Patent ID: 6538627
Filing Date: 2003-03-25
Classification: G09G

Abstract:
A driving circuit for AC PDPs comprising sustain electrodes which are divided into at least two groups X (x1, x2, x3 . . . xn) and Y (y1, y2, y3 . . . yn) according to the locations of their respective voltage input terminals and provided with a capacitance between every two opposing electrodes (e.g., x1 and y1), wherein said X group and Y group electrodes form two subgroups X1 and X2, and Y1 and Y2 with the same or different number of electrodes, which have the corresponding drive circuits and two different levels of driving voltages V1 and V2 (where V1>V2) are applied to said capacitance so that the potential differences therebetween may cause to make plasma discharging in the corresponding sub-pixels;further comprising a first and a second sustain drivers which are respectively connected to voltage input terminals for the subgroups X1 and X2 of said sustain electrodes, and a first and a second scan drivers which are respectively connected to the voltage input terminals for the subgroups Y1 and Y2 of said sustain electrodes, and a third and a fourth sustain drivers which are respectively connected to said first and second scan drivers, wherein two energy recovery circuits having one or two inductors and a plurality of switch elements are respectively connected between said first and second sustain drivers and between said third and fourth sustain drivers.