Disclosed herein is an organic light-emitting diode capable of operating at a low voltage with high efficiency. It comprises: a first electrode; a second electrode facing the first electrode; and a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer comprises at least one of the amine compounds represented by the following Chemical Formula A or B, and the compound represented by the following Chemical Formula C. Chemical Formulas A, B and C are as described in the Specification.

The present specification relates to a color conversion film comprising a color conversion functional layer including a microcapsule phase change material, and a backlight unit and a display apparatus including the same.

The present invention relates to the following polycyclic aromatic derivative organic light emitting compound, and an organic light emitting device employing same as a dopant compound of a device light emitting layer. The organic light emitting device according to the present invention comprises a polycyclic aromatic derivative compound as a dopant compound in a light emitting layer, and also, at the same time, employs, alongside the dopant compound, an anthracene derivative compound having a characteristic structure in the light emitting layer by combining same as a host. Accordingly, the organic light emitting device according to the present invention has excellent color purity, high luminous efficiency, and a remarkably improved long life, and thus can be usefully used in various display devices.

Provided herein are processes for preparing fluorescent 1-cyano-2-substituted isoindole compounds or N-substituted phthalazinium compounds, comprising reacting an aromatic dialdehyde or aromatic aldehyde-ketone compound with a material that contains primary amino or hydrazine groups, and assaying methods involving the processes thereof.

Nitrogen-containing cyclic compounds for color conversion film, and a color conversion film, a backlight unit and a display apparatus including the compound(s).

A thermally activated delayed fluorescent (TADF) deep-red light polymer material is provided, and includes a main chain to polymerize a TADF molecular structure, and a side chain to connect with an alkyl chain. The TADF polymer material of this structure has excellent TADF characteristics and solubility. Further, the material can be used to fabricate an electroluminescent device by a solution processing, and a good device effect can be obtained.

An organic electroluminescence device, comprising a cathode, an anode, and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and one or more selected from the group consisting of the compound represented by the formula (1) and the compound represented by the formula (2) have at least one deuterium atom.

##STR00001##

An organic compound is represented by general formula (1) below: ##STR00001## where X.sub.1 and X.sub.2 are each independently selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group; R.sub.11 to R.sub.16 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a heterocyclic group, and a halogen atom; R.sub.21 and R.sub.22 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, and an aralkyl group; and A.sub.1.sup.− and A.sub.2.sup.− each independently represent a monovalent anion.

A condensed cyclic compound represented by Formula 1: ##STR00001## wherein in Formula 1, Ar.sub.1 and R.sub.1 to R.sub.8 are the same as described in the specification.

An organic light emitting diode having a substrate, a first electrode, a hole transporting layer proximate the first electrode, a second electrode, an electron transporting layer proximate the second electrode, and an emissive layer between the hole transporting layer and the electron transporting layer. The emissive layer includes a square planar tetradentate platinum or palladium complex, and excimers formed by two or more of the complexes are aligned such that emitting dipoles of the excimers are substantially parallel to a surface of the substrate.