CN104598089A - Array substrate, touch screen, drive method and display device - Google Patents
Array substrate, touch screen, drive method and display device Download PDFInfo
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- CN104598089A CN104598089A CN201510053611.7A CN201510053611A CN104598089A CN 104598089 A CN104598089 A CN 104598089A CN 201510053611 A CN201510053611 A CN 201510053611A CN 104598089 A CN104598089 A CN 104598089A
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- 239000000758 substrate Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 230000006698 induction Effects 0.000 abstract description 11
- 238000012216 screening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Position Input By Displaying (AREA)
Abstract
The invention provides an array substrate, a touch screen, a drive method and a display device. The array substrate comprises a substrate body, wherein a gird line, a data line, a first common electrode and a second common electrode are formed on the substrate body; the second common electrode comprises transverse electrode groups positioned in the same row and metal jumper wires for connecting every two adjacent transverse electrode groups on the same row; the first common electrode comprises a longitudinal electrode group; a switching circuit which is switched on at a touch screening stage so as to ensure that the first common electrode and the data line are connected in parallel is arranged between the first common electrode and the data line. In the touch scanning stage, the switching circuit is switched on, so that the first common electrode is connected with the data line in parallel, and thus equivalent resistance of the first common electrode is reduced, the signal to noise rate of the first common electrode is indirectly increased, further, a voltage signal coupled from a touch induction electrode is monitored more accurately, and a touch point can be positioned accurately.
Description
The invention is a divisional application of the Chinese patent application with the application number of 201310211448.3.
Technical Field
The invention relates to the technical field of display, in particular to an array substrate, a touch screen, a driving method and a display device.
Background
With the rapid development of display technology, Touch Screen panels (Touch screens) have gradually spread throughout the lives of people. At present, touch screens can be classified according to the working principle: resistive, capacitive, infrared, and surface acoustic wave. Among them, the capacitive embedded (in cell) touch screen is a new favorite in the industry by virtue of its unique touch principle, high sensitivity, long service life, high light transmittance and the like.
The traditional capacitive embedded touch screen is realized by directly additionally adding a touch scanning line and a touch sensing line on a Thin Film Transistor (TFT) array substrate, namely, two layers of strip ITO electrodes with mutually different surfaces intersecting are manufactured on the surface of the TFT array substrate, the two layers of ITO electrodes are respectively used as the touch scanning line and the touch sensing line of the touch screen, and a sensing capacitor is formed at the intersection of the different surfaces of the two ITO electrodes. When a human body touches, the capacitance value of the induction capacitor changes, so that a voltage signal coupled out by the touch induction line is changed, and the position of the touch point can be determined according to the change of the voltage signal.
The method for manufacturing the two layers of strip-shaped ITO electrodes with mutually different surfaces intersecting on the surface of the TFT array substrate increases the thickness of the TFT array substrate, needs extra electric power to drive a touch structure and reduces the transmittance of the array substrate.
At present, the function of completing touch control by reusing the elements in the existing display screen becomes the mainstream research direction in the industry.
Fig. 1 is a schematic structural diagram of an array substrate provided in the prior art, and fig. 2 is a partial enlarged view of a structure a shown in fig. 1, where as shown in fig. 1 and fig. 2, the array substrate includes: the substrate comprises a substrate base plate 1, wherein a plurality of common electrode matrixes 4 are formed on the substrate base plate 1, the common electrode matrixes 4 are grouped in a mode of being connected with the common electrode matrixes 4 through common electrode wires (Vcom wires), the common electrode matrixes 4 are divided into transverse electrode groups and longitudinal electrode groups, the common electrode wires comprise transverse electrode wires 301(H-Vcom wires) and longitudinal electrode wires 201(V-Vcom wires), the longitudinal electrode groups are formed between two transverse electrode groups which are adjacent in the transverse direction, the two transverse electrode groups which are adjacent in the longitudinal direction are in open circuit, and at least one transverse electrode group is formed between two adjacent longitudinal electrode groups. The horizontal common electrodes 3 can be formed by connecting the horizontal electrode groups which are adjacent in the horizontal direction through the metal jumper wires 302, the vertical electrode groups in the vertical direction independently form the vertical common electrodes 2, and the metal jumper wires 302 bypass the 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 stage, one of the horizontal common electrode 3 and the vertical common electrode 2 is used as a touch scanning line, and the other is used as a touch sensing line. The metal jumper 302 in the horizontal common electrode 3 and the common electrode base 4 or the longitudinal electrode wire 201 in the vertical common electrode 2 form an induction capacitor at the intersection, when a human body touches the induction capacitor, the capacitance value of the induction capacitor changes, so that a voltage signal coupled out by the touch induction wire is changed, and the position of a touch point can be determined according to the change of the voltage signal.
