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 12575327 B1

Date of Patent:

Mar. 10, 2026

Filed:

Apr. 11, 2022

Piezoelectric film capable of preventing short circuit caused by electrode protruding from piezoelectric layer, and method of producing piezoelectric film

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Yusuke Kagawa, Minamiashigara, JP;

Kazuo Hiraguchi, Minamiashigara, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Emily P Pham

Int. Cl.

CPC ...

H10N 30/00 (2023.01); H10N 30/85 (2023.01); H10N 30/87 (2023.01); H10N 30/88 (2023.01);

U.S. Cl.

CPC ...

H10N 30/704 (2024.05); H10N 30/852 (2023.02); H10N 30/872 (2023.02); H10N 30/883 (2023.02);

Abstract

An object of the present invention is to provide a piezoelectric film capable of preventing a short circuit caused by electrodes protruding from a piezoelectric layer in the piezoelectric film having electrode layers and protective layers on both surfaces of the piezoelectric layer, and a method of producing the piezoelectric film. The object can be achieved by the piezoelectric film that includes a laminated film including a piezoelectric layer, an electrode layer provided on each of both surfaces of the piezoelectric layer, and a protective layer covering the electrode layer, and an insulating end surface coating layer which covers at least a part of an end surface of the laminated film.

Find Patent Forward Citations