A foldable electronic display having a layered sheet-form structure including a multi-layer flexible support substrate sheet, a flexible front sheet and a plurality of rigid heat-conductive substrates bonded to the flexible support substrate sheet, and a large number of individually digitally addressable solid-state light emitting devices hermetically encapsulated within the layered sheet-form structure and each configured to emit light in a different color than an adjacent solid-state light emitting device. The display further has a fold area located in a space between at least two of the plurality of rigid heat-conductive substrates and is configured for repetitive and reversible folding upon itself with a radius of curvature in the fold area from 1 mm to 5 mm.