Patent ID: 6099747
Filing Date: 2000-08-08
Classification: C23C,H01J,Y10S

Abstract:
A method of operating and chamber etching a plasma processing apparatus having a plasma chamber enclosing a substrate electrode that faces a counter electrode, the method comprising the steps of:when operating the plasma processing apparatus to form a layer on a wafer carried by the substrate electrode,grounding the substrate electrode,connecting the counter electrode to a high frequency power source, andintroducing a plasma-forming gas into the plasma chamber to thereby form a layer on the wafer; andwhen chamber etching the plasma processing apparatus after removal of the wafer,disconnecting the counter electrode from the high frequency power source and connecting it to ground,disconnecting the substrate electrode from ground and connecting it to the high frequency power source, andintroducing a fluorocarbon gas into the plasma chamber to thereby etch deposits on an interior of the plasma chamber.