CN104598089B - Array base palte, touch-screen and driving method and display device - Google Patents

Abstract

The array substrate, touch screen, driving method and display device provided by the present invention, the array substrate includes: a base substrate on which gate lines, data lines, first common electrodes and second common electrodes are formed, and the second common electrodes It includes: a horizontal electrode group located on the same row and a metal jumper connecting two adjacent horizontal electrode groups on the same row, the first common electrode includes: a vertical electrode group, and a contactor A switching circuit that controls the conduction of the scanning phase so that the first common electrode and the data line are connected in parallel. In the touch scanning stage, the first common electrode and the data line are connected in parallel through the conduction of the switch circuit, so that the equivalent resistance of the first common electrode is reduced, and the signal-to-noise ratio of the first common electrode is indirectly improved, thereby affecting the touch control. The monitoring of the voltage signal coupled out of the sensing electrode is more accurate, so as to realize the precise positioning of the touch point.

Description

Array substrate, touch screen, driving method, and display device

The present invention is a divisional application of the Chinese invention patent application with application number 201310211448.3.

technical field

The present invention relates to the field of display technology, in particular to an array substrate, a touch screen, a driving method and a display device.

Background technique

With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread in people's lives. Currently, touch screens can be classified into resistive, capacitive, infrared and surface acoustic wave types according to their working principles. Among them, the capacitive in-cell touch screen is sought after by the industry as a new favorite due to its unique touch principle, high sensitivity, long life, high light transmittance and other advantages.

The traditional capacitive embedded touch screen is realized by directly adding touch scanning lines and touch sensing lines on the TFT (Thin Film Transistor, Thin Film Field Effect Transistor) array substrate, that is, making two layers of mutually different layers on the surface of the TFT array substrate Intersecting strip-shaped ITO electrodes, these two layers of ITO (Indium Tin Oxides, indium tin metal oxide) electrodes are respectively used as touch scanning lines and touch sensing lines of the touch screen, and sensing capacitance is formed at the intersection of two ITO electrodes on different surfaces . When the human body touches, the capacitance value of the sensing capacitor changes, thereby changing the voltage signal coupled from the touch sensing line, and the position of the touch point can be determined according to the change of the voltage signal.

This method of fabricating two layers of strip-shaped ITO electrodes intersecting on different planes on the surface of the TFT array substrate will increase the thickness of the TFT array substrate, require additional power to drive the touch structure, and reduce the transmittance of the array substrate.

At present, it has become a mainstream research direction in the industry to realize the touch function by reusing the components in the existing display screen.

Figure 1 is a schematic structural view of an array substrate provided by the prior art, and Figure 2 is a partially enlarged view of structure A shown in Figure 1, as shown in Figures 1 and 2, the array substrate includes: a base substrate 1, a base substrate Several common electrode bases 4 are formed on 1, and the common electrode bases 4 are grouped by connecting the common electrode bases 4 with common electrode lines (Vcom lines), and the common electrode bases 4 are divided into horizontal electrode groups and vertical electrode groups. The lines include a horizontal electrode line 301 (H-Vcom line) and a vertical electrode line 201 (V-Vcom line), wherein a vertical electrode group is formed between two horizontally adjacent horizontal electrode groups, and a vertical electrode group is formed between two vertically adjacent horizontal electrode groups. There is an open circuit between two horizontal electrode groups, and at least one horizontal electrode group is formed between two adjacent vertical electrode groups. Horizontally adjacent horizontal electrode groups can be connected by metal jumpers 302 to form horizontal common electrodes 3 , and longitudinal electrode groups in the vertical direction alone form vertical common electrodes 2 , and metal jumper wires 302 bypass vertical common electrodes 2 .

In the display scanning stage, the horizontal common electrode 3 and the vertical common electrode 2 cooperate with the pixel unit to realize the display function.

In the touch scanning phase, one of the horizontal common electrodes 3 and the vertical common electrodes 2 serves as a touch scanning line, and the other serves as a touch sensing line. The metal jumper 302 in the horizontal common electrode 3 and the common electrode base 4 in the vertical common electrode 2 or the longitudinal electrode line 201 form a sensing capacitor at the intersection. When the human body touches, the capacitance value of the sensing capacitor changes, thereby changing the touch The voltage signal coupled from the sensing line can determine the position of the touch point according to the change of the voltage signal.

