G - Physics – 09 – F
Patent
G - Physics
09
F
40/39
G09F 9/30 (2006.01) G09F 13/04 (2006.01)
Patent
CA 1103451
ABSTRACT There is provided an electrically controlled information display device having a two-dimensional planar array of display elements in horizontal and vertical rows. Each such element can be set to a first station which it displays a light emissive area and a light reflective area, and a second state in which these areas are replaced by a corresponding area of low reflectance. The display may thus be viewed either by transmitted or by reflect- ed light. The light emissive area of each element is a light trans- missive area in an otherwise opaque member, and each display element includes a vane with a highly reflective face constituting the reflective area, and another face of low reflectance. The vane can be pivoted about a hinge axis adjacent to the light transmissive area between a first position in which the vane covers the light transmissive area exposing its low reflectance area to an observer, and a second position in which the vane uncovers the light trans- missive area and exposed its highly reflective face to the observer. me vane is movable by magnet means between its two positions.
323928
Sim & Mcburney
Unisplay S.a.
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