Plasma display device and driving method thereof
OwnerSang-Chul Kiminventor
Life of this patent
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Abstract
In driving a plasma display device, a driving time is accumulatively calculated, and the number of subfields to which a main reset waveform for initializing every discharge cell is supplied in a first frame in which the accumulative driving time is longer than a reference time is larger than the number of subfields to which the main reset waveform is supplied in a second frame in which the accumulative driving time is shorter than the reference time. By increasing the number of subfields to which the main reset waveform is supplied in a single frame with an increase in the accumulative driving time of the plasma display device, a discharge delay can be reduced by using priming particles formed by a main reset.
Claims12
A method of driving a plasma display device which is driven upon dividing a single frame into multiple subfields each having a weight value, the method comprising:
- accumulatively calculating a driving time of the plasma display device;
- comparing the calculated accumulative driving time with a pre-set first reference time;
- and
- setting the number of subfields, to which a main reset waveform for initializing every discharge cell is supplied in a first frame in which the accumulative driving time is longer than the first reference time, to be larger than the number of subfields to which the main reset waveform is supplied in a second frame in which the accumulative driving time is shorter than the first reference time.
A plasma display device driven upon dividing a single frame into multiple sub-fields, the device comprising:
- a Plasma Display Panel (PDP) including a plurality of first and second electrodes and a plurality of discharge cells defined by the plurality of first and second electrodes;
- a driver to supply to the plurality of discharge cells in the plurality of subfields, either a main reset waveform to initialize the plurality of discharge cells or to supply an auxiliary reset waveform to initialize discharge cells that have displayed an image in an immediately previous subfield;
- and
- a controller to accumulatively calculate a driving time of the PDP, and to set the number of subfields, to which the main reset waveform is supplied in the first frame in which the calculated accumulative driving time is longer than a set first reference time, to be larger than the number of subfields to which the main reset waveform is supplied in the second frame in which the accumulative driving time is shorter than the first reference time.
Dependencies are inferred from the claim text.