CN115047991A

CN115047991A - Touch display panel and display device

Info

Publication number: CN115047991A
Application number: CN202210773004.8A
Authority: CN
Inventors: 孙莹; 冯小国; 黄婉铭; 杨金金
Original assignee: Xiamen Tianma Display Technology Co Ltd
Current assignee: Xiamen Tianma Display Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-13

Abstract

The invention discloses a touch display panel and a display device, which comprise a substrate, a pixel circuit layer and a touch functional layer; at least part of the pixel circuits in the same column are electrically connected with the same data signal line; the touch function layer comprises a plurality of touch electrodes; one data refreshing period of the touch display panel comprises continuous data writing frames and continuous data maintaining frames; when data is written into a frame, the data signal lines transmit data voltages of the pixel circuits electrically connected with the data signal lines in a time-sharing manner; when the data refreshing mode of the touch display panel is a first mode, the holding frame comprises a first stage, a second stage and a third stage which are continuous; in the second stage, signals transmitted by all the data signal lines are preset voltages; at the initial moment of the first stage, at least part of signals transmitted by the data signal lines are not jumped to preset voltage; and/or at the starting time of the third phase, at least part of signals transmitted by the data signal lines do not jump to the data voltage.

Description

Touch display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a touch display panel and a display device.

Background

In the touch display panel, the pixel circuit layer and the touch layer are usually stacked and insulated in sequence on the substrate, and therefore, in order not to affect the light emission of the light emitting element, the touch electrode in the touch layer is usually a transparent conductive structure, and the data signal line in the pixel circuit is made of a metal material, so that a parasitic capacitance is formed between the data signal line in the pixel circuit and the touch electrode.

After the data writing stage is finished, in order to balance the electric potential of each data signal line, the electric potential of each data signal line is jumped to a preset voltage, so that the electric potential of a data voltage writing node of each pixel circuit connected with each data signal line is kept consistent, the display panel can realize uniform display after the data voltage is written in the next data writing frame, and meanwhile, the problem of low-frequency flicker can be effectively reduced.

However, when the potential of each data signal line is changed to the preset voltage, the voltages of all the data signal lines are changed at the same time, so that the parasitic capacitance formed between the data signal lines and the touch electrode is large, the influence on the signal of the touch electrode is large, and the touch performance is influenced.

Disclosure of Invention

The invention provides a touch display panel and a display device, which can improve the display uniformity of the display panel and ensure the touch accuracy of the touch display panel.

According to an aspect of the present invention, there is provided a touch display panel including: the touch control panel comprises a substrate, a pixel circuit layer and a touch control functional layer, wherein the pixel circuit layer and the touch control functional layer are positioned on one side of the substrate in a stacked mode;

the pixel circuit layer comprises a plurality of data signal lines and a plurality of pixel circuits arranged in an array; at least part of the pixel circuits in the same column are electrically connected with the same data signal line; the touch function layer comprises a plurality of touch electrodes;

one data refreshing period of the touch display panel comprises continuous data writing frames and continuous data maintaining frames; when the data is written into a frame, the data signal line transmits the data voltage of each pixel circuit electrically connected with the data signal line in a time-sharing manner;

when the data refreshing mode of the touch display panel is a first mode, the holding frame comprises a first stage, a second stage and a third stage which are continuous; the first stage is positioned between the second stage and a data writing frame of the current data refreshing period, and the third stage is positioned between the second stage and a data writing frame of the next data refreshing period; in the second stage, all signals transmitted by the data signal lines are preset voltages;

at the initial moment of the first stage, at least part of signals transmitted by the data signal line do not jump to the preset voltage; and/or at the starting time of the third phase, at least part of signals transmitted by the data signal line do not jump to the data voltage.

According to another aspect of the present invention, a display device is provided, which includes the touch display panel.

In the touch display panel provided by the embodiment of the invention, in at least part of the retention frames in which the data refresh mode is the first mode, the signals transmitted by the data signal lines are kept at the preset voltage, so that the electric quantity received by each pixel circuit electrically connected with each data signal line is kept consistent, and the condition that the data voltage is written into each pixel circuit is kept consistent when the next data is written into the frame, so that the display uniformity of the touch display panel is improved, and the problem of low-frequency flicker can be effectively reduced; meanwhile, the hold frame is divided into a first stage, a second stage and a third stage, at the initial time of the first stage, at least part of signals of the data lines are not jumped to preset voltage, and/or at the initial time of the third stage, at least part of signals transmitted by the data lines are not jumped to data voltage, so that the signals transmitted by the data signal lines are prevented from jumping instantaneously at the same time to couple to a larger electric charge quantity of the touch electrode, and the touch signals in the touch electrode, and therefore the touch signal interference quantity of the signals transmitted by the data signal lines to the touch electrode can be effectively reduced, and the display uniformity of the touch display panel can be improved while the touch accuracy and the sensitivity of the touch display panel are ensured.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a touch display panel in the prior art;

FIG. 2 is a timing diagram illustrating operation of a touch display panel according to the prior art;

fig. 3 is a schematic top view of a touch display panel according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along section B-B of FIG. 3;

fig. 5 is a timing diagram illustrating an operation of a touch display panel according to an embodiment of the invention;

fig. 6 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention;

fig. 7 is a driving timing diagram of another pixel circuit according to an embodiment of the invention;

FIG. 8 is a timing diagram illustrating an operation of another touch display panel according to an embodiment of the present invention;

FIG. 9 is a timing diagram illustrating operation of another touch display panel according to an embodiment of the present invention;

FIG. 10 is a timing diagram illustrating an operation of another touch display panel according to an embodiment of the present invention;

FIG. 11 is a timing diagram illustrating operation of another touch display panel according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of a touch display panel in the prior art, as shown in fig. 1, a touch display panel 00' includes a substrate 10', a pixel circuit layer 20' and a touch layer 30', the pixel circuit layer 20' is located on one side of the substrate 10', the touch layer 30' is located on one side of the pixel circuit layer 20' away from the substrate 10', an insulating layer 40' is disposed between the pixel circuit layer 20' and the touch layer 30', a data signal line 21' for transmitting a data voltage is disposed in the pixel circuit layer 20', the touch layer 30' includes a touch electrode 31', for a mutual capacitive touch display panel 00', the touch electrode 31' generally includes a touch driving electrode 311' and a touch sensing electrode 312', the touch driving electrode 311' and the touch sensing electrode 312' may be disposed on the same layer or on different layers, and by providing a touch driving signal to the touch driving electrode 311', receiving a touch sensing signal fed back by the touch sensing electrode 312', so that touch detection can be realized; for the self-contained touch display panel 00', the touch electrode 31' will feed back the touch sensing signal while receiving the touch driving signal, and the touch detection can be realized as well.

