Abstract: An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode and including an emission layer; an electron transport region disposed between the second electrode and the emission layer; a mixed layer disposed between the emission layer and the electron transport region and including a first material and a second material; wherein the first material and the second material are pyrrolidine-based compounds; and triplet energy EgT1 of at least one selected from the first material and the second material is 2.2 eV or greater.

Abstract: An OLED and a flat panel display, the OLED including an anode; a cathode; and an organic, the organic layer including an EML, the EML including first and second hosts, a hole transport region between the anode and the EML and including at least one of a hole injection layer (HIL), a hole transport layer (HTL), a buffer layer, or an electron blocking layer (EBL), an electron transport region between the EML and the cathode, the electron transport region including at least one of a hole blocking layer (HBL), an electron transport layer (ETL), or an electron injection layer (EIL), and an intermediate layer between the EML and the electron transport region; wherein an electron affinity of a compound of the intermediate layer [EAintermediate layer] and an electron affinity of the first host [EAhost1] satisfy a relationship represented by the following expression: EAintermediate layer?EAhost1+0.3 eV.

Abstract: An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layers and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (ET1) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (ET2) of a dopant of the emission layer satisfy the following relationship: ET1>ET2.

Abstract: An organic light-emitting device and a flat panel display, the device including an anode; a cathode; and an organic layer therebetween, the organic layer including an EML, the EML including a first host and a second host that are different from one another, a hole transport region between the anode and the EML, the hole transport region including at least one of a hole injection layer (HIL), a hole transport layer (HTL), a butler layer, or an electron blocking layer (EBL), an electron transport region between the EML and the cathode, the electron transport region including at least one of a hole blocking layer (HBL), an electron transport layer (ETL), or an electron injection layer (EIL), and an intermediate layer between the EML and the electron transport region; wherein the intermediate layer includes a compound having an electron affinity of more than 0 eV and less than 2.5 eV.

Abstract: An organic light-emitting device includes a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and including an emission layer.

Abstract: Provided is a flexible display apparatus having an improved light extracting efficiency and a method of manufacturing the flexible display apparatus. The flexible display apparatus includes a flexible substrate having a rippled surface, a pixel electrode on the flexible substrate and having a rippled surface, an intermediate layer on the pixel electrode and including a light emission layer, and an opposing electrode facing the pixel electrode. A method of manufacturing the flexible display apparatus includes applying a tensile force to a flexible substrate, forming a pixel electrode on the flexible substrate, removing the tensile force applied to the flexible substrate to form a rippled surface in the pixel electrode, forming an intermediate layer including an light emission layer on the pixel electrode, and forming an opposing electrode facing the pixel electrode.

Abstract: An organic light-emitting device includes a positive electrode, a negative electrode and at least one organic material layer between the positive electrode and the negative electrode. The at least one organic material layer includes a hole-injecting layer, a hole-transporting layer, an emission layer, an electron-transporting layer, and an electron-injecting layer, and the emission layer includes a host material and a dopant material. In addition, a lifetime enhancement layer including a bipolar compound is positioned between the emission layer and the electron-transporting layer.

Abstract: An organic light-emitting device includes a substrate; a first electrode layer and a second electrode layer on the substrate, in parallel to the substrate, and facing each other; an emission layer between the first electrode layer and the second electrode layer, where the emission layer includes a first emission region, a second emission region, and a third emission region, where the emission layer includes a first common emission layer in the first emission region, the second emission region, and the third emission region; a second emission layer in the second emission region between the first common emission layer and the second electrode layer; and a third emission layer in the third emission region between the first common emission layer and the second electrode layer, and where the first common emission layer includes a first host, a first dopant, and a p-type dopant.

Abstract: An organometallic complex represented by Formula 1 below and an organic light-emitting device including the same: Formula 1 is as defined in the specification.

Abstract: A heterocyclic compound represented by Formula 1 and an organic light-emitting diode including the same:

Abstract: An organic light-emitting device includes an emission layer and an electron transport layer. The emission layer includes at least one compound represented one of Formula 1, Formula 2 and/or Formula 3. The electron transport layer includes at least one compound represented by Formula 4 and/or Formula 5. An organic light-emitting device including the emission layer and the electron transport layer has high emission efficiency and an improved lifetime.

Abstract: Disclosed is an organic light emitting diode device including an anode and a cathode facing each other, an emission layer interposed between the anode and the cathode, and a first hole auxiliary layer interposed between the anode and the emission layer. The first hole auxiliary layer has a higher triplet energy (T1) than the emission layer.

Abstract: An organic light-emitting diode including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a host and a dopant; a first hole transport layer between the first electrode and the emission layer; and a second hole transport layer between the first hole transport layer and the emission layer, wherein the first hole transport layer includes a first carbazole-based compound and a p-dopant, the second hole transport layer includes a second carbazole-based compound and does not comprise the p-dopant, the host of the emission layer includes a third carbazole-based compound, the dopant of the emission layer includes a phosphorescent metal complex, and the first carbazole-based compound, the second carbazole-based compound, and the third carbazole-based compound are all different from each other.

Abstract: In an aspect, an organic compound and an organic light-emitting diode (OLED) including the same are provided.

Abstract: An indole-based compound represented by Formula 1 below, and an organic light-emitting diode including the indole-based compound are provided. In Formula 1, Ar1, R1 to R8, and n are the same as defined in the specification. The organic light-emitting diode with an organic layer including the indole-based compound of Formula 1 may have a low driving voltage, a high-emission efficiency, and long lifespan characteristics.

Abstract: A pyrene-based compound and an organic light-emitting diode including the same, the pyrene-based compound being represented by Formula 1, below:

Abstract: A condensed cyclic compound represented by Formula 1 below and an organic light-emitting device (OLED) including the condensed cyclic compound are presented. Ar1 and Ar2 in Formula 1 are each independently one of a hydrogen atom, an aryl or heteroaryl group and an arylamino group, at least one of Ar1 and Ar2 being a substituted or unsubstituted 1,2.4-triazol-4-yl group; L1 and L2 in Formula 1 are linking groups, each independently one of a cyclic or noncyclic, saturated or unsaturated hydrocarbon group and a heteroarylene group; a and b in Formula 1 are each independently one of 0 or 1; and R1 to R8 in Formula 1 being each independently one of a variety of inorganic and organic substituents including cyclic or noncyclic, saturated or unsaturated and aromatic, nonaromatic or heteraromatic groups. The OLED may have a low driving voltage, a high emission efficiency and long lifespan characteristics.

Abstract: A carbazole-based compound is represented by Formula 1 and may be used in the organic layer of an organic light-emitting diode. An organic light-emitting diode includes a first electrode, a second electrode, and an organic layer between the first and second electrodes. The organic layer includes an emission layer, and the carbazole-based compound of Formula 1 may be included in the emission.

Abstract: A pyrene-based compound and an organic light-emitting diode including the pyrene-based compound are provided. The pyrene-based compound of Formula 1 above may emit blue light having high color purity. For example, an organic light-emitting diode including the pyrene-based compounds of the invention may emit blue light having a y coordinate with a color purity of 0.1 or less, for example, a color purity of 0.09 or less, which is near to the NTSC or sRGB specification. A thin film including the pyrene-based compounds of the invention may be highly amorphous, and thus may have improved electrical stability. Accordingly, an organic light-emitting diode including the pyrene-based compounds of the invention may have improved lifetime characteristics.

Abstract: A pyrene-based compound, an organic light-emitting diode including the compound and an organic light-emitting apparatus including the compound are disclosed.