Bi-stable display device
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United States of America Patent
Stats
-
Dec 9, 1986
Grant Date -
N/A
app pub date -
Jun 3, 1985
filing date -
Jun 3, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display device for use in constructing remote controlling billboards, bus destination signs, and the like has a two-sided display disc which is carried on a pivoted support. The display disc is rotated by the application of force from a piezoelectric crystal drive to a point on the support which is off of the axis of rotation of the support. The crystal drive responds to DC voltage of one polarity or the other to rotate the display disc to expose a dark side or a light side to the viewer.
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Family
International Classification(s)
Cited Art Landscape
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