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. 02, 2019
Filed:
Feb. 03, 2016
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Yuji Miwa, Nagaokakyo, JP;
Hijiri Sumii, Nagaokakyo, JP;
Junpei Yasuda, Nagaokakyo, JP;
Taku Kikuchi, Nagaokakyo, JP;
Hisashi Yamazaki, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An elastic wave device includes a piezoelectric substrate, an IDT electrode, wiring, a pad, an under bump metal, a first dielectric layer, and a second dielectric layer. At least a portion of the IDT electrode includes a first electrically conductive film, at least a portion of the wiring includes a multilayer body including the first electrically conductive film and a second electrically conductive film, and at least a portion of the pad includes the second electrically conductive film. The second dielectric layer covers the region other than the contact region between the second electrically conductive film and the under bump metal. Consequently, the second electrically conductive film is covered with the second dielectric layer and the under bump metal and is not exposed to air.