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:
Sep. 27, 2022
Filed:
Nov. 21, 2019
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An ultrasonic sensor includes an opening portion, vibrating plate covering the opening portion, piezoelectric element overlapping with the opening portion, and a coupling electrode coupled to the piezoelectric element, extended from a position overlapping the opening portion to a position not overlapping the opening portion, and having a line width smaller than a width of the piezoelectric element. The piezoelectric has a first and second line portion, and a corner portion coupling the first and second line portions, when an intersection point connects a center of gravity of the piezoelectric and the corner portion with a virtual circle inscribed in the outline of the piezoelectric is a first intersection point of a tangent line. The first intersection point with the first and second line portions are a second and third intersection points, the coupling electrode coupled to a corner portion from the second intersection point to the third intersection point.