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:
Feb. 09, 2010
Filed:
Apr. 10, 2007
Yoshihiro Takemura, Matsumoto, JP;
Manabu Nagawatari, Matsumoto, JP;
Yoshihiro Takemura, Matsumoto, JP;
Manabu Nagawatari, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejecting head that includes a plurality of pressure generating chambers, a plurality of piezoelectric elements, and a film wiring substrate. The piezoelectric elements each have a lower electrode, a piezoelectric layer and an upper electrode. Each of the piezoelectric elements is provided in an area opposite to the associated pressure generating chamber. The wiring substrate includes wiring layers, each of which is electrically connected to the associated upper electrode so as to supply electricity to the piezoelectric element. The piezoelectric elements include active piezoelectric elements and inactive piezoelectric elements. Each of the active wiring layers is electrically connected to the associated active piezoelectric element. Each of the inactive wiring layers is electrically connected to the associated inactive piezoelectric element.