Flexible Displays and Electronic Paper

摘要

M. Ito et al. review in their article advantages and disadvantages of various transparent conducting oxides that are used as channel conducting materials in thin film transistors (TFTs). Among the possible material combinations such as zinc oxide and amorphous hydrogenated silicon, they chose an amorphous combination of Indium, Gallium, and Zink Oxide (a-IGZO) for application in microencapsulated elec-trophoretic displays. With its good optical and electrical characteristics, a-IGZO makes new device structures with electrophoretic frontplanes and amorphous-oxide TFT-backplanes feasible. Since deposition can be done rnsufficiently well by sputtering at low process temperatures on flexible substrates it is a strong candidate for the development of displays with electronic paper features.