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Solar panels are evolving every day - we know that. As long as people invent ways of being independent to the grid, it's ok, but after a while, they have to be efficient, too. So, for the moment, solar cells in cell phones are like electric cars: they're nice, the concept is beautifully presented, but figures say they're not efficient and practical.

Displays that use organic light-emitting diodes (OLEDs) are more vivid than liquid-crystal displays, have much faster refresh rates, and draw less power, but so far, manufacturing difficulties have limited them to small sizes fit only for handheld devices. On December 1, and only in Japan, Sony released the world's first OLED television, featuring an 11-inch panel with a layer of light-emitting organic material just several hundred nanometers thick. Initially, Sony plans to manufacture 2,000 of the TVs per month.