Amine compound, light-emitting element including amine compound, and display device including light-emitting element

Abstract

The invention relates to a light-emitting element, a light-emitting element including an amine compound, and a display device including the light-emitting element. There is provided a light emitting element including a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode. The hole transport region is disposed between the first electrode and the light emitting layer, and includes an amine compound represented by Formula 1. The light-emitting element may exhibit high efficiency and long lifetime properties. Formula 1 # imgabs0 #

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0112580 filed in the Korean Intellectual Property Office on August 28, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure herein relates to an amine compound, a light-emitting element including the amine compound, and a display device including the light-emitting element. Background Art

[0003] Recently, as image display devices, organic electroluminescent display devices and the like have been actively developed. The organic electroluminescent display device and the like are display devices including a so-called "self-luminescent" light-emitting element that realizes display when holes and electrons injected from a first electrode and a second electrode, respectively, are recombined in a light-emitting layer of the display device. Subsequently, the light-emitting material of the light-emitting layer emits light to realize display (e.g., an image).

[0004] Application of light-emitting elements to display devices requires or expects improved luminous efficiency and / or improved life (element life), etc. Therefore, there is a need or expectation for research and development of materials for light-emitting elements that can stably obtain such characteristics or expectations, and such development is ongoing.

[0005] In one or more embodiments, in order to realize a light-emitting element having relatively high luminous efficiency and relatively long lifetime, a material for a hole transport region that improves charge transport and material stability has been developed. Summary of the invention

[0006] One or more aspects of embodiments of the present disclosure are directed to a light emitting element having improved luminous efficiency and lifetime.

[0007] One or more aspects of embodiments of the present disclosure are directed to an amine compound, which is a material for a light-emitting element having high luminous efficiency and long life properties.

[0008] One or more aspects of embodiments of the present disclosure are directed to a display device having excellent or appropriate display quality by including a light emitting element having improved light emitting efficiency and lifespan.

[0009] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the embodiments presented herein.

[0010] One or more embodiments of the present disclosure provide an amine compound represented by Formula 1. Formula 1

[0011] In formula 1, R 1 To R 7 Each of them may be independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. n may be an integer selected from 1 to 3, and R a It may be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and / or may form a ring by bonding with an adjacent group. 1 and L 2 Ar may be each independently a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. 1 may be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and when L 1 For direct connection, Ar 1 is an unsubstituted or unsubstituted fluorenyl group. 2 and Ar 3 may be each independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group or a substituted or unsubstituted phenanthryl group, wherein Ar 2 and Ar 3 Each of does not include a substituted or unsubstituted carbazolyl group as a substituent. 1 ,Ar 2 and Ar 3 Each does not include substituted or unsubstituted triphenylene.

[0012] In one or more embodiments, Formula 1 may be represented by Formula 1A. Formula 1A

[0013] In Formula 1A, m and p may each independently be an integer selected from 1 to 5, R b and R cmay each independently be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and / or may form a ring by bonding with an adjacent group, and Ar 1 , L 1 , L 2 , R 1 To R 7 , R a and n may each independently be as defined in Formula 1.

[0014] In one or more embodiments, Formula 1 may be represented by Formula 1-1 or Formula 1-2. Formula 1-1 Formula 1-2

[0015] In formula 1-2, L 2a may be a substituted or unsubstituted phenylene group or a substituted or unsubstituted divalent biphenyl group, and in Formula 1-1 and Formula 1-2, Ar 1 ,Ar 2 ,Ar 3 , L 1 , R 1 To R 7 , R a and n may each independently be as defined in Formula 1.

[0016] In one or more embodiments, Ar 1 It may be a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted dibenzoheterocyclopentadienyl group including O, S, N or Si as a ring-forming heteroatom, or a substituted or unsubstituted benzonaphthocyclopentadienyl group including O or S as a ring-forming heteroatom.

[0017] In one or more embodiments, in Formula 1, at least one hydrogen atom may be substituted with a deuterium atom.

[0018] In one or more embodiments, in Formula 1, R 1 To R 7 , R a ,Ar 1 ,Ar 2 ,Ar 3 , L 1 and L 2Substituted or unsubstituted amine groups may not be included (eg, may be excluded).

[0019] In one or more embodiments of the present disclosure, the light-emitting element includes a first electrode, a second electrode arranged on the first electrode, a light-emitting layer arranged between the first electrode and the second electrode, and a hole transport region arranged between the first electrode and the light-emitting layer and including an amine compound according to one or more embodiments described herein.

[0020] In one or more embodiments, the hole transport region may include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, and a light-emitting auxiliary layer, wherein at least one of the hole injection layer, the hole transport layer, the electron blocking layer, and the light-emitting auxiliary layer may include an amine compound of one or more embodiments.

[0021] In one or more embodiments, the hole transport region may include a hole injection layer disposed on the first electrode and a hole transport layer disposed on the hole injection layer, wherein the hole transport layer may include the amine compound of one or more embodiments.

[0022] In one or more embodiments, the light emitting layer may include a compound represented by Formula E-1. Formula E-1

[0023] In Formula E-1, c and d may each independently be an integer selected from 0 to 5, and R 31 To R 40 Each of the groups may independently be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and / or may form a ring by bonding with an adjacent group.

[0024] In one or more embodiments, the light emitting layer may emit blue light.

[0025] In one or more embodiments of the present disclosure, a display device includes a substrate layer, a circuit layer arranged on the substrate layer, and a display element layer arranged on the circuit layer and including a light-emitting element, wherein the light-emitting element includes a first electrode, a second electrode arranged on the first electrode, a light-emitting layer arranged between the first electrode and the second electrode, and a hole transport region arranged between the first electrode and the light-emitting layer and including an amine compound according to one or more embodiments described herein.

[0026] In one or more embodiments, the light emitting element may emit blue light.

[0027] In one or more embodiments, the display device may further include a light control layer including quantum dots. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated into and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and together with the description are used to explain the principles of the present disclosure. In the drawings:

[0029] Figure 1 A plan view showing a display device according to one or more embodiments of the present disclosure;

[0030] Figure 2 To show along Figure 1 A cross-sectional view of a portion taken along line II';

[0031] Figure 3 A cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0032] Figure 4 A cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0033] Figure 5 A cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0034] Figure 6 A cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0035] Figure 7 A cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0036] Figure 8 A cross-sectional view showing a display device according to one or more embodiments of the present disclosure;

[0037] Fig. 9 A cross-sectional view showing a display device according to one or more embodiments of the present disclosure;

[0038] Fig.10 A cross-sectional view showing a display device according to one or more embodiments of the present disclosure;

[0039] Fig.11 is a cross-sectional view showing a display device according to one or more embodiments of the present disclosure; and

[0040] Fig.12It is a view showing the interior of a vehicle in which the display device according to one or more embodiments of the present disclosure is arranged. DETAILED DESCRIPTION

[0041] The present disclosure may be modified in one or more suitable ways and have a variety of forms, and therefore specific embodiments will be illustrated in the accompanying drawings and described in more detail in the detailed description of the present disclosure. However, it should be understood that it is not intended to limit the present disclosure to the particular form disclosed, but is intended to cover all modifications, equivalents and alternatives that fall within the spirit and scope of the present disclosure.

[0042] When explaining each of the drawings, the same reference numerals are used to refer to the same elements, and repeated descriptions thereof may not be provided. In the accompanying drawings, the size of each structure is exaggeratedly illustrated for clarity of the present disclosure.

[0043] It will be understood that although the terms "first" and / or "second" and the like may be used herein to describe one or more appropriate components, these components should not be limited by these terms. These terms are only used to distinguish one component from another component. For example, without departing from the scope of the example embodiments of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. As used herein, the singular forms "a", "an", and "the" are intended to also include plural forms unless the context clearly indicates otherwise.

[0044] In the present application, it will be understood that the terms “include,” “includes,” “including,” “comprise,” “comprises,” “comprising,” “has,” “having” and / or “have” and the like specify the presence of features, numbers, steps, operations, components, parts, or a combination thereof disclosed in the specification, but do not exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or a combination thereof.

[0045] In the present application, when a layer, film, region or plate is referred to as being "on" or "in the upper part" of another layer, film, region or plate, it may not only be "directly on" the layer, film, region or plate, but also there may be intervening layers, films, regions or plates. In contrast, when a layer, film, region or plate is referred to as being "under" or "in the lower part" of another layer, film, region or plate, it may not only be directly under the layer, film, region or plate, but also there may be intervening layers, films, regions or plates. It will be understood that when a component is referred to as being "on" another component, it may be arranged above the other component, or it may also be arranged below the other component.

[0046] For example, for ease of description, terms such as "below", "above" and / or "on" are used herein to describe the relationship between one element and another element as illustrated in the accompanying drawings. The terms are relative concepts and are described based on the directions indicated in the accompanying drawings. It will be understood that the terms have relative concepts and are described based on the orientations depicted in the accompanying drawings. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation other than the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, the element described as "below" other elements or features will be oriented "above" or "on" other elements or features. Therefore, the term "below" can encompass both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used in this article should be interpreted accordingly.

[0047] As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively.

[0048] As used herein, expressions such as “at least one of,” “one of,” “selected from,” and “selected from” when preceding / following a list of elements modify the entire list of elements and do not modify the individual elements of the list. For example, the expressions “at least one of a through c” and “at least one of a, b, and c” may indicate only a, only b, only c, both a and b (e.g., a and b simultaneously), both a and c (e.g., a and c simultaneously), both b and c (e.g., b and c simultaneously), all of a, b, and c, or variations thereof.

[0049] The term "and / or" includes all combinations of one or more of the associated listed elements.

[0050] As used herein, the term "may" will be understood to refer to "one or more embodiments of the present disclosure," some of which include the described elements, while some of which exclude the elements and / or include alternative elements. Similarly, alternative language such as "or" refers to "one or more embodiments of the present disclosure," each of which includes the corresponding enumerated items.

[0051] Unless otherwise defined, all terms (including chemical, technical and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which the present disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and unless explicitly defined as such in this article, will not be interpreted as an ideal or overly formal meaning.

[0052] As used herein, the phrase "consisting essentially of" means that any additional components will not substantially affect the chemical, physical, optical or electrical properties of the target moiety.

[0053] As used herein, the phrase “on a plane” or “plan view” means observing a target portion from the top, and the phrase “in cross section” means observing a cross section formed by vertically cutting the target portion from the side.

[0054] In the present disclosure, "does not include one or any 'component'", "excludes one or any 'component'" and / or "does not contain a component" etc. means that the "component" is not added, selected or used as a component in the composition, but due to other impurities and / or external factors, less than an appropriate amount of the "component" may still be included. definition

[0055] In the specification, the term "substituted or unsubstituted" may refer to being substituted or unsubstituted by (e.g., selected from) at least one substituent in the group including (e.g., consisting of) deuterium atoms, halogen atoms, cyano groups, nitro groups, amine groups, amino groups, silyl groups, oxy groups, sulfenyl groups, sulfinyl groups, sulfonyl groups, carbonyl groups, boron groups, phosphine oxide groups, phosphine sulfide groups, alkyl groups, alkenyl groups, alkynyl groups, hydrocarbon ring groups, aryl groups, and heterocyclic groups. In one or more embodiments, each of the substituents illustrated herein may be substituted or unsubstituted. For example, biphenyl groups may be interpreted as aryl groups or phenyl groups substituted with phenyl groups.

[0056] In the specification, the phrase "bonded to an adjacent group to form a ring" may refer to a group bonding to an adjacent group to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted heterocycle. Hydrocarbon rings include aliphatic hydrocarbon rings and aromatic hydrocarbon rings. Heterocycles include aliphatic heterocycles and aromatic heterocycles. Hydrocarbon rings and heterocycles may be monocyclic or polycyclic. In one or more embodiments, the ring formed by bonding to each other may be connected to another ring to form a spiro structure.

[0057] In the specification, the term "adjacent group" may refer to a substituent substituted for an atom directly connected to the atom substituted by the corresponding substituent, another substituent substituted for the atom substituted by the corresponding substituent, or a substituent located closest to the corresponding substituent in space. For example, the two methyl groups in 1,2-dimethylbenzene may be interpreted as "adjacent groups" to each other, and the two ethyl groups in 1,1-diethylcyclopentane may be interpreted as "adjacent groups" to each other. In one or more embodiments, the two methyl groups in 4,5-dimethylphenanthrene may be interpreted as "adjacent groups" to each other.

[0058] In the specification, examples of the halogen atom may include a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.

[0059] In the specification, the alkyl group may be linear or branched. The number of carbons in the alkyl group is 1 to 50, 1 to 30, 1 to 20, 1 to 10, or 1 to 6. Examples of the alkyl group may include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl, 3,3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, n-heptyl, 1-methylheptyl, 2,2-dimethylheptyl, 2-ethylheptyl, 2-butylheptyl, n-octyl, tert-octyl, 2-ethyloctyl, 2-butyloctyl, 2-hexyloctyl, 3,7-dimethyloctyl, n-nonyl, n-decyl, adamantyl, 2-ethyldecyl, 2-butyldecyl, 2-hexyldecyl, 2-octyldecyl, n-undecyl, n-Dodecyl, 2-ethyldodecyl, 2-butyldodecyl, 2-hexyldodecyl, 2-octyldodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, 2-ethylhexadecyl, 2-butylhexadecyl, 2-hexylhexadecyl, 2-octylhexadecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, 2-ethyleicosyl, 2-butyleicosyl, 2-hexyleicosyl, 2-octyleicosyl, n-heonicosyl, n-docosyl, n-tricosyl, n-tetracosyl, n-pentacosyl, n-hexacosyl, n-heptacosyl, n-octacosyl, n-nonacosyl and / or n-triacontyl, etc., but embodiments of the present disclosure are not limited thereto.

[0060] In the specification, cycloalkyl may refer to a cyclic alkyl. The number of carbons in the cycloalkyl is 3 to 50, 3 to 30, 3 to 20, or 3 to 10. Examples of cycloalkyl may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, norbornyl, 1-adamantyl, 2-adamantyl, isobornyl and / or bicycloheptyl, but embodiments of the present disclosure are not limited thereto.

[0061] In the specification, alkenyl refers to a hydrocarbon group including at least one carbon-carbon double bond in the middle or at the end of an alkyl group having two or more carbon atoms. The alkenyl group may be linear or branched. The number of carbon atoms in the alkenyl group is not specifically limited, but is 2 to 30, 2 to 20, or 2 to 10. Examples of alkenyl groups include vinyl, 1-butenyl, 1-pentenyl, 1,3-butadienyl, styryl and / or styrylvinyl, etc., but embodiments of the present disclosure are not limited thereto.

[0062] In the specification, alkynyl refers to a hydrocarbon group including at least one carbon-carbon triple bond in the middle or at the end of an alkyl group having two or more carbon atoms. The alkynyl group may be straight chain or branched. Although the number of carbon atoms in the alkynyl group is not specifically limited, it is 2 to 30, 2 to 20 or 2 to 10. Specific examples of the alkynyl group may include ethynyl and / or propynyl, etc., but are not limited thereto.

[0063] In the specification, the hydrocarbon ring group refers to any functional group or substituent derived from an aliphatic hydrocarbon ring. The hydrocarbon ring group may be a saturated hydrocarbon ring group having 5 to 20 ring-forming carbon atoms.

[0064] In the specification, aryl refers to any functional group or substituent derived from an aromatic hydrocarbon ring. The aryl may be a monocyclic aryl or a polycyclic aryl. The number of ring carbon atoms in the aryl may be 6 to 30, 6 to 20, or 6 to 15. Examples of aryl may include phenyl, naphthyl, fluorenyl, anthracenyl, phenanthrenyl, biphenyl, terphenyl, quaterphenyl, pentaphenyl, hexaphenyl, triphenylene, pyrenyl, benzofluoranthenyl and / or 1,2-triphenylenyl, etc., but embodiments of the present disclosure are not limited thereto.

