Light-emitting element, display device, and condensed polycyclic compound for same

Abstract

Provided are a light-emitting element, a display device, and a fused polycyclic compound. The light-emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes a fused polycyclic compound that may be a dopant material (e.g., a thermally activated delayed fluorescent dopant). The emission layer may further include second to fourth compounds. The fused polycyclic compound has a pentacyclic core comprising three aromatic rings fused by one boron atom and two nitrogen atoms. At least one substituent on the pentacyclic core is an electron-donating tricyclic fused ring and attached at a para-position with respect to boron. Due to spatial requirements, the molecular shape of the fused polycyclic compound becomes twisted, which results in a difference between singlet and triplet states as well as modulation of the reverse intersystem crossing rate of the fused polycyclic compound.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0095394 filed in the Korean Intellectual Property Office on July 21, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure herein relates to a light emitting element, a display device, and a condensed polycyclic compound used for the light emitting element. Background Art

[0003] Recently, organic electroluminescent display devices and the like have been actively developed and / or pursued as image display devices. An organic electroluminescent display device is different from a liquid crystal display device and is a so-called "self-luminous" type or kind of display device. For example, holes and electrons injected from a first electrode and a second electrode, respectively, recombine in a luminescent material within an emission layer (e.g., a light-emitting layer). Subsequently, the luminescent material of the emission layer emits light to complete (e.g., realize a display (e.g., display of an image)).

[0004] Implementing an organic electroluminescent element as a display device requires (or desires or requires) an organic electroluminescent element having low driving voltage, high luminous efficiency and / or long life, etc. Therefore, there is a need or expectation for the development of materials for an organic electroluminescent element capable of stably obtaining such characteristics or expectations.

[0005] For example, in recent years, in order to provide or realize an organic electroluminescent element with high efficiency and long life, the development of phosphorescent emission using triplet energy and / or fluorescent emission using triplet-triplet annihilation (TTA) (e.g., where singlet excitons are generated by collision of triplet excitons) has been conducted and / or pursued. Another technology being developed is thermally activated delayed fluorescence (TADF) materials (e.g., using the delayed fluorescence phenomenon). Summary of the invention

[0006] One or more aspects of the embodiments of the present disclosure relate to a light emitting element having improved luminous efficiency and / or element lifespan.

[0007] One or more aspects of an embodiment of the present disclosure are directed to a display device having improved light emitting efficiency and / or element lifespan.

[0008] One or more aspects of the embodiments of the present disclosure relate to fused polycyclic compounds capable of improving luminous efficiency and / or component life. Additional aspects will be described in part in the following description, and in part will be apparent from the description, or can be learned by practicing the disclosed given embodiments.

[0009] One or more embodiments of the present disclosure provide a light-emitting element including a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes (eg, contains) a first compound represented by Formula 1.

[0010] Formula 1

[0011]

[0012] In Formula 1, b and d may each independently be an integer from 0 to 4, a, c, f, i and k may each independently be an integer from 0 to 3, e, g, h and j may each independently be an integer from 0 to 5, Q 1 To Q 3 and Q 51 To Q 56 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring, Q 4 may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted silyl group, 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 may optionally be bonded to an adjacent group to form a ring, Q 6 may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, a substituted or unsubstituted germyl group, or a substituted or unsubstituted silyl group, and Y 1 and Y 2 Each 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 cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and may optionally bind to an adjacent group to form a ring.

[0013] In one or more embodiments, the first compound represented by Formula 1 may be represented by Formula 1-1.

[0014] Formula 1-1

[0015]

[0016] In Formula 1-1, l and d1 may each independently be an integer from 0 to 3, m may be an integer from 0 to 4, Q 11 and Q 201 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, Y 3 and Y 4 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, optionally bonded to an adjacent group to form a ring, and Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 , a to c, and e to k may all be independently as defined in Formula 1.

[0017] In one or more embodiments, the first compound represented by Formula 1 may be represented by at least one selected from Formula 2-1 to Formula 2-10.

