Patent ID: 6354109
Filing Date: 2002-03-12
Classification: C03C,C23C,Y10T

Abstract:
A nozzle for forming a film by chemical vapor deposition, the nozzle comprising first and second upstream heel-pieces, a central profiled block, and a downstream heel-piece, each of the heel pieces and central profiled block having a lower portion, a first region defined between the two upstream heel-pieces for injecting at least one first precursor gas, a second region defined between the upstream heel-piece and the central profiled block for injecting at least one second precursor gas having a different composition than the first precursor gas, a third region defined between the central profiled block and the downstream heel-piece for evacuating gaseous effluent, the regions and lower portions guiding gas streams supplying the injection slots along the glass in a deposition zone with a flow path having approximately the shape of a U, the distance between the two injection slots and the relative configurations of the first upstream heel-piece, the second upstream heel-piece, and the central block being chosen so as to cause partial and progressive mixing between the gas streams in the deposition zone.