Abstract: A modular display system having individual stackable electronic display panels of convenient and portable size and mounting structures for the support thereof where the stackable electronic display panels mutually juxtapose, mate, and robustly and mutually and adjustably secure together by the use of connector plates at the top of stackable electronic display panels interfacing with interlocking lower connector assemblies and lower connector plate receptors at the bottom of an overhead vertically situated stackable electronic display panel and by interfacing of latches and cams of latch keeper assemblies at the sides of horizontally situated stackable electronic display panels to form a large electronic sign display. Spring-loaded slide pin assemblies foster rapid and secure connection between vertically situated stackable electronic display panels. Adjustment features are also incorporated to align each stackable electronic display panel.

Abstract: An electronic display module having a four-point latching system for incorporation into an electronic sign and process where more than one latch mechanism can be actuated simultaneously to deploy to engage the mounting panel assembly of an electronic sign. Gear operated actuating arms incorporated in an overcenter arrangement position latch in opposing latch mechanisms to position latch arms outwardly in a linear direction over a mounting panel assembly followed by pivotal latch positioning to rotationally engage the latch arms against the mounting panel assembly to secure the electronic display module to the mounting panel assembly.