JP7347923B2 - organic light emitting device - Google Patents

Description

The present invention relates to an organic light emitting device.

Organic light-emitting devices are self-luminous devices that not only have a wide viewing angle and excellent contrast, but also have short response times, excellent brightness, drive voltage, and response speed characteristics, and are highly versatile. It has the advantage of being colorizable.

In an organic light emitting device, a first electrode is arranged on a substrate, and a hole transport region, a light emitting layer, an electron transport region, and a second electrode are arranged on the first electrode. It is possible to have a structure formed sequentially. Holes injected from the first electrode move to the light emitting layer via the hole transport region, and electrons injected from the second electrode move to the light emitting layer via the electron transport region. Carriers such as holes and electrons recombine in the emissive layer region to generate excitons. Light is generated as these excitons change from an excited state to a ground state.

Korean Published Patent No. 2017-0049440

The problem to be solved by the present invention is to provide an organic light emitting device.

According to one embodiment, the organic layer includes a first electrode, a second electrode, and a light emitting layer interposed between the first electrode and the second electrode.
The organic layer includes a first compound, a second compound, and a third compound,
The first compound, the second compound, and the third compound are each selected from the group consisting of azine compounds represented by the following chemical formulas 1-1 to 1-5, and the first compound, the second compound, and the third compound are An organic light emitting device is provided which is excluded when the azine compounds represented by the following chemical formulas 1-3 are selected at the same time.

In chemical formulas 1-1 to 1-5,
X _11a is selected from N and C [(L _11a ) _a11a - R _11a ], X _11b is selected from N and C [(L _11b ) _a11b - R _11b ], and X _11c is selected from N and C[ (L _11c ) _a11c −R _11c ], X _11d is selected from N and C[( _L11d ) _a11d −R _11d ], and X _11e is selected from N and C[(L _11e ) _a11e −R _11e ], X _11f is selected from N and C[(L _11f ) _a11f −R _11f ], one of X _11a to X _11f is N,
X _12a is selected from N and C [(L _12a ) _a12a - R _12a ], X _12b is selected from N and C [(L _12b ) _a12b - R _12b ], and X _12c is selected from N and C[ (L _12c ) _a12c −R _12c ], X _12d is selected from N and C[(L _12d ) _a12d −R _12d ], and X _12e is selected from N and C[(L _12e ) _a12e −R _12e ], X _12f is selected from N and C [(L _12f ) _a12f −R _12f ], two of X _12a to X _12f are N,
X _13a is selected from N and C[(L _13a ) _a13a −R _13a ], X _13b is selected from N and C[(L _13b ) _a13b −R _13b ], and X _13c is selected from N and C[ (L _13c ) _a13c −R _13c ], X _13d is selected from N and C[(L _13d ) _a13d −R _13d ], and X _13e is selected from N and C[(L _13e ) _a13e −R _13e ], X _13f is selected from N and C [(L _13f ) _a13f −R _13f ], three of X _13a to X _13f are N,
X _14a is selected from N and C[(L _14a ) _a14a −R _14a ], X _14b is selected from N and C[(L _14b ) _a14b −R _14b ], and X _14c is selected from N and C[ (L _14c ) _a14c −R _14c ], X _14d is selected from N and C[(L _14d ) _a14d −R _14d ], and X _14e is selected from N and C[(L _14e ) _a14e −R _14e ], X _14f is selected from N and C[(L _14f ) _a14f −R _14f ], and four of X _14a to X _14f are N;
X _15a is selected from N and C [(L _15a ) _a15a - R _15a ], X _15b is selected from N and C [(L _15b ) _a15b - R _15b ], and X _15c is selected from N and C[ (L _15c ) _a15c −R _15c ], X _15d is selected from N and C[(L _15d ) _a15d −R _15d ], and X _15e is selected from N and C[(L _15e ) _a15e −R _15e ], X _15f is selected from N and C[(L _15f ) _a15f −R _15f ], and five of X _15a to X _15f are N;
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a C ₃ -C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ - C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic fused polycyclic group and divalent non-aromatic hetero fused polycyclic group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group , monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero-fused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group , pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group , a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and an imidazopyridinyl group. , a C ₃ -C ₁₀ cycloalkenylene group, a C ₁ -C ₁₀ heterocycloalkenylene group, a C ₆ -C ₆₀ arylene group, a C ₁ -C ₆₀ heteroarylene group, a divalent non-aromatic fused polycyclic group, and selected from divalent non-aromatic heterofused polycyclic groups,
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a triazinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group, monovalent non-aromatic group fused polycyclic group, monovalent non-aromatic heterofused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group , an oxadiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and a triazinylene group substituted with at least one selected from an imidazopyridinyl group. not,
a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are independently selected from 0, 1, 2, 3, and 4,
R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, deuterium, -F, -Cl, -Br , -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group , n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero-fused polycyclic group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic group Hetero-fused polycyclic group; and methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl substituted with at least one selected from deuterium, -F, -Cl, -Br and -I group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, a phenyl group substituted with at least one selected from a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group; Biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group , a benzothienopyridinyl group, a benzofuropyrimidinyl group, a benzothienopyrimidinyl group, a monovalent non-aromatic fused polycyclic group, and a monovalent non-aromatic hetero-fused polycyclic group; and adjacent R _11a ~ R _11f , adjacent R _12a to R _12f , adjacent R _13a to R _13f , adjacent R _14a to R _14f , and/or adjacent R _15a to R _15f may form a saturated ring or an unsaturated ring. good.

According to another embodiment, a substrate partitioned into a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region;
a plurality of first electrodes arranged in each of a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region of the substrate;
a second electrode facing the plurality of first electrodes;
an organic layer interposed between a plurality of first electrodes and a plurality of second electrodes and including a light emitting layer;
The organic layer includes a first compound, a second compound, and a third compound,
The first compound, the second compound and the third compound are each selected from azine compounds represented by any one of chemical formulas 1-1 to 1-5, and the first compound, the second compound and the third compound is simultaneously selected from azine-based compounds represented by Chemical Formulas 1-3.

The organic light emitting device of the present invention can achieve low driving voltage, high efficiency, and long life.

1 is a diagram schematically illustrating the structure of an organic light emitting device according to an embodiment of the present invention. FIG. 3 is a diagram schematically illustrating the structure of an organic light emitting device according to another embodiment of the present invention. FIG. 3 is a diagram schematically illustrating the structure of an organic light emitting device according to another embodiment of the present invention. FIG. 3 is a diagram schematically illustrating the structure of an organic light emitting device according to another embodiment of the present invention.

Although the present invention is susceptible to various modifications and may have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail by the detailed description. The effects, features, and methods of achieving them will become clearer with reference to the embodiments described in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments and examples disclosed below, but may be realized in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, the same or corresponding constituent elements are designated by the same drawing symbols, Duplicate explanations regarding this will be omitted. In the following embodiments, the singular expression includes the plural expression unless the context clearly means otherwise.

In the following examples, terms such as "comprising" or "having" refer to the presence of a feature or component described in the specification, and one or more other features or components. This does not exclude in advance the possibility that In the following examples, when a part, such as a membrane, region, component, etc., is referred to as being on or on top of another part, it is not only referred to as being directly on top of another part, but also in between. It also includes cases where a membrane, region, component, etc. are interposed.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, and the present invention is not necessarily limited to what is shown in the drawings.

[General definition of substituents]
In this specification, the C ₁ -C ₆₀ alkyl group means a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and specific examples include a methyl group, an ethyl group, , propyl group, isobutyl group, sec-butyl group, ter-butyl group, pentyl group, iso-amyl group, hexyl group, and the like. As used herein, a C ₁ -C ₆₀ alkylene group means a divalent group having the same structure as a C ₁ -C ₆₀ alkyl group.

As used herein, a C ₂ -C ₆₀ alkenyl group means a hydrocarbon group containing one or more carbon double bonds at the middle or end of a C ₂ -C ₆₀ alkyl group; includes ethenyl group, propenyl group, butenyl group, etc. As used herein, a C ₂ -C ₆₀ alkenylene group means a divalent group having the same structure as a C ₂ -C ₆₀ alkenyl group.

As used herein, a C ₂ -C ₆₀ alkynyl group means a hydrocarbon group containing one or more carbon triple bonds at the middle or end of a C ₂ -C ₆₀ alkyl group, and specific examples include , ethynyl group, propynyl group, etc. As used herein, a C ₂ -C ₆₀ alkynylene group means a divalent group having the same structure as a C ₂ -C ₆₀ alkynyl group.

As used herein, C ₁ -C ₆₀ alkoxy group means a monovalent group having the chemical formula -OA ₁₀₁ (where A ₁₀₁ is a C ₁ -C ₆₀ alkyl group), and its specific Examples include methoxy, ethoxy, isopropyloxy, and the like.

As used herein, the C ₃ -C ₁₀ cycloalkyl group means a monovalent saturated hydrocarbon monocyclic group having 3 to 10 carbon atoms, and specific examples thereof include cyclopropyl group, cyclobutyl group, cyclopentyl group. , cyclohexyl group, cycloheptyl group, etc. As used herein, a C ₃ -C ₁₀ cycloalkylene group means a divalent group having the same structure as a C ₃ -C ₁₀ cycloalkyl group.

As used herein, a C ₁ -C ₁₀ heterocycloalkyl group is a monovalent group having 1 to 10 carbon atoms containing at least one heteroatom selected from N, O, Si, P, and S as a ring-forming atom. It means a monocyclic group, and specific examples thereof include a 1,2,3,4-oxatriazolidinyl group, a tetrahydrofuranyl group, a tetrahydrothiophenyl group, and the like. As used herein, a C ₁ -C ₁₀ heterocycloalkylene group means a divalent group having the same structure as a C ₁ -C ₁₀ heterocycloalkyl group.

As used herein, a C ₃ -C ₁₀ cycloalkenyl group is a monovalent monocyclic group having 3 to 10 carbon atoms, and has at least one double bond in the ring, but has aromaticity. Specific examples include a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, and the like. As used herein, a C ₃ -C ₁₀ cycloalkenylene group means a divalent group having the same structure as a C ₃ -C ₁₀ cycloalkenyl group.

As used herein, a C ₁ -C ₁₀ heterocycloalkenyl group is a monovalent group having 1 to 10 carbon atoms and containing at least one heteroatom selected from N, O, Si, P, and S as a ring-forming atom. It is a monocyclic group and has at least one double bond within the ring. Specific examples of the C ₁ -C ₁₀ heterocycloalkenyl group include 4,5-dihydro-1,2,3,4-oxatriazolyl group, 2,3-dihydrofuranyl group, 2,3-dihydrothio Contains phenyl groups. As used herein, a C ₁ -C ₁₀ heterocycloalkenylene group means a divalent group having the same structure as a C ₁ -C ₁₀ heterocycloalkenyl group.

As used herein, a C ₆ -C ₆₀ aryl group means a monovalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms, and a C ₆ -C ₆₀ arylene group refers to a monovalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms. means a divalent group having a carbocyclic aromatic system. Specific examples of the C ₆ -C ₆₀ aryl group include phenyl group, naphthyl group, anthracenyl group, phenanthrenyl group, pyrenyl group, chrysenyl group, and the like. When the C ₆ -C ₆₀ aryl group and the C ₆ -C ₆₀ arylene group contain two or more rings, the two or more rings are fused together.

As used herein, the C ₁ -C ₆₀ heteroaryl group is a heterocyclic aromatic group containing at least one heteroatom selected from N, O, Si, P and S as a ring-forming atom, and having 1 to 60 carbon atoms. A C ₁ -C ₆₀ heteroarylene group includes at least one heteroatom selected from N, O, Si, P, and S as a ring-forming atom, and has 1 to 1 carbon atoms. means a divalent group having 60 heterocyclic aromatic systems. Specific examples of C ₁ -C ₆₀ heteroaryl groups include pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl and the like. When the C ₁ -C ₆₀ heteroaryl group and the C ₁ -C ₆₀ heteroarylene group contain two or more rings, the two or more rings are fused together.

As used herein, a C ₆ -C ₆₀ aryloxy group refers to -OA ₁₀₂ (where A ₁₀₂ is a C ₆ -C ₆₀ aryl group), and a C ₆ -C ₆₀ arylthio group refers to -SA ₁₀₃ (where A ₁₀₃ is a C6-C60 aryl group).

As used herein, a C ₁ -C ₆₀ heteroaryloxy group refers to -OA ₁₀₄ (wherein A ₁₀₄ is a C ₁ -C ₆₀ heteroaryl group), a C ₁ -C ₆₀ heteroarylthio group represents -SA ₁₀₅ (where A ₁₀₅ is a C ₁ -C ₆₀ heteroaryl group).

As used herein, a monovalent non-aromatic fused polycyclic group has two or more rings fused together, contains only carbon as a ring-forming atom, and has non-aromaticity in the entire molecule. means a monovalent group having (eg, having 8 to 60 carbon atoms). Specific examples of monovalent non-aromatic condensed polycyclic groups include fluorenyl groups and the like. In this specification, a divalent non-aromatic fused polycyclic group means a divalent group having the same structure as a monovalent non-aromatic fused polycyclic group.

As used herein, a monovalent non-aromatic heterofused polycyclic group has two or more rings fused together, and the ring-forming atoms are selected from N, O, Si, P, and S in addition to carbon. It means a monovalent group containing at least one heteroatom and having non-aromatic character throughout the molecule (eg, having 1 to 60 carbon atoms). Specific examples of the monovalent non-aromatic heterofused polycyclic group include a carbazolyl group and the like. In this specification, a divalent non-aromatic heterofused polycyclic group means a divalent group having the same structure as a monovalent non-aromatic heterofused polycyclic group.

As used herein, the C ₅ -C ₆₀ carbocyclic group means a monocyclic group or polycyclic group having 5 to 60 carbon atoms and containing only carbon as a ring-forming atom. The C ₅ -C ₆₀ carbocyclic group may be an aromatic carbocyclic group or a non-aromatic carbocyclic group. A C ₅ -C ₆₀ carbocyclic group may be a ring such as benzene, a monovalent group such as a phenyl group, or a divalent group such as a phenylene group. Alternatively, depending on the number of substituents attached to the C ₅ -C ₆₀ carbocyclic group, the C ₅ -C ₆₀ carbocyclic group may be a trivalent group or a tetravalent group. is possible.