[0018] Formula 2-1

[0019]

[0020] Formula 2-2

[0021]

[0022] Formula 2-3

[0023]

[0024] Formula 2-4

[0025]

[0026] Formula 2-5

[0027]

[0028] Formula 2-6

[0029]

[0030] Formula 2-7

[0031]

[0032] Formula 2-8

[0033]

[0034] Formula 2-9

[0035]

[0036] Formula 2-10

[0037]

[0038] In Formula 2-1 to Formula 2-10, a101, a102 and a116 may each independently be an integer from 0 to 5, a103, a104, a105, a108, a110, a111 and a112 may each independently be an integer from 0 to 4, a106 may be an integer from 0 to 3, a109, a114, a117, a118 and a119 may each independently be an integer from 0 to 2, a107 and a113 may each independently be 0 or 1, Q 101 To Q 112 and Q 116 To Q 119 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, Q 113 To Q 115may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring, X 1 , X 4 and X 5 can be independently an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, X 2 can be a nitrogen atom, X 3 can be a carbon atom, a silicon atom or a germanium atom, and Q 1 To Q 4 , Q 51 To Q 56 , Q 6 and a to k may each independently be as defined in Formula 1.

[0039] In one or more embodiments, the first compound represented by Formula 1 may be represented by Formula 3.

[0040] Formula 3

[0041]

[0042] In formula 3, Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 , a, and c to k may all be independently as defined in Formula 1.

[0043] Q 2 It can be represented by any one selected from Formula 3-1 to Formula 3-5.

[0044] Formula 3-1

[0045]

[0046] Formula 3-2

[0047]

[0048] Formula 3-3

[0049]

[0050] Formula 3-4

[0051]

[0052] Formula 3-5

[0053]

[0054] In Formula 3-1, D is a deuterium atom. In Formulas 3-3 to 3-5, Q 21 To Q 25 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, a 21 to a 23 may each independently be an integer from 0 to 5, and a 24 and a 25 may each independently be an integer of 0 to 4, and in Formula 3-1 to Formula 3-5, -* is a position connected to Formula 3.

[0055] In one or more embodiments, the first compound represented by Formula 1 may be represented by Formula 4 or Formula 5.

[0056] Formula 4

[0057]

[0058] Formula 5

[0059]

[0060] In equations 4 and 5, Q 41 and Q 42 and Y may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and Y 1 , Y 2 , Q 1 To Q 3 , Q 51 To Q 56 , Q 6 , a to c, and e to k may all be independently as defined in Formula 1.

[0061] Q 41 It can be expressed by Formula 4-1 or Formula 4-2.

[0062] Formula 4-1

[0063]

[0064] Formula 4-2

[0065]

[0066] In Formula 4-1 and Formula 4-2, a411 and a412 may each independently be an integer from 0 to 4, a413 may be an integer from 0 to 5, and Q 411 , Q 412 and Q 413 They may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, and -* is the position connected to Formula 4.

[0067] Q 42 It can be expressed by Formula 4-3 or Formula 4-4.

[0068] Formula 4-3

[0069]

[0070] Formula 4-4

[0071]

[0072] In Formula 4-3 and Formula 4-4, a424 can be an integer from 0 to 5, Q 421 To Q 423 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring, Q 424is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, and -* is a position connected to Formula 5.

[0073] In one or more embodiments, the first compound represented by Formula 1 may be represented by Formula 6.

[0074] Formula 6

[0075]

[0076] In formula 6, Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 and a to j may each independently be as defined in Formula 1.

[0077] Q 6 It can be expressed by any one selected from Formula 6-1 to Formula 6-6.

[0078] Formula 6-1

[0079]

[0080] Formula 6-2

[0081]

[0082] Formula 6-3

[0083]

[0084] Formula 6-4

[0085]

[0086] Formula 6-5

[0087]

[0088] Formula 6-6

[0089]

[0090] In equations 6-1 to 6-6, X 6 It can be a carbon atom, a silicon atom or a germanium atom, X7 can be an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, X 8 may be a nitrogen atom, a604 may be an integer from 0 to 5, a605 may be an integer from 0 to 3, a606 may be an integer from 0 to 4, a608 may be an integer from 0 to 9, a609 may be an integer from 0 to 11, Q 601 To Q 606 , Q 608 and Q 609 may each independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring, Q 607 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring, and -* is a position connected to Formula 6.

[0091] In one or more embodiments, the compound represented by Formula 1 may be represented by at least one selected from among the compounds in Compound Group 1.

