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:
Nov. 13, 2007
Filed:
Dec. 21, 2005
Akio Iwase, Nishio, JP;
Shige Kadotani, Chita-gun, JP;
Tetsuji Itou, Kariya, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Abstract
This invention provides a stacked piezoelectric element that has excellent durability and reliability by ensuring reliable electrical conduction between internal electrode layer and conductive adhesive, and a method of fabricating such a stacked piezoelectric element, wherein the stacked piezoelectric elementcomprises: a ceramic stackconstructed by alternately stacking piezoelectric layersmade of a piezoelectric material and internal electrode layershaving electrical conductivity; and external electrodesbonded to the side facesandof the ceramic stackvia an electrically conductive adhesive. The side facesandof the ceramic stackare provided with electrode recesseseach formed by indenting a portion of the edge of each of the internal electrode layersin the stacking direction thereof thereby forming a gap between it and the overlying piezoelectric layer, and the conductive adhesiveis applied so as to enter the electrode recessesfrom the side facesandof the ceramic stack