Display device, display panel, and method for producing display device

A manufacturing method of a display device, the display device including, on a substrate, a plurality of pixels each including a first light-emitting element, a second light-emitting element, and a third light-emitting element, the manufacturing method including

• forming a first electrode on the substrate,
• forming an edge cover layer, the edge cover layer covering an end portion of each of the first electrode of the first light-emitting element, the first electrode of the second light-emitting element, and the first electrode of the third light-emitting element, including a first opening exposing a part of the first electrode of the first light-emitting element, a second opening exposing a part of the first electrode of the second light-emitting element, and a third opening exposing a part of the first electrode of the third light-emitting element, the first opening and the second opening being disposed to be adjacent to each other for each of the plurality of pixels in one of an (N−1)-th row and an N-th row (N is an even number of 2 or greater) along the first direction, the third opening is disposed for each of the plurality of pixels in the other of the (N−1)-th row and the N-th row, and a shortest width W1 along the first direction between the first opening and the second opening being smaller than a shortest width W2 along a second direction orthogonal to the first direction between the third opening and at least one of the first opening and the second opening,
• forming a first light-emitting layer of the first light-emitting element, a second light-emitting layer of the second light-emitting element, and a third light-emitting layer of the third light-emitting element, and
• forming a second electrode on the first light-emitting layer of the first light-emitting element, on the second light-emitting layer of the second light-emitting element, and on the third light-emitting layer of the third light-emitting element.