公开(公告)号：US20250107449A1

公开(公告)日：2025-03-27

申请号：US18889387

申请日：2024-09-19

Applicant: FUJIFILM CORPORATION

Inventor： Tsutomu SASAKI ,  SEIGO NAKAMURA

IPC: H10N30/00 ,  H10N30/20 ,  H10N30/50 ,  H10N30/80 ,  H10N30/853 ,  H10N30/87

Abstract: In a piezoelectric element and an actuator, the piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode provided on the substrate in this order, in which the first piezoelectric film and the second piezoelectric film each have a perovskite-type oxide as a main component, and one of the first piezoelectric film and the second piezoelectric film is an epitaxial film and the other is a uniaxial alignment film.