CN113467640A

CN113467640A - Driving method and driving circuit of touch display panel and touch display device

Info

Publication number: CN113467640A
Application number: CN202110739450.2A
Authority: CN
Inventors: 邹宗骏; 许育民
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-01
Anticipated expiration: 2041-06-30
Also published as: CN113467640B

Abstract

The invention discloses a driving method, a driving circuit and a touch display device of a touch display panel, wherein the driving method comprises the following steps: providing first touch scanning signals to first touch electrodes in different touch areas in the same touch area group in a time-sharing manner, applying time overlapping of the first touch scanning signals to the first touch electrodes in different touch subareas in the same touch area group, and receiving touch detection signals fed back by the first touch electrodes in a one-to-one correspondence manner; determining whether a touch object touches the touch surface of the touch display panel according to the touch detection signal; providing first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner, providing first touch scanning signals of touch electrodes in different touch areas in the same touch area group in a time-sharing manner, and receiving touch detection signals fed back by the touch electrodes in a one-to-one correspondence manner; and determining the touch position of the touch object according to the touch detection signal. The invention can improve the problem of touch delay, thereby improving the touch detection performance.

Description

Driving method and driving circuit of touch display panel and touch display device

Technical Field

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

Background

Since touch operation is a simple and convenient man-machine interaction method, more and more products integrate a touch function into a display device. The conventional touch display device includes a plurality of touch electrodes, touch traces electrically connected to the touch electrodes in a one-to-one correspondence manner, and a touch chip electrically connected to the touch traces, where the touch traces are used to transmit touch scan signals sent by the touch chip. However, as the size of the touch display device increases, the number of touch electrodes and the number of touch traces corresponding to the touch electrodes increase, which results in more signal pins being required to be disposed in the touch chip, thereby increasing the cost of the touch display device.

In order to reduce the number of signal pins, a time-sharing driving method is generally adopted to provide touch scanning signals to the touch electrodes. However, the time-sharing driving causes a problem of touch delay, which will affect the touch detection performance.

Disclosure of Invention

The embodiment of the invention provides a driving method and a driving circuit of a touch display panel and a touch display device, which can solve the problem of touch delay and achieve the effect of improving touch detection performance.

In a first aspect, an embodiment of the present invention provides a driving method for a touch display panel, where the touch display panel includes Q touch blocks sequentially arranged along a first direction, and the same touch block includes N touch areas sequentially arranged along the first direction; the touch area comprises M touch sub-areas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in an array; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction;

the driving method includes:

providing first touch scanning signals to the first touch electrodes of different touch areas in the same touch area group in a time-sharing manner, applying time overlapping of the first touch scanning signals to the first touch electrodes of different touch subareas in the same touch area group, and receiving touch detection signals fed back by the first touch electrodes in a one-to-one correspondence manner; the time of applying the first touch scanning signal by the first touch electrodes of the touch areas with the same arrangement sequence number in different touch area groups is overlapped;

determining whether the touch object touches the touch surface of the touch display panel according to the touch detection signal fed back by each first touch electrode;

providing the first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner, providing the first touch scanning signals of the touch electrodes in different touch areas in the same touch area group in a time-sharing manner, and receiving touch detection signals fed back by the touch electrodes in a one-to-one correspondence manner;

and determining the touch position of the touch object according to the touch detection signal fed back by each touch electrode.

In a second aspect, an embodiment of the present invention further provides a driving circuit, where the driving circuit is configured to drive a touch display panel; the touch display panel comprises a plurality of Q touch areas which are sequentially arranged along a first direction, and the same touch area comprises a plurality of N touch areas which are sequentially arranged along the first direction; the same touch area comprises M touch subareas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in an array; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction;

the drive circuit includes:

the touch control driving circuit is used for providing first touch control scanning signals to the first touch control electrodes in different touch control areas in the same touch control area group in a time-sharing manner, applying time overlapping of the first touch control scanning signals to the first touch control electrodes in different touch control sub-areas in the same touch control area group, and receiving touch control detection signals fed back by the first touch control electrodes in a one-to-one correspondence manner; determining a touch area of the touch object according to the touch detection signal fed back by each first touch electrode; the time of applying the first touch scanning signal by the first touch electrodes of the touch areas with the same arrangement sequence number in different touch area groups is overlapped;

the touch control driving circuit is further used for providing the first touch control scanning signals to different touch control electrodes in the same touch control subarea in a time-sharing manner, providing the first touch control scanning signals of the touch control electrodes in different touch control areas in the same touch control area group in a time-sharing manner, and receiving touch control detection signals fed back by the touch control electrodes in a one-to-one correspondence manner; and determining the touch position of the touch object according to the touch detection signals fed back by the touch electrodes.

In a third aspect, an embodiment of the present invention further provides a touch display device, including: a touch display panel and the driving circuit of the second aspect.

In the driving method of the touch display panel provided by the embodiment of the invention, the first touch scanning signal is provided only to the first touch electrode of each touch subarea, and the touch detection signal fed back by the first touch electrode of each touch subarea is received, so as to determine whether a touch object touches the touch surface of the touch display panel; and then respectively providing a first touch scanning signal to each touch electrode of each touch subarea and receiving a touch detection signal fed back by each touch electrode to determine the touch position of a touch object on the touch surface of the display panel, compared with the prior art, in a mode of providing the first touch scanning signal to each touch electrode of each touch subarea in a time-sharing manner when determining whether the touch object touches the touch surface of the display panel, the embodiment of the invention can reduce the time required for determining whether the touch object touches the touch surface of the display panel by only providing the first touch scanning signal to the first touch electrode of each touch subarea when determining whether the touch object touches the touch surface of the display panel, thereby improving the problem of touch delay and the touch report rate on the premise of higher touch detection accuracy, and improving the touch sensitivity of the touch display panel when the touch display panel is applied to a vehicle, thereby improving the safety and reliability of the vehicle.

Drawings

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

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

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

fig. 4 is a flowchart of a driving method of a touch display panel according to an embodiment of the present invention;

FIG. 5 is a timing diagram illustrating a driving method corresponding to the touch display panel shown in FIG. 3;

FIG. 6 is a timing diagram of another driving method corresponding to the touch display panel provided in FIG. 3;

fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;

fig. 9 is a schematic partial structure diagram of a touch display panel according to an embodiment of the present invention;

fig. 10 is a schematic diagram illustrating a partial film structure of a touch display panel according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention;

FIG. 12 is a timing diagram of another touch display panel according to an embodiment of the present invention;

FIG. 13 is a timing diagram illustrating a driving sequence of another touch display panel according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a touch display panel provided with a driving circuit according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of another touch display panel provided with a driving circuit according to an embodiment of the invention;

fig. 16 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a touch display device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.

Fig. 1 is a schematic structural diagram of a touch display panel in the prior art. As shown in fig. 1, the conventional touch display panel includes a plurality of touch areas, for example, four touch areas (a1 ', a 2', A3 'and a 4'), each of which includes two types of touch electrodes a and B that receive touch scan signals in a time-sharing manner; at this time, it is not necessary to set a corresponding touch signal output/reception terminal for each touch electrode, that is, one touch electrode a and one touch electrode B may share one touch signal output/reception terminal, so that the number of terminals in the touch driving chip may be reduced, which is beneficial to reducing the cost.

For example, fig. 2 is a driving timing diagram of a touch display panel in the prior art, and with reference to fig. 1 and fig. 2, when performing touch scanning on each touch electrode, touch scanning may be performed on the touch electrode a of each touch area a1 ', a 2', A3 ', and a 4' in sequence, and then touch scanning may be performed on the touch electrode B of each touch area a1 ', a 2', A3 ', and a 4' in sequence, so that each touch frame may be divided into two touch subframes MUXa and MUXb; scanning the touch electrode A in the touch area A1' at the first moment of the touch subframe MUXa; scanning the touch electrode A in the touch area A2' at the second moment of the touch subframe MUXa; scanning the touch electrode A in the touch area A3' at the third moment of the touch subframe MUXa; scanning the touch electrode A in the touch area A4' at the fourth moment of the touch subframe MUXa; scanning a touch electrode B in a touch area A1' at a first moment of a touch subframe MUXb; scanning the touch electrode B in the touch area A2' at the second moment of the touch subframe MUXb; scanning the touch electrode B in the touch area A3' at the third moment of the touch subframe MUXb; scanning the touch electrode B in the touch area A4' at the fourth moment of the touch subframe MUXb; and the touch detection signal fed back by each touch electrode (A or B) is received while each touch electrode (A or B) is scanned.

Generally, when detecting a touch position of a touch object on a touch surface of a touch display panel, scanning all touch electrodes to determine whether the touch surface of the touch display panel has the touch object according to a touch detection signal fed back by each touch electrode; when a touch object exists on the touch surface of the touch display panel, scanning all the touch electrodes again so as to determine the position of the touch object touching the touch surface of the touch display panel according to the touch detection signals fed back by all the touch electrodes; thus, the touch position of the touch object touching the touch surface of the touch display panel can be determined only by the touch detection signals fed back by the touch electrodes of at least two touch frames, namely four touch subframes.

