L1 and L2 are determined by ambient (room) bright when user adjust.
[Example 1]
Brightness setting at the dark condition adjusted by procedure 3
BRIGHTNESS range
Brightness setting at the bright condition adjusted by procedure 2
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[Example 2]
Brightness setting at the dark condition adjusted by procedure 3
BRIGHTNESS range
Brightness setting at the bright condition adjusted by procedure 2
If Brightness setting value becomes less than the Brightness setting vale at the dark condition while user sets the Brightness at the bright condition, Brightness setting becomes as following figure.
BRIGHTNESS range
when X reach to Y
BRIGHTNESS range
when user down the Brightness further
BRIGHTNESS range
when user up the Brightness again
