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:
Mar. 25, 2008
Filed:
Oct. 31, 2005
Applicants:
Koji Ikeda, Hisai, JP;
Kazuyoshi Shibata, Mizunami, JP;
Inventors:
Koji Ikeda, Hisai, JP;
Kazuyoshi Shibata, Mizunami, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
In piezoelectric/electrostrictive elements, electrode layers have respective ends projecting outwardly from an end face of a piezoelectric/electrostrictive layer on a side surface where the laminated state of the piezoelectric/electrostrictive layer and the electrode layers is exposed. The distance by which the ends project outwardly from the end face is equal to or smaller than one half of the thickness of the piezoelectric/electrostrictive layer between the electrode layers. The distance is preferably in a range from 0.5 μm to 2 μm.