Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2007-01-16
2007-01-16
Mai, Anh (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
C336S223000, C336S232000
Reexamination Certificate
active
10906540
ABSTRACT:
An integrated transformer with a stack structure comprises a middle dielectric layer, a bottom dielectric layer, a first winding and a second winding. A portion of the first winding is disposed over a surface of the middle dielectric layer and the remaining portion of the first winding is disposed over a surface of the bottom dielectric layer. A portion of the second winding is disposed over the surface of the middle dielectric layer and the remaining portion of the second winding is disposed over the surface of the bottom dielectric layer. The second winding doesn't intersect with the first winding. The portions of the first and second windings over the surface of the middle dielectric layer connect with the remaining portions of the first and second windings over the surface of the bottom dielectric through via plugs.
REFERENCES:
patent: 3904911 (1975-09-01), Welsch
patent: 4816784 (1989-03-01), Rabjohn
patent: 6707367 (2004-03-01), Castaneda et al.
patent: 6867677 (2005-03-01), Nielson
patent: 6940386 (2005-09-01), Mukherjee et al.
patent: 6967555 (2005-11-01), Yu et al.
Jiang Chyun IP Office
Mai Anh
Winbond Electronics Corp.
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