Abstract
Basic research that uses an experimental panel with the aim of improving its discharge characteristics such as the luminous efficiency of plasma display panels (PDPs) is performed. Similar experimental PDPs of AC- and DC-type cells with opposing electrodes were manufactured, and their luminous efficiencies were compared. Although both panels are of the same size and gas composition (He-Xe (10%) and 40.0kPa), etc., the cathode material is different; the cathode materials of the AC- and DC-type cells are MgO and Al, respectively. The luminous efficiency of the AC-type cell with a simple pulse drive (20kHz:40kpulses/sec) is higher than that of the DC-type cell with a pulse memory drive of approximately 40%. The relationship between discharge current and the intensity of near-infrared (IR) ray emitted from the upper energy levels 2p of Xe*(1s4) was examined for the AC-type cell, and the near-IR light, visible light and phosphor P47 (Y2SiO5:Ce) light from the discharge were also observed using a high-speed gate camera. On these grounds we have come to the conclusion that the distribution of Xe*(1s4), etc. is more localized than that of the DC-type cell on the AC-type cell near the phosphor, and luminous efficiency increases.
