From: Robert Dewar (dewar_at_SCHONBERG.CS.NYU.EDU)
Date: Tue Jan 25 1994 - 08:41:18 EST
Responding to Brian's note about turning off colors: please look at the
screen closely, it has red, green, and blue pixels. You can only turn on
or turn off these individual pixels. You get a monochrome illusion by making
sure that all three colors are equal intensity, if you do that all over the
screen, you will get shades of gray, but you won't save any power.
It is the technology, not the color, of a TFT screen that consumes power. A
monochrome TFT screen with the same number of pixels would consume roughly
the same amount of power. Of course you probably would NOT use the same
number of pixels, but could get away with one instead of three at each point,
so that is how a monochrome screen might use less power (even a TFT one).
You could imagine a feature to save power by turning on, say, only the blue
pixels, but I am not sure you would like the result.
I suppose that you could build a screen with four pixels at each point,
RBG and monochrome, and then perhaps you could have meaningful switching
between color and a lower powered monochrome.
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