Condensed ring compound and organic light emitting element containing the same

Abstract

To provide a condensed ring compound serving as a raw material for an organic light emitting element having high quantum efficiency and improved roll-off characteristics at high current densities.SOLUTION: There is provided a condensed ring compound represented by the following chemical formula. A11 to A14 are independently a carbocyclic group having 5 to 60 carbon atoms or a heterocyclic group having 1 to 60 carbon atoms, A11 to A14 are optionally linked via a linking group, A21 to A24 are optionally linked via a linking group, n11 and n21 are independently 0 or 1, L11 to L14 and L21 to L24 are independently selected from a single bond, *-N(Ra)-*', a substituted / unsubstituted carbocyclic group having 5 to 60 carbon atoms and a substituted / unsubstituted heterocyclic group having 1 to 60 carbon atoms.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a fused ring compound and an organic light-emitting device including the same. [Background technology]

[0002] Organic light-emitting devices are self-emitting devices that, compared with conventional devices, have a wider viewing angle, superior contrast, shorter response time, superior luminance, driving voltage and response speed characteristics, and are capable of multiple colors.

[0003] An organic light emitting device may have a structure in which a first electrode is disposed on a substrate, and a hole transport region, a light emitting layer, an electron transport region, and a second electrode are sequentially formed on the first electrode. 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 light emitting layer region to generate excitons. Light is generated as the excitons change from an excited state to a ground state. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Korean Patent Publication No. 2010-0048447 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a fused ring compound and an organic light-emitting device including the same. [Means for solving the problem]

[0006] According to one embodiment, there is provided a fused ring compound represented by the following formula 1: [ka] ... 1 [ka] ... 2 In formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 are independent of each other, C 5 -C 60 Carbocyclic groups and C 1 -C 60 heterocyclic groups, A 11 ~A 14 are optionally linked to each other via a first linking group or are not linked to each other; A 21 ~A 24 are linked to each other via a second linking group or are not linked to each other; n11 and n21 are each independently selected from 0 and 1; L 11 ~L 14 , and L 21 ~L 24 are, independently of each other, a single bond, *-N(R a )-*', substituted or unsubstituted C 5 -C 60 Carbocyclic groups and substituted or unsubstituted C 1 -C 60 heterocyclic groups, a11 to a14 and a21 to a24 are each independently selected from the group consisting of 0, 1, 2, and 3; R 11 ~R 14 are each independently a group represented by chemical formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), R a , and R 21 ~R 24are each independently a bond site, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), but R 21 ~R 24 one of which is a binding site, b11 to b14 and b21 to b24 are each independently selected from 1, 2, 3, 4, 5, and 6; c11 to c14, and c21 to c24 are independently selected from 1, 2, 3, 4, 5 and 6; Q 1 ~Q 3 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

[0007] According to another embodiment, an organic light emitting device is provided that includes a fused ring compound represented by Chemical Formula 1. Effect of the Invention

[0008] The organic light-emitting device including the fused ring compound of the present invention has high quantum efficiency and improved roll-off characteristics at high current density. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic diagram illustrating a structure of an organic light emitting device according to an embodiment of the present invention. [Diagram 2] 2 is a schematic diagram illustrating a structure of an organic light emitting device according to another embodiment of the present invention. [Diagram 3] 1 is a schematic diagram illustrating a structure of an organic light emitting device according to yet another embodiment of the present invention. [Figure 4] 1 is a schematic diagram illustrating a structure of an organic light emitting device according to yet another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention can be modified in various ways and can have various embodiments, but specific embodiments are illustrated in the drawings and will be described in detail by detailed description. The effects, features, and methods of achieving the present invention will become clear by referring to the embodiments described in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below, and can be realized in various forms.

[0011] Hereinafter, an embodiment of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and duplicate descriptions thereof will be omitted.

[0012] In the following embodiments, the singular expression includes the plural expression unless otherwise clearly indicated in the context.

[0013] In the following embodiments, the terms "comprise" or "have" mean the presence of features or components described in the specification, without precluding the possibility that one or more other features or components may be added.

[0014] In the following embodiments, when a part such as a film, region, or component is said to be on or above another part, this does not only mean that it is directly on top of the other part, but also means that there is another film, region, component, etc. in between.

[0015] In the drawings, the size of components may be exaggerated or reduced for the convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of explanation, and the present invention is not necessarily limited to what is shown in the drawings.

[0016] [General definition of substituents] In this specification, C 1 -C 60 The 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, a propyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a pentyl group, an iso-amyl group, and a hexyl group. 1 -C 60 The alkylene group is C 1 -C 60 It means a divalent group having the same structure as an alkyl group.

[0017] In this specification, C 2 -C 60 The alkenyl group is C 2 -C 60 It means a hydrocarbon group containing one or more carbon double bonds in the middle or at the end of the alkyl group, and specific examples thereof include an ethenyl group, a propenyl group, and a butenyl group. 2 -C 60 The alkenylene group is C 2 -C 60 It means a divalent group having the same structure as an alkenyl group.

[0018] In this specification, C 2 -C 60 The alkynyl group is C 2 -C 60 It means a hydrocarbon group containing one or more carbon triple bonds in the middle or at the end of the alkyl group, and specific examples thereof include an ethynyl group, a propynyl group, and the like. 2 -C 60 The alkynylene group is C 2 -C 60 It means a divalent group having the same structure as an alkynyl group.

[0019] In this specification, C 1 -C 60 The alkoxy group is -OA. 101 (Here, A 101 is C 1 -C 60 Specific examples of the aryl group include methoxy, ethoxy, and isopropyloxy groups.

[0020] In this specification, C 3 -C 10 Cycloalkyl groups are C 3 -C 10 Specific examples of the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group. 3 -C 10 The cycloalkylene group is C 3-C 10 It means a divalent group having the same structure as a cycloalkyl group.

[0021] In this specification, C 1 -C 10 The heterocycloalkyl group is a C alkyl group containing at least one heteroatom selected from N, O, Si, P and S as a ring-forming atom. 1 -C 10 Specific examples of the aryl group include a 1,2,3,4-oxatriazole lysinyl group, a tetrahydrofuranyl group, and a tetrahydrothiophenyl group. 1 -C 10 The heterocycloalkylene group is 1 -C 10 It means a divalent group having the same structure as a heterocycloalkyl group.

[0022] In this specification, C 3 -C 10 The cycloalkenyl group is C 3 -C 10 It means a monovalent monocyclic group having at least one double bond in the ring but not having aromaticity, and specific examples thereof include a cyclopentenyl group, a cyclohexenyl group, and a cycloheptenyl group. 3 -C 10 The cycloalkenylene group is C 3 -C 10 It means a divalent group having the same structure as a cycloalkenyl group.

[0023] In this specification, C 1 -C 10 The heterocycloalkenyl group is a C alkyl group containing at least one heteroatom selected from N, O, Si, P and S as a ring-forming atom. 1 -C 10 It is a monovalent monocyclic group having at least one double bond in the ring. 1 -C 10Specific examples of the heterocycloalkenyl group include a 4,5-dihydro-1,2,3,4-oxatriazolyl group, a 2,3-dihydrofuranyl group, and a 2,3-dihydrothiophenyl group. 1 -C 10 The heterocycloalkenylene group is C 1 -C 10 It means a divalent group having the same structure as a heterocycloalkenyl group.

[0024] In this specification, C 6 -C 60 The aryl group is C 6 -C 60 means a monovalent radical having a carbocyclic aromatic system, C 6 -C 60 The arylene group is C 6 -C 60 C means a divalent group having a carbocyclic aromatic system. 6 -C 60 Specific examples of the aryl group include a phenyl group, a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, and a chrysenyl group. 6 -C 60 Aryl groups and C 6 -C 60 When an arylene group contains more than one ring, the two or more rings are fused together.

[0025] In this specification, C 1 -C 60 The heteroaryl group contains at least one heteroatom selected from N, O, Si, P and S as a ring-forming atom, and 1 -C 60 means a monovalent radical having a heterocyclic aromatic system, C 1 -C 60 The heteroarylene group contains at least one heteroatom selected from N, O, Si, P, and S as a ring-forming atom, and 1 -C 60 means a divalent radical having a heterocyclic aromatic system. 1 -C 60Specific examples of the heteroaryl group include a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, and an isoquinolinyl group. 1 -C 60 Heteroaryl groups and C 1 -C 60 When a heteroarylene group contains more than one ring, the two or more rings are fused together.

[0026] In this specification, C 6 -C 60 The aryloxy group is -OA. 102 (Here, A 102 is C 6 -C 60 aryl group), C 6 -C 60 The arylthio group is -SA 103 (Here, A 103 is C 6 -C 60 aryl group).

[0027] In this specification, C 1 -C 60 The heteroaryloxy group is -OA. 104 (Here, A 104 is C 1 -C 60 Heteroaryl group), C 1 -C 60 The heteroarylthio group is -SA 105 (Here, A 105 is C 1 -C 60 A heteroaryl group is shown.

[0028] In the present specification, the monovalent non-aromatic condensed polycyclic group refers to a monovalent group (e.g., having 8 to 60 carbon atoms) in which two or more rings are condensed with each other, the ring-forming atoms are only carbon atoms, and the entire molecule is non-aromatic. Specific examples of the monovalent non-aromatic condensed polycyclic group include a fluorenyl group. In the present specification, the divalent non-aromatic condensed polycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

[0029] In the present specification, the monovalent non-aromatic hetero-condensed polycyclic group means a monovalent group (e.g., having 1 to 60 carbon atoms) in which two or more rings are condensed with each other, and which contains at least one heteroatom selected from N, O, Si, P, and S as a ring-forming atom other than carbon, and the entire molecule has non-aromaticity. Specific examples of the monovalent non-aromatic hetero-condensed polycyclic group include a carbazolyl group. In the present specification, the divalent non-aromatic hetero-condensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic hetero-condensed polycyclic group.

[0030] In this specification, C 5 -C 60 A carbocyclic group refers to a monocyclic or polycyclic group having 5 to 60 carbon atoms and containing only carbon as ring-forming atoms. 5 -C 60 A carbocyclic group may be an aromatic carbocyclic group or a non-aromatic carbocyclic group. 5 -C 60 A carbocyclic group can be a ring, such as benzene, a monovalent group, such as a phenyl group, or a divalent group, such as a phenylene group. 5 -C 60 Depending on the number of substituents attached to the carbocyclic group, 5 -C 60 The carbocyclic radicals can be variously modified, such as being trivalent or tetravalent radicals.

[0031] In this specification, C 1 -C 60 The heterocyclic group is C 5 -C 60 It has the same structure as a carbocyclic group, but contains at least one heteroatom selected from N, O, Si, P, and S in addition to carbon (which may have 1 to 60 carbon atoms) as ring-forming atoms.

[0032] As used herein, substituted C 5 -C 60 Carbocyclic groups, substituted C 1 -C 60 Heterocyclic groups, substituted C 3 -C 10Cycloalkylene groups, substituted C 1 -C 10 Heterocycloalkylene groups, substituted C 3 -C 10 Cycloalkenylene groups, substituted C 1 -C 10 Heterocycloalkenylene groups, substituted C 6 -C 60 Arylene Groups, Substituted C 1 -C 60 Heteroarylene groups, substituted divalent nonaromatic condensed polycyclic groups, substituted divalent nonaromatic condensed heteropolycyclic groups, substituted C 1 -C 60 Alkyl groups, substituted C 2 -C 60 Alkenyl groups, substituted C 2 -C 60 Alkynyl groups, substituted C 1 -C 60 Alkoxy groups, substituted C 3 -C 10 Cycloalkyl groups, substituted C 1 -C 10 Heterocycloalkyl groups, substituted C 3 -C 10 Cycloalkenyl groups, substituted C 1 -C 10 Heterocycloalkenyl Groups, Substituted C 6 -C 60 Aryl groups, substituted C 6 -C 60 Aryloxy groups, substituted C 6 -C 60 Arylthio groups, substituted C 1 -C 60 Heteroaryl Groups, Substituted C 1 -C 60 Heteroaryloxy groups, substituted C 1 -C 60 At least one of the substituents of the heteroarylthio group, the substituted monovalent non-aromatic fused polycyclic group, and the substituted monovalent non-aromatic fused polycyclic group is Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C1 -C 60 Alkyl group, C 2 -C 60 Alkenyl group, 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 groups, C 1 -C 10 Heterocycloalkyl groups, 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 groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O) 2 (Q 11 ) and -P(=O)(Q 11 )(Q 12 ) replaced with at least one selected from 1 -C 60 Alkyl group, C 2 -C 60 Alkenyl group, C 2 -C 60 Alkynyl groups and C 1 -C60 Alkoxy groups; C 3 -C 10 Cycloalkyl groups, C 1 -C 10 Heterocycloalkyl groups, 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 groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic condensed heteropolycyclic 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 groups, C 1 -C 10 Heterocycloalkyl groups, 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 groups, C 1 -C 60Heteroaryloxy group, C 1 -C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic 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 ) replaced with at least one selected from 3 -C 10 Cycloalkyl groups, C 1 -C 10 Heterocycloalkyl groups, 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 groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic condensed heteropolycyclic groups; 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 ); Q11 ~Q 13 , Q 21 ~Q 23 , and Q 31 ~Q 33 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It may be selected from aryl groups, biphenylyl groups, and terphenylyl groups.

[0033] 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-butyl group, and "OMe" means a methoxy group.

[0034] In the present specification, the term "biphenylyl group" means a "phenyl group substituted with a phenyl group." A "biphenylyl group" is a group in which the substituent is "C 6 -C 60 It belongs to the "substituted phenyl group" which is an "aryl group."

[0035] In the present specification, the term "terphenylyl group" means a "phenyl group substituted with a biphenylyl group". 6 -C 60 Aryl-substituted C 6 -C 60 It belongs to the "substituted phenyl group" which is an "aryl group."

