Optical performance of in-plane electrophoretic color e-paper

Several e-paper technologies are currently under development with the ultimate goal of replacing printed ink on paper. Here, optical performance measurements on monochrome in-plane electrophoretic e-paper devices with unsurpassed brightness, contrast, and viewing-angle performance are reported. The measurement results are captured in a straightforward optical model that allows extrapolation to full-color performance. It demonstrates that in-plane electrophoretic color e-paper technology has the unique potential to deliver on the high standards required by digital-signage applications.