[0092] Compound Group 1

[0093]

[0094]

[0095]

[0096]

[0097]

[0098]

[0099]

[0100] In one or more embodiments, the light emitting element may further include a hole transport region disposed between the first electrode and the emission layer and an electron transport region disposed between the emission layer and the second electrode.

[0101] In one or more embodiments, the emissive layer may emit delayed fluorescence.

[0102] In one or more embodiments, the emissive layer may emit light having an emission center wavelength of about 430 nanometers (nm) to about 490 nm.

[0103] In one or more embodiments, the emission layer may further include at least one selected from the second compound represented by Formula HT-1 and the third compound represented by Formula ET-1.

[0104] Formula HT-1

[0105]

[0106] In formula HT-1, A 1 To A 8 can be independently N or CR 51 , L 1 It may be a direct bond, 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, Y a Can be direct key, CR 52 R 53 or SiR 54 R 55 ,Ar 1 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, R 51 To R 55 They may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 (e.g., 6 to 30) ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 (e.g., 2 to 30) ring-forming carbon atoms, and may optionally bind to an adjacent group to form a ring.

[0107] Formula ET-1

[0108]

[0109] In formula ET-1, selected from X 1 To X 3 At least one of them may be N, and the rest (e.g., any remaining X 1 To X 3) can be CR 56 ,

[0110] R 56 It 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 60 (e.g., 6 to 30) ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, b1 to b3 may each independently be an integer of 0 to 10, L 2 To L 4 may be independently a direct bond, 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. When b1 to b3 are all integers of 2 or more, L 2 To L 4 may each 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, and Ar 2 To Ar 4 Each 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.

[0111] In one or more embodiments, the light-emitting element may further include a fourth compound represented by Formula D-1.

[0112] Formula D-1

[0113]

[0114] In formula D-1, Q 1 To Q 4 may be independently C or N, C1 to C4 may be independently substituted or unsubstituted hydrocarbon rings having 5 to 30 ring carbon atoms or substituted or unsubstituted heterocycles having 2 to 30 ring carbon atoms, L 11 To L 13 can be independently a direct bond, *-O-*, *-S-*, a substituted or unsubstituted divalent alkyl group having 1 to 20 carbon atoms, 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, b1 to b3 may all independently be 0 or 1, R 61 To R 66Each of d1 to d4 may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, and may optionally be bonded to an adjacent group to form a ring, and d1 to d4 may independently be an integer from 0 to 4.

[0115] In one or more embodiments of the present disclosure, a display device includes a substrate layer, a circuit layer disposed on the substrate layer, and a display element layer disposed on the circuit layer and including a light-emitting element. The light-emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer that may be disposed between the first electrode and the second electrode, and may include a first compound represented by Formula 1, and may also include at least one selected from a second compound represented by Formula HT-1, a third compound represented by Formula ET-1, and a fourth compound represented by Formula D-1.

[0116] In one or more embodiments, the light emitting element may further include a light control layer disposed on the display element layer, wherein the light control layer may include quantum dots.

[0117] In one or more embodiments of the present disclosure, the fused polycyclic compound is represented by Formula 1 as described elsewhere herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0118] 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 accompanying drawings illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings:

[0119] Figure 1 is a plan view of a display device according to one or more embodiments of the present disclosure;

[0120] Figure 2 is a cross-sectional view of a display device according to one or more embodiments of the present disclosure;

[0121] Figure 3 is a cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0122] Figure 4 is a cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0123] Figure 5is a cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0124] Figure 6 is a cross-sectional view schematically showing a light emitting element according to one or more embodiments of the present disclosure;

[0125] Figure 7 and Figure 8 are cross-sectional views of display devices according to one or more embodiments of the present disclosure;

[0126] Fig. 9 is a cross-sectional view showing a display device according to one or more embodiments of the present disclosure;

[0127] Fig.10 is a cross-sectional view showing a display device according to one or more embodiments of the present disclosure;

[0128] Fig.11 is a view showing a vehicle in which a display device according to one or more embodiments is provided;

[0129] Fig. 12A is the orbital distribution of the highest occupied molecular orbital (HOMO) of comparative example compound A;

[0130] Fig. 12B is the orbital distribution of the lowest unoccupied molecular orbital (LUMO) of comparative example compound A;

[0131] Fig.13A is the orbital distribution of HOMO of the fused polycyclic compound according to one or more embodiments of the present disclosure; and

[0132] Fig. 13B is the orbital distribution of LUMO of the fused polycyclic compound according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION

[0133] The present disclosure can be modified in one or more suitable ways and has many forms, and therefore specific embodiments will be illustrated in the 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 specific forms disclosed, but is intended to cover all modifications, equivalents and substitutes falling within the spirit and scope of the present disclosure.

