Method of driving plasma display panel
AssigneeLG Electronics Inc.
InventorJeong Choi
Life of this patent
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Abstract
Disclosed is a method of driving a plasma display panel enabling to improve an overall contrast characteristic of the plasma display panel by reducing a voltage difference between scan and sustain electrodes Y and Z to decrease an emission amount of light generated by a discharge between the scan and sustain electrodes Y and Z. The present invention includes a first step of applying a reset pulse to the scan electrode to form predetermined wall charges on the electrodes for a set-up period and a second step of applying a pulse of a predetermined level to the sustain electrode to reduce a voltage difference between the scan and sustain electrodes while the reset pulse is applied.
Claims18
A method for driving a plasma display panel based on a frame having a plurality of sub-fields, the method comprising:
- applying a scan electrode waveform to a scan electrode during a reset period of at least one sub-field, the scan electrode waveform including a first ramp-up section wherein a first voltage level gradually increases, and a ramp-down section wherein a second voltage level gradually decreases;
- and
- applying a sustain electrode waveform to a sustain electrode during the reset period of the at least one sub-field, the sustain electrode waveform including a second ramp-up section wherein a third voltage level gradually increases during the first ramp-up section of the scan electrode waveform, and a first flat section wherein a fourth voltage level is maintained at a constant level during the ramp-down section of the scan electrode waveform.
A method for driving a plasma display panel based on a frame having a plurality of sub-fields, the method comprising:
- applying a scan electrode waveform to a scan electrode during a reset period of at least one sub-field, the scan electrode waveform including a first ramp-up section wherein a first voltage level gradually increases, a first flat section wherein a second voltage level is maintained at a constant level, and a ramp-down section wherein a third voltage level gradually decreases;
- and
- applying a sustain electrode waveform to a sustain electrode during the reset period of the at least one sub-field, the sustain electrode waveform including a second ramp-up section wherein a fourth voltage level gradually increases during the first flat section of the scan electrode waveform, and a second flat section wherein a fifth voltage level is maintained at a constant level during the ramp-down section of the scan electrode waveform.
Dependencies are inferred from the claim text.