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. 20, 2022
Filed:
Dec. 10, 2018
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Masafumi Iwaki, Tokyo, JP;
Yoshio Satoh, Tokyo, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/145 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01); H03H 9/25 (2006.01); H01L 41/047 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02818 (2013.01); H03H 9/02559 (2013.01); H03H 9/02637 (2013.01); H03H 9/02866 (2013.01); H03H 9/14541 (2013.01); H03H 9/25 (2013.01); H03H 9/6483 (2013.01); H03H 9/6489 (2013.01); H03H 9/725 (2013.01); H01L 41/0477 (2013.01);
Abstract
An acoustic wave device includes: a Y-cut X-propagation lithium tantalate substrate having a cut angle of 5° or greater and 18° or less; and a grating electrode that is formed of one or more metal films stacked on the lithium tantalate substrate, a number of the one or more metal films being n (n is a natural number), excites an acoustic wave, and meets a condition: where ρi represents a density of each metal film of the one or more metal films, hi represents a film thickness of the each metal film, ρrepresents a density of Mo, and λ represents a pitch.