Taking the mutually capacitive touch display panel 00' as an example, the driving cycle of the touch display panel 00' generally includes a display stage and a touch stage, in the display stage, the data signal is provided in time division according to the row pixel circuit through the data signal line 21', in the touch stage, the touch driving electrode 311' receives the touch driving signal, and the touch sensing electrode 312' receives the touch sensing signal, so that the touch position can be determined according to the touch sensing signal and the touch driving signal. Since the touch electrode 31 'of the touch layer 30' overlaps the data signal line 21 'in the thickness direction of the touch display panel 00' to form a parasitic capacitance, when the display stage is converted to the touch stage, if the signal on the data signal line 21 'jumps, the signal is coupled to the touch electrode 31' due to the coupling effect.

For example, fig. 2 is a timing diagram of an operation process of a pixel circuit in the prior art, and referring to fig. 1 and fig. 2 in combination, a data refresh period T 'of a touch display panel 00' generally includes a data write frame T1 'and a hold frame T2', and after a data write frame T1 'is finished, in order to balance the potentials of the data signal lines 21', when the hold frame T2 'is entered, a signal S0' of each data signal line 21 'is transited to a preset voltage Vpark', so that the potentials of the data voltage write nodes of the pixel circuits 22 'electrically connected to each data signal line are kept consistent, so as to ensure that the data voltage write conditions of each pixel circuit 22' are kept consistent when the data voltage is written in a next data write frame.

However, when the potentials of the data signal lines 21 'are simultaneously changed to the predetermined voltages, since the voltages of all the data signal lines 21' are changed at the same time, the voltage variation of each data signal line 21 'is coupled to the touch electrode 31' in the touch layer 30 'at the same time, so that the touch signal of the touch electrode fluctuates greatly instantaneously, that is, the touch signal of the touch electrode is disturbed greatly (e.g., the touch disturbance signal ST') instantaneously, thereby possibly causing a problem that the disturbance signal is determined as the touch signal, which may result in that the true touch signal cannot be identified, and the touch accuracy and sensitivity of the touch display panel are affected.

In order to solve the above technical problem, an embodiment of the present invention provides a touch display panel, including: the touch control device comprises a substrate, a pixel circuit layer and a touch control functional layer, wherein the pixel circuit layer and the touch control functional layer are positioned on one side of the substrate and are arranged in a stacked mode; the pixel circuit layer comprises a plurality of data signal lines and a plurality of pixel circuits arranged in an array; at least part of the pixel circuits in the same column are electrically connected with the same data signal line; the touch function layer comprises a plurality of touch electrodes; one data refreshing period of the touch display panel comprises continuous data writing frames and continuous data maintaining frames; when data is written into a frame, the data signal lines transmit data voltages of the pixel circuits electrically connected with the data signal lines in a time-sharing manner; when the data refreshing mode of the touch display panel is a first mode, the holding frame comprises a first stage, a second stage and a third stage which are continuous; the first stage is positioned between the second stage and the data writing frame of the current data refreshing period, and the third stage is positioned between the second stage and the data writing frame of the next data refreshing period; in the second stage, signals transmitted by all the data signal lines are preset voltages; at the initial moment of the first stage, at least part of signals transmitted by the data signal lines are not jumped to preset voltage; and/or at the starting time of the third phase, at least part of signals transmitted by the data signal lines do not jump to the data voltage.

By adopting the technical scheme, in at least part of the maintaining frames with the data refreshing mode being the first mode, the signals transmitted by the data signal lines are kept at the preset voltage, so that the electric quantity received by each pixel circuit electrically connected with each data signal line is kept consistent, the condition that the data voltage is written into each pixel circuit in the next data writing frame is kept consistent, the display uniformity of the touch display panel is improved, and the problem of low-frequency flicker can be effectively reduced; meanwhile, the hold frame is divided into a first stage, a second stage and a third stage, at the initial time of the first stage, at least part of signals of the data lines are not hopped to preset voltages, and/or at the initial time of the third stage, at least part of signals transmitted by the data lines are not hopped to data voltages, so that the signals transmitted by the data lines are prevented from hopping instantaneously at the same time and being coupled to a larger electric charge amount of the touch electrode, and the touch signals in the touch electrode, and therefore the interference of the signals transmitted by the data lines to the touch signal of the touch electrode can be effectively reduced, and the display uniformity of the touch display panel can be improved while the touch accuracy and sensitivity of the touch display panel are ensured.

The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

Fig. 3 is a schematic top view of a touch display panel according to an embodiment of the present invention, and fig. 4 is a schematic cross-sectional view taken along a section B-B in fig. 3, where as shown in fig. 3, the touch display panel 00 includes: the touch screen comprises a substrate 10, a pixel circuit layer 20 and a touch function layer 30, wherein the pixel circuit layer 20 and the touch function layer 30 are positioned on one side of the substrate 10 in a stacked mode; the pixel circuit layer 20 includes a plurality of data signal lines 21 and a plurality of pixel circuits 22 arranged in an array; at least some of the pixel circuits 22 in the same column are electrically connected to the same data signal line 21; the touch function layer 30 includes a plurality of touch electrodes 31; fig. 5 is a timing diagram illustrating an operation process of a pixel circuit according to an embodiment of the invention, and as shown in fig. 5, a data refresh period T of the touch display panel 00 includes a continuous data write frame T1 and a hold frame T2; in the data write frame T1, the data signal line 21 transmits the data voltage Vdata of each pixel circuit 22 electrically connected to the data signal line 21 in a time-division manner; when the data refresh mode of the touch display panel 00 is the first mode, the hold frame T2 includes a first phase T21, a second phase T22 and a third phase T23 in succession; the first stage T21 is located between the second stage T22 and the data write frame T1 of the current data refresh period T, and the third stage T23 is located between the second stage T22 and the data write frame T1 of the next data refresh period T; in the second stage T22, all signals transmitted by the data signal lines 21 are the preset voltage Vpark; at the beginning of the first period T21, at least a part of the signals transmitted by the data signal line 21 do not jump to the preset voltage Vpark; and/or, at the starting time of the third stage T23, at least a part of the signals transmitted by the data signal line 21 do not jump to the data voltage Vdata.

