Thread: eInk and lighting on the Samsung Alias 2
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Old 05-12-2009, 04:39 PM   #29
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Device: Galaxy S, Nook w/CM7
Quote:
Originally Posted by DaleDe View Post
so, as I understand it you are saying that the bistable e-INK is quad stable with the w/b ink being up/down or the w/b ink being sideways (rotated 90 degree) in the cell allowing the light to shine through. Thus only the white areas would light up with the black areas blocking the light. How would you do gray?

Dale
A pixel is covered by an electro plane where 1/2 - (white) and 1/2 + (black). To get gray with backlighting apply a + voltage on the top and a - on the side. The mixture of light and black will give you gray.
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