Liquid crystal display system with variable backlighting for dat

Details Liquid crystal display system with variable backlighting for dat Liquid crystal display system with variable backlighting for dat

1986-07-17

1992-09-01

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

340793, 359 48, G02F 113

Patent

active

051442922

ABSTRACT:
A data processing device is provided with a liquid crystal display incorporating electroluminescent backlighting, in which the electroluminescent backlighting panel is provided with several degrees of luminosity. A selection circuit specifies the degree of luminosity to allow the electroluminescent backlighting panel to generate the selected luminosity level.

REFERENCES:
patent: 3674341 (1972-07-01), Hedman et al.
patent: 4251755 (1981-02-01), Bryden
patent: 4319237 (1982-03-01), Matsuo et al.
patent: 4500173 (1985-02-01), Leibowitz et al.
patent: 4655553 (1987-04-01), Klein
Patents Abstracts of Japan, vol. 8, No. 79 (P-267) [1516], Apr. 11, 1984; & JP-A-58 221 828 (Sharp K. K.) Dec. 23, 1983 *Abstract*.
Patents Abstracts of Japan, vol. 8, No. 211 (P-303) [1648] Sep. 26, 1984; & JP-A-59 94 740 (Toshiba K.K.) May 31, 1984 *Abstract*.

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