A new kind of 3D display developed at HP Labs plays hologram-like videos without the need for any moving parts or glasses. Videos displayed on the HP system hover above the screen. Viewers can walk around the display and experience an image or video from as many 200 different viewpoints—like walking around a real object.

The screen is made by modifying a conventional liquid-crystal display (LCD), the same kind of display found in most phones, laptops, tablets, and televisions. Researchers hope these 3D systems will enable new kinds of user interfaces for portable electronics, gaming, and data visualization. The work, carried out at HP Labs in Palo Alto, California, relies on complex physics to make 3D displays that are as thin as half a millimeter.

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