阅读说明：本技术 阵列基板及触控信号线的修复方法及显示面板 (array substrate, touch signal line repairing method and display panel ) 是由 黄蕾 刘柱 于 2019-08-08 设计创作，主要内容包括：本发明公开了一种阵列基板,包括：衬底,所述衬底包括显示区域和边框区域；设置在所述衬底上的多个触控电极；多条触控信号线,所述触控信号线与所述触控电极一一对应设置并电连接；位于所述边框区域的第一修复线和第二修复线；多条与驱动芯片连接的触控信号引线；当所述触控信号线发生断线时,所述触控信号线、所述第一修复线、任意一条所述触控信号引线和第二修复线为导通状态。本发明通过修复线实现了对阵列基板中断路触控信号线的修复,解决了现有技术的问题,实现了对触控信号线的修复,提高了生产良率,同时节约了成本。(the invention discloses an array substrate, comprising: a substrate including a display area and a bezel area; a plurality of touch electrodes disposed on the substrate; the touch signal lines and the touch electrodes are arranged in a one-to-one correspondence and are electrically connected; the first repairing line and the second repairing line are positioned in the frame area; a plurality of touch signal leads connected with the driving chip; when the touch signal line is broken, the touch signal line, the first repairing line, any one of the touch signal lead lines and the second repairing line are in a conducting state. According to the invention, the repair of the broken touch signal wires in the array substrate is realized through the repair wires, the problems in the prior art are solved, the repair of the touch signal wires is realized, the production yield is improved, and the cost is saved.)

1. An array substrate, comprising:

a substrate including a display area and a bezel area;

A plurality of touch electrodes disposed on the substrate; the touch electrodes are positioned in the display area;

the touch signal lines and the touch electrodes are arranged in a one-to-one correspondence and are electrically connected;

The first repairing line and the second repairing line are positioned in the frame area; the first repairing line, the second repairing line and the touch signal line are different in layer;

The projection of the first repairing line on the substrate is crossed with the first end of each touch signal line; the projection of the second repairing line on the substrate is crossed with the second end of each touch signal line; the projection of a second repairing wire on the substrate is arranged in a crossed mode with the first repairing wire;

the touch signal lead wires are connected with the driving chip, and the projection of the touch signal lead wires on the substrate is crossed with the first repairing wire;

When the touch signal line is broken, the touch signal line, the first repairing line, any one of the touch signal lead lines and the second repairing line are in a conducting state.

2. The array substrate of claim 1, wherein the second repair line comprises a first sub-repair line and a second sub-repair line, and ends of the first sub-repair line and the second sub-repair line are connected to form an L shape; the projection of the first sub-repairing line on the substrate is crossed with the second end of each touch signal line;

And the projection of the second sub-repairing line on the array substrate is crossed with the first repairing line.

3. The array substrate of claim 1, further comprising:

And the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

4. the method for repairing the touch signal line based on the array substrate of claim 1, wherein a conducting pad is arranged in an overlapping area of the first repairing line and the touch signal line, an overlapping area of the second repairing line and the first repairing line, and an overlapping area of the touch signal lead and the first repairing line; the repairing method comprises the following steps:

Melting the conducting pad of the overlapped area of the first repairing line and the open-circuit touch signal line, melting the conducting pad of the overlapped area of the second repairing line and the first repairing line, and melting the conducting pad of the overlapped area of the touch signal lead and the first repairing line to be electrically connected.

5. a display panel, comprising: an array substrate according to any one of claims 1 to 3 and a driving chip disposed on the array substrate;

the driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

6. an array substrate, comprising:

a substrate including a display area and a bezel area;

A plurality of touch electrodes disposed on the substrate; the touch electrodes are positioned in the display area;

The touch signal lines and the touch electrodes are arranged in a one-to-one correspondence and are electrically connected;

the first repairing line and the second repairing line are positioned in the frame area; the first repairing line, the second repairing line and the touch signal line are different in layer;

the projection of the first repairing line on the substrate is crossed with the first end of each touch signal line;

The projection of the second repairing line on the substrate is crossed with the second end of each touch signal line; the projection of a second repairing wire on the substrate is arranged in a crossed mode with the first repairing wire;

The touch control signal leads are connected with the driving chip, and each touch control signal lead corresponds to one group of touch control electrodes respectively; the projection of the touch signal lead on the substrate is crossed with the first repairing line;

when the touch signal line is broken, the touch signal line, the first repairing line, the touch signal lead corresponding to the broken touch electrode and the second repairing line are in a conducting state.

