Wysips proposes a means to eliminate chargers of any kind-- by turning device screens into solar chargers.
Its technology involves layering a superthin (less than 100 microns thick) transparent photovolotaic film on top of a device's display, with the film producing power from nearby light sources (be it the sun or electric lamps).
It would take 6 hours of direct sunlight to fully charge a typical mobile's battery (more if using indoor lighting). The phone automatically charges up whenever it's exposed to light.
The company says its film won't affect touch screens or glasses-free 3D screens. Wysips already has a working prototype at CTIA 2011, with the final product (for launch in a year's time) to be integrated directly into a device's LCD.
Wysips has ambitions to integrate its technology not only into phones, but also eBooks and tablets, together with digital signage and technical textile applications