Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1986-03-06
1988-01-05
Smith, John D.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 98, 427437, 4274431, C23C 1836, H05K 346
Patent
active
047175915
ABSTRACT:
This invention relates to the prevention of mechanical and electrical failures in structures that are heat-treated, and more particularly relates to the use of coating layers containing Co and P on corrosible materials such as Cu. The invention has significant utility in the protection of Cu current-carrying lines in electronic structures that comprise multi layers that are subjected to heat treatments that would normally adversely affect the Cu lines. The CoP coating layer also acts to prevent interdiffusion between Cu and contact metals, such as Au.
REFERENCES:
patent: 4002778 (1977-01-01), Bellis
patent: 4232060 (1980-11-01), Mallory
patent: 4349585 (1982-09-01), Nagashima
patent: 4386116 (1983-05-01), Nair
patent: 4503131 (1985-03-01), Baudrand
Acosta Raul E.
Horkans Wilma J.
Mukherjee Ruby
Olsen Judith D.
International Business Machines - Corporation
Smith John D.
Stanland Jackson E.
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