Mitsubishi Electric LDT651L Manual de usuario

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.

•

IMAGE PERSISTENCE: LCD MONITORS

HOW DOES IMAGE PERSISTENCE OCCUR?

•

Common electrode (ITO)

Liquid Crystal

•

Electric charged ion

•

Pixel electrode (ITO)

Alignment Layer (PI)

Backlight

•

Backlight

Common electrode (ITO)

Liquid Crystal

•

Electric charged ion

•

Alignment Layer (PI)

Pixel electrode (ITO)

•

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?

•

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

•

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

•

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.

•

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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