Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2006-03-07
2006-03-07
Cao, Phat X. (Department: 2814)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S362000
Reexamination Certificate
active
07009256
ABSTRACT:
A monolithically integratable semiconductor structure serves for over-voltage protection in an integrated circuit or as a normal diode. The structure includes an insulating layer between a substrate and a semiconductor layer of first conductivity type, and several layers formed in the semiconductor layer. First and second layers of second conductivity type are spaced apart from one another. A third layer of first conductivity type contacts the second layer. A fourth layer of first conductivity type directly contacts and surrounds the second and third layers. A fifth layer of first conductivity type and higher dopant concentration than the semiconductor layer is disposed under the first layer. The first layer surrounds the second, third and fourth layers essentially in a ring-shape. A first electrode contacts the first layer. A second electrode contacts the second and third layers.
REFERENCES:
patent: 4862310 (1989-08-01), Harrington, III
patent: 5241210 (1993-08-01), Nakagawa et al.
patent: 6242763 (2001-06-01), Chen et al.
patent: 6268639 (2001-07-01), Li et al.
patent: 2002/0063289 (2002-05-01), Su et al.
patent: 2002/0153564 (2002-10-01), Shirai
patent: 2003/0162375 (2003-08-01), Chen et al.
patent: 2005/0110095 (2005-05-01), Shih et al.
patent: 61035568 (1986-02-01), None
Dietz Franz
Graf Michael
Atmel Germany GmbH
Cao Phat X.
Fasse W. F.
Fasse W. G.
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