ARRANGEMENT SUBSTRATE, TOUCH-SENSITIVE DISPLAY PANEL AND TOUCH-SENSITIVE DISPLAY DEVICE

Abstract

Array substrate comprising: several contact wires (101); a common electrode layer; a control circuit, wherein the common electrode layer is divided into a plurality of self-capacitive electrodes (10), and wherein the self-capacitive electrodes (10) are electronically connected to the control circuit by the touch wires (101); and several pixel units, wherein each touch wire (101) is electronically connected to the self-capacitive electrode (10) corresponding to the touch wire (10) via a first via (102), wherein at least one of the contact wires (101) is continuous and runs through an entire column of the self-capacitive electrodes (10), wherein, in a direction perpendicular to the array substrate, a projection of the self-capacitive electrode (10) covers projections of a plurality of pixel units, wherein, within the same self-capacitive electrode (10), the first vias (102) on a touch wire (101) are arranged offset from the first vias (102) on an adjacent touch wire (101), and wherein along a direction of the touch wires (101), a distance between two adjacent first vias (102) is greater than or equal to a length of two pixel units.

Description

FIELD OF THE INVENTION

[0001] The disclosure relates generally to the field of touch technology and, more particularly, to an array substrate, a touch-sensitive display panel, and a touch-sensitive display device. BACKGROUND OF THE INVENTION

[0002] Capacitive touch panels can be divided into two types based on the sensing method of the capacitor: self-capacitive and interactive capacitive. Touch display devices can be divided into three types based on the relative position of the panels: in-cell, on-cell, and off-cell. The in-cell touch panel has become an important development trend in touch technology due to its advantages of high integration, thin profile, and outstanding performance.

[0003] Currently, existing touch displays primarily use cell-integrated interactive capacitive touch technology. However, cell-integrated interactive capacitive touch technology suffers from problems such as poor water resistance, low response rate, and inadequate suspension characteristics. Separate drive circuits are required for the display panel electrodes and touch electrodes of the touch panel in the touch display, resulting in high cost of the touch display.

[0004] Based on this, to solve the problems of high cost, low water resistance, low response rate, and inadequate suspension characteristics in cell-integrated interactive capacitive touch technology, a cell-integrated self-capacitive touch technology has also been proposed according to the conventional art. According to cell-integrated self-capacitive touch technology, a common electrode layer on the array substrate is also used as the touch electrode, and the touch electrodes are connected to a control circuit of the array substrate via touch wires. However, vias through which the touch wires are electronically connected to the touch electrodes can cause problems such as visible stripes in the screen display.

[0005] In US 2013 / 0342478 A1, a touch sensing device comprises: a display device including a plurality of pixels and displaying an image; a touch screen including a plurality of touch sensors and included in the display device; display panel driver circuits for driving the display device; a touch sensing circuit for applying a drive signal to the touch sensors to detect a voltage or capacitance change in the touch sensors; a controller for time-dividing a first frame period into a first drive period for displaying an image on the display device and a second drive period for detecting the touch sensors;and a reset control circuit for controlling operations of the display panel driver circuits with a sleep enable signal to initialize the pixels of the display device to a corresponding reset voltage at predetermined intervals between the first drive period and the second drive period;

[0006] CN 104142772 A describes an in-cell touch panel and a display device comprising the same, the in-cell touch panel comprising: an array substrate having data lines provided thereon; a plurality of self-capacitance electrodes provided on a same layer and independently of each other on the array substrate, the self-capacitance electrodes being insulated from the data lines; a touch sensing chip; and a plurality of wires for connecting the self-capacitance electrodes to the touch sensing chip, the wires and the data lines being arranged on the same layer and insulated from each other and having a same wiring direction. BRIEF SUMMARY OF THE INVENTION

[0007] One aspect of the invention is an array substrate. The array substrate comprises a plurality of touch wires, a common electrode layer, and a control circuit, wherein the common electrode layer is divided into a plurality of self-capacitive electrodes, and wherein the self-capacitive electrodes are electronically connected to the control circuit through the touch wires. The array substrate also has a plurality of pixel units. Each touch wire is electronically connected to the self-capacitive electrode corresponding to the touch wire via a first via. At least one of the touch wires is continuous and runs through an entire column of the self-capacitive electrodes. In a direction perpendicular to the array substrate, a projection of the self-capacitive electrode covers projections of a plurality of pixel units.Within the same self-capacitive electrode, the first vias on one touch wire are offset from the first vias on an adjacent touch wire. Additionally, along a direction of the touch wires, the distance between two adjacent first vias is greater than or equal to the length of two pixel units.

[0008] Another aspect of the invention is a touch-sensitive display panel comprising an array substrate. The array substrate comprises a plurality of touch wires, a common electrode layer, and a control circuit, wherein the common electrode layer is divided into a plurality of self-capacitive electrodes, and wherein the self-capacitive electrodes are electronically connected to the control circuit through the touch wires. The array substrate also has a plurality of pixel units. Each touch wire is electronically connected to the self-capacitive electrode corresponding to the touch wire via a first via. At least one of the touch wires is continuous and runs through an entire column of self-capacitive electrodes. In a direction perpendicular to the array substrate, a projection of the self-capacitive electrode covers projections of a plurality of pixel units.Within the same self-capacitive electrode, the first vias on one touch wire are offset from the first vias on an adjacent touch wire. Additionally, along a direction of the touch wires, the distance between two adjacent first vias is greater than or equal to the length of two pixel units.

[0009] Another aspect of the invention is a touch-sensitive display device comprising a touch-sensitive display panel with an array substrate. The array substrate includes a plurality of touch wires, a common electrode layer, and a control circuit, wherein the common electrode layer is divided into a plurality of self-capacitive electrodes, and wherein the self-capacitive electrodes are electronically connected to the control circuit through the touch wires. The array substrate also includes a plurality of pixel units. Each touch wire is electronically connected to the self-capacitive electrode corresponding to the touch wire via a first via. At least one of the touch wires is continuous and extends through an entire column of the self-capacitive electrodes.In a direction perpendicular to the array substrate, one projection of the self-capacitive electrode covers projections of multiple pixel units. Within the same self-capacitive electrode, the first vias on one touch wire are offset from the first vias on an adjacent touch wire. Additionally, along a direction of the touch wires, the distance between two adjacent first vias is greater than or equal to the length of two pixel units. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following briefly describes the drawings to be used in the description of embodiments or the prior art, so that the technical solutions according to the embodiments of the present invention or according to the prior art become clearer. It should be understood that the drawings in the following description represent only some embodiments of the present invention. Those skilled in the art can derive additional drawings based on these drawings without any creative effort. Fig. 1 is a schematic plan view of a structure of an array substrate according to an embodiment of the disclosure; Fig. 2 is a schematic sectional view of a structure of an array substrate according to an embodiment of the disclosure; Fig. 3 is a schematic sectional view of a structure of another array substrate according to an embodiment of the disclosure; Fig. 4 is a schematic distribution diagram of first vias in an array substrate according to an embodiment of the disclosure; Fig. 5 is a schematic distribution diagram of first vias in an array substrate according to the conventional technique; Fig. Figure 6a is a rough layout diagram in which the first vias are separated by two pixel units; Fig. Figure 6b is a rough layout diagram in which the first vias are separated by three pixel units; Fig. 6c is a rough layout diagram in which the first vias are separated by four pixel units; and Fig. 7 is a schematic distribution diagram of first vias and second vias in an array substrate according to another embodiment of the disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] The technical solutions according to the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are, of course, only some embodiments according to the present invention. All other embodiments that those skilled in the art can arrive at without creative effort based on the embodiments in the present invention are within the scope of the present invention.

[0012] An array substrate according to one embodiment of the disclosure is provided. The array substrate includes a common electrode layer and a control circuit IC. The common electrode layer is divided into a plurality of block-shaped self-capacitive electrodes 10 that are insulated from one another. The self-capacitive electrodes 10 are electronically connected to the control circuit IC by touch wires 101. Fig. 1 is a plan view of the array substrate.

