Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2007-05-15
2007-05-15
Chen, Jack (Department: 2813)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C438S962000, C438S488000
Reexamination Certificate
active
11027516
ABSTRACT:
The disclosure provides methods of forming a silicon quantum dots for application in a semiconductor memory device. One example method includes sequentially forming a pad oxide film and a sacrificial insulation film on a silicon substrate; forming a wall layer by selectively etching the sacrificial insulation film; forming a spacer at the side wall of the wall layer; etching the silicon substrate as much as a predetermined thickness using the spacer as a mask, thereby forming a silicon pattern; forming a barrier film for burying the upper surface and the side surface of the silicon pattern; applying isotropic etching to the substrate using the barrier film as a mask; and oxidizing the isotropic etched substrate with thermal treatment.
REFERENCES:
patent: 6346436 (2002-02-01), Fukushima et al.
patent: 6351007 (2002-02-01), Fukushima et al.
patent: 10-2000-057981 (2000-09-01), None
patent: 10-2001-104946 (2001-11-01), None
Chen Jack
Dongbu Electronics Co. Ltd.
Fortney Andrew D.
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