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. 16, 2013
Filed:
Aug. 10, 2011
Shoji Okamoto, Osaka, JP;
Takashi Inoue, Osaka, JP;
Takahiro Sato, Osaka, JP;
Rei Goto, Osaka, JP;
Hidehito Shimizu, Osaka, JP;
Toru Jibu, Hyogo, JP;
Shoji Okamoto, Osaka, JP;
Takashi Inoue, Osaka, JP;
Takahiro Sato, Osaka, JP;
Rei Goto, Osaka, JP;
Hidehito Shimizu, Osaka, JP;
Toru Jibu, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An acoustic wave device includes a piezoelectric substrate, an interdigital transducer (IDT) electrode, a reflector electrode, and a dummy electrode. The IDT electrode includes electrode fingers extending in a predetermined direction. The reflector electrode faces the IDT electrode across a gap. The dummy electrode is situated on a straight line extending in the predetermined direction through the gap. At least one of the distance between the dummy electrode and the IDT electrode and the distance between the dummy electrode and the reflector electrode is larger than the distance between the IDT electrode and the reflector electrode. This acoustic wave device prevents a short circuit between the IDT electrode and the reflector electrode, thereby avoiding a decrease in its yield.