[0036] In this specification, unless otherwise defined, * and *' refer to the bonding sites between adjacent atoms in the chemical formula.

[0037] According to one embodiment, there is provided a fused ring compound represented by the following Chemical Formula 1: [ka] ... 1 [ka] ... 2

[0038] In formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 are independent of each other, C 5 -C 60 Carbocyclic groups and C 1 -C 60 In addition, in the formulas 1 and 2, A may be selected from the group consisting of heterocyclic groups. 11 ~A 14 may be linked to each other via a first linking group, A 21 ~A 24 may optionally be linked to each other via a second linking group.

[0039] For example, in formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 may each independently be a ring structure selected from benzene, naphthalene, fluorene, spiro-bifluorene, benzofluorene, dibenzofluorene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene, chrysene, perylene, thiophene, furan, silole, carbazole, indole, isoindole, benzofuran, benzothiophene, benzosilole, dibenzofuran, dibenzothiophene, benzocarbazole, dibenzocarbazole, and dibenzosilole, but are not limited thereto.

[0040] As another example, in Formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 may each independently be a ring structure selected from benzene, naphthalene, fluorene, phenanthrene, anthracene, triphenylene, pyrene, chrysene, perylene, carbazole, dibenzofuran, and dibenzothiophene, but are not limited thereto.

[0041] As yet another example, in Formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 may each independently be a ring structure selected from benzene, naphthalene, and carbazole, but are not limited thereto.

[0042] As yet another example, in Formulas 1 and 2, A 11 ~A 14 , and A 21 ~A 24 may be, independently of each other, benzene, but is not limited thereto.

[0043] For example, in formula 1, A 13 and A 14 , and / or A 11 and A14 can be optionally linked to each other via a first linking group, but is not limited thereto.

[0044] For example, in formula 2, A 23 and A 24 , and / or A 21 and A 24 can be optionally linked to each other via a second linking group, but is not limited to such.

[0045] The first linking group is a single bond, *-O-*', *-S-*', *-B(R 15 )-*', *-N(R 15 )-*', *-C(R 15 )(R 16 )-*' and -C(R 15 )=C(R 16 )-*', R 15 and R 16 are each independently hydrogen, C 1 -C 20 Alkyl groups, phenyl groups, biphenylyl groups, terphenylyl groups, naphthyl groups, fluorenyl groups, carbazolyl groups, dibenzofuranyl groups, and dibenzothiophenyl groups; and Deuterium (-D), C 1 -C 20 phenyl, biphenylyl, terphenylyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl and dibenzothiophenyl groups, each of which is substituted with at least one selected from alkyl, phenyl, biphenylyl, terphenylyl and naphthyl groups; * and *' may be bonding sites with adjacent atoms.

[0046] The second linking group is a single bond, *-O-*', *-S-*', *-B(R 25 )-*', *-N(R 25 )-*', *-C(R 25 )(R 26 )-*' and -C(R 25 )=C(R 26 )-*', R 25 and R 26 are each independently hydrogen, C 1 -C 20 Alkyl groups, phenyl groups, biphenylyl groups, terphenylyl groups, naphthyl groups, fluorenyl groups, carbazolyl groups, dibenzofuranyl groups, and dibenzothiophenyl groups; and Deuterium, C 1 -C 20 phenyl, biphenylyl, terphenylyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl and dibenzothiophenyl groups, each of which is substituted with at least one selected from alkyl, phenyl, biphenylyl, terphenylyl and naphthyl groups; * and *' may be bonding sites with adjacent atoms.

[0047] For example, the first linking group and the second linking group may be independently selected from a single bond, *-O-*', and *-S-*', but are not limited thereto.

[0048] In chemical formula 1, n11 is A 14 It means the number of repeating units of the formula (I) and may be selected from 0 and 1.

[0049] In chemical formula 2, n21 is A 24 It means the number of repeating units of the formula (I) and may be selected from 0 and 1.

[0050] In formulas 1 and 2, L 11 ~L 14 , and L 21 ~L 24 are, independently of each other, a single bond, *-N(R a )-*', substituted or unsubstituted C 5 -C 60 Carbocyclic groups and substituted or unsubstituted C 1 -C 60 The heterocyclic groups may be selected from, but are not limited to, heterocyclic groups.

[0051] For example, in formulas 1 and 2, L 11 ~L 14 , and L 21 ~L 24 are, independently of each other, a single bond, *-N(R a )-*', phenylene groups, naphthylene groups, fluorenylene groups, spiro-bifluorenylene groups, benzofluorenylene groups, dibenzofluorenylene groups, phenanthrenylene groups, anthracenylene groups, fluoranthenylene groups, triphenylenylene groups, pyrene groups, chrysenylene groups, perylenylene groups, thiophenylene groups, furanylene groups, silolylene groups, carbazolylene groups, indolylene groups, isoindolylene groups, benzofuranylene groups, benzothiophenylene groups, benzosilolylene groups, dibenzofuranylene groups, dibenzothiophenylene groups, benzocarbazolylene groups, dibenzocarbazolylene groups and dibenzosilolylene 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, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ) and -B(Q 31 )(Q 32a 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 triphenylenylene group, a pyrenylene group, a chrysenylene group, a perylenylene group, a thiophenylene group, a furanylene group, a silolylene group, a carbazolylene group, an indolylene group, an isoindolylene group, a benzofuranylene group, a benzothiophenylene group, a benzosilolylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, a dibenzocarbazolylene group, and a dibenzosilolylene group; Q 31 ~Q 33 are independent of each other, C 1 -C 60 It may be selected from, but is not limited to, an alkyl group, a phenyl group, a biphenylyl group, and a terphenylyl group.

[0052] As another example, in Formulas 1 and 2, L 11 ~L 14 , and L 21 ~L 24 are, independently of each other, a single bond, *-N(R a )-*', and the following chemical formulas 3-1 to 3-41, but are not limited thereto. [ka] JPEG2025032142000006.jpg28125 JPEG2025032142000007.jpg62118 JPEG2025032142000008.jpg57124 JPEG2025032142000009.jpg53126 JPEG2025032142000010.jpg78135

[0053] In chemical formulas 3-1 to 3-41, X 31is selected from O and S, X 32 is O, S, N(R 33 ) and C(R 33 )(R 34 ), R 31 ~R 34 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C 1 -C 20 Alkyl group, C 1 -C 20 Alkoxy group, phenyl group, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ) and -B(Q 31 )(Q 32 ), However, R 31 ~R 34 The carbon atoms that are not substituted by have hydrogen atoms bonded to them. Q 31 ~Q 33 are independent of each other, C 1 -C 60 selected from the group consisting of alkyl, phenyl, biphenylyl and terphenylyl groups; b31 is selected from 1, 2, 3 and 4; b32 is selected from 1, 2, 3, 4, 5, and 6; b33 is selected from 1, 2, 3, 4, 5, 6, 7 and 8; b34 is selected from 1, 2, 3, 4 and 5; b35 is selected from 1, 2 and 3; b36 is selected from 1 and 2; * and *' are bonding sites with adjacent atoms.

[0054] In chemical formulas 1 and 2, a11 to a14 and a21 to a24 are L 11 ~L 14 , and L 21 ~L 24 and may be independently selected from 0, 1, 2 and 3, but is not limited thereto.

[0055] For example, in Chemical Formulae 1 and 2, a11 to a14 and a21 to a24 may be independently selected from 0 and 1, but are not limited thereto.

[0056] In formula 1, R 11 ~R 14 are each independently a group represented by chemical formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6-C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic groups, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C10 Cycloalkyl groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It is also selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

[0057] For example, in formula 1, R 11 ~R 14 are each independently a group represented by formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C 1 -C 20 Alkyl group and C 1 -C 20 Alkoxy groups; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, a cyano group, a phenyl group, and a biphenylyl group; 1 -C 20 Alkyl group and C 1 -C 20 Alkoxy groups; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenylyl, terphenylyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentacenyl, pyrroly a phenyl group, a thiophenyl group, a furanyl group, a silolyl group, 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 indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, an isoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanyl group, acridinyl group, aphenanthrolinyl group, aphenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group nyl group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group and indolocarbazolyl group; Deuterium, -F, -Cl, -Br, -I, cyano group, C 1 -C20 Alkyl group, C 1 -C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl 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, perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cinnolinyl group, phenanyl group, anthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group -Si(Q) group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group, indolocarbazolyl group, -Si(Q) group,31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenylyl group, a terphenylyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, or a chrysenyl group, each of which is substituted with at least one selected from the group consisting of Perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cyano group, acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzo thiophenyl, naphthobenzosilolyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilolyl, imidazopyridinyl, imidazopyrimidinyl, oxazolopyridinyl, thiazolopyridinyl, benzonaphthyridinyl, azafluorenyl, azaspiro-bifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilolyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl groups; and -Si(Q 1)(Q 2 )(Q 3 ), -N(Q 1 )(Q 2 ), -B(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 , and Q 31 ~Q 33 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 It may be selected from, but is not limited to, a heteroaryl group, a monovalent non-aromatic fused polycyclic group, a monovalent non-aromatic hetero-fused polycyclic group, a biphenylyl group, and a terphenylyl group.

[0058] As another example, in formula 1, R 11 ~R 14 are each independently a group represented by formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C1 -C 20 Alkyl groups; C substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, and a cyano group 1 -C 20 Alkyl groups; Groups represented by the following chemical formulas 5-1 to 5-142; and -Si(Q 1 )(Q 2 )(Q 3 ), -N(Q 1 )(Q 2 ), -B(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ), but is not limited thereto. [ka] JPEG2025032142000012.jpg63129 JPEG2025032142000013.jpg46135 JPEG2025032142000014.jpg104147 JPEG2025032142000015.jpg44143 JPEG2025032142000016.jpg50145 JPEG2025032142000017.jpg72130 JPEG2025032142000018.jpg46132 JPEG2025032142000019.jpg105152 JPEG2025032142000020.jpg84151 JPEG2025032142000021.jpg71151 JPEG2025032142000022.jpg74155 JPEG2025032142000023.jpg104152 JPEG2025032142000024.jpg68149 JPEG2025032142000025.jpg35121

[0059] In chemical formulas 5-1 to 5-142, X 51 is O, S, N(R 51 ) and C(R 51 )(R 60 ), X 52 is N or C(R 52 ), and X 53 is N or C(R 53 ), and X 54 is N or C(R 54 ), and X 55 is N or C(R 55 ), and X 56 is N or C(R 56 ), and X 57 is N or C(R 57 ), and X 58 is N or C(R 58 ), and X 59 is N or C(R 59 ) and R 51 ~R 60 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C 1 -C 20 Alkyl group, C 1 -C 20Alkoxy group, phenyl group, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)(Q 31 ), -S(=O) 2 (Q 31 ), -P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32 ), However, R 31 ~R 34 The carbon atoms that are not substituted by have hydrogen atoms bonded to them. Q 1 ~Q 3 , and Q 31 ~Q 33 are independent of each other, C 1 -C 60 selected from the group consisting of alkyl, phenyl, biphenylyl and terphenylyl groups; b51 is selected from 1, 2, 3, 4 and 5; b52 is selected from 1, 2, 3, 4, 5, 6 and 7; b53 is selected from 1, 2, 3, 4, 5, 6, 7, 8 and 9; b54 is selected from 1, 2, 3 and 4; b55 is selected from 1, 2 and 3; b56 is selected from 1 and 2; b57 is selected from 1, 2, 3, 4, 5 and 6; * indicates the bonding site with the adjacent atom.

[0060] As yet another example, in Formula 1, R 11 ~R 14 are each independently a group represented by the formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group and a tert-butyl group; methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and tert-butyl groups substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and a cyano group; and The group may be selected from groups represented by the following chemical formulas 6-1 to 6-161, but is not limited thereto. [ka] JPEG2025032142000027.jpg68154 JPEG2025032142000028.jpg104154 JPEG2025032142000029.jpg60153 JPEG2025032142000030.jpg59150 JPEG2025032142000031.jpg59147 JPEG2025032142000032.jpg28152 JPEG2025032142000033.jpg59150 JPEG2025032142000034.jpg59147 JPEG2025032142000035.jpg98155 JPEG2025032142000036.jpg64155 JPEG2025032142000037.jpg99156 JPEG2025032142000038.jpg65155 JPEG2025032142000039.jpg101155 JPEG2025032142000040.jpg67155 JPEG2025032142000041.jpg65154 JPEG2025032142000042.jpg40155 In chemical formulas 6-1 to 6-161, i-Pr is an isopropyl group; t-Bu is a tert-butyl group; Ph is a phenyl group; 1-Naph is a 1-naphthyl group, 2-Naph is a 2-naphthyl group, * indicates the bonding site with the adjacent atom.

[0061] In formulas 1 and 2, R a , and R 21 ~R 24 are each independently a bond site, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), but R 21 ~R 24 one of which is a binding site, Q 1 ~Q 3 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C10 Cycloalkyl groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It may be selected from aryl groups, biphenylyl groups, and terphenylyl groups.

[0062] For example, in formulas 1 and 2, R a , and R 21 ~R 24 are, independently of each other, a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C 1 -C 20 Alkyl group and C 1 -C 20 Alkoxy groups; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, a cyano group, a phenyl group, and a biphenylyl group; 1 -C 20 Alkyl group and C 1 -C 20 Alkoxy groups; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenylyl, terphenylyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentacenyl, pyrroly a phenyl group, a thiophenyl group, a furanyl group, a silolyl group, 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 indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, an isoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanyl group, acridinyl group, aphenanthrolinyl group, aphenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group nyl group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group and indolocarbazolyl group; Deuterium, -F, -Cl, -Br, -I, cyano group, C 1 -C20 Alkyl group, C 1 -C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl 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, perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cinnolinyl group, phenanyl group, anthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group -Si(Q) group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group, indolocarbazolyl group, -Si(Q) group,31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenylyl group, a terphenylyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, or a chrysenyl group, each of which is substituted with at least one selected from the group consisting of Perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cyano group, acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzo thiophenyl, naphthobenzosilolyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilolyl, imidazopyridinyl, imidazopyrimidinyl, oxazolopyridinyl, thiazolopyridinyl, benzonaphthyridinyl, azafluorenyl, azaspiro-bifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilolyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl groups; and -Si(Q 1)(Q 2 )(Q 3 ), -N(Q 1 )(Q 2 ), -B(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 , and Q 31 ~Q 33 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 It may be selected from among heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic hetero-fused polycyclic groups, biphenylyl groups, and terphenylyl groups.