However, since the touch scanning is performed periodically during the display period of the touch display panel, when the touch object touches the touch surface of the touch display panel, the touch object may miss the touch position where the touch object touches the touch surface of the touch display panel, and it is necessary to enter the next period to detect whether there is any touch object touching the touch surface of the touch display panel. With continuing reference to fig. 1 and fig. 2, when the touch area of the touch area is the touch area a2 ', and the scanning stage of the touch electrode B of the touch area A3' has been entered, the detection of the touch object is missed, and at least the time T1 'is missed, that is, whether the touch object touches the touch surface of the touch display panel is not detected in the first touch frame, the next touch frame needs to be entered, and after the respective touch electrodes (a and B) are scanned again, the touch object can be detected to touch the touch surface of the touch display panel, that is, the time T2' is required for detecting that the touch object touches the touch surface of the touch display panel; when detecting that a touch object touches the touch surface of the display panel, entering a next touch frame, scanning each touch electrode (A and B) and receiving a touch detection signal fed back by each touch electrode to realize fine scanning of the touch position of the touch object, wherein the time required by the fine scanning is T3'; and finally, according to the touch detection signals fed back by the touch electrodes received in the fine scanning process, the touch position of the touch object can be determined. Thus, in the prior art, the time required from the touch surface of the touch object touching the display panel to the detection of the touch position of the touch object is T1 ' + T2 ' + T3 ' + T4 ' + T1 ' +2T0 ' + T4 ', where T0 ' is the time of the touch sub-frame MUXa or the time of the touch sub-frame MUXb, i.e., the time delayed from the determination of the touch position by T1 ' +2T0 ' + T4 ', and the delay time is long, so that the touch hit rate is low, which affects the touch detection performance. When the touch display panel is applied to a vehicle, too slow touch response may deteriorate the sensitivity of the operation of the device in the vehicle, thereby affecting the safety of the use of the whole vehicle.

In order to solve the above technical problem, an embodiment of the present invention provides a driving method, a driving circuit and a touch display device for a touch display panel, where the touch display panel includes Q touch zones sequentially arranged along a first direction, and a same touch zone includes N touch zones sequentially arranged along the first direction; the touch area comprises M touch subareas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in arrays; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction. The driving method of the touch display panel comprises the following steps: providing first touch scanning signals to first touch electrodes in different touch areas in the same touch area group in a time-sharing manner, applying time overlapping of the first touch scanning signals to the first touch electrodes in different touch subareas in the same touch area group, and receiving touch detection signals fed back by the first touch electrodes in a one-to-one correspondence manner; time overlapping of applying first touch scanning signals to first touch electrodes of touch areas with the same arrangement sequence number in different touch area groups is achieved; determining whether a touch object touches the touch surface of the touch display panel according to the touch detection signals fed back by the first touch electrodes; providing first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner, providing first touch scanning signals of touch electrodes in different touch areas in the same touch area group in a time-sharing manner, and receiving touch detection signals fed back by the touch electrodes in a one-to-one correspondence manner; and determining the touch position of the touch object according to the touch detection signal fed back by each touch electrode.

By adopting the technical scheme, the touch screen display panel determines whether the touch surface of the touch object touch display panel exists or not by only providing the first touch scanning signal to the first touch electrode of each touch subarea and receiving the touch detection signal fed back by the first touch electrode of each touch subarea; and then respectively providing a first touch scanning signal to each touch electrode of each touch subarea and receiving a touch detection signal fed back by each touch electrode to determine the touch position of a touch object on the touch surface of the display panel, compared with the prior art, in a mode of providing the first touch scanning signal to each touch electrode of each touch subarea in a time-sharing manner when determining whether the touch object touches the touch surface of the display panel, the embodiment of the invention can reduce the time required for determining whether the touch object touches the touch surface of the display panel by only providing the first touch scanning signal to the first touch electrode of each touch subarea when determining whether the touch object touches the touch surface of the display panel, thereby improving the problem of touch delay and the touch report rate on the premise of higher touch detection accuracy, and improving the touch sensitivity of the touch display panel when the touch display panel is applied to a vehicle, thereby improving the safety and reliability of the vehicle.

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 structural diagram of a touch display panel according to an embodiment of the present invention, and fig. 4 is a flowchart of a driving method of a touch display panel according to an embodiment of the present invention. Referring to fig. 3, the touch display panel 100 includes Q touch zones a0 arranged in sequence along the first direction X, and the same touch zone a0 includes N touch zones arranged in sequence along the first direction X, for example, each touch zone a0 includes 4 touch zones (1, 2, 3, and 4); the touch area includes M touch sub-areas AA arranged along the second direction Y (each touch area includes two touch sub-areas AA shown in the figure by way of example only); the same touch subarea AA comprises K x P touch electrodes arranged in an array; for example, each touch sub-area AA may include two touch electrodes a and B; the K × P touch electrodes in the same touch subarea AA include a first touch electrode, which may be a touch electrode a or a touch electrode B; k is less than or equal to the maximum number of touch electrodes covered by the contact area of the touch object and the touch display panel 100 in the first direction X, and P is less than or equal to the maximum number of touch electrodes covered by the contact area of the touch object and the touch display panel 100 in the second direction Y; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction X intersects the second direction Y; the touch object may be, for example, a touch object, a stylus, or the like.

It should be noted that fig. 3 is only an exemplary diagram of the embodiment of the present invention, and fig. 3 only illustrates two touch zone groups a01 and a02 in a touch display panel, where the touch display panel may include one or more touch zone groups in the embodiment of the present invention; meanwhile, each touch area group in fig. 3 outputs only four touch areas (1, 2, 3, and 4) by way of example, but the number of touch areas is not limited thereto in the embodiment of the present invention; in addition, fig. 3 exemplarily shows two touch sub-areas AA in each touch area, but the embodiment of the present invention does not specifically limit the number of touch sub-areas in each touch sub-area AA; correspondingly, each touch sub-area AA shown in fig. 3 includes two touch electrodes a and B, and on the premise that the above numerical requirements of K and P are met, the number of touch electrodes in the touch sub-area AA is not specifically limited in the embodiment of the present invention.

Referring to fig. 3, the touch display panel 100 includes a touch area group a01 and a touch area group a 02. Taking the touch area group a01 as an example, the touch area group a01 includes four touch areas, namely a first touch area 1, a second touch area 2, a third touch area 3 and a fourth touch area 4, which are sequentially arranged; each touch area (1, 2, 3 or 4) comprises 2 touch sub-areas AA arranged along the second direction Y; when the maximum number of touch electrodes (A, B) covered by the contact area S of the touch object and the touch surface of the touch display panel in the first direction X is 2 and the maximum number of touch electrodes (A, B) covered in the second direction Y is 3, each touch subarea AA comprises two touch electrodes a and B arranged in the second direction Y, namely, the number K P of touch electrodes (a and B) in each touch subarea AA is equal to 2; thus, no matter where the touch area of the touch object is, the touch area of the touch object must cover at least one touch electrode a and at least one touch electrode B.

It is understood that the touch electrodes in the touch display panel 100 in the embodiment may be self-capacitance touch electrodes or mutual capacitance touch electrodes, which is not limited herein and can be set by those skilled in the art according to the actual situation. If the touch electrode is a self-capacitance touch electrode, the working process is as follows: each touch electrode corresponds to a determined coordinate position, and the touch electrodes respectively form capacitance with the ground, when a touch object touches the touch surface of the touch display panel, the capacitance of the touch object is superposed on the touch electrodes covered by the touch area, so that the capacitance to the ground of the touch electrodes covered by the touch object changes, namely the touch detection signals fed back by the touch electrodes change, therefore, by detecting the touch detection signals fed back by the touch electrodes in each touch area, which touch electrode has changed capacitance to the ground can be determined, and then the specific touch position of the touch object can be determined according to the coordinate value corresponding to the touch electrode with changed capacitance to the ground. If the touch electrode is a mutual capacitance type touch electrode, the working process is as follows: the mutual capacitance type touch control electrode comprises a touch control driving electrode and a touch control detection electrode, wherein projections between the touch control driving electrode and the touch control detection electrode are overlapped, a capacitor is formed at a position where the two groups of electrodes are crossed, and when a touch object touches the touch control display panel, the coupling capacitance between the two electrodes near a touch point is influenced, namely the capacitance between the two electrodes is changed. When the capacitance is detected, the touch driving signals are sequentially sent to the touch driving electrodes, and all the touch detection electrodes receive the touch detection signals at the same time, so that the capacitance of the intersection point of all the touch driving electrodes and the touch detection electrodes, namely the capacitance of the two-dimensional plane of the whole touch display panel, can be obtained. According to the two-dimensional capacitance variation data of the touch display panel, the coordinate value of each touch point can be calculated, and then the touch position of the touch object and the touch area can be determined. Optionally, when the touch electrode is a mutual capacitance type touch electrode, the touch driving electrode and the touch detecting electrode in the mutual capacitance type touch electrode may be insulated on the same layer, or may be located on different film layers, which is not specifically limited in this embodiment.

