Saving energy-Weirdest Idea 3
We use display/Monitor for TWO activities:
There can be a display option : Dim inactive portion of monitor while we type on keyboard.
When we type letters-emails-compose word-ppt text boxes,we only look at the screen exactly where we are typing.The illumination in other part of the screen is just a wastage !.
Once we are done with typing , a slight movement of pointer/MOUSE to the inactive area could be used to lit the whole screen bright again.