Coating apparatus – Gas or vapor deposition – Multizone chamber
Patent
1991-08-15
1992-06-16
Bueker, Richard
Coating apparatus
Gas or vapor deposition
Multizone chamber
118725, 118729, 414217, C23C 1600
Patent
active
051217058
ABSTRACT:
A loading lock for a chemical vapor deposition apparatus comprises three chambers: an outer chamber for introduction and removal of substrates, a reaction chamber for forming thin films on the surfaces of the substrates and an intermediate chamber disposed between the outer chamber and the reaction chamber. The intermediate chamber keeps the reaction chamber in an air-tight state isolated from the atmosphere side at all times. As much of the mechanism for internal conveyance of the substrates as possible is located externally. This arrangement prevents oxidization of the substrate surfaces by air entering the apparatus during introduction and removal of the substrates. It also prevents generation inside the chambers of metallic contaminants, particles and the like which might adhere to the substrate surfaces.
REFERENCES:
patent: 4640223 (1987-02-01), Dozier
patent: 4962726 (1990-10-01), Matsushita
patent: 4989540 (1991-02-01), Fuse
patent: 5058526 (1991-10-01), Matsushita
Bueker Richard
MBK Microtek Inc.
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