TWI608473B - Touch display driving method and system and touch display screen - Google Patents

Description

Touch display driving method and system and touch display screen

The present invention relates to the field of touch display technologies, and more particularly to a touch display driving method and system and a touch display screen.

With the continuous development of science and technology, electronic devices with touch display functions are more and more widely applied to people's work and daily life, which brings great convenience to people's work and daily life. An important tool missing.

The touch display screen is the main component of the electronic device to realize the touch display function, and is usually a liquid crystal display screen. In the touch display driving of the existing touch display screen, the touch timing segment is inserted into one frame image, so that one frame image includes alternately distributed touch timing segments and display timing segments.

When the existing driving method performs touch display scanning, it is easy to appear dark stripes at a specific gate line position, and the touch display screen is easily aged and has a short service life.

To solve the above problems, the present invention provides a touch display driving method and system and a touch display screen, which can eliminate the influence of stripes, improve the display effect, and prolong the life of the display.

To achieve the above object, the present invention provides the following technical solutions:

A touch display driving method for a touch display screen, the touch display driving method includes:

When the touch display scan of the multi-frame image is sequentially performed, the distribution positions of the touch timing segments for controlling the multi-frame image are not completely the same;

The scan timing of each frame image includes: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the touch timing segment in the same frame image Interval distribution.

Preferably, in the above touch display driving method, the distribution positions of the touch timing segments for controlling the multi-frame image are not completely the same include:

In a continuous P frame image, the distribution positions of the touch timing segments for controlling the P frame images are different;

Where P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; N is a set adaptation coefficient, and N is a positive integer.

Preferably, in the above touch display driving method, the distribution positions of the touch timing segments for controlling the P frame images are different:

The distribution of the touch timing segments of the continuous P frame images of the touch display screen according to the set offset is different;

Wherein, the offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number smaller than P; ΔT is a separate display of the touch display screen in the display timing segment The time of one gate line; the value of i is the numerical index value of the corresponding element; the P elements are arranged in the set order; the value of i*ΔT is the time offset.

Preferably, in the touch display driving method, the array index value of each element is incremented or decremented;

The method for performing touch display scanning on any one of the P frame images includes:

Determine whether the direction of change of the array index value is incremented;

If yes, after the array index value i corresponding to the previous frame image is incremented by 1, the time offset corresponding to the current frame image is obtained;

The time offset is written into the shift register of the touch display screen, and the current frame image is driven to perform touch display scanning.

Preferably, in the above touch display driving method, the method further includes:

If the direction of change of the array index value i is not incremented, the array index value i corresponding to the previous frame image is decremented by one, and the time offset corresponding to the current frame image is obtained.

Preferably, in the touch display driving method, the difference between the array index values of two adjacent elements is different;

The method for performing touch display scanning on any one of the P frame images includes:

Obtaining a difference between a time offset of the frame image and a time offset of the previous frame image;

The difference is written into the shift register of the touch display screen, and the current frame image is driven to perform touch display scanning.

The present invention also provides a touch display driving system, the touch display driving system comprising:

The touch display scanning module is configured to sequentially perform touch display scanning of the multi-frame image;

The control module is configured to control the touch display scanning module to control the touch position display of the multi-frame image when the touch display scanning of the multi-frame image is performed in sequence;

The scan timing of each frame image includes: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the interval interval distribution of the touch timing segments in the same frame image .

Preferably, in the above touch display driving system, the control module is configured to control the distribution positions of the touch timing segments of the P frame images in consecutive P frame images;

Where P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; N is a positive integer, which is a set adaptation coefficient.

Preferably, in the above touch display driving system, the control module is configured to control the distribution positions of the touch timing segments of the continuous P frame images of the touch display screen according to the set offset amount array;

Wherein, the offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number smaller than P; ΔT is a separate display of the touch display screen in the display timing segment The time of a gate line; the value of i is the numerical index value of the corresponding element, and the array index value of each element is incremented or decremented; the value of i*ΔT is the time offset.

Preferably, in the touch display driving system, the control module includes:

a determining unit, configured to determine whether the direction of change of the array index value is incremented;

The acquiring unit, when the changing direction is incremented, adding 1 to the array index value corresponding to the previous frame image, and acquiring a time offset corresponding to the current frame image;

The driving unit is configured to write the time offset into the shift register of the touch display screen, and drive the current frame image to perform touch display scanning.

