Samsung PN51E6500EFXZA - Manual (Page 208)

the minimum screen brightness.
N
If the Eco Sensor is set to On , the
display brightness may change
(become slightly darker or brighter)
depending on the light intensity
in your room. You can control the
screen’s minimum brightness with
the Min. Backlight / Min Cell Light
function.
●
No Signal Power Off
To avoid unnecessary energy