Folding display panels for large-format displays

A folding display panel apparatus, comprising:

• a plurality of columns of display panels, each of the columns of display panels configured to transition between a collapsed z-folded configuration and an expanded configuration, wherein each of the columns of display panels includes:
• first and second ones of the display panels that each include a front side having an array of light-emitting pixels, a back side having a movable member, a top edge, opposite side edges and a bottom edge, with the first and second display panels arranged edge-to-edge;
• at least one flexible support cable that mechanically and flexibly connects the first and second display panels and that is configured to support the first and second display panels in a vertical arrangement and to fold with the first and second display panels into a collapsed arrangement;
• and
• at least one electrical cable that electrically connects the first and second display panels, the at least one electrical cable including at least one data wire and at least one power wire, the at least one electrical cable having a fixed-length cable section that runs between the first and second display panels, wherein one end of the fixed-length cable section is attached to at least one of the first or second display panel movable members, and wherein the data and power wires each have an amount of slack that resides outside of the fixed-length cable section adjacent the movable member,
• wherein the movable member is configured so that when the first and second display panels are folded front-side to front-side, the movable member moves toward an edge of the one of the first and second display panels to accommodate a bend in the fixed-length cable section of the at least one cable, while the amount of slack in the data and power wires changes.