Foldable Display Shock-Absorbing Layer Design

The patent applies beforehand cushioning by introducing a shock-absorbing layer positioned between the window layer and the external environment. This layer is specifically designed to absorb and dissipate external impacts before they can reach the window layer, thereby protecting it from damage during folding and unfolding operations. The shock-absorbing layer acts as a preemptive protective measure that cushioning the window layer against potential harms.

The patent employs an intermediary approach by inserting a shock-absorbing layer as a mediator between the window layer and external impact forces. This intermediate layer serves as a buffer zone that decouples the window layer from direct exposure to external impacts, allowing the display device to maintain folding capability while protecting the vulnerable window layer through this intermediary protective element.

The patent applies the nested doll principle by arranging the stack structures in a nested configuration where the first stack structure containing the window layer is positioned within or adjacent to the second stack structure. This nesting arrangement allows the components to be compactly organized, minimizing the overall footprint and reducing dead space while still enabling the window layer to project outwardly for bending accommodation.

The patent utilizes dimensionality change by optimizing the spatial arrangement of the stack structures in multiple dimensions. Rather than allowing the window layer to project significantly in one direction (which would increase dead space), the structure is configured to distribute the necessary projection across different dimensions, achieving the required bendability with minimal increase in overall device area.