a-Si:H Thin-Film Transistor-Driven Flexible Color E-Paper Display on Flexible Substrates

A 14.3-in flexible color electronic-paper display with the highest resolution has been developed. This display uses an electrophoretic material between a-Si: H thin-film transistors (TFTs) on a metal foil and a color filter array (CFA) coated onto a plastic substrate, allowing it to recover its original shape after being bent and to produce color images. To make this new display possible, low-temperature processes (< 150 degrees C) for TFT and CFA on flexible substrates have been developed, resulting in the minimization of panel deformation and the prevention of circuit structure change. Here, we also develop a U-type dual TFT structure and a quad-type CFA pattern suitable for this reflective-type display.