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. 19, 2016
Filed:
Jul. 26, 2012
Yasuhito Fujii, Kyoto, JP;
Satoru Iwasaki, Kyoto, JP;
Harumi Hayashi, Kyoto, JP;
Kenji Yamakawa, Kyoto, JP;
Yasuhito Fujii, Kyoto, JP;
Satoru Iwasaki, Kyoto, JP;
Harumi Hayashi, Kyoto, JP;
Kenji Yamakawa, Kyoto, JP;
Kyocera Corporation, Tokyo, JP;
Abstract
A piezoelectric vibration element capable of reducing occurrence of unnecessary vibration, and a piezoelectric vibration device and a portable terminal using the same are disclosed. The piezoelectric vibration element includes a plurality of electrode layers and a plurality of piezoelectric layers being stacked along a first direction, the piezoelectric vibration element having two surfaces that face each other to be at intervals in the first direction, and vibrating in bending mode in the first direction with an amplitude varying along a second direction perpendicular to the first direction according to input of an electric signal, one of the two surfaces having such a shape that a central portion thereof in a third direction perpendicular to the first direction and the second direction protrudes as compared with opposite end portions thereof in the third direction.