LED panel displays: manufacturing uncertainties and global color performance

Abstract

The use of Light Emitting Diodes (LED) offers a multitude of advantages over conventional illuminating displays in various fields (traffic, publicity, screens for public events and so on). Each pixel of these displays is normally formed by a collection of different color LED's. These "clusters" of LED are used to correctly reproduce colors. In this paper we developed a color performance characterization method. The input is the light emitting spectrums of LED's and their uncertainties derived through the control of manufacturing processes.