An Apple patent published Tuesday reveals the company has for years been actively investigating a hinged iPhone format, with designs calling for a flexible metal-backed OLED display capable of being folded in half.
As granted by the U.S. Patent and Trademark Office, Apple's U.S. Patent No. 9,504,170 for "Flexible display devices" describes an iPhone with a foldable full-screen display. Like clamshell cellphones popularized by Motorola in the 1990s, Apple's proposed design also folds in two when not in use
for easy storage.
To achieve a foldable format, Apple's invention relies on a number of flexible components, the most important being an OLED display and metal support structure. For the latter, the document proposes nitinol, a nickel and titanium alloy known for its elasticity and unique shape memory
abilities. Alternative embodiments involve flexible polymers.
In some examples, the foldable phone incorporates a chassis or device housing split into upper and lower sections, each containing processors, sensors and other typical smartphone circuitry. For