发明授权
US08039400B2 Reducing contamination of semiconductor substrates during BEOL processing by performing a deposition/etch cycle during barrier deposition 有权
通过在阻挡层沉积期间进行沉积/蚀刻循环,在BEOL处理期间减少半导体衬底的污染

Reducing contamination of semiconductor substrates during BEOL processing by performing a deposition/etch cycle during barrier deposition
摘要:
A conductive barrier material of a metallization system of a semiconductor device may be formed on the basis of one or more deposition/etch cycles, thereby providing a reduced material thickness in the bevel region, while enhancing overall thickness uniformity in the active region of the semiconductor substrate. In some illustrative embodiments, two or more deposition/etch cycles may be used, thereby providing the possibility to select reduced target values for the barrier thickness in the die regions, while also obtaining a significantly reduced thickness in the bevel region.
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