Microsoft Patents Novel Hinge Design, Hinting at Foldable Phone Comeback

Microsoft is reportedly exploring a return to the foldable device market after the discontinuation of its Surface Duo line. A recent patent application suggests the tech giant is developing a novel hinge mechanism aimed at improving the durability and aesthetics of foldable smartphones.

The patent, filed on February 29th with the United States Patent and Trademark Office, details a "spine cover plate" designed to protect the device's single hinge system. This technology could potentially position Microsoft to compete with devices like the Samsung Galaxy Z Fold.

A Galaxy Z Fold Competitor?

The application describes a device featuring a flexible display in a book-style design, similar to the Galaxy Z Fold. The core innovation lies in the spine cover plate mechanism, which aims to safeguard the single-hinge system by encasing the structural element.

The key differentiator between conventional hinges and Microsoft's design is the automatic adjustment of the spine cover during opening and closing. This aims to eliminate gaps around the hinge, thus protecting it from dust and water. Currently, Samsung's foldable design offers an IPX8 rating, which only provides water resistance.

According to the patent, this new hinge mechanism could also allow Microsoft to minimize the hinge crease, making it less visible than current solutions on the market.

Furthermore, Microsoft outlines methods to reduce the overall thickness of the foldable smartphone. By enabling the spine cover plate to move closer to the device's hinge when folded, the device would be more ergonomic.

"By retracting the spine cover plate toward the central spine as the first display-supporting frame and the second display-supporting frame are rotated into a face-to-face orientation, the width of the folded computing device is reduced, thereby enabling easier and more comfortable handling of the device, such as with one hand," the patent states.

Practicality in Question

The smartphone industry is actively seeking ways to eliminate the crease inherent in foldable displays. While some manufacturers have implemented water-drop folding mechanisms to mitigate the issue, a truly crease-free foldable remains elusive. The durability of these devices, given their numerous moving parts, is also a significant consideration.

Adding another layer, especially a movable one, to the already complex foldable mechanism raises questions about practicality, despite the potential benefits and enhanced durability outlined in Microsoft's patent application.