Patent ID: 6485782
Filing Date: 2002-11-26
Classification: B05C,G03F,H01L,Y10S,Y10T

Abstract:
A coating film forming method for supplying a coating solution from a coating solution supply nozzle onto the front face of a substrate housed in a processing case to form a coating film, comprising the steps of:mounting the substrate on a mounting table and rotating the substrate; discharging the coating solution from the coating solution supply nozzle onto substantially the center of the substrate and diffusing the coating solution from substantially the center of the rotated substrate toward the outer edge; detecting a spreading state of an outline of the outer periphery of the diffusing coating solution; and controlling at least one of the rotation speed of the substrate, the amount of the coating solution discharged from the coating solution supply nozzle, and the speed of the coating solution discharged from the coating solution supply nozzle based on the detected state.