Patent ID: 8166913

Claim:
A substrate coating treatment apparatus, comprising a rotary holding unit for holding and rotating a substrate; a first nozzle for supplying a coating solution onto the substrate; a second nozzle for selectively supplying a solvent for the coating solution and a dry gas onto the substrate; a thickness measurement member for measuring the thickness of the coating solution within the substrate; a first moving mechanism for moving said first nozzle and said thickness measurement member to a predetermined position above the substrate; and a second moving mechanism for moving said second nozzle to a predetermined position above the substrate wherein said first nozzle and said thickness measurement member are provided on a same support member, and wherein said coating treatment apparatus further comprises a control unit configured to control said first moving mechanism and said first nozzle to move said first nozzle to a position above a central portion of the substrate and then to apply a coating solution onto the central portion of the rotated substrate, and then to control said first moving mechanism and said thickness measurement member in order to move said thickness measurement member from the position above the central portion of the substrate toward a position above an outer peripheral portion while the substrate is being rotated to measure the thickness of the coating solution on a radius of the substrate.