Method of driving a plasma display panel
AssigneeLG Electronics Inc.
InventorJung Hun Kim
Life of this patent
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Abstract
A plasma display panel (PDP), and a method of driving plasma display panel, achieve improved contrast by minimizing quantity of luminescence in a non-luminescent display period, that is, a reset period. A method of driving a PDP having a plurality of discharge cells with a plurality of scanning electrodes, a plurality of sustain electrodes, and a plurality of address electrodes involves forming a frame having a plurality of sub-fields; causing a reset discharge in only first sub-fields of the respective plurality of discharge cells; deciding ON/OFF state of discharge cells in current sub-field in accordance with ON/OFF state of discharge cells in previous sub-field; and converting the discharge cell into any one of ON/OFF wall electric charges in accordance with the ON/OFF state of the decided discharge cell.
Claims15
A method of driving a plasma display panel comprising a plurality of discharge cells including a plurality of scanning electrodes, a plurality of sustain electrodes, and a plurality of address electrodes, comprising:
- a step of forming a frame having a plurality of sub-fields;
- a step of applying a reset pulse to scanning electrode in only first sub-fields, to form wall electric charge in the discharge cells using a lamp waveform to increase voltage in Set-up of the reset pulse, and to partially eliminate unnecessary charged particles using a lamp waveform to decrease voltage in Set-down of the reset pulse while applying a positive DC voltage to the sustain electrode.
A method of driving a plasma display panel where one frame screen is realized by making a selective combination X numbers of sub-fields SF1, SF2, SF3, . . . , SFX, sustain period of each of which is allowed at the rate of 20:21:22:23:
- . . . :2X-1 so as to display multi contrast image on PDP, in the unit of cell for a certain period, wherein only one reset discharge in only first sub-field SF1 of a respective plurality of discharge cells is caused to occur and the discharge cell in current sub-field is converted into any one wall electric charge of ON/OFF in accordance with ON/OFF state of the discharge cell in previous sub-field.
Dependencies are inferred from the claim text.