Comments on: Finally, electronic paper big enough to use

The prototype screen measures 10.1 inches across and less than 300 microns thick, making it about as thin and flexible as construction paper.

[Peet42]

A 10:1 contrast ratio?

Most commercial LCD screens have a contrast ratio of 500:1 or better. A 10:1 contrast ratio is, frankly, unreadable. :(

[Roman12]

unreadable?

Yes, the contrast ratio seems kind of low. It seems to me that at this point it's only good for folding into electronic paper airplanes.:)
__________________________________
R.K.
http://www.Remove-All-Spyware.com/

[Peet42]

Who is wtortorici ?

I posted under my own name earlier, and the system credited it to wtortorici... :-/

[Peet42]

Who the * is wtortorici ?

My name is Peet McKimmie. Every time I post it's credited to wtortorici. I'm not happy.

[TV James]

No it doesn't

Your correct name shows up. I've seen you make this complaint before in comments and it's always shown your correct name.

To us, anyhow.

Sounds like a weird bug to report directly to CNET.

[chuchucuhi]

10:1

If I remember correctly these first displays were to be "black and white" displays to show text hence usage of ebooks and the like. I believe the contrast is the maximum black to white and due to managing power consumption on how eink works this should be more than enough. For a highly technical explanation this might help.

http://graphics.tomshardware.com/display/20040226/contrast_ratio-01.html

[Flexi-DisPlay]

contrast ratio - not that simple

That article

http://graphics.tomshardware.com/display/20040226/contrast_ratio-01.html

has a good explanation, but it is a bit more complicated, since you would need to take into account the reflection from the ambient light.
So the 500:1 contrast ratio is for indoors, but in sunlight, this value decreases rapidly (try reading an LCD in bright sunlight).

As for the Librie, the 10:1 contrast ratio is sufficient, since it is a technology based on reflectance of the ambient light (like a newspaper - there the contrast ratio is similar to the librie), so you won't be able to read it in the dark (unless you use a torch or there is a light incorporated), but in sunlight you can read it very well (like the newspaper).

[Flexi-DisPlay]

contrast ratio - not that simple

That article

http://graphics.tomshardware.com/display/20040226/contrast_ratio-01.html

has a good explanation, but it is a bit more complicated, since you would need to take into account the reflection from the ambient light.
So the 500:1 contrast ratio is for indoors, but in sunlight, this value decreases rapidly (try reading an LCD in bright sunlight).

As for the Librie, the 10:1 contrast ratio is sufficient, since it is a technology based on reflectance of the ambient light (like a newspaper - there the contrast ratio is similar to the librie), so you won't be able to read it in the dark (unless you use a torch or there is a light incorporated), but in sunlight you can read it very well (like the newspaper).