Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Dot-Matrix Display using Powder Electroluminescent Device with High Brightness

고휘도 후막 전계발광소자을 이용한 Dot-Matrix Display에 대한 연구

  • Lee, Jong-Chan (School of Electrical and Electronic Engineering, Wonkwnag University) ;
  • Park, Dae-Hee (School of Electrical and Electronic Engineering, Wonkwnag University)
  • 이종찬 (원광대학교 전기.전자공학부) ;
  • 박대희 (원광대학교 전기.전자공학부)
  • Published : 1998.07.20
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Abstract

In this study,$ 5{\times}5$ dot-matrix display was implemented with powder electroluminescent device (PELD). Generally PELD which have a luminance from powder phosphor with electric field, inserted phosphor and dielectric layer between electrodes is basic structure. To make high brightness PELD compared to conventional device, new type of PELD was proposed as follows. New PELD had only one layer, which was mixed phosphor (ZnS:Cu) and dielectric (BaTiO3) material appropriately between electrodes. To compare and estimate the conventional and new type of PELD, the EL spectrum, transferred charge density, brightness and decay time was measured. As above result, we fabricated a hish brightness $ 5{\times}5$ dot-matrix display with new type of PELD. Its brightness was 6400 $cd/m^2$ at 200 V, 400Hz.

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