As used herein, a C ₁ -C ₆₀ heterocyclic group has the same structure as a C ₅ -C ₆₀ carbocyclic group, but contains carbon (the number of carbon atoms is 1 to 60) as a ring forming atom. ), it means a group containing at least one heteroatom selected from N, O, Si, P and S.

As used herein, substituted C ₅ -C ₆₀ carbocyclic groups, substituted C ₁ -C ₆₀ heterocyclic groups, substituted C ₃ -C ₁₀ cycloalkylene groups, substituted C ₁ -C ₁₀ heterocycloalkylene group, substituted C ₃ -C ₁₀ cycloalkenylene group, substituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted C ₆ -C ₆₀ arylene group, substituted C ₁ -C ₆₀ Heteroarylene group, substituted divalent non-aromatic fused polycyclic group, substituted divalent non-aromatic hetero fused polycyclic group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ - C ₆₀ alkenyl, substituted C ₂ -C ₆₀ alkynyl, substituted C ₁ -C ₆₀ alkoxy, substituted C ₃ -C ₁₀ cycloalkyl, substituted C ₁ -C ₁₀ heterocycloalkyl a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₆ -C ₆₀ aryloxy group, Substituted C ₆ - C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₁ -C ₆₀ heteroaryloxy group, substituted C ₁ -C ₆₀ heteroarylthio group, substituted At least one of the substituents of the monovalent non-aromatic fused polycyclic group and the substituted monovalent non-aromatic hetero fused polycyclic group,
Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl groups, C ₂ -C ₆₀ alkynyl groups and C ₁ -C ₆₀ alkoxy groups;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₁ -C ₆₀ heteroaryloxy group, C ₁ -C ₆₀ heteroarylthio group, monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero fused polycyclic group, -Si (Q ₁₁ )(Q ₁₂ )(Q ₁₃ ), -N(Q ₁₁ )(Q ₁₂ ), -B(Q ₁₁ )(Q ₁₂ ), -C(=O)(Q ₁₁ ), -S(= O) a C ₁ -C ₆₀ alkyl group _, a C ₂ -C ₆₀ alkenyl group, substituted with at least one selected from 2 (Q ₁₁ ) and -P(=O)(Q ₁₁ )(Q ₁₂ ), C ₂ -C ₆₀ alkynyl group and C ₁ -C ₆₀ alkoxy group;
C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₁ -C ₆₀ heteroaryloxy group, C ₁ -C ₆₀ heteroarylthio group, monovalent non-aromatic condensed polyester cyclic groups and monovalent non-aromatic heterofused polycyclic groups;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocyclo Alkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₁ -C ₆₀ heteroaryloxy group, C ₁ - C ₆₀ heteroarylthio group, monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero fused polycyclic group, -Si(Q ₂₁ )(Q ₂₂ )(Q ₂₃ ), -N(Q ₂₁ )(Q ₂₂ ), -B(Q ₂₁ )(Q ₂₂ ), -C(=O)(Q ₂₁ ), -S(=O) ₂ (Q ₂₁ ) and -P(=O)(Q ₂₁ ) (Q ₂₂ ) substituted with at least one selected from C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ hetero Cycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₁ -C ₆₀ heteroaryloxy group, C ₁ -C ₆₀ heteroarylthio group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero fused polycyclic group; and -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N( Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and -P(=O)(Q ₃₁ ) (Q ₃₂ );
Q ₁₁ to Q ₁₃ , Q ₂₁ to Q ₂₃ , and Q ₃₁ to Q ₃₃ each independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group. , amidino group, hydrazino group, hydrazono group, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group , C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₁ -C ₆₀ heteroaryl group, C ₁ - Selected from C ₆₀ heteroaryloxy group, C ₁ -C ₆₀ heteroarylthio group, monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero fused polycyclic group, deuterium/-F and cyano group a _{C 1} -C ₆₀ alkyl group substituted with at least one selected from deuterium--F and a cyano group, a _biphenyl group, and a terphenyl group. Also selected from the group.

As used herein, "Ph" means a phenyl group, "Me" means a methyl group, "Et" means an ethyl group, "ter-Bu" or "But" means a tert - means a butyl group, and "OMe" means a methoxy group.

As used herein, "biphenyl group" means "phenyl group substituted with phenyl group." The "biphenyl group" belongs to the "substituted phenyl group" in which the substituent is a "C ₆ -C ₆₀ aryl group".

As used herein, "terphenyl group" means "phenyl group substituted with biphenyl group.""Terphenylgroup" belongs to "substituted phenyl group" whose substituent is "C ₆ -C ₆₀ aryl group substituted with C ₆ -C ₆₀ aryl group".

As used herein, * and *' mean a bonding site with an adjacent atom in a chemical formula, unless otherwise defined.

The organic light emitting device includes a first electrode, a second electrode, and an organic layer including a light emitting layer interposed between the first electrode and the second electrode, and the organic layer includes a first compound and a second compound. and a third compound, the first compound, the second compound and the third compound are each selected from azine compounds represented by any one of the following chemical formulas 1-1 to 1-5, and the first compound, The case where the second compound and the third compound are simultaneously selected as azine compounds represented by the following chemical formula 1-3 is excluded.

In Formula 1-1, X _11a is selected from N and C [(L _11a ) _a11a - R _11a ], X _11b is selected from N and C [(L _11b ) _a11b - R _11b ], and X _11c is selected from N and C[(L _11c ) _a11c −R _11c ], X _11d is selected from N and C[(L _11d ) _a11d −R _11d ], and X _11e is selected from N and C[(L _11e ) _a11e −R _11e ], and X _11f is selected from N and C[(L _11f ) _a11f −R _11f ], and one of X _11a to X _11f may be N. Here, L _11a to L _11f , a11a to a11f, and R _11a to R _11f will be described later.

In Formula 1-2, X _12a is selected from N and C [(L _12a ) _a12a - R _12a ], X _12b is selected from N and C [(L _12b ) _a12b - R _12b ], and X _12c is selected from N and C[(L _12c ) _a12c −R _12c ], X _12d is selected from N and C[(L _12d ) _a12d −R _12d ], and X _12e is selected from N and C[(L 12d ) a12d −R 12d ]. _12e ) _a12e −R _12e ], and X _12f is selected from N and C[(L _12f ) _a12f −R _12f ], and two of X _12a to X _12f may be N. Here, L _12a to L _12f , a12a to a12f, and R _12a to R _12f will be explained later.

In Formula 1-3, X _13a is selected from N and C [(L _13a ) _a13a - R _13a ], X _13b is selected from N and C [(L _13b ) _a13b - R _13b ], and X _13c is selected from N and C[(L _13c ) _a13c −R _13c ], X _13d is selected from N and C[(L _13d ) _a13d −R _13d ], and X _13e is selected from N and C[(L _13e ) _a13e −R _13e ], and X _13f is selected from N and C[(L _13f ) _a13f −R _13f ], and three of X _13a to X _13f may be N. Here, L _13a to L _13f , a13a to a13f, and R _13a to R _13f will be described later.

In Formula 1-4, X _14a is selected from N and C [(L _14a ) _a14a - R _14a ], X _14b is selected from N and C [(L _14b ) _a14b - R _14b ], and X _14c is selected from N and C[(L _14c ) _a14c −R _14c ], X _14d is selected from N and C[(L _14d ) _a14d −R _14d ], and X _14e is selected from N and C[(L _14e ) _a14e −R _14e ], and X _14f is selected from N and C[(L _14f ) _a14f −R _14f ], and four of X _14a to X _14f may be N. Here, L _14a to L _14f , a14a to a14f, and R _14a to R _14f will be explained later.

In Formula 1-5, X _15a is selected from N and C [(L _15a ) _a15a - R _15a ], X _15b is selected from N and C [(L _15b ) _a15b - R _15b ], and X _15c is selected from N and C[(L _15c ) _a15c −R _15c ], X _15d is selected from N and C[(L _15d ) _a15d −R _15d ], and X _15e is selected from N and C[(L _15e ) _a15e −R _15e ], and X _15f is selected from N and C[(L _15f ) _a15f −R _15f ], and five of X _15a to X _15f may be N. Here, L _15a to L _15f , a15a to a15f, and R _15a to R _15f will be explained later.

In chemical formulas 1-1 to 1-5, L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent C ₃ - C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ -C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, non-aromatic condensed polycyclic group ) and divalent non-aromatic condensed heteropolycyclic group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, Amidino group, hydrazinyl group, hydrazonyl group, carboxy group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cyclo Alkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ - _C30 arylthio group, C1 _{- C30} heteroaryloxy group, _C1 - _C30 heteroarylthio group, monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero-fused polycyclic group, Pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group , quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group a C ₃ -C ₁₀ cycloalkenylene group, a C ₁ -C ₁₀ heterocycloalkenylene group, a C ₆ -C substituted with at least one of a group, a dibenzocarbazolyl group, a thiadiazolyl group, and an imidazopyridinyl group ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic fused polycyclic group and divalent non-aromatic heterofused polycyclic group,
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a triazinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group, monovalent non-aromatic group fused polycyclic group, monovalent non-aromatic heterofused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group , an oxadiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and a triazinylene group substituted with at least one selected from an imidazopyridinyl group. Not selected.

For example, in chemical formulas 1-1 to 1-5, L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent phenylene group, pentalenylene group, indenylene group, naphthylene group, azulenylene group, heptarenylene group, indasenylene group, acenaphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenalenylene group, phenanthrenylene group group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group, naphthaceneylene group, picenylene group, perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, rubisenylene group, coronenylene group, obarenylene group, pyrrolylene group group, thiophenylene group, furanylene group, imidazolylene group, pyrazolylene group, thiazolylene group, isothiazolylene group, oxazolylene group, isoxazorylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, pyridazinylene group, isoindolylene group, indolylene group, indazolylene group, Purinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, carbazorylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, phenazinylene group , benzimidazolylene group, benzofuranylene group, benzothiophenylene group, isobenzothiazolylene group, benzoxazorylene group, isobenzoxazolylene group, triazorylene group, tetrazolylene group, oxadiazollylene group, dibenzofuranylene group, Dibenzothiophenylene group, benzofuropyridinylene group, benzothienopyridinylene group, benzofuropyrimidinylene group, benzothienopyrimidinylene group, benzocarbazolylene group and dibenzocarbazolylene group; and deuterium, - F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt , C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, Heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spiro-fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, obalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group , oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, At least among isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, and imidazopyridinyl group One-substituted phenylene group, pentalenylene group, indenylene group, naphthylene group, azulenylene group, heptarenylene group, indaceneylene group, acenaphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group , phenalenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group, naphthaceneylene group, pichenylene group, perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, rubisenylene group , coronenylene group, obarenylene group, pyrrorylene group, thiophenylene group, furanylene group, imidazolylene group, pyrazolylene group, thiazorylene group, isothiazolylene group, oxazorylene group, isoxazorylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, pyridazinylene group, isoindolylene group group, indolylene group, indazolylene group, purinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, carbazorylene group, phenanthridinylene group, acridinylene group, Phenanthrolinylene group, phenazinylene group, benzimidazolylene group, benzofuranylene group, benzothiophenylene group, isobenzothiazolylene group, benzoxazorylene group, isobenzoxazorylene group, triazorylene group, tetrazolylene group, oxadiazo Rylene group, dibenzofuranylene group, dibenzothiophenylene group, benzofuropyridinylene group, benzothienopyridinylene group, benzofuropyrimidinylene group, benzothienopyrimidinylene group, benzocarbazolylene group and dibenzocarbazolylene group It is also selected from, but not limited to, a ren group;

As another example, in chemical formulas 1-1 to 1-5, L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f are independent of each other. phenylene group, naphthylene group, fluorenylene group, phenanthrenylene group, anthracenylene group, triphenylene group, pyrrolilene group, thiophenylene group, furanylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, indolylene group, quinolinylene group, Isoquinolinylene group, benzoquinolinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, carbazorylene group, phenanthridinylene group, benzimidazolylene group, benzofuranylene group, benzothiophenylene group, triazorylene group, dibenzofuranylene group , dibenzothiophenylene group, benzofuropyridinylene group, benzothienopyridinylene group, benzofuropyrimidinylene group and benzothienopyrimidinylene group; and hydrogen, deuterium, -F, -Cl, -Br, - I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ - C ₂₀ alkoxy group, phenyl group, naphthyl group, fluorenyl group, spiro-fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, pyrenyl group, chrysenyl group, pyridinyl group, pyrazinyl a phenylene group, a naphthylene group, a fluorenylene group, a phenanthrenylene group, an anthracenylene group substituted with at least one of a group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, and a carbazolyl group. , triphenylene group, pyrrorylene group, thiophenylene group, furanylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, indolylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group group, carbazorylene group, phenanthridinylene group, benzimidazolylene group, benzofuranylene group, benzothiophenylene group, triazorylene group, dibenzofuranylene group, dibenzothiophenylene group, benzofuropyridinylene group, benzothienopyridinylene group , a benzofuropyrimidinylene group, and a benzothienopyrimidinylene group, but are not limited thereto.

In chemical formulas 1-1 to 1-5, a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are also independently selected from 0, 1, 2, 3, and 4. Ru. In chemical formulas 1-1 to 1-5, when a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are 0, (L _11a ) _a11a to (L _11f ) _a11f , (L _12a ) _a12a ~ (L _12f ) _a12f , (L _13a ) _a13a ~ (L _13f ) _a13f , (L _14a ) _a14a ~ (L _14f ) _a14f , and (L _15a ) _a15a ~ (L _15f ) _a15f are each simple It is a combination. When a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are 2 or more, a plurality of L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a ~L _14f and L _15a ~L _15f may be the same or different.

For example, in chemical formulas 1-1 to 1-5, a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are also independently selected from 0, 1, and 2. , but not limited to.

In chemical formulas 1-1 to 1-5, R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, heavy Hydrogen, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero-fused polycyclic group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic group Hetero-fused polycyclic group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group a phenyl group, a biphenyl group, a terphenyl group, substituted with at least one selected from a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group , benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group, and monovalent non-aromatic hetero-fused polycyclic group; adjacent R _11a to R _11f , adjacent R _12a ~R _12f , adjacent R _13a ~R _13f , adjacent R _14a ~R _14f , and/or adjacent R _15a ~R _15f may form a saturated ring or an unsaturated ring, and may form a saturated ring or an unsaturated ring. It is not necessary to form a ring.

For example, in chemical formulas 1-1 to 1-5, R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen. , deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group , ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group a phenyl group, a biphenyl group, a terphenyl group, substituted with at least one selected from a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group , a benzofuropyrimidinyl group, a benzothienopyrimidinyl group; and a partial structure represented by any one of the following chemical formulas 2-1 to 2-17, but is not limited thereto.

In chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group , n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzo A phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, substituted with at least one selected from a furopyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group;
Any one carbon atom or nitrogen atom constituting Chemical Formulas 2-1 to 2-17 is a bonding site with an adjacent atom.

As used herein, the terms "represented by a substructure" and/or "containing a substructure" mean that the compound is represented by a substituent (e.g., a monovalent substituent or a divalent substituent) that includes a substituent. ), and may also include cases where the partial structure further has an additional substituent.

As another example, in chemical formulas 1-1 to 1-5, R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f are independent of each other. hydrogen, deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group ;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group and quinazolinyl group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, At least one selected from biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, and quinazolinyl group. phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group and It is also selected from, but not limited to, a quinazolinyl group; and a partial structure represented by any one of the following chemical formulas 2-1 to 2-17.

In chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group substituted with at least one selected from deuterium, -F, -Cl, -Br and -I, sec -butyl group and tert-butyl group; and phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group , quinoxalinyl group and quinazolinyl group;
Any one carbon atom or nitrogen atom constituting Chemical Formulas 2-1 to 2-17 is a bonding site with an adjacent atom.

In one embodiment, the first compound, the second compound, and the third compound have the following chemical formulas 1-11, 1-21 to 1-25, 1-31 to 1-33, 1-41, 1-42, and 1, respectively. -51, and the first compound, second compound and third compound are simultaneously represented by any one of the following chemical formulas 1-31 to 1-33. except when selected from azine compounds.

In chemical formulas 1-11, 1-21 to 1-25, 1-31 to 1-33, 1-41, 1-42 and 1-51,
X _11b to X _11f may independently have the configuration defined in Chemical Formula 1-1,
X _12b to X _12f may independently have the configuration defined in Chemical Formula 1-2,
X _13b to X _13f may independently have the configuration defined in Chemical Formula 1-3,
X _14b , X _14d and X _14e may independently have the configuration defined in Chemical Formula 1-4,
X _15b may have the configuration defined in Formula 1-5,
R _12g to R _12j and R _13g to R _13j each independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, deuterium, -F, -Cl, -Br, -I , methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n- Butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group , quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br and -I, substituted with at least one selected from methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, biphenyl group group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, selected from benzothienopyridinyl, benzofuropyrimidinyl and benzothienopyrimidinyl groups.

In one embodiment, the first compound may include a partial structure represented by any one of the following chemical formulas 2-1 to 2-17, but is not limited thereto.

In chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group substituted with at least one selected from deuterium, -F, -Cl, -Br and -I, sec -butyl group and tert-butyl group;
Phenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyrinyl group Dinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group , terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzo Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group substituted with at least one selected from thienopyridinyl group, benzofuropyrimidinyl group, and benzothienopyrimidinyl group , dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; is,
Any one carbon atom or nitrogen atom constituting Chemical Formulas 2-1 to 2-17 is a bonding site with an adjacent atom.

In one embodiment, the first compound is also selected from compounds H-1 to H-11 below, but is not limited thereto.

In one embodiment, the second compound is also selected from HB-1 to HB-3 below, but is not limited thereto.

In one embodiment, the third compound is also selected from, but not limited to, compounds ET-1 and ET-2 below.

In one embodiment, the first compound, the second compound, and the third compound are selected from azine compounds represented by any one of chemical formulas 1-1 to 1-3; The case where the compound and the third compound are simultaneously selected from the azine compounds represented by the chemical formulas 1-3 is excluded. Specifically, when the first compound, the second compound, and the third compound are simultaneously represented by the chemical formula 1-3, an organic light-emitting device with an electron transport property higher than necessary is provided, so that the lifetime is shortened. becomes low.

For example, the first compound is selected from azine compounds represented by either one of the chemical formulas 1-1 and 1-2, and the second compound and the third compound are independently selected from the azine compounds represented by the chemical formulas 1-1 and 1-2. and azine compounds represented by any one of 1-3, but are not limited thereto.

In another example, the second compound is selected from azine-based compounds represented by any one of Formulas 1-1 and 1-2, and the first compound and the third compound are independently of each other represented by Formula 1-1 and 1-2. It is also selected from azine compounds represented by either one of 1-2 and 1-3, but is not limited thereto.

As yet another example, the third compound is selected from azine compounds represented by either one of chemical formulas 1-1 and 1-2, and the first compound and the second compound are independently of each other represented by the chemical formula It is also selected from azine compounds represented by either one of 1-2 and 1-3, but is not limited thereto.

In one embodiment, the first compound, second compound and third compound may be different from each other.

In one embodiment, the organic layer includes an electron transport region interposed between the light emitting layer and the second electrode, the electron transport region includes a buffer layer and an electron transport layer, and the buffer layer includes the light emitting layer and the electron transport layer. The light-emitting layer may contain the first compound, the buffer layer may contain the second compound, and the electron transport layer may contain the third compound, but the invention is not limited thereto.

For example, the emissive layer can be in contact with a buffer layer, and the buffer layer can be in contact with an electron transport layer, but is not limited thereto.

In one embodiment, the first electrode may be an anode and the second electrode may be a cathode.

In one embodiment, the emissive layer may include an organometallic compound.

For example, organometallic compounds can emit phosphorescence, but are not limited thereto.

Specifically, the organometallic compound is also represented by the following chemical formula 401.
M (L ₄₀₁ ) _xc1 (L ₄₀₂ ) _xc2 ...401

In chemical formulas 401 and 402,
M is iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), rhodium ( Rh) and thulium (Tm);
L ₄₀₁ is selected from the ligands represented by the chemical formula 402, xc1 is 1, 2 or 3, and when xc1 is 2 or more, two or more L _401s may be the same or different from each other. Good too,
L ₄₀₂ is an organic ligand, xc2 is selected from an integer of 0 to 4, and when xc2 is 2 or more, two or more L ₄₀₂ may be the same or different from each other,
X ₄₀₁ to X ₄₀₄ are each independently nitrogen or carbon;
X ₄₀₁ and X ₄₀₃ are bonded via a single bond or a double bond, X ₄₀₂ and X ₄₀₄ are bonded via a single bond or a double bond,
A ₄₀₁ and A ₄₀₂ are independently of each other a C ₅ -C ₆₀ carbocyclic group or a C 1 -C 60 heterocyclic group,
X ₄₀₅ is a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q ₄₁₁ )-*', *-C(Q ₄₁₁ ) (Q ₄₁₂ )-*', *-C(Q ₄₁₁ )=C(Q ₄₁₂ )-*', *-C(Q ₄₁₁ )=*' or *=C(Q ₄₁₁ )=*', and Q ₄₁₁ and Q ₄₁₂ are hydrogen, deuterium, C ₁ -C ₂₀ alkyl group, C 1 -C 20 alkoxy group, phenyl group, biphenyl group, terphenyl group or naphthyl group,
X406 is a single bond, O or S,
R ₄₀₁ and R ₄₀₂ each independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, substituted or unsubstituted Substituted C ₁ -C ₂₀ alkyl group, substituted or unsubstituted C ₁ -C ₂₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic fused polycyclic group , substituted or unsubstituted monovalent non-aromatic heterofused polycyclic group, -Si(Q ₄₀₁ )(Q ₄₀₂ )(Q ₄₀₃ ), -N(Q ₄₀₁ )(Q ₄₀₂ ), -B(Q ₄₀₁ ) (Q ₄₀₂ ), -C(=O)(Q ₄₀₁ ), -S(=O) ₂ (Q ₄₀₁ ), and -P(=O)(Q ₄₀₁ )(Q ₄₀₂ ), and Q ₄₀₁ to Q ₄₀₃ is independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a C ₆ -C ₂₀ aryl group and a C ₁ -C ₂₀ heteroaryl group;
xc11 and xc12 are independently selected from integers from 0 to 10,
In chemical formula 402, * and *' are bonding sites with M in chemical formula 401.

According to one embodiment, in formula 402, A ₄₀₁ and A ₄₀₂ are independently of each other benzene, naphthalene, fluorene, spiro-bifluorene, indene, pyrrole, thiophene, furan, imidazole, pyrazole, thiazole, isothiazole, Oxazole, isoxazole, pyridine, pyrazine, pyrimidine, pyridazine, quinoline, isoquinoline, benzoquinoline, quinoxaline, quinazoline, carbazole, benzimidazole, benzofuran, benzothiophene, isobenzothiophene, benzoxazole, isobenzoxazole, triazole, tetrazole, oxadi The ring structure is selected from azole, triazine, dibenzofuran and dibenzothiophene.

According to other embodiments, in formula 402, i) X ₄₀₁ is nitrogen and X ₄₀₂ is carbon, or ii) both X ₄₀₁ and X ₄₀₂ are nitrogen.

According to yet other embodiments, in formula 402, R ₄₀₁ and R ₄₀₂ independently of each other are
Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group and C ₁ -C ₂₀ alkoxy group ;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, phenyl group, naphthyl group, cyclopentyl group, cyclohexyl group, adamantanyl group, norbornanyl group and a C ₁ -C ₂₀ alkyl group and a C ₁ -C ₂₀ alkoxy group substituted with at least one selected from a norbornenyl group;
Cyclopentyl group, cyclohexyl group, adamantanyl group, norbornanyl group, norbornenyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group group, quinoxalinyl group, quinazolinyl group, carbazolyl group, dibenzofuranyl group and dibenzothiophenyl group;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, adamantanyl group, norbornanyl group, norbornenyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group , cyclopentyl group, cyclohexyl group, adamantanyl group, norbornanyl group, norbornenyl group, phenyl group, biphenyl group, substituted with at least one selected from , quinoxalinyl group, quinazolinyl group, carbazolyl group, dibenzofuranyl group, and dibenzothiophenyl group group, terphenyl group, naphthyl group, fluorenyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, carbazolyl group, dibenzofuranyl group and dibenzothiophenyl group group; and -Si(Q ₄₀₁ )(Q ₄₀₂ )(Q ₄₀₃ ), -N(Q ₄₀₁ )(Q ₄₀₂ ), -B(Q ₄₀₁ )(Q ₄₀₂ ), -C(=O)(Q ₄₀₁ ) , -S(=O) ₂ (Q ₄₀₁ ) and -P(=O)(Q ₄₀₁ )(Q ₄₀₂ );
Q ₄₀₁ to Q ₄₀₃ are also independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group and a naphthyl group, but are not limited thereto. do not have.

According to still another embodiment, in chemical formula 401, when xc1 is 2 or more, in 2 or more L ₄₀₁ , two A ₄₀₁ may be bonded to each other via X ₄₀₇ , which is a linking group. , may not be combined. Further, the two A _402s may or may not be bonded to each other via the linking group X ₄₀₈ (see compounds PD1 to PD4 and PD7 below). X ₄₀₇ and X ₄₀₈ are each independently a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q ₄₁₃ )-*' , *-C(Q ₄₁₃ )(Q ₄₁₄ )-*' or *-C(Q ₄₁₃ )=C(Q ₄₁₄ )-*' (where Q ₄₁₃ and Q ₄₁₄ independently represent hydrogen, deuterium, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group or naphthyl group), but are not limited thereto.

In Formula 401, L ₄₀₂ may be any monovalent, divalent, or trivalent organic ligand. For example, L ₄₀₂ can include halogens, diketones (e.g. acetylacetonate), carboxylic acids (e.g. picolinate), -C(=O), isonitriles, -CN and phosphoros (e.g. phosphine, phosphite). )), but are not limited to them.

Alternatively, the organometallic compound may be selected from, for example, the following compounds PD1 to PD27, but is not limited thereto.

According to another embodiment, a substrate partitioned into a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region;
a plurality of first electrodes arranged in each of a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region of the substrate;
a second electrode facing the plurality of first electrodes;
an organic layer interposed between a plurality of first electrodes and a plurality of second electrodes and including a light emitting layer;
The organic layer includes a first compound, a second compound, and a third compound,
The first compound, the second compound, and the third compound are each selected from azine compounds represented by any one of chemical formulas 1-1 to 1-5; An organic light emitting device is provided in which the three compounds are selected from azine compounds represented by Formulas 1-3 at the same time. Here, the description of the azine compound represented by any one of Chemical Formulas 1-1 to 1-5 is as described above.

In one embodiment, the first compound, the second compound, and the third compound are selected from azine compounds represented by any one of chemical formulas 1-1 to 1-3, but are not limited thereto. It's not something you can do.

In one embodiment, the organic layer includes an electron transport region interposed between the emissive layer and the second electrode, the electron transport region includes a buffer layer and an electron transport layer, and the buffer layer includes the emissive layer and the electron transport layer. The light-emitting layer may contain the first compound, the buffer layer may contain the second compound, and the electron transport layer may contain the third compound, but the invention is not limited thereto.

For example, the emissive layer can be in contact with a buffer layer, and the buffer layer can be in contact with an electron transport layer, but is not limited thereto.

In one embodiment, the plurality of first electrodes may be an anode and the second electrode may be a cathode, but is not limited thereto.

In one embodiment, the emissive layer may include an organometallic compound.

For example, organometallic compounds can emit phosphorescence, but are not limited thereto.

Specifically, the organometallic compound is also represented by chemical formula 401. The description of the organometallic compound represented by chemical formula 401 is as described above.

