A driving method for a touch display device, a driving circuit and a touch display device

Abstract

The present invention discloses a driving method for a touch display device and a touch display device, comprising: each image frame comprises a plurality of display stages and a plurality of touch stages; the plurality of touch stages comprise a plurality of touch driving stages and at least one noise detection stage; each image frame comprises at least one touch detection frame, and each touch detection frame comprises a plurality of touch driving stages; at least the first touch detection frame further comprises a noise detection stage; the driving method comprises: performing display driving on the touch display device through the display stage; performing noise detection through the noise detection stage to obtain a touch detection noise signal; applying a touch driving signal to the touch display device through the touch driving stage; wherein the display stage and the touch stage are alternately distributed in each image frame; the noise detection stage is located before the first touch driving stage of the touch detection frame, thereby reducing the touch sensing reaction time and improving the touch detection efficiency of the touch display panel.

Description

Technical Field

[0001] The present invention relates to the technical field of display panels, and in particular to a driving method, a driving circuit and a touch display device. Background Art

[0002] Nowadays, touch display panels have been widely used by people. For example, smart phones, tablet computers, etc. all use touch display panels. The existing embedded touch technology is mainly divided into two types: one is the touch detection circuit on the liquid crystal box (On Cell) type, and the other is the touch detection circuit inside the liquid crystal box (In Cell) type.

[0003] In the prior art, when a touch display panel displays a frame of an image, the touch stage and the display stage are set at intervals, and the noise detection stage is set after the last touch drive stage of each touch detection frame to perform noise detection. When a touch operation of a touch subject occurs at a touch drive stage of the first touch detection frame of the display panel, the display panel detects that there is a touch detection period T'=T1'+T2'+T3'+T4' at the touch drive stage, where T1' is the time of the touch detection frame at the location where the touch subject occurs the touch operation, T2' is the secondary detection stage, T3' is the data collection stage, and T4' is the data processing stage. Since the display panel detects that there is a long touch detection period at the location where the touch subject touches, when the display panel is applied to a vehicle-mounted display, the long touch detection period is likely to reduce the speed at which the display panel reacts to an erroneous touch, resulting in a very slow response to the touch detection, and the speed of the touch detection cannot meet the requirements of the touch display device. Summary of the invention

[0004] Embodiments of the present invention provide a driving method, a driving circuit and a touch display device for improving the touch detection efficiency of a touch display panel.

[0005] In a first aspect, an embodiment of the present invention provides a method for driving a touch display device, wherein each image frame includes multiple display stages and multiple touch stages; the multiple touch stages include multiple touch driving stages and at least one noise detection stage;

[0006] Each image frame includes at least one touch detection frame, each touch detection frame includes multiple touch driving stages; at least the first touch detection frame also includes a noise detection stage; the driving method includes:

[0007] Performing display driving on the touch display device in a display stage;

[0008] Performing noise detection in a noise detection phase to obtain a touch detection noise signal;

[0009] Applying a touch driving signal to the touch display device through a touch driving stage;

[0010] The display phase and the touch phase are alternately distributed in each image frame; and the noise detection phase is located before the first touch driving phase of the touch detection frame.

[0011] In a second aspect, an embodiment of the present invention provides a driving circuit, including a timing control circuit, for providing a frame synchronization signal in each image frame, wherein the frame synchronization signal includes a plurality of display stages and a plurality of touch stages, wherein the plurality of touch stages include a plurality of touch driving stages and at least one noise detection stage;

[0012] A display driving circuit is used to output a display driving signal to display a picture in each display stage; and

[0013] A touch driving circuit, configured to output a touch driving signal to perform touch detection in each touch driving phase and to perform noise detection in each noise detection phase to obtain a touch detection noise signal;

[0014] The display phase and the touch phase are alternately distributed in each image frame; and the noise detection phase is located before the first touch driving phase of the touch detection frame.

[0015] In a third aspect, an embodiment of the present invention further provides a touch display device, comprising the driving circuit described in the second aspect, and also comprising a touch display panel, wherein the driving circuit drives the touch display panel for display in each display stage, performs touch detection drive on the touch display panel in each touch stage, and performs noise detection on the touch display panel in the noise detection stage.

[0016] The driving method, driving circuit and touch detection device of the touch display panel provided by the embodiments of the present invention set the noise detection stage before the first touch driving stage of the touch detection frame. When the touch subject touches a certain touch driving stage of the display panel, compared with the driving method of the touch display panel in the prior art, the driving method of the touch display panel provided by the embodiments of the present invention can shorten the duration of the touch detection cycle and improve the touch detection efficiency of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a driving timing diagram of a driving method of a touch display device in the prior art;

[0018] Figure 2 It is a timing diagram of a touch detection cycle in the prior art;

[0019] Figure 3is a schematic flow chart of a method for driving a touch display device provided by an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 A driving timing diagram corresponding to a driving method of a provided touch display device;

[0021] Figure 5 is a timing diagram of a touch detection cycle provided by an embodiment of the present invention;

[0022] Figure 6 is a driving timing diagram corresponding to another driving method of a touch display device provided by an embodiment of the present invention;

[0023] Figure 7 is a driving timing diagram corresponding to another driving method of a touch display device provided by an embodiment of the present invention;

[0024] Figure 8 yes Figure 7 A schematic diagram of the structure of a touch driving circuit corresponding to the provided touch display device;

[0025] Fig. 9 is a driving timing diagram corresponding to another driving method of a touch display device provided by an embodiment of the present invention;

[0026] Fig.10 is a schematic structural diagram of a driving circuit provided by an embodiment of the present invention;

[0027] Fig.11 It is a structural schematic diagram of a touch display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] With the development of display technology, in the prior art, a display control module and a touch control module are integrated on a driver IC, and the display and touch functions of the display panel are realized by time-sharing driving of the display panel. Figure 1 is a driving timing diagram of a driving method of a touch display device in the prior art, Figure 2 is a timing diagram of a touch detection cycle in the prior art, such as Figure 1 and Figure 2 As shown, each image frame contains multiple display stages ( Figure 1denoted by P1' to P11') and a plurality of touch control stages, the plurality of touch control stages comprising a plurality of touch control driving stages and at least one noise detection stage ( Figure 1 A1' to A4' represent the touch driving stage, and N' represents the noise detection stage), multiple display stages and multiple touch stages are set at intervals, and the noise detection stage N' is set after the last touch driving stage of each touch detection frame to perform noise detection. When there is a touch operation of the touch subject at a touch driving stage of the first touch detection frame of the display panel, the display panel detects that there is a touch detection period T' at the touch driving stage as shown in FIG. Figure 2 As shown, T'=T1'+T2'+T3'+T4', where T1' is the time of the touch detection frame where the touch subject has a touch operation, that is, when touching the touch electrode of the first touch stage A1', the touch driving circuit cannot detect the touch here, and needs to wait until the second touch detection frame T2' to detect this touch, that is, the time T1' is missed. T2' is the secondary detection stage. After the scanning of all touch electrodes in the touch display panel is completed in the second touch detection frame, the finger is found to touch the touch electrode of the first touch stage A1' in the first touch detection frame, that is, it takes T2' time at this time, and T2' time is also the time of a touch detection frame. However, according to the principle of touch calculation accuracy, in order to prevent interference caused by jitter and other reasons and cause misjudgment, T2' will be discarded. T3' is the data collection stage. After the secondary detection is completed, the touch position data is collected after the scanning of all touch electrodes in the touch display panel is completed in the third touch detection frame. T4' is the data processing stage, which is the stage of data processing and touch position determination. The time of T4' is related to the computing speed of the touch chip. Since the touch detection cycle of the display panel detecting the touch position of the touch subject is relatively long (T'=T1'+T2'+T3'+T4'), when the display panel is used for vehicle display, the longer touch detection cycle is easy to reduce the speed of the display panel's response to false touches, affecting the safety performance of the vehicle and reducing the user experience. Without affecting the display of the display panel, improving the touch detection cycle has become a relatively large problem.

