The present invention provides a heterocyclic compound and an organic light-emitting device including the heterocyclic compound. The organic light-emitting devices using the heterocyclic compounds have high-efficiency, low driving voltage, high luminance and long lifespan.

Organic light-emitting device

The present invention relates to novel organic electroluminescent compounds exhibiting high luminous efficiency, and organic electroluminescent devices comprising the same. The organic electroluminescent compounds according to the invention are represented by Chemical Formula (1):

Novel organic electroluminescent compounds and organic electroluminescent device using the same

The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which contain these compounds.

Materials for organic electroluminescent devices

An organic electroluminescence element is comprised of a laminate of an anode, a light emitting layer made of an organic compound including phosphorescent materials, an electron transport layer made of an organic compound, and a cathode In the electroluminescence element, a hole blocking layer made of a specific aluminium chelate complex is laminated between the light emitting layer and the electron transport layer.

Organic electroluminescence element

Provided is an organic electroluminescence device having high luminous efficiency, high heat resistance and an extremely long lifetime. The organic electroluminescence device of the present invention includes an organic thin film layer composed of one or more layers containing at least a light emitting layer is interposed between a cathode and an anode. The light emitting layer includes a compound containing a condensed ring and a luminescent metal complex capable of emitting light having a red-based color. It is preferable that the compound containing a condensed ring includes a host material, while the luminescent metal complex capable of emitting light having a red-based color includes a phosphorescent dopant.

Organic Electroluminescent Device

PROBLEM TO BE SOLVED: To improve luminous efficiency as well as brightness, and extend service life by applying the constitution that a cyclic organic compound is contained in the hole injection layer or the luminous layer of an organic electroluminescent element having a plurality of layers of organic compound thin films, containing at least a luminous layer and a hole injection layer between a pair of electrodes. SOLUTION: A cyclic organic compound is expressed by the formula, and composed, for example, by the use of a naphthoquinone derivative, a Grignard's reagent and a lithiation reagent or diaryl benzoflane. Preferably, a hole injection layer is doped into an area formed with an anode, or the compound expressed by the formula is doped into the host substance of a luminous layer having an electron injection layer in an area formed with a cathode. As a result, carriers injected from the cathode are evenly recombined within the luminous layer. In the formula, (x) represents a halogen atom, a cyano group, an alkyl group, an aryl group, an alcoxy group, an aryloxy group, an alkylthio group, a cycloalkyl group, a heterocyclic group and an amino group, and (i) represents an integer between 1 and 28. COPYRIGHT: (C)1998,JPO

Organic electroluminescent element material and organic electroluminescent element using the same

PROBLEM TO BE SOLVED: To improve the luminous intensity, luminous efficiency, and stability in repeated use by reacting a dihalide of a specified divalent residue, a secondary amine derivative, potassium carbonate and a catalyst in a solvent. SOLUTION: A dihalide of a divalent residue represented by A in formula I is reacted with a secondary amine derivative having a structure wherein the N-A bond of formula I is substituted by H, potassium carbonate and a catalyst in a solvent to give a luminescent material for an organic electroluminescent element, represented by formula I [wherein A is, e.g. an (un)substituted aromatic group, an (un)substituted condensed aromatic group [except for groups of formula II (wherein E is H, or adjacent E's may be combined to form a new six-membered aromatic ring)], or a divalent group linked through at least one nonaromatic structural unit (except for the case of formula III); Ar 1 to Ar 4 are each an (un)substituted aromatic group, or an (un)substituted condensed aromatic group; x 1 to x 4 are each -O-, -S-, >C=O, etc.; and R 1 to R 20 are each H, halogeno, an (un)substituted alkyl, an (un)substituted alkoxy, etc.]. COPYRIGHT: (C)1998,JPO

Luminescent material for organic electroluminescent element and organic electroluminescent element produced by using the same

PROBLEM TO BE SOLVED: To provide a positive hole injection material which has great positive hole injection ability, and durability, especially high-temperature-resistance, by using an organic electro-luminescence element material having a 9-phenantolyl group as a luminescent material. SOLUTION: As a luminescent material, an organic electro-luminescence element material represented by formula I is used. In the formula I, Ar -Ar show substituted or un-substituted aryl groups, and at least one is a substituted or un-substituted 9-phenantolyl group represented by formula II. In the formula II, R -R show hydrogen atoms, halogen atoms, and substituted or un-substituted alkoxyl groups, respectively and independently. Adjacent substituted groups of the R -R can combine with each other and form new saturation rings or aromatic rings. In addition, as the luminescent material, an organic electro-luminescence element material represented by formula III can be used. In the formula III, R -R show hydrogen atoms, halogen atoms, substituted or un-substituted alkyl groups, and alkoxyl groups, respectively and independently.

Organic electroluminescent element material and organic electroluminescent element using it

PROBLEM TO BE SOLVED: To provide a material for organic electroluminescent devices having high photogenic luminance and high luminous efficiency and excellent in stability in repeated use and the electroluminescent device using the material. SOLUTION: The material for organic electroluminescent devices comprises (A) a condensed heterocyclic compound in which same or different two or more nitrogen-containing rings are condensed directly or through other carbon ring or heterocyclic ring and (B) a phosphorescence luminescent material. The compound A is e.g. a compound represented by general formula [1] or [2] (wherein X 1 and X 2 are each O or the like; R 1 and R 2 are each an aryl group or the like). COPYRIGHT: (C)2005,JPO&NCIPI

Material for organic electroluminescent device and organic electroluminescent device using the same

A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula [1],

Toshio Enokida

Papers

Organic electroluminescent element material and organic electroluminescent element using the same

Luminescent material for organic electroluminescent element and organic electroluminescent element produced by using the same

Organic electroluminescent element material and organic electroluminescent element using it

Material for organic electroluminescent device and organic electroluminescent device using the same

Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied