Touch control substrate, maintenance method thereof and electronic device

Abstract

The present invention provides a touch control substrate, a maintenance method thereof and an electronic device. The touch control substrate includes a touch control identification area and a routing area, the touch control substrate includes a substrate and touch control electrodes and touch control signal lines located on the substrate, the touch control electrodes are arranged in the touch control identification area, and the touch control electrodes are connected to a touch control chip through touch control signal lines located in the routing area; the number of the touch control signal lines is multiple groups, and each group of the touch control signal lines includes a first signal line and a second signal line arranged in a stacked manner; the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of the same group on the substrate, and at least part of the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of other groups on the substrate. The embodiments of the present invention help to improve the maintainability of the touch control substrate.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of touch control technology, and in particular to a touch control substrate and a maintenance method thereof, and an electronic device. Background Art

[0002] With the development of electronic devices, Touch On Cell (display external touch) display touch modules have become a major choice due to their relatively high integration and reliability. However, the touch module may have a local short circuit, affecting the normal use of the touch module. After research, it was found that for the touch area, since the interval between sensors is relatively large, the possibility of short circuit is relatively low. Short circuit mainly occurs in the routing area of ​​the touch signal line that transmits the touch signal. However, when the wiring of the touch module is short-circuited, it is difficult to repair. Summary of the invention

[0003] The embodiments of the present invention provide a touch control substrate and a maintenance method thereof and an electronic device to solve the problem that the maintenance of a touch control module is difficult when a short circuit occurs in the wiring.

[0004] To solve the above problems, the present invention is achieved as follows:

[0005] In a first aspect, an embodiment of the present invention provides a touch substrate, comprising a touch recognition area and a routing area, wherein the touch substrate comprises a substrate and touch electrodes and touch signal lines located on the substrate, wherein the touch electrodes are arranged in the touch recognition area, and the touch electrodes are connected to a touch control chip via the touch signal lines located in the routing area;

[0006] The number of the touch signal lines is multiple groups, and each group of the touch signal lines includes a first signal line and a second signal line that are stacked;

[0007] The orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of the same group on the substrate, and at least part of the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of other groups on the substrate.

[0008] In some of these embodiments, at least part of the first signal line includes a first portion, a second portion, and a third portion;

[0009] The orthographic projection of the second signal line on the substrate covers the orthographic projection of the first part of the first signal lines of the same group on the substrate;

[0010] The orthographic projection of the second signal line on the substrate covers the orthographic projection of the second part of the first signal line of a different group on the substrate;

[0011] The third portion connects the second portion and at least a portion of the first portion.

[0012] In some embodiments, an orthographic projection of the second portion of at least some of the first signal lines on the substrate overlaps with an orthographic projection of the second signal lines of the next group along the arrangement direction of the plurality of groups of touch signal lines on the substrate.

[0013] In some embodiments, the first portion includes a first sub-portion, and the first sub-portion is connected to the second portion through the third portion.

[0014] In some embodiments, along the extension direction of the second signal line, the first sub-portions and the second portions of the first signal line are alternately arranged, and adjacent first sub-portions and second portions are connected via the third portion.

[0015] In some embodiments, the first portion of the first signal line further includes a second sub-portion, the second sub-portion is insulated from the second portion, and the second sub-portion is insulated from the first sub-portion.

[0016] In some embodiments, the second sub-portion is located between two adjacent first sub-portions of the same first signal line; or

[0017] The second sub-portion is located between two adjacent second portions of another first signal line.

[0018] In a second aspect, an embodiment of the present invention provides an electronic device, comprising any one of the above touch control substrates.

[0019] In a third aspect, an embodiment of the present invention provides a method for repairing a touch control substrate, which is applied to any of the above touch control substrates, and the method comprises the following steps:

[0020] Detect the short-circuit point between two sets of touch signal lines;

[0021] A first signal line in one group of the touch signal lines and a second signal line in the other group of the touch signal lines are cut off at both sides of the short-circuit point.

[0022] In some embodiments, the method of cutting off a first signal line in one group of touch signal lines and a second signal line in another group of touch signal lines in the two groups of touch signal lines on both sides of the short-circuit point includes:

[0023] Determine a repair point corresponding to the short-circuit point, wherein the repair point is an overlapping point of a first signal line of one group of touch signal lines and a second signal line of another group of touch signal lines, and the number of the repair points is two, and the two repair points are respectively located on both sides of the short-circuit point along the extension direction of the second signal line;

[0024] The first signal line and the second signal line located at the maintenance point are cut off.