[0030] In order to solve the above technical problems, an embodiment of the present invention provides a method for driving a touch display panel. Figure 3 is a schematic flow chart of a method for driving a touch display device provided by an embodiment of the present invention, Figure 4 yes Figure 3 The driving timing diagram corresponding to the driving method of the touch display device provided, Figure 5 is a timing diagram of a touch detection cycle provided by an embodiment of the present invention, such as Figure 3 , Figure 4 and Figure 5As shown, each image frame includes multiple display stages and multiple touch stages, the multiple touch stages include multiple touch drive stages and at least one noise detection stage, wherein the display stages and the touch stages in each image frame are alternately distributed, the noise detection stage is located before the first touch drive stage of the touch detection frame, and the driving method includes:

[0031] S110 , driving the touch display device for display in a display phase.

[0032] S120 , performing noise detection in a noise detection phase to obtain a touch detection noise signal.

[0033] S130 , applying a touch driving signal to the touch display device through a touch driving stage.

[0034] See also Figure 4 , each image frame includes multiple display stages ( Figure 4 Exemplarily, P1 to P11 represent multiple display stages) and multiple touch stages, and the display stages and the touch stages are alternately distributed in each image frame. Exemplarily, Figure 4 In the embodiment, the display stage includes P1 to P11, the touch stage includes touch drive stages A1 to A4 and at least one noise detection stage N. In a frame of image display, when the touch display panel is in the display stage, the display panel performs display scans from P1 to P11 and does not perform touch scans. When the touch display panel is in the touch stage, the display panel performs touch scans from A1 to A4 in sequence and does not perform display scans.

[0035] It should be noted that Figure 4 It is exemplified that one image frame includes two touch detection frames, and the first image frame may also include one touch detection frame. The embodiment of the present invention does not limit the specific number of touch detection frames.

[0036] like Figure 5 As shown, by setting the noise detection stage N before the first touch driving stage A1 of the touch detection frame, when there is a touch of the touch subject at the first touch driving stage A1, the cycle of a touch detection is Figure 5T in which T=T1+T2+T3+T4, T1 is the time of the touch detection frame at the position where the touch subject performs the touch operation, T2 is the secondary detection stage, T3 is the data collection stage, and T4 is the data processing stage, and the duration T2 of the secondary detection stage, the duration T4 of the data collection stage, and the duration T4 of the data processing stage are unchanged. However, since the noise detection stage is set before the first touch driving stage A1 of the touch detection frame, that is, at this time T1, the time of the touch detection frame at the position where the touch operation occurs by the touch subject is T1=P3+P4+P5+A2+A3+A4, compared with the time of the touch detection frame at the position where the touch operation occurs by the touch subject in the prior art, T1'=P2'+P3'+P4'+P5'+A2'+A3'+A4'+N', it is reduced by a P2+N duration, that is, the duration of one display stage and the duration of one noise detection stage are reduced, the duration of touch detection is reduced, and the touch detection efficiency of the display panel is improved.

[0037] For example, Figure 4 and Figure 5 The touch operation of the touch subject is exemplified in the first touch driving stage in the first touch detection frame. The touch stage in which the touch operation of the touch subject occurs may also be set to the second touch driving stage A2 or the third touch driving stage A3 and the fourth touch driving stage A4. The embodiment of the present invention does not specifically limit the position of the touch driving stage in which the touch operation of the touch subject occurs.

[0038] The driving method of the touch display panel provided by the embodiment of the present invention sets the noise detection stage before the first touch driving stage of the touch detection frame. When a touch subject is touched in a touch driving stage of the display panel, compared with the driving method of the touch display panel in the prior art, the driving method of the touch display panel provided by the embodiment of the present invention can shorten the duration of the touch detection cycle and improve the touch detection efficiency of the display panel.

[0039] Optional, continue to see Figure 4 , each touch detection frame includes a noise detection stage N.

