Liquid crystal display

Details Liquid crystal display Liquid crystal display

1997-04-04

2000-01-04

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 92, 345212, 349 48, G09G 336

Patent

active

060115300

ABSTRACT:
To provide a liquid crystal display making it possible to decrease the number of signal lines to avoid narrowing the pitch of the terminal portion of a data driver and to decrease power consumption and cost.
Control lines CA and CB are used which are arranged in parallel with signal lines Dj on both sides of each signal line Dj to switch on/off switching devices T.sub.CA and T.sub.CB connected in series with the switching device T.sub.G of each pixel switched on/off by control signals in these control lines CA and CB and selects pixels in which image data is written. In this case, the level of a control signal is changed to H/L for each field or each horizontal scanning line and moreover, the polarity of an image signal to be supplied to the signal line Dj is properly changed. Furthermore, a cancel signal for controlling fluctuation in counter electrode potentials is superimposed on a control signal.

REFERENCES:
patent: 4803480 (1989-02-01), Soneda et al.
patent: 4870396 (1989-09-01), Shields
patent: 5627557 (1997-05-01), Yamaguchi et al.
patent: 5844535 (1998-12-01), Itoh et al.

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