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. 11, 2005
Filed:
Dec. 26, 2002
Joo Ho Lee, Kyungki-do, KR;
Joo Ho Lee, Kyungki-do, KR;
Abstract
Disclosed are a film bulk acoustic resonator (FBAR) device and a method for fabricating the film bulk acoustic resonator (FBAR) device. The film bulk acoustic resonator (FBAR) device comprises a membrane layer having a plurality of active regions and provides different resonant frequencies by providing different thicknesses of the active regions of series resonators and shunt resonators, and by controlling the thicknesses, respectively. A plurality of the film bulk acoustic resonator (FBAR) devices having different resonant frequencies are manufactured on a substrate, thereby simultaneously manufacturing a transmission filter and a reception filter on the same substrate. Further, the film bulk acoustic resonator (FBAR) device has a stable structure and excellent characteristics.