[0134] When explaining each of the drawings, the same reference numerals are used to refer to the same elements. In the drawings, the size of each structure is exaggeratedly shown for clarity of the present disclosure.

[0135] It will be understood that, although the terms "first" and / or "second" etc. can be used herein to describe one or more suitable 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 exemplary embodiments of the present disclosure, the first component can be referred to as the second component, and similarly, the second component can be referred to as the first component. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "one (kind / person)" and "the (described)" are also intended to include plural forms. As used herein, the term "and / or" includes any combination and all combinations that can define related structures.

[0136] In the present disclosure, it will be understood that the terms "include", "comprises" and / or "has" and the like indicate the presence of the features, quantities, steps, operations, components, parts (parts) or combinations thereof disclosed in the specification, but do not exclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts (parts) or combinations thereof.

[0137] As used herein, the term "use" and variations thereof may be considered synonymous with the term "utilize" and variations thereof, respectively.

[0138] As used herein, expressions such as “at least one of,” “one of,” “selected from,” and “selected from” when preceding / preceding 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 to c” and “at least one of a, b, and c” may mean only a, only b, only c, both a and b (e.g., simultaneously), both a and c (e.g., simultaneously), both b and c (e.g., simultaneously), all of a, b, and c, or variations thereof.

[0139] In the present application, when a layer, film, region or plate is referred to as being "on" another layer, film, region or plate or "in the upper part of" another layer, film, region or plate, it may not only be "directly on" the other layer, film, region or plate, but also there may be an intervening layer, film, region or plate. In contrast, when a layer, film, region or plate is referred to as being "below" another layer, film, region or plate, "in the lower part of" another layer, film, region or plate, it may not only be directly below the other layer, film, region or plate, but also there may be an intervening layer, film, region or plate. In some embodiments, it will be understood that when a part (component) is referred to as being "on" another part (component), it may be disposed above the other part (component), or it may also be disposed below the other part (component). For ease of description, terms such as "below", "above..." and / or "on" are used herein to describe the relationship between one element and another (additional) element as shown in the accompanying drawings. The terms are relative concepts and are described based on the directions indicated in the drawings. It will be understood that the terms are relative concepts and are described based on the orientations depicted in the drawings. It will be understood that, in addition to the orientations depicted in the drawings, the spatially relative terms are intended to include different orientations of the device in use or operation. For example, if the device in the drawings is flipped, the element described as "under" other elements or features will then be positioned as "above" or "on" the other elements or features. Therefore, the term "under..." can be included in both the orientations of above and below. The device can be positioned otherwise (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0140] 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 (elements), and some of which exclude the elements (elements) and / or include alternative elements (elements). Similarly, alternative language such as "or" refers to "one or more embodiments of the present disclosure" that all include the corresponding listed items.

[0141] Unless otherwise defined, all terms used herein (including chemical terms, technical terms, and scientific terms) have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be 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 will not be interpreted in an idealized or overly formal sense, unless explicitly defined as such herein.

[0142] 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 semiconductor film.

[0143] As used herein, the phrase "on a plane" or "plan view" means viewing a target portion from the top, and the phrase "in section" means viewing a section formed by vertically cutting the target portion from the side.

[0144] In the present disclosure, "not including one or any 'component'", "excluding one or any 'component'" and / or "not containing 'component'" etc. means that the "component" is not added, selected or used as a component in the composition or structure, but due to other impurities and / or external factors, the "component" may still be included in an appropriate amount.

[0145] definition

[0146] In the specification, the term "substituted or unsubstituted" may refer to unsubstituted or substituted with at least one substituent selected from the group consisting of deuterium atoms, halogen atoms, cyano groups, nitro groups, amino (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 certain embodiments, each of the substituents exemplified above may be substituted or unsubstituted. For example, biphenyl groups may be interpreted as aryl groups or phenyl groups substituted with phenyl groups.

