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:
Sep. 29, 2026
Filed:
Mar. 28, 2023
Fujifilm Corporation, Tokyo, JP;
Seigo Nakamura, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
There are provided a substrate with a piezoelectric film and a piezoelectric element, including on a substrate in the following order, a lower electrode layer and a piezoelectric film, in which in a case where B is denoted as a B site element in a perovskite-type structure, the piezoelectric film includes, a first region containing a perovskite-type oxide represented by General Formula (1), PbBO(1), here 1≤δ≤1.5, and a second region consisting of the same elements as elements in the first region and containing an oxide represented by General Formula (2), PbBO(2), here δ/3≤α<δ, and the second region is provided on an outermost layer of the piezoelectric film opposite to the lower electrode layer.