Patent ID: 6866723
Filing Date: 2005-03-15
Classification: B08B,H01L,Y10S

Abstract:
1. A wet treatment method useful in at least one of a chemical processing step and a rinsing step performed upon fabrication of semiconductor devices, which comprises a sub-step in which: a substrate under treatment is treated with a desired liquid while causing said substrate to revolve around an axis of rotation outside said substrate such that said desired liquid flowing on a surface of said substrate is maintained flowing under a centrifugal force greater than gravitation, the surface of the substrate disposed on a horizontal plane perpendicular to the axis of rotation, and said substrate is treated while supplying an additional amount of said desired liquid at a flow rate at least equal to a discharge rate of said desired liquid, the additional amount of the desired liquid provided to the substrate only in a direction perpendicular to the axis of rotation, while directly spraying with the desired liquid only a top cover of a chamber in which the desired liquid is supplied to the substrate, whereby said substrate is evenly treated at said surface thereof with said desired liquid while avoiding development of such a situation that flows of said desired liquid run against each other on said surface of said substrate or a flow of said desired liquid stagnates on said surface of said substrate.