Plasma display apparatus and driving method thereof
AssigneeLG Electronics Inc.
InventorSeonghak Moon
Life of this patent
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Abstract
The present invention relates to a plasma display apparatus and driving method thereof. In an embodiment of the present invention, a scan bias voltage that is controlled according to a mapped sub-field, a data load or an APL of each sub-field is supplied. In an embodiment of the present invention, a scan bias voltage is changed depending on a sub-field, an APL or a data load. Therefore, address margin can be improved, a stabilized operation can be provided, and an erroneous discharge and/or miswriting can be prevented.
Claims14
A plasma display apparatus, comprising:
- a timing controller that calculates a gray level from an input video signal;
- a sub-field detector that performs a sub-field mapping on the gray level calculated by the timing controller and outputs a voltage-controlled signal depending on the mapped sub-field;
- a voltage converter that receives the voltage-controlled signal from the sub-field detector and controls a scan bias voltage depending on variation in the mapped sub-field;
- an electrode driver that supplies the scan bias voltage, which is outputted from the voltage converter according to timing control of the timing controller in an address period;
- and
- a plasma display panel comprising a scan electrode to which the scan bias voltage output from the voltage changer is applied.
A driving method of a plasma display apparatus comprising scan electrodes, comprising the steps of:
- calculating a gray level from an input video signal;
- performing a sub-field mapping on the calculated gray level and outputting a voltage-controlled signal depending on the mapped sub-field;
- controlling a scan bias voltage depending on a change of the mapped sub-field according to the voltage-controlled signal;
- and
- supplying the controlled scan bias voltage to the scan electrodes.
Dependencies are inferred from the claim text.