In addition, in the prior art, two laterally adjacent lateral electrode groups can also be connected through the lateral electrode line 301, and the lateral electrode line 301 bypasses the vertical common electrode 2. In the touch scanning stage, the lateral electrode line 301 and the vertical The common electrode base 4 or the longitudinal electrode lines 201 inside the common electrode 2 form inductive capacitors at intersections. When the human body touches, the capacitance value of the sensing capacitor changes, thereby changing the voltage signal coupled from the touch sensing line, and the position of the touch point can be determined according to the change of the voltage signal.

However, there are deficiencies in the prior art solutions. Among them, in the touch scanning stage, since the common electrode substrate and the common electrode lines are made of ITO material, the resistance of the horizontal common electrode and the vertical common electrode is relatively large, so that the resistance of the touch scanning line and the touch sensing line is relatively large. , which in turn leads to unfavorable detection of the voltage signal coupled out of the touch sensing line, thereby causing inaccurate positioning of the touch point.

Contents of the invention

The present invention provides an array substrate, a touch screen, a driving method, and a display device, which improves the technical solution that the resistance of the touch scanning electrode and the touch sensing electrode is relatively large, and reduces the resistance of the touch scanning electrode or the touch sensing electrode. The signal-to-noise ratio of the electrode is indirectly improved, making the monitoring of the voltage signal more accurate, thereby realizing precise positioning of the touch point.

To achieve the above object, the present invention provides an array substrate, which includes: a base substrate, on which gate lines, data lines, first common electrodes and second common electrodes are formed, and the gate lines and the data lines define pixel units, each of which includes a corresponding common electrode base, and all the common electrode bases are divided into a plurality of horizontal electrode groups arranged in the row direction and a plurality of horizontal electrode groups arranged in the column direction. A plurality of vertical electrode groups, the second common electrode includes: the horizontal electrode group on the same row and a metal jumper connecting two adjacent horizontal electrode groups on the same row, the first common electrode includes: In the electrode group, a switch circuit is provided between the first common electrode and the data line to conduct in the touch scanning phase so that the first common electrode and the data line are connected in parallel.

Optionally, the switch circuit includes: a first switch subcircuit and a second switch subcircuit, the first switch subcircuit is connected to one end of the first common electrode and one end of the data line, and the first switch subcircuit is connected to one end of the first common electrode and one end of the data line. The second switch sub-circuit is connected with the other end of the first common electrode and the other end of the data line.

Optionally, the first switch sub-circuit includes: at least one first switch transistor, a first pole of the first switch transistor is connected to one end of the data line, and a second pole of the first switch transistor is connected to The first common electrode is connected, the gate of the first switch tube is connected to the switch signal line that provides the turn-on signal during the touch scanning phase; the second switch sub-circuit includes: at least one second switch tube, the The first pole of the second switch transistor is connected to one end of the data line, the second pole of the second switch transistor is connected to the first common electrode, and the gate of the second switch transistor is connected to the switch signal line connection.

Optionally, the data lines include a first data line corresponding to the first common electrode and a second data line corresponding to the second common electrode, and the first pole of the first switch transistor is connected to the first pole of the first switch transistor. One end of the first data line is connected, and the first pole of the second switch transistor is connected with the other end of the first data line.

Optionally, the first switch transistors are in one-to-one correspondence with the first data lines, and the second switch transistors are in one-to-one correspondence with the first data lines.

Optionally, the first switch subcircuit is arranged on the base substrate or in a drive circuit outside the base substrate, and the second switch subcircuit is arranged on the base substrate or It is arranged in the driving circuit outside the base substrate.

Optionally, in the touch scanning phase, the first common electrode is a touch scanning electrode, and the second common electrode is a touch sensing electrode; or, the first common electrode is a touch sensing electrode, and the The second common electrode is a touch scanning electrode.

To achieve the above object, the present invention provides a touch screen, which includes: an array substrate and a color filter substrate, the array substrate and the color filter substrate are arranged oppositely, and the array substrate adopts the above-mentioned array substrate.

To achieve the above object, the present invention provides a method for driving a touch screen, the method comprising:

In the touch scanning phase, the switch circuit is turned on, so that the first common electrode and the data line are connected in parallel, and the touch scanning signal is loaded on the first common electrode or the second common electrode;

In the display scan stage, the switch circuit is disconnected, so that the first common electrode and the data line are disconnected, the display scan signal scans the gate lines row by row, and the corresponding data line is loaded with the display scan signal.

To achieve the above object, the present invention provides a display, which includes the above touch screen.

In the technical solution of the array substrate, touch screen, driving method and display device provided by the present invention, the array substrate includes: a base substrate on which gate lines, data lines, first common electrodes and second common electrodes are formed, and the second A common electrode includes: a horizontal electrode group located on the same row and a metal jumper connecting two adjacent horizontal electrode groups on the same row, and the second common electrode includes: a vertical electrode group, which is arranged between the first common electrode and the data line There is a switch circuit that is turned on during the touch scanning phase to connect the first common electrode and the data line in parallel. In the touch scanning phase, the first common electrode and the data line are connected in parallel through the conduction of the switch circuit, so that the equivalent resistance of the first common electrode is reduced, and the signal-to-noise ratio of the first common electrode is indirectly improved, thereby affecting the touch control. The monitoring of the voltage signal coupled out of the sensing electrode is more accurate, so as to realize the precise positioning of the touch point.

Description of drawings

FIG. 1 is a schematic structural view of an array substrate provided by the prior art;

Fig. 2 is a partial enlarged view of structure A shown in Fig. 1;

FIG. 3 is a schematic structural diagram of an array substrate provided in Embodiment 1 of the present invention;

Fig. 4 is a partially enlarged view of the B structure shown in Fig. 3;

5 is a schematic structural diagram of a first switch sub-circuit in Embodiment 1 of the present invention;

FIG. 6 is a working sequence diagram of the array substrate of the present invention.

Explanation of reference signs

1-substrate substrate; 2-vertical common electrode;

201-longitudinal electrode line; 3-horizontal common electrode;

301-horizontal electrode wire; 302-metal jumper wire;

4-common electrode substrate; 5-first common electrode;

501-longitudinal electrode group; 6-second common electrode;

601-horizontal electrode group; 701-first switch subcircuit;

702-second switch sub-circuit; 8-data line;

801-the first data line; 802-the second data line;

9-Switch signal line.

detailed description

In order for those skilled in the art to better understand the technical solution of the present invention, the array substrate, touch screen, driving method and display device provided by the present invention will be described in detail below with reference to the accompanying drawings.

Embodiment one

Figure 3 is a schematic structural view of the array substrate provided by Embodiment 1 of the present invention, and Figure 4 is a partial enlarged view of the structure B shown in Figure 3, as shown in Figures 3 and 4, the array substrate includes: Gate lines, data lines 8, first common electrodes 5 and second common electrodes 6 are formed on the base substrate 1, the gate lines and data lines 8 define pixel units, each pixel unit includes a corresponding common electrode base 4, all The common electrode base 4 is divided into a plurality of transverse electrode groups 601 arranged in the row direction and a plurality of longitudinal electrode groups 501 arranged in the column direction, and the second common electrode 6 includes: the transverse electrode groups 601 on the same row and connections The metal jumpers 302 of the two adjacent horizontal electrode groups 601 on the same row, the first common electrode 6 includes: a vertical electrode group 501, and a connection between the first common electrode 5 and the data line 8 is provided for conduction during the touch scanning phase. A switch circuit that connects the first common electrode 5 and the data line 8 in parallel.

Wherein, gate lines and pixel units are not shown in the drawings. The first common electrode 5 includes a longitudinal electrode group 501, the longitudinal electrode group 501 includes a common electrode base 4 and a common electrode line connected to the common electrode base 4, the second common electrode 6 includes a horizontal electrode group 601 and a metal jumper 302, and the horizontal electrode group 601 includes a common electrode base 4 and common electrode lines connected to the common electrode base 4 , wherein the common electrode lines include longitudinal electrode lines 201 and transverse electrode lines 301 .

The pixel unit includes a TFT and a pixel electrode, the gate line is connected to the gate of the TFT, the data line 8 is connected to the source of the TFT, and the pixel electrode is connected to the drain of the TFT. In the display scanning phase, the gate lines are scanned row by row, so that the TFTs of a row are in a conduction state, and the pixel electrodes of this row are controlled by the corresponding data lines to display.

Optionally, the switch circuit includes: a first switch subcircuit 701 and a second switch subcircuit 702, the first switch subcircuit 701 is respectively connected to one end of the first common electrode 5 and one end of the data line 8, and the second switch subcircuit 702 are respectively connected to the other end of the first common electrode 5 and the other end of the data line 8 . Switch sub-circuits are provided at both ends of the first common electrode 5 , and the parallel structure of the first common electrode 5 and the data line 8 is realized through the conduction of the first switch sub-circuit 701 and the second switch sub-circuit 702 .

