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. 04, 2020
Filed:
Dec. 18, 2018
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Inventors:
Tae Kyung Lee, Suwon-si, KR;
In Young Kang, Suwon-si, KR;
Ran Hee Shin, Suwon-si, KR;
Jin Suk Son, Suwon-si, KR;
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 3/02 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/171 (2013.01); H03H 3/02 (2013.01); H03H 9/02015 (2013.01); H03H 9/173 (2013.01); H03H 9/54 (2013.01);
Abstract
A bulk acoustic resonator includes a substrate, a first electrode disposed above the substrate, a piezoelectric body disposed on the first electrode and including a plurality of piezoelectric layers each including aluminum nitride with a doping material, and a second electrode disposed on the piezoelectric body, where at least one of the piezoelectric layers is a compressive piezoelectric layer formed under compressive stress.