signal line and a second control signal line, the first control signal line is used to receive a first control signal sent by the timing control circuit at a first moment, and the second control signal line is used to receive a second control signal sent by the timing control circuit after a delay based on the first moment; the first control signal and the second control signal are gate drive control signals of the same type;

[0008] Wherein, the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when the second signal edge is received; within one frame time, each first signal edge of the second control signal is aligned with a second signal edge of the first control signal; the first signal edge represents a signal jump from a first level to a second level, and the second signal edge represents a signal jump from the second level to the first level.

[0009] Optionally, the first control signal line and the second control signal line are frame start signal lines respectively;

[0010] The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge;

[0011] The first signal edge of the second control signal received by the second control signal line is aligned with the second signal edge of the first control signal received by the first control signal line.

[0012] Optionally, the first control signal line and the second control signal line are clock signal lines respectively;

[0013] The first control signal and the second control signal are clock signals respectively, and the clock signal is in a level switching mode in a blank area of ​​the one-frame picture time, and the level switching mode indicates that the clock signal switches the level state between the first level and the second level;

[0014] Each first signal edge of the clock signal received by the second control signal line is aligned with one second signal edge of the clock signal received by the first control signal line.

[0015] Optionally, the display panel includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area;

[0016] The gate driving circuit comprises a first driving circuit and a second driving circuit; the first driving circuit is arranged in the first border area, and the second driving circuit is arranged in the second border area; the first driving circuit and the second driving circuit respectively comprise gate driving units cascaded to each other;

[0017] The multiple control signal lines include a pair of the first control signal line and the second control signal line; the first drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line, and the second drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line.

[0018] Optionally, the plurality of control signal lines include two pairs of the first control signal line and the second control signal line, and the first control signal line and the second control signal line are frame start signal lines respectively;

[0019] The first pair of the frame start signal lines is arranged in the first border area; in the first pair of the frame start signal lines, the first control signal line is electrically connected to at least one of the gate drive units in the first drive circuit, and the second control signal line is electrically connected to at least one of the gate drive units in the first drive circuit; wherein, in the first pair of the frame start signal lines, the first control signal line receives the first control signal sent by the timing control circuit at the first sub-moment;

[0020] The second pair of frame start signal lines is arranged in the second border area; in the second pair of frame start signal lines, the first control signal line is electrically connected to at least one gate drive unit in the second drive circuit, and the second control signal line is electrically connected to at least one gate drive unit in the second drive circuit; wherein, in the second pair of frame start signal lines, the first control signal line receives the first control signal sent by the timing control circuit at the second sub-moment; the first moment includes the first sub-moment and the second sub-moment; the time difference between the first sub-moment and the second sub-moment is a row scan duration.

[0021] Optionally, the gate driving units cascaded to each other include: a first redundant unit, a second redundant unit, and N cascaded gate driving units; wherein N is a positive integer;

[0022] The first redundant unit is cascaded with the gate driving unit of the first stage among the N gate driving units, and the second redundant unit is cascaded with the gate driving unit of the second stage among the N gate driving units;

[0023] The first control signal line and the second control signal line are frame start signal lines respectively, the first control signal line is electrically connected to the first redundant unit, and the second control signal line is electrically connected to the second redundant unit;

[0024] The display panel further comprises a plurality of clock signal lines, wherein the clock signal lines are used to connect to the timing control circuit and receive clock signals sent by the timing control circuit;

[0025] The plurality of clock signal lines include a first clock signal line and a second clock signal line, the first clock signal line is electrically connected to the gate driving unit of the first stage, and the second clock signal line is electrically connected to the gate driving unit of the second stage;

[0026] Among them, the first clock signal line receives the clock signal sent by the timing control circuit at the second moment, and the time difference between the second moment and the first moment is four line scanning durations; the second clock signal line receives the clock signal sent by the timing control circuit at the third moment, and the time difference between the third moment and the second moment is two line scanning durations.

[0027] Optionally, the display panel includes a first display substrate and a second display substrate; the gate driving circuit and the plurality of control signal lines are arranged in the first display substrate, and the touch sensing layer is arranged on a side of the second display substrate away from the first display substrate;

[0028] The display panel further comprises: a light shielding layer disposed on a side of the second display substrate close to the first display substrate; the light shielding layer comprises a first groove;

[0029] The orthographic projection of the first groove on the first surface is the first orthographic projection, the orthographic projection of the control signal line on the first surface is the second orthographic projection, and the orthographic projection of the touch sensing layer on the first surface is the third orthographic projection; the first surface is the surface of the second display substrate close to the first display substrate;

[0030] The second orthographic projection and the third orthographic projection do not overlap each other; the first orthographic projection is located between the second orthographic projection and the third orthographic projection, so that the first groove disconnects the coupling capacitance between the control signal line and the touch sensing layer.

[0031] Optionally, the plurality of control signal lines include a frame start signal line; the touch sensing layer includes a first electrode;

[0032] The orthographic projection of the first electrode on the first surface is a first sub-projection, and the third orthographic projection includes the first sub-projection;

[0033] The second orthographic projection corresponding to the frame start signal line does not overlap with the first sub-projection; the first orthographic projection is located between the first sub-projection and the second orthographic projection corresponding to the frame start signal line, so that the first groove disconnects the coupling capacitance between the frame start signal line and the first electrode.

[0034] Optionally, the plurality of control signal lines include a clock signal line; the touch sensing layer includes a second electrode;

[0035] The orthographic projection of the second electrode on the first surface is a second sub-projection, and the second orthographic projection includes the second sub-projection;

[0036] The first orthographic projection corresponding to the clock signal line does not overlap with the second sub-projection; the first orthographic projection is located between the second sub-projection and the second orthographic projection corresponding to the clock signal line, so that the first groove disconnects the coupling capacitance between the clock signal line and the second electrode.

[0037] Optionally, the first orthographic projection overlaps with at most one of the second orthographic projection and the third orthographic projection.

[0038] Optionally, the shape of the first orthographic projection is a rectangle; the length of the first edge of the first orthographic projection is a first length;

[0039] The orthographic projection of the light shielding layer on the first surface and the second orthographic projection have an overlapping area, and the length of the second edge of the overlapping area is a second length;

[0040] The first length is not less than the second length.

[0041] Optionally, the first display substrate includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area;

[0042] The control signal line is arranged in the first frame area, and the light shielding layer includes at least one first groove on a side close to the first frame area;

[0043] and / or,

[0044] The control signal line is arranged in the second frame area, and the side of the light shielding layer close to the second frame area includes at least one first groove.

[0045] Optionally, a side of the light shielding layer close to the first frame area includes two first grooves, and the first orthographic projections corresponding to the two first grooves do not overlap;

[0046] and / or,

[0047] A side of the light shielding layer close to the second frame area includes two first grooves, and the first orthographic projections corresponding to the two first grooves do not overlap.

[0048] Optionally, the non-display area further includes a third frame area and a fourth frame area arranged on opposite sides of the display area; the third frame area is adjacent to the first frame area and the second frame area respectively;

[0049] The side of the light shielding layer close to the third frame area includes at least one second groove, and the side of the light shielding layer close to the fourth frame area includes at least one second groove;

[0050] One of the second grooves in the third frame area is connected to one of the first grooves in the first frame area and one of the first grooves in the second frame area respectively;

[0051] One of the second grooves in the fourth frame area is respectively connected with one of the first grooves in the first frame area and one of the first grooves in the second frame area;

[0052] The first groove and the second groove communicated with each other form an annular groove.

[0053] Optionally, the orthographic projection of the second groove on the first surface is a fourth orthographic projection, and the fourth orthographic projection does not overlap with the third orthographic projection.

[0054] Optionally, the shape of the orthographic projection of the annular groove on the first surface is an annular rectangle.

[0055] In a second aspect, the present application provides a display device, comprising the touch panel as described in the first aspect.

[0056] In a third aspect, the present application provides a display driving method for driving the touch panel as described in the first aspect, the display driving method comprising:

[0057] Sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, so that each first signal edge of the second control signal is aligned with a second signal edge of the first control signal within a frame time;

[0058] Wherein, the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when the second signal edge is received; the first control signal and the second control signal are the same type of gate drive control signals; the first signal edge represents that the signal jumps from a first level to a second level, and the second signal edge represents that the signal jumps from the second level to the first level.

[0059] Optionally, sending the first control signal to the first control signal line at the first moment, and sending the second control signal to the second control signal line after a delay based on the first moment, includes:

[0060] Sending a first control signal to the first control signal line at the first time, and sending a second control signal to the second control signal line after a delay based on the first time, so that a first signal edge of the second control signal is aligned with a second signal edge of the first control signal;

[0061] The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge; different pairs of frame start signal lines correspond to different first moments.

[0062] Optionally, sending the first control signal to the first control signal line at the first moment, and sending the second control signal to the second control signal line after a delay based on the first moment, includes:

[0063] Sending a first control signal to the first control signal line at the first time, and sending a second control signal to the second control signal line after a delay based on the first time, so that each first signal edge of the second control signal is aligned with one second signal edge of the first control signal;

[0064] Among them, the first control signal and the second control signal are clock signals respectively, and the clock signal is in a level switching mode in the blank area of ​​the one-frame picture time, and the level switching mode represents that the clock signal switches the level state between the first level and the second level; different pairs of clock signal lines correspond to different first moments.

