CN108762543B - Touch screen and touch device using same - Google Patents
Touch screen and touch device using same Download PDFInfo
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- CN108762543B CN108762543B CN201810356906.5A CN201810356906A CN108762543B CN 108762543 B CN108762543 B CN 108762543B CN 201810356906 A CN201810356906 A CN 201810356906A CN 108762543 B CN108762543 B CN 108762543B
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- touch
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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
-
- 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
Abstract
The invention provides a touch device and a touch screen thereof. This touch screen includes: a substrate; the touch electrode layer comprises a first touch electrode and a second touch electrode, the second touch electrode comprises a plurality of electrode blocks which are arranged at intervals in an insulating mode, and connecting lines of the electrode blocks are arranged in a staggered mode with the first touch electrode; the insulating layer is arranged on the surface of the touch electrode layer, which is far away from the substrate, and is provided with a through hole so that at least part of each electrode block is exposed; the bridging bridge is arranged on the insulating layer, is positioned between two adjacent electrode blocks, and comprises a middle part and a connecting part, and the connecting part can enable the two adjacent electrode blocks to be electrically connected; the connecting line of the center of the through hole and one point of the edge of the connecting part is a first line segment, the connection of the center of the through hole and one point of the inner wall of the through hole is a second line segment, the second line segment is overlapped with the first line segment, and the length of the first line segment is more than or equal to 1.5 times of that of the second line segment. The touch screen can ensure a good touch effect.
Description
Technical Field
The present invention relates to the field of touch technologies, and in particular, to a touch screen and a touch device using the same.
Background
The touch screen is an external input device which is more and more widely applied, input can be achieved through light touch of fingers, the man-machine interaction process is further direct, and the touch screen has the advantages of being simple, rapid, humanized and the like.
As the touch screen gradually moves toward flexible screens and curved screens, the touch screen begins to move to a single-layer conductive layer structure, such as a touch screen with a single-layer indium tin oxide (SITO) structure. A touch panel with a single conductive layer structure generally includes a substrate and a number of touch electrode layers, which is one layer and is disposed on a surface of the substrate. The common high polymer material substrate has certain elasticity relative to the glass substrate, and can lead to the substrate to stretch out and draw back, and then can make the connection between electrode block and the electrically conductive overlap joint take place the dislocation to lead to effective area of contact between electrically conductive overlap joint bridge and electrode block to reduce or even be zero, cause the overlap joint bad, influence touch-control effect.
Disclosure of Invention
A touch screen, comprising: a substrate; the touch electrode layer comprises a first touch electrode and a second touch electrode, the second touch electrode comprises a plurality of electrode blocks which are arranged at intervals in an insulating mode, and connecting lines of the electrode blocks are arranged in a staggered mode with the first touch electrode; the insulating layer is arranged on the surface, far away from the substrate, of the touch electrode layer, and is provided with a through hole so that at least part of each electrode block is exposed; the lap joint bridge is arranged on the insulating layer and positioned between two adjacent electrode blocks, the lap joint bridge comprises a middle part positioned in the middle and two connecting parts positioned at two ends, and the connecting parts are electrically connected with the electrode blocks exposed out of the through holes so as to electrically connect the two adjacent electrode blocks; the connecting line of the center of the through hole and one point of the edge of the connecting part is a first line segment, the connection of the center of the through hole and one point of the inner wall of the through hole is a second line segment, the second line segment is parallel to the first line segment, and the length of the first line segment is more than or equal to 1.5 times of that of the second line segment.
Drawings
Fig. 1 is a schematic partial structure diagram of a touch screen according to an embodiment;
FIG. 2 is a schematic cross-sectional view illustrating a touch screen according to an embodiment;
FIG. 3 is a schematic top view of a bridge according to an embodiment;
FIG. 4 is a schematic top view of another embodiment of a bridge;
FIG. 5 is a schematic structural view of a conventional bridge;
FIG. 6 is a schematic diagram of the relative positions of a conventional landing bridge and a through-hole when an offset occurs;
FIG. 7 is a schematic diagram illustrating the relative positions of the bridge and the via hole in the case of an offset.
Detailed Description
In order to facilitate understanding of the present invention, the touch screen and the display device will be described more fully with reference to the accompanying drawings. The preferred embodiments of the touch screen and the display device are shown in the attached drawings. However, the touch screen and the display device may be implemented in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the touch screen and the display device is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 2, a touch panel 10 according to an embodiment includes a substrate 100, a touch electrode layer 200, an insulating layer 300, and a bridge 400.
