Nanotube ESD protective devices and corresponding...

Details Nanotube ESD protective devices and corresponding... Nanotube ESD protective devices and corresponding...

2009-07-27

2010-11-23

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

07839615

ABSTRACT:
Nanotube ESD protective devices and corresponding nonvolatile and volatile nanotube switches. An electrostatic discharge (ESD) protection circuit for protecting a protected circuit is coupled to an input pad. The ESD circuit includes a nanotube switch electrically having a control. The switch is coupled to the protected circuit and to a discharge path. The nanotube switch is controllable, in response to electrical stimulation of the control, between a de-activated state and an activated state. The activated state creates a current path so that a signal on the input pad flows to the discharge path to cause the signal at the input pad to remain within a predefined operable range for the protected circuit. The nanotube switch, the input pad, and the protected circuit may be on a semiconductor chip. The nanotube switch may be on a chip carrier. The deactivated and activated states may be volatile or non-volatile depending on the embodiment. The ESD circuit may be repeatedly programmed between the activated and deactivated states so as to repeatedly activate and deactivate ESD protection of the protected circuit. The nanotube switch provides protection based on the magnitude of the signal on the input pad.

REFERENCES:
patent: 7567414 (2009-07-01), Bertin et al.
patent: 2002/0130353 (2002-09-01), Lieber et al.
patent: 2003/0124837 (2003-07-01), Rueckes et al.
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patent: 2005/0275070 (2005-12-01), Hollingsworth
patent: 2006/0237537 (2006-10-01), Empedocles et al.
patent: 2004050339 (2004-06-01), None
patent: WO-0048195 (2000-08-01), None

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