[0025] In the embodiment of the present invention, the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of the same group on the substrate, so that at least part of the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of the other group on the substrate. In this way, if a short circuit occurs between two adjacent groups of touch signal lines, when the touch substrate is repaired, the first signal line and the second signal line of the different groups of touch signal lines can be cut off at the overlapping part of the different groups of touch signal lines, thereby avoiding cutting off the first signal line and the second signal line of the same group of signal lines at the same time. When the short circuit fault is eliminated, it is also possible to avoid the same group of touch signal lines being completely cut off, thereby ensuring signal transmission, which helps to improve the maintainability of the touch substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0027] Figure 1 is a schematic structural diagram of a touch control substrate in one embodiment of the present invention;

[0028] Figure 2 yes Figure 1 The cross-sectional view at A-A';

[0029] Figure 3 is a schematic structural diagram of a first signal line in an embodiment of the present invention;

[0030] Figure 4 FIG. 4 is a flow chart of a method for repairing a touch control substrate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The terms "first", "second" etc. in the embodiments of the present invention are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. In addition, the terms "include" and "have" and any variation thereof are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment. In addition, "and / or" is used in the present application to represent at least one of the connected objects, such as A and / or B and / or C, which represents 7 situations including single A, single B, single C, and A and B all exist, B and C all exist, A and C all exist, and A, B and C all exist.

[0033] An embodiment of the present invention provides a touch control substrate.

[0034] In one embodiment, the touch substrate includes a touch recognition area and a routing area. The touch substrate includes a substrate and touch electrodes and touch signal lines located on the substrate. The touch electrodes are arranged in the touch recognition area, and the touch electrodes are connected to the touch control chip through the touch signal lines located in the routing area.

[0035] In some embodiments, the touch substrate may be a display substrate, wherein the display substrate includes a display area (AA area) and a peripheral area, wherein the touch recognition area covers the display area, and the routing area is arranged in the peripheral area.

[0036] In some embodiments, the touch module of the touch substrate specifically includes a first electrode layer, a touch insulating layer 130 and a second electrode layer which are stacked in sequence.

[0037] The touch insulating layer 130 is used to achieve insulation between the first electrode layer and the second electrode layer. Generally speaking, one of the first electrode layer and the second electrode layer is used as a bridge key, and the other is used as a touch electrode.

[0038] In this embodiment, there are multiple groups of touch signal lines, and each group of touch signal lines is used to transmit touch signals corresponding to different touch electrodes.

[0039] like Figure 1 As shown, each group of touch signal lines includes a first signal line 110 and a second signal line 120 which are stacked.

[0040] In some embodiments, the first signal line 110 is disposed in the same layer and material as the first electrode layer, and the second signal line 120 is disposed in the same layer and material as the second electrode layer. Figure 2 As shown, the first signal line 110 and the second signal line 120 are isolated from each other by the touch insulating layer 130. It should be noted that Figure 1 and Figure 2 In order to more clearly show the relative position and stacking relationship between the first signal line 110 and the second signal line 120, only the line widths of the first signal line 110 and the second signal line 120 are shown exemplarily. During implementation, the line widths of the first signal line 110 and the second signal line 120 can be adjusted as needed. Figure 1 and Figure 2 The indicated state does not represent the actual line width relationship between the first signal line 110 and the second signal line 120 .

[0041] It should be understood that each group of touch signal lines corresponds to one touch signal. Therefore, only one of the first signal line 110 and the second signal line 120 in the same group of touch signal lines needs to be connected to realize the transmission of the touch signal.

[0042] like Figure 1 As shown, the orthographic projection of the first signal line 110 on the substrate overlaps with the orthographic projection of the second signal line 120 of the same group on the substrate, and at least part of the orthographic projection of the first signal line 110 on the substrate overlaps with the orthographic projection of the second signal line 120 of other groups on the substrate.

[0043] It can be understood that, in the technical solution of this embodiment, for the same group of touch signal lines, a portion of the first signal line 110 overlaps with the second signal line 120, a portion of the first signal line 110 does not overlap with the second signal line 120, and the first signal line 110 overlaps with the second signal line 120 of other groups. Here, the overlap refers to the overlap of the orthographic projections of the two on the substrate.

[0044] In some embodiments, the orthographic projection of the second portion 112 of at least part of the first signal line 110 on the substrate overlaps with the orthographic projection of the next group of second signal lines 120 along the arrangement direction of the multiple groups of touch signal lines on the substrate.

