Matrix display

Claim 1

A movable display assembly adapted for use in a spatial arrangement that includes a plurality of individually controlled assemblies, said display assembly comprising: a frame surrounding an open window; bearing means transversely spanning the window on said frame, said bearing means defining a transverse pivot axis dividing the window asymmetrically into first and second window sections; a disk assembly pivotally mounted on said frame by said bearing means for movement relative to the frame about the pivot axis, said disk assembly including a thin disk having visually contrasting outer surfaces at opposite sides thereof; and means on said disk assembly and said frame for selectively positioning said disk assembly about said axis; said disk having first and second disk ends extending oppositely from the pivot axis, the first and second disk ends having greater widths between the side edges and lengths from the pivot axis to the end edges than the corresponding widths and lengths of the second and first window sections, respectively, for sealing about the disk periphery to prevent light passage when the disk is in a background position; said first disk end having smaller widths and lengths than the corresponding widths and lengths of the first window section for allowing the disk to freely rotate thereinto.