Dynamics of a coplanar-electrode plasma display panel cell. I. Basic operation

Abstract

Plasma display panels ͑PDPs͒ are a technology for large-area high-brightness flat panel displays. There is considerable interest in improving PDP efficiency by optimizing the cell design, input voltage characteristics, operating conditions and gas mixture. In this article, we report on a two-dimensional computer model for PDPs which has been used to investigate the operation of a coplanar-electrode PDP cell sustained in He/Ne/Xe gas mixtures. The plasma transport equations are implicitly integrated in time to enable simulation of complex gas mixtures and PDP cell designs. To resolve the details of the electron dynamics, the electron temperature is computed by solving the electron energy equation. A Monte Carlo simulation for secondary electrons and a radiation transport model for visible light emission are also employed. The basic operation of the PDP cell is described in this article. The first pulse was usually found to initiate a discharge between the top electrodes and the bottom address electrode, which was grounded. Only after a positive surface charge was formed on the bottom dielectric did the discharge shift to being between the coplanar electrodes. For our conditions, radiation from Xe 2 * made a larger contribution to exciting the phosphor for visible light emission than radiation from the resonance states of Xe since radiation from Xe 2 * is optically thin.

Energy loss mechanisms in the microdischarges in plasma display panels

“…Contrary to Ref. 12, we found that the electron energy equation considerably improves the reliability of the PDP model; for the calculated discharge efficiency the difference with the local field approximation may be as large as a factor of two. The transport Eqs.…”

Electron Temperatures and Electron Densities in Microwave Helium Discharges with Pressures Higher than 0.1 MPa

“…Since the high gas pressure enhances the excimer density, the rate of this reaction may be higher at a higher gas pressure. In addition, the third possibility is the production of electrons with medium energy via He M + He M → He + + e + He [16,17]. The rate of this reaction may become higher at a higher gas pressure because of the higher density of the metastable state (He M ).…”

Effet de la pression de mélange sur le rayonnement VUV du xénon dans le cas d'enseignes lumineuses sans mercure excitées en régime d'impulsions électriques

“…Des recherches précédentes menées dans le cadre d'une collaboration entre le GREMI (Orléans), le CPAT ( Toulouse) et la société Aupem Sefli (Gien) ont permis de démontrer l'intérêt des mélanges à bases de gaz rares pour remplacer les dispositifs actuels d'enseignes lumineuses fonctionnant sur des décharges en vapeur de mercure. Il est apparu qu'un mélange binaire néon-xénon est un couple intéressant, compte tenu de la capacité du néon à homogénéiser la décharge, et surtout celle du xénon d'émettre intensément dans le domaine de l'ultraviolet du vide, et en particulier la raie de résonance à 147 nm (transition Xe(1s 4 )→Xe(1s 0 )), qui permet d'exciter les phosphores. De plus, il a été montré que la durée de vie d'une enseigne à base de gaz rare atteignait celle des dispositifs au mercure.…”