Driving method for display panels

Details Driving method for display panels Driving method for display panels

1981-02-20

1983-11-01

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340765, 340805, 350333, G09G 336

Patent

active

044132565

ABSTRACT:
A display device includes a combined dynamic scattering mode and twisted nematic mode cell structure including at least one first display electrode oriented in a first direction and a plurality of second display electrodes in a second direction. The plurality of second display electrodes oriented are supplied with a plurality of scanning signals of sequentially shifted phases with polarity inverted at a predetermined interval of time, whereas the first electrode is supplied with frame signals indicative of information to be displayed and having polarity inverted at the predetermined interval. In order to minimize variations in the threshold level of the display device, a plurality of pulse signals having a pulse width shorter than the pulse width of said scanning signals are added to the frame signals.

REFERENCES:
patent: 3809458 (1974-05-01), Heuner
patent: 3922667 (1975-11-01), Ueda et al.
patent: 4236155 (1980-11-01), Nagata
patent: 4241339 (1980-12-01), Ushiyama

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