Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – On insulating substrate or layer
Reexamination Certificate
2005-01-11
2005-01-11
Nelms, David (Department: 2818)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
On insulating substrate or layer
C438S154000, C438S223000, C438S224000, C438S227000, C438S228000, C257S265000, C257S351000, C257S371000
Reexamination Certificate
active
06841430
ABSTRACT:
A semiconductor device with p-channel and n-channel field effect devices formed on a common substrate, where the drain and source regions of the n-channel field effect device are formed within a silicon epitaxial layer formed on a silicon layer germanium relax which is formed on a silicon germanium buffer layer with a graduated germanium concentration. Additionally, drain and source regions of the p-channel field effect device are formed within a silicon-germanium compound layer formed on the substrate and the silicon epitaxial cap layer formed on the silicon-germanium compound layer.
REFERENCES:
patent: 5847419 (1998-12-01), Imai et al.
patent: 6190975 (2001-02-01), Kubo et al.
Noguchi Takashi
Sugawara Minoru
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