[0063] As another example, in Formulas 1 and 2, R a , and R 21 ~R 24 are, independently of each other, a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C1 -C 20 Alkyl groups; C substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, and a cyano group 1 -C 20 Alkyl groups; Groups represented by chemical formulas 5-1 to 5-142; and -Si(Q 1 )(Q 2 )(Q 3 ), -N(Q 1 )(Q 2 ), -B(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 are independent of each other, C 1 -C 60 It may be selected from, but is not limited to, an alkyl group, a phenyl group, a biphenylyl group, and a terphenylyl group.

[0064] As yet another example, in Formulas 1 and 2, R a , and R 21 ~R 24 are, independently of one another, a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and tert-butyl; methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and tert-butyl groups substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and a cyano group; and The group may be selected from groups represented by chemical formulas 6-1 to 6-161, but is not limited thereto.

[0065] In chemical formulas 1 and 2, b11 to b14 and b21 to b24 are each R 11 ~R 14 , and R 21 ~R 24 and may be selected from among 1, 2, 3, 4, 5 and 6, independently of one another.

[0066] In Chemical Formulae 1 and 2, c11 to c14 and c21 to c24 may be independently selected from 1, 2, 3, 4, 5 and 6, but are not limited thereto.

[0067] In one embodiment, the fused ring compound represented by Chemical Formula 1 may be represented by any one of the following Chemical Formulas 1-1 to 1-3, but is not limited thereto. [ka]

[0068] In chemical formulas 1-1 to 1-3, A 11 ~A 14 , L 11 ~L 14 , a11 to a14, and b11 to b14 refer to the explanation in Chemical Formula 1; X 11 is selected from a single bond, *-O-*' and *-S-*', R 11 ~R 14 are each independently a group represented by chemical formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

[0069] In one embodiment, the group represented by Chemical Formula 2 may be any one of Chemical Formulas 2-1 to 2-4 below, but is not limited thereto. [ka]

[0070] In chemical formulas 2-1 to 2-4, * is a binding site A 21~A 24 , L 21 ~L 24 , a21 to a24, and b21 to b24 refer to the explanation in Chemical Formula 2; R 21 ~R 24 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q 1 ), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C 3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

[0071] In another embodiment, the group represented by Chemical Formula 2 may be any one of Chemical Formulas 2-11 to 2-22 below, but is not limited thereto. [ka] JPEG2025032142000046.jpg90150 JPEG2025032142000047.jpg90150

[0072] In chemical formulas 2-11 to 2-22, * is a binding site A 21 ~A 24 , L 21 ~L 24 , a21 to a24, and b21 to b24 refer to the explanation in Chemical Formula 2; X 21 is selected from a single bond, *-O-*' and *-S-*', R 21 ~R 24 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted C 1 -C 60 Heteroaryloxy groups, substituted or unsubstituted C 1 -C 60 Heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 ), -B(Q 1 )(Q 2 ), -N(Q 1 )(Q 2 ), -P(Q 1 )(Q 2 ), -C(=O)(Q 1 ), -S(=O)(Q1), -S(=O) 2 (Q 1 ), -P(=O)(Q 1 )(Q 2 ), and -P(=S)(Q 1 )(Q 2 ), Q 1 ~Q 3 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 groups, C 1 -C 10 Heterocycloalkyl groups, C3 -C 10 Cycloalkenyl group, C 1 -C 10 Heterocycloalkenyl group, C 6 -C 60 Aryl group, C 1 -C 60 Heteroaryl groups, C 1 -C 60 Heteroaryloxy group, C 1 -C 60 C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group 1 -C 60 C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group 6 -C 60 It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

[0073] In still another embodiment, the fused ring compound represented by Chemical Formula 1 may be selected from the following compounds 1 to 86, but is not limited thereto. [ka] JPEG2025032142000049.jpg77148 JPEG2025032142000050.jpg37145 JPEG2025032142000051.jpg88148 JPEG2025032142000052.jpg83168 JPEG2025032142000053.jpg76152 JPEG2025032142000054.jpg56134 JPEG2025032142000055.jpg83149 JPEG2025032142000056.jpg40152 JPEG2025032142000057.jpg58138 JPEG2025032142000058.jpg64141 JPEG2025032142000059.jpg4562 The fused ring compound represented by Chemical Formula 1 can emit various lights such as red, green, and blue, and specifically, the fused ring compound represented by Chemical Formula 1 can emit blue light. More specifically, the fused ring compound represented by Chemical Formula 1 can emit blue light having a maximum emission wavelength of 440 nm to 480 nm, but is not limited thereto.

[0074] To effectively achieve the thermally activated delayed fluorescence (TADF) process, the difference between the lowest excited singlet energy level and the lowest excited triplet energy level (△E ST ) and large oscillator strength (f). Small △E ST and large f are in a trade-off relationship, so small △E ST However, the fused ring compound represented by Chemical Formula 1 has a small ΔE ST and large f can be satisfied simultaneously, thereby effectively achieving the thermally activated delayed fluorescence process.

[0075] As shown in the following formula 1A, the fused ring compound necessarily contains boron (B) in the core. Thus, nitrogen (N) has an energy corresponding to the highest occupied molecular orbital (HOMO), boron (B) has an energy corresponding to the lowest unoccupied molecular orbital (LUMO), and each carbon (C) adjacent to N and B also has an energy corresponding to the HOMO / LUMO alternately due to the resonance effect. In this way, the fused ring compound exhibits TADF characteristics because the HOMO and LUMO are separated at the atomic level. Therefore, it exhibits characteristics completely different from compounds containing a carbazole structure that does not contain boron (B) (i.e., compounds containing only a carbazole structure do not exhibit TADF characteristics). Due to such TADF characteristics, an organic light-emitting device containing a fused ring compound can have high efficiency. [ka] ... 1A

[0076] In addition, condensed ring compounds also have favorable luminescence transitions due to the overlap of the HOMO and LUMO caused by the multiple resonance effect.

[0077] As shown in the following formula 1B, the fused ring compound has a robust structure because it necessarily contains a carbazole ring in the core. In general, when a compound absorbs energy and then emits light while transferring the energy, the compound undergoes a structural change. The fused ring compound necessarily contains a carbazole ring, which can minimize such structural change, narrowing the full width at half maximum and suppressing vibration, which can also contribute to improving quantum efficiency. As a result, the efficiency of an organic light-emitting device including the fused ring compound can be improved and high color purity can be provided.

[0078] In order to emit blue light, the compound must have relatively high S1 and T1, and by including a carbazole ring, a compound having a relatively high bond dissociation energy can be provided. Therefore, since the fused ring compound includes a carbazole ring, the compound can have a high bond dissociation energy, and the life of an organic light-emitting device including the fused ring compound can be improved. [ka] ...1B

[0079] Furthermore, since the fused ring compound has a relatively high charge (hole or electron) transport ability, the exciton formation rate in the light-emitting layer of an organic light-emitting device employing the fused ring compound represented by Chemical Formula 1 is improved, and the organic light-emitting device can have a low driving voltage, high efficiency, long life, and high maximum quantum efficiency.

[0080] In addition, fused ring compounds have a relatively small △E ST Since the fused ring compound has a relatively low T1 ratio, TTA (triplet-triplet annihilation) and TPQ (triplet-polaron quenching), which occur at a high T1 ratio, occur relatively infrequently, thereby improving the roll-off characteristics of the organic light emitting device including the fused ring compound.

[0081] Those skilled in the art will be able to recognize how to synthesize the fused ring compound represented by Chemical Formula 1 by referring to the examples below.

[0082] At least one of the fused ring compounds represented by Chemical Formula 1 is also used between a pair of electrodes of an organic light emitting device. For example, the fused ring compound is also included in at least one layer of a hole transport region, an electron transport region, and an emitting layer. Alternatively, the fused ring compound represented by Chemical Formula 1 is also used as a capping layer material located outside a pair of electrodes of an organic light emitting device.

[0083] According to another embodiment, there is provided an organic light-emitting device comprising a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode and including a light-emitting layer, wherein the organic layer comprises one or more fused ring compounds represented by Chemical Formula 1.

[0084] In this specification, the term "organic layer" refers to any single and / or multiple layers interposed between a first electrode and a second electrode in an organic light-emitting device. The material contained in the "organic layer" is not limited to an organic material.

[0085] In this specification, "(the organic layer) contains one or more fused ring compounds" can also be interpreted as "(the organic layer) may contain one fused ring compound belonging to the category of Chemical Formula 1, or two or more different fused ring compounds belonging to the category of Chemical Formula 1."

[0086] For example, the organic layer may contain only compound 1 as a fused ring compound. In this case, compound 1 is present in the light-emitting layer of the organic light-emitting device. Alternatively, the organic layer may contain compound 1 and compound 2 as fused ring compounds. In this case, compound 1 and compound 2 are present in the same layer (e.g., compound 1 and compound 2 can both be present in the light-emitting layer) or are present in different layers (e.g., compound 1 is present in the light-emitting layer and compound 2 is present in the electron transport region).

[0087] According to one embodiment, the first electrode of the organic light-emitting element is an anode, the second electrode of the organic light-emitting element is a cathode, and the organic layer further includes a hole transport region interposed between the first electrode and the light-emitting layer, and an electron transport region interposed between the light-emitting layer and the second electrode, where the hole transport region may include a hole injection layer, a hole transport layer, a light-emitting auxiliary layer, an electron blocking layer, or any combination thereof, and the electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0088] According to one embodiment, the light-emitting layer also includes a fused ring compound represented by Chemical Formula 1. The light-emitting layer may further include a host in addition to the fused ring compound, and the content of the fused ring compound in the light-emitting layer is less than the content of the host. For example, the fused ring compound may be, but is not limited to, a thermally activated delayed fluorescence emitter (TADF emitter).

[0089] According to another embodiment, the light-emitting layer does not include a phosphorescent compound (eg, a transition metal compound), and specifically, the light-emitting layer consists of the fused ring compound represented by Chemical Formula 1 and a host.

[0090] According to yet other embodiments, at least one of the hole transport region and the light emitting layer comprises at least one of an arylamine-containing compound, an acridine-containing compound, and a carbazole-containing compound.

[0091] Alternatively, at least one of the light-emitting layer and the electron transport region may include at least one of a silicon-containing compound, a phosphine oxide-containing compound, a sulfur oxide-containing compound, a phosphorus oxide-containing compound, a triazine-containing compound, a pyrimidine-containing compound, a pyridine-containing compound, a dibenzofuran-containing compound, and a dibenzothiophene-containing compound.

[0092] [Explanation of Figure 1] 1 is a schematic 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.

[0093] Hereinafter, a structure and a method for manufacturing an organic light emitting device 10 according to an embodiment of the present invention will be described with reference to FIG.

[0094] [First electrode 110] 1, a substrate is additionally disposed below the first electrode 110 or above the second electrode 190. 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.

[0095] The first electrode 110 is formed by providing a first electrode material on the substrate using, for example, a deposition method or a sputtering method. When the first electrode 110 is an anode, the first electrode material is selected from among materials having a high work function so as to facilitate hole injection.

[0096] The first electrode 110 can be a reflective electrode, a semi-transparent electrode, or a transparent electrode. To form the first electrode 110 as a transparent electrode, the material for the first electrode is selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 Alternatively, to form the first electrode 110, which is a semi-transmissive electrode or a reflective electrode, the material for the first electrode may be selected from, but is not limited to, magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), and any combination thereof.

[0097] The first electrode 110 may have a single-layer structure, which is a single layer, or a multi-layer structure having multiple layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO, but is not limited thereto.

[0098] [Organic layer 150] The organic layer 150 is disposed on the first electrode 110. The organic layer 150 includes an emitting layer.

[0099] The organic layer 150 may further include 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.

[0100] [Hole transport region in organic layer 150] The hole transport region can have i) a monolayer structure consisting of a single layer of a single material, ii) a monolayer structure consisting of a single layer consisting of multiple different materials, or iii) a multilayer structure having multiple layers consisting of multiple different materials.

[0101] The hole transport region may include at least one layer selected from a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting auxiliary layer, and an electron blocking layer (EBL).

[0102] For example, the hole transport region may have a single layer structure consisting of a single layer made of multiple different materials, or may have a multi-layer structure of a hole injection layer / hole transport layer, a hole injection layer / hole transport layer / light emitting auxiliary layer, a hole injection layer / light emitting auxiliary layer, a hole transport layer / light emitting auxiliary layer, or a hole injection layer / hole transport layer / electron blocking layer, which are stacked in this order from the first electrode 110, but is not limited to these.

[0103] The hole transport region may include at least one selected from 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-styrenesulfonate) (PANI / PSS), CzSi, TCTA, a compound represented by the following formula 201, and a compound represented by the following formula 202. [ka] TIFF2025032142000063.tif110166JPEG2025032142000064.jpg4542 JPEG2025032142000065.jpg5453 [ka] ... 201 [ka] ...202

[0104] In chemical formulas 201 and 202, L 201 ~L 204 are each independently a substituted or unsubstituted C 3 -C 10 Cycloalkylene group, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene groups, 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 is selected from the group consisting of a heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed polycyclic heterocyclic group; L 205 *-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 10Heterocycloalkylene groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl C 1 -C 10 Heterocycloalkenylene group, substituted or unsubstituted C 6 -C 60 Arylene group, substituted or unsubstituted C 1 -C 60 is selected from the group consisting of a heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed polycyclic heterocyclic group; xa1 to xa4 are each independently selected from integers of 0 to 3; xa5 is selected from an integer from 1 to 10; R 201 ~R 204 , and Q 201 are each independently a substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 It may be selected from among a heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.

