Patent ID: 7319441

Claim:
A supply device for supplying an array of electrodes of a plasma display panel provided with a two-dimensional matrix of discharge cells, the supply device comprising: a sustain pulse generator which generates, between a reference terminal and at least one supply terminal that can be connected to the electrodes, positive sustain pulses, the sustain pulse generator being provided with a module for recovering or re-injecting, using a resonant inductor, capacitive energy at the rising or falling edges of said positive sustain pulses, wherein the sustain pulse generator allows electrical current to flow between the reference terminal and the supply terminal of the sustain pulse generator when a negative voltage is applied between the supply terminal and the reference terminal; at least one negative voltage generator which generates a negative voltage between the reference terminal and a second supply terminal that can be connected to the electrodes; for each electrode of the array, a driver which connects, on command, the supply terminal of the sustain pulse generator and/or the second supply terminal of the at least one negative voltage generator to the electrode, the driver comprising: two driver diodes in series, oriented so as to be conducting in the same direction from a low power terminal of the series, common to all the drivers, to an upper power terminal of the series, common to all the drivers, a common point of the driver diodes being connected to the electrode; and two driver switches in series, a common point of the driver switches being connected to the electrode, outermost terminals of the driver switches being common to all the drivers and including an upper switched terminal and a lower switched terminal, the lower switched terminal being connected directly to the second supply terminal of the negative voltage generator, wherein the supply device further comprises a power switch between the upper power terminal of the drivers and the lower power terminal, and wherein the supply terminal of the sustain pulse generator is connected directly and without an intermediate switch to the upper power terminal of the drivers.