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Temperature-varying polarization device and method for piezoelectric element

A piezoelectric element and component technology, applied in the field of piezoelectric element temperature-variable polarization devices, can solve the problems of loss of piezoelectric performance, reduction of piezoelectric performance of piezoelectric elements, etc.

Active Publication Date: 2018-12-18
GOERTEK MICROELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, after the polarization is completed and the power is turned off, the high temperature will cause the piezoelectric ceramics to depolarize and lose a certain piezoelectric performance, resulting in a decrease in the piezoelectric performance of the piezoelectric element.

Method used

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  • Temperature-varying polarization device and method for piezoelectric element
  • Temperature-varying polarization device and method for piezoelectric element
  • Temperature-varying polarization device and method for piezoelectric element

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0053]In addition, if there are descriptions involving "first", "second" and s...

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Abstract

The invention discloses a temperature-varying polarization device and method for a piezoelectric element. The temperature-varying polarization device for the piezoelectric element comprises a controlassembly, wherein the control assembly comprises a pressurizing unit and a control unit; a polarization cell for containing silicone oil; and a polarization assembly comprises a fixed seat and a moving assembly connected with the fixed seat. The pressurizing unit is electrically connected with the fixed seat. The moving assembly is electrically connected with the control unit. The moving assemblydrives the fixed seat to move into or out of the silicone oil in the container. The variable temperature polarization device of the piezoelectric element of the present invention is aimed at achievingrapid cooling without reducing piezoelectric performance.

Description

technical field [0001] The invention relates to the technical field of piezoelectric element polarization, in particular to a temperature-variable polarization device and method for piezoelectric elements. Background technique [0002] Piezoelectric elements currently on the market, especially piezoelectric ceramics, need to go through a polarization process before they can be used. The traditional polarization method is to immerse the piezoelectric element and polarization equipment in an oil bath with a set polarization temperature for polarization, and the polarization temperature remains unchanged during the polarization process. [0003] The main purpose of the polarization process is to make the spontaneous dipoles in the piezoelectric element be oriented by overcoming the coercive field under the drive of the electric field. The coercive field decreases with the increase of temperature, so it is easier to fully polarize at high temperature and obtain good piezoelectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/257H10N30/045
CPCH10N30/045
Inventor 张丹阳俞胜平孙晓铭
Owner GOERTEK MICROELECTRONICS CO LTD
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