Innovative solution for e-Ink screen lighting

[Dylrob]

Originally Posted by Rob Lister

I have a much simpler solution to the back-lit ebook conundrum. Simply add a thin layer of radium to the underside of the screen. This would accommodate reading in pitch dark.

That would not work. EInk is opaque. Light won't travel through it like an LCD.

[tomsem]

Originally Posted by Dylrob

That would not work. EInk is opaque. Light won't travel through it like an LCD.

Add it to the eInk screen itself, then. To whatever layer you see when there's no black. As long as it didn't affect the 'normal' daylight viewing.

I imagine the idea is infeasible for any number of other reasons, though.

[Dylrob]

Originally Posted by tomsem

Add it to the eInk screen itself, then. To whatever layer you see when there's no black.

It doesn't work like that. eInk displays use tiny capsules filled with black and white "ink" particles:



To display white, the white particles are pulled up to the top while the black particles are pulled to the bottom. To display black, the black particles are pulled up to the top while the white particles are pulled to the bottom. Shades of gray are produced my mixing the black and white particles.

The point is that you see the same "layer" regardless.

[tomsem]

Originally Posted by Dylrob

It doesn't work like that. eInk displays use tiny capsules filled with black and white "ink" particles:



To display white, the white particles are pulled up to the top while the black particles are pulled to the bottom. To display black, the black particles are pulled up to the top while the white particles are pulled to the bottom. Shades of gray are produced my mixing the black and white particles.

The point is that you see the same "layer" regardless.

OK, dope the white capsules with radium then.