CN108287630B - Touch substrate, preparation method thereof and display device - Google Patents
Touch substrate, preparation method thereof and display device Download PDFInfo
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- CN108287630B CN108287630B CN201810005899.4A CN201810005899A CN108287630B CN 108287630 B CN108287630 B CN 108287630B CN 201810005899 A CN201810005899 A CN 201810005899A CN 108287630 B CN108287630 B CN 108287630B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention provides a touch substrate, a preparation method thereof and a display device, belongs to the technical field of touch, and can solve the problem that bridge points in a flexible touch substrate with a conventional bridging structure are easy to break or fall off due to bending. The touch substrate comprises a substrate, a plurality of rows of first electrode blocks and a plurality of columns of second electrode blocks, wherein the first electrode blocks and the second electrode blocks are arranged on the substrate; the first electrode blocks positioned in the same row are connected by a first connecting part; any two adjacent second electrode blocks in the second electrode blocks positioned in the same column are connected through a second connecting part; the first connecting part and the second connecting part are arranged in a crossed manner, and an insulating layer is arranged between the first connecting part and the second connecting part; the touch substrate is divided into a bending area and a fixed area along the row direction; the first connecting part and the first electrode block connected with the first connecting part are of an integrated structure; the first connecting portions in the fixing region are connected to the corresponding first electrode blocks through via holes penetrating the insulating layer.
Description
Technical Field
The invention belongs to the technical field of touch control, and particularly relates to a touch control substrate, a preparation method of the touch control substrate and a display device.
Background
At present, the flexible touch screen is mainly applied to smart phones. In the prior art, a bending region is usually designed in an edge region in a long side direction of a mobile phone screen, so that the mobile phone screen can be bent upwards or downwards, and the flexible and bendable characteristic of the mobile phone screen is embodied.
For the flexible touch screen with the bridging structure, because the channel resistance in the bridging direction is large, the bridging direction is usually designed in the short side direction in the prior art, so that the channel resistance is reduced, and the uniformity of the whole channel resistance of the product is improved. However, this design makes the bridging direction perpendicular to the bending direction, so that the bridge points are easily broken or dropped off due to bending in the bending region.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a touch substrate in which a connection portion between electrode blocks on the touch substrate is not easily broken.
The technical scheme adopted for solving the technical problem is that the touch substrate comprises a substrate, a plurality of rows of first electrode blocks and a plurality of columns of second electrode blocks, wherein the first electrode blocks and the second electrode blocks are arranged on the substrate; the first electrode blocks are positioned in the same row, and any two adjacent first electrode blocks are connected through a first connecting part; any two adjacent second electrode blocks in the same column are connected through a second connecting part; the first connecting part and the second connecting part are arranged in a crossed mode, and an insulating layer is arranged between the first connecting part and the second connecting part;
the touch substrate is divided into a bending area and a fixed area along the row direction; wherein the content of the first and second substances,
the first connecting part and the first electrode block connected with the first connecting part are of an integral structure; the first connecting portions in the fixing regions are connected with the corresponding first electrode blocks through via holes penetrating through the insulating layers.
Preferably, the bending region includes two sub-bending regions, and the two sub-bending regions are respectively disposed in an edge region of the touch substrate.
Preferably, the second connection portion located at the bending region has a curved shape.
Preferably, the first connecting portion at least in the middle region of the fixing region has a curved shape.
Preferably, the first electrode block and the second electrode block are arranged in the same layer and made of the same material.
Preferably, the first electrode block, the second electrode block and the second connecting portion located in the fixing region are arranged in the same layer and made of the same material.
Further preferably, the second connecting portion located in the bending region and the first connecting portion located in the fixing region are arranged on the same layer and are made of the same material.
Preferably, the number of the second connecting parts located in the bending region and used for connecting two adjacent second electrode blocks is multiple.
Another technical solution adopted to solve the technical problem of the present invention is a method for manufacturing a touch substrate, including: forming a plurality of rows of first electrode blocks and a plurality of columns of second electrode blocks on a substrate; the first connecting parts are used for connecting two adjacent first electrode blocks in the first electrode blocks positioned on the same row, and the second connecting parts are used for connecting two adjacent second electrode blocks in the second electrode blocks positioned on the same column; wherein the first connecting part and the second connecting part are arranged in a crossed manner, and an insulating layer is formed between the first connecting part and the second connecting part,
the touch substrate is divided into a bending area and a fixed area along the row direction; wherein the content of the first and second substances,
the first connecting part and the first electrode block which are positioned at the bending area are prepared by adopting a one-time composition process; the first connecting portions in the fixing regions are connected with the corresponding first electrode blocks through via holes penetrating through the insulating layers.
