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. 23, 2018
Filed:
Nov. 06, 2015
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Inventors:
Assignee:
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/17 (2006.01); H03H 9/54 (2006.01); H03H 9/58 (2006.01); H03H 9/02 (2006.01); H03H 3/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/173 (2013.01); H03H 9/02102 (2013.01); H03H 9/587 (2013.01); H03H 9/175 (2013.01); H03H 9/589 (2013.01); H03H 2003/021 (2013.01);
Abstract
A bulk acoustic wave resonator and a filter in which partial thicknesses of protection layers or reflection layers thereof are differently formed are provided. The bulk acoustic wave resonator includes a bulk acoustic wave resonating part comprising a piezoelectric layer, and a reflection layer configured to reflect waves of a resonance frequency generated by the piezoelectric layer based on a signal applied to the bulk acoustic wave resonating part. A thickness of a portion of the reflection layer is different from a thickness of a remaining portion thereof.