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:
Feb. 19, 2019
Filed:
Oct. 05, 2016
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Inventor:
Won Kyu Jeung, Suwon-si, KR;
Assignee:
Samsung Electo-Mechanics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/54 (2006.01); H03H 3/04 (2006.01); H03H 9/205 (2006.01); H03H 3/02 (2006.01); H03H 9/58 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/54 (2013.01); H03H 3/02 (2013.01); H03H 3/04 (2013.01); H03H 9/02007 (2013.01); H03H 9/205 (2013.01); H03H 9/587 (2013.01); H03H 2003/028 (2013.01); H03H 2003/0421 (2013.01); H03H 2003/0428 (2013.01); H03H 2009/02173 (2013.01);
Abstract
An acoustic wave filter includes a substrate having voids formed therein; a first resonator disposed on one or more of the voids, and a second resonator disposed on other of the voids. A first trimming layer is provided in the first resonator, and a second trimming layer is provided in the second resonator. The second trimming layer is formed of a material having an etching rate for a given etchant different from that of the first trimming layer.