Plasma display device and driving method thereof
AssigneeSamsung SDI Co., Ltd.
InventorJoo-Yul Lee
Life of this patent
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Abstract
During a sustain period of a plasma display device, voltages of Vs and 0V are alternately applied to a plurality of scan electrodes. At this time, by applying Vs to a first node, a first capacitor with a first terminal coupled to the first node is charged with a first voltage. By then applying 0V to the first node, a second capacitor with a first terminal is coupled to a second node with a voltage of a second terminal of the first capacitor is charged with a second voltage. In an address period, a voltage of the second node is selectively applied to a plurality of scan electrodes. Therefore, an additional power source for supplying a voltage to selectively apply to a plurality of scan electrodes in an address period is not necessary.
Claims21
A plasma display device comprising:
- a plurality of scan electrodes;
- a first transistor coupled between a first power source for supplying a first voltage and a first node;
- a second transistor coupled between a second power source for supplying a second voltage that is lower than the first voltage and the first node;
- a plurality of scan circuits respectively coupled to the plurality of scan electrodes, wherein the plurality of scan circuits are adapted to selectively apply a voltage of a first input terminal and a second input terminal of the scan circuits to a corresponding one of the scan electrodes;
- a first capacitor comprising a first terminal coupled to the first node;
- a first diode coupled between a second terminal of the first capacitor and the second power source, wherein the first diode is in a path for charging the first capacitor when the first transistor is turned on;
- and
- a third transistor coupled between the second input terminal of the plurality of scan circuits and the second terminal of the first capacitor.
A method of driving a plasma display device including a plurality of scan electrodes, comprising:
- applying a first voltage to a first node to charge a first capacitor having a first terminal connected to the first node with a second voltage;
- applying a third voltage to the first node to charge a second capacitor having a first terminal coupled to a second node with a fourth voltage, wherein the second node has a voltage of a second terminal of the first capacitor;
- and
- selectively applying a voltage of the second node to the plurality of scan electrodes during an address period.
A method of driving a plasma display device including a plurality of scan electrodes, comprising:
- charging a first capacitor having a first terminal coupled to a first node with a second voltage by applying a first voltage to the first node;
- and
- selectively applying a voltage of a second terminal of the first capacitor to the plurality of scan electrodes by applying a third voltage to the first node in an address period.
Dependencies are inferred from the claim text.