Coating apparatus – Work holders – or handling devices
Patent
1998-10-07
2000-12-26
Edwards, Laura
Coating apparatus
Work holders, or handling devices
118 52, 118320, 118501, 134153, 134902, 137 8, 396611, 396627, 427240, B05C 1302, B05D 302, B08B 308, B03D 504
Patent
active
061652679
ABSTRACT:
A spin coating apparatus requires less cleanroom air flow than prior spin coating apparatus to minimize cleanroom contamination. A shaped exhaust duct from the spin coater maintains process quality while requiring reduced cleanroom air flow. The exhaust duct can decrease in cross section as it extends from the wafer, minimizing eddy formation. The exhaust duct can conform to entrainment streamlines to minimize eddy formation and reduce interprocess contamination at minimal cleanroom air flow rates.
REFERENCES:
patent: 5289222 (1994-02-01), Hurtig
patent: 5366757 (1994-11-01), Lin
patent: 5378511 (1995-01-01), Cordinali et al.
patent: 5449405 (1995-09-01), Cordinali et al.
patent: 5562772 (1996-10-01), Neoh
Bieg Kevin
Edwards Laura
Grafe V. Gerald
Lorengo J. A.
Sandia Corporation
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