The plurality of pixel circuits 22 are arranged in an array in the pixel circuit layer 20, and the data signal line 21 may be electrically connected to at least some of the pixel circuits 22 in the same column, so that a data voltage may be supplied to each pixel circuit 22 in the same column when data is written in the frame T1, so that the light emitting element of each pixel circuit 22 may emit light according to the received data voltage. Taking the touch display panel 00 as a mutual capacitive touch display panel as an example, the touch electrode 31 generally includes a touch driving electrode 311 and a touch sensing electrode 312, and the touch driving electrode 311 and the touch sensing electrode 312 may be disposed in the same layer or in different layers in an insulating manner. In the display stage, the data signal is provided in time division by the row pixel circuit through the data signal line 21, and in the touch stage, the touch driving electrode 311 receives the touch driving signal and the touch sensing electrode 312 receives the touch sensing signal, so that the touch position can be determined according to the touch sensing signal and the touch driving signal.

It is to be understood that one data refresh period may be equal to the time between the start time of one data write frame T1 to the start time of another data write frame T1. The first mode may be a mode with a lower data refresh frequency, or may also be a mode with a higher data refresh frequency, which is not specifically limited in this embodiment of the present invention, and preferably, the first mode is a mode with a lower data refresh frequency.

Correspondingly, one data refresh period T of the touch display panel 00 includes a holding frame T2 which is continuous with the data write frame T1, and after the data write frame T1 is finished, in order to balance the potentials of the data signal lines 21, the potentials of the data signal lines 21 are hopped to preset voltages, so that the potentials of the data voltage write nodes of the pixel circuits 22 connected to the data signal lines 21 are kept consistent, so as to ensure that the touch display panel 00 can realize uniform display after the data voltage is written in the next data write frame, and simultaneously effectively reduce the problem of low-frequency flicker. On this basis, in order to avoid a large influence on the touch performance caused by simultaneous transition of signals transmitted by the data signal lines 21, the signals transmitted by the data signal lines 21 may be transitioned to a preset voltage in stages, for example, when the data refresh mode is the first mode, the hold frame T2 therein may be divided into a first stage T21, a second stage T22 and a third stage T23, and the sequence of the three stages may be the first stage T21, the second stage T22 and the third stage T23 in sequence, that is, the first stage T21 is located between the second stage T22 and the data write frame T1 of the current data refresh period T, and the third stage T23 is located between the second stage T22 and the data write frame T1 of the next data refresh period T; at the beginning of the first phase T21, at least some of the signals of the data signal lines 21 may not jump to the preset voltage Vpark, so that the signals of the data signal lines 21 do not jump to the preset voltage Vpark at the same time when the data write frame T1 ends and enters the hold frame T2, thereby reducing the amount of interference ST on the signals on the touch electrodes 31 due to the jumping of the data signal lines 21; similarly, at the beginning of the third stage T23, at least some of the signals of the data signal line 21 are not transited to the data voltage Vdata, so that when entering the third stage T23, the signals of the data signal line 21 are not simultaneously transited to the preset voltage Vpark, thereby reducing the interference ST on the signals on the touch electrode 31 due to the transition of the data signal line 21.

It is to be understood that at least a part of the signals of the data signal lines 21 do not jump to the preset voltage Vpark at the start time of the first phase, that is, all the signals of the data signal lines 21 may not jump to the preset voltage Vpark at the start time of the first phase, or a part of the signals of the data signal lines 21 may jump to the preset voltage Vpark at the start time of the first phase; similarly, at least a part of the signals of the data signal lines 21 may not jump to the preset voltage Vpark at the starting time of the third phase, that is, all the signals of the data signal lines 21 may not jump to the preset voltage Vpark at the starting time of the third phase, or a part of the signals of the data signal lines 21 may jump to the preset voltage Vpark at the starting time of the third phase. On the premise of reducing the coupling amount coupled to the touch electrode due to the signal jump transmitted by the data signal line, the embodiment of the invention does not specifically limit the jump mode of the signal transmitted by the data signal line.

In an alternative embodiment, fig. 5 is a working timing diagram of a touch display panel according to an embodiment of the present invention, and referring to fig. 3 and fig. 5 in combination, at a starting time of a first phase T21, at least a portion of signals transmitted by the data signal lines 21 jump to a preset voltage Vpark; and/or, at the starting time of the third stage T23, at least a part of the signal transmitted by the data signal line 21 jumps to the data voltage Vdata.

Specifically, at the beginning of the first stage T21, at least some of the data signal lines 21 are controlled to jump to the preset voltage Vpark, for example, the data signal line 21 transmitting the signal S1 jumps to the preset voltage Vpark from the data voltage Vdata, and signals transmitted by other data signal lines 21 do not jump to the preset voltage Vpark, so as to avoid the problem that when all the signals transmitted by the data signal line 21 jump together at the same time, the amount of charge coupled to the touch electrode 31 by the data signal line 21 is too much, and the interference degree of the touch signal to the touch electrode 31 can be reduced; based on the same principle, at the beginning of the third stage T23, at least some of the signals transmitted by the data signal lines 21 may be controlled to transition from the preset voltage Vpark to the data voltage Vdata, for example, the data signal line 21 transmitting the signal S1 transitions from the preset voltage Vpark to the data voltage Vdata, while the signals transmitted by other data signal lines 21 do not transition to the data voltage Vdata, which can also reduce the interference degree of the touch signal on the touch electrode 31.

Optionally, with continuing reference to fig. 3 and 5, at the termination time of the first stage T21, all signals transmitted by the data signal lines 21 jump to the preset voltage Vpark; and, at the termination time of the third stage T23, the signal transmitted by each data signal line 21 jumps to the data voltage Vdata.

Specifically, each data signal line 21 may complete the jump from the data voltage Vdata to the preset voltage Vpark in the first stage T21, at this time, it can be ensured that at least the signal of the data signal line 21 is maintained at the preset voltage Vpark in the second stage T22, so as to ensure a normal display function; and, the third stage T23 is performed with the transition from the preset voltage Vpark to the data voltage Vdata, so as to ensure that the data voltage signal is normally written into each pixel circuit 22 in the data writing frame T1 of the next frame as much as possible, thereby improving the display uniformity.