[0065] A touch panel, a display device and a display driving method provided by the present application have at least the following advantages: within a frame time, for each first signal edge of the second control signal, there is a second signal edge in the first control signal aligned with it. And the first signal edge represents that the signal jumps from the first level to the second level, and the second signal edge represents that the signal jumps from the second level to the first level, that is, the first signal edge and the second signal edge represent opposite signal change trends. In this way, the noise trends coupled out by the first signal edge and the second signal edge on the signal of the touch sensing layer due to the action of the coupling capacitor are also opposite. The coupling effect of each first signal edge of the second control signal on the noise can be offset by the coupling effect of a second signal edge in the first control signal on the noise. Therefore, the signal noise of the touch sensing layer caused by the signal change represented by the first signal edge and the second signal edge on the first control signal line and the second control signal line can be reduced, and the problem of failure of the touch function of the Oncell touch panel caused by the action of the coupling capacitor between the control signal line and the touch sensing layer can be improved, and the touch effect of the touch panel can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0067] Figure 1 It is a structural schematic diagram of a touch panel in the related art;

[0068] Figure 2 This is one of the structural schematic diagrams of a touch panel provided in an embodiment of the present application;

[0069] Figure 3 is a schematic diagram of a level switching mode of a clock signal provided in an embodiment of the present application;

[0070] Figure 4 It is a schematic diagram of a noise generating area of ​​a touch panel in the related art;

[0071] Figure 5 is a schematic diagram of the RX Noise waveform of a touch panel in the related art;

[0072] Figure 6 It is a timing diagram of a frame start signal in the related art;

[0073] Figure 7 is a timing diagram of two pairs of frame start signals provided in an embodiment of the present application;

[0074] Figure 8 is a timing diagram of a gate drive control signal provided in an embodiment of the present application;

[0075] Fig. 9 is a schematic structural diagram of a gate drive circuit provided in an embodiment of the present application;

[0076] Fig.10 is a schematic diagram of an RX Noise waveform of a touch panel provided in an embodiment of the present application;

[0077] Fig.11 It is a schematic diagram of the Touch signal of the transmitting electrode of the NG sample in the related art;

[0078] Fig.12 It is a schematic diagram of the Touch signal of the transmitting electrode of the OK sample in the related art;

[0079] Fig.13 is a schematic diagram of the TX Noise waveform of a touch panel in the related art;

[0080] Fig.14 It is a timing diagram of a clock signal in the related art;

[0081] Fig.15 is a waveform diagram of TX Noise of a touch panel in the related art;

[0082] Fig.16 is a waveform diagram of TX Noise of a touch panel provided in an embodiment of the present application;

[0083] Fig.17 is a schematic diagram of the coupling capacitance between the GOA signal line and the touch sensing layer in the related art;

[0084] Fig.18 is a cross-sectional view of a first groove provided in an embodiment of the present application;

[0085] Fig.19 It is a schematic diagram of a light shielding layer provided in an embodiment of the present application with a single groove;

[0086] Fig. 20 It is a schematic diagram of a light shielding layer provided by an embodiment of the present application with double grooves;

[0087] Fig.21 It is a schematic diagram of a light shielding layer provided with an annular groove according to an embodiment of the present application;

[0088] Fig. 22 It is a schematic diagram of a light shielding layer provided by an embodiment of the present application with two annular grooves. DETAILED DESCRIPTION

[0089] The following will be combined with the drawings in some embodiments to clearly and completely describe the technical solutions in some embodiments. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0090] In some embodiments, a plurality of signals have a first level and a second level. The first level and the second level only represent that the level of the signal has two states, and do not represent that the first level or the second level has a specific value.

[0091] In the related art, the Oncell touch panel has a touch sensor layer (Touch Sensor) sensing pattern (Sensor Pattern) made on a CF substrate in order to be thin and light. For example, a single-layer indium tin oxide (ITO) pattern is made on the back of the CF substrate. When a user touches the panel with a finger, the parasitic capacitance on the ITO Pattern changes. The touch point of the finger is identified and reacted to by detecting the capacitance change.

[0092] At present, some Oncell touch panels are prone to touch panel (TP) noise, namely TPNoise, which is related to the fluctuation of black matrix (BM) resistance. Figure 1 As shown, this is because the GOA signal line forms a coupling capacitance ΔC to the touch sensing layer through the BM, and the coupling capacitance ΔC is between 0 and C1×C2 / (C1+C2), where the capacitance C1 is the coupling capacitance between the GOA signal line and the BM, and the capacitance C2 is the coupling capacitance between the BM and the touch sensing layer 20. The smaller the BM resistance, the stronger the coupling capacitance. When the signal of the GOA signal line changes, the touch panel will have TPNoise due to the coupling effect, causing the touch function to fail.

[0093] Figure 2 is one of the structural schematic diagrams of a touch panel provided in an embodiment of the present application, such as Figure 2 As shown, the touch panel includes: a display panel 10, and a touch sensing layer 20 arranged on the light-emitting side of the display panel 10, the display panel 10 includes a gate drive circuit and a plurality of control signal lines; the control signal lines are electrically connected to the gate drive circuit, and the control signal lines are also used to connect to the timing control circuit of the touch panel;

[0094] The plurality of control signal lines include a first control signal line and a second control signal line, the first control signal line is used to receive a first control signal sent by the timing control circuit at a first moment, and the second control signal line is used to receive a second control signal sent by the timing control circuit after the first moment; the first control signal and the second control signal are gate drive control signals of the same type;

[0095] Among them, the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when it receives the second signal edge; within one frame time, each first signal edge of the second control signal is aligned with a second signal edge in the first control signal; the first signal edge represents that the signal jumps from the first level to the second level, and the second signal edge represents that the signal jumps from the second level to the first level.

[0096] In some embodiments, the touch panel provided in this embodiment may be an Oncell touch panel, for example, a touch sensing layer 20 (Touch Sensor) is fabricated on the light-emitting side of a color filter (CF) substrate in the touch panel. The touch panel includes a display panel 10, which may include an array substrate and a CF substrate, and a touch sensing layer 20 is disposed on the light-emitting side of the CF substrate.

[0097] In some embodiments, the display panel 10 includes a gate driving circuit and a plurality of control signal lines, the gate driving circuit includes mutually cascaded gate driving units, the gate driving units are such as GOA units, and the control signal lines are such as frame start (STV) signal lines, clock (CLK) signal lines and other GOA signal lines. The control signal lines are electrically connected to at least one gate driving unit, for example, the STV signal lines are respectively electrically connected to the first-stage GOA units, the second-stage GOA units and other GOA units in the mutually cascaded GOA units, and the CLK signal lines are respectively electrically connected to multiple GOA units in the mutually cascaded GOA units.

[0098] In some embodiments, the control signal line can also be electrically connected to the timing control circuit of the touch panel to receive the gate drive control signal sent by the timing control circuit, such as the STV signal, CLK signal and other GOA control signals. The timing control circuit of the mobile phone and portable computer (Tablet PC, TPC) can be a display driver chip (Display Driver IC, DDIC), such as the GOA module of DDIC, which can provide the GOA control signal. The gate drive control signal is provided by the timing controller (Timing Controller, TCON) and the level shifter (Level shifter, LS) chip in medium and large-sized display devices such as notebook computers (NoteBookcomputer, NB).

[0099] In some embodiments, the first control signal line and the second control signal line are paired control signal lines, and the first control signal line and the second control signal line are used to transmit the same type of gate drive control signal. The multiple control signal lines include at least one pair of first control signal lines and second control signal lines, and the gate drive control signals transmitted by different pairs of control signal lines may be the same or different, which is not limited in the embodiments of the present application. For example, the first control signal line and the second control signal line are a pair of STV signal lines, and / or, the first control signal line and the second control signal line are a pair of CLK signal lines.

[0100] In some embodiments, the first control signal and the second control signal are gate drive control signals of the same type, the gate drive control signal includes a first signal edge and a second signal edge, the time when the control signal line receives the first signal edge of the gate control signal is earlier than the time when the control signal line receives the second signal edge, the first signal edge represents a signal jump from a first level to a second level, and the second signal edge represents a signal jump from the second level to the first level.

[0101] For example, the gate drive signal includes a rising edge and a falling edge, the rising edge represents that the signal jumps from a low level to a high level, and the falling edge represents that the signal jumps from a high level to a low level. The first signal edge can be a rising edge, and the second signal edge is a falling edge, or the first signal edge is a falling edge, and the second signal edge is a rising edge.

[0102] In some embodiments, the first time interval is a time interval corresponding to the first signal edge, and the second time interval is a time interval corresponding to the second signal edge. Within one frame of picture time, the first time interval corresponding to each first signal edge of the second control signal at least partially overlaps with the second time interval corresponding to a second signal edge in the first control signal, so that within one frame of picture time, each first signal edge of the second control signal is aligned with a second signal edge in the first control signal. For example, within one frame of picture time, each rising time interval of the second control signal at least partially overlaps with a falling time interval in the first control signal, wherein the rising time interval represents the time interval corresponding to the rising edge, and the falling time interval represents the time interval corresponding to the falling edge.

[0103] In some embodiments, the first control signal line is electrically connected to the timing control circuit and receives a first control signal sent by the timing control circuit at a first moment, and the second control signal line is electrically connected to the timing control circuit and receives a second control signal sent by the timing control circuit after a delay based on the first moment. Since the second control signal is sent after a delay based on the first moment when the timing control circuit sends the first control signal, i.e., the first moment, compared to the first control signal, when the signal transmission distance time between the timing control circuit and each control signal line is approximately equal, the moment when the second control signal line receives the first first signal edge of the second control signal is later than the moment when the first control signal line receives the first first signal edge of the first control signal.

[0104] And within one frame time, for each first signal edge of the second control signal, there is a second signal edge aligned with it in the first control signal. The first signal edge represents that the signal jumps from the first level to the second level, and the second signal edge represents that the signal jumps from the second level to the first level, that is, the first signal edge and the second signal edge represent opposite signal change trends. In this way, the noise trends coupled out by the first signal edge and the second signal edge on the signal of the touch sensing layer 20 due to the effect of the coupling capacitor are also opposite. Furthermore, the coupling effect of each first signal edge of the second control signal on the noise can be offset by the coupling effect of one second signal edge of the first control signal on the noise.

