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:
May. 05, 2020
Filed:
Oct. 05, 2016
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Inventor:
Yuji Toyota, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 3/08 (2006.01); H03H 9/64 (2006.01); H03H 9/02 (2006.01); H03H 9/13 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02535 (2013.01); H03H 3/08 (2013.01); H03H 9/02992 (2013.01); H03H 9/131 (2013.01); H03H 9/64 (2013.01);
Abstract
A surface acoustic wave device includes a piezoelectric substrate, an IDT electrode that is provided on the piezoelectric substrate and includes combtooth-shaped electrode fingers, and a wiring electrode that is connected to the IDT electrode. A line width of the electrode fingers at a lower edge thereof and a line width of the electrode fingers at an upper edge thereof in a cross section of the electrode fingers that is perpendicular or substantially perpendicular to a longitudinal direction of the electrode fingers is smaller than a maximum line width of the electrode fingers.