Wrist watches

Details Wrist watches Wrist watches

1973-06-08

1976-02-17

Jackmon, Edith Simmons

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307 38, 340336, G04C 1902, H02J 314

Patent

active

039383180

ABSTRACT:
There is disclosed a battery powered wrist watch utilizing solid state circuits and a liquid crystal display to eliminate mechanical parts. Complementary metal oxide semiconductor (CMOS) devices are used to drive liquid crystal display cells. The liquid cells dissipate only microwatts of power when energized and the CMOS devices require appreciable power only when switching from one state to the other. The combination of the liquid crystal display with the CMOS driving circuitry provides a low power, compact, portable watch.

REFERENCES:
patent: 3560998 (1971-02-01), Walton
patent: 3613351 (1971-10-01), Walton
patent: 3672155 (1972-06-01), Bergey et al.
patent: 3722206 (1972-03-01), Bergey

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