Patent ID: 6416579
Filing Date: 2002-07-09
Classification: B05B,H01L

Abstract:
An apparatus for the chemical treatment of disc-shaped semiconductor substrates, comprising(a) a fluid-tight treatment chamber, (b) a carrier for holding at least one disc-shaped substrate in the treatment chamber, (c) an elongated spraying head having a plurality of nozzles for applying a fluid to at least one surface of the substrate, the spraying head (1) being adjustably mounted in the treatment chamber and (2) having a length corresponding at least to the diameter of the disc-shaped substrate, (d) fluid inlet conduit means having portions leading from outside the treatment chamber into the treatment chamber and to the nozzles, (1) the fluid inlet conduit means portions in the treatment chamber being adjustable with the spraying head, (e) adjustment drive means for displacing the spraying head transversely relative to the substrate over the surface thereof whereby the nozzles sweep over the surface in substantially parallel tracks, (f) at least one outlet connected to a suction device for removing the applied fluid from the treatment chamber, and (g) fluid flow shut-off members in the fluid inlet conduit means outside the treatment chamber for selectively opening and closing fluid flow to at least some of the nozzles and to connect the nozzles to different inlet conduits.