Patent Description:
The present specification relates to a heterocyclic compound, and an organic light emitting device including the same.

An organic light emission phenomenon generally refers to a phenomenon converting electrical energy to light energy using an organic material. An organic light emitting device using an organic light emission phenomenon normally has a structure including an anode, a cathode, and an organic material layer therebetween. Herein, the organic material layer is often formed in a multilayer structure formed with different materials in order to increase efficiency and stability of the organic light emitting device, and for example, can be formed with a hole injection layer, a hole transfer layer, a light emitting layer, an electron transfer layer, an electron injection layer and the like. When a voltage is applied between the two electrodes in such an organic light emitting device structure, holes and electrons are injected to the organic material layer from the anode and the cathode, respectively, and when the injected holes and electrons meet, excitons are formed, and light emits when these excitons fall back to the ground state.

<CIT> describes an organic compound and a device including the same. In addition, it discloses a first electrode; a second electrode provided to face the first electrode; and at least one organic material layer provided between the first electrode and the second electrode, wherein one or more layers of the organic material layer include the compound.

<CIT> describes an organic compound which can be used as a material for an organic electroluminescent device and an organic electroluminescent device including the same. <CIT> discloses an organic optoelectronic device comprising: a positive electrode and a negative electrode, which face each other; and at least one organic layer located between the positive electrode and the negative electrode, wherein the organic layer includes a compound.

<CIT> describes compounds for organic optoelectronic devices, compositions for organic optoelectronic devices, organic optoelectronic devices and display devices.

<CIT> relates to a heterocyclic compound and an organic light emitting device comprising the same.

Development of new materials for such an organic light emitting device has been continuously required.

The present specification is directed to providing a heterocyclic compound, and an organic light emitting device including the same.

One embodiment of the present specification provides a heterocyclic compound of Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>:
<CHM>
wherein, in Chemical Formula <NUM>-<NUM> to <NUM>-<NUM>:.

Another embodiment of the present specification provides an organic light emitting device including a first electrode; a second electrode provided opposite to the first electrode; and one, two or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers include the heterocyclic compound.

A heterocyclic compound according to one embodiment of the present specification can be used as a material of an organic material layer of an organic light emitting device, and by using the same, efficiency can be enhanced, a low driving voltage can be obtained, and/or lifetime properties can be enhanced in the organic light emitting device.

One embodiment of the present specification provides a heterocyclic compound of Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>.

In the present specification, a description of a certain part "including" certain constituents means capable of further including other constituents, and does not exclude other constituents unless particularly stated on the contrary.

In the present specification, a description of one member being placed "on" another member includes not only a case of the one member adjoining the another member but a case of still another member being present between the two members.

Examples of substituents in the present specification are described below, however, the substituents are not limited thereto.

The term "substitution" means a hydrogen atom bonding to a carbon atom of a compound is changed to another substituent, and the position of substitution is not limited as long as it is a position at which a hydrogen atom is substituted, that is, a position at which a substituent can substitute, and when two or more substituents substitute, the two or more substituents can be the same as or different from each other.

In the present specification, the term "substituted or unsubstituted" means being substituted with one, two or more substituents selected from the group consisting of deuterium; a nitrile group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group, or being substituted with a substituent linking two or more substituents among the substituents illustrated above, or having no substituents. For example, "a substituent linking two or more substituents" can include an aryl group substituted with an aryl group, an aryl group substituted with a heteroaryl group, a heterocyclic group substituted with an aryl group, an aryl group substituted with an alkyl group, and the like.

