Display-panel drive circuit

Details Display-panel drive circuit Display-panel drive circuit

1995-03-17

1998-02-03

Pascal, Robert

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151693, 313585, 313586, 345211, 345212, G09G 500

Patent

active

057148449

ABSTRACT:
A type of display-panel drive circuit that reduces the power rating in the IC section so the circuit can be formed using IC. A level shift circuit converts a signal S2 from high level to low level or from low level to high voltage level V.sub.H and outputs it as S2'. A first transistor XSC connects an output terminal HVO1 to ground when signal S2 is high level. A second transistor XSU remains nonconductive when the output of the level shift circuit is low level but connects an external signal input terminal VSU to output terminal HVO1 when the output of the level shift circuit is at high voltage level V.sub.H. A third transistor XSD connects an external signal input terminal VSD to output terminal HVO1 when signal S3 is low level and signal S3' is high level but remains nonconductive when both S3 and S3' are low level.

REFERENCES:
patent: 5032829 (1991-07-01), Shoji et al.
patent: 5446344 (1995-08-01), Kanazawa

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