[0045] In some other embodiments, the overlapping manner of the first signal line 110 and the second signal line 120 can also be adjusted as needed. For example, a portion of a first signal line 110 overlaps with a second signal line 120 of a group of touch signal lines located on the left side of the first signal line 110, and a portion overlaps with a second signal line 120 of a group of touch signal lines located on the right side of the first signal line 110.

[0046] See also Figure 1 and Figure 3 In some embodiments, at least a portion of the first signal line 110 includes a first portion 111 , a second portion 112 , and a third portion 113 .

[0047] In this embodiment, the first portion 111 of the first signal line 110 refers to the portion where the first signal line 110 overlaps with the second signal line 120 of the same group, that is, the orthographic projection of the second signal line 120 on the substrate covers the orthographic projection of the first portion 111 of the first signal line 110 of the same group on the substrate.

[0048] The second portion 112 of the first signal line 110 refers to a portion overlapping with other groups of second signal lines 120 . In other words, the orthographic projection of the second signal line 120 on the substrate covers the orthographic projection of the second portion 112 of different groups of first signal lines 110 on the substrate.

[0049] The third portion 113 connects the second portion 112 and at least a portion of the first portion 111 , that is, the third portion 113 forms a connection portion connecting the first portion 111 and the second portion 112 of each first signal line 110 .

[0050] Please also see Figure 1 and Figure 3 In some embodiments, the first portion 111 includes a first sub-portion 111A, and the first sub-portion 111A is connected to the second portion 112 via a third portion 113 .

[0051] In some embodiments, along the extension direction of the second signal line 120 , the first sub-portions 111A and the second portions 112 of the first signal line 110 are alternately arranged, and adjacent first sub-portions 111A and second portions 112 are connected via the third portion 113 .

[0052] In the present embodiment, each time the first signal line 110 is extended to a certain length, that is, a second portion 112 of a certain length is set, it can also be understood as forming a maintenance point. In this way, if a short circuit problem occurs at different positions, the touch signal line can be repaired near the short circuit point 210, which helps to improve the convenience of maintenance.

[0053] In some embodiments, the first portion 111 of some first signal lines 110 further includes a second sub-portion 111B, the second sub-portion 111B is insulated from the second portion 112, and the second sub-portion 111B is insulated from the first sub-portion 111A. In some embodiments, the second sub-portion 111B is located between two adjacent first sub-portions 111A of the same first signal line 110; or the second sub-portion 111B is located between two adjacent second portions 112 of another first signal line 110.

[0054] In this embodiment, it can be understood that the second sub-portion 111B is a portion insulated from other portions of the first signal line 110 , and the second sub-portion 111B overlaps with the corresponding second signal line 120 to achieve transmission of the touch signal.

[0055] An embodiment of the present invention provides a method for repairing a touch control substrate.

[0056] like Figure 4 As shown, in some embodiments, the touch substrate repair method includes the following steps:

[0057] Step 401: Detecting a short-circuit point between two groups of touch signal lines;

[0058] Step 402: Cutting off a first signal line in one group of the touch signal lines and a second signal line in the other group of the touch signal lines at both sides of the short-circuit point.

[0059] The cutting operation of the touch signal line can be implemented by laser cutting or other methods. In this embodiment, the specific process of the cutting operation is not further limited.

[0060] It should be understood that the short circuit between the touch signal lines is generally caused by metal residues due to factors such as foreign matter residue when the touch signal lines are patterned. Generally speaking, the manufacturing process of the first signal line 110 and the second signal line 120 is similar, so near the location where the residue phenomenon occurs, the first signal line 110 and the second signal line 120 usually have a short circuit phenomenon at the same time.

[0061] In the technical solution of this embodiment, there is a certain non-overlapping area between the first signal line 110 and the second signal line 120 of the same group of signal lines. In this way, if there is a short circuit between the two groups of signal lines, the first signal line 110 of one group of touch signal lines and the second signal line 120 of another group of touch signal lines can be cut off. After the touch signal lines are cut off, one group of touch signal lines can be connected through the second signal line 120, and the other group of touch signal lines can be connected through the first signal line 110. In this way, the maintenance method of this embodiment can eliminate the short circuit fault of the touch substrate and will not affect the transmission of the touch signal. Compared with the related art, the touch substrate of this embodiment has higher maintainability.

[0062] In some embodiments, step 402 includes:

[0063] Determining a maintenance point corresponding to the short-circuit point;

[0064] The first signal line and the second signal line located at the maintenance point are cut off.

