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:
Aug. 01, 2017
Filed:
Jul. 01, 2013
Daishinku Corporation, Hyogo, JP;
Naoki Kohda, Hyogo, JP;
Daishinku Corporation, Hyogo, JP;
Abstract
A piezoelectric vibration piece has an inverted mesa-type structure, comprising a thinned portion serving as a vibration region at a central part of a piezoelectric plate; and a thickened portion formed all along or partly along perimeter of the thinned portion to reinforce the thinned portion. In the piezoelectric vibration piece, contact metals including a large number of discrete metallic thin films are provided on the whole surfaces of the piezoelectric plate. A piezoelectric vibration device comprises the piezoelectric vibration piece which is housed in a package, wherein extraction electrodes of the piezoelectric vibration piece are connected to internal terminals of the package through a conductive adhesive. These structural and technical advantages prevent undesirable flowage of the conductive adhesive before thermal curing. As a result, the piezoelectric vibration piece and the piezoelectric vibration device comprising the same successfully attain excellent vibration characteristics.