Patent ID: 8125411
Filing Date: 2012-02-28
Classification: G09G

Abstract:
1. A plasma display apparatus, comprising: a plasma display panel comprising a first electrode and a second electrode, the plasma display panel being configured to measure a first time interval during which a substantially same image is displayed by the plasma display panel for a plurality of frames; and a driver configured to apply two or more sustain signals to the second electrode in a period during which two consecutive sustain signals are applied to the first electrode in a sustain period included in a frame disposed subsequently to the plurality of frames when the first time interval exceeds a critical time interval, and apply a single sustain signal to the second electrode in a period during which the two consecutive sustain signals to the first electrode in the sustain period included in the frame disposed subsequently to the plurality of frames when the first time interval does not exceed the critical time interval, wherein a waveform of each sustain signal applied to the first electrode in the sustain period is substantially identical to a waveform of each sustain signal applied to the second electrode in the sustain period, wherein a number of the sustain signals applied to the first electrode in the sustain period is less than a number of the sustain signals applied to the second electrode in the sustain period when the first time interval exceeds the critical time interval, wherein the number of the sustain signals applied to the first electrode and the number of the sustain signals applied to the second electrode, in the sustain period, are equal to each other when the first time interval does not exceed the critical time interval, and wherein the critical time interval comprises a first critical time interval, a second critical time interval, and a third critical time interval, and the first critical time interval ranges from 30 seconds to 4 minutes, the second critical time interval ranges from 4 minutes to 8 minutes, and the third critical time interval ranges from 8 minutes to 10 minutes.