Method to improve inductance with a high-permeability...

Details Method to improve inductance with a high-permeability... Method to improve inductance with a high-permeability...

2004-07-30

2008-10-14

Enad, Elvin (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

Reexamination Certificate

active

07436281

ABSTRACT:
An inductor structure (102) formed in an integrated circuit (100) is disclosed, and includes a first isolation layer (106) and a first core plate (104) disposed over or within the first isolation layer (106, 114). The first core plate (104) includes a plurality of electrically coupled conductive traces composed of a conductive ferromagnetic material layer. A second isolation layer (108) overlies the first isolation layer and an inductor coil (102) composed of a conductive material layer (118) is formed within the second isolation layer (108). Another core plate may be formed over the coil. The one or more core plates increase an inductance (L) of the inductor coil (102).

REFERENCES:
patent: 5583474 (1996-12-01), Mizoguchi et al.
patent: 5915188 (1999-06-01), Ramakrishnan et al.
patent: 6114937 (2000-09-01), Burghartz et al.
patent: 6600208 (2003-07-01), Brennan et al.
patent: 2002/0097129 (2002-07-01), Johnson
patent: 2003/0091846 (2003-05-01), Kobayashi et al.
patent: 2003/0175411 (2003-09-01), Kodas et al.
patent: 2004/0263310 (2004-12-01), Ding et al.

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