Power supply method and power supply circuit

Details Power supply method and power supply circuit Power supply method and power supply circuit

2007-10-23

2007-10-23

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S087000, C345S100000, C345S212000, C345S213000

Reexamination Certificate

active

10726006

ABSTRACT:
A power supply method of supplying a high-potential drive power voltage to a data line driver circuit which drives a plurality of data lines in a display panel which has a plurality of pixels and a plurality of scanning lines in addition to the data lines. An output from the data line driver circuit to the data lines is set to a high-impedance state, and a charge corresponding to a charge discharged from the data lines is accumulated in a parasitic capacitor of a power line of a regulator which outputs a drive power voltage to be supplied to the data line driver circuit, within a given period. After the period, a voltage generated by the charge accumulated in the parasitic capacitor is output to the power line, and a voltage generated by the regulator is supplied to the data line driver circuit as the high-potential drive power voltage for the data line driver circuit.

REFERENCES:
patent: 6784866 (2004-08-01), Udo et al.
patent: 2002-023709 (2002-01-01), None

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