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. 24, 2019
Filed:
Mar. 16, 2018
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Inventors:
Akira Konno, Nagaokakyo, JP;
Masakazu Mimura, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 3/10 (2006.01); H03H 9/02 (2006.01); H03H 9/10 (2006.01); H03H 9/25 (2006.01); H03H 9/64 (2006.01); H04B 1/10 (2006.01); H03H 9/145 (2006.01); H01L 41/047 (2006.01);
U.S. Cl.
CPC ...
H04B 1/1036 (2013.01); H03H 3/10 (2013.01); H03H 9/02559 (2013.01); H03H 9/02637 (2013.01); H03H 9/1092 (2013.01); H03H 9/145 (2013.01); H03H 9/14541 (2013.01); H03H 9/25 (2013.01); H03H 9/6406 (2013.01); H03H 9/6489 (2013.01); H01L 41/0477 (2013.01);
Abstract
An elastic wave device includes a LiNbOsubstrate, an IDT electrode provided on the LiNbOsubstrate, and a dielectric film that is provided on the LiNbOsubstrate so as to cover the IDT electrode and includes a projection on an upper surface of the stated dielectric film. A main mode of an elastic wave excited by the IDT electrode uses a Rayleigh wave, and a thickness of the IDT electrode is set such that a frequency at which a response by an SH wave appears is lower than a resonant frequency of the Rayleigh wave.