Referring to fig. 4, a driving method of a touch display panel according to an embodiment of the present invention includes:

s110, providing first touch scanning signals to the first touch electrodes in different touch areas in the same touch area group in a time-sharing manner, applying time overlapping of the first touch scanning signals to the first touch electrodes in different touch subareas in the same touch area group, and receiving the touch detection signals fed back by the first touch electrodes in a one-to-one correspondence manner.

And the time of applying the first touch scanning signals by the first touch electrodes of the touch areas with the same arrangement sequence number in different touch area groups is overlapped.

And S120, determining whether a touch object touches the touch surface of the touch display panel according to the touch detection signals fed back by the first touch electrodes.

For example, fig. 5 is a timing diagram of a driving method corresponding to the touch display panel provided in fig. 3. With reference to fig. 3 and fig. 5 in combination, taking the touch electrode a in the touch display panel shown in fig. 3 as the first touch electrode, providing the first touch scan signal to the first touch electrodes in different touch areas in the same touch area group in a time-sharing manner, that is, performing touch scan on the touch electrodes a in the four touch areas (1, 2, 3, and 4) in sequence, and scanning the touch electrode a in the first touch area 1 at a first time; scanning the touch electrode A in the second touch area 2 at a second moment; scanning the touch electrode A in the third touch area 3 at a third moment; at the fourth moment, the touch electrodes a in the fourth touch area 4 are scanned, and while the touch electrodes a are scanned, the touch detection signals fed back by the touch electrodes a are received one by one. The touch signal detection time in this process is T2, that is, the first touch scan signals are provided to the first touch electrodes in different touch areas in the same touch area group in a time-sharing manner, so that the number of detection signals fed back from the touch electrodes in the touch areas is reduced, and the touch detection signals are roughly detected. The touch area of the touch object on the touch surface of the touch display panel 100 covers the touch electrode a and the touch electrode B of the same touch subarea AA of the second touch area 2; at this time, whether a touch object touches the touch surface of the touch display panel 100 can be determined only according to the touch detection signal fed back by the first touch electrode a in each touch area (1, 2, 3, and 4); thus, the time required for detecting whether a touch object touches the touch surface of the touch display panel 100 is T2, and the time T2 is only half of the time T2' required in the prior art in fig. 2, so that the problem of touch delay can be solved, and the touch detection performance can be improved; and the time overlapping of applying the first touch scanning signals by the first touch electrodes of different touch subareas in the same touch area is set, so that the touch detection precision can be improved, meanwhile, the wiring can be reduced, the process steps can be simplified, and the preparation efficiency of the touch display panel can be improved.

It should be noted that the touch electrode B in the touch display panel may also be selected as the first touch electrode for touch signal detection, and is not limited herein.

Wherein, the time of applying the first touch scanning signals to the first touch electrodes of the touch areas with the same arrangement sequence number in different touch area groups is overlapped, that is, the first touch scanning signals can be simultaneously applied to each first touch electrode of the first touch area 1 in the touch area group A01 and each first touch electrode of the first touch area 1 in the touch area group A02, simultaneously applying a first touch scan signal to each first touch electrode of the second touch area 2 in the touch area group a01 and each first touch electrode of the second touch area 2 in the touch area group a02, simultaneously applying a first touch scan signal to each first touch electrode of the third touch area 3 in the touch area group a01 and each first touch electrode of the third touch area 3 in the touch area group a02, the first touch scan signals are simultaneously applied to the respective first touch electrodes of the fourth touch area 4 in the touch area group a01 and the respective first touch electrodes of the fourth touch area 4 in the touch area group a 02.

S130, providing the first touch scanning signals to the different touch electrodes in the same touch sub-area in a time-sharing manner, providing the first touch scanning signals to the touch electrodes in the different touch areas in the same touch zone group in a time-sharing manner, and receiving the touch detection signals fed back by the touch electrodes in a one-to-one correspondence manner.

When it is determined that there is a touch object touching the touch surface of the touch display panel, the fine scanning of each touch electrode in the touch display panel can be directly performed, that is, the accurate touch signal detection is performed on all the touch electrodes in all the touch areas, so as to further determine the position coordinates of the touch surface of the touch display panel touched by the touch object.

Specifically, as shown in fig. 3 and fig. 5, when determining the position coordinate of the touch surface of the touch display panel touched by the touch object, all the touch electrodes a and B in all the touch areas in the touch display panel 100 need to be scanned, and the detection time of the touch signal in this process is T3, that is, in the stage T3, the touch electrodes a in each of the touch areas 1, 2, 3, and 4 may be sequentially subjected to touch scanning first, and then the touch electrodes B in each of the touch areas 1, 2, 3, and 4 may be sequentially subjected to touch scanning, so that each touch frame may be divided into two touch subframes MUXa and MUXb; scanning a touch electrode A in a touch area 1 at a first moment of a touch subframe MUXa; scanning the touch electrode A in the touch area 2 at the second moment of the touch subframe MUXa; scanning the touch electrode A in the touch area 3 at the third moment of the touch subframe MUXa; scanning the touch electrode A in the touch area 4 at the fourth moment of the touch subframe MUXa; scanning a touch electrode B in a touch area 1 at a first moment of a touch subframe MUXb; scanning the touch electrode B in the touch area 2 at the second moment of the touch subframe MUXb; scanning the touch electrode B in the touch area 3 at the third moment of the touch subframe MUXb; scanning the touch electrode B in the touch area 4 at the fourth moment of the touch subframe MUXb; and when scanning each touch electrode (A or B), receiving the touch detection signal fed back by each touch electrode (A or B) in a one-to-one correspondence manner.

When the touch electrodes are mutual capacitance type touch electrodes, touch driving electrodes and touch detecting electrodes in the mutual capacitance type touch electrodes can be arranged in a same layer in an insulating mode or in different film layers. The present embodiment is not particularly limited.

And S140, determining the touch position of the touch object according to the touch detection signals fed back by the touch electrodes.

For example, as shown in fig. 3 and fig. 5, after the fine scanning at the stage T3, the stage T4 is entered, that is, the data processing and touch position determining stages, and since the touch detection signals fed back at the stage T3 are only some changes and differences of capacitance, some processing and operations are required, that is, data processing and operations are performed on the touch detection signals fed back by the touch electrodes of the touch areas, so as to accurately determine the touch position.

Compared with the prior art, in the embodiment, the first touch scanning signal is provided only to the first touch electrode of each touch area, and the touch detection signal fed back by each first touch electrode is received, it can be determined whether there is a touching object touching the touch display panel, and when there is a touching object touching the touch display panel, the touch position of the touch object touching the touch display panel can be further determined through the touch detection signals fed back by all the touch electrodes in all the touch areas, so as to reduce the time required for detecting the touch object on the premise of accurately determining the touch position of the touch object, thereby improving the touch point reporting rate of the touch display panel and solving the problem of long touch delay time, and when the touch display panel is applied to a vehicle, the touch sensitivity of the touch display panel can be improved, and the safety and the reliability of the vehicle are further improved.

Optionally, with reference to fig. 3, the touch sub-area further includes a second touch electrode, and when the first touch scan signal is provided to different touch electrodes in the same touch sub-area in a time-sharing manner, the time when the second touch electrode receives the first touch scan signal is after the time when other touch electrodes receive the first touch scan signal; at this time, if the touch area of the touch object overlaps with the lth touch area of the same touch area group and does not overlap with the L +1 th touch area, before the first touch scan signal is provided to the first touch electrodes of different touch areas in the same touch area group in a time-sharing manner, the touch method further includes: providing first touch scanning signals to M second touch electrodes of at least part of the L +1 th touch area to the Nth touch area in a time-sharing manner; wherein L is less than N, and L is a positive integer.

For example, with continued reference to fig. 3, the touch sub-area AA further includes a second touch electrode, for example, the first touch electrode is a touch electrode a, and the second touch electrode is a touch electrode B. The touch scanning process of the touch display panel is performed periodically, and according to the distribution of the touch electrodes a and the touch electrodes B, touch scanning is performed on all the touch electrodes a and the touch electrodes B in each touch area of the touch display panel 100 in sequence. For example, when the touch area S of the touch object overlaps with the second touch area 2 of the same touch area group and does not overlap with the third touch area 3, and the touch area S of the touch object overlaps with both the touch electrode a and the touch electrode B of one touch sub-area AA in the second touch area 2 of the touch display panel, if the stage of providing the first touch scan signal to each second touch electrode B of the third touch area 3 happens, so that it just misses the scanning of the second touch electrode B of the second touch area 2 covered by the touch area of the touching object, so that it cannot be detected whether there is a touching object touching the touch surface of the touch display panel in the current touch subframe MUXB, and at this time, it is necessary to enter a stage of scanning the first touch electrodes a of the touch areas (1, 2, 3, and 4) to detect whether there is a touching object touching the touch surface of the touch display panel.