[0105] For example, in formula 202, R 201 and R 202are optionally linked to each other via a single bond, a dimethyl-methylene group or a diphenyl-methylene group, and R 203 and R 204 are optionally also linked to each other via a single bond, a dimethyl-methylene group or a diphenyl-methylene group.

[0106] According to one embodiment, in formulas 201 and 202: L 201 ~L 205 are independent of each other, a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an indacenylene group, an acenaphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenalenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a naphthacenylene group, a picenylene group, perylenylene groups, pentaphenylene groups, hexacenylene groups, pentacenylene groups, rubicenylene groups, coronenylene groups, ovalenylene groups, thiophenylene groups, furanylene groups, carbazolylene groups, indolylene groups, isoindolylene groups, benzofuranylene groups, benzothiophenylene groups, dibenzofuranylene groups, dibenzothiophenylene groups, benzocarbazolylene groups, dibenzocarbazolylene groups, dibenzosilolylene groups, and pyridinylene 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, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, C 1 -C 10Terphenylyl groups substituted with alkyl groups, terphenylyl groups substituted with -F, pentalenyl groups, indenyl groups, naphthyl groups, azulenyl groups, heptalenyl groups, indacenyl groups, acenaphthyl groups, fluorenyl groups, spiro-bifluorenyl groups, benzofluorenyl groups, dibenzofluorenyl groups, phenalenyl groups, phenanthrenyl groups, anthracenyl groups, fluoranthenyl groups, triphenylenyl groups, pyrenyl groups, chrysenyl groups, na Futhacenyl group, picenyl group, perylenyl group, pentaphenylyl 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, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, -Si(Q 31 )(Q 32 )(Q 33 ) and -N(Q 31 )(Q 32 ), a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an indacenylene group, an acenaphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenalenylene group, a phenanylene group, anthrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenylene group, naphthacenylene group, picenylene group, perylenylene group, pentaphenylene group, hexacenylene group, pentacenylene group, rubycenylene group, coronenylene group, ovalenylene group, thiophenylene group, furanylene group, carbazolylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilolylene group and pyridinylene group; Q 31 ~Q 33 are independent of each other, C 1 -C 10 Alkyl group, C1 -C 10 It may be selected from the group consisting of alkoxy, phenyl, biphenylyl, terphenylyl and naphthyl groups.

[0107] According to another embodiment, xa1 to xa4 are also 0, 1 or 2, independently of one another.

[0108] According to yet other embodiments, xa5 may be 1, 2, 3 or 4.

[0109] According to yet another embodiment, R 201 ~R 204 , and Q 201 are each independently a phenyl group, a biphenylyl group, a terphenylyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthyl group, tacenyl, picenyl, perylenyl, pentaphenylyl, hexacenyl, pentacenyl, rubicenyl, coronenyl, ovalenyl, thiophenyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilolyl and pyridinyl 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, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, C 1 -C 10Terphenylyl groups substituted with alkyl groups, terphenylyl groups substituted with -F, pentalenyl groups, indenyl groups, naphthyl groups, azulenyl groups, heptalenyl groups, indacenyl groups, acenaphthyl groups, fluorenyl groups, spiro-bifluorenyl groups, benzofluorenyl groups, dibenzofluorenyl groups, phenalenyl groups, phenanthrenyl groups, anthracenyl groups, fluoranthenyl groups, triphenylenyl groups, pyrenyl groups, chrysenyl groups, na Futhacenyl group, picenyl group, perylenyl group, pentaphenylyl 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, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, -Si(Q 31 )(Q 32 )(Q 33 ) and -N(Q 31 )(Q 32 phenyl group, biphenylyl group, terphenylyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, 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, picenyl group, perylenyl group, pentaphenylyl 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, a benzocarbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, and a pyridinyl group; Q 31 ~Q 33 For the explanation of the above, please refer to the description in this specification.

[0110] According to yet another embodiment, in formula 201, R 201 ~R 203 At least one of, independently of each other, fluorenyl, spiro-bifluorenyl, carbazolyl, dibenzofuranyl and dibenzothiophenyl 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, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, C 1 -C 10 The phenyl group substituted with an alkyl group, a phenyl group substituted with -F, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group, each of which is substituted with at least one selected from the group consisting of a phenyl group substituted with an alkyl group, a phenyl group substituted with -F, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group, but is not limited thereto.

[0111] According to yet another embodiment, in formula 202, i) R 201 and R 202 are also linked to each other via a single bond, and / or ii) R 203 and R 204 may be linked to each other via a single bond.

[0112] According to yet another embodiment, in formula 202, R 201 ~R 204 At least one of the Carbazolyl 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 20Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenylyl group, terphenylyl group, C 1 -C 10 A phenyl group substituted with an alkyl group, a phenyl group substituted with -F, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group; and a carbazolyl group substituted with at least one selected from the group consisting of a dibenzothiophenyl group and a dibenzothiophenyl group, but is not limited thereto.

[0113] The compound represented by formula 201 may be represented by formula 201A below. [ka] ... 201A

[0114] For example, the compound represented by chemical formula 201 can also be represented by the following chemical formula 201A(1), but is not limited thereto. [ka] ... 201A(1) As yet another example, the compound represented by formula 201 may be represented by the following formula 201A-1, but is not limited thereto. [ka] ... 201A-1 On the other hand, the compound represented by chemical formula 202 can also be represented by the following chemical formula 202A: [ka] ... 202A According to yet another embodiment, the compound represented by formula 202 may be represented by formula 202A-1 below: [ka] ... 202A-1

[0115] Chemical formulas 201A, 201A(1), 201A-1, 202A and 202A-1, L 201 ~L 203 , xa1 to xa3, xa5, and R 202 ~R 204 For the description of R 211 and R 212 The explanation for R 203 Please refer to the explanation of R 213 ~R 217 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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, biphenylyl group, terphenylyl group, C 1 -C 10 a phenyl group substituted with an alkyl group, a phenyl group substituted with -F, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, It may be selected from a picenyl group, a perylenyl group, a pentaphenylyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a thiophenyl group, a furanyl group, a carbazolyl group, an indolyl group, an isoindolyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, and a pyridinyl group.

[0116] The hole transport region may contain at least one compound selected from the following compounds HT1 to HT39, but is not limited thereto. [ka] JPEG2025032142000074.jpg95159 JPEG2025032142000075.jpg94159 JPEG2025032142000076.jpg101158 JPEG2025032142000077.jpg92159 JPEG2025032142000078.jpg92159 TIFF2025032142000079.tif34122

[0117] The thickness of the hole transport region may be about 10 nm to about 1000 nm, for example, about 10 nm to about 100 nm. If the hole transport region includes at least one layer of a hole injection layer and a hole transport layer, the thickness of the hole injection layer may be about 10 nm to about 100 nm, for example, about 10 nm to about 100 nm, and the thickness of the hole transport layer may be about 5 nm to about 200 nm, for example, 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 properties can be obtained without a substantial increase in driving voltage.

[0118] The light-emitting auxiliary layer is a layer that compensates for the optical resonance distance according to the wavelength of light emitted from the light-emitting layer to increase light emission efficiency, and the electron blocking layer is a layer that prevents electron injection from the electron transport region. The light-emitting auxiliary layer and the electron blocking layer may include the above-mentioned materials.

[0119] [p-dopant] In addition to the materials described above, the hole transport region may further include a charge generating material to improve electrical conductivity. The charge generating material may be uniformly or non-uniformly dispersed in the hole transport region.

[0120] The charge generating material can be, for example, a p-dopant.

[0121] According to one embodiment, the LUMO of the p-dopant may be less than or equal to -3.5 eV.

[0122] The p-dopant may include at least one selected from the group consisting of quinone derivatives, metal oxides, and cyano group-containing compounds, but is not limited thereto.

[0123] For example, p-dopants include 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; 1,4,5,8,9,12-Hexaazatriphenylene-hexacarbonitrile (HAT-CN); and The compound may include at least one selected from the following compounds represented by the following formula 221: <hat-cn>

change

[0124] In chemical formula 221, R 221 ~R 223 are each independently a substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 1 -C 60 a heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group; 221 ~R 223 At least one of the C substituted with a cyano group, -F, -Cl, -Br, -I, or -F 1 -C 20 Alkyl group, C substituted with -Cl 1 -C 20 C substituted with alkyl group, -Br 1 -C 20 C substituted with alkyl group and -I 1 -C 20 It has at least one substituent selected from the group consisting of alkyl groups.

[0125] [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 may be 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 may have a structure in which two or more layers selected from the red light emitting layer, the green light emitting layer, and the blue light emitting layer are stacked in contact with each other or spaced apart from each other, or may have a structure in which two or more materials selected from the red light emitting material, the green light emitting material, and the blue light emitting material are mixed without layer division, and may emit white light.

[0126] The light-emitting layer may include a host and a dopant. The dopant may include a fused ring compound represented by Chemical Formula 1.

[0127] The content of the dopant in the light-emitting layer may generally be selected in the range of about 0.01 parts by weight to about 30 parts by weight relative to about 100 parts by weight of the host, but is not limited thereto.

[0128] The thickness of the light-emitting layer may be about 10 nm to about 100 nm, for example, about 20 nm to about 60 nm. When the thickness of the light-emitting layer satisfies the above-mentioned range, excellent light-emitting characteristics can be exhibited without a substantial increase in driving voltage.

[0129] [Host in the light-emitting layer] The host may include a compound represented by the following formula 301: [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ...301

[0130] In chemical formula 301, Ar 301 is a substituted or unsubstituted C 5 -C 60 Carbocyclic groups or substituted or unsubstituted C 1 -C 60 is a heterocyclic group, xb11 is 1, 2 or 3; L 301 is a substituted or unsubstituted C 3 -C 10 Cycloalkylene group, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene groups, 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 is selected from the group consisting of a heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed polycyclic heterocyclic group; xb1 is selected from integers from 0 to 5; R 301 is deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, substituted or unsubstituted C 1 -C 60 Alkyl groups, substituted or unsubstituted C 2 -C 60 Alkenyl groups, substituted or unsubstituted C 2 -C 60 Alkynyl groups, substituted or unsubstituted C 1 -C 60 Alkoxy groups, substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic groups, -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 integers from 1 to 5; Q 301 ~Q 303 are independent of each other, C 1 -C 10 Alkyl group, C 1 -C 10 It may be selected from, but is not limited to, an alkoxy group, a phenyl group, a biphenylyl group, a terphenylyl group, and a naphthyl group.

[0131] According to one embodiment, in formula 301, Ar 301 teeth, naphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, naphthacenyl, picenyl, perylenyl, pentaphenyl, indenoanthracenyl, dibenzofuranyl, and dibenzothiophenyl 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, biphenylyl group, terphenylyl 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 a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, an indenoanthracenyl group, a dibenzofuranyl group and a dibenzothiophenyl group; Q 31 ~Q 33 are independent of each other, C 1 -C 10 Alkyl group, C 1 -C 10 It may be selected from, but is not limited to, an alkoxy group, a phenyl group, a biphenylyl group, a terphenylyl group, and a naphthyl group.

[0132] In the formula 301, if xb11 is 2 or more, 2 or more Ar 301 may be linked to each other via a single bond.

[0133] According to another embodiment, the compound represented by formula 301 may also be represented by formula 301-1 or 301-2 below. [ka] ... 301-1 [ka] ... 301-2

[0134] Chemical formula 301-1 to 301-2: A 301 ~A 304 are each independently selected from benzene, naphthalene, phenanthrene, fluoranthene, triphenylene, pyrene, chrysene, pyridine, pyrimidine, indene, fluorene, spiro-bifluorene, benzofluorene, dibenzofluorene, indole, carbazole, benzocarbazole, dibenzocarbazole, furan, benzofuran, dibenzofuran, naphthofuran, benzonaphthofuran, dinaphthofuran, thiophene, benzothiophene, dibenzothiophene, naphthothiophene, benzonaphthothiophene and dinaphthothiophene; X 301 is O, S or N-[(L 304 ) xb4 -R 304 ], R 311 ~R 314 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C 1 -C 20 Alkyl group, C 1 -C 20 Alkoxy group, phenyl group, biphenylyl group, terphenylyl 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 ), xb22 and xb23 are independently 0, 1 or 2; L 301 , xb1, R 301 , and Q 31 ~Q 33 For the description of L 302 ~L 304 The explanations for L 301 Please refer to the explanation of For the explanation of xb2 to xb4, refer to the explanation of xb1 independently. R 302 ~R 304 The explanations for each are independent of each other, R 301 Please refer to the explanation about.

[0135] For example, in formulas 301, 301-1 and 301-2, L 301 ~L 304 are independent of each other, Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenylene group, perylenylene group, pentaphenylene group, hexacenylene group, pentacenylene group, thiophenylene group, furanylene group, carbazolylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilolylene group, pyridinylene group, imidazolylene group, pyrazolylene group, thiazolylene group , isothiazolylene groups, oxazolylene groups, isoxazolylene groups, thiadiazolylene groups, oxadiazolylene groups, pyrazinylene groups, pyrimidinylene groups, pyridazinylene groups, triazinylene groups, quinolinylene groups, isoquinolinylene groups, benzoquinolinylene groups, phthalazinylene groups, naphthyridinylene groups, quinoxalinylene groups, quinazolinylene groups, cinnolinylene groups, phenanthridinylene groups, acridinylene groups, phenanthrolinylene groups, phenazinylene groups, benzimidazolylene groups, isobenzothiazolylene groups, benzoxazolylene groups, isobenzoxazolylene groups, triazolylene groups, tetrazolylene groups, imidazopyridinylene groups, imidazopyrimidinylene groups, and azacarbazolylene 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, biphenylyl group, terphenylyl 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, pentaphenylyl 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, pyridyl ... azolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an 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 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 triphenylenylene group, a pyrenylene group, a chrysenylene group, a perylenylene group, a pentaphenylene group, a hexacenylene group, a pentacenylene group, a thiophenylene group, a furanylene group, a carbazolylene group, an indolylene group, an isoindolylene group, a benzofuranylene group, a benzothiophenylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, a dibenzocarbazolylene group, a dibenzosilolylene group, a pyridinylene group, an imidazolylene group, or a pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isoxazolylene group, a thiadiazolylene group, an oxadiazolylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a triazinylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylene group, a naphthyridinylene group, a quinoxalinylene group, a quinazolinylene group, a cinnolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a phenazinylene group, a benzimidazolylene group, an isobenzothiazolylene group, a benzoxazolylene group, an isobenzoxazolylene group, a triazolylene group, a tetrazolylene group, an imidazopyridinylene group, an imidazopyrimidinylene group, and an azacarbazolylene group; Q 31 ~Q 33 For an explanation of this, please refer to the description in this specification.

[0136] As another example, in formulas 301, 301-1 and 301-2, R 301 ~R 304 are independent of each other, Phenyl, biphenylyl, terphenylyl, naphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentaphenylyl, hexacenyl, pentacenyl, thiophenyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilolyl, pyridinyl, imidazolyl, pyrazolyl groups, thiazolyl groups, isothiazolyl groups, oxazolyl groups, isoxazolyl groups, thiadiazolyl groups, oxadiazolyl groups, pyrazinyl groups, pyrimidinyl groups, pyridazinyl groups, triazinyl groups, quinolinyl groups, isoquinolinyl groups, benzoquinolinyl groups, phthalazinyl groups, naphthyridinyl groups, quinoxalinyl groups, quinazolinyl groups, cinnolinyl groups, phenanthridinyl groups, acridinyl groups, phenanthrolinyl groups, phenazinyl groups, benzimidazolyl groups, isobenzothiazolyl groups, benzoxazolyl groups, isobenzoxazolyl groups, triazolyl groups, tetrazolyl groups, imidazopyridinyl groups, imidazopyrimidinyl groups and azacarbazolyl 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, biphenylyl group, terphenylyl 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, pentaphenylyl 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, pyridyl ... azolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an 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 biphenylyl group, a terphenylyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentaphenylyl group, a hexacenyl group, a pentacenyl group, a thiophenyl group, a furanyl group, a carbazolyl group, an indolyl group, an isoindolyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, a pyridinyl group, an imidazo a aryl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group and an azacarbazolyl group; Q 31 ~Q 33 For an explanation of this, please refer to the description in this specification.

[0137] As yet another example, the host may include an alkaline earth metal complex. For example, the host may be selected from the group consisting of a Be complex (e.g., compound H55 below), a Mg complex, and a Zn complex.

[0138] The host may include at least one selected from 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'-biphenylyl (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-(diphenylamino)phenyl)cyclohexyl)phenyl)diphenylphosphine oxide (POPCPA), DPEPO, and the following compounds H1 to H55, but is not limited thereto. [ka] JPEG2025032142000086.jpg4463 JPEG2025032142000087.jpg4250 JPEG2025032142000088.jpg82146 JPEG2025032142000089.jpg66146 JPEG2025032142000090.jpg88143 JPEG2025032142000091.jpg67164 JPEG2025032142000092.jpg93151JPEG2025032142000093.jpg70151 JPEG2025032142000094.jpg65151

[0139] The host may be variously modified such that it contains only one type of compound or two or more different compounds.

[0140] [Dopants included in the light-emitting layer of organic layer 150] The dopant may include a fused ring compound represented by Chemical Formula 1 herein. For an explanation of the fused ring compound, please refer to the description herein.

[0141] [Electron transport region in organic layer 150] The electron transport region can have i) a monolayer structure consisting of a single layer of a single material, ii) a monolayer structure consisting of a single layer of multiple different materials, or iii) a multilayer structure having multiple layers consisting of multiple different materials.

[0142] The electron transport region may include at least one layer selected from, but is not limited to, a buffer layer, a hole blocking layer, an electron modulating layer, an electron transport layer (ETL), and an electron injection layer.

[0143] For example, the electron transport region may have a structure such as, but is not limited to, an electron transport layer / electron injection layer, a hole blocking layer / electron transport layer / electron injection layer, an electron control layer / electron transport layer / electron injection layer, or a buffer layer / electron transport layer / electron injection layer, which are stacked in this order from the light emitting layer.

[0144] An electron transport region (eg, a buffer layer, a hole blocking layer, an electron modulating layer, or an electron transport layer in an electron transport region) may include a non-metal-containing compound that includes at least one π-electron deficient nitrogen-containing ring.

[0145] A "π-electron deficient nitrogen-containing ring" is a ring-forming moiety (partial structure) having at least one *-N=*' moiety. 1 -C 60 It means a heterocyclic group.

[0146] For example, the "π-electron deficient nitrogen-containing ring" is i) a 5- to 7-membered heteromonocyclic group having at least one *-N=*' moiety, ii) a heteropolycyclic group in which two or more of the 5- to 7-membered heteromonocyclic groups having at least one *-N=*' moiety are condensed with each other, or iii) a heteropolycyclic group in which at least one of the 5- to 7-membered heteromonocyclic groups having at least one *-N=*' moiety and at least one C 5 -C 60 A heteropolycyclic group in which carbocyclic groups are condensed with each other may also be used.

[0147] Specific examples of the π-electron deficient nitrogen-containing ring include, but are not limited to, imidazole, pyrazole, thiazole, isothiazole, oxazole, isoxazole, pyridine, pyrazine, pyrimidine, pyridazine, indazole, purine, quinoline, isoquinoline, benzoquinoline, phthalazine, naphthyridine, quinoxaline, quinazoline, cinnoline, phenanthridine, acridine, phenanthroline, phenazine, benzimidazole, isobenzothiazole, benzoxazole, isobenzoxazole, triazole, tetrazole, oxadiazole, triazine, thiadiazole, imidazopyridine, imidazopyrimidine, and azacarbazole.

[0148] For example, the electron transport region may include a compound represented by formula 601 below. [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 ...601

[0149] In chemical formula 601, Ar 601 is a substituted or unsubstituted C 5 -C 60 Carbocyclic groups or substituted or unsubstituted C 1 -C 60 is a heterocyclic group, xe11 is 1, 2 or 3, L 601 is a substituted or unsubstituted C 3 -C 10 Cycloalkylene group, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene groups, 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 is selected from the group consisting of a heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed polycyclic heterocyclic group; xe1 is selected from integers from 0 to 5, R 601 is a substituted or unsubstituted C 3 -C 10 Cycloalkyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl groups, substituted or unsubstituted C 3 -C 10 Cycloalkenyl groups, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl groups, substituted or unsubstituted C 6 -C 60 Aryl groups, substituted or unsubstituted C 6 -C 60 Aryloxy groups, substituted or unsubstituted C 6 -C 60 Arylthio groups, substituted or unsubstituted C 1 -C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic groups, -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 ~Q 603 are independent of each other, C 1 -C 10 Alkyl group, C 1 -C 10 an alkoxy group, a phenyl group, a biphenylyl group, a terphenylyl group, or a naphthyl group; xe21 is selected from integers of 1 to 5.

[0150] According to one embodiment, xe11 Ar 601 , and xe21 R 601 At least one of them may contain a π-electron deficient nitrogen-containing ring as described above.

[0151] According to one embodiment, the ring Ar 601 teeth, benzene, naphthalene, fluorene, spiro-bifluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentaphene, indenoanthracene, dibenzofuran, dibenzothiophene, carbazole, imidazole, pyrazole, thiazole, isothiazole, oxazole, isoxazole, pyridine, pyrazine, pyrimidine, pyridazine, indazole, purine, quinoline, isoquinoline, benzoquinoline, phthalazine, naphthyridine, quinoxaline, quinazoline, cinnoline, phenanthridine, acridine, phenanthroline, phenazine, benzimidazole, isobenzothiazole, benzoxazole, isobenzoxazole, triazole, tetrazole, oxadiazole, triazine, thiadiazole, imidazopyridine, imidazopyrimidine and azacarbazole; 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, biphenylyl group, terphenylyl group, naphthyl group, -Si(Q 31 )(Q 32 )(Q 33 ), -S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 benzene, naphthalene, fluorene, spiro-bifluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene group, chrysene group, naphthacene group, picene group, perylene group, pentaphene group, indenoanthracene, dibenzofuran, dibenzothiophene, carbazole, imidazole, pyrazole, thiazole, isothiazole, oxazole, isoxazole, pyridine, pyrazine, pyrimidine, pyridazine, indazole, purine, quinoline, isoquinoline, benzoquinoline, phthalazine, naphthyridine, quinoxaline, quinazoline, cinnoline, phenanthridine, acridine, phenanthroline, phenazine, benzimidazole, isobenzothiazole, benzoxazole, isobenzoxazole, triazole, tetrazole, oxadiazole, triazine, thiadiazole, imidazopyridine, imidazopyrimidine and azacarbazole; Q 31 ~Q 33 are independent of each other, C 1 -C 10 Alkyl group, C 1 -C 10 It may be selected from the group consisting of alkoxy, phenyl, biphenylyl, terphenylyl and naphthyl groups.

[0152] In the formula 601, if xe11 is 2 or more, 2 or more Ar 601 may be linked to each other via a single bond.

[0153] According to another embodiment, the compound represented by formula 601 is Ar 601 may be an anthracene group.

[0154] According to yet another embodiment, the compound represented by 601 may be represented by the following chemical formula 601-1: [ka] ... 601-1

[0155] In the chemical formula 601-1, X 614 is N or C(R 614 ), and X 615 is N or C(R 615 ), and X 616 is N or C(R 616 ), and X 614 ~X 616 At least one of is N, L 611 ~L 613 are independent of each other, L 601 Please refer to the explanation of xe611~xe613 are independent of each other, please refer to the explanation of xe1. R 611 ~R 613 are, independently of each other, R 601 Please refer to the explanation of R 614 ~R 616 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C 1 -C 20 Alkyl group, C 1 -C 20 It may be selected from the group consisting of alkoxy, phenyl, biphenylyl, terphenylyl and naphthyl groups.

[0156] According to one embodiment, in formulas 601 and 601-1, L 601 , and L 611 ~L 613 are independent of each other, Phenylene group, naphthylene group, fluorenylene group, spiro-bifluorenylene group, benzofluorenylene group, dibenzofluorenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenylene group, perylenylene group, pentaphenylene group, hexacenylene group, pentacenylene group, thiophenylene group, furanylene group, carbazolylene group, indolylene group, isoindolylene group, benzofuranylene group, benzothiophenylene group, dibenzofuranylene group, dibenzothiophenylene group, benzocarbazolylene group, dibenzocarbazolylene group, dibenzosilolylene group, pyridinylene group, imidazolylene group, pyrazolylene group, thiazolylene group , isothiazolylene groups, oxazolylene groups, isoxazolylene groups, thiadiazolylene groups, oxadiazolylene groups, pyrazinylene groups, pyrimidinylene groups, pyridazinylene groups, triazinylene groups, quinolinylene groups, isoquinolinylene groups, benzoquinolinylene groups, phthalazinylene groups, naphthyridinylene groups, quinoxalinylene groups, quinazolinylene groups, cinnolinylene groups, phenanthridinylene groups, acridinylene groups, phenanthrolinylene groups, phenazinylene groups, benzimidazolylene groups, isobenzothiazolylene groups, benzoxazolylene groups, isobenzoxazolylene groups, triazolylene groups, tetrazolylene groups, imidazopyridinylene groups, imidazopyrimidinylene groups, and azacarbazolylene 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, biphenylyl group, terphenylyl 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, pentaphenylyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzoca rubazolyl 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 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 triphenylenylene group, a pyrenylene group, a chrysenylene group, a perylenylene group, a pentaphenylene group, a heptane group, ... heptane group, a heptane group, a heptane group, a heptane group, a heptane group, a heptane group, a heptane group, a heptane group, a heptane group, a a xacenylene group, a pentacenylene group, a thiophenylene group, a furanylene group, a carbazolylene group, an indolylene group, an isoindolylene group, a benzofuranylene group, a benzothiophenylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, a dibenzocarbazolylene group, a dibenzosilolylene group, a pyridinylene group, an imidazolylene group, a pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isoxazolylene group, a thiadiazolylene group, an oxadiazolylene group, a pyrazinylene group, a pyrimidinylene group, a 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, benzoxazolylene group, isobenzoxazolylene group, triazolylene group, tetrazolylene group, imidazopyridinylene group, imidazopyrimidinylene group and azacarbazolylene group; may be selected from the group consisting of, but not limited to, azacarbazolylene group, benzoxazolylene group, isobenzoxazolylene group, benzoxazolylene group, isobenzoxazolylene group, triazolylene group, tetrazolylene group, imidazopyridinylene group, imidazopyrimidinylene group and azacarbazolylene group.

[0157] According to another embodiment, in formulae 601 and 601-1, xe1 and xe611 to xe613 may be 0, 1 or 2, independently of each other.

