The talk was mostly focused on the technology and fabrication process, but most of the questions involved applications and social implications. Can you make solar cells? (Yes.) What about digital ink pens? (Yes.) What are the environmental impacts? (E-ink is made of titanium dioxide and carbon, which is what paper is made of anyway. The printed chips were first made of cadmium selenide, and now are made of pure silicon.) When can I buy something with this in it? (Soon a bunch of things will be coming out. In Tokyo, you can buy Dynavision ebooks now; they'll be in the US the beginning of next year.) How long does it take to make a stamp for mass-production? (Stamps are made with conventional lithography, which takes about 8 hours for a typical stamp.) What is the defect rate? (It's high, but you include lots of redundancy.) Have you thought about windshields and other clear displays? (Yes - transparency is part of the chemistry. The power consumption and failure states need to be worked out, though.)
I can imagine many applications for this, some positive (cheap, bendable computer displays and even computers, for one), some negative (pervasive animated advertisements, increased power consumption, etc.). What do you think?