Curved Cover Window Structure for Buckle-Free Display Lamination

The patent applies local quality by creating a tapered area specifically at the rear surface corresponding to the curved surface parts, while maintaining a planar structure elsewhere. This localized modification allows the curved surface to be achieved without applying excessive pressure to the corner display parts, as the tapered region distributes the contact pressure over a larger area. The light blocking layer is also positioned to correspond with this tapered area, creating a coordinated local solution that prevents buckling while preserving the curved aesthetic.

The patent resolves the bonding issue by introducing a dimensional change at the rear surface of the cover window. Instead of a flat rear surface, a tapered area is created, which adds a third dimension (depth variation) to the structure. This dimensional modification allows the curved surface to be maintained for aesthetic purposes while the tapered region distributes bonding pressure more evenly across the contact area, preventing concentration of stress on the corner display parts and ensuring uniform bonding quality.

The patent applies parameter changes by modifying the thickness parameter of the cover window at specific locations. The tapered area creates a gradual thickness variation from the front curved surface to the rear attachment area. This parameter change (thickness gradient) allows the structure to be simpler overall while still increasing the effective attachment surface area. The light blocking layer is positioned to correspond with this tapered region, creating a coordinated solution that prevents buckling without requiring complex multi-component structures.