Abstract: Provided are a heterocyclic compound represented by Formula 1 below and an organic electroluminescent device including an organic layer comprising the heterocyclic compound: wherein Ar1, Ar2, Ar3, R1, and R2 are the same as defined in the detailed description. The heterocyclic compound represented by Formula 1 has excellent electrical characteristics and an excellent charge transporting capability, and thus the heterocyclic compound of Formula 1 can be used as a hole injecting material, a hole transporting material, and/or a light emitting material that are suitable for all-color fluorescent and phosphorescent organic light emitting devices such as red, green, blue, and white fluorescent and phosphorescent organic light emitting devices. In addition, the organic electroluminescent device including an organic layer comprising the heterocyclic compound represented by Formula 1 can have a high efficiency, a low driving voltage, and high luminosity.

Abstract: Provided are a compound represented by Formula 1 or 2 below and an organic light emitting device including an organic layer having the compound: where Ar1, Ar2, Ar3, R1, R2 and R3 are as described in the detailed description. Since the compound represented by Formula 1 or 2 has excellent electrical properties and excellent charge transport capabilities, the compound can be efficiently used as a hole injecting material, a hole transporting material, and/or an emitting material which is suitable for a fluorescent or phosphorescent organic light emitting device which can realize all colors such as red, green, blue, and white. Thus, an OLED including the compound can have high efficiency, high current density, low driving voltage, excellent brightness, and long lifetime.

Abstract: The invention is directed to an amine-based compound represented by Formula 1, an organic light emitting device with an organic film including the same, and a flat panel display device including the organic light emitting device.

Abstract: Provided are a silanylamine-based compound of Formula 1 and an organic light emitting diode including an organic layer having the same: wherein R1, R2, R3, R4, R5, R6, R7, R8, Ar1, Ar2, X and X? are described herein. Embodiments of the silanylamine-based compound of Formula 1 exhibit superior electrical properties and high charge-transport properties, and can be efficiently used as hole injecting materials, hole transporting materials, and/or emitting materials suitable for phosphorescent and fluorescent organic light emitting diodes emitting light of all colors, including red, green, blue, and white. Furthermore, an organic light emitting diode having the silanylamine-based compound of Formula 1 can have high efficiency, low driving voltage, and high brightness.

Abstract: A compound for use in an organic light emitting device is represented by The compound has excellent electrical properties and charge transporting characteristics, and is therefore useful as a material for a hole injection layer, a hole transport layer, and an emission layer of phosphorescent and fluorescent devices for emitting light of all colors, including red, green, blue, and white. Organic light emitting devices using the compounds have high efficiency, low driving voltages, and high brightness.