Light-emitting element, display panel, display device, electronic device and method for producing light-emitting element

A method for producing a light-emitting element, the method comprising:

• forming at least one trench including a concave-convex portion of submicron order in a region for forming a light-emitting region of an interlayer insulating layer layered on a substrate;
• forming a first electrode on the interlayer insulating layer, the first electrode including a trench including a concave-convex portion of submicron order along the at least one trench of the interlayer insulating layer;
• forming an edge cover on the first electrode, the edge cover surrounding the trench in the first electrode, covering an end portion of the first electrode where the trench is not formed, and including an opening at a light-emitting region;
• and
• forming an electroluminescence layer and a second electrode on the first electrode,
• the electroluminescence layer including at least a light-emitting layer,
• the first electrode, the electroluminescence layer, and the second electrode being layered in this order and in contact with each other at the trench in the first electrode and,
• each of the electroluminescence layer and the second electrode including, along the trench of the first electrode, a trench including a concave-convex portion of submicron order, p1 wherein a reflective electrode is employed as one electrode out of the first electrode and the second electrode.