CN107193419B - Array substrate, application method thereof, display panel and display device - Google Patents
Array substrate, application method thereof, display panel and display device Download PDFInfo
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- CN107193419B CN107193419B CN201710377782.4A CN201710377782A CN107193419B CN 107193419 B CN107193419 B CN 107193419B CN 201710377782 A CN201710377782 A CN 201710377782A CN 107193419 B CN107193419 B CN 107193419B
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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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
The embodiment of the invention provides an array substrate, a using method thereof, a display panel and a display device. In one aspect, the array substrate includes: the display device comprises a substrate, a plurality of data lines, a plurality of scanning lines and a plurality of touch lines which are positioned on the substrate, and a virtual pixel unit positioned in a non-display area, wherein the virtual pixel unit comprises a switch, the switch comprises a control end, a first end and a second end, the control end is connected with one scanning line, and one end of the scanning line is connected with an alternating current signal source; the first end is connected with a data line, and the second end is connected with a touch line. In the embodiment of the invention, when the switch is in the conducting state, the first end and the second end are conducted, so that the touch signal on the touch line can be transmitted to the data line, and thus, no capacitance is formed between the data line and the touch line, and further, when the display panel is in a touch stage, the data line cannot interfere with the touch signal on the touch line, and further, the touch performance of the display panel is improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to an array substrate, a using method of the array substrate, a display panel and a display device.
[ background of the invention ]
In an In Cell Touch Panel (In Cell Touch Panel), a common electrode layer of a Liquid Crystal Display (LCD) Panel is generally divided into a plurality of common electrode blocks, and each common electrode block is electrically connected to a control IC (integrated circuit) through a trace (Touch line). And the common electrode block is reused as a touch electrode. In the display stage, the common electrode block is used for receiving a common voltage signal, and in the touch stage, the common electrode block is used as a touch drive electrode and is used for receiving a touch drive signal.
In the prior art, the orthographic projections of touch lines and data lines in an embedded touch screen on a substrate are overlapped, and when a display panel is in a touch stage, a touch signal exists on the touch lines, but no signal exists on the data lines, so that a capacitor is formed between the touch lines and the data lines, and then the touch signal is interfered, and the touch performance of the display panel is influenced.
[ summary of the invention ]
In view of this, embodiments of the present invention provide an array substrate, a method for using the same, a display panel, and a display device, so as to solve the problem in the prior art that a capacitance is formed between a touch line and a data line, and further interference is generated on a touch signal, thereby affecting the touch performance of the display panel.
In a first aspect, an embodiment of the present invention provides an array substrate having a display area and a non-display area surrounding the display area, including:
a substrate base plate;
the display panel comprises a substrate base plate, a plurality of data lines and a plurality of scanning lines, wherein the plurality of data lines and the plurality of scanning lines are positioned on the substrate base plate, and are insulated and crossed to limit a plurality of first pixel regions and a plurality of second pixel regions;
the non-display area comprises a first non-display area and a second non-display area, and the first non-display area, the display area and the second non-display area are sequentially arranged along the extending direction of the data line;
the virtual pixel unit is positioned in the first non-display area and/or the second non-display area;
the touch lines are positioned on one side of the data line far away from the substrate base plate; the orthographic projection of the touch line on the substrate base plate at least partially overlaps with the orthographic projection of the data line on the substrate base plate;
the virtual pixel unit comprises a switch, the switch comprises a control end, a first end and a second end, the control end is connected with one scanning line, and one end of the scanning line is connected with an alternating current signal source; the first end is connected with a data line, and the second end is connected with a touch line.
Optionally, an orthographic projection of the touch line on the substrate base plate at least partially overlaps with an orthographic projection of the data line on the substrate base plate.
Optionally, the dummy pixel unit includes a first dummy pixel unit and a second dummy pixel unit, the first dummy pixel unit is located in the first non-display area, and the second dummy pixel unit is located in the second non-display area.
Optionally, the switch is a thin film transistor.
Optionally, the control terminal is a gate, the first terminal of the switch is a source, and the second terminal of the switch is a drain; or, the control end is a gate, the first end of the switch is a drain, and the second end of the switch is a source.
Optionally, in the touch stage, the ac signal source provides a high level signal, and in the display stage, the ac signal source provides a low level signal.
