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:
Jan. 27, 2015
Filed:
Mar. 27, 2012
Tsuyoshi Yokoyama, Tokyo, JP;
Shinji Taniguchi, Tokyo, JP;
Tokihiro Nishihara, Tokyo, JP;
Masanori Ueda, Tokyo, JP;
Tsuyoshi Yokoyama, Tokyo, JP;
Shinji Taniguchi, Tokyo, JP;
Tokihiro Nishihara, Tokyo, JP;
Masanori Ueda, Tokyo, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
An acoustic wave device includes a main resonator and a sub resonator each having a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on an upper side of the piezoelectric film. A frequency control film is provided on an upper side of a resonance area in which the upper electrode and the lower electrode face each other in at least one of the main resonator and the sub resonator. The frequency control film has multiple convex patterns, and the convex patterns are arranged with a common pitch for spurious adjustment and with different areas in the main resonator and the sub resonator.