[0040] By setting each touch detection frame to include a noise detection stage, when a touch operation of a touch subject is detected in the touch driving stage of the first touch detection frame, if a touch operation of the touch subject exists in the touch driving stage of a second touch detection frame at the same position as the first touch detection frame, the second touch detection frame can detect whether there is a touch operation of the touch subject according to the noise detection stage in the current touch detection frame, thereby avoiding false touch operations on the touch display panel.

[0041] Optionally, the driving method also includes: after the i-th touch driving stage of the current touch detection frame ends, if the touch of the touch subject appears again in the area corresponding to the touch driving signal applied to the touch display device in the i-th touch driving stage, touch detection is performed according to the touch driving signal applied to the touch display device according to the second touch detection frame after the current touch detection frame.

[0042] For example, see Figure 5 , Figure 5 In the embodiment, when the touch of the touch subject is detected at the first touch driving stage A1 of the first touch detection frame, after the touch detection frame with the touch of the touch subject ends, if the touch of the touch subject at the same position as the first touch detection frame exists in the second touch detection frame, that is, the T2 time period, that is, the touch of the touch subject also exists at the touch driving stage A1 in the T2 time period, it means that in both touch detection frames, the touch of the touch subject at the same position exists. Therefore, it can be judged that the position where the touch of the touch subject exists at this time is not caused by an accidental touch. At this time, touch detection is performed according to the touch driving signal applied to the touch display device according to the second touch detection frame after the current touch detection frame. By setting the touch detection according to the touch driving signal applied to the touch display device according to the second touch detection frame after the current touch detection frame, it can be avoided that the display panel is touched by the touch subject due to an accidental touch of the touch display panel, thereby improving the accuracy of the touch detection result of the display panel.

[0043] Optionally, the duration of each touch driving phase is the same, and the duration of each display phase is the same.

[0044] When the display panel is displaying a frame of image, in the first display stage, the gate drive signal is applied to the gate of the driving transistor corresponding to the first display stage, and the grayscale voltage is applied to the data line, so that the pixel unit corresponding to the first display stage is selected and can be displayed according to the grayscale voltage provided by the source driving module. In the second display stage, the gate drive signal is applied to the gate of the driving transistor corresponding to the second display stage, and the grayscale voltage is applied to the data line, so that the pixel unit corresponding to the second display stage is selected and can be displayed according to the grayscale voltage provided by the source driving module. By analogy, in the last display stage in the image frame, the gate drive signal is applied to the gate of the driving transistor corresponding to the last display stage, and the grayscale voltage is applied to the data line, so that the pixel unit corresponding to the last display stage is selected and can be displayed according to the grayscale voltage provided by the source driving module. By setting the duration of each display stage to be the same, it is ensured that when the touch display panel is in the display stage in a frame of image, the duration of the driving signal of each display stage is the same, so as to ensure the uniformity of the display panel in displaying a frame of image. The principle of setting the duration of each touch driving phase to be the same is the same as the principle of setting the duration of the display phase to be the same, and will not be described in detail here.

[0045] Optionally, the duration of the noise detection phase is the same as the duration of the touch driving phase.

[0046] Since the touch stage includes a touch drive stage and a noise detection stage, the duration of the noise detection stage and the duration of the touch drive stage can be set to reduce the touch duration of the touch display panel in the touch stage and ensure the display effect of the display panel.

[0047] It should be noted that Figure 4 The duration of the noise detection phase is exemplarily stated to be the same as that of the touch driving phase. The duration of the noise detection phase may also be set to be greater than that of the touch driving phase, thereby ensuring that sufficient detection data is obtained during the noise detection phase for noise detection.

[0048] Optionally, the duration of the touch driving phase is shorter than the duration of the display phase.

[0049] Since the human eye has a certain recognition time window for image changes, the duration of the display phase is set to be longer than the duration of the touch drive phase so as not to affect the visual experience.

[0050] Optionally, based on the above embodiment, Figure 6 This is a driving timing diagram corresponding to another driving method of a touch display device provided by an embodiment of the present invention, the duration of an image frame is T, the duration of a display phase between adjacent touch phases is t1, wherein 0.08T≤t1≤0.09T.

