Improvements for Displaying Quality of a Field-Sequential Color CRT Using a Liquid Crystal Color Shutter : A 15" LC Color Shutter CRT Using Anti-Ferroelectric Liquid Crystal Materials

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  • Taira Kazuki
    Toshiba Corp., Corporate Research & Development Center, Display Materials and Devices Laboratory
  • Tsuda Ryoji
    Toshiba Electronic Engineering Corp.
  • Saishu Tatsuo
    Toshiba Corp., Corporate Research & Development Center, Display Materials and Devices Laboratory
  • Matsuda Naotoshi
    Toshiba Corp., Corporate Research & Development Center, Display Materials and Devices Laboratory
  • Suzuki Kouhei
    Toshiba Corp., Display Devices & Components Company
  • Nishimura Takashi
    Toshiba Corp., Display Devices & Components Company

Bibliographic Information

Other Title
  • 液晶カラーシャッター方式フィールド順次カラーCRTの高画質化に関する検討 : 反強誘電性液晶材料を用いた15"液晶カラーシャッター方式CRTの開発
  • エキショウ カラー シャッター ホウシキ フィールド ジュンジ カラー CRT ノ コウガシツカ ニ カンスル ケントウ ハン キョウ ユウデンセイ エキショウ ザイリョウ オ モチイタ 15 エキショウ カラー シャッター ホウシキ CRT ノ カイハツ

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Abstract

We fabricated a prototype of a field-sequential color CRT using a liquid crystal color shutter(LCCS)with a diagonal size of 15 inches. In order to reduce a color breakup artifact, anti-ferroelectric liquid crystal materials are applied for the cell fabrication in the LCCS for the purpose of fast switching. The optical design of the LCCS was performed using the Jones matrix calculation and the optimization of the optical parameters such as transmittance of chromatic polarizers, a spectrum of a phosphor in the monochrome CRT. And film compensation of the LC cell maximized its optical efficiency and color gamut. This prototype realized displaying at a 540 Hz field frequency by adjustment of the driving sequence of the LCCS-CRT and the relation between the number of the LCCS driving stripes and the lifetime of the phosphor in the CRT.

Journal

  • ITE Technical Report

    ITE Technical Report 25.5 (0), 79-84, 2001

    The Institute of Image Information and Television Engineers

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