A display device includes a pixel circuit layer including a base layer and a pixel circuit, a first electrode on the pixel circuit layer, light emitting portions including a first light emitting portion defining first sub-pixel area and a second light emitting portion defining a second sub-pixel area, and a partition wall between the first and second light emitting portions, wherein the partition wall includes a first layer, a second layer on the first layer, and a third layer on the second layer, wherein the first layer has a first thickness, the second layer has a second thickness, the third layer has a third thickness, and the partition wall has a fourth thickness that is a sum of the first thickness to the third thickness, and wherein the first thickness and a thickness of the light emitting portion correspond to each other.