Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device – Device protection
Reexamination Certificate
2007-03-27
2007-03-27
Jackson, Jerome (Department: 2815)
Active solid-state devices (e.g., transistors, solid-state diode
Regenerative type switching device
Device protection
C257S122000, C257S141000, C257S162000, C257SE29225
Reexamination Certificate
active
10734921
ABSTRACT:
In a high voltage ESD protection solution, a plurality of DIACs are connected together to define a cascaded structure with isolation regions provided to prevent n-well and p-well punch through. An p-ring surrounds the DIACs and provides a ground for the substrate in which the DIACs are formed.
REFERENCES:
patent: 4309715 (1982-01-01), MacPherson et al.
patent: 5576557 (1996-11-01), Ker et al.
patent: 6258634 (2001-07-01), Wang et al.
patent: 2005/0045909 (2005-03-01), Zhang
Hopper Peter J.
Kindt Willem
Vashchenko Vladislav
Jackson Jerome
National Semiconductor Corporation
Vollrath Jurgen
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