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:
Apr. 15, 2014
Filed:
May. 24, 2010
Hidekazu Nakanishi, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Tetsuya Tsurunari, Osaka, JP;
Rei Goto, Osaka, JP;
Joji Fujiwara, Osaka, JP;
Hidekazu Nakanishi, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Tetsuya Tsurunari, Osaka, JP;
Rei Goto, Osaka, JP;
Joji Fujiwara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An acoustic wave resonator includes a piezoelectric body, an IDT electrode for exciting an acoustic wave with wavelength λ, and a dielectric thin film provided so as to cover the IDT electrode. The IDT electrode includes a bus bar electrode region, a dummy electrode region, and an IDT cross region in order from outside. The film thickness of the dielectric thin film above at least one of the bus bar electrode region and the dummy electrode region is smaller than that above the IDT cross region by 0.1λ to 0.25λ. This configuration provides an acoustic wave resonator that reduces transverse-mode spurious emission.