Optionally, the method further comprises:
a plurality of touch electrodes independent of each other; one touch electrode is connected with at least one touch line.
Optionally, the plurality of touch electrodes are a plurality of block-shaped self-capacitance electrodes arranged in an array, and the touch electrodes are reused as a common electrode in the display stage.
Optionally, the plurality of touch electrodes are strip-shaped touch electrodes, and the touch electrodes extend along the extending direction of the data lines and are arranged along the arrangement direction of the scanning lines.
Optionally, the virtual pixel unit includes a first partial virtual pixel unit, an orthogonal projection of the first partial virtual pixel unit on the substrate is located in an orthogonal projection of the touch electrode on the substrate, the first partial virtual pixel unit includes at least one virtual pixel unit, and second ends of switches in the first partial virtual pixel unit are respectively connected to a touch line connected to the touch electrode.
In a second aspect, an embodiment of the invention provides a touch display panel, including the array substrate described in any of the above.
Optionally, the method further comprises:
a color film substrate;
a liquid crystal layer;
the color film substrate and the array substrate are arranged oppositely, and the liquid crystal layer is arranged between the color film substrate and the array substrate.
In a third aspect, an embodiment of the present invention provides a touch display device, including the touch display panel as described above.
In a fourth aspect, an embodiment of the present invention provides a method for using an array substrate, where the array substrate described in any of the above includes:
when the touch control stage is in, the alternating current signal source provides a high level signal;
and when the display stage is in, the alternating current signal source provides a low level signal.
One of the above technical solutions has the following beneficial effects:
in the embodiment of the invention, the virtual pixel unit comprises a switch, the switch comprises a control end, a first end and a second end, the control end is connected with one scanning line, and one end of the scanning line is connected with an alternating current signal source; the first end is connected with a data line, the second end is connected with a touch control line, the alternating current signal source provides a high level signal in the touch control stage, therefore, when the display panel is in the touch control stage, the AC signal source can provide a high-level signal to the switch through the scan line, so that the switch is in a conducting state, and the first end and the second end are in a conducting state, therefore, when a touch signal is transmitted on the touch line, the switch can transmit the touch signal to the data line through the first end and the second end, and at the moment, because the touch signal and the data line transmit the same signal, no potential difference is formed between the touch signal and the data line, thereby, no capacitance is formed between the data line and the touch line, and when the display panel is in the touch stage, the data lines cannot interfere with touch signals on the touch lines, and therefore touch performance of the display panel is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic top view of an array substrate according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view along AA' of FIG. 1;
FIG. 3 is a schematic diagram of a switch connected to a scan line, a data line and a touch line according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a positional relationship between a touch line and a plurality of data lines according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a positional relationship between a touch electrode and a plurality of data lines according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating connection between another switch and a data line, a scan line and a touch line according to an embodiment of the present invention;
FIG. 7 is a schematic top view of another array substrate according to an embodiment of the present invention;
FIG. 8 is a schematic top view of another array substrate according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another switch according to an embodiment of the present invention connected to a data line, a scan line and a data line;
fig. 10 is a schematic cross-sectional view of a touch display panel according to an embodiment of the invention;
fig. 11 is a schematic view of a touch display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element.
Possible implementations are explained in detail below.
As shown in fig. 1, fig. 1 is a top view of an array substrate according to an embodiment of the present invention, and as shown in fig. 2, fig. 2 is a schematic cross-sectional view along an AA' direction in fig. 1, the array substrate has a display area 11 and a non-display area 12 surrounding the display area 11, and the array substrate includes:
a base substrate 13;
a plurality of data lines 14 and a plurality of scanning lines 15 on the substrate 13, the plurality of data lines 14 and the plurality of scanning lines 15 are insulated and crossed to define a plurality of first pixel regions 16 and a plurality of second pixel regions 17, a first pixel unit 18 is arranged in each first pixel region 16, a virtual pixel unit 19 is arranged in each second pixel region 17, and the virtual pixel unit 19 is located in the non-display region 12;
the non-display area 12 includes a first non-display area 121 and a second non-display area 122, and the first non-display area 121, the display area 11, and the second non-display area 122 are sequentially arranged along the extending direction of the data line 14;
the dummy pixel unit 19 is located in the first non-display area 121 and/or the second non-display area 122 (only the structure that the dummy pixel unit 19 is located in the second non-display area 122 is illustrated in fig. 1);
as shown in fig. 2, the array substrate further includes a plurality of touch lines 20, where the plurality of touch lines 20 are located on a side of the data lines 14 away from the substrate base plate 13; the orthographic projection of the touch control line 20 on the substrate base 13 at least partially overlaps with the orthographic projection of the data line 14 on the substrate base 13;
as shown in fig. 3, fig. 3 is a schematic diagram of connection between a switch and a scan line, a data line and a touch line according to an embodiment of the present invention, where the virtual pixel unit 19 includes the switch 191, the switch 191 includes a control end 1911, a first end 1912 and a second end 1913, the control end 1911 is connected to one scan line 15, and one end of the scan line 15 is connected to an ac signal source 21; the first end 1912 is connected to one data line 14, and the second end 1913 is connected to one trigger line 20.
Specifically, as shown in fig. 1, the substrate 13 includes a display region 11 and a non-display region 12, the non-display region includes a first non-display region 121 and a second non-display region 122, the display region 11 is located between the first non-display region 121 and the second non-display region 122, the first pixel region 16 located in the display region 11 includes a first pixel unit 18, and a virtual pixel unit 19 located in the second pixel region 17 of the non-display region 12, the virtual pixel unit 19 is located in the second non-display region 122, since the display region 11 has a display function and the non-display region 12 does not have the display function, in order to reduce the process difficulty and compensate the process difference between the display region 11 and the non-display region 12, it is necessary to provide a virtual pixel unit 19 in the second pixel region 17, wherein the virtual pixel unit 19 may be provided in the first non-display region 121, or may be provided in the second non-display region 122, still alternatively, the display panel may be disposed in the first non-display area 121 and the second non-display area 122, as shown in fig. 3, the dummy pixel unit 19 includes a switch 191, and the switch 191 includes a control end 1911, a first end 1912 and a second end 1913, where the control end 1911 is connected to the scan line 15 corresponding to the dummy pixel unit 19 where the switch 191 is located, the scan line 15 is connected to the ac signal source 21, the first end 1912 is connected to the data line 14 corresponding to the dummy pixel unit 19 where the switch 191 is located, the second end 1913 is connected to the touch line 20 corresponding to the dummy pixel unit 19 where the switch 191 is located, the ac signal source 21 is capable of providing a high-level signal during a touch stage of the display panel, providing a low-level signal during the display stage of the display panel, the first end 1912 and the second end 1913 may be turned on after the switch 191 is turned on, and when there is a touch signal on the touch line 20 after the first end 1912 and the second end 1913 are turned on, the touch signal can be transmitted to the data line 14 connected to the first end 1912 through the second end 1913, as shown in fig. 2, an orthogonal projection of one touch line 20 and one data line 14 on the substrate 13 overlaps, the one touch line 20 and the one data line 14 can be respectively connected to the second end 1913 and the first end 1912 of the corresponding switch 191, when there is a touch signal on the one touch line 20, the touch signal can be transmitted to the data line 14 through the first end 1912 and the second end 1913, at this time, the data line 14 and the touch line 20 have the same touch signal, so the potentials of the data line 14 and the touch line 20 are equal, no potential difference is formed between the data line 14 and the touch line 20, no capacitance is formed between the data line 14 and the touch line 20, and further, during a touch phase, the data line 14 does not interfere with the touch signal on the touch line 20, further, the touch performance of the display panel is improved, and in the display stage, since the switch 191 is in the off state when the low-level signal is provided by the ac signal source 21, the first end 1912 and the second end 1913 cannot be turned on, the touch signal in the touch line 20 is not transmitted to the data line 14, thereby ensuring the normal display of the display panel in the display stage. In the prior art, the control end of the switch in the virtual pixel unit is connected with the scanning line, the first end is connected with the data line, the second end is connected with the pixel electrode, and the virtual pixel unit does not have a display function, so that the normal display of the display panel cannot be influenced after the switch in the virtual pixel unit in the prior art is improved. The capacitance corresponding to the touch control line comprises a capacitance formed between the touch control line and the data line and a capacitance formed between the touch control line and other structures in the display panel, and the smaller the load on the touch control line is, the better the touch control performance of the display panel is, and the load on the touch control line is equal to the product of the capacitance corresponding to the touch control line and the resistance on the touch control line.
