Patent ID: 8596623

Claim:
A device for treating a surface of a substrate, comprising: a holder adapted to position a substrate in a predetermined orientation; a first upper peripheral surface of said holder adapted to define with a substrate positioned above said holder a first nozzle; a second upper peripheral surface of said holder positioned outwardly from said first upper peripheral surface and adapted to define with a substrate positioned above said holder a second nozzle; wherein the first and second upper peripheral surfaces are separated by a recess formed therebetween; a gas supply configured to provide an outwardly directed gas flow across said first and second upper peripheral surfaces; and an inwardly facing peripheral surface of said holder positioned outwardly of said first and second upper peripheral surfaces and confronting a peripheral edge of a substrate positioned on said holder, said inwardly facing peripheral surface being configured to direct a gas flow exiting said second nozzle upwardly; wherein said first upper peripheral surface is formed on an upper part of said holder and said second upper peripheral surface and said inwardly facing peripheral surface are formed on a ring rigidly secured to said upper part of said holder.