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:
Jan. 02, 2024
Filed:
Aug. 20, 2019
Skyworks Filter Solutions Japan Co., Ltd., Kadoma, JP;
Tomohiro Iwasaki, Otsu, JP;
Hiroyuki Nakamura, Osaka-Fu, JP;
Toru Yamaji, Nagaokakyou, JP;
Mitsunori Miyanari, Osaka-Fu, JP;
Masahiro Yasumi, Osaka-Fu, JP;
Shoji Okamoto, Osaka-Fu, JP;
SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD., Kadoma, JP;
Abstract
A surface acoustic wave device comprises a substrate and an interdigital transducer (IDT) electrode disposed on the substrate. The IDT electrode includes a lower electrode layer having a lower surface in contact with an upper surface of the substrate and an upper electrode layer having a lower surface defining a base in contact with an upper surface of the lower electrode layer. Side surfaces of the lower electrode layer are substantially perpendicular to the upper surface of the substrate. Side surfaces of the upper electrode layer are disposed at an acute angle relative to the upper surface of the substrate.