 Plasma backlight generates light using pulsed dielectric barrier discharge  Applied voltage excites xenon atoms in the gas chamber and enables the formation of excited Xe 2 * molecules  UV-radiation is transformed into visible light by phosphors Principle of the barrier discharge Source: OSRAM Plasma backlight module structure Source: OSRAM Xenon reaction diagram Source: POSTECH Plasma Backlight Unit Simulation

Applied Voltage

 Figures show the potential and related electric field in different phase of pulses.  While pulse voltage is beginning to apply, which induce the strong electric field at cathodes, charged densities would be increased by secondary electron.  At tip edges, where has the higher electric field, will try to collect ions during the switch of voltage. Electrical fieldPotential Potential & Electric Field

 The density distribution widens to roughly triangular shapes ending on the opposing electrode lines.  Simulated dominant UV radiation is 173nm, which is consistent with experimental observation. Xe 2 * ( 3 Σ u + )--173nm Xe 2 * (O u + )--150nmXe 2 * ( 1 Σ u + )--173nm Electron n excited Distribution