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:
May. 07, 2024
Filed:
Dec. 19, 2019
Applicants:
Sanan Japan Technology Corporation, Tokyo, JP;
University of Yamanashi, Yamanashi, JP;
Inventors:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/17 (2006.01); H03H 9/13 (2006.01); H03H 9/54 (2006.01); H03H 9/70 (2006.01);
U.S. Cl.
CPC ...
H03H 9/17 (2013.01); H03H 9/13 (2013.01); H03H 9/54 (2013.01); H03H 9/70 (2013.01);
Abstract
An elastic wave device that excites main vibration of an SH mode includes a piezoelectric layer formed from a piezoelectric material, a carrier substrate, and an IDT electrode formed on the piezoelectric layer. When a wavelength of an elastic wave, which is determined by an electrode cycle P of the IDT electrode, is represented by λ, the piezoelectric layer has a thickness of 0.15λ or more and 1.5λ or less. The carrier substrate has an acoustic anisotropy, and is arranged in a crystal orientation that reduces unnecessary vibrations of an SV mode and a vertical L-mode.