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:
Jul. 04, 2017
Filed:
Mar. 24, 2015
Taiyo Yuden Co., Ltd., Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A surface acoustic wave device includes: comb electrodes that are provided on a piezoelectric substrate, respectively has a plurality of electrode fingers, a plurality of dummy electrode fingers and a bus bar, edges of the electrode fingers of one of the comb electrodes facing the dummy electrode fingers of the other; and an added film that is provided at least under the bus bar of the comb electrodes and under the electrode fingers and the dummy electrode fingers in a first region and is not provided in a crossing region where the electrode fingers of the one of the comb electrodes and the electrode fingers of the other cross each other, the first region being a region between front edges of the dummy electrodes and edges of the dummy electrodes connected to the bus bar and extending in an alignment direction of the electrode fingers.