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:
Dec. 12, 2023
Filed:
Sep. 14, 2022
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventor:
Hideki Iwamoto, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/05 (2006.01); H03H 9/02 (2006.01); H03H 9/72 (2006.01); H03H 9/145 (2006.01); H03H 9/25 (2006.01);
U.S. Cl.
CPC ...
H03H 9/058 (2013.01); H03H 9/02566 (2013.01); H03H 9/02574 (2013.01); H03H 9/05 (2013.01); H03H 9/145 (2013.01); H03H 9/25 (2013.01); H03H 9/72 (2013.01);
Abstract
An elastic wave device includes a support substrate made of silicon, a piezoelectric film disposed directly or indirectly on the support substrate, and an interdigital transducer electrode disposed on one surface of the piezoelectric film. A higher-order mode acoustic velocity of propagation through the piezoelectric film is equal or substantially equal to an acoustic velocity V=(V)of propagation through silicon or higher than the acoustic velocity V, where Vis specified by Vamong solutions V, V, and Vwith respect to x derived from Ax+Bx+Cx+D=0.