In this embodiment, the substrate 100 is a polymer substrate. In one embodiment, the polymer substrate may be polyethylene terephthalate, polymethyl methacrylate, polycarbonate, or the like. The polymer material substrate can bend the touch screen 10 to a certain extent, so that the touch screen can be conveniently applied to a 3D touch device in the following process.
The touch electrode layer 200 is disposed on a surface of the substrate 100, and includes a first touch electrode 210 and a second touch electrode 220. The first touch electrode 210 has a certain length and is continuously conducted; the second touch electrode 220 includes a plurality of electrode blocks 222 arranged at intervals in an insulating manner, and the connection lines of the plurality of electrode blocks 222 are arranged in a staggered manner with respect to the first touch electrode 210.
The insulating layer 300 is disposed on the surface of the touch electrode layer 200 away from the substrate 100, and the insulating layer 300 is provided with a through hole 310 to expose at least a portion of each electrode block 222. The bridge 400 is disposed on the insulating layer 300 and connects two adjacent electrode blocks 222, and the bridge 400 includes a middle portion 410 in the middle and two connecting portions 420 at both ends. The connecting portion 420 is electrically connected to the electrode blocks 222 exposed from the through holes 310, so that two adjacent electrode blocks 222 are electrically connected.
Referring to fig. 2 and 3, a connection line between the center of the through hole 310 and a point of the edge of the connection part 420 is a first line segment a1, and a connection line between the center of the through hole 310 and a point of the inner wall of the through hole 310 is a second line segment a 2. The second line segment a2 is parallel to the first line segment a1, and the length of the first line segment a1 is equal to or greater than 1.5 times the length of the second line segment a 2.
In a conventional touch screen, the length of the first line segment is less than 1.5 times the length of the second line segment. In the touch screen 10, the length of the first line segment a1 is greater than or equal to 1.5 times the length of the second line segment a2, that is, the size of the connecting portion 420 of the bridge 400 is increased, so as to avoid the decrease or even zero of the limited overlapping area between the bridge 400 and the electrode blocks 222 due to the expansion and contraction of the substrate 100, further avoid the influence on the electrical connection between the electrode blocks 222, and avoid the influence on the touch effect of the touch screen 10.
Referring to fig. 1, the first touch electrode 210 extends along a first direction 12, the plurality of electrode blocks 222 are arranged at intervals along a second direction 14, and the first direction 12 is perpendicular to the second direction 14.
In the embodiment, the connection portion 420 and the through hole 310 are both square, and the length of the first line segment a1 is greater than or equal to 1.5 times the length of the second line segment a2, that is, the side length of the connection portion 420 is greater than or equal to 1.5 times the side length of the through hole 310. More specifically, the side length of the connection portion 420 is 2 to 3 times the side length of the through hole, so that it can be ensured that the effective overlapping area is not affected by the expansion and contraction of the substrate 100. In other embodiments, the through hole 310 may also be a circular structure, and in this case, the minimum value of the side length of the connection part 420 is greater than or equal to 1.5 times the diameter of the through hole 310.
In an embodiment, referring to fig. 1 and fig. 3, a first notch 422 is formed inside the connecting portion 420 to reduce the area of the connecting portion 420. The bridge 400 is generally a metal bridge, and in this embodiment, the material of the bridge 400 is silver. The metal bridging bridge has a certain visibility to the transparent materials such as ITO, and when the size of the connecting portion 420 is increased, the size of the whole bridging bridge 400 is inevitably increased, and after the touch screen 10 and the display panel are combined to form the touch display screen, the increased bridging bridge 400 can cause adverse effects on the visual effect of the touch display screen. Therefore, in the present embodiment, the first notch 422 is formed in the connecting portion 420, so that the area of the connecting portion 420 can be reduced, and the influence of the larger-sized bridging bridge 400 structure on the visual effect of the touch display screen can be avoided.
In this embodiment, the connection portion 420 includes an effective lap area 420a and an edge connection area 420b connected to the effective lap area 420a, the effective lap area 420a is opposite to the through hole 310 and covers the through hole 310, that is, the effective lap area 410a is a projection of the through hole 310 on the connection portion 420. The effective lap joint region 420a is shown by the dashed line box in fig. 3, and the through hole 310 is located right below the effective lap joint region. The first gap 422 may be disposed only in the edge connecting region 420b, or may be opened in the edge connecting region 420b and extend to the effective overlapping region 420 a.
In an embodiment, the first notch 422 may have a cross-shaped structure, a square-shaped structure, or a combination of various forms, which is not limited herein. In an embodiment, the number of the first notches 422 is multiple, the multiple first notches 422 are arranged in an array, each row of the first notches 422 is parallel to the first direction 12, each column of the first notches 422 is parallel to the second direction 14, in the first direction 12, the length of the connecting portion 420 is greater than or equal to 1.3 times of the length of the distance between two adjacent first notches 422, and the length of the connecting portion 420 is greater than or equal to 1.3 times of the distance between the first notches 422 located at the periphery and the edge of the connecting portion 420. In this embodiment, referring to fig. 2 and fig. 3, the number of the first notches 422 is four, and the four first notches 422 are arranged in the connecting portion 420 in an array along the first direction 12 and the second direction 14. Since the size of the bridge 400 in the first direction 12 is generally about 105 μm, if the distance between the first notch 422 and the edge of the connecting portion 420 and the distance between two adjacent first notches 422 are too large, the size of the first notch 422 is very small, and thus the purpose of forming the first notch 422 cannot be achieved, that is, the influence of the structure of the bridge 400 on the visual effect of the touch display screen cannot be avoided, and therefore, the distance between the first notch 422 located at the periphery and the edge of the connecting portion 420 and the distance between two adjacent first notches 422 are set to be less than or equal to 80 μm.
In other embodiments, the number of the first notches 422 is multiple, the multiple first notches 422 are arranged in parallel at intervals along the first direction 12, each first notch 422 extends along the second direction 14, in the first direction 12, the length of the connecting portion 420 is greater than or equal to 1.3 times the length of the distance between two adjacent first notches 422, and the length of the connecting portion 420 is greater than or equal to 1.3 times the distance between the first notches 422 located at the periphery and the edge of the connecting portion 420. That is, when the length of the connection portion 420 is 105 μm in the first direction 12, the distance between two adjacent first gaps 422 is less than or equal to 80 μm, and the distance between the first gaps 422 located at the periphery and the edge of the connection portion 420 is less than or equal to 80 μm. One end of the first notch 422 away from the middle portion 410 extends through one end of the connecting portion 420 away from the middle portion 410.
In this embodiment, in order to further improve the visual effect of the touch display screen, the middle portion 410 of the bridge joint 400 is further provided with a second notch 412. The second notch 412 in this embodiment has a rectangular structure.
In one embodiment, the insulating layer 300 includes a plurality of insulating blocks 300a disposed at intervals, the number of the insulating blocks 300a is the same as the number of the landing bridges 400, and the insulating blocks 300a are in one-to-one correspondence, and are used for insulating the landing bridges 400 from the first touch electrodes 210. An insulating block 300a is disposed between each of the bridging bridges 400 and the touch electrode layer 200, and the through holes 310 are disposed at two ends of the insulating block 300a, so that the bridging bridges 400 are insulated from the first touch electrode 210 while the bridging bridges 400 are connected to the electrode blocks 222.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express a few embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch screen, comprising:
the substrate is made of high polymer materials and can be bent;
the touch electrode layer comprises a first touch electrode and a second touch electrode, the second touch electrode comprises a plurality of electrode blocks which are arranged at intervals in an insulating mode, and connecting lines of the electrode blocks are arranged in a staggered mode with the first touch electrode;
the insulating layer is arranged on the surface, far away from the substrate, of the touch electrode layer, and is provided with a through hole so that at least part of each electrode block is exposed; and
the lapping bridge is arranged on the insulating layer and is connected with the two adjacent electrode blocks, the lapping bridge comprises a middle part positioned in the middle and two connecting parts positioned at two ends, and the connecting parts are electrically connected with the electrode blocks exposed out of the through holes so as to electrically connect the two adjacent electrode blocks; the connecting line of the center of the through hole and one point of the edge of the connecting part is a first line segment, the connection of the center of the through hole and one point of the inner wall of the through hole is a second line segment, the second line segment is parallel to the first line segment, and the length of the first line segment is more than or equal to 1.5 times of that of the second line segment;
the connecting portion include effective overlap joint region and with the marginal connection region that effective overlap joint region connects, effective overlap joint region with the through-hole is just right just to cover the through-hole, a plurality of first breachs have been seted up to connecting portion inside, first breach only set up in marginal connection region or at least part set up in marginal overlap joint region and to effective overlap joint region extends.
