Commissioning
Mobile Panel 40/50 User's manual V1.80
79
3.11 User tips for increasing the service life of the display
3.11.1 Backlight
The service life of the backlight is specified by its "half-brightness time". An operating time of 50,000 hours would
mean that the display brightness would still be 50% after this time.
3.11.1.1 How
can
the service life of backlights be extended?
•
Set the display brightness to the lowest value comfortable for the eyes.
•
Use dark images.
•
Reducing the brightness by 50%
can
increase the half-brightness time by approximately 50%.
3.11.2 Image persistence
Image persistence refers to the "burning in" of a static image on a display after being displayed for a long time. It
does not only occur with static images, however. Image persistence is also referred to in the technical literature as
screen burn-in, image retention, memory effect, memory sticking or ghost image.
There are 2 different types:
•
Area type: This type
can
be seen in a dark gray image. The effect disappears if the display is switched
off for a long time.
•
Line type: This
can
result in permanent damage.
3.11.2.1 What causes image persistence?
•
Static images
•
No screensaver
•
Sharp transitions in contrast (e.g. black/white)
•
High ambient temperatures
•
Operation outside of specifications
3.11.2.2 How
can
image persistence be reduced?
•
Switch
continuously between static and dynamic images.
•
Prevent excessive differences in brightness between foreground and background elements.
•
Use colors with similar brightness.
•
Use complementary colors for subsequent images.
•
Use screensavers.
3.12 Pixel
errors
Information:
Displays
can
contain faulty pixels (pixel
errors
) due to the manufacturing
process
. They are not
ground
s for initiating a complaint or warranty claim.
