CN117098443A - Method for manufacturing coplanar electrode of piezoelectric ceramic sheet - Google Patents
Method for manufacturing coplanar electrode of piezoelectric ceramic sheet Download PDFInfo
- Publication number
- CN117098443A CN117098443A CN202211727700.1A CN202211727700A CN117098443A CN 117098443 A CN117098443 A CN 117098443A CN 202211727700 A CN202211727700 A CN 202211727700A CN 117098443 A CN117098443 A CN 117098443A
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- Prior art keywords
- hole
- electrode
- piezoelectric ceramic
- ceramic sheet
- coplanar
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- 239000000919 ceramic Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007650 screen-printing Methods 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The invention relates to a method for manufacturing a coplanar electrode of a piezoelectric ceramic sheet. Including piezoceramics thin slice (1), piezoceramics thin slice (1) one side sets up positive electrode pad one (2), piezoceramics thin slice (1) one side middle part sets up pad two (3), piezoceramics thin slice (1) another side sets up negative electrode (4) the center of piezoceramics thin slice (1) sets up through-hole (7) on two sides of lining up, through-hole (7) inner wall sets up through-hole inner electrode (6). The invention changes the side extraction mode of the coplanar electrode into the extraction mode from the central hole; when the common screen printing technology is adopted, conductive silver paste flows from one surface to the other surface from the center hole when the front surface and the back surface of the ceramic plate are respectively printed, so that the coplanar electrodes are electrically connected through the center hole, external friction in the production process is reduced, and the failure of the electrical connection is avoided.
Description
Technical Field
The invention relates to a method for manufacturing a coplanar electrode of a piezoelectric ceramic sheet, and belongs to the technical field of functional ceramics.
Background
Piezoelectric ceramics are widely applied to various fields such as transduction, actuation, sensing and the like as functional ceramics. In many cases, the electrode needs to be manufactured on one surface for automation of production, and thus the welding automation is facilitated. The prior art is to manufacture positive and negative electrode bonding pads on the same surface, and electrically connect the other surface to one of the bonding pads through a side electrode to realize a coplanar electrode. If the sides of the piezoelectric ceramic plates are right angles, the electrical connection is easy to be unreliable, and the product is invalid. For the ceramic plate with the thickness of more than 0.5mm, the ceramic plate can be chamfered in a mechanical mode, so that the reliability of electrical connection is ensured; for ceramic plates with a thickness of less than 0.5mm, the mechanical method is difficult to chamfer the side edges of the ceramic plates, especially the piezoelectric ceramic plates applied to the ceramic plates such as reversing radar sensors, and the like, the thickness is usually only 0.2mm, so that the coplanar electrode manufactured by the traditional method is caused, and in the production process, the electrode at the right angle of the side surface is likely to fall off due to friction and the like, so that the electrical connection is invalid.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a manufacturing method of a piezoelectric ceramic sheet coplanar electrode with high reliability, which can well solve the reliability problem of a coplanar electrode piezoelectric ceramic sheet product and is easy to realize the automation of product welding.
The technical scheme adopted by the invention is as follows: the manufacturing method of the coplanar electrode of the piezoelectric ceramic sheet comprises a piezoelectric ceramic sheet (1), wherein a positive electrode bonding pad I (2) is arranged on one surface of the piezoelectric ceramic sheet (1), a bonding pad II (3) is arranged in the middle of one surface of the piezoelectric ceramic sheet (1), a negative electrode (4) is arranged on the other surface of the piezoelectric ceramic sheet (1), a through hole (7) penetrating through the two surfaces is formed in the center of the piezoelectric ceramic sheet (1), and a through hole inner electrode (6) is arranged on the inner wall of the through hole (7);
the diameter of the through hole (7) is 0.8-1.5 mm;
when the conductive silver paste is respectively printed on the front surface and the back surface of the ceramic plate by adopting the screen printing technology, the conductive silver paste flows from one surface to the other surface from the center hole, so that the coplanar electrodes are electrically connected through the center hole.
Further, the front electrode pad one (2), the pad two (3) and the through hole (7) are concentrically arranged.
Further, the diameter of the through hole (7) is 1mm.
The invention has the advantages that: the invention changes the side extraction mode of the coplanar electrode into the extraction mode from the central hole. When the common screen printing technology is adopted, conductive silver paste flows from one surface to the other surface from the center hole when the front surface and the back surface of the ceramic plate are respectively printed, so that the coplanar electrodes are electrically connected through the center hole, external friction in the production process is reduced, and the failure of the electrical connection is avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a view in the A-A direction in fig. 1.
