logo

For the Inventor, By the Inventor

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 11309483 B1

PDFFull Text
Date of Patent:
Apr. 19, 2022

Filed:

Feb. 26, 2019

Piezoelectric element and liquid ejecting head

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Harunobu Koike, Matsumoto, JP;

Koichi Morozumi, Shiojiri, JP;

Assignee:

Seiko Epson Corporation;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
H01L 41/187 (2006.01); B41J 2/14 (2006.01); C04B 35/495 (2006.01); H01L 41/047 (2006.01); H01L 41/09 (2006.01); H01L 41/39 (2013.01); H01L 41/318 (2013.01); H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
H01L 41/1873 (2013.01); B41J 2/14233 (2013.01); C04B 35/495 (2013.01); H01L 41/047 (2013.01); H01L 41/0805 (2013.01); H01L 41/0973 (2013.01); H01L 41/318 (2013.01); H01L 41/39 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/14419 (2013.01); B41J 2202/03 (2013.01); C04B 2235/3201 (2013.01);
Abstract

Provided is a piezoelectric element including a first electrode provided above a substrate, a piezoelectric layer including a plurality of crystal grains containing potassium, sodium, and niobium and provided above the first electrode, and a second electrode provided above the piezoelectric layer. An atom concentration N(atm %) of potassium contained in grain boundaries of the crystal grains and an atom concentration N(atm %) of potassium contained in the crystal grains satisfy a relationship of 1.0<N/N≤2.4.

Find Patent Forward Citations

Koike, Harunobu. (2022). Piezoelectric element and liquid ejecting head (U.S. Patent No. 11309483). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11309483

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

Loading…