25.1: Tri‐Fold Flexible AMOLED with High Barrier Passivation Layers

Abstract A folding screen type OLED display was developed (Fig. 1) to demonstrate the application of a flexible display. The display surface can be bent with a curvature radius of 4 mm To protect an OLED against moisture, inorganic passivation layers are provided on the upper and lower sides of the flexible display. Using our transfer technology, dense passivation layers can be obtained The measured water vapor transmission rate of the layer is 7 × 10 −6 g/m 2 .day or less, which improves OLED reliability.