CN108803938B - Metal grid touch panel and intelligent terminal - Google Patents
Metal grid touch panel and intelligent terminal Download PDFInfo
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- CN108803938B CN108803938B CN201810807249.1A CN201810807249A CN108803938B CN 108803938 B CN108803938 B CN 108803938B CN 201810807249 A CN201810807249 A CN 201810807249A CN 108803938 B CN108803938 B CN 108803938B
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- effective channel
- channel region
- touch panel
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- metal mesh
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 91
- 239000002184 metal Substances 0.000 title claims abstract description 91
- 108091006146 Channels Proteins 0.000 claims abstract description 106
- 239000000758 substrate Substances 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a metal grid touch panel and an intelligent terminal, wherein the touch panel comprises: a substrate; a first metal mesh layer disposed on the substrate and including a first active channel region and a first inactive channel region; a first insulating layer completely covering the first effective channel region of the first metal mesh layer, and partially covering or completely uncovering the first non-effective channel region of the first metal mesh layer; and the second metal grid layer is arranged on the first insulating layer, is overlapped with the first metal grid layer and comprises a second effective channel area, wherein at least part of the first non-effective channel area which does not cover the first insulating layer is partially or completely overlapped with the second effective channel area. Through the mode, the production cost can be reduced, and the product quality is improved.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a metal grid touch panel and an intelligent terminal.
Background
With the continuous development of science and technology, touch technology has been integrated into various aspects of life, especially in the field of intelligent terminals such as mobile phones, computers, televisions and the like which are used by people every day. With the increasing demand of people for display effect, large-size touch technology becomes a research hotspot.
In the prior art, a large-sized touch panel has a serious RC delay due to a large impedance of a conductive channel, and in order to obtain a good touch effect, an IC with a strong coverage capability needs to be used, which is not only high in cost, but also unstable in product quality.
In a long-term research and development process, the inventor finds that the existing metal grid touch panel is high in production cost and unreliable in product quality.
Disclosure of Invention
The invention mainly solves the technical problem of providing a metal grid touch panel and an intelligent terminal, which can reduce the production cost and improve the product quality.
In order to solve the technical problems, the invention adopts a technical scheme that: a metal mesh touch panel is provided.
Wherein, this touch panel includes:
a substrate;
a first metal mesh layer disposed on the substrate and including a first active channel region and a first inactive channel region;
a first insulating layer completely covering the first effective channel region of the first metal mesh layer, and partially covering or completely uncovering the first non-effective channel region of the first metal mesh layer;
and the second metal grid layer is arranged on the first insulating layer, is overlapped with the first metal grid layer and comprises a second effective channel area, wherein at least part of the first non-effective channel area which does not cover the first insulating layer is partially or completely overlapped with the second effective channel area.
In order to solve the technical problem, the invention adopts another technical scheme that: an intelligent terminal is provided.
The intelligent terminal comprises any touch panel.
The invention has the beneficial effects that: different from the prior art, since the first insulating layer disposed between the first metal mesh layer and the second metal mesh layer partially or completely covers the first inactive channel region of the first metal mesh layer, the second active channel region partially or completely overlaps the first inactive channel region not covered by the first insulating layer, so that the second active channel region and the first inactive channel region not covered by the first insulating layer are overlapped, the metal thickness of the second active channel region is increased, the impedance of the second active channel is reduced, the coverage pressure of the IC can be reduced, the cost of the IC in the product is reduced, and the reliability of the product quality is further ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of a metal mesh touch panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a first state in a manufacturing process of a metal mesh touch panel according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a second state in a manufacturing process of a metal mesh touch panel according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a third state in a manufacturing process of a metal mesh touch panel according to the present invention;
fig. 5 is a schematic structural diagram of a fourth state in an embodiment of a manufacturing process of a metal mesh touch panel according to the present invention;
fig. 6 is a schematic structural diagram of an embodiment of an intelligent terminal according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5 together, fig. 1 is a schematic structural diagram of an embodiment of a metal grid touch panel, and fig. 2-5 are schematic structural diagrams of an embodiment of a metal grid touch panel in different states during a manufacturing process of the metal grid touch panel according to the present invention, respectively, the touch panel including:
a substrate 100; a first metal mesh layer 200 disposed on the substrate 100 and including a first active channel region 210 and a first inactive channel region 220; a first insulating layer 300 completely covering the first effective channel region 210 of the first metal mesh layer 200, and partially covering or completely uncovering the first non-effective channel region 220 of the first metal mesh layer 200; a second metal mesh layer 400 disposed on the first insulating layer 300 and overlapping the first metal mesh layer 200, which includes a second effective channel region 410, wherein the second effective channel region 410 partially or completely overlaps the first non-effective channel region 220 not covered by the first insulating layer 300.
