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. 19, 2010
Filed:
Dec. 14, 2007
Motoaki Hara, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Masanori Ueda, Kawasaki, JP;
Go Endo, Yokohama, JP;
Motoaki Hara, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Masanori Ueda, Kawasaki, JP;
Go Endo, Yokohama, JP;
Fujitsu Media Devices Limited, Yokohama, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
A film bulk acoustic resonator includes a lower electrode that is formed on a void of a substrate or is formed so that a void is formed between the lower electrode and the substrate, a piezoelectric film that is formed on the lower electrode, an upper electrode that is formed on the piezoelectric film so as to have a resonance region facing the lower electrode through the piezoelectric film, a support region that is provided around the resonance region, has a width of 0.35 times to 0.65 times a wavelength of a wave propagating in a lateral direction, and transmits the wave passes, and an adjacent region that is provided around the support region and blocks the wave.