Patent ID: 6174816
Filing Date: 2001-01-16
Classification: H01L

Abstract:
A method of patterning a silicon structure comprising:a) depositing an anti-reflective coating on an uppermost layer of a silicon substrate;b) treating the anti-reflective coating with a gaseous plasma to form a plasma-treated anti-reflective coating;c) depositing a photoresist over the plasma-treated anti-reflective coating;d) providing a patterning mask;e) curing the photoresist through the mask to provide a pattern in the photoresist comprised of cured and uncured portions of photoresist, thereby setting pattern dimensions for subsequent steps;f) selectively removing either cured or uncured portions of the photoresist, thereby forming a pattern in the photoresist; andg) removing those portions of the plasma-treated anti-reflective coating lying beneath the selectively removed cured or uncured portions of the photoresist, thereby forming a pattern in the plasma-treated anti-reflective coating.