Active matrix liquid crystal display unit capable of suppressing

Details Active matrix liquid crystal display unit capable of suppressing Active matrix liquid crystal display unit capable of suppressing

1994-06-27

1996-10-15

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 96, 345209, G09G 336

Patent

active

055658830

ABSTRACT:
In an active matrix liquid crystal display unit for displaying data on a liquid crystal panel in response to a control signal, a drain driver is supplied with the control signal to supply a first alternating voltage signal of a predetermined phase to odd-numbered drain buses for drain electrodes of thin-film transistors arranged in a matrix of the panel and to supply even-numbered drain buses with a second alternating voltage signal having a reversed phase which is reversed relative to the predetermined phase. A gate driver supplies the gate buses with electric power cyclically in cycles. Preferably, the first and the second alternating voltage signals have a common period which is equal to a time interval during which the electric power is supplied successively to two adjacent ones of the gate buses. This avoids flicker and cross talk in a display of the data. More preferably, the first and the second alternating voltage signals are given either in each cycle or in a preselected plurality of cycles one of a predetermined number of voltages to cope with a greater number of steps of a tone of the display.

REFERENCES:
patent: 4386352 (1983-05-01), Nonomural et al.
patent: 4842371 (1989-06-01), Yasuda et al.
patent: 4926168 (1990-05-01), Yamamoto et al.
patent: 5017914 (1991-05-01), Uchida et al.
patent: 5182549 (1993-01-01), Taniguchi et al.
patent: 5216415 (1993-06-01), Ono et al.

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