Second-generation e-paper can be rolled up, use almost no power and even display video.Plastic Logic makes backplanes for e-paper.Plastic Logic E-readers such as the Amazon Kindle and Sony Readers have brought e-paper to the masses. With bright screens, contrast and resolution that rivals that of ink on paper and a reflective display that can be read even in bright sunlight, the devices make reading much more comfortable than on a computer screen.But with small, rigid, black-and-white glass screens, these first-generation devices are just the starting point for a new industry. A swarm of companies, including big names such as Hitachi,...