7. the array substrate of claim 6, wherein the second repair line comprises a first sub-repair line and a second sub-repair line, and ends of the first sub-repair line and the second sub-repair line are connected to form an L shape; the projection of the first sub-repairing line on the substrate is crossed with the second end of each touch signal line;

And the projection of the second sub-repairing line on the array substrate is crossed with the first repairing line.

8. The array substrate of claim 6, further comprising:

And the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

9. The method for repairing the touch signal line based on the array substrate of claim 6, wherein a conducting pad is arranged in an overlapping area of the first repairing line and the touch signal line, an overlapping area of the second repairing line and the first repairing line, and an overlapping area of the touch signal lead and the first repairing line; the repairing method comprises the following steps:

melting the conducting pad of the overlapped area of the first repairing line and the open-circuit touch signal line, melting the conducting pad of the overlapped area of the second repairing line and the first repairing line, and melting the conducting pad of the overlapped area of the touch signal lead corresponding to the open-circuit touch signal line and the first repairing line to be electrically connected.

10. A display panel, comprising: an array substrate according to any one of claims 6 to 8 and a driving chip disposed on the array substrate;

the driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

Technical Field

the invention relates to the field of liquid crystal display, in particular to an array substrate, a method for repairing a touch signal line and a display panel.

Background

most of existing display panels are display panels with integrated display functions and touch functions, the Incell technology is to divide a whole-surface electrode into array-type touch electrodes (sensors) as shown in fig. 1, each electrode is connected with a driving chip IC through a touch signal line M3, and display and touch switching is realized in a time division multiplexing mode.

if the connection line between the touch electrode of the touch panel and the driving chip IC is broken, not only the touch function of the touch electrode cannot be realized, but also the covered pixel area cannot be displayed normally, thereby reducing the yield of products. And thus repair of the corresponding open signal trace is required.

disclosure of Invention

in order to solve the above technical problems, the present invention provides an array substrate, a method for repairing a touch signal line, and a display panel, so as to solve the problem that there is no effective touch signal line disconnection repairing in the prior art.

the technical scheme provided by the invention is as follows:

The invention discloses an array substrate, comprising:

a substrate including a display area and a bezel area;

a plurality of touch electrodes disposed on the substrate; the touch electrodes are positioned in the display area;

the touch signal lines and the touch electrodes are arranged in a one-to-one correspondence and are electrically connected;

the first repairing line and the second repairing line are positioned in the frame area; the first repairing line, the second repairing line and the touch signal line are different in layer;

the projection of the first repairing line on the substrate is crossed with the first end of each touch signal line;

the projection of the second repairing line on the substrate is crossed with the second end of each touch signal line; the projection of a second repairing wire on the substrate is arranged in a crossed mode with the first repairing wire;

The touch signal lead wires are connected with the driving chip, and the projection of the touch signal lead wires on the substrate is crossed with the first repairing wire;

when the touch signal line is broken, the touch signal line, the first repairing line, any one of the touch signal lead lines and the second repairing line are in a conducting state.

preferably, the second repairing line comprises a first sub repairing line and a second sub repairing line, and the ends of the first sub repairing line and the second sub repairing line are connected to form an L shape; the projection of the first sub-repairing line on the substrate is crossed with the second end of each touch signal line;

and the projection of the second sub-repairing line on the substrate is crossed with the first repairing line.

preferably, the method further comprises the following steps:

and the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

The invention also discloses a method for repairing the touch signal wire of the array substrate, wherein conducting pads are arranged in the overlapping area of the first repairing wire and the touch signal wire, the overlapping area of the second repairing wire and the first repairing wire and the overlapping area of the touch signal lead and the first repairing wire; the repairing method comprises the following steps:

melting the conducting pad of the overlapped area of the first repairing line and the open-circuit touch signal line, melting the conducting pad of the overlapped area of the second repairing line and the first repairing line, and melting the conducting pad of the overlapped area of the touch signal lead and the first repairing line to be electrically connected.

