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:
Aug. 09, 2022
Filed:
Jan. 11, 2022
Newsonic Technologies, Guangdong, CN;
Gengjiang Wu, Guangdong, CN;
Newsonic Technologies, Guangdong, CN;
Abstract
A bulk acoustic wave resonator and a bulk acoustic wave filter are provided. The bulk acoustic wave resonator includes: a piezoelectric layer; an electrode layer located at both sides of the piezoelectric layer; and an electrode edge frame structure located at an edge of the electrode layer and located at one side of the electrode layer away from the piezoelectric layer. The electrode edge frame structure includes a laminated structure, the laminated structure includes an edge convex layer and a passivation layer laminated in a longitudinal direction, and the passivation layer is located at one side of the edge convex layer away from the piezoelectric layer; in a transverse direction, the laminated structure includes a cantilever member and a convex structure connected with each other; a cantilever gap is arranged between the cantilever member and at least one of the piezoelectric layer and the electrode layer.