Method of fabricating semiconductor device

Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material

Reexamination Certificate

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C438S706000, C257SE21579

Reexamination Certificate

active

07553761

ABSTRACT:
A method of fabricating a semiconductor device is provided. The method includes forming a low-k dielectric layer on a semiconductor substrate, forming a mask pattern on the low-k dielectric layer, and dry etching the low-k dielectric layer using the mask pattern as an etch mask. A dry etching gas is used for the dry etching of the low-k dielectric layer. The dry etching gas includes a mixture of a gas containing chlorine atoms and at least one gas selected from a group consisting of a gas containing oxygen atoms, a gas containing nitrogen atoms, and an inert gas. The dry etching gas does not contain fluorine atoms.

REFERENCES:
patent: 7122479 (2006-10-01), Ohmoto et al.
patent: 7279428 (2007-10-01), Lin et al.
patent: 2004/0074869 (2004-04-01), Wang et al.
patent: 2004-022974 (2004-01-01), None
patent: 10-2001-0081453 (2001-08-01), None
patent: 10-2002-0009440 (2002-02-01), None
patent: 10-2003-0087041 (2003-11-01), None

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