MobileRead Forums - View Single Post - Why do eink displays need both black & white particles?

brecklundin · 05-08-2009, 10:57 PM

not quite since from my understanding the white & black particles are in the same cell and controlled via charge. As described here:

http://www.eink.com/technology/howitworks.html

My question is, why not simply place the layer of cells with just black particles over a background layer of pure white. Then as the particles are directed around the cell, the pure white would show through.

Of course I am pretty sure, after thinking about it, it would never be possible to have a cell show only white since every cell has black with nowhere to go when the need is for just white.

EDIT: Oh, geeze, that is what you wrote...sorry about that, I was trying to read, eat & type all in the dark and all at the same time while watching Outer Limits on Hulu...hehehehe...YES, you are right...thanks!!!

05-08-2009, 10:57 PM	#3
brecklundin Banned Posts: 1,906 Karma: 15348 Join Date: Jun 2007 Device: mine	not quite since from my understanding the white & black particles are in the same cell and controlled via charge. As described here: http://www.eink.com/technology/howitworks.html My question is, why not simply place the layer of cells with just black particles over a background layer of pure white. Then as the particles are directed around the cell, the pure white would show through. Of course I am pretty sure, after thinking about it, it would never be possible to have a cell show only white since every cell has black with nowhere to go when the need is for just white. EDIT: Oh, geeze, that is what you wrote...sorry about that, I was trying to read, eat & type all in the dark and all at the same time while watching Outer Limits on Hulu...hehehehe...YES, you are right...thanks!!! Last edited by brecklundin; 05-08-2009 at 10:59 PM.