For example, when the refresh frequency of the touch display panel is 60Hz and the touch hit is 120Hz, the touch hit delay time in the prior art is at least:

T’＝T1’+T2’+T3’+T4’＝8.3/2/5*4+8.3+8.3+4＝24ms；

in the embodiment of the present invention, referring to fig. 5, only the touch electrode a is detected at T2, so that the touch hit delay time in the present invention is:

T＝T1+T2+T3+T4＝8.3/2/5*4+8.3/2+8.3+4＝20ms；

therefore, T1 is the same as T1 ' in the prior art, T3 is the same as T3 ' in the prior art, and T4 is the same as T4 ' in the prior art, and the time T2 required in the T2 stage is reduced by half compared with the prior art; therefore, compared with the prior art, the time required for completing the whole process of touch position determination is reduced, the problem of touch delay is solved, and the effect of touch detection performance is improved; when the touch display panel is applied to a vehicle, the sensitivity of corresponding equipment can be improved, and the use safety of the whole vehicle is further improved.

It can be understood that, in the driving timing shown in fig. 5, the first touch electrode a and the second touch electrode B are different touch electrodes. In the embodiment of the present invention, the first touch electrode and the second touch electrode in the touch sub-area may also be the same touch electrode.

For example, fig. 6 is a timing diagram of another driving method corresponding to the touch display panel provided in fig. 3, where fig. 6 and fig. 5 are the same as each other, reference may be made to the description of fig. 5 above, and only the difference between fig. 6 and fig. 5 is exemplarily described herein. Referring to fig. 3 and fig. 6, the first touch electrode and the second touch electrode of the same touch sub-area AA are both touch electrodes B. When the touch area S of the touch object overlaps with the second touch area 2 of the same touch area group and does not overlap with the third touch area 3, and the touch area S of the touch object overlaps with both the touch electrode a and the touch electrode B of one touch subarea AA in the second touch area 2 of the touch display panel, if the stage of providing the first touch scan signal to each touch electrode B of the third touch area 3 happens, the stage just misses the scan of the touch electrode B of the second touch area 2 covered by the touch area of the touch object, and thus whether the touch object touches the touch surface of the touch display panel cannot be detected in the current touch subframe MUXB; at this time, the next touch subframe MUXB may be entered, and the touch electrodes B in each touch area (1, 2, 3, and 4) are continuously scanned, so as to determine whether there is a touch object touching the touch surface of the touch display panel according to the touch detection signal fed back by each touch electrode B in the current touch subframe MUXB.

It should be noted that fig. 3 only illustrates that the same touch sub-area AA of the touch display panel includes 2 × 1 array touch electrodes, that is, the touch electrode a and the touch electrode B, as an embodiment, on the premise that the numerical requirement of K × P is satisfied, each touch sub-area may include more touch electrodes, which is not listed here. For example, fig. 7 is a schematic structural diagram of another touch display panel provided in an embodiment of the present invention, and the same points in fig. 7 as those in fig. 3 refer to the description of fig. 3, which is not repeated herein, and only the differences in fig. 7 from fig. 3 are exemplarily described herein. As shown in fig. 7, the maximum number of touch electrodes covered by the touch area of the touching object in the first direction X is 3, and the maximum number of touch electrodes covered in the second direction Y is 3; at this time, the values of K and P may both be 2, that is, each touch subarea AA may include four touch electrodes A, B, C and D, and any touch position of the touch object on the touch surface of the touch display panel covers at least one touch electrode a, at least one touch electrode B, at least one touch electrode C, and at least one touch electrode D, and at this time, scanning only one touch electrode of each touch subarea can also determine whether there is a touch object. For convenience of description, the following describes an exemplary embodiment of the present invention by taking an example in which each touch sub-area includes 2 × 1 touch electrodes arranged in an array.

Optionally, the driving method of the touch display panel includes a plurality of image frames; the same image frame comprises a plurality of touch driving stages; the touch driving stage comprises K touch subframes.

Specifically, one image frame is the time required for displaying one image frame, the touch electrode can be scanned during the period of displaying one image frame, and the period of displaying one image frame can include a plurality of touch driving stages, each touch driving stage is a touch cycle to have a higher touch report rate; each touch driving stage comprises K touch subframes for respectively performing touch scanning on different touch electrodes in the same touch subarea.

Illustratively, referring to fig. 3 and 5 in combination, one image frame includes two touch driving stages, each including two touch subframes, in which touch electrodes a of different touch areas (1, 2, 3, and 4) are touch-scanned in a time-sharing manner, and in which touch electrodes B of different touch areas (1, 2, 3, and 4) are touch-scanned in a time-sharing manner.

Accordingly, when the touch electrode a of each touch subarea AA is a first touch electrode, the stage of time-sharing supplying the first touch scan signal to the first touch electrode a of the different touch areas (1, 2, 3 and 4) in the same touch zone group (a01 or a02) should be a touch subframe, and at this time, the first touch scan signal may be supplied to the first touch electrode a of the different touch areas (1, 2, 3 and 4) of the same touch zone group (a01 or a02) in a one-to-one correspondence manner, and the time-overlapping of the first touch scan signal may be applied to the first touch electrode a of the different touch subarea AA of the same touch area group (1, 2, 3 and 4) in a one-to-one correspondence manner, and the touch detection signal fed back by each first touch electrode a may be received, that is time-sharing supplying the first touch scan signal to the touch electrodes a of the first touch area 1, the second touch area 2, the third touch area 3 and the fourth touch area 4 in the touch zone group a01 in a one touch subframe MUXa, receiving touch detection signals fed back by the touch electrodes a, and providing the first touch scanning signals to the touch electrodes a in the first touch area 1 with overlapping time, that is, providing the first touch scanning signals to the touch electrodes a in the first touch area 1 at the same time; similarly, the first touch scan signal is provided to each touch electrode a in the second touch area 2, the first touch scan signal is provided to each touch electrode a in the third touch area 3, and the first touch scan signal is provided to each touch electrode a in the fourth touch area 4.

In addition, for the stage of providing the first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner and providing the first touch scanning signals of the touch electrodes in different touch areas in the same touch area group in a time-sharing manner, the stage is a touch driving stage which comprises two touch subframes MUXa and MUXb; at this time, the first touch scanning signals are provided to the different touch electrodes (a and B) in the same touch subarea AA in a time-sharing manner, the first touch scanning signals of the touch electrodes (a and B) in the different touch areas (1, 2, 3, and 4) in the same touch area group (a01 or a02) in the time-sharing manner are provided, and the touch detection signals fed back by the touch electrodes (a and B) are received in a one-to-one correspondence manner, so that the touch position of the touch object can be accurately determined according to the touch detection signals fed back by the touch electrodes (a and B).

Optionally, the touch display panel may further include a plurality of first gate circuits, and each first gate circuit includes a plurality of first switch units; the first ends of different first switch units of the same first gating circuit are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; the second ends of different first switch units of the same first gating circuit are electrically connected with the same touch terminal; the first switch units of different first gating circuits are electrically connected with different touch terminals; in a touch subframe, controlling one first switch unit of each first gating circuit to be conducted, and controlling other first switch units to be closed; and providing a first touch scanning signal to a touch terminal electrically connected with a first gating circuit corresponding to the touch electrodes in different touch areas of the same touch zone group in a time-sharing manner, so that the first touch scanning signal is transmitted to the corresponding touch electrode through the conducted first switch unit.

For example, fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the present invention, and referring to fig. 8, the first switch unit 211 may include a transistor, a MOS transistor, or other devices capable of implementing an off function and an on function. When one touch sub-area AA includes one touch electrode a and one touch electrode B, one first gating circuit 210 may include two first switch units 211(2111 and 2112), a control terminal of each first switch unit 211 is electrically connected to one gating control line, a gating control signal transmitted through the gating control line controls the on or off of the first switch unit 211, the first switch units 211 with the same arrangement sequence number in different first gating circuits 210 may share the gating control line, and the two first switch units 211 of the same first gating circuit 210 are electrically connected to different gating control lines. For example, the control terminal of the first switch unit 2111 is electrically connected to the gate control line SWA, and the control terminal of the first switch unit 2112 is electrically connected to the gate control line SWB; first ends of the

first switch units

2111 and 2112 are electrically connected to the same touch terminal RX, a second end of the first switch unit 2111 is electrically connected to the touch electrode a, a second end of the first switch unit 2112 is electrically connected to the touch electrode B, each first switch unit 2111 electrically connected to each touch electrode a is a first switch unit with the same arrangement number, and each first switch unit 2111 electrically connected to each touch electrode B is a first switch unit with the same arrangement number. Therefore, the number of the touch terminals can be reduced by enabling the two touch electrodes a and B to share one touch terminal, which is beneficial to the low cost of the touch display panel, and the number of the gate control lines can be reduced by enabling the first switch units 211 with the same arrangement serial number in each first gate circuit 210 to share the gate control lines, which is beneficial to the narrow frame of the touch display panel.

