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:
Sep. 01, 2026
Filed:
Jul. 28, 2023
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Takuro Okada, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An acoustic wave device includes a piezoelectric film directly or indirectly provided on a high acoustic-velocity material layer, a dielectric film on the piezoelectric film, and an IDT electrode on the dielectric film. The dielectric film is made of one of silicon oxide, silicon nitride, alumina, and amorphous silicon. When a wavelength determined based on an electrode finger pitch of the IDT electrode is denoted as λ, a duty of the IDT electrode is denoted as y, and a film thickness normalized by the wavelength λ of the dielectric film is denoted as x (%), x and y are in each range of Table 1, Table 2, Table 3, or Table 4 below depending on a material of the dielectric film.