No abstract

A new active matrix electronic paper display (EPD) prototype targeting medium format document viewing applications has been developed using electrophoretic technology manufactured by E Ink Corporation. The prototype panel represents an unprecedented step upward in absolute resolution and total viewable area over commercially available products, while also introducing a novel controller architecture for image stable displays.

An improved full color active matrix electronic paper display (EPD) prototype using a custom design color filter array with E Ink's electrophoretic technology is reported. Improvements over previous efforts are achieved by using a) improved ink formulations with higher dynamic range, b) 4 bit gray scale for each color and c) a color filter design with RGBW pixel layout to improve brightness and dynamic range. As a result, the whiteness of the background page is preserved while enabling color. In addition, due to the "paper-like" optics, the brightness and saturation of the optical states are largely independent of viewing angle or illumination conditions.