Plasma display device, power device thereof, and driving method thereof
AssigneeSamsung SDI Co., Ltd.
InventorJae-Seok Jeong
Life of this patent
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Abstract
A power supply for a plasma display device controls an output voltage by using a voltage divided by first resistors coupled to an output terminal, and outputs the output voltage as a driving voltage for driving a PDP. The output voltage is changed by varying a resistance of at least one first resistor from among the first resistors according to a temperature of the PDP.
Claims20
A power supply for a display panel, comprising:
- a transformer including a primary coil coupled to an input power and a secondary coil coupled to an output terminal;
- a first switch coupled to the primary coil and determining a voltage output to the output terminal according to a duty ratio;
- a plurality of first resistors coupled in series with each other and to the output terminal;
- a variable resistor controller for determining a resistance of at least one first resistor in response to a temperature;
- a feedback circuit for determining a feedback voltage in response to a voltage divided by the first resistors;
- and
- a feedback controller for determining the duty ratio of the first switch in response to the feedback voltage.
A plasma display device, comprising:
- a plasma display panel (PDP) including a plurality of first electrodes and a plurality of second electrodes, and in which discharge cells are formed corresponding to points where the first electrodes and the second electrodes cross;
- a driver for driving electrodes of the PDP;
- a temperature detector for detecting a temperature;
- and
- a power supply,
- wherein the power supply controls an output voltage of the power supply by using a voltage divided by a plurality of first resistors coupled to an output terminal of the power supply, outputs the output voltage as a driving voltage of the driver, and varies resistance of at least one first resistor according to the temperature detected by the temperature detector.
A method for driving a display panel including a plurality of first electrodes, a plurality of second electrodes arranged crossing the first electrodes, and a plurality of discharge cells corresponding to points where the first electrodes and the second electrodes cross, the method comprising:
- applying a voltage to a first electrode;
- detecting a temperature;
- and
- adjusting the voltage applied to the first electrode according to the detected temperature.
Dependencies are inferred from the claim text.