Patent ID: 6333271
Filing Date: 2001-12-25
Classification: H01J

Abstract:
A plasma etch method for plasma etch processing a microelectronic layer comprising:providing a substrate having formed thereupon a microelectronic layer;etching the microelectronic layer while employing a first plasma etch method employing a first detection apparatus optimized to measure a thickness of the microelectronic layer, the first detection apparatus controlling the first plasma etch method to stop prior to reaching the substrate to thus form from the microelectronic layer a partially etched microelectronic layer; andetching the partially etched microelectronic layer while employing a second plasma etch method employing a second detection apparatus optimized to detect the substrate, the second detection apparatus controlling the second etch method to stop on the substrate and followed by over etch step to clearly remove microelectronic dielectric layer residue to form a completely etched microelectronic layer.