High Brightness Full Color LEDs

Abstract

A new Multi-Layer type full color LED, capable of mixing different luminous wavelengths to radiate many different colors of light (visible also from a short distance), at high levels of efficacy. Excellent luminous intensity, has been demonstrated by the prototype. Values of 35 cd white light have been achieved using multi-layered blue, red and green chips, at a current of 20 mA per chip.