Microsoft plans to take on iPhone and Android smartphones with this new device

Microsoft discontinues Surface Duo smartphones but files a patent for a new foldable device with a single hinge system called 'spine cover plate'. The design aims to eliminate the hinge crease and reduce the device's thickness while offering added benefits and durability. However, its practicality remains uncertain.

The patent application, filed with the United States Patent and Trademark Office on February 29, details a foldable smartphone concept featuring a unique single-hinge system dubbed the "spine cover plate." This design aims to address key challenges in the foldable market, including hinge durability and the visibility of the crease on the display.

Galaxy Z Fold Inspiration?

The application suggests a book-style design similar to the Samsung Galaxy Z Fold, featuring a flexible display. The primary focus, however, is on the spine cover plate mechanism. This mechanism is designed to protect the single hinge system by covering the structural element, offering enhanced durability.

The key innovation lies in the spine cover's ability to adjust automatically during opening and closing. This prevents unnecessary gaps around the hinge, offering protection against dust and water ingress. While Samsung's current foldable design boasts an IPX8 rating (water resistance), Microsoft's approach could potentially offer a higher level of protection.

Tackling the Crease

The patent also suggests that the new hinge mechanism could significantly reduce the visibility of the crease, a common issue with current foldable devices. Furthermore, Microsoft is exploring techniques to minimize the overall thickness of the foldable smartphone. The spine cover plate can retract towards the central spine when the device is folded, leading to a slimmer profile and improved handling.

Microsoft's patent states, "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."

Practicality in Question

The pursuit of a crease-free foldable phone is a major focus in the smartphone industry. While some manufacturers have implemented water-drop folding mechanisms to mitigate the crease, a truly seamless foldable display remains elusive. Durability is also paramount, given the multiple moving parts in foldable devices.

The addition of another movable part on top of the existing foldable mechanism raises questions about practicality and long-term reliability. Despite the potential benefits and enhanced durability outlined in the patent, the complexity of the design may present challenges.