CN212569366U - Array substrate and touch display device - Google Patents
Array substrate and touch display device Download PDFInfo
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- CN212569366U CN212569366U CN202021480003.7U CN202021480003U CN212569366U CN 212569366 U CN212569366 U CN 212569366U CN 202021480003 U CN202021480003 U CN 202021480003U CN 212569366 U CN212569366 U CN 212569366U
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- 239000000758 substrate Substances 0.000 title claims abstract description 63
- 239000010409 thin film Substances 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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Abstract
The utility model discloses an array substrate and touch-control display device, be equipped with the scanning line on the array substrate, the data line, thin film transistor, common electrode and pixel electrode, still be equipped with the touch-control and walk line and switch element, data line and touch-control are walked the line and are located the same layer and extend along the equidirectional, the scanning line respectively with the data line, the touch-control is walked line insulation and is alternately injectd and form a plurality of sub-pixels, data line and touch-control are walked and are separated apart through the sub-pixel between the line, every pixel electrode corresponds a sub-pixel and passes through thin film transistor and neighbouring thin film transistor's scanning line and data line electric connection, common electrode is cut apart into a plurality of mutually independent touch-control electrodes, every touch-control is walked line and a touch-control electrode electric connection, the touch-control is walk. The touch-control routing and the data line are selectively and short-circuited through the switch element, so that electric charges on the pixel electrode can be quickly released, and power consumption is reduced.
Description
Technical Field
The utility model relates to a touch-control display technology field especially relates to an array substrate and touch-control display device.
Background
Currently, the existing embedded (Incell) touch screen uses the principle of mutual capacitance or self-capacitance to detect the touch position of a finger. The touch control position can be judged by detecting the capacitance value change of each capacitance electrode in the touch control time period by the touch control detection chip. Because the human body capacitance can act on all self-capacitances, and only act on the projection capacitance in the mutual capacitance compared with the human body capacitance, the touch variation caused by the touch of the human body on the screen can be larger than that of the touch screen manufactured by using the mutual capacitance principle, so that the signal-to-noise ratio of touch can be effectively improved compared with the touch screen of the mutual capacitance, and the accuracy of touch sensing is improved.
However, in the structural design of the self-capacitive embedded touch screen, a new film layer needs to be added inside the existing display substrate, so that a new process needs to be added when the display substrate is manufactured, the production cost is increased, and the improvement of the production efficiency is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide an array substrate and touch-control display device to solve among the prior art thicker and the higher problem of cost of embedded touch-sensitive screen.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides an array substrate, be equipped with the scanning line on this array substrate, the data line, thin film transistor, the line is walked in the touch-control, switch element, common electrode and pixel electrode, this data line and this touch-control are walked the line and are located the same layer and extend along the equidirectional, this scanning line respectively with this data line, this touch-control is walked line insulation and is alternately injectd and form a plurality of sub-pixels, this data line and this touch-control are walked between spaced apart through this sub-pixel, every this pixel electrode corresponds a sub-pixel and passes through this thin film transistor and the scanning line and the data line electric connection of neighbouring this thin film transistor, this common electrode is cut apart into a plurality of mutually independent touch-control electrodes, every touch-control is walked line and a touch-control electrode electric connection, this touch-control is walked one of them data line electric connection of line through this.
Furthermore, the control end of the switch element is electrically connected with a time sequence control chip, and the time sequence control chip controls the connection or disconnection of the touch control routing and the data line through the switch element;
the touch control method comprises the steps that the touch control wiring and the data line are controlled to be disconnected in a display time period and a touch control time period, each touch control electrode is used for applying a common signal in the display time period, and each touch control electrode is used for applying a touch control signal in the touch control time period; and controlling the conduction of the touch wire and the data wire in the interval time period between the display time period and the touch time period.
Furthermore, in the same row of the sub-pixels, the two pixel electrodes at two sides of the data line are both connected to the same data line and are respectively connected to two different scan lines.
Furthermore, in the same column of the sub-pixels, two adjacent pixel electrodes are respectively connected to two different scan lines.
Furthermore, each touch electrode corresponds to a plurality of the sub-pixels.
Furthermore, each touch electrode is electrically connected with a plurality of touch wires.
