Optimum Picture Quality And Afterimage Burn-In Prevention - Samsung QB43R Service Manual

2-5-2. Optimum Picture Quality and Afterimage Burn-in Prevention

„ Optimum Picture Quality
• Due to the nature of the manufacturing of this product, approximately 1 pixel per million (1ppm) may be brighter or darker on
the panel.
This does not affect product performance.
- The number of sub-pixels by panel type: 24,883,200
• Leaving the screen fixed on a stationary image for an extended
period of time may cause afterimage burn-in or defective pixels.
- Activate power-saving mode or a dynamic screen saver if
you will not be using the product for an extended period of
time.
„ 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 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.
• Afterimage burn-in should not occur when an LCD panel is operating in proper conditions.
Black Matrix
Common
Electrode (ITO)
SourceDrain
Gate
TFT
Data Bus-Line
Product specifications
Color-Filter
Storage
Pixel Electrode (ITO)
Capaccitor (Cs)
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