Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1992-08-19
1994-06-21
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 95, G09G 336
Patent
active
053231724
ABSTRACT:
A ferroelectric liquid crystal display device comprising a substrate of a plurality of scanning electrodes and a plurality of signal electrodes in the form of a matrix, a switching device formed at each intersecting point of the electrodes, a liquid crystal cell injected with a ferroelectric liquid crystal and a drive controlling means which can apply a signal having a polarity opposite to that of the signal corresponding to a required display from the signal electrode in synchronization with that the signal is applied from the scanning electrode to turn the switching device ON; apply a signal corresponding to the required display from the signal electrode in synchronization with that the signal is applied again from the scanning electrode after a predetermined period of time to turn the switching device ON; and apply a signal from the signal electrode so that the voltage applied to the liquid crystal may be zero in synchronization with that the signal is applied again from the scanning electrode after a predetermined period of time to turn the switching device ON.
REFERENCES:
patent: 4655550 (1987-04-01), Crossland et al.
patent: 4909607 (1990-03-01), Ross
Conlin David G.
Neuner George W.
Oberley Alvin E.
Sharp Kabushiki Kaisha
Wu Xiao M.
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