Therefore, in a touch subframe, one first switch unit of each first gating circuit can be controlled to be switched on, and other first switch units are controlled to be switched off; and providing a first touch scanning signal to a touch terminal electrically connected with a first gating circuit corresponding to the touch electrodes in different touch areas of the same touch zone group in a time-sharing manner, so that the first touch scanning signal is transmitted to the corresponding touch electrode through the conducted first switch unit.

Specifically, within a touch subframe MUXA, a first touch scan signal is sequentially provided to the touch electrodes a in the touch areas (1, 2, 3, and 4) in the same touch area group a 0; at this time, in the first stage of the touch sub-frame MUXA, the gate control line SWA outputs an active level, the first switch unit 2111 in the first gate circuit 210 is turned on, the first switch unit 2112 is turned off, and the touch terminals RX11 and RX12 provide the first touch scan signal, which is respectively transmitted to the touch electrodes a of different touch sub-areas AA in the touch area 1 through the first switch unit 2111 electrically connected to the touch terminals RX11 and RX 12; in the second phase of the touch sub-frame MUXA, the gate control line SWA outputs an active level, the first switch unit 2111 in the first gate circuit 210 is turned on, the first switch unit 2112 is turned off, and the touch terminals RX21 and RX22 provide first touch scan signals, which are respectively transmitted to the touch electrodes a of different touch sub-areas AA in the touch area 2 through the first switch unit 2111 electrically connected to the touch terminals RX21 and RX 22; in the third phase of the touch sub-frame MUXA, the gate control line SWA outputs an active level, the first switch unit 2111 in the first gate circuit 210 is turned on, the first switch unit 2112 is turned off, and the touch terminals RX31 and RX32 provide first touch scan signals, which are respectively transmitted to the touch electrodes a of different touch sub-areas AA in the touch area 3 through the first switch unit 2111 electrically connected to the touch terminals RX31 and RX 32; in the fourth phase of the touch sub-frame MUXA, the gate control line SWA outputs an active level, the first switch unit 2111 in the first gate circuit 210 is turned on, the first switch unit 2112 is turned off, and the touch terminals RX41 and RX42 provide the first touch scan signals, which are respectively transmitted to the touch electrodes a of different touch sub-areas AA in the touch area 4 through the first switch unit 2111 electrically connected to the touch terminals RX41 and RX 42.

Accordingly, during the touch sub-frame MUXB, the gate control line SWB outputs an active level, the first switch unit 2112 in the first gate circuit 210 is turned on, and the first switch unit 2111 is turned off, at which time the first touch scan signals are sequentially provided to the touch electrodes B of the

touch areas

1, 2, 3, and 4 according to the sequence of providing the first touch scan signals to the touch terminals RX11, RX12, RX21, RX22, RX31, RX32, RX41, and RX 42.

It can be understood that the number of the first gating circuits disposed in the display panel is related to the number of the touch areas in the display panel and the number of the touch sub-areas in the touch areas, and the number of the first switch units in the first gating circuits is related to the number of the touch electrodes in the touch sub-areas.

Optionally, there is a certain coupling between the adjacent touch electrodes, which affects the touch accuracy. At this time, in the same touch subarea, when the first touch scanning signal is provided to one of the touch electrodes, the second touch scanning signal can be provided to the other touch electrodes; the first touch scanning signal is different from the second touch scanning signal.

For example, referring to fig. 3 and 4, when a first touch scan signal is provided to a touch electrode a in a touch subarea AA, a second touch scan signal is provided to a touch electrode B in the touch subarea AA, so that the touch electrode a and the touch electrode B receive the corresponding touch scan signals, and the first touch scan signal received by the touch electrode a is not coupled to the touch electrode B, so as to prevent the signal coupling from affecting the touch detection accuracy; meanwhile, the first touch scanning signal and the second touch scanning signal are different signals, that is, at least one of the frequencies and amplitudes of the first touch scanning signal and the second touch scanning signal is different, so that the second touch scanning signal does not affect the detection of the touch detection signal fed back by the touch electrode receiving the first touch scanning signal.

Optionally, the touch display panel 1 further includes a plurality of second gating circuits, and each second gating circuit includes a plurality of second switch units; the first ends of different second switch units of the same second gating circuit are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; the second terminals of different second switch units of the same second gating circuit are electrically connected with the same common terminal.

For example, fig. 9 is a schematic partial structure diagram of a touch display panel according to an embodiment of the present invention. As shown in fig. 9, taking a touch sub-area AA as an example, the touch sub-area AA corresponds to a second gating circuit 220 in addition to a first gating circuit 210. Similarly, when the touch sub-area AA includes two touch electrodes a and B, the second gating circuit 220 correspondingly includes two second switch units 221; the control ends of different second switch units 221 of the same second gating circuit 220 are electrically connected with different gating control lines, the gating control signals transmitted through the gating control lines control the on or off of each switch unit 221, and the switch units 221 with the same arrangement serial number in different second gating circuits 220 can share the gating control lines, so that wiring is reduced, and the narrow frame of the touch display panel is facilitated. Wherein the control terminal of the second switch unit 2211 is electrically connected to the gate control line SW1, and the control terminal of the second switch unit 2212 is electrically connected to the gate control line SW2, so that the gate control lines SW1 and SW2 can respectively control the on or off of two second switch units (2211 and 2212) in the same second gate circuit 220; meanwhile, a first end of the second switch unit 2211 is electrically connected to the touch electrode a, a first end of the second switch unit 2212 is electrically connected to the touch electrode B, and a second end of the second switch unit 2211 and a second end of the second switch unit 2212 are electrically connected to the same common terminal VHSS.

Correspondingly, when the first touch scanning signal is provided to one of the touch electrodes in the same touch subarea, a specific method for providing the second touch scanning signal to the other touch electrodes includes: in the same touch subarea, controlling a second switch unit corresponding to the touch electrode receiving the first touch scanning signal to be closed and controlling second switch units corresponding to other touch electrodes to be switched on; and providing a second touch scanning signal to the common terminal so that the second touch scanning signal transmits each corresponding touch electrode through the conducted second switch unit.

Specifically, as shown in fig. 9, taking a touch sub-area AA as an example, when a first touch scan signal is provided to the touch electrode a, the gate control signal transmitted by the gate control line SWA controls the first switch unit 2111 to be turned on, and the gate control signal transmitted by the gate control line SWB controls the first switch unit 2112 to be turned off; meanwhile, the gate control signal transmitted by the gate control line SW1 controls the second switch unit 2211 to be turned off, and the gate control signal transmitted by the gate control line SW2 controls the second switch unit 2212 to be turned on; at this time, the first touch scan signal at the touch terminal RX is transmitted to the touch electrode a through the turned-on first switch unit 2111, and the second touch scan signal at the common terminal VHSS is transmitted to the touch electrode B through the turned-on second switch unit 2212. So that the touch electrodes a and B in the same touch subarea AA respectively receive the first touch scanning signal and the second touch scanning signal to prevent the signals on the touch electrode a and the touch electrode B from interfering with each other; similarly, the process of providing the first touch scan signal to the touch electrode B is similar to the process of providing the first touch scan signal to the touch electrode a, and is not repeated herein.

It is understood that the touch display panel in the above embodiments of the present invention may be a liquid crystal display panel, and may also be an organic light emitting display panel. In order to reduce the cost and simplify the process, in the present embodiment, the structure of the touch display panel is reused as the touch electrode, for example, when the touch display panel is a liquid crystal display panel, the common electrode of the liquid crystal display panel is reused as the touch electrode; when the touch display panel is an organic light-emitting display panel, the cathode of the organic light-emitting display panel is reused as a touch electrode; fig. 10 is a schematic diagram of a partial film structure of a touch display panel according to an embodiment of the present invention, and referring to fig. 10, the touch display panel 100 may include a liquid crystal touch display panel, where the liquid crystal touch display panel may include an array substrate 110, a color filter substrate 120, and a liquid crystal layer 130 disposed between the array substrate 110 and the color filter substrate 120; the array substrate 110 may include a first metal layer M1, a second metal layer M2, a third metal layer M3, and an insulating layer disposed between the metal layers, and the array substrate 110 may include a plurality of thin film transistors 50; the first metal layer M1 may include the gate electrode 51 of the thin film transistor 50, a scan line, etc. (not shown in the figure); the second metal layer M2 may include the source electrode 53, the drain electrode 54, and the data line of the thin film transistor 50, etc. (not shown in the figure); the third metal layer M3 may include the touch trace 30; the array substrate 110 may further include a common electrode block 70 and a pixel electrode 60, wherein the common electrode block 70 is electrically connected to the touch trace 30; the common electrode 70 is reused as the touch electrode 20.

