Foldable Touch AMOLED Integrated with Plastic Window and Optical Film

Flexible and rollable OLED display provides various electronic applications such as curved, rollable, and commertial displayes because of thin, light, and design freedom[1-3]. In this study, the technical issues to fabricate a large flexible and rollable OLED display will be discussed as shown in Fig. 1. First, the requirements of transparent plastic substrate will be studied in terms of material properties to apply oxide TFT process. Second, it will be introduced to optimize oxide TFT characteristics on polyimide plastic substrate considering process compatibility. Further more, the panel stack structure will be discussed in order to apply a rollable display with a stress distribution study in a cross sectional panel structure. Finally, a flexible module process will be discussed with some challenging issues.