Furthermore, a connecting wire is arranged on the array substrate, and a plurality of touch wires connected with the same touch electrode are electrically connected through the connecting wire.
Furthermore, the pixel electrode and the touch electrode are positioned on different layers and isolated in an insulating way, the pixel electrode is a comb-shaped electrode with a slit, and the touch electrode is a planar electrode.
The utility model also provides a touch-control display device, include as above array substrate.
Furthermore, the touch display device also comprises a color film substrate arranged opposite to the array substrate and a liquid crystal layer positioned between the array substrate and the color film substrate.
The utility model has the advantages that: the touch control device has the advantages that the spare wires on the array substrate are used as touch control wires, the pixel aperture ratio is not affected, the manufacture procedure is not required to be increased, the common electrode is divided into a plurality of blocks and used as the touch control electrode, the manufacture process of a touch control layer can be saved, the box thickness is reduced, meanwhile, the touch control wires and the data lines are selectively short-circuited through the switch element, accordingly, charges on the pixel electrode can be quickly released, the effect of eliminating shutdown ghost shadows can be achieved, and the output power consumption of the display driving chip is reduced.
Drawings
Fig. 1 is a schematic plan view illustrating an array substrate according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of an array substrate according to a first embodiment of the present invention;
fig. 3 is a second schematic plan view illustrating an array substrate according to a first embodiment of the present invention;
fig. 4 is a waveform diagram of driving signals of an array substrate according to a first embodiment of the present invention;
fig. 5 is a schematic plan view of an array substrate according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a touch display device in an initial state according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a touch display device in a bright state according to a third embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments for the specific embodiments, structures, features and effects of the array substrate and the touch display device according to the present invention as follows:
[ example one ]
Fig. 1 is one of the schematic plane structures of the array substrate in the first embodiment of the present invention, fig. 2 is a schematic cross-sectional structure of the array substrate in the first embodiment of the present invention, fig. 3 is a schematic plane structure of the array substrate in the first embodiment of the present invention, and fig. 4 is a waveform diagram of a driving signal of the array substrate in the first embodiment of the present invention.
As shown in fig. 1 to 4, in an array substrate according to an embodiment of the present invention, a scan line 1, a data line 2, a thin film transistor 3, a touch trace 4, a switch element 5, a common electrode and a pixel electrode 12 are disposed on an array substrate 10, the data line 2 and the touch trace 4 are disposed on the same layer and extend along the same direction, the scan line 1 is respectively crossed with the data line 2 and the touch trace 4 in an insulating manner and defines a plurality of sub-pixels SP, the data line 2 and the touch trace 4 are spaced apart from each other by the sub-pixels SP, each pixel electrode 12 corresponds to one sub-pixel SP and is electrically connected to the scan line 1 and the data line 2 of an adjacent thin film transistor 3 through the thin film transistor 3, the common electrode is divided into a plurality of mutually independent touch electrodes 11, each touch trace 4 is electrically connected to one touch electrode 11, the touch line 4 is electrically connected to one of the data lines 2 of the adjacent touch lines 4 through the switch element 5, in the display period t1 (fig. 4), each touch electrode 11 is used to apply a common signal, and in the touch period t2, each touch electrode 11 is used to apply a touch signal. Namely, the touch electrode 11 has a touch function and serves as a common electrode. The thin film transistor 3 includes a gate electrode 31, an active layer 32, a drain electrode 33, and a source electrode 34, wherein the gate electrode 31 and the scan line 1 are located in the same layer and electrically connected, the gate electrode 31 and the active layer 32 are separated by an insulating layer, the source electrode 34 is electrically connected to the data line 2, and the drain electrode 33 is electrically connected to the pixel electrode 12 through a contact hole.
Further, the control terminal of the switch element 5 is electrically connected to the timing control chip 40, the timing control chip 40 controls the touch trace 4 and the data line 2 to be connected or disconnected through the switch element 5, the touch trace 4 and the data line 2 are controlled to be connected in the interval time period t3 between the display time period t1 and the touch time period t2, and the touch trace 4 and the data line 2 are controlled to be disconnected in the display time period t1 and the touch time period t 2. Among them, the switching element 5 is preferably a thin film transistor. Of course, the touch trace 4 is further connected to the touch chip to detect a change in capacitance of the touch electrode 11 in the touch time period t2 through the touch chip, and the data line 2 is further connected to the display driver chip to apply a gray-scale voltage to the pixel electrode 12 through the display driver chip.
