Information from: Organic Light-Emitting Diodes (OLEDs) Tutorial [The old "ray-gun" approach of computer monitors:] Cathode Ray Tubes (CRTs) shoot electrons toward a phosphorescent screen. The electron beam leaves a bright spot wherever it strikes the phosphor screen. [The newer flat screens and laptop screens:] Liquid Crystal Displays (LCDs) block or pass light reflected from an [...]




