a display area located over a substrate, the display area including a plurality of pixels of which each includes a first electrode, a second electrode, and an intermediate layer including an emission layer and arranged between the first electrode and the second electrode;

a pixel-defining layer covering edges of the first electrode of each of the plurality of pixels;

a spacer arranged on the pixel-defining layer and including a first portion and a second portion, and the second portion of the spacer being arranged between the first portion of the spacer and the pixel-defining layer;

a first planarization layer arranged between the pixel-defining layer and the substrate;

a second planarization layer arranged between the first planarization layer and the pixel-defining layer; and

a hole arranged apart from the first electrode in the display area, the hole being formed in the second portion of the spacer and the pixel-defining layer and extending into the second planarization layer,

wherein the hole has a first upper end and a second upper end, a first height of the first upper end from the substrate being different from a second height of the second upper end from the substrate.