Importance of the dependence of the secondary electron emission coefficient on E/p0 for Paschen breakdown curves in ac plasma panels

Abstract

Apparent deviations from Paschen’s law, observed in ac plasma panels, have been resolved by generalizing the breakdown criterion to include the dependence of the secondary electron emission coefficient on E/p0. Incorporation of this dependence into the proposed effective coefficient involves consideration of both the back-diffusion phenomenon and the influence of E/p0 on the efficiency of metastable atom generation. Calculated voltage breakdown curves in pure neon and neon plus 0.1% argon mixture are in good agreement with experimental data for both the metal electrode dc discharges and the insulator-covered electrode discharges found in ac plasma panels.

Secondary emission of dielectrics used in plasma display panels

“…The values for the dielectric are greater than those obtained for the metal confirming the strong secondary emission of MgO. In addition, concerning MgO, our values are slightly lower than those of Sahni and Lanza, 8 ϭ5 Torr cm), we obtain ␥Ϸ0.3, whereas their calculations give ␥Ϸ0.5. Values of ␥ close to ours have also been obtained 12 by measuring breakdown voltages with real plasma panels, a value of pd fixed at 5 Torr cm, and for different gas mixtures composed of helium, neon, and xenon.…”

One-dimensional numerical simulation of ac discharges in a high-pressure mixture of Ne+0.1% Ar confined to a narrow gap between insulated metal electrodes

“…ax - (20) where q is the absolute value of the electronic charg·e and E is the permittivity of the gas. The constant of integration for the electric field is obtained 6 by imposing the boundary condition, that at any instant,…”

Numerical Calculation of the Characteristics of an Isolated AC Gas Discharge Display Panel Cell

“…The model includes the back-scattering to the cathode of the secondary emitted electrons as a function of the ratio of the electric field at the cathode to the gas pressure [16,17]. In addition, allowance was made for different The model Figure 1 shows schematically the various volume reactions included in the analysis.…”

“…The exact choice of -y,, for the neon metastables is not critical, and it is chosen to be the same as that for neon ions. Estimates for the average speed of the emitted electrons are available for the neon ions, argon ions, and neon metastables [16]. Note that for simplicity, the atomic and molecular neon ions were assumed to behave identically.…”