All they can talk about in the article (sadly) are the applications to public-space advertising, but this looks very interesting.

-- Features an image memory function that enables continuous display of the same image even when electricity is turned off therefore no electricity is required for continuous display.
-- Screen image can be changed using minimal electricity consumption equivalent to the weak radiowaves used in contactless IC cards.
-- Fujitsu's new technology significantly conserves energy by consuming only one one-hundredth to one ten-thousandth the energy of conventional display technologies...

-- The new electronic paper is constructed of three displaying layers - red, blue, and green. Since no color filters or polarizing layers are required, it features color that is significantly more vivid than conventional reflective-type LCDs.
-- Proprietary Fujitsu technology ensures that screen color is unaffected even when the screen is bent or pressed with fingers.
-- Because the screen image does not require repetitive updates to be maintained, the screen does not flicker.

So...it uses little electricity, retains images, doesn't flicker, doesn't "shadow" or "flow" when pressed, has more vivid colors than other LCDs, is thin and flexible and lightweight. What's not to like?

I imagine this would be quite useful in laptops, where the power consumption by the screen could be further reduced, extending battery life. One could even envision a different form-factor for the personal computer, namely a roll-up touch-screen based on this technology which interfaces wirelessly with an integrated PC-cellphone-PDA device.