Driving device for matrix-type display panel using guest-host ty

Details Driving device for matrix-type display panel using guest-host ty Driving device for matrix-type display panel using guest-host ty

1979-11-29

1982-02-23

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340805, 340791, 350346, G09G 336

Patent

active

043171150

ABSTRACT:
A driving device for a matrix-type display panel using a guest-host type liquid crystal made by adding a pleochroic dye to a nematic-cholesteric phase transition liquid crystal or a chiralnematic phase transition liquid crystal is disclosed in which the display plane of a display panel is divided into a plurality of blocks in such a manner that each block includes a plurality of scanning lines, that is, a plurality of regions are formed, only one of the regions is selected to be used a scanning region, the one-line-at-a-time scanning operation is repeated many times in the scanning region in order to write and display information to perfection, and the regions are selected successively and cyclically to be used as the scanning region.

REFERENCES:
patent: 4100540 (1978-07-01), Fujita et al.
patent: 4186395 (1980-01-01), Fujita et al.
patent: 4200822 (1980-04-01), Miller
patent: 4203104 (1980-05-01), Kmetz

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