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:
Mar. 06, 2007
Filed:
Sep. 16, 2003
Motokazu Kobayashi, Kanagawa, JP;
Makoto Kubota, Kanagawa, JP;
Hisao Suzuki, Aichi, JP;
Fumio Uchida, Osaka, JP;
Chiemi Shimizu, Osaka, JP;
Kenji Maeda, Gifu, JP;
Motokazu Kobayashi, Kanagawa, JP;
Makoto Kubota, Kanagawa, JP;
Hisao Suzuki, Aichi, JP;
Fumio Uchida, Osaka, JP;
Chiemi Shimizu, Osaka, JP;
Kenji Maeda, Gifu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Fuji Chemical Co. Ltd, Osaka, JP;
Abstract
In a piezoelectric element having a piezoelectric film sandwiched between a lower electrode and an upper electrode, the lower electrode and/or the upper electrode and the piezoelectric film comprise perovskite oxide and a contact interface between the lower electrode and/or the upper electrode and the piezoelectric film does not exist and a region where crystals of the lower electrode and/or the upper electrode and crystals of the piezoelectric film are mixed exists between the lower electrode and/or the upper electrode and the piezoelectric film.