Display device with light emitting elements having different widths

A display device comprising:

• contact electrodes disposed on a substrate;
• light-emitting elements disposed on the contact electrodes;
• and
• an insulating layer defining emission areas that correspond to the light-emitting elements, wherein
• the light-emitting elements comprise:
• a first light-emitting element that emits a first light having a blue color;
• a second light-emitting element that emits a second light having a green color;
• and
• a third light-emitting element that emits a third light having a red color,
• a width of the first light-emitting element is greater than a width of the second light-emitting element,
• the width of the first light-emitting element is greater than a width of the third light-emitting element,
• each of the light-emitting elements comprises:
• a first semiconductor layer
• a second semiconductor layer;
• and
• an active layer disposed between the first semiconductor layer and the second semiconductor layer,
• the first light-emitting element comprises a first active layer,
• the second light-emitting element comprises a second active layer,
• the third light-emitting element comprises a third active layer,
• each of the first active layer, the second active layer, and the third active layer contains indium,
• a content of indium in the first active layer is smaller than a content of indium in the second active layer,
• the content of indium in the first active layer is smaller than a content of indium in the third active layer, and
• the content of indium in the second active layer is smaller than the content of indium in the third active layer.