[0065] In the technical solution of this embodiment, the repair point 220 is the overlapping point of the first signal line 110 of one group of touch signal lines and the second signal line 120 of the other group of touch signal lines. The number of the repair points 220 is two, and the two repair points 220 are respectively located on both sides of the short-circuit point 210 along the extension direction of the second signal line 120.

[0066] When performing a cutting operation on the touch signal lines, the cutting depth is difficult to control, and therefore, usually all the touch signal lines at the same position are cut off.

[0067] like Figure 1 As shown, in the case where the overlapping point of a first signal line 110 and a second signal line 120 of another group of touch signal lines is used as a repair point, when a cutting operation is performed at the repair point, the first signal line 110 in one group of touch signal lines and the second signal line 120 in another group of touch signal lines can be cut off through one cutting operation, thereby being able to conveniently and quickly complete the repair operation of the short-circuited touch signal line.

[0068] It should be understood that the short circuit between the touch signal lines is generally caused by metal residues due to factors such as foreign matter residue when the touch signal lines are patterned. Generally speaking, the manufacturing process of the first signal line 110 and the second signal line 120 is similar, so near the location where the residue phenomenon occurs, the first signal line 110 and the second signal line 120 usually have a short circuit phenomenon at the same time.

[0069] An embodiment of the present invention further provides an electronic device, comprising any one of the above touch control substrates.

[0070] Since the electronic device of this embodiment includes all the technical solutions of the above-mentioned touch control substrate embodiment, it can at least achieve all the above-mentioned technical effects, which will not be described in detail here.

[0071] The above is a preferred implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A touch substrate, characterized in that: The touch substrate comprises a touch recognition area and a wiring area, wherein the touch substrate comprises a substrate and touch electrodes and touch signal lines located on the substrate, the touch electrodes are arranged in the touch recognition area, and the touch electrodes are connected to the touch control chip through the touch signal lines located in the wiring area; The number of the touch signal lines is multiple groups, and each group of the touch signal lines includes a first signal line and a second signal line that are stacked; The orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of the same group on the substrate, and at least part of the orthographic projection of the first signal line on the substrate overlaps with the orthographic projection of the second signal line of other groups on the substrate; At least part of the first signal line includes a first portion, a second portion and a third portion; The orthographic projection of the second signal line on the substrate covers the orthographic projection of the first part of the first signal lines of the same group on the substrate; The orthographic projection of the second signal line on the substrate covers the orthographic projection of the second part of the first signal line of a different group on the substrate; The third portion connects the second portion and at least a portion of the first portion; The first portion includes a first sub-portion, and the first sub-portion is connected to the second portion through the third portion; The first portion of the first signal line further includes a second sub-portion, the second sub-portion is insulated from the second portion, and the second sub-portion is insulated from the first sub-portion.

2. The touch substrate according to claim 1, wherein: The orthographic projection of the second portion of at least part of the first signal lines on the substrate overlaps with the orthographic projection of the second signal lines of the next group along the arrangement direction of the plurality of groups of touch signal lines on the substrate.

3. The touch substrate according to claim 1, wherein: Along the extending direction of the second signal line, the first sub-portions and the second portions of the first signal line are alternately arranged, and adjacent first sub-portions and second portions are connected via the third portion.

4. The touch substrate according to claim 1, wherein: The second sub-portion is located between two adjacent first sub-portions of the same first signal line; or The second sub-portion is located between two adjacent second portions of another first signal line.

5. An electronic device, characterized in that: The touch control substrate comprises the touch control substrate according to any one of claims 1 to 4.

6. A method for repairing a touch panel substrate, characterized in that: Applied to the touch control substrate according to any one of claims 1 to 4, the method comprises the following steps: Detect the short-circuit point between two sets of touch signal lines; A first signal line in one group of the touch signal lines and a second signal line in the other group of the touch signal lines are cut off at both sides of the short-circuit point.

7. The method according to claim 6, characterized in that The method of cutting off the first signal line in one group of the touch signal lines and the second signal line in the other group of the touch signal lines in the two groups of the touch signal lines on both sides of the short-circuit point comprises: Determine a repair point corresponding to the short-circuit point, wherein the repair point is an overlapping point of a first signal line of one group of touch signal lines and a second signal line of another group of touch signal lines, and the number of the repair points is two, and the two repair points are respectively located on both sides of the short-circuit point along the extension direction of the second signal line; The first signal line and the second signal line located at the maintenance point are cut off.

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