Coating processes – Centrifugal force utilized
Patent
1998-09-08
1999-10-05
Bell, Janyce
Coating processes
Centrifugal force utilized
118 52, 118320, 118321, 134 33, 1341042, 134172, 134198, 4273855, 437231, B05D 312, B05C 1102, B08B 700
Patent
active
059620706
ABSTRACT:
A substrate treating method and apparatus for treating a substrate by supplying a developing solution thereto while spinning the substrate. A nozzle having a plurality of discharge openings for discharging the developer is disposed such that the discharge openings are at different distances from the spin center of the substrate. The developer is discharged from the nozzle while the latter is moved radially of the substrate. The discharge openings then describe loci not overlapping one another over the substrate. The developer is evenly supplied over the substrate to promote the uniformity of development on the substrate surface.
REFERENCES:
patent: 5427820 (1995-06-01), Biche et al.
patent: 5571560 (1996-11-01), Lin
patent: 5695817 (1997-12-01), Tateyama et al.
Hashimoto Koji
Mitsuhashi Tsuyoshi
Osada Naoyuki
Wada Takuya
Bell Janyce
Dainippon Screen Mfg. Co,. Ltd.
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