Wrist watch

Details Wrist watch Wrist watch

1975-07-23

1976-11-23

Jackmon, E. S.

Buckles, buttons, clasps, etc.

58 23BA, 240 643, G04C 300, G04B 1930

Patent

active

039928748

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 crystal 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: 3514939 (1970-06-01), Cattin
patent: 3560998 (1971-02-01), Walton
patent: 3613551 (1971-10-01), Walton

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