In the present specification, the alkyl group can be linear or branched, and although not particularly limited thereto, the number of carbon atoms is preferably from <NUM> to <NUM>. Specific examples thereof include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, <NUM>-methyl-butyl, <NUM>-ethyl-butyl, pentyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, <NUM>-methylpentyl, <NUM>-methylpentyl, <NUM>-methyl-<NUM>-pentyl, <NUM>,<NUM>-dimethylbutyl, <NUM>-ethylbutyl, heptyl, n-heptyl, <NUM>-methyl-hexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, <NUM>-methylheptyl, <NUM>-ethylhexyl, <NUM>-propylpentyl, n-nonyl, <NUM>,<NUM>-dimethylheptyl, <NUM>-ethyl-propyl, <NUM>,<NUM>-dimethyl-propyl, isohexyl, <NUM>-methylhexyl, <NUM>-methylhexyl and the like, but are not limited thereto.

In the present specification, specific examples of the silyl group can include a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, a phenylsilyl group and the like, but are not limited thereto.

In the present specification, the aryl group is not particularly limited, but preferably has <NUM> to <NUM> carbon atoms, and the aryl group can be monocyclic or polycyclic.

When the aryl group is a monocyclic aryl group, the number of carbon atoms is not particularly limited, but is preferably from <NUM> to <NUM>. Specific examples of the monocyclic aryl group can include a phenyl group, a biphenyl group, a terphenyl group and the like, but are not limited thereto.

When the aryl group is a polycyclic aryl group, the number of carbon atoms is not particularly limited, but is preferably from <NUM> to <NUM>. Specific examples of the polycyclic aryl group can include a naphthyl group, an anthracenyl group, a phenanthryl group, a triphenylene group, a pyrenyl group, a phenalenyl group, a perylenyl group, a chrysenyl group, a fluorenyl group and the like, but are not limited thereto.

In the present specification, the heterocyclic group includes one or more atoms that are not carbon, that is, heteroatoms, and specifically, the heteroatom can include one or more atoms selected from the group consisting of O, N, Se, S and the like. The number of carbon atoms is not particularly limited, but is preferably from <NUM> to <NUM>, and the heterocyclic group can be monocyclic or polycyclic. Examples of the heterocyclic group can include a thiophene group, a furanyl group, a pyrrole group, an imidazolyl group, a thiazolyl group, an oxazolyl group, an oxadiazolyl group, a pyridyl group, a bipyridyl group, a pyrimidyl group, a triazinyl group, a triazolyl group, an acridyl group, a pyridazinyl group, a pyrazinyl group, a quinolinyl group, a quinazolinyl group, a quinoxalinyl group, a phthalazinyl group, a pyridopyrimidyl group, a pyridopyrazinyl group, a pyrazinopyrazinyl group, an isoquinolinyl group, an indolyl group, a carbazolyl group, a benzoxazolyl group, a benzimidazolyl group, a benzothiazolyl group, a benzocarbazolyl group, a benzothiophene group, a dibenzothiophene group, a benzofuranyl group, a phenanthrolinyl group, an isoxazolyl group, a thiadiazolyl group, a phenothiazinyl group, a dibenzofuranyl group and the like, but are not limited thereto.

According to the present specification, R1 to R14 are hydrogen.

According to the present invention the claimed compound is according to any one of the following Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>:
<CHM>
<CHM>.

In Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>, L is selected from any one of substituents below
<CHM>
<CHM>.

According to the present specification, L is any one selected from among the following substituents:
<CHM>
<CHM>.

One of the dotted lines bonds to N of Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>, and the other one bonds to Ar.

According to the present specification, Ar is a phenyl group, a biphenyl group, a naphthyl group, a phenanthrene group, a triphenylene group, a dibenzofuran group, a dibenzothiophene group, or a carbazole group, and
the phenyl group, the biphenyl group, the naphthyl group, the phenanthrene group, the triphenylene group, the dibenzofuran group, the dibenzothiophene group, or the carbazole group is unsubstituted or substituted with an alkyl group having <NUM> to <NUM> carbon atoms, an aryl group having <NUM> to <NUM> carbon atoms, or a heteroaryl group having <NUM> to <NUM> carbon atoms.

