Patent ID: 9741600
Date: 2017-08-22
CPC Classifications: C23C,H01L

Claim:
1. A method for processing a semiconductor substrate, said method comprising: providing a disc/edge ring assembly, said disc/edge ring assembly including a disc with a terraced peripheral edge including at least an upper edge portion with an upper outer diameter less than a lower outer diameter of a lower edge portion and an edge ring disposed over said lower edge portion and including an outer vertical portion circumferentially surrounding said disc/edge ring assembly; disposing a substrate on said disc/edge ring assembly such that said substrate rests on at least an upper surface of said disc, said substrate including a diameter greater than said upper outer diameter; inserting robot blades beneath said edge ring; and lifting said edge ring while keeping peripheral edges of said substrate resting on a horizontal surface of said edge ring thereby causing said substrate to be lifted from said disc/edge ring assembly.