[em10fan]

eInk would be a poor choice, the flash caused by updating the screen, every time you type a character, would be extremely fatiguing.

This refresh would be very very slow on a decent size screen which would lead to a very noticable typing lag.

I imagine it would also cause rapid wear of the screen, too.

In the few cases of EInk screens being used for signage, they avoid having things like clocks on there, for that reason, and they structure the display so its actually built of many different panels, which can be refreshed individually.

[ilmucio]

Thanks your for your feedback, I I can see that such device would not replace a normal screen ... but still I think even the writing experience of ereader is ok for me to alternated after a few hour working on a emitting light monitor. I see it as a complementary device not a substitute.