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:
Oct. 06, 2009
Filed:
Mar. 02, 2007
Shoichiro Yamaguchi, Ichinomiya, JP;
Yukihisa Osugi, Nagoya, JP;
Tomoyoshi Tai, Nagoya, JP;
Masahiro Sakai, Nagoya, JP;
Shoichiro Yamaguchi, Ichinomiya, JP;
Yukihisa Osugi, Nagoya, JP;
Tomoyoshi Tai, Nagoya, JP;
Masahiro Sakai, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
There is provided a piezoelectric thin film device with its frequency impedance characteristic unsusceptible to spuriousness. A film bulk acoustic resonator has a configuration where an adhesive layer, a lower electrode, a piezoelectric thin film, and an upper electrode are laminated in this order on a support substrate. A drive section of the upper electrode and a drive section of the lower electrode are opposed to each other with the piezoelectric thin film interposed therebetween. The respective drive section has a slender two-dimensional shape, with magnitude in its longitudinal direction being not less than twice, more desirably four times, and further desirably ten times, as large as magnitude in its widthwise direction.