Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1978-04-03
1980-03-11
Mack, John H.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
20412965, 204277, 204297R, C25F 314, C25F 700
Patent
active
041927290
ABSTRACT:
An apparatus for forming an interconnect structure on an integrated circuit chip by employing a single chamber for both the required etching and anodization. It has been discovered that an etchant-electrolyte such as phosphoric acid solution in the ratios of one part phosphoric acid to four parts of water can serve as both an etchant and an electrolyte without causing deterioration of the photoresist pattern representing the interconnect structure.
REFERENCES:
patent: 3317410 (1967-05-01), Croll et al.
patent: 3536594 (1970-10-01), Pritchard
patent: 3554891 (1971-01-01), Duffy et al.
patent: 3732159 (1973-05-01), Platt
patent: 3745100 (1973-07-01), Lasser
patent: 3746632 (1973-07-01), Kuhdorf et al.
patent: 3909368 (1975-09-01), Raymond et al.
patent: 4118303 (1978-10-01), Gibbs
Cancelleri Dan
Thompson Charles E.
Burroughs Corporation
Dwyer Joseph R.
Mack John H.
Peterson Kevin R.
Valentine D. R.
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