The present invention also discloses a display panel, comprising: the array substrate and the driving chip are arranged on the array substrate;

The driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

the invention also discloses an array substrate, comprising:

A substrate including a display area and a bezel area;

A plurality of touch electrodes disposed on the substrate; the touch electrodes are positioned in the display area;

the touch signal lines and the touch electrodes are arranged in a one-to-one correspondence and are electrically connected;

the first repairing line and the second repairing line are positioned in the frame area; the first repairing line, the second repairing line and the touch signal line are different in layer;

the projection of the first repairing line on the substrate is crossed with the first end of each touch signal line;

The projection of the second repairing line on the substrate is crossed with the second end of each touch signal line; the projection of a second repairing wire on the substrate is arranged in a crossed mode with the first repairing wire;

the touch control signal leads are connected with the driving chip, and each touch control signal lead corresponds to one group of touch control electrodes respectively; the projection of the touch signal lead on the substrate is crossed with the first repairing line;

when the touch signal line is broken, the touch signal line, the first repairing line, the touch signal lead corresponding to the broken touch electrode and the second repairing line are in a conducting state.

preferably, the second repairing line comprises a first sub repairing line and a second sub repairing line, and the ends of the first sub repairing line and the second sub repairing line are connected to form an L shape; the projection of the first sub-repairing line on the substrate is crossed with the second end of each touch signal line;

And the projection of the second sub-repairing line on the substrate is crossed with the first repairing line.

Preferably, the method further comprises the following steps:

and the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

The invention also discloses a method for repairing the touch signal wire of the array substrate, wherein conducting pads are arranged in the overlapping area of the first repairing wire and the touch signal wire, the overlapping area of the second repairing wire and the first repairing wire and the overlapping area of the touch signal lead and the first repairing wire; the repairing method comprises the following steps:

melting a conducting pad of an overlapping area of the first repairing line and the open-circuit touch signal line, melting a conducting pad of an overlapping area of the second repairing line and the first repairing line, and melting a conducting pad of an overlapping area of the touch signal lead corresponding to the open-circuit touch signal line and the first repairing line to be electrically connected.

the present invention also discloses a display panel, comprising: the array substrate and the driving chip are arranged on the array substrate;

The driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

compared with the prior art, the method and the device have the advantages that the existing repair lines are utilized to repair the disconnected touch signal lines in the array substrate, additional repair lines are not needed, the problems in the prior art are solved, the touch signal lines are repaired, the production yield is improved, and meanwhile, the cost is saved.

drawings

The present invention will be further described in the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic diagram illustrating the distribution of touch electrodes and touch signal lines of a touch panel in the prior art;

FIG. 2 is a schematic view of an array substrate according to the present invention;

fig. 3 is a schematic view illustrating a repairing step of a method for repairing a touch signal line of an array substrate according to the present invention;

fig. 4 is a schematic diagram of a preferred embodiment of a repairing method of a touch signal line of an array substrate according to the present invention;

FIG. 5 is a schematic view of an array substrate according to the present invention;

fig. 6 is a schematic diagram illustrating a repairing step of a method for repairing a touch signal line of an array substrate according to the present invention;

Fig. 7 is a schematic diagram of a method for repairing a touch signal line of an array substrate according to a preferred embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

for the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

in order to ensure that the load of each touch signal line is the same, each touch signal line M3 runs through the display area (AA area) of the whole panel and is designed to be equal in length.

since the number of touch electrode sensors is large, the touch electrode sensors are generally performed in a group scanning manner through the internal MUX, the same color is in one group, and the driving chip IC performs touch scanning on only one group at each time point. During touch scanning, there are two cases (current cases of each IC) for the non-current set of touch signal lead outputs: A. same as the current group drive waveform; B. floating;

aiming at the situation A, the invention discloses an array substrate and a method for repairing a touch signal line.

Fig. 2 is a schematic view of an array substrate according to the present invention. As shown in fig. 2, an array substrate includes:

a substrate (not shown) including a display area AA and a bezel area B;

a plurality of touch electrodes sensor disposed on the substrate; the plurality of touch electrode sensors are positioned in the display area AA;

A plurality of touch signal lines M3, wherein the touch signal lines M3 are disposed in one-to-one correspondence with the touch electrodes and electrically connected thereto;

A first repair line L1 and a second repair line L2 located at the bezel region B; the first repairing line L1, the second repairing line L2 and the touch signal line M3 are all different layers; the projection of the first repairing line on the substrate is arranged to cross the first end of each touch signal line M3 (indicated by a circle in the figure); the projection of the second repairing line on the substrate is crossed with the second end of each touch signal line (indicated by a circle part in the figure); a projection of a second repair line L2 on the substrate is arranged to cross the first repair line L1 (indicated by a circle in the figure);

