Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1984-06-28
1987-03-24
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340789, 340805, 358213, 358241, G09G 312
Patent
active
046528725
ABSTRACT:
A driving system for a display panel wherein a large number of data lines and scan lines are arranged in matrix fashion and wherein a display cell is disposed at each crossing point includes a row drive for supplying a first voltage to row side electrodes through the scan lines, a column drive for supplying a second or a third voltage to column side electrodes through the data lines, and a refreshing drive for supplying a reverse polarity voltage between the electrodes of each display cell after scanning of all the scan lines. The column drive performs a modulation drive by applying the voltages from the data lines selectively to the display cells according to an intended luminescence or non-luminescence of the cells. The row drive performs a write drive by sequentially applying the first voltage to the scan lines. The refreshing drive performs a refreshing operation by applying a predetermined refreshing voltage to the display cells after completion of the modulation and write drives. Thus, an image is displayed. This system obviates a pre-charge step and hence increases the scanning speed and reduces the power consumption.
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Curtis Marshall M.
Fasse W. G.
Kane, Jr. D. H.
NEC Kansai, Ltd.
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