CN110888558A - Touch panel and touch device - Google Patents
Touch panel and touch device Download PDFInfo
- Publication number
- CN110888558A CN110888558A CN202010001040.3A CN202010001040A CN110888558A CN 110888558 A CN110888558 A CN 110888558A CN 202010001040 A CN202010001040 A CN 202010001040A CN 110888558 A CN110888558 A CN 110888558A
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- CN
- China
- Prior art keywords
- ground layer
- layer
- touch panel
- ground
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 claims description 180
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 15
- 230000003068 static effect Effects 0.000 abstract description 15
- 238000005336 cracking Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000003698 laser cutting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003550 marker Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002042 Silver nanowire Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention relates to a touch panel and a display device, wherein the touch panel comprises a substrate, a first grounding layer and a second grounding layer; the first grounding layer is arranged at the edge of the substrate; the second grounding layer is arranged on the first grounding layer; the first ground layer or the second ground layer comprises a metal wire, and the first ground layer and the second ground layer are both annular and have ground potential. In the touch panel, the first ground layer is arranged on the edge of the substrate, the second ground layer is arranged on the first ground layer, and the first ground layer and the second ground layer are grounded, so that static electricity acting on the touch panel can be led out to the ground by the first ground layer and the second ground layer, the touch panel is prevented from being damaged by the static electricity, and the first ground layer or the second ground layer is provided with the metal wire, so that the ground layer is prevented from cracking during cutting, and the anti-static effect of the ground layer can be ensured.
Description
Technical Field
The present invention relates to the field of touch technologies, and in particular, to a touch panel and a touch device.
Background
With the improvement of panel technology and the popularization of electronic products, touch devices with operation interfaces disposed on a panel are more and more widely used, such as user interfaces of electronic products, such as mobile phones, media players, navigation systems, and digital cameras. The touch devices are classified into resistive, capacitive, optical, and surface acoustic wave based on the sensing technology.
When a user uses the touch device, the user usually needs to touch and press the panel with a finger in an operation mode, so that static electricity on the finger of the human body is conducted to the surface of the panel, and then electronic components in the touch panel are damaged, such as screen defects, dissolution of metal wires, change of component resistance values, damage or breakdown of an oxide layer, and influence on an electronic circuit or a controller taking the microprocessor as a center to generate misoperation. With the trend of the touch panel toward a narrow frame, the anti-static design of the touch panel is often omitted, so that the touch device is damaged by static electricity during the use process.
Disclosure of Invention
Therefore, it is necessary to omit the design of preventing static electricity for the touch panel, which leads to the problem that the touch device is damaged by static electricity during the use process, and a touch panel and a touch device are provided.
A touch panel, comprising:
a substrate;
the first grounding layer is arranged on the edge of the substrate; and
the second grounding layer is arranged on the first grounding layer;
the first ground layer or the second ground layer includes a metal line, and the first ground layer and the second ground layer are both annular and at ground potential.
In one embodiment, the first ground plane includes a metal line and the second ground plane includes a metal layer.
In one embodiment, the first ground plane includes a metal layer and the second ground plane includes a metal line.
In one embodiment, the first ground layer includes a metal line, and the second ground layer includes a metal layer and a metal line.
In one embodiment, the first ground layer includes a metal layer and a metal line, and the second ground layer includes a metal line.
In one embodiment, the width of the first ground layer and the second ground layer is greater than or equal to 0.2 mm.
In one embodiment, the metal wire has a diameter of 2 to 30 microns.
In one embodiment, the substrate comprises a display area and a non-display area surrounding the display area; the touch panel further comprises a plurality of signal lines, the first ground layer, the second ground layer and the plurality of signal lines are all arranged in the non-display area, and the distance between the signal line with the minimum distance to the first ground layer or the second ground layer and the first ground layer or the second ground layer is larger than 0.1 mm.
In one embodiment, the method further comprises the following steps:
and the protective layer is arranged on the second grounding layer.
A touch device comprises the touch panel.
According to the touch panel and the display device, the first grounding layer is arranged on the edge of the substrate, the second grounding layer is arranged on the first grounding layer, and the first grounding layer and the second grounding layer are both annular and have the grounding potential, so that static electricity acting on the touch panel can be led out to the ground through the first grounding layer and the second grounding layer, the touch panel is prevented from being damaged by the static electricity, and the first grounding layer or the second grounding layer is provided with the metal wire, so that the grounding layer is prevented from cracking during cutting, and the anti-static effect of the grounding layer can be ensured.
Drawings
Fig. 1 is a schematic structural diagram of a touch device in an embodiment;
FIG. 2 is a top view of a touch panel in an embodiment;
FIG. 3 is a cross-sectional view of a touch panel in one embodiment;
FIG. 4 is a top view of a touch panel in another embodiment;
fig. 5 is a schematic structural diagram of a first ground layer and a second ground layer in an embodiment;
fig. 6 is a schematic structural diagram of a first ground layer and a second ground layer in another embodiment;
fig. 7 is a schematic structural diagram of a first ground layer and a second ground layer in another embodiment;
fig. 8 is a schematic structural diagram of a first ground layer and a second ground layer in another embodiment;
FIG. 9 is a top view of a touch panel in another embodiment;
fig. 10 is a schematic structural diagram of a marker in an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 4, an embodiment of the present invention provides a touch device, which includes a touch panel 100 and a control module 200. The touch panel 100 includes a substrate 10, a first ground layer 20, a second ground layer 30, a plurality of signal lines 40, a mark body 50 and a protection layer 60.
