Latch-up protection circuit for LCD driver IC

Details Latch-up protection circuit for LCD driver IC Latch-up protection circuit for LCD driver IC

2008-03-27

2010-10-19

Leja, Ronald W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

07817388

ABSTRACT:
A latch-up protection circuit for LCD driver is provided. The latch-up protection circuit for LCD driver comprises an NMOS, a switch and a capacitor. The NMOS comprises a drain electrically connected to a ground; a source electrically connected to a negative voltage source; and a gate. The switch is electrically connected to the gate to receive a control signal, wherein the switch switches between a positive voltage source and the negative voltage source according to the control signal; and the capacitor is electrically connected to the positive voltage source and the gate.

REFERENCES:
patent: 7061291 (2006-06-01), Jacobs et al.
patent: 7385578 (2008-06-01), Chang et al.
patent: 7528672 (2009-05-01), Darrer et al.
patent: 2003/0085664 (2003-05-01), Bae
patent: 2005/0052209 (2005-03-01), Jacobs et al.
patent: 2005/0227396 (2005-10-01), Chang et al.
patent: 2006/0066252 (2006-03-01), Kim
patent: 2007/0103826 (2007-05-01), Hung et al.

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