Another technical solution to solve the technical problem of the present invention is a display device including any one of the touch substrates described above.
In the touch substrate, the first connecting part and the first electrode block in the bending area are of an integral structure, and the second connecting part is connected with the corresponding second electrode block through the via hole penetrating through the insulating layer, so that the arrangement direction of the second connecting part is the same as that of the bending area 11, and further, when the bending area 11 is bent, the second connecting part is not easy to break or fall off due to bending stress, and the first connecting part and the first electrode block 21 are of an integral structure and are not easy to break. Therefore, compared with the prior art, the flexibility and the reliability of the touch substrate provided by the embodiment are improved.
Drawings
Fig. 1 is a schematic structural diagram of a touch substrate according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of another touch substrate according to an embodiment of the invention;
fig. 3 is a flowchart of a method for manufacturing a touch substrate according to an embodiment of the invention;
wherein the reference numerals are: 1. a substrate; 11. a bending zone; 12. a fixed zone; 21. a first electrode block; 22. a first connection portion; 31. a second electrode block; 32. a second connecting portion.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the present embodiment provides a touch substrate, which includes a substrate 1, and a plurality of rows of first electrode blocks 21 and a plurality of columns of second electrode blocks 31 disposed on the substrate 1; wherein, in the first electrode blocks 21 in the same row, any two adjacent first electrode blocks 21 are connected by the first connecting part 22; any two adjacent second electrode blocks 31 in the same column are connected by a second connecting part 32; the first connection portion 22 and the second connection portion 32 are arranged in a crossing manner, and an insulating layer is arranged between the two layers.
Specifically, in this embodiment, the row direction is taken as a transverse direction, and the column direction is taken as a longitudinal direction for example. Namely, the plurality of first electrode blocks 21 arranged transversely in each row are transversely connected by the first connecting parts 22, and the plurality of second electrode blocks 31 arranged longitudinally in each column are longitudinally connected by the second connecting parts 32.
Particularly, in the present embodiment, the touch substrate is divided into a bending area 11 and a fixing area 12 along the row direction; the first connecting part 22 located at the bending region 11 and the first electrode block 21 connected with the first connecting part are of an integral structure; the first connection portions 22 located in the fixed region 12 are connected to the respective first electrode blocks 21 through via holes penetrating the insulating layers.
The bending region 11 of the touch substrate can be bent upward or downward (the upper and lower directions are relative to the position of the substrate 1). In this embodiment, as shown in fig. 1, the bending region 11 and the fixing region 12 of the touch substrate are arranged along a row direction (vertical direction in fig. 1). Specifically, the bending region 11 may be located in an edge region, a central region, or the like of the touch substrate. Preferably, the bending region 11 includes two sub-bending regions 11, and the two sub-bending regions 11 respectively correspond to two opposite positions of the edge region of the touch substrate (i.e. positions of the left and right edge regions of the touch substrate in fig. 1), that is, two sides of the touch substrate in the vertical direction may be bent upward or downward.
Specifically, in the bending region 11, the first connection portion 22 and the connected first electrode block 21 are disposed on the same layer and are of an integral structure; the second connection portions 32 are connected to the corresponding second electrode blocks 31 through via holes penetrating the insulating layers, thereby connecting the longitudinally adjacent second electrode blocks 31. That is, in the bending region 11, the first connecting portion 22 is connected to the first electrode block 21 in the transverse direction, and the second connecting portion 32 is connected to the second electrode block 31 in the longitudinal direction, i.e., the second connecting portion 32 is disposed in the same direction as the bending region 11. Therefore, in the present embodiment, when the bending region 11 of the touch substrate is bent, the second connecting portion 32 is not easily broken or dropped due to bending stress because the bending direction of the second connecting portion is the same as the setting direction of the second connecting portion; the first connecting portion 22 is integrated with the first electrode block 21, so that the force is relatively uniform, and the installation direction is perpendicular to the bending direction. But also are not susceptible to cracking.
In the fixed area 12, the first connection portions 22 are connected to the corresponding first electrode blocks 21 through via holes penetrating the insulating layer; the second connecting portion 32 and the second electrode block 31 are disposed on the same layer and are of an integral structure. This is so arranged because: when the connection portion (the first connection portion 22 or the second connection portion 32) is connected to the electrode block through the via hole penetrating the insulating layer, the channel resistance thereof is larger than that of the connection portion integrally configured with the electrode block (the first electrode block 21 or the second electrode block 31). The shape of the touch substrate is generally rectangular, and the bending region 11 is generally located in the long side direction of the touch substrate, that is, as shown in fig. 1, the short side of the touch substrate is in the horizontal direction, and the long side of the touch substrate is in the vertical direction, that is, the number of the first electrode blocks 21 connected in the transverse direction is smaller than the number of the second electrode blocks 31 connected in the longitudinal direction. Therefore, in this embodiment, the first connection portions 22 in the fixed region 12 are preferably connected to the corresponding first electrode blocks 21 through via holes penetrating through the insulating layer, so as to reduce the influence on the channel resistance as much as possible and further ensure the uniformity of the channel resistance of the entire touch substrate.