According to one embodiment of the present specification, Ar is a phenyl group, a biphenyl group, a naphthyl group, a phenanthrene group, a triphenylene group, a dibenzofuran group, a dibenzothiophene group, or a carbazole group, and
the phenyl group, the biphenyl group, the naphthyl group, the phenanthrene group, the triphenylene group, the dibenzofuran group, the dibenzothiophene group, or the carbazole group is unsubstituted or substituted with a phenyl group or a naphthyl group.

According to another embodiment of the present specification, the heterocyclic compound of Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM> can be any one of the following compounds:
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>.

One embodiment of the present specification provides an organic light emitting device including a first electrode; a second electrode provided opposite to the first electrode; and one, two or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers include the heterocyclic compound.

According to one embodiment of the present disclosure, the organic material layer includes a light emitting layer, and the light emitting layer includes the heterocyclic compound.

According to one embodiment of the present disclosure, the organic material layer includes a light emitting layer, and the light emitting layer includes the heterocyclic compound as a host.

According to one embodiment of the present disclosure, the organic material layer includes a light emitting layer, and the light emitting layer includes the heterocyclic compound as a red host.

According to one embodiment of the present disclosure, the light emitting layer further includes a dopant.

According to one embodiment of the present disclosure, the light emitting layer includes a metal complex as the dopant.

According to one embodiment of the present disclosure, the light emitting layer includes an iridium-based complex as the dopant.

According to one embodiment of the present disclosure, the light emitting layer includes any one of the following compounds as the dopant:
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>
<CHM>.

According to one embodiment of the present disclosure, the light emitting layer includes the host and the dopant in a weight ratio of <NUM>:<NUM> to <NUM>:<NUM>.

According to one embodiment of the present disclosure, the organic material layer includes an electron injection layer, an electron transfer layer, or an electron injection and transfer layer, and the electron injection layer, the electron transfer layer, or the electron injection and transfer layer includes the heterocyclic compound.

According to one embodiment of the present disclosure, the organic material layer includes a hole injection layer, a hole transfer layer, or a hole injection and transfer layer, and the hole injection layer, the hole transfer layer, or the hole injection and transfer layer includes the heterocyclic compound.

According to one embodiment of the present disclosure, the organic material layer includes an electron blocking layer or a hole blocking layer, and the electron blocking layer or the hole blocking layer includes the heterocyclic compound.

For example, the organic light emitting device of the present disclosure can have structures as illustrated in <FIG>, however, the structure is not limited thereto.

<FIG> illustrates a structure of the organic light emitting device in which a first electrode (<NUM>), an organic material layer (<NUM>) and a second electrode (<NUM>) are consecutively laminated on a substrate (<NUM>).

<FIG> illustrates a structure of the organic light emitting device in which a first electrode (<NUM>), a hole injection layer (<NUM>), a hole transfer layer (<NUM>), an electron blocking layer (<NUM>), a light emitting layer (<NUM>), a hole blocking layer (<NUM>), an electron injection and transfer layer (<NUM>) and a second electrode (<NUM>) are consecutively laminated on a substrate (<NUM>).

<FIG> illustrates the organic light emitting device, and the structure is not limited thereto, and additional organic material layers can be further included between each layer.

For example, the organic light emitting device according to the present disclosure can be manufactured by forming an anode on a substrate by depositing a metal, a metal oxide having conductivity, or an alloy thereof using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation, forming an organic material layer including a hole injection layer, a hole transfer layer, a light emitting layer or an electron transfer layer and an organic material layer including the heterocyclic compound of Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM> thereon, and then depositing a material usable as a cathode thereon. In addition to such a method, the organic light emitting device can also be manufactured by consecutively depositing a cathode material, an organic material layer and an anode material on a substrate.

As the anode material, materials having large work function are normally preferred so that hole injection to an organic material layer is smooth. Specific examples of the anode material usable in the present disclosure include metals such as vanadium, chromium, copper, zinc and gold, or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO) and indium zinc oxide (IZO); combinations of metals and oxides such as ZnO:Al or SnO<NUM>:Sb; conductive polymers such as polypyrrole and polyaniline, but are not limited thereto.

