PIEZOELECTRIC DEVICE AND DRIVING METHOD FOR THE SAME

PROBLEM TO BE SOLVED: To provide a piezoelectric device and a driving method for the piezoelectric device which can suppress deterioration of withstanding voltage characteristics due to long-terminal deterioration and extends durable year so as to have long service life.SOLUTION: A piezoelectric dev...

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Bibliographic Details
Main Authors HOKARI YOSHIHIRO, OSAWA EIJI, KURIKI AKIRA
Format Patent
LanguageEnglish
Japanese
Published 13.04.2017
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PROBLEM TO BE SOLVED: To provide a piezoelectric device and a driving method for the piezoelectric device which can suppress deterioration of withstanding voltage characteristics due to long-terminal deterioration and extends durable year so as to have long service life.SOLUTION: A piezoelectric device includes: a piezoelectric element 300 which has a first electrode 60, a second electrode 80 and a piezoelectric body layer 70 provided between the electrodes; and a driving system which drives the piezoelectric element 300 by applying voltage to the first electrode 60 and the second electrode 80. The driving system drives the piezoelectric element 300 at a maximum voltage lower than voltage by which tunnel current or tool Frenkel current starts to generate in the piezoelectric element 300.SELECTED DRAWING: Figure 2 【課題】経年劣化による耐電圧特性の低下を抑制し、耐用年数を延ばして長寿命化を図ることが可能な圧電デバイス及び圧電デバイスの駆動方法を提供する。【解決手段】第１電極６０と、第２電極８０と、これらの間に設けられた圧電体層７０とを備えた圧電素子３００と、第１電極６０と第２電極８０とに電圧を印加することによって圧電素子３００を駆動する駆動系とを有する圧電デバイスであって、前記駆動系は、圧電素子３００にトンネル電流又はプールフレンケル電流が発生し始める電圧よりも低い最大電圧で圧電素子３００を駆動する。【選択図】図２
Bibliography:Application Number: JP20150197951