In one embodiment, the light emitting layer includes a first light emitting layer, a second light emitting layer, and a third light emitting layer disposed in a first subpixel region, a second subpixel region, and a third subpixel region of the substrate, respectively; At least one of the first light emitting layer and the second light emitting layer may contain a first compound and an organometallic compound, but is not limited thereto.

For example, the first emissive layer may emit red light, the second emissive layer may emit green light, and the third emissive layer may emit blue light, but is not limited thereto. .
In one embodiment, the first compound, second compound and third compound may be different from each other.

By including the first compound, the second compound, and the third compound, the organic light emitting device can have low driving voltage and high efficiency. In particular, the organic light emitting device is excluded when the first compound, the second compound and the third compound simultaneously contain a triazine moiety, thereby providing an organic light emitting device with a long lifetime.

As used herein, the term "organic layer" refers to all single and/or multiple layers interposed between a first electrode and a second electrode in an organic light emitting device. The substances contained in the "organic layer" are not limited to organic substances.

[Description of Figure 1]
FIG. 1 schematically illustrates a cross-sectional view of an organic light emitting device 10 according to an embodiment of the present invention. The organic light emitting device 10 includes a first electrode 110, an organic layer 150, and a second electrode 190.

Hereinafter, with reference to FIG. 1, the structure and manufacturing method of an organic light emitting device 10 according to an embodiment of the present invention will be described.

[First electrode 110]
A substrate may be additionally disposed below the first electrode 110 or above the second electrode 190 in FIG. As the substrate, a glass substrate or a plastic substrate having excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and waterproofness can be used.

The first electrode 110 may also be formed, for example, by providing a first electrode material on the substrate using a deposition method, a sputtering method, or the like. When the first electrode 110 is an anode, the material for the first electrode is also selected from a material having a high work function so that hole injection is easy.

The first electrode 110 may be a reflective electrode, a transflective electrode, or a transmissive electrode. In order to form the first electrode 110, which is a transmission electrode, the first electrode material includes indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO ₂ ), zinc oxide (ZnO), and It may be selected from any combination thereof, but is not limited thereto. Alternatively, in order to form the first electrode 110 that is a transflective electrode or a reflective electrode, the first electrode material may be magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al- Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), and any combination thereof, but are not limited thereto.

The first electrode 110 may have a single layer structure, which is a single layer, or a multilayer structure, which has a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO/Ag/ITO, but is not limited thereto.

[Organic layer 150]
An organic layer 150 is disposed above the first electrode 110. Organic layer 150 includes a light emitting layer.

The organic layer 150 includes a hole transport region interposed between the first electrode 110 and the light emitting layer, and an electron transport region interposed between the light emitting layer and the second electrode 190. ) may further be included.

[Hole transport region in organic layer 150]
The hole transport region has i) a single layer structure consisting of a single layer made of a single substance, ii) a single layer structure consisting of a single layer made of a plurality of mutually different substances, or iii) a plurality of mutually different substances. It can have a multilayer structure having multiple layers of materials.

The hole transport region may include at least one layer selected from a hole injection layer (HIL), a hole transport layer (HTL), a luminescence auxiliary layer, and an electron blocking layer (HBL).

For example, the hole transport region may have a single layer structure consisting of a single layer made of a plurality of different materials, or may have a hole injection layer/hole transport layer stacked in order starting from the first electrode 110. It may have a multilayer structure of injection layer/hole transport layer/emission auxiliary layer, hole injection layer/emission auxiliary layer, hole transport layer/emission auxiliary layer, or hole injection layer/hole transport layer/electron blocking layer. Yes, but not limited to these.

Hole transport regions include m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated-NPB, TAPC, HMTPD, 4,4' , 4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline/dodecylbenzenesulfonic acid (Pani/DBSA), poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT) /PSS), polyaniline/camphorsulfonic acid (Pani/CSA), polyaniline/poly(4-styrene sulfonate) (PANI/PSS), a compound represented by the following chemical formula 201, and a compound represented by the following chemical formula 202 may include at least one.

In chemical formulas 201 and 202,
L ₂₀₁ to L ₂₀₄ each independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenylene group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted or unsubstituted C ₆ -C ₆₀ arylene group, substituted or unsubstituted C 1 -C 60 heteroarylene group, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene group selected from a substituted divalent non-aromatic fused polycyclic group, and a substituted or unsubstituted divalent non-aromatic hetero-fused polycyclic group,
L ₂₀₅ is *-O-*', *-S-*', *-N(Q ₂₀₁ )-*', substituted or unsubstituted C ₁ -C ₂₀ alkylene group, substituted or unsubstituted C ₂ - C ₂₀ alkenylene group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenylene group, substituted or Unsubstituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted or unsubstituted C ₆ -C ₆₀ arylene group, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene group, substituted or unsubstituted divalent non-aromatic selected from group fused polycyclic groups, and substituted or unsubstituted divalent non-aromatic heterofused polycyclic groups,
xa1 to xa4 are independently selected from integers from 0 to 3,
xa5 is selected from an integer from 1 to 10,
R ₂₀₁ to R ₂₀₄ and Q ₂₀₁ each independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, or a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group. C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group , a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic fused polycyclic group, and a substituted or unsubstituted Also selected from monovalent non-aromatic heterofused polycyclic groups.

For example, in Formula 202, R ₂₀₁ and R ₂₀₂ may optionally be bonded to each other via a single bond, a dimethyl-methylene group or a diphenyl-methylene group, and R ₂₀₃ and R ₂₀₄ may optionally be They may be bonded to each other via a single bond, a dimethyl-methylene group or a diphenyl-methylene group.

According to one embodiment, in chemical formulas 201 and 202,
L ₂₀₁ to L ₂₀₅ are mutually independent,
Phenylene group, pentalenylene group, indenylene group, naphthylene group, azulenylene group, heptarenylene group, indasenylene group, acenaphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenalenylene group, phenanthrenylene group Ren group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group, naphthaceneylene group, picenylene group, perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, rubisenylene group, coronenylene group, obarenylene group, Thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilyl group Rylene group and pyridinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, phenyl group substituted with C ₁ -C ₁₀ alkyl group, -F phenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group , phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, obalenyl group, thiophenyl group group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl phenylene group, pentalenylene group, indenylene group, naphthylene group, substituted with at least one selected from group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), and -N(Q ₃₁ )(Q ₃₂ ) group, azulenylene group, heptarenylene group, indasenylene group, acenaphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenalenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group , triphenylene group, pyrenylene group, chrysenylene group, naphthacenylene group, picenylene group, perylene group, pentaphenylene group, hexasenylene group, pentaceneylene group, rubisenylene group, coronenylene group, obarenylene group, thiophenylene group, furanylene group, carbazorylene group, selected from indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group and pyridinylene group;
Q ₃₁ to Q ₃₃ are also independently selected from each other from C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

According to other embodiments, xa1-xa4 may be 0, 1 or 2 independently of each other.

According to yet other embodiments, xa5 may be 1, 2, 3 or 4.
According to yet another embodiment, R ₂₀₁ to R ₂₀₄ and Q ₂₀₁ are each independently a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, Indacenyl group, acenaphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, obalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, Dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group and pyridinyl group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group , biphenyl group, terphenyl group, phenyl group substituted with C ₁ -C ₁₀ alkyl group, phenyl group substituted with -F, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group , perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, obalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group , dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), and -N(Q ₃₁ )(Q ₃₂ ) substituted with at least one selected from phenyl group, biphenyl group, terphenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spiro- Bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group , hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzo also selected from a carbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group and a pyridinyl group;
The explanation of Q ₃₁ to Q ₃₃ is referred to as described herein.

According to still other embodiments, in Formula 201, at least one of R ₂₀₁ to R ₂₀₃ independently of each other,
Fluorenyl group, spiro-bifluorenyl group, carbazolyl group, dibenzofuranyl group and dibenzothiophenyl group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, C selected from phenyl group substituted with _{1- C10} alkyl group, phenyl group substituted with -F, naphthyl group, fluorenyl group, spiro-bifluorenyl group, carbazolyl group, dibenzofuranyl group, and dibenzothiophenyl group Also selected, but not limited to, are at least one substituted fluorenyl group, spiro-bifluorenyl group, carbazolyl group, dibenzofuranyl group and dibenzothiophenyl group.

According to still other embodiments, in Formula 202, i) R ₂₀₁ and R ₂₀₂ are bonded to each other via a single bond, and/or ii) R ₂₀₃ and R ₂₀₄ are bonded to each other via a single bond. You may.

According to still other embodiments, in formula 202, at least one of R ₂₀₁ to R ₂₀₄ is
Carbazolyl group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, phenyl group substituted with C ₁ -C ₁₀ alkyl group, phenyl group substituted with -F a carbazolyl group substituted with at least one selected from a phenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group; It is not limited to.

The compound represented by the chemical formula 201 is also represented by the following chemical formula 201A.

For example, the compound represented by the chemical formula 201 is also represented by the following chemical formula 201A(1), but is not limited thereto.

As yet another example, the compound represented by the chemical formula 201 is also represented by the following chemical formula 201A-1, but is not limited thereto.

On the other hand, the compound represented by the chemical formula 202 is also represented by the following chemical formula 202A.

According to yet another embodiment, the compound represented by Formula 202 is also represented by Formula 202A-1 below.

With chemical formulas 201A, 201A(1), 201A-1, 202A and 202A-1,
The description of L ₂₀₁ to L ₂₀₃ , xa1 to xa3, xa5, and R ₂₀₂ to R ₂₀₄ is as described herein,
The description of R ₂₁₁ and R ₂₁₂ herein refers to the description of R ₂₀₃ ,
R ₂₁₃ to R ₂₁₇ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ - Substituted with C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, C ₁ -C ₁₀ alkyl group -F-substituted phenyl group, -F-substituted phenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptalenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzo Fluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, Coronenyl group, obalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group , dibenzosilolyl group and pyridinyl group.

The hole transport region may contain at least one compound selected from the following compounds HT1 to HT40, but is not limited thereto.

The thickness of the hole transport region may be from about 10 nm to about 1,000 nm, such as from about 10 nm to about 1000 nm. When the hole transport region includes a hole injection layer and at least one hole transport layer, the thickness of the hole injection layer is from about 10 nm to about 900 nm, such as from about 10 nm to about 100 nm, and the thickness of the hole transport layer is from about 10 nm to about 900 nm, The thickness may be from about 5 nm to about 200 nm, such as from about 10 nm to about 150 nm. When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer satisfy the above-mentioned ranges, satisfactory hole transport characteristics can be obtained without a substantial increase in driving voltage.

The light emitting auxiliary layer is a layer that compensates for the optical resonance distance depending on the wavelength of light emitted by the light emitting layer and increases light emission efficiency, and the electron blocking layer prevents electron injection from the electron transport region. This is the layer that performs the role of The emission auxiliary layer and the electron blocking layer may contain the materials described above.

[p-dopant]
In addition to the above-mentioned materials, the hole transport region may further include a charge generation material to improve conductivity. The charge generating material may be uniformly or non-uniformly distributed within the hole transport region.

The charge generating material may be, for example, a p-dopant.

According to one embodiment, the LUMO (lowest unoccupied molecular orbital) of the p-dopant may be −3.5 eV or less.

The p-dopant may include at least one selected from quinone derivatives, metal oxides, and cyano group-containing compounds, but is not limited thereto.

For example, p-dopants can be quinone derivatives such as tetracyanoquinodimethane (TCNQ) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ). ;
metal oxides such as tungsten oxide and molybdenum oxide;
It may contain at least one selected from 1,4,5,8,9,12-hexaazatriphenylene-hexacarbonitrile (HAT-CN); and a compound represented by the following chemical formula 221; It is not limited.

In chemical formula 221,
R ₂₂₁ to R ₂₂₃ each independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C 1 -C 60 heteroaryl group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group selected from a substituted monovalent non-aromatic fused polycyclic group and a substituted or unsubstituted monovalent non-aromatic hetero fused polycyclic group, at least one of R ₂₂₁ to R ₂₂₃ is a cyano group , -F, -Cl, -Br, -I, C ₁ -C ₂₀ alkyl group substituted with -F, C ₁ -C ₂₀ alkyl group substituted with -Cl, C ₁ - substituted with -Br It has at least one substituent selected from a C ₂₀ alkyl group and a C ₁ -C ₂₀ alkyl group substituted with -I.

[Light-emitting layer in organic layer 150]
When the organic light emitting device 10 is a full color organic light emitting device, the light emitting layer is patterned into a red light emitting layer, a green light emitting layer, and a blue light emitting layer for each subpixel. Alternatively, the light-emitting layer has a structure in which two or more layers selected from a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer are stacked in contact with each other or separated from each other, or a red light-emitting material, a green light-emitting material, and a blue light-emitting layer are laminated together. It has a structure in which two or more materials selected from blue light emitting materials are mixed without layer division, and can emit white light.

The emissive layer may include a host and a dopant. It may contain at least one of a phosphorescent dopant and a fluorescent dopant.

In the emissive layer, the content of dopant is also generally selected to range from about 0.01 to about 15 parts by weight based on about 100 parts by weight of the host, but is not limited thereto.

The thickness of the emissive layer may be between about 10 nm and about 100 nm, such as between about 20 nm and about 60 nm. When the thickness of the light emitting layer satisfies the above range, excellent light emitting characteristics can be exhibited without a substantial increase in driving voltage.

[Host in luminescent layer]
The host may be the first compound. Alternatively, the host may further include a compound represented by the following chemical formula 301.
[Ar ₃₀₁ ] _xb11 - [(L ₃₀₁ ) _xb1 -R ₃₀₁ ] _xb21 ...301

In chemical formula 301,
Ar ₃₀₁ is a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group, or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group,
xb11 is 1, 2 or 3,
L ₃₀₁ is a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C 3 -C 10 cycloalkenylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, Substituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted or unsubstituted C ₆ -C ₆₀ arylene group, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene group, substituted or unsubstituted divalent non-aromatic group selected from a fused polycyclic group and a substituted or unsubstituted divalent non-aromatic heterofused polycyclic group,
xb1 is selected from an integer from 0 to 5,
R ₃₀₁ is deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, Substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cyclo Alkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group Substituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group , substituted or unsubstituted monovalent non-aromatic fused polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero fused polycyclic group, -Si(Q ₃₀₁ )(Q ₃₀₂ )(Q ₃₀₃ ), - N(Q ₃₀₁ )(Q ₃₀₂ ), -B(Q ₃₀₁ )(Q ₃₀₂ ), -C(=O)(Q ₃₀₁ ), -S(=O) ₂ (Q ₃₀₁ ), and -P(=O )(Q ₃₀₁ )(Q ₃₀₂ ),
xb21 is selected from an integer from 1 to 5,
Q ₃₀₁ to Q ₃₀₃ are also independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group, but are limited thereto. It is not something that will be done.

