Qualcomm's Bright Low-Power Screen

Qualcomm has developed a screen for digital devices that uses ambient light to make images visible, instead of the backlighting built into most laptops and Apple's iPad. That means the Mirasol, as the screen is called, eats up very little battery power and is usable even in full sunshine. Unlike the screen in Amazon's Kindle, which also relies on ambient light, the Mirasol features full color and...