5 is a schematic structural diagram of the first switch sub-circuit in Embodiment 1 of the present invention. As shown in FIG. 5 , the first switch sub-circuit includes: at least one first switch tube, the first pole of the first switch tube and the data One end of the line 8 is connected, the second pole of the first switch tube is connected to the first common electrode 5, and the gate of the first switch tube is connected to the switch signal line 9 that provides the turn-on signal during the touch scanning phase; the second switch sub-circuit It includes: at least one second switch tube, the first pole of the second switch tube is connected to one end of the data line 8, the second pole of the second switch tube is connected to the first common electrode 5, the gate of the second switch tube is connected to the switch The signal line 9 is connected.

When the first switch sub-circuit only includes a first switch tube, the data lines 8 corresponding to the first common electrode 5 are all connected to the first pole of the first switch tube, and the second pole of the first switch tube is connected to the first common electrode. Electrode 5 is connected. At this time the case is not given a corresponding drawing.

Wherein the first switch tube and the second switch tube can both be TFTs, then the gate of the TFT is connected to the switch signal line 9, the source is connected to the data line 8, the drain is connected to the first common electrode 5, or the drain of the TFT is connected to the data line 8. The source is connected to the first common electrode 5 . Of course, other switch tubes that can realize the present invention can also be used, such as MOS tubes, etc.

It should be noted that the second switch subcircuit in Embodiment 1 of the present invention may also adopt the structure shown in FIG. 5 .

Optionally, as shown in FIG. 3 and FIG. 4 , the data line 8 includes a first data line 801 corresponding to the first common electrode 5 and a second data line 802 corresponding to the second common electrode. The first pole of the second switching transistor is connected to one end of the first data line 801 , and the first pole of the second switching transistor is connected to the other end of the first data line 801 .

Optionally, the first switch transistors correspond to the first data lines 801 one-to-one, and the second switch transistors correspond to the first data lines 801 one-to-one. There are multiple first data lines 801 provided in the area corresponding to the first common electrode, the first switch sub-circuit 701 has multiple first switch tubes, the second switch sub-circuit 702 has multiple second switch tubes, and each first data line Both ends of the line 801 are respectively connected to a corresponding first switching transistor and a corresponding second switching transistor. When the first switch sub-circuit includes multiple first switch transistors, each first switch transistor may correspond to one first data line 801 .

Optionally, the first switch sub-circuit 701 is disposed on the base substrate or in a drive circuit outside the base substrate, and the second switch sub-circuit 702 is disposed on the base substrate 1 or outside the base substrate in the drive circuit. What Fig. 3 shows is the situation that both the first switch subcircuit 701 and the second switch subcircuit 702 are arranged on the base substrate 1, the first switch subcircuit 701 is arranged in the driving circuit or the second switch subcircuit 702 is arranged in the The situation in the driving circuit is not shown in the drawings.

Optionally, in the touch scanning phase, the first common electrode 5 is a touch scanning electrode, and the second common electrode 6 is a touch sensing electrode; or, the first common electrode 5 is a touch sensing electrode, and the second common electrode 6 is a touch sensing electrode. Scan electrodes for touch. In the touch scanning phase, the first common electrode 5 is connected in parallel with the data line 8, the first common electrode 5 connected in parallel with the data line 8 is a touch scanning electrode, and the second common electrode 6 is a touch sensing electrode, or is connected in parallel with a data line The first common electrode 5 of 8 is a touch sensing electrode, and the second common electrode 6 is a touch scanning electrode. More specifically, the metal jumper 302 in the second common electrode 6 and the common electrode base 4 in the first common electrode 5 form an inductive capacitor at the intersection, or the metal jumper 302 in the second common electrode 6 and the first common The longitudinal electrode lines 201 in the electrodes 5 form inductive capacitors at intersections, or the metal jumpers 302 in the second common electrodes 6 and the data lines 8 in the first common electrodes 5 form inductive capacitors at the intersections. When the human body touches, the capacitance value of the sensing capacitor changes, thereby changing the voltage signal coupled from the touch sensing electrode, and the position of the touch point can be determined according to the change of the voltage signal.

