Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Patent
1997-10-31
1999-09-14
Nguyen, Tuan H.
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
438397, H01L 218242
Patent
active
059536098
ABSTRACT:
A storage node electrode is connected to a contact plug via an upper node contact hole. A lower cell plate electrode composed of an N type silicon film and an N type silicon film spacer is covered by the storage node electrode via a titanium oxide film as a lower capacitive insulating film and an upper cell plate electrode composed of an N type silicon film connected to the lower cell plate electrode covers the storage node electrode via a titanium oxide film as an upper capacitive insulating film. Thus, in a DRAM having a stacked and COB type memory, a surface ratio of the storage node electrode, contributing to a capacitor, is increased.
Drynan John Mark
Koyama Kuniaki
NEC Corporation
Nguyen Tuan H.
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