Abstract: A light emitting polymer includes a phosphorescence unit and a fluorescence unit. An organic light emitting device includes the light emitting polymer. The light emitting polymer can emit light of two or more colors according to a phosphorescent and fluorescent mechanisms, and thus the organic light emitting device including the light emitting polymer can have long lifetime, high brightness and excellent efficiency, and emit white light.

Abstract: Provided are an organic light emitting compound represented by Formula 1 below, an organic light emitting device comprising the same, and a method of manufacturing the organic light emitting device: where CY1 and CY2 are each independently a fused C6-C50 aromatic ring, Ar1 is a substituted or unsubstituted C6-C50 arylene group, Ar2, Ar3, Ar4, and Ar5 are each independently a substituted or unsubstituted C6-C50 aryl group, m and n are independently 0-3, and R1 and R2 are substituent groups. An organic light emitting device comprising the organic light emitting compound has low turn-on voltage, high efficiency, high color purity and high luminance.

Abstract: Provided are an organic light emitting compound represented by Formula 1 below, an organic light emitting device comprising the same, and a method of manufacturing the light emitting device: wherein CY1, CY2, Ar1, R1 and R2 are described in the detailed description of the invention. An organic light emitting device comprising the organic light emitting compound has low turn-on voltage, high efficiency, high color purity and high luminance.

Abstract: Provided are a compound represented by Formula 1 below and an organic light-emitting device including the same: wherein X is a C, Si, or Ge atom disubstituted with H or C1-60 organic groups, Ra-Rj are C1-60 organic groups, CY1 is a substituted or unsubstituted C5-C60 aromatic ring or a substituted or unsubstituted C2-C60 heteroaromatic ring, and n is 0 or 1. The use of the compound provides an organic light-emitting device having a low operating voltage and good efficiency and brightness.

Abstract: An Organic Light Emitting Display (OLED) and a method of manufacturing the OLED includes: a first electrode arranged on a substrate; a Hole Transporting Layer (HTL) arranged on the first electrode; a light Emitting Layer (EL) arranged on the HTL; an Electron Transporting Layer (ETL) arranged on the light EL; and a second electrode arranged on the ETL; the light EL includes a soluble hole transporting host, a soluble electron transporting host, and a soluble light emitting dopant; a difference of a Highest Occupied Molecular Orbital (HOMO) level between the HTL and the hole transporting host respectively and the light emitting dopant is 1 eV or less; a difference of a HOMO level between the HTL and the hole transporting host respectively and the electron transporting host is 0.

Abstract: A method for treating a polymeric optical element which includes the steps of mounting a polymeric optical element into a chamber, injecting a compressed gas as an annealing medium into the chamber and annealing the polymeric optical element and removing the annealing medium from the chamber. The present method provides a new way of preventing disadvantageous molecular orientation and residual stress which causes a deterioration in the optical properties of the polymeric optical element.

Abstract: Provided are an organic light-emitting compound that is a diarylethene derivative represented by Formula 1, and an organic electroluminescent (EL) device using the organic light-emitting compound, and a method of manufacturing the organic EL device: where R1, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, k, l, m, and n are the same as defined in the specification. The organic light-emitting compound contains a cis-diarylethene group linked with an aliphatic ring, and thus crystallization of the organic light-emitting compound is unlikely to occur and the compound is highly soluble to organic solvents and easily provides liquid formulation with organic solvents. Thus, the organic light-emitting compound can easily be used in organic EL devices. An organic EL device manufactured using the compound can have a thermostable layer and thus has improved light-emitting properties in term of superior turn-on voltage, efficiency, color purity, etc.

Abstract: An organic light emitting device has a structure in which the penetration of harmful materials into an inner functional layer is blocked to prevent the degradation of the performance of the organic light emitting device and an organic electronic device includes such an organic light emitting device.

Abstract: Provided is a cyclometalated transition metal complex represented by Formula 1, Formula 2 or Formula 3: By including a new ancillary ligand, the cyclometalated transition metal complex can efficiently emit red light using a phosphor by intersystem crossing (ISC) of excitons to triplet states and then metal to ligand charge transfer (MLCT). An organic light emitting device prepared using the transition metal compound shows high luminous efficiency and high external quantum efficiency.

Abstract: A compound represented by Formula 1 and an organic light emitting device including the same: where Ar is a substituted or unsubstituted C6-C26 aryl group; X is O, S, R1 and R2 are hydrogen, a halogen, a C1-C12 alkyl group, a C6-C26 aryl group, or a substituted group thereof; R3, R4, R5, R6, R7 and R8 are each independently hydrogen or a substituted or unsubstituted C1-C12 alkyl group; R9 through R22 are each independently hydrogen, a C1-C30 alkyl group, a C1-C30 alkoxy group, a C6-C30 aryl group, a C6-C30 arylalkyl group, a C6-C30 aryloxy group, a C5-C30 heteroaryl group, a C5-C30 heteroarylalkyl group, a C5-C30 heteroaryloxy group, a C5-C20 cycloalkyl group, a C5-C30 heterocycloalkyl group, or a substituted group thereof. An organic light emitting device using the compound has low operating voltage, high color purity, and high efficiency.

Abstract: Provided are an electroluminescent polymer including repeating units of Formula (1) below and repeating units of Formula (2) below and an organic electroluminescent device including an organic layer having the electroluminescent polymer, wherein the organic electroluminescent device has high luminance, high efficiency, and high color purity: where Ar, X, Y, and R are the same as described in the detailed description of the invention and the claims.

Abstract: A method of manufacturing an organic light emitting device, whereby a first electrode is formed on a substrate, at least one organic thin film is formed on the first electrode, the organic thin film is optically treated, and a second electrode is formed on the organic thin film. The method can provide an organic light emitting device with an organic thin film having a stable surface morphology and increased durability.

Abstract: A method of manufacturing a donor film for an organic light-emitting device (OLED) and a method of manufacturing an OLED having the donor film are provided. The method of manufacturing the donor film for an organic light-emitting device including preparing a base film, and forming an organic luminescence layer pattern by a dispensing method in which a fluid organic material is ejected on the base film through a dispenser needle. The method of manufacturing an organic light-emitting device by the use of the donor film including preparing a first electrode pattern on a substrate, preparing a donor film having an organic luminescence layer pattern that matches the first electrode pattern, transferring the organic luminescence layer pattern of the donor film to the substrate to form a organic luminescence layer pattern on the first electrode pattern, and forming a second electrode on the organic luminescence layer formed on the first electrode pattern.

Abstract: Provided are a blue electroluminescent (EL) polymer, a method of manufacturing the same, and an organic EL device including the polymer as a light emitting component, wherein an acridine derivative which can transport holes is introduced into a polymer backbone. The polymer is represented by Formula 1: The blue EL polymer has high color purity and color stability.

Abstract: A method for forming a pattern of an organic insulating film by forming an electrode on a substrate, coating an imprintable composition thereon to form an organic insulating film, pressurizing and curing the organic insulating film using a patterned mold to transfer a pattern of the mold to the organic insulating film, and etching a portion of the organic insulating film remaining on the electrode. Since a pattern of an organic insulating film can be formed by simple molding without the use of a photoresist, the overall procedure is simplified and eventually an organic thin film transistor with high charge carrier mobility can be fabricated by all wet processes.

Abstract: Provided are an organic light-emitting compound of Formula 1 and an organic light-emitting device using the organic light-emitting compound: where Ar, R1, R2, R3, R4, and R5 are the same as defined in the detailed description. The organic light-emitting device manufactured using the organic light-emitting compound has a low turn-on voltage and high efficiency and color purity.

Abstract: An organic light-emitting device including a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode. The organic layer includes at least one organosiloxane compound selected from organosiloxane compounds represented by An organic light-emitting device using the organosiloxane compound has a low operating voltage, high color purity, and high efficiency.

Abstract: A dimethylenecyclohexane compound represented by formula 1, a method of preparing the same, and an organic light emitting device using the dimethylenecyclohexane are provided. The dimethylenecyclohexane compound can improve the driving voltage, efficiency and color purity of the organic light emitting device.

Abstract: Silyl-substituted cyclometalated transition metal complexes have good thermal stability and enabling highly efficient phospholuminescence and an organic electroluminescent device may use the Silyl-substituted cyclometalated transition metal complexes. The transition metal complexes, which are suitably used for forming an organic layer of the organic electroluminescent device, can emit light in the wavelength range of 400-650 nm, and induce white electroluminescence when combined with green or red luminescent materials.

Abstract: A method for treating a polymeric optical element which includes the steps of mounting a polymeric optical element into a chamber, injecting a compressed gas as an annealing medium into the chamber and annealing the polymeric optical element and removing the annealing medium from the chamber. The present method provides a new way of preventing disadvantageous molecular orientation and residual stress which causes a deterioration in the optical properties of the polymeric optical element.