Further, as shown in fig. 3, in the same row of sub-pixels SP, the two pixel electrodes 12 on both sides of the data line 2 are connected to the same data line 2 and respectively connected to two different scan lines 1. For example, taking the first row of sub-pixels SP as an example, the left pixel electrode 12 of the first data line (D1) is connected to the first data line (D1) and the first scan line (G1) through the thin film transistor 3, and the right pixel electrode 12 of the first data line (D1) is connected to the first data line (D1) and the second scan line (G2) through the thin film transistor 3.
In the same column of sub-pixels SP, two adjacent pixel electrodes 12 are connected to two different scanning lines 1, respectively. For example, taking the sub-pixel SP in the first column as an example, the pixel electrode 12 on the lower side of the first scan line (G1) is connected to the first data line (D1) and the first scan line (G1) through the thin film transistor 3, and the pixel electrode 12 on the lower side of the second scan line (G2) is connected to the first data line (D1) and the second scan line (G2) through the thin film transistor 3.
In this embodiment, each touch electrode 11 corresponds to a plurality of sub-pixels SP, and fig. 3 illustrates that one touch electrode 11 corresponds to eight sub-pixels SP. In other embodiments, one touch electrode 11 may correspond to more sub-pixels SP.
Each touch electrode 11 is electrically connected to a plurality of touch traces 4. In this embodiment, each touch electrode 11 is electrically connected to one touch trace 4. In other embodiments, each touch electrode 11 is electrically connected to two or four touch traces 4, a connection wire 6 may be disposed on the array substrate 10, and the touch traces 4 connected to the same touch electrode 11 are electrically connected through the connection wire 6, as shown in fig. 6.
The touch electrode 11 and the pixel electrode 12 are located on different layers and are insulated and isolated by an insulating layer. The touch electrode 11 may be located above or below the pixel electrode 12 (the touch electrode 11 is located below the pixel electrode 12 in fig. 2). Preferably, the touch electrode 11 is a planar electrode, and the pixel electrode 12 is a block electrode or a slit electrode having a plurality of electrode bars integrally disposed in each sub-pixel SP to form a Fringe Field Switching (FFS) mode. Of course, In other embodiments, the pixel electrode 12 and the touch electrode 11 are located on the same layer, but they are insulated and isolated from each other, each of the pixel electrode 12 and the touch electrode 11 may include a plurality of electrode strips, and the electrode strips of the pixel electrode 12 and the electrode strips of the touch electrode 11 are alternately arranged to form an In-Plane Switching (IPS) mode.
As shown in fig. 4, during the display time period t1, each touch electrode 11 is used to apply a common signal (V1 in fig. 4), preferably 0V, and the pixel electrode 12 is applied with a display driving signal (V2 in fig. 4) including gray scale voltages of 0-255 to display different pictures. In the touch time period t2, each touch electrode 11 is used to apply a touch signal (V1 in fig. 4), the display driving signal applied to the pixel electrode 12 is preferably 0V, i.e., no voltage may be applied to the pixel electrode 12 in the touch time period t 2. At the interval time t3, the timing signal (SW in fig. 4) on the timing control chip 40 changes to high level, and the switching element 5 controls the conduction of the touch trace 4 and the data line 2, so that the touch trace 4 and the data line 2 are short-circuited, and the voltage on the pixel electrode 12 is pulled down or raised to be the same as that of the touch electrode 11, i.e. 0V. The display driving signal of each frame is changed in polarity once, and the timing control chip 40 controls the touch trace 4 and the data line 2 to be short-circuited once in each frame, if the pixel electrode 12 applies positive voltage, the voltage on the pixel electrode 12 is pulled down to 0V, and if the pixel electrode 12 applies negative voltage, the voltage on the pixel electrode 12 is pulled up to 0V, so that the charge on the pixel electrode 12 can be released quickly, the shutdown ghost can be eliminated, and the internal power consumption can be reduced effectively.
