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Royal Philips N.V. and Sharp Corp developed a 85-inch 8k4k naked-eye 3D LCD display and exhibited it at FPD International 2013, which took place from Oct 23 to 25, 2013, in Yokohama, Japan.

Sharp developed the 8k4k display, and Philips' own lenticular lens was mounted on its surface so that 3D video can be viewed with the naked eye. While Philips is considering using the display for digital signage, etc, Sharp said that it has not yet decided anything in regard to commercialization.

The size and pixel count of the 8k4k display are 85 inches (1.9 x 1.05m) and 7,680 x 4,320, respectively. Its pixel pitch and brightness are about 0.25mm and 300cd/m2.

The number of colors that it can display is about one billion (10 bits for each of red, green and blue), which is larger than the number of colors that can be displayed on a full-HD display. The frame frequency of the new display is 60Hz.

This time, Philips mounted its own "fractional lenticular lens" on the display. There are several points (viewpoints) that are optimal for viewing 3D video displayed on a naked-eye 3D display using a conventional lenticular lens. When the eyes of the viewer are not positioned at any of those points, it is impossible to accurately view 3D video correctly.

Displays used for digital signage are usually viewed by passers-by. So, they see the displays while passing over optimal viewpoints. As a result, 3D video is interrupted.

The fractional lenticular lens enables passers-by to naturally view 3D video because Philips made improvements to the position and shape of the lens. Asked about the number of viewpoints, the company said, "Simply speaking, it offers 28 viewpoints, but the number multiplies several times, depending on how it is counted."