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Tunable Color Electroluminescence Display Operated by Pulse Code Modulation

  • Y. Hamakawa
  • H. Fujikawa
  • M. Nakamura
  • T. Deguchi
  • R. Fukao
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 38)

Abstract

As a new driving system of the tunable color electroluminescence (TCEL) devices, a series of technical trials on the pulse code modulation has been investigated. It has been shown from the results that the control of number of pulse ratio driving system with a constant pulse height and a constant pulse width is the best system for the continuous color mixing and variations with constant luminance. A series of technical data on the dual coloring TCEL devices are presented and discussed. This TCEL devices open a wide varieties of applications in the field of information display systems.

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Literature

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    K. Okamoto, Y. Nasu, M. Okuyama and Y. Hamakawa: Jpn. J. Appl. Phys. 20 Suppl. 20-1, 215 (1981).Google Scholar
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    Y. Oishi, T. Kato and Y. Hamakawa: Extended Abstract of the 15th Conf. on Solid State Device and Materials, 353 (Tokyo, 1983).Google Scholar
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    R. Fukao, T. Yamamoto, and Y. Hamakawa: IEICE Technical Report, EID86-37, 5 (1986) (in Japanese).Google Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • Y. Hamakawa
    • 1
  • H. Fujikawa
    • 1
  • M. Nakamura
    • 1
  • T. Deguchi
    • 1
  • R. Fukao
    • 1
  1. 1.Faculty of Engineering ScienceOsaka UniversityToyonaka, Osaka 560Japan

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