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. 07, 2006
Filed:
Jun. 20, 2003
Mutsumi Kitagawa, Inuyama, JP;
Koji Kimura, Nagoya, JP;
Mutsumi Kitagawa, Inuyama, JP;
Koji Kimura, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
There is disclosed a piezoelectric/electrostrictive device made of piezoelectric/electrostrictive film which includes: a substrate section; and an operation section disposed on the substrate section and constituted of a piezoelectric/electrostrictive film and an electrode film and which operates by displacement of the operation section. The operation section comprises the piezoelectric/electrostrictive films and electrode films alternately laminated so that uppermost and lowermost layers form the electrode films, the operation and substrate sections are integrally fired, and the substrate section is constituted of a ceramic which contains a titanium element. For the piezoelectric/electrostrictive device made of piezoelectric/electrostrictive film, a residual stress after firing hardly exists, therefore larger displacement is obtained with the same driving voltage, response speed is higher, and generation force is larger.