According to one embodiment, in formula 301, Ar ₃₀₁ is
Naphthalene group, fluorene group, spiro-bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphthacene group, picene group, perylene group, pentaphene group group, indenoanthracene group, dibenzofuran group and dibenzothiophene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and -P(=O)(Q ₃₁ )(Q ₃₂ ) substituted with at least one selected from naphthalene group, fluorene group, spiro-bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, selected from chrysene group, naphthacene group, picene group, perylene group, pentaphene group, indenoanthracene group, dibenzofuran group and dibenzothiophene group;
Q ₃₁ to Q ₃₃ are also independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group, but are limited thereto. It is not something that will be done.

In chemical formula 301, when xb11 is 2 or more, two or more Ar ₃₀₁ may be bonded to each other via a single bond.

According to other embodiments, the compound represented by Formula 301 is also represented by Formula 301-1 or 301-2 below:

In chemical formulas 301-1 to 301-2,
A ₃₀₁ to A ₃₀₄ each independently represent a benzene group, a naphthalene group, a phenanthrene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a pyridine group, a pyrimidine group, an indene group, a fluorene group, a spiro-bifluorene group, Benzofluorene group, dibenzofluorene group, indole group, carbazole group, benzocarbazole group, dibenzocarbazole group, furan group, benzofuran group, dibenzofuran group, naphthofuran group, benzonaphthofuran group, dinaphthofuran group, thiophene group, benzothiophene group, dibenzo selected from thiophene group, naphthothiophene group, benzonaphthothiophene group and dinaphthothiophene group,
X ₃₀₁ is O, S or N-[(L ₃₀₄ ) _xb4 -R ₃₀₄ ],
R ₃₁₁ to R ₃₁₄ each independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ - C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ) , -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and -P(=O)(Q ₃₁ )(Q ₃₂ ) selected,
xb22 and xb23 are independently 0, 1 or 2,
The description of L ₃₀₁ , xb1, R ₃₀₁ , and Q ₃₁ to Q ₃₃ is as described herein,
The descriptions of L ₃₀₂ to L ₃₀₄ refer to the description of L ₃₀₁ independently of each other,
The descriptions of xb2 to xb4 refer to the description of xb1 independently of each other,
The descriptions of R ₃₀₂ to R ₃₀₄ refer to the description of R ₃₀₁ independently of each other.

For example, in chemical formulas 301, 301-1 and 301-2, L ₃₀₁ to L ₃₀₄ are independently of each other,
Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group , perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, Benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group, pyridinylene group, imidazolylene group, pyrazolylene group, thiazorylene group, isothiazolylene group, oxazorylene group, isoxazorylene group, thiadiazolylene group, oxadiazorylene group, pyrazinylene group, pyrimidinylene group group, pyridazinylene group, triazinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, Phenazinylene group, benzimidazolylene group, isobenzothiazolylene group, benzoxazorylene group, isobenzoxazolylene group, triazorylene group, tetrazolylene group, imidazopyridinylene group, imidazopyrimidinylene group and azacarbazolylene group groups; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group , benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group , pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and a phenylene group, a naphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, substituted with at least one selected from -P(=O)(Q ₃₁ )(Q ₃₂ ) Nylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group, perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, thiophenylene group, furanylene group, carbazorylene group , indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group, pyridinylene group, imidazolylene group, Pyrazolylene group, thiazorylene group, isothiazolylene group, oxazolylene group, isoxazolylene group, thiadiazolylene group, oxadiazorylene group, pyrazinylene group, pyrimidinylene group, pyridazinylene group, triazinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, Naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, phenazinylene group, benzimidazolylene group, isobenzothiazolylene group, benzoxazorylene group, isobenzo selected from an oxazorylene group, a triazorylene group, a tetrazolylene group, an imidazopyridinylene group, an imidazopyrimidinylene group, and an azacarbazolylene group;
For explanations of Q ₃₁ to Q ₃₃ , reference may be made to the description herein.

As another example, in chemical formulas 301, 301-1 and 301-2, R ₃₀₁ to R ₃₀₄ are independently of each other,
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, Chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzo Carbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, Isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group; and deuterium, -F, -Cl, - Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, Dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, Benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )( Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and -P(=O)(Q ₃₁ )(Q ₃₂ ), a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, Anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothio Phenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group , thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and selected from: an azacarbazolyl group;
For explanations of Q ₃₁ to Q ₃₃ , reference may be made to the description herein.

As yet another example, the host may further include an alkaline earth metal complex. For example, the host is also selected from Be complexes (eg compound H55 below), Mg complexes and Zn complexes.

The host is 9,10-di(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthalen-2-yl)anthracene (MADN), 9,10-di-(2-naphthyl) -2-t-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-di-9-carbazolylbenzene (mCP), 1,3,5-tri(carbazol-9-yl)benzene (TCP), bis(4-(9H-carbazol-9-yl)phenyl)diphenylsilane (BCPDS), 4-(1-(4-(diphenyl) It may further contain, but is not limited to, at least one selected from amino)phenyl)cyclohexyl)phenyl)diphenyl-phosphine oxide (POPCPA) and the following compounds H1 to H55.

[Fluorescent dopant in luminescent layer]
The fluorescent dopant may include an arylamine compound or a styrylamine compound.

The fluorescent dopant may include a compound represented by the following chemical formula 501:

In chemical formula 501,
Ar ₅₀₁ is a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group, or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group,
L ₅₀₁ to L ₅₀₃ each independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenylene group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted or unsubstituted C ₆ -C ₆₀ arylene group, substituted or unsubstituted C 1 -C 60 heteroarylene group, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene group selected from a substituted divalent non-aromatic fused polycyclic group, and a substituted or unsubstituted divalent non-aromatic hetero-fused polycyclic group,
xd1 to xd3 are independently selected from integers from 0 to 3,
R ₅₀₁ and R ₅₀₂ each independently represent a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted A substituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent non-aromatic fused polycyclic group, and a substituted or unsubstituted monovalent non-aromatic polycyclic group selected from aromatic heterofused polycyclic groups,
xd4 is selected from an integer from 1 to 6.

According to one embodiment, in formula 501, Ar ₅₀₁ is
Naphthalene group, hepthalene group, fluorene group, spiro-bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphthacene group, picene group, perylene group group, pentaphene group, indenoanthracene group and indenophenanthrene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ - _C20 alkyl group, C1 _{- C20} alkoxy group, phenyl group, biphenyl group, terphenyl group, and naphthyl group, substituted with at least one selected from naphthalene group, hepthalene group, fluorene group, spiro- Bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphthacene group, picene group, perylene group, pentaphene group, indenoanthracene group and indenoanthracene group Nophenanthrene group;

According to other embodiments, in formula 501, L ₅₀₁ -L ₅₀₃ are independently of each other,
Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group , perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, Benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group, pyridinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group , hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group Nyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group , substituted with at least one selected from benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, and pyridinyl group, Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group , perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, It is also selected from a benzocarbazolylene group, a dibenzocarbazolylene group, a dibenzosilorylene group, and a pyridinylene group.

According to yet other embodiments, in formula 501, R ₅₀₁ and R ₅₀₂ are independently of each other:
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, Chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzo Carbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group and pyridinyl group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, Hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group and -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), substituted with at least one selected from phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, Anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothio selected from phenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group and pyridinyl group;
Q ₃₁ to Q ₃₃ may be selected from C ₁ -C ₁₀ alkyl groups, C ₁ -C ₁₀ alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups and naphthyl groups.

According to still other embodiments, in formula 501, xd4 may be 2, but is not limited thereto.

For example, the fluorescent dopant may also be selected from the following compounds FD1-FD22.

Alternatively, the fluorescent dopant may be selected from the following compounds, but is not limited thereto.

[Electron transport region in organic layer 150]
The electron transport region has i) a single layer structure consisting of a single layer made of a single substance, ii) a single layer structure consisting of a single layer made of a plurality of mutually different substances, or iii) a plurality of mutually different substances. It can have a multilayer structure having multiple layers consisting of.

The electron transport region may include, but is not limited to, at least one layer selected from a buffer layer, a hole blocking layer, an electron conditioning layer, an electron transport layer (ETL), and an electron injection layer.

For example, the electron transport region includes an electron transport layer/electron injection layer, a hole blocking layer/electron transport layer/electron injection layer, an electron regulating layer/electron transport layer/electron injection layer, or a buffer layer/ It can have a structure such as an electron transport layer/electron injection layer, but is not limited thereto.

The electron transport region (for example, in the electron transport region, the buffer layer, hole blocking layer, electron control layer, or electron transport layer) contains at least one π electron-deficient nitrogen-containing ring in addition to the second compound and the third compound. It may further include a non-metal-containing compound.

"π-electron-deficient nitrogen-containing ring" refers to a C ₁ -C ₆₀ heterocyclic group that is a ring-forming moiety and has at least one *-N=*' moiety.

For example, a "π electron-deficient nitrogen-containing ring" is i) a 5- to 7-membered heteromonocyclic group having at least one *-N=*' moiety, or ii) at least one *-N =*' is a heteropolycyclic group in which two or more of the 5- to 7-membered heteromonocyclic groups having a moiety are fused to each other, or iii) at least one *-N=*' moiety is It may also be a heteropolycyclic group in which at least one of the 5- to 7-membered heteromonocyclic groups and at least one C ₅ -C ₆₀ carbocyclic group are fused to each other.

Specific examples of the π-electron-deficient nitrogen-containing ring include an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an indazolyl group, a purinyl group, and a quinolinyl group. group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group , benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, thiadiazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, etc. It is not limited to.

For example, the electron transport region may further include a compound represented by the following chemical formula 601 in addition to the second compound and the third compound.
[Ar ₆₀₁ ] _xe11 - [(L ₆₀₁ ) _xe1 -R ₆₀₁ ] _xe21 ...601

In chemical formula 601,
Ar ₆₀₁ is a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group, or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group,
xe11 is 1, 2 or 3,
L ₆₀₁ is a substituted or unsubstituted C ₃ -C ₁₀ cycloalkylene group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted or unsubstituted C 3 -C 10 cycloalkenylene group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenylene group, Substituted C ₁ -C ₁₀ heterocycloalkenylene group, substituted or unsubstituted C ₆ -C ₆₀ arylene group, substituted or unsubstituted C ₁ -C ₆₀ heteroarylene group, substituted or unsubstituted divalent non-aromatic group selected from a fused polycyclic group and a substituted or unsubstituted divalent non-aromatic heterofused polycyclic group,
xe1 is selected from an integer from 0 to 5,
R ₆₀₁ is a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, Substituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic fused polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero fused polycyclic group, - Si(Q ₆₀₁ )(Q ₆₀₂ )(Q ₆₀₃ ), -C(=O)(Q ₆₀₁ ), -S(=O) ₂ (Q ₆₀₁ ), and -P(=O)(Q ₆₀₁ )(Q ₆₀₂ ),
Q ₆₀₁ to Q ₆₀₃ are each independently a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group or a naphthyl group,
xe21 is selected from integers from 1 to 5.

According to one embodiment, at least one of xe11 Ar ₆₀₁ and xe21 R ₆₀₁ may include a π electron-deficient nitrogen-containing ring as described above.

According to one embodiment, in formula 601, ring Ar ₆₀₁ is
Phenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group group, picenyl group, perylenyl group, pentaphenyl group, indenoanthracenyl group, dibenzofuranyl group, dibenzothiophenyl group, carbazolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, Pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group , phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, thiadiazolyl group, imidazopyryl group Dinyl group, imidazopyrimidinyl group and azacarbazolyl group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ Alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -S(=O) ₂ (Q ₃₁ ) and phenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, substituted with at least one selected from -P(=O)(Q ₃₁ )(Q ₃₂ ) Nyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, indenoanthracenyl group, dibenzofuranyl group , dibenzothiophenyl group, carbazolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group , benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group isol group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, thiadiazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group;
Q ₃₁ to Q ₃₃ are also independently selected from each other from C ₁ -C ₁₀ alkyl, C ₁ -C ₁₀ alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

In the chemical formula 601, when xe11 is 2 or more, two or more Ar ₆₀₁ may be bonded to each other via a single bond.

According to other embodiments, Ar ₆₀₁ in formula 601 may be an anthracene group. According to yet another embodiment, the compound represented by 601 may be represented by the following chemical formula 601-1.

