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:
Oct. 24, 2023
Filed:
Jun. 04, 2021
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Masashi Omura, Nagaokakyo, JP;
Tetsuya Kimura, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An acoustic wave device includes a supporting substrate, an acoustic reflection layer, a piezoelectric layer, and an IDT electrode. At least one of a high acoustic impedance layer and a low acoustic impedance layer is a conductive layer in the acoustic reflection layer. When a wavelength of an acoustic wave determined by an electrode finger pitch of the IDT electrode is λ and a region between an envelope of tips of first electrode fingers and an envelope of tips of second electrode fingers is an intersecting region, the conductive layer overlaps at least the intersecting region in plan view in a thickness direction of the supporting substrate, and a distance from the tips of the first electrode fingers to an end of the conductive layer in a direction in which the first electrode fingers extend is more than 0 and not more than about 12λ.