Self-aligned gate contact formation
AssigneeGlobalfoundries Inc.
InventorsGuillaume Bouche, Andy Chih-Hung Wei, Gabriel Padron Wells, Andre P. Labonte, Jing Wan
Life of this patent
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AssigneeGlobalfoundries Inc.
InventorsGuillaume Bouche, Andy Chih-Hung Wei, Gabriel Padron Wells, Andre P. Labonte, Jing Wan
Estimating the term…
Provided are approaches for forming gate and source/drain (S/D) contacts. Specifically, a gate contact opening is formed over at least one of a set of gate structures, a set of S/D contact openings is formed over fins of the semiconductor device, and a metal material is deposited over the semiconductor device to form a gate contact within the gate contact opening and a set of S/D contacts within the set of S/D contact openings. In one approach, nitride remains between the gate contact and at least one of the S/D contacts. In another approach, the device includes merged gate and S/D contacts. This approach provides selective etching to partition areas where oxide will be further removed selectively to nitride to create cavities to metallize and create contact to the S/D, while isolation areas between contact areas are enclosed in nitride and do not get removed during the oxide etch.
A method of forming a semiconductor device, the method comprising:
A method for forming self-aligned contacts in a semiconductor device, the method comprising:
A semiconductor device including a set of self-aligned contacts, the semiconductor device comprising:
Dependencies are inferred from the claim text.