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:
Jun. 08, 2004
Filed:
Jun. 26, 2002
Hiroshi Nakatani, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A multilayer piezoelectric device includes long internal electrodes and short internal electrodes which are arranged so as to extend from a pair of opposing side surfaces of a piezoelectric substrate towards the corresponding side surfaces opposite to the side surfaces from which they extend, and so as to be alternately stacked in the piezoelectric substrate. Active portions are located at portions where the long internal electrodes and the corresponding short internal electrodes are stacked. Further, a first external electrode, connected to the short internal electrodes, is electrically connected to the side surface near the active portions, and a second external electrode, connected to the long internal electrodes, is electrically connected to the side surface distant from the active portions. The first external electrode extends from the side surface of the piezoelectric substrate near the active portions, onto a main surface, and to a location adjacent to the side surface distant from the active portions, while the second external electrode extends onto the main surface so as to be disposed on left and right sides of locations at the first external electrode that are adjacent to the side surface of the piezoelectric substrate distant from the active portions.