US 2008/0174586 A1Published application

Power supply apparatus for a plasma display device

OwnerBong-Eun Yoon, Kyong-Pil Jininventors

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Abstract

A plasma display device and a power supply thereof is provided. The power supply includes a power supply unit, a first output unit, a second output unit and a converter. The power supply unit includes a switching transistor, which is coupled to a primary coil of a transformer for transforming an input voltage, and provides power to a first secondary coil and a second secondary coil of the transformer according to operation of the switching transistor. The first output unit outputs a first voltage generated at the first secondary coil of the transformer, and a second voltage generated by decreasing the first voltage. The second output unit outputs a third voltage generated at the second secondary coil. The converter generates fourth and fifth voltages by converting a voltage that is higher than the second voltage and is generated by using the first and second voltages.

Claims16

Dependent claims

A power supply for driving a plasma display device, the power supply comprising:

a first converter for receiving an input voltage and generating a first voltage, a second voltage lower than the first voltage, and a third voltage;
and
a second converter coupled to the first converter, the second converter for converting the first voltage and the second voltage into a fourth voltage and a fifth voltage lower than the fourth voltage,
wherein the first converter includes:
a power supply unit having a switching transistor coupled to a primary coil of a transformer for transforming the input voltage and supplying power to a first secondary coil and a second secondary coil of the transformer responsive to operation of the switching transistor;
a first output unit including the first secondary coil of the transformer, the first output unit for outputting the first voltage and the second voltage generated at the first secondary coil;
and
a second output unit including the second secondary coil of the transformer, the second output unit for outputting the third voltage generated at the second secondary coil.

5 more elements

A plasma display device comprising:

first electrodes;
a driving circuit unit for driving the first electrodes;
and
a power supply for generating a power source voltage for driving the driving circuit unit,
wherein the power supply includes:
a first converter for converting an input voltage and generating a plurality of voltages;
and
a second converter for converting at least one voltage among the plurality of voltages and generating at least one generated voltage having a level different from levels of the plurality of voltages.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/941,824Filed 16 Nov 2007
Priority: KR 10-2007-000565918 Jan 2007
Published: 24 Jul 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G09G 3/296
Using AC panels: driving circuits for producing the waveforms applied to the driving electrodes
H02M 3/33515
With automatic control of the output voltage or current, e.g. flyback converters: with digital control
G09G 3/293
Controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes: for address discharge
G09G 2330/028
Details of power systems and of start or stop of display operation: generation of voltages supplied to electrode drivers in a matrix display other…