Home Facts industry

Shanghai Expo:Opto Tech Builds Spherical LED Screen

Shanghai Expo:Opto Tech Builds Spherical LED Screen

Write: Porter [2011-05-20]

One of the most distinctive features of Taiwan's pavilion at the Expo 2010 Shanghai China is a spherical screen made with one million LEDs.

Shanghai Expo:Opto Tech Builds Spherical LED Screen


The diameter and weight of the screen are 16m and 130t, respectively. And Taiwan's natural environment and cultures are displayed on it.


Taiwan built a pavilion for a world exposition for the first time in 40 years since Expo '70 in Osaka Prefecture, Japan The Expo 2010 Shanghai China runs from May 1 to Oct 31, 2010.

Shanghai Expo:Opto Tech Builds Spherical LED Screen


Opto Tech Corp, which is a business partner of Nichia Corp, designed and manufactured the LED screen. Opto Tech made rod-like LED modules by using Nichia's so-called 3-in-1 LEDs.


The dimensions of the modules are 19 x 23 x 720-1,200mm. In the case of a module equipped with 40 LEDs 20 pixels its power supply voltage, power consumption and illuminance are 7.5V, 11.4W and 5.8cd/m2, respectively.


Opto Tech also made a tool to combine the rod-like LED modules into the spherical shape as well as a server to control the video output for the screen. The tool has a function to easily correct the position of reinforcing steel used as a base to which LED modules are attached, the company said.