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:
Jun. 21, 2022
Filed:
Oct. 04, 2017
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventor:
Mari Saji, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H01L 41/187 (2006.01); H01L 41/277 (2013.01); H03H 9/25 (2006.01); H01L 41/08 (2006.01); H01L 41/253 (2013.01); C30B 29/30 (2006.01); H03H 9/145 (2006.01);
U.S. Cl.
CPC ...
H01L 41/277 (2013.01); C30B 29/30 (2013.01); H01L 41/081 (2013.01); H01L 41/1873 (2013.01); H01L 41/253 (2013.01); H03H 9/02559 (2013.01); H03H 9/02574 (2013.01); H03H 9/02834 (2013.01); H03H 9/14541 (2013.01); H03H 9/25 (2013.01);
Abstract
An elastic wave device includes a piezoelectric substrate, an IDT electrode including a first electrode layer located on the piezoelectric substrate and including one of Mo and W as a main component and a second electrode layer laminated on the first electrode layer and including Cu as a main component, and a dielectric film located on the piezoelectric substrate and covering the IDT electrode. The piezoelectric substrate is made of lithium niobate. The dielectric film is made of silicon oxide. The elastic wave device utilizes Rayleigh waves propagating along the piezoelectric substrate.