Display device with three-level drive

Details Display device with three-level drive Display device with three-level drive

1987-05-29

1989-03-07

Heyman, John S.

Communications: electrical

Land vehicle alarms or indicators

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

350332, 340784, G02F 1133, G09G 334

Patent

active

048100595

ABSTRACT:
A three-level drive for a display device is obtained by choosing two levels for the "non-selection" voltages of a display device driven by a diode matrix. This three-level drive reduces the cut-off voltage across the diodes in the diode matrix, which provides a wider choice of diodes.

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Lechner et al.-"Liquid Crystal Matrix Displays", Proceedings of the IEEE-vol. 59-No. 11-Nov. 1971-pp. 1566-1579.
H. Kawakami-"Matrix Adressing Technology of TN Liquid Crystal Display", Oct. 1976-Biennial Display Conference, New York-U.S.A.-pp. 50-52.

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