Patent ID: 6357457
Filing Date: 2002-03-19
Classification: B08B,H01L,Y10S

Abstract:
An apparatus for cleaning a substrate, which removes an insulating film from a non-pattern formed surface of the substrate opposite to a pattern formed surface having a pattern formed thereon by photolithography, said apparatus comprising:a spin chuck for holding the substrate substantially horizontally with the pattern formed surface placed at an upside and the non-pattern formed surface placed at a downside; a rotation driving mechanism for rotating the spin chuck; a cup surrounding the substrate held by the spin chuck; a lower nozzle having a plurality of liquid outlet holes facing both a peripheral portion and a center portion of the non-pattern formed surface of the substrate held by the spin chuck; a first process liquid supply mechanism for supplying a chemical solution for removing the insulating film from the non-pattern formed surface of the substrate; an upper nozzle having a plurality of liquid outlet holes facing the pattern formed surface of the substrate held by the spin chuck; a second process liquid supply mechanism for supplying a rinse solution to the upper nozzle; and a controller for controlling operations of the process liquid supply mechanisms and the rotation driving mechanism, individually, wherein the controller controls the rotation driving mechanism to rotate the spin chuck and controls the first process liquid supply mechanism to supply the chemical solution to the lower nozzle, and simultaneously controls the second process liquid supply mechanism to supply the rinse solution to the upper nozzle, thereby covering the pattern formed surface of the substrate with the rinse solution to protect the pattern formed surface of the substrate from being exposed to the chemical solution applied to the non-pattern formed surface.