Fig. 6 is a working timing diagram of the array substrate of the present invention. As shown in Fig. 6, in the scanning process of one frame, the scanning signal can be divided into a reset phase (reset), a touch scanning phase (Touch Scan) and a display scanning phase (Display Scan) has three parts. Wherein, in the reset phase, the vertical synchronization signal is converted from high level to low level, and the switch signal is converted from low level to high level, that is, the conduction of the switch circuit is realized, and then the first common electrode and the data line are connected in parallel, At the same time, the common voltage is not loaded on the first common electrode and the second common electrode, and the data display signal is not loaded on the data line (Data line). It is displayed that the scan signal has completed the scanning of the nth gate line. In order to prevent the voltage in the gate line from affecting the voltage signal in the touch scanning phase, the voltage signal in the gate line is reset. It should be noted that in the reset phase, the first data line, the second data line, the first common electrode and the second common electrode can be loaded with any DC voltage signal, or not loaded with any signal. Indicates the case where no signal is applied during the reset phase. In the touch scanning phase, since the switch circuit remains on, the first common electrode and the data line are connected in parallel, and the first common electrode connected in parallel with the data line is used as a touch scanning electrode or a touch sensing electrode, and the second common electrode is correspondingly used as a touch sensing electrode. Sensing electrodes or touch scanning electrodes. For example, when the first common electrode connected in parallel with the first data line is used as a touch scanning electrode, and the second common electrode is used as a touch sensing electrode, the first data line and the first common electrode are loaded with a touch scanning signal, and the second common electrode is used as a touch sensing electrode. The electrodes will couple a touch sensing signal with the same frequency as the touch scanning signal. When the display panel is touched, the touch sensing signal coupled by the second public electricity will change. By detecting the changed touch sensing signal, it can be accurately Position the touch point. In the display scanning stage, the vertical synchronous signal is converted from low level to high level, and the switch signal is converted from high level to low level, that is, the switch circuit is disconnected, and the display scan signal starts from the first row of grid lines to the grid line by line. The lines are scanned, the common voltage is reloaded on the first common electrode and the second common electrode, the data display signal is loaded on the first data line and the second data line, and the data display signal controls the pixel electrode to display. In the actual process of driving the array substrate, the frequency of the data display signal loaded on the first data line or the second data line in the display scan phase is generally lower than the frequency of the touch scan signal loaded on the touch scan electrode in the touch scan phase .

In the array substrate provided by Embodiment 1 of the present invention, a switch circuit is provided between the first common electrode and the data line to be turned on during the touch scanning phase so that the first common electrode and the data line are connected in parallel. In the touch scanning stage, the first common electrode and the data line are connected in parallel through the conduction of the switch circuit, so that the equivalent resistance of the first common electrode is reduced, and the signal-to-noise ratio of the first common electrode is indirectly improved, thereby affecting the touch sensing. The monitoring of the voltage signal coupled from the electrode is more accurate, and the precise positioning of the touch point is realized.

Embodiment two

Embodiment 2 of the present invention provides a touch screen. The touch screen includes: an array substrate and a color filter substrate. The array substrate and the color filter substrate are arranged oppositely. The described content will not be repeated here.

The touch screen provided by Embodiment 2 of the present invention includes an array substrate and a color filter substrate. The array substrate includes a base substrate on which gate lines, data lines, first common electrodes, and second common electrodes are formed. A switch circuit is provided between the common electrode and the data line to connect the first common electrode and the data line in parallel during the touch scanning phase. The data lines are connected in parallel, so that the equivalent resistance of the first common electrode is reduced, and the signal-to-noise ratio of the first common electrode is indirectly improved, so that the monitoring of the voltage signal coupled from the touch sensing electrode is more accurate, and the touch point is realized. precise positioning.

Embodiment three

Embodiment 3 of the present invention provides a driving method of a touch screen, the driving method includes: in the touch scanning phase, the switch circuit is turned on, so that the first common electrode and the data line are connected in parallel, and the first common electrode or the second common electrode is loaded Touch scanning signal; in the display scanning stage, the switch circuit is disconnected, so that the first common electrode and the data line are disconnected, the display scanning signal scans the gate lines row by row, and the corresponding data line is loaded with the display scanning signal.

In the driving method of the touch screen provided by Embodiment 3 of the present invention, a switch circuit is provided between the first common electrode and the data line to conduct in the touch scanning phase so that the first common electrode and the data line are connected in parallel. In the control scanning stage, the first common electrode and the data line are connected in parallel through the conduction of the switch circuit, thereby reducing the equivalent resistance of the first common electrode, indirectly improving the signal-to-noise ratio of the first common electrode, and then coupling the touch sensing electrode The monitoring of the output voltage signal is more accurate, and the precise positioning of the touch point is realized.

