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. 21, 2022
Filed:
Feb. 27, 2018
Canon Medical Systems Corporation, Otawara, JP;
Hiroyuki Shikata, Nasushiobara, JP;
CANON MEDICAL SYSTEMS CORPORATION, Otawara, JP;
Abstract
An ultrasonic transducer according to an embodiment includes a piezoelectric layer, a first electrode, a second electrode, a base layer, and a substrate. The first electrode is disposed in a front side of the piezoelectric layer and extends along a first direction. The second electrode is disposed in a back side of the piezoelectric layer and extends along a second direction intersecting with the first direction. The base layer is disposed in a back side of the second electrode. The substrate is disposed in a back side of the base layer. Each of the first electrode and the second electrode includes an overlap portion where the first electrode and the second electrode overlap each other when viewed from the front side of the piezoelectric layer. The substrate is provided with a cavity on a back side of the overlap portion on each of the first electrode and the second electrode. Each of the first electrode and the second electrode has the width of the overlap portion that is larger than the width of a peripheral portion of the overlap portion.