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:
Oct. 20, 2020
Filed:
Mar. 18, 2019
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Yoon Sok Park, Suwon-si, KR;
Won Kyu Jeung, Suwon-si, KR;
Tah Joon Park, Suwon-si, KR;
Dae Hun Jeong, Suwon-si, KR;
Sang Uk Son, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
An acoustic wave filter device includes resonance portions, first and second metal pads. The resonance portions each includes a lower electrode disposed on a substrate, a piezoelectric layer disposed on at least a portion of the lower electrode, and an upper electrode disposed on at least a portion of the piezoelectric layer. The first metal pads are connected to one of the upper electrode and the lower electrode of a corresponding resonance portion among the resonance portions. The second metal pads are disposed outwardly of an active region and connected to the other one of the upper electrode and the lower electrode of adjacent resonant portions among the resonance portions. A ring portion is disposed outwardly of the active region in which the lower electrode, the piezoelectric layer, and the upper electrode overlap is disposed only on a portion of any one of the first and second metal pads.