In addition, in the prior art, two transversely adjacent transverse electrode groups may also be connected by a transverse electrode line 301, the transverse electrode line 301 bypasses the vertical common electrode 2, and in the touch scanning stage, the transverse electrode line 301 and the common electrode base 4 or the longitudinal electrode line 201 inside the vertical common electrode 2 form an inductive capacitance at the intersection. When a human body touches, the capacitance value of the induction capacitor changes, so that a voltage signal coupled out by the touch induction line is changed, and the position of the touch point can be determined according to the change of the voltage signal.
However, the prior art solutions have deficiencies. In the touch scanning stage, the common electrode substrate and the common electrode wire are made of ITO materials, so that the resistances of the horizontal common electrode and the vertical common electrode are relatively large, and the resistances of the touch scanning line and the touch sensing line are relatively large, which causes unfavorable detection of voltage signals coupled from the touch sensing line, and further causes inaccurate positioning of the touch point.
Disclosure of Invention
The invention provides an array substrate, a touch screen, a driving method and a display device, which improve the technical scheme that the resistance of a touch scanning electrode and a touch sensing electrode is larger, reduce the resistance of the touch scanning electrode or the touch sensing electrode, indirectly improve the signal-to-noise ratio of the electrode, enable the monitoring of a voltage signal to be more accurate and further realize the accurate positioning of a touch point.
In order to achieve the above object, the present invention provides an array substrate, including: the liquid crystal display panel comprises a substrate base plate, wherein a grid line, a data line, a first public electrode and a second public electrode are formed on the substrate base plate, the grid line and the data line define pixel units, each pixel unit comprises a corresponding public electrode base body, all the public electrode base bodies are divided into a plurality of transverse electrode groups arranged in a row direction and a plurality of longitudinal electrode groups arranged in a column direction, and the second public electrode comprises: the horizontal electrode group that is located on same row and the metal jumper wire of two adjacent horizontal electrode groups on connecting same row, first public electrode includes: and a switch circuit which is conducted in a touch scanning stage to enable the first common electrode and the data line to be connected in parallel is arranged between the first common electrode and the data line.
Optionally, the switching circuit comprises: the first switch sub-circuit is connected with one end of the first public electrode and one end of the data line, and the second switch sub-circuit is connected with the other end of the first public electrode and the other end of the data line.
Optionally, the first switch sub-circuit comprises: the first pole of the first switch tube is connected with one end of the data line, the second pole of the first switch tube is connected with the first common electrode, and the grid electrode of the first switch tube is connected with a switch signal line which provides a starting signal in a touch scanning stage; the second switch sub-circuit comprises: and a first pole of the second switch tube is connected with one end of the data line, a second pole of the second switch tube is connected with the first common electrode, and a grid electrode of the second switch tube is connected with the switch signal line.
Optionally, the data line includes a first data line disposed corresponding to the first common electrode and a second data line disposed corresponding to the second common electrode, a first pole of the first switching tube is connected to one end of the first data line, and a first pole of the second switching tube is connected to the other end of the first data line.
Optionally, the first switch tubes correspond to the first data lines one to one, and the second switch tubes correspond to the first data lines one to one.
Optionally, the first switch sub-circuit is disposed on the substrate or in a driving circuit outside the substrate, and the second switch sub-circuit is disposed on the substrate or in a driving circuit outside the substrate.
Optionally, in a touch scanning stage, 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.
To achieve the above object, the present invention provides a touch screen, including: the array substrate and the color film substrate are oppositely arranged, and the array substrate adopts the array substrate.
