Samsung LT-P468W Owner's Instructions Manual page 3

If the borders at the left, right and the
center of the screen remain fixed for
Caution
an extended period of time, the
amount of light transmission will also
remain varied and as a result the
borders may leave traces.
If the borders at the left, right and the
center of the screen remain fixed for
Caution
an extended period of time, the
amounts of light transmission will
also remain varied and as a result
the borders may leave traces.