Specifically, the second repair line L2 includes a first repair sub-line L21 and a second repair sub-line L22, and ends of the first repair sub-line L21 and the second repair sub-line L22 are connected to form an L shape; the projection of the first sub-repair line L21 on the substrate is arranged to cross the second end of each touch signal line; the projection of a second sub-repairing line L22 on the substrate is arranged to cross the first repairing line;

and the projection of the touch signal lead wires on the substrate is crossed with the first repairing wire (indicated by a circle part in the figure). It should be noted that the number of touch signal leads reserved for touch channel is generally four, and is numbered SX1-SX4, and the following embodiment takes 4 touch signal leads as an example, but the invention is not limited to this.

the array substrate further includes a driving chip IC, and the driving chip IC transmits the touch signal to the touch electrode sensor through the touch signal line M3. When the touch signal wire M3 is broken, the reserved touch signal lead SXX is connected with the driving chip IC and the first repairing wire L1, and the driving signal lead SXX and the original touch signal lead in the driving chip IC drive the broken touch signal wire M3 together, so that the driving capability is increased.

when the touch signal line M3 is disconnected, the touch signal line M3, the first repair line L1, any one of the touch signal lead lines SXX (SX 1 is taken as an example in fig. 2), and the second repair line L2 are turned on.

preferably, the array substrate further includes: and the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

Preferably, the first repair line L1 and the second repair line L2 are metal lines, metal oxide lines or other conductive materials.

The invention also discloses a method for repairing the touch signal wire of the array substrate, wherein conducting pads are arranged in the overlapping region (shown by the circle part in the figure) of the first repairing wire and the touch signal wire, the overlapping region (shown by the circle part in the figure) of the second repairing wire and the first repairing wire and the overlapping region (shown by the circle part in the figure) of the touch signal lead wire and the first repairing wire of the array substrate; the repairing method comprises the following steps:

And melting the conducting pad of the overlapping area of the first repairing wire and the open-circuit touch signal wire, melting the conducting pad of the overlapping area of the second repairing wire and the first repairing wire, and melting the conducting pad of the overlapping area of the touch signal lead wire and the first repairing wire to be electrically connected by adopting a laser repairing mode.

Fig. 3 is a schematic view illustrating a repairing step of a method for repairing a touch signal line of an array substrate according to the present invention. As shown in fig. 3, the specific implementation is:

firstly, laser welding a second end of a broken touch signal line M3 connected with a driving chip IC and a first repairing line L1;

Welding a first end of the touch signal line M3 with a first sub-repairing line L21;

welding one touch signal lead SX1 with the first repairing line L1 through laser;

Fourthly, the first repairing wire L1 and the second repairing wire L22 are subjected to laser welding;

through laser welding of the points (i), (ii), (iii) and (iv), the touch signal line M3 passes through the first repair line L1, the first sub-repair line L21 and the second sub-repair line L22, and is driven by two touch channels (touch channels) of the driving chip IC.

preferably, as shown in fig. 4, at present, both the output terminal and the input terminal of the driver chip IC have PASS pins (connection pins), which are connected together inside the driver chip IC and are not connected to the inside of other pins, such as PASS1 (first pin) and PASS2 (second pin) in fig. 4, which are in a connected state. The second repair line L2 may be connected to the PASS2 and the first repair line L1 may be connected to the PASS1 at an early stage of panel design. When repairing, only the laser welding of the first, second and third points is needed, and one laser point is reduced compared with the prior art, so that the repairing time can be shortened, the single-chip repairing speed is improved, and the production line operation is facilitated.

The present invention also discloses a display panel, comprising: the array substrate and the driving chip are arranged on the array substrate; the driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

Aiming at the situation B, the invention discloses another array substrate and a touch signal line repairing method.

fig. 5 is a schematic view of an array substrate according to the present invention. As shown in fig. 5, an array substrate includes:

a substrate including a display area AA and a bezel area B;

A plurality of touch electrodes sensor disposed on the substrate; the plurality of touch electrode sensors are positioned in the display area AA;

the touch signal lines M3 are arranged in a one-to-one correspondence with the touch electrode sensors and electrically connected to the touch signal lines M3;

the first repairing line and the second repairing line are positioned in the frame area B; the first repairing line L1, the second repairing line L2 and the touch signal line M3 are all different layers; a projection of the first repair line L1 on the substrate is arranged to cross a first end of each of the touch signal lines M3 (indicated by a circle in the figure); the projection of the second repairing line on the substrate is arranged to cross the second end of each touch signal line M3 (indicated by a circle in the figure); the projection of a second repairing wire on the substrate is arranged to cross the first repairing wire L1 (indicated by a circle in the figure);