In order to achieve the above object, the present invention provides a method for driving a touch screen, the method comprising:
in the touch scanning stage, the switching circuit is conducted, so that the first common electrode is connected with the data line in parallel, and a touch scanning signal is loaded on the first common electrode or the second common electrode;
in the display scanning stage, the switch circuit is switched off, so that the first common electrode and the data line are disconnected, the display scanning signal scans the grid line by line, and the display scanning signal is loaded in the corresponding data line.
In order to achieve the above object, the present invention provides a display including the above touch screen.
In the technical scheme of the array substrate, the touch screen, the driving method and the display device provided by the invention, the array substrate comprises: the substrate base plate, be formed with grid line, data line, first public electrode and second public electrode on the substrate base plate, first public electrode includes: lie in the horizontal electrode group on same row and connect the metal jumper wire of two adjacent horizontal electrode groups on the same row, second common electrode includes: and a switch circuit which is conducted in a touch scanning stage so as to enable the first common electrode and the data line to be connected in parallel is arranged between the first common electrode and the data line. In the touch scanning stage, the first common electrode is connected with the data line in parallel through the conduction of the switch circuit, so that the equivalent resistance of the first common electrode is reduced, the signal-to-noise ratio of the first common electrode is indirectly improved, the monitoring of a voltage signal coupled out by the touch sensing electrode is more accurate, and the accurate positioning of a touch point is realized.
Drawings
Fig. 1 is a schematic structural diagram of an array substrate provided in the prior art;
FIG. 2 is an enlarged view of a portion of the structure A shown in FIG. 1;
fig. 3 is a schematic structural diagram of an array substrate according to an embodiment of the invention;
FIG. 4 is a partial enlarged view of the structure B shown in FIG. 3;
fig. 5 is a schematic structural diagram of a first switch sub-circuit in the first embodiment of the present invention;
fig. 6 is a timing diagram illustrating an operation of the array substrate according to the present invention.
Description of the reference numerals
1-a substrate base plate; 2-a vertical common electrode;
201-longitudinal electrode wires; 3-a horizontal common electrode;
301-transverse electrode lines; 302-metal jumpers;
4-a common electrode substrate; 5-a first common electrode;
501-longitudinal electrode group; 6-a second common electrode;
601-set of transverse electrodes; 701-a first switch sub-circuit;
702-a second switch sub-circuit; 8-a data line;
801-a first data line; 802 — a second data line;
9-switching signal line.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the array substrate, the touch screen, the driving method and the display device provided by the present invention are described in detail below with reference to the accompanying drawings.
Example one
Fig. 3 is a schematic structural diagram of an array substrate according to an embodiment of the present invention, and fig. 4 is a partial enlarged view of a structure B shown in fig. 3, where as shown in fig. 3 and 4, the array substrate includes: the liquid crystal display panel comprises a substrate base plate 1, wherein a grid line, a data line 8, a first common electrode 5 and a second common electrode 6 are formed on the substrate base plate 1, the grid line and the data line 8 define pixel units, each pixel unit comprises a corresponding common electrode base body 4, all the common electrode base bodies 4 are divided into a plurality of transverse electrode groups 601 arranged in a row direction and a plurality of longitudinal electrode groups 501 arranged in a column direction, and the second common electrode 6 comprises: the transverse electrode groups 601 located on the same row and the metal jumper 302 connecting two adjacent transverse electrode groups 601 on the same row, the first common electrode 6 includes: in the vertical electrode group 501, a switch circuit which is turned on in the touch scanning stage to connect the first common electrode 5 and the data line 8 in parallel is provided between the first common electrode 5 and the data line 8.
The gate lines and the pixel units are not shown in the drawings. The first common electrode 5 comprises a longitudinal electrode group 501, the longitudinal electrode group 501 comprises a common electrode base 4 and a common electrode line connected with the common electrode base 4, the second common electrode 6 comprises a transverse electrode group 601 and a metal jumper wire 302, the transverse electrode group 601 comprises the common electrode base 4 and a common electrode line connected with the common electrode base 4, and the common electrode line comprises a longitudinal electrode line 201 and a transverse electrode line 301.
The pixel unit comprises a TFT and a pixel electrode, wherein the grid line is connected with the grid electrode of the TFT, the data line 8 is connected with the source electrode of the TFT, and the pixel electrode is connected with the drain electrode of the TFT. In the display scanning stage, the gate lines are scanned line by line, so that the TFTs in one line are in a conducting state, and the pixel electrodes in the line are displayed under the control of the corresponding data lines.