[0105] Therefore, the signal noise of the touch sensing layer 20 caused by the signal changes represented by the first signal edge and the second signal edge on the first control signal line and the second control signal line can be reduced, the problem of failure of the touch function of the Oncell touch panel caused by the coupling capacitance between the control signal line and the touch sensing layer 20 can be improved, and the touch effect of the touch panel can be improved.

[0106] like Figure 1 As shown, the GOA signal line is the STV signal line, and a coupling capacitor is formed between the STV signal line and the touch sensing layer 20 through BM. When the STV signal on the STV signal line changes, the coupling effect causes noise to appear on the signal of the touch sensing layer 20. In addition, the STV signal line is located at the frame outside the display area, and the touch sensing (Touch) signal closer to the frame is more easily affected, and the greater the signal noise generated. For example, in some current touch panels, part of the receiving electrodes (RX) of the touch sensing layer 20 are close to the STV signal line in the frame area, and the receiving electrodes RX are easy to form a coupling capacitor with the STV signal line, so part of the RX signal of the touch sensing layer 20 has RX Noise, and it is manifested as the RX Noise changes with the change of the STV signal.

[0107] Optionally, the first control signal line and the second control signal line are frame start signal lines respectively;

[0108] The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge;

[0109] A first signal edge of the second control signal received by the second control signal line is aligned with a second signal edge of the first control signal received by the first control signal line.

[0110] In some embodiments, the first control signal line and the second control signal line are paired STV signal lines, and the plurality of control signal lines include at least one pair of STV signal lines. The first control signal line and the second control signal line are used to transmit STV signals, that is, the first control signal and the second control signal are STV signals, respectively. The frame start signal includes a rising edge and a falling edge. The first signal edge can be a rising edge, and the second signal edge is a falling edge, or the first signal edge is a falling edge, and the second signal edge is a rising edge.

[0111] In some embodiments, for a pair of STV signal lines, the time when the second control signal line receives the first first signal edge of the second control signal is later than the time when the first control signal line receives the first first signal edge of the first control signal. In addition, the first signal edge of the second control signal received by the second control signal line is aligned with the second signal edge of the first control signal received by the first control signal line. In this way, in each pair of STV signal lines, the coupling effect of the second signal edge of the first control signal on noise and the coupling effect of the first signal edge of the second control signal on noise can be offset.

[0112] Therefore, the signal noise of the touch sensing layer 20 caused by the signal change represented by the first signal edge and the second signal edge on the paired STV signal line can be reduced, the problem of failure of the touch function of the Oncell touch panel caused by the coupling capacitance between the STV signal line and the touch sensing layer 20 can be improved, and the touch effect of the touch panel can be improved.

[0113] like Figure 1 As shown, the GOA signal line is a CLK signal line, and a coupling capacitor is formed between the CLK signal line and the touch sensing layer 20 through BM. When the CLK signal on the CLK signal line changes, the coupling effect causes noise to appear on the signal of the touch sensing layer 20. In addition, the CLK signal line is located at the frame outside the display area, and the touch sensing (Touch) signal closer to the frame is more easily affected, and the generated signal noise is greater. For example, in some current touch panels, part of the transmitting electrode (TX) of the touch sensing layer 20 is close to the CLK signal line at the frame, and the transmitting electrode TX is easy to form a coupling capacitor with the CLK signal line, so part of the TX signal of the touch sensing layer 20 has TX Noise, and it is manifested as TX Noise existing in the blank area within a frame time.

[0114] Optionally, the first control signal line and the second control signal line are clock signal lines respectively;

[0115] The first control signal and the second control signal are clock signals respectively. The clock signal is in a level switching mode in a blank area of ​​a frame time. The level switching mode indicates that the clock signal switches between a first level and a second level.

[0116] Each first signal edge of the second control signal received by the second control signal line is aligned with a second signal edge of the first control signal received by the first control signal line.

[0117] In some embodiments, the first control signal line and the second control signal line are paired CLK signal lines, and the plurality of control signal lines include at least one pair of CLK signal lines. The first control signal line and the second control signal line are used to transmit CLK signals, that is, the first control signal and the second control signal are CLK signals respectively. The CLK signal is in a level switching mode in the Blank area of ​​a frame time, that is, the CLK signal switches the level state between the first level and the second level, and the CLK signal still includes multiple rising edges and multiple falling edges in the Blank area. Figure 3 As shown, the CLK signal can continuously switch between the VGH voltage and the VGL voltage, the VGH voltage is, for example, 15 volts (V), and the VGL voltage is, for example, -11 V. The first signal edge can be a rising edge, and the second signal edge is a falling edge, or the first signal edge is a falling edge, and the second signal edge is a rising edge.

[0118] In some embodiments, for a pair of CLK signal lines, the moment when the second control signal line receives the first first signal edge of the second control signal is later than the moment when the first control signal line receives the first first signal edge of the first control signal. In addition, each first signal edge of the second control signal received by the second control signal line is aligned with a second signal edge of the first control signal received by the first control signal line. In this way, in each pair of CLK signal lines, within the Blank area of ​​a frame time, the coupling effect of each first signal edge of the second control signal on noise can be offset by the coupling effect of a second signal edge of the first control signal on noise.

[0119] In some embodiments, for a pair of CLK signal lines, the timing control circuit may send a first control signal, i.e., a CLK signal, to a first control signal line at a first moment, and then send a second control signal, i.e., a CLK signal, to a second control signal line after a half clock cycle based on the first moment, so that a first signal edge of the second control signal is aligned with a second signal edge of the first control signal, wherein a half clock cycle refers to half of a period of the CLK signal.

[0120] Therefore, the signal noise of the touch sensing layer 20 caused by the signal change represented by the first signal edge and the second signal edge on the paired CLK signal lines in the Blank area of ​​one frame time can be reduced, and the problem of failure of the touch function of the Oncell touch panel caused by the coupling capacitance between the CLK signal line and the touch sensing layer 20 can be improved, thereby improving the touch effect of the touch panel.

[0121] In the related art, the GOA signal line is located in the border area on both sides of the touch panel, and the distance is as follows: Figure 4 The touch sensing (Touch) signals closest to the border regions on both sides are most susceptible to being affected and generate the most noise.

[0122] Optionally, the display panel 10 includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area;

[0123] The gate driving circuit includes a first driving circuit and a second driving circuit; the first driving circuit is arranged in the first frame area, and the second driving circuit is arranged in the second frame area; the first driving circuit and the second driving circuit respectively include mutually cascaded gate driving units;

[0124] The plurality of control signal lines include a pair of first control signal lines and a second control signal line; the first drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line, and the second drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line respectively.

[0125] In some embodiments, gate drive units cascaded to each other are respectively arranged in the two side frame areas of the touch panel, which are referred to as the first drive circuit and the second drive circuit. Specifically, the gate drive circuit includes the first drive circuit and the second drive circuit, the first drive circuit is arranged in the first frame area, and the second drive circuit is arranged in the second frame area. The first frame area and the second frame area are the two side frame areas opposite to the display area in the non-display area, that is, the first frame area and the second frame area arranged on the opposite sides of the display area.

[0126] In some embodiments, the plurality of control signal lines include a first control signal line and a second control signal line in pairs, for example, the plurality of control signal lines include a pair of STV signal lines and / or a pair of CLK signal lines. The first drive circuit is electrically connected to at least one pair of STV signal lines and / or at least one pair of CLK signal lines. The second drive circuit is electrically connected to at least one pair of STV signal lines and / or at least one pair of CLK signal lines.

[0127] The same pair of control signal lines are connected to the driving circuit of the same side frame area. In this way, when coupling capacitance is formed between the same pair of control signal lines and the touch sensing layer 20, by adjusting the timing of the gate drive control signal on the same pair of control signal lines, the signal noise of the touch sensing layer 20 caused by the signal change represented by the first signal edge and the second signal edge on the same pair of control signal lines can offset each other, thereby achieving the purpose of reducing the noise of the touch panel, thereby improving the touch effect of the touch panel.

[0128] Table 1 Improvement of Touch signal of front RX electrode

[0129] RX1 4 8 2 -50 -100 -156 -6 10 7 RX25 -3 4 14 -25 -38 -89 3 6 4

[0130] As shown in Table 1, RX1 is a group of receiving electrodes RX closest to the border area on one side of the first driving circuit, and RX25 is a group of receiving electrodes RX closest to the border area on one side of the second driving circuit. Table 1 shows the Touch signal corresponding to RX1 and the Touch signal corresponding to RX25. Due to the coupling capacitance between the receiving electrodes RX and the STV signal line, the signal noise generated on the two groups of receiving electrodes RX1 and RX25 close to the border areas on both sides is more obvious.

[0131] Figure 5 : is a schematic diagram of the RX Noise waveform of a touch panel in the related art, such as Figure 5 As shown in the figure, the RX Noise waveforms of the two groups of receiving electrodes RX1 and RX25 on the two touch panels are compared. Both the two groups of receiving electrodes RX1 and RX25 have large noise, and the noise changes with the STV signal. Among them, near the rising and falling edges of the STV signal, the voltage value of the Touch signal of RX1 corresponding to the first touch panel is 174 millivolts (mV) at the maximum and -46mV at the minimum, and the voltage value of the Touch signal of RX1 corresponding to the second touch panel is 128mV at the maximum and -28mV at the minimum. Figure 5 In the figure, the RX Noise corresponding to the first touch panel is larger than that of the second touch panel.

