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Piezoelectric ceramics sensor and preparation method thereof

A technology of piezoelectric ceramics and manufacturing methods, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., which can solve problems such as difficult realization and troublesome operation , to achieve the effect of strong practicability and unique design of electrical connection structure

Inactive Publication Date: 2010-06-02
AAC TECH PTE LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Piezoelectric ceramics sensor and preparation method thereof
  • Piezoelectric ceramics sensor and preparation method thereof
  • Piezoelectric ceramics sensor and preparation method thereof

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 and figure 2 As shown, the piezoelectric ceramic sensor 100 according to the embodiment of the present invention includes 6 layers of rectangular ceramic sheets 1 and 7 layers of electrodes 2 stacked alternately.

[0023] Each ceramic sheet 1 has the same shape and size, including a front surface 10 and a reverse surface 11 opposite to the front surface. Each layer of ceramic sheets is divided into two parts with opposite polarization directions by its center line. Two through holes 12 are arranged on the top, and the two through holes of each ceramic sheet are respectively aligned.

[0024] Each layer of electrodes 2 includes a left electrode 21 and a right electrode 22, and the left electrode 21 and the right electrode 22 are separated in half relative to the surface of the ceramic sheet 1, that is, separated from the cente...

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Abstract

The invention provides a piezoelectric ceramic transducer and a method for preparing the transducer, wherein each layer of electrodes of the piezoelectric ceramic transducer comprises left electrodesand right electrodes, the left electrodes and the right electrodes on the two adjacent layers of electrodes are mutually interlaced and are electrically connected through through-holes which are arranged on ceramic plates between the left and the right electrodes. Compared with the prior art, the electrical connecting structure of the electrodes of the piezoelectric ceramic transducer has specialdesign and good practicality.

Description

technical field [0001] The invention relates to a piezoelectric ceramic sensor and a manufacturing method thereof, in particular to an electrode 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] Related existing 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/083H01L41/047H01L41/22H01L41/29
Inventor 阮学政何杰马国阳
Owner AAC TECH PTE LTD
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