Analog buffer and method for driving the same

Details Analog buffer and method for driving the same Analog buffer and method for driving the same

2006-11-07

2006-11-07

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S108000

Reexamination Certificate

active

07132862

ABSTRACT:
In an analog buffer and a method for driving the same, by providing a pair of switches at a last comparing unit, a voltage level of an output signal is precharged as high as a source voltage level during a first offset period in an Nth initializing period, the voltage level of the output signal is discharged as high as a voltage level of a desired data signal during a discharging period in an Nth signal-applied period, then, the discharged voltage of the output signal, which overshoots a desired data voltage is compensated during a second offset period in the Nth signal-applied period to thereby output an accurate data voltage. In addition, by providing the pair of switches at the last comparing unit, a voltage level of an output signal is discharged to a ground potential during a first offset period in an N+1th initializing period, the voltage level of the output signal is charged as high as a voltage level of the desired data signal during a charging period of an N+1th signal-applied period, then the charged voltage of the output signal, which overshoots a desired data voltage, is compensated during a second offset period to thereby output an accurate data voltage. Accordingly, by the analog buffer and the method for driving the same, a flat panel display device driven by an inversion method can correctly implement a desired color, and thus its image quality can be improved.

REFERENCES:
patent: 5410269 (1995-04-01), Ohie et al.
patent: 5920209 (1999-07-01), Kusumoto et al.
patent: 2005/0140625 (2005-06-01), Kim et al.

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