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:
Feb. 04, 2020
Filed:
Oct. 11, 2018
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Inventor:
Akira Konno, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/145 (2006.01); H03H 9/64 (2006.01); H03H 9/25 (2006.01); H03H 9/02 (2006.01); H01L 41/047 (2006.01); H01L 41/053 (2006.01);
U.S. Cl.
CPC ...
H03H 9/145 (2013.01); H03H 9/02559 (2013.01); H03H 9/02818 (2013.01); H03H 9/02834 (2013.01); H03H 9/02937 (2013.01); H03H 9/25 (2013.01); H03H 9/6436 (2013.01); H03H 9/6489 (2013.01); H01L 41/0477 (2013.01); H01L 41/0533 (2013.01);
Abstract
An elastic wave device includes an IDT electrode and an insulating film on a piezoelectric substrate. Above an intersection region of the IDT electrode, when one end in an elastic-wave propagation direction is a first end portion and the other end in the elastic-wave propagation direction is a second end portion, the thickness of the insulating film is decreased or increased towards a center in the elastic-wave propagation direction from the first end portion and the second end portion.