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:
Feb. 01, 2022
Filed:
Oct. 31, 2018
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Chihiro Konoma, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An acoustic wave device includes a piezoelectric substrate and an IDT electrode directly or indirectly disposed on the piezoelectric substrate. The IDT electrode includes first metal layers, a second metal layer disposed on one of the first metal layers, and a third metal layer disposed on the second metal layer. The first, second, and third metal layers include side surfaces, respectively. The side surface includes a first end portion adjacent to the second metal layer. The side surface includes a second end portion adjacent to the second metal layer. In at least a portion of the IDT electrode, a creepage distance stretching from the first end portion to the second end portion via the side surface of the second metal layer is longer than a distance between the first end portion and the second end portion.