I'm not convinced there is a large demand for these. While LCDs work poorly in bright sunlight, e-ink works poorly in darkness. Humans are more likely using a display in a poorly lit area than a brightly lit one.
In addition, e-ink uses less energy only if the image isn't really changing. If the image is refreshing, there is a bunch of energy being blown to overwrite the old image. That's not power friendly.
Finally, I seem to remember that there were a bunch of patents in the way.
In addition, e-ink uses less energy only if the image isn't really changing. If the image is refreshing, there is a bunch of energy being blown to overwrite the old image. That's not power friendly.
Finally, I seem to remember that there were a bunch of patents in the way.