CN216901596U - Metal circuit assembly and touch screen - Google Patents
Metal circuit assembly and touch screen Download PDFInfo
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- CN216901596U CN216901596U CN202123362832.2U CN202123362832U CN216901596U CN 216901596 U CN216901596 U CN 216901596U CN 202123362832 U CN202123362832 U CN 202123362832U CN 216901596 U CN216901596 U CN 216901596U
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Abstract
This application is applicable to and shows technical field, provides a metal line subassembly, locates on the substrate base plate, the metal line subassembly includes: a conductive circuit including a conductive metal line; and the protective metal structure is connected with the conductive metal wire, the protective metal structure and the conductive metal wire form a primary battery structure, and the protective metal structure is the anode of the primary battery structure. The application also provides a touch screen. Above-mentioned metal line subassembly and touch-sensitive screen can protect normal conductive circuit, avoid conductive metal line to take place to corrode, have promoted life.
Description
Technical Field
The application relates to the technical field of display, in particular to a metal circuit assembly and a touch screen.
Background
In a touch display device, Metal is widely used as a circuit conductive material, for example, in a Metal Mesh capacitive touch technology (Metal Mesh), wires of conductive Metal such as copper and oxide thereof are densely distributed on a substrate such as PET or glass to form a Mesh conductive layer with a regular shape, and a signal transmission function is realized by sensing touch.
Because the conducting layer is made of metal, in the long-term use process, components such as water vapor, oxygen and the like in the air can easily enter the touch display device, so that the metal conducting layer is corroded, and current is generated in the corrosion process.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a metal circuit assembly and a touch screen to solve the problem that a conductive metal layer is easily corroded in the prior art.
An embodiment of a first aspect of the present application provides a metal circuit assembly, disposed on a substrate, the metal circuit assembly including:
a conductive circuit including a conductive metal line;
and the protective metal structure is connected with the conductive metal wire, the protective metal structure and the conductive metal wire form a primary battery structure, and the protective metal structure is the anode of the primary battery structure.
In some embodiments, the protective metal structure is a metal block, and the protective metal structure overlaps the conductive metal line.
In some embodiments, a plurality of guard metal structures are connected to each conductive metal line, and the plurality of guard metal structures are spaced apart on the corresponding conductive metal line.
In some embodiments, the conductive metal line is provided with a notch, and the protective metal structure is arranged in the notch; or the like, or, alternatively,
the protective metal structure is stacked on the conductive metal wire.
In some embodiments, the protective metal structure conforms to the shape of the conductive metal line and is stacked.
In some embodiments, the protective metal structure is disposed on a surface of the conductive metal line close to the substrate base plate or a surface of the conductive metal line away from the substrate base plate, or;
the protective metal structures are arranged on two opposite surfaces of the conductive metal wire.
In some embodiments, the protective metal structure is made of at least one of nickel, nickel alloy, magnesium alloy, zinc alloy, aluminum alloy, and iron.
In some embodiments, the protective metal structure is formed by sputtering, spraying, depositing, or screen printing.
An embodiment of a second aspect of the present application proposes a touch screen, including:
a base substrate;
the metal circuit assembly according to an embodiment of the first aspect is disposed on the substrate.
In some embodiments, the conductive metal lines in the conductive circuit include a first touch electrode, a second touch electrode, a first signal trace electrically connected to the first touch electrode, and a second signal trace electrically connected to the second touch electrode, and the first touch electrode and the second touch electrode are metal mesh electrodes or ITO electrodes;
at least one of the first touch electrode, the second touch electrode, the first signal trace and the second signal trace is connected with the protective metal structure.
The metal circuit component comprises a conductive circuit and a protective metal structure, wherein the protective metal structure is connected with a conductive metal wire in the conductive circuit and forms a primary battery structure, and the protective metal structure is an anode of the primary battery structure and can be preferentially dissociated to slow down corrosion of the conductive metal wire. Therefore, the metal circuit assembly can protect a normal conductive circuit, avoid corrosion of the conductive metal wire and prolong the service life of the display device.
The touch screen comprises the substrate base plate and the metal circuit assembly, the metal circuit assembly in the touch screen can prevent the conductive metal wire from being corroded by the aid of the protective metal structure, and the service life of the touch screen is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a touch screen according to an embodiment of the present application;
fig. 2 is a schematic diagram of a structure of a primary battery according to an embodiment of the present application;
fig. 3 is a schematic cross-sectional view of a conductive metal line and a protective metal structure in a metal line assembly according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a touch screen provided in another embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of the touch screen of FIG. 4 taken along line A-A;
FIG. 6 is a schematic cross-sectional view of a touch screen taken along line A-A of FIG. 4 according to yet another embodiment of the present application;
FIG. 7 is a schematic cross-sectional view of a touch screen taken along line A-A of FIG. 4 according to yet another embodiment of the present application.
