A display device may include a substrate including a display area and a non-display area outside the display area; a plurality of pixel driving circuits disposed on the display area of the substrate; a plurality of light-emitting elements disposed on the pixel driving circuit and electrically connected to each pixel driving circuit; a plurality of pad electrodes disposed on the non-display area of the substrate; at least one or more multilayer insulating structure disposed in a lower side of the plurality of pad electrodes; and one or more reinforcement patterns disposed between the pad electrode and the multilayer insulating structure.

A display device may include a substrate including a display area and a non-display area outside the display area, a pixel driving circuit on the display area of the substrate, a plurality of light-emitting elements disposed on the pixel driving circuit and electrically connected to the pixel driving circuit, a plurality of pad electrodes on the non-display area of the substrate, and a passivation layer on the plurality of pad electrodes of the non-display area and the display area, and the passivation layer may include a first opening area between a pair of pad electrodes of the plurality of pad electrodes in the non-display area.

A display device can include a substrate including a display region and a non-display region, a plurality of light-emitting elements disposed on the substrate, and a plurality of stopper layers disposed under or on the light-emitting elements. At least one of the plurality of stopper layers includes a stopper region disposed in the non-display region. The display device can further include a pixel driving circuit disposed on the substrate and electrically connected to the light-emitting elements. The stopper layers are further disposed under or on the pixel driving circuit.

A display device can include a substrate including a display region and a non-display region, a plurality of light-emitting elements disposed on the substrate, and a plurality of stopper layers disposed under or on the light-emitting elements. At least one of the plurality of stopper layers includes a stopper region disposed in the non-display region. The display device can further include a pixel driving circuit disposed on the substrate and electrically connected to the light-emitting elements. The stopper layers are further disposed under or on the pixel driving circuit.

A display device can include a substrate having a display area and a non-display area, first electrodes disposed on the substrate, a light-emitting element disposed on each of the first electrodes, and a first passivation layer disposed on the first electrode. The first electrodes can include a first driving electrode disposed in the display area and a first dummy electrode disposed in the non-display area. The first passivation layer can include a first opening disposed on the first dummy electrode.

A display device can include a substrate having a display area and a non-display area, first electrodes disposed on the substrate, a light-emitting element disposed on each of the first electrodes, and a first passivation layer disposed on the first electrode. The first electrodes can include a first driving electrode disposed in the display area and a first dummy electrode disposed in the non-display area. The first passivation layer can include a first opening disposed on the first dummy electrode.

The present specification discloses a display device including a substrate, a first buffer layer disposed on the substrate, a second buffer layer disposed on the first buffer layer, a plurality of insulating layers disposed on the second buffer layer, and an inorganic light-emitting element disposed on the plurality of insulating layers, wherein the plurality of insulating layers include an organic material, the first buffer layer and the second buffer layer include an inorganic material, and a magnitude of compressive stress of the first buffer layer is different from a magnitude of compressive stress of the second buffer layer.

The present specification discloses a display device including a substrate, a first buffer layer disposed on the substrate, a second buffer layer disposed on the first buffer layer, a plurality of insulating layers disposed on the second buffer layer, and an inorganic light-emitting element disposed on the plurality of insulating layers, wherein the plurality of insulating layers include an organic material, the first buffer layer and the second buffer layer include an inorganic material, and a magnitude of compressive stress of the first buffer layer is different from a magnitude of compressive stress of the second buffer layer.

A display device may include a substrate including a display area and a non-display area outside the display area, a pixel driving circuit on the display area of the substrate, a plurality of light-emitting elements disposed on the pixel driving circuit and electrically connected to the pixel driving circuit, a plurality of pad electrodes on the non-display area of the substrate, and a passivation layer on the plurality of pad electrodes of the non-display area and the display area, and the passivation layer may include a first opening area between a pair of pad electrodes of the plurality of pad electrodes in the non-display area.

A display device includes a substrate including a display area and a non-display area, a pixel driving circuit in the display area on the substrate, an insulating layer on the pixel driving circuit, a plurality of banks including a first bank and a second bank, and a plurality of light emitting devices including a first light emitting device on the first bank and a second light emitting device on the second bank. The first bank and the second bank are disposed on the insulating layer. The first light emitting device overlaps the first bank and the second light emitting device overlaps the second bank. The insulating layer includes a groove in a region between the first bank and the first bank.