Patent ID: 6466881
Filing Date: 2002-10-15
Classification: C23C,H01J

Abstract:
A chamber assembly for processing substrates in a plasma, comprising:a processing chamber including a processing zone wherein substrates are processed, wherein said processing chamber includes at least one conductive component, and wherein a protective chamber coating protects at least a portion of said conductive component surface; a pedestal assembly disposed in said processing zone and having a receiving surface for receiving a substrate; a first electrode contacting said protective chamber coating; a second electrode coupled to a portion of said conductive component, a surface of which is protected by said protective chamber coating; an EIS measurement and data acquisition system working in combination with said first electrode and said second electrode; at least one processing power source; a processing gas-introducing assembly, engaged to said processing chamber, for introducing at least one processing gas into said processing zone; and at least one processing power-transmitting member connected to said at least one processing power source, for transmitting power into said processing zone, to aid in sustaining a plasma from a processing gas within said processing zone.