[0158] According to yet another embodiment, in formulas 601 and 601-1, R 601 , and R 611 ~R 613 are independent of each other, Phenyl, biphenylyl, terphenylyl, naphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentaphenylyl, hexacenyl, pentacenyl, thiophenyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilolyl, pyridinyl, imidazolyl, pyrazolyl, an allyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, and an 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, biphenylyl group, terphenylyl 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, pentaphenylyl group, hexacenyl group, pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzo A carbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, a pyridinyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazo a phenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentaaryl group, ... pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl group, a pentaaryl a phenylyl group, a hexacenyl group, a pentacenyl group, a thiophenyl group, a furanyl group, a carbazolyl group, an indolyl group, an isoindolyl group, a benzofuranyl group, a benzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, a pyridinyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, an oxadiazolyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group,isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl and azacarbazolyl groups; and -S(=O) 2 (Q 601 ) and -P(=O)(Q 601 )(Q 602 ); Q 601 and Q 602 For the explanation of the above, please refer to the description in this specification.

[0159] The electron transport region may contain at least one compound selected from the following compounds ET1 to ET36, but is not limited thereto. [ka] JPEG2025032142000097.jpg40151 JPEG2025032142000098.jpg59151 JPEG2025032142000099.jpg71164 JPEG2025032142000100.jpg56151 JPEG2025032142000101.jpg68164 JPEG2025032142000102.jpg72161 JPEG2025032142000103.jpg50164 JPEG2025032142000104.jpg42135 JPEG2025032142000105.jpg55164 JPEG2025032142000106.jpg50151 JPEG2025032142000107.jpg57164

[0160] Alternatively, the electron transport region may comprise at least one compound selected from 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, diphenyl(4-(triphenylsilyl)phenyl)-phosphine oxide (TSPO1), TPBI, and DPEPO. [ka] JPEG2025032142000109.jpg4858 JPEG2025032142000110.jpg4644 JPEG2025032142000111.jpg4250

[0161] The thickness of the buffer layer, the hole blocking layer, or the electron control layer may be, independently of one another, about 2 nm to about 100 nm, for example, about 3 nm to about 30 nm. When the thickness of the buffer layer, the hole blocking layer, or the electron control layer satisfies the above-mentioned range, excellent hole blocking properties or electron control properties can be obtained without a substantial increase in driving voltage.

[0162] The thickness of the electron transport layer may be about 10 nm to about 100 nm, for example, about 15 nm to about 50 nm. When the thickness of the electron transport layer satisfies the above-mentioned range, satisfactory electron transport properties can be obtained without a substantial increase in driving voltage.

[0163] The electron transport region (for example, the electron transport layer of the electron transport region) may further contain a metal-containing material in addition to the materials described above.

[0164] The metal-containing material may include at least one selected from an alkali metal complex and an alkaline earth metal complex. The metal ion of the alkali metal complex may be selected from Li ion, Na ion, K ion, Rb ion, and Cs ion, and the metal ion of the alkaline earth metal complex may be selected from Be ion, Mg ion, Ca ion, Sr ion, and Ba ion. The ligands coordinated to the metal ion of the alkali metal complex and the alkaline earth metal complex may be independently selected from hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxydiphenyloxadiazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, and cyclopentadiene, but are not limited thereto.

[0165] 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. [ka]

[0166] The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 190. The electron injection layer can be in direct contact with the second electrode 190.

[0167] The electron injection layer can have i) a single layer structure consisting of a single layer made of a single material, ii) a single layer structure consisting of a single layer made of a plurality of different materials, or iii) a multilayer structure having multiple layers made of a plurality of different materials.

[0168] The electron injection layer may comprise 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.

[0169] The alkali metal may be selected from Li, Na, K, Rb and Cs. According to one embodiment, the alkali metal may also be Li, Na or Cs. According to another embodiment, the alkali metal may also be Li or Cs, but is not limited thereto.

[0170] The alkaline earth metal may be selected from Mg, Ca, Sr and Ba.

[0171] The rare earth metal may be selected from Sc, Y, Ce, Tb, Yb and Gd.

[0172] The aforementioned alkali metal compounds, alkaline earth metal compounds and rare earth metal compounds may be selected from among oxides and halides (e.g., fluorides, chlorides, bromides, iodides, etc.) of alkali metals, alkaline earth metals and rare earth metals.

[0173] Alkali metal compounds include Li 2 O, Cs 2 OK 2 The alkali metal compound is also selected from among alkali metal oxides such as LiF, LiO, and alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, RbI. According to one embodiment, the alkali metal compound is LiF, Li 2 It may be selected from, but is not limited to, O, NaF, LiI, NaI, CsI, and KI.

[0174] Alkaline earth metal compounds are BaO, SrO, CaO, Ba x Sr 1-x O(0 <x<1)、Ba x Ca 1-x It may be selected from alkaline earth metal compounds such as O(0 < x < 1). According to one embodiment, the alkaline earth metal compound may be selected from, but not limited to, BaO, SrO, and CaO.

[0175] The rare earth metal compound may be YbF 3 , ScF 3 , ScO 3 , Y 2 O 3 , Ce 2 O 3 , GdF 3 and TbF 3 may be selected from. According to one example, the rare earth metal compound may be YbF 3 , ScF 3 , TbF 3 , YbI 3 , ScI 3 , TbI 3 may be selected from, but not limited to, these.

[0176] The alkali metal complex, alkaline earth metal complex, and rare earth metal complex contain metal ions of the alkali metal, alkaline earth metal, and rare earth metal as described above. The ligands coordinated to the metal ions of the alkali metal complex, alkaline earth metal complex, and rare earth metal complex may be independently selected from, but not limited to, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxydiphenyloxadiazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, and cyclopentadiene.

[0177] The electron injection layer may be composed of only the above-mentioned alkali metal, alkaline earth metal, rare earth metal, alkali metal compound, alkaline earth metal compound, rare earth metal compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or any combination thereof, or may further contain an organic substance. When the electron injection layer further contains an organic substance, the alkali metal, alkaline earth metal, rare earth metal, alkali metal compound, alkaline earth metal compound, rare earth metal compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or any combination thereof may be uniformly or non-uniformly dispersed in a matrix composed of an organic substance.

[0178] The thickness of the electron injection layer may be about 0.1 nm to about 10 nm, or about 0.3 nm to about 9 nm. When the thickness of the electron injection layer satisfies the above-mentioned range, satisfactory electron injection characteristics can be obtained without a substantial increase in driving voltage.

[0179] [Second electrode 190] The second electrode 190 is disposed on the organic layer 150. The second electrode 190 may be a cathode, which is an electron injecting 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, each having a low work function.

[0180] The second electrode 190 may include at least one selected from the group consisting of lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-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.

[0181] The second electrode 190 can have a single layer structure, which is a single layer, or a multi-layer structure having multiple layers.

[0182] [Explanation of Figures 2 to 4] The organic light-emitting element 20 in 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 this order, the organic light-emitting element 30 in FIG. 3 has a structure in which a first electrode 110, an organic layer 150, a second electrode 190, and a second capping layer 220 are stacked in this order, and the organic light-emitting element 40 in FIG. 4 has a structure in which a first capping layer 210, a first electrode 110, an organic layer 150, a second electrode 190, and a second capping layer 220 are stacked in this order.

[0183] 2 to 4, the description of the first electrode 110, the organic layer 150, and the second electrode 190 refer to the description of FIG.

[0184] Light generated in the light-emitting layer in the organic layer 150 of the organic light-emitting element 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 light generated in the light-emitting layer in the organic layer 150 of the organic light-emitting element 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.

[0185] The first capping layer 210 and the second capping layer 220 may serve to improve external light emission efficiency according to the principle of constructive interference.

[0186] The first capping layer 210 and the second capping layer 220 may be, independently of each other, 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.

[0187] At least one of the first capping layer 210 and the second capping layer 220 may independently include at least one material selected from the group consisting of a carbocyclic compound, a heterocyclic compound, an amine-based compound, a porphine derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, and an alkaline earth metal complex. The carbocyclic compound, the heterocyclic compound, and the amine-based compound may be optionally substituted with a substituent containing at least one element selected from the group consisting of O, N, S, Se, Si, F, Cl, Br, and I. According to an embodiment, at least one of the first capping layer 210 and the second capping layer 220 may independently include an amine-based compound.

[0188] According to other embodiments, at least one of the first capping layer 210 and the second capping layer 220 may, independently of each other, include a compound represented by formula 201 or a compound represented by formula 202.

[0189] According to yet another embodiment, at least one of the first capping layer 210 and the second capping layer 220 may contain, independently of each other, a compound selected from compounds HT28 to HT33, and compounds CP1 to CP5 below, but is not limited thereto. [ka]

[0190] The organic light-emitting device has been described above with reference to FIGS. 1 to 4, but is not limited thereto.

[0191] Each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region may be formed in a predetermined region using various methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) method, inkjet printing, laser printing, and laser induced thermal imaging (LITI) method.

[0192] When each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region are formed by vacuum deposition, the deposition conditions are, for example, a deposition temperature of about 100° C. to about 500° C., a deposition temperature of about 10 -8 Torr ~ approx. 10 -3 The vacuum level may be selected within the range of a vacuum of 100 torr and a deposition rate of about 0.001 nm / sec to about 10 nm / sec, taking into consideration the material contained in the layer to be formed and the structure of the layer to be formed.

[0193] When each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region are formed by a spin coating method, the coating conditions may be selected, for example, within a coating speed range of about 2,000 rpm to about 5,000 rpm and a heat treatment temperature range of about 80°C to 200°C, taking into consideration the materials included in the layers to be formed and the structure of the layers to be formed. EXAMPLES

[0194] The compound and the organic light-emitting device according to an embodiment of the present invention will be described in more detail below with reference to synthesis examples and examples. In the synthesis examples below, in the expression "B was used instead of A," the molar equivalents of A and B are the same.

[0195] Synthesis Example 1: Synthesis of Compound 13 [ka]

[0196] (1) Synthesis of intermediate 13-1 1-Bromo-4-fluoro-9H-carbazole (1eq), 1-Bromo-2-fluorobenzene (2eq), K 3 PO 4 (2eq) was added to dimethylformamide and stirred at 160°C for 12 hours. After cooling to room temperature, the mixture was poured into an aqueous NaCl solution to terminate the reaction, and then stirred for 30 minutes. The precipitate was filtered, and the resulting solid was extracted with distilled water and dichloromethane, and the resulting organic layer was extracted with MgSO 4 The crude product was purified by column chromatography (dichloromethane / hexane) to obtain intermediate 13-1 (yield: 75%).

[0197] (2) Synthesis of intermediate 13-2 Intermediate 13-2 was synthesized (yield: 70%) using the same method as for the synthesis of intermediate 13-1, except that intermediate 13-1 (1 eq) and 2,7-diphenyl-9H-carbazole (1 eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1 eq) and 1-bromo-2-fluorobenzene (2 eq).

[0198] (3) Synthesis of compound 13 The intermediate 13-2 (1 eq) and tetrahydrofuran were added to a reaction vessel, which was then cooled to -76°C, and n-BuLi (2.2 eq) was gradually added thereto. After stirring at low temperature for 2 hours, a solution of dichloro(p-tolyl)borane (1.3 eq) diluted in tetrahydrofuran was added to the reaction vessel. After stirring at room temperature for 24 hours, the reaction was terminated by pouring into an aqueous NaCl solution, followed by extraction three times with distilled water and ethyl acetate, and the collected organic layer was dissolved in MgSO 4 The crude product was purified by column chromatography (dichloromethane / hexane) to give compound 13 (yield: 55%).

[0199] Synthesis Example 2: Synthesis of Compound 18 [ka]

[0200] (1) Synthesis of intermediate 18-1 3,3'''-Dibromo-2,2'''-dinitro-1,1':2',1":2",1'''-quaterphenyl (1 eq) and triphenylphosphine (3 eq) were added to 1,2-dichlorobenzene and stirred at 200°C for 36 hours. After cooling, the reaction solution was dried in a rotary evaporator, extracted with distilled water and dichloromethane, and the obtained organic layer was dissolved in MgSO 4 The organic layer was washed with diethyl ether and then with acetone to obtain intermediate 18-1 (yield: 43%).

[0201] (2) Synthesis of intermediate 18-2 Intermediate 18-2 was synthesized using the same method as for the synthesis of intermediate 13-1, except that intermediate 18-1 (1 eq) and 1-bromo-2-fluorobenzene (5 eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1 eq) and 1-bromo-2-fluorobenzene (2 eq) (yield: 55%).

[0202] (3) Synthesis of compound 18 Compound 18 was synthesized (yield: 23%) using the same method as in the synthesis of compound 13, except that intermediate 18-2 (1 eq), n-BuLi (5 eq) and dichloro(mesityl)borane (2.5 eq) were used instead of intermediate 13-2 (1 eq), n-BuLi (2.2 eq) and dichloro(p-tolyl)borane (1.3 eq).

[0203] Synthesis Example 3: Synthesis of Compound 20 [ka]

[0204] (1) Synthesis of intermediate 20-1 Intermediate 20-1 was synthesized (yield: 65%) using the same method as in the synthesis of intermediate 13-1, except that 1-bromo-9H-carbazole (1 eq) and 1-bromo-2-fluorobenzene (2 eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1 eq) and 1-bromo-2-fluorobenzene (2 eq).

[0205] (2) Synthesis of compound 20 Compound 20 was synthesized (yield: 30%) using the same method as in the synthesis of compound 13, except that intermediate 20-1 (1 eq), n-BuLi (2.2 eq) and (2,4,6-trimethyl-1,3-phenylene)bis(dichloroborane) (0.45 eq) were used instead of intermediate 13-2 (1 eq), n-BuLi (2.2 eq) and dichloro(p-tolyl)borane (1.3 eq).

[0206] Synthesis Example 4: Synthesis of Compound 43 [ka]

[0207] (1) Synthesis of intermediate 43-1 Intermediate 43-1 was synthesized (yield 70%) using the same method as in the synthesis of intermediate 13-1, except that 1-bromo-3,6-di-tert-butyl-9H-carbazole (1eq) and 9-(2-bromo-3-fluorophenyl)-3,6-di-tert-butyl-9H-carbazole (1eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1eq) and 1-bromo-2-fluorobenzene (2eq).