The designations in the figures mean:
1. a touch screen;
100. a metal wiring component;
10. a conductive circuit; 111. a first touch electrode; 112. a second touch electrode; 113. a first signal trace; 114. a second signal trace;
20. protecting the metal structure;
200. a base substrate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, which are examples. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
In order to explain the technical solution of the present application, the following description is made with reference to the specific drawings and examples.
The first aspect of the application provides a metal line subassembly, and the metal line subassembly can be located in multiple display device, for example, the metal line subassembly is located in capacitive touch screen, resistance-type touch screen, TFT array substrate, OLED display substrate etc. need metal lead wire or walk the line as the product of conducting medium, can corrode the protection to the conducting metal line, adapts to the demand of operational environment (such as humid environment, salt fog environment, acid-base environment etc.).
Referring to fig. 1 and fig. 2, an embodiment of a first aspect of the present application provides a metal circuit assembly 100, wherein the metal circuit assembly 100 is disposed on a substrate 200. The metal wiring assembly 100 includes a conductive circuit 10 and a protective metal structure 20, the conductive circuit 10 including a conductive metal line 11; the protective metal structure 20 is connected to the conductive metal line 10, the protective metal structure 20 and the conductive metal line 11 form a galvanic cell structure, the protective metal structure 20 is an anode of the galvanic cell structure, and the conductive metal line 11 is a cathode of the galvanic cell structure.
In the above-mentioned primary battery structure, the protective metal structure 20 is an active metal or alloy material with strong reducibility, and is used as the anode of the primary battery structure, and its potential is relatively negative and is relatively easy to lose electrons; the conductive metal line 11 is a cathode. As shown in fig. 2, in a humid environment, the protective metal structure 20 acts as an anode, dissociates into ions, undergoes an oxidation reaction and sacrificially consumes to become a sacrificial anode; the protected conductive metal wire 11 is used as a cathode, and the surface of the conductive metal wire is subjected to a reduction reaction, so that the conductive metal wire does not participate in the reaction and is prevented from being corroded.
Two kinds of metals of different electric potentials contact each other, when exposing in the work of humid environment, because protection metal structure 20 is connected with protected conductive metal line 11, along with the continuous flow of electric current, protection metal structure 20 self takes place preferential dissociation as anode material, and the electric potential is more negative base metal corrosion acceleration promptly, constantly consumes to make the more positive noble metal corrosion rate of electric potential slow down, restrain the corruption of conductive metal line 11 promptly, reach the effect of protection. This method sacrifices the metal used as the anode (negative electrode of the cell) and protects the metal of the cathode (positive electrode of the cell). The sacrificial anode protection method is used, namely, the corrosion of anode metal is used for protecting cathode metal to slow down the corrosion. For example, when metallic copper and metallic nickel are contacted in a humid environment, nickel is more reductive than copper and is an anode, and is corroded; copper is less reducing than nickel, is a cathode, and is not corroded.
The metal line assembly 100 includes a conductive circuit 10 and a protective metal structure 20, the protective metal structure 20 is connected to the conductive metal line 11 in the conductive circuit 10 and forms a galvanic cell structure, and the protective metal structure 20 is an anode of the galvanic cell structure. Therefore, the metal circuit assembly 100 can utilize the principle of micro-galvanic cell anode protection, and a protective metal structure 20 is added to the conductive circuit 10 as a sacrificial anode to protect the normal conductive circuit 10, so as to prevent the conductive metal wire 11 from being corroded, solve the problem that the conductive circuit is easy to be corroded in the use environment, and prolong the service life of the display device.
As shown in fig. 1, in some embodiments, the protective metal structure 20 is a metal block, and the protective metal structure 20 is overlapped with the conductive metal line 11.
The protective metal structure 20 may be a rectangular metal block; the protective metal structure 20 is connected to the conductive metal line 11, so that the protective metal structure and the conductive metal line can form a galvanic cell structure, thereby preventing the conductive metal line 11 from being corroded. The protective metal structure 20 is in lap joint with the conductive metal wire 11 and is in direct contact with the conductive metal wire, so that a lower contact resistance effect can be obtained, the impedance diversity matching of the protective electrode and the protected electrode can be realized through the film thickness and the metal wire width according to the electrical characteristics of the electrode material, and the control of the conduction and the release path of static electricity is facilitated when the external static electricity is faced.
The protection metal structure 20 is a metal block, and the overlapping structure of the protection metal structure 20 and the conductive metal line 11 may be as follows.