Optionally, the switching circuit comprises: the first switch subcircuit 701 and the second switch subcircuit 702, the first switch subcircuit 701 is respectively connected with one end of the first common electrode 5 and one end of the data line 8, and the second switch subcircuit 702 is respectively connected with the other end of the first common electrode 5 and the other end of the data line 8. The two ends of the first common electrode 5 are respectively provided with a switch sub-circuit, and the parallel connection 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.
Fig. 5 is a schematic structural diagram of a first switch sub-circuit according to a first embodiment of the present invention, and as shown in fig. 5, the first switch sub-circuit includes: the first pole of the first switch tube is connected with one end of the data line 8, the second pole of the first switch tube is connected with the first common electrode 5, and the grid electrode of the first switch tube is connected with a switch signal line 9 which provides a starting signal in a touch scanning stage; the second switch sub-circuit includes: and a first pole of the second switch tube is connected with one end of the data line 8, a second pole of the second switch tube is connected with the first common electrode 5, and a grid electrode of the second switch tube is connected with the switch signal line 9.
When the first switch sub-circuit only comprises one first switch tube, the data lines 8 corresponding to the first common electrode 5 are all connected with the first pole of the first switch tube, and the second pole of the first switch tube is connected with the first common electrode 5. The situation is not given a corresponding figure.
The first switch tube and the second switch tube can be TFTs, and then the gate of the TFT is connected to the switch signal line 9, the source is connected to the data line 8, and the drain is connected to the first common electrode 5, or the drain of the TFT is connected to the data line 8, and the source is connected to the first common electrode 5. Of course, other switch transistors, such as MOS transistor, etc., capable of implementing the present invention may be adopted
It should be noted that the second switch sub-circuit in the first embodiment of the present invention may also adopt the structure shown in fig. 5.
Alternatively, as shown in fig. 3 and 4, the data line 8 includes a first data line 801 disposed corresponding to the first common electrode 5 and a second data line 802 disposed corresponding to the second common electrode, a first pole of the first switching tube is connected to one end of the first data line 801, and a first pole of the second switching tube 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. The first data lines 801 arranged in the corresponding areas of the first common electrodes are provided with a plurality of first switch sub-circuits 701, the second switch sub-circuits 702 are provided with a plurality of second switch tubes, and two ends of each first data line 801 are respectively connected with one corresponding first switch tube and one corresponding second switch tube. When the first switch sub-circuit includes a plurality of first switch transistors, each of the first switch transistors may correspond to one of the first data lines 801.
Alternatively, the first switch sub-circuit 701 is disposed on the substrate base or in a driving circuit outside the substrate base, and the second switch sub-circuit 702 is disposed on the substrate base 1 or in a driving circuit outside the substrate base. Fig. 3 shows a case where both the first switch sub-circuit 701 and the second switch sub-circuit 702 are provided on the substrate base 1, and a case where the first switch sub-circuit 701 is provided in the driver circuit or the second switch sub-circuit 702 is provided in the driver circuit is not shown in the drawing.
Optionally, in the touch scanning stage, 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 scanning electrode. In the touch scanning stage, 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 the first common electrode 5 connected in parallel with the data line 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 forms an induced capacitance at the intersection with the common electrode base 4 in the first common electrode 5, or the metal jumper 302 in the second common electrode 6 forms an induced capacitance at the intersection with the longitudinal electrode line 201 in the first common electrode 5, or the metal jumper 302 in the second common electrode 6 forms an induced capacitance at the intersection with the data line 8 in the first common electrode 5. When a human body touches, the capacitance value of the induction capacitor changes, so that a voltage signal coupled out by the touch induction electrode is changed, and the position of the touch point can be determined according to the change of the voltage signal.
Fig. 6 is a timing diagram illustrating an operation of the array substrate of the present invention, and as shown in fig. 6, in a scanning process of one frame, a scanning signal can be divided into a reset phase (reset), a Touch Scan phase (Touch Scan) and a Display Scan phase (Display Scan). In the reset stage, the vertical synchronizing signal is converted from a high level to a low level, and the switching signal is converted from a low level to a high level, so that the switching circuit is turned on, the first common electrode and the Data line are connected in parallel, meanwhile, the first common electrode and the second common electrode are not loaded with a common voltage, and the Data line (Data line) is not loaded with a Data display signal. And after the scanning of the nth grid line is finished by the display scanning signal, resetting the voltage signal in the grid line in order to avoid the voltage in the grid line from influencing the voltage signal in the touch scanning stage. It should be noted that, during the reset phase, any dc voltage signal may be applied to the first data line, the second data line, the first common electrode and the second common electrode, or no signal may be applied thereto, and what is shown in fig. 6 only indicates that no signal is applied during the reset phase. In the touch scanning stage, the first common electrode and the data line are connected in parallel because the switch circuit is kept on, the first common electrode connected with the data line in parallel 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 or a touch scanning electrode. 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, the second common electrode couples a touch sensing signal having the same frequency as the touch scanning signal, when the display panel is touched, the touch sensing signal coupled by the second common electrode changes, and the touch point can be accurately located by detecting the changed touch sensing signal. In the display scanning stage, the vertical synchronizing signal is converted from a low level to a high level, the switching signal is converted from a high level to a low level, namely the switching circuit is broken, the display scanning signal scans the grid lines line by line from the first line of the grid lines, the first common electrode and the second common electrode are reloaded with common voltage, the first data line and the second data line are loaded with data display signals, and the data display signals control the pixel electrodes to display. In an actual process of driving the array substrate, a frequency of a data display signal loaded on the first data line or the second data line in a display scanning phase is generally less than a frequency of a touch scanning signal loaded on the touch scanning electrode in a touch scanning phase.
In the array substrate provided in the first embodiment of the present invention, a switch circuit that is turned on in a touch scanning stage to connect the first common electrode and the data line in parallel is disposed between the first common electrode and the data line. In the touch scanning stage, the first common electrode is connected with the data line in parallel through the conduction of the switch circuit, so that the equivalent resistance of the first common electrode is reduced, the signal-to-noise ratio of the first common electrode is indirectly improved, the monitoring of a voltage signal coupled out by the touch sensing electrode is more accurate, and the accurate positioning of a touch point is realized.
Example two
An embodiment of the present invention provides a touch panel, including: the array substrate and the color filter substrate are arranged oppositely, and the array substrate provided by the first embodiment is adopted as the array substrate, which can refer to the content described in the first embodiment and is not described herein again.
The touch screen provided by the second embodiment of the invention comprises an array substrate and a color film substrate, wherein the array substrate comprises a substrate, a grid line, a data line, a first common electrode and a second common electrode are formed on the substrate, a switch circuit which is conducted in a touch scanning stage to enable the first common electrode and the data line to be connected in parallel is arranged between the first common electrode and the data line, and the first common electrode and the data line are connected in parallel through the conduction of the switch circuit in the touch scanning stage, so that the equivalent resistance of the first common electrode is reduced, the signal-to-noise ratio of the first common electrode is indirectly improved, the monitoring of a voltage signal coupled by a touch sensing electrode is more accurate, and the accurate positioning of a touch point is realized.
EXAMPLE III
The third embodiment of the invention provides a driving method of a touch screen, which comprises the following steps: in the touch scanning stage, the switching circuit is conducted, so that the first common electrode is connected with the data line in parallel, and a touch scanning signal is loaded on the first common electrode or the second common electrode; in the display scanning stage, the switch circuit is switched off, so that the first common electrode and the data line are disconnected, the display scanning signal scans the grid line by line, and the display scanning signal is loaded in the corresponding data line.
In the driving method of the touch screen provided by the third embodiment of the present invention, the switch circuit which is turned on in the touch scanning stage to connect the first common electrode and the data line in parallel is disposed between the first common electrode and the data line, and in the touch scanning stage, the first common electrode and the data line are connected in parallel through the switch circuit, so that the equivalent resistance of the first common electrode is reduced, the signal-to-noise ratio of the first common electrode is indirectly improved, the monitoring of the voltage signal coupled by the touch sensing electrode is more accurate, and the accurate positioning of the touch point is realized.
Example four
An embodiment of the present invention provides a display device, which includes the touch screen provided in the third embodiment. For details, reference may be made to the second embodiment, which is not described herein again. The display device may be: the display device comprises any product or component with a display function, such as a liquid crystal panel, electronic paper, an OLED panel, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like.
