Patent ID: 8609545

Claim:
A method for etching a substrate in a system comprising a plurality of process chambers wherein one of the plurality of process chambers has sidewalls that include indentions to receive at least one plasma filtering plate and one of the plurality of process chambers includes a plasma filtering plate library, the method further comprising: selecting a plasma filtering plate from the plasma filtering plate library, wherein the plasma filtering plate library comprises a plurality of plasma filtering plates and wherein one or more of the plasma filtering plates comprise a plurality of apertures patterned to remedy critical dimension uniformity error present in the substrate; removing the selected plasma filtering plate from the plasma filtering plate library; inserting the selected plasma filtering plate into the indentions of the at least one of the plurality of process chambers adapted to receive at least one plasma filtering plate, such that the process chamber secures and supports the plasma filtering plate within the process chamber using the sidewalls of the process chamber; and performing a plasma etching process in the substrate.