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. 22, 2013
Filed:
Mar. 23, 2011
Masayuki Uetani, Kasugai, JP;
Makoto Tani, Inazawa, JP;
Masayuki Uetani, Kasugai, JP;
Makoto Tani, Inazawa, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
An electronic device includes a layered piezoelectric element and a driven member. The driven member is bonded to the top surface of the layered piezoelectric element by means of an epoxy resin adhesive. The piezoelectric element includes a side electrode on one side surface of the element, which is one of the outer surfaces of the element. The piezoelectric element includes, in the vicinity of the upper end portion of the side surface, a dam portion formed of a material for preventing epoxy bleed out of the adhesive. Therefore, even when the epoxy bleed out of the adhesive occurs, a bled-out portion of the components of the adhesive does not reach the side electrode. Thus, when the side electrode is connected to an external circuit by, for example, soldering, reduction in the connection strength or similar problems are avoided.