A solar cell includes a first substrate, a first electrode layer, a first electron transport layer, a first photoelectric conversion layer, a first hole transport layer, a second electrode layer, a third electrode layer, a second electron transport layer, a second photoelectric conversion layer, a second hole transport layer, a fourth electrode layer, and a second substrate that are disposed in the order stated. The first photoelectric conversion layer includes a first perovskite compound, and the second photoelectric conversion layer includes a second perovskite compound. The first perovskite compound has a bandgap greater than a bandgap of the second perovskite compound.

A light emitting diode (LED) pixel for a display including a first LED stack having a first well layer, a second LED stack disposed on the first LED stack and having a second well layer, a third LED stack disposed on the second LED stack and having a third well layer, a first electrode disposed on the first LED stack and in ohmic contact with the first LED stack, a second electrode disposed on the second LED stack and in ohmic contact with a surface of the second LED stack, and a third electrode in ohmic contact with a surface of the third LED stack, in which the first well layer includes at least one base material different from that of the second well layer.

A multi-panel organic light emitting display device is disclosed that includes a plurality of display panels coupled to each other. Each of the plurality of display panels includes: a substrate including an active area and a non-active area; and a display unit including an organic light emitting element on the substrate. Each of the plurality of display panels also includes: a plurality of signal lines disposed on the substrate and electrically connected to the display unit; and a plurality of link lines disposed under the substrate. Each of the plurality of display panels further includes a plurality of side lines connecting the plurality of signal lines and the plurality of link lines. Each of the plurality of display panels also includes a driving circuit electrically connected to the plurality of link lines.

Provided are an organic electronic element and an electronic device thereof, the organic electronic element being capable of achieving high light-emitting efficiency and a low driving voltage, and can also greatly improve the lifespan of the element by using a compound of the present invention as a phosphorescent host material.

A display device includes: a base substrate including an active area, and a nonactive area including a crack dam arrangement area; a plurality of inorganic layers on the base substrate; and an encapsulation layer on the plurality of inorganic layers, and including an encapsulation inorganic layer, and an encapsulation organic layer on the encapsulation inorganic layer. The base substrate includes first substrate portions having a first thickness at the crack dam arrangement area, and a second substrate portion between adjacent ones of the first substrate portions and connected to the first substrate portions, the second substrate portion having a second thickness smaller than the first thickness. The plurality of inorganic layers are laminated to form an inorganic laminated film at the crack dam arrangement area; and the encapsulation inorganic layer is located over the first substrate portions and the second substrate portion, and includes at least one short circuit portion.

A display device includes a display part including a first non-folding area, a second non-folding area, and a folding area between the first non-folding area and the second non-folding area, the folding area being foldable with respect to a folding axis, a window disposed on the display part, and an adhesive layer disposed between the display part and the window, the adhesive layer including a first adhesive material and a second adhesive material having an elongation rate greater than an elongation rate of the first adhesive material. The first adhesive material has a planar area greater than a planar area of the second adhesive material in each of the first non-folding area and the second non-folding area, and the second adhesive material has a planar area greater than a planar area of the first adhesive material in the folding area.

A composition is disclosed that includes a first compound capable of functioning as a host in an emissive layer of an OLED at room temperature; and a second compound that includes a ligand L.sub.A of Formula III ##STR00001##
where ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; where R represents two adjacent substituents that are joined together to form a ring that is fused to ring B, and R has a structure of Formula IV ##STR00002##
or Formula V ##STR00003##
disclosed herein.

A display device includes: a light-emitting element at a display area; a driving element electrically connected to the light-emitting element; an encapsulation layer covering the light-emitting element; a touch sensor on the encapsulation layer; a connection pad at a bonding area, the connection pad including a lower conductive layer, an intermediate conductive layer on the lower conductive layer, and an upper conductive layer on the intermediate conductive layer; a cladding layer covering at least a side surface of the intermediate conductive layer and including an organic material; a passivation layer covering an upper surface of the cladding layer and including an inorganic material, a portion of the passivation layer being located under the upper conductive layer; and a driving circuit attached to the connection pad.

A method of fabricating the organic-inorganic hybrid coating layer includes: preparing a gel mixture including an organic precursor and colloidal silica particles; preparing a first mixed solution by heating the gel mixture; preparing a second mixed solution by adding quantum dots to the first mixed solution; and coating the second mixed solution on a substrate and irradiating light thereon to form a polymer matrix in which the organic precursor and the colloidal silica particles are crosslinked, and preparing a coating layer in which the quantum dots are dispersed in the polymer matrix, wherein the organic precursor may include at least one of dipentaerythritol pentaacrylate (DPPA) or dipentaerythritol hexaacrylate (DPHA).

A method of manufacturing a display apparatus includes discharging liquid droplets in a first area of a substrate, moving a discharge part by a first distance along a side of the substrate and discharging the liquid droplets in a second area of the substrate, and moving the discharge part by a second distance along the side of the substrate and discharging the liquid droplets in a third area of the substrate. The first distance is different from the second distance.