Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1979-08-16
1981-03-03
Lawrence, Evan K.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
357 54, 427 95, B05D 512
Patent
active
042541611
ABSTRACT:
A chemical vapor deposition process wherein a silicon nitride barrier layer greater than about 50 Angstroms in thickness is formed over a silicon substrate and a low pressure chemical vapor deposition of a chlorosilane and a nitrous oxide oxidizing gas is used to form a silicon dioxide layer over the silicon nitride layer, where the silicon dioxide layer has a thickness between 2500 and 100,000 Angstroms. This process overcomes the problem of the low pressure chemical vapor deposition of silicon dioxide that does not use the silicon nitride layer. The problem is degradation of the silicon dioxide layer during subsequent oxidation cycles.
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patent: 3607480 (1971-09-01), Harrap et al.
patent: 3728784 (1973-04-01), Schmidt
patent: 3764423 (1973-10-01), Hauser, Jr. et al.
patent: 4002512 (1977-01-01), Lim
patent: 4091169 (1978-05-01), Bohg et al.
Rosler, R. S., "Low Pressure CVD Production Processes for Poly, Nitride, and Oxide", Solid State Technology, Apr. 1977, pp. 66-68.
Oroshnik J., et al., Pyrolytic Deposition of Silicon Dioxide in an Evacuated System, Journal Electrochemical Society Solid State Science, vol. 115, p. 649, 1968.
Sandor, Pyrolytic Growth of Silicone Oxide, Presented at The Electrochemical Society Meeting, Los Angeles, California, May 6-10, 1962.
International Business Machines - Corporation
Lawrence Evan K.
Saile George O.
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