The United States Patent and Trademark Office (USPTO) has adopted an apple application for "built in soft input and output components of the electronic device" patent, the patent describes the technology can be applied to modern LCD or OLED panel. The patent describes a flexible input / output display with a built-in sensor and a force feedback system. Traditional flexible display, such as Samsung smart phone OLED, rely on plastic.
In order to enhance the flexible substrate, apple presented place the necessary lighting components (such as LED, micro LED and OLED), the input structure and conductive traces forming a grid interconnection path shape. These paths can be straight, serpentine or fluctuating so as to better promote the tensile. These paths can be straight, serpentine or fluctuating so as to better promote the tensile.
More importantly, the method needs to reduce or completely remove the underlying polymer layer, leaving the "electronic unit" or "island mechanism" of the network structure. This design is well suited for the treatment of bending or tensile deformation on one or more dimensions without cracking or breaking.
In addition to folding, Apple patent display can also be built into a lot of sensors and electronic components, such as touch sensors, force sensors, light sensors, etc.. These sensors are equipped with iPhone, iPad and Apple Watch standard, which means that this new type of stretchable display may occur in future devices.
There are rumors that Apple will use flexible OLED display on this year's iPhone 8, but only on the edge of the screen surface effect. The patent in the stretchable display functionality and usability will be better, but I do not know when it will appear in apple products.