Ink jet device having piezoelectric actuator with insulating...

Details Ink jet device having piezoelectric actuator with insulating... Ink jet device having piezoelectric actuator with insulating...

2008-05-28

2010-11-30

SanMartin, J. (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S324000, C310S365000, C347S068000, C347S070000

Reexamination Certificate

active

07843113

ABSTRACT:
A piezoelectric actuator having a bottom electrode attached to a membrane, a piezoelectric layer on the bottom electrode, and a top electrode formed on the piezoelectric layer, wherein the bottom electrode extends substantially over the entire bottom surface of the piezoelectric layer, and at least a peripheral portion of a top surface of the piezoelectric layer and side faces of that layer are covered with an insulating layer, and wherein in the peripheral portion of the top surface of the piezoelectric layer the top electrode is superposed on the insulating layer.

REFERENCES:
patent: 6315400 (2001-11-01), Sakai et al.
patent: 2004/0051763 (2004-03-01), Matsubara et al.
patent: 2005/0046678 (2005-03-01), Owaki et al.
patent: 2005/0248232 (2005-11-01), Itaya et al.
patent: 2005/0275316 (2005-12-01), Murata
patent: 2006/0125489 (2006-06-01), Feucht et al.
patent: 1089360 (2001-04-01), None

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