[0051] Exemplary, combined Figure 2 and Figure 6 ,like Figure 2 As shown, when the duration t1 of the display phase between adjacent touch phases accounts for 9% of the duration of the image frame, if a touch operation of the touch subject occurs in the first touch driving phase of the first touch detection frame, the touch detection obtains a cycle of T'=T1'+T2'+T3'+T4', T1'=P2'+P3'+P4'+P5'+A2'+A3'+A4'+N', by shortening the duration t1 of the display phase between adjacent touch phases, if a touch operation of the touch subject occurs in the first touch driving phase of the first touch detection frame, as shown in FIG. Figure 6 As shown, the touch detection cycle is T=T1+T2+T3+T4, T1=P2+P3+P4+P5+A2+A3+A4, since T1+T2 or T1'+T2' is an image frame, the duration of T1+T2 or T1'+T2' remains unchanged, and by reducing the display duration t1 of the display panel, the duration of T1' in the prior art satisfies T1'=P2'+P3'+P4'+P5'+A2'+A3'+A4'+N (for example, it can be reduced to 8%), and the duration of T1 in the present application satisfies T1=P3+P4+P5+A2+A3+A4. Compared with the prior art, since the duration of the display stages P3, P4 and P5 is reduced, the touch detection cycle of the touch display panel can be further reduced. Furthermore, experiments have shown that reducing the duration t1 of the display phase between the touch phases from the existing 9% to 8% can reduce the touch detection cycle of the touch display panel while not affecting the display.

[0052] Optionally, the driving method further includes: performing touch detection according to the feedback touch sensing signal and the touch detection noise signal.

[0053] When the touch display panel is in the touch stage, noise detection is performed in the noise detection period. Assuming that an excitation signal f is preset in the touch stage, in the noise detection stage of the first touch detection frame, an excitation signal with a frequency of f is applied and a sensing signal is obtained, thereby detecting the noise value at the frequency f. In the detection stage of the second touch detection frame, if there is a touch operation of the touch subject in the touch driving stage at the same position as the first touch detection frame, at this time, in the noise detection stage of the second touch detection frame, an excitation signal with a frequency of f is applied and a sensing signal is obtained, thereby detecting the noise value at the frequency f, and the noise value in the first touch detection frame is the same as the noise value in the second touch detection frame, at this time, touch detection can be performed according to the feedback touch sensing signal and the touch detection noise signal.

[0054] Optionally, based on the above embodiment, Figure 7is a driving timing diagram corresponding to another driving method of a touch display device provided by an embodiment of the present invention, Figure 8 yes Figure 7 The touch display device provided corresponds to the touch driving circuit structure diagram, combined with Figure 7 and Figure 8 The touch display device includes a plurality of touch areas arranged in sequence along the pixel row direction or the pixel column direction ( Figure 8 Exemplary Mux1, Mux2, Mux3 and Mux4 represent touch areas), applying a touch drive signal to the touch display device through a touch drive phase includes: applying a touch drive signal to multiple touch areas one by one in multiple touch drive phases of each touch detection frame.

[0055] like Figure 8 As shown, when the display panel is in the touch stage, since the display panel includes a plurality of touch areas sequentially arranged along the pixel row direction or the pixel column direction, Figure 8 Four touch zones are exemplified. In the touch detection frame stage, when SW1 outputs a valid level signal, each touch electrode block in the first touch zone Mux1 connected to SW1 receives a touch drive signal. When SW2 outputs a valid level signal, each touch electrode block in the second touch zone Mux2 connected to SW2 receives a touch drive signal. When SW3 outputs a valid level signal, each touch electrode block in the third touch zone Mux3 connected to SW3 receives a touch drive signal. When SW4 outputs a valid level signal, each touch electrode block in the fourth touch zone Mux4 connected to SW4 receives a touch drive signal. By applying touch drive signals to the touch electrode blocks in the touch zones in turn, touch drive signals are applied to multiple touch zones one by one in multiple touch drive stages of each touch detection frame.

[0056] Optionally, the touch display device includes a plurality of touch area groups sequentially arranged along a pixel row direction or a pixel column direction; each touch area group includes a plurality of touch areas sequentially arranged along an arrangement direction of the touch area group, and a touch driving signal is applied to the touch display device through a touch driving stage, including:

[0057] In a plurality of touch driving phases of each touch detection frame, touch driving signals are applied to a plurality of touch areas in a one-to-one correspondence.

[0058] When an image frame includes multiple touch drive frames, such as Fig. 9 As shown, at this time, the touch driving signals can be applied to the multiple touch areas one by one in the multiple touch driving stages of each touch detection frame. For example, see Figure 8When SW1 outputs a valid level signal, each touch electrode block in Mux1 in the two touch detection frames connected to SW1 can receive a touch drive signal, thereby achieving touch drive signals applied to touch areas with the same arrangement number in different touch area groups in the same touch drive stage.

[0059] Optionally, the touch display device includes a plurality of display areas sequentially arranged along a pixel column direction, and the touch display device is driven for display in a display phase, including:

[0060] In multiple display phases of each image frame, display driving is performed on multiple display areas one by one.

[0061] For example, see Figure 4 , P1, P2, ... P11 represent multiple display stages in an image frame. When the display panel is in the display stage, the multiple display stages in each image frame realize display driving of display areas arranged sequentially along the pixel column direction, wherein one display stage represents scanning several rows of pixels. In one image frame, the display driving of multiple display areas arranged along the pixel column direction is completed.

[0062] Optionally, based on the above embodiment, Fig.10 is a schematic diagram of a driving circuit provided by an embodiment of the present invention, such as Fig.10 As shown, the driving circuit includes a timing control circuit 100, which is used to provide a frame synchronization signal in each image frame. The frame synchronization signal includes multiple display stages and multiple touch stages. The multiple touch stages include multiple touch driving stages and at least one noise detection stage.

[0063] The display driving circuit 200 is used to output a display driving signal for image display in each display stage, and the touch driving circuit 300 is used to output a touch driving signal for touch detection in each touch driving stage and to perform noise detection in each noise detection stage to obtain a touch detection noise signal.

[0064] The display phase and the touch phase are alternately distributed in each image frame, and the noise detection phase is located before the first touch driving phase of the touch detection frame.

[0065] The driving circuit provided in the embodiment of the present invention provides a frame synchronization signal in each image frame through a timing control circuit, the display driving circuit outputs a display driving signal to display the picture in each display stage, the touch driving circuit outputs a touch driving signal to perform touch detection in each touch driving stage and performs noise detection in each noise detection stage to obtain a touch detection noise signal, thereby realizing touch control and picture display of the touch display panel.

[0066] Optionally, based on the above embodiments, an embodiment of the present invention further provides a touch display device, including the driving circuit 500 described in the above embodiments, and also including a touch display panel 400, the driving circuit 500 drives the touch display panel for display in each display stage, performs touch detection drive on the touch display panel in each touch stage, and performs noise detection on the touch display panel in the noise detection stage.

[0067] Optionally, the touch display panel includes a liquid crystal panel or an OLED panel.

[0068] It should be noted that the touch display device provided in the embodiment of the present invention may be a mobile phone, a tablet computer, a smart wearable device (e.g., a smart watch), and other display devices with fingerprint recognition functions known to those skilled in the art, and the embodiment of the present invention is not limited to this.

[0069] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for driving a touch display device, characterized in that: Each image frame includes multiple display phases and multiple touch phases; the multiple touch phases include multiple touch drive phases and at least one noise detection phase; Each image frame includes at least one touch detection frame, and each touch detection frame includes a plurality of touch driving stages; At least the first touch detection frame also includes a noise detection phase; the driving method includes: Performing display driving on the touch display device in a display stage; Performing noise detection in a noise detection phase to obtain a touch detection noise signal; Applying a touch driving signal to the touch display device through a touch driving stage; The display stage and the touch stage are alternately distributed in each image frame; the touch detection frame including the noise detection stage includes one noise detection stage and a plurality of touch drive stages; in a touch detection frame including the noise detection stage, the noise detection stage is located before the first touch drive stage of the touch detection frame, and the display stage is arranged between the noise detection stage and the first touch drive stage, so as to reduce the duration of one display stage and the duration of one noise detection stage; The touch display device comprises a plurality of touch area groups sequentially arranged along a pixel row direction or a pixel column direction; each touch area group comprises a plurality of touch areas sequentially arranged along an arrangement direction of the touch area group; each of the touch areas comprises touch electrode blocks arranged in an array of multiple rows and columns, and a touch driving signal is applied to the touch display device through a touch driving stage, including: Applying touch driving signals to the plurality of touch areas in a one-to-one correspondence during a plurality of touch driving phases of each touch detection frame; All the touch electrode blocks in the touch areas with the same arrangement number in different touch area groups apply touch driving signals in the same touch driving phase.

