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. 30, 2007
Filed:
Nov. 30, 2005
Shige Kadotani, Chita-gun, JP;
Akio Iwase, Nishio, JP;
Shige Kadotani, Chita-gun, JP;
Akio Iwase, Nishio, JP;
DENSO Corporation, Kariya, Aichi-pref., JP;
Abstract
This invention provides a laminated piezoelectric element that suppresses the peeling off of an electrically conductive adhesive and has excellent durability and high reliability, and a method of manufacturing the laminated piezoelectric element. A laminated piezoelectric elementhas a ceramic laminateformed by alternately laminating a piezoelectric layerof a piezoelectric material and inner electrode layersandhaving electrical conductivity, and by having protection layersof ceramics formed at both ends of the ceramic laminatein a lamination direction, and that has an external electrodeconnected to side surfacesandof the ceramic laminatevia an electrically conductive adhesive. One or more trenchesrecessed inward are formed on side surfacesandof at least one of the protection layersat both ends, and the electrically conductive adhesiveis filled in at least a part of the trenches