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:
May. 25, 2021
Filed:
Dec. 19, 2017
Seiko Epson Corporation, Tokyo, JP;
Chikara Kojima, Matsumoto, JP;
Koji Ohashi, Matsumoto, JP;
Hikaru Iwai, Matsukawa, JP;
Kanechika Kiyose, Matsumoto, JP;
Abstract
An ultrasonic device includes a vibration portion, a first electrode, a piezoelectric body, and a second electrode which are laminated in this order in a laminate direction, in which an outer circumferential edge of the first electrode is larger than an outer circumferential edge of the piezoelectric body in a plan view across the laminate direction, in which the piezoelectric body includes an active portion that is provided in the vibration portion, and an extraction portion that is connected to the active portion and is provided over the inside and the outside of the vibration portion, in which a width dimension of the extraction portion is smaller than a width dimension of the active portion, and in which the second electrode is provided on the active portion and the extraction portion.