The first ground layer 20 is disposed on the edge of the substrate 10, and the second ground layer 30 is disposed on the first ground layer 20. The first ground layer 20 or the second ground layer 30 includes a metal line, and the first ground layer 20 and the second ground layer 30 are grounded.
The substrate 10 includes a display region 101 and a non-display region 102 surrounding the display region 101. The display area 101 is an area where a touch operation by a user is sensed, and is also an area where an image is displayed. The display region 101 has a conductive layer, which may be an Indium Tin Oxide (ITO), MMF (Metal MESH Film), silver nano-wire (AgNW), carbon nanotube, conductive polymer, or other conductive layer, and in the present embodiment, the conductive layer may be an MMF. The display region 101 includes scan lines arranged in a row direction and extending in a column direction and data lines arranged in the column direction and extending in the row direction. One end of each signal line 40 is electrically connected to the display region 101, that is, one end of each signal line 40 is connected to one scan line or one data line, and the other end is connected to the control module 200.
When the display area 101 is touched by a user, the display area 101 generates touch information, the touch information is transmitted to the control module 200 through the plurality of signal lines 40, static electricity on fingers of the human body is conducted to the touch panel 100 due to contact of the human body, the first ground layer 20 and the second ground layer 30 conduct the static electricity acting on the touch panel 100 to the ground, and interference of the static electricity on the display area 101, the signal lines 40 and the control module 200 is avoided, so that the integrity of information transmission between the control module 200 and the display area 101 is ensured. The control module 200 is further configured to transmit control signals to the display area 101 through the plurality of signal lines 40 to control display information of the display area 101.
As shown in fig. 2, the first ground layer 20 and the second ground layer 30 may be annular, that is, the first ground layer 20 and the second ground layer 30 are disposed around the edge of the substrate 10, and the first ground layer 20, the second ground layer 30 and the plurality of signal lines 40 are disposed on different layers, respectively, so that the plurality of signal lines 40 can extend out of the touch panel 100 without contacting the first ground layer 20 and the second ground layer 30 and be connected to the control module 200. The first ground layer 20, the second ground layer 30 and the plurality of signal lines 40 are disposed in the non-display area 102, and the edge of the substrate 10 is the edge of the non-display area 102. The plurality of signal lines 40 are located inside the first ground layer 20 and the second ground layer 30. The distance between the signal line 40 having the smallest distance from the first ground layer 20 or the second ground layer 30 and the first ground layer 20 or the second ground layer 30 is greater than 0.1 mm, that is, the distance between the signal line 40 closest to the first ground layer 20 or the second ground layer 30 and the first ground layer 20 or the second ground layer 30 is greater than 0.1 mm, so that the first ground layer 20 and the second ground layer 30 can effectively prevent the electrostatic discharge effect.
Referring to fig. 5, in an embodiment, the first ground layer 20 includes metal lines, and the second ground layer 30 includes metal layers. When the substrate 10 is cut by laser cutting, the solid metal layer is easy to reflect and refract, so that the ground layer is easy to crack during cutting, and the metal wire is disposed in the first ground layer 20, so that if the lower knife surface is the first ground layer 20 during cutting, the refraction and reflection can be reduced, and the ground layer is prevented from cracking during cutting.
Referring to fig. 6, in an embodiment, the first ground layer 20 includes a metal layer, and the second ground layer 30 includes a metal line. When the substrate 10 is cut by laser cutting, the solid metal layer is easy to reflect and refract, so that the ground layer is easy to crack during cutting, and the metal wire is disposed in the second ground layer 30, so that if the lower knife surface is the second ground layer 30 during cutting, the refraction and reflection can be reduced, and the ground layer is prevented from cracking during cutting.
Referring to fig. 7, in an embodiment, the first ground layer 20 includes metal lines, and the second ground layer 30 includes metal layers and metal lines. When the substrate 10 is cut by laser cutting, the solid metal layer is easy to reflect and refract, so that the ground layer is easy to crack during cutting, and the metal wire is disposed in the second ground layer 30, so that if the lower knife surface is the second ground layer 30 during cutting, the refraction and reflection can be reduced, and the ground layer is prevented from cracking during cutting.
Referring to fig. 8, in an embodiment, the first ground layer 20 includes metal layers and metal lines, and the second ground layer 30 includes metal lines. When the substrate 10 is cut by laser cutting, the solid metal layer is easy to reflect and refract, so that the ground layer is easy to crack during cutting, and the metal wire is disposed in the first ground layer 20, so that if the lower knife surface is the first ground layer 20 during cutting, the refraction and reflection can be reduced, and the ground layer is prevented from cracking during cutting.
