The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

H10N 30/00 (2023.01); B41J 2/045 (2006.01); H10N 30/076 (2023.01); H10N 30/077 (2023.01); H10N 30/082 (2023.01); H10N 30/87 (2023.01); H10N 30/88 (2023.01);

U.S. Cl.

CPC ...

H10N 30/704 (2024.05); B41J 2/04581 (2013.01); H10N 30/076 (2023.02); H10N 30/077 (2023.02); H10N 30/082 (2023.02); H10N 30/871 (2023.02); H10N 30/883 (2023.02);

Abstract

Provided is a piezoelectric element that includes a substrate having a lower electrode, a piezoelectric film, and an upper electrode, in that order, and an insulating film that covers at least a side surface of the piezoelectric film, wherein one of the side surfaces of the piezoelectric film has a plurality of step portions, each of the plurality of step portions has a first side surface and a second side surface, an angle of inclination of the first side surface with respect to an upper surface of the substrate is different from an angle of inclination of the second side surface with respect to the upper surface of the substrate, and an angle between the first side surface and the second side surface is 90° or more.

Find Patent Forward Citations

Midorikawa, Chihiro. (2026). Piezoelectric element, method for manufacturing piezoelectric element, and liquid ejection head (U.S. Patent No. 12757636). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12757636

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