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:
Nov. 05, 2013
Filed:
Dec. 22, 2010
Takashi Inoue, Osaka, JP;
Hidekazu Nakanishi, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Shun-ichi Seki, Hyogo, JP;
Shoji Okamoto, Osaka, JP;
Takashi Inoue, Osaka, JP;
Hidekazu Nakanishi, Osaka, JP;
Hiroyuki Nakamura, Osaka, JP;
Shun-ichi Seki, Hyogo, JP;
Shoji Okamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An acoustic wave device includes a piezoelectric substrate, an IDT electrode provided on the piezoelectric substrate, a dielectric layer provided so as to cover the IDT electrode, and a first stress relaxation layer provided on the dielectric layer. Furthermore, the acoustic wave device includes an extraction electrode connected to the IDT electrode and extracted onto the first stress relaxation layer, and a bump provided on the extraction electrode. An elastic modulus of the first stress relaxation layer is smaller than that of the dielectric layer.