Optionally, fig. 6 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention, and as shown in fig. 6, the pixel circuit 22 includes a data writing module 221 and a driving transistor M1; the input end of the data writing module 221 is electrically connected to the data signal line 21; the data writing module 221 is configured to turn on during the data writing period TW to provide the signal transmitted by the data signal line 21 to the driving transistor M1, and to be in an off state during the non-data writing period; the data write frame T1 includes at least the data write phase TW of each pixel circuit 22.

Specifically, the data writing frame T1 may include a data writing period TW of each pixel circuit 22, during which the data signal line 21 transmits the data voltage Vdata transmitted from the turned-on data writing module 221 to the first electrode of the driving transistor M1, and during a non-data writing period (e.g., an initialization period TV and a light emitting period TD), the data writing module 221 is in a turned-off state, and the voltage signal transmitted by the data signal line 21 cannot be transmitted to the first electrode of the driving transistor M1 through the data writing module 221.

The data writing module 11 may include a data writing transistor M2, a first pole of the data writing transistor M2 is electrically connected to the data line 21, a second pole of the data writing transistor M2 is electrically connected to a first pole of the driving transistor M1 at the first node N1, a gate of the data writing transistor M2 receives a first Scan signal Scan1, and when the first Scan signal Scan1 is an enable level for controlling the data writing transistor M2 to be turned on, the data writing transistor M2 is turned on, so that the data voltage provided by the data line 21 can be transmitted to the first pole of the driving transistor M1.

Exemplarily, fig. 7 is a driving timing diagram of a pixel circuit according to an embodiment of the present invention, and referring to fig. 6 and 7 in combination, the data write frame T1 may include an initialization phase TV, a data write phase TW and a light emitting phase TD, and the pixel circuit 22 may further include an initialization transistor M3, a threshold compensation transistor M4, a first light emitting control transistor M5, a second light emitting control transistor M6 and a reset transistor M7. Wherein, the first pole of the initialization transistor M3 is electrically connected to the gate of the driving transistor M1 and the second node N2, the second pole of the initialization transistor M3 receives the initialization signal Vref, the gate of the initialization transistor M3 receives the second Scan signal Scan2, during the initialization phase TV, the second Scan signal Scan2 is an enable level for controlling the initialization transistor M3 to be turned on, so that the initialization signal Vref at the initialization signal end can be transmitted to the gate of the driving transistor M1, and at the end of the initialization phase TV, the second Scan signal S2 is changed from the enable level to the disable level, so that the initialization transistor M3 is in the off state; the first pole of the threshold compensation transistor M4 is electrically connected to the second pole of the driving transistor M1, the second pole of the threshold compensation transistor M4 is electrically connected to the gate of the driving transistor M1, the gate of the threshold compensation transistor M4 can also receive the first Scan signal Sca n1, the first Scan signal Scan1 is an enable level for controlling the data writing transistor M2 and the threshold compensation transistor M4 to be turned on during the data writing phase TW, so that the data voltage signal Vdata can be transmitted to the gate of the driving transistor M1 through the data writing transistor M2, the driving transistor M1 and the threshold compensation transistor M4, and at the end of the data writing phase TW, the first Scan signal Scan1 is changed from the enable level to the non-enable level to turn off the data writing transistor M2 and the threshold compensation transistor M4; a first pole of the first light emission control transistor M5 receives the first power supply voltage signal PVDD, a second pole of the first light emission control transistor M5 is electrically connected to a first pole of the driving transistor M1, a second pole of the driving transistor M1 is electrically connected to a first pole of the second light emission control transistor M6, a second pole of the second light emission control transistor M6 is electrically connected to the light emitting element D0, gates of the first light emission control transistor M5 and the second light emission control transistor M6 each receive the light emission control signal Emit, the light emission control signal Emit is an enable level that controls the first light emission control transistor M5 and the second light emission control transistor M6 to be turned on in the light emission phase TD, so that a current path is formed from the first power supply voltage signal PVDD to a cathode of the light emitting element D0, so that the driving current supplied from the driving transistor M1 can be transmitted to the light emitting element D0 to control light emission thereof, and at the end of the light emission phase TD, the emission control signal Emit changes from the enable level to the disable level. Further, the control signal received by the gate of the reset transistor M7 may be the first Scan signal Scan1, the reset signal received by the first pole of the reset transistor M7 may be the same as the initialization signal Vref, and the second pole of the reset transistor M7 is electrically connected to the anode of the light emitting element D0, so that when the enable level of the first Scan signal S1 controls the reset transistor M7 to be turned on, the reset signal, i.e., the initialization signal Vref, can be supplied to the anode of the light emitting element D0 to reset the anode of the light emitting element D0. In addition, the pixel circuit 10 may further include a storage capacitor Cst, and one end of the storage capacitor Cst is electrically connected to the second node N2, and the other end of the storage capacitor Cst receives the first power signal PVDD.

It should be noted that the embodiment of the present invention only exemplarily illustrates the pixel circuit with the structure of 7T1C, and it is understood that in other embodiments provided by the present invention, the display panel may include other feasible pixel circuits modified or improved on the basis of the pixel circuit, and this is not limited in particular by the embodiment of the present invention.

Optionally, fig. 8 is a timing diagram of an operation of another touch display panel provided by an embodiment of the invention, and referring to fig. 3 and fig. 8 in combination, the hold frame T2 includes N hold stages TK, N +1 data processing stages TH; the first data processing stage T1 is located between the data write frame T1 of the current data refresh period T and the first preservation stage TK, and the (N + 1) TH data processing stage TH is located between the Nth preservation stage TK and the next data refresh period T; other data processing stages TH are respectively positioned between two adjacent keeping stages TK; n is not less than 1 and is an integer; wherein the first stage T21 is located within the first data processing stage TH; and/or the third stage T23 is located within the (N + 1) TH data processing stage TH.

