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. 04, 2020
Filed:
May. 18, 2018
Taiyo Yuden Co., Ltd., Tokyo, JP;
Hideyuki Sekine, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
An acoustic wave device includes: a substrate; a first piezoelectric thin film resonator including a first resonance region in which a first lower electrode and a first upper electrode sandwich a first piezoelectric film; a second piezoelectric thin film resonator including a second resonance region in which a second lower electrode and a second upper electrode sandwich a second piezoelectric film; and a wiring layer that is located from an upper surface of the first lower electrode in a first extraction region, in which the first lower electrode is extracted from the first resonance region, to an upper surface of the second upper electrode located in a second extraction region, in which the second upper electrode is extracted from the second resonance region, and has a film thickness on the first lower electrode greater than a film thickness of the second piezoelectric film.