The display provided by the fourth embodiment of the invention comprises a touch screen, wherein the touch screen comprises an array substrate and a color film substrate, the array substrate comprises a substrate, a grid line, a data line, a first common electrode and a second common electrode are formed on the substrate, a switch circuit which is conducted in a touch scanning stage to enable the first common electrode and the data line to be connected in parallel is arranged between the first common electrode and the data line, and the first common electrode and the data line are connected in parallel through the conduction of the switch circuit in the touch scanning stage, so that the equivalent resistance of the first common electrode is reduced, the signal-to-noise ratio of the first common electrode is indirectly improved, the monitoring of a voltage signal coupled by a touch sensing electrode is more accurate, and the accurate positioning of a touch point is realized.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. An array substrate, comprising: the liquid crystal display panel comprises a substrate base plate, wherein a grid line, a data line, a first public electrode and a second public electrode are formed on the substrate base plate, the grid line and the data line define pixel units, each pixel unit comprises a corresponding public electrode base body, all the public electrode base bodies are divided into a plurality of transverse electrode groups arranged in a row direction and a plurality of longitudinal electrode groups arranged in a column direction, and the second public electrode comprises: the horizontal electrode group that is located on same row and the metal jumper wire of two adjacent horizontal electrode groups on connecting same row, first public electrode includes: and a switch circuit which is conducted in a touch scanning stage to enable the first common electrode and the data line to be connected in parallel is arranged between the first common electrode and the data line.
2. The array substrate of claim 1, wherein the switching circuit comprises: a first switching sub-circuit and a second switching sub-circuit;
the first switch sub-circuit is connected with one end of the first public electrode and one end of the data line, and the second switch sub-circuit is connected with the other end of the first public electrode and the other end of the data line.
3. The array substrate of claim 2,
the first switch sub-circuit comprises: the first pole of the first switch tube is connected with one end of the data line, the second pole of the first switch tube is connected with the first common electrode, and the grid electrode of the first switch tube is connected with a switch signal line which provides a starting signal in a touch scanning stage;
the second switch sub-circuit comprises: and a first pole of the second switch tube is connected with one end of the data line, a second pole of the second switch tube is connected with the first common electrode, and a grid electrode of the second switch tube is connected with the switch signal line.
4. The array substrate of claim 3, wherein the data lines comprise a first data line disposed corresponding to the first common electrode and a second data line disposed corresponding to the second common electrode, the first pole of the first switch tube is connected to one end of the first data line, and the first pole of the second switch tube is connected to the other end of the first data line.
5. The array substrate of claim 4, wherein the first switch transistors correspond to the first data lines one to one, and the second switch transistors correspond to the first data lines one to one.
6. The array substrate of claim 3,
the first switch sub-circuit is arranged on the substrate or in a driving circuit outside the substrate;
the second switch sub-circuit is arranged on the substrate base plate or in a driving circuit outside the substrate base plate.
7. The array substrate of claim 3,
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: the color filter substrate comprises an array substrate and a color filter substrate, wherein the array substrate and the color filter substrate are arranged oppositely, and the array substrate is the array substrate of any one of claims 1 to 7.
9. A method for driving a touch panel is characterized in that,
the method comprises the following steps:
in the touch scanning stage, the switching circuit is conducted, so that the first common electrode is connected with the data line in parallel, and a touch scanning signal is loaded on the first common electrode or the second common electrode;
in the display scanning stage, the switch circuit is switched off, so that the first common electrode and the data line are disconnected, the display scanning signal scans the grid line by line, and the display scanning signal is loaded in the corresponding data line.
10. A display device, comprising: the touch screen of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053611.7A CN104598089B (en) | 2013-05-31 | 2013-05-31 | Array base palte, touch-screen and driving method and display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211448.3A CN103309534B (en) | 2013-05-31 | 2013-05-31 | Array substrate, touch screen, drive method and display device |
| CN201510053611.7A CN104598089B (en) | 2013-05-31 | 2013-05-31 | Array base palte, touch-screen and driving method and display device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310211448.3A Division CN103309534B (en) | 2013-05-31 | 2013-05-31 | Array substrate, touch screen, drive method and display device |
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