Piezoelectric electret material assembly, preparation method and application

A technology of piezoelectric electret and components, applied in piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., can solve problems such as inability to achieve grounding, and achieve structural The effect of simplicity, high efficiency and simple process

Active Publication Date: 2018-06-29
BEIGU NEW MATERIAL TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent conduction with the ground layer, the metal electrode layer must be wrapped, so it cannot be grounded.

Method used

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  • Piezoelectric electret material assembly, preparation method and application
  • Piezoelectric electret material assembly, preparation method and application
  • Piezoelectric electret material assembly, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is the front view of the composite layer of the piezoelectric electret sensor in the first embodiment.

[0029] Such as figure 1 As shown, the composite layer of the piezoelectric electret sensor includes: an insulating layer 10 , a metal ground layer 20 and a piezoelectric electret material assembly 30 arranged in sequence.

[0030] figure 2 It is the front view of the piezoelectric electret material assembly of the first embodiment.

[0031] Such as figure 2 As shown, the piezoelectric electret material assembly 30 includes: a piezoelectric electret layer 31 , a metal positive electrode layer 32 and an insulating layer 33 arranged in sequence.

[0032] image 3 It is a top view of the metal positive electrode layer and the insulating layer of the first embodiment.

[0033] Such as image 3 As shown, the metal positive electrode layer 32 includes: several independent and repeated metal electrode units 32-1, connecting electrodes 32-2 and pins 32-3 ...

Embodiment 2

[0049] Figure 5 It is the front view of the composite layer of the piezoelectric electret sensor in the second embodiment.

[0050] Such as Figure 5 As shown, the composite layer of the piezoelectric electret sensor includes: an insulating layer 10 , a metal ground layer 20 , a piezoelectric electret material assembly 30 , a metal ground layer 40 and an insulating layer 50 arranged in sequence.

[0051] Figure 6 It is the front view of the piezoelectric electret material assembly of the second embodiment.

[0052] Such as Figure 6 As shown, the piezoelectric electret material assembly 30 includes: a piezoelectric electret layer 31 , a metal positive electrode layer 32 and an insulating layer 33 arranged in sequence.

[0053] Figure 7 It is a top view of the metal positive electrode layer and the insulating layer of the second embodiment.

[0054] Such as Figure 7 As shown, the metal positive electrode layer 32 includes: several independent and repeated metal elect...

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PUM

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Abstract

The invention provides a piezoelectric electret material assembly. The assembly comprises a piezoelectric electret layer, a metal positive electrode layer and an insulating layer which are arranged sequentially; the metal positive electrode layer comprises a plurality of independent metal electrode units and a connection electrode, wherein the metal electrode units are repeatedly disposed, and theconnection electrode is in conductive connection with all the metal electrode units. The piezoelectric electret material assembly of the invention has electric fields with opposite directions. The piezoelectric electret material assembly is prepared at first, and the prepared piezoelectric electret material assembly is polarized, and therefore, the probability of dust accumulation on the surfaceof the material can be decreased. The piezoelectric electret material assembly has the advantages of simple structure, convenient preparation, simple process and high efficiency, and is suitable for mass production in factories.

Description

technical field [0001] The invention relates to a piezoelectric electret material component, a preparation method and an application. Background technique [0002] A piezoelectric transducer is a device that converts mechanical energy into electrical energy, or converts electrical energy into mechanical energy. The former is called a sensor and the latter is called an actuator. The core material in piezoelectric transducers-piezoelectric material is a piezoelectric transducing material that can realize the conversion between mechanical energy and electrical energy. Piezoelectric electret materials are a new generation of non-polar functional materials with piezoelectric properties that have emerged in recent years. Piezoelectric electret materials have permanent charges stored inside or on their surfaces, which require polarization. [0003] The polarization mechanism of the piezoelectric electret material is: when an external electric field is applied to the piezoelectric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/047H01L41/08H01L41/257
CPCH10N30/87H10N30/00H10N30/045
Inventor 李彦坤
Owner BEIGU NEW MATERIAL TECH SHANGHAI
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