P‐14.21: Optimization of Support Layer in Foldable OLED Module

With the advancement of flexible OLED display technology, foldable display modules have emerged as a crucial solution for achieving both portability and large screen display. Foldable display modules are composed of multiple heterogeneous material layers bonded by optical clear adhesive (OCA). However, due to significant differences in the mechanical properties of each layer, issues such as interlayer peeling and film fracture are prone to occur during the bending process. This study proposes an optimized design approach for the metal support layer structure. By adjusting the modulus distribution of the support layer to mitigate stress concentrations in bending regions and enhance the bending reliability of the module. Finite element analysis (FEA) was employed to simulate the bending process of the module, with particular attention to characterizing the crease defects. The results demonstrate that the optimized support layer effectively reduces stress peaks and mitigates crease formation, providing valuable insights and references for the reliability design of foldable OLED modules.