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. 06, 2022
Filed:
Mar. 23, 2020
Applicant:
Unictron Technologies Corporation, Hsin-Chu, TW;
Inventors:
Assignee:
Unictron Technologies Corporation, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B06B 1/06 (2006.01); H01L 41/053 (2006.01); H01L 41/187 (2006.01); H01L 41/083 (2006.01);
U.S. Cl.
CPC ...
B06B 1/067 (2013.01); H01L 41/053 (2013.01); H01L 41/083 (2013.01); H01L 41/187 (2013.01);
Abstract
An ultrasonic transducer includes a piezoceramic element, a first acoustic matching layer with extending sidewall attaching the lateral surface of the piezoceramic element, wherein the thickness of the first acoustic matching layer is smaller than ¼ wavelength of an ultrasonic wave emitted by the piezoceramic element in the first acoustic matching layer in an operating frequency of the ultrasonic transducer, and the height of the sidewall of the first acoustic matching layer is larger than 1/20 height of the lateral surface of the piezoceramic element, and a second acoustic matching layer attaching the first acoustic matching layer.