It is understood that fig. 10 only takes the thin film transistor 50 in the touch display panel 100 as a bottom-gate thin film transistor as an example, but does not limit the present application, and in other alternative embodiments, the thin film transistor 50 may also be a top-gate thin film transistor. In addition, in fig. 10, the common electrode blocks 70(20) and the touch traces 30 are electrically connected by a crossover, but the present application is not limited thereto, and a person skilled in the art can set the connection according to actual conditions of products. It should be noted that the liquid crystal touch display panel 100 provided in this embodiment can be applied to liquid crystal touch display panels of TN mode, FFS mode, IPS mode, and the like. Fig. 10 only takes the touch display panel 100 as an lcd touch display panel, and the common electrode 70 is located below the film layer where the pixel electrode 60 is located, but the disclosure is not limited thereto, and those skilled in the art can select the type of the touch display panel and set the specific structure and connection relationship of the touch display panel according to practical situations.

In addition, when the touch display panel can also be an organic light emitting display panel, the cathode of the organic light emitting display panel is reused as a touch electrode; meanwhile, the touch chip and the display chip are integrated into the same chip, and the chip provides a common voltage signal and a touch scanning signal to the common electrode (or the cathode) in a time-sharing manner in the display driving stage and the touch driving stage. The case of the display and touch time-sharing driving will be described in detail below.

Optionally, fig. 11 is a schematic structural diagram of another touch display panel provided in the embodiment of the present invention, and fig. 12 is a timing diagram of another touch display panel provided in the embodiment of the present invention. As shown in fig. 11-12, the touch display panel 100 further includes a display area VA; the display area VA includes at least one display cell row 40; the display cell row 40 includes a plurality of display cells AA0 arranged in sequence along the first direction X; the image frame further comprises a display driving phase P; at this time, the driving method of the touch display panel 100 further includes, during the display driving phase P, performing display driving on the display units AA0 in the display area VA, and at this time, sequentially providing scanning signals to each row of display units, and writing the data signals into each display unit AA0 in a one-to-one correspondence manner, so as to control the display units AA0 to display light with corresponding brightness and color, so that the touch display panel 100 displays a corresponding image.

Specifically, referring to fig. 10-12 in combination, when the common electrode 70 is reused as a touch electrode, touch and display time-sharing driving is required, that is, a first touch scan signal is applied to the touch electrode in the touch area in a one-to-one time-sharing manner in the multiple touch driving stages C of each touch subframe, that is, the signal received by the common electrode 70(20) is the first touch scan signal; in the display driving phase P, the display unit AA0 in the display area VA is driven to display, that is, the signal received by the common electrode 70(20) is a common voltage signal. In this embodiment, the common electrode of the display panel is reused as the touch electrode; meanwhile, the touch chip and the display chip are integrated into the same chip, the chip can provide a common voltage signal for the common electrode in the display driving stage and provide a touch scanning signal for the common electrode in the touch driving stage, and therefore the cost of the display panel is reduced.

It can be understood that fig. 12 only includes two touch driving stages with one image frame, and when driving the touch display panel, the display driving stage is performed first, and after driving the display units of all the display unit rows to display, two consecutive touch driving stages are performed to ensure that at least whether there is a touch object touching the touch surface of the touch display panel is detected in one image frame.

Optionally, the display area of the touch display panel may include a plurality of display sub-areas, and each display sub-area may include at least one display unit row; each display driving phase may comprise a plurality of display sub-phases; the display sub-stage and the touch driving stage in the same image frame are alternately carried out; in a display sub-stage, performing display driving on a plurality of display units in different display unit rows in a display sub-area in a time-sharing manner; the display driving time of the display units of different display sub-areas belongs to different display sub-stages.

For example, fig. 13 is a timing diagram of driving a touch display panel according to another embodiment of the present invention. As shown in fig. 11 and 13, the display area VA may include two display sub-areas, and the corresponding display driving phase includes two display sub-phases, where the display sub-phase P1 and the touch driving phase C are arranged at intervals. In a display sub-stage, performing time-sharing display driving on the display units in the display unit row of one of the display sub-regions; after a display sub-stage is finished, entering a first touch driving stage C, scanning all touch electrodes A and B in a touch display panel in a time-sharing mode in the touch driving stage C, and applying a first touch scanning signal to the touch electrodes A and B in the same touch subarea AA in a time-sharing mode; after the first touch area stage C is finished, entering another display sub-stage P1 to perform time-sharing display driving on the display units of the display unit row 40 in another display sub-area; after the display sub-stage is finished, entering a second touch driving stage C, and scanning all touch electrodes A and B in the touch display panel in a time-sharing manner; thus, the display driving time of the display units in different display sub-areas belongs to different display sub-phases, and the display sub-phase P1 and the touch driving phase C are alternately performed, so that the display uniformity of the display panel can be improved.

The time length of each touch driving stage is the same, the time length of each display driving sub-stage is the same, that is, the time length of each touch driving stage C is the same, and the time length of each display driving stage P is the same, so as to further improve the display uniformity of the display panel.

Optionally, with continued reference to fig. 12 and 13, the touch subframe further includes a Noise detection stage Noise; at this time, the driving method of the touch display panel further includes: in the noise detection stage, performing noise detection on the touch display panel to obtain a noise detection signal; accordingly, when the touch position of the touch object is determined according to the touch detection signal fed back by each touch electrode, the touch position of the touch object can be determined by combining the touch detection signal fed back by each touch electrode and the noise detection signal.

Therefore, noise detection is carried out in the noise detection stage, and then the touch position is determined according to the obtained touch detection noise signal and the touch detection signal, so that the influence of background noise on the touch detection signal is avoided, and the accuracy of touch position detection is improved.

Based on the same inventive concept, the embodiment of the invention also provides a driving circuit. The driving circuit provided by the embodiment of the invention is used for driving the touch display panel of the embodiment. The touch display panel 100 includes a plurality of Q touch zones sequentially arranged along a first direction, and the same touch zone includes a plurality of N touch zones sequentially arranged along the first direction; the same touch area comprises M touch subareas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in arrays; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction.

Correspondingly, the driving circuit comprises a touch control driving circuit, the touch control driving circuit is used for providing first touch control scanning signals to the first touch control electrodes in different touch control areas in the same touch control area group in a time-sharing manner, the first touch control electrodes in different touch control subareas in the same touch control area apply time overlapping of the first touch control scanning signals, and the touch control driving circuit receives touch control detection signals fed back by the first touch control electrodes in a one-to-one correspondence manner; determining a touch area of the touch object according to the touch detection signals fed back by the first touch electrodes; time overlapping of applying first touch scanning signals to first touch electrodes of touch areas with the same arrangement sequence number in different touch area groups is achieved; the touch driving circuit 400 is further configured to provide first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner, provide first touch scanning signals to touch electrodes in different touch areas in the same touch area group in a time-sharing manner, and receive touch detection signals fed back by the touch electrodes in a one-to-one correspondence manner; and determining the touch position of the touch object according to the touch detection signals fed back by the touch electrodes.

For example, fig. 14 is a schematic structural diagram of a touch display panel provided with a driving circuit according to an embodiment of the invention, and as shown in fig. 14, the touch driving circuit 400 is disposed in a non-display area of the touch display panel 100. For example, the touch display panel 100 includes 1 touch control group a0, the touch control group a0 includes 4 touch control areas arranged along the touch control group in the first direction X in the figure, the 4 touch control areas are the first touch control area 1, the second touch control area 2, the third touch control area 3 and the fourth touch control area 4, and each touch control sub-area includes 2 × 1 touch control electrodes (a and B). The touch electrode in each touch subarea comprises a first touch electrode, the first touch electrode can be a touch electrode A or a touch electrode B, and when a touch object touches the touch surface of the touch display panel, the touch area of the touch object can simultaneously cover at least one touch electrode A and at least one touch electrode B.

In this way, when the touch driving circuit drives each touch electrode in the touch display panel, only the first touch scanning signal is provided to the first touch electrode of each touch subarea, and the touch detection signal fed back by the first touch electrode of each touch subarea is received, so as to determine whether a touch object touches the touch surface of the touch display panel; and then respectively providing a first touch scanning signal to each touch electrode of each touch subarea and receiving a touch detection signal fed back by each touch electrode to determine the touch position of a touch object on the touch surface of the display panel, compared with the prior art, in a mode of providing the first touch scanning signal to each touch electrode of each touch subarea in a time-sharing manner when determining whether the touch object touches the touch surface of the display panel, the embodiment of the invention can reduce the time required for determining whether the touch object touches the touch surface of the display panel by only providing the first touch scanning signal to the first touch electrode of each touch subarea when determining whether the touch object touches the touch surface of the display panel, thereby improving the problem of touch delay and the touch report rate on the premise of higher touch detection accuracy, and improving the touch sensitivity of the touch display panel when the touch display panel is applied to a vehicle, thereby improving the safety and reliability of the vehicle.

