Abstract: A display may be provided with display layers and a backlight unit. The display layers may include a thin-film transistor layer having a ledge. The display layers may include an upper polarizer layer and a lower polarizer layer. A color filter layer, liquid crystal layer, and the thin-film transistor layer may be interposed between the upper and lower polarizer layers. A display cover layer may overlap the display layers to serve as a protective layer. Gap filler may be placed between the thin-film transistor ledge and the display cover layer to help prevent the ledge from bending upwards. Support structures may be placed between the thin-film transistor structures and the backlight unit to help prevent the ledge from bending downwards. The support structures may include an extended edge portion of the lower polarizer, a stiffener layer, gap filler, adhesive layers, and other supporting structures.