Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1988-04-12
1990-05-08
Brier, Jeffery A.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340784, 350334, 350350S, G09G 336
Patent
active
049242156
ABSTRACT:
A flat panel display is disclosed which comprises a row backlight assembly, e.g. a vacuum fluorescent device, and a column shutter assembly, e.g. a ferroelectric liquid crystal device, in front of the row backlight for forming luminous images. Color is achieved in the display by providing varying phase retardation of light passing through the ferroelectric shutter assembly. This is done by selectively varying the thickness of the ferroelectric liquid crystal at adjacent columns so as to correspond to the primary colors required to form a color display.
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Bell Communcations Research, Inc.
Brier Jeffery A.
Falk James W.
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