Foldable Display Polarizer Bonding Layout to Prevent Waviness

The patent extracts the bonding layer from the bending region by defining its end position to be farther from the bending region than the polarization layer end. This separation removes the bonding layer from the area subject to bending stresses, preventing waviness and external visibility defects while maintaining structural integrity through the covering layer configuration.

The patent introduces a vertical dimension solution by configuring the covering layer with a first covering layer having a surface height equal to the polarization layer surface height, and a second covering layer outside the first. This multi-level covering structure compensates for the bonding layer termination and maintains surface integrity without requiring the bonding layer to extend into the bending region.

The patent segments the covering layer into a first covering layer and a second covering layer with distinct functions and positions. The first covering layer contacts the polarization layer side surface and has a surface height equal to the polarization layer, while the second covering layer is located outside the first. This segmentation allows each layer to perform its specific function efficiently, managing complexity through functional division.

The patent applies local quality by giving different characteristics to different parts of the covering structure. The first covering layer has a specific surface height matching the polarization layer and contacts the side surface, while the second covering layer is positioned outside. This localized differentiation optimizes each region's performance without requiring uniform complexity throughout the entire structure.