[0147] In the specification, the phrase "bonds 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 some embodiments, the ring formed by bonding to each other may be connected to another ring to form a spiro structure.

[0148] In the specification, the term "adjacent group" may refer to a substituent that replaces an atom directly connected to an atom substituted with a corresponding substituent, another substituent that replaces an atom substituted with a corresponding substituent, or a substituent that is spatially located closest to the corresponding substituent. 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 some embodiments, the two methyl groups in 4,5-dimethylphenanthrene may be interpreted as "adjacent groups" to each other.

[0149] In the specification, examples of the halogen atom may include a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.

[0150] In the specification, the alkyl group may be linear or branched. The carbon number of 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 the embodiments of the present disclosure are not limited thereto.

[0151] In the specification, cycloalkyl may refer to a cyclic alkyl. The carbon number 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.

[0152] In the specification, alkenyl refers to a hydrocarbon group including at least one carbon double bond in the middle or at the end of an alkyl group having 2 or more carbon atoms. The alkenyl group may be linear or branched. The number of carbon atoms in the alkenyl group is not particularly 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 styryl vinyl, etc., but embodiments of the present disclosure are not limited thereto.

[0153] In the specification, alkynyl refers to a hydrocarbon group including at least one carbon triple bond in the middle or at the end of an alkyl group having 2 or more carbon atoms. The alkynyl group may be straight chain or branched. Although the number of carbon atoms is not particularly limited, it is 2 to 30, 2 to 20 or 2 to 10. Specific examples of alkynyl groups may include ethynyl and / or propynyl, etc., but are not limited thereto.

[0154] 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.

[0155] In the specification, aryl refers to any functional group or substituent derived from an aromatic hydrocarbon ring. The aryl group may be a monocyclic aryl group or a polycyclic aryl group. The number of ring carbon atoms in the aryl group may be 6 to 30, 6 to 20, or 6 to 15. Examples of aryl groups may include phenyl, naphthyl, fluorenyl, anthracenyl, phenanthrenyl, biphenyl, terphenyl, quaterphenyl, pentaphenyl, hexaphenyl, benzo[9,10]phenanthrenyl, pyrenyl, benzofluoranthenyl, and / or Base, etc., but the embodiments of the present disclosure are not limited thereto.

[0156] In the specification, the fluorenyl group may be substituted, and two substituents may be combined with each other to form a spiro structure. Examples of substituted fluorenyl groups are as follows. However, embodiments of the present disclosure are not limited thereto.

[0157]

[0158] Heterocyclic groups herein refer 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. Heterocyclic groups include aliphatic heterocyclic groups and aromatic heterocyclic groups. Aromatic heterocyclic groups may be heteroaryl groups. Aliphatic heterocyclic rings and aromatic heterocyclic rings may be monocyclic or polycyclic.

[0159] In the specification, the heterocyclic group may contain at least one of B, O, N, P, Si, Se and S as a heteroatom. When 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.

[0160] In the specification, the aliphatic heterocyclic group may include at least one of B, O, N, P, Si, Se, and S as a heteroatom. The number of ring 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, but the embodiments of the present disclosure are not limited thereto.

[0161] In the specification, the heteroaryl group may contain at least one of B, O, N, P, Si, Se and S as a heteroatom. When 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.

[0162] In the specification, the description of the aryl group may be applied to the arylene group except that the arylene group is a divalent group. The description of the heteroaryl group may be applied to the heteroarylene group except that the heteroarylene group is a divalent group.

[0163] In the specification, silyl includes alkylsilyl and arylsilyl. Examples of silyl may include trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, vinyldimethylsilyl, propyldimethylsilyl, triphenylsilyl, diphenylsilyl and / or phenylsilyl, etc., but the embodiments of the present disclosure are not limited thereto.

[0164] As used herein, germyl includes alkylgermyl and arylgermyl. Examples of germyl include trimethylgermyl, triethylgermyl, tert-butyldimethylgermyl, vinyldimethylgermyl, propyldimethylgermyl, triphenylgermyl, diphenylgermyl and / or phenylgermyl etc. However, one or more embodiments of the present disclosure are not limited thereto.

[0165] In the specification, the number of ring-forming 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.

[0166]

[0167] 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.

