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:
Sep. 23, 2003
Filed:
Jun. 20, 2002
Hiroshi Nakatani, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A multilayer piezoelectric device includes a piezoelectric layered body having a driving-side external electrode and a connection-side external electrode disposed at one side surface of the piezoelectric layered body, in which a plurality of actuator units are formed by dividing the piezoelectric layered body by a slit extending from the top surface to the bottom surface of the piezoelectric layered body. A cutaway portion is provided in the one side surface of the piezoelectric layered body where the driving-side external electrode and the connection-side external electrode are located so that the cutaway portion is substantially parallel to driving internal electrodes and a connecting internal electrode. The cutaway portion has a width that allows it to reach a location above the bottom end of the slit from the bottom surface of the piezoelectric layered body but that does not allow it to reach the driving internal electrodes.