In chemical formula 601-1,
X ₆₁₄ is N or C (R ₆₁₄ ), X ₆₁₅ is N or C (R ₆₁₅ ), X ₆₁₆ is N or C (R ₆₁₆ ), and at least one of X ₆₁₄ to X ₆₁₆ One is N,
L ₆₁₁ to L ₆₁₃ refer to the description of L ₆₀₁ independently of each other,
xe611 to xe613 refer to the explanation of xe1 independently of each other,
R ₆₁₁ to R ₆₁₃ independently refer to the description of R ₆₀₁ ,
R ₆₁₄ to R ₆₁₆ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ - Also selected from C ₂₀ alkyl, C ₁ -C ₂₀ alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

According to one embodiment, in formulas 601 and 601-1, L ₆₀₁ and L ₆₁₁ to L ₆₁₃ independently of each other are
Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group , perylene group, pentaphenylene group, hexacenylene group, pentaceneylene group, thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, Benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group, pyridinylene group, imidazolylene group, pyrazolylene group, thiazorylene group, isothiazolylene group, oxazorylene group, isoxazorylene group, thiadiazolylene group, oxadiazorylene group, pyrazinylene group, pyrimidinylene group group, pyridazinylene group, triazinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, Phenazinylene group, benzimidazolylene group, isobenzothiazolylene group, benzoxazorylene group, isobenzoxazolylene group, triazorylene group, tetrazolylene group, imidazopyridinylene group, imidazopyrimidinylene group and azacarbazolylene group groups; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group , benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group , pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group. In addition, a phenylene group, a naphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylene group, a pyrenylene group, Chrysenylene group, perylene group, pentaphenylene group, hexasenylene group, pentathenylene group, thiophenylene group, furanylene group, carbazorylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilorylene group, pyridinylene group, imidazolylene group, pyrazolylene group, thiazolylene group, isothiazolylene group, oxazolilene group, isoxazorylene group, thiadiazolylene group, oxadiazorylene group, pyrazinylene group , pyrimidinylene group, pyridazinylene group, triazinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group group, phenazinylene group, benzimidazolylene group, isobenzothiazolylene group, benzoxazolylene group, isobenzoxazolylene group, triazorylene group, tetrazolylene group, imidazopyridinylene group, imidazopyrimidinylene group and azacarba It is also selected from, but not limited to, zolylene groups.

According to other embodiments, in formulas 601 and 601-1, xe1 and xe611-xe613 may be 0, 1, or 2, independently of each other.

According to still other embodiments, in Formulas 601 and 601-1, R ₆₀₁ and R ₆₁₁ to R ₆₁₃ independently of each other are
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, Chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzo Carbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, Isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarba Zolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group , triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, iso Phenyl substituted with at least one selected from benzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarba Zolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group , triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, iso Benzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group and azacarbazolyl group; and -S(=O) ₂ (Q ₆₀₁ ) and -P(=O)(Q ₆₀₁ )(Q ₆₀₂ );
Descriptions of Q ₆₀₁ and Q ₆₀₂ are referred to herein.

In addition to the second compound and the third compound, the electron transport region may further include at least one compound selected from the following compounds ET1 to ET36, but is not limited thereto.

Alternatively, the electron transport region may include 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, 3-( biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ), NTAZ and diphenyl(4-(triphenylsilyl)phenyl)-phosphine It may contain at least one compound selected from oxides (TSPO1).

The thickness of the buffer layer, hole blocking layer or electron modulating layer, independently of each other, may be from about 2 nm to about 100 nm, such as from about 3 nm to about 30 nm. When the thickness of the buffer layer, hole blocking layer, or electron regulating layer satisfies the above range, excellent hole blocking properties or electron regulating properties can be obtained without a substantial increase in driving voltage.

The thickness of the electron transport layer may be from about 10 nm to about 100 nm, such as from about 15 nm to about 50 nm. When the thickness of the electron transport layer satisfies the above range, satisfactory electron transport characteristics can be obtained without a substantial increase in driving voltage.

The electron transport region (for example, the electron transport layer in the electron transport region) may further contain a metal-containing material in addition to the above-mentioned materials.

The metal-containing substance may include at least one selected from alkali metal complexes and alkaline earth metal complexes. The metal ions of the alkali metal complex are also selected from Li ions, Na ions, K ions, Rb ions and Cs ions, and the metal ions of the alkaline earth metal complexes are selected from Be ions, Mg ions, Ca ions, Sr ions and Ba ions. Also selected from ions. The ligands coordinated to the metal ions of the alkali metal complexes and alkaline earth metal complexes are, independently of each other, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole. , hydroxydiphenyloxadiazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline and cyclopentadiene, but are not limited thereto.

For example, the metal-containing material may include a Li complex. The Li complex may include, for example, the following compound ET-D1 (lithium quinolate (LiQ)) or ET-D2.

The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 190. The electron injection layer may be in direct contact with the second electrode 190.

The electron injection layer has i) a single layer structure consisting of a single layer made of a single substance, ii) a single layer structure consisting of a single layer made of a plurality of mutually different substances, or iii) a plurality of mutually different substances. It can have a multilayer structure having multiple layers consisting of.

The electron injection layer contains an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof. May include.

Alkali metals are also selected from Li, Na, K, Rb and Cs. According to one embodiment, the alkali metal may be Li, Na or Cs. According to other embodiments, the alkali metal may be, but is not limited to, Li or Cs.

Alkaline earth metals are also selected from Mg, Ca, Sr, and Ba.

Rare earth metals are also selected from Sc, Y, Ce, Tb, Yb and Gd.
The alkali metal compounds, alkaline earth metal compounds and rare earth metal compounds are also selected from oxides and halides (e.g. fluorides, chlorides, bromides, iodides, etc.) of alkali metals, alkaline earth metals and rare earth metals. Ru.

Alkali metal compounds include alkali metal oxides such as Li ₂ O, Cs ₂ O, K ₂ O, and alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, RbI. is also selected. According to one embodiment, the alkali metal compound is also selected from, but not limited to, LiF, Li ₂ O, NaF, LiI, NaI, CsI, KI.

Alkaline earth metal compounds can also be obtained from alkaline earth metal compounds such as BaO, SrO, CaO, B _x Sr _1-x O (0<x<1), BaxCa _1-x O (0<x<1). selected. According to one embodiment, the alkaline earth metal compound is also selected from, but not limited to, BaO, SrO and CaO.

The rare earth metal compound is also selected from YbF ₃ , ScF ₃ , ScO ₃ , Y ₂ O ₃ , Ce ₂ O ₃ , GdF ₃ and TbF ₃ . According to one embodiment, the rare earth metal compound is also selected from, but not limited to, YbF ₃ , ScF ₃ , TbF ₃ , YbI ₃ , ScI ₃ , TbI ₃ .

The alkali metal complexes, alkaline earth metal complexes and rare earth metal complexes include ions of alkali metals, alkaline earth metals and rare earth metals as described above, and metal ions of the alkali metal complexes, alkaline earth metal complexes and rare earth metal complexes. The ligands coordinated to the Also selected from, but not limited to, phenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline and cyclopentadiene.

The electron injection layer is made of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any of them. It may consist only of arbitrary combinations or may further contain an organic substance. When the electron injection layer further contains an organic substance, an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or Any combination thereof may be uniformly or non-uniformly dispersed in the organic matrix.

The thickness of the electron injection layer may be about 0.1 nm to about 10 nm, about 0.3 nm to about 9 nm. When the thickness of the electron injection layer satisfies the above range, satisfactory electron injection characteristics can be obtained without a substantial increase in driving voltage.

[Second electrode 190]
A second electrode 190 is disposed on the organic layer 150 as described above. The second electrode 190 may be a cathode, which is an electron injection electrode. In this case, the material for the second electrode 190 may be a metal, an alloy, an electrically conductive compound, or a combination thereof having a low work function. can be used.

The second electrode 190 includes lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium - It may contain at least one selected from silver (Mg-Ag), ITO, and IZO, but is not limited thereto. The second electrode 190 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode. The second electrode 190 may have a single layer structure or a multilayer structure including multiple layers.

[Explanation of Figures 2 to 4]
On the other hand, the organic light emitting device 20 of FIG. 2 has a structure in which a first capping layer 210, a first electrode 110, an organic layer 150, and a second electrode 190 are stacked in order, and the organic light emitting device 30 of FIG. The organic light emitting device 40 of FIG. 150, a second electrode 190, and a second capping layer 220 are sequentially stacked.

2 to 4, the description of the first electrode 110, the organic layer 150, and the second electrode 190 refers to the description of FIG. 1.

Light generated in the light-emitting layer in the organic layer 150 of the organic light-emitting elements 20, 40 is extracted to the outside through the first electrode 110, which is a semi-transmissive electrode or a transmissive electrode, and the first capping layer 210, and is emitted to the outside. Light generated in the light emitting layer of the organic layer 150 of the light emitting elements 30, 40 is extracted to the outside through the second electrode 190, which is a semi-transmissive electrode or a transmissive electrode, and the second capping layer 220.

The first capping layer 210 and the second capping layer 220 may serve to improve external light emission efficiency based on the principle of constructive interference. The first capping layer 210 and the second capping layer 220 may be independently an organic capping layer made of an organic material, an inorganic capping layer made of an inorganic material, or a composite capping layer containing an organic material and an inorganic material.

At least one of the first capping layer 210 and the second capping layer 220 is made of a carbocyclic compound, a heterocyclic compound, an amine compound, a porphine derivative, a phthalocyanine derivative, or a naphthalocyanine derivative, independently of each other. It may also contain at least one substance selected from derivatives), alkali metal complexes, and alkaline earth metal complexes. Carbocyclic compounds, heterocyclic compounds and amine compounds optionally have a substituent containing at least one element selected from O, N, S, Se, Si, F, Cl, Br and I. May be replaced. According to an embodiment, at least one of the first capping layer 210 and the second capping layer 220 may independently include an amine compound.

According to other embodiments, at least one of the first capping layer 210 and the second capping layer 220 may independently include a compound represented by the chemical formula 201 or a compound represented by the chemical formula 202. good.

According to still other embodiments, at least one of the first capping layer 210 and the second capping layer 220 includes, independently of each other, a compound selected from compounds HT28 to HT33 and compounds CP1 to CP5 below. However, it is not limited to these.

Although the organic light emitting device has been described above with reference to FIGS. 1 to 4, the present invention is not limited thereto.

Each layer included in the hole transporting region, the light emitting layer, and each layer included in the electron transporting region can be formed using a vacuum evaporation method, a spin coating method, a casting method, an LB (Langmuir-Blodgett) method, an inkjet printing method, or a laser printing method. It is also formed in a predetermined area using various methods such as laser induced thermal imaging (LITI) and laser induced thermal imaging (LITI).

When forming each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region by a vacuum evaporation method, the evaporation conditions are, for example, a deposition temperature of about 100 to about 500°C, a Within the vacuum degree of 10 ^-8 to about 10 ^-3 torr and the deposition rate of about 0.001 nm/sec to about 10 nm/sec, the material contained in the layer to be formed and the structure of the layer to be formed are considered. It is also selected.

When forming each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region by a spin coating method, the coating conditions are, for example, coating at about 2,000 rpm to about 5,000 rpm. The heat treatment speed and heat treatment temperature can be selected within the range of about 80° C. to 200° C., taking into consideration the material included in the layer to be formed and the structure of the layer to be formed.

Hereinafter, a compound and an organic light-emitting device according to an example of the present invention will be described in more detail with reference to synthesis examples and examples. In the following synthesis examples, in the expression "B was used in place of A", the molar equivalent of A and the molar equivalent of B are the same.

Example 1
As an anode, a substrate on which ITO/Ag/ITO was vapor-deposited was cut into a size of 50 mm x 50 mm x 0.7 mm, ultrasonically cleaned using isopropyl alcohol and pure water for 5 minutes each, and then irradiated with ultraviolet rays for 30 minutes. After exposure to ozone and cleaning, the ITO substrate was placed in a vacuum deposition apparatus.

Compounds HT3 and F4-TCNQ were vacuum co-deposited on the top of the ITO substrate at a weight ratio of 98:2 to form a 10 nm thick hole injection layer, and then compound HT3 was vacuum deposited on top of the hole injection layer. , a first hole transport layer having a thickness of 120 nm was formed, and a compound HT18 was deposited to a thickness of 55 nm on top of the first hole transport layer to form a second hole transport layer.

Compound H-2 and compound PD27 were co-deposited on top of the second hole transport layer (weight ratio of 400:3) to form a 40 nm thick light emitting layer. On top of the light emitting layer, compound HB-1 was deposited to form a 5 nm thick buffer layer, and compound ET-1 and Liq were co-deposited at a weight ratio of 50:50 to form a 31 nm thick electron transport layer. . Liq is evaporated on top of the electron transport layer to form a 1 nm thick electron injection layer, and Mg and Ag are co-deposited on top of the electron injection layer (weight ratio of 130:10) to form a 13 nm thick cathode. In this way, an organic light-emitting device was fabricated.

Examples 2 to 7
An organic light emitting device was prepared in the same manner as in Example 1, except that the compounds shown in Table 1 below were used instead of Compounds H-2, HB-1, and ET-1.

Example 8
As an anode, the substrate on which ITO/Ag/ITO was vapor-deposited was cut into 50 mm x 50 mm x 0.7 mm size, and after being ultrasonically cleaned using isopropyl alcohol and pure water for 5 minutes each, it was irradiated with ultraviolet rays for 30 minutes. The ITO substrate was then exposed to ozone and cleaned, and the ITO substrate was placed in a vacuum evaporation apparatus.

Compounds HT3 and F4-TCNQ were vacuum co-deposited on the top of the ITO substrate at a weight ratio of 98:2 to form a 10 nm thick hole injection layer, and then compound HT3 was vacuum deposited on top of the hole injection layer. , a first hole transport layer having a thickness of 120 nm was formed, and a compound HT18 was vapor-deposited to a thickness of 25 nm on top of the first hole transport layer to form a second hole transport layer.

Compound H-7 and compound PD26 were co-deposited on top of the second hole transport layer (weight ratio of 400:10) to form a 40 nm thick light emitting layer. On top of the light emitting layer, compound HB-1 was deposited to form a 5 nm thick buffer layer, and compound ET-1 and Liq were co-deposited at a weight ratio of 50:50 to form a 31 nm thick electron transport layer. . Liq is evaporated on top of the electron transport layer to form a 1 nm thick electron injection layer, and Mg and Ag are co-deposited on top of the electron injection layer (weight ratio of 130:10) to form a 13 nm thick cathode. In this way, an organic light-emitting device was fabricated.

Examples 9-11
An organic light emitting device was prepared in the same manner as in Example 8, except that the compounds shown in Table 1 below were used instead of Compounds H-7, HB-1, and ET-1.

Comparative examples 1 to 4
An organic light emitting device was prepared in the same manner as in Example 1, except that the compounds shown in Table 1 below were used instead of Compounds H-2, HB-1, and ET-1.

Comparative examples 5 to 7
An organic light emitting device was prepared in the same manner as in Example 8, except that the compounds shown in Table 1 below were used instead of Compounds H-7, HB-1, and ET-1.

