A: LED display’s development, history, application, usage Knowledge
1.1923: LED were invented
2.1965: first commercial LED were launched
red, green, yellow LED lamps were launched later successive one by one
3.1990: Blue LED was invented by Nichia Company Japan.
4.1993: Blue LED lamps were launched into the market by Nichia company Japan.
5.1993: the full color LED display were launched into the market
6.1998: white LED lamps were invented.
B: Application of the LED display:
1. Commercial Advertising & Media: the main model for the full color LED display ...Continue Reading →