Color liquid crystal display device

Details Color liquid crystal display device Color liquid crystal display device

1990-11-15

1993-06-01

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340701, 340793, G09G 336

Patent

active

052164144

ABSTRACT:
A color liquid crystal display device in which a color filter is provided over the entire surface of the glass substrate. In a first embodiment, display electrodes extend over a plurality of color filter sectors to form segment electrodes. In a second embodiment, the transmissivity of light passing through the liquid crystal layer can be varied in levels by making the display electrodes in two-layer, operating voltage on each of the electrodes independently, and varying in levels the amplitude of voltage applied on the liquid crystal layer by the display electrodes. In a third embodiment, the amount of light transmitted in the display area of a color filter sector is controlled by two or more display electrodes which divide up the display area.

REFERENCES:
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patent: 4712877 (1987-12-01), Okada et al.
patent: 4791417 (1988-12-01), Bobak
patent: 4920409 (1990-04-01), Yamagishi
patent: 4927240 (1990-05-01), Stolov et al.

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