Gate contact over active processes

A semiconductor device fabrication process includes forming gates on a substrate having a plurality of openings, each gate having a conducting layer a first metal and a gate dielectric layer of a first dielectric material, partially filling the openings with a second dielectric material, forming a f...

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Bibliographische Detailangaben
Hauptverfasser: Wang, Xikun, Thareja, Gaurav, Wang, Anchuan, Kashefizadeh, Keyvan, Wu, Dong, Natarajan, Sanjay, Seutter, Sean M
Format: Patent
Sprache:eng
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Zusammenfassung:A semiconductor device fabrication process includes forming gates on a substrate having a plurality of openings, each gate having a conducting layer a first metal and a gate dielectric layer of a first dielectric material, partially filling the openings with a second dielectric material, forming a first structure on the substrate in a processing system without breaking vacuum, depositing a third dielectric material over the first structure, and forming a planarized surface of the gates and a surface of the third dielectric material that is disposed over the first structure. The forming of the first structure includes forming trenches by removing second portions of the second dielectric material within each opening, forming recessed active regions in the trenches by partially filling the trenches with a second metal, forming a liner over each recessed active region, and forming a metal cap layer over each liner.