Thin film transistor electrostatic discharge protective circuit

Details Thin film transistor electrostatic discharge protective circuit Thin film transistor electrostatic discharge protective circuit

2006-03-28

2006-03-28

Parker, Kenneth (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S192000

Reexamination Certificate

active

07019796

ABSTRACT:
A TFT ESD protective circuit disposed between a scanning signal line or a data signal line and a Vcom. The protective circuit includes a positive ESD protective unit and a negative ESD protective unit. Each of the positive static protective unit and negative static protective unit is composed of three TFT. In the case that the gate insulating layer of any of the three TFT is broken down by electrostatic voltage, the remaining two TFT can still normally operate and keep truly providing static protective function.

REFERENCES:
patent: 5373377 (1994-12-01), Ogawa et al.
patent: 5671026 (1997-09-01), Shiraki et al.
patent: 5909035 (1999-06-01), Kim
patent: 6388719 (2002-05-01), Matsunaga et al.
patent: 6690433 (2004-02-01), Yoo et al.

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