Apparatus and method of driving plasma display panel
AssigneeLG Electronics Inc.
InventorSang-Jin Yoon
Life of this patent
Estimating the term…
Abstract
An apparatus and method of driving a plasma display panel for preventing a brightness spot miss-fire and a miss-writing as well as reducing a manufacturing cost are disclosed. In the apparatus, a set-up supplier supplies a rising ramp waveform to scan electrodes in an initialization period, and supplies a positive enhancing pulse to the scan electrodes during an enhancing period following said initialization period. A negative voltage supplier supplies a falling ramp waveform to the scan electrodes in the initialization period, and supplies a negative enhancing pulse to the scan electrodes during the enhancing period.
Claims11
A plasma display device comprising:
- a plasma display panel (PDP) having scan electrodes and sustain electrodes to form a plurality of electrode pairs;
- and
- a first driving circuit configured to successively apply a first signal and a second signal to the scan electrodes before an address period of at least one sub-field,
- wherein the first signal comprises an initialing pulse rising to a first maximum voltage value and a first decreasing pulse falling to a first minimum voltage value,
- the second signal comprises an enhancing pulse rising to a second maximum voltage value that is less than the first maximum voltage value and a second decreasing pulse falling to a second minimum voltage value that is greater than the first minimum voltage value, and
- the second maximum voltage value is equal to a sustain voltage applied to the scan electrodes or applied to the sustain electrodes in a sustain period of the at least one sub-field.
A method of driving a plasma display panel based on a plurality of sub-fields, the plasma display panel having a plurality of discharge cells, and each of the cells having a scan electrode and a sustain electrode, the method comprising:
- providing a first signal including an initialing pulse followed by a first decreasing pulse to the scan electrode during an initialization period of at least one sub-field;
- providing successively a second signal including an enhancing pulse followed by a second decreasing pulse to the scan electrode after providing the first signal, wherein a lowest voltage of the first decreasing pulse is less than a lowest voltage of the second decreasing pulse;
- providing a scan signal to the scan electrode during an address period of the at least one sub-field, the scan signal being provided after the second signal in the at least one sub-field;
- providing at least one sustain signal to at least one of the scan electrode or the sustain electrode during a sustain period of the at least one sub-field,
- wherein the initialing pulse of the first signal has a first peak voltage value, and the enhancing pulse of the second signal has a second peak voltage value, and wherein the first peak voltage value is greater than the second peak voltage value, and wherein the second peak voltage value is equal to a voltage value of the sustain signal.
Dependencies are inferred from the claim text.