Matrix display device

Details Matrix display device Matrix display device

1989-03-22

1991-06-18

Brier, Jeffery A.

Communications: electrical

Visual indication

Movable

340765, 340784, 350333, G09G 300, G09G 336

Patent

active

050252500

ABSTRACT:
A matrix display device has row and column conductors (34,35) with display elements (32), e.g. liquid crystal elements, at their intersections each connected between a row and column conductor in series with a respective diode ring type bidirectional non-linear device (31) whose two branches each contain a plurality of diode elements. Some of the diode elements (e.g. A-C and G-I) of one or both branches (A-F and G-L) of one diode ring are shared with, and form part of, a respective branch or branches of a different diode ring or rings, with at least one other diode element of each branch (D-F and J-L) being dedicated solely to its associated display element. Thus the number of diode elements required is reduced. Further reduction can be achieved by arranging one or more diode elements of one branch to form part of the other branch of the same diode ring.

REFERENCES:
patent: 4223308 (1980-09-01), Baraff et al.
patent: 4709992 (1987-12-01), Ueno
patent: 4715685 (1987-12-01), Yaniv et al.
patent: 4731610 (1988-03-01), Baron et al.
patent: 4748445 (1988-05-01), Togashi et al.
patent: 4794385 (1988-12-01), Kuijk
patent: 4810059 (1989-03-01), Kuijk
patent: 4811006 (1989-03-01), Kuijk

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