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Novel piezoelectric sensor and preparation thereof

A technology of piezoelectric ceramics and manufacturing method, which is applied in the direction of sensors, sensor types, piezoelectric/electrostrictive transducers, etc. Sexual connection structure design unique effect

Active Publication Date: 2009-03-11
AAC MICROTECH CHANGZHOU +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if for multilayer ceramic sheet (for example three or more than three sheets), then need multilayer substrate, and each electrode that is applied to each ceramic sheet all extends to the end of substrate to realize to be connected with external circuit, This operation is very cumbersome and difficult to implement

Method used

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  • Novel piezoelectric sensor and preparation thereof
  • Novel piezoelectric sensor and preparation thereof
  • Novel piezoelectric sensor and preparation thereof

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Embodiment approach

[0024] The nine-layer electrode 2 includes a first-layer external electrode 21 , a second-layer electrode 22 , a third-layer electrode 23 . . . an eighth-layer electrode 28 , and a ninth-layer electrode 29 . The length of the electrodes of each layer is less than that of the ceramic sheet, wherein the adjacent electrodes are respectively aligned with the left end and the right end of the ceramic sheet. That is, as an embodiment of the present invention: the second layer electrode, the fourth layer electrode, the sixth layer electrode, and the eighth layer electrode are aligned with the left end of the ceramic sheet, and the third layer electrode, the fifth layer electrode, the seventh layer electrode, The ninth electrode is aligned with the right end of the ceramic sheet. Because the length of each electrode is less than the length of the ceramic sheet, so the second layer electrode, the fourth layer electrode, the sixth layer electrode, and the eighth layer electrode only exp...

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Abstract

The invention provides a novel piezoelectric sensor. The each layer of electrodes of the piezoelectric sensor are electrically connected with isolating layers respectively through electrodes arranged at both ends of a ceramic plate. Compared with the prior art, the design of electrical connection structure of the piezoelectric sensor is unique, the practicability is strong, the connecting area of the mutually connected electrodes is large, and the electrical connection is reliable.

Description

technical field [0001] The invention relates to a piezoelectric ceramic sensor and a manufacturing method thereof, in particular to an electrode connection structure of the piezoelectric ceramic sensor and a manufacturing method thereof. Background technique [0002] The ceramic sheet has an inverse piezoelectric effect, that is, mechanical deformation occurs under the action of an external electric field. Taking advantage of this feature, ceramic sheets can be used to make piezoelectric sensors, such as piezoelectric speakers, piezoelectric vibrators, and so on. [0003] Piezoelectric ceramic sensors with relatively simple structures, such as Figure 4 Shown, comprise substrate 41, two ceramic sheets (42a, 42b), on the upper and lower surfaces of substrate 41, are printed with the silver glue electrode 410 that is applied to the electric field of two ceramic sheets, two ceramic sheets are bonded on substrate completely on the upper and lower surfaces. Each electrode exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/083H01L41/047H04R17/00B06B1/06H01L41/24H04R31/00H10N30/50H10N30/063H10N30/87
Inventor 阮学政
Owner AAC MICROTECH CHANGZHOU
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