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. 22, 2008
Filed:
Jul. 15, 2004
Yasuo Ebuchi, Kanagawa, JP;
Takako Motai, Kanagawa, JP;
Kenya Sano, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A film bulk acoustic resonator, includes first to fourth insulator patterns disposed apart from each other. The third and fourth insulator patterns are disposed opposite the second and first insulator patterns in relation to the first and second insulating patterns, respectively. A bottom conductive layer is disposed above the first and third insulator patterns spreading from a region between the first and second insulator patterns to the third insulator pattern. A piezoelectric film is provided on the bottom conductive layer, disposed above the region between the first and second insulating patterns. A top conductive layer is facing the bottom conductive layer so as to sandwich the piezoelectric film, spreading from the region between the first and second insulator patterns to the fourth insulator pattern.