Abstract: Embodiments provide a display device that includes a substrate, a transistor disposed on the substrate, and a light emitting device that is electrically connected to the transistor. The light emitting device includes a first electrode that is electrically connected to the transistor, a second electrode disposed on the first electrode, a light emitting layer disposed between the first electrode and the second electrode, a hole transport layer disposed between the first electrode and the light emitting layer, and an electron blocking layer disposed between the hole transport layer and the light emitting layer. Mobility of the hole transport layer is equal to or less than about 2.0*10?3 cm2/(Vs), and a real part of impedance of the light emitting device is equal to or less than about 100?, in a frequency range of about 105 Hz to about 106 Hz.

Abstract: Provided is an organic light-emitting device including a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes an auxiliary layer, the auxiliary layer including at least one amine-based compound represented by Formula 1: where R11, R12, R13, R14, R15, R16, X11, L11, L12, L13, a11, a12, a13, b15, and b16 are as defined in the specification.

Abstract: An organic light-emitting device includes: a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the second electrode and the emission layer, wherein the hole transport region includes a first compound represented by Formula 1.

Abstract: Provided is an organic light emitting diode that is highly efficient and has a long lifespan. The organic light emitting diode includes a carbazole-based compound for improving light emission efficiency. In certain embodiments an electron transport layer can include an anthraces-based compound. The organic light emitting diode may be included in a flat display diode including a thin film transistor (TFT).

Abstract: An organic light-emitting device and a method of manufacturing the same. The organic light-emitting device includes a substrate, a first electrode formed on the substrate, a second electrode, an emission layer between the first electrode and the second electrode, a hole transport layer between the first electrode and the emission layer, and an electron transport layer between the second electrode and the emission layer. The hole transport layer includes a first hole transport unit comprising: a first hole transport layer comprising a hole transporting material, a third hole transport layer formed on the first hole transport layer and comprising a charge generating material; and a fifth hole transport layer formed on the third hole transport layer and comprising the hole transporting material.

Abstract: An organic light-emitting display device includes a substrate, a plurality of pixel electrodes arranged in a matrix on the substrate, and an organic common layer covering the pixel electrodes. The pixel electrodes include a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes. An n-th pixel column includes the second pixel electrodes; and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column includes the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number. One of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)th pixel column in the same row.

Abstract: An organic light-emitting diode (OLED).

Abstract: An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.

Abstract: An organic light-emitting display device includes a substrate, a plurality of pixel electrodes arranged in a matrix on the substrate, and an organic common layer covering the pixel electrodes. The pixel electrodes include a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes. An n-th pixel column includes the second pixel electrodes; and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column includes the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number. One of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)th pixel column in the same row.

Abstract: An organic light-emitting device including: a substrate; a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and an electron transport layer between the emission layer and the second electrode, wherein the emission layer includes a blue emission layer, the electron transport layer includes a unit that includes a first single layer including a first material, a first mixed layer on the first single layer and including the first material and a second material, a second single layer on the first mixed layer and including the second material, a second mixed layer on the second single layer and including the first and second materials, and a third single layer on the second mixed layer and including the first material, wherein the first mixed layer has a thickness that is larger than that of the second mixed layer.

Abstract: An organic light-emitting device includes: a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the second electrode and the emission layer, wherein the hole transport region includes a first compound represented by Formula 1.

Abstract: Provided is an organic light-emitting device including a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, and a hole transport region between the first electrode and the emission layer, wherein the hole transport region includes an auxiliary layer, the auxiliary layer including at least one amine-based compound represented by Formula 1: where R11, R12, R13, R14, R15, R16, X11, L11, L12, L13, a11, a12, a13, b15, and b16 are as defined in the specification.

Abstract: An organic light-emitting display device includes a substrate, a plurality of pixel electrodes arranged in a matrix on the substrate, and an organic common layer covering the pixel electrodes. The pixel electrodes include a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes. An n-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column includes the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column includes the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number. One of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)-th pixel column in the same row.

Abstract: An organic light-emitting device with an electron transport layer disposed between the organic emission layer and the second electrode and comprising an anthracene-based compound and a carbazole-based compound represented by Formula 1 below: with improved efficiency and lifetime and a method for preparing the same are provided.

Abstract: An organic light-emitting device includes an emission layer between first and second electrodes, a first hole transport layer that is between the emission layer and the first electrode and that includes a first hole transport compound and a first electron acceptor, a second hole transport layer that is between the emission layer and first hole transport layer and that includes a second hole transport compound, a third hole transport layer that is between the emission layer and the second hole transport layer and that includes a third hole transport compound and a second electron acceptor, a fourth hole transport layer that is between the emission layer and the third hole transport layer and that includes a fourth hole transport compound, a buffer layer between the emission layer and the fourth hole transport layer, and an electron transport layer that includes a pyrimidine-based compound.

Abstract: An organic light emitting display includes a substrate; a first pixel electrode disposed on the substrate; a second pixel electrode disposed on the substrate; a hole auxiliary layer disposed on the first pixel electrode and the second pixel electrode; a first organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode; a blue organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode, the blue organic emission layer being further disposed on the first organic emission layer; a non-doping blue organic emission layer disposed on the blue organic emission layer; an electron auxiliary layer disposed on the non-doping blue organic emission layer; and a common electrode disposed on the electron auxiliary layer.

Abstract: An organic light-emitting diode including a film having a thermal evaporation material and metal particles between a first electrode and a substrate and/or on a second electrode.

Abstract: An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.

Abstract: An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.

Abstract: An organic light-emitting device includes a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a compound represented by Formula 2 below, and a second layer including a heterocyclic compound represented by Formula 1 below either between the emission layer and the first electrode or between the emission layer and the second electrode. Formula 1 and Formula 2 are defined in the same manner as described in the detailed description.