Illuminating device for digital display wristwatches

Details Illuminating device for digital display wristwatches Illuminating device for digital display wristwatches

1974-03-13

1976-04-13

Hix, L. T.

58 23R, 58 855, G04B 1934

Patent

active

039495469

ABSTRACT:
An electronic timepiece having a quartz crystal oscillator serving as a time standard, a digital display, and integrated divider and driving circuits for dividing the high-frequency signal from the oscillator circuit into low-frequency timing signals for the direct driving of the liquid crystal display. A light source is disposed proximate the liquid crystal display. A single power source is utilized to energize the oscillator circuit and divider circuits, as well as to provide a voltage sufficient to energize the driving circuit, liquid crystal display and light source.

REFERENCES:
patent: 2167463 (1939-07-01), Regester
patent: 2358422 (1944-09-01), Springer
patent: 2895038 (1959-07-01), Whiston
patent: 2915577 (1959-12-01), Bronstert
patent: 2974474 (1961-03-01), Wegner
patent: 3540207 (1970-11-01), Keeler
patent: 3672155 (1972-06-01), Bergey et al.
patent: 3712047 (1973-01-01), Girard
patent: 3747322 (1973-07-01), Eckenrode
patent: 3748456 (1973-07-01), Brien
patent: 3788061 (1974-01-01), Tornquist et al.

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