In this embodiment, since the first insulating layer 300 disposed between the first metal mesh layer 200 and the second metal mesh layer 400 partially covers or completely uncovers the first non-effective channel region 220 of the first metal mesh layer 200, so that the second effective channel region 410 and the first non-effective channel region 220 that does not cover the first insulating layer 300 are partially or completely overlapped, and thus, the second effective channel region 410 and the first non-effective channel region 220 that does not cover the first insulating layer 300 are overlapped, the metal thickness of the second effective channel region 410 is increased, the impedance of the second effective channel region 410 is reduced, the coverage pressure of the IC can be reduced, the cost of the IC in the product is reduced, and the reliability of the product quality is further ensured.
In one embodiment, the first active channel region 210 is disposed in a first direction and the second active channel region 410 is disposed in a second direction, the first direction being perpendicular to the second solar direction. The number of the first effective channel regions 210 may be one or more, and in one embodiment, the number of the first effective channel regions 210 is multiple and is uniformly distributed on the first metal mesh layer 200. Further, the second metal mesh layer 400 further includes a second non-effective channel region 420, the number of the second effective channel regions 410 may be one or more, and in one embodiment, the number of the second effective channel regions 410 is multiple and is uniformly distributed on the substrate.
Furthermore, the first insulating layer 300 covers the first effective channel region 210, so that the amount of raw materials for preparing the first insulating layer 300 can be reduced, which is beneficial to reducing the cost. More importantly, the first insulating layer 300 only covers the first effective channel region 210, so that the area of the first non-effective channel region 220 not covered by the first insulating layer 300 is increased, the contact area between the second effective channel region 410 and the first non-effective channel region 220 not covered by the first insulating layer 300 can be increased, and the resistance of the second effective channel region 410 is further reduced, thereby reducing the production cost and improving the product quality.
In one embodiment, the first active via area 210 includes a first conductive pattern trace and a first active via peripheral trace; the second effective channel region 410 includes a second conductive pattern trace and a second effective channel peripheral trace; the first inactive channel area 220 includes a first dummy trace; the second inactive channel region 420 includes a second dummy trace; the first dummy trace is at least partially overlapped with the second conductive pattern trace which is not covered by the first insulating layer. The first effective channel area 210 and the second effective channel area 410 are used for receiving and transmitting touch signals, respectively. The first dummy trace and the second dummy trace are chopped metal traces for adjusting capacitance. The first active via area 210 and the second active via area 410 are both continuous metal traces. In this embodiment, the second conductive pattern traces and the second channel peripheral traces of the second effective channel region 410 overlap with the first dummy traces of the first non-effective channel region 220, which are not covered by the first insulating layer 300, so that the metal layer of the first effective channel region 210 becomes thicker, the corresponding resistance value is reduced, the RC delay phenomenon is weakened, the IC coverage pressure can be reduced, the IC cost in the product is reduced, and the reliability of the product quality is more ensured.
Further, the touch panel further includes: a second insulating layer 500, the second insulating layer 500 completely covering the second metal mesh layer 400. The second insulating layer 500 covering the second metal mesh layer 400 not only can avoid the short circuit problem caused by the contact with the second metal mesh layer 400 and other structures, but also is convenient for the production and processing of the touch panel.