Preferably, in the touch display driving system, the acquiring unit is further configured to: after the change direction is not incremented, subtract the array index value corresponding to the previous frame image by 1 and obtain the time offset corresponding to the current frame image. .

The present invention also provides a touch display screen comprising: the touch display drive system of any of the above paragraphs.

According to the above description, the touch display method provided by the present invention includes: when performing touch display scanning of multiple frames of images in sequence, the distribution positions of the touch timing segments for controlling the multi-frame images are not completely the same; The scan timing of the image includes: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the touch timing segments are spaced apart in the same frame image. When the touch display method is used, the position of the touch timing segments of the multi-frame image is not completely the same, so that the touch display screen can realize the touch display scan of the multi-frame image. In the frame image, the gate lines that are subjected to the high voltage time are not completely the same due to the insertion of the touch timing segment, so that the different gate lines share the influence of the high voltage time extension, thereby slowing down the appearance of the dark stripes and slowing down the touch display. The aging of the curtain extends the service life.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the invention.

Referring to FIG. 1 , FIG. 1 is a schematic structural view of a conventional touch display panel. FIG. 1 shows three gate lines Gn-1, Gn and Gn+1 arranged in series, and three consecutive data lines. Dn-1, Dn and Dn+1, 9 primitive electrodes Pix, each primitive electrode Pix corresponds to a capacitor Cs.

If the gate lines Gn-1, Gn and Gn+1 are in the same display timing segment, when the Gn output is completed, the Gn+1 circuit will feed back to the circuit on Gn, so that the voltage on Gn is normally pulled low and turned off. If the Gn and Gn+1 are inserted into the touch timing segment, when the Gn output is completed and the touch timing segment is entered, the timing of the touch display screen is affected, and the Gn+1 circuit is not fed back, resulting in a Gn circuit off time delay. That is to say, the time for the Gn to withstand the high voltage conduction becomes long, and when the touch display driving process is repeated for a plurality of times, dark stripes appear at the Gn, resulting in aging of the touch display screen and a short service life.

It can be seen that the insertion of the touch timing segment causes the upper scan gate line to withstand the high voltage for a long time, so that the touch display screen accelerates the aging of the specific gate line during long-term use, so that the touch display screen is in the gate. Dark streaks are prone to appear at the pole lines, resulting in a short life.

In order to solve the above problems, an embodiment of the present invention provides a touch display driving method for a touch display screen, and the touch display method includes: controlling a touch of a multi-frame image when sequentially performing touch display scanning of a multi-frame image The distribution of control segments is not exactly the same. The scan timing of each frame image includes: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the interval interval distribution of the touch timing segments in the same frame image .

In the embodiment of the present invention, when the touch display method is driven, the position of the touch timing segments of the multi-frame image is not completely the same, so that the touch display screen can realize the multi-frame image. In the touch display scanning, the gate lines which are subjected to the high voltage time extension are not completely identical due to the insertion of the touch timing segments in each frame image, so that the different gate lines share the influence of the high voltage time extension, thereby slowing down the dark stripes. Appear time, slow down the aging of the touch display screen and prolong the service life.

Optionally, the control positions of the touch timing segments for controlling the multi-frame image are not completely the same: the control positions of the touch timing segments that control the P frame images are different in consecutive P frame images. . Where P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; M is the number of times of touch timing segments in one frame scan time; N is the set adaptation The coefficient, N is a positive integer. When N=1, P is the largest, which can minimize aging and prolong the service life. The specific value of N can be adjusted according to needs.

In the scan time T corresponding to the P frame images, in the prior art, since the positions of the touch timing segments are the same in each frame image, the high voltage delay caused by the touch timing segments in each frame image is It acts on the same one or more gate lines. Wherein, when there is only one touch timing segment in one frame image scanning time, all the images are caused to prolong the high voltage time on the same gate line, when there are multiple touch timing segments in one frame image scanning time All the images cause high-voltage time delay on the same multiple gate lines. The number of gate lines of the high-voltage delay is the same as the number of touch timing segments, one-to-one correspondence.

In the embodiment of the present invention, the distribution positions of the touch timing segments corresponding to each frame image are different in the continuous P frame images, so that the scanning time T corresponding to the P frame images is The position of the touch timing segments is different. In this way, the number of gate lines that have been subjected to the P high-voltage time extension is expanded to P times, and the aging speed is reduced by P times, thereby effectively preventing the aging problem and greatly improving the service life.

