Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-03-07
1997-09-02
Tung, Kee M.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, 345 96, G09G 336
Patent
active
056637446
ABSTRACT:
A driving method which is used for a display device and which applies different voltages to display elements during the first through third periods in a selection period. During the first period, a first voltage having not less than a predetermined value is applied to each display element through a non-linear element of two-terminal type. During the second period, a second voltage having a level that does not cancel the first voltage is applied upon on-time, while a second voltage having a level that cancels the first voltage is applied upon off-time. During the third period, a third voltage that has an opposite polarity to the first voltage upon on-time and that has the same polarity as the first voltage upon off-time is applied. Here, the third voltage has a non-selection level upon on-time as well as off-time. Thus, an effective voltage, which is applied to the display element selected during the selection period, becomes virtually the same irrespective of display states. Thus, the influence of data during the non-selection period hardly appear on the display during the selection period. This makes it possible to reduce generation of crosstalk to a great degree. Since the voltage to be applied to the display element is higher than a predetermined voltage, it is possible to reduce the dependance of the characteristic shift of the non-linear element on display states, and consequently to suppress afterimages and seizures.
REFERENCES:
patent: 4743096 (1988-05-01), Wakai et al.
patent: 4945352 (1990-07-01), Ejiri
patent: 5247376 (1993-09-01), Wakai
U.S. application filed No. 08/499,162, Seike et al., Jul. 7, 1995.
Ise Masahiro
Seike Takeshi
Luu Matthew
Sharp Kabushiki Kaisha
Tung Kee M.
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