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:
May. 17, 2022
Filed:
Jul. 26, 2018
Applicant:
Epicmems(xiamen) Co. Ltd, Fujian, CN;
Inventors:
Assignee:
Epicmems(Xiamen) Co. Ltd, Fujian, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/13 (2006.01); H03H 9/02 (2006.01); H03H 3/02 (2006.01); H03H 9/205 (2006.01); H03H 9/54 (2006.01);
U.S. Cl.
CPC ...
H03H 9/131 (2013.01); H03H 3/02 (2013.01); H03H 9/0211 (2013.01); H03H 9/02015 (2013.01); H03H 9/205 (2013.01); H03H 9/54 (2013.01);
Abstract
The present disclosure provides a bulk acoustic wave resonator, a manufacturing method thereof, and a filter, wherein the bulk acoustic wave resonator includes: a substrate; an acoustic reflection unit on the substrate; a piezoelectric stack structure on the acoustic reflection unit; and a pad on the piezoelectric stack structure; wherein the pad has an overlapping region with the acoustic reflection unit. The acoustic wave resonator, the manufacturing method thereof and the filter of the present disclosure can effectively reduce connection resistance of the bulk acoustic wave resonator, thereby reducing insertion loss of the filter.