NEC LCD4020, LCD4620 user manual Image Sticking of LCD Panel, Recommendations, English-30

NOTE 2: IMAGE PERSISTENCE

Please be aware that LCD Technology may experience a phenomena known as Image Persistence. Image Persistence occurs when a residual or ÒghostÓ image of a previous image remains visible on the screen. Unlike CRT monitors, LCD monitorsÕ 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 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 should be turned off 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 turning off the monitor when not in use.

Please set ÒSCREEN SAVERÓ, ÒDATE &TIMEÓ and ÒSCHEDULE SETTINGSÓ functions to further reduce the risk of Image persistence.

For long life use of Public Display

<Image Sticking of LCD Panel >

When LCD panel is operated continuously for long hours, a trace of electric charge remains near the electrode inside LCD, and residual or ÒghostÓ image of previous image may be observed. (Image Persistence)

Image Persistence is not permanent, but when fixed image is displayed for long period, ionic impurities inside LCD are accumulated along the displayed image, and it is observed permanently. (Image Sticking)

<Recommendations >

For preventing the fast transition to Image Sticking, and for longer life usage of LCD, following are recommended.

1.Fixed image should not be displayed for long period, and changed to another images with short cycle.

2.When no use, please turn off the monitor by remote control, or use Power Management Function of monitor or use Schedule Function of monitor.

3.Reducing the environmental temperature is effective for long life use.

When Protection board (glass, acryl) is installed over the LCD surface, enclosed into the box / wall, or stack the monitor, please utilize the temperature sensors inside monitor.

To reduce the environmental temperature, the monitor should be set Low Brightness or Cooling Fan ÒONÓ by using Screen sever Function.

4.Please use ÒScreen Saver ModeÓ of monitor.

Remote Control ID Function

REMOTE CONTROL ID

The remote control included with the display can be used to control up to 26 individual MultiSync monitors using what is called the REMOTE CONTROL ID mode. The REMOTE CONTROL ID mode works in conjunction with the Monitor ID, allowing control of up to 26 individual MultiSync monitors. For example: if there are many monitors being used in the same area, a remote control in normal mode would send signals to every monitor at the same time Figure 1. Using the remote in REMOTE CONTROL ID mode will only operate one specific monitor within the group Figure 2.

TO SET REMOTE CONTROL ID

While holding down the REMOTE ID SET button on the remote control, use the KEYPAD to input the Monitor ID (1-26) of the display to be controlled via remote. The remote can then be used to operate the monitor having that specific Monitor ID number.

When 0 is selected or when the remote control is in normal mode, all monitors will be operated.

	Monitor ID:1	Monitor ID:2
Remote works		Remote works

Figure 1

Remote in

Normal mode or the REMOTE ID is set to 0

Monitor ID:3

Remote works

TO SET REMOTE CONTROL ID

ID Mode - To enter ID Mode press the REMOTE ID SET button and hold down for 2 seconds.

Normal Mode - To return to Normal Mode press the REMOTE ID RESET button and hold down for 2 seconds.

In order for this feature to work properly, the display must be assigned a Monitor ID number. The Monitor ID number can be assigned under the MULTI DISPLAY menu in the OSD (See page 27).

Press the ÒDISPLAYÓ button on the remote to bring up the Information OSD. The Information OSD shows the monitor ID number and other information such as signal type, zoom method, etc.

Monitor ID:1		Monitor ID:2
Remote does		Remote does
	not work		not work

Figure 2

Remote set up to

use REMOTE

ID:3

Monitor ID:3

Remote works

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