Analysis of the "Almost Transparent" Cause of the Huge Display of Shanghai World Expo

The opening ceremony of the Shanghai World Expo was held in Shanghai on the evening of April 30, 2010. A total of 20,000 rounds of fireworks, the LED display with a total discharge of more than 280m shines. However, when viewing the display during the day, the background can be viewed through the display.

The reason is that the "pixel" spacing of the LED display is very large, about 12cm. When viewed close to it, it can be seen that a simple configuration in which the LED light-emitting elements are arranged according to the skeleton of the building scaffolding is used. This is why the screen size is so large that only 249,480 illuminating components are used. The wonderful opening ceremony that reflects China's strength is actually done by low-cost technology. (Editor: Cheng Xiang)

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