Light emitting diode, or LED, lights are the next phase in the evolution of artificial lighting. The process started with camp fires; the next step was candles. The big leap came in 1879 when Thomas Edison invented the electric light bulb. Since 1879 a vast number of improvements have been made to develop better lighting.
LED lights were invented in December 1st 1962 by Nick Holonyak. Jr. He worked for General Electric company. Holonyak is seen as the "father of the light-emitting diode". Then in 1972 a former graduate student of Holonyak , MR M. George Craford , invented the first yellow LED and improved the brightness of red and red-orange LEDs by a factor of ten.