[0013] As in Fig. 2 and Fig. 3, the array substrate according to the embodiment further includes a glass substrate 20, a plurality of gate lines and a plurality of data lines on the glass substrate 20, and a plurality of pixel units (not shown) surrounded by the gate lines and the data lines. In a direction perpendicular to the array substrate, one projection of the block-shaped self-capacitive electrode 10 covers one projection of a plurality of pixel units. The number of pixel units whose projections are covered by the projection of the block-shaped self-capacitive electrode 10 is set as desired, which will not be described further here. The pixel unit includes a thin-film transistor 21 and a pixel electrode 22. A gate 210 of the thin-film transistor 21 is electronically connected to the gate line. A source 211 of the thin-film transistor 21 is electronically connected to the data line.And a drain 212 of the thin film transistor 21 is electronically connected to the pixel electrode 22.

[0014] In the array substrate, the common electrode layer, ie, the self-capacitive electrode 10, is located between the thin-film transistor 21 and the pixel electrode 22.

[0015] And an insulating layer 30 is located between the common electrode layer, ie, the self-capacitive electrode 10, and the pixel electrode 22. Fig. 2 is a schematic sectional view of the structure of the array substrate. Optionally, in other embodiments of the present disclosure, as shown in Fig. 3, the pixel electrode 22 is disposed between the thin film transistor 21 and the common electrode layer, i.e., the self-capacitive electrode 10, and an insulating layer 30 is disposed between the common electrode layer, i.e., the self-capacitive electrode 10, and the pixel electrode 22. Optionally, the touch wires 101 are disposed in the same layer with the pixel electrode 22. Of course, the present disclosure is not limited thereto.

[0016] As in Fig. 2 and Fig. 3, the touch wire 101 is electronically connected to the self-capacitive electrode 10 corresponding to the touch wire 101 via a first via 102. As shown in Fig. 4, in the embodiment, at least one of the touch wires 101 is continuous and runs along the direction of the touch wires 101 through all of the self-capacitive electrodes 10, that is, through an entire column of the self-capacitive electrodes 10. Optionally, all of the touch wires 101 are continuous and run through the entire column of the self-capacitive electrodes 10. The advantageous effects of the above provision will be described below. In the event that a touch wire 101 is broken, multiple vias must be arranged between the touch wire 101 and the self-capacitive electrodes 10 to electronically connect each segment of the touch wire 101 and the self-capacitive electrodes 10, thus arranging too many vias.Optionally, at least two touch wires passing through an entire column of self-capacitive electrodes 10 are included corresponding to each column of self-capacitive electrodes 10. In the conventional technique, only one touch wire passing through an entire column of self-capacitive electrodes 10 is included corresponding to each column of self-capacitive electrodes 10. According to the array substrate provided here, the number of vias is reduced, and the problem of stripes visible to the human eye appearing in the screen display is solved or alleviated. Optionally, along the direction of the touch wires, a distance between two adjacent first vias is greater than or equal to the length of two pixel units.Optionally, in a direction perpendicular to the array substrate, a projection of two adjacent first vias 102 electronically connected to the same touch wire 101 is separated by the projection of at least two pixel units. That is, along a direction in which the touch wire 101 extends, two adjacent first vias 102 are separated by at least two pixel units. Compared with the scheme in the conventional technique, as shown in FIG. Fig. 5, each pixel unit has a first via, in the array substrate according to the embodiment of the disclosure, the problem that stripes visible to the human eye appear in the screen display due to a large number or a high density of the first vias 102 is solved by reducing the number and density of the first vias 102.

[0017] As in Fig. 6a to 6c, each grid represents a pixel unit. As shown in Fig. 6a, two adjacent first vias 102 along the same touch wire 101 are separated by two pixel units in a direction parallel to the touch wires 101. As shown in Fig. 6b, in the direction along the touch wires 101, two adjacent first vias 102 corresponding to the same touch wire 101 are separated by three pixel units. And as shown in Fig. 6c, in the direction along the touch wires 101, two adjacent first vias 102 corresponding to the same touch wire 101 are separated by four pixel units.