Preferably, the second connecting portion 32 located at the bending region 11 has a curved shape. That is, as shown in fig. 2, at least the longitudinal side of the second connecting portion 32 of the bending region 11 is curved. Specifically, the shape of the second connection portion 32 may be a sine wave, an S shape, or the like. In this embodiment, the second connection portion 32 is designed to be curved, so that the second connection portion 32 is not easily broken or dropped when the touch substrate is bent.
In the prior art, the touch substrate may need to be folded in half in the longitudinal direction during product testing, that is, the bending occurs in the middle area between the bending area 11 and the fixing area 12. Therefore, in this embodiment, it is preferable that the first connecting portion 22 at least located in the middle region of the fixing region 12 is curved, so as to avoid the first connecting portion 22 from breaking or falling off during product testing.
Preferably, a plurality of second connecting portions 32 (not shown) are located in the bending region 11 for connecting two adjacent second electrode blocks 31. That is, in the bending region 11, two adjacent second electrode blocks 31 are connected by a plurality of second connecting portions 32, and although the second connecting portions 32 in this embodiment are not easy to break or fall off, there is still a certain risk, so that the connection of the adjacent second electrode blocks 31 is ensured by providing a plurality of second connecting portions 32 in this embodiment.
It is understood that, in the present embodiment, the first electrode block 21 and the second electrode block 31 may be a touch electrode block or a sensing electrode block, respectively, and are not limited in particular.
Example 2:
as shown in fig. 1 and 2, the present embodiment provides a touch substrate, which includes a first electrode block 21 and a second electrode block 31 on a substrate 1; wherein the first electrode blocks 21 in the same row are connected through the first connecting part 22, and the second electrode blocks 31 in the same column are connected through the second connecting part 32; and the first connection portion 22 and the second connection portion 32 are crossed and insulated.
Specifically, the first electrode block 21, the second electrode block 31, the first connecting portion 22 located in the bending region 11, and the second connecting portion 32 located in the fixing region 12 of the touch substrate are located in the same layer, and the materials are the same, and these four electrodes can be formed by adopting a one-time composition process; arranging insulating layers on the layers of the first electrode block 21, the second electrode block 31, the first connecting part 22 positioned in the bending area 11 and the second connecting part 32 positioned in the fixing area 12; the second connection portion 32 located in the bending region 11 and the first connection portion 22 located in the fixed region 12 are disposed above the insulating layer, and the two portions are disposed on the same layer and have the same material, meanwhile, the second connection portion 32 located in the bending region 11 is connected to the corresponding second electrode block 31 through a via hole penetrating through the insulating layer, and the first connection portion 22 located in the fixed region 12 is connected to the corresponding first electrode block 21 through a via hole penetrating through the insulating layer.
The second connection portion 32 located in the bending region 11 is of a bending structure, such as an S-shape, a broken line shape, a wave shape, and the like, so that when a force is applied to the touch substrate to bend the touch substrate in the bending region 11, a direction of the force applied to the second connection portion 32 and a direction of the force applied to the touch substrate are not on the same straight line, that is, a stress applied to the bent second connection portion 32 is reduced, thereby preventing the second connection portion 32 from being broken due to the force applied when the touch substrate is bent. Of course, the first connecting portion 22 located in the fixing region 12 may be configured to have the same shape as the first connecting portion 22 located in the bending region 11. In particular, the first connection portion 22 in the middle region of the fixed region 12 is configured to have a bending structure, so that the first connection portion 22 in the middle region of the fixed region 12 can be prevented from being broken due to bending of the touch substrate during testing.
In this embodiment, the first connecting portion 22 in the bending region 11 is designed to be integrated with the first electrode block 21, and the second connecting portion 32 is connected to the corresponding second electrode block 31 through the via hole penetrating through the insulating layer, so that the setting direction of the second connecting portion 32 is the same as the setting direction of the bending region 11, and further when the bending region 11 is bent, the second connecting portion 32 is not easily broken or dropped due to bending stress, and the first connecting portion 22 is also not easily broken due to the integrated structure with the first electrode block 21. Therefore, compared with the prior art, the flexibility and the reliability of the touch substrate provided by the embodiment are improved.