In one embodiment, the first effective channel area 210 and the second effective channel area 410 extend along the long side direction of the touch panel and the short side direction of the touch panel, respectively. The first effective channel region 210 comprises one or more of a straight line shape, a curved line shape, or a broken line shape; the second active channel region 410 includes one or more of a straight line shape, a curved line shape, or a dog-leg shape. The first active channel region 210 and the second active channel region 410 may be the same or different in shape. In one embodiment, the first effective channel region 210 and the second effective channel region 410 have the same shape and are rectangular, which facilitates improving the production efficiency and reducing the production cost. Of course, the shapes of the first effective channel area 210 and the second effective channel area 410 can be designed into different shapes according to actual needs, such as the needs of touch effect, as long as the shapes of the first effective channel area 210 and the second effective channel area 410 are symmetrical.
In one embodiment, the metal constituting the first metal mesh layer 200 is a flexible metal, which is aluminum or copper; the metal constituting the second metal mesh layer 400 is a flexible metal, which is aluminum or copper. The aluminum or copper is not only ductile and easy to process, but also has low resistivity, which is convenient to further reduce the resistance of the first effective channel region 210 and the second effective channel region 410, and obtain better touch effect. Further, the first metal mesh layer 200 and the second metal mesh layer 400 have the same or different thickness. In one embodiment, the first metallic mesh layer 200 is the same thickness as the second metallic mesh layer 400. Further, the first conductive pattern trace line width is 3-6 microns, such as 3 microns, 4 microns, 5 microns or 6 microns; the first conductive pattern trace pitch is greater than 20 microns, such as 20 microns, 30 microns, 50 microns, 70 microns, or the like; the second conductive pattern trace line width is 3-6 microns, e.g., 3 microns, 4 microns, 5 microns, or 6 microns; the second conductive pattern trace pitch is greater than 20 microns, such as 20 microns, 30 microns, 50 microns, or 70 microns. In one embodiment, the first conductive pattern trace line width is the same as the second conductive pattern trace line width; the first conductive pattern trace pitch is the same as the second conductive pattern trace pitch.
In one embodiment, the substrate 100 is a flexible substrate. The metal grid touch panel can be a flexible touch panel or a rigid touch panel. Of course, whether the metal mesh touch panel is a rigid touch panel or a flexible touch panel is determined by the material of the substrate 100. In the process of manufacturing a flexible touch panel, the substrate 100 is a flexible substrate, and further, the flexible substrate is a flexible material such as a piezoelectric film. In the process of manufacturing a rigid touch panel, the substrate 100 is a rigid substrate, and further, the rigid substrate is a rigid material such as glass.
In one embodiment, the size of the touch panel is greater than 27 inches. Such as 27 inches, 65 inches, 88 inches, etc. With the continuous development of touch panel technology, the application field thereof is gradually expanded. Especially in the fields of home entertainment, medical equipment and large outdoor display where large size and high reliable touch performance are sought. The metal grid touch panel can obviously reduce the resistance value of an effective channel area of a large-size touch panel, reduce RC delay, meet performance requirements by adopting a conventional IC, and is beneficial to reducing product cost and improving product quality so as to further widen the application field of the touch panel.
In one embodiment, referring to fig. 1-5, for example, the first metal grid layer 200 is prepared in fig. 2, a layer of metal is sputtered to a certain thickness on the substrate 100, and then exposed and developed to form the first effective channel region 210. Referring to fig. 3, an insulating layer 300 with a certain thickness is formed on the first effective channel region 210, and then the first insulating layer 300 is exposed and developed, wherein the first dummy region is not covered with an insulating material. Thereafter, the second metal mesh layer 400 is prepared on the first insulating layer 300 (please refer to fig. 4), and the preparation method thereof is similar to that of the first metal mesh layer 200, and is not repeated herein. Referring to fig. 5, the dotted line in fig. 5 shows a schematic structural diagram of the first metal mesh layer 200 after covering the second metal mesh layer 400. In fig. 5, the region 40 is a portion of the second effective channel region 410 in the second metal mesh layer 400, and the orthographic projection of the region 40 on the first metal mesh layer 200 is partially overlapped with the first non-effective channel region 220, so that the metal layer of the region 40 on the first effective channel region 210 becomes thicker, the resistance value is reduced, the RC delay phenomenon is weakened, the IC coverage pressure can be reduced, the IC cost in the product is reduced, and the reliability of the product quality is further ensured.