Specifically, the second repair line L2 includes a first repair sub-line L21 and a second repair sub-line L22, and ends of the first repair sub-line L21 and the second repair sub-line L22 are connected to form an L shape; the first sub-repair line L21 is arranged to cross the second end of each touch signal line M3 in the projection of the substrate; the projection of a second sub-repairing line L22 on the substrate is arranged to cross the first repairing line;

the touch control circuit comprises a plurality of touch control signal leads SXX connected with a driving chip IC, wherein each touch control signal lead SXX corresponds to a group of touch control electrodes sensor; the projection of the touch signal lead SXX on the substrate is arranged to cross the first repair line L1 (indicated by a circle in the figure). It should be noted that the number of touch signal leads reserved for touch channel is generally four, and is numbered SX1-SX4, and the following embodiment takes 4 touch signal leads as an example, but the invention is not limited to this.

Reserved SX1-SX4 are pre-assigned to 1-4 scan groups, respectively. Before repair, it is necessary to determine which group the open touch electrode sensor belongs to through the sensor grouping diagram, as shown in fig. 5, assuming that the touch electrode sensor belongs to the scanning two groups, the touch signal lead of the same group is SX 2.

the array substrate further includes a driving chip IC, and the driving chip IC transmits the touch signal to the touch electrode sensor through the touch signal line M3. When the touch signal wire M3 is broken, the reserved touch signal lead SXX corresponding to the broken touch signal wire M3 is connected with the driving chip IC and the first repairing wire L1, and the broken touch signal wire M3 is driven together with the touch signal lead SXX of the original broken wire in the driving chip IC, so that the driving capability is increased.

when the touch signal line M3 is disconnected, the touch signal line M3, the first repair line L1, the touch signal lead SXX corresponding to the disconnected touch electrode sensor, and the second repair line L2 are turned on.

preferably, the array substrate further includes: and the public electrode layer comprises a plurality of public electrode blocks, and the public electrode blocks are multiplexed as the touch electrodes.

Preferably, the first repair line L1 and the second repair line L2 are metal lines, metal oxide lines or other conductive materials.

Fig. 6 is a schematic view illustrating a repairing step of a method for repairing a touch signal line of an array substrate according to the present invention. As shown in fig. 6, the specific implementation is:

Reserved SX1-SX4 are pre-assigned to 1-4 scan groups, respectively. Before repair, it needs to determine which group the bad sensor belongs to through the sensor grouping map, and assuming that this sensor belongs to the scanning two groups, the reserved SX of the same group is SX 2.

Firstly, laser welding a second end of a broken touch signal line M3 connected with a driving chip IC and a first repairing line L1;

welding a first end of the touch signal line M3 with a first sub-repairing line L21;

welding the touch signal lead SX2 and the first repairing line L1 through laser;

Fourthly, the first repairing wire L1 and the second repairing wire L22 are subjected to laser welding;

through laser welding of the points (i), (ii), (iii) and (iv), the touch signal line M3 passes through the first repair line L1, the first sub-repair line L21 and the second sub-repair line L22, and is driven by two touch channels (touch channels) of the driving chip IC.

preferably, at present, both the output terminal and the input terminal of the driver chip IC have PASS pins, which are connected together inside the driver chip IC and are not connected with the inside of other pins, as shown in fig. 7, that is, PASS1 and PASS2 are in a connected state. The second repair line L2 may be connected to the PASS2 and the first repair line L1 may be connected to the PASS1 at an early stage of panel design. When repairing, only the laser welding of the first, second and third points is needed, and one laser point is reduced compared with the prior art, so that the repairing time can be shortened, the single-chip repairing speed is improved, and the production line operation is facilitated.

According to the invention, the overlapped area of the touch signal wire and the repair wire is conducted through a laser welding process, so that the repair of the broken touch signal wire in the array substrate is realized, the repair wire does not need to be additionally added, the problems in the prior art are solved, the repair of the touch signal wire is realized, the production yield is improved, and the cost is saved.

the present invention also discloses a display panel, comprising: the array substrate and the driving chip are arranged on the array substrate; the driving chip is electrically connected with the touch signal line of the array substrate and is used for transmitting common electrode voltage to the common electrode block of the display area of the array substrate through the touch signal line and transmitting touch signals to the touch electrode block of the display area of the array substrate through the touch signal line, wherein the common electrode block is reused as a common electrode.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.