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:
Feb. 27, 2024
Filed:
Dec. 28, 2021
Seiko Epson Corporation, Tokyo, JP;
Yasushi Yamazaki, Azumino, JP;
Daisuke Nagano, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An active portion of a piezoelectric actuator includes a first region provided in a region opposed to a recess and extending in a first direction, and a second region provided in a region corresponding to a central part in the first direction of the recess, and being configured such that a laminated body including the active portion and a vibration plate has a thickness larger than a thickness of a portion corresponding to the first region and that deformation of the second region is suppressed as compared to deformation of the first region when a voltage is applied between a first electrode and a second electrode.