Optionally, controlling the location of the touch timing segments of the P frame images to be different includes: controlling the touch timing segments of the consecutive P frame images of the touch display screen according to the array of the set offsets The distribution locations are different.

Wherein, the offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number smaller than P; ΔT is a separate display of the touch display screen in the display timing segment The time of one gate line; the value of i is the numerical index value of the corresponding element, and the P elements are arranged in the set order. The value of i*ΔT is the time offset. The minimum value of i is 0, and the maximum value is P-1.

You can set the array index value of each element to increment or decrement. At this time, the method of performing touch display scanning on any one of the P frame images may be as shown in FIG. 2 .

Referring to FIG. 2, FIG. 2 is a schematic flowchart of a touch display scanning method according to an embodiment of the present invention. The method for performing touch display scanning on any one of the P frame images may be as shown in FIG. 2 . Shown, including:

Step S11: It is judged whether the direction of change of the array index value is increment.

Step S12: If yes, after adding 1 to the array index value corresponding to the previous frame image, the time offset corresponding to the current frame image is obtained.

Step S13: Write the time offset into the shift register of the touch display screen, and drive the current frame image to perform touch display scanning.

As shown in FIG. 2, the touch display scanning method further includes:

Step S14: If the direction of the index value of the array is not incremented, the array index value corresponding to the previous frame image is decremented by one, and the time offset corresponding to the current frame image is obtained.

In the touch display scanning method shown in FIG. 2, when the touch display scanning is started, it is further included before step S11 to determine whether the touch display screen is working. If yes, the process proceeds to step S11, and if not, the process ends. This can avoid continuous touch display scanning when the touch display screen is in a non-working state, thereby reducing energy consumption.

As described above, the direction in which the index value of the array is changed is not incremented or decremented. When the direction of the index value change is not incremented, it is known that the direction of the change is decremented, and only the index value corresponding to the image of the previous frame is subtracted from the specific value. The value of the index value corresponding to the current frame image is obtained, and the time offset of the current frame image is obtained, and the specific value may be a positive integer. In this embodiment, the specific value is 1.

The working principle of the touch display driving method of the present invention will be described below in conjunction with the illustration to illustrate how the touch display driving method slows down aging and improves the service life.

Referring to FIG. 3, FIG. 3 is a schematic diagram showing a display principle of a touch display screen according to an embodiment of the present invention. Figure 3 shows eight gates (including G0-G7) with two touch timing segments during the scanning of one frame of image, ie K=8, M=2. At this time, P=8÷2÷N=4÷N. If the adaptation coefficient N is 1, then P=4.

If fixed in each frame of image, the two touch timing segments are located between G3 and G2, and between G6 and G7. When used for a long time, dark streaks will be produced between G2 and G3 and between G6 and G7 (shown in shaded in Figure 3).

It is set to scan the P frame images for a total scan time of T. If the touch display segment of each frame of image is stopped during the scanning process, the touch timing segments are stopped on the same gate line, and the aging pressure coefficient of the gate line is T/1, if the average falls on the P gate lines, ideal In the state, the aging pressure coefficient on each gate line is T/P. The smaller the aging pressure coefficient received, the longer the life of the gate line and its connected components. During the same period of use, the aging factor can only be reduced by increasing P.

When K=8, M=2, take N=1, then P=4. During the scanning process of four consecutive frames, each gate line receives only one high voltage extension, which can Minimize the aging pressure coefficient.

The time during which the touch display screen scans one gate line separately in the display timing segment is ΔT. For the touch display screen, the number of gate lines is at least several tens of. In one frame of image scanning time, the time occupied by the touch timing segment relative to the display timing segment can be ignored.

For setting the touch display time, ΔT=1/f/K can be considered. f is the scanning frequency. For example, for a scanning frequency of 60 Hz, the resolution is 720 x 1280 (ie, having 1820 gate lines), ΔT = 1/60/1280 seconds.

The offset time of each touch timing segment may not exceed the first time Tmax at most, and is not less than the second time Tmin. The first time Tmax is the time taken for the touch display screen to scan the P-1 gate lines, and the second time Tmin can be set according to the case situation, generally taking Tmin to be 0. In the interval { Tmin, Tmax }, an offset of P adjacent elements having a minimum difference of ΔT is set. For example, in a touch display screen with 8 gate lines, it is required to display 2 touch timing segments in one frame time, then K=8, N=1, M=2, Tmin=0, by P= K/M/N can get P=4.

