• The Associated Press

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Sharp’s latest 3-D displays deliver bright, clear imagery without the cumbersome glasses usually required for such technology. Now the bad news: They only work on a 7.5-cm screen held 30 cm from the viewer’s face.

Sharp Corp. demonstrated liquid crystal screens last week 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., as well as South Korea’s Samsung Electronics Co. and LG Electronics, already sell or are planning 3-D TVs.

The drawback until now has been the need for special glasses, which show different images to the right eye and the left eye.

Sharp’s 3-D technology doesn’t require them because the displays are designed to shoot different images to each eye. The technology may be applied to TVs in the future, said Yoshisuke Hasegawa, executive manager.

But he acknowledged it now works better when the distance between the viewer and the screen is fixed.

The smaller displays, shown Friday, are intended for mobile devices such as cell phones, game machines and digital cameras.

The 3-D animation on the hand-held screen looked like a miniature version of the 3-D animation on larger TV screens, though images were less convincing than those seen in a darkened cinema.

Photos on the touch screen were less clear and even a bit blurry from certain angles, though Sharp said its latest technology does away with such “ghosting” effects.

Still, the system promises gaming and technology fans the potential for pop-up e-mail messages and taking 3-D photos of friends.

The technology is likely to show up in the next DSi portable game machine, which Nintendo Co. says will be 3-D. Sharp refused to confirm the names of firms it is supplying.

Sharp expects 3-D to replace two-dimensional displays the same way color replaced black-and-white in movies and TV.

“The arrival of mobile 3-D is just around the corner,” Hasegawa said.

Sharp tried to sell 3-D products in the past but failed, largely because of poor image quality. This time, the Osaka-based company has made breakthroughs for displays that are twice as bright and clear as existing 3-D displays.

The displays can continue to show 3-D images when they are turned to the side, a key feature for smart phones, according to Sharp. Mass production of the 3-D LCDs is set to start in the first half of fiscal 2010.

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