35.1: Invited Paper: A 50‐in. Diagonal Plasma Display Panel with High Luminous Efficiency and High Display Quality

Abstract

Higher Xe content gas has been applied to an improved cell design using "T"-shaped electrode and deep WAFFLE rib. Newly developed 50-in. diagonal wide/XGA panels have a luminous efficacy, a panel luminance and a panel full screen white luminance of 1.8 lm/W, 900 cd/m 2 and 200 cd/m 2 respectively. The power consumption of the new 50-in. display monitor is 348W. The image qualities, other than luminance, have been also improved by "smooth CREAR" driving method and "pure" color filter. The driving method reproduces 768 gray levels and the gradation on low luminance region is as smooth as 4000-step gray levels. Color gamut reproducing full NTSC area and a brightroom contrast ratio of 120:1 under ambient illumination on the screen of 150 lx have been obtained by the color filter. After all the newly developed plasma displays (PDPs here after) show high display quality and the total display performance of them, as a large-screen TV, excels that of any other display device.

Discharge characteristics of a plasma display using vertical auxiliary electrodes

“…All the characteristics of the panel are observed at the median of the voltage margin measured. The luminance (cd/㎡) is measured by luminance colorimeter (BM-7, TOPCON) and electrical power consumption (W) is calculated using P = P on -P off (1) where P on and P off are the power consumptions when all the cell is on and off, respectively. Luminous efficiency is estimated as…”

“…With the laboratory samples, the efforts of getting higher efficiency have been focused on structural optimizations, low temperature discharges, discharge gases and new electrode design. For example, the Tshaped electrode design combined with waffle-shaped rib structure led to the increase in 40% of luminance efficiency [1]. The application of low electric field discharges, such as positive column and RF (radio frequency) discharge [2] were also proposed.…”

Application of two-dimensional numerical simulation for luminous efficiency improvement in plasma display panel cell

“…The continuity equation for the spatial and temporal density evolution is (1) where , , and are the number density, the particle flux, and the source term for species , respectively. The source term is determined by particle generation and loss, i.e., ionization and recombination.…”

“…Research and development activity in plasma displays is aimed at improving its performance in such areas as wide viewing angle, high luminous efficiency, high resolution, long life time, and good contrast [1], [2]. Since PDP is very thin and light in weight compared with cathode ray tubes (CRTs), it can be hung on the wall.…”

A new driving waveform for stable address discharge in an alternating current plasma display panels

“…Because of the progress made in a variety of affiliated technologies and its many advantages which make it likely to supplant the existing display devices, the AC PDP has taken a leading position in the display market. However, in spite of its many advantages, such as its suitability for large flat panel displays, wide viewing angle and rich color reappearance, the AC PDP still suffers from several problems, such as its low efficiency, the requirement of high speed addressing for high resolution PDPs, dynamic false contour (DFC), and so on [1]- [3]. Among them, the crosstalk generated during the address discharge is one of the most important problems affecting high resolution AC-PDPs.…”