Embodiment four

Embodiment 4 of the present invention provides a display device, which includes the touch screen provided in Embodiment 3 above. For details, refer to the second embodiment above, and details are not repeated here. The display device may be any product or component with a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a liquid crystal TV, a liquid crystal display, a digital photo frame, a mobile phone, and a tablet computer.

The display provided by Embodiment 4 of the present invention includes a touch screen, the touch screen includes an array substrate and a color filter substrate, the array substrate includes a base substrate, and gate lines, data lines, first common electrodes, and second common electrodes are formed on the base substrate. Electrodes, a switch circuit is provided between the first common electrode and the data line to conduct in the touch scanning phase so that the first common electrode and the data line are connected in parallel. A common electrode is connected in parallel with the data line, so that the equivalent resistance of the first common electrode is reduced, and the signal-to-noise ratio of the first common electrode is indirectly improved, so that the monitoring of the voltage signal coupled out of the touch sensing electrode is more accurate, realizing Precise positioning of touch points.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. An array substrate, characterized in that it comprises: a base substrate, on which gate lines extending along the row direction, data lines extending along the column direction, first common electrodes and second common electrodes are formed , the gate lines and the data lines define pixel units, each of the pixel units includes a corresponding common electrode base, and all the common electrode bases are divided into a plurality of horizontal electrode groups arranged in a row direction and A plurality of vertical electrode groups arranged in the column direction, the second common electrode includes: the horizontal electrode group on the same row and a metal jumper connecting two adjacent horizontal electrode groups on the same row, the first The common electrode includes: a vertical electrode group, and a switch circuit is provided between the first common electrode and the data line to conduct in the touch scanning phase so that the first common electrode and the data line are connected in parallel. 2. The array substrate according to claim 1, wherein the switch circuit comprises: a first switch sub-circuit and a second switch sub-circuit; The first switch subcircuit is connected to one end of the first common electrode and one end of the data line, and the second switch subcircuit is connected to the other end of the first common electrode and the other end of the data line connect. 3. The array substrate according to claim 2, characterized in that, The first switch sub-circuit includes: at least one first switch tube, the first pole of the first switch tube is connected to one end of the data line, the second pole of the first switch tube is connected to the first The common electrode is connected, and the gate of the first switch tube is connected to the switch signal line that provides the turn-on signal during the touch scanning phase; The second switch sub-circuit includes: at least one second switch tube, the first pole of the second switch tube is connected to one end of the data line, the second pole of the second switch tube is connected to the first The common electrode is connected, and the gate of the second switch transistor is connected to the switch signal line. 4. The array substrate according to claim 3, wherein the data lines include a first data line corresponding to the first common electrode and a second data line corresponding to the second common electrode , the first pole of the first switch transistor is connected to one end of the first data line, and the first pole of the second switch transistor is connected to the other end of the first data line. 5 . The array substrate according to claim 4 , wherein the first switch transistors are in one-to-one correspondence with the first data lines, and the second switch transistors are in one-to-one correspondence with the first data lines. 6. The array substrate according to claim 3, characterized in that, The first switch sub-circuit is arranged on the base substrate or in a driving circuit outside the base substrate; The second switch sub-circuit is disposed on the base substrate or in a driving circuit outside the base substrate. 7. The array substrate according to claim 3, characterized in that, The first common electrode is a touch scanning electrode, and the second common electrode is a touch sensing electrode; or, The first common electrode is a touch sensing electrode, and the second common electrode is a touch scanning electrode. 8. A touch screen, comprising: an array substrate and a color filter substrate, the array substrate and the color filter substrate are arranged opposite to each other, wherein the array substrate adopts the array substrate according to any one of claims 1 to 7 . 9. A driving method of a touch screen as claimed in claim 8, characterized in that, The methods include: In the touch scanning phase, the switch circuit is turned on, so that the first common electrode and the data line are connected in parallel, and the touch scanning signal is loaded on the first common electrode or the second common electrode; In the display scanning stage, the switch circuit is disconnected, so that the first common electrode and the data line are disconnected, the display scanning signal scans the gate lines row by row, and the corresponding data line is loaded with the display scanning signal. 10. A display device, comprising: the touch screen according to claim 8.