[0018] Furthermore, the larger the number of pixel units between two adjacent first vias 102, the lower the density of the first vias 102. However, considering the manufacturing process and other factors, the number of pixel units between two adjacent first vias 102 is preferably eight. That is, in the direction perpendicular to the array substrate, the projection of two adjacent first vias 102 electronically connected to the same touch wire 101 is separated by the projection of eight pixel units, that is, two adjacent first vias 102 are separated by eight pixel units along the direction in which the touch wires 101 extend, thereby further reducing the number and density of the first vias 102.

[0019] As in Fig. As shown in Figure 4, the first vias 102 corresponding to two adjacent touch wires 101 are staggered. That is, a first via 102 corresponding to one touch wire 101 is located between two adjacent first vias 102 corresponding to another touch wire 101 adjacent to the one touch wire 101. Thus, the uniformity of the distribution of the first vias 102 is improved, and the problem of stripes visible to the human eye appearing in the screen display is avoided.

[0020] According to the array substrate provided in the embodiment, the touch wire is electronically connected to the self-capacitive electrodes corresponding to the touch wire via the first via, at least one of the touch wires is continuous and passes through the common electrode layer, and in the direction perpendicular to the array substrate, the projection of two adjacent first vias electronically connected to the same touch wire is separated by the projection of at least two pixel units. In this way, the problem of stripes or black dots visible to the human eye appearing in the screen display due to a large number or high density of the first vias is solved by reducing the number and density of the first vias.

[0021] In addition to the protruding touch wires 101 and the first vias 102 separated by at least two pixel units, an array substrate according to another embodiment of the disclosure further includes an additional electrode line 103. The additional electrode line 103 is electronically connected to the self-capacitive electrode 10 via a second via 104 to reduce the resistance of the self-capacitive electrode. As shown in Fig. As shown in Figure 7, projections of the additional electrode lines 103 provided at different self-capacitive electrodes 10 are interrupted line segments in a direction perpendicular to the array substrate. This means that the additional electrode lines 103 at different self-capacitive electrodes 10 are separated from each other.

[0022] To avoid the problem of visible stripes due to a large number or high density of the second vias 104, the projections of two adjacent second vias 104 that are electronically connected to the same additional electrode line 103 are separated by a projection of at least two pixel units in the direction perpendicular to the array substrate. This means that in the direction in which the additional electrode line 103 extends, two adjacent second vias 104 are separated by at least two pixel units, thereby reducing the number and density of the second vias 104.

[0023] Furthermore, in the direction perpendicular to the array substrate, projections of two adjacent second vias 104 that are electronically connected to the same additional electrode line 103 are separated by the projection of eight pixel units. This means that in the direction in which the additional electrode line 103 extends, two adjacent second vias 104 are separated by eight pixel units.

[0024] Optionally, in other embodiments of the disclosure, the problem of visible stripes appearing in the screen display can be solved by evenly distributing the first vias 102 and the second vias 104. For example, the additional electrode lines 103 are evenly distributed on the self-capacitive electrodes 10, and the touch wires 101 are evenly distributed between the additional electrode lines 103. In this way, the first vias 102 and the second vias 104 are evenly distributed, and the number of the first vias 102 and the second vias 104 is reduced, so that the problem of visible stripes appearing in the screen display can be solved.

[0025] According to the array substrate provided in the embodiment, the touch wire is electronically connected to the self-capacitive electrode via the first via, which corresponds to the touch wire. The additional electrode line is electronically connected to the self-capacitive electrode via a second via to reduce the resistance of the self-capacitive electrode. At least one of the touch wires is continuous and passes through the common electrode layer. In the direction perpendicular to the array substrate, two adjacent first vias are separated by at least two pixel units, and two adjacent second vias are separated by at least two pixel units.In this way, the problem of stripes or black spots visible to the human eye in the screen display resulting from a large number or high density of vias is solved by reducing the number and density of the first vias and second vias.