[0132] Optionally, the plurality of control signal lines include two pairs of first control signal lines and second control signal lines, and the first control signal lines and the second control signal lines are frame start signal lines respectively;

[0133] The first pair of frame start signal lines is arranged in the first frame area, and in the first pair of frame start signal lines, the first control signal line is electrically connected to at least one gate driving unit in the first driving circuit, and the second control signal line is electrically connected to at least one gate driving unit in the first driving circuit; wherein, in the first pair of frame start signal lines, the first control signal line receives a first control signal sent by the timing control circuit at a first sub-moment;

[0134] The second pair of frame start signal lines is arranged in the second border area, and in the second pair of frame start signal lines, the first control signal line is electrically connected to at least one gate driving unit in the second driving circuit, and the second control signal line is electrically connected to at least one gate driving unit in the second driving circuit; wherein, in the second pair of frame start signal lines, the first control signal line receives a first control signal sent by the timing control circuit at a second sub-moment; the first moment includes a first sub-moment and a second sub-moment; the time difference between the first sub-moment and the second sub-moment is a row scanning duration.

[0135] In some embodiments, the plurality of control signal lines include two pairs of STV signal lines. The first pair of STV signal lines is arranged in a first border area where the first drive circuit is located. Specifically, the first pair of STV signal lines includes a first control signal line and a second control signal line, the first control signal line is electrically connected to at least one gate drive unit in the first drive circuit, and the second control signal line is electrically connected to at least one gate drive unit in the first drive circuit. The second pair of STV signal lines is arranged in a second border area where the second drive circuit is located. Specifically, the second pair of STV signal lines includes a first control signal line and a second control signal line, the first control signal line is electrically connected to at least one gate drive unit in the second drive circuit, and the second control signal line is electrically connected to at least one gate drive unit in the second drive circuit.

[0136] like Figure 1 As shown, a coupling capacitor may be formed through BM between the STV signal lines in the two side frame regions of the display panel 10 and the receiving electrodes RX near the two side frame regions of the touch sensing layer 20. In this embodiment, by adjusting the STV signal driving timing on the paired STV signal lines, the first signal edge of the second control signal received by the second control signal line, that is, the STV signal, is aligned with the second signal edge of the first control signal received by the first control signal line, that is, the STV signal. In the paired STV signal lines, the coupling effect of the second signal edge of the first control signal on noise and the coupling effect of the first signal edge of the second control signal on noise cancel each other.

[0137] In some embodiments, for the first pair of STV signal lines in the first border area, when a coupling capacitance is formed between the first pair of STV signal lines and the receiving electrode RX of the touch sensing layer 20 close to the first border area, the coupling effect of the second signal edge in the first control signal on the noise and the coupling effect of the first signal edge of the second control signal on the noise cancel each other out, thereby reducing the signal change on the first pair of STV signal lines and the noise coupled to the signal of the receiving electrode RX of the touch sensing layer 20 close to the first border area.

[0138] In some embodiments, for the second pair of STV signal lines in the second border area, when a coupling capacitance is formed between the second pair of STV signal lines and the receiving electrode RX of the touch sensing layer 20 close to the second border area, the coupling effect of the second signal edge in the first control signal on the noise and the coupling effect of the first signal edge of the second control signal on the noise cancel each other out, thereby reducing the signal change on the second pair of STV signal lines and the noise generated by coupling on the signal of the receiving electrode RX of the touch sensing layer 20 close to the second border area.

[0139] Figure 6 It is a timing diagram of a frame start signal in the related art, such as Figure 6 As shown, for the four STV signals STV1 to STV4, the rising edge and falling edge of each STV signal respectively affect the signal of the receiving electrode RX. In addition, the rising edge of the STV signal pulls the signal to generate positively changing noise, while the falling edge of the STV signal pulls the signal to generate negatively changing noise, that is, the noise trends coupled by the rising edge and the falling edge on the signal of the touch sensing layer 20 are different.

[0140] In some embodiments, in the first pair of frame start signal lines, the first control signal line receives a first control signal sent by the timing control circuit at a first sub-time, and the second control signal line receives a second control signal sent by the timing control circuit after a delay based on the first sub-time. Figure 7 As shown, the first control signal received by the first pair of frame start signal lines is the frame start signal STV1, and the second control signal is the frame start signal STV3. In the second pair of frame start signal lines, the first control signal line receives the first control signal sent by the timing control circuit at the second sub-time, and the second control signal line receives the second control signal sent by the timing control circuit after a delay based on the second sub-time. For example, Figure 7 As shown, the first control signal received by the second pair of frame start signal lines is the frame start signal STV2, and the second control signal is the frame start signal STV4.

[0141] In some embodiments, the sending time corresponding to the first control signal received by the first control signal line of the first pair of frame start signal lines is the first sub-time, and the sending time corresponding to the first control signal received by the first control signal line of the second pair of frame start signal lines is the second sub-time. Among them, the sending times of the first control signals corresponding to the two pairs of frame start signal lines differ by one line scan time, that is, the time difference between the first sub-time and the second sub-time is one line scan time. In this way, the two pairs of frame start signals transmitted by the two pairs of frame start signal lines respectively drive the first drive circuit and the second drive circuit of the two side frame areas.

[0142] For example, Figure 7As shown, the time difference between the frame start signal STV1 and the frame start signal STV2 is a line scanning time length (1H). Figure 7 In the first pair of STV signals, the effect of the falling edge of the STV1 signal on the RX Noise and the effect of the rising edge of the STV3 on the RX Noise cancel each other out. Similarly, in the second pair of STV signals, the effect of the falling edge of the STV2 signal on the RX Noise and the effect of the rising edge of the STV4 on the RX Noise cancel each other out. Figure 7 , the signal noise of the receiving electrode RX is significantly improved.

[0143] In some embodiments, Figure 6 Taking the frame start signals STV1 and STV3 shown in the figure as examples, in the related art, the time difference between the rising edge of the STV1 signal and the rising edge of the STV3 signal is 2H. In this embodiment, in order to align the rising edge of the STV3 signal with the falling edge of the STV1 signal, the STV1 signal can be sent 2H in advance of the STV3 signal, or the STV3 signal can be sent 2H later than the STV1 signal. Figure 7 The same is true for the STV2 signal and the STV4 signal, which will not be described here.

[0144] Optionally, the mutually cascaded gate driving units include: a first redundant unit, a second redundant unit, and N cascaded gate driving units; wherein N is a positive integer;

[0145] The first redundant unit is cascaded with the first-stage gate driving unit among the N gate driving units, and the second redundant unit is cascaded with the second-stage gate driving unit among the N gate driving units;

[0146] The first control signal line and the second control signal line are frame start signal lines respectively, the first control signal line is electrically connected to the first redundant unit, and the second control signal line is electrically connected to the second redundant unit;

[0147] The display panel 10 further includes a plurality of clock signal lines, which are used to connect to the timing control circuit and receive clock signals sent by the timing control circuit;

[0148] The plurality of clock signal lines include a first clock signal line and a second clock signal line, the first clock signal line is electrically connected to the gate driving unit of the first stage, and the second clock signal line is electrically connected to the gate driving unit of the second stage;

[0149] Among them, the first clock signal line receives the clock signal sent by the timing control circuit at the second moment, and the time difference between the second moment and the first moment is four line scanning lengths; the second clock signal line receives the clock signal sent by the timing control circuit at the third moment, and the time difference between the third moment and the second moment is two line scanning lengths.

[0150] In some embodiments, a redundant driving unit may be provided in the gate driving circuit, for example, the gate driving circuit may include a Dummy GOA unit. The redundant driving unit is cascaded with the normal gate driving unit, and the STV signal line is electrically connected to the redundant driving unit, and then the gate driving circuit is driven by the coordination of the STV signal and the CLK signal to realize the timing driving method proposed in this embodiment.

[0151] In some embodiments, the first driving circuit and the second driving circuit respectively include mutually cascaded gate driving units, that is, the first border area and the second border area are respectively provided with mutually cascaded gate driving units. The driving circuit structures of the border areas on both sides are similar. The structure of the gate driving circuit in this embodiment is described below by taking the cascade relationship of the driving units in the border area on one side as an example. Specifically, for the border area on one side, two redundant driving units, namely the first redundant unit and the second redundant unit, are provided before the N gate driving units cascaded with each other. The first redundant unit is cascaded with the gate driving unit of the first level among the N gate driving units, and the second redundant unit is cascaded with the gate driving unit of the second level among the N gate driving units.

[0152] The output end of the first redundant unit is electrically connected to the input end of the first-stage gate driving unit, and the output end of the first-stage gate driving unit is electrically connected to the reset end of the first redundant unit. The first redundant unit and the first-stage gate driving unit are a group of driving units. In addition, the first control signal line is a frame start signal line, and the first redundant unit is electrically connected to the first control signal line and can receive the first control signal, i.e., the STV signal, so that the first redundant unit and the first-stage gate driving unit are controlled by one STV signal.

[0153] The output end of the second redundant unit is electrically connected to the input end of the second-stage gate driving unit, and the output end of the second-stage gate driving unit is electrically connected to the reset end of the second redundant unit. The second redundant unit and the second-stage gate driving unit are a group of driving units. In addition, the second control signal line is a frame start signal line, and the second redundant unit is electrically connected to the second control signal line and can receive the second control signal, i.e., the STV signal, so that the second redundant unit and the second-stage gate driving unit are controlled by one STV signal.

[0154] In some embodiments, the display panel 10 further includes a plurality of CLK signal lines, which are used to connect to the timing control circuit and can receive the CLK signal sent by the timing control circuit. In the cascaded N gate drive units, the gate drive unit of the first level is electrically connected to the first clock signal line among the plurality of CLK signal lines, and the gate drive unit of the second level is electrically connected to the second clock signal line among the plurality of CLK signal lines. Furthermore, the first redundant unit can be electrically connected to the third clock signal line among the plurality of CLK signal lines, and the second redundant unit can be electrically connected to the fourth clock signal line among the plurality of CLK signal lines.

[0155] In some embodiments, the time difference between the sending time corresponding to the STV signal received by the first redundant unit and the sending time corresponding to the STV signal received by the second redundant unit may be four row scanning durations, that is, 4H.

