Coating processes – Electrical product produced – Metallic compound coating
Patent
1993-12-02
1995-01-17
Beck, Shrive
Coating processes
Electrical product produced
Metallic compound coating
427343, 4273855, 4274192, 4274431, B05D 512
Patent
active
053824474
ABSTRACT:
The invention provides a multilayer laminar interconnect package comprising a plurality of conductor circuit layers adhering to and sandwiched between a plurality of dielectric polyimide polymer layers where the conductor circuit layers are a circuit pattern of lines of conductive metal. The conductive metal, e.g. copper, is coated with a capping layer of a metal, e.g. cobalt, which capping layer is further characterized as having a thin layer of the capping metal oxide adhered to the surface thereof. The conductive layer is in contact with an overcoated polyimide dielectric layer such that the surface oxidized capping layer forms an adherent barrier layer at the interface of the polyimide and conductive line layers. The invention also provides a process for producing such interconnect packages.
REFERENCES:
patent: 4770899 (1988-08-01), Zeller
patent: 5112462 (1992-05-01), Swisher
patent: 5151304 (1992-09-01), Lee
patent: 5156732 (1992-10-01), Ogasawara et al.
patent: 5288519 (1994-02-01), Baumgartner et al.
Kaja Suryanarayana
O'Sullivan Eugene J.
Schrott Alejandro G.
Beck Shrive
International Business Machines - Corporation
Utech Benjamin L.
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