Abstract: An improved display panel assembly including a hollow three-dimensional display panel movable between a substantially flat storage attitude and an erect display attitude. A tubular support member extends along and is adjacent to one edge of the display panel, the tubular support member supporting the display panel in the erect attitude when that member is erected and permitting the display panel to collapse into the storage attitude when that member is collapsed. Slot and tab structure partially carried by the tubular support member and partially carried by a face wall of the display panel retains the tubular support member and, hence, the display panel itself, in the erect attitude. The hollow tubular member is structured so that, when the display panel is erected, the tubular member at least partially defines a passageway adapted to receive one end of a connector strip in supportive relation therein.