[0168] In the specification, thio groups may include alkylthio groups and arylthio groups. A thio group may refer to a sulfur atom bonded to an alkyl group or an aryl group as defined herein. Examples of thio groups may include methylthio, ethylthio, propylthio, pentylthio, hexylthio, octylthio, dodecylthio, cyclopentylthio, cyclohexylthio, phenylthio, naphthylthio, but embodiments of the present disclosure are not limited thereto.

[0169] 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 a straight chain, a branched chain or a ring. The number of carbon atoms in the alkoxy group is not particularly limited, but may be, for example, 1 to 20 or 1 to 10. 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.

[0170] Boryl herein may refer to a boron atom bonded to an alkyl or aryl group as defined herein. Boryl includes alkyl boryl and aryl boryl. Examples of boryl may include dimethyl boryl, methyl boryl, tert-butyl methyl boryl, diphenyl boryl and / or phenyl boryl, etc., but embodiments of the present disclosure are not limited thereto.

[0171] In the specification, the number of carbon atoms in the amine group is not particularly limited, but can be 1 to 30. The amine group may include an alkylamine group and an arylamine group. Examples of the amine group may include a methylamine group, a dimethylamine group, an aniline group, a diphenylamine group, a naphthylamine group and / or a 9-methyl-anthrylamine group, but the embodiments of the present disclosure are not limited thereto.

[0172] In the specification, an alkyl group selected from an alkoxy group, an alkylthio group, an alkylsulfinyl group, an alkylsulfonyl group, an alkylaryl group, an alkylamino group, an alkylboryl group, an alkylsilyl group, and an alkylamino group are the same as the examples of the alkyl group described herein.

[0173] In the specification, an aryl group selected from an aryloxy group, an arylthio group, an arylsulfinyl group, an arylsulfonyl group, an arylamino group, an arylboryl group, an arylsilyl group, and an arylamine group is the same as the examples of the aryl group described herein.

[0174] In the specification, a direct key may refer to a single key.

[0175] In some embodiments, in the specification, and "-*" indicate where to link.

[0176] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0177] Display device

[0178] Figure 1 is a plan view showing one or more embodiments of a display device DD. Figure 2 is a cross-sectional view of a display device DD according to the embodiment. Figure 2 It is shown along Figure 1 A cross-sectional view of the portion taken along line II'.

[0179] The display device DD may include a display panel DP and an optical layer PP disposed on the display panel DP on a third direction axis DR3. 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 disposed on the display panel DP to control light reflected in the display panel DP due to external light. The optical layer PP may include, for example, a polarizing layer or a color filter layer. In some embodiments, unlike the configuration shown in the drawings, the optical layer PP may not be disposed in the display device DD of one or more embodiments.

[0180] The base substrate BL may be disposed on the optical layer PP. The base substrate BL may be a member that provides a base surface on which the optical layer PP may be 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 some embodiments, unlike the illustrated configuration, in one or more embodiments, the base substrate BL may not be provided.

[0181] The display device DD according to one or more embodiments may further include a filling layer. The filling layer may be disposed between the display device 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 an acrylic resin, a siloxane resin, and an epoxy resin (e.g., at least one selected from acrylic resins, siloxane resins, and epoxy resins).

[0182] The display panel DP may include a base layer BS, and a circuit layer DP-CL and a display device layer DP-ED disposed on the base layer BS. The display device layer DP-ED may include a pixel defining film PDL, light emitting elements ED-1, ED-2, and ED-3 disposed between portions of the pixel defining film PDL, and an encapsulation layer TFE disposed on the light emitting elements ED-1, ED-2, and ED-3.

[0183] The base layer BS may be a member providing a base surface on which the display device layer DP-ED is disposed. 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.

[0184] In one or more embodiments, the circuit layer DP-CL is disposed 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 driving transistor and a switching transistor for driving the light emitting elements ED-1, ED-2, and ED-3 of the display device layer DP-ED.

[0185] Each of the light emitting elements ED-1, ED-2, and ED-3 may have a light emitting element having ... Figures 3 to 6 Each of the light emitting elements ED-1, ED-2 and ED-3 may include a first electrode EL1, a hole transport region HTR, a layer selected from emission layers EML-R, EML-G and EML-B, an electron transport region ETR and a second electrode EL2.

