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:
Jul. 08, 2025
Filed:
Jan. 13, 2023
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventors:
Takashi Yamane, Nagaokakyo, JP;
Yuta Ishii, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/58 (2006.01); H03H 9/13 (2006.01); H03H 9/205 (2006.01); H03H 9/60 (2006.01);
U.S. Cl.
CPC ...
H03H 9/587 (2013.01); H03H 9/133 (2013.01); H03H 9/205 (2013.01); H03H 9/605 (2013.01);
Abstract
An acoustic wave device includes a support substrate, a piezoelectric layer on the support substrate, functional electrodes on the piezoelectric layer, and first and second electrode films positioned on the piezoelectric layer to face each other and having different potentials from each other. A thickness of the piezoelectric layer in at least a portion of a first region overlapping the first electrode film in plan view is different from a thickness of the piezoelectric layer in at least a portion of a second region not overlapping the first electrode film in plan view.