[0065] In the specification, the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure. Examples of the substituted fluorenyl group are as follows. However, embodiments of the present disclosure are not limited thereto.

[0066] The heterocyclic group herein refers to any functional group or substituent derived from a ring containing at least one of B, O, N, P, Si, S and Se as a heteroatom. The heterocyclic group includes an aliphatic heterocyclic group and an aromatic heterocyclic group. The aromatic heterocyclic group may be a heteroaryl group. The aliphatic heterocyclic ring and the aromatic heterocyclic ring may be monocyclic or polycyclic.

[0067] In the specification, the heterocyclic group may contain at least one of B, O, N, P, Si, S and Se as a heteroatom. If the heterocyclic group contains two or more heteroatoms, the two or more heteroatoms may be the same or different from each other. The heterocyclic group may be a monocyclic heterocyclic group or a polycyclic heterocyclic group, and includes a heteroaryl group. The number of ring carbon atoms in the heterocyclic group may be 2 to 30, 2 to 20 or 2 to 10.

[0068] In the specification, the aliphatic heterocyclic group may include at least one of B, O, N, P, Si, S and Se as a heteroatom. The number of ring-forming carbon atoms in the aliphatic heterocyclic group may be 2 to 30, 2 to 20 or 2 to 10. Examples of the aliphatic heterocyclic group may include an oxirane group, an oxirane group, a pyrrolidinyl group, a piperidinyl group, a tetrahydrofuranyl group, a tetrahydrothiophenyl group, a thiol group, a tetrahydropyranyl group and / or a 1,4-dioxanyl group, etc., but embodiments of the present disclosure are not limited thereto.

[0069] In the specification, the heteroaryl group may contain at least one of B, O, N, P, Si, S and Se as a heteroatom. If the heteroaryl group contains two or more heteroatoms, the two or more heteroatoms may be the same or different from each other. The heteroaryl group may be a monocyclic heterocyclic group or a polycyclic heterocyclic group. The number of ring carbon atoms in the heteroaryl group may be 2 to 30, 2 to 20 or 2 to 10. Examples of heteroaryl groups may include thienyl, furyl, pyrrolyl, imidazolyl, pyridyl, bipyridyl, pyrimidyl, triazine, triazolyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, N-arylcarbazolyl, N-heteroarylcarbazolyl, N-alkylcarbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, thienothiphenyl, benzofuranyl, phenanthrolinyl, thiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, thiadiazolyl, phenothiazinyl, dibenzothirolyl and / or dibenzofuranyl, but embodiments of the present disclosure are not limited thereto.

[0070] In the specification, the foregoing description of the aryl group may be applied to the arylene group, except that the arylene group is a divalent group. The foregoing description of the heteroaryl group may be applied to the heteroarylene group, except that the heteroarylene group is a divalent group.

[0071] In the specification, silyl includes alkylsilyl and arylsilyl. The alkyl in the alkylsilyl may be linear, branched or cyclic. The number of carbon atoms in the alkylsilyl is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylsilyl is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of silyl may include trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, vinyldimethylsilyl, propyldimethylsilyl, triphenylsilyl, diphenylsilyl and / or phenylsilyl, etc., but embodiments of the present disclosure are not limited thereto.

[0072] In the specification, the number of carbon atoms in the carbonyl group is not particularly limited, but may be 1 to 40, 1 to 30, or 1 to 20. For example, the carbonyl group may have the following structure, but embodiments of the present disclosure are not limited thereto.

[0073] In the specification, the number of carbon atoms in the sulfinyl group and the sulfonyl group is not particularly limited, but may be 1 to 30. The sulfinyl group may include an alkylsulfinyl group and an arylsulfinyl group. The sulfonyl group may include an alkylsulfonyl group and an arylsulfonyl group.

[0074] In the specification, the thio group may include an alkylthio group and an arylthio group. The thio group may refer to a sulfur atom bonded to an alkyl group or an aryl group as defined herein. The alkyl group in the alkylthio group may be linear, branched or cyclic. The number of carbon atoms in the alkylthio group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylthio group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of thio groups may include methylthio, ethylthio, propylthio, pentylthio, hexylthio, octylthio, dodecylthio, cyclopentylthio, cyclohexylthio, phenylthio and / or naphthylthio, etc., but embodiments of the present disclosure are not limited thereto.

[0075] In the specification, an oxy group may refer to an oxygen atom bonded to an alkyl or aryl group as defined herein. The oxy group may include an alkoxy group and an aryloxy group. The alkoxy group may be linear, branched or cyclic. The number of carbon atoms in the alkoxy group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the aryloxy group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of oxy groups may include methoxy, ethoxy, n-propoxy, isopropoxy, butoxy, pentyloxy, hexyloxy, octyloxy, nonyloxy, decyloxy and / or benzyloxy, etc., but embodiments of the present disclosure are not limited thereto.

[0076] The boryl group herein may refer to a boron atom bonded to an alkyl or aryl group as defined herein. Boryl groups include alkyl boryl groups and aryl boryl groups. The alkyl group in the alkyl boryl group may be linear, branched or cyclic. The number of carbon atoms in the alkyl boryl group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the aryl boryl group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of boryl groups may include dimethyl boryl, tert-butyl methyl boryl, diphenyl boryl and / or phenyl boryl, etc., but embodiments of the present disclosure are not limited thereto.

[0077] In the specification, the amine group may include an alkylamine group and an arylamine group. The alkyl group in the alkylamine group may be linear, branched or cyclic. The number of carbon atoms in the alkylamine group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylamine group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of the amine group may include a methylamine group, a dimethylamine group, a phenylamine group, a diphenylamine group, a naphthylamine group and / or a 9-methyl-anthrylamine group, etc., but the embodiments of the present disclosure are not limited thereto. In the specification, the sulfinyl group may mean an alkyl group or an aryl group defined above combined with -S(=O)-. The number of carbon atoms of the sulfinyl group is not particularly limited, but may be 1 to 30, 1 to 20, or 1 to 10. The sulfinyl group may include an alkylsulfinyl group and an arylsulfinyl group. For example, the sulfinyl group may have the following structure, but is not limited thereto. In the specification, sulfonyl may refer to -S(=O) 2 - combined with the above-defined alkyl or aryl groups. The number of carbon atoms of the sulfonyl group is not particularly limited, but may be 1 to 30, 1 to 20, or 1 to 10. The sulfonyl group may include an alkylsulfonyl group and an arylsulfonyl group. For example, the sulfonyl group may have the following structure, but is not limited thereto. In the specification, the phosphine oxide group may mean an alkyl group or an aryl group defined above combined with -P(=O)-. The number of carbon atoms of the phosphine oxide group is not particularly limited, but may be 1 to 30, 1 to 20, or 1 to 10. The phosphine oxide group may include an alkyl phosphine oxide group and an aryl phosphine oxide group. For example, the phosphine oxide group may have the following structure, but is not limited thereto. In the specification, the phosphinosulfide group may mean an alkyl group or an aryl group defined above combined with -P(=S)-. The number of carbon atoms of the phosphinosulfide group is not particularly limited, but may be 1 to 30, 1 to 20, or 1 to 10. The phosphinosulfide group may include an alkylphosphinosulfide group and an arylphosphinosulfide group. For example, the phosphinosulfide group may have the following structure, but is not limited thereto.

[0078] In the specification, the alkyl group in the alkoxy group, alkylthio group, alkylsulfonyl group, alkylsulfinyl group, alkylaryl group, alkylamino group, alkylboryl group, alkylsilyl group, alkylphosphine oxide group, alkylphosphine sulfide group and alkylamine group is the same as the examples of the alkyl group described herein.

[0079] In the specification, the aryl group in the aryloxy group, arylthio group, arylsulfonyl group, arylsulfinyl group, arylamino group, arylboryl group, arylsilyl group, arylphosphine oxide group, arylphosphine sulfide group and arylamine group is the same as the examples of the aryl group described herein.

[0080] In the specification, a direct connection may refer to a single bond.

[0081] In one or more embodiments, in the specification, and “——*” indicate the location to be connected.

[0082] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Display device

[0083] Figure 1 A plan view of a display device DD for explaining one or more embodiments. Figure 2 is a cross-sectional view of a display device DD according to an embodiment. Figure 2 To explain along Figure 1 A cross-sectional view of a portion taken along line II'.

[0084] The display device DD may include a display panel DP and an optical layer PP arranged on the display panel DP. The display panel DP includes light emitting elements ED-1, ED-2, and ED-3. The display device DD may include a plurality of light emitting elements ED-1, ED-2, and ED-3. The optical layer PP may be arranged on the display panel DP to control light reflected by external light at the display panel DP. The optical layer PP may include, for example, a polarizing layer or a color filter layer. In one or more embodiments, unlike the configuration illustrated in the drawings, the display device DD of one or more embodiments may not provide the optical layer PP.

[0085] The base substrate BL may be disposed on the optical layer PP. The base substrate BL may be a member providing a base surface on which the optical layer PP is disposed. The base substrate BL may be a glass substrate, a metal substrate, and / or a plastic substrate, etc. However, the embodiments of the present disclosure are not limited thereto, and the base substrate BL may be an inorganic layer, an organic layer, or a composite material layer. In one or more embodiments, unlike the configuration illustrated in the drawings, in one or more embodiments, the base substrate BL may not be provided.

[0086] The display device DD according to one or more embodiments may further include a filling layer. The filling layer may be arranged between the display element layer DP-ED and the base substrate BL. The filling layer may be an organic material layer. The filling layer may include at least one of acrylic resin, silicone resin, and epoxy resin.

[0087] The display panel DP may include a base layer BS, a circuit layer DP-CL provided on the base layer BS, and a display element layer DP-ED. The display element layer DP-ED may include a pixel defining layer PDL, light emitting elements ED-1, ED-2, and ED-3 arranged between portions of the pixel defining layer PDL, and an encapsulation layer TFE arranged on the light emitting elements ED-1, ED-2, and ED-3.

[0088] The base layer BS may be a member providing a base surface on which the display element layer DP-ED is arranged. The base layer BS may be a glass substrate, a metal substrate, and / or a plastic substrate, etc. However, the embodiment is not limited thereto, and the base layer BS may be an inorganic layer, an organic layer, or a composite material layer.

[0089] In one or more embodiments, the circuit layer DP-CL is arranged on the base layer BS, and the circuit layer DP-CL may include a plurality of transistors. Each of the transistors may include a control electrode, an input electrode, and an output electrode. For example, the circuit layer DP-CL may include a switching transistor and a driving transistor for driving the light-emitting elements ED-1, ED-2, and ED-3 of the display element layer DP-ED.

[0090] Each of the light emitting elements ED-1, ED-2, and ED-3 may have a light emitting element having a light emitting characteristic as will be described later. Figures 3 to 7 Each of the light emitting elements ED-1, ED-2 and ED-3 may include a first electrode EL1, a hole transport region HTR, light emitting layers EML-R, EML-G and EML-B, an electron transport region ETR, and a second electrode EL2.

[0091] Figure 2 One or more embodiments are explained in which the light-emitting layers EML-R, EML-G, and EML-B of the light-emitting elements ED-1, ED-2, and ED-3 are arranged in the opening OH defined by the pixel defining layer PDL, and the hole transport region HTR, the electron transport region ETR, and the second electrode EL2 are provided as a common layer in the entire light-emitting elements ED-1, ED-2, and ED-3. However, the embodiments of the present disclosure are not limited thereto, and are not limited to the embodiments of the present disclosure. Figure 2Different from the configuration explained in the embodiment, the hole transport region HTR and the electron transport region ETR in one or more embodiments may be provided by patterning in the opening OH defined by the pixel defining layer PDL. For example, the hole transport region HTR, the light emitting layers EML-R, EML-G and EML-B, and the electron transport region ETR of the light emitting elements ED-1, ED-2 and ED-3 in one or more embodiments may be provided by patterning in an inkjet printing method.

[0092] The encapsulation layer TFE may cover the light emitting elements ED-1, ED-2 and ED-3. The encapsulation layer TFE may seal the light emitting elements ED-1, ED-2 and ED-3 in the display element layer DP-ED. The encapsulation layer TFE may be a thin film encapsulation layer. The encapsulation layer TFE may be formed by laminating one or more layers. The encapsulation layer TFE includes at least one insulating layer. The encapsulation layer TFE according to one or more embodiments may include at least one inorganic film (hereinafter, encapsulation inorganic film). The encapsulation layer TFE according to one or more embodiments may also include at least one organic film (hereinafter, encapsulation organic film) and at least one encapsulation inorganic film.

[0093] The encapsulated inorganic film protects the display element layer DP-ED from moisture and / or oxygen, and the encapsulated organic film protects the display element layer DP-ED from foreign substances (such as dust particles). The encapsulated inorganic film may include silicon nitride, silicon oxynitride, silicon oxide, titanium oxide and / or aluminum oxide, etc., but the embodiments of the present disclosure are not particularly limited thereto. The encapsulated organic film may include acrylic compounds and / or epoxy compounds, etc. The encapsulated organic film may include a photopolymerizable organic material, but the embodiments of the present disclosure are not particularly limited thereto.

[0094] The encapsulation layer TFE may be disposed on the second electrode EL2 and may be disposed to fill the opening OH.

[0095] See also Figure 1 and Figure 2 , the display device DD may include one or more non-light emitting areas NPXA and also include light emitting areas PXA-R, PXA-G, and PXA-B. The light emitting areas PXA-R, PXA-G, and PXA-B may be areas in which light generated by the respective light emitting elements ED-1, ED-2, and ED-3 is emitted. The light emitting areas PXA-R, PXA-G, and PXA-B may be spaced and / or separated from each other on a plane.

[0096] Each of the light-emitting areas PXA-R, PXA-G, and PXA-B may be an area divided (i.e., defined) by the pixel defining layer PDL. The non-light-emitting area NPXA may be an area between adjacent light-emitting areas PXA-R, PXA-G, and PXA-B, and the non-light-emitting area NPXA corresponds to the pixel defining layer PDL. In one or more embodiments, in the specification, the light-emitting areas PXA-R, PXA-G, and PXA-B may correspond to pixels, respectively. The pixel defining layer PDL may divide the light-emitting elements ED-1, ED-2, and ED-3. The light-emitting layers EML-R, EML-G, and EML-B of the light-emitting elements ED-1, ED-2, and ED-3 may be arranged in the opening OH defined by the pixel defining layer PDL and separated from each other.

[0097] The light emitting areas PXA-R, PXA-G, and PXA-B may be divided into a plurality of groups according to the colors of light generated from the light emitting elements ED-1, ED-2, and ED-3. Figure 1 and Figure 2 In the display device DD of one or more embodiments explained in , three light emitting areas PXA-R, PXA-G and PXA-B that emit red light, green light and blue light respectively are explained by way of example. For example, the display device DD of one or more embodiments may include a red light emitting area PXA-R, a green light emitting area PXA-G and a blue light emitting area PXA-B that are separated from each other.

[0098] In the display device DD according to one or more embodiments, a plurality of light emitting elements ED-1, ED-2, and ED-3 may emit light beams having different wavelengths from each other. For example, in one or more embodiments, the display device DD may include a first light emitting element ED-1 emitting red light, a second light emitting element ED-2 emitting green light, and a third light emitting element ED-3 emitting blue light. For example, a red light emitting region PXA-R, a green light emitting region PXA-G, and a blue light emitting region PXA-B of the display device DD may correspond to the first light emitting element ED-1, the second light emitting element ED-2, and the third light emitting element ED-3, respectively.

