Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1982-05-21
1985-06-11
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
307318, 357 13, 340719, G09G 330
Patent
active
045231893
ABSTRACT:
A thin-film EL display device incorporates a MOS active matrix. Each of the MOS transistor arrays is additionally provided in parallel with a Zener diode for the purpose of protecting the device from a high voltage. This Zener diode has a breakdown voltage characteristic corresponding to a difference between a luminous voltage and a non-luminous voltage of an EL display element and clamps the voltage across the MOS transistor, in the "OFF" state, to a voltage less than or equal to non-recoverable breakdown voltage.
REFERENCES:
patent: 3673428 (1972-06-01), Athanas
patent: 3754171 (1973-08-01), Anzai et al.
patent: 3936863 (1976-02-01), Olmstead
patent: 4115709 (1978-09-01), Inove et al.
patent: 4171492 (1979-10-01), Burth
Proceedings of the Sid, "Thin-Film Transistor Switching of Thin-Film Electro-Luminescent Display Elements", by Kun et al., vol. 21/2, 1980, pp. 85-91.
"A New Recipe for Viewability: Thin Film EL+Black Layer+The TFT", by K. O. Fugate, Thin Film Devices Laboratory, pp. 20-28.
Society for Information Display, "Active Matrix Addressing Techniques", by John E. Gunther, Session S-1, pp. 1-34.
Gondo Hiroyuki
Kurahashi Keizo
Miura Shoshin
Oki Ken-ichi
Takahara Kazuhiro
Curtis Marshall M.
Fujitsu Limited
Kovalick Vincent P.
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