Plasma display device and driving method thereof
AssigneeSamsung SDI Co., Ltd.
InventorsJun-Young Lee, Jae-Woon Lee
Life of this patent
Estimating the term…
Abstract
In a plasma display device and driving method thereof, a voltage of a power recovery capacitor at rising voltage is established to be higher than a middle voltage of a sustain discharge voltage, and a voltage of the capacitor at falling voltage is established to be lower than the middle voltage thereof in a power recovery circuit. Therefore, the time used for voltage rising and voltage falling in the power recovery operation is reduced.
Claims16
A plasma display device, comprising:
- a panel including a plurality of first electrodes and second electrodes;
- and
- a driving circuit for outputting a signal for driving the first electrodes;
- wherein the driving circuit comprises:
- a first switch coupled between a first power source and the first electrodes for supplying a first voltage to the first electrodes in a sustain period;
- a second switch coupled between a second power source and the first electrodes for supplying a second voltage, lower than the first voltage, to the first electrodes in the sustain period;
- at least one inductor having a first terminal coupled to the first electrodes;
- a third power source for supplying a third voltage, which is higher than half a difference between the first voltage and the second voltage;
- a third switch having a first terminal coupled to the third power source and a second terminal coupled to a second terminal of said at least one inductor;
- a fourth power source for supplying a fourth voltage, which is lower than half the difference between the first voltage and the second voltage;
- and
- a fourth switch having a first terminal coupled to the fourth power source and a second terminal coupled to the second terminal of said at least one inductor.
A plasma display device, comprising:
- a panel including a plurality of first electrodes and second electrodes;
- and
- a driving circuit for outputting a signal for driving the first electrodes;
- wherein the driving circuit comprises:
- at least one inductor having a first terminal coupled to the first electrodes;
- and
- a first capacitor, a floating power source, and a second capacitor coupled in series between a first power source for supplying a first voltage and a second power source for supplying a second voltage;
- wherein a first path is formed from a node between the first capacitor and the floating power source to said at least one inductor, and increases a voltage at the first electrodes;
- wherein a second path is formed for applying a third voltage, supplied by a third power source to the first electrodes;
- wherein a third path is formed from said at least one inductor to a node between the floating power source and the second capacitor, and reduces a voltage at the first electrodes;
- and
- wherein a fourth path is formed for applying a fourth voltage, supplied by a fourth power source, to the first electrodes.
A plasma display device driving method which uses an inductor coupled to a first electrode and alternately applies a first voltage and a second voltage to the first electrode, and wherein a panel capacitor is formed by the first electrode and a second electrode, the method comprising the steps of:
- using a third voltage, which is higher than an average of the first voltage and the second voltage, to generate resonance between the panel capacitor and the inductor, and increasing a voltage at the first electrode;
- applying the first voltage to the first electrode;
- using a fourth voltage, which is lower than the average of the first voltage and the second voltage, to generate resonance between the panel capacitor and the inductor, and decreasing a voltage at the first electrode;
- and
- applying the second voltage to the first electrode.
Dependencies are inferred from the claim text.