Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device – Device protection
Reexamination Certificate
2007-03-26
2009-10-13
Purvis, Sue (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Regenerative type switching device
Device protection
C257S174000, C257SE29181
Reexamination Certificate
active
07601991
ABSTRACT:
A complementary SCR-based structure enables a tunable holding voltage for robust and versatile ESD protection. The structureare n-channel high-holding-voltage low-voltage -trigger silicon controller rectifier (N-HHLVTSCR) device and p-channel high-holding-voltage low-voltage -trigger silicon controller rectifier (P-HHLVTSCR) device. The regions of the N-HHLVTSCR and P-HHLVTSCR devices are formed during normal processing steps in a CMOS or BICMOS process. The spacing and dimensions of the doped regions of N-HHLVTSCR and P-HHLVTSCR devices are used to produce the desired characteristics. The tunable HHLVTSCRs makes possible the use of this protection circuit in a broad range of ESD applications including protecting integrated circuits where the I/O signal swing can be either within the range of the bias of the internal circuit or below/above the range of the bias of the internal circuit.
REFERENCES:
patent: 5648281 (1997-07-01), Williams et al.
patent: 5670799 (1997-09-01), Croft
patent: 5719733 (1998-02-01), Wei et al.
patent: 5903420 (1999-05-01), Ham
patent: 6281527 (2001-08-01), Chen
patent: 6498357 (2002-12-01), Ker et al.
patent: 6770918 (2004-08-01), Russ et al.
Bernier Joseph C.
Liou Juin J.
Salcedo Javier A.
Whitney, Jr. Donald K.
Intersil America's Inc.
MH2 Technology Law Group LLP
Purvis Sue
Sandvik Benjamin P
University of Central Florida
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