Forming semiconductor cells with regions of varying conductivity

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United States of America Patent

PATENT NO RE47381
SERIAL NO

15055416

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Abstract

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id='REI-00001' date='20190507' A semiconductor memory cell and arrays of memory cells are providedid='REI-00001' In at least one embodiment, a memory cell includes a substrate id='REI-00002' date='20190507' having a top surface, the substrateid='REI-00002' having a first conductivity type selected from a p-type conductivity type and an n-type conductivity type; a first region having a second conductivity type id='REI-00003' date='20190507' selected from the p-type and n-type conductivity types, the second conductivity type beingid='REI-00003' different from the first conductivity typeid='REI-00004' date='20190507' , the first region being formed in the substrate and exposed at the top surfaceid='REI-00004' ; a second region having the second conductivity typeid='REI-00005' date='20190507' , the second region being formed in the substrate, spaced apart from the first region and exposed at the top surfaceid='REI-00005' ; a buried layer id='REI-00006' date='20190507' in the substrateid='REI-00006' below the first and second regionsid='REI-00007' date='20190507' , spaced apart from the first and second regionsid='REI-00007' and having the second conductivity type; a body region formed between the first and second regions and the buried layerid='REI-00008' date='20190507' , the body regionid='REI-00008' id='REI-00009' date='20190507' and id='REI-00009' having the first conductivity type; id='REI-00010' date='20190507' and id='REI-00010' a gate positioned between the first and second regions and above the top surface; id='REI-00011' date='20190507' wherein a state of the body region is maintained by applying a voltage to the substrate id='REI-00011' and a nonvolatile memory configured to store data upon transfer from the body region.

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Patent Owner(s)

Patent OwnerAddress
ZENO SEMICONDUCTOR INC830 STEWART DRIVE #104 SUNNYVALE CA 94085

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Widjaja, Yuniarto Cupertino, US 265 29705

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