Samsung UN46ES6100GXZE - Manual (Page 199)

Light
for PDP TV
: When the Eco Sensor
is set to On , you can manually adjust
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.