Throughout the development process, LED display and is closely related to the progress of modern science and technology, the first piece of LED display in nanjing railway station built in 1982, due to the LED material limit, only about 8 MCD luminescence brightness, with control and drive circuit is not enough mature, display effect is very poor, high failure rate. 

Since 1992, with the improvement of the performance of the electronic components, the development of large scale integrated circuit and computer technology, reliability, and constantly improve the brightness of LED devices, falling cost, especially the large increase of the financial securities industry market demand, the domestic LED display into rapid development phase, the multilevel gray LED video display screen, compared with the TV wall, display type projection screen, LED display, with its high brightness, contrast, can be all-weather operation advantages, has been widely used, has now become the financial, securities, dock, station, sports venues and other necessary propaganda media equipment. Especially indoor full color (that is, the interior tricolor screen) because of its panchromatic holographic, the advantages of small particles, vivid and become the development direction of a period of the LED screen, with the increasingly elaborate and slashed prices of this kind of light-emitting devices, indoor full color will be popular with the market, in order to make up for the inadequacy of color projection and other equipment.

In the early 80 s, with the development of the computer, the CGA display mode appeared, it has 320 * 200 resolution of 4 kinds of color, display in only 10 years has experienced CGA, EGA, SEGA, VGA, SVGA, to the development of ultra-high resolution, display precision from 320 to 1600 * 1250 * 200 development, from 4 kinds of color to the 32 bit image, scanning frequency from 15.7 K to 150 K. Display is the working principle of signal from the receiving host back into the light in the form of a displayed, along with the development of people need a big screen equipment, then had the projector, but its brightness can't be used in the natural light, so the LED monitor (screen), it has a large Angle, the characteristics of high brightness, colour is gorgeous. LED display has been widely used in sports venues, large screen display system can live games and the score of the match, time, highlight replays, etc.; In the transportation industry, can display the road running situation; In the financial industry, financial information can be, real-time display, such as stock, exchange rate, interest rate, etc.; In the business of posts and telecommunications systems, can show the customers notice, news, advertising and so on.

According to the survey, two-thirds of the information people receive information is through the eyes. Display technology is applied in industrial production, military, medical units, the public security system and even the aerospace industry and other fields of national economy, social life and military, and plays an important role in display technology has become a modern life an indispensable technology of human society.