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. 23, 2022
Filed:
Mar. 18, 2019
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Tae Hun Lee, Suwon-si, KR;
Tae Yoon Kim, Suwon-si, KR;
Moon Chul Lee, Suwon-si, KR;
Chang Hyun Lim, Suwon-si, KR;
Nam Jung Lee, Suwon-si, KR;
Il Han Lee, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
A bulk-acoustic wave resonator includes a substrate, a first layer, a second layer, a membrane layer, and a resonance portion. The substrate includes a substrate protection layer. The first layer is disposed on the substrate protection layer. The second layer is disposed outside of the first layer. The membrane layer forms a cavity with the substrate protection layer and the first layer. The resonance portion is disposed on the membrane layer. Either one or both of the substrate protection layer and the membrane layer includes a protrusion disposed in the cavity.