Patent ID: 7819076

Claim:
A substrate treatment apparatus for treating a substrate having a resist pattern formed thereon, comprising: a solvent vapor discharge nozzle which discharges a solvent vapor for swelling the resist pattern to a partial region on a front surface of the substrate; and a nozzle moving mechanism which moves the solvent vapor discharge nozzle discharging the solvent vapor along the front surface of the substrate, wherein said solvent vapor discharge nozzle includes a discharge port which discharges the solvent vapor toward the substrate, a current member which straightens the current of the solvent vapor to prevent the solvent vapor from diffusing from the region to which the solvent vapor is discharged from the discharge port and a main body including an almost rectangular parallelepiped shape long in a direction perpendicular to the moving direction of said solvent vapor discharge nozzle, wherein the discharge port is disposed in a lower surface of the main body along a longitudinal direction of the main body to be able to discharge the solvent vapor over at least a length of a diameter of the substrate, wherein the current member is provided at least ahead of the discharge port in the moving direction on the lower surface of the main body of said solvent vapor discharge nozzle, the current member including a current plate, wherein the solvent vapor discharge nozzle is provided with a gas supply port which supplies an inert gas or a nitrogen gas to a periphery of the region on the substrate to which the solvent vapor is discharged, the gas supply port directs the inert gas or nitrogen gas outwardly with respect to the current member, and wherein the gas supply port is integrally formed within the current plate.