Matrix-Driven Electron Source for MDS Flat-Panel CRT

A matrix-driven electron source essential for a large high-definition MDS flat-panel CRT has been developed. This electron source consists of twe parts, triode with a vertically extended line cathode and two grids, and switching electrodes for vertical scanning by an electron beam emitted by the lin...

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Bibliographic Details
Published inThe Journal of the Institute of Television Engineers of Japan Vol. 44; no. 11; pp. 1588 - 1595_1
Main Authors Hamada, Kiyoshi, Nonomura, Kinzo, Tomii, Kaoru
Format Journal Article
LanguageJapanese
Published The Institute of Image Information and Television Engineers 20.11.1990
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Summary:A matrix-driven electron source essential for a large high-definition MDS flat-panel CRT has been developed. This electron source consists of twe parts, triode with a vertically extended line cathode and two grids, and switching electrodes for vertical scanning by an electron beam emitted by the line cathodes. This structure allows a high emission current with a low voltage modulation signal. Driving circuits and the structures of the grids are simplified by a new driving method in which a modulation signal is applied to directly-heated type line cathodes instead of grids. Beam current from each segment of the electron source is made uniform by a newly-developed correction circuit which equalizes the cut-off voltages of each segment.
ISSN:0386-6831
1884-9652
DOI:10.3169/itej1978.44.1588