The widths of the first ground layer 20 and the second ground layer 30 are greater than or equal to 0.2 mm. The widths of the first ground layer 20 and the second ground layer 30 are both greater than or equal to 0.2 mm, so that the first ground layer 20 and the second ground layer 30 can lead static electricity acting on the touch panel 100 to the ground, and if the widths of the first ground layer 20 and the second ground layer 30 are too small, the static electricity may not be completely led out.
The diameter of the metal wire is 2 to 30 micrometers. If the diameter of the metal line is too small, the fuse may occur, and if the diameter of the metal line is too large, the width of the ground layer is too large, which is not favorable for narrowing the frame of the touch panel 100.
Referring to fig. 9, the mark body 50 is disposed on the second ground layer 30. When the second ground layer 30 includes a metal line, the flag body 50 may be a physical metal structure. When the second ground layer 30 includes a metal layer, the marker body 50 may be a metal structure provided with various shapes of through holes 51 or a structure of through holes 51 provided on the second ground layer 30. The marking body 50 is used as a mark when the substrate 10 is cut or bonded.
Referring to fig. 10, in an embodiment, the mark body 50 is substantially in the shape of a right triangle, and the mark body 50 is disposed at the annular chamfer of the second ground layer 30, where the mark body 50 can increase the width of the second ground layer 30 without affecting the distance between the second ground layer 30 and the signal line 40. The marking body 50 is further provided with a right-angled triangular through hole 51 and a rectangular through hole 51, the minimum size of the through hole 51 is equal to the cutting precision, and the width of the rectangular through hole 51 is 0.05 mm to 0.2 mm. In other embodiments, the marking body 50 may be provided with a through hole 51 having other shapes, such as a circle, as a mark.
The material of the first ground layer 20, the second ground layer 30 and the marker 50 may be silver, the material of the signal line 40 may be the same as or different from the material of the ground layer, and the material of the signal line 40 may be silver or copper or other transparent conductive material. The silver metal is generally disposed by printing and the copper metal is disposed by etching.
In one embodiment, the protection layer 60 is disposed on the second ground layer 30, and the protection layer 60 covers the ground layer for protecting the ground layer from falling off when the ground layer is fixed on the substrate 10 and isolating the ground layer from other electronic components. The material of the protective layer 60 may be an insulating ink or other insulating material.
According to the touch panel, the first grounding layer is arranged on the edge of the substrate, the second grounding layer is arranged on the first grounding layer, the first grounding layer and the second grounding layer are both annular and ground potential, therefore, static electricity acting on the touch panel can be led out to the ground through the first grounding layer and the second grounding layer, the touch panel is prevented from being damaged by the static electricity, metal wires are arranged on the first grounding layer or the second grounding layer, cracking of the grounding layer during cutting is avoided, and the anti-static effect of the grounding layer can be ensured.
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 several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the 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 panel, comprising:
a substrate;
the first grounding layer is arranged on the edge of the substrate; and
the second grounding layer is arranged on the first grounding layer;
the first ground layer or the second ground layer includes a metal line, and the first ground layer and the second ground layer are both annular and at ground potential.
2. The touch panel of claim 1, wherein the first ground layer comprises a metal line and the second ground layer comprises a metal layer.
3. The touch panel of claim 1, wherein the first ground layer comprises a metal layer and the second ground layer comprises a metal line.
4. The touch panel of claim 1, wherein the first ground layer comprises metal lines, and the second ground layer comprises metal layers and metal lines.
5. The touch panel of claim 1, wherein the first ground layer comprises a metal layer and a metal line, and the second ground layer comprises a metal line.
6. The touch panel of claim 1, wherein the width of the first ground layer and the second ground layer is greater than or equal to 0.2 mm.
7. The touch panel according to claim 1, wherein the metal wire has a diameter of 2 to 30 μm.
8. The touch panel according to claim 1, wherein the substrate includes a display area and a non-display area surrounding the display area; the touch panel further comprises a plurality of signal lines, the first ground layer, the second ground layer and the plurality of signal lines are all arranged in the non-display area, and the distance between the signal line with the minimum distance to the first ground layer or the second ground layer and the first ground layer or the second ground layer is larger than 0.1 mm.
9. The touch panel according to claim 1, further comprising:
and the protective layer is arranged on the second grounding layer.
10. A touch device comprising the touch panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001040.3A CN110888558B (en) | 2020-01-02 | 2020-01-02 | Touch panel and touch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001040.3A CN110888558B (en) | 2020-01-02 | 2020-01-02 | Touch panel and touch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110888558A true CN110888558A (en) | 2020-03-17 |
| CN110888558B CN110888558B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010001040.3A Active CN110888558B (en) | 2020-01-02 | 2020-01-02 | Touch panel and touch device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110888558B (en) |
Cited By (1)
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| CN113504841A (en) * | 2021-05-25 | 2021-10-15 | 昆山国显光电有限公司 | Touch display panel and touch display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110888558B (en) | 2024-01-02 |
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