Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate
Reexamination Certificate
2007-09-04
2007-09-04
Smith, Zandra V. (Department: 2822)
Semiconductor device manufacturing: process
Making field effect device having pair of active regions...
Having insulated gate
C438S203000, C438S969000, C438S417000, C438S322000
Reexamination Certificate
active
10863630
ABSTRACT:
The invention includes a method and resulting structure for fabricating high performance vertical NPN and PNP transistors for use in BiCMOS devices. The resulting high performance vertical PNP transistor includes an emitter region including silicon and germanium, and has its PNP emitter sharing a single layer of silicon with the NPN transistor's base. The method adds two additional masking steps to conventional fabrication processes for CMOS and bipolar devices, thus representing minor additions to the entire process flow. The resulting structure significantly enhances PNP device performance.
REFERENCES:
patent: 5426316 (1995-06-01), Mohammad
patent: 5837590 (1998-11-01), Latham et al.
patent: 6337252 (2002-01-01), Yoshida
patent: 6759303 (2004-07-01), Cartagena
Gray Peter B.
Johnson Jeffrey B.
Barnes Seth
Canale Anthony J.
Hoffman Warnick & D'Alessandro LLC
Smith Zandra V.
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