According to the setting principle of the above array, in the P frame display, an array of four offsets {0*ΔT, 1*ΔT, 2*ΔT, 3*ΔT} can be set.

Referring to FIG. 4, FIG. 4 is a schematic diagram showing the display principle of another touch display screen according to an embodiment of the present invention. When the touch display screen is in the working state, it is assumed that when the first frame image is displayed, the high voltage extension appears at G0 and G4 (as shown in the left figure in FIG. 4). When scanning the second frame image, the time of the first display timing segment of the second frame image is extended by one unit time ΔT, and the stripe position is moved backward by one gate line (as shown in the right picture in FIG. 4). Figure shows). It can be known that the position where the two stripes appear at this time will be shifted back one gate line, and the stripes appear at the positions of G1 and G5.

In the embodiment of the present invention, only the array index value may be incremented during the image scanning process of each frame. At this time, if one frame of image scanning is completed, the array index value is increased by 1 and is greater than the maximum value of the array index value. , the array index value corresponding to the next frame image is the minimum value.

In the embodiment of the present invention, only the array index value may be decremented during the image scanning process of each frame. At this time, if one frame of image scanning is completed, the array index value is less than 1 and is smaller than the minimum value of the array index value. , the array index value corresponding to the next frame image is the maximum value.

It is also possible to set the difference of the array index values of two adjacent elements to be different, that is, not to adopt non-increment or decrement, for example, the order of each element can be set as {1*ΔT, 3*△T, 0* △T, 2*△T} and the like.

When the difference between the array index values of two adjacent elements is different, the method for performing touch display scanning on any one of the P frame images includes: acquiring the time offset of the frame image and the front The difference of the time offset of one frame of image; and the difference register is written into the shift register of the touch display screen to drive the current frame image for touch display scanning.

It is also possible to set the number of elements in the array to 2P, in which case any element in the array is i*ΔT, i is a natural number, the maximum value of i is P-1, and the minimum value is 0. There are two elements of the same size. The arrangement of elements can be increased first, then decreased, or decreased first, then increased. One such array can be used for scanning of 2P frame images in a row.

When K=8, M=2, N=1, the array can be {0*△T, 1*△T, 2*△T, 3*△T, 3* when displaying 2*P frames. △ T, 2 * ΔT, 1 * ΔT, 0 * ΔT }. At this time, the timing of the touch display scan of the touch display screen can be as shown in FIG. 5, and FIG. 5 is a timing diagram of the touch display scan according to the embodiment of the present invention. In Fig. 5, the scanning timing of an 8-frame image (Frame1-Frame8) is shown, in which LCD indicates a display timing segment and TP indicates a touch timing segment.

When K=8, M=2, N=1, if the number of elements in the array is 2P, the array can also be {1*△T, 3*△T, 0*△T, 2*△T, 2 *△T, 0*△T, 3*△T, 1*△T}. In this case, the touch display scanning method may adopt a corresponding scanning process when the difference between the array index values of two adjacent elements is different. At this time, the timing of the touch display scan of the touch display screen can be as shown in FIG. 6 , and FIG. 6 is a timing diagram of another touch display scan according to an embodiment of the present invention. In Fig. 6, the scanning timing of an 8-frame image (Frame1-Frame8) is shown, in which LCD indicates a display timing segment and TP indicates a touch timing segment.

According to the above description, in the touch driving method of the embodiment of the present invention, after the current frame touch display scanning is completed, the touch display scanning method shown in FIG. 2 can automatically adjust the touch timing of the current frame. The insertion position of the segment. During the continuous multi-frame image scanning process, the position of the touch timing segment can be continuously changed to avoid the problem that the same gate line is prolonged in the high-voltage time in continuous multi-frame touch display scanning, thereby The aging effects of the display are equally divided into other gate lines, slowing down the aging problem and increasing the service life.

The embodiment of the present invention provides a touch display driving system. Referring to FIG. 7 , FIG. 7 is a schematic structural diagram of a touch display system according to an embodiment of the present disclosure. The display system includes: a touch display scan module 61, and the touch display scan module 61 is configured to sequentially perform touch display scan of a multi-frame image; the control module 62, the control module 62 is configured to control the touch display scan mode When the group 61 sequentially performs touch display scanning of a multi-frame image, the distribution positions of the touch timing segments for controlling the multi-frame images are not completely the same.

The scan timing of each frame image includes: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the interval interval distribution of the touch timing segments in the same frame image .