[0208] (2) Synthesis of compound 43 Compound 43 was synthesized (yield: 60%) using the same method as in the synthesis of compound 13, except that intermediate 43-1 (1 eq) and dichloro(phenyl)borane (1.3 eq) were used instead of intermediate 13-2 (1 eq) and dichloro(p-tolyl)borane (1.3 eq).

[0209] Synthesis Example 5: Synthesis of Compound 67 [ka]

[0210] (1) Synthesis of intermediate 67-1 Intermediate 67-1 was synthesized using the same method as in the synthesis of intermediate 13-1, except that 9-(2-bromo-3-fluorophenyl)-9H-carbazole (1eq) and 3-(9H-carbazol-9-yl)phenol (1eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1eq) and 1-bromo-2-fluorobenzene (2eq) (yield: 64%).

[0211] (2) Synthesis of compound 67 Intermediate 67-1 was dissolved in o-xylene, cooled to -20°C and stirred. After adding n-BuLi (1.2eq), the temperature was raised to 70°C and stirred for 2 hours. The reaction vessel was cooled again to -30°C, and BBr 3 (1.3eq) was gradually added and stirred at room temperature for 1 hour. The reaction vessel was cooled to 0°C, triethylamine (1.5eq) was added, and the temperature was raised to 120°C and stirred for 5 hours. After cooling, the reaction was terminated by pouring into an aqueous sodium acetate solution, and the reaction solution was removed by drying under reduced pressure using a rotary evaporator. The mixture was washed with diethyl ether, then with acetone, and filtered to obtain compound 67 (yield: 24%).

[0212] Synthesis Example 6: Synthesis of Compound 69 [ka]

[0213] (1) Synthesis of intermediate 69-1 Intermediate 69-1 was synthesized using the same method as in the synthesis of intermediate 13-1, except that 9-(2-bromo-3-fluorophenyl)-9H-carbazole (1eq) and 3-(dibenzo[b,d]furan-4-yl)phenol (1eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1eq) and 1-bromo-2-fluorobenzene (2eq) (yield: 50%).

[0214] (2) Synthesis of Compound 69 Compound 69 was synthesized (yield: 18%) using the same method as in the synthesis of compound 67, except that intermediate 69-1 was used instead of intermediate 67-1.

[0215] Synthesis Example 7: Synthesis of Compound 81 [ka]

[0216] (1) Synthesis of intermediate 81-1 Intermediate 81-1 was synthesized using the same method as in the synthesis of intermediate 13-1, except that 9-(2-bromo-3-fluorophenyl)-9H-carbazole (1eq) and 3-(9,9'-spirobi[fluoren]-4-yl) (1eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1eq) and 1-bromo-2-fluorobenzene (2eq) (yield: 68%).

[0217] (2) Synthesis of Compound 81 Compound 81 was synthesized (yield: 14%) using the same method as in the synthesis of compound 67, except that intermediate 81-1 was used instead of intermediate 67-1.

[0218] Synthesis Example 8: Synthesis of Compound 85 [ka]

[0219] (1) Synthesis of intermediate 85-1 Intermediate 85-1 was synthesized using the same method as in the synthesis of intermediate 13-1, except that 2-bromo-3-(9H-carbazol-9-yl)-5-iodophenol (1eq) and fluorobenzene (2eq) were used instead of 1-bromo-4-fluoro-9H-carbazole (1eq) and 1-bromo-2-fluorobenzene (2eq) (yield: 40%).

[0220] (2) Synthesis of intermediate 85-2 Intermediate 85-1 (1eq), carbazole (1eq), CuI (0.05eq), 1,10-phenanthroline (0.05eq), K 2 CO 3 (3 eq) was added to dimethylformamide and stirred at 170°C for 24 hours. After cooling, the reaction solvent was dried using a rotary evaporator, and then extracted with dichloromethane and distilled water. The combined organic layer was diluted with MgSO 4 The mixture was dried at 40° C., washed with diethyl ether, and then washed with acetone and filtered to synthesize intermediate 85-2 (yield: 55%).

[0221] (3) Synthesis of Compound 85 Compound 85 was synthesized (yield: 31%) using the same method as in the synthesis of compound 67, except that intermediate 85-2 was used instead of intermediate 67-1.

[0222] Synthesis Example 9: Synthesis of Compound 86 [ka]

[0223] (1) Synthesis of intermediate 86-1 Aniline (1eq), Intermediate 85-1 (2eq), Pd 2 (dba) 3 (0.05eq), tert-butylphosphine (0.1eq) and sodium tert-butoxide (3eq) were added to toluene and stirred at 100°C for 6 hours. After cooling, the reaction solvent was dried using a rotary evaporator and then extracted with dichloromethane and distilled water. The resulting organic layer was diluted with MgSO 4 After drying at 40° C., the mixture was washed with acetone and filtered to synthesize intermediate 86-1 (yield: 40%).

[0224] (2) Synthesis of Compound 86 Compound 86 was synthesized (yield: 20%) using the same method as in the synthesis of compound 67, except that intermediate 86-1 was used instead of intermediate 67-1.

[0225] Compounds synthesized in Synthesis Examples 1 to 9 1 H NMR(nuclear magnetic The results of the NMR spectroscopy (MS) / FAB (fast atom bombardment) and MS (mass spectrometry) are shown in Table 1 below.

[0226] For compounds other than those shown in Table 1, those skilled in the art will be able to easily recognize the synthesis methods thereof by referring to the above-mentioned synthesis routes and raw materials. [Table 1]

[0227] Example 1 The positive electrode is Corning 15 Ω / cm 2 A (120 nm) ITO glass substrate was cut to a size of 50 mm × 50 mm × 0.7 mm, and ultrasonically cleaned for 5 minutes using isopropyl alcohol and pure water, respectively, and then cleaned by exposure to ultraviolet light and ozone for 30 minutes, and the glass substrate was placed in a vacuum deposition apparatus.

[0228] NPD was vacuum-deposited on the top of the glass substrate to a thickness of 30 nm to form a hole injection layer, and then TCTA was vacuum-deposited on the top of the glass substrate to a thickness of 20 nm to form a first hole transport layer. CzSi was vacuum-deposited on the top of the first hole transport layer to a thickness of 10 nm to form a second hole transport layer.

[0229] On the second hole transport layer, DPEPO (host) and Compound 4 (dopant) were simultaneously deposited in a weight ratio of 90:10 to form a 20 nm-thick light-emitting layer.

[0230] Next, DPEPO was vacuum-deposited on the top of the light-emitting layer to a thickness of 20 nm to form a first electron transport layer, and then TPBI was vacuum-deposited on the top of the first electron transport layer to a thickness of 30 nm to form a second electron transport layer. LiF was vacuum-deposited on the top of the second electron transport layer to a thickness of 1 nm to form an electron injection layer, and Al was vacuum-deposited on the top of the second electron transport layer to a thickness of 3.00 nm (negative electrode), to produce an organic electroluminescent device.

[0231] Examples 2 to 9 and Comparative Examples 1 to 3 An organic light emitting device was fabricated in the same manner as in Example 1, except that the compound shown in Table 2 below was used instead of Compound 4 as a dopant.

[0232] Evaluation example 1 The driving voltage, current density, external quantum efficiency and maximum emission wavelength of the organic light-emitting devices prepared in Examples 1 to 9 and Comparative Examples 1 to 4 were measured using a Keithley SMU 236 and a luminance meter PR650. The results are shown in Table 2. [Table 2] [ka] JPEG2025032142000126.jpg3722 JPEG2025032142000127.jpg87165

[0233] From Table 2, it can be seen that the organic light-emitting devices of Examples 1 to 9 emit blue light having a maximum emission wavelength of, for example, 440 nm to 480 nm, while having a lower driving voltage, higher current efficiency, and higher external quantum luminescence efficiency than the organic light-emitting devices of Comparative Examples 1 to 4. [Industrial Applicability]

[0234] The fused ring compound and the organic light emitting device including the same according to the present invention can be effectively applied to, for example, technical fields related to light emission. [Explanation of symbols]

[0235] 10,20,30,40 Organic light-emitting devices 110 1st electrode 150 Organic layer 190 2nd electrode 210 First capping layer 220 Second Capping Layer

Claims

1. A fused ring compound represented by the following chemical formula 1: 【Chemistry 1】 ．．． （１） 【Chemistry 2】 ．．． （２） In the above Chemical Formulas 1 and 2, A １１ ~A １４ , and A ２１ ~A ２４ are, independently of each other, C ５ -C ６０ Carbocyclic groups and C １ -C ６０ heterocyclic groups, A １１ ~A １４ are linked to each other via a first linking group or are not linked to each other; A ２１ ~A ２４ are linked to each other via a second linking group or are not linked to each other; n11 and n21 are each independently selected from the group consisting of 0 and 1; L １１ ~L １４ , and L ２１ ~L ２４ are each independently a single bond, *-N(R ａ )-*', substituted or unsubstituted C ５ -C ６０ Carbocyclic groups and substituted or unsubstituted C １ -C ６０ heterocyclic groups, a11 to a14, and a21 to a24 are each independently selected from the group consisting of 0, 1, 2, and 3; R １１ ~R １４ are each independently a group represented by Chemical Formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a 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 Cycloalkyl groups, 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 C １ -C ６０ Heteroaryloxy group, substituted or unsubstituted C １ -C ６０ a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q １ ) (Q ２ ) (Q ３ ), -B(Q １ ) (Q ２ ), -N(Q １ ) (Q ２ ), -P(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ), and -P(=S)(Q １ ) (Q ２ ) is selected from R ａ , and R ２１ ~R ２４ are each independently a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a 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 Cycloalkyl groups, 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 C １ -C ６０ Heteroaryloxy group, substituted or unsubstituted C １ -C ６０ a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q １ ) (Q ２ ) (Q ３ ), -B(Q １ ) (Q ２ ), -N(Q １ ) (Q ２ ), -P(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ), and -P(=S)(Q １ ) (Q ２ ), where R ２１ ~R ２４ one of which is a binding site, b11 to b14, and b21 to b24 are each independently selected from 1, 2, 3, 4, 5, and 6; c11 to c14, and c21 to c24 are independently selected from 1, 2, 3, 4, 5 and 6; * and *' are bonding sites with adjacent atoms, Q １ ~Q ３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C ６０ Heteroaryloxy group, C １ -C ６０ C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group. １ -C ６０ C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group ６ -C ６０ It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

2. A １１ ~A １４ , and A ２１ ~A ２４ are each independently a ring structure selected from benzene, naphthalene, fluorene, spiro-bifluorene, benzofluorene, dibenzofluorene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene, chrysene, perylene, thiophene, furan, silole, carbazole, indole, isoindole, benzofuran, benzothiophene, benzosilole, dibenzofuran, dibenzothiophene, benzocarbazole, dibenzocarbazole and dibenzosilole.

3. A １１ ~A １４ , and A ２１ ~A ２４ are each independently a ring structure selected from benzene, naphthalene, fluorene, phenanthrene, anthracene, triphenylene, pyrene, chrysene, perylene, carbazole, dibenzofuran, and dibenzothiophene.

4. A １３ and A １４ , and / or A １１ and A １４ are bonded to each other via a first linking group or are not bonded to each other, A ２３ and A ２４ , and / or A ２１ and A ２４ are bonded to each other via a second linking group or are not bonded to each other.

5. A １１ ~A １４ two of which are bonded to each other via a first linking group; A ２１ ~A ２４ two of which are linked to each other via a second linking group; The fused ring compound according to claim 1, wherein the first linking group and the second linking group are each independently selected from the group consisting of a single bond, *-O-*', and *-S-*'.

6. L １１ ~L １４ , and L ２１ ~L ２４ are each independently a single bond, *-N(R ａ )-*', 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 triphenylenylene group, a pyrenylene group, a chrysenylene group, a perylenylene group, a thiophenylene group, a furanylene group, a silolylene group, a carbazolylene group, an indolylene group, an isoindolylene group, a benzofuranylene group, a benzothiophenylene group, a benzosilolylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, a dibenzocarbazolylene group and a dibenzosilolylene 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, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q ３１ ) (Q ３２ ) (Q ３３ ), -N(Q ３１ ) (Q ３２ ) and -B(Q ３１ ) (Q ３２ 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 triphenylenylene group, a pyrenylene group, a chrysenylene group, a perylenylene group, a thiophenylene group, a furanylene group, a silolylene group, a carbazolylene group, an indolylene group, an isoindolylene group, a benzofuranylene group, a benzothiophenylene group, a benzosilolylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a benzocarbazolylene group, a dibenzocarbazolylene group, and a dibenzosilolylene group; Q ３１ ~Q ３３ are, independently of each other, C １ -C ６０ 2. The fused ring compound according to claim 1, wherein the fused ring is selected from the group consisting of an alkyl group, a phenyl group, a biphenylyl group and a terphenylyl group.

7. 2. The fused ring compound according to claim 1, wherein a11 to a14 and a21 to a24 are each independently selected from the group consisting of 0 and 1.

