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Journals and Conferences
In this article, a case of Spin-on-Glass (SOG) process-induced tungsten residue was reported. The case was found after the tungsten etchback process of filling vias. A possible failure mechanism was proposed. Based on the review of our process flow, it is believed that the tungsten residue might result from the hydrodynamic effects of SOG. q 2004 Elsevier… (More)