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:
Mar. 10, 2020
Filed:
Apr. 06, 2017
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Inventor:
Jang Ho Park, Suwon-si, KR;
Assignee:
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 3/08 (2006.01); H01L 41/047 (2006.01); H01L 41/29 (2013.01);
U.S. Cl.
CPC ...
H03H 9/64 (2013.01); H01L 41/0477 (2013.01); H01L 41/29 (2013.01); H03H 3/08 (2013.01);
Abstract
A surface acoustic wave (SAW) filter device includes: a first layer disposed on a substrate; an inter-digital transducer (IDT) electrode layer disposed on the first layer; a second layer covering the IDT electrode layer and the first layer; and an overlay layer covering the second layer, wherein the first layer includes any one or any combination of any two or more of a metal layer, a metal oxide layer, and an oxide layer.