Samsung Sdi Co., Inc.

Jun-Hyung Kim

Myeong-Seob So

Jin-sung Kim

Jun-Young Lee

Jin-Sung Kim

Nam-Sung Jung

Kazuhiro Ito

Byung-Nam An

Jae-Yeol Kim

A flat display device may include a plurality of electrodes arranged in one direction, a first transistor coupled between the plurality of electrodes and a first power source for supplying a first voltage, and a gate driving circuit for supplying a driving voltage to a gate of the first transistor through a push-pull circuit including second and third transistors coupled between second and third power sources for respectively supplying second and third power sources, wherein a resistance formed between the second transistor and the second power source is greater than that formed between the third transistor and the third power source.

Gate driving device and flat display device employing such a gate driving device

A PDP address driver circuit includes: an inductor coupled to a conductive pattern. A first current applier applyies a current of a first direction to the inductor and the conductive pattern while sustaining a panel capacitor at an address voltage. A discharger generates a resonance between the inductor and the panel capacitor to discharge the panel capacitor to 0V, while the current of the first direction flows to the inductor and the conductive pattern. A second current applier applyies a current of a second direction to the inductor and the conductive pattern while sustaining the panel capacitor at 0V. A charger generates a resonance between the inductor and the panel capacitor to charge the panel capacitor to the address voltage, while the current of the second direction flows to the inductor and the conductive pattern.

Plasma display panel and apparatus and method for driving the same

A driving apparatus of a plasma display panel includes an energy recovery circuit. The energy recovery circuit recovers charging/discharging energies of a panel capacitor to a power source supplying unit using a transformer according to charging/discharging operations of the panel capacitor. It includes a first controlling switch, a second controlling switch, and a transformer. The second controlling switch is connected between the panel capacitor and the power source supplying unit and switched according to an external control signal to control the energy recovery from the panel capacitor to the power source supplying unit. The first controlling switch is connected between the panel capacitor and the power source supplying unit and switched according to an external control signal to control the energy recovered in the power source supplying unit to be supplied to the panel capacitor. The transformer is connected between the first controlling switch and the second controlling switch and the panel capacitor so that resonance current flows on a primary inductor by the switching operations of the first controlling switch and the second controlling switch, and induced current induced by the resonance current flowing on a secondary inductor flows to a direction compensating the resonance current through the first controlling switch and the second controlling switch.

Energy recovery circuit of plasma display panel and driving apparatus of plasma display panel including energy recovery circuit

An apparatus for driving a plasma display panel that includes first and second signal lines for supplying first and second voltages, respectively, and first and second inductors coupled to one terminal of a panel capacitor. A first current path is formed from the panel capacitor to the second signal line via the second inductor to drop the voltage of the panel capacitor from the first voltage to the second voltage. A second current path is formed to recover the current flowing to the second inductor towards the first signal line, while the voltage of the panel capacitor is sustained at the second voltage. A third current path is formed from the first signal line to the panel capacitor via the first inductor while the current flowing to the second inductor is recovered, to raise the voltage of the panel capacitor from the second voltage to the first voltage. A fourth current is also formed to recover the current flowing to the first inductor towards the first signal line, while the voltage of the panel capacitor is sustained at the first voltage.

Growing community of inventors

Asan, South Korea

Jun-Hyung Kim