Patent ID: 7543593
Filing Date: 2009-06-09
Classification: B08B,H01L

Abstract:
1. A substrate processing method comprising: causing relative vertical movement between a substrate and a top plate to change a first positional relationship in which the top plate is located away from the substrate to a second positional relationship in which the top plate is located adjacent to an upper surface of the substrate, wherein in the second positional relationship, the top plate lies above the upper surface to substantially cover an area radially inside of the periphery of the upper surface, supplying an inert gas to an upper surface of the substrate, and supplying a chemical liquid to a position of the upper surface of the substrate radially outside a portion of the substrate to which the inert gas is supplied while supplying the inert gas to the upper surface of the substrate, wherein, during the supplying of the inert gas and the chemical liquid, the second positional relationship is maintained, the substrate is rotating and the inert gas is supplied, from the top plate to a space between the substrate and the top plate.