Liquid crystal display system

Details Liquid crystal display system Liquid crystal display system

1974-10-15

1976-08-24

Trafton, David L.

Communications: electrical

Systems

With specific power supply

350160LC, G06K 1518

Patent

active

039769941

ABSTRACT:
An improvement on a display system which displays multi-digit numeral information on a time-shared basis in response to application of bipolarity alternating voltage to liquid crystal display units. Each of the liquid crystal display units has a common electrode actuated by one of sequentially phase-shifted timing signals and a predetermined number of segment electrodes actuated by segment signals of which combinations are representative of the multi-digit numeral information to be displayed. Particularly, in the present system, visual display is provided over successive repetition of first and second display cycles in a manner that timing selection for the respective common electrodes is effected with one polarity or phase during the first display cycle and subsequently timing selection for the same is effected with the opposite polarity or phase during the second display cycle. This provides a considerable improvement in life time and immunity from blinking information caused due to the decreasing of display frequency.

REFERENCES:
patent: 3744049 (1973-07-01), Luce
patent: 3760406 (1973-09-01), Walton
patent: 3809458 (1974-05-01), Henner et al.
patent: 3863221 (1975-01-01), Kaji

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