Phosphors for plasma display

Abstract

Plasma display panels (PDPs) can be defined as flat-panel information-display devices in which the pixels consist of small gas-discharge cells that radiate visible light directly or emit luminescence produced by phosphors. In the latter case, the phosphors are excited by ultraviolet light produced by the gas discharge controlled individually in each cell. Devices are usually classified into three classes based on the fundamental operation mechanisms and the structure: (1) the DC type having electrodes in direct contact with discharge gas as in a conventional fluorescent lamp; (2) the AC type in which the electrodes and discharge gas are isolated from each other by a dielectric layer deposited on the electrode; (3) a hybrid type that combines the structures of the AC and DC types.