Electroluminescent display for a timepiece
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United States of America Patent
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Sep 8, 1998
Grant Date -
N/A
app pub date -
Sep 12, 1996
filing date -
Sep 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An illuminated date ring for a calendar wristwatch for viewing the date at night through a window in the dial, employs an electroluminescent (EL) lamp beneath a transparent date ring. The EL lamp electrodes extend around the ring, and flexible spring members make sliding contact with the electrodes as the ring rotates in the movement.
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