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:
Jun. 15, 2010
Filed:
May. 16, 2008
Shinji Taniguchi, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Tsuyoshi Yokoyama, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Motoaki Hara, Kawasaki, JP;
Go Endo, Yokohama, JP;
Yasuyuki Saitou, Yokohama, JP;
Masanori Ueda, Kawasaki, JP;
Shinji Taniguchi, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Tsuyoshi Yokoyama, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Motoaki Hara, Kawasaki, JP;
Go Endo, Yokohama, JP;
Yasuyuki Saitou, Yokohama, JP;
Masanori Ueda, Kawasaki, JP;
Fujitsu Media Devices Limited, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A piezoelectric thin-film resonator includes: a lower electrode that is formed on a substrate; a piezoelectric film that is formed on the substrate and the lower electrode; an upper electrode that is formed on the piezoelectric film, with a portion of the piezoelectric film being interposed between the lower electrode and the upper electrode facing each other; and an additional film that is formed on the substrate on at least a part of the outer periphery of the lower electrode at the portion at which the lower electrode and the upper electrode face each other, with the additional film being laid along the lower electrode.