Samsung PM49F Optimum picture quality and afterimage burn-inprevention, Optimum picture quality, Prevention of afterimage burn-in, What is afterimage burn-in

Chapter 7. Appendix

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 (1 ppm) may be brighter or darker on the panel. This does not affect product performance.

‒‒ The number of sub-pixels by panel type: 6,220,800

•Run Auto Adjustment to improve the picture quality. If noise is still found even after auto adjustment, adjust Coarse or Fine.

•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 occurwhen 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.

Afterimage burn-in should not occurwhen an LCD panel is operating in proper conditions.

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Black Matrix	Common	Colour-Filter
	Electrode
	(ITO)

Source Drain

	Gate	Pixel	Storage
			Capaccitor (Cs)
TFT		Electrode
Data Bus-Line
		(ITO)