A display device comprises a substrate in which a first subpixel and a second subpixel arranged to adjoin the first subpixel are defined, a first electrode provided in each of the first subpixel and the second subpixel on the substrate, a light emitting layer provided in each of the first subpixel and the second subpixel on the first electrode, a second electrode commonly provided in the first subpixel and the second subpixel on the light emitting layer, a trench portion provided between the first subpixel and the second subpixel, and an insulating portion filling at least a part of the trench portion.