[0099] However, the embodiments of the present disclosure are not limited thereto, and the first to third light emitting elements ED-1, ED-2, and ED-3 may emit light beams in substantially the same wavelength range or at least one light emitting element may emit light beams in a wavelength range different from that of other light emitting elements. For example, the first to third light emitting elements ED-1, ED-2, and ED-3 may all emit blue light.

[0100] The light emitting regions PXA-R, PXA-G, and PXA-B in the display device DD according to one or more embodiments may be arranged in a stripe form. Figure 1, a plurality of red light emitting areas PXA-R may be arranged along the second direction axis DR2, a plurality of green light emitting areas PXA-G may be arranged along the second direction axis DR2, and a plurality of blue light emitting areas PXA-B may be arranged along the second direction axis DR2. In one or more embodiments, the red light emitting areas PXA-R, the green light emitting areas PXA-G, and the blue light emitting areas PXA-B may be alternately arranged in this order along the first direction axis DR1.

[0101] Figure 1 and Figure 2 It is explained that all the light-emitting regions PXA-R, PXA-G, and PXA-B have substantially the same area, but the embodiments of the present disclosure are not limited thereto. Therefore, the light-emitting regions PXA-R, PXA-G, and PXA-B may have different areas from each other according to the wavelength range of the emitted light. In this case, the areas of the light-emitting regions PXA-R, PXA-G, and PXA-B may refer to the areas when viewed on a plane defined by the first direction axis DR1 and the second direction axis DR2. The third direction axis DR3 may be perpendicular to the plane defined by the first direction axis DR1 and the second direction axis DR2.

[0102] In one or more embodiments, the arrangement of the light-emitting areas PXA-R, PXA-G, and PXA-B is not limited to Figure 1 The arrangement of the red light emitting areas PXA-R, the green light emitting areas PXA-G and the blue light emitting areas PXA-B may be provided in one or more appropriate combinations according to the characteristics of the display quality desired or required in the display device DD. For example, the arrangement of the light emitting areas PXA-R, PXA-G and PXA-B may be in a honeycomb pattern. Layout or diamond )Layout( and Diamond is a registered trademark owned by Samsung Display Co., Ltd.).

[0103] In one or more embodiments, the areas of the light-emitting regions PXA-R, PXA-G, and PXA-B may be different from each other. For example, in one or more embodiments, the area of ​​the green light-emitting region PXA-G may be smaller than the area of ​​the blue light-emitting region PXA-B, but the embodiments of the present disclosure are not limited thereto.

[0104] Below, Figures 3 to 7 Each of the light emitting elements ED according to one or more embodiments may include a first electrode EL1, a hole transport region HTR, a light emitting layer EML, an electron transport region ETR, and a second electrode EL2 stacked in sequence.

[0105] and Figure 3 compared to, Figure 4 A cross-sectional view of a light emitting element ED according to one or more embodiments is illustrated, wherein the hole transport region HTR includes a hole injection layer HIL and a hole transport layer HTL, and the electron transport region ETR includes an electron injection layer EIL and an electron transport layer ETL. Figure 3 compared to, Figure 5 A cross-sectional view of a light emitting element ED according to one or more embodiments is illustrated, wherein the hole transport region HTR includes a hole injection layer HIL, a hole transport layer HTL, and an electron blocking layer EBL, and the electron transport region ETR includes an electron injection layer EIL, an electron transport layer ETL, and a hole blocking layer HBL. Figure 3 compared to, Figure 6 A cross-sectional view of a light emitting element ED according to one or more embodiments is illustrated, wherein the hole transport region HTR includes a hole injection layer HIL, a hole transport layer HTL, and a light emitting auxiliary layer EAL, and the electron transport region ETR includes an electron injection layer EIL, an electron transport layer ETL, and a hole blocking layer HBL. Figure 4 compared to, Figure 7 A cross-sectional view of a light emitting element ED according to one or more embodiments including a capping layer CPL disposed on the second electrode EL2 is illustrated.

[0106] The first electrode EL1 has conductivity (for example, is a conductor). The first electrode EL1 may be formed of a metal material, a metal alloy, or a conductive compound. The first electrode EL1 may be an anode or a cathode. However, the embodiments of the present disclosure are not limited thereto. In one or more embodiments, the first electrode EL1 may be a pixel electrode. The first electrode EL1 may be a transmissive electrode, a transflective electrode, or a reflective electrode. The first electrode EL1 may include at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, In, Sn, and Zn, a compound selected from two or more of these (among them), a mixture selected from two or more of these (among them), and / or an oxide thereof.

[0107] If the first electrode EL1 is a transmissive electrode, the first electrode EL1 may include a transparent metal oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO). If the first electrode EL1 is a transflective electrode or a reflective electrode, the first electrode EL1 may include at least one of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, and W, a compound or mixture thereof (e.g., any appropriate compound or mixture) (e.g., a mixture of Ag and Mg), or a material having a multilayer structure such as LiF / Ca (a stacked structure of LiF and Ca) or LiF / Al (a stacked structure of LiF and Al). In one or more embodiments, the first electrode EL1 may have a multilayer structure including a reflective film or a transflective film formed of the materials described herein, and a transparent conductive film formed of ITO, IZO, ZnO, and / or ITZO, etc. For example, the first electrode EL1 may have a three-layer structure of ITO / Ag / ITO, but the embodiments of the present disclosure are not limited thereto. In one or more embodiments, the first electrode EL1 may include a metal material described herein, a combination of at least two metal materials described herein, and / or an oxide of a metal material described herein, etc. The thickness of the first electrode EL1 may be about 700 angstroms. to about For example, the thickness of the first electrode EL1 may be about to about

[0108] The hole transport region HTR is provided on the first electrode EL1. The hole transport region HTR is disposed between the first electrode EL1 and the light emitting layer EML.

[0109] The hole transport region HTR may include at least one of a hole injection layer HIL, a hole transport layer HTL, an emission auxiliary layer EAL, and an electron blocking layer EBL. The emission auxiliary layer EAL may be referred to as a buffer layer. The thickness of the hole transport region HTR may be, for example, about 100 Å. to about

[0110] The hole transport region HTR may have a single layer formed of a single material, a single layer formed of a plurality of different materials, or a multi-layer structure including a plurality of layers formed of a plurality of different materials.

[0111] For example, the hole transport region HTR may have a single-layer structure of a hole injection layer HIL or a hole transport layer HTL, or may have a single-layer structure formed of a hole injection material and a hole transport material. In one or more embodiments, the hole transport region HTR may have a single-layer structure formed of a plurality of different materials, or a structure in which a hole injection layer HIL / hole transport layer HTL, a hole injection layer HIL / hole transport layer HTL / luminescence auxiliary layer EAL, a hole injection layer HIL / luminescence auxiliary layer EAL, a hole transport layer HTL / luminescence auxiliary layer EAL or a hole injection layer HIL / hole transport layer HTL / electron blocking layer EBL are stacked in sequence from the first electrode EL1, but the embodiments of the present disclosure are not limited thereto. In one or more embodiments, the hole transport layer HTL may have a single-layer structure or a multi-layer structure (having a plurality of layers).

[0112] The hole transport region HTR may be formed using one or more appropriate methods such as vacuum deposition, spin coating, casting, Langmuir-Brokett (LB), inkjet printing, laser printing, and laser induced thermal imaging (LITI). Amine compounds

[0113] The light-emitting element ED of one or more embodiments may include the amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR. In one or more embodiments, at least one of the hole injection layer HIL, the hole transport layer HTL, the electron blocking layer EBL, and the light-emitting auxiliary layer EAL may include the amine compound of one or more embodiments represented by Formula 1. For example, the light-emitting element ED of one or more embodiments may include the amine compound of one or more embodiments represented by Formula 1 in the hole transport layer HTL. Formula 1

[0114] The amine compound of one or more embodiments represented by Formula 1 may (for example, simultaneously) contain both a phenanthryl group and a substituted phenyl group bonded to a nitrogen atom (N). The amine compound of one or more embodiments represented by Formula 1 may contain a substituted or unsubstituted phenanthryl group directly bonded to a nitrogen atom (N), and a substituted or unsubstituted o-terphenyl derivative directly bonded to a nitrogen atom or bonded through a linker. In one or more embodiments, the amine compound of one or more embodiments represented by Formula 1 may be a monoamine compound excluding (for example, not containing) additional amine substituents.

[0115] In the amine compound of one or more embodiments represented by Formula 1, as explained herein, a substituted or unsubstituted phenanthryl group may be directly bonded to a nitrogen atom at the c1 position. In this specification, a phenanthryl group as a component bonded to a nitrogen atom of an amine compound may be referred to as a 3-phenanthryl group.

[0116] In one or more embodiments, in the amine compound of one or more embodiments represented by Formula 1, the substituted or unsubstituted o-terphenyl derivative may be directly bonded to the nitrogen atom at the c2 position or bonded to the nitrogen atom through a linker as explained herein. In this specification, the o-terphenyl derivative as a component bonded to the nitrogen atom of the amine compound may be referred to as a 3,4-substituted phenyl. In the o-terphenyl derivative, Ar 2 and Ar 3 The aryl group may be substituted or unsubstituted and may have 6 to 18 ring-forming carbon atoms.

[0117] The amine compound of one or more embodiments represented by Formula 1 may include 3-phenanthrenyl and 3,4-substituted phenyl, thereby adjusting its charge balance through three-dimensional aspects, and accordingly, may exhibit excellent or appropriate charge transport properties. For example, the amine compound of one or more embodiments represented by Formula 1 may include phenanthrenyl and o-terphenyl derivatives, each of which may be bonded to a nitrogen atom at a specific position, thereby having excellent or appropriate charge transport properties and material stability, and therefore, may contribute to high luminous efficiency and long life of the light-emitting element.

[0118] In formula 1, R 1 To R 7 and R are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 To R 7 It will not bond with adjacent groups to form a ring.

[0119] In one or more embodiments, R 1 To R 7 Each (e.g., all) may be a hydrogen atom, or at least one thereof may be a deuterium atom, at least one thereof may be a halogen atom, at least one thereof may be a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, or at least one thereof may be a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms. For example, in one or more embodiments, R 1 To R 7 Each (e.g., all) may be a hydrogen atom, or each (e.g., all) may be a deuterium atom, or at least one thereof may be a fluorine atom, at least one thereof may be a tert-butyl group, or at least one thereof may be a substituted or unsubstituted phenyl group. However, embodiments of the present disclosure are not limited thereto.

[0120] In Formula 1, n may be an integer selected from 1 to 3. In one or more embodiments, R a It may be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and / or may form a ring by bonding with an adjacent group.

[0121] When n is 2 or greater, multiple R a The R groups may each (eg, all) be the same, or at least one of them may be different from the rest of the groups. a In one or more embodiments, on the contrary, R a At least one of them may be a deuterium atom, at least one of them may be a halogen atom, or at least one of them may be a substituted or unsubstituted phenyl group. However, the embodiments of the present disclosure are not limited thereto.

[0122] In one or more embodiments, a plurality of adjacent R a They can form a ring by bonding to each other. a When the adjacent groups are bonded to each other to form a ring, R a and adjacent groups may bond to each other to form a saturated hydrocarbon ring or an unsaturated hydrocarbon ring. a Can be used with R a The substituted benzene rings are bonded to form a condensed ring.

[0123] In formula 1, L 1 and L 2 Each may independently be a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0124] For example, in Formula 1, L 1 It may be a directly connected, substituted or unsubstituted arylene group or a substituted or unsubstituted divalent dibenzoheterocyclopentadienyl group. In one or more embodiments, L 2 It may be a directly linked or substituted or unsubstituted arylene group.

[0125] In one or more embodiments, L 1 and L 2 Each may independently be a directly linked, substituted or unsubstituted phenylene group, a substituted or unsubstituted divalent biphenyl group, or a substituted or unsubstituted naphthylene group. However, the embodiments of the present disclosure are not limited thereto.

[0126] In formula 1, Ar 1It may be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 For direct connection Ar 1 For example, in the amine compound of one or more embodiments represented by Formula 1, excluding the case where L 1 For direct connection Ar 1 By (as explained herein) the formula Ar 1 -a indicates the situation. Formula Ar 1 -a

[0127] In one or more embodiments, Ar 1 It may be a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted dibenzoheterocyclopentadienyl group including O, S, N or Si as a ring-forming heteroatom, or a substituted or unsubstituted benzonaphthocyclopentadienyl group including O or S as a ring-forming heteroatom.

[0128] When Ar 1 When Ar is a substituted or unsubstituted dibenzoheterocyclopentadienyl group, 1 It may be a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted carbazolyl group, or a substituted or unsubstituted dibenzothioyl group. However, the embodiments of the present disclosure are not limited thereto.

[0129] When Ar 1 When Ar is a substituted or unsubstituted benzonaphthaleneheterocyclopentadienyl group, 1 It may be a substituted or unsubstituted benzonaphthofuranyl group or a substituted or unsubstituted benzonaphthothienyl group. However, the embodiments of the present disclosure are not limited thereto.

[0130] In formula 1, Ar 2 and Ar 3 and Ar may each independently be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group or a substituted or unsubstituted phenanthryl group. 2 and Ar 3 Each of the 2 and Ar 3 Both) do not include a substituted or unsubstituted carbazolyl group as a substituent.

[0131] In one or more embodiments, in the amine compound of one or more embodiments represented by Formula 1, Ar 1 ,Ar 2 and Ar 3 Each of the 1 ,Ar 2 and Ar 3 For example, the amine compound of one or more embodiments represented by Formula 1 does not contain a triphenylene represented by Formula Ar-x (as explained herein). Formula Ar-x

[0132] In the amine compound of one or more embodiments represented by Formula 1, at least one hydrogen atom may be substituted with a deuterium atom. In Formula 1, R 1 To R 7 and R a may be each independently a deuterium atom, or may contain a deuterium atom as a substituent. In one or more embodiments, L 1 and L 2 Each may independently contain a deuterium atom as a substituent. In one or more embodiments, Ar 1 ,Ar 2 and Ar 3 Each independently may contain a deuterium atom as a substituent.

[0133] In formula 1, R 1 To R 7 , R a ,Ar 1 ,Ar 2 ,Ar 3 , L 1 and L 2 Substituted or unsubstituted amine groups may not be contained (eg, may be excluded).For example, the amine compound of one or more embodiments represented by Formula 1 may be a monoamine compound excluding (eg, not containing) additional amine groups.

[0134] Formula 1 can be represented by Formula 1A. Formula 1A

[0135] In Formula 1A, m and p may each independently be an integer selected from 1 to 5. In one or more embodiments, R b and R cEach may independently be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and / or may form a ring by bonding with an adjacent group.

[0136] When m is 2 or greater, multiple R b may be each (e.g., all) the same, or at least one of them may be different from the remaining groups. In one or more embodiments, when p is 2 or greater, multiple R c The R groups may each (eg, all) be the same, or at least one of them may be different from the rest of the groups. b and multiple R c In one or more embodiments, on the contrary, multiple R b and multiple R c At least one of them may be a deuterium atom, at least one of them may be a halogen atom, or at least one of them may be a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms. However, the embodiments of the present disclosure are not limited thereto.

[0137] In one or more embodiments, a plurality of adjacent R a , multiple adjacent R b or multiple adjacent R c They can form a ring by bonding to each other. a When the adjacent groups are bonded to each other to form a ring, R a and adjacent groups may bond to each other to form a saturated hydrocarbon ring or an unsaturated hydrocarbon ring. b When the adjacent groups are bonded to each other to form a ring, R b and adjacent groups may bond to each other to form a saturated hydrocarbon ring or an unsaturated hydrocarbon ring. c When the adjacent groups are bonded to each other to form a ring, R c and adjacent groups may bond to each other to form a saturated hydrocarbon ring or an unsaturated hydrocarbon ring. In one or more embodiments, even when R a When the adjacent groups are bonded to each other to form a ring, when R b When the adjacent groups are bonded to each other to form a ring, or when R c When the adjacent groups are bonded to each other to form a ring, the amine compound of one or more embodiments represented by Formula 1 does not contain triphenylene.