[0156] For example, the first redundant unit and the gate driving unit of the first level are a group of driving units, and the first clock signal line receives the CLK signal sent by the timing control circuit at the second moment, and the time difference between the second moment and the first moment is 4H. The time difference between the sending moment corresponding to the CLK signal received by the third clock signal line connected to the first redundant unit and the second moment is 4H. The second redundant unit and the gate driving unit of the second level are a group of driving units, and the second clock signal line receives the CLK signal sent by the timing control circuit at the third moment, and the time difference between the third moment and the second moment is 2H. The time difference between the sending moment corresponding to the CLK signal received by the fourth clock signal line connected to the second redundant unit and the third moment is 4H.

[0157] Figure 8 is a timing diagram of a gate drive control signal provided in an embodiment of the present application, such as Figure 8 As shown, the driving method provided in this embodiment can be realized by shifting the STV1 signal and the STV2 signal forward by 2H. Specifically, among the four STV signals STV1 to STV4, the STV1 signal and the STV3 signal are a pair of STV signals and are transmitted by a pair of STV signal lines, and the STV2 signal and the STV4 signal are a pair of STV signals and are transmitted by a pair of STV signal lines. The time difference between the rising edge of the STV1 signal and the rising edge of the STV3 is 4H, and the time difference between the rising edge of the STV2 signal and the rising edge of the STV4 signal is 4H. In addition, the time difference between the rising edge of the STV1 signal and the rising edge of the STV2 signal is 1H.

[0158] like Figure 8 As shown, the timing of 8 CLK signals is also shown. The first clock signal line may receive Figure 8 The CLK1 signal in the second clock signal line may be Figure 8The CLK3 signal shown in FIG. 1 is a clock signal of FIG. 1 . The time difference between the rising edge of the CLK1 signal and the rising edge of the CLK3 signal is 2H. In addition, the third clock signal line connected to the first redundant unit may receive Figure 8 The CLK5 signal shown in FIG. 1 may be received by the fourth clock signal line connected to the second redundant unit. Figure 8 The CLK7 signal shown in FIG. 1 , wherein the time difference between the rising edge of the CLK1 signal and the rising edge of the CLK5 signal is 4H.

[0159] In some embodiments, in the cascaded gate driving units, since the last gate driving unit does not have the output signal of the next-stage driving unit as a reset signal, a redundant driving unit can be provided after the cascaded gate driving unit to provide a reset signal for the last gate driving unit.

[0160] Fig. 9 is a schematic diagram of a gate drive circuit provided in an embodiment of the present application, such as Fig. 9 As shown, the two side frame areas of the display panel 10 are respectively provided with cascaded gate drive units, multiple STV signal lines, and multiple CLK signal lines. Taking one side frame area as an example, redundant drive units, such as Dummy GOA units, are respectively provided at the starting position and the ending position of the cascade relationship. The redundant drive units at the starting position include the first redundant unit and the second redundant unit, and the redundant drive units at the ending position can be called the third redundant unit and the fourth redundant unit.

[0161] like Fig. 9 As shown, the third redundant unit is electrically connected to the first control signal line in a pair of STV signal lines, and the third redundant unit is cascaded with the second-to-last gate drive unit. The fourth redundant unit is electrically connected to the second control signal line in the pair of STV signal lines, and the fourth redundant unit is cascaded with the first-to-last gate drive unit. The display panel 10 also includes CLK1 to CLK8 signal lines, and each CLK signal line is electrically connected to a plurality of gate drive units. Fig. 9 In the embodiment, the CLK1 signal line is electrically connected to the gate driving unit of the first level, the CLK3 signal line is electrically connected to the gate driving unit of the second level, the CLK5 signal line is electrically connected to the first redundant unit, and the CLK7 signal line is electrically connected to the second redundant unit. Fig. 9 The circuit structure and connection relationship of the second driving circuit on the right side are similar to those of the first driving circuit, and will not be described again here.

[0162] Fig.10 is a schematic diagram of the RX Noise waveform of a touch panel provided in an embodiment of the present application, such as Fig.10 As shown, the RX Noise waveforms of the two groups of receiving electrodes RX1 and RX25 are shown. Figure 5 , Fig.10 Near the rising edge and falling edge of the STV signal, the voltage value of the Touch signal of the receiving electrode RX1 is 89mV at the maximum and -9mV at the minimum, and the voltage value of the Touch signal of the receiving electrode RX25 is 72mV at the maximum and -63mV at the minimum.

[0163] Moreover, as shown in Table 2, it is shown that the Touch signal corresponding to RX1 and the Touch signal corresponding to RX25 on the touch panel provided by this embodiment have reduced noise compared to the signals in Table 1. It can be seen that by adjusting the driving timing of the STV signal transmitted by the paired STV signal lines, the coupling effects of the rising edge and the falling edge of a pair of STV signals on the noise are offset, and the signal noise of the receiving electrode RX is improved.

[0164] Table 2 Touch signal of RX electrode after improvement

[0165] RX1 4 1 -16 -67 -53 -88 -20 -19 -5 RX25 11 -4 -19 -28 -73 -40 -21 -18 10

[0166] In related technologies, such as Fig.11 As shown, TX01 is a group of transmitting electrodes closest to the border area on one side of the first driving circuit, and TX14 is a group of transmitting electrodes closest to the border area on one side of the second driving circuit. Fig.11 The Touch signal corresponding to TX01 and the Touch signal corresponding to TX14 are shown in the figure. Due to the coupling capacitance between the transmitting electrode and the CLK signal line, the signal noise generated on the two groups of transmitting electrodes TX01 and TX14 near the two side borders is more obvious. For example, in actual applications, the Touch signal of NG samples is mostly between 50-150, while the Touch signal of OK samples is below 50. Fig.12 The Touch signals corresponding to TX01 and TX14 are shown in Figure 1.

[0167] Fig.13 TX Noise waveform diagram of a touch panel in the related art, such as Fig.13 The figure shows the comparison of TX Noise waveforms of the transmitting electrodes on the two touch panels. There is a large signal noise on the transmitting electrode TX near the two side frame areas, and the TX Noise exists in the Blank area within a frame time. Among them, the amplitude of the TX Noise corresponding to the first touch panel is 500mV, and the amplitude of the TX Noise corresponding to the second touch panel is 160mV. Fig.13 In the figure, the TX Noise corresponding to the first touch panel is larger than that of the second touch panel.

[0168] like Figure 1As shown, coupling capacitance may be formed through BM between the CLK signal lines in the frame areas on both sides of the display panel 10 and the transmitting electrodes TX near the frame areas on both sides of the touch sensing layer 20. In this embodiment, by adjusting the driving timing between the CLK signals on the paired CLK signal lines, each first signal edge of the second control signal, i.e., the CLK signal, received by the second control signal line in the paired CLK signal lines is aligned with a second signal edge of the first control signal, i.e., the CLK signal, received by the first control signal line. In this way, the coupling effect of the first signal edge of the second control signal on noise in the paired CLK signal lines and the coupling effect of the second signal edge of the first control signal on noise cancel each other out.

[0169] In some embodiments, the CLK signal on the paired CLK signal line is in a level switching mode in a blank area of ​​a frame time, so that the CLK signal switches the level state between a first level and a second level. For example, the CLK setting of the CLK signal in the Blank area is changed from a VGL mode to a Toggle mode, and the Toggle mode is a level switching mode in this embodiment, and the Toggle mode means that the CLK signal continuously switches between a high level and a low level.

[0170] Fig.14 It is a timing diagram of a clock signal in the related art, such as Fig.14 As shown, the CLK of the two CLK signals in the Blank area is set to VGL mode, that is, the CLK signal maintains the VGL voltage in the Blank area. Due to the effect of the coupling capacitor between the CLK signal line and the transmitting electrode TX, when the two CLK signals enter the Blank area, the change of the CLK signal will couple the corresponding trend of noise on the signal of the transmitting electrode TX.

[0171] The timing relationship of the clock signal in this embodiment is as follows: Figure 3 As shown, for the CLK signal transmitted on the paired CLK signal lines, since the CLK of the CLK signal in the Blank area is set to the level switching mode, and the time difference between the corresponding sending moments of a pair of CLK signals is half a clock cycle, the rising edge and falling edge of a pair of CLK signals in the Blank area of ​​a frame time can cancel each other out in terms of noise pulling. Therefore, the signal noise of the transmitting electrode TX caused by the CLK signal transmitted on the pair of CLK signal lines in the Blank area can be reduced. Figure 3 As shown, compared to Fig.14 In the Touch signal shown in the figure, the noise corresponding to the Blank area of ​​the CLK signal is improved.

[0172] Fig.15 : is a waveform diagram of TX Noise of a touch panel in the related art, such as Fig.15As shown, the CLK signal waveform of the Blank area using the VGL mode, the STV signal waveform corresponding to the CLK signal, and the Touch signal waveform on the transmitting electrode TX near the border area are shown. Fig.15 In the figure, the Blank area of ​​the CLK signal on the Touch signal generates large noise due to the coupling capacitor, and the noise amplitude is 770mV.

[0173] Fig.16 is a waveform diagram of TX Noise of the touch panel provided in the embodiment of the present application, such as Fig.16 As shown, the CLK signal waveform of the Blank area using the level exchange mode, the STV signal waveform corresponding to the CLK signal, and the Touch signal waveform on the transmitting electrode TX near the border area are shown. Fig.16 In the example, the signal noise amplitude in the Blank region of the CLK signal on the Touch signal is reduced to 330mV.

[0174] In some embodiments, for Fig. 9 In the gate drive circuit shown in the figure, the CLK signal transmitted by the CLK signal line in the Blank area can also be set to a level switching mode, such as a Toggle mode. Fig. 9 In the case where a coupling capacitor exists between the CLK signal line and the transmitting electrode TX of the touch sensing layer 20 in the gate driving circuit shown, the noise pulling effects of the paired CLK signal rising and falling edges offset each other, thereby reducing the Touch signal noise corresponding to the Blank area of ​​the CLK signal.

