Patent ID: 6551400
Filing Date: 2003-04-22
Classification: B05C,G03F

Abstract:
A coating apparatus for forming a film on a substrate by applying a processing solution containing a solvent, on the substrate, said coating apparatus comprising:a spin chuck configured to rotatably hold the substrate; a nozzle positioned in proximity to the substrate on the spin chuck, and configured to discharge the processing solution on the substrate; a supply source configured to supply the processing solution to the nozzle; a supply pipe line provided from the supply source to the nozzle; a valve provided on the supply pipe line, configured to control the supply of the processing solution from the supply source to the nozzle; and viscosity adjusting means, provided on the supply pipe line between the supply source and the valve, for increasing/decreasing an amount of the solvent contained in the processing solution, thereby adjusting a viscosity of the processing solution sent to the nozzle via the valve.