Thread: eInk and lighting on the Samsung Alias 2
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Old 05-12-2009, 01:07 PM   #27
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Device: Galaxy S, Nook w/CM7
Quote:
Originally Posted by DixieGal View Post
Harry, let me ask you a question that I've wondered about for a while now. Does the screen necessarily have to be opaque? Can't the plastic be made semi-transparent? Then a light under it would be perfect, sort of glowing through to light it up.
Right now the pixel in an eInk technology has two electro planes and two dies. The top electro plane is transparent the bottom is opaque.

One solution to enable backlighting to work is for the pixel would have to have 4 electro planes. Two on the top/bottom and one on each side. The top remains transparent. The bottom becomes a two way filter (opaque on the side of the die, transparent on the side if the back light source).

The eInk would operate as normal until backlighting is turned on. At this point instead of the the white die being brought to the top to simulate a white surface, the side electros are turned on to allow the back light to travel through the pixel to produce a white surface.


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