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:
Mar. 02, 2021
Filed:
Apr. 22, 2019
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 3/10 (2006.01); H03H 9/145 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01); B23K 26/53 (2014.01); B23K 26/00 (2014.01); H03H 9/25 (2006.01); H01L 41/338 (2013.01); H01L 41/312 (2013.01);
U.S. Cl.
CPC ...
H03H 9/02866 (2013.01); B23K 26/0006 (2013.01); B23K 26/53 (2015.10); H03H 3/10 (2013.01); H03H 9/02559 (2013.01); H03H 9/02637 (2013.01); H03H 9/02834 (2013.01); H03H 9/145 (2013.01); H03H 9/25 (2013.01); H03H 9/6483 (2013.01); H03H 9/6489 (2013.01); H03H 9/725 (2013.01); H01L 41/312 (2013.01); H01L 41/338 (2013.01);
Abstract
An acoustic wave resonator includes: a piezoelectric substrate; a pair of comb-shaped electrodes that is located on the piezoelectric substrate and excites an acoustic wave, each of the pair of comb-shaped electrodes including a plurality of electrode fingers; and a polycrystalline substrate that is located at an opposite side of the piezoelectric substrate from a surface on which the pair of comb-shaped electrodes is located, an average particle size of the polycrystalline substrate being equal to or less than 66 times an average pitch of the plurality of electrode fingers.