[0138] In Formula 1A, the contents described herein with reference to Formula 1 may also be applied to Ar 1 , L 1 , L 2 , R 1To R 7 , R a and n.

[0139] In the amine compound of one or more embodiments represented by Formula 1, the 3,4-substituted phenyl group may be directly bonded to the nitrogen atom of the amine compound or bonded to the nitrogen atom through a linker.

[0140] As described herein, Formula 1 may be represented by Formula 1-1 or Formula 1-2. Formula 1-1 shows one or more embodiments of an amine compound in which a 3,4-substituted phenyl group is directly bonded to a nitrogen atom, and Formula 1-2 shows one or more embodiments of an amine compound in which a 3,4-substituted phenyl group is bonded to a nitrogen atom via L as a linker. 2a bonded to the nitrogen atom. Formula 1-1 Formula 1-2

[0141] In formula 1-2, L 2a It may be a substituted or unsubstituted phenylene group or a substituted or unsubstituted divalent biphenyl group. In one or more embodiments, in Formula 1-1 and Formula 1-2, the contents described herein with reference to Formula 1 may also be applied to Ar 1 ,Ar 2 ,Ar 3 , L 1 , R 1 To R 7 , R a and n.

[0142] The amine compound of one or more embodiments represented by Formula 1 may be represented by any one (e.g., one) of the compounds selected from Compound Group 1. The hole transport region HTR of the light-emitting element ED of one or more embodiments may include at least one amine compound selected from the amine compounds disclosed in Compound Group 1. In Compound Group 1, D is a deuterium atom. Compound Group 1

[0143] The amine compound of one or more embodiments represented by Formula 1 includes a phenanthryl group and a 3,4-substituted phenyl group (ortho-terphenyl derivative portion), and in particular, it may be characterized in that the phenanthryl group and the 3,4-substituted phenyl group are each connected to the nitrogen atom of the amine compound at a specific position. By introducing such a substituent and specifying the substitution position, the amine compound of one or more embodiments represented by Formula 1 may have excellent or appropriate electrical stability and high charge transfer capability. Accordingly, the lifespan of the amine compound of one or more embodiments represented by Formula 1 may be improved. In one or more embodiments, the luminous efficiency and lifespan of the light-emitting element containing the amine compound of one or more embodiments represented by Formula 1 may also be improved.

[0144] In the light-emitting element ED of one or more embodiments, the hole transport region HTR may further include a compound represented by Formula H-1. For example, the light-emitting element ED of one or more embodiments may include a compound represented by Formula H-1 in another layer of the hole transport region HTR, and the amine compound of one or more embodiments represented by Formula 1 described herein is not contained in another layer of the hole transport region HTR. However, embodiments of the present disclosure are not limited thereto. Formula H-1

[0145] In formula H-1, L 1 and L 2 Each of a and b may be independently a directly connected, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. a and b may be independently an integer selected from 0 to 10. In one or more embodiments, when a or b is an integer of 2 or more, a plurality of L 1 and multiple L 2 Each may independently be a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0146] In formula H-1, Ar 1 and Ar 2 may be each independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. In one or more embodiments, in formula H-1, Ar 3 It may be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0147] The compound represented by formula H-1 may be a monoamine compound. In one or more embodiments, the compound represented by formula H-1 may be a compound wherein Ar 1 To Ar 3 In one or more embodiments, the compound represented by formula H-1 may be a diamine compound in which Ar 1 and Ar 2 A carbazole compound containing a substituted or unsubstituted carbazole group in at least one of Ar 1 and Ar 2 A fluorene compound in which at least one of the compounds contains a substituted or unsubstituted fluorenyl group.

[0148] The compound represented by Formula H-1 may be represented by any one (eg, one) of the compounds selected from Compound Group H. However, the compounds listed in Compound Group H are merely examples. The compound represented by Formula H-1 is not limited to the compounds listed in Compound Group H. Compound Group H

[0149] The hole transport region HTR may further include a phthalocyanine compound selected from the group consisting of copper phthalocyanine, N 1 ,N 1 '-([1,1'-biphenyl]-4,4'-diyl)bis(N 1 -phenyl-N 4 ,N 4-dimethylphenylbenzene-1,4-diamine) (DNTPD), 4,4',4"-[tri(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), 4,4',4"-tri(N,N-diphenylamino)triphenylamine (TDATA), 4,4',4"-tri[N-(2-naphthyl)-N-phenylamino]triphenylamine (2-TNATA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB), triphenylamine-containing polyetherketone (TPAPEK), 4-isopropyl-4'-methyldiphenyliodonium [tetrakis(pentafluorophenyl)borate] and dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN), etc.

[0150] The hole transport region HTR may further include at least one selected from carbazole derivatives (such as N-phenylcarbazole and polyvinylcarbazole), fluorene derivatives and triphenylamine derivatives (such as N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4,4',4"-tri(carbazole-9-yl)triphenylamine (TCTA), N,N'-di(naphthalene-l-yl)-N,N'-diphenyl-benzidine (NPB), 4,4'-cyclohexylenebis[N,N-bis(4-methylphenyl)aniline] (TAPC), 4,4'-bis[N,N'-(3-tolyl)amino]-3,3'-dimethylbiphenyl (HMTPD) and / or (1,3-bis(carbazole-9-yl)benzene (mCP), etc.).

[0151] In one or more embodiments, the hole transport region HTR may further include 9-(4-tert-butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi), 9-phenyl-9H-3,9'-bicarbazole (CCP) and / or 1,3-bis(1,8-dimethyl-9H-carbazole-9-yl)benzene (mDCP), etc.

[0152] The hole transport region HTR may include the compound described herein in at least one of the hole injection layer HIL, the hole transport layer HTL, the emission auxiliary layer EAL, and the electron blocking layer EBL.

[0153] The thickness of the hole transport region HTR may be about to about For example, about to about When the hole transport region HTR includes the hole injection layer HIL, the thickness of the hole injection layer HIL may be, for example, about 300 Å. to about When the hole transport region HTR includes the hole transport layer HTL, the thickness of the hole transport layer HTL may be about 100 Å. to about When the hole transport region HTR includes the electron blocking layer EBL, the thickness of the electron blocking layer EBL may be about 100 Å. to about When the thicknesses of the hole transport region HTR, the hole injection layer HIL, the hole transport layer HTL, and the electron blocking layer EBL satisfy the ranges described herein, satisfactory hole transport properties may be obtained without significantly increasing driving voltage.

[0154] In addition to the materials mentioned herein, the hole transport region HTR may further include a charge generation material to improve conductivity. The charge generation material may be uniformly (substantially uniformly) or non-uniformly (substantially non-uniformly) dispersed in the hole transport region HTR. The charge generation material may be, for example, a p-dopant. The p-dopant may include at least one of a metal halide, a quinone derivative, a metal oxide, and a cyano-containing compound, but the embodiments of the present disclosure are not limited thereto. For example, the p-dopant may be a metal halide (such as CuI and RbI), a quinone derivative (such as tetracyanoquinodimethane (TCNQ) and 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanoquinodimethane (F4-TCNQ)), a metal oxide (such as tungsten oxide and molybdenum oxide) and / or a cyano-containing compound (such as dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN) and 4-[[2,3-bis[cyano-(4-cyano-2,3,5,6-tetrafluorophenyl)methylene]cyclopropyl]-cyanomethyl]-2,3,5,6-tetrafluorobenzonitrile (NDP9)), etc., but the embodiments of the present disclosure are not limited thereto.

[0155] As described herein, in addition to the hole injection layer HIL and the hole transport layer HTL, the hole transport region HTR may further include at least one of a light-emitting auxiliary layer EAL and an electron blocking layer EBL. The light-emitting auxiliary layer EAL can increase the luminous efficiency by compensating the resonance distance according to the wavelength of the light emitted from the light-emitting layer EML and controlling the charge balance. In one or more embodiments, the light-emitting auxiliary layer EAL can also be used to prevent or reduce the injection of electrons into the hole transport region HTR. The light-emitting auxiliary layer EAL may include (may be included in) a material in the hole transport region HTR. The electron blocking layer EBL is a layer for preventing or reducing the injection of electrons from the electron transport region ETR into the hole transport region HTR.

[0156] According to the light emitting element of one or more embodiments, the light emitting layer EML is provided on the hole transport region HTR. The light emitting layer EML may have, for example, about to about or about to about The light emitting layer EML may have a single layer formed of a single material, a single layer formed of a plurality of different materials, or a multilayer structure having a plurality of layers formed of a plurality of different materials.

[0157] In the light-emitting element ED of one or more embodiments, the light-emitting layer EML may emit blue light. The light-emitting element ED of one or more embodiments may include the amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR, and may show high luminous efficiency and long life properties in the blue emission region. The light-emitting element ED of one or more embodiments includes the amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR, and the light-emitting layer EML may emit blue fluorescence. However, one or more embodiments of the present disclosure are not limited thereto.

[0158] In the light emitting element ED of one or more embodiments, the light emitting layer EML may include an anthracene derivative, a pyrene derivative, a fluoranthene derivative, a 1,2-triphenylene derivative, a dihydrobenzanthracene derivative, or a triphenylene derivative. For example, the light emitting layer EML may include an anthracene derivative or a pyrene derivative.

[0159] In the light emitting element ED of the embodiment, Figures 3 to 7 As shown in FIG. 1 , the emission layer EML may include a host and a dopant, and the emission layer EML may include a compound represented by Formula E-1. The compound represented by Formula E-1 may be used as a fluorescent host material. Formula E-1

[0160] In formula E-1, R 31 To R 40 Each of R and R may be independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and / or may be combined with an adjacent group to form a ring. In one or more embodiments, R 31 To R 40 It may combine with an adjacent group to form a saturated hydrocarbon ring, an unsaturated hydrocarbon ring, a saturated heterocyclic ring, or an unsaturated heterocyclic ring.

[0161] In Formula E-1, "c" and "d" may each independently be an integer selected from 0 to 5.

[0162] Formula E-1 may be represented by any one selected from Compound E1 to Compound E19.

[0163] In one or more embodiments, the light emitting layer EML may include a compound represented by Formula E-2a or Formula E-2b. The compound represented by Formula E-2a or Formula E-2b may be used as a phosphorescent host material. Formula E-2a

[0164] In Formula E-2a, "a" may be an integer selected from 0 to 10, L a It may be a directly linked, substituted or unsubstituted arylene group of 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group of 2 to 30 ring carbon atoms. In one or more embodiments, if "a" is an integer of 2 or greater, multiple L a Each may independently be a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0165] In one or more embodiments, in Formula E-2a, A 1 To A 5 Can be N or CR independently i . R a To R i Each may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms, or may combine with an adjacent group to form a ring. a To R i It may combine with adjacent groups to form a hydrocarbon ring group or a heterocyclic group including N, O and / or S etc. as ring-constituting atoms.

[0166] In one or more embodiments, in Formula E-2a, (for example, selected from) A 1 To A 5 Two or three of them may be N, and the rest may be CR i . Formula E-2b

[0167] In Formula E-2b, Cbz1 and Cbz2 may each independently be an unsubstituted carbazolyl group, or a carbazolyl group substituted with an aromatic group having 6 to 30 ring carbon atoms. b It may be a directly linked, substituted or unsubstituted arylene group of 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group of 2 to 30 ring carbon atoms. "b" is an integer selected from 0 to 10, and if "b" is an integer of 2 or more, multiple L b Each may independently be a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0168] The compound represented by formula E-2a or formula E-2b may be represented by any one of the compounds selected from compound group E-2. However, the compounds listed in compound group E-2 are only for illustration, and the compound represented by formula E-2a or formula E-2b is not limited to the compounds represented in compound group E-2. Compound Group E-2

[0169] The light emitting layer EML may further include a common material in the art which is very suitable as a host material. For example, the light emitting layer EML may include at least one of bis(4-(9H-carbazole-9-yl)phenyl)diphenylsilane (BCPDS), (4-(1-(4-(diphenylamino)phenyl)cyclohexyl)phenyl)diphenyl-phosphine oxide (POPCPA), bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO), 4,4'-bis(carbazole-9-yl)biphenyl (CBP), 1,3-bis(carbazole-9-yl)benzene (mCP), 2,8-bis(diphenylphosphoryl)dibenzo[b,d]furan (PPF), 4,4',4"-tri(carbazole-9-yl)-triphenylamine (TCTA), and 1,3,5-tri(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBi) as a host material. However, one or more embodiments of the present disclosure are not limited thereto. For example, tris(8-hydroxyquinoline)aluminum (Alq 3 ), 9,10-di(naphthalene-2-yl)anthracene (ADN), 2-tert-butyl-9,10-di(naphthalene-2-yl)anthracene (TBADN), distyrylarene (DSA), 4,4'-bis(9-carbazolyl)-2,2'-dimethyl-biphenyl (CDBP), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), hexaphenylcyclotriphosphazene (CP1), 1,4-bis(triphenylsilyl)benzene (UGH2), hexaphenylcyclotrisiloxane (DPSiO 3) and / or octaphenylcyclotetrasiloxane (DPSiO 4 ) etc. can be used as the main material.

[0170] The emission layer EML may include a compound represented by Formula Ma or Formula Mb. The compound represented by Formula Ma or Formula Mb may be used as a phosphorescent dopant material. Formula Ma

[0171] In formula Ma, Y 1 To Y 4 and Z 1 To Z 4 Can be independently CR 1 or N, and R 1 To R 4 Each of them may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, and / or may be combined with adjacent groups to form a ring. In formula Ma, "m" is 0 or 1, and "n" is 2 or 3. In formula Ma, if "m" is 0, "n" is 3, and if "m" is 1, "n" is 2.

[0172] The compound represented by formula Ma may be represented by any one selected from compound M-a1 to compound M-a25. However, compound M-a1 to compound M-a25 are for illustration, and the compound represented by formula Ma is not limited to the compounds represented by compound M-a1 to compound M-a25.

[0173] Compound M-a1 and Compound M-a2 may be used as red dopant materials, and Compound M-a3 to Compound M-a5 may be used as green dopant materials. Formula Mb

[0174] In formula Mb, Q 1 To Q 4 Each of them may be independently C or N, and C1 to C4 may be each independently a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms. 21 To L 24Can be directly connected, *-O-*, *-S-*, substituted or unsubstituted alkylene group of 1 to 20 carbon atoms, substituted or unsubstituted arylene group of 6 to 30 ring carbon atoms, or substituted or unsubstituted heteroarylene group of 2 to 30 ring carbon atoms, and e1 to e4 may each independently be 0 or 1. R 31 To R 39 Each of d1 to d4 may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, or combine with an adjacent group to form a ring, and d1 to d4 may be independently an integer selected from 0 to 4.

[0175] The compound represented by Formula Mb may be used as a blue phosphorescent dopant or a green phosphorescent dopant.

[0176] The compound represented by the formula Mb may be represented by any one selected from the following compounds. However, the following compounds are only illustrative, and the compound represented by the formula Mb is not limited to the following compounds.

[0177] In the compounds herein, R, R 38 and R 39 Each may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0178] The light emitting layer EML may include any one selected from Formula Fa to Formula Fc. The compounds represented by Formula Fa to Formula Fc may be used as a fluorescent dopant material. Formula

[0179] In formula Fa, R a To R j The two of them can be independently *-NAr 1 Ar 2 Substituted. Selected from R a To R j Unrecognized*-NAr 1 Ar 2The remaining substituted groups may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms.

