Will the next Kindle have a color display? Gamma Dynamics has announced a new electrofluidic reflective display (devloped at the Novel Devices Laboratory at the University of Cincinnati) that uses colored pigments.
Voltage is used to electromechanically pull the pigment out of the reservoir and spread it as a film directly behind the viewing substrate. As a result, the display takes on color and brightness similar to that of conventional pigments printed on paper. When voltage is removed liquid surface tension causes the pigment dispersion to rapidly recoil into the reservoir.The lennas above compare electrofluidic and electrophoretic displays used in ebooks.