See this:
Comparing the Pixel Qi screen to others
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sergey samokhov permalink
I wonder if the diagram means that Pixel Qi is slightly worse than what they use in modern eBook readers.
And BTW, will Pixel Qi support sub-pixel anti-aliasing in reflective mode? Not that I cannot live without it, but still it would be nice.
answer: we have higher power consumption than electrophoretic technology, but the vast majority of power consumption in a screen comes from it’s backlight, with it off, the power savings are dramatic. Backlight can be turned off in room lighting and outside (the screen is sunlight readable). Of course anti-aliasing and sub-pixel rendering are supported. We are slightly dimmer than electrophoretic in dim room light, but in these cases the backlight can be turned on to the lowest setting (very low power) and the effect – the screen appears similar to electrophoretics – with the majority of light reflecting off the screen. In a totally dark room, the pixel qi screen can be seen and read using the backlight feature, unlike electrophoretics.
Interesting. Hopefully it will come with an ambient light sensor so the backlight dimming can be an automatic feature. I use my iPad mostly in normal room light, so any power savings would be welcome.
Link to Engadget....Jan 2010 article:
Notion Ink Adam stripped bare and our in-depth video hands-on
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You have to have a pretty special product to get two Engadget posts discussing your wares during the maelstrom of CES, but this Adam thing just won't leave us alone with its Pixel Qi display, Tegra 2 innards and bona fide potential to blow the bloody doors off the homogeneous tablet market. We've gone back and grabbed video of the device in direct sunlight and it just kept on impressing us. The screen resolutely refused to be overpowered by the light, whether its backlight was on or off, but that was merely the tip of the iceberg as far as the happy impressions. Come past the break to find out more about buttery smooth 1080p playback (with a handy HDMI out), Notion Ink's plans for modifying the Android OS, and more on the likely pricing of the device which is set to land in quarter two of 2010. Oh, and yea -- we totally ripped it open and photographed the insides. Check that out below.