Specifically, when the touch display panel displays, after the system motherboard writes the signal related to the display luminescence into the driving chip, the driving chip decodes, analyzes, converts, etc. all the signals related to the display luminescence (e.g., the scan signal, the data voltage signal, etc.), so as to provide the corresponding data voltage signal to each pixel circuit in combination with the signal related to the display luminescence, so that each pixel unit in the touch display panel can display according to the preset gray scale, the above-mentioned stage of processing the signal related to the display luminescence is the data processing stage TH, each retention frame T2 may include a plurality of sequentially alternating retention stages TK and data processing stages TH, and the first data processing stage TH is located between the data writing frame T1 of the current data refresh period T and the first retention stage TK, and the last data processing stage TH is located between the last retention stage TK and the next data refresh period T, the voltage jump of the signal of the data signal line 21 can be completed in one of the data processing stages, that is, the first stage T21 in which the signal of the data signal line 21 jumps from the data voltage Vdata to the preset voltage Vpark is in the first data processing stage TH of the current hold frame T21, so that the signal of the data signal line 21 completes the jump from the data voltage Vdata to the preset voltage Vpark in the first data processing stage T5, and at this time, it can be ensured that the signal of the data signal line 21 is the preset voltage Vpark in at least one following hold stage TK (i.e., the first hold stage TK); accordingly, the third stage T23 where the signal of the data signal line 21 jumps from the preset voltage Vpark to the data voltage Vdata may be in the last data processing stage TH of the current holding frame T21 (i.e., in the (N + 1) TH data processing stage TH), and the third stage T23 is in the (N + 1) TH data processing stage TH, i.e., the signal of the data signal line 21 completes the jump from the preset voltage Vpark to the data voltage Vdata in the last data processing stage TH, at least in the previous holding stage TK (i.e., in the nth holding stage), the signal of the data signal line 21 is the preset voltage Vpark; alternatively, only the first stage T21 may be located in the first data processing stage TH, and the transition of the signal transmitted through each data signal line 21 in the third node T23 is not limited; alternatively, only the third stage T23 may be located in the last (N + 1) TH data processing stage TH, but the transition situation of the signal transmitted by each data signal line 21 in the first stage T21 is not limited, and on the premise that the core invention point of the embodiment of the present invention can be implemented, the embodiment of the present invention is not specifically limited to this.

Alternatively, referring to fig. 6 and 8 in combination, each of the holding phases TK includes the data writing phase TW of the respective pixel circuit 22.

Specifically, since the data writing module 221 can be in a conducting state during the data writing period TW to be able to supply the signal transmitted by the data signal line 21 to the first pole (i.e., the first node N1) of the driving transistor M1, and since the signal of the data signal line 21 is held at the preset voltage Vpark during at least one of the holding periods TK in the holding frame T2, each of the holding periods TK is set to include the data writing period TW of each pixel circuit 22, it is possible to ensure that the preset voltage Vpark transmitted by the data signal line 21 can be successfully written into the first pole of the driving transistor M1 during the holding frame T2, thereby enabling an effect of bias adjustment of the potential of the driving transistor M1, and ensuring that the driving transistor M1 can drive the light emitting element D0 to emit light accurately.

Optionally, fig. 9 is a timing diagram of an operation of another touch display panel provided by an embodiment of the invention, and referring to fig. 3 and fig. 9 in combination, the hold frame T2 includes N hold stages TK, N +1 data processing stages TH; the first data processing stage TH is positioned between a data writing frame T1 of the current data refreshing period T and the first keeping stage TK, and the (N + 1) TH data processing stage TH is positioned between the Nth keeping stage TK and the next data refreshing period T; other data processing stages TH are respectively positioned between two adjacent keeping stages TK; n is not less than 1 and is an integer; the first phase T21 lies in the time period between the start of the first data processing phase TH and the end of the nth holding phase TK; and/or the third phase T23 is located in the time period between the start time of the mth holding phase TK and the end time of the (N + 1) TH data processing phase TH; n is more than or equal to 1 and less than or equal to m and less than or equal to N, and N and m are positive integers.

Specifically, the process of jumping the signal of the data signal line 21 from the data voltage Vdata to the preset voltage Vpark is not limited to be completed within the first data processing phase TH, and the first phase T21 may span more holding phases TK and data processing phases TH, i.e. the starting time of the first phase T21 is located at the starting time of the nth (e.g. first) data processing phase TH, and the ending time of the first phase T21 is located before the ending time of the first holding phase TK; similarly, the process of the signal of the data signal line 21 jumping from the preset voltage Vpark to the data voltage Vdata is not limited to the third stage T23, but the starting time of the third stage T23 can be at the starting time of the mth (e.g., Nth) holding stage TK, and the ending time of the third stage T23 can be at the ending time of the (N + 1) TH, i.e., the last data processing stage TH, where N is greater than or equal to 1 and less than or equal to m and N and m are both positive integers. Therefore, the time for voltage jump in the first stage T21 and the third stage T23 can be ensured to be longer, and the signal on the data signal line 21 is effectively prevented from being concentrated in a certain time to jump so as to cause larger interference to the potential of the touch electrode.

Optionally, with combined reference to fig. 6 and 9, the first n holding phases TK within the holding frame T2 are all non-data writing phases; and/or the last s keeping stages TK in the keeping frame are all non-data writing stages; s-N-m + 1.

Specifically, in the first stage T21 where the signal of the data signal line 21 jumps from the data voltage Vdata to the preset voltage Vpark, the holding stage TK overlapped with the first stage T21 may be set to include no data writing stage TW, and both are non-data writing stages, so as to avoid that the signal of the data signal line 21 does not jump completely to the preset voltage Vpark to affect the first electrode potential or the gate electrode potential of the driving transistor M1, and further affect the display luminance; based on the same principle, the phase of jumping the signal of the data signal line 21 from the preset voltage Vpark to the data voltage Vdata, that is, the holding phase TK overlapping with the third phase T23 does not include the data writing phase TW, but is a non-data writing phase, so as to avoid that the signal of the data signal line 21 is not completely jumped to the data voltage Vdata to affect the first electrode potential or the gate potential of the driving transistor M1, and further affect the display brightness.

Alternatively, with continuing combined reference to fig. 6 and 9, each retention phase TK comprises the data writing phase TW of each pixel circuit 22 within the second phase T22.

