[AMD1] Foldable Technology of OLED Displays

[AMD1-1(Invited)] Development of Foldable AMOLED Displays Based on Neutral-Plane Splitting Concept

*Masumi Nishimura¹, Kisako Takebayashi¹, Masatomo Hishinuma¹, Hajime Yamaguchi¹, Akio Murayama¹ (1. Japan Display Inc. (Japan))

Keywords:Foldable display, Neutral-plane splitting, Bending stiffness, Adhesive, Organic light-emitting diode

Splitting of the mechanical neutral plane is a promising concept for foldable displays because it reduces the
folding stress and stiffness of the display. We verified the concept experimentally and developed 5.5-inch full high-
definition foldable AMOLED displays, which endured 150 k inward folding cycles with folding radius of 3 mm.