Optionally, an orthogonal projection of the data line 14 connected to the first end 1912 on the substrate base 13 at least partially overlaps an orthogonal projection of the touch line 20 connected to the second end 1913 on the substrate base 13.
Specifically, as shown in fig. 4, fig. 4 is a schematic diagram of a position relationship between a touch control line and a plurality of data lines, an orthographic projection of a touch control line 20 on a substrate 13 may overlap an orthographic projection of a data line 14 of a plurality of data lines 14 on the substrate 13, when a touch signal is present on the touch control line 20, a capacitance formed by the data line 14 and the touch control line 20 is large, the data line 14 may generate strong interference to the touch control signal on the touch control line 20, since the data line 14 corresponds to a virtual pixel unit 19, the virtual pixel unit 19 includes a switch 191, the touch control line 20 may be connected to a second end 1913 of the switch 191, the data line 14 is connected to a first end 1912 of the switch 191, and when the switch 191 is in an on state, the first end 1912 is connected to the second end 1913, therefore, the touch signal on the touch line 20 can be transmitted to the data line 14, so that no capacitance is formed between the data line 14 and the touch line 20, and the data line 14 does not interfere with the touch signal in the touch line 20, thereby improving the touch performance of the display panel. Meanwhile, after the design is adopted, as the capacitor cannot be formed between the data line and the touch line, the capacitor corresponding to the touch line can be reduced, so that the load on the touch line is reduced, and the touch performance of the display panel is further improved.
Meanwhile, as shown in fig. 4, the data lines 14 further include data lines 14 that do not overlap with the orthographic projection of the touch lines 20 on the substrate 13, but are adjacent to each other, so as to avoid forming capacitance between the touch lines 20 and the adjacent data lines 14 when there is a touch signal on the touch lines 20, so that the adjacent data lines 14 generate interference on the touch signal, after the touch lines 20 and the data lines 14 that are orthographic projected on the substrate at least partially overlap are connected through one switch, the touch lines 20 may also be connected to the second ends 1913 of the switches 191 corresponding to the adjacent data lines 14, so that when the display panel is in a touch stage, the touch lines 20 and the adjacent data lines 14 have the same touch signal, so that no capacitance is formed between the touch lines 20 and the adjacent data lines 14, and therefore the adjacent data lines 14 do not generate interference on the touch signals on the touch lines 20, and the capacitance corresponding to the touch line 20 is reduced, the load corresponding to the touch line 20 is reduced, and further the touch performance of the display panel is improved. Further, as a touch line 20 is connected to a touch electrode 22, as shown in fig. 5, fig. 5 is a schematic diagram of a position relationship between a touch electrode and a plurality of data lines provided in the embodiment of the present invention, an orthogonal projection of a touch electrode 22 on a substrate 13 may overlap an orthogonal projection of a plurality of data lines 14 on the substrate 13, and all the data lines 14 may interfere with a touch signal on the touch line 20, so that the touch line 20 may be connected to the second end 1913 of the switch 191 in the plurality of virtual pixel units 19 corresponding to the plurality of data lines 14, so as to avoid forming a capacitance between the data line 14 and the plurality of data lines 14, so that the plurality of data lines 14 may not interfere with the touch signal on the touch line 20, thereby improving the touch performance of the display panel. Meanwhile, the capacitance formed between the touch control line and the data lines can be eliminated, and the capacitance corresponding to the touch control line can be effectively reduced, so that the load on the touch control line is reduced, and the touch control performance of the display panel is further improved.
Optionally, as shown in fig. 6, fig. 6 is a schematic diagram illustrating connection between another switch and a data line, a scan line and a touch line according to an embodiment of the present invention, where the virtual pixel unit 19 includes a first virtual pixel unit 19A and a second virtual pixel unit 19B, the first virtual pixel unit 19A is located in the first non-display area 121, and the second virtual pixel unit 19B is located in the second non-display area 122.
Specifically, as shown in fig. 6, after the touch line and the data line are connected by the switch in the first virtual pixel unit 19A and the switch in the second virtual pixel unit 19B, in the touch phase, when the switch in the first dummy pixel unit 19A and the switch in the second dummy pixel unit 19B are both turned on, the touch line and the data line are connected in parallel, after the data line and the touch line are connected in parallel, the equivalent resistance on the touch line can be reduced, and the load on the touch line is further reduced, so that the touch performance of the display panel is improved, and meanwhile, after the design is adopted, in the touch control stage, the touch control signal on the touch control line is transmitted to the data line, so that no capacitance is formed between the data line and the touch control line, thereby reducing the capacitance corresponding to the touch control line, and further, the load on the touch line is further reduced, and the touch performance of the display panel is further improved.
Alternatively, the switch 191 is a thin film transistor.
Optionally, the control end 1911 is a gate, the first end 1912 of the switch 191 is a source, and the second end 1913 of the switch 191 is a drain; alternatively, control end 1911 is a gate, first end 1912 of switch 191 is a drain, and second end 1913 of switch 191 is a source.
Specifically, the gate of the thin film transistor may receive a control signal, and the thin film transistor may be in a conducting state after receiving the control signal, because the source and the drain of the thin film transistor are in the conducting state, the source of the thin film transistor may be connected to the data line 14, or may be connected to the control line 20, and after the source is connected to the data line 14, the drain is connected to the control line 20, or after the source is connected to the control line 20, the drain is connected to the data line 14, and when the thin film transistor is in the conducting state, and after a touch signal is present on the touch line 20, the touch signal may be transmitted to the data line 14 through the thin film transistor, so that the touch line 20 and the data line 14 do not form a capacitor any more, and it is ensured that the data line 14 does not interfere with the touch signal in the touch line 20 any more. Meanwhile, after the design is adopted, the capacitance formed between the touch control line and the data line can be eliminated, and further the capacitance corresponding to the touch control line can be effectively reduced, so that the load on the touch control line is reduced, and the touch control performance of the display panel is improved.
Optionally, in the touch stage, the ac signal source 21 provides a high level signal, and in the display stage, the ac signal source 21 provides a low level signal.
Specifically, the display panel can be divided into a touch stage and a display stage in the working period, the display panel can perform touch control in the touch stage, and the display panel can perform display control in the display stage, wherein the touch stage and the display stage can be alternated. In the touch stage, the touch line 20 has a touch signal, and in the prior art, because there is no touch signal on the touch line in the display stage, there is only a touch signal on the touch line in the touch stage, and therefore, only in the touch stage, a capacitance is formed between the data line and the touch line, which interferes with the touch signal in the touch line, in the embodiment of the present invention, when in the touch stage, the ac signal source 21 provides a high level signal to the scan line 15, so that the corresponding tft is in the on state, and the source and the drain are turned on, so that the touch signal on the touch line 20 can be transmitted to the data line 14, so that the data line 14 and the touch line 20 do not form a capacitance any more, thereby preventing the data line 14 from interfering with the touch signal in the touch line 20, and at the same time, when the ac signal source 21 provides a low level signal to the scan line 15 in the display stage, the tft is in the off state, the data lines 14 are ensured to normally transmit data signals, and the data signals are not transmitted to the touch lines 20, so that normal display of the display panel is ensured.
Optionally, the array substrate further includes a plurality of touch electrodes 22 independent of each other; one touch electrode 22 is connected to at least one touch line 20.
Alternatively, as shown in fig. 7, fig. 7 is a schematic top view of another array substrate according to an embodiment of the present invention, the touch electrodes 22 are a plurality of block-shaped self-capacitance electrodes arranged in an array, and the touch electrodes 22 are reused as a common electrode in a display stage.
Specifically, a plurality of block-shaped self-capacitance electrodes are arranged in a display manner, each self-capacitance electrode forms a self-capacitance channel, each self-capacitance electrode realizes the input of a touch driving signal and the output of a touch detection signal through a touch line 20 electrically connected with the self-capacitance electrode, and the display panel determines a touch position by using the touch driving signal and the touch detection signal. The display panel can be divided into a touch control stage and a display stage in the working period, the display panel can perform touch control in the touch control stage, and the display panel can perform display control in the display stage, wherein the touch control stage and the display stage can be alternated.
Alternatively, as shown in fig. 8, fig. 8 is a schematic top view of another array substrate according to an embodiment of the present invention, including a plurality of touch electrodes 22 being stripe-shaped touch electrodes 22, where the touch electrodes 22 extend along the extending direction of the data lines 14 and are arranged along the arrangement direction of the scan lines 15.
