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. 06, 2009
Filed:
Aug. 10, 2007
Applicants:
Shozo Kobayashi, Yasu, JP;
Hiromitsu Hongo, Yasu, JP;
Koichi Hayashi, Kusatsu, JP;
Inventors:
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/083 (2006.01);
U.S. Cl.
CPC ...
Abstract
A monolithic piezoelectric element includes a stack, and the stack includes a crack-forming conductive layer arranged to intentionally form a small crack in the stack. The small crack alleviates stress, thereby preventing the occurrence of a large crack that may extend to the piezoelectrically active region.