Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2006-05-09
2006-05-09
Nguyen, Tuyen T (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
Reexamination Certificate
active
07042326
ABSTRACT:
A symmetrical inductor includes a first metal layer, the first metal layer having a first conductive segment disposed on a first side of a line, and a second conductive segment disposed on a second side of the line, the second conductive segment and the first conductive segment being symmetrical to the line; a second metal layer, the second metal layer having a third conductive segment disposed on the first side of the line, and a fourth conductive segment disposed on the second side of the line, the fourth conductive segment and the third conductive segment being symmetrical to the line; a first contact plug for connecting the first conductive segment with a first end of the third conductive segment; a second contact plug for connecting the first conductive segment with a second end of the third conductive segment; a third contact plug for connecting the second conductive segment with a first end of the fourth conductive segment, the third contact plug and the first contact plug being symmetrical to the line; and a fourth contact plug for connecting the second conductive segment with a second end of the fourth conductive segment, the fourth contact plug and the second contact plug being symmetrical to the line.
REFERENCES:
patent: 6867677 (2005-03-01), Nielson
patent: 6967555 (2005-11-01), Yu et al.
patent: 6972658 (2005-12-01), Findley et al.
patent: 2004/0217839 (2004-11-01), Haaren et al.
Hsu Winston
Nguyen Tuyen T
United Microelectronics Corp.
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