Here's some interesting technical detail from the press release:
E-paper is being heralded as an environmentally friendly electronic display medium that is lightweight and thin like paper, consumes little power, and allows an image to be freely redrawn. While most e-paper applications to date - such as e-book readers - have been monochrome (black and white), Fujitsu Laboratories pioneered the development and practical use of color e-paper, and in 2007 Fujitsu Frontech Limited brought to market FLEPia, the world's first portable information terminal equipped with a color e-paper display.
With demand on the rise for e-paper in areas such as e-book readers and public advertisements, anticipation is mounting for e-paper technology that can display color.
Although extensive R&D in the industry has been conducted for e-paper, in the past as it had been difficult to simultaneously achieve various functionality, such as the ability to feature brightness in color, and simultaneously enhancing brightness and greater contrast ratios while achieving faster re-write speeds, there is anticipation for improvements in color e-paper featuring further enhanced display functionality.
Overview of Newly-developed TechnologyFigure 2: Cholestric LCD panel employed in Fujitsu's color e-paper structure
The new feature-enhanced color e-paper developed by Fujitsu Laboratories and to be commercialized by Fujitsu Frontech employs a layered construction found in cholesteric liquid-crystal display (LCD) panels with an image memory function, and makes use of the reflective properties in each color layer where the cholesteric liquid crystals reflect a specific wavelength of light of red, green, or blue (Figure 2). Compared to the reflective displays using a color-filter array widely used in conventional LCDs, Fujitsu's cholesteric LCD method allows for a display that features colors with greater vibrancy and brightness.
Fujitsu's new feature-enhanced color e-paper has achieved the world's highest color-image quality, in an extremely slim film panel. Key features of the new color e-paper are as follows: