The Electrofluidic Display (EFD) technology can display images without a backlight, the main source of power drainage in mobile computing. Instead of lighting pixels, it uses an “ink” that is trapped between two layers of plastic. When electricity passes through a pixel, it forces the ink to move to the display’s surface to become visible. EFD is significant advantages over black and white E-Ink, the technology currently used in eBooks: the image quality is better and the refresh rate is faster. It is fast enough to reply video.
However, while drawing less current than an LCD screen, EFD might consume significantly more than E-ink because E-Ink needs power only when the image changes, while EFD seems to consume power to maintain the image.
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