Specifically, the mutual capacitance touch electrode includes a touch driving electrode and a touch sensing electrode, the touch electrode 22 is a strip-shaped touch electrode 22, the touch electrode 22 extends along the extending direction of the data line 14, and when the touch electrode 22 is arranged along the arrangement direction of the scan line 15, that is, the touch electrode 22 extends along the Y direction and is arranged along the X direction as shown in fig. 8, the touch electrode 22 is a touch driving electrode, for the mutual capacitance touch electrode, in the touch stage, the touch electrode 22 receives a touch driving signal, the touch driving signal is usually a pulse signal, the touch sensing electrode (not shown) generates a touch sensing signal, and then the touch sensing electrode outputs the touch sensing signal, and the display panel determines the occurrence position of the touch operation by using the touch sensing signal and the touch driving signal.
Alternatively, as shown in fig. 9, fig. 9 is another schematic diagram of connecting switches with data lines, scan lines, and data lines according to an embodiment of the present invention, where a virtual pixel unit 19 includes a first portion of virtual pixel units 19, an orthogonal projection of the first portion of virtual pixel units 19 on a substrate 13 is located in an orthogonal projection of a touch electrode 22 on the substrate 13, the first portion of virtual pixel units 19 includes at least one virtual pixel unit 19, and second ends 1913 of switches 191 in the first portion of virtual pixel units 19 are respectively connected to touch lines 20 connected to the touch electrode 22.
Specifically, as shown in fig. 9, when the orthographic projections of two virtual pixel units 19 on the substrate 13 are both located in the orthographic projection of one touch electrode 22 on the substrate 13, the data lines 14 connected to the switches 191 in the two virtual pixel units 19 interfere with the touch signals in the touch lines 20 connected to the touch electrode 22, so that the second ends 1913 of the switches 191 in the two virtual pixel units 19 need to be connected to the touch lines 20, the data lines 14 corresponding to the two virtual pixel units 19 and the touch lines 20 do not form capacitance, and the data lines 14 corresponding to the two virtual pixel units 19 do not interfere with the touch lines 20. Meanwhile, after the design is adopted, the capacitance formed between the data line 14 connected with the switch 191 in the two virtual pixel units 19 and the touch line 20 connected with the touch electrode 22 can be eliminated, and further, the capacitance corresponding to the touch line can be effectively reduced, so that the load on the touch line is reduced, and the touch performance of the display panel is improved.
Optionally, an embodiment of the present invention further provides a touch display panel, including the array substrate 1 described above, where a specific structure and a principle of the array substrate 1 are the same as those of the embodiment described above, and are not described herein again.
Optionally, as shown in fig. 10, fig. 10 is a schematic cross-sectional view of a touch display panel provided in an embodiment of the present invention, and the touch display panel includes a color film substrate 2 and a liquid crystal layer 3, where the color film substrate 2 and the array substrate 1 are disposed opposite to each other, and the liquid crystal layer 3 is disposed between the color film substrate 2 and the array substrate.
Alternatively, as shown in fig. 11, fig. 11 is a schematic view of a touch display device according to an embodiment of the present invention, including the touch display panel 4.
Optionally, an embodiment of the present invention further provides a method for using an array substrate, where the method is applied to the array substrate, and includes: when the touch control stage is in, the alternating current signal source 21 provides a high level signal; in the display phase, the ac signal source 21 provides a low level signal.
Specifically, the display panel can be divided into a touch stage and a display stage in the working period, the display panel can perform touch control in the touch stage, and the display panel can perform display control in the display stage, wherein the touch stage and the display stage can be alternated. In the touch stage, there is a touch signal on the touch line 20, and in the display stage, there is no touch signal on the touch line 20, so that only in the touch stage, the data line 14 and the touch line 20 form a capacitor, the interference is generated to the touch signal in the touch line 20, when in the touch stage, the ac signal source 21 provides a high level signal to the scan line 15 to make the corresponding thin film transistor in a conducting state, and the source and the drain are conducting, so that the touch signal on the touch line 20 can be transmitted to the data line 14, and the data line 14 and the touch line 20 no longer form a capacitor, thereby preventing the data line 14 from interfering with the touch signal in the touch line 20, and, because the capacitance formed between the touch control line and the data line is eliminated, the capacitance corresponding to the touch control line can be effectively reduced, thereby reducing the load on the touch control line and improving the touch control performance of the display panel. Meanwhile, in the display stage, the ac signal source 21 provides a low-level signal for the scan line 15, and the thin film transistor is in a cut-off state, so as to ensure that the data line 14 normally transmits a data signal, and the data signal is not transmitted to the touch line 20, thereby ensuring normal display of the display panel.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (13)
1. An array substrate having a display area and a non-display area surrounding the display area, comprising:
a substrate base plate;
the display panel comprises a substrate base plate, a plurality of data lines and a plurality of scanning lines, wherein the plurality of data lines and the plurality of scanning lines are positioned on the substrate base plate, and are insulated and crossed to limit a plurality of first pixel regions and a plurality of second pixel regions;
the non-display area comprises a first non-display area and a second non-display area, and the first non-display area, the display area and the second non-display area are sequentially arranged along the extending direction of the data line;
the virtual pixel unit is positioned in the first non-display area and/or the second non-display area;
the touch lines are positioned on one side of the data line far away from the substrate base plate; the orthographic projection of the touch line on the substrate base plate at least partially overlaps with the orthographic projection of the data line on the substrate base plate;
the virtual pixel unit comprises a switch, the switch comprises a control end, a first end and a second end, the control end is connected with one scanning line, and one end of the scanning line is connected with an alternating current signal source; the first end is connected with a data line, and the second end is connected with a touch line.
2. The array substrate of claim 1, wherein the dummy pixel units comprise a first dummy pixel unit and a second dummy pixel unit, the first dummy pixel unit is located in the first non-display region, and the second dummy pixel unit is located in the second non-display region.
3. The array substrate of claim 1, wherein the switch is a thin film transistor.
4. The array substrate of claim 3, wherein the control terminal is a gate, the first terminal of the switch is a source, and the second terminal of the switch is a drain; or, the control end is a gate, the first end of the switch is a drain, and the second end of the switch is a source.
5. The array substrate of claim 1, wherein the AC signal source provides a high level signal during a touch phase and provides a low level signal during a display phase.
6. The array substrate of claim 1, further comprising:
a plurality of touch electrodes independent of each other; one touch electrode is connected with at least one touch line.
7. The array substrate of claim 6, wherein the touch electrodes are a plurality of block-shaped self-capacitance electrodes arranged in an array, and the touch electrodes are reused as a common electrode in a display stage.
8. The array substrate of claim 6, wherein the touch electrodes are stripe-shaped touch electrodes, and the touch electrodes extend along the extending direction of the data lines and are arranged along the arrangement direction of the scan lines.
9. The array substrate according to claim 6, wherein the dummy pixel units comprise a first portion of dummy pixel units, an orthogonal projection of the first portion of dummy pixel units on the substrate is located in an orthogonal projection of a touch electrode on the substrate, the first portion of dummy pixel units comprises at least one dummy pixel unit, and second ends of switches in the first portion of dummy pixel units are respectively connected to a touch line connected to the touch electrode.
10. A touch display panel comprising the array substrate according to any one of claims 1 to 9.
11. The touch display panel of claim 10, further comprising:
a color film substrate;
a liquid crystal layer;
the color film substrate and the array substrate are arranged oppositely, and the liquid crystal layer is arranged between the color film substrate and the array substrate.
12. A touch display device comprising the touch display panel according to claim 10 or 11.
13. A method for using an array substrate, the method comprising the steps of:
when the touch control stage is in, the alternating current signal source provides a high level signal;
and when the display stage is in, the alternating current signal source provides a low level signal.
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| KR102476468B1 (en) * | 2017-12-13 | 2022-12-12 | 엘지디스플레이 주식회사 | Display Device having Touch Screen |
| CN109828697B (en) * | 2019-01-31 | 2021-09-03 | 合肥鑫晟光电科技有限公司 | Array substrate and manufacturing method thereof, touch display device and driving method thereof |
| EP4047589A4 (en) * | 2019-10-14 | 2022-11-16 | BOE Technology Group Co., Ltd. | Array substrate and display panel |
| CN112363636B (en) * | 2020-10-27 | 2024-03-19 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN115542619A (en) * | 2021-06-29 | 2022-12-30 | 北京京东方显示技术有限公司 | Array substrate and display device |
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