A display apparatus includes: a base substrate including a display area and a non-display area adjacent to the display area; a first power supply wire in the non-display area, a first power supply voltage being applied to the first power supply wire; a second power supply wire in the non-display area and spaced apart from the first power supply wire, a second power supply voltage being applied to the second power supply wire; and a dam overlapping the first power supply wire and the second power supply wire, having a first height on the first power supply wire, and having a second height greater than the first height between the first power supply wire and the second power supply wire.

An organic light-emitting device (OLED) includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode and including an electron-transporting host and a hole-transporting host, a hole transport region between the first electrode and the emission layer and including a hole transport layer, and an electron transport region between the emission layer and the second electrode and including an electron transport layer, wherein the OLED satisfies Equations 1 and 2 below:
0.75 eV≤|LUMO.sub.H(ET)−LUMO.sub.H(HT)|≤0.90 eV  <Equation 1>
|E(S.sub.1,H(ET))−E(S.sub.1,H(HT))|<0.15 eV  <Equation 2> wherein in Equations 1 and 2, LUMO.sub.H(ET) refers to a lowest unoccupied molecular orbital (LUMO) energy level of the electron-transporting host, LUMO.sub.H(HT) refers to an LUMO energy level of the hole-transporting host, E(S.sub.1, H(ET)) refers to a singlet energy level of the electron-transporting host, and E(S.sub.1, H(HT)) refers to a singlet energy level of the hole-transporting host.

A display apparatus includes: a base substrate; a thin film transistor and a power supply wire on the base substrate; a first electrode on the base substrate, and electrically connected to the thin film transistor; a light emitting layer and a common layer on the first electrode; and a second electrode on the common layer. The power supply wire includes: a first conductive layer; a second conductive layer on the first conductive layer; and a third conductive layer on the second conductive layer. The third conductive layer protrudes more than the second conductive layer on a side surface of the power supply wire, and the second electrode contacts a side surface of the second conductive layer.

This invention discloses oligosilane compounds. These compounds can be used in OLEDs.

Disclosed are a compound for an organic optoelectronic device represented by Chemical Formula 1, a composition for an organic optoelectronic device, an organic optoelectronic device including the same, and a display device. Details of Chemical Formula 1 are the same as defined in the specification.

Provided are a condensed cyclic compound and an organic light-emitting device including the same. The organic light-emitting device may include a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode. The organic layer may include the condensed cyclic compound represented by Formula 1: ##STR00001## In Formula 1, rings A.sub.1, A.sub.2, and A.sub.3 may each be independently a C.sub.5-C.sub.60 carbocyclic group or a C.sub.2-C.sub.30 heterocyclic group, and n1 to n3 may each be independently 0 or 1, provided that the sum of n1, n2, and n3 is 1. In addition, the descriptions of X.sub.1, L.sub.1 to L.sub.9, a1 to a9, Ar.sub.1 to Ar.sub.6, b1 to b6, R.sub.1 to R.sub.3, and c1 to c3 are as defined in the present specification.

An electroluminescent device, a method for fabricating the same, a display panel, and a display device are disclosed. The electroluminescent device includes a hole inject layer, a hole transport layer, an electron transport layer, and an electron inject layer. At least one of the hole inject layer, the hole transport layer, the electron transport layer, and electron inject layer is a target film including a small molecular layer and a large molecular layer which are arranged in a stacked manner.

An electroluminescent device, a method for fabricating the same, a display panel, and a display device are disclosed. The electroluminescent device includes a hole inject layer, a hole transport layer, an electron transport layer, and an electron inject layer. At least one of the hole inject layer, the hole transport layer, the electron transport layer, and electron inject layer is a target film including a small molecular layer and a large molecular layer which are arranged in a stacked manner.

The present specification relates to an organic light emitting device comprising a first electrode, a second electrode, and an organic material layer comprising one or more layers provided between the first electrode and the second electrode, wherein the one or more layers of the organic material layer comprise a heterocyclic compound represented by Chemical Formula 1 and a heterocyclic compound represented by Chemical Formula 2, a composition for the organic material layer of the organic light emitting device, and a method for manufacturing the organic light emitting device.

The present specification relates to an organic light emitting device comprising a first electrode, a second electrode, and an organic material layer comprising one or more layers provided between the first electrode and the second electrode, wherein the one or more layers of the organic material layer comprise a heterocyclic compound represented by Chemical Formula 1 and a heterocyclic compound represented by Chemical Formula 2, a composition for the organic material layer of the organic light emitting device, and a method for manufacturing the organic light emitting device.