Bi-stable display device

Details Bi-stable display device Bi-stable display device

G - Physics

09

F

40/50

G09F 11/02 (2006.01) G09F 9/37 (2006.01)

Patent

CA 1259191

ABSTRACT OF THE DISCLOSURE A display device for use in constructing remote controlled 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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