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:
Sep. 01, 2015
Filed:
Jan. 25, 2013
Applicant:
Tdk Corporation, Chuo-ku, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/083 (2006.01); H01L 41/047 (2006.01); H01L 41/04 (2006.01);
U.S. Cl.
CPC ...
H01L 41/0471 (2013.01); H01L 41/04 (2013.01); H01L 41/083 (2013.01);
Abstract
A laminated piezoelectric device comprising a device bodyon which a number of piezoelectric layersand internal electrodesare laminated, external electrodeselectrically connected to the internal electrodesand formed on the surface of the device body, an insulation layerand a resistance layer. The insulation layercovers at least a portion wherein internal electrodesare exposed on the surface of the device body, where mechanical displacement is generated by applying voltage. The resistance layeris formed to connect between external electrodesand has a lower electric resistance value than the insulation layer