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Semiconductor device with buried local interconnects
专利权人:
International Business Machines Corporation
发明人:
Leobandung Effendi,Yamashita Tenko
申请号:
US201414548648
公开号:
US9953857(B2)
申请日:
2014.11.20
申请国别(地区):
美国
年份:
2018
代理人:
Harmon, Jr. Gilbert
摘要:
Embodiments of the present invention provide methods for fabricating a semiconductor device with buried local interconnects. One method may include providing a semiconductor substrate with fins etched into the semiconductor substrate; forming a first set of spacers along the sides of the fins; depositing a tungsten film over the top surface of the substrate; etching the tungsten film to form a buried local interconnect; forming a set of gates and a second set of spacers; forming a source and drain region adjacent to the fins; depositing a first insulating material over the top surface of the substrate; and creating contact between the set of gates and the source and drain region using an upper buried local interconnect.
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