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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 12588417 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Aug. 19, 2022

Piezoelectric element

Applicants:

Denso Corporation, Kariya-city, JP;

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Mirise Technologies Corporation, Nisshin, JP;

Nisshinbo Micro Devices Inc., Tokyo, JP;

Inventors:

Megumi Suzuki, Nisshin, JP;

Tomoya Joke, Nisshin, JP;

Hideo Yamada, Nisshin, JP;

Shuji Katakami, Tokyo, JP;

Takahide Usui, Tokyo, JP;

Takashi Kakefuda, Tokyo, JP;

Naoki Masumoto, Tokyo, JP;

Assignees:

DENSO CORPORATION, Kariya-city, JP;

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

MIRISE Technologies Corporation, Nisshin, JP;

Nisshinbo Micro Devices Inc., Tokyo, JP;

Attorney:

Posz Law Group, PLC

Primary Examiner:

Bryan P Gordon

Int. Cl.
CPC ...
H01L 41/09 (2006.01); H10N 30/00 (2023.01); H10N 30/20 (2023.01); H10N 30/85 (2023.01); H10N 30/87 (2023.01);
U.S. Cl.
CPC ...
H10N 30/2045 (2023.02); H10N 30/708 (2024.05); H10N 30/85 (2023.02); H10N 30/871 (2023.02);
Abstract

A piezoelectric element includes a support member, a vibrator, a through electrode and a seed layer. The vibrator is disposed on an insulation film of the support member, and includes a piezoelectric film and an electrode coating film electrically connected to the piezoelectric film. The vibrator has a support region and a vibration region. The through electrode is electrically connected to the electrode coating film at the support region, and is disposed in a stacking direction of the support member and the vibrator. Between the piezoelectric film and the insulation film, the seed layer is disposed at a portion of the electrode coating film facing another portion of the electrode coating film connected to the through electrode in the stacking direction. The seed layer is made of material having a lattice constant closer to the piezoelectric film or material easier to cause the piezoelectric film to be self-aligned.

Find Patent Forward Citations

Suzuki, Megumi. (2026). Piezoelectric element (U.S. Patent No. 12588417). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12588417

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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