Semiconductor device manufacturing: process – Chemical etching – Combined with coating step
Reexamination Certificate
2006-06-06
2006-06-06
Chen, Kin-Chan (Department: 1765)
Semiconductor device manufacturing: process
Chemical etching
Combined with coating step
C438S706000, C438S723000
Reexamination Certificate
active
07056830
ABSTRACT:
A method of etching a dielectric layer formed on a substrate including a sequence of processing cycles, wherein each cycle comprises steps of depositing an inactive polymeric film, activating the film to etch the structure, and removing the film is disclosed. In one embodiment, the method uses a fluorocarbon gas to form the polymeric film and a substrate bias to activate such film.
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Law Kam S.
Mak Cecilia Y.
Merry Walter R.
Applied Materials Inc.
Chen Kin-Chan
Patterson & Sheridan LLP
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