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:
Sep. 15, 2015
Filed:
Mar. 05, 2012
Tomoya Komatsu, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Tetsuya Tsurunari, Osaka, JP;
Joji Fujiwara, Osaka, JP;
Hidekazu Nakanishi, Osaka, JP;
Tomoya Komatsu, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Tetsuya Tsurunari, Osaka, JP;
Joji Fujiwara, Osaka, JP;
Hidekazu Nakanishi, Osaka, JP;
SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD., Kadoma-Shi, JP;
Abstract
An elastic wave element includes a piezoelectric substrate, an IDT electrode, and a first dielectric film. The IDT electrode includes a first bus bar electrode, a second bus bar electrode, first electrode fingers, and second electrode fingers. The piezoelectric substrate includes a bus bar electrode region, an alternately disposed region, and an intermediate region. The first dielectric film is formed in at least a part of the intermediate region, and formed of a medium in which acoustic velocity of a transverse wave propagating in the first dielectric film is lower than acoustic velocity of a main elastic wave in the alternately disposed region.