Samsung MD40B, MD46B Prevention of Afterimage Burn-in

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Appendix
Appendix
Prevention of Afterimage Burn-in
What is afterimage burn-in?
Afterimage burn-in should not occur when the LCD panel is operating normally. Normal operation refers
to a continuously changing video pattern. If the LCD panel displays a fixed pattern for an extended period
of time (more than 12 hours), a slight voltage difference may occur between the electrodes in pixels that
control the liquid crystals.
Such a voltage difference between electrodes increases with time and makes the liquid crystals thinner.
When this occurs, a previous image can remain on the screen when the pattern changes. To prevent this,
the accumulated voltage difference should be reduced.
Black Matrix
Source Drain
Data Bus-Line
{m{
Gate Pixel Electrode (ITO) Storage
Capaccitor (Cs)
Color-Filter
Common
Electrode (ITO)