Advances in field emission displays phosphors

Recent advances in the phosphors used for held emission displays (FEDs) are discussed. After reviewing the range of voltages and phosphors being used in first generation devices, the improved properties of future generation p hosphors are reviewed. Specifically, next generation displays will require better low voltage efficiencies, chromaticity, saturation behavior, and mai ntenance. Possible routes to achieve these improvements are discussed. The improved understanding of the role of charging and surface recombination ef fects on cathodoluminescent intensity-and efficiency is reviewed. An improv ed understanding of electron beam-stimulated surface chemical reaction effe cts on the degradation of phosphor is presented. It is concluded that recen t research efforts have created a new level of understanding of FED phospho rs, and this should lead to the necessary improvements in properties. (C) 1 999 American Vacuum Society. [S0734-211X(99)08102-0].