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Multi-layer piezoelectric ceramic vibration component

A piezoelectric ceramic and vibrating element technology, applied in the field of multilayer piezoelectric ceramic vibrating elements, can solve the problems of reducing the working life, aggravating the fatigue and fracture of the piezoelectric vibrating element, etc. Effect

Inactive Publication Date: 2018-04-20
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the stress will aggravate the fatigue and fracture of the multi-layer piezoelectric vibration element, reducing the working life

Method used

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  • Multi-layer piezoelectric ceramic vibration component
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  • Multi-layer piezoelectric ceramic vibration component

Examples

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Embodiment Construction

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0046] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0047] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0048] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a multi-layer piezoelectric ceramic vibration component. The vibration component comprises a piezoelectric ceramic assembly, wherein the piezoelectric ceramic assembly comprises multiple piezoelectric ceramic layers and multiple electrode layers and is configured in a way that the contraction quantity of the piezoelectric ceramic layer near to a bending side is larger thanor equal to the contraction quantity of the piezoelectric ceramic layer far away from the bending side when the piezoelectric ceramic assembly is bent due to contraction, the contraction quantity of the piezoelectric ceramic layer at a distance nearest to the bending side is larger than the contraction quantity of the piezoelectric ceramic layer at a distance farthest to the bending side; and thepiezoelectric ceramic assembly is bent due to stretching, the stretching quantity of the piezoelectric ceramic layer near to the bending side is smaller or equal to the stretching quantity of the piezoelectric ceramic far away from the bending side, and the contraction quantity of the piezoelectric ceramic layer at a distance nearest to the bending side is smaller than the stretching quantity of the piezoelectric ceramic layer at a distance farthest to the bending side.

Description

technical field [0001] The present invention relates to the technical field of piezoelectric ceramics, and more particularly relates to a multilayer piezoelectric ceramic vibrating element. Background technique [0002] Piezoelectric ceramics have an inverse piezoelectric effect. Under the action of electrical signals, it can be used as a piezoelectric speaker vibrator or a piezoelectric vibrator vibrator. The existing piezoelectric speaker vibrator or piezoelectric vibrator vibrator generally adopts d 31 vibration pattern. It usually consists of two structures: 1) piezoelectric single crystals are mounted on thin sheets of other materials (including ceramics, metal, glass, etc.); bending vibration is formed by using the difference in displacement after applying an electrical signal; 2) two piezoelectric The single crystals are sintered together, and by controlling the polarization direction of the piezoelectric ceramics and the signal input direction, the vibration direc...

Claims

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Application Information

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IPC IPC(8): H02N2/04H02N2/06
CPCH02N2/04H02N2/06
Inventor 张丹阳俞胜平高洪伟张子会
Owner GOERTEK INC