[0180] In *-NAr 1 Ar 2 in Ar 1 and Ar 2 Each of them may be independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 and Ar 2 At least one of may be a heteroaryl group including O or S as a ring-forming atom. Formula Fb

[0181] In formula Fb, R a and R b Each may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms, or may combine with an adjacent group to form a ring. Ar 1 To Ar 4 Each may independently be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0182] In Formula Fb, U and V may each independently be a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms. 1 To Ar 4 At least one of may be a heteroaryl group including O or S as a ring-forming atom.

[0183] In formula Fb, the number of rings represented by U and V may be 0 or 1 independently of each other. For example, in formula Fb, if the number of U or V is 1, one ring forms a condensed ring in the portion marked by U or V, and if the number of U or V is 0, there is no ring in the portion marked by U or V. For example, if the number of U is 0 and the number of V is 1, or if the number of U is 1 and the number of V is 0, the condensed ring having a fluorene core of formula Fb may be a ring compound having four rings. In one or more embodiments, if the number of both U and V (for example, at the same time) is 0, the condensed ring having a fluorene core of formula Fb may be a ring compound having three rings. In one or more embodiments, if the number of both U and V (for example, at the same time) is 1, the condensed ring having a fluorene core of formula Fb may be a ring compound having five rings. Formula Fc

[0184] In Formula Fc, A 1 and A 2 can be independently O, S, Se or NR m , and R m R may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 To R 11 Each may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and / or may combine with an adjacent group to form a ring.

[0185] In Formula Fc, A 1 and A 2 Each of A and B may independently combine with a substituent of an adjacent ring to form a fused ring. 1 and A 2 Can be independently NR m , A 1 Can be used with R 4 or R 5 Combine to form a ring. In one or more embodiments, A 2 Can be used with R 7 or R 8 Combine to form a ring.

[0186] In one or more embodiments, the light-emitting layer EML may include styryl derivatives (e.g., 1,4-bis[2-(3-N-ethylcarbazolyl)vinyl]benzene (BCzVB), 4-(di-p-tolylamino)-4'-[(di-p-tolylamino)styryl]stilbene (DPAVB), N-(4-((E)-2-(6-((E)-4-(diphenylamino)styryl)naphthalen-2-yl)vinyl)phenyl)-N-phenylaniline (N-BDAVBi), and 4,4'-bis[2-(4-(N,N-diphenylamino)phenyl)vinyl]biphenyl (DPAVBi)), perylene and its derivatives (e.g., 2,5,8,11-tetra-tert-butylperylene (TBP)), and / or pyrene and its derivatives (e.g., 1,1'-dipyrene, 1,4-dipyrenylbenzene, and 1,4-bis(N,N-diphenylamino)pyrene), etc. as appropriate dopant materials.

[0187] In one or more embodiments, if a plurality of light-emitting layers EML are included, at least one light-emitting layer EML may include a suitable phosphorescent dopant material. For example, the phosphorescent dopant may utilize a metal complex including iridium (Ir), platinum (Pt), osmium (Os), gold (Au), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) and / or thulium (Tm). For example, bis(4,6-difluorophenylpyridyl-N,C2') picolinyl iridium (III) (FIrpic), bis(2,4-difluorophenylpyridyl)-tetra(1-pyrazolyl) borate iridium (III) (FIr6) or octaethylporphyrin platinum (PtOEP) may be used as a phosphorescent dopant. However, one or more embodiments of the present disclosure are not limited thereto.

[0188] In one or more embodiments, in the light-emitting element ED according to one or more embodiments, the light-emitting layer EML may be a delayed fluorescence light-emitting layer including a host and a dopant. More specifically, the light-emitting layer EML may emit thermally activated delayed fluorescence (TADF). In the light-emitting element ED according to one or more embodiments, the light-emitting layer EML may include an appropriate thermally activated delayed fluorescence dopant.

[0189] In one or more embodiments, the light emitting layer EML of the light emitting element ED may include a plurality of host materials, a thermally activated delayed fluorescence dopant, and a phosphorescence sensitizer.

[0190] The light emitting layer EML may include a quantum dot material. The core of the quantum dot may be selected from a II-VI group compound, an I-II-VI group compound, an II-IV-VI group compound, an I-II-IV-VI group compound, an II-IV-V group compound, a III-VI group compound, an I-III-VI group compound, a III-V group compound, a III-II-V group compound, an IV-VI group compound, a IV group element, a IV group compound, and / or any appropriate combination thereof.

[0191] The II-VI compounds may be selected from the group consisting of: binary compounds selected from the group consisting of CdSe, CdTe, CdS, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof; ternary compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, Cd ZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof; and a quaternary compound selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and mixtures thereof. The I-II-VI group compound may be selected from CuZnS, and the II-IV-VI group compound may be selected from ZnSnS, etc. The I-II-IV-VI group compound may be selected from a quaternary compound, which is selected from Cu 2 ZnSnS 2 , Cu 2 ZnSnS 4 , Cu 2 ZnSnSe 4 、Ag 2 ZnSnS 2 and mixtures thereof. Examples of Group II-IV-V compounds may be selected from ternary compounds selected from ZnSnP, ZnSnP 2 、ZnSnAs 2 、ZnGeP 2 、ZnGeAs 2 、CdSnP 2 and CdGeP 2 and mixtures thereof.

[0192] Group III-VI compounds may include: binary compounds such as In 2 S 3 or In 2 Se 3 , ternary compounds such as InGaS 3 or InGaSe 3 , or any combination thereof.

[0193] The Group I-III-VI compound may be (e.g., selected from): a ternary compound selected from AgInS, AgInS 2 、CuInS、CuInS 2 、AgGaS 2 、CuGaS 2 、CuGaO 2 、AgGaO 2 、AgAlO 2 and mixtures thereof; or quaternary compounds such as AgInGaS 2 、CuInGaS 2 and mixtures thereof.

[0194] The III-V compound may be selected from the group consisting of a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; a ternary compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; and a quaternary compound selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. In one or more embodiments, the III-V compound may further include a Group II metal. For example, InZnP or the like may be selected as the Group III-II-V compound.

[0195] The IV-VI group compound may be selected from the group consisting of: a binary compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe and mixtures thereof; a ternary compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and mixtures thereof; and a quaternary compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe and mixtures thereof. The IV group element may be selected from the group consisting of Si, Ge and mixtures thereof. The IV group compound may be a binary compound selected from the group consisting of SiC, SiGe and mixtures thereof.

[0196] Each element included in a multi-component compound (such as a binary compound, a ternary compound, or a quaternary compound) may be present in the particle in a substantially uniform or substantially non-uniform concentration distribution. For example, the general formula may refer to the type (species) of elements included in the compound, and the ratio of elements in the compound may be different. For example, AgInGaS 2 Can refer to AgIn x Ga 1-x S 2 (where 0<x<1).

[0197] In one or more embodiments, the quantum dot may have a single structure in which the concentration of each element included in the quantum dot is substantially uniform or a core-shell dual structure. For example, the material included in the core may be different from the material included in the shell.

[0198] The shell of the quantum dot can be used as a protective layer to prevent or reduce the chemical denaturation of the core to maintain the semiconductor properties, and / or a charging layer to give the quantum dot electrophoretic properties. The shell can be a single layer or multiple layers. The interface between the core and the shell can have a concentration gradient, wherein the concentration of the element present in the shell becomes lower towards the center of the core.

[0199] Examples of the shell of a quantum dot may include metal oxides or non-metal oxides, semiconductor compounds, and / or any suitable combination thereof. For example, the metal oxide or non-metal oxide may be a binary compound such as SiO 2 、Al 2 O 3 、TiO 2 、ZnO、MnO、Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co3 O 4 or NiO, or ternary compounds such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 or CoMn 2 O 4 , but the embodiments of the present disclosure are not limited thereto.

[0200] Furthermore, examples of semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP and / or AlSb, etc., but embodiments of the present disclosure are not limited thereto.

[0201] Each element included in a polynary compound (such as a binary compound or a ternary compound) may be present in the particle with a substantially uniform or non-substantially uniform concentration distribution. For example, the general formula may refer to the type (species) of elements included in the compound, and the ratio of elements in the compound may be different.

[0202] The quantum dots may have a full width at half maximum (FWHM) of an emission wavelength spectrum of about 45 nm or less, about 40 nm or less, or about 30 nm or less, and may improve color purity or color reproducibility within the described range. In one or more embodiments, light emitted by such quantum dots is emitted in each (e.g., any or all) direction, and thus may improve wide viewing angles.

[0203] In one or more embodiments, although the form of quantum dots is not particularly limited, as long as it is a form commonly used in the art, more specifically, quantum dots in the form of spherical nanoparticles, pyramidal nanoparticles, multi-arm nanoparticles, cubic nanoparticles, nanotubes, nanowires, nanofibers and / or nanoplates can be used.

[0204] As the size of the quantum dots is adjusted or the ratio of elements in the quantum dot compound is adjusted, the band gap can be controlled, so that one or more appropriate wavelength ranges of light can be obtained in the quantum dot light-emitting layer. Therefore, using the described quantum dots (using quantum dots of different sizes or quantum dot compounds of different element ratios), a light-emitting element that emits light of one or more appropriate wavelength ranges can be realized. For example, the size of the quantum dots or the ratio of elements in the quantum dot compound can be selected to emit red light, green light, and / or blue light. In one or more embodiments, the quantum dots can be configured to emit white light by combining one or more appropriate colors of light.

[0205] exist Figures 3 to 7 In each of the light emitting elements ED of the embodiments illustrated in , an electron transport region ETR is provided on the light emitting layer EML. The electron transport region ETR may include at least one of a hole blocking layer HBL, an electron transport layer ETL, and an electron injection layer EIL, but the embodiments of the present disclosure are not limited thereto.

[0206] The electron transport region ETR may have a single layer formed of a single material, a single layer formed of a plurality of different materials, or a multilayer structure including a plurality of layers formed of a plurality of different materials.

[0207] For example, the electron transport region ETR may have a single-layer structure of an electron injection layer EIL or an electron transport layer ETL, or may have a single-layer structure formed of an electron injection material and an electron transport material. In one or more embodiments, the electron transport region ETR may have a single-layer structure formed of a plurality of different materials, or may have a structure in which an electron transport layer ETL / electron injection layer EIL, a hole blocking layer HBL / electron transport layer ETL / electron injection layer EIL are stacked in sequence from the light emitting layer EML, but the embodiments of the present disclosure are not limited thereto. The electron transport region ETR may have, for example, about to about Thickness.

[0208] The electron transport region ETR may be formed using one or more appropriate methods such as vacuum deposition, spin coating, casting, Langmuir-Brokett (LB), inkjet printing, laser printing, and laser induced thermal imaging (LITI).

[0209] The electron transport region ETR may include a compound represented by Formula ET-2. Formula ET-2

[0210] In formula ET-2, selected from X 1 To X 3 At least one of them is N, and the rest (e.g., selected from X 1 To X 3 Any remaining part of ) can be CR a . R a Ar may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 To Ar 3Each may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0211] In Formula ET-2, a to c may each independently be an integer selected from 0 to 10. In Formula ET-2, L 1 To L 3 Each of L is independently a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. In one or more embodiments, if (for example, when) a to c are each independently an integer of 2 or more, L 1 To L 3 Each may independently be a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0212] The electron transport region ETR may include an anthracene compound. However, the embodiments of the present disclosure are not limited thereto, and the electron transport region ETR may include, for example, tris(8-hydroxyquinoline)aluminum (Alq 3 ), 1,3,5-tris[(3-pyridyl)-phenyl-3-yl]benzene, 2,4,6-tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazine, 2-(4-(N-phenylbenzimidazol-1-yl)phenyl)-9,10-dinaphthylanthracene, 1,3,5-tris(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBi), 2,9-dimethyl-4,7-diphenyl 1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), 4-(naphthalene-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ), 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole ( t Bu-PBD), bis(2-methyl-8-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum (BAlq), bis(benzoquinoline-10-hydroxy)beryllium (Bebq 2 ), 9,10-di(naphthalene-2-yl)anthracene (ADN), 1,3-bis[3,5-di(pyridin-3-yl)phenyl]benzene (BmPyPhB) and / or mixtures thereof.

[0213] The electron transport region ETR may include at least one selected from the group consisting of compounds ET1 to ET36.

[0214] In one or more embodiments, the electron transport region ETR may include metal halides such as LiF, NaCl, CsF, RbCl, RbI, CuI and KI, lanthanide metals such as Yb, and co-deposited materials of metal halides and lanthanide metals. For example, the electron transport region ETR may include KI:Yb, RbI:Yb and / or LiF:Yb as co-deposited materials. In one or more embodiments, the electron transport region ETR may use metal oxides such as Li 2 O or BaO, and / or 8-hydroxy-quinoline lithium (Liq), etc., but the embodiments of the present disclosure are not limited thereto. The electron transport region ETR can also be formed by a mixture material of an electron transport material and an insulating organic metal salt. The insulating organic metal salt may be a material with an energy band gap of about 4 electron volts (eV) or greater. For example, the insulating organic metal salt may include, for example, a metal acetate, a metal benzoate, a metal acetoacetate, a metal acetylacetonate, or a metal stearate.

[0215] In addition to the materials described herein, the electron transport region ETR may further include at least one of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), diphenyl(4-(triphenylsilyl)phenyl)phosphine oxide (TSPO1) and 4,7-diphenyl-1,10-phenanthroline (Bphen) (for example, at least one selected from 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), diphenyl(4-(triphenylsilyl)phenyl)phosphine oxide (TSPO1) and 4,7-diphenyl-1,10-phenanthroline (Bphen)), but embodiments of the present disclosure are not limited thereto.

[0216] The electron transport region ETR may include the compound described herein for the electron transport region ETR in at least one of the electron injection layer EIL, the electron transport layer ETL, and the hole blocking layer HBL.

[0217] When the electron transport region ETR includes the electron transport layer ETL, the electron transport layer ETL may have a thickness of about to about For example, about to about If the thickness of the electron transport layer ETL satisfies the aforementioned range, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage. When the electron transport region ETR includes the electron injection layer EIL, the electron injection layer EIL may have a thickness of about to about For example, about to about If the thickness of the electron injection layer EIL satisfies the range described herein, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0218] The second electrode EL2 is provided on the electron transport region ETR. The second electrode EL2 may be a common electrode. The second electrode EL2 may be a cathode or an anode, but the embodiments of the present disclosure are not limited thereto. For example, if (for example, when) the first electrode EL1 is an anode, the second electrode EL2 may be a cathode, and if (for example, when) the first electrode EL1 is a cathode, the second electrode EL2 may be an anode. The second electrode may include at least one of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, In, Sn and Zn, a compound selected from two or more of these, a mixture selected from two or more of these, or an oxide thereof.

[0219] The second electrode EL2 may be a transmissive electrode, a transflective electrode or a reflective electrode. When the second electrode EL2 is a transmissive electrode, the second electrode EL2 may be formed of a transparent metal oxide, for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and / or indium tin zinc oxide (ITZO).

[0220] When the second electrode EL2 is a transflective electrode or a reflective electrode, the second electrode EL2 may include at least one of Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb and W, or a compound or mixture thereof (e.g., AgMg, AgYb or MgYb), or a material having a multilayer structure such as LiF / Ca (a stacked structure of LiF and Ca) or LiF / Al (a stacked structure of LiF and Al). In one or more embodiments, the second electrode EL2 may have a multilayer structure including a reflective film or a transflective film formed of a material described herein and a transparent conductive film formed of ITO, IZO, ZnO and / or ITZO, etc. For example, the second electrode EL2 may include a metal material described herein, a combination of at least two of the metal materials described herein, and / or an oxide of a metal material described herein, etc.

