Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2008-01-31
2008-11-04
Pham, Hoai V. (Department: 2892)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C438S386000, C257SE21651
Reexamination Certificate
active
07445988
ABSTRACT:
A trench device and method for fabricating same are provided. The trench device has a collar with a first portion that is doped and a second portion that is undoped. Fabrication of the partially doped collar can be done by deposition of a doped insulator in the trench, removal of a portion of the doped deposition, deposition of an undoped insulator in the trench and removal of a portion of the doped and undoped insulators.
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Cheng Kangguo
Wang Geng
Capella, Esq. Steven
International Business Machines - Corporation
Ohlandt Greeley Ruggiero & Perle L.L.P.
Pham Hoai V.
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