Mitsubishi Electric Corp exhibited a semispherical display consisting of many OLED devices at CEATEC Japan 2011, which runs from Oct 4 to 8, 2011, in Chiba Prefecture, Japan.
In June 2011, Mitsubishi Electric sold a semispherical OLED display called "Geo-Cosmos" to Japan's National Museum of Emerging Science and Innovation (Miraikan). It seems that the company applied a similar technology to the latest prototype.
"We will apply the display for digital signage if there is a demand for it," the company said.
The semispherical display uses 696 OLED elements, and each of the elements measures 32 x 32mm. The pixel pitch of each OLED element is 3mm. Because it is driven by the passive-matrix method, driver elements like TFTs cannot be used. The red, green and blue sub-pixels that comprise a pixel are arrayed like stripes.
The brightness of the display is 1,200cd/m2. Its power consumption is 11.2kW on average and 22.3kW at the maximum. Its diameter is 2,700mm, and the thickness of its convex part is 680mm. Mitsubishi Electric said it is also possible to make displays that have concave-convex shapes other than the semispherical shape.