Metal working – Piezoelectric device making
Reexamination Certificate
2006-01-03
2006-01-03
Bryant, David P. (Department: 3729)
Metal working
Piezoelectric device making
C029S890100, C216S027000, C347S068000
Reexamination Certificate
active
06981300
ABSTRACT:
A piezoelectric ink jet print head and a fabrication method for a pressure chamber thereof. A silicon substrate has at least one large-size opening. A photoresist layer is formed in the large-size opening of the silicon substrate and has a plurality of small-size trenches spaced apart from each other. Each of the small-size trenches serves as a pressure chamber. An adhesion layer is formed overlying the silicon substrate to cover the photoresist layer and the small-size trenches. A silicon layer is formed overlying the adhesion layer to serve as a vibrating layer.
REFERENCES:
patent: 5581861 (1996-12-01), Lee et al.
patent: 6096656 (2000-08-01), Matzke et al.
patent: 6334670 (2002-01-01), Yoshihira et al.
patent: 6701593 (2004-03-01), Lin et al.
Tsai Chih-Chang
Yang Ming-Hsun
Afzali Sarang
Bryant David P.
Nanodynamics Inc.
Thomas Kayden Horstemeyer & Risley
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