2. The touch screen of claim 1, wherein the first notch has a cross-shaped structure or a square structure.
3. The touch screen of claim 1, wherein the first touch electrode extends along a first direction, the plurality of electrode blocks are arranged at intervals along a second direction in an insulated manner, the first direction is perpendicular to the second direction, the plurality of first notches are arranged in an array manner, each row of first notches is parallel to the first direction, each column of first notches is parallel to the second direction, the length of the connecting portion in the first direction is greater than or equal to 1.3 times of the length of the space between two adjacent first notches, and the length of the connecting portion is greater than or equal to 1.3 times of the distance between the first notch located on the periphery and the edge of the connecting portion.
4. The touch screen of claim 1, wherein the first touch electrode extends along a first direction, the plurality of electrode blocks are arranged at intervals in an insulating manner along a second direction, the first direction is perpendicular to the second direction, the plurality of first notches are arranged at intervals in parallel along the first direction, each first notch extends along the second direction, the length of the connecting portion in the first direction is greater than or equal to 1.3 times of the length of the space between two adjacent first notches, and the length of the connecting portion is greater than or equal to 1.3 times of the distance between the first notch located on the periphery and the edge of the connecting portion.
5. The touch screen of claim 4, wherein an end of the first notch distal from the middle portion extends to an end of the connecting portion distal from the middle portion.
6. The touch screen of any one of claims 4-5, wherein in the first direction, the length of the connecting portion is greater than the length of the middle portion, and the middle portion is provided with a second notch.
7. The touch screen of claim 6, wherein the second notch has a rectangular structure.
8. The touch screen of claim 6, wherein the first touch electrode has a certain length and is continuously conductive.
9. The touch screen of claim 1, wherein the insulating layer comprises a plurality of insulating blocks arranged at intervals, two ends of each insulating block are respectively overlapped with two adjacent electrode blocks, the through holes are respectively formed in two ends of each insulating block, the number of the insulating blocks is the same as that of the bridging bridges, and each bridging bridge is arranged on the surface, far away from the substrate, of one insulating block.
10. A touch device comprising the touch screen according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356906.5A CN108762543B (en) | 2018-04-19 | 2018-04-19 | Touch screen and touch device using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356906.5A CN108762543B (en) | 2018-04-19 | 2018-04-19 | Touch screen and touch device using same |
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| Publication Number | Publication Date |
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| CN108762543A CN108762543A (en) | 2018-11-06 |
| CN108762543B true CN108762543B (en) | 2021-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112416156A (en) * | 2019-08-23 | 2021-02-26 | 陕西坤同半导体科技有限公司 | Touch display panel and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120075982A (en) * | 2010-12-29 | 2012-07-09 | 하이디스 테크놀로지 주식회사 | Capacitance touch panel and the method thereof |
| CN202838249U (en) * | 2012-07-24 | 2013-03-27 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN105786237A (en) * | 2015-01-09 | 2016-07-20 | 三星显示有限公司 | Flexible touch panel and flexible display device |
| CN107272935A (en) * | 2016-03-31 | 2017-10-20 | 东友精细化工有限公司 | Touch sensor |
| CN107577375A (en) * | 2017-10-24 | 2018-01-12 | 业成科技（成都）有限公司 | Touch-screen and its manufacture method |
-
2018
- 2018-04-19 CN CN201810356906.5A patent/CN108762543B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120075982A (en) * | 2010-12-29 | 2012-07-09 | 하이디스 테크놀로지 주식회사 | Capacitance touch panel and the method thereof |
| CN202838249U (en) * | 2012-07-24 | 2013-03-27 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN105786237A (en) * | 2015-01-09 | 2016-07-20 | 三星显示有限公司 | Flexible touch panel and flexible display device |
| CN107272935A (en) * | 2016-03-31 | 2017-10-20 | 东友精细化工有限公司 | Touch sensor |
| CN107577375A (en) * | 2017-10-24 | 2018-01-12 | 业成科技（成都）有限公司 | Touch-screen and its manufacture method |
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| CN108762543A (en) | 2018-11-06 |
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