A recently published patent suggests Microsoft might be revisiting its foldable device ambitions. The patent details a novel hinge design, a critical component for foldable devices, sparking speculation about the potential return of the Surface Duo. This new hinge deviates significantly from the norm and could address some key challenges in foldable technology.
Rethinking the Fold: A Novel Hinge Design
Most foldable smartphones utilize a “water drop” hinge, allowing the flexible screen to form a teardrop shape when folded, minimizing creases and enhancing durability. Microsoft’s patent, however, showcases a different approach. It appears to employ a system of interconnected “sub-assemblies” that slide and flex to enable screen movement. This mechanism contrasts sharply with the dual-screen setup of the Surface Duo and Surface Duo 2, which relied on a central hinge connecting two separate displays. Instead, this new design seems geared towards a single, flexible screen, similar to the Samsung Galaxy Z Fold 6 or OnePlus Open.
A Microsoft patent drawing showing a type of hinge design.
Furthermore, the patent illustrations depict the hinge within a compact, clamshell-style foldable device, reminiscent of the Samsung Galaxy Z Flip 6 or Motorola Razr 2024. This form factor differs significantly from the previous Surface Duo iterations.
Beyond Smartphones: Potential Applications
While the prospect of a new Surface Duo is exciting, Microsoft’s ambitions for this hinge may extend beyond smartphones. The patent explicitly mentions “folding smart phone devices” but also refers to “computing devices that include first and second device portions that are coupled at a hinge assembly.” This broader language suggests potential applications in laptops, a market where Microsoft’s Surface line has thrived.
The patent also highlights the reliability challenges faced by foldable smartphones and consumer preference for thinner devices. Microsoft claims its hinge design addresses both concerns. While the patent’s wording acknowledges the hinge’s suitability for laptops, the emphasis remains on smaller devices, perhaps strategically covering all potential use cases.
A History of Hinge Innovation
This isn’t Microsoft’s first foray into hinge technology. In 2019, the company patented a hinge filled with liquid or gas to enhance durability. In 2022 and 2023, Microsoft explored designs allowing a single screen to fold both inwards and outwards. The Surface Duo 2, released in 2022, reached the end of its software support in late 2024.
Conclusion: A Glimpse into the Future?
While patents don’t always translate into actual products, this new hinge design offers a glimpse into Microsoft’s ongoing exploration of foldable technology. Whether it signals the return of the Surface Duo or hints at innovations in other Surface devices, it’s clear Microsoft remains invested in the future of foldable displays. Only time will tell if this innovative hinge design will materialize into a tangible product.
