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Title: Plated lamination structures for integrated magnetic devices

Patent ·
OSTI ID:1134224

Semiconductor integrated magnetic devices such as inductors, transformers, etc., having laminated magnetic-insulator stack structures are provided, wherein the laminated magnetic-insulator stack structures are formed using electroplating techniques. For example, an integrated laminated magnetic device includes a multilayer stack structure having alternating magnetic and insulating layers formed on a substrate, wherein each magnetic layer in the multilayer stack structure is separated from another magnetic layer in the multilayer stack structure by an insulating layer, and a local shorting structure to electrically connect each magnetic layer in the multilayer stack structure to an underlying magnetic layer in the multilayer stack structure to facilitate electroplating of the magnetic layers using an underlying conductive layer (magnetic or seed layer) in the stack as an electrical cathode/anode for each electroplated magnetic layer in the stack structure.

Research Organization:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0002892
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Number(s):
8,754,500
Application Number:
13/597,412
OSTI ID:
1134224
Resource Relation:
Patent File Date: 2012 Aug 29
Country of Publication:
United States
Language:
English

References (12)

Magnetic material having high permeability in the high frequency range patent February 1987
Planar inductor patent September 1990
Method of making a multilayer monolithic magnetic component patent January 1996
Article comprising an inductive element with a magnetic thin film patent December 1998
Integrated inductor patent December 2009
Control of eddy currents in magnetic vias for inductors and transformers in integrated circuits patent May 2010
Laminated magnetic material for inductors in integrated circuits patent May 2010
Configurable multiphase coupled magnetic structure patent June 2010
Laminating magnetic materials in a semiconductor device patent July 2010
Fabrication approaches for the formation of planar inductors and transformers patent-application May 2003
Amorphous soft magnetic layer for on-die inductively coupled wires patent-application July 2008
Inductor with Laminated Yoke patent-application July 2013

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