[0221] In one or more embodiments, the second electrode EL2 may be connected to the auxiliary electrode. If the second electrode EL2 is connected to the auxiliary electrode, the resistance of the second electrode EL2 may be reduced.

[0222] In one or more embodiments, a capping layer CPL may be further disposed on the second electrode EL2 of the light emitting element ED of one or more embodiments. The capping layer CPL may include a multi-layer or a single layer.

[0223] In one or more embodiments, the capping layer CPL may be an organic layer or an inorganic layer. For example, if (for example, when) the capping layer CPL contains an inorganic material, the inorganic material may include an alkali metal compound (for example, LiF), an alkaline earth metal compound (for example, MgF 2 )、SiON、SiN x and / or SiO y wait.

[0224] For example, if (eg, when) the capping layer CPL includes an organic material, the organic material may include N,N'-bis(1-naphthyl)-N,N'-bis(phenyl)-2,2'-dimethylbenzidine (α-NPD), NPB, TPD, m-MTDATA, Alq 3 , CuPc, N4,N4,N4',N4'-tetrakis(biphenyl-4-yl)biphenyl-4,4'-diamine (TPD15) and / or 4,4',4"-tris(carbazole-9-yl)triphenylamine (TCTA), etc., or epoxy resins or acrylates (such as methacrylates). However, the embodiments of the present disclosure are not limited thereto, and the capping layer CPL may include at least one of compounds P1 to P5.

[0225] In one or more embodiments, the capping layer CPL may have a refractive index of about 1.6 or more. For example, the capping layer CPL may have a refractive index of about 1.6 or more with respect to light in a wavelength range of about 550 nanometers (nm) to about 660 nm.

[0226] Figures 8 to 11 Each of them is a cross-sectional view of a display device according to one or more embodiments of the present disclosure. Figures 8 to 11 In the display device of the embodiment of the present invention, no further description is given. Figures 1 to 7 Instead of repeating features already described in , their differences will be described in more detail.

[0227] See also Figure 8 According to one or more embodiments, the display device DD-a may include: a display panel DP including a display element layer DP-ED, a light control layer CCL and a color filter layer CFL arranged on the display panel DP. Figure 8In one or more embodiments explained in the accompanying drawings, the display panel DP may include a base layer BS, a circuit layer DP-CL and a display element layer DP-ED provided on the base layer BS, and the display element layer DP-ED may include a light emitting element ED.

[0228] The light emitting element ED may include a first electrode EL1, a hole transport region HTR disposed on the first electrode EL1, a light emitting layer EML disposed on the hole transport region HTR, an electron transport region ETR disposed on the light emitting layer EML, and a second electrode EL2 disposed on the electron transport region ETR. Figures 3 to 7 The structure of the light emitting element can also be applied to Figure 8 The structure of the light-emitting element ED explained in FIG.

[0229] Figure 8 The light-emitting element ED explained in the embodiment may include an amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR. Accordingly, the light-emitting element ED may exhibit high luminous efficiency and long life properties. In one or more embodiments, the light-emitting element ED of one or more embodiments may exhibit high luminous efficiency and improved life properties in the blue light-emitting region. The light-emitting element ED according to one or more embodiments includes an amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR, and therefore, exhibits high luminous efficiency and long life properties, and accordingly, the display device DD-a of one or more embodiments may exhibit excellent or appropriate display quality.

[0230] See also Figure 8 , the light-emitting layer EML may be arranged in the opening OH defined by the pixel defining layer PDL. For example, the light-emitting layer EML divided by the pixel defining layer PDL and provided corresponding to each light-emitting area PXA-R, PXA-G, and PXA-B may emit light in substantially the same wavelength range. In the display device DD-a of one or more embodiments, the light-emitting layer EML may emit blue light. In one or more embodiments, unlike the configuration illustrated in the drawings, in one or more embodiments, the light-emitting layer EML may be provided as a common layer in the entire light-emitting areas PXA-R, PXA-G, and PXA-B.

[0231] The light control layer CCL may be arranged on the display panel DP. Although the light control layer CCL is shown as being arranged above the display element layer DP-ED, the embodiment is not limited thereto, and the light control layer CCL may be arranged below the display element layer DP-ED. The light control layer CCL may include a light converter. The light converter may be a quantum dot and / or a phosphor, etc. The light converter may emit the provided light by converting the wavelength of the provided light. For example, the light control layer CCL may include a layer containing quantum dots or a layer containing phosphors.

[0232] The light-control layer CCL may include a plurality of light-control parts CCP1, CCP2, and CCP3. The light-control parts CCP1, CCP2, and CCP3 may be spaced apart and / or separated from each other.

[0233] See also Figure 8 , the divided patterns BMP may be disposed between the light control parts CCP1 , CCP2 , and CCP3 that are spaced apart and / or separated from each other, but embodiments of the present disclosure are not limited thereto. Figure 8 It is illustrated that the divided pattern BMP does not overlap with the light control parts CCP1 , CCP2 , and CCP3 , however, at least a portion of the edges of the light control parts CCP1 , CCP2 , and CCP3 may overlap with the divided pattern BMP.

[0234] The light control layer CCL may include a first light control component CCP1 containing a first quantum dot QD1 (which converts the first color light provided from the light emitting element ED into a second color light), a second light control component CCP2 containing a second quantum dot QD2 (which converts the first color light into a third color light), and a third light control component CCP3 (which transmits the first color light).

[0235] In one or more embodiments, the first light control component CCP1 may provide red light as the second color light, and the second light control component CCP2 may provide green light as the third color light. The third light control component CCP3 may provide blue light by transmitting blue light as the first color light provided from the light emitting element ED. For example, the first quantum dot QD1 may be a red quantum dot, and the second quantum dot QD2 may be a green quantum dot. The same contents described herein may apply to quantum dots QD1 and QD2.

[0236] In one or more embodiments, the light control layer CCL may further include a scatterer SP. The first light control component CCP1 may include a first quantum dot QD1 and a scatterer SP, the second light control component CCP2 may include a second quantum dot QD2 and a scatterer SP, and the third light control component CCP3 may not include (e.g., may exclude) any quantum dot, but include a scatterer SP.

[0237] The scatterer SP may be inorganic particles. For example, the scatterer SP may include TiO 2 、ZnO、Al 2 O 3 、SiO 2 and hollow spherical silica. The scatterer SP may include TiO 2 、ZnO、Al 2 O 3 、SiO 2and hollow spherical silica, or may be selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2 and a mixture of at least two of the materials selected from hollow spherical silica.

[0238] The first light control component CCP1, the second light control component CCP2, and the third light control component CCP3 may each include base resins BR1, BR2, and BR3, in which quantum dots QD1 and QD2 and scatterers SP are dispersed. In one or more embodiments, the first light control component CCP1 may include first quantum dots QD1 and scatterers SP dispersed in the first base resin BR1, the second light control component CCP2 may include second quantum dots QD2 and scatterers SP dispersed in the second base resin BR2, and the third light control component CCP3 may include scatterers SP dispersed in the third base resin BR3.

[0239] The base resins BR1, BR2 and BR3 are media in which quantum dots QD1 and QD2 and scatterers SP are dispersed, and may be formed of one or more suitable resin compositions, which may be generally referred to as adhesives. For example, the base resins BR1, BR2 and BR3 may be acrylic resins, urethane resins, silicone resins and / or epoxy resins, etc. The base resins BR1, BR2 and BR3 may be transparent resins. In one or more embodiments, the first base resin BR1, the second base resin BR2 and the third base resin BR3 may be the same or different from each other.

[0240] The light control layer CCL may include an isolation layer BFL1. The isolation layer BFL1 may be used to prevent or reduce the penetration of moisture and / or oxygen (hereinafter, referred to as "moisture / oxygen"). The isolation layer BFL1 may block or reduce the exposure of the light control components CCP1, CCP2, and CCP3 to moisture / oxygen. In one or more embodiments, the isolation layer BFL1 may cover the light control components CCP1, CCP2, and CCP3. In one or more embodiments, the isolation layer BFL2 may be provided between the light control components CCP1, CCP2, and CCP3 and the filters CF1, CF2, and CF3.

[0241] The isolation layers BFL1 and BFL2 may include at least one inorganic layer. For example, the isolation layers BFL1 and BFL2 may include an inorganic material. For example, the isolation layers BFL1 and BFL2 may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride and / or a metal film that ensures light transmittance, etc. In one or more embodiments, the isolation layers BFL1 and BFL2 may further include an organic film. The isolation layers BFL1 and BFL2 may be formed of a single layer or a plurality of layers.

[0242] In the display device DD-a of one or more embodiments, the color filter layer CFL may be disposed on the light control layer CCL. For example, the color filter layer CFL may be directly disposed on the light control layer CCL. In this case, the isolation layer BFL2 may not be provided.

[0243] The color filter layer CFL may include filters CF1, CF2, and CF3. The color filter layer CFL may include a first filter CF1 configured to transmit a second color light, a second filter CF2 configured to transmit a third color light, and a third filter CF3 configured to transmit the first color light. For example, the first filter CF1 may be a red filter, the second filter CF2 may be a green filter, and the third filter CF3 may be a blue filter. The filters CF1, CF2, and CF3 may each include a polymerized photosensitive resin and a pigment or dye. The first filter CF1 may include a red pigment or dye, the second filter CF2 may include a green pigment or dye, and the third filter CF3 may include a blue pigment or dye.

[0244] In one or more embodiments, the embodiments of the present disclosure are not limited thereto, and the third filter CF3 may not include (e.g., may exclude) a pigment or a dye. The third filter CF3 may include a polymerized photosensitive resin and may not include (e.g., may exclude) a pigment or a dye. The third filter CF3 may be transparent. The third filter CF3 may be formed of a transparent photosensitive resin.

[0245] In addition, in one or more embodiments, the first filter CF1 and the second filter CF2 may be yellow filters. The first filter CF1 and the second filter CF2 may not be separated but provided as one filter.

[0246] In one or more embodiments, the color filter layer CFL may further include a light shielding member. The light shielding member may be a black matrix. The light shielding member may include an organic light shielding material or an inorganic light shielding material containing a black pigment or dye. The light shielding member may prevent or reduce light leakage and may separate adjacent filters CF1, CF2, and CF3. Also, in one or more embodiments, the light shielding member may be formed of a blue filter.

[0247] The first to third filters CF1, CF2, and CF3 may be arranged to correspond to the red light emitting area PXA-R, the green light emitting area PXA-G, and the blue light emitting area PXA-B, respectively.

[0248] The base substrate BL may be arranged on the color filter layer CFL. The base substrate BL may be a member providing a base surface on which the color filter layer CFL and / or the light control layer CCL, etc. are arranged. The base substrate BL may be a glass substrate, a metal substrate, and / or a plastic substrate, etc. However, the embodiments of the present disclosure are not limited thereto, and the base substrate BL may be an inorganic layer, an organic layer, or a composite material layer. In one or more embodiments, unlike the configuration illustrated in the drawings, in one or more embodiments, the base substrate BL may not be provided.

[0249] Fig. 9 A cross-sectional view for explaining a portion of a display device according to one or more embodiments. In the display devices DD-TD according to one or more embodiments, the light emitting element ED-BT may include a plurality of light emitting structures OL-B1, OL-B2, and OL-B3.

[0250] At least one of the plurality of light emitting structures OL-B1, OL-B2, and OL-B3 may include the amine compound of one or more embodiments represented by Formula 1. Accordingly, the light emitting element ED-BT may exhibit high light emitting efficiency and long life properties.

[0251] The light emitting element ED-BT may include a first electrode EL1 and a second electrode EL2 facing each other, and a plurality of light emitting structures OL-B1, OL-B2, and OL-B3 sequentially stacked in a thickness direction between the first electrode EL1 and the second electrode EL2. Each of the light emitting structures OL-B1, OL-B2, and OL-B3 may include a light emitting layer EML ( Figure 8 ) and a light emitting layer EML ( Figure 8 ) of the hole transport region HTR( Figure 8 ) and the electron transport region ETR ( Figure 8 ). For example, the light emitting elements ED-BT included in the display devices DD-TD of one or more embodiments may be light emitting elements having a tandem structure and including a plurality of light emitting layers.

[0252] exist Fig. 9In one or more embodiments explained in, all light beams emitted from the light emitting structures OL-B1, OL-B2, and OL-B3, respectively, may be blue light. However, the embodiments of the present disclosure are not limited thereto, and the light beams emitted from the light emitting structures OL-B1, OL-B2, and OL-B3, respectively, may have wavelength ranges different from each other. For example, the light emitting element ED-BT including a plurality of light emitting structures OL-B1, OL-B2, and OL-B3 emitting light beams having wavelength ranges different from each other may emit white light.

[0253] The charge generation layer CGL may be disposed between two of the adjacent light emitting structures OL-B1, OL-B2, and OL-B3, respectively. The charge generation layer CGL may include a p-type or p-like charge generation layer (eg, a p-charge generation layer) and / or an n-type or n-like charge generation layer (eg, an n-charge generation layer).

[0254] exist Fig. 9 In the embodiment illustrated in FIG. 1 , at least one of the light emitting structures OL-B1, OL-B2 and OL-B3 may be located in the hole transport region HTR (see FIG. 1 ). Figure 8 ) includes one or more amine compounds of the embodiments represented by Formula 1. Accordingly, at least one of the light emitting structures OL-B1, OL-B2, and OL-B3 may exhibit high light emitting efficiency and long life properties.

[0255] See also Fig.10 , the display device DD-b according to one or more embodiments may include light-emitting elements ED-1, ED-2, and ED-3 in which two light-emitting layers are stacked. At least one of the light-emitting elements ED-1, ED-2, and ED-3 may include an amine compound of one or more embodiments represented by Formula 1. Accordingly, the light-emitting elements ED-1, ED-2, and ED-3 may exhibit high luminous efficiency and long life properties. In one or more embodiments, the light-emitting element ED-3 of one or more embodiments may exhibit high luminous efficiency and improved life properties in a blue light-emitting region.

[0256] and Figure 2 Compared to the display device DD of one or more embodiments described in Fig.10 The one or more embodiments explained in are different in that each of the first to third light-emitting elements ED-1, ED-2, and ED-3 includes two light-emitting layers stacked in the thickness direction. In each of the first to third light-emitting elements ED-1, ED-2, and ED-3, the two light-emitting layers may emit light in substantially the same wavelength range.

[0257] The first light-emitting element ED-1 may include a first red light-emitting layer EML-R1 and a second red light-emitting layer EML-R2. The second light-emitting element ED-2 may include a first green light-emitting layer EML-G1 and a second green light-emitting layer EML-G2. In one or more embodiments, the third light-emitting element ED-3 may include a first blue light-emitting layer EML-B1 and a second blue light-emitting layer EML-B2. The emission auxiliary component OG may be arranged between the first red light-emitting layer EML-R1 and the second red light-emitting layer EML-R2, between the first green light-emitting layer EML-G1 and the second green light-emitting layer EML-G2, and between the first blue light-emitting layer EML-B1 and the second blue light-emitting layer EML-B2.

[0258] The emission auxiliary component OG may include a single layer or a plurality of layers. The emission auxiliary component OG may include a charge generation layer. More specifically, the emission auxiliary component OG may include an electron transport region (not shown), a charge generation layer (not shown), and a hole transport region (not shown) stacked in sequence. The emission auxiliary component OG may be provided as a common layer in the entire first to third light-emitting elements ED-1, ED-2, and ED-3. However, the embodiments of the present disclosure are not limited thereto, and the emission auxiliary component OG may be provided by being patterned in an opening OH defined by a pixel defining layer PDL.

