Off-state voltage generating circuit capable of regulating the m

Details Off-state voltage generating circuit capable of regulating the m Off-state voltage generating circuit capable of regulating the m

1996-12-13

1999-02-23

Hecker, Stuart N.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

345100, G05F 140, G09G 336

Patent

active

058748288

ABSTRACT:
An OFF-state voltage generating circuit regulates an OFF-state voltage level, for thin film transistors (TFT) in a liquid crystal display (LCD). A voltage generator receives a common voltage signal and an inverted common voltage signal and generates an OFF-state voltage to turn off the TFT of an LCD. A voltage regulator adjusts the level of the voltage from the voltage generator by varying the resistance of a variable resistor. A timing circuit keeps the voltage regulator from operating for a time during the initial ON-state of the power supply.

REFERENCES:
patent: 4716359 (1987-12-01), Numata et al.
patent: 5402142 (1995-03-01), Okada et al.
patent: 5574474 (1996-11-01), Tamanoi
patent: 5621439 (1997-04-01), Okada et al.

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