Patent ID: 6852242
Filing Date: 2005-02-08
Classification: H01J,H01L

Abstract:
1. A method of processing substrates in a chamber, the method comprising: (a) in a first etching process: placing a first substrate in the chamber, the first substrate having a first material; and providing a first energized etching gas in the chamber to etch the first material of the first substrate, thereby depositing first etchant residues on surfaces in the chamber, the first etchant residues comprising silicon-containing etchant residues; (b) in a second etching process: placing a second substrate in the chamber, the second substrate having a second material; and providing a second energized etching gas in the chamber to etch the second material of the second substrate, thereby depositing second etchant residues on surfaces in the chamber, the second etchant residues comprising carbon-containing etchant residues, wherein the first and second etchant residues have different compositions because either (i) the first material of tho first substrate is a different material than the second material of the second substrate, or (ii) the first energized etching gas comprises a different gas composition than the second energized etching gas; and c) cleaning the first and second etchant residues by (i) introducing a cleaning gas comprising O