In order to solve the technical problem, the invention adopts another technical scheme that: an intelligent terminal is provided.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of an intelligent terminal according to the present invention, wherein the intelligent terminal 1 includes any one of the touch panels 10. The intelligent terminal 1 includes but is not limited to a mobile phone, a tablet computer, a medical display screen, an outdoor display screen and the like.
In summary, the present invention discloses a metal grid touch panel and an intelligent terminal, wherein the touch panel includes: a substrate 100; a first metal mesh layer 200 disposed on the substrate 100 and including a first active channel region 210 and a first inactive channel region 220; a first insulating layer 300 completely covering the first effective channel region 210 of the first metal mesh layer 200, and partially covering or completely uncovering the first non-effective channel region 220 of the first metal mesh layer 200; a second metal mesh layer 400 disposed on the first insulating layer 300 and overlapping the first metal mesh layer 200, which includes a second effective channel region 410, wherein the second effective channel region 410 partially or completely overlaps the first non-effective channel region 220 not covered by the first insulating layer 300. Through the above manner, the second effective channel region 410 and the first non-effective channel region 220 not covered by the first insulating layer 300 are overlapped, the metal thickness of the second effective channel region 410 is increased, the impedance of the second effective channel is reduced, the covering pressure of the IC can be reduced, the cost of the IC in the product is reduced, and the reliability of the product quality is more ensured.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A metal mesh touch panel, comprising:
a substrate;
a first metal mesh layer disposed on the substrate and including a first active channel region and a first inactive channel region;
a first insulating layer completely covering the first active channel region of the first metal mesh layer, partially covering or completely uncovering the first inactive channel region of the first metal mesh layer;
a second metal mesh layer disposed on the first insulating layer and overlapping the first metal mesh layer, including a second effective channel region, wherein at least a portion of the first non-effective channel region not covering the first insulating layer partially or completely overlaps the second effective channel region;
the first effective channel area comprises a first conductive pattern routing and a first effective channel peripheral routing; the second effective channel area comprises a second conductive pattern routing and a second effective channel peripheral routing; the first non-effective channel area comprises a first dummy trace; the second metal grid layer further comprises a second non-effective channel area, and the second non-effective channel area comprises second dummy routing; the first dummy trace is at least partially overlapped with the second conductive pattern trace that does not cover the first insulating layer.
2. The touch panel according to claim 1, further comprising:
a second insulating layer completely covering the second metal mesh layer.
3. The touch panel of claim 1, wherein the metal of the first metal grid layer is a flexible metal, and the flexible metal is aluminum or copper; the metal forming the second metal grid layer is flexible metal, and the flexible metal is aluminum or copper.
4. The touch panel of claim 1, wherein the first effective channel region comprises one or more of a straight line shape, a curved shape, or a broken line shape; the second active channel region includes one or more of a straight line shape, a curved line shape, or a dog-leg shape.
5. The touch panel of claim 1, wherein the first metal mesh layer and the second metal mesh layer are the same thickness.
6. The touch panel of claim 1, wherein the first conductive pattern trace line width is 3-6 microns, and the first conductive pattern trace pitch is greater than 20 microns; the line width of the second conductive pattern wiring is 3-6 microns, and the distance between the second conductive pattern wirings is larger than 20 microns.
7. The touch panel of claim 1, wherein the substrate is a flexible substrate.
8. The touch panel of claim 1, wherein the touch panel is greater than 27 inches in size.
9. An intelligent terminal, characterized in that the intelligent terminal comprises the touch panel of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810807249.1A CN108803938B (en) | 2018-07-18 | 2018-07-18 | Metal grid touch panel and intelligent terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810807249.1A CN108803938B (en) | 2018-07-18 | 2018-07-18 | Metal grid touch panel and intelligent terminal |
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| Publication Number | Publication Date |
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| CN108803938A CN108803938A (en) | 2018-11-13 |
| CN108803938B true CN108803938B (en) | 2021-07-27 |
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