Active matrix addressed display system

Details Active matrix addressed display system Active matrix addressed display system

1988-05-23

1990-06-05

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

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

340718, 340719, 350332, G09G 336

Patent

active

049317873

ABSTRACT:
A matrix display system includes an active matrix display device (10), for example a liquid crystal device, having a column and row array of picture elements (12) defined by opposing electrodes (16,17) with associated switching elements (11), such as thin film transistors, which are selectively operable by switching signals supplied via row conductors (14) to apply data signals supplied via column conductors (15) to the picture elements. The picture elements (12) are arranged in groups of at least two with the picture elements of each group being addressed via one row conductor (14) and one column conductor (15) and their associated switching elements (11) being operable at respective different levels of the switching signal for selective control. In this way, the number of address conductors (14,15) required can be reduced, allowing for example higher picture element densities. The picture elements of each group may be from the same row or adjacent rows. For a full color display, each group may comprise three picture elements each displaying a respective primary color.

REFERENCES:
patent: 4775861 (1988-10-01), Saito
patent: 4781438 (1988-11-01), Noguchi

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