Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2006-03-07
2006-03-07
Potter, Roy (Department: 2822)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S499000
Reexamination Certificate
active
07009261
ABSTRACT:
A semiconductor device includes a p−-silicon substrate, n−-epitaxial growth layers on the p−-silicon substrate, a field insulating film at the surface of the n−-epitaxial growth layer, an npn transistor formed at the n−-epitaxial growth layer, an pnp transistor formed at the n−-epitaxial growth layer, a DMOS transistor on the n−-epitaxial growth layer, and a resistance. The DMOS transistor includes an n+-diffusion layer forming a source, a p-type diffusion layer forming a back gate region, a lightly doped n-type diffusion layer forming a drain, and a heavily doped n+-diffusion layer forming the drain.
REFERENCES:
patent: 6359318 (2002-03-01), Yamamoto et al.
patent: 3-104270 (1991-05-01), None
patent: 5-3293 (1993-01-01), None
patent: 8-227945 (1996-09-01), None
patent: 2002-198448 (2002-07-01), None
McDermott Will & Emery LLP
Potter Roy
Renesas Technology Corp.
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