Referring to fig. 3, in an embodiment, the conductive metal line 11 is provided with a gap, and the protection metal structure 20 is disposed in the gap, that is, two ends of the protection metal structure 20 are respectively connected to the conductive metal lines 11 at two ends of the gap, so that the conductive metal line 11 and the protection metal structure 20 can be connected to each other, the impedance of the conductive metal line 11 can be prevented from being greatly affected, and the cost of the protection metal structure 20 is low.
In another embodiment, the protective metal structure 20 is stacked on the conductive metal line 11. Therefore, a notch is not required to be arranged on the conductive metal wire 11, and the manufacturing process is simpler.
In some embodiments, the conductive circuit 10 includes a plurality of conductive metal lines 11, each conductive metal line 11 is connected to a plurality of protective metal structures 20, and the plurality of protective metal structures 20 are disposed at intervals on the corresponding conductive metal line 11. For example, the protective metal structure 20 is disposed at intervals in the middle of the conductive metal line 11, or at intervals on the entire conductive metal line 11. The number and arrangement mode of the protective metal structures 20 can be adjusted according to requirements, the arrangement is flexible, and the corrosion prevention effect can be achieved; the position where the protective metal structure 20 is disposed is not limited.
Optionally, the material of the protected conductive metal line 11 may be a metal material such as copper, aluminum, molybdenum, silver, or an alloy thereof, or may be Indium Tin Oxide (ITO), but is not limited thereto; the protective metal structure 20 is made of a metal material, an alloy or a composite material having a negative potential compared to the conductive metal line 11 to be protected. Optionally, the material of the protective metal structure 20 is at least one of nickel, nickel alloy, magnesium alloy, zinc alloy, aluminum alloy, and iron. In this way, the protective metal structure 20 is a relatively active metal with relatively high reducibility, and can be used as a sacrificial anode in a galvanic cell structure.
Optionally, the protective metal structure 20 is manufactured by sputtering, spraying, depositing or silk-screen printing, and the manufacturing method is flexible and has low cost. The Deposition method can be Physical Vapor Deposition (PVD) or Chemical Vapor Deposition (CVD). Among them, the protective metal structure 20 formed by sputtering and deposition has the best anticorrosion effect because of its compact atomic bonding.
For example, the protected conductive metal line 11 is copper or a copper alloy, and the protective metal structure 20 is nickel, a nickel alloy, aluminum, or an aluminum alloy.
As another example, the conductive metal line 11 to be protected is molybdenum or a molybdenum alloy, and the protective metal structure 20 is aluminum or an aluminum alloy.
For another example, the protected conductive metal line 11 is niobium or a niobium alloy, and the protective metal structure 20 is zinc or a zinc alloy.
Referring to fig. 4, another embodiment of the first aspect of the present disclosure provides a metal circuit assembly 100, wherein the metal circuit assembly 100 is disposed on a substrate 200. The metal wiring assembly 100 includes a conductive circuit 10 and a protective metal structure 20, the conductive circuit 10 including a conductive metal line 11; the protective metal structure 2020 is connected to the conductive metal line 11, the protective metal structure 20 and the conductive metal line 11 form a galvanic cell structure, the protective metal structure 20 is an anode of the galvanic cell structure, and the conductive metal line 11 is a cathode of the galvanic cell structure. Unlike the first embodiment, the protection metal structure 20 is in a shape consistent with the conductive metal line 11 and is stacked, i.e., the protection metal structure 20 may be disposed along the conductive metal line 11 and overlap with the conductive metal line 11.
Referring to fig. 5, in an embodiment, the protection metal structure 20 is disposed on a surface of the conductive metal line 11 close to the substrate 200.
Referring to fig. 6, in an embodiment, the protection metal structure 20 is disposed on a surface of the conductive metal line 11 away from the substrate 200.
Referring to fig. 7, in one embodiment, the protection metal structures 20 are simultaneously disposed on two opposite sides of the conductive metal line 11.
It is understood that in fig. 5 to 7, other film layers may be disposed between the conductive metal line 11 and the substrate 200, and the illustration is omitted here.
Referring to fig. 1 and fig. 3, an embodiment of a second aspect of the present application provides a touch screen 1, which includes a substrate 200 and a metal circuit assembly 100 disposed on the substrate 200, wherein the metal circuit assembly 100 includes a conductive circuit 10 and a protective metal structure 20.