[ example two ]
Fig. 5 is a schematic plan view of an array substrate according to a second embodiment of the present invention. As shown in fig. 5, the second embodiment of the present invention provides an array substrate that is substantially the same as the first embodiment (fig. 1-4), except that in this embodiment, one touch electrode 11 corresponds to sixteen sub-pixels SP, each touch electrode 11 is electrically connected to two touch traces 4, the array substrate 10 is further provided with a connecting wire 6, and the two touch traces 4 connecting the same touch electrode 11 are electrically connected through the connecting wire 6. The resistance of the touch wiring 4 is reduced, the stability of the touch electrode 11 is enhanced, and the touch cross striations are reduced.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
[ third example ]
Fig. 6 is a schematic structural diagram of the touch display device in an initial state according to the present invention; fig. 7 is a schematic structural diagram of the middle touch display device in a bright state according to the present invention. As shown in fig. 6 and 7, the present invention further provides a touch display device, which includes the array substrate 10.
The touch display device further includes a color filter substrate 20 disposed opposite to the array substrate 10, and a liquid crystal layer 30 located between the array substrate 10 and the color filter substrate 20. In the liquid crystal layer 30, positive liquid crystal molecules, that is, liquid crystal molecules having positive dielectric anisotropy are used.
The color filter substrate 20 is provided with a color resist layer 22 corresponding to the sub-pixels SP and a black matrix 21 separating the color resist layer 22, and the color resist layer 22 includes a red color resist layer, a green color resist layer, and a blue color resist layer and respectively corresponds to the red sub-pixels, the green sub-pixels, and the blue sub-pixels.
An upper polarizer is arranged on the color film substrate 20, a lower polarizer is arranged on the array substrate 10, and a transmission axis of the upper polarizer is perpendicular to a transmission axis of the lower polarizer. For a more detailed description of the touch display device, reference is made to the prior art, which is not repeated herein.
As shown in fig. 6, 7 and 4, in the initial state, the positive liquid crystal molecules in the liquid crystal layer 30 are aligned parallel to the color filter substrate 20 and the array substrate 10, and the alignment direction of the positive liquid crystal molecules on the side close to the color filter substrate 20 is antiparallel to the alignment direction of the positive liquid crystal molecules on the side close to the array substrate 10.
The timing control chip 40 controls the disconnection of the touch trace 4 and the data line 2 through the switch element 5 during the display time period t1 and the touch time period t 2. Specifically, during the display time period t1 (fig. 4), each touch electrode 11 is used to apply a common signal, and a horizontal electric field is formed by the cooperation of the pixel electrode 12 on the array substrate 10 and the touch electrode 11, so as to implement a display function; in the touch time period t2, each touch electrode 11 is used for applying a touch signal to implement a touch function.
The interval time period t3 between the display time period t1 and the touch time period t2 controls the conduction of the touch trace 4 and the data line 2, so that the touch trace 4 and the data line 2 are short-circuited, and the voltage on the pixel electrode 12 is pulled down or raised to be the same as that of the touch electrode 11, namely 0V. The display driving signal of each frame is changed in polarity once, and the timing control chip 40 controls the touch trace 4 and the data line 2 to be short-circuited once in each frame, if the pixel electrode 12 applies positive voltage, the voltage on the pixel electrode 12 is pulled down to 0V, and if the pixel electrode 12 applies negative voltage, the voltage on the pixel electrode 12 is pulled up to 0V, so that the charge on the pixel electrode 12 can be released quickly, the shutdown ghost can be eliminated, and the internal power consumption can be reduced effectively.
The touch display device disclosed by the embodiment utilizes the empty trace on the array substrate as the touch trace, does not influence the aperture opening ratio of the pixel, does not need to increase the manufacturing process, divides the common electrode into a plurality of blocks and takes the common electrode as the touch electrode, can save the manufacturing process of a touch layer, reduces the box thickness, and simultaneously carries out selective short circuit on the touch trace and the data line through the switch element, thereby quickly releasing the electric charge on the pixel electrode, and also can play a role in eliminating shutdown ghost shadow and reducing the output power consumption of the display driving chip.