[0186] Figure 2 One or more embodiments are shown in which the emission layers EML-R, EML-G, and EML-B of the light-emitting elements ED-1, ED-2, and ED-3 are disposed in the opening OH defined in the pixel definition film PDL, and the hole transport region HTR, the electron transport region ETR, and the second electrode EL2 are disposed 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 Figure 2 Different from the configuration shown in , the hole transport region HTR and the electron transport region ETR in one or more embodiments can be set by being patterned inside the opening OH defined in the pixel definition film PDL. For example, the hole transport region HTR, the emission 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 can be set by being patterned by an inkjet printing method.

[0187] 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. The encapsulation layer TFE may be a thin film encapsulation layer. The encapsulation layer TFE may be formed by stacking 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.

[0188] The encapsulation-inorganic film protects the light-emitting elements ED-1, ED-2, and ED-3 from moisture and / or oxygen, and the encapsulation-organic film protects the light-emitting elements ED-1, ED-2, and ED-3 from foreign matter such as dust particles. The encapsulation-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 encapsulation-organic film may include acrylic compounds and / or epoxy compounds, etc. The encapsulation-organic film may include a photopolymerizable organic material, but the embodiments of the present disclosure are not particularly limited thereto.

[0189] The encapsulation layer TFE may be disposed on the second electrode EL2 , and may be disposed to fill the opening OH.

[0190] Reference Figure 1 and Figure 2 , the display device DD may include one or more non-light emitting regions NPXA and also include light emitting regions PXA-R, PXA-G, and PXA-B. The light emitting regions PXA-R, PXA-G, and PXA-B may be regions in which light generated by the corresponding light emitting elements ED-1, ED-2, and ED-3 is emitted. The light emitting regions PXA-R, PXA-G, and PXA-B may be spaced and / or separated from each other on a plane (e.g., in a plan view).

[0191] Each of the light-emitting regions PXA-R, PXA-G, and PXA-B may be a region divided (i.e., defined) by a pixel defining film PDL. The non-light-emitting region NPXA may be a region corresponding to the pixel defining film PDL between adjacent light-emitting regions PXA-R, PXA-G, and PXA-B. In some embodiments, in the specification, the light-emitting regions PXA-R, PXA-G, and PXA-B may correspond to pixels, respectively. The pixel defining film PDL may divide the light-emitting elements ED-1, ED-2, and ED-3. The emission layers EML-R, EML-G, and EML-B of the light-emitting elements ED-1, ED-2, and ED-3 may be disposed in an opening OH defined in the pixel defining film PDL and separated from each other.

[0192] The light emitting regions PXA-R, PXA-G, and PXA-B may be divided into a plurality of groups according to the colors of the lights 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 shown in , three light emitting regions PXA-R, PXA-G, and PXA-B that emit red light, green light, and blue light, respectively, are exemplarily shown. For example, the display device DD of one or more embodiments may include a red light emitting region PXA-R, a green light emitting region PXA-G, and a blue light emitting region PXA-B that are separated from each other.

[0193] 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.

[0194] 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 the wavelength range of the 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.

[0195] 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 regions PXA-R may be arranged along the second direction axis DR2, a plurality of green light emitting regions PXA-G may be arranged along the second direction axis DR2, and a plurality of blue light emitting regions PXA-B may be arranged along the second direction axis DR2. In some embodiments, the red light emitting regions PXA-R, the green light emitting regions PXA-G, and the blue light emitting regions PXA-B may be arranged alternately with each other in this order along the first direction axis DR1.

[0196] Figure 1 and Figure 2It is shown that all the light emitting regions PXA-R, PXA-G, and PXA-B have similar areas, 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 (e.g., in a plan view).

[0197] In some embodiments, the arrangement of the light emitting regions PXA-R, PXA-G, and PXA-B is not limited to Figure 1 , and according to the characteristics of the display quality required in the display device DD, the sequence in which the red light emitting area PXA-R, the green light emitting area PXA-G, and the blue light emitting area PXA-B are arranged can be provided in one or more suitable combinations. For example, the arrangement form of the light emitting areas PXA-R, PXA-G, and PXA-B can be pentile Layout or diamond )Layout( and Diamond is a registered trademark owned by Samsung Display Co., Ltd.).

[0198] In some 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.

[0199] In the following, Figures 3 to 6 is a cross-sectional view schematically showing a light emitting element ED according to an embodