Mitsubishi Electric LDT651L User manual

IMAGE PERSISTENCE: LCD MONITORS

When an LCD panel is continuously displaying the same image (graphic)
for a long period of time, a trace of the image can remain visible due to
an electric charge near an electrode causing a difference in potential
between the electrodes controlling the alignment of the liquid crystals.
This misalignment of liquid crystals will cause a residual or ghost-like
images resulting in image persistence.
Image persistence is not a product defect, and all LCD products are subject
to image persistence. Mitsubishi encourages correct usage of LCD Monitors.
The series of Mitsubishi MDT LCD Monitors include features to help reduce
the impurities that can result in image persistence.
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IMAGE PERSISTENCE: LCD MONITORS
HOW DOES IMAGE PERSISTENCE OCCUR?
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Common electrode (ITO)
Liquid Crystal
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Electric charged ion
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Pixel electrode (ITO)
Alignment Layer (PI)
Backlight
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Backlight
Common electrode (ITO)
Liquid Crystal
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Electric charged ion
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Alignment Layer (PI)
Pixel electrode (ITO)
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NO IMAGE PERSISTENCE
IMAGE PERSISTENCE
Image persistence can possibly lead to image sticking, where the
previous image is permanently visible as a result of an image fixed
for a long period of time.

IMAGE PERSISTENCE: LCD MONITORS
WHAT CAN I DO TO REDUCE IMAGE PERSISTENCE AND HELP
ENSURE THE LIFE OF THE MDT LCD DISPLAY MONITOR?
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IMAGE ROTATION SUPPORT:
Image rotation prevents an image being in a stationary state. The displayed
image is slightly expanded and moves periodically (up, down, left, right,
movement options of approximately ±10mm from original position at
user set intervals).

SCREEN SAVER SUPPORT:
The screen saver support is one of the best options to protect the LCD
Monitor from image persistence. The MDT LCD Monitors includes multiple
screen saver options:
IMAGE PERSISTENCE: LCD MONITORS
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GAMMA: The Gamma "On" function provides a nonlinear tonal correction
editing an images gamma curve, used to manipulate image shadow
detail and lighten the image without washing out the highlight areas.
This function allows for a more uniformed brightness and contrast
measurements which will reduce image persistence.
•Gamma = ON
No affect to the screen performance
by using optimized Gamma
Standard = OFF
COOLING FAN: The built in cooling fan is helpful in reducing the overall LCD
temperature, which is beneficial in the overall life of the LCD Monitor. The
MDT cooling fan is automatically triggered when the LCD Monitor reaches
a temperature threshold, so the monitor will always run cool.
MDT LCD MONITOR
WITH COOLING FAN
OTHER LCD MONITOR
WITHOUT COOLING FAN
BRIGHTNESS: General rule if you run the LCD Monitor in high bright mode, you will
run a higher risk of image persistence - recommend running in low bright mode.
MOTION: motion settings helps reduce the likely hood of image persistence, since
it prevents an image from being stagnantly displayed for long periods of time.

TURN OFF THE LCD MONITOR WHEN NOT IN USE:
Turning off the LCD Monitor helps reset the LCD Panel and its liquid
crystals. The MDT LCD Monitors offer various methods of turning off
the LCD Monitor when the displays are not in use:
IMAGE PERSISTENCE: LCD MONITORS
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POWER SAVE: The Power Save feature detects when an input signal is no
longer active and will automate the LCD Monitor in a Power Save state to
save the life of the LCD panel.
SCHEDULER FEATURE: The built in Scheduler can be programmed to auto-
mate power on and power off of the LCD Monitor. It also supports the sig-
nals of input sources to help prolong the life of the LCD Monitor.
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IMAGE PERSISTENCE: LCD MONITORS
ADDITIONAL TIPS
•Allow adequate ventilation around the LCD Monitor so heat can
properly dissipate
Power off the LCD Monitor for the same length of time the LCD
Monitor has been powered on
Don’t block ventilation openings or place the LCD Monitor near
a radiator or other heating sources
Fixed images should not be displayed for long periods of time
(prefer to change video pattern frequently)
Encourage to change images for short image cycles (versus long cycles)
Side border color function to reduce risk of image sticking for long
periods of usage
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