2. The driving method according to claim 1, characterized in that: Each touch detection frame includes the noise detection stage.

3. The driving method according to claim 1, characterized in that: The driving method further comprises: After the i-th touch driving stage of the current touch detection frame ends, if the touch of the touch subject appears again in the area corresponding to the touch driving signal applied to the touch display device in the i-th touch driving stage, touch detection is performed according to the touch driving signal applied to the touch display device according to the second touch detection frame after the current touch detection frame.

4. The driving method according to claim 1, characterized in that: The duration of each of the touch driving phases is the same; the duration of each of the display phases is the same.

5. The driving method according to claim 4, characterized in that: The duration of the noise detection phase is the same as the duration of the touch driving phase.

6. The driving method according to claim 4, characterized in that: The duration of the touch driving phase is shorter than the duration of the display phase.

7. The driving method according to claim 1, characterized in that: The duration of the image frame is T, and the duration of the display phase between each adjacent touch phase is t1, wherein 0.08T≤t1≤0.09T.

8. The driving method according to claim 1, characterized in that: Also includes: Touch detection is performed according to the fed-back touch sensing signal and the touch detection noise signal.

9. The driving method according to claim 1, characterized in that: The touch display device comprises a plurality of display areas arranged in sequence along a pixel column direction; the display driving of the touch display device in the display stage comprises: The display driving is performed one by one on the plurality of display areas in a plurality of display phases of each image frame.

10. A touch display device, characterized in that: It comprises a driving circuit and a touch display panel, wherein the driving circuit drives the touch display panel for display in each display stage, performs touch detection driving on the touch display panel in each touch stage, and performs noise detection on the touch display panel in the noise detection stage; The driving circuit comprises: A timing control circuit, used for providing a frame synchronization signal in each image frame, wherein the frame synchronization signal includes a plurality of display phases and a plurality of touch phases, wherein the plurality of touch phases include a plurality of touch drive phases and at least one noise detection phase; A display driving circuit is used to output a display driving signal to display a picture in each display stage; and A touch driving circuit, configured to output a touch driving signal to perform touch detection in each touch driving phase and to perform noise detection in each noise detection phase to obtain a touch detection noise signal; The display stage and the touch stage are alternately distributed in each image frame; a touch detection frame including the noise detection stage includes one noise detection stage and a plurality of touch drive stages; in a touch detection frame including the noise detection stage, the noise detection stage is located before the first touch drive stage of the touch detection frame, and the display stage is arranged between the noise detection stage and the first touch drive stage, so as to reduce the duration of one display stage and the duration of one noise detection stage; The touch display device comprises a plurality of touch area groups sequentially arranged along a pixel row direction or a pixel column direction; each touch area group comprises a plurality of touch areas sequentially arranged along an arrangement direction of the touch area group; each of the touch areas comprises touch electrode blocks arranged in an array of multiple rows and columns, and a touch driving signal is applied to the touch display device through a touch driving stage, including: Applying touch driving signals to the plurality of touch areas in a one-to-one correspondence during a plurality of touch driving phases of each touch detection frame; All the touch electrode blocks in the touch areas with the same arrangement number in different touch area groups apply touch driving signals in the same touch driving phase.

11. The touch display device according to claim 10, wherein: The touch display panel includes a liquid crystal panel or an OLED panel.

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