As the cathode material, materials having small work function are normally preferred so that electron injection to an organic material layer is smooth. Specific examples of the cathode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof; multilayer structure materials such as LiF/Al or LiO<NUM>/Al, and the like, but are not limited thereto.

The hole injection material is a material favorably receiving holes from an anode at a low voltage, and the highest occupied molecular orbital (HOMO) of the hole injection material is preferably in between the work function of an anode material and the HOMO of surrounding organic material layers. Specific examples of the hole injection material include metal porphyrins, oligothiophene, arylamine-based organic materials, hexanitrile hexaazatriphenylene-based organic materials, quinacridone-based organic materials, perylene-based organic materials, anthraquinone, polyaniline, and polycompound-based conductive polymers, and the like, but are not limited thereto.

The hole transfer material is a material capable of receiving holes from an anode or a hole injection layer, moving the holes to a light emitting layer, and materials having high mobility for the holes are suited. Specific examples thereof include arylamine-based organic materials, conductive polymers, block copolymers having conjugated parts and non-conjugated parts together, and the like, but are not limited thereto.

The light emitting material is a material capable of emitting light in a visible region by receiving holes and electrons from a hole transfer layer and an electron transfer layer, respectively, and binding the holes and the electrons, and is preferably a material having favorable quantum efficiency for fluorescence or phosphorescence. Specific examples thereof include <NUM>-hydroxy-quinoline aluminum complexes (Alq<NUM>); carbazole-based compounds; dimerized styryl compounds; BAlq; <NUM>-hydroxybenzoquinoline-metal compounds; benzoxazole-, benzothiazole- and benzimidazole-based compounds; poly(p-phenylenevinylene) (PPV)-based polymers; spiro compounds; polyfluorene, rubrene, and the like, but are not limited thereto.

When the organic light emitting device includes a plurality of organic material layers, the organic material layers can be formed with materials the same as or different from each other.

The organic light emitting device of the present specification can be manufactured using materials and methods known in the art, except that one of more layers of the organic material layers are formed using the heterocyclic compound.

The dopant material can include aromatic heterocyclic compounds, styrylamine compounds, boron complexes, fluoranthene compounds, metal complexes and the like. Specifically, the aromatic heterocyclic compound is a fused aromatic ring derivative having a substituted or unsubstituted arylamino group, and arylamino group-including pyrene, anthracene, chrysene, periflanthene and the like can be included. The styrylamine compound is a compound in which substituted or unsubstituted arylamine is substituted with at least one arylvinyl group, and one, two or more substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group and an arylamino group can be substituted or unsubstituted. Specifically, styrylamine, styryldiamine, styryltriamine, styryltetramine and the like can be included, however, the styrylamine compound is not limited thereto. As the metal complex, iridium complexes, platinum complexes and the like can be included, however, the metal complex is not limited thereto.

The electron transfer layer is a layer that receives electrons from an electron injection layer and transfers the electrons to a light emitting layer, and as the electron transfer material, materials capable of favorably receiving electrons from a cathode, moving the electrons to a light emitting layer, and having high mobility for the electrons are suited. Specific examples thereof include Al complexes of <NUM>-hydroxyquinoline; complexes including Alq<NUM>; organic radical compounds; hydroxyflavon-metal complexes, and the like, but are not limited thereto. The electron transfer layer can be used together with any desired cathode material as used in the art. Particularly, examples of the suitable cathode material include common materials that have small work function, and in which an aluminum layer or a silver layer follows. Specifically, the cathode material includes cesium, barium, calcium, ytterbium and samarium, and in each case, an aluminum layer or a silver layer follows.

The electron injection layer is a layer that injects electrons from an electrode, and as the electron injection material, compounds having an electron transferring ability, having an electron injection effect from a cathode, having an excellent electron injection effect for a light emitting layer or light emitting material, and preventing excitons generated in the light emitting layer from moving to a hole injection layer, and in addition thereto, having an excellent thin film forming ability are preferred. Specific examples thereof include fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylene tetracarboxylic acid, fluorenylidene methane, anthrone or the like, and derivatives thereof, metal complex compounds, nitrogen-containing <NUM>-membered ring derivatives, and the like, but are not limited thereto.

