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. 16, 2021
Filed:
Jan. 25, 2018
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventors:
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/145 (2006.01); H03H 9/02 (2006.01); H03H 9/17 (2006.01); H03H 9/25 (2006.01); H03H 9/05 (2006.01); H03H 3/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/145 (2013.01); H03H 3/02 (2013.01); H03H 9/02228 (2013.01); H03H 9/02574 (2013.01); H03H 9/05 (2013.01); H03H 9/173 (2013.01); H03H 9/175 (2013.01); H03H 9/25 (2013.01); H03H 2003/025 (2013.01);
Abstract
An elastic wave device includes an interdigital transducer electrode including electrode fingers provided on a first principal surface of a piezoelectric thin film. A conductive layer is provided on a second principal surface of the piezoelectric thin film. An elastic wave propagates in the piezoelectric thin film in an S0 mode of a plate wave, and a piezoelectric thin film portion in a region below spaces between the electrode fingers of the interdigital transducer electrode is displaced by a greater amount than each electrode finger and a piezoelectric thin film portion in a region below each electrode finger.