Gas shielding during plating

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

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Details

438687, 438782, 204224, 204297, H01L 2144

Patent

active

061627267

ABSTRACT:
Gas shielding is employed to prevent metal plating on contacts during electroplating to reduce particulate contamination and increase thickness uniformity. In another embodiment, gas shielding is employed to prevent deposition on the backside and edges of a semiconductor wafer during plating.

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