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:
Oct. 06, 2015
Filed:
Jul. 28, 2010
Applicant:
Shigenobu Nakamura, Kirishima, JP;
Inventor:
Shigenobu Nakamura, Kirishima, JP;
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/083 (2006.01); F02M 51/06 (2006.01); H01L 41/273 (2013.01); F02M 63/02 (2006.01);
U.S. Cl.
CPC ...
H01L 41/0838 (2013.01); F02M 51/0603 (2013.01); H01L 41/273 (2013.01); F02M 63/0225 (2013.01); Y10T 29/42 (2015.01);
Abstract
A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated and a stress relaxing layer is disposed at part of portions between the piezoelectric layers, and an external electrode that is bonded to a side face of the stacked body so as to make electrical connection with the internal electrode layers, the internal electrode layers being not exposed on the side face of the stacked body, but the stress relaxing layer being exposed on the side face of the stacked body.