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:
Jan. 14, 2025
Filed:
Mar. 04, 2022
Taiyo Yuden Co., Ltd., Tokyo, JP;
Shinji Taniguchi, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
An acoustic wave device includes a substrate, one or more acoustic layers provided on the substrate, the one or more acoustic layers each being an air gap or an acoustic mirror, the acoustic mirror having a structure in which at least two layers having different acoustic characteristics are stacked, lower electrodes provided on the substrate, the lower electrodes sharing one acoustic layer of the one or more acoustic layers between the substrate and the lower electrodes, the lower electrodes being arranged to be separated from each other across a groove, an insulating film provided in the groove on the one acoustic layer, a piezoelectric film continuously provided on the lower electrodes and the groove, and an upper electrode continuously provided on the piezoelectric film to form resonators by sandwiching the piezoelectric film between the upper electrode and the lower electrodes.