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. 25, 2018
Filed:
Nov. 04, 2015
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Inventors:
Ryo Otsubo, Nagaokakyo, JP;
Koji Yamamoto, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/145 (2006.01); H03H 3/02 (2006.01); H03H 3/10 (2006.01); H03H 9/10 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02992 (2013.01); H03H 3/02 (2013.01); H03H 3/10 (2013.01); H03H 9/02574 (2013.01); H03H 9/14541 (2013.01); H03H 9/1071 (2013.01);
Abstract
An IDT electrode of an elastic wave device includes a first electrode film made of Al or mainly containing Al, a second electrode film with a density larger than that of the first electrode film, an anti-diffusion film which is located between the first electrode film and the second electrode film and which significantly reduces or prevents interdiffusion between the first electrode film and the second electrode film, and a first Ti film located between the first electrode film and the anti-diffusion film, to diffuse a diffusion material into the first electrode film.