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:
Jun. 23, 2026
Filed:
Nov. 18, 2022
Seiko Epson Corporation, Tokyo, JP;
Masayoshi Yamada, Chino, JP;
Eiji Osawa, Matsumoto, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A piezoelectric device includes a first substrate including a first surface on which piezoelectric elements and a common terminal coupled to the piezoelectric elements are placed, a second substrate including a second surface on which a common connecting terminal coupled to a control circuit is placed, a third substrate placed between the first substrate and the second substrate and including a third surface joined to the first surface and a fourth surface facing the second surface, and bonding portions bonding the second substrate and the third substrate by an adhesive, wherein the third substrate includes a first through hole penetrating from the third surface to the fourth surface and a first through electrode provided in the first through hole and coupled to the common terminal, the common connecting terminal is coupled to the first through electrode and electrically coupled to the common terminal via the first through electrode, and the second substrate includes a wall suppressing an outflow of the adhesive on the second surface facing the third substrate.