Invention Grant
- Patent Title: Method for driving piezoelectric element, piezoelectric element, and piezoelectric element applied device
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Application No.: US14971548Application Date: 2015-12-16
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Publication No.: US09865796B2Publication Date: 2018-01-09
- Inventor: Naoto Yokoyama
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2015-017778 20150130
- Main IPC: H01L41/04
- IPC: H01L41/04 ; H01L41/187 ; B41J2/045

Abstract:
A method for driving a piezoelectric element including a first electrode, a piezoelectric layer formed on the first electrode and containing a composite oxide of an ABO3 type perovskite structure, and a second electrode formed on the piezoelectric layer, and the method includes driving the piezoelectric element by applying a signal having a predetermined driving waveform by a predetermined number of times, and driving the piezoelectric element by applying a signal having the predetermined driving waveform in reverse polarity.
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