Evaluation Example The driving voltage, brightness, efficiency, and lifetime of the organic light emitting devices produced in Examples 1 to 11 and Comparative Examples 1 to 7 were evaluated using a Kethley SMU 236 and a luminance meter PR650 at a current density of 50 mA/cm ² . The results are shown in Table 1. Here, _T97 indicates the lifetime and means the time until the luminance reaches 97% of the initial luminance.

From Table 1, it is confirmed that the driving voltage, brightness, efficiency, and lifespan of the organic light emitting devices of Examples 1 to 11 are superior to those of Comparative Examples 1 to 7. We were able to.

Specifically, the life of the organic light emitting devices of Examples 1 to 11 is significantly improved compared to Comparative Examples 1 and 7 in which the first compound, the second compound, and the third compound each contain a triazine structure. I was able to confirm that.

The organic light emitting device of the present invention can be effectively applied to, for example, technical fields related to light emission.

10, 20, 30, 40 Organic light emitting device 110 First electrode 150 Organic layer 190 Second electrode 210 First capping layer 220 Second capping layer

Claims (20)

a first electrode, a second electrode, and an organic layer including a light emitting layer interposed between the first electrode and the second electrode,
The organic layer includes a first compound, a second compound, and a third compound,
The first compound, the second compound, and the third compound are each selected from the group consisting of azine compounds represented by the following chemical formulas 1-1 to 1-5, and the first compound, the second compound, and An organic light emitting device characterized in that the third compound is excluded when an azine compound represented by the following chemical formula 1-3 is selected at the same time.










(In the chemical formulas 1-1 to 1-5,
X _11a is selected from N and C [(L _11a ) _a11a - R _11a ], X _11b is selected from N and C [(L _11b ) _a11b - R _11b ], and X _11c is selected from N and C[ (L _11c ) _a11c −R _11c ], X _11d is selected from N and C[(L _11d ) _a11d −R _11d ], and X _11e is selected from N and C[(L _11e ) _a11e −R _11e ], X _11f is selected from N and C[(L _11f ) _a11f −R _11f ], one of X _11a to X _11f is N,
X _12a is selected from N and C [(L _12a ) _a12a - R _12a ], X _12b is selected from N and C [(L _12b ) _a12b - R _12b ], and X _12c is selected from N and C[ (L _12c ) _a12c −R _12c ], X _12d is selected from N and C[(L _12d ) _a12d −R _12d ], and X _12e is selected from N and C[(L _12e ) _a12e −R _12e ], X _12f is selected from N and C [(L _12f ) _a12f −R _12f ], two of X _12a to X _12f are N,
X _13a is selected from N and C[(L _13a ) _a13a −R _13a ], X _13b is selected from N and C[(L _13b ) _a13b −R _13b ], and X _13c is selected from N and C[ (L _13c ) _a13c −R _13c ], X _13d is selected from N and C[(L _13d ) _a13d −R _13d ], and X _13e is selected from N and C[(L _13e ) _a13e −R _13e ], X _13f is selected from N and C [(L _13f ) _a13f −R _13f ], three of X _13a to X _13f are N,
X _14a is selected from N and C[(L _14a ) _a14a −R _14a ], X _14b is selected from N and C[(L _14b ) _a14b −R _14b ], and X _14c is selected from N and C[ (L _14c ) _a14c −R _14c ], X _14d is selected from N and C[(L _14d ) _a14d −R _14d ], and X _14e is selected from N and C[(L _14e ) _a14e −R _14e ], X _14f is selected from N and C[(L _14f ) _a14f −R _14f ], and four of X _14a to X _14f are N;
X _15a is selected from N and C [(L _15a ) _a15a - R _15a ], X _15b is selected from N and C [(L _15b ) _a15b - R _15b ], and X _15c is selected from N and C[ (L _15c ) _a15c −R _15c ], X _15d is selected from N and C[(L _15d ) _a15d −R _15d ], and X _15e is selected from N and C[(L _15e ) _a15e −R _15e ], X _15f is selected from N and C[(L _15f ) _a15f −R _15f ], and five of X _15a to X _15f are N;
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a C ₃ -C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ - C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic fused polycyclic group and divalent non-aromatic hetero fused polycyclic group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group , monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero-fused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group , pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group , a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and an imidazopyridinyl group. , a C ₃ -C ₁₀ cycloalkenylene group, a C ₁ -C ₁₀ heterocycloalkenylene group, a C ₆ -C ₆₀ arylene group, a C ₁ -C ₆₀ heteroarylene group, a divalent non-aromatic fused polycyclic group, and selected from divalent non-aromatic heterofused polycyclic groups,
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a triazinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group, monovalent non-aromatic group fused polycyclic group, monovalent non-aromatic heterofused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group , an oxadiazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and a triazinylene group substituted with at least one selected from an imidazopyridinyl group. not,
a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are independently selected from 0, 1, 2, 3, and 4,
R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, deuterium, -F, -Cl, -Br , -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group , n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero-fused polycyclic group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic group Hetero-fused polycyclic group; and methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl substituted with at least one selected from deuterium, -F, -Cl, -Br and -I group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, a phenyl group substituted with at least one selected from a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group; Biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group , benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero-fused polycyclic group;
selected from
Adjacent R _11a to R _11f , adjacent R _12a to R _12f , adjacent R _13a to R _13f , adjacent R _14a to R _14f , and/or adjacent R _15a to R _15f are saturated rings or unsaturated rings. or does not form a saturated or unsaturated ring,
In the chemical formula 1-2, any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenyl groups L 12a to L _12f are the following chemical formula 2-4, X ₂₁ is C(R ₂₁ )(R ₂₂ ) and X ₂₂ is N(R ₂₃ ), or X ₂₁ is N(R ₂₁ ) and X ₂₂ is C(R ₂₃ )(R ₂₄ ), When R ₂₁ to R ₂₄ are methyl groups, the nitrogen atom constituting the chemical formula 2-4 is not a bonding site with L _12a to L _12f ,


In the chemical formula 1-2, (L _12a ) _a12a -R _12a , (L _12b ) _a12b -R _12b , (L _12c ) _a12c -R _12c , (L _12d ) _a12d -R _12d , (L _12e ) _a12e -R _12e , (L _12f ) _a12f -R _12f is the chemical formula 2-4 , X ₂₁ is C(R ₂₁ )(R ₂₂ ) and X ₂₂ is N(R ₂₃ ), or , X ₂₁ is N(R ₂₁ ), X ₂₂ is C(R ₂₃ )(R ₂₄ ), and R ₂₁ to R ₂₄ are methyl groups, the nitrogen atom constituting the chemical formula 2-4 is _{12a to}
In the chemical formula 1-2 , when any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenylene groups L 12a to L _12f are carbazolyl groups, the carbazolyl The nitrogen atom constituting the group is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenylene groups L 12a to L _12f are 15,15-dimethyl-11, 19-Diazaheptacyclo[14.11.0.02, 14.04, 12.05, 10.018, 26.020, 25] Heptacocer-1 (16), 2 (14), 3, 5, 7 ,9,12,17,20,22,24,26-dodecanyl group, said 15,15-dimethyl-11,19-diazaheptacyclo[14.11.0.02,14.04,12 .05,10.018,26.020,25] heptacos-1(16),2(14),3,5,7,9,12,17,20,22,24,26-dodecanyl group The nitrogen atom is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is 12-phenyl-12,16-diazahexacyclo[11.11.0.02, 11.03, 8.015, 23.017 ,22]tetracosa-1(13),2(11),3,5,7,9,14,17,19,21,23-undecaene group, and the 12-phenyl-12,16-diazahexa cyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosal-1(13),2(11),3,5,7,9,14,17,19, When R _12a to R _12f bonded to L _12a to L _12f , which are 21,23-undecaene groups, are phenyl groups, the 12-phenyl-12,16-diazahexacyclo[11.11.0.02, 11.03,8.015,23.017,22] Nitrogen constituting the tetracosal-1(13),2(11),3,5,7,9,14,17,19,21,23-undecaene group The atom is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is a single bond, and R _12a to R _12f bonded to the single bonds L _12a to L _12f are 12-phenyl-12,16- Diazahexacyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosal-1(13),2(11),3,5,7,9,14,17 , 19,21,23-undecaene group, the 12-phenyl-12,16-diazahexacyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosa -1(13),2(11),3,5,7,9,14,17,19,21,23-The nitrogen atom constituting the undecaene group is not a bonding site with L _12a to L _12f . ,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12c =C-phenyl group, X _12b =C-hydrogen, X _12d =X _12f =N, X _12e =C-m phenylene group-dimethyl Except for azine compounds having a pyrimidinyl group substituted with a cyclopentadicarbazolylene group, a phenylene group, and a diphenyl group,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12d =N, X _{12b =} X _12c =C-phenyl group and form a ring, X 12e ₌ C-hydrogen , Except for azine compounds having a dibenzothiophenyl group,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12d =N, X _12b =X _12c =C-ethyl group and form a ring, and X _12e =C- (substituted with phenyl group). benzindrocarbazolyl group, X _12f = _C -phenyl group, or X _12a = X _12d = N, X _12b = X _12c = C-ethyl group and form a ring, Excludes azine compounds having -phenyl group and X _12f =C-phenyl group. ) L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, and an azulenylene group. group, heptarenylene group, indacenylene group, acenaphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenalenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylene group Ren group, pyrenylene group, chrysenylene group, naphthacenylene group, picenylene group, perylene group, pentaphenylene group, hexasenylene group, pentaceneylene group, rubisenylene group, coronenylene group, obarenylene group, pyrrolylene group, thiophenylene group, furanylene group, imidazolylene group, Pyrazolylene group, thiazorylene group, isothiazolylene group, oxazolylene group, isoxazolylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, pyridazinylene group, isoindolylene group, indolylene group, indazolylene group, purinylene group, quinolinylene group, isoquinolinylene group, benzoquinolinyl group Nylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, carbazorylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, phenazinylene group, benzimidazolylene group, benzofuranylene group, benzothiophenylene group group, isobenzothiazolylene group, benzoxazorylene group, isobenzoxazolylene group, triazolilene group, tetrazolylene group, oxadiazolelene group, dibenzofuranylene group, dibenzothiophenylene group, benzofuropyridinylene group, Benzothienopyridinylene group, benzofuropyrimidinylene group, benzothienopyrimidinylene group, benzocarbazolylene group and dibenzocarbazolylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxy group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ - _C20 alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptalenyl group, indacenyl group, acenaphthyl group, fluorenyl group, Spiro-fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, penta Phenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group , oxadiazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, and imidazopyridinyl group, phenylene group, pentalenylene group substituted with at least one of , indenylene group, naphthylene group, azulenylene group, heptarenylene group, indasenylene group, acenaphthylene group, fluorenylene group, spiro-fluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenalenylene group, phenanthrenylene group, anthracenylene group , fluoranthenylene group, triphenylene group, pyrenylene group, chrysenylene group, naphthaceneylene group, picenylene group, perylene group, pentaphenylene group, hexasenylene group, pentaceneylene group, rubisenylene group, coronenylene group, obarenylene group, pyrorylene group, thiophenylene group group, furanylene group, imidazolylene group, pyrazolylene group, thiazolylene group, isothiazolylene group, oxazolylene group, isoxazorylene group, pyridinylene group, pyrazinylene group, pyrimidinylene group, pyridazinylene group, isoindorylene group, indolylene group, indazolylene group, purinylene group, quinolinylene group group, isoquinolinylene group, benzoquinolinylene group, phthalazinylene group, naphthyridinylene group, quinoxalinylene group, quinazolinylene group, cinnolinylene group, carbazorylene group, phenanthridinylene group, acridinylene group, phenanthrolinylene group, phenazinylene group, benzimidazolylene group group, benzofuranylene group, benzothiophenylene group, isobenzothiazolylene group, benzoxazolylene group, isobenzoxazolylene group, triazorylene group, tetrazolylene group, oxadiazolelene group, dibenzofuranylene group, dibenzothiophenylene group , benzofuropyridinylene group, benzothienopyridinylene group, benzofuropyrimidinylene group, benzothienopyrimidinylene group, benzocarbazolylene group, and dibenzocarbazolylene group; The organic light emitting device according to claim 1. R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, deuterium, -F, -Cl, -Br , -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group , n-butoxy group, isobutoxy group, sec-butoxy group and tert-butoxy group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group a phenyl group, a biphenyl group, a terphenyl group, substituted with at least one selected from a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group , a benzofuropyrimidinyl group, a benzothienopyrimidinyl group; and a partial structure represented by any one of the following chemical formulas 2-1 to 2-17. .






(In the chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group , n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzo A phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, substituted with at least one selected from a furopyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, selected from: a benzothienopyrimidinyl group;
Any one of the carbon atoms or nitrogen atoms constituting the chemical formulas 2-1 to 2-17 is a bonding site with an adjacent atom. ) R _11a to R _11f , R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, deuterium, -F, -Cl, -Br , -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group and quinazolinyl group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, At least one selected from biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, and quinazolinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group and quinazolinyl group The organic light-emitting device according to claim 1, wherein the organic light-emitting device is selected from a group; and a partial structure represented by any one of the following chemical formulas 2-1 to 2-17.






(In the chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I butyl group and tert-butyl group; and phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, selected from: quinoxalinyl group and quinazolinyl group;
Any one of the carbon atoms or nitrogen atoms constituting the chemical formulas 2-1 to 2-17 is a bonding site with an adjacent atom. The first compound, the second compound, and the third compound have the following chemical formulas 1-11, 1-21 to 1-25, 1-31 to 1-33, 1-41, 1-42, and 1-51, respectively. The first compound, the second compound, and the third compound selected from azine compounds represented by any one of the following chemical formulas 1-31 to 1-33 are simultaneously represented by any one of the following chemical formulas 1-31 to 1-33. 2. The organic light-emitting device according to claim 1, wherein the organic light-emitting device is not selected from azine-based compounds.










(In the chemical formulas 1-11, 1-21 to 1-25, 1-31 to 1-33, 1-41, 1-42 and 1-51,
R _12g to R _12j and R _13g to R _13j each independently represent hydrogen, deuterium, -F, -Cl, -Br, -I, deuterium, -F, -Cl, -Br, -I , methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n- Butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group , quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br and - Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, phenyl group, biphenyl group substituted with at least one selected from -I group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, selected from benzothienopyridinyl, benzofuropyrimidinyl and benzothienopyrimidinyl groups. ) The organic light emitting device according to claim 1, wherein the first compound includes a partial structure represented by any one of the following chemical formulas 2-1 to 2-17.






(In the chemical formulas 2-1 to 2-17,
X ₂₁ is selected from C(R ₂₁ )(R ₂₂ ), N(R ₂₁ ), O and S;
X ₂₂ is selected from C(R ₂₃ )(R ₂₄ ), N(R ₂₃ ), O and S;
R ₂₁ to R ₂₄ are each independently a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group and tert-butyl group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyrinyl group Dinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; and deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group , terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzo Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group substituted with at least one selected from thienopyridinyl group, benzofuropyrimidinyl group, and benzothienopyrimidinyl group , dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group; is,
Any one of the carbon atoms or nitrogen atoms constituting the chemical formulas 2-1 to 2-17 is a bonding site with an adjacent atom. ) The first compound is selected from the following compounds H-1 to H-11,
The second compound is selected from the following compounds HB-1 to HB-3,
The organic light emitting device according to claim 1, wherein the third compound is selected from the following compounds ET-1 and ET-2.






Claim 1, wherein the first compound, the second compound, and the third compound are selected from azine compounds represented by any one of the chemical formulas 1-1 to 1-3. The organic light emitting device described above. i) The first compound is selected from azine compounds represented by any one of the chemical formulas 1-1 and 1-2, and the second compound and the third compound are independently selected from azine compounds represented by any one of chemical formulas 1-2 and 1-3,
ii) the second compound is selected from azine compounds represented by any one of the chemical formulas 1-1 and 1-2, and the first compound and the third compound are independently of each other or iii) the third compound is selected from azine compounds represented by any one of chemical formulas 1-2 and 1-3, or iii) the third compound is selected from any one of chemical formulas 1-1 and 1-2. The first compound and the second compound are independently selected from the azine compounds represented by any one of the chemical formulas 1-2 and 1-3. The organic light emitting device according to claim 1, characterized in that: The organic layer includes an electron transport region interposed between the light emitting layer and the second electrode,
The electron transport region includes a buffer layer and an electron transport layer,
The buffer layer is interposed between the light emitting layer and the electron transport layer,
The light emitting layer includes the first compound,
The buffer layer includes the second compound,
The organic light emitting device according to claim 1, wherein the electron transport layer includes the third compound. the light emitting layer is in contact with the buffer layer,
The organic light emitting device of claim 10, wherein the buffer layer is in contact with the electron transport layer. the first electrode is an anode,
The organic light emitting device according to claim 1, wherein the second electrode is a cathode. The organic light emitting device according to claim 1, wherein the light emitting layer contains an organometallic compound. a substrate partitioned into a first sub-pixel area, a second sub-pixel area and a third sub-pixel area;
a plurality of first electrodes arranged in each of the first sub-pixel region, the second sub-pixel region, and the third sub-pixel region of the substrate;
a second electrode facing the plurality of first electrodes;
an organic layer interposed between the plurality of first electrodes and the second electrode and including a light emitting layer;
The organic layer includes a first compound, a second compound, and a third compound,
The first compound, the second compound and the third compound are each selected from azine compounds represented by any one of the following chemical formulas 1-1 to 1-5, and the first compound, the second compound The organic light emitting device is excluded when the compound and the third compound are simultaneously selected from azine compounds represented by the following chemical formula 1-3.










(In the chemical formulas 1-1 to 1-5,
X _11a is selected from N and C [(L _11a ) _a11a - R _11a ], X _11b is selected from N and C [(L _11b ) _a11b - R _11b ], and X _11c is selected from N and C[ (L _11c ) _a11c −R _11c ], X _11d is selected from N and C[(L _11d ) _a11d −R _11d ], and X _11e is selected from N and C[(L _11e ) _a11e −R _11e ], X _11f is selected from N and C[(L _11f ) _a11f −R _11f ], one of X _11a to X _11f is N,
X _12a is selected from N and C [(L _12a ) _a12a - R _12a ], X _12b is selected from N and C [(L _12b ) _a12b - R _12b ], and X _12c is selected from N and C[ (L _12c ) _a12c −R _12c ], X _12d is selected from N and C[(L _12d ) _a12d −R _12d ], and X _12e is selected from N and C[(L _12e ) _a12e −R _12e ], X _12f is selected from N and C [(L _12f ) _a12f −R _12f ], two of X _12a to X _12f are N,
X _13a is selected from N and C[(L _13a ) _a13a −R _13a ], X _13b is selected from N and C[(L _13b ) _a13b −R _13b ], and X _13c is selected from N and C[ (L _13c ) _a13c −R _13c ], X _13d is selected from N and C[(L _13d ) _a13d −R _13d ], and X _13e is selected from N and C[(L _13e ) _a13e −R _13e ], X _13f is selected from N and C[(L _13f )a _13f −R _13f ], three of X _13a to X _13f are N,
X _14a is selected from N and C[(L _14a ) _a14a −R _14a ], X _14b is selected from N and C[(L _14b ) _a14b −R _14b ], and X _14c is selected from N and C[ (L _14c ) _a14c −R _14c ], X _14d is selected from N and C[(L _14d ) _a14d −R _14d ], and X _14e is selected from N and C[(L _14e ) _a14e −R _14e ], X _14f is selected from N and C[(L _14f ) _a14f −R _14f ], and four of X _14a to X _14f are N;
X _15a is selected from N and C [(L _15a ) _a15a - R _15a ], X _15b is selected from N and C [(L _15b ) _a15b - R _15b ], and X _15c is selected from N and C[ (L _15c ) _a15c −R _15c ], X _15d is selected from N and C[(L _15d ) _a15d −R _15d ], and X _15e is selected from N and C[(L _15e ) _a15e −R _15e ], X _15f is selected from N and C[(L _15f ) _a15f −R _15f ], and five of X _15a to X _15f are N;
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a C ₃ -C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ - C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic fused polycyclic group and divalent non-aromatic hetero fused polycyclic group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group , monovalent non-aromatic fused polycyclic group, monovalent non-aromatic hetero-fused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group , pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group , triazolyl group, tetrazolyl group, oxadiazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, and imidazopyridinyl group. , C ₃ -C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ -C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic fused polycyclic group and divalent selected from non-aromatic heterofused polycyclic groups of
L _11a to L _11f , L _12a to L _12f , L _13a to L _13f , L _14a to L _14f , and L _15a to L _15f each independently represent a triazinylene group; and deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazinyl group, hydrazonyl group, carboxyl group or its salt, sulfo group or its salt, phosphoric acid group or its salt, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₃₀ aryl group, C ₆ -C ₃₀ aryloxy group, C ₆ -C ₃₀ arylthio group, C ₁ -C ₃₀ heteroaryloxy group, C ₁ -C ₃₀ heteroarylthio group, monovalent non-aromatic group fused polycyclic group, monovalent non-aromatic heterofused polycyclic group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , pyrimidinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinnolinyl group, carbazolyl group, phenanthridinyl group group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group , oxadiazolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, and triazinylene group substituted with at least one of imidazopyridinyl group ,
a11a to a11f, a12a to a12f, a13a to a13f, a14a to a14f, and a15a to a15f are independently selected from 0, 1, 2, 3, and 4,
R _11a to R ₁₁ f, R _12a to R _12f , R _13a to R _13f , R _14a to R _14f , and R _15a to R _15f each independently represent hydrogen, deuterium, -F, -Cl, - Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy groups, n-butoxy groups, isobutoxy groups, sec-butoxy groups and tert-butoxy groups;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group and tert-butyl group;
Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyrinyl group Dinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic hetero-fused polycyclic group;
Deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, methoxy group, Ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzo Furanyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group and benzothienopyrimidinyl group phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, substituted with at least one selected from Isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group, benzofuropyrimidinyl group, benzothienopyrimidinyl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic group Hetero-fused polycyclic group;
Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec- substituted with at least one selected from deuterium, -F, -Cl, -Br and -I Butyl group, tert-butyl group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group a phenyl group, a biphenyl group, a terphenyl group, substituted with at least one selected from a quinazolinyl group, a benzofuropyridinyl group, a benzothienopyridinyl group, a benzofuropyrimidinyl group, and a benzothienopyrimidinyl group, Naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, pyridinyl group, pyrimidinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, benzofuropyridinyl group, benzothienopyridinyl group , a benzofuropyrimidinyl group, a benzothienopyrimidinyl group, a monovalent non-aromatic fused polycyclic group, and a monovalent non-aromatic heterofused polycyclic group;
Adjacent R _11a to R _11f , adjacent R _12a to R _12f , adjacent R _13a to R _13f , adjacent R _14a to R _14f , and/or adjacent R _15a to R _15f are saturated rings or unsaturated rings. or does not form a saturated or unsaturated ring,
In the chemical formula 1-2, any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenyl groups L 12a to L _12f are the following chemical formula 2-4, X ₂₁ is C(R ₂₁ )(R ₂₂ ) and X ₂₂ is N(R ₂₃ ), or X ₂₁ is N(R ₂₁ ) and X ₂₂ is C(R ₂₃ )(R ₂₄ ), When R ₂₁ to R ₂₄ are methyl groups, the nitrogen atom constituting the chemical formula 2-4 is not a bonding site with L _12a to L _12f ,

In the chemical formula 1-2, (L _12a ) _a12a -R _12a , (L _12b ) _a12b -R _12b , (L _12c ) _a12c -R _12c , (L _12d ) _a12d -R _12d , (L _12e ) _a12e -R _12e , (L _12f ) _a12f -R _12f is the chemical formula 2-4 , X ₂₁ is C(R ₂₁ )(R ₂₂ ) and X ₂₂ is N(R ₂₃ ), or , X ₂₁ is N(R ₂₁ ), X ₂₂ is C(R ₂₃ )(R ₂₄ ), and R ₂₁ to R ₂₄ are methyl groups, the nitrogen atom constituting the chemical formula 2-4 is _{12a to}
In the chemical formula 1-2 , when any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenylene groups L 12a to L _12f are carbazolyl groups, the carbazolyl The nitrogen atom constituting the group is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is a phenylene group, and R _{12a to} R _12f bonded to the phenylene groups L 12a to L _12f are 15,15-dimethyl-11, 19-Diazaheptacyclo[14.11.0.02, 14.04, 12.05, 10.018, 26.020, 25] Heptacocer-1 (16), 2 (14), 3, 5, 7 ,9,12,17,20,22,24,26-dodecanyl group, said 15,15-dimethyl-11,19-diazaheptacyclo[14.11.0.02,14.04,12 .05,10.018,26.020,25] heptacos-1(16),2(14),3,5,7,9,12,17,20,22,24,26-dodecanyl group The nitrogen atom is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is 12-phenyl-12,16-diazahexacyclo[11.11.0.02, 11.03, 8.015, 23.017 ,22]tetracosa-1(13),2(11),3,5,7,9,14,17,19,21,23-undecaene group, and the 12-phenyl-12,16-diazahexa cyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosal-1(13),2(11),3,5,7,9,14,17,19, When R _12a to R _12f bonded to L _12a to L _12f , which are 21,23-undecaene groups, are phenyl groups, the 12-phenyl-12,16-diazahexacyclo[11.11.0.02, 11.03,8.015,23.017,22] Nitrogen constituting the tetracosal-1(13),2(11),3,5,7,9,14,17,19,21,23-undecaene group The atom is not a bonding site with L _12a to L _12f ,
In the chemical formula 1-2, any one of L _12a to L _12f is a single bond, and R _12a to R _12f bonded to the single bonds L _12a to L _12f are 12-phenyl-12,16- Diazahexacyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosal-1(13),2(11),3,5,7,9,14,17 , 19,21,23-undecaene group, the 12-phenyl-12,16-diazahexacyclo[11.11.0.02,11.03,8.015,23.017,22]tetracosa -1(13),2(11),3,5,7,9,14,17,19,21,23-The nitrogen atom constituting the undecaene group is not a bonding site with L _12a to L _12f . ,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12c =C-phenyl group, X _12b =C-hydrogen, X _12d =X _12f =N, X _12e =C-m phenylene group-dimethyl Except for azine compounds having a pyrimidinyl group substituted with a cyclopentadicarbazolylene group, a phenylene group, and a diphenyl group,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12d =N, X _{12b =} X _12c =C-phenyl group and form a ring, X 12e ₌ C-hydrogen , Except for azine compounds having a dibenzothiophenyl group,
In the azine compound represented by the chemical formula 1-2, X _12a =X _12d =N, X _12b =X _12c =C-ethyl group and form a ring, and X _12e =C- (substituted with phenyl group). benzindrocarbazolyl group, X _12f = _C -phenyl group, or X _12a = X _12d = N, X _12b = X _12c = C-ethyl group and form a ring, Excludes azine compounds having -phenyl group and X _12f =C-phenyl group. ) 15. The first compound, the second compound, and the third compound are selected from azine compounds represented by any one of the chemical formulas 1-1 to 1-3. The organic light emitting device described above. The organic layer includes an electron transport region interposed between the light emitting layer and the second electrode,
The electron transport region includes a buffer layer and an electron transport layer,
The buffer layer is interposed between the light emitting layer and the electron transport layer,
The light emitting layer includes the first compound,
The buffer layer includes the second compound,
The organic light emitting device according to claim 14, wherein the electron transport layer includes the third compound. the light emitting layer is in contact with the buffer layer,
The organic light emitting device of claim 16, wherein the buffer layer is in contact with the electron transport layer. the plurality of first electrodes are anodes,
The organic light emitting device of claim 14, wherein the second electrode is a cathode. The organic light emitting device according to claim 14, wherein the light emitting layer contains an organometallic compound. The light-emitting layer includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer disposed in the first sub-pixel region, the second sub-pixel region, and the third sub-pixel region of the substrate, respectively,
The organic light emitting device according to claim 14, wherein at least one of the first light emitting layer and the second light emitting layer includes the first compound and an organometallic compound.