New 3-in.High Luminance and High Resolution YAG Phosphor Screens for HDTV Projection CRT

DOI Web Site 6 References
  • Wang Qionghua
    Department of Opto-electronic Technology, University of Electronic Science and Technology of China
  • Cheng Jianbo
    Department of Opto-electronic Technology, University of Electronic Science and Technology of China

Search this article

Abstract

A YAG(Yttrium Aluminum Garnet) phosphor screen is developed by depositig phosphor powder on a YAG faceplate using a centrifugal sedimentation techique. Because of the YAG characteristics of higher thermal conductivity than a conventional glass faceplate, the YAG phosphor screen obtains the performances of very high luminance, high resolution, good contrast ratio and long life, which realizes the large screen HDTV projection display. The 3-inch YAG phosphor screen's light spot diameter is 85 μ m at a cathode current of 0.5mA. The green, red and blue YAG phosphor screens reach the luminances of 1.4 × 10^5cd/m^2, 6.2×10^4cd/m^2 and 8.3×10^3cd/m^2 at a current of 1.0mA and an anode voltage of 29KV, respectively, with a lifetime of 9000 hours.

Journal

  • ITE Technical Report

    ITE Technical Report 24.57 (0), 157-159, 2000

    The Institute of Image Information and Television Engineers

References(6)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top