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:
Jan. 12, 2010
Filed:
May. 05, 2008
Yusuke Adachi, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Masaru Higashionji, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Yusuke Adachi, Osaka, JP;
Hideaki Mukae, Hyogo, JP;
Masaru Higashionji, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Panasonic Corporation, Kadoma, JP;
Abstract
A piezoelectric element is formed by stacking piezoelectric layers and internal electrode layers. The internal electrode layers are positive and negative electrode layers. The positive electrode layers are first and second positive electrode layers. The negative electrode layers are first and second negative electrode layers. Each of the first positive and negative electrode layers includes four divided electrodes and a connecting electrode for connecting a pair of the four divided electrodes formed on diagonally opposite two areas along a first diagonal direction on a principle surface of the associated one of the piezoelectric layers. Each of the second positive and negative electrode layers includes four divided electrodes and a connecting electrode for connecting a pair of the four divided electrodes formed on diagonally opposite two areas along a second diagonal direction on a principle surface of the associated one of the piezoelectric layers.