[0259] The first red light emitting layer EML-R1, the first green light emitting layer EML-G1, and the first blue light emitting layer EML-B1 may be disposed between the electron transport region ETR and the emission auxiliary component OG. The second red light emitting layer EML-R2, the second green light emitting layer EML-G2, and the second blue light emitting layer EML-B2 may be disposed between the emission auxiliary component OG and the hole transport region HTR.

[0260] For example, the first light-emitting element ED-1 may include a first electrode EL1, a hole transport region HTR, a second red light-emitting layer EML-R2, an emission auxiliary component OG, a first red light-emitting layer EML-R1, an electron transport region ETR, and a second electrode EL2 stacked in sequence. The second light-emitting element ED-2 may include a first electrode EL1, a hole transport region HTR, a second green light-emitting layer EML-G2, an emission auxiliary component OG, a first green light-emitting layer EML-G1, an electron transport region ETR, and a second electrode EL2 stacked in sequence. The third light-emitting element ED-3 may include a first electrode EL1, a hole transport region HTR, a second blue light-emitting layer EML-B2, an emission auxiliary component OG, a first blue light-emitting layer EML-B1, an electron transport region ETR, and a second electrode EL2 stacked in sequence.

[0261] The light-emitting elements ED-1, ED-2, and ED-3 according to one or more embodiments include the amine compound of one or more embodiments represented by Formula 1 in the hole transport region HTR, and exhibit high luminous efficiency and long life properties, and accordingly, the display device DD-b of one or more embodiments can exhibit excellent or appropriate display quality.

[0262] In one or more embodiments, the optical auxiliary layer PL may be arranged on the display element layer DP-ED. The optical auxiliary layer PL may include a polarizing layer. The optical auxiliary layer PL may be arranged on the display panel DP and control light reflected at the display panel DP due to external light. Unlike the configuration illustrated in the drawings, the optical auxiliary layer PL in the display device according to one or more embodiments may not be provided.

[0263] and Fig. 9 and Fig.10 different, Fig.11 The display device DD-c is illustrated as including four light emitting structures OL-B1, OL-B2, OL-B3 and OL-C1. The light emitting element ED-CT may include a first electrode EL1 and a second electrode EL2 facing each other, and first to fourth light emitting structures OL-B1, OL-B2, OL-B3 and OL-C1 sequentially stacked in a thickness direction between the first electrode EL1 and the second electrode EL2.

[0264] At least one of the first to fourth light emitting structures OL-B1, OL-B2, OL-B3, and OL-C1 may include the amine compound of one or more embodiments represented by Formula 1. Accordingly, the light emitting element ED-CT may exhibit high luminous efficiency and long life properties. In one or more embodiments, the display device DD-c of one or more embodiments may exhibit excellent or appropriate display quality.

[0265] The light emitting structures OL-C1, OL-B1, OL-B2, and OL-B3 are stacked in sequence, and the charge generation layer CGL1 is disposed between the light emitting structures OL-B1 and OL-C1, the charge generation layer CGL2 is disposed between the light emitting structures OL-B1 and OL-B2, and the charge generation layer CGL3 is disposed between the light emitting structures OL-B2 and OL-B3. Among the four light emitting structures, the first to third light emitting structures OL-B1, OL-B2, and OL-B3 may emit blue light, and the fourth light emitting structure OL-C1 may emit green light. However, the embodiments of the present disclosure are not limited thereto, and the first to fourth light emitting structures OL-B1, OL-B2, OL-B3, and OL-C1 may emit light beams within different wavelength ranges. The charge generation layers CGL1, CGL2 and CGL3 arranged between adjacent light emitting structures OL-B1, OL-B2, OL-B3 and OL-C1 may include p-type or p-type charge generation layers (e.g., p charge generation layers) and / or n-type or n-type charge generation layers (e.g., n charge generation layers).

[0266] In one or more embodiments, the electronic device may include: a display device including a plurality of light emitting elements and a control component for controlling the display device. The electronic device of one or more embodiments may be a device activated according to an electrical signal. The electronic device may include a display device of one or more appropriate embodiments. For example, the electronic device may include not only large-sized electronic devices such as televisions, monitors, or outdoor billboards, but also small-sized and medium-sized electronic devices such as personal computers, laptop computers, personal digital terminals, display devices for vehicles, game consoles, portable electronic devices, or cameras.

[0267] Fig.12 1 is a view for explaining a vehicle AM ​​in which first to fourth display devices DD-1, DD-2, DD-3 and DD-4 are arranged. Figure 1 , Figure 2 and Figures 8 to 11 According to the description of one or more embodiments, at least one of the first to fourth display devices DD-1, DD-2, DD-3 and DD-4 may include display devices DD, DD-TD, DD-a, DD-b and DD-c of the same structure.

[0268] Fig.12The vehicle AM ​​is explained, but this is only an example, and the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may be arranged in other transportation means such as bicycles, motorcycles, trains, ships, and airplanes. In one or more embodiments, at least one of the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 including the same configuration as the display devices DD, DD-TD, DD-a, DD-b, and DD-c of one or more embodiments may be used in a personal computer, a laptop computer, a personal digital terminal, a game console, a portable electronic device, a television, a monitor, and / or an outdoor billboard, etc. In one or more embodiments, these are provided only as embodiments and may be used in other electronic devices unless departing from the present disclosure.

[0269] At least one selected from the first to fourth display devices DD-1, DD-2, DD-3 and DD-4 may include reference Figures 3 to 7 The light-emitting element ED described. At least one of the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may include the amine compound of one or more embodiments represented by Formula 1. Accordingly, the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 including the amine compound of one or more embodiments may have improved display efficiency and display life. In one or more embodiments, the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 including the amine compound of one or more embodiments may exhibit excellent or appropriate display quality.

[0270] See also Fig.12 , the vehicle AM ​​may include a steering wheel HA and a gearshift GR for driving the vehicle AM. In one or more embodiments, the vehicle AM ​​may include a front window GL arranged so as to face the driver.

[0271] The first display device DD-1 may be arranged in a first area overlapping the steering wheel HA. For example, the first display device DD-1 may be a digital instrument cluster displaying first information of the vehicle AM. The first information may include a first scale indicating the driving speed of the vehicle AM, a second scale indicating the engine speed (i.e., revolutions per minute (RPM)), and / or an image indicating the fuel status, etc. The first scale and the second scale may be indicated as digital images.

[0272] The second display device DD-2 may be arranged in a second zone facing the driver's seat and overlapping with the front window GL. The driver's seat may be a seat in which the steering wheel HA is arranged. For example, the second display device DD-2 may be a head-up display (HUD) that displays the second information of the vehicle AM. The second display device DD-2 may be optically transparent. The second information may include a number indicating the driving speed, and may further include information such as the current time. Different from the configuration illustrated in the accompanying drawings, the second information of the second display device DD-2 may be projected onto the front window GL to be displayed.

[0273] The third display device DD-3 may be arranged in a third zone adjacent to the gear GR. For example, the third display device DD-3 may be arranged between the driver's seat and the passenger seat and may be a central information display (CID) of the vehicle AM ​​for displaying the third information. The passenger seat may be a seat spaced and / or separated from the driver's seat, and the gear GR is arranged between the passenger seat and the driver's seat. The third information may include information about traffic (e.g., navigation information), information about playing music or radio or video (or images), and / or information about the temperature inside the vehicle AM, etc.

[0274] The fourth display device DD-4 may be spaced and / or separated from the steering wheel HA and the gearshift GR, and may be arranged in a fourth area adjacent to the side of the vehicle AM. For example, the fourth display device DD-4 may be a digital side mirror that displays the fourth information. The fourth display device DD-4 may display an image outside the vehicle AM ​​captured by a camera module CM arranged outside the vehicle AM. The fourth information may include an image outside the vehicle AM.

[0275] The first to fourth information described herein may be examples, and the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may further display information about the inside and outside of the vehicle AM. The first to fourth information may include different information. However, the embodiments of the present disclosure are not limited thereto, and a portion of the first to fourth information may include the same information as each other.

[0276] Terms such as "substantially," "about," and "approximately" are used as relative terms and not as terms of degree, and are intended to take into account the inherent deviations in measurements or calculations that one of ordinary skill in the art will recognize. They may include deviations from the stated value and an acceptable range determined by one of ordinary skill in the art, taking into account the limitations and errors associated with the measurement of that quantity. For example, "about" may refer to one or more standard deviations of the stated value, or ±30%, ±20%, ±10%, or ±5% of the stated value.

[0277] Numerical ranges disclosed herein include and are intended to disclose all subranges of the same numerical precision. For example, a range of "1.0 to 10.0" includes all subranges having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Applicants therefore reserve the right to amend this specification (including the claims) to expressly set forth any subranges contained within the ranges expressly set forth herein.

[0278] The light-emitting device, light-emitting element and / or any other related device or component according to the embodiments of the present disclosure described herein may be implemented using any appropriate hardware, firmware (e.g., a dedicated integrated circuit), software, or a combination of software, firmware, and hardware. For example, the various components of the light-emitting device and / or the light-emitting element may be formed on an integrated circuit (IC) chip or on a separate IC chip. Further, the various components of the light-emitting device and / or the light-emitting element may be implemented on a flexible printed circuit film, a tape carrier package (TCP), or a printed circuit board (PCB), or formed on a substrate. Further, the various components of the display device and / or the light-emitting element may be processes or threads running on one or more processors in one or more computing devices, executing computer program instructions and interacting with other system components for performing the various functions described herein. The computer program instructions are stored in a memory, which may be implemented in a computing device using a standard storage device, such as, for example, a random access memory (RAM). The computer program instructions may also be stored in other non-temporary computer-readable media, such as, for example, a CD-ROM or a flash drive, etc. Furthermore, those skilled in the art will recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or the functionality of a dedicated computing device may be distributed across one or more other computing devices without departing from the scope of the embodiments of the present disclosure.

[0279] In the present disclosure, when the particles are spherical, "diameter" indicates the average particle diameter, and when the particles are non-spherical, "diameter" indicates the length of the major axis. The diameter (or size) of the particles can be measured by particle size analysis, dynamic light scattering, scanning electron microscopy and / or transmission electron microscopy photography. When the size of the particles is measured using a particle size analyzer, the average particle diameter (or size) can be referred to as D50. The term "D50" as used herein refers to the average diameter (or size) of the particles whose cumulative volume corresponds to 50% by volume in a particle size distribution (e.g., cumulative distribution), and refers to the value of the particle size corresponding to 50% from the smallest particle when the total number of particles is 100% in a distribution curve accumulated in the order from the smallest particle size to the largest particle size. Particle size analysis can be performed using a HORIBA LA-950 laser particle size analyzer.

[0280] Hereinafter, referring to Examples and Comparative Examples, the amine compound according to one or more embodiments of the present disclosure represented by Formula 1 and the light-emitting element according to one or more embodiments will be described in more detail. In one or more embodiments, the examples shown are only for illustrative purposes to facilitate understanding of the present disclosure, and therefore, the scope of the present disclosure is not limited thereto. Example 1. Synthesis of amine compound according to embodiment

[0281] The method for synthesizing the amine compound according to the present embodiment will be described in more detail with reference to the method for synthesizing Compound 5, Compound 8, Compound 11, Compound 49, Compound 68, Compound 82, Compound 88, Compound 90, Compound 100, Compound 112, Compound 130, Compound 154, Compound 166, Compound 169, Compound 177, and Compound 178. In one or more embodiments, the method for synthesizing the amine compound described is only an example, and the method for synthesizing the amine compound according to one or more embodiments of the present disclosure is not limited to the following examples. (1) Synthesis of Compound 5

[0282] The amine compound 5 according to one or more embodiments may be synthesized through the steps (eg, tasks or actions) of Reaction Formula 1, for example. Reaction 1

[0283] Under argon (Ar) atmosphere, [1,1':2',1"-terphenyl]-4'-amine (30.0 g), 3-bromophenanthrene (31.4 g), bis(dibenzylideneacetone)palladium(0) (Pd(dba) 2 , 0.7 g) and sodium tert-butoxide (NaOtBu, 14.1 g) were added to a 1 L three-necked flask and dissolved in toluene (400 mL), and then tri-tert-butylphosphine (P(tBu) 3 , 2.0 M in toluene, 2.0 mL), and the mixture was stirred at room temperature for 4 hours. Thereafter, water was added thereto, and CH 2 Cl 2 Extraction was performed to collect the organic layer, which was then washed with MgSO 4 It was dried, and then the solvent was removed by distillation under reduced pressure. The obtained crude product was purified by silica gel column chromatography to obtain 34.1 g (yield 66%) of intermediate compound A. The molecular weight of intermediate compound A measured by FAB-MS measurement was 421.

[0284] Under argon (Ar) atmosphere, intermediate compound A (5.0 g), 1-(4-bromophenyl)naphthalene (3.4 g), Pd(dba) 2(0.35 g) and NaOtBu (1.7 g) were added to a 300 mL three-necked flask and dissolved in toluene (100 mL), to which P(tBu) was then added. 3 (2.0 M in toluene, 0.6 mL), and the mixture was heated at 100° C. and stirred for 4 hours. Thereafter, water was added thereto, and CH 2 Cl 2 Extraction was performed to collect the organic layer, which was then washed with MgSO 4 It was dried, and then the solvent was removed by distillation under reduced pressure. The obtained crude product was purified by silica gel column chromatography to obtain 5.9 g (yield 80%) of Compound 5. The molecular weight of Compound 5 measured by FAB-MS measurement was 623. (2) Synthesis of Compound 8

[0285] The amine compound 8 according to one or more embodiments may be synthesized through the steps of Reaction Formula 2, for example. Reaction 2

[0286] In substantially the same manner as the synthesis of Compound 5 described herein, 6.2 g (yield 85%) of Compound 8 was obtained from Intermediate Compound A (5.0 g) and 2-(4-bromophenyl)naphthalene (3.4 g). The molecular weight of Compound 8 measured by FAB-MS measurement was 623. (3) Synthesis of Compound 11

[0287] The amine compound 11 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 3, for example. Reaction 3

[0288] In substantially the same manner as the synthesis of compound 5 described herein, 6.0 g (yield 79%) of compound 11 was obtained from intermediate compound A (5.0 g) and 4-bromo-1,1′:4′,1″-terphenyl (3.7 g). The molecular weight of compound 11 measured by FAB-MS measurement was 649. (4) Synthesis of Compound 49

[0289] The amine compound 49 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 4, for example. Reaction 4

[0290] In substantially the same manner as the synthesis of compound 5 described herein, 6.2 g (yield 75%) of compound 49 was obtained from intermediate compound A (5.0 g) and 1-(4'-chloro-[1,1'-biphenyl]-4-yl)naphthalene (3.7 g). The molecular weight of compound 49 measured by FAB-MS measurement was 699. (5) Synthesis of Compound 68

[0291] The amine compound 68 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 5, for example. Reaction 5

[0292] In substantially the same manner as the synthesis of compound 5 described herein, 6.8 g (yield 82%) of compound 68 was obtained from intermediate compound A (5.0 g) and 7-(4-chlorophenyl)-1-phenylnaphthalene (3.7 g). The molecular weight of compound 68 measured by FAB-MS measurement was 699. (6) Synthesis of Compound 82

[0293] The amine compound 82 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 6, for example. Reaction 6

[0294] In substantially the same manner as the synthesis of compound 5 described herein, 5.7 g (yield 73%) of compound 82 was obtained from intermediate compound A (5.0 g) and 2-bromo-9-phenyl-9H-carbazole (3.8 g). The molecular weight of compound 82 measured by FAB-MS measurement was 662. (7) Synthesis of Compound 88

[0295] The amine compound 88 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 7, for example. Reaction 7

[0296] In substantially the same manner as the synthesis of compound 5 described herein, 5.5 g (yield 73%) of compound 88 was obtained from intermediate compound A (5.0 g) and 10-bromonaphtho[1,2-b]benzofuran (3.5 g). The molecular weight of compound 88 measured by FAB-MS measurement was 637. (8) Synthesis of Compound 90