Specifically, since the signal of the data signal line 21 is maintained at the preset voltage Vpark in the second stage T22, each of the maintaining stages TK having an overlap with the second stage T2 may be made to include the data writing stage TW of each of the pixel circuits 22, so that the preset voltage Vpark can be written to the connection node N1 of the data writing block 211 and the driving transistor M1 in the maintaining frame, so that the potential of the driving transistor M1 can be bias-adjusted, so that the driving transistor M1 can be ensured to drive the light emitting element D0 to emit light accurately.

Optionally, with reference to fig. 3 and fig. 5 in combination, in the first phase T21, when at least a part of the signals transmitted by the data signal line 21 do not jump to the preset voltage Vpark, the first phase T21 includes p preset voltage jump termination time T1; the plurality of data signal lines 21 constitute p data signal line groups; p is more than or equal to 2 and is an integer; the signals transmitted by the data signal lines 21 in the same group of data signal line groups jump to the preset voltage Vpark at the same preset voltage jump termination time t 1; the signals transferred by the data signal lines 21 of the different data signal line groups transition to the preset voltage Vpark at the different preset voltage transition termination time t 1.

Specifically, all the data signal lines 21 may be grouped, and signals of each group of data signal lines 21 may jump to the preset voltage Vpark at different preset voltage jump termination time T1 in the first stage T1, so as to avoid that the signals of all the data signal lines 21 jump to the preset voltage at the same time, which may cause a large influence on the touch signal of the touch electrode 31, for example, the display area a1 of the touch display panel 00 may be divided into p regions along the first direction X, that is, the data signal lines 21 are divided into p data signal line groups, the signals transmitted by the data signal lines 21 in the same data signal line group jump to the preset voltage Vpark at the same preset voltage jump termination time T1, and the signals of different data signal line groups jump to the preset voltage Vpark at different preset voltage jump termination time T1.

For example, the display area a1 of the touch display panel 00 may be divided into 3 areas along the first direction X, and the 3 areas are uniformly distributed and sequentially arranged, i.e., the plurality of data signal lines 21 are divided into 3 data signal line groups, the corresponding first phase T21 includes 3 preset voltage transition termination times T1, and the signals transmitted by each data signal line group are respectively S1, S2 and S3, the control signals S1, S2 and S3 respectively complete the jump at the termination time t1 of 3 preset voltage jumps, thus, when each data signal line 21 jumps to the predetermined voltage Vpark, only a portion of the data signal lines 21 have jumped at the predetermined voltage jump termination time t1, so that the amount of electricity coupled to the touch sensing electrode 311 at the same time is less, further, the interference degree to the touch sensing signal of the touch sensing electrode 312 is small, and the touch effect of the touch display panel can be effectively ensured.

In an optional embodiment, the data signal lines 21 may be further divided into groups according to odd columns and even columns, that is, the data signal lines 21 in the odd columns may be divided into one data signal line group along the first direction X, and the data signal lines 21 in the even columns may be divided into one data signal line group, so that signals transmitted by the data signal lines 21 in the two data signal line groups respectively complete transition at two preset voltage transition termination times t1 according to the groups; or, the data signal lines 21 overlapped by each touch sensing electrode 312 in the thickness direction of the touch display panel 00 are grouped, each preset voltage transition termination time T1 controls the signals of one or a small number of data signal lines 21 overlapped by each touch sensing electrode 312 to complete the transition, and the signals of all the data signal lines 21 overlapped by each touch sensing electrode 312 to complete the transition in the first stage T21. By dividing each data signal line 21 into p data signal line groups, and setting the first stage T21 to include p preset voltage jump Vpark change termination times, the signals transmitted by the data signal lines 21 in the same group of data signal line groups jump to the preset voltage Vpark at the same preset voltage jump termination time T1; signals transmitted by the data signal lines 21 of different data signal line groups are hopped to the preset voltage Vpark at the different preset voltage hopping termination time t1, so that the amount of electric charges coupled from the data signal lines 21 to the touch sensing electrodes 311 is small, the interference degree on the touch sensing signals of the touch sensing electrodes 312 is small, and the touch effect of the touch display panel can be effectively ensured.

It should be noted that, in the embodiment of the present invention, only a few conceivable grouping manners of the data signal lines 21 are exemplarily shown, and it should be understood that the grouping manners of the data signal lines 21 are not limited to the foregoing ones, and may also include other feasible grouping manners as long as the same technical effects can be achieved, and the embodiment of the present invention is not limited thereto.

Alternatively, with continuing reference to fig. 3 and 5, based on the same principle, when the third stage T23 changes the signal transmitted by each data signal line 21 to the data voltage Vdata, a method of dividing the data signal line 21 into a plurality of data signal line groups may also be adopted. That is, when at least a part of the signals transmitted by the data signal line 21 is not transited to the data voltage Vdata in the third stage T23, the third stage T23 includes q data voltage transition termination times T2; the plurality of data signal lines 21 constitute q data signal line groups; q is not less than 2 and is an integer; the signals transmitted by the data signal lines 21 of the same group of data signal line groups jump to the data voltage Vdata at the same data voltage jump termination time t 2; the signal transmitted by the data signal line 21 of the different data signal line group jumps to the data voltage Vdata at the different data voltage jump termination time t 2.

In this way, the data signal lines 21 are divided into q data signal line groups, and the third stage T21 is set to include q preset voltage jump Vpark transition termination times, so that the signals transmitted by the data signal lines 21 in the same group of data signal line groups jump to the data voltage Vdata at the same data voltage jump termination time T2; signals transmitted by the data signal lines 21 of different data signal line groups are hopped to the data voltage Vdata at the different data voltage hopping termination time t2, so that the amount of electric charges coupled to the touch sensing electrodes 312 by the data signal lines 21 at the same time is small, the interference degree on the touch sensing signals of the touch sensing electrodes 312 is small, and the touch effect of the touch display panel can be effectively ensured.

Alternatively, referring to fig. 5, 8 or 9, the signals transmitted by the data signal lines 21 of the same data signal line group are transited from the data voltage Vdata to the preset voltage Vpark at the same preset voltage transition termination time t 1.

Specifically, in the first stage T21, the signals transmitted by the data signal lines 21 in the same data signal line group can be controlled to directly jump from the data voltage Vdata to the preset voltage Vpark at the same preset voltage jump termination time T1, so that the same jump manner is adopted for the signals of the data signal lines 21 in the same data signal line group, and the signal control process can be simplified.

