Preventing Screen Burn-In On Lcd/Tft Displays; How Can This Be Avoided - B&R 4PP065.0571-B00 Technical Documentation Manual

5.4 Preventing screen burn-in on LCD/TFT displays

Screen burn-in (afterimages, display memory effect, image retention or image sticking) occurs on LCD/TFT displays
if a static image is displayed for a prolonged period of time. This static screen content causes the build-up of
parasitic capacitances within the LCD components that prevent liquid crystal molecules from returning to their
original state. This condition is unpredictable and can depend on the following factors:
• Type of image displayed
• Color composition of the image
• Length of time that the image is displayed
• Ambient temperature

5.4.1 How can this be avoided?

There is no perfect solution. There are ways to significantly reduce this effect, however:
• Avoid static images or screen content.
• Use non-static screensavers when the display is not in use.
• Change images frequently.
• Turn off the display when not in use.
Turning off the backlight does not help prevent screen burn-in.
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