Title:
PIEZOELECTRIC FILM AND METHOD FOR MANUFACTURING PIEZOELECTRIC FILM
Document Type and Number:
WIPO Patent Application WO/2021/075308
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a piezoelectric film having an electrode layer and a protective layer on each of the two surfaces of a piezoelectric layer and capable of preventing short-circuiting caused by an electrode sticking out from the piezoelectric layer, and a method for manufacturing the piezoelectric film. Said problem is solved by a piezoelectric film having: a piezoelectric layer; a laminate film having an electrode layer provided to each of the two surfaces of the piezoelectric layer and a protective layer covering the electrode layer; and an electrically-insulative end-surface covering layer which covers at least a part of the end surface of the laminate film.
Inventors:
KAGAWA YUSUKE (JP)
HIRAGUCHI KAZUO (JP)
HIRAGUCHI KAZUO (JP)
Application Number:
PCT/JP2020/037813
Publication Date:
April 22, 2021
Filing Date:
October 06, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H01L41/047; H01L41/053; H01L41/09; H01L41/18; H01L41/193; H01L41/29
Domestic Patent References:
| WO2019093092A1 | 2019-05-16 | |||
| WO2016121765A1 | 2016-08-04 | |||
| WO2017018313A1 | 2017-02-02 |
Foreign References:
| JP2014209724A | 2014-11-06 | |||
| JP2019161213A | 2019-09-19 |
Other References:
See also references of EP 4047671A4
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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