Optionally, the control module 62 is configured to control the distribution positions of the touch timing segments of the P frame images in consecutive P frame images. The control module 62 implements this function by controlling the scanning timing of the touch display scanning module 61. Where P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; N is a positive integer, which is a set adaptation coefficient.

The control module 62 is configured to control the distribution positions of the touch timing segments of the consecutive P frame images of the touch display screen according to the set of the offsets. The control module 62 implements this function by controlling the scanning timing of the touch display scanning module 61. Wherein, the offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number less than p; ΔT is a separate display of the touch display screen in the display timing segment The time of a gate line; the value of i is the numerical index value of the corresponding element, and the array index value of each element is incremented or decremented; the value of i*ΔT is the time offset.

Referring to FIG. 8 , FIG. 8 is a schematic structural diagram of a control module according to an embodiment of the present invention. The control module includes: a determining unit 71, configured to determine whether a direction of changing an array index value is incremental; The obtaining unit 72 obtains the time offset corresponding to the current frame image by adding 1 to the array index value i corresponding to the previous frame image when the change direction is incremented. The driving unit 73 and the driving unit 73 are used by the driving unit 73. The time offset is written into the shift register of the touch display screen, and the current frame image is driven to perform touch display scanning. The driving unit 73 realizes this function by controlling the scanning timing of the touch display scanning module 61.

The obtaining unit 72 is further configured to: when the change direction is not increasing, subtract the array index value i corresponding to the previous frame image by one, and obtain the time offset corresponding to the current frame image.

It should be noted that the touch display driving system embodiment is based on the touch display method embodiment, and the same similarities can be referred to each other, and are not described herein. The touch display driving system of the embodiment of the invention can automatically change the position of the touch timing segment in the scanning timing when continuously scanning a plurality of frames of images, thereby reducing the aging pressure coefficient of the same gate line in a unit time. Small, thus slowing down aging and extending service life.

The embodiment of the present invention further provides a touch display screen. As shown in FIG. 9 , FIG. 9 is a schematic structural diagram of a touch display screen according to an embodiment of the present invention. The touch display screen 81 includes: a touch display drive system. 82. The touch display driving system 82 is the touch display driving system described in the above embodiment.

During the scanning process, the touch display screen can automatically change the position where the touch timing segment is inserted, so that the aging pressure coefficient of the same gate line is reduced in a unit time, thereby slowing down aging and prolonging the service life.

The above description of the embodiments provided is to enable a person of ordinary skill in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined in the present invention may be practiced in other embodiments without departing from the spirit or scope of the invention. achieve. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but the

Cs‧‧‧ capacitor
Dn-1, Dn, Dn+1‧‧‧ data line
Gn-1, Gn, Gn+1‧‧‧ gate lines
Pix‧‧‧ element electrode
61‧‧‧Touch display scanning module
62‧‧‧Control Module
71‧‧‧judging unit
72‧‧‧Acquisition unit
73‧‧‧Drive unit
81‧‧‧Touch display
82‧‧‧Touch display drive system
Frame 1-Frame 8‧‧‧ frame image
G0-G7‧‧‧Gate
LCD‧‧‧ display timing segment
TP‧‧‧Touch timing segment
The direction of the change of the array index value of S11‧‧‧ is incremental
S12‧‧‧ After adding 1 to the array index value corresponding to the previous frame image, obtain the time offset corresponding to the current frame image
S13‧‧‧ Write the time offset into the shift register of the touch display screen, drive the current frame image for touch display scanning
S14‧‧‧ After subtracting the array index value corresponding to the previous frame image, the time offset corresponding to the current frame image is obtained.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only Embodiments of the invention, for those of ordinary skill in the art, other drawings may be obtained from the drawings provided without the inventive effort. [Fig. 1] is a schematic structural view of a conventional touch display panel. 2 is a schematic flow chart of a touch display scanning method according to an embodiment of the present invention. [Fig. 3] A schematic diagram of a display principle of a touch display screen according to an embodiment of the present invention. [FIG. 4] FIG. 4 is a schematic diagram showing the display principle of another touch display screen according to an embodiment of the present invention. FIG. 5 is a timing diagram of a touch display scan according to an embodiment of the present invention. FIG. 6 is a timing diagram of another touch display scan according to an embodiment of the present invention. FIG. 7 is a schematic structural diagram of a touch display system according to an embodiment of the present invention. FIG. 8 is a schematic structural diagram of a control module according to an embodiment of the present invention. FIG. 9 is a schematic structural diagram of a touch display screen according to an embodiment of the present invention.