The conductive metal line 11 in the conductive circuit 10 includes a first touch electrode 111, a second touch electrode 112, a first signal trace 113 electrically connected to the first touch electrode 111, and a second signal trace 114 electrically connected to the second touch electrode 112, wherein the first touch electrode 111 and the second touch electrode 112 are metal mesh electrodes or ITO electrodes; at least one of the first touch electrode, the second touch electrode, the first signal trace 113 and the second signal trace 114 is connected to the protection metal structure 20.
For example, the first touch electrode 111 and the second touch electrode 112 are both metal mesh electrodes, and the first touch electrode 111, an insulating layer (not shown) and the second touch electrode 112 are sequentially disposed on the substrate 200. The touch screen 1 includes a touch area and a routing area disposed around the touch area, the first touch electrode 111 and the second touch electrode 112 are disposed in the touch area, and the first signal routing 113 and the second signal routing 114 are disposed in the routing area. Since the second touch electrode is located above the first touch electrode 111, the second touch electrode 112 is connected to the protective metal structure 20; it is understood that the first touch electrode 111 may also be connected with the protective metal structure 20. In addition, the protection metal structure 20 may also be connected to the first signal trace 113 and/or the second signal trace 114.
For another example, the first touch electrode 111 and the second touch electrode 112 are both ITO electrodes, the first signal trace 113 and the second signal trace 114 are both metal traces, the first touch electrode 111 and/or the second touch electrode 112 may be connected to the protective metal structure 20, and at this time, the protective metal structure 20 is made of aluminum or aluminum alloy; the guard metal structure 20 may also be connected to the first signal trace 113 and/or the second signal trace 114.
The touch screen 1 can prevent the conductive metal wire 11 from being corroded by the protective metal structure 20, so that the service life of the touch screen 1 is prolonged. The touch screen 1 can be applied to a touch display device, and the touch display device can be any product or component with a touch display function, such as a smart phone, a tablet computer, a smart bracelet, a smart watch, a touch screen display, a notebook computer, a digital photo frame and the like.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and they should be construed as being included in the present application.
Claims (9)
1. A metal wiring assembly disposed on a substrate, the metal wiring assembly comprising:
a conductive circuit including a conductive metal line;
and the protective metal structure is connected with the conductive metal wire, the protective metal structure and the conductive metal wire form a primary battery structure, and the protective metal structure is the anode of the primary battery structure.
2. The metal wiring assembly of claim 1, wherein said protective metal structure is a metal block and said protective metal structure overlaps said conductive metal line.
3. The metal line assembly of claim 2, wherein a plurality of guard metal structures are connected to each of the conductive metal lines and are spaced apart on the corresponding conductive metal line.
4. The metal wiring assembly of claim 2, wherein said conductive metal line has a notch, said protective metal structure being disposed in said notch; or the like, or, alternatively,
the protective metal structure is stacked on the conductive metal wire.
5. The metal line assembly of claim 1, wherein the protective metal structure conforms to a shape of the conductive metal line and is disposed in a stack.
6. The metal wiring assembly as in claim 5, wherein said protective metal structure is disposed on one side of said conductive metal line that is closer to said substrate base or away from said substrate base, or;
the protective metal structures are arranged on two opposite surfaces of the conductive metal wire.
7. The metal line assembly of any one of claims 1-6, wherein the protective metal structure is one of nickel, a nickel alloy, magnesium, a magnesium alloy, zinc, a zinc alloy, aluminum, an aluminum alloy, and iron.
8. A touch screen, comprising:
a substrate base plate;
the metal wiring assembly as in any of claims 1-7, disposed on said substrate base plate.
9. The touch screen of claim 8, wherein the conductive metal lines in the conductive circuit comprise a first touch electrode, a second touch electrode, a first signal trace electrically connected to the first touch electrode, and a second signal trace electrically connected to the second touch electrode, and the first touch electrode and the second touch electrode are metal mesh electrodes or ITO electrodes;
at least one of the first touch electrode, the second touch electrode, the first signal trace and the second signal trace is connected with the protective metal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123362832.2U CN216901596U (en) | 2021-12-28 | 2021-12-28 | Metal circuit assembly and touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123362832.2U CN216901596U (en) | 2021-12-28 | 2021-12-28 | Metal circuit assembly and touch screen |
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| CN216901596U true CN216901596U (en) | 2022-07-05 |
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| CN202123362832.2U Active CN216901596U (en) | 2021-12-28 | 2021-12-28 | Metal circuit assembly and touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114265519A (en) * | 2021-12-28 | 2022-04-01 | 重庆莱宝科技有限公司 | Metal circuit assembly and touch screen |
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- 2021-12-28 CN CN202123362832.2U patent/CN216901596U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114265519A (en) * | 2021-12-28 | 2022-04-01 | 重庆莱宝科技有限公司 | Metal circuit assembly and touch screen |
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