Sharp's latest 3-D displays deliver bright, clear imagery without the cumbersome glasses usually required for such technology—but they only work on a 3-inch screen held a foot from the viewer's face, reports the Associated Press. Sharp on April 2 demonstrated liquid crystal screens for mobile devices that showed 3-D animation, touch-panel screens that switched from one 3-D photo to another, and a display connected to a 3-D video camera. Movies and TVs in 3-D are no longer surprising. Sony Corp. and Panasonic Corp. of Japan, as well as South Korea's Samsung Electronics Co. and LG Electronics, already sell or are...

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