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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8864288 B1

PDFFull Text
Date of Patent:
Oct. 21, 2014

Filed:

Oct. 03, 2012

Piezoelectric device, method of manufacturing piezoelectric device, and liquid ejection head

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Takamichi Fujii, Ashigarakami-gun, JP;

Yoshikazu Hishinuma, Santa Clara, CA (US);

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP.

Primary Examiner:

Matthew Luu

Assistant Examiner:

Erica Lin

Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/14 (2006.01); H01L 41/257 (2013.01); H01L 41/29 (2013.01); H01L 41/047 (2006.01); H01L 41/316 (2013.01); H01L 41/053 (2006.01); H01L 41/09 (2006.01); H01L 41/297 (2013.01);
U.S. Cl.
CPC ...
H01L 41/0533 (2013.01); B41J 2/14233 (2013.01); H01L 41/257 (2013.01); B41J 2/045 (2013.01); H01L 41/29 (2013.01); H01L 41/0471 (2013.01); H01L 41/0477 (2013.01); H01L 41/316 (2013.01); H01L 41/0973 (2013.01); H01L 41/297 (2013.01);
Abstract

A piezoelectric device includes: a substrate; a first electrode which is layered over the substrate; a first piezoelectric film which is layered over the first electrode; a metal oxide film which is layered over the first piezoelectric film; a metal film which is layered over the metal oxide film; a second piezoelectric film which is layered over the metal film; and a second electrode which is layered over the second piezoelectric film, wherein a polarizing direction of the first piezoelectric film and a polarizing direction of the second piezoelectric film are different from each other.

Find Patent Forward Citations

Fujii, Takamichi. (2014). Piezoelectric device, method of manufacturing piezoelectric device, and liquid ejection head (U.S. Patent No. 8864288). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8864288

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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