Display device and method for manufacturing display device

A display device comprising:

• a base substrate;
• a wiring line provided on the base substrate;
• a flattening film covering the wiring line;
• and
• a light-emitting element provided on the flattening film,
• wherein the wiring line includes a layered structure in which a first conductive layer, a second conductive layer, and a third conductive layer are layered sequentially from the base substrate side,
• in the wiring line, the second conductive layer is formed with a width smaller than a width of each of the first conductive layer and the third conductive layer, and a portion of a perimeter edge surface corresponding to the second conductive layer includes a recessed portion recessed inward of the wiring line, and the wiring line is exposed, including the perimeter edge surface, from the flattening film,
• a resin cover covering a perimeter edge surface of the second conductive layer is provided in the recessed portion in a portion of the wiring line exposed from the flattening film, and
• the resin cover has a thickness smaller than a thickness of the wiring line.