Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-05-04
1997-03-25
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345 89, 345147, G09G 510
Patent
active
056149247
ABSTRACT:
A liquid crystal display device includes: a multiple number of scan electrodes disposed parallel to each other; a plurality of signal electrodes disposed parallel to each other and perpendicular to the scan electrodes; and a ferroelectric liquid crystal disposed at crossing points of the scan electrodes and the signal electrodes to form pixels. In the device each of the pixels is provided with a plurality of scan electrodes so as to form a multiple number of sub-pixels constituting the pixel and a pixel dividing device is constructed such that, with a multiple number of scan electrodes A, B and C (three or more) constituting a single pixel, a line width ratio A:B:C of the scan electrodes is 1: N.sup.P -1:1 (N and P are integers of 2 or more) and these scan electrodes are displayed always in the order of A.fwdarw.B.fwdarw.C. Further, a gradational display based on the pixel dividing method is constructed such that independent, different selected voltages are applied simultaneously and directly to a multiple-number of the scan so that different voltages may be provided to sub-pixels composed of the electrodes and a single signal electrode, whereby switching of the ferroelectric liquid crystal can be controlled.
REFERENCES:
patent: 5146213 (1992-09-01), Brunel et al.
patent: 5404236 (1995-04-01), Hartmann et al.
patent: 5436747 (1995-07-01), Suzuki
patent: 5459495 (1995-10-01), Scheffer et al.
patent: 5477235 (1995-12-01), Numao
Patent Abstracts of Japan, vol. 015, No. 449 (p. 1275), 14 Nov. 1991 and JP-A-03 189622 (Citizen Watch Co Ltd) 19 Aug. 1991.
Brier Jeffery
Conlin David G.
Loui Martin
Michaelis Brian L.
Sharp Kabushiki Kaisha
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