Multi-color liquid crystal display and system

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

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Details

340784, 340765, 350332, 350333, G09G 128

Patent

active

045816085

ABSTRACT:
A multi-color liquid crystal display has a one-dimensional or two-dimensional array of at least one display cell, with a plurality of different liquid crystal host/guest dichroic dye compositions in each cell. Each of the different liquid crystal compositions may be provided within separate microcapsules, with the totality of micro-capsules being blended to provide the total composition filling the cell volume or dielectric spacers may be utilized to divide the volume of each display cell into a like plurality of subvolumes, each containing a different liquid crystal material. Liquid crystal hosts of substantially-constant or variable dielectric anisotropy magnitude and polarity are selected to cause different ones of the plurality of compositions within a cell to switch between transmission and absorption of various visible-wavelengths regions as the frequency and amplitude of an electric field within the cell is varied by control electronics of a display system.

REFERENCES:
patent: 4035690 (1977-07-01), Roeber
patent: 4241339 (1980-12-01), Ushiyama
patent: 4448490 (1984-05-01), Shibuya et al.
patent: 4485376 (1984-11-01), Noble

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