Today, numerous manufacturers have announced TVs with screens that exceed 100 inches, but this was no less than 40 years ago. According to the announcement, "At 1.5 meters high, 2 meters wide, 25 centimeters deep and with a 100-inch screen, this is the world's largest television receiver. This flat-screen color TV uses a new method unlike anything the world has ever seen. The screen comprises 78,000 color light elements in 260 vertical columns and 300 horizontal lines. An 'electronic brain' manipulates the broadcast signal received by the antenna, switching the screen's individual color light elements on and off to realize color broadcast." In other words, it was a light emitting display that realized video images using something similar to 78,000 miniature light bulbs.
Today it's easy to laugh at the fact that it used the equivalent of miniature bulbs, but this was in the heyday of the cathode ray tube (CRT), and Sony was poised to launch the Trinitron. Yet in spite of this, Sony took what had to be a very bold step in launching a TV that did not use CRTs.
In fact, it used 700 integrated circuits and cost ¥10 million. That's why it was never commercialized, but the "Jumbotron" exhibited at the International Exposition, Tsukuba, Japan, 1985 (TSUKUBA EXPO '85) was a gigantic 2,000-inch screen that inherited the big-screen concept and gave people a taste of even greater surprise and excitement.