Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-01-26
1997-09-09
Brier, Jeffery
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
G09G 336
Patent
active
056661312
ABSTRACT:
A method of driving a two-terminal type active matrix liquid crystal display device while improving printing of image and residual image caused by the characteristics of the switching elements that change depending upon the current. The liquid-crystal display device has a plurality of data lines and scanning lines, and liquid-crystal pixels provided at the intersecting points of said data lines and said scanning lines, said liquid-crystal pixels having at least one two-terminal type switching element and being driven by a scanning signal applied to the scanning lines and by a data signal applied to the data lines. The scanning signal .phi.(n) has current application periods (27, 28, 32, 33) for flowing a current to the switching elements preceding the select periods (26, 31). The scanning signal further has holding periods after the select periods.
REFERENCES:
patent: 4730140 (1988-03-01), Masubuchi
patent: 4945352 (1990-07-01), Ejiri
patent: 5032830 (1991-07-01), Kuijk
Brier Jeffery
Citizen Watch Co. Ltd.
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