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:
Apr. 25, 2017
Filed:
Jun. 06, 2013
Taiyo Yuden Co., Ltd., Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A Lamb wave device according to an embodiment of the present invention includes a piezoelectric function member and a supporting member. The piezoelectric function member has a piezoelectric substrate, IDT electrodes, and a cutout portion. The IDT electrodes are disposed on the upper surface of the piezoelectric substrate. The cutout portion is formed in the piezoelectric substrate, and includes a step face provided between the upper surface and the lower surface of the piezoelectric substrate. The supporting member has a supporting surface and a cavity. The supporting surface is bonded to the lower surface of the piezoelectric substrate, and is exposed in the cutout portion toward the upper surface of the piezoelectric substrate. The cavity is formed adjacent to the supporting surface, and faces the IDT electrodes through the piezoelectric substrate.