Method and device for compensating burn-in effects on display panels

摘要

Phosphor based display technologies show artefacts like "sticking" or "ghost" images produced by "marking" or "burn-in" effects. In order to remove these artefacts it is proposed to activate a portion of the display screen (10) as a wiper and to move the wiper at least one time over the complete display screen (10) or a part of the display screen (10). The wiper will homogenize the complete video screen in order to make the ghost images less visible. Another embodiment is dedicated to the reduction of the short-term burning effect. Here, a dynamic correction of the displayed picture is done. A memorized picture could be subtracted from the current picture in order to reduce the visibility of the short term sticking effect.