P-Ink: The next generation of E-Ink
In the last year or two, Electronic Ink, or E-Ink, has hit the shelves in consumer products such as Sony’s e-reader and other thin, monochrome displays. It works by having polarized particles which effectively rotate whenever an electric charge is applied, either revealing their dark, or their light side. The benefits of this technology include great contrast, and EXTREMELY long battery life (power is only needed to change the picture, and no backlight is needed).
Up until now, the technology has been limited to monochromatic applications only, but this new development is the first to offer an electronic ink- like material that provides the full range of colors. The principle of operation is the same as that of E-ink, except that it uses “nematic liquid crystals, which can be twisted to form any color in the visible spectrum.”
http://www.ecogeek.org/content/view/967/