In this document, the terms of upper, lower, left, right, front, rear and the like are used to define the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the sake of clarity and convenience in technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make some changes or modifications within the technical scope of the present invention without departing from the technical scope of the present invention, and the technical contents of the above disclosure can be utilized to make equivalent embodiments, but the technical contents of the present invention are not broken away from, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. An array substrate is provided, the array substrate (10) is provided with a scanning line (1), a data line (2), a thin film transistor (3), a common electrode and a pixel electrode (12), the array substrate (10) is further provided with a touch-control routing (4) and a switch element (5), the data line (2) and the touch-control routing (4) are located on the same layer and extend along the same direction, the scanning line (1) is respectively crossed with the data line (2) and the touch-control routing (4) in an insulation manner and limited to form a plurality of sub-pixels (SP), the data line (2) and the touch-control routing (4) are spaced apart through the sub-pixels (SP), each pixel electrode (12) corresponds to one sub-pixel (SP) and is electrically connected with the scanning line (1) and the data line (2) adjacent to the thin film transistor (3) through the thin film transistor (3), the common electrode is divided into a plurality of mutually independent touch electrodes (11), each touch wire (4) is electrically connected with one touch electrode (11), and the touch wire (4) is electrically connected with one data line (2) adjacent to the touch wire (4) through the switch element (5).
2. The array substrate of claim 1, wherein a control terminal of the switch element (5) is electrically connected to a timing control chip (40), and the timing control chip (40) controls the touch trace (4) and the data line (2) to be connected or disconnected through the switch element (5);
the disconnection of the touch-control wiring (4) and the data line (2) is controlled in a display time period (t1) and a touch-control time period (t2), each touch-control electrode (11) is used for applying a common signal in the display time period (t1), and each touch-control electrode (11) is used for applying a touch-control signal in the touch-control time period (t 2); and controlling the conduction of the touch-control routing (4) and the data line (2) in an interval time period (t3) between the display time period (t1) and the touch-control time period (t 2).
3. The array substrate of claim 1, wherein in the same row of the sub-pixels (SP), two of the pixel electrodes (12) located at two sides of the data line (2) are connected to the same data line (2) and respectively connected to two different scan lines (1).
4. The array substrate of claim 3, wherein two adjacent pixel electrodes (12) are respectively connected to two different scan lines (1) in the same row of the sub-pixels (SP).
5. The array substrate of claim 1, wherein each touch electrode (11) corresponds to a plurality of the sub-pixels (SP).
6. The array substrate of claim 1, wherein each touch electrode (11) is electrically connected to a plurality of touch traces (4).
7. The array substrate of claim 6, wherein the array substrate (10) is provided with a connection wire (6), and a plurality of touch traces (4) connected to the same touch electrode (11) are electrically connected through the connection wire (6).
8. The array substrate of claim 1, wherein the pixel electrode (12) and the touch electrode (11) are located at different layers and isolated from each other, the pixel electrode (12) is a comb-shaped electrode with slits, and the touch electrode (11) is a planar electrode.
9. A touch display device comprising the array substrate (10) according to any one of claims 1 to 8.
10. The touch display device according to claim 9, further comprising a color filter substrate (20) disposed opposite to the array substrate (10), and a liquid crystal layer (30) disposed between the array substrate (10) and the color filter substrate (20).
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|---|---|---|---|
| CN202021480003.7U CN212569366U (en) | 2020-07-23 | 2020-07-23 | Array substrate and touch display device |
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| CN202021480003.7U CN212569366U (en) | 2020-07-23 | 2020-07-23 | Array substrate and touch display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114356138A (en) * | 2021-12-30 | 2022-04-15 | 厦门天马微电子有限公司 | Touch display panel and display device |
| WO2023044986A1 (en) * | 2021-09-27 | 2023-03-30 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
-
2020
- 2020-07-23 CN CN202021480003.7U patent/CN212569366U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023044986A1 (en) * | 2021-09-27 | 2023-03-30 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
| CN114356138A (en) * | 2021-12-30 | 2022-04-15 | 厦门天马微电子有限公司 | Touch display panel and display device |
| CN114356138B (en) * | 2021-12-30 | 2023-11-21 | 厦门天马微电子有限公司 | Touch display panel and display device |
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