Substrates that are bonding targets are bonded in ambient atmosphere via bonding films, including oxides, formed on bonding faces of the substrates. The bonding films, which are metal or semiconductor thin films formed by vacuum film deposition and at least the surfaces of which are oxidized, are formed into the respective smooth faces of two substrates having the smooth faces that serve as the bonding faces. The bonding films are exposed to a space that contains moisture, and the two substrates are overlapped in the ambient atmosphere such that the surfaces of the bonding films are made to be hydrophilic and the surfaces of the bonding films contact one another. Through this, a chemical bond is generated at the bonded interface, and thereby the two substrates are bonded together in the ambient atmosphere. The bonding strength γ can be improved by heating the bonded substrates at a temperature.

A display device and method for fabrication thereof includes a plurality of pixel electrodes and common electrode connection parts that are spaced from each other on a first substrate, a plurality of light emitting elements on the plurality of pixel electrodes, a plurality of common electrode elements on the common electrode connection parts, and a common electrode layer on the plurality of light emitting elements and the plurality of common electrode elements, wherein each of the plurality of light emitting element includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, each of the plurality of common electrode elements includes at least the second semiconductor layer, and the common electrode layer includes a same material as the second semiconductor layer to be connected to the second semiconductor layers of the plurality of light emitting elements.

A display device includes a substrate including a display area in which pixels are located, and a non-display area, first and second electrodes in the display area and spaced from each other, light emitting elements between the first and second electrodes, connection electrodes electrically connected to the light emitting elements, a fan-out line electrically connected to the pixels in the non-display area, a first pad electrode on the fan-out line, a pad connection electrode on the fan-out line and the first pad electrode, and electrically connecting the fan-out line and the first pad electrode, and a second pad electrode at a same layer as at least one of the connection electrodes, and contacting the first pad electrode.

Provided are a display device and a tiled display device. The display device according to one or more embodiments includes a substrate, transistors above the substrate, a first organic insulating layer above the transistors, a first connection electrode above the first organic insulating layer, and electrically connected to at least one of the transistors, a second connection electrode above the first organic insulating layer, a first power supply line configured to receive a first power voltage, above the first organic insulating layer, and connected to the second connection electrode, and a second organic insulating layer above the first power supply line, and defining an opening area exposing the first power supply line.

A light-emitting element including: a first semiconductor layer doped with a first type of dopant; a second semiconductor layer doped with a second type of dopant that is different from the first type of dopant; and an active layer between the first semiconductor layer and the second semiconductor layer, wherein a length of the light-emitting element measured in a first direction, which may be a direction in which the first semiconductor layer, the active layer, and the second semiconductor layer may be arranged, may be shorter than the width measured in a second direction that is perpendicular to the first direction.

A display device including a substrate having a first side surface, a first surface, a second surface opposite to the first surface, a first chamfered surface extending from an edge of the first surface to the first side surface, a second chamfered surface extending from an edge of the second surface t the first side surface, a pixel on the first surface of the substrate and including a light emitting element configured to emit light, a first driving pad at the edge of the first surface of the substrate and electrically connected to the pixel, and a side wiring on the first surface, the first chamfered surface, the first side surface, the second chamfered surface, and the second surface of the substrate. The first driving pad has a flat portion connected to the side wiring.

A display device includes a substrate, a plurality of electrode pads including a first electrode pad and a common electrode pad on the substrate, a light emitting element including a first contact electrode on the first electrode pad and a second contact electrode on the common electrode pad, a conductive adhesive member including a plurality of conductive balls connecting the first electrode pad and the first contact electrode and connecting the common electrode pad and the second contact electrode, and a plurality of protrusions on the substrate and protruding in a thickness direction of the substrate. First protrusions from among the plurality of protrusions overlap the electrode pads in the thickness direction of the substrate.

A display device includes a substrate including a first surface, a second surface opposite to the first surface, a first chamfered surface extending from one side of the first surface, a second chamfered surface extending from one side of the second surface, and a side surface connecting the first chamfered surface to the second chamfered surface, a pixel on the first surface of the substrate and including a light emitting element to emit light, a plurality of front pad parts on an edge of the first surface of the substrate and electrically connected to the pixel, a plurality of rear pad parts on an edge of the second surface of the substrate, and a plurality of side surface connection lines on the side surface of the substrate electrically connecting the plurality of front pad parts to the plurality of rear pad parts.

A display device, and a tile-shaped display device including the same are provided. The display device includes a transistor array layer on a first surface of a substrate, and a plurality of light emitting elements on the transistor array layer. The transistor array layer includes a plurality of pixel drivers and two or more gate drivers in a circuit area of a display area, a first gate voltage supply line around the circuit area, and two or more first gate voltage auxiliary lines connected between the first gate voltage supply line and each of the two or more gate drivers. One end of each of the two or more first gate voltage auxiliary lines is spaced from an edge of the substrate adjacent to the first gate voltage supply line than the first gate voltage supply line.

A display device includes: a substrate; a plurality of pixel columns on the substrate, each of the plurality of pixel columns including a plurality of pixel groups each including a first pixel and a second pixel arranged along a first direction; and a bank enclosing a perimeter of each of the plurality of pixel groups, the bank including a first opening corresponding to each of the plurality of pixel groups, and a second opening located between two pixel groups adjacent to each other in the first direction among the plurality of pixel groups.