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it home reported on september 20 that according to the latest list published by the united states trademark and patent office (uspto), apple has obtained a new patent that envisions the design of a future folding iphone.touch-sensitive controls on all surfaces, including solid-state buttons.

this patent is titled "electronic device with display and touch sensor structure". users can easily control the iphone by touching, sliding or other methods. the patent design sketch shows a foldable design.

"collecting touch input from a user and efficiently displaying images to the user can be challenging," apple said. "for example, when a user provides touch input to a touchscreen display, the user's hand may obscure an image being displayed on the display."

therefore, apple envisions touch-sensitive controls on all surfaces of the device, with built-in control circuits, batteries and other components. the surface can include opaque and transparent parts, and the materials include opaque plastics, metals, fiber composites, and multi-layer structures containing fibers, ceramics and other opaque materials.

apple lays tiny metal wires (like nanostructures, which may not be visible to the naked eye) on the surface of the device to achieve touch-sensitive control on any surface.

apple also provides some examples in the patent to illustrate what practical uses this touch functionality would have.

one of the uses described in the patent attached by it home is as follows: in game applications and other applications, users can use the touch sensor on the back to collect touch input while displaying relevant visual information on the front display of the device.