Display device including electrode including graphene and metal layers of hexagonal closed packed structure and method of manufacturing the same

A display device comprising:

• a circuit layer;
• and
• a display element layer disposed on an upper surface of the circuit layer, wherein the display element layer includes a light-emitting element, and a pixel-defining film, through which a pixel opening is defined,
• wherein the light-emitting element includes a first electrode exposed through the pixel opening, a second electrode disposed opposite to the first electrode, and a light-emitting layer disposed between the first electrode and the second electrode, and
• wherein the first electrode includes:
• a first layer including graphene;
• a second layer disposed below the first layer and including Zn or Ti;
• and
• a third layer disposed below the second layer and including a transparent conductive oxide, and
• wherein the first layer and the second layer have the same crystal structure.