Image Persistence - NEC MultiSync UN552 User Manual

Image Persistence

Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence occurs
when a residual or "ghost" image of a previous image remains visible on the screen. Unlike CRT monitors, LCD panel monitors'
image persistence is not permanent, but constant images being displayed for a long period of time should be avoided.
To alleviate image persistence, turn off the monitor's main power or set it to standby for as long as the previous image was
displayed. For example, if an image was on the monitor for one hour and a residual image remains, the monitor's main power
should be turned off or set it to standby for one hour to erase the image.
As with all personal display devices, NEC DISPLAY SOLUTIONS recommends displaying moving images and using a moving
screen saver at regular intervals whenever the screen is idle, or turn off the monitor's main power or set it to standby when not in
use.
Please set [SCREEN SAVER], [DATE &TIME] and [SCHEDULE SETTINGS] functions to further reduce the risk of Image
persistence.
For long life use as a Public Display
Image Sticking of LCD Panel
When an LCD panel is operated continuously for long hours, a trace of electric charge remains near the electrode inside the
LCD and a residual or "ghost" image of the previous image may be observed. (Image Persistence)
Image Persistence is not permanent, but when a fixed image is displayed for long period, ionic impurities inside the LCD are
accumulated along the displayed image and may be permanent. (Image Sticking)
Recommendations
To prevent Image Sticking, and for longer life usage of the monitor, the following is recommended.
• Fixed image should not be reproduced for long period. Change still images after short intervals.
• When not in use, please turn off the monitor via remote control, or use the Power Management function of the PC, or use the
built-in Schedule Functions.
• Lower environmental temperatures prolong the lifespan of the monitor.
When a protective surface (glass, acrylic) is installed over the monitor's screen surface, the monitor's screen surface is
located in an enclosure, utilize the temperature sensors inside the monitor.
To reduce the internal temperature, use the Cooling Fans, Screen Saver, the Power Management function of the PC and
Low Brightness.
• Please use "Screen Saver Mode" of monitor.
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