Samsung LCD TV LE26R53BD Owner's Instructions Manual page 2

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