[0297] The amine compound 90 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 8, for example. Reaction 8

[0298] In substantially the same manner as the synthesis of Compound 5 described herein, 5.7 g (yield 76%) of Compound 90 was obtained from Intermediate Compound A (5.0 g) and 9-bromonaphtho[2,1-b]benzofuran (3.5 g). The molecular weight of Compound 90 measured by FAB-MS measurement was 637. (9) Synthesis of Compound 100

[0299] The amine compound 100 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 9, for example. Reaction 9

[0300] In substantially the same manner as the synthesis of compound 5 described herein, 6.2 g (yield 80%) of compound 100 was obtained from intermediate compound A (5.0 g) and 10-bromobenzo[b]naphtho[2,1-d]thiophene (3.7 g). The molecular weight of compound 100 measured by FAB-MS measurement was 653. (10) Synthesis of Compound 112

[0301] The amine compound 112 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 10, for example. Reaction 10

[0302] In substantially the same manner as the synthesis of compound 5 described herein, 6.6 g (yield 84%) of compound 112 was obtained from intermediate compound A (5.0 g) and 4-(4-bromophenyl)dibenzo[b,d]furan (3.8 g). The molecular weight of compound 112 measured by FAB-MS measurement was 663. (11) Synthesis of Compound 130

[0303] The amine compound 130 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 11, for example. Reaction 11

[0304] In substantially the same manner as the synthesis of compound 5 described herein, 5.4 g (yield 69%) of compound 130 was obtained from intermediate compound A (5.0 g) and 3-bromo-1-phenyldibenzo[b,d]furan (3.8 g). The molecular weight of compound 130 measured by FAB-MS measurement was 663. (12) Synthesis of Compound 154

[0305] The amine compound 154 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 12, for example. Reaction 12

[0306] In substantially the same manner as the synthesis of compound 5 described herein, 6.2 g (yield 65%) of compound 154 was obtained from intermediate compound A (5.0 g) and 2-(4-chlorophenyl)-9,9-diphenyl-9H-fluorene (5.1 g). The molecular weight of compound 154 measured by FAB-MS measurement was 814. (13) Synthesis of Compound 166

[0307] The amine compound 166 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 13, for example. Reaction 13

[0308] Under an argon (Ar) atmosphere, 6-bromo-[1,1'-biphenyl]-3-amine (10.0 g), naphthalene-1-ylboronic acid (6.9 g), tetrakis(triphenylphosphine)palladium(0) (Pd(PPh 3 ) 4 , 2.3 g) and potassium carbonate (K 2 CO 3 , 11.1 g) was added to a 500 mL three-necked flask and dissolved in a mixed solvent of toluene, water and ethanol (toluene: water: ethanol = 10:2:1, 200 mL), and then heated and stirred at 80° C. for 8 hours. Thereafter, water was added thereto, and CH 2 Cl 2 Extraction was performed to collect the organic layer, which was then washed with MgSO 4 It was dried, and then the solvent was removed by distillation under reduced pressure. The obtained crude product was purified by silica gel column chromatography to obtain 7.0 g (yield 59%) of intermediate compound B. The molecular weight of intermediate compound B measured by FAB-MS measurement was 295.

[0309] In substantially the same manner as the synthesis of Intermediate Compound A described herein, 5.2 g (yield 65%) of Intermediate Compound C was obtained from Intermediate Compound B (5.0 g) and 3-bromophenanthrene (4.3 g). The molecular weight of Intermediate Compound C measured by FAB-MS measurement was 471.

[0310] In substantially the same manner as the synthesis of Compound 5 described herein, 5.0 g (yield 70%) of Compound 166 was obtained from Intermediate Compound C (5.0 g) and 2-(4-bromophenyl)naphthalene (3.0 g). The molecular weight of Compound 166 measured by FAB-MS measurement was 673. (14) Synthesis of Compound 169

[0311] The amine compound 169 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 14, for example. Reaction 14

[0312] In substantially the same manner as the synthesis of intermediate compound B described herein, 7.9 g (yield 61%) of intermediate compound D was obtained from 6-bromo-[1,1'-biphenyl]-3-amine (10.0 g) and [1,1'-biphenyl]-4-ylboronic acid (8.0 g). The molecular weight of intermediate compound D measured by FAB-MS measurement was 321.

[0313] In substantially the same manner as the synthesis of Intermediate Compound A described herein, 5.4 g (yield 70%) of Intermediate Compound E was obtained from Intermediate Compound D (5.0 g) and 3-bromophenanthrene (4.0 g). The molecular weight of Intermediate Compound E measured by FAB-MS measurement was 497.

[0314] In substantially the same manner as the synthesis of Compound 5 described herein, 4.9 g (yield 70%) of Compound 169 was obtained from Intermediate Compound E (5.0 g) and 1-(4-bromophenyl)naphthalene (2.8 g). The molecular weight of Compound 169 measured by FAB-MS measurement was 699. (15) Synthesis of Compound 177

[0315] The amine compound 177 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 15, for example. Reaction 15

[0316] In substantially the same manner as the synthesis of intermediate compound B described herein, 8.8 g (yield 74%) of intermediate compound F was obtained from 6-bromo-[1,1'-biphenyl]-3-amine (10.0 g) and naphthalene-2-ylboronic acid (6.9 g). The molecular weight of intermediate compound F measured by FAB-MS measurement was 295.

[0317] In substantially the same manner as the synthesis of Intermediate Compound A described herein, 5.4 g (yield 68%) of Intermediate Compound G was obtained from Intermediate Compound F (5.0 g) and 3-bromophenanthrene (4.3 g). The molecular weight of Intermediate Compound G measured by FAB-MS measurement was 471.

[0318] In substantially the same manner as the synthesis of Compound 5 described herein, 4.7 g (yield 66%) of Compound 177 was obtained from Intermediate Compound G (5.0 g) and 1-(4-bromophenyl)naphthalene (3.0 g). The molecular weight of Compound 177 measured by FAB-MS measurement was 673. (16) Synthesis of Compound 178

[0319] The amine compound 178 according to one or more embodiments may be synthesized through the steps of Reaction Scheme 16, for example. Reaction 16

[0320] In substantially the same manner as the synthesis of intermediate compound B described herein, 7.3 g (yield 53%) of intermediate compound H was obtained from 6-bromo-[1,1′-biphenyl]-3-amine (10.0 g) and phenanthren-3-ylboronic acid (8.9 g). The molecular weight of intermediate compound H measured by FAB-MS measurement was 345.

[0321] In substantially the same manner as the synthesis of Intermediate Compound A described herein, 5.0 g (yield 67%) of Intermediate Compound I was obtained from Intermediate Compound H (5.0 g) and 3-bromophenanthrene (3.7 g). The molecular weight of Intermediate Compound I measured by FAB-MS measurement was 521.

[0322] In substantially the same manner as the synthesis of compound 5 described herein, 4.9 g (yield 71%) of compound 178 was obtained from intermediate compound I (5.0 g) and 1-(4-bromophenyl)naphthalene (2.7 g). The molecular weight of compound 178 measured by FAB-MS measurement was 723. 2. Manufacturing and evaluation of light-emitting components (1) Manufacturing of light-emitting elements

[0323] A light-emitting element including the amine compound of one or more embodiments or the comparative example compound in the hole transport layer was manufactured in the following manner. The light-emitting elements of Examples 1 to 16 were manufactured using the amine compound of one or more embodiments as the hole transport layer material, respectively. The light-emitting elements of Comparative Examples 1 to 20 were manufactured using Comparative Example Compounds X-1 to X-20 as the hole transport layer material, respectively. The Example compounds used in Examples 1 to 16 and the Comparative Example compounds used in Comparative Examples 1 to 20 are as follows. Example compounds Comparative Example Compounds

[0324] As the first electrode, isopropanol and pure water were used to ultrasonically clean 150 nanometers (nm) of glass substrates patterned with indium tin oxide (ITO) for 5 minutes. After ultrasonic cleaning, UV irradiation was performed for 30 minutes, and ozone treatment was performed. Thereafter, 2-TNATA was deposited with a thickness of 60nm to form (or provide) a hole injection layer. Example compounds or comparative example compounds were deposited on the hole injection layer with a thickness of 30nm to form (or provide) a hole transport layer.

[0325] TBP and ADN were co-deposited on the hole transport layer at a thickness of 25 nm to form (or provide) a light-emitting layer. TBP and ADN were co-deposited at a weight ratio of 3:97. Thereafter, Alq 3 and LiF are sequentially deposited with a thickness of 25 nm and 1 nm, respectively, to form (or provide) an electron transport region.

[0326] Next, Al was deposited to a thickness of 100 nm to form (or provide) a second electrode.

[0327] In an embodiment, a hole injection layer, a hole transport region, a light emitting layer, an electron transport region, and a second electrode are formed using a vacuum deposition apparatus.

[0328] The compounds used for producing the light-emitting element are as follows. Materials used to make light-emitting components (2) Evaluation of light-emitting elements

[0329] Evaluation of the light emitting elements of the examples and comparative examples is shown in Table 1. Relative luminous efficiency and relative element life of the light emitting elements of the examples and comparative examples are shown in Table 1. The luminous efficiency and element life (LT50) were evaluated using C9920-11 luminance directional characteristic measuring equipment from Hamamatsu Photonics.

[0330] At 10 mA / cm 2 ) at a current density of 100 %, the luminous efficiency is relatively expressed using the luminous efficiency of Comparative Example 1 as 100%, i.e., the relative luminous efficiency (%). The device life (LT50) is relatively expressed by using the numerical value of the time of Comparative Example 1 as 100%, i.e., the relative device life (%), where the device life (LT50) is the time taken for the initial brightness to deteriorate by 50% during substantially continuous driving. Table 1

[0331] Referring to the results of Table 1, Examples 1 to 16 show high luminous efficiency and long life properties compared to Comparative Examples 1 to 20. The Example compounds include a phenanthryl group directly bonded to a nitrogen atom at a specific bonding position, and a 3,4-substituted phenyl group directly bonded to a nitrogen atom or bonded to a nitrogen atom through a linker at a specific bonding position, and can exhibit excellent or appropriate charge transport properties and material stability compared to other Comparative Example compounds depending on such specified substituents and specified substitution positions.

[0332] For example, due to the molecular structure characteristics of the example compounds (different from those of the comparative example compounds), the example compounds have excellent or appropriate charge transport and charge balance. For example, it can be confirmed that the light-emitting element of the example including the amine compound of one or more embodiments in the hole transport layer exhibits high luminous efficiency and long life properties.

[0333] The amine compound of one or more embodiments includes both phenanthryl and 3,4-substituted phenyl (for example, including phenanthryl and 3,4-substituted phenyl at the same time), and has a structure in which phenanthryl and 3,4-substituted phenyl are bonded to the nitrogen atom of the amine compound at a specific position. Accordingly, the amine compound of one or more embodiments can show excellent or appropriate material stability and high charge transport. The light-emitting element of one or more embodiments including the amine compound of one or more embodiments in the hole transport zone can show excellent or appropriate luminous efficiency and long life properties. In one or more embodiments, by including the amine compound of one or more embodiments in the hole transport zone, the light-emitting element of one or more embodiments emitting blue light can show relatively high luminous efficiency and relatively long life properties.

[0334] The light-emitting element of one or more embodiments includes the amine compound of one or more embodiments in a hole transport region, and therefore, can exhibit relatively high light emission efficiency and relatively long life properties.

[0335] The amine compound of one or more embodiments can be used as a material for achieving improved properties (high light emission efficiency and long lifetime) of a light-emitting element (for example, by providing a light-emitting element having relatively high light emission efficiency and relatively long lifetime).

[0336] The display device of one or more embodiments may exhibit excellent or appropriate display quality.

[0337] Although the present disclosure has been described with reference to embodiments thereof, it will be understood by those skilled in the art that one or more suitable modifications and changes in form and details may be made without departing from the spirit and scope of the present disclosure as set forth in the claims and their equivalents.

[0338] Accordingly, the technical scope of the present disclosure is not intended to be limited to the contents set forth in the detailed description of the specification, but is intended to be defined by the claims and their equivalents.

Claims

1. An amine compound represented by Formula 1: Formula 1 In formula 1, R1 to R7 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, n is an integer selected from 1 to 3, R a is a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and / or forms a ring by bonding with an adjacent group, L1 and L2 are each independently a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms, Ar1 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and when L1 is directly linked, Ar1 is not a substituted or unsubstituted fluorenyl group, Ar2 and Ar3 are each independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group or a substituted or unsubstituted phenanthryl group, wherein each of Ar2 and Ar3 does not include a substituted or unsubstituted carbazolyl group as a substituent, and Each of Ar1, Ar2 and Ar3 does not include substituted or unsubstituted triphenylene.

2. The amine compound according to claim 1, wherein the amine compound is represented by Formula 1A: Formula 1A In Formula 1A, m and p are each independently an integer selected from 1 to 5, R b and R c Each is independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and / or forms a ring by bonding with an adjacent group, and Ar1, L1, L2, R1 to R7, R a and n are as defined in Equation 1.

3. The amine compound according to claim 1, wherein the amine compound is represented by Formula 1-1 or Formula 1-2: Formula 1-1 Formula 1-2 In formula 1-2, L 2a is a substituted or unsubstituted phenylene group or a substituted or unsubstituted divalent biphenyl group, and In Formula 1-1 and Formula 1-2, Ar1, Ar2, Ar3, L1, R1 to R7, R a and n are as defined in Equation 1.

4. The amine compound according to claim 1, wherein Ar1 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted dibenzoheterocyclopentadienyl group including O, S, N or Si as a ring-forming heteroatom, or a substituted or unsubstituted benzonaphthocyclopentadienyl group including O or S as a ring-forming heteroatom. The amine compound according to claim 1 , wherein in Formula 1, at least one hydrogen atom is substituted with a deuterium atom.

6. The amine compound according to claim 1, wherein in Formula 1, R1 to R7, R a Each of Ar1, Ar2, Ar3, L1 and L2 does not include a substituted or unsubstituted amine group.

7. The amine compound according to claim 1, wherein the amine compound is represented by any one of the compounds selected from Compound Group 1: Compound Group 1 In compound group 1, D is a deuterium atom.

8. A light emitting element, comprising: a first electrode; a second electrode on the first electrode; a light emitting layer between the first electrode and the second electrode; as well as A hole transport zone between the first electrode and the light emitting layer and including the amine compound according to any one of claims 1 to 7.

9. The light-emitting element according to claim 8, wherein the hole transport region comprises at least one of a hole injection layer, a hole transport layer, an electron blocking layer and a light-emitting auxiliary layer, and wherein at least one of the hole injection layer, the hole transport layer, the electron blocking layer and the light-emitting auxiliary layer comprises the amine compound. 10 . The light-emitting element according to claim 8 , wherein the hole transport region comprises a hole injection layer on the first electrode and a hole transport layer on the hole injection layer, and wherein the hole transport layer comprises the amine compound.

11. The light-emitting element according to claim 8, wherein the light-emitting layer comprises a compound represented by Formula E-1: Formula E-1 In formula E-1, c and d are each independently an integer selected from 0 to 5, and R 31 To R 40 Each of the groups may independently be a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, and / or may form a ring by bonding with an adjacent group. 12 . The light-emitting element according to claim 8 , wherein the light-emitting layer is configured to emit blue light.

13. A display device, comprising: basal layer; a circuit layer on the base layer; as well as A display element layer is on the circuit layer and includes the light emitting element according to any one of claims 8 to 12. The display device according to claim 13 , wherein the light emitting element is configured to emit blue light.

15. The display device according to claim 13, further comprising a light control layer comprising quantum dots.

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