The metal complex compound includes <NUM>-hydroxyquinolinato lithium, bis(<NUM>-hydroxyquinolinato)zinc, bis(<NUM>-hydroxyquinolinato)copper, bis(<NUM>-hydroxyquinolinato)-manganese, tris(<NUM>-hydroxyquinolinato)aluminum, tris(<NUM>-methyl-<NUM>-hydroxyquinolinato)aluminum, tris(<NUM>-hydroxy-quinolinato) gallium, bis(<NUM>-hydroxybenzo[h]quinolinato)-beryllium, bis(<NUM>-hydroxybenzo[h]quinolinato)zinc, bis(<NUM>-methyl-<NUM>-quinolinato)chlorogallium, bis(<NUM>-methyl-<NUM>-quinolinato)(o-cresolato)gallium, bis(<NUM>-methyl-<NUM>-quinolinato)(<NUM>-naphtholato)aluminum, bis(<NUM>-methyl-<NUM>-quinolinato) (<NUM>-naphtholato) gallium and the like, but is not limited thereto.

The hole blocking layer is a layer blocking holes from reaching a cathode, and can be generally formed under the same condition as the hole injection layer. Specific examples thereof can include oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, BCP, aluminum complexes and the like, but are not limited thereto.

The organic light emitting device according to the present specification can be a top-emission type, a bottom-emission type or a dual-emission type depending on the materials used.

The compounds of the present disclosure were prepared using, as a representative reaction, a Buchwald-Hartwig coupling reaction, a Suzuki coupling reaction or the like.

The following is a preparation example for a representative structure in the disclosure of the present specification, and by varying substituents, all the compounds of the present specification can be prepared.

After dissolving <NUM>-nitronaphthalen-<NUM>-yl trifluoromethane sulfonate (<NUM>, <NUM> eq. ) and triphenylen-<NUM>-ylboronic acid (<NUM>, <NUM> eq. ) in tetrahydrofuran (THF) (<NUM>), K<NUM>CO<NUM> (<NUM>, <NUM> eq. ) dissolved in water (<NUM>) was introduced thereto. Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) was introduced thereto, and the result was stirred under reflux. When the reaction was finished, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and treated with anhydrous magnesium sulfate. The result was vacuumed again to remove the solvent, and the result was column chromatographed to obtain Compound A-<NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A-<NUM> (<NUM>, <NUM> eq. ) was introduced to triethylphosphite (<NUM>), and the result was stirred under reflux. The reaction was terminated after <NUM> hours, and the reaction material was poured into ethanol (<NUM>) to precipitate solids. These solids were completely dissolved in CHCl<NUM>, washed with water, and treated with anhydrous magnesium sulfate. The solution was vacuum concentrated and purified using column chromatography to obtain Compound A (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B was synthesized in the same manner as in the method for preparing Compound A except that <NUM>-nitronaphthalen-<NUM>-yl trifluoromethane sulfonate was used instead of <NUM>-nitronaphthalen-<NUM>-yl trifluoromethane sulfonate in Preparation Example <NUM>.

Compound C was synthesized in the same manner as in the method for preparing Compound A except that <NUM>-<NUM>-nitronaphthalen-<NUM>-yl trifluoromethane sulfonate was used instead of <NUM>-nitronaphthalen-<NUM>-yl trifluoromethane sulfonate in Preparation Example <NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-phenylbenzo[h]quinazoline (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-phenylbenzo[<NUM>,<NUM>]thieno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-([<NUM>,<NUM>'-biphenyl]-<NUM>-yl)-<NUM>-chloro-<NUM>,<NUM>-dimethyl-<NUM>-indeno[<NUM>,<NUM>-b]pyrazine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]furan-<NUM>-yl)benzo[f]quinazoline (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]furan-<NUM>-yl)-<NUM>,<NUM>-dimethyl-<NUM>-indeno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]thiophen-<NUM>-yl)benzofuro[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound A (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(<NUM>-phenyl-<NUM>-carbazol-<NUM>-yl)benzofuro[<NUM>,<NUM>-b]pyrazine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(<NUM>-phenylnaphthalen-<NUM>-yl)benzofuro[<NUM>,<NUM>-b]pyrazine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(<NUM>-(naphthalen-<NUM>-yl)phenyl)benzo[h]quinazoline (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(naphthalen-<NUM>-yl)benzo[f]quinoxaline (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(phenanthren-<NUM>-yl)benzo[<NUM>,<NUM>]thieno[<NUM>,<NUM>-b]pyrazine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]furan-<NUM>-yl)benzo[<NUM>,<NUM>]thieno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]thiophen-<NUM>-yl)-<NUM>,<NUM>-dimethyl-<NUM>-indeno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]thiophen-<NUM>-yl)-<NUM>,<NUM>-dimethyl-<NUM>-indeno[<NUM>,<NUM>-b]pyrazine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]thiophen-<NUM>-yl)benzofuro[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound B (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>,<NUM>-dimethyl-<NUM>-(triphenylen-<NUM>-yl)-<NUM>-indeno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound C (<NUM>, <NUM> eq. ), <NUM>-([<NUM>,<NUM>':<NUM>',<NUM>"-terphenyl]-<NUM>-yl)-<NUM>-chloro-<NUM>,<NUM>-dimethyl-<NUM>-indeno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>). [M+H]=<NUM>.

Compound C (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(dibenzo[b,d]furan-<NUM>-yl)benzo[<NUM>,<NUM>]thieno[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound C (<NUM>, <NUM> eq. ), <NUM>-([<NUM>,<NUM>':<NUM>',<NUM>"-terphenyl]-<NUM>'-yl)-<NUM>-chlorobenzofuro[<NUM>,<NUM>-d]pyrimidine (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

Compound C (<NUM>, <NUM> eq. ), <NUM>-chloro-<NUM>-(<NUM>-phenyl-<NUM>-carbazol-<NUM>-yl)benzo[f]quinazoline (<NUM>, <NUM> eq. ), Pd(t-Bu<NUM>P)<NUM> (<NUM>, <NUM> eq. ) and K<NUM>PO<NUM> (<NUM>, <NUM> eq. ) were introduced to xylene (<NUM>), and the result was stirred under reflux. When the reaction was terminated after <NUM> hours, the result was vacuumed to remove the solvent. After that, the result was completely dissolved in CHCl<NUM>, washed with water, and vacuumed again to remove approximately <NUM>% of the solvent. Under reflux again, crystals were precipitated while adding ethyl acetate thereto, and cooled and then filtered. The result was column chromatographed to obtain Compound <NUM> (<NUM>, yield <NUM>%). [M+H]=<NUM>.

A glass substrate on which indium tin oxide (ITO) was coated as a thin film to a thickness of <NUM>,<NUM>Å was placed in distilled water in which detergent was dissolved and ultrasonically cleaned. A product of Fischer Co. was used as the detergent, and as the distilled water, distilled water filtered twice with a filter manufactured by Millipore Co. After the ITO was cleaned for <NUM> minutes, ultrasonic cleaning was repeated twice using distilled water for <NUM> minutes. After the cleaning with distilled water was finished, the substrate was ultrasonically cleaned with solvents of isopropyl alcohol, acetone and methanol, then dried, and then transferred to a plasma cleaner. The substrate was cleaned for <NUM> minutes using oxygen plasma, and then transferred to a vacuum depositor.

