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.:
Date of Patent:
Nov. 12, 2024
Filed:
Dec. 21, 2022
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Yasuaki Hamada, Nagano, JP;
Tomohiro Sakai, Nagano, JP;
Toshihiro Shimizu, Fujimi-machi, JP;
Masao Nakayama, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); H10N 30/00 (2023.01); H10N 30/20 (2023.01); H10N 30/853 (2023.01);
U.S. Cl.
CPC ...
B41J 2/14201 (2013.01); H10N 30/2047 (2023.02); H10N 30/708 (2024.05); H10N 30/8542 (2023.02); B41J 2002/14306 (2013.01);
Abstract
A piezoelectric substrate includes: a substrate; a first electrode formed on the substrate; and a piezoelectric layer formed on the first electrode and containing potassium, sodium, and niobium. A full width at half maximum of an X-ray intensity peak on a plane (100) of the piezoelectric layer in a Psi axis-direction scan result of an X-ray diffraction measurement in which a surface of the piezoelectric layer is irradiated with X-rays at an angle of 54.74° from a direction perpendicular to the surface is more than 0° and 1.2° or less.