[0026] According to the embodiment of the disclosure, there is also provided a touch display panel including one of the above-mentioned array substrates.

[0027] According to the embodiment of the disclosure, a touch-sensitive display device is also provided which has the above touch-sensitive display panels.

[0028] According to the touch-sensitive display panel and the touch-sensitive display device provided in the embodiment, the projection of a first via is covered by at least the projections of two pixel units in the direction perpendicular to the array substrate. Thus, the problem of stripes visible to the human eye occurring in the screen display due to a large number or high density of the first vias is solved by reducing the number and density of the first vias.

[0029] The embodiments of the present invention have been described herein sequentially, with emphasis on the difference between each embodiment and the other embodiments; thus, various embodiments may be referred to with respect to the same or corresponding parts among the embodiments. The description of the embodiments found herein will enable those skilled in the art to make or use the present invention. Numerous modifications to the embodiments will be apparent to those skilled in the art, and the general principle found herein may be embodied in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments described herein, but is to be construed in accordance with the broadest scope consistent with the principle and novel features disclosed herein.

Claims

[1] Array substrate comprising: several contact wires (101); a common electrode layer; a control circuit, wherein the common electrode layer is divided into a plurality of self-capacitive electrodes (10), and wherein the self-capacitive electrodes (10) are electronically connected to the control circuit by the touch wires (101); and several pixel units, wherein each touch wire (101) is electronically connected to the self-capacitive electrode (10) corresponding to the touch wire (10) via a first via (102), wherein at least one of the contact wires (101) is continuous and runs through an entire column of the self-capacitive electrodes (10), wherein, in a direction perpendicular to the array substrate, a projection of the self-capacitive electrode (10) covers projections of a plurality of pixel units, wherein, within the same self-capacitive electrode (10), the first vias (102) on a touch wire (101) are arranged offset from the first vias (102) on an adjacent touch wire (101), and wherein along a direction of the touch wires (101), a distance between two adjacent first vias (102) is greater than or equal to a length of two pixel units. [2] An array substrate according to claim 1, wherein all of the contact wires (101) are continuous and extend through the entire column of the self-capacitive electrodes (10). [3] The array substrate according to claim 1 or 2, further comprising a plurality of additional electrode lines (103) which are electronically connected to the self-capacitive electrodes (10) via second vias (104), wherein, in the direction perpendicular to the array substrate, projections of the additional electrode lines (103) on different self-capacitive electrodes (10) are separate line segments. [4] An array substrate according to claim 3, wherein, in the direction perpendicular to the array substrate, projections of two adjacent second vias (105) electronically connected to the same additional electrode line (103) are separated by a projection of at least two pixel units. [5] The array substrate according to claim 3, wherein the first vias (102) and the second vias (104) are evenly distributed on the self-capacitive electrodes (10). [6] The array substrate according to claim 5, wherein the additional electrode lines (103) are evenly distributed on the self-capacitive electrodes (10), and wherein the touch wires (101) are evenly distributed between the additional electrode lines (103). [7] The array substrate according to claim 1, further comprising a plurality of pixel electrodes (22), wherein the touch wires (101) are located in the same layer as the pixel electrodes (22). [8] An array substrate according to claim 7, wherein: A) the pixel electrodes (22) are arranged between the common electrode layer and a substrate of the array substrate; or B) the common electrode layer is arranged between the pixel electrodes (22) and a substrate of the array substrate. [9] The array substrate according to claim 4, wherein, in the direction perpendicular to the array substrate, projections of two adjacent first vias (102) electronically connected to the same touch wire (101) are separated by a projection of eight pixel units, and wherein, in the direction perpendicular to the array substrate, projections of two adjacent second vias (104) electronically connected to the same additional electrode line (103) are separated by the projection of eight pixel units. [10] A touch-sensitive display panel comprising an array substrate, the array substrate comprising the array substrate according to any one of claims 1 to 9. [11] A touch-sensitive display device comprising the touch-sensitive display panel according to claim 10.

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