Optionally, fig. 15 is a schematic structural diagram of another touch display panel provided with a driving circuit according to an embodiment of the present invention, and as shown in fig. 15, the touch display panel 100 further includes a plurality of first gate circuits 210, and each first gate circuit 210 includes a plurality of first switch units 211; the first ends of different first switch units 211 of the same first gating circuit 210 are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; second ends of different first switch units 211 of the same first gating circuit 210 are electrically connected with the same touch terminal; the first switch units 211 of different first gate circuits 210 are electrically connected to different touch terminals; the touch driving circuit 400 includes a plurality of third gate circuits 230; the third gate circuit 230 includes a plurality of third switching units 231; first ends of a plurality of third switching units 231 of the same third gate circuit 230 are electrically connected; the second ends of different third switch units 231 in the same third gating circuit 230 are electrically connected to the touch terminals corresponding to the touch sub-areas of different touch areas; the touch terminals corresponding to different touch sub-areas of the touch area are electrically connected to different third gating circuits 230; each first switch unit 211 of the same first gate circuit 210 is turned on in a time-sharing manner, and the third switch units 231 with the same arrangement sequence number in different third gate circuits 230 are turned on in a time-sharing manner, so as to apply the first touch scanning signal to the M touch electrodes in different touch areas in a time-sharing manner; m touch control electrodes which are overlapped in time of receiving the first touch control scanning signal belong to different touch control subareas.

When each touch area of the touch display panel corresponds to two touch sub-areas, each touch area corresponds to two first gate circuits, and the specific connection relationship may refer to the above description, and here, only the connection relationship of the third gate circuit is exemplarily described.

For example, with continued reference to fig. 15, when each touch area includes two touch sub-areas, one touch area group corresponds to two third strobes 230; when the touch zone group includes four touch areas, each of the third gate circuits 230 may include four third switching units 231; each third switch unit 231 of the third gate circuit 230 electrically connected to the same terminal RX1 is electrically connected to the first gate circuit 210 corresponding to the first row of touch subareas in different touch areas, and each third switch unit 231 of the third gate circuit 230 electrically connected to the same terminal RX2 is electrically connected to the first gate circuit 210 corresponding to the second row of touch subareas in different touch areas.

Take the first gating circuit 210 corresponding to the touch sub-area of the first row as an example. In the same third gating circuit 230: a control terminal of the third switching unit 2311 is electrically connected with the gate control line SW01 to be turned on or off under the control of the gate control line SW 01; a control terminal of the third switching unit 2312 is electrically connected to the gate control line SW02 to be turned on or off under the control of the gate control line SW 02; a control terminal of the third switching unit 2313 is electrically connected to the gate control line SW03 to be turned on or off under the control of the gate control line SW 01; a control terminal of the third switching unit 2314 is electrically connected with the gate control line SW04 to be turned on or off under the control of the gate control line SW 01; first ends of the third switching units 2311, 2312 and 2314 are electrically connected to the terminal RX 1; a second end of the third switch unit 2311 is electrically connected with the touch terminal corresponding to the first row of touch sub-area AA of the first touch area 1, that is, electrically connected with the first gating circuit 210 corresponding to the first row of touch sub-area AA of the first touch area 1; a second end of the third switch unit 2312 is electrically connected with the touch terminal corresponding to the first row of touch sub-area AA of the second touch area 2, that is, electrically connected with the first gating circuit 210 corresponding to the first row of touch sub-area AA of the second touch area 2; a second end of the third switch unit 2313 is electrically connected with the touch terminal corresponding to the first row of touch sub-area AA of the third touch area 3, that is, electrically connected with the first gating circuit 210 corresponding to the first row of touch sub-area AA of the third touch area 3; the second end of the third switch unit 2314 is electrically connected to the touch terminal corresponding to the first row of touch sub-area AA of the fourth touch area 4, that is, electrically connected to the first gating circuit 210 corresponding to the first row of touch sub-area AA of the fourth touch area 4.

It is understood that, in practical settings, the number of the touch group a0 in the touch display panel is not limited to 1, the total number of the touch areas (the sum of the touch areas included in each touch group a 0) is also much greater than 4, the number of the touch electrodes in each touch area is also much greater than 4, the number of the first gate circuits 210 is also much greater than 8, and the number of the first switch units 211 in the first gate circuit 210 is also not limited to 2, and the number of the touch group a0, the touch areas, the touch electrodes in the touch areas, the first gate circuits 210, the third gate circuits 230, the first switch units 211 in the first gate circuits 210, and the third switch units 231 in the third gate circuits 230 are not limited in this embodiment.

Specifically, when the first touch scan signal is provided to the touch electrode a of the first touch region 1, the gate control line SWA controls the first switch unit 2111 to be turned on, and the gate control line SW01 controls the third switch unit 2311 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes a of the first touch region 1 through the turned-on third switch unit 2311 and the turned-on first switch unit 2111; when the first touch scan signal is supplied to the touch electrode a of the second touch region 2, the gate control line SWA controls the first switch unit 2111 to be turned on, and the gate control line SW02 controls the third switch unit 2312 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes a of the second touch region 2 through the turned-on third switch unit 2312 and the turned-on first switch unit 2111; when the first touch scan signal is supplied to the touch electrode a of the third touch region 3, the gate control line SWA controls the first switch unit 2111 to be turned on, and the gate control line SW03 controls the third switch unit 2313 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes a of the third touch region 3 through the turned-on third switch unit 2313 and the turned-on first switch unit 2111; when the first touch scan signal is supplied to the touch electrode a of the fourth touch region 4, the gate control line SWA controls the first switch unit 2111 to be turned on, and the gate control line SW04 controls the third switch unit 2314 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes a of the fourth touch region 4 through the turned-on third switch unit 2314 and first switch unit 2111.

Likewise, when the first touch scan signal is supplied to the touch electrode B of the first touch region 1, the gate control line SWB controls the first switch unit 2112 to be turned on, and the gate control line SW01 controls the third switch unit 2311 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes B of the first touch region 1 through the turned-on third switch unit 2311 and first switch unit 2112; when the first touch scan signal is supplied to the touch electrode B of the second touch region 2, the gate control line SWB controls the first switch unit 2112 to be turned on, and the gate control line SW02 controls the third switch unit 2312 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes B of the second touch region 2 through the turned-on third switch unit 2312 and first switch unit 2112; when the first touch scan signal is supplied to the touch electrode B of the third touch region 3, the gate control line SWB controls the first switch unit 2111 to be turned on, and the gate control line SW03 controls the third switch unit 2313 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes B of the third touch region 3 through the turned-on third switch unit 2313 and first switch unit 2112; when the first touch scan signal is supplied to the touch electrode a of the fourth touch region 4, the gate control line SWB controls the first switch unit 2112 to be turned on, and the gate control line SW04 controls the third switch unit 2314 to be turned on, so that the first touch scan signal at the terminals RX1 and RX2 can be respectively transmitted to the two touch electrodes B of the fourth touch region 4 through the turned-on third switch unit 2314 and first switch unit 2112.

It should be noted that the above driving control method only provides a feasible touch timing manner, and the display of the touch display panel 100 is controlled by adjusting the number of the first switch units 211 in the first gate circuit 210 and the number of the third switch units 231 in the third gate circuit 230, and further controlling the on and off timings of the first switch units 211 and the third switch units 231, which is not listed here, and fig. 15 only shows a structural schematic diagram of a touch display panel, but does not constitute a limitation to the present application. Those skilled in the art can set the touch area according to actual situations as long as time-sharing driving of different touch areas can be achieved.

Optionally, fig. 16 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention, and referring to fig. 16, the driving circuit may further include a timing control circuit 300 and a display driving circuit 500, where the timing control circuit 300 is configured to provide a frame synchronization signal for each image frame to define a time of one image frame; the image frame comprises at least one display driving stage and a plurality of touch driving stages; a display driving circuit 500 for outputting a display driving signal to perform a picture display in a display driving stage; the touch driving circuit 400 is configured to provide the first touch scanning signals to the touch electrodes of the M touch sub-areas in different touch areas in the same touch area group in a time-sharing manner in each touch driving stage, and perform the phase of providing the first touch scanning signals to the different touch electrodes of the same touch sub-area in a time-sharing manner, so as to implement the time-sharing driving of touch and display.

