Light-emitting element and display device comprising same

A light-emitting element comprising:

• a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially arranged in one direction;
• a first insulating film surrounding outer peripheral surfaces of the first semiconductor layer, the active layer and the second semiconductor layer and containing an M1xOy type oxide;
• a second insulating film surrounding the first insulating film and containing an M22xO(2y-1) type oxide;
• a third insulating film surrounding the second insulating film and containing an M3xOy type oxide,
• wherein M1, M2 and M3 are each a metal material, x and y are each a natural number, a thickness of the first insulating film is greater than a thickness of the second insulating film, and a thickness of the third insulating film is equal to or greater than the thickness of the second insulating film.

A display device comprising a pixel which comprises a first electrode and a second electrode spaced apart from each other and a light-emitting element electrically connected between the first electrode and the second electrode, wherein the light-emitting element comprises:

• a first semiconductor layer, an active layer, and a second semiconductor layer, which are sequentially arranged in one direction;
• a first insulating film surrounding outer peripheral surfaces of the first semiconductor layer, the active layer and the second semiconductor layer and containing an M1xOy type oxide;
• a second insulating film surrounding the first insulating film and containing an M22xO(2y-1) type oxide;
• a third insulating film surrounding the second insulating film and containing an M3xOy type oxide;
• and
• a fourth insulating film surrounding the third insulating film,
• wherein M1, M2 and M3 are each a metal material, and x and y are each a natural number.