Sliding resistance of layered ultra-thin glass module for flexible cover window: Effect of mechanical properties and artificial neural network modeling

Recently, various flexible products such as curved, sliding, foldable, and stretchable devices have been introduced to the electronics market using flexible materials. For these products to be commercialized, the cover window module that protects the internal display from external impacts must be capable of specific deformation actions repeatedly without causing deformation or damage during operation. Additionally, structural analysis techniques are required to accelerate design processes. In this study, a finite element model for the sliding motion of the layered cover window module was developed and validated by comparing with experimental results. Based on the suggested model, the parameter study for the mechanical properties of each layer was conducted and physically explained. The relationships between mechanical properties and sliding force were identified and predicted by stepwise regression and artificial neural network methods.