Microsoft Patents Novel Foldable Phone Hinge Design, Eyes Potential Return to Smartphone Market

Microsoft is reportedly exploring a new direction for foldable devices after the discontinuation of its Surface Duo smartphone line. A recent patent application suggests the tech giant is developing a novel hinge mechanism aimed at improving the durability and aesthetics of foldable phones.

"Spine Cover Plate" Design Emerges

The patent application, filed on February 29 with the United States Patent and Trademark Office, details a "spine cover plate" concept. This technology focuses on a single-hinge system designed to protect the device's structural integrity.

Mimicking the Galaxy Z Fold?

The application suggests a book-style design, reminiscent of the Samsung Galaxy Z Fold. The core innovation lies in the spine cover plate, which aims to safeguard the single-hinge system.

The key difference between conventional hinges and Microsoft's design is the spine cover's automatic adjustment during opening and closing. This aims to eliminate gaps around the hinge, offering superior protection against dust and water ingress. Currently, Samsung's foldables offer an IPX8 rating, providing water resistance only.

Addressing the Crease Issue

The patent suggests that the new hinge mechanism could minimize the visibility of the hinge crease, a common issue in foldable devices.

Furthermore, Microsoft outlines methods to potentially reduce the overall thickness of the foldable smartphone. This involves allowing the spine cover plate to move closer to the device's hinge when folded.

Microsoft explains in the patent that retracting the spine cover plate towards the central spine reduces the width of the folded computing device, enabling easier and more comfortable handling.

Practicality in Question

The smartphone market is actively seeking solutions to eliminate the crease 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 foldable devices is a crucial consideration due to their moving parts. The practicality of adding another movable component to the foldable mechanism remains to be seen, despite the potential benefits described in Microsoft's patent application.