8. R １１ ~R １４ are each independently a group represented by Chemical Formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C １ -C ２０ Alkyl group and C １ -C ２０ Alkoxy group; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, a cyano group, a phenyl group, and a biphenylyl group; １ -C ２０ Alkyl group and C １ -C ２０ Alkoxy group; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenylyl, terphenylyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentacenyl, pyrroly a phenyl group, a thiophenyl group, a furanyl group, a silolyl group, 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 indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, an isoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanyl group, acridinyl group, aphenanthrolinyl group, aphenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group nyl group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group and indolocarbazolyl group; Deuterium, -F, -Cl, -Br, -I, cyano 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, biphenylyl group, terphenylyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl 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, perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cinnolinyl group, phenanyl group, anthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group a naphthobenzosilolyl group, a dibenzocarbazolyl group, a dinaphthofuranyl group, a dinaphthothiophenyl group, a dinaphthosilolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an oxazolopyridinyl group, a thiazolopyridinyl group, a benzonaphthyridinyl group, an azafluorenyl group, an azaspiro-bifluorenyl group, an azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, an azadibenzosilolyl group, an indenopyrrolyl group, an indolopyrrolyl group, an indenocarbazolyl group, an indolocarbazolyl group, -Si(Q ３１ ) (Q ３２ ) (Q ３３ ), -N(Q ３１ )(Q ３２ ), -B(Q ３１ )(Q ３２ ), -C(=O)(Q ３１ ), -S(=O)(Q ３１ ), -S(=O) ２ (Q ３１ ), -P(=O)(Q ３１ )(Q ３２ ), and -P(=S)(Q ３１ )(Q ３２ a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenylyl group, a terphenylyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, or a chrysenyl group, each of which is substituted with at least one selected from the group consisting of Perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cyano group, acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzo thiophenyl, naphthobenzosilolyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilolyl, imidazopyridinyl, imidazopyrimidinyl, oxazolopyridinyl, thiazolopyridinyl, benzonaphthyridinyl, azafluorenyl, azaspiro-bifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilolyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl groups; and -Si(Q １ ) (Q ２ ) (Q ３ ), -N(Q １ ) (Q ２ ), -B(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ) and -P(=S)(Q １ ) (Q ２ ) is selected from Q １ ~Q ３ , and Q ３１ ~Q ３３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 2. The fused ring compound according to claim 1, wherein the fused ring compound is selected from the group consisting of a heteroaryl group, a monovalent non-aromatic fused polycyclic group, a monovalent non-aromatic hetero-fused polycyclic group, a biphenylyl group, and a terphenylyl group.

9. R １１ ~R １４ are each independently a group represented by Formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, or C １ -C ２０ Alkyl groups; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, and a cyano group １ -C ２０ Alkyl groups; Groups represented by the following chemical formulas 5-1 to 5-142; and -Si(Q １ ) (Q ２ ) (Q ３ ), -N(Q １ ) (Q ２ ), -B(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ) and -P(=S)(Q １ ) (Q ２ 2. The fused ring compound according to claim 1, wherein the fused ring compound is selected from the group consisting of: 【Chemistry 3】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 In the chemical formulas 5-1 to 5-142, X ５１ is O, S, N (R ５１ ) and C(R ５１ ) (R ６０ ) is selected from X ５２ is N or C(R ５２ ) and X ５３ is N or C(R ５３ ) and X ５４ is N or C(R ５４ ) and X ５５ is N or C(R ５５ ) and X ５６ is N or C(R ５６ ) and X ５７ is N or C(R ５７ ) and X ５８ teeth, N or C(R ５８ ) and X ５９ is N or C(R ５９ ) and R ５１ ~R ６０ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C １ -C ２０ Alkyl group, C １ -C ２０ Alkoxy group, phenyl group, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q ３１ ) (Q ３２ ) (Q ３３ ), -N(Q ３１ ) (Q ３２ ), -B(Q ３１ ) (Q ３２ ), -C(=O)(Q ３１ ), -S(=O)(Q ３１ ), -S(=O) ２ (Q ３１ ), -P(=O)(Q ３１ ) (Q ３２ ) and -P(=S)(Q ３１ ) (Q ３２ ) is selected from Q １ ~Q ３ , and Q ３１ ~Q ３３ are, independently of each other, C １ -C ６０ selected from the group consisting of alkyl, phenyl, biphenylyl and terphenylyl groups; b51 is selected from 1, 2, 3, 4 and 5; b52 is selected from 1, 2, 3, 4, 5, 6 and 7; b53 is selected from 1, 2, 3, 4, 5, 6, 7, 8, and 9; b54 is selected from 1, 2, 3 and 4; b55 is selected from 1, 2 and 3; b56 is selected from 1 and 2; b57 is selected from 1, 2, 3, 4, 5, and 6; * indicates a bonding site with an adjacent atom.

10. R ａ , and R ２１ ~R ２４ are each independently a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C １ -C ２０ Alkyl group and C １ -C ２０ Alkoxy group; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, a cyano group, a phenyl group, and a biphenylyl group; １ -C ２０ Alkyl group and C １ -C ２０ Alkoxy group; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenylyl, terphenylyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, perylenyl, pentacenyl, pyrroly a phenyl group, a thiophenyl group, a furanyl group, a silolyl group, 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 indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, an isoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanyl group, acridinyl group, aphenanthrolinyl group, aphenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group nyl group, naphthobenzosilolyl group, dibenzocarbazolyl group, dinaphthofuranyl group, dinaphthothiophenyl group, dinaphthosilolyl group, imidazopyridinyl group, imidazopyrimidinyl group, oxazolopyridinyl group, thiazolopyridinyl group, benzonaphthyridinyl group, azafluorenyl group, azaspiro-bifluorenyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azadibenzosilolyl group, indenopyrrolyl group, indolopyrrolyl group, indenocarbazolyl group and indolocarbazolyl group; Deuterium, -F, -Cl, -Br, -I, cyano 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, biphenylyl group, terphenylyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl 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, perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cinnolinyl group, phenanyl group, anthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, benzothiazolyl group, benzisothiazolyl group, benzoxazolyl group, benzisoxazolyl group, triazolyl group, tetrazolyl group, thiadiazolyl group, oxadiazolyl group, triazinyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, naphthobenzofuranyl group, naphthobenzothiophenyl group a naphthobenzosilolyl group, a dibenzocarbazolyl group, a dinaphthofuranyl group, a dinaphthothiophenyl group, a dinaphthosilolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an oxazolopyridinyl group, a thiazolopyridinyl group, a benzonaphthyridinyl group, an azafluorenyl group, an azaspiro-bifluorenyl group, an azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, an azadibenzosilolyl group, an indenopyrrolyl group, an indolopyrrolyl group, an indenocarbazolyl group, an indolocarbazolyl group, -Si(Q ３１ ) (Q ３２ ) (Q ３３ ), -N(Q ３１ )(Q ３２ ), -B(Q ３１ )(Q ３２ ), -C(=O)(Q ３１ ), -S(=O)(Q ３１ ), -S(=O) ２ (Q ３１ ), -P(=O)(Q ３１ )(Q ３２ ), and -P(=S)(Q ３１ )(Q ３２ a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenylyl group, a terphenylyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, or a chrysenyl group, each of which is substituted with at least one selected from the group consisting of Perylenyl group, pentacenyl group, pyrrolyl group, thiophenyl group, furanyl group, silolyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, indolyl group, isoindolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, isoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cyano group, acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzo thiophenyl, naphthobenzosilolyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilolyl, imidazopyridinyl, imidazopyrimidinyl, oxazolopyridinyl, thiazolopyridinyl, benzonaphthyridinyl, azafluorenyl, azaspiro-bifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilolyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl groups; and -Si(Q １ ) (Q ２ ) (Q ３ ), -N(Q １ ) (Q ２ ), -B(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ) and -P(=S)(Q １ ) (Q ２ ) is selected from Q １ ~Q ３ , and Q ３１ ~Q ３３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 2. The fused ring compound according to claim 1, wherein the fused ring compound is selected from the group consisting of a heteroaryl group, a monovalent non-aromatic fused polycyclic group, a monovalent non-aromatic hetero-fused polycyclic group, a biphenylyl group, and a terphenylyl group.

11. R ａ , and R ２１ ~R ２４ are each independently a bonding site, hydrogen, deuterium, -F, -Cl, -Br, -I, a cyano group, C １ -C ２０ Alkyl groups; C substituted with at least one selected from the group consisting of deuterium, -F, -Cl, -Br, -I, and a cyano group １ -C ２０ Alkyl groups; Groups represented by the following chemical formulas 5-1 to 5-142; and -Si(Q １ ) (Q ２ ) (Q ３ ), -N(Q １ ) (Q ２ ), -B(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ) and -P(=S)(Q １ ) (Q ２ 2. The fused ring compound according to claim 1, wherein the fused ring compound is selected from the group consisting of: 【Chemistry 4】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 In the chemical formulas 5-1 to 5-142, X ５１ is O, S, N (R ５１ ) and C(R ５１ ) (R ６０ ) is selected from X ５２ is N or C(R ５２ ) and X ５３ is N or C(R ５３ ) and X ５４ is N or C(R ５４ ) and X ５５ is N or C(R ５５ ) and X ５６ is N or C(R ５６ ) and X ５７ is N or C(R ５７ ) and X ５８ teeth, N or C(R ５８ ) and X ５９ is N or C(R ５９ ) and R ５１ ~R ６０ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C １ -C ２０ Alkyl group, C １ -C ２０ Alkoxy group, phenyl group, biphenylyl group, terphenylyl 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, thiophenyl group, furanyl group, silolyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, benzosilolyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, -Si(Q ３１ ) (Q ３２ ) (Q ３３ ), -N(Q ３１ ) (Q ３２ ), -B(Q ３１ ) (Q ３２ ), -C(=O)(Q ３１ ), -S(=O)(Q ３１ ), -S(=O) ２ (Q ３１ ), -P(=O)(Q ３１ ) (Q ３２ ) and -P(=S)(Q ３１ ) (Q ３２ ) is selected from Q １ ~Q ３ , and Q ３１ ~Q ３３ are, independently of each other, C １ -C ６０ selected from the group consisting of alkyl, phenyl, biphenylyl and terphenylyl groups; b51 is selected from 1, 2, 3, 4 and 5; b52 is selected from 1, 2, 3, 4, 5, 6 and 7; b53 is selected from 1, 2, 3, 4, 5, 6, 7, 8, and 9; b54 is selected from 1, 2, 3 and 4; b55 is selected from 1, 2 and 3; b56 is selected from 1 and 2; b57 is selected from 1, 2, 3, 4, 5, and 6; * indicates a bonding site with an adjacent atom.

12. The fused ring compound of claim 1, wherein the fused ring compound represented by Formula 1 is represented by any one of the following Formulas 1-1 to 1-3: 【Chemistry 5】 In the above chemical formulas 1-1 to 1-3, X １１ is selected from a single bond, *-O-*' and *-S-*', R １１ ~R １４ are each independently a group represented by Chemical Formula 2, hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a 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 Cycloalkyl groups, 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 C １ -C ６０ Heteroaryloxy group, substituted or unsubstituted C １ -C ６０ a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q １ ) (Q ２ ) (Q ３ ), -B(Q １ ) (Q ２ ), -N(Q １ ) (Q ２ ), -P(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ), and -P(=S)(Q １ ) (Q ２ ) is selected from Q １ ~Q ３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C ６０ Heteroaryloxy group, C １ -C ６０ C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group. １ -C ６０ C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group ６ -C ６０ It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

13. R １１ ~R １４ one of which is a group represented by chemical formula 2, The fused ring compound according to claim 1, wherein the group represented by the formula 2 is represented by any one of the following formulas 2-1 to 2-4: 【Chemistry 6】 In the above chemical formulas 2-1 to 2-4, * denotes a binding site, R ２１ ~R ２４ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a 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 Cycloalkyl groups, 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 C １ -C ６０ Heteroaryloxy group, substituted or unsubstituted C １ -C ６０ a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q １ ) (Q ２ ) (Q ３ ), -B(Q １ ) (Q ２ ), -N(Q １ ) (Q ２ ), -P(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ), and -P(=S)(Q １ ) (Q ２ ) is selected from Q １ ~Q ３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C ６０ Heteroaryloxy group, C １ -C ６０ C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group. １ -C ６０ C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group ６ -C ６０ It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

14. R １１ ~R １４ one of which is a group represented by chemical formula 2, The fused ring compound according to claim 1, wherein the group represented by Formula 2 is represented by any one of Formulas 2-11 to 2-22 below: 【Chemistry 7】 【change】 【change】 In the chemical formulas 2-11 to 2-22, * denotes a binding site, X ２１ is selected from a single bond, *-O-*' and *-S-*', R ２１ ~R ２４ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a 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 Cycloalkyl groups, 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 C １ -C ６０ Heteroaryloxy group, substituted or unsubstituted C １ -C ６０ a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q １ ) (Q ２ ) (Q ３ ), -B(Q １ ) (Q ２ ), -N(Q １ ) (Q ２ ), -P(Q １ ) (Q ２ ), -C(=O)(Q １ ), -S(=O)(Q １ ), -S(=O) ２ (Q １ ), -P(=O)(Q １ ) (Q ２ ), and -P(=S)(Q １ ) (Q ２ ) is selected from Q １ ~Q ３ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a 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 -C ６０ Heteroaryloxy group, C １ -C ６０ C substituted with at least one selected from the group consisting of a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic hetero-condensed polycyclic group, deuterium, -F, and a cyano group. １ -C ６０ C substituted with at least one selected from an alkyl group, a deuterium, -F, and a cyano group ６ -C ６０ It is selected from the group consisting of aryl, biphenylyl, and terphenylyl groups.

15. The fused ring compound according to claim 1, wherein the fused ring compound represented by the formula 1 is selected from the following compounds 1 to 86: 【Chemistry 8】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】 【change】

16. 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 comprises the fused ring compound according to any one of claims 1 to 15.

17. the first electrode is an anode; the second electrode is a cathode; the organic layer further includes a hole transport region disposed between the first electrode and the light emitting layer, and an electron transport region disposed between the light emitting layer and the second electrode; the hole transport region includes a hole injection layer, a hole transport layer, a light-emitting auxiliary layer, an electron blocking layer, or any combination thereof; 17. The organic light emitting device of claim 16, wherein the electron transport region comprises a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

18. The organic light-emitting device according to claim 16 , wherein the light-emitting layer contains the fused ring compound.

19. the light-emitting layer comprises the fused ring compound and a host, The organic light-emitting device according to claim 16, wherein the fused ring compound is a thermally activated delayed fluorescence emitter.

20. The organic light emitting device according to claim 19, wherein the content of the fused ring compound is in the range of 0.01 to 30 parts by weight per 100 parts by weight of the host.

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