Shenzhen Sunhope Photoelectricity Co.,Ltd.

Light-emitting diode (LED) is a semiconductor display device which developed in the sixties.Seventies, with the semiconductor material synthesis technology, monocrystalline manufacturing technology and PN junction formation technology research, LED has great improve in color, brightness and other properties. After entering the eighties, LED has greatly improved in emission wavelength range and performance, it began to form flat panel display products which is LED display.
Three stages of LED display development:
1. Before 1990, the growth of LED display formation period. On the one hand, limited by the LED device materials, LED display is not widely used. On the other hand, the display control technology is basically a communication control method that will impact display effect. During this period, LED display used widely in foreign countries and products with red and green dual color based. Control method for communication control, gray level is 4 level single point tone gray, and the cost is high.
2. 1990-1995, this phase is a period of rapid development of LED display. Into the nineties, the global information industry growth quickly and continue to make breakthroughs in various fields of information technology, LED display in control and materials technology have been emergence of new results. Successful development of blue LED chip,full-color LED display to enter the market. With the development of computer and microelectronics technology, there have video control technology in display control field. LED screen dynamic effect of greatly increased.
3. Since 1995, LED display industry had been into a period of steady improvement of the overall industrial structure adjustment and improvement. After 1995, LED display industry competition intensifies, it form many small and medium enterprises,product prices fell, application fields are wider. The products in quality and standardization have a series of new problems.