On the transparent ITO electrode prepared as above, the following HI-<NUM> compound was formed to a thickness of <NUM>Å as a hole injection layer, and the following D-<NUM> compound was p-doped thereto in a concentration of <NUM>%. On the hole injection layer, a hole transfer layer having a film thickness of <NUM>Å was formed by vacuum depositing the following HT-<NUM> compound. Subsequently, an electron blocking layer was formed to a film thickness of <NUM>Å on the hole transfer layer by vacuum depositing the following EB-<NUM> compound. Then, a red light emitting layer having a thickness of <NUM>Å was formed on the EB-<NUM> deposited film by vacuum depositing the following RH-<NUM> compound and the following Dp-<NUM> compound in a weight ratio of <NUM>:<NUM>. On the light emitting layer, a hole blocking layer was formed to a film thickness of <NUM>Å by vacuum depositing the following HB-<NUM> compound. Subsequently, an electron injection and transfer layer was formed to a thickness of <NUM>Å on the hole blocking layer by vacuum depositing the following ET-<NUM> compound and the following LiQ compound in a weight ratio of <NUM>:<NUM>. On the electron injection and transfer layer, a cathode was formed by consecutively depositing lithium fluoride (LiF) to a thickness of <NUM>Å and aluminum to a thickness of <NUM>,<NUM>Å.

In the above-mentioned process, the deposition rates of the organic materials were maintained at <NUM>Å/sec to <NUM>Å/sec, the deposition rates of the lithium fluoride and the aluminum of the cathode were maintained at <NUM>Å/sec and <NUM>Å/sec, respectively, and the degree of vacuum during the deposition was maintained at <NUM>×<NUM>-<NUM> torr to <NUM>×<NUM>-<NUM> torr to manufacture an organic light emitting device. <CHM>
<CHM>
<CHM>.

Organic light emitting devices were manufactured in the same manner as in Comparative Example <NUM> except that compounds described in the following Table <NUM> were used instead of RH-<NUM> in the organic light emitting device of Comparative Example <NUM>.

When applying a current to each of the organic light emitting devices manufactured in Example <NUM> to Example <NUM>, and Comparative Example <NUM> to Comparative Example <NUM>, voltage, efficiency and lifetime were measured, and the results are shown in the following Table <NUM>. T95 means time taken for luminance decreasing to <NUM>% with respect to initial luminance (<NUM>,<NUM> nit).

When applying a current to each of the organic light emitting devices manufactured in Examples <NUM> to <NUM> and Comparative Examples <NUM> to <NUM>, results of Table <NUM> were obtained. In the red organic light emitting device of Comparative Example <NUM>, materials widely used in the art were used.

In Comparative Examples <NUM> to <NUM>, organic light emitting devices were manufactured using C-<NUM> to C-<NUM> instead of RH-<NUM>. Based on the results of Table <NUM>, a driving voltage decreased by up to almost <NUM>% when using the compounds of the present disclosure as a host of a red light emitting layer compared to the materials of the comparative examples, and efficiency also increased by <NUM>% or greater. Based on such results, it was seen that energy was favorably transferred from the host to the red dopant. In addition, it was seen that lifetime properties were significantly improved by <NUM> times or greater while maintaining high efficiency.

Claim 1:
A heterocyclic compound of any one of the following Chemical Formulae <NUM>-<NUM> to <NUM>-<NUM>:
<CHM>
wherein, in Chemical Formula <NUM>-<NUM> to <NUM>-<NUM>:
L is selected from any one of substituents below
<CHM>
<CHM>
Ar is a phenyl group, a biphenyl group, a naphthyl group, a phenanthrene group, a triphenylene group, a dibenzofuran group, a dibenzothiophene group, or a carbazole group, and
the phenyl group, the biphenyl group, the naphthyl group, the phenanthrene group, the triphenylene group, the dibenzofuran group, the dibenzothiophene group, or the carbazole group is unsubstituted or substituted with an alkyl group having <NUM> to <NUM> carbon atoms, an aryl group having <NUM> to <NUM> carbon atoms, or a heteroaryl group having <NUM> to <NUM> carbon atoms ; and
R1 to R14 are hydrogen.