A display device includes a substrate including a display area and a non-display area; driving chips on the display area; light-emitting elements electrically connected to the driving chips; and a pad on the non-display area and including a pad electrode electrically connected to the light-emitting elements, wherein the display area extends in row and column directions, wherein the display area is divided into block areas in each of both opposing sides around a central column virtual line of the display area, wherein both block areas are arranged in the row direction in a symmetrical manner to each other around the central column virtual line, wherein the block areas are arranged in the column direction, wherein power signals from the pad are directly applied to the driving chips, wherein data and clock signals from the pad are applied to the driving chips of each of the block areas.

A display panel includes a display area, a non-display area adjacent to the display area, a base layer including a first resin layer and a second resin layer defining an upper resin opening, a pad electrode between the first resin layer and the second resin layer, a driving element layer including a barrier layer defining a barrier opening, a data line above the barrier layer, a conductive pattern including a pad conductive portion, an insulating layer defining a connection opening and a main opening, and a bridge conductive pattern, and a display element layer above the second resin layer.

A display panel includes a display area, a non-display area adjacent to the display area, a base layer including a first resin layer and a second resin layer defining an upper resin opening, a pad electrode between the first resin layer and the second resin layer, a driving element layer including a barrier layer defining a barrier opening, a data line above the barrier layer, a conductive pattern including a pad conductive portion, an insulating layer defining a connection opening and a main opening, and a bridge conductive pattern, and a display element layer above the second resin layer.

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 bank on the insulating layer, and a light emitting device disposed on the bank and overlapping the bank. A groove is disposed on an upper surface of the bank, and the light emitting device is disposed in the groove of the bank.

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 bank on the insulating layer, and a light emitting device disposed on the bank and overlapping the bank. A groove is disposed on an upper surface of the bank, and the light emitting device is disposed in the groove of the bank.

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 bank on the insulating layer, a light emitting device disposed on the bank and overlapping the bank, an electrode disposed on the light emitting device and electrically connected to the light emitting device, an optical layer surrounding a side of the light emitting device, and an inorganic layer between the optical layer and the electrode.

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 bank on the insulating layer, a light emitting device disposed on the bank and overlapping the bank, an electrode disposed on the light emitting device and electrically connected to the light emitting device, an optical layer surrounding a side of the light emitting device, and an inorganic layer between the optical layer and the electrode.

A display device includes a substrate including a display area and a non-display area. A plurality of first driving chips are disposed on the display area, and a plurality of light emitting elements are disposed on the display area and electrically connected to the first driving chip. A plurality of second driving chips are disposed in each of spline areas defined in each of four corners of the display area, where each spline area has an arc shape. A plurality of crack detection lines extend along a peripheral area of the display area. The plurality of second driving chips are not electrically connected to the plurality of light emitting elements but are electrically connected to the plurality of crack detection lines.

A display device includes a substrate including a display area and a non-display area. A plurality of first driving chips are disposed on the display area, and a plurality of light emitting elements are disposed on the display area and electrically connected to the first driving chip. A plurality of second driving chips are disposed in each of spline areas defined in each of four corners of the display area, where each spline area has an arc shape. A plurality of crack detection lines extend along a peripheral area of the display area. The plurality of second driving chips are not electrically connected to the plurality of light emitting elements but are electrically connected to the plurality of crack detection lines.

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.