Example 3:
as shown in fig. 1 to 3, the present embodiment provides a method for preparing a touch substrate, which can prepare the touch substrate of embodiment 1 or 2, and includes: forming a plurality of rows of first electrode blocks 21 and a plurality of columns of second electrode blocks 31 on the substrate 1; the first connecting part 22 is used for connecting two adjacent first electrode blocks 21 in the same row, and the second connecting part 32 is used for connecting two adjacent second electrode blocks 31 in the same column; the first connecting portion 22 and the second connecting portion 32 are arranged in a crossed manner, and an insulating layer is formed between the two layers.
Particularly, in this embodiment, the touch substrate is divided into a bending area 11 and a fixing area 12 along a row direction; wherein, the first connecting part 22 and the first electrode block 21 at the bending region 11 are prepared by adopting a one-time composition process; the first connection portions 22 located in the fixed region 12 are connected to the respective first electrode blocks 21 through via holes penetrating the insulating layers.
The first electrode block 21, the second electrode block 31, the first connecting part 22 positioned in the bending area 11 and the second connecting part 32 positioned in the fixing area 12 are positioned on the same layer; the second connection portion 32 located in the bending region 11 and the first connection portion 22 located in the fixing region 12 are located on the same layer as an example, and a method for manufacturing a touch substrate in this embodiment is described.
Step one, depositing a transparent conductive layer on a substrate 1, and forming a pattern including a first electrode block 21, a second electrode block 31, a first connecting portion 22 located in a bending region 11, and a second connecting portion 32 located in a fixing region 12 through a one-time patterning process.
Step two, forming an insulating layer on the substrate 1 after the step is finished, and etching the insulating layer to form a via hole which is positioned in the bending area 11 and connects the second connecting part 32 with the second electrode; a via hole at the fixed area 12 connecting the first connection portion 22 with the first electrode.
Step three, forming a metal layer on the substrate 1 after the step is finished, and forming the metal layer by a one-time composition process; the second connecting part 32 positioned in the bending area 11 and the first connecting part 22 positioned in the fixing area 12; the second connecting portion 32 is connected to two second electrode blocks 31 adjacent in the longitudinal direction, and the first connecting portion 22 is connected to two first electrode blocks 21 adjacent in the transverse direction.
Preferably, the second connection portion 32 located in the bending region 11 is of a bending structure, such as an S-shape, a broken line shape, a wave shape, and the like, so that when a force is applied to the touch substrate to bend the touch substrate in the bending region 11, a direction of the force applied to the second connection portion 32 is not in the same straight line as a direction of the force applied to the touch substrate, that is, a stress applied to the bent second connection portion 32 is reduced, thereby preventing the second connection portion 32 from being broken due to the force applied when the touch substrate is bent. Of course, the first connecting portion 22 located in the fixing region 12 may be configured to have the same shape as the first connecting portion 22 located in the bending region 11. In particular, the first connection portion 22 in the middle region of the fixed region 12 is configured to have a bending structure, so that the first connection portion 22 in the middle region of the fixed region 12 can be prevented from being broken due to bending of the touch substrate during testing.
Thus, the touch substrate is prepared.
In the touch substrate manufactured by the manufacturing method provided by this embodiment, the first connection portion 22 and the first electrode block 21 in the bending region 11 are integrated, and the second connection portion 32 is connected to the corresponding second electrode block 31 through the via hole penetrating through the insulating layer, so that the setting direction of the second connection portion 32 is the same as the setting direction of the bending region 11, and further, when the bending region 11 is bent, the second connection portion 32 is not easily broken or dropped due to bending stress, and the first connection portion 22 is also not easily broken due to the integrated structure with the first electrode block 21.
Example 4:
the present embodiment provides a display device, which includes the touch substrate provided in embodiment 1 or 2.
