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Multi-Channel Piezo Film Polarization Fixture

A piezoelectric thin film, multi-channel technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problems of slow polarization speed, low polarization voltage, low sensitivity, etc. The effect of preventing film breakdown, increasing polarization voltage, and simple preparation work

Active Publication Date: 2019-11-08
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a multi-channel clampable piezoelectric film polarization fixture to solve some contradictions in the existing polarization technology: (1) The piezoelectric film has a small polarization area, and the polarization Slow speed, low efficiency, and high cost; (2) The piezoelectric film has a large polarization area, low polarization voltage, poor effect after polarization, and low sensitivity; (3) Bonding between the piezoelectric film and the polarized metal sheet If it is not strict, an arc will be generated during polarization, which will cause the film to break down easily and make it difficult to obtain high-quality products

Method used

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  • Multi-Channel Piezo Film Polarization Fixture
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  • Multi-Channel Piezo Film Polarization Fixture

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Embodiment Construction

[0033] Below, the present invention is described in detail with reference to accompanying drawing and embodiment:

[0034] Such as Figure 1~5 As shown, a multi-channel piezoelectric film polarization fixture includes a clamping frame plate 3, and the space enclosed by the clamping frame plate 3 is provided with loading steel plates 4 that are close to or far away from each other and parallel to each other. Two opposite end faces of the steel plate 4 are provided with polarized copper sheets 5 clamping the piezoelectric film 7 .

[0035] Positive lead wires 8 or negative lead lead wires 9 are provided on opposite end surfaces of the polarized copper sheet 5 .

[0036] The polarized copper sheet 5 is connected to the positive lead-out wire 8 and the negative lead-out wire 9 through welding points 10 , and is connected to the leakage protector 12 of the DC high-voltage power supply 14 .

[0037] The polarized copper sheet 5 alone forms a loop.

[0038] The clamping frame plat...

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Abstract

The invention discloses a multi-channel piezoelectric film polarization fixture, which includes a clamping frame plate, and loading steel plates close to or far away from each other and parallel to each other are arranged in the space enclosed by the clamping frame plate. A polarized copper sheet clamping the piezoelectric film is arranged on the two opposite end faces. The present invention improves the polarization voltage and the sensitivity of the piezoelectric sensor. The present invention prevents closed air bubbles between the polarized copper sheet and the film during the polarization process and prevents film breakdown caused by the formation of high-voltage arcs. The present invention improves the The polarization speed of the piezoelectric thin film reduces the cost, the preparation work is simple, the operability is strong, and large-scale industrial production can be carried out.

Description

technical field [0001] The invention belongs to the field of intelligent material research, and in particular relates to a multi-channel piezoelectric film polarization fixture. Background technique [0002] At present, piezoelectric thin film sensors are widely used in many fields such as medicine, construction engineering, aerospace and so on. As for the piezoelectric film sensor, how to improve its sensitivity is the key to research. The polarization of the piezoelectric film is the most important link in the process of endowing the piezoelectric film sensor with high voltage performance and high sensing accuracy. Therefore, how to optimize the polarization process of piezoelectric materials, improve some problems existing in the current polarization fixture, improve the efficiency and effect of polarization, reduce the cost of polarization, and improve the sensitivity and sensing accuracy of piezoelectric sensors is particularly important. . [0003] In view of this, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/257H10N30/045
CPCH10N30/045
Inventor 张玉栋毕全超贾绍宁石阳贾绍琨
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING