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Originally Posted by Anchoku
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Entirely reflective displays have the same contrast no matter what light level is used. It's just easier for the eye to read if you have enough light. The contrast of black ink on a white sheet of paper is the same in the dark as it is with a light on. So... make sure you have a light on.
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hmm... ok, I can buy the theory that regardless of the number of photons around, the ratio between reflected and absorbed will remain the same between the opaque ink and the white background. And sure, with more light, the eye will interpret the received photons better, because there will be a lot of white reflections coming in to tickle the old rods and cones. My old rods and cones seem to really covet photons these days!
But... I think in practice, the situation is more complex in the case of the LCD technology underpinning the french display. If the liquid crystal is not as opaque as the ink particles, there might be partial absorption of the photons by the liquid crystal, but some would get through and be reflected back by the background. In bright light, sufficient background photons might be reflected so that the absorbed photons are not as distinguishable by the eye. In other words, washout of the liquid crystal.
Am I making it up? Is this a valid concern, or just an overactive imagination?
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Originally Posted by Anchoku
About the bistable nematic display, it should be pretty good over a wide angle. White "luminance" will depend on how good the white diffuse reflector is behind the LCD and how much light gets eaten by the various layers between. Black luminance (you want as little as possible) depends on how well the LC absorbs the light and how little reflection there is between the LC and your eye.
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I can understand this too. But is it "as good as" e-ink? E-ink gives a very good illusion of ink on paper with regard to viewing angle. I have never found any LCD, including every reflection only LCD I've ever viewed, that comes close to that illusion. Even the video doesn't seem quite "right".
Perhaps I'm picky, but I think it would be good to understand the difference.
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Originally Posted by Anchoku
For that matter, where would the rest of the computer go? Check this old news.
 Artist's conception. |
I think the rest of the computer would go in that little knob at the top of the roller! :-)
-chuck