The display device may be a liquid crystal display device, such as any product or component with a display function, such as a liquid crystal panel, electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
In this embodiment, the first connecting portion in the bending region is designed to be integrated with the first electrode block, and the second connecting portion is connected with the corresponding second electrode block through the via hole penetrating through the insulating layer, so that the setting direction of the second connecting portion is the same as the setting direction of the bending region, and further when the bending region is bent, the second connecting portion is not easily broken or dropped due to bending stress, and the first connecting portion is also not easily broken due to the integrated structure with the first electrode block. Therefore, compared with the prior art, the display device provided by the embodiment has improved flexibility and reliability.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A touch substrate comprises a substrate, a plurality of rows of first electrode blocks and a plurality of columns of second electrode blocks, wherein the first electrode blocks and the second electrode blocks are arranged on the substrate; the first electrode blocks are positioned in the same row, and any two adjacent first electrode blocks are connected through a first connecting part; any two adjacent second electrode blocks in the same column are connected through a second connecting part; the first connecting part and the second connecting part are arranged in a crossed mode, and an insulating layer is arranged between the first connecting part and the second connecting part; it is characterized in that the preparation method is characterized in that,
the touch substrate is divided into a bending area and a fixed area along the row direction, and the area of the touch substrate except the bending area is the fixed area; wherein the content of the first and second substances,
the first connecting part and the first electrode block connected with the first connecting part are of an integral structure; the first connecting portions in the fixing regions are connected with the corresponding first electrode blocks through via holes penetrating through the insulating layers.
2. The touch substrate of claim 1,
the bending area comprises two sub-bending areas, and the two sub-bending areas are respectively arranged in the edge area of the touch substrate.
3. The touch substrate of claim 1,
the second connecting part located in the bending area is bent.
4. The touch substrate of claim 1,
the first connection portion at least in the middle region of the fixing region is curved in shape.
5. The touch substrate of any one of claims 1 to 4, wherein the first electrode block and the second electrode block are disposed on the same layer and are made of the same material.
6. The touch substrate of any one of claims 1 to 4, wherein the first electrode block, the second electrode block, and the second connecting portion in the fixed region are disposed in the same layer and have the same material.
7. The touch substrate of claim 6, wherein the second connecting portion located in the bending region and the first connecting portion located in the fixing region are disposed on the same layer and have the same material.
8. The touch substrate of claim 1,
the second connecting parts which are positioned in the bending areas and are used for connecting two adjacent second electrode blocks are multiple.
9. A preparation method of a touch substrate comprises the following steps: forming a plurality of rows of first electrode blocks and a plurality of columns of second electrode blocks on a substrate; the first connecting parts are used for connecting two adjacent first electrode blocks in the first electrode blocks positioned on the same row, and the second connecting parts are used for connecting two adjacent second electrode blocks in the second electrode blocks positioned on the same column; wherein the first connecting part and the second connecting part are arranged in a crossed manner, and an insulating layer is formed between the first connecting part and the second connecting part,
the touch substrate is divided into a bending area and a fixed area along the row direction; wherein the content of the first and second substances,
the first connecting part and the first electrode block which are positioned at the bending area are prepared by adopting a one-time composition process; the first connecting portions in the fixing regions are connected with the corresponding first electrode blocks through via holes penetrating through the insulating layers.
10. A display device comprising the touch substrate according to any one of claims 1 to 8.
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| CN201810005899.4A CN108287630B (en) | 2018-01-03 | 2018-01-03 | Touch substrate, preparation method thereof and display device |
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| CN201810005899.4A CN108287630B (en) | 2018-01-03 | 2018-01-03 | Touch substrate, preparation method thereof and display device |
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| CN108287630B true CN108287630B (en) | 2021-03-02 |
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| CN106547407A (en) * | 2016-11-08 | 2017-03-29 | 武汉华星光电技术有限公司 | Bent flexible touch screen and flexible touch display screen |
| CN107239162A (en) * | 2016-03-29 | 2017-10-10 | 东友精细化工有限公司 | Touch sensor and preparation method thereof |
| CN107450772A (en) * | 2017-07-19 | 2017-12-08 | 武汉天马微电子有限公司 | Flexible touch sensor and flexible touch display device |
| CN107479754A (en) * | 2017-08-22 | 2017-12-15 | 武汉天马微电子有限公司 | A kind of flexible touch sensor and flexible touch display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106030451B (en) * | 2014-02-28 | 2021-03-12 | 株式会社半导体能源研究所 | Electronic device |
| KR102339300B1 (en) * | 2015-04-06 | 2021-12-15 | 삼성디스플레이 주식회사 | Flexible touch screen panel and flexible touch screen display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107239162A (en) * | 2016-03-29 | 2017-10-10 | 东友精细化工有限公司 | Touch sensor and preparation method thereof |
| CN106547407A (en) * | 2016-11-08 | 2017-03-29 | 武汉华星光电技术有限公司 | Bent flexible touch screen and flexible touch display screen |
| CN107450772A (en) * | 2017-07-19 | 2017-12-08 | 武汉天马微电子有限公司 | Flexible touch sensor and flexible touch display device |
| CN107479754A (en) * | 2017-08-22 | 2017-12-15 | 武汉天马微电子有限公司 | A kind of flexible touch sensor and flexible touch display panel |
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