Based on the same inventive concept, the embodiment of the invention also provides a touch display device. The touch display device provided by the embodiment of the invention comprises the touch display panel and the driving circuit in the embodiment, so that the touch display device provided by the embodiment of the invention has the corresponding beneficial effects in the embodiment, and the description is omitted.

For example, the touch display device may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and a vehicle-mounted display device, which is not limited in this embodiment of the present invention. Fig. 17 is a schematic structural diagram of a touch display device according to an embodiment of the present invention, and as shown in fig. 17, the touch display device 600 includes the touch display panel 100 and the driving circuit 700 in the above embodiment. The touch chip and the display chip may be integrated into the same chip, and the touch driving circuit may be integrated inside the chip, or the driving circuit 700 is disposed in the touch display panel 100, which is not limited in this embodiment.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The driving method of the touch display panel is characterized in that the touch display panel comprises Q touch zones which are sequentially arranged along a first direction, and the same touch zone comprises N touch zones which are sequentially arranged along the first direction; the touch area comprises M touch sub-areas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in an array; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction;

the driving method includes:

2. The driving method of the touch display panel according to claim 1, wherein the touch sub-area further includes a second touch electrode, and when the first touch scan signal is provided to different touch electrodes in the same touch sub-area in a time-sharing manner, the time when the second touch electrode receives the first touch scan signal is later than the time when other touch electrodes receive the first touch scan signal;

when the touch area of the touch object overlaps with the lth touch area of the same touch area group and does not overlap with the L +1 touch area, before providing the first touch scan signal to the first touch electrodes of different touch areas in the same touch area group in a time-sharing manner, the method further includes:

providing the first touch scanning signals to M second touch electrodes of at least part of the touch areas from the L +1 th touch area to the Nth touch area in a time-sharing manner;

wherein L is less than N, and L is a positive integer.

3. The driving method of the touch display panel according to claim 2, wherein the first touch electrode and the second touch electrode in the touch sub-area are the same touch electrode.

4. The driving method of the touch display panel according to claim 1, wherein the driving method includes a plurality of image frames; the same image frame comprises a plurality of touch driving stages; the touch driving stage comprises K touch subframes by P;

providing first touch scanning signals to the first touch electrodes of different touch areas in the same touch area group in a time-sharing manner, wherein the method comprises the following steps:

in one touch subframe, providing the first touch scanning signals to the first touch electrodes in different touch areas of the same touch area group in a one-to-one correspondence time-sharing manner;

providing the first touch scanning signals to different touch electrodes in the same touch subarea in a time-sharing manner, and providing the first touch scanning signals of the touch electrodes in different touch areas in the same touch area group in a time-sharing manner, including:

in the K x P touch subframes, the first touch scanning signals are correspondingly provided to different touch electrodes of the same touch subarea in a time-sharing manner one by one, and the first touch scanning signals of the touch electrodes of different touch areas in the same touch area group are correspondingly provided in a time-sharing manner one by one;

in one touch subframe, the first touch scanning signal is provided to the touch electrodes in different touch areas of the same touch area group in a time-sharing manner; in one touch subframe, the M touch electrodes receiving the first touch scanning signal in the same touch area are the touch electrodes with the same arrangement sequence number in different touch subareas respectively; and the stages of applying the first touch scanning signal to different touch electrodes in the same touch subarea belong to different touch subframes.

5. The driving method of the touch display panel according to claim 4, wherein the touch display panel further comprises a plurality of first gate circuits, the first gate circuits comprising a plurality of first switch units; the first ends of different first switch units of the same first gating circuit are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; the second ends of different first switch units of the same first gating circuit are electrically connected with the same touch terminal; the first switch units of different first gating circuits are electrically connected with different touch terminals;

in one touch subframe, controlling one first switch unit of each first gating circuit to be switched on, and controlling the other first switch units to be switched off; and providing the first touch scanning signal to the touch terminal electrically connected with the first gating circuit corresponding to the touch electrodes of different touch areas in the same touch area group in a time-sharing manner, so that the first touch scanning signal is transmitted to the corresponding touch electrode through the conducted first switch unit.

6. The driving method of the touch display panel according to claim 4, wherein the touch display panel further includes a display area; the display area comprises at least one display unit row; the display unit row comprises a plurality of display units which are sequentially arranged along the first direction;

the image frame further comprises a display driving phase;

the driving method further includes:

and in the display driving stage, performing display driving on the display unit in the display area.

7. The driving method of the touch display panel according to claim 6, wherein the display area includes a plurality of display sub-areas;

the display driving phase comprises a plurality of display sub-phases; the display sub-stage and the touch driving stage are alternately carried out in the same image frame;

in one display sub-stage, performing display driving on a plurality of display units in different display unit rows in one display sub-region in a time-sharing manner; wherein the display drive time of the display units of different display sub-regions belong to different display sub-phases.

8. The driving method of the touch display panel according to claim 7, wherein the time duration of each touch driving phase is the same, and the time duration of each display driving sub-phase is the same.

9. The driving method of the touch display panel according to claim 4, wherein the touch subframe further comprises a noise detection stage;

the driving method further includes:

in the noise detection stage, performing noise detection on the touch display panel to obtain a noise detection signal;

determining the touch position of the touch object according to the touch detection signal fed back by each touch electrode, comprising:

and determining the touch position of the touch object according to the touch detection signal fed back by each touch electrode and the noise detection signal.

10. The driving method of the touch display panel according to claim 1, further comprising:

in the same touch subarea, when the first touch scanning signal is provided for one of the touch electrodes, second touch scanning signals are provided for the other touch electrodes; wherein the first touch scanning signal is different from the second touch scanning signal.

11. The driving method of the touch display panel according to claim 10, wherein the touch display panel further comprises a plurality of second gate circuits, the second gate circuits comprising a plurality of second switch units; the first ends of different second switch units of the same second gating circuit are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; the second ends of different second switch units of the same second gating circuit are electrically connected with the same common terminal;

in the same touch subarea, when the first touch scanning signal is provided to one of the touch electrodes, a second touch scanning signal is provided to the other touch electrodes, including:

in the same touch subarea, controlling the second switch units corresponding to the touch electrodes receiving the first touch scanning signal to be closed, and controlling the second switch units corresponding to other touch electrodes to be switched on; and providing the second touch scanning signal to the common terminal, so that the second touch scanning signal transmits each corresponding touch electrode through the conducted second switch unit.

12. The driving circuit is characterized in that the driving circuit is used for driving a touch display panel; the touch display panel comprises a plurality of Q touch areas which are sequentially arranged along a first direction, and the same touch area comprises a plurality of N touch areas which are sequentially arranged along the first direction; the same touch area comprises M touch subareas arranged along a second direction; the same touch subarea comprises K x P touch electrodes arranged in an array; the K x P touch electrodes in the same touch subarea comprise a first touch electrode; k is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the first direction, and P is less than or equal to the maximum number of the touch electrodes covered by the contact area of the touch object and the touch display panel in the second direction; wherein Q, N, M, K and P are both positive integers and K P is greater than or equal to 2; the first direction intersects the second direction;

the drive circuit includes:

13. The driving circuit according to claim 12, wherein the touch display panel further comprises a plurality of first gate circuits including a plurality of first switch units; the first ends of different first switch units of the same first gating circuit are electrically connected with different touch electrodes of the same touch subarea in a one-to-one correspondence manner; the second ends of different first switch units of the same first gating circuit are electrically connected with the same touch terminal; the first switch units of different first gating circuits are electrically connected with different touch terminals;

the touch control driving circuit comprises a plurality of third gating circuits; the third gate circuit includes a plurality of third switching units; first ends of a plurality of third switching units of the same third gating circuit are electrically connected; second ends of different third switch units in the same third gating circuit are electrically connected with the touch terminals corresponding to the touch subareas of different touch areas; the touch terminals corresponding to different touch subareas of the touch area are electrically connected with different third gating circuits;

each first switch unit of the same first gating circuit is conducted in a time-sharing mode, and the third switch units with the same arrangement serial number in different third gating circuits are conducted in a time-sharing mode, so that first touch scanning signals are applied to the M touch electrodes in different touch areas in a time-sharing mode; m touch electrodes which are overlapped in time of receiving the first touch scanning signal belong to different touch subareas.

14. The driving circuit according to claim 12, further comprising: a timing control circuit and a display driving circuit;

the timing control circuit is used for providing a frame synchronization signal for each image frame so as to limit the time of one image frame; the image frame comprises at least one display driving stage and a plurality of touch driving stages;

the display driving circuit is used for outputting a display driving signal to display a picture in the display driving stage;

the touch driving circuit is configured to provide first touch scanning signals to the touch electrodes of M touch subareas of different touch areas in the same touch area group in a time-sharing manner in each touch driving stage, and provide the first touch scanning signals to different touch electrodes of the same touch subarea in a time-sharing manner.

15. A touch display device, comprising: a touch display panel and a driver circuit as claimed in any one of claims 12 to 14.