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US 7,125,763 B1Granted
Silicided buried bitline process for a non-volatile memory cell
AssigneeSpansion LLC
InventorsDaniel Sobek, Timothy J. Thurgate, Mark W. Randolph
Life of this patent
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Abstract
A process of fabricating a memory cell that includes a substrate that has a first region and a second region with a channel therebetween by forming a gate above the channel of the substrate, forming a bitline and siliciding the bitline.
Claims14
A process of fabricating a memory cell comprising a substrate that comprises a first region and a second region with a channel therebetween, the method comprising:
- forming a gate above said channel of said substrate, wherein said gate comprises a single polysilicon layer;
- forming bitlines on both sides of said gate subsequent to said forming said gate comprising said single polysilicon layer;
- siliciding said bitlines;
- forming a charge trapping region that contains a first amount of charge;
- and
- forming a layer between said channel and said charge trapping region, wherein said layer has a thickness such that said first amount of charge is prevented from directly tunneling into said layer.
3 more elements
Dependencies are inferred from the claim text.