Analog electronic timepiece
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United States of America Patent
Stats
-
Mar 3, 1981
Issued Date -
N/A
app pub date -
Sep 24, 1979
filing date -
May 25, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Sixty strip-like phosphor display elements are formed on an insulated substrate to extend radially from its center at equiangular intervals, and inner and outer grids are disposed substantially concentrically with the radially extending phosphor display elements in opposing relation thereto. A thermo-electron emissive heater is disposed in opposing relation to the inner and outer grids on the opposite side from the phosphor display elements. A drive-display circuit provides, on a time-shared basis, a short hand display by selecting one of the phosphor display elements corresponding to an hours signal and applying a voltage to the inner grid alone, and provides a long hand display by selecting one of the phosphor display elements corresponding to a minutes signal and applying voltages to both the inner and outer grids.
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