Display device having truncated cone shaped light emitting element

A display device comprising:

• a substrate;
• a first electrode and a second electrode spaced apart from each other and disposed on a surface of the substrate;
• a light emitting element extending in a first direction;
• an insulating layer disposed on and directly above the light emitting element;
• wherein
• the light emitting element comprises:
• a first end disposed on the first electrode in the first direction;
• and
• a second end disposed on the second electrode in the first direction,
• the first end of the light emitting element and the second end of the light emitting element are inclined with respect to the substrate,
• a diameter of the first end of the light emitting element is different from a diameter of the second end of the light emitting element,
• the light emitting element further comprises:
• a first semiconductor layer;
• a second semiconductor layer spaced apart from the first semiconductor layer;
• an active layer disposed between the first semiconductor layer and the second semiconductor layer;
• and
• an insulating film directly contacting side surfaces of the first semiconductor layer, the second semiconductor layer, and the active layer,
• wherein
• the active layer is closer to one of the first end and the second end of the light emitting element having a larger diameter,
• the insulating film does not cover an end surface of the light emitting element having the larger diameter as seen from a perspective view of the light emitting element facing the end surface of the active layer having the larger diameter,
• the insulating layer comprises a first surface which directly contacts the light emitting element and a second surface opposite to the first surface,
• the first surface of the insulating layer does not include any portion which is parallel to the second surface of the insulating layer in a cross-sectional view,
• an entirety of the active layer overlaps the second electrode in a thickness direction of the substrate, and
• the thickness direction of the substrate is a direction perpendicular to the surface of the substrate.