Optionally, based on the same principle, with continuing reference to fig. 5, 8 or 8, in the third stage T23, the signal transmitted by the data signal line 21 of the same data signal line group may also be controlled to jump from the preset voltage Vpark to the data voltage Vdata at the same data voltage jump termination time T2, that is, jump from the preset voltage Vpark to the data voltage Vdata directly, which also has the effect of simplifying the signal control process.

Optionally, fig. 10 is an operation timing diagram of another touch display panel according to an embodiment of the present invention, as shown in fig. 10, when at least a portion of the signals transmitted by the data signal lines 21 do not jump to the preset voltage Vpark in the first stage T21, in the first stage T21, the signals transmitted by the data signal lines 21 change to the preset voltage Vpark after a jumps by a times from the data voltage Vdata; a is more than or equal to 2, and a is an integer; when at least a part of the signals transmitted by the data signal lines 21 are not transited to the data voltage Vdata in the third stage T23, the signals transmitted by the respective data signal lines 21 are changed into the data voltage Vdata after b-times of transition from the preset voltage Vpark in a preset step amount in the third stage T23; b is not less than 2, and b is an integer.

Specifically, in the first stage T21, when the signal transmitted by each data signal line 21 is controlled to jump from the data voltage Vdata to the preset voltage Vpark, the signal S0 transmitted by the data signal line 21 may be further set to gradually increase (or decrease) from the data voltage Vdata to the preset voltage Vpark, that is, jump from the data voltage Vdata to the preset voltage Vpark in a stepping manner by a preset stepping amount, so that the voltage of each data signal line 21 jumps each time is small, and therefore the electric quantity coupled to the touch electrode 31 at the same time is small, and further the interference degree on the touch signal of the touch electrode 31 is small, and the touch effect of the touch display panel can be effectively ensured; based on the same principle, when the third stage T23 controls the signal transmitted by each data signal line 21 to jump from the preset voltage Vpark to the data voltage Vdata, the signal transmitted by the data signal line 21 may be set to gradually decrease (or increase) from the preset voltage Vpark to the data voltage Vdata, that is, jump is started from the preset voltage Vpark to the data voltage Vdata in a stepping manner by a preset stepping amount, which can also achieve the effect of reducing the interference degree of the touch signal of the touch electrode 31, thereby effectively ensuring the touch performance of the touch display panel.

In other embodiments of the present invention, in the first phase T21, the time-sharing transition and the step-wise transition of the signals transmitted by the data signal lines 21 in the data signal line groups of different groups may be combined, so that each data signal line 21 completes the transition from the data voltage Vdata to the preset voltage Vpark.

Optionally, fig. 11 is a timing diagram illustrating a working timing of another touch display panel according to an embodiment of the present invention, and as shown in fig. 11, the first stage further includes preset voltage transition start times t3 corresponding to p preset voltage transition termination times t1 one to one; the time length between each pair of preset voltage jump starting time t3 and preset voltage jump ending time t1 is a fixed value; in a time period between a pair of preset voltage transition start time t3 and a preset voltage transition end time t1, a signal transmitted by the data signal line 21 of the same data signal line group becomes a preset voltage Vpark after a number of transitions by a preset step amount from the data voltage Vdata; a is more than or equal to 2, and a is an integer.

Specifically, the signals transmitted by the data signal lines 21 in different data signal line groups hop to the preset voltage Vpark at different preset voltage transition termination time t1, and the signals transmitted by the data signal lines 21 in the same data signal line group hop to the preset voltage Vpark at the same preset voltage transition termination time t 1; in a time period between the starting time t3 of the same predetermined voltage transition and the ending time t1 of the predetermined voltage transition, the signal transmitted by the data signal line 21 of the same data signal line group is increased (or decreased) from the data voltage Vdata to the predetermined voltage Vpark, that is, the successive data voltage Vdata is transitioned to the predetermined voltage Vpark by a predetermined step amount, so that the electric quantity coupled to the touch electrode 31 at the same time can be further reduced, the interference degree of the touch signal to the touch electrode 31 can be further reduced, and the touch effect of the touch display panel can be further improved.

Optionally, based on the same principle, in the third stage, the time-sharing transition and the step-by-step transition of the signals transmitted by the data signal lines 21 in the data signal line groups of different groups may be combined, so that each data signal line 21 completes the transition from the preset voltage Vpark to the data voltage Vdata, referring to fig. 12, the third stage further includes a data voltage transition start time t4 corresponding to the time when the transition of q data voltages ends t 2; the time length between the data voltage jump starting time t4 and the data voltage jump ending time t2 in each pair is a fixed value; in a time period between a pair of data voltage transition start time t4 and a data voltage transition end time t2, a signal transmitted by the data signal line 21 of the same data signal line group becomes a data voltage Vdata after b transitions by a preset step amount from a preset voltage Vpark; b is not less than 2, and b is an integer; the effect of further reducing the electric quantity coupled to the touch electrode 31 at the same time can be achieved, that is, the degree of interference to the touch signal of the touch electrode 31 can be further reduced, so that the touch effect of the touch display panel can be further improved.

It should be understood that, in the above embodiments, only the manner of the transition of the signal transmitted by each data signal line from the data voltage to the preset voltage in the first stage is the same as the manner of the transition of the signal transmitted by each data signal line from the preset voltage to the data voltage in the third stage, but the transition manners in the two stages may also be different in the embodiments of the present invention, and may be implemented by combining in any feasible manner, and the embodiments of the present invention are not limited to this specifically.

Optionally, when the data refresh mode of the touch display panel is the second mode, in the frame holding process, the signals transmitted by all the data signal lines are the preset voltage Vpark.

Specifically, the second refresh mode may be a high-frequency data refresh mode, and at this time, because the data refresh period is short, the time for holding the frame is also short, and to ensure the display accuracy, the time-sharing jump and/or the step jump of the signal of each data signal line may not be performed any more, and the signal of each data signal line may be controlled to directly jump from the data voltage to the preset voltage at the same time.

Based on the same inventive concept, embodiments of the present invention further provide a display device, where the display device includes the touch display panel provided in any embodiment of the present invention, and therefore the display device provided in the embodiments of the present invention includes technical features of the touch display panel provided in any embodiment of the present invention, and can achieve beneficial effects of the touch display panel provided in any embodiment of the present invention, and the same points can refer to the above description of the light emitting panel provided in the embodiments of the present invention, and are not repeated herein.

Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention, as shown in fig. 12, the display device 100 includes a display area a1 and a non-display area a2, and the display device 100 may be any electronic product with a display function, including but not limited to the following categories: VR displays, televisions, notebook computers, desktop displays, tablet computers, digital cameras, mobile phones, smart bracelets, smart glasses, vehicle-mounted displays, medical equipment, industrial control equipment, touch interaction terminals, and the like.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A touch display panel, comprising: the touch control panel comprises a substrate, a pixel circuit layer and a touch control functional layer, wherein the pixel circuit layer and the touch control functional layer are positioned on one side of the substrate in a stacked mode;

2. The touch display panel according to claim 1, wherein the pixel circuit includes a data writing module and a driving transistor; the input end of the data writing module is electrically connected with the data signal line; the data writing module is used for being conducted in a data writing stage so as to provide a signal transmitted by the data signal line to the driving transistor and be in a closed state in a non-data writing stage;

wherein the data writing frame includes at least the data writing stage of each of the pixel circuits.

3. The touch display panel of claim 2, wherein the hold frame comprises N hold stages, N +1 data processing stages; the first data processing stage is positioned between the data writing frame of the current data refreshing period and the first holding stage, and the (N + 1) th data processing stage is positioned between the Nth holding stage and the next data refreshing period; the other data processing stages are respectively positioned between two adjacent holding stages; n is not less than 1 and is an integer;

wherein the first stage is within a first of the data processing stages; and/or, the third stage is located within the (N + 1) th of the data processing stages.

4. The touch display panel of claim 3, wherein each of the holding phases comprises the data writing phase of each of the pixel circuits.

5. The touch display panel of claim 2, wherein the hold frame comprises N hold stages, N +1 data processing stages; the first data processing stage is positioned between the data writing frame of the current data refreshing period and the first holding stage, and the (N + 1) th data processing stage is positioned between the Nth holding stage and the next data refreshing period; the other data processing stages are respectively positioned between two adjacent holding stages; n is not less than 1 and is an integer;

the first stage is positioned in a time period from the starting time of the first data processing stage to the ending time of the nth holding stage; and/or the third phase is located in a time period from the starting time of the mth holding phase to the ending time of the (N + 1) th data processing phase; n is more than or equal to 1 and less than or equal to m and less than or equal to N, and N and m are positive integers.

6. The touch display panel of claim 5, wherein the first n holding phases in the holding frame are the non-data writing phases; and/or the last s holding stages in the holding frame are the non-data writing stages; s-N-m + 1.

7. The touch display panel of claim 6, wherein each of the hold stages in the second stage comprises the data write stage of each of the pixel circuits.

8. The touch display panel according to claim 1, wherein at the termination time of the first stage, all signals transmitted by the data signal lines jump to the preset voltage; and at the termination time of the third stage, the signal transmitted by each data signal line jumps to the data voltage.

9. The touch display panel according to claim 1, wherein at a starting time of the first stage, at least a part of signals transmitted by the data signal lines jump to the preset voltage; and/or at the starting time of the third phase, at least part of signals transmitted by the data signal lines jump to the data voltage.

10. The touch display panel according to claim 1, wherein when at least some of the signals transmitted by the data signal lines do not jump to the preset voltage in the first phase, the first phase includes p preset voltage jump termination times; the data signal lines form p data signal line groups; p is more than or equal to 2 and is an integer;

signals transmitted by the data signal lines of the same group of data signal line groups jump to the preset voltage at the same preset voltage jump termination time; and the signals transmitted by the data signal lines of different data signal line groups jump to the preset voltage at different preset voltage jump termination moments.

11. The touch display panel of claim 10, wherein the signals transmitted by the data signal lines in the same data signal line group jump from the data voltage to the preset voltage at the same preset voltage jump termination time.

12. The touch display panel of claim 10, wherein the first phase further comprises preset voltage jump starting times corresponding to the p preset voltage jump ending times in a one-to-one manner; the time length between the preset voltage jump starting time and the preset voltage jump ending time of each pair is a fixed value;

in a time period between a pair of preset voltage jump starting time and a preset voltage jump ending time, signals transmitted by the data signal lines of the same data signal line group are changed into the preset voltage after jumping for a times from the data voltage by a preset step amount; a is more than or equal to 2, and a is an integer.

13. The touch display panel according to claim 1, wherein when at least a part of the signals transmitted by the data signal lines are not transitioned to the data voltage in the third phase, the third phase includes q data voltage transition termination times; the data signal lines form q data signal line groups; q is not less than 2 and is an integer;

signals transmitted by the data signal lines in the same group of data signal line groups jump to the data voltages at the same data voltage jump termination time; and signals transmitted by the data signal lines of different data signal line groups jump to the data voltages at different data voltage jump termination moments.

14. The touch display panel of claim 13, wherein the signals transmitted by the data signal lines in the same data signal line group jump from the preset voltage to the data voltage at the same data voltage jump termination time.

15. The touch display panel of claim 13, wherein the third phase further comprises data voltage transition start times corresponding to the q data voltage transition end times one to one; the time length between the data voltage jump starting time and the data voltage jump ending time of each pair is a fixed value;

in a time period between a pair of data voltage transition starting time and a pair of data voltage transition ending time, signals transmitted by the data signal lines of the same data signal line group are changed into the data voltages after b times of transitions by a preset step amount from the preset voltage; b is not less than 2, and b is an integer.

16. The touch display panel according to claim 1, wherein in the first stage, when at least a part of the signals transmitted by the data signal lines are not transited to the preset voltage, in the first stage, the signals transmitted by the data signal lines are changed to the preset voltage after a-number of transitions from the data voltage by a preset step amount; a is more than or equal to 2, and a is an integer;

when at least part of signals transmitted by the data signal lines are not hopped to the data voltage in the third stage, the signals transmitted by the data signal lines are hopped for b times from the preset voltage to the data voltage in the third stage; b is not less than 2, and b is an integer.

17. The touch display panel according to claim 1, wherein when the data refresh mode of the touch display panel is the second mode, in the hold frame, all signals transmitted by the data signal lines are at a predetermined voltage.

18. A display device, comprising: the touch display panel of any one of claims 1-17.