Electronic display element for electronic display device

摘要

A pixel for use in a visual matrix display including a frame having front and rear surfaces and defining an aperture; a light source oriented in the aperture; a first retroreflective surface borne by the frame and positioned adjacent to the aperture; a flap borne by the front surface and moveable along a given path of travel between a first position wherein the pixel is nonoperational, and the flap is disposed in covering relation relative to the light source, and a second operational position, wherein the flap has a second retroreflective surface which is exposed when the flap is in the second position; means borne by the frame for moving the flap along the given path of travel; and means for energizing the light source when the flap is in one of the given positions along the path of travel.