Apple is reportedly set to revolutionize the foldable market in September 2026 with the launch of its first-ever folding handset, likely branded as the iPhone Ultra. New reports from industry analysts suggest that Apple’s “secret sauce” for achieving a perfectly smooth, invisible crease isn’t just the glass itself, but a breakthrough in material science.
Here are the key pointers on how Apple is using advanced technology to create a truly crease-free experience.
Advanced Optically Clear Adhesive (OCA): The iPhone Ultra will reportedly utilize a specially optimized OCA that features unique viscoelastic properties, allowing it to remain pliable during bending while providing structural support when the device is open.
Dynamic Stress Modulation: This high-tech adhesive enables the iPhone Ultra display to “soften” under the pressure of folding, significantly reducing the fatigue stress that typically causes permanent deformation and micro-cracks in other foldables.
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Micro-Flow Surface Smoothing: Unlike standard glues, the adhesive in the iPhone Ultra can flow into microscopic irregularities on the panel surface, filling in gaps and reducing light scattering to make the crease virtually invisible to the naked eye.
Variable Thickness Display Glass: Patents suggest the iPhone Ultra will pair this adhesive with ultra-thin glass (UTG) that is chemically thinned at the folding axis to improve flexibility while remaining thick and durable elsewhere.
Stabilized Neutral Layer: By using OCA to stabilize the display’s neutral layer, the iPhone Ultra prevents the internal components from falling out of alignment, which is the primary cause of visible creases over long-term use.
Synergistic Hardware Design: To complement the adhesive, the iPhone Ultra is expected to feature a 3D-printed titanium or liquid metal hinge, ensuring that the mechanical stress is distributed evenly across the 7.8-inch internal screen.
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