Fig. 3 is a rear view of fig. 1.
Fig. 4, 5 and 6 are schematic structural views of conventional coplanar electrodes.
In the figure, 1 is a piezoelectric ceramic sheet, 2 is a positive electrode bonding pad I, 3 is a bonding pad II, 4 is a negative electrode, 5 is a side electrode, 6 is a through hole inner electrode, and 7 is a through hole.
Detailed Description
A manufacturing method of a coplanar electrode of a piezoelectric ceramic sheet comprises a piezoelectric ceramic sheet 1, wherein a positive electrode bonding pad I2 is arranged on one surface of the piezoelectric ceramic sheet 1, a bonding pad II 3 is arranged in the middle of one surface of the piezoelectric ceramic sheet 1, a negative electrode 4 is arranged on the other surface of the piezoelectric ceramic sheet 1, a through hole 7 penetrating through the two surfaces is arranged in the center of the piezoelectric ceramic sheet 1, and a through hole inner electrode 6 is arranged on the inner wall of the through hole 7;
the diameter of the through hole 7 is 0.8-1.5 mm;
when the conductive silver paste is respectively printed on the front surface and the back surface of the ceramic plate by adopting the screen printing technology, the conductive silver paste flows from one surface to the other surface from the center hole, so that the coplanar electrodes are electrically connected through the center hole.
Further, the front electrode pad one 2, the pad two 3 and the through hole 7 are concentrically arranged.
Further, the diameter of the through hole 7 is 1mm. The invention will be further described to better understand the invention: the invention changes the side extraction mode of the coplanar electrode into the extraction mode from the central hole. When the common screen printing technology is adopted, conductive silver paste flows from one surface to the other surface from the center hole when the front surface and the back surface of the ceramic plate are respectively printed, so that the coplanar electrodes are electrically connected through the center hole, external friction in the production process is reduced, and the failure of the electrical connection is avoided.
The diameter of the central through hole 7 of the ceramic plate is as follows: 0.8-1.5 mm, which is larger than 1.5mm, affects the performance of the piezoelectric ceramic and reduces the vibration amplitude; less than 0.8, silver paste is less likely to penetrate through the through-holes 7 during screen printing.
Claims (3)
1. The manufacturing method of the coplanar electrode of the piezoelectric ceramic sheet is characterized by comprising a piezoelectric ceramic sheet (1), wherein a positive electrode bonding pad I (2) is arranged on one surface of the piezoelectric ceramic sheet (1), a bonding pad II (3) is arranged in the middle of one surface of the piezoelectric ceramic sheet (1), a negative electrode (4) is arranged on the other surface of the piezoelectric ceramic sheet (1), a through hole (7) penetrating through the two surfaces is formed in the center of the piezoelectric ceramic sheet (1), and a through hole inner electrode (6) is arranged on the inner wall of the through hole (7);
the diameter of the through hole (7) is 0.8-1.5 mm;
when the conductive silver paste is respectively printed on the front surface and the back surface of the ceramic plate by adopting the screen printing technology, the conductive silver paste flows from one surface to the other surface from the center hole, so that the coplanar electrodes are electrically connected through the center hole.
2. The method for manufacturing the coplanar electrode of the piezoelectric ceramic thin sheet according to claim 1, wherein the first front electrode pad (2), the second pad (3) and the through hole (7) are concentrically arranged.
3. A method of manufacturing a coplanar electrode of piezoelectric ceramic sheet according to claim 2, characterized in that the diameter of the through hole (7) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211727700.1A CN117098443A (en) | 2022-12-31 | 2022-12-31 | Method for manufacturing coplanar electrode of piezoelectric ceramic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211727700.1A CN117098443A (en) | 2022-12-31 | 2022-12-31 | Method for manufacturing coplanar electrode of piezoelectric ceramic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117098443A true CN117098443A (en) | 2023-11-21 |
Family
ID=88781977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211727700.1A Pending CN117098443A (en) | 2022-12-31 | 2022-12-31 | Method for manufacturing coplanar electrode of piezoelectric ceramic sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117098443A (en) |
-
2022
- 2022-12-31 CN CN202211727700.1A patent/CN117098443A/en active Pending
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