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. 27, 2009
Filed:
Jun. 27, 2006
Kiyoshi Nitto, Saitama, JP;
Yutaka Maruyama, Tokyo, JP;
Kiyoshi Nitto, Saitama, JP;
Yutaka Maruyama, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a stacked type piezoelectric element including a surface electrode layer as a first layer and a piezoelectric layer as a second layer. A third layer to an N-th layer thereof are formed by alternately arranging piezoelectric layers and piezoelectric layers. A surface of the piezoelectric layer is provided with four-way split inner electrodes S+, B+, A−, and B−. A surface of the piezoelectric layer is provided with four-way split inner electrodes AG+, BG+, AG−, and BG−. A surface of the piezoelectric layer is provided with four-way split inner electrodes of A+, B+, A−, and B−. The piezoelectric layers are formed such that only the inner electrode S+ serving as a sensor phase and the inner electrodes A+ and AG+ being arranged in the same phase as the inner electrode S+ are exposed to an outside of the piezoelectric layer.