The direction of the change of the array index value of S11‧‧‧ is incremental

S12‧‧‧ After adding 1 to the array index value corresponding to the previous frame image, obtain the time offset corresponding to the current frame image

S13‧‧‧ Write the time offset into the shift register of the touch display screen, drive the current frame image for touch display scanning

S14‧‧‧ After subtracting the array index value corresponding to the previous frame image, the time offset corresponding to the current frame image is obtained.

Claims (12)

A touch display driving method is used for a touch display screen. The method includes: when the touch display scan of the multi-frame image is sequentially performed, the distribution positions of the touch timing segments for controlling the frame images are not completely the same; The scanning timing of each frame image includes: a display timing segment and M touch timing segments, wherein a and M are positive integers; if M is greater than 1, the touch timings in the same frame image Segment interval distribution. The touch display driving method of claim 1, wherein the distribution of the touch timing segments for controlling the frame images is not completely the same: the controlling the P frames in consecutive P frame images The distribution positions of the touch timing segments of the image are different; wherein P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; N is a set adaptation The coefficient, N is a positive integer. The touch display driving method of claim 2, wherein the controlling the position of the touch timing segments of the P frame images is different: comprising: controlling the touch display screen according to the array of the set offset The distribution positions of the touch timing segments of the consecutive P frame images are different; wherein the offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number smaller than P; ΔT is a time when the touch display screen scans a gate line separately in the display timing segment; the value of i is an array index value of the corresponding element; P elements are arranged in the set order; The value of i*ΔT is the time offset. The touch display driving method of claim 3, wherein the array index value of each element is incremented or decremented; the method for performing touch display scanning on any one of the P frame images comprises: determining the Whether the direction of the change of the array index value is incremented; if yes, after adding the array index value i corresponding to the previous frame image to 1, the time offset corresponding to the current frame image is obtained; and the time offset is written. The shift register of the touch display screen drives the current frame image for touch display scanning. The touch display driving method of claim 4, further comprising: if the direction of the change of the array index value i is not increasing, subtracting the array index value i corresponding to the previous frame image by 1 Time offset. The touch display driving method of claim 3, wherein the difference between the array index values of the two adjacent elements is different; and the touch display scan is performed on any one of the P frame images. The method includes: obtaining a difference between a time offset of the frame image and a time offset of the image of the previous frame; and writing the difference to the shift register of the touch display screen to drive the current frame The image is scanned for touch display. A touch display driving system includes: a touch display scanning module, wherein the touch display scanning module is used for sequentially performing touch display scanning of a plurality of frames of images; and a control module, wherein the control module is used for Controlling the touch display scanning module to sequentially control the touch display of the multi-frame image, the distribution positions of the touch timing segments for controlling the frame images are not completely the same; wherein, the scanning timing of each frame image All include: a display timing segment and M touch timing segments, a and M are positive integers; if M is greater than 1, the touch timing segments are spaced apart in the same frame image. The touch display driving system of claim 7, wherein the control module is configured to control the distribution positions of the touch timing segments of the P frame images in consecutive P frame images; Where P is a positive integer not greater than K÷M÷N; K is the number of gate lines of the touch display screen; N is a positive integer, and N is a set adaptation coefficient. The touch display driving system of claim 8, wherein the control module is configured to control a distribution position of the touch timing segments of the continuous P frame images of the touch display screen according to the array of the set offsets. The offset array has P different elements; in the offset array, any element is i*ΔT, i is a natural number smaller than P; ΔT is the touch display screen The time at which a gate line is individually scanned during the display timing segment; the value of i is the numerical index value of the corresponding element, and the array index value of each element is incremented or decremented; the value of i*ΔT is the time offset. The touch display driving system of claim 9, wherein the control module comprises: a determining unit, configured to determine whether the direction of change of the array index value is incremented; and an acquiring unit, the acquiring unit is When the direction of the change is incrementing, the time offset corresponding to the current frame image is obtained by adding 1 to the array index value corresponding to the image of the previous frame; and a driving unit, the driving unit is configured to offset the time The shift register of the touch display screen is written to drive the current frame image for touch display scanning. The touch display driving system of claim 10, wherein the acquiring unit is further configured to: after the change direction is not incremented, subtract the array index value corresponding to the previous frame image by 1 Time offset. A touch display screen, comprising: the touch display drive system according to any one of claims 7 to 11.