A display device comprising: a substrate (SUB) including a display area (DPA) and a non-display area (NDA); a light-emitting element layer (EML) in the display area (DPA) of the substrate (SUB); a color conversion layer (CCL) facing the light-emitting element layer (EML) and including a bank in the display area (DPA) of the substrate (SUB) and extending from the display area (DPA) and into the non-display area (NDA) of the substrate; a capping layer in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and covering the bank ; a plurality of color filters in the display area (DPA) and in the non-display area (NDA) of the substrate (SUB), wherein the plurality of color filters in the non-display area (NDA) overlap each other; an overcoat layer in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and respectively covering the plurality of color filters ; and an optically-functional layer (LFL) in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and facing the overcoat layer , wherein in the non-display area (NDA): each of the substrate (SUB), the capping layer , each of the plurality of color filters , and the overcoat layer has a lateral side which is furthest from the display area (DPA), and the lateral side of the substrate (SUB), the lateral side of the capping layer , the lateral side of each of the plurality of color filters , and the lateral side of the overcoat layer are aligned with one another. a substrate (SUB) including a display area (DPA) and a non-display area (NDA); a light-emitting element layer (EML) in the display area (DPA) of the substrate (SUB); a color conversion layer (CCL) facing the light-emitting element layer (EML) and including a bank in the display area (DPA) of the substrate (SUB) and extending from the display area (DPA) and into the non-display area (NDA) of the substrate; a capping layer in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and covering the bank ; a plurality of color filters in the display area (DPA) and in the non-display area (NDA) of the substrate (SUB), wherein the plurality of color filters in the non-display area (NDA) overlap each other; an overcoat layer in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and respectively covering the plurality of color filters ; and an optically-functional layer (LFL) in the display area (DPA) and the non-display area (NDA) of the substrate (SUB) and facing the overcoat layer , wherein in the non-display area (NDA): each of the substrate (SUB), the capping layer , each of the plurality of color filters , and the overcoat layer has a lateral side which is furthest from the display area (DPA), and the lateral side of the substrate (SUB), the lateral side of the capping layer , the lateral side of each of the plurality of color filters , and the lateral side of the overcoat layer are aligned with one another. each of the substrate (SUB), the capping layer , each of the plurality of color filters , and the overcoat layer has a lateral side which is furthest from the display area (DPA), and the lateral side of the substrate (SUB), the lateral side of the capping layer , the lateral side of each of the plurality of color filters , and the lateral side of the overcoat layer are aligned with one another. <EOS>