[0175] like Fig.17 As shown, the coupling capacitance ΔC between the GOA signal line and the touch sensing layer 20 can be obtained by the following formula (1):

[0176] ΔC=C1×C2 / (C1+C2+2π×f×C1×C2×R) (1)

[0177] Wherein, capacitor C1 represents the coupling capacitance between the GOA signal line and BM, capacitor C2 represents the coupling capacitance between BM and the touch sensing layer 20, resistor R is the BM resistance, and f is the frequency of the GOA control signal. From formula (1), it can be seen that the coupling capacitance ΔC is inversely proportional to the resistance value of the BM resistor R. When the resistance value decreases, the coupling effect between the GOA signal line and the touch sensing layer 20 increases, which will cause the signal noise to increase and TPNoise to appear more easily. In the related art, the resistance value of the BM resistor R of the OK sample is much greater than the resistance value of the BM resistor R of the NG sample. For example, the resistance value of the BM resistor R of the OK sample is 6 megohms (MΩ), while the resistance value of the BM resistor R of the NG sample is 0.08MΩ.

[0178] Optionally, the display panel 10 includes a first display substrate 101 and a second display substrate 102; the gate driving circuit and a plurality of control signal lines are arranged in the first display substrate 101, and the touch sensing layer 20 is arranged on a side of the second display substrate 102 away from the first display substrate 101;

[0179] The display panel 10 further includes: a light shielding layer 103 disposed on a side of the second display substrate 102 close to the first display substrate 101; the light shielding layer 103 includes a first groove 1031;

[0180] The orthographic projection of the first groove 1031 on the first surface is the first orthographic projection, the orthographic projection of the control signal line on the first surface is the second orthographic projection, and the orthographic projection of the touch sensing layer 20 on the first surface is the third orthographic projection; the first surface is the surface of the second display substrate 102 close to the first display substrate 101;

[0181] The second orthographic projection and the third orthographic projection do not overlap each other; the first orthographic projection is located between the second orthographic projection and the third orthographic projection, so that the first groove 1031 disconnects the coupling capacitance between the control signal line and the touch sensing layer 20 .

[0182] In some embodiments, the first display substrate 101 may be an array substrate, in which the gate drive circuit and a plurality of control signal lines are disposed. The second display substrate 102 may be a CF substrate, in which the touch sensing layer 20 is disposed on a side of the CF substrate away from the first display substrate 101. The second display substrate 102 further includes a light shielding layer 103 on a side close to the first display substrate 101. The light shielding layer 103 may be, for example, Figure 1 The BM shown here is only an example, and the embodiments of the present application do not limit this.

[0183] In some embodiments, a first groove 1031 is provided on a side of the light shielding layer 103 close to the control signal line, so that the side of the light shielding layer 103 close to the control signal line is isolated, thereby preventing the control signal line from forming a coupling capacitor with the touch sensing layer 20 through the light shielding layer 103, thereby isolating the gate drive control signal from the touch sensing signal, reducing the Touch signal noise, and improving the touch effect of the touch panel.

[0184] Specifically, the plurality of control signal lines of the first display substrate 101 are located in the frame area outside the display area, and the touch sensing layer 20 can cover the display area, and there is no overlap between the second orthographic projection of the control signal line on the first surface and the third orthographic projection of the touch sensing layer 20 on the first surface. That is, the control signal line and the touch sensing layer 20 do not directly form a coupling capacitor, but rather a coupling capacitor is formed between the control signal line and the touch sensing layer 20. Figure 1 As shown, a coupling capacitor is formed between the GOA signal line and the touch sensing layer 20 via BM.

[0185] In some embodiments, the coupling capacitance between the control signal line and the touch sensing layer 20 is disconnected by setting the first groove 1031 between the control signal line and the touch sensing layer 20. The first orthographic projection of the first groove 1031 of the light shielding layer 103 on the first surface is located between the second orthographic projection and the third orthographic projection, so that the first groove 1031 isolates the side of the light shielding layer 103 close to the control signal line, so that the control signal line cannot form a coupling capacitance with the touch sensing layer 20 through the light shielding layer 103.

[0186] Optionally, the plurality of control signal lines include a frame start signal line; the touch sensing layer 20 includes a first electrode;

[0187] The orthographic projection of the first electrode on the first surface is a first sub-projection, and the third orthographic projection includes the first sub-projection;

[0188] The second orthographic projection corresponding to the frame start signal line does not overlap with the first sub-projection; the first orthographic projection is located between the first sub-projection and the second orthographic projection corresponding to the frame start signal line, so that the first groove 1031 disconnects the coupling capacitance between the frame start signal line and the first electrode.

[0189] In some embodiments, the first electrode may be a receiving electrode RX, and the touch sensing layer 20 may include a plurality of receiving electrodes RX. Figure 1 As shown, the GOA signal line is the STV signal line, and the receiving electrode RX near the frame area on the touch sensing layer 20 is easy to form a coupling capacitor with the STV signal line. In this embodiment, the first groove 1031 of the light shielding layer 103 is provided between the STV signal line and the receiving electrode RX, so that the first groove 1031 disconnects the coupling capacitor between the STV signal line and the receiving electrode RX.

[0190] Specifically, the touch sensing layer 20 may include a plurality of receiving electrodes RX on one side close to the STV signal line, and the second orthographic projection of the STV signal line on the first surface does not overlap with the first sub-projections of the plurality of receiving electrodes RX on the first surface. The coupling capacitance between the STV signal line and the receiving electrode RX of the touch sensing layer 20 is disconnected by setting the first groove 1031 between the STV signal line and the receiving electrode RX of the touch sensing layer 20. The first orthographic projection of the first groove 1031 of the light shielding layer 103 on the first surface is located between the first sub-projection corresponding to the receiving electrode RX and the second orthographic projection corresponding to the STV signal line.

[0191] In this way, the first groove 1031 isolates the side of the light shielding layer 103 close to the STV signal line, so that the STV signal line cannot form a coupling capacitor with the receiving electrode RX of the touch sensing layer 20 through the light shielding layer 103. Thus, the STV signal is isolated from the signal of the receiving electrode RX, and the RX Noise generated by the signal conversion of the STV signal coupled to the signal of the receiving electrode RX can be avoided.

[0192] Optionally, the plurality of control signal lines include a clock signal line; the touch sensing layer 20 includes a second electrode;

[0193] The orthographic projection of the second electrode on the first surface is a second sub-projection, and the second orthographic projection includes the second sub-projection;

[0194] The first orthographic projection corresponding to the clock signal line does not overlap with the second sub-projection; the first orthographic projection is located between the second sub-projection and the second orthographic projection corresponding to the clock signal line, so that the first groove 1031 disconnects the coupling capacitance between the clock signal line and the second electrode.

[0195] In some embodiments, the second electrode may be a transmitting electrode TX, and the touch sensing layer 20 may include a plurality of transmitting electrodes TX. Figure 1 As shown, the GOA signal line is the CLK signal line, and the transmitting electrode TX near the frame area on the touch sensing layer 20 is easy to form a coupling capacitor with the CLK signal line. In this embodiment, by setting the first groove 1031 of the light shielding layer 103 between the CLK signal line and the transmitting electrode TX, the first groove 1031 disconnects the coupling capacitor between the CLK signal line and the transmitting electrode TX.

[0196] Specifically, the touch sensing layer 20 may include a plurality of transmitting electrodes TX on one side close to the CLK signal line, and the second orthographic projection of the CLK signal line on the first surface does not overlap with the second sub-projections of the plurality of transmitting electrodes TX on the first surface. The coupling capacitance between the CLK signal line and the transmitting electrode TX of the touch sensing layer 20 is disconnected by setting the first groove 1031 between the CLK signal line and the transmitting electrode TX of the touch sensing layer 20. The first orthographic projection of the first groove 1031 of the light shielding layer 103 on the first surface is located between the second sub-projection corresponding to the transmitting electrode TX and the second orthographic projection corresponding to the CLK signal line.

[0197] In this way, the first groove 1031 isolates the side of the light shielding layer 103 close to the CLK signal line, so that the CLK signal line cannot form a coupling capacitor with the transmitting electrode TX of the touch sensing layer 20 through the light shielding layer 103. Thus, the CLK signal is isolated from the signal of the transmitting electrode TX, and the TX Noise generated by the signal conversion of the CLK signal coupled to the signal of the transmitting electrode TX can be avoided.

[0198] Optionally, the first display substrate 101 includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area;

[0199] The control signal line is arranged in the first frame area, and the light shielding layer 103 includes at least one first groove 1031 on a side close to the first frame area;

[0200] and / or,

[0201] The control signal line is disposed in the second frame region, and a side of the light shielding layer 103 close to the second frame region includes at least one first groove 1031 .

[0202] In some embodiments, the gate drive circuit can be arranged in a side frame area outside the display area, and the plurality of control signal lines can be arranged in the side frame area where the gate drive circuit is located. Alternatively, the gate drive circuit can be arranged in two side frame areas outside the display area, namely, the first frame area and the second frame area, and the control signal lines can be arranged in the first frame area and the second frame area, respectively.

[0203] In some embodiments, when the first border area is provided with a control signal line, at least one first groove 1031 needs to be provided on the side of the light shielding layer 103 close to the first border area, so that the first groove 1031 disconnects the coupling capacitor between the control signal line and the touch sensing layer 20. The second border area is also the same, which will not be described here. In addition, when both the first border area and the second border area are provided with a control signal line, at least one first groove 1031 can be provided in the first border area and the second border area respectively.

[0204] In this way, the side of the touch sensing layer 20 close to the frame area can be prevented from forming a coupling capacitor with the control signal line in the frame area through the shading layer 103, the gate drive control signal can be isolated from the touch sensing signal, and the signal noise of the touch sensing can be reduced. Therefore, the touch effect of the touch panel can be improved.

[0205] Optionally, the side of the light shielding layer 103 close to the first frame area includes two first grooves 1031, and the first orthographic projections corresponding to the two first grooves 1031 do not overlap;

[0206] and / or,

[0207] A side of the light shielding layer 103 close to the second frame region includes two first grooves 1031 , and the first orthographic projections corresponding to the two first grooves 1031 do not overlap.

[0208] In some embodiments, the two first grooves 1031 are not connected to each other. The side of the light shielding layer 103 close to the first frame area includes two first grooves 1031, and the first orthographic projection corresponding to the first first groove 1031 does not overlap with the first orthographic projection corresponding to the second first groove 1031. The side of the light shielding layer 103 close to the second frame area includes two first grooves 1031, and the first orthographic projection corresponding to the first first groove 1031 does not overlap with the first orthographic projection corresponding to the second first groove 1031.

[0209] Fig.18 1 is a cross-sectional view of the first groove 1031 provided in an embodiment of the present application, showing a cross-sectional view of the light shielding layer 103, i.e., BM, near the GOA signal line in a direction perpendicular to the first surface. The rectangle at the BM disconnection represents the cross-sectional view of the first groove 1031. Fig.18 Two first grooves 1031 are provided near one side frame of the middle BM. The two first grooves 1031 are located between the GOA signal line and the touch sensing layer 20, and the two first grooves 1031 are not connected to each other. Fig.18 As shown, the GOA signal line forms a capacitor C1 with the BM, and the BM forms a capacitor C2 with the touch sensing layer 20. However, due to the existence of the two first grooves 1031, the capacitor C1 is disconnected from the capacitor C2, so the GOA signal line cannot form a coupling capacitor with the touch sensing layer 20 through the BM.

[0210] Optionally, the first orthographic projection overlaps with at most one of the second orthographic projection and the third orthographic projection.

[0211] In some embodiments, the first orthographic projection of the first groove 1031 of the light shielding layer 103 on the first surface is located between the second orthographic projection and the third orthographic projection, and the first orthographic projection may not overlap with the second orthographic projection and the third orthographic projection, or the first orthographic projection may overlap with only one of the second orthographic projection and the third orthographic projection. In this way, the problem of the light shielding layer 103 losing the light shielding effect due to unreasonable size setting of the first groove 1031 can be avoided.

[0212] In some embodiments, for the first border area, the first orthographic projection corresponding to the first first groove 1031 overlaps with the second orthographic projection, and / or, the first orthographic projection corresponding to the second first groove 1031 overlaps with the third orthographic projection. For the second border area, the first orthographic projection corresponding to the first first groove 1031 overlaps with the second orthographic projection, and / or, the first orthographic projection corresponding to the second first groove 1031 overlaps with the third orthographic projection.

[0213] like Fig.18In the two first grooves 1031 shown, a first orthographic projection corresponding to one first groove 1031 overlaps with a second orthographic projection corresponding to the GOA signal line, and a first orthographic projection corresponding to the other first groove 1031 overlaps with a third orthographic projection corresponding to the touch sensing layer 20 .

[0214] Optionally, the shape of the first orthographic projection is a rectangle; the length of the first edge of the first orthographic projection is a first length;

[0215] The orthographic projection of the light shielding layer 103 on the first surface and the second orthographic projection have an overlapping area, and the length of the second edge of the overlapping area is the second length;

[0216] The first length is not less than the second length.

[0217] In some embodiments, the shading layer 103 covers the control signal line in the outer frame area of ​​the display area, and the orthographic projection of the shading layer 103 on the first surface has an overlapping area with the second orthographic projection corresponding to the control signal line, and the length of the second edge of the overlapping area is approximately equal to the length of the frame area, for example, the length of the second edge is approximately equal to the length of the long side of the frame area.

[0218] In some embodiments, the length of the first groove 1031 can be approximately equal to the length of the long side of the frame area, so that the first groove 1031 breaks the side of the light shielding layer 103 close to the frame area into several parts, i.e., islands, so that the control signal line of the frame area cannot form a coupling capacitor with the touch sensing layer 20 through the light shielding layer 103. Specifically, the shape of the first orthographic projection corresponding to the first groove 1031 is a rectangle, for example, the projection shape can be a long rectangular strip. The first edge of the first orthographic projection can be a long side, and the second edge of the overlapping area can also be a long side. In addition, the first length is not less than the second length, so that the first groove 1031 can disconnect the coupling capacitor between the control signal line and the touch sensing layer 20.

[0219] by Figure 4 Taking the touch panel shown in FIG. 1 as an example, the light shielding layer 103 may be provided with a first groove 1031 near the upper and lower frame regions, such as Fig.19 Alternatively, the light shielding layer 103 is provided with two first grooves 1031 near the upper and lower side frames, as shown in FIG. Fig. 20 As shown. The plane projection shape of the first groove 1031 is a long rectangular strip. In practical applications, a single groove or a double groove can be dug for the BM. Fig.19 As shown, a single groove is dug on the side of the BM close to the GOA signal line to obtain a first groove 1031, and the first groove 1031 is located between the GOA signal line and the touch sensing layer 20. Or, as Fig. 20As shown, a double groove is dug on the side of the BM close to the GOA signal line to obtain two first grooves 1031, one first groove 1031 is located between the GOA signal line and the touch sensing layer 20, and the other first groove 1031 can be located above the array (Array) common electrode (VCOM) metal trace of the first display substrate 101.

[0220] Optionally, the non-display area further includes a third frame area and a fourth frame area arranged on opposite sides of the display area; the third frame area is adjacent to the first frame area and the second frame area respectively;

[0221] A side of the light shielding layer 103 close to the third frame region includes at least one second groove 1032 , and a side of the light shielding layer 103 close to the fourth frame region includes at least one second groove 1032 ;

[0222] A second groove 1032 in the third frame area is respectively connected to a first groove 1031 in the first frame area and a first groove 1031 in the second frame area;

[0223] A second groove 1032 in the fourth frame area is connected to a first groove 1031 in the first frame area and a first groove 1031 in the second frame area respectively;

[0224] The first groove 1031 and the second groove 1032 communicate with each other to form an annular groove.

[0225] In some embodiments, in the case where control signal lines are provided on both side frame regions, the side of the light shielding layer 103 close to the first frame region includes at least one first groove 1031, and the side of the light shielding layer 103 close to the second frame region includes at least one first groove 1031. In this case, an annular groove may be provided on the light shielding layer 103, and the annular groove includes a first groove 1031 close to both side frame regions, and a second groove 1032 close to the third frame region and the fourth frame region, respectively.

[0226] like Fig.21 As shown, the light shielding layer 103 includes an annular groove, compared to Fig.19 Single grooves are dug in the border areas on both sides as shown. Fig.21 The middle annular groove also includes two second grooves 1032 at the short sides of the light shielding layer 103. The second grooves 1032 are located in a region of the light shielding layer 103 away from the touch sensing layer 20, that is, the fourth orthographic projection of the second grooves 1032 on the first surface does not overlap with the third orthographic projection corresponding to the touch sensing layer 20. Fig.21 As shown, the shape of the plane projection of the annular groove is an annular rectangle, that is, the shape of the orthographic projection of the annular groove on the first surface is an annular rectangle.

[0227] like Fig. 22As shown, the light shielding layer 103 includes two annular grooves. Fig. 20 Double grooves are dug in the border areas on both sides as shown. Fig. 22 Each annular groove includes two second grooves 1032 at the short side of the light shielding layer 103 .

[0228] An embodiment of the present application further provides a display device, which includes a touch panel as described in the above embodiment.

[0229] The embodiment of the present application further provides a display driving method for driving the touch panel as in the above embodiment, the display driving method comprising:

[0230] Sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, so that each first signal edge of the second control signal is aligned with a second signal edge of the first control signal within a frame time;

[0231] Among them, the first control signal and the second control signal are gate drive control signals of the same type; the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when it receives the second signal edge; the first signal edge represents that the signal jumps from the first level to the second level, and the second signal edge represents that the signal jumps from the second level to the first level.

[0232] In some embodiments, the execution subject of the display driving method may be a timing control circuit. For example, in the above embodiment, the timing control circuits of the mobile phone and TPC may be DDIC, such as the GOA module of DDIC, which may provide a GOA control signal. For medium and large-sized display devices such as NB, the gate drive control signal is provided by TCON and LS chip together.

[0233] Optionally, sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, comprises:

[0234] Sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, so that a first signal edge of the second control signal is aligned with a second signal edge of the first control signal;

[0235] The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge; different pairs of frame start signal lines correspond to different first moments.

[0236] In some embodiments, different pairs of frame start signal lines correspond to different first moments. For example, the plurality of control signal lines include two pairs of frame start signal lines, the first moments corresponding to the two pairs of frame start signal lines are respectively a first sub-moment and a second sub-moment, the first moment includes the first sub-moment and the second sub-moment, and the time difference between the first sub-moment and the second sub-moment is 1H.

[0237] Optionally, sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, comprises:

[0238] Sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, so that each first signal edge of the second control signal is aligned with a second signal edge of the first control signal;

[0239] Among them, the first control signal and the second control signal are clock signals respectively. The clock signal is in a level switching mode in the blank area of ​​a frame time. The level switching mode represents that the clock signal switches the level state between the first level and the second level; different pairs of clock signal lines correspond to different first moments.

[0240] In some embodiments, different pairs of clock signal lines correspond to different first moments. Figure 8 The time difference between any two of the 8 CLK signals shown is 1H.

[0241] The specific implementation of the display driving method of this embodiment can refer to the relevant description of the timing driving method of the touch panel in the above-mentioned embodiment, which will not be repeated here.

[0242] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0243] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0244] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0245] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0246] The above is a detailed introduction to a touch panel, a display device and a display driving method provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope.

[0247] In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A touch panel, characterized in that: The touch panel comprises: a display panel, and a touch sensing layer arranged on the light-emitting side of the display panel, the display panel comprises a gate drive circuit and a plurality of control signal lines; the control signal lines are electrically connected to the gate drive circuit, and the control signal lines are also used to connect to the timing control circuit of the touch panel; The plurality of control signal lines include a first control signal line and a second control signal line, the first control signal line is used to receive a first control signal sent by the timing control circuit at a first moment, and the second control signal line is used to receive a second control signal sent by the timing control circuit after a delay based on the first moment; the first control signal and the second control signal are gate drive control signals of the same type; Wherein, the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when the second signal edge is received; within one frame time, each first signal edge of the second control signal is aligned with a second signal edge of the first control signal; the first signal edge represents a signal jump from a first level to a second level, and the second signal edge represents a signal jump from the second level to the first level.

2. The touch panel according to claim 1, characterized in that: The first control signal line and the second control signal line are frame start signal lines respectively; The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge; The first signal edge of the second control signal received by the second control signal line is aligned with the second signal edge of the first control signal received by the first control signal line.

3. The touch panel according to claim 1, characterized in that: The first control signal line and the second control signal line are clock signal lines respectively; The first control signal and the second control signal are clock signals respectively, and the clock signal is in a level switching mode in a blank area of ​​the one-frame picture time, and the level switching mode indicates that the clock signal switches the level state between the first level and the second level; Each first signal edge of the clock signal received by the second control signal line is aligned with one second signal edge of the clock signal received by the first control signal line.

4. The touch panel according to claim 1, characterized in that: The display panel includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area; The gate driving circuit comprises a first driving circuit and a second driving circuit; the first driving circuit is arranged in the first border area, and the second driving circuit is arranged in the second border area; the first driving circuit and the second driving circuit respectively comprise gate driving units cascaded to each other; The multiple control signal lines include a pair of the first control signal line and the second control signal line; the first drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line, and the second drive circuit is electrically connected to at least one pair of the first control signal line and the second control signal line.

5. The touch panel according to claim 4, characterized in that: The plurality of control signal lines include two pairs of the first control signal line and the second control signal line, the first control signal line and the second control signal line are frame start signal lines respectively; The first pair of the frame start signal lines is arranged in the first border area; in the first pair of the frame start signal lines, the first control signal line is electrically connected to at least one of the gate drive units in the first drive circuit, and the second control signal line is electrically connected to at least one of the gate drive units in the first drive circuit; wherein, in the first pair of the frame start signal lines, the first control signal line receives the first control signal sent by the timing control circuit at the first sub-moment; The second pair of frame start signal lines is arranged in the second border area; in the second pair of frame start signal lines, the first control signal line is electrically connected to at least one gate drive unit in the second drive circuit, and the second control signal line is electrically connected to at least one gate drive unit in the second drive circuit; wherein, in the second pair of frame start signal lines, the first control signal line receives the first control signal sent by the timing control circuit at the second sub-moment; the first moment includes the first sub-moment and the second sub-moment; the time difference between the first sub-moment and the second sub-moment is a row scan duration.

6. The touch panel according to claim 4, characterized in that: The gate driving units cascaded to each other include: a first redundant unit, a second redundant unit, and N cascaded gate driving units; wherein N is a positive integer; The first redundant unit is cascaded with the gate driving unit of the first stage among the N gate driving units, and the second redundant unit is cascaded with the gate driving unit of the second stage among the N gate driving units; The first control signal line and the second control signal line are frame start signal lines respectively, the first control signal line is electrically connected to the first redundant unit, and the second control signal line is electrically connected to the second redundant unit; The display panel further comprises a plurality of clock signal lines, wherein the clock signal lines are used to connect to the timing control circuit and receive clock signals sent by the timing control circuit; The plurality of clock signal lines include a first clock signal line and a second clock signal line, the first clock signal line is electrically connected to the gate driving unit of the first stage, and the second clock signal line is electrically connected to the gate driving unit of the second stage; Among them, the first clock signal line receives the clock signal sent by the timing control circuit at the second moment, and the time difference between the second moment and the first moment is four line scanning durations; the second clock signal line receives the clock signal sent by the timing control circuit at the third moment, and the time difference between the third moment and the second moment is two line scanning durations.

7. The touch panel according to any one of claims 1 to 6, characterized in that: The display panel includes a first display substrate and a second display substrate; the gate driving circuit and the plurality of control signal lines are arranged in the first display substrate, and the touch sensing layer is arranged on a side of the second display substrate away from the first display substrate; The display panel further comprises: a light shielding layer disposed on a side of the second display substrate close to the first display substrate; the light shielding layer comprises a first groove; The orthographic projection of the first groove on the first surface is the first orthographic projection, the orthographic projection of the control signal line on the first surface is the second orthographic projection, and the orthographic projection of the touch sensing layer on the first surface is the third orthographic projection; the first surface is the surface of the second display substrate close to the first display substrate; The second orthographic projection and the third orthographic projection do not overlap each other; the first orthographic projection is located between the second orthographic projection and the third orthographic projection, so that the first groove disconnects the coupling capacitance between the control signal line and the touch sensing layer.

8. The touch panel according to claim 7, characterized in that: The plurality of control signal lines include a frame start signal line; the touch sensing layer includes a first electrode; The orthographic projection of the first electrode on the first surface is a first sub-projection, and the third orthographic projection includes the first sub-projection; The second orthographic projection corresponding to the frame start signal line does not overlap with the first sub-projection; the first orthographic projection is located between the first sub-projection and the second orthographic projection corresponding to the frame start signal line, so that the first groove disconnects the coupling capacitance between the frame start signal line and the first electrode.

9. The touch panel according to claim 7, characterized in that: The plurality of control signal lines include a clock signal line; the touch sensing layer includes a second electrode; The orthographic projection of the second electrode on the first surface is a second sub-projection, and the second orthographic projection includes the second sub-projection; The first orthographic projection and the second sub-projection corresponding to the clock signal line do not overlap; The first orthographic projection is located between the second sub-projection and the second orthographic projection corresponding to the clock signal line, so that the first groove disconnects the coupling capacitance between the clock signal line and the second electrode.

10. The touch panel according to claim 7, characterized in that: The first orthographic projection overlaps with at most one of the second orthographic projection and the third orthographic projection.

11. The touch panel according to claim 7, characterized in that: The shape of the first orthographic projection is a rectangle; the length of the first edge of the first orthographic projection is a first length; The orthographic projection of the light shielding layer on the first surface and the second orthographic projection have an overlapping area, and the length of the second edge of the overlapping area is a second length; The first length is not less than the second length.

12. The touch panel according to claim 7, characterized in that: The first display substrate includes a display area and a non-display area outside the display area; the non-display area includes a first frame area and a second frame area arranged on opposite sides of the display area; The control signal line is arranged in the first frame area, and the light shielding layer includes at least one first groove on a side close to the first frame area; and / or, The control signal line is arranged in the second frame area, and the side of the light shielding layer close to the second frame area includes at least one first groove.

13. The touch panel according to claim 12, characterized in that: The side of the light shielding layer close to the first frame area includes two first grooves, and the first orthographic projections corresponding to the two first grooves do not overlap; and / or, A side of the light shielding layer close to the second frame area includes two first grooves, and the first orthographic projections corresponding to the two first grooves do not overlap.

14. The touch panel according to claim 12, characterized in that: The non-display area further includes a third frame area and a fourth frame area arranged on opposite sides of the display area; the third frame area is adjacent to the first frame area and the second frame area respectively; The side of the light shielding layer close to the third frame area includes at least one second groove, and the side of the light shielding layer close to the fourth frame area includes at least one second groove; One of the second grooves in the third frame area is connected to one of the first grooves in the first frame area and one of the first grooves in the second frame area respectively; One of the second grooves in the fourth frame area is respectively connected with one of the first grooves in the first frame area and one of the first grooves in the second frame area; The first groove and the second groove communicated with each other form an annular groove.

15. The touch panel according to claim 14, characterized in that: The orthographic projection of the second groove on the first surface is a fourth orthographic projection, and the fourth orthographic projection does not overlap with the third orthographic projection.

16. The touch panel according to claim 14, characterized in that: The shape of the orthographic projection of the annular groove on the first surface is an annular rectangle.

17. A display device, characterized in that: The display device comprises the touch panel as described in any one of claims 1-16.

18. A display driving method, characterized in that: Used to drive the touch panel according to any one of claims 1 to 16, the display driving method comprising: Sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, so that each first signal edge of the second control signal is aligned with a second signal edge of the first control signal within a frame time; Wherein, the gate drive control signal includes a first signal edge and a second signal edge, and the time when the control signal line receives the first signal edge is earlier than the time when the second signal edge is received; the first control signal and the second control signal are the same type of gate drive control signals; the first signal edge represents that the signal jumps from a first level to a second level, and the second signal edge represents that the signal jumps from the second level to the first level.

19. The display driving method according to claim 18, characterized in that: The step of sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, comprises: Sending a first control signal to the first control signal line at the first time, and sending a second control signal to the second control signal line after a delay based on the first time, so that a first signal edge of the second control signal is aligned with a second signal edge of the first control signal; The first control signal and the second control signal are frame start signals respectively, and the frame start signal includes a first signal edge and a second signal edge; different pairs of frame start signal lines correspond to different first moments.

20. The display driving method according to claim 18, characterized in that: The step of sending a first control signal to a first control signal line at a first moment, and sending a second control signal to a second control signal line after a delay based on the first moment, comprises: Sending a first control signal to the first control signal line at the first time, and sending a second control signal to the second control signal line after a delay based on the first time, so that each first signal edge of the second control signal is aligned with one second signal edge of the first control signal; Among them, the first control signal and the second control signal are clock signals respectively, and the clock signal is in a level switching mode in the blank area of ​​the one-frame picture time, and the level switching mode represents that the clock signal switches the level state between the first level and the second level; different pairs of clock signal lines correspond to different first moments.

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