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, 2020
Filed:
Sep. 01, 2017
Taiyo Yuden Co., Ltd., Tokyo, JP;
Takeshi Sakashita, Tokyo, JP;
Jun Tsutsumi, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
An acoustic wave device includes: a piezoelectric substrate; a comb-shaped electrode located on the piezoelectric substrate; a wiring layer located on the piezoelectric substrate and electrically connected with the comb-shaped electrode; a first insulating film located on the piezoelectric substrate, the first insulating film covering the comb-shaped electrode, having an aperture on the wiring layer, and being thicker than the comb-shaped electrode; a second insulating film covering an upper surface of the first insulating film and at least a part of a side surface of the first insulating film in the aperture and having a higher moisture resistance than the first insulating film; and a pad being in contact with the wiring layer exposed by the aperture.