Patent ID: 6149727
Filing Date: 2000-11-21
Classification: B05C,B25B,H01L,Y10S

Abstract:
A substrate processing apparatus for applying given processing to a substrate while rotating the substrate, comprising:a spin holder, having a first circular portion for supporting a back side of the substrate and at least one second circular portion provided to surround the outside of said first circular portion, for holding the substrate by suction in a horizontal attitude;rotation driving means for rotating said spin holder; andsuction means for sucking the substrate through a space inside said first circular portion on said spin holder, whereinsaid spin holder has one or a plurality of connection holes connecting a first space defined by said first circular portion, said second circular portion and the back side of the substrate and a second space outside said first space, andsaid one or plurality of connection holes regularly makes the atmosphere of said first space communicate with the atmosphere of said second space while the substrate is placed on said spin holder.