Liquid crystal display

Details Liquid crystal display Liquid crystal display

1978-08-23

1980-09-23

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

340805, 350332, 350336, G02F 113

Patent

active

042246172

ABSTRACT:
A liquid crystal display is provided wherein dark characters, symbols and other indicia are displayed against a light background. The electrodes of the display are driven by sinusoidal or square waveforms of multiple frequencies and/or multiple phases in manner such that the electrode leads are essentially invisible during display operation.

REFERENCES:
patent: 3647280 (1972-03-01), Klein et al.
patent: 3876287 (1975-04-01), Sprokel
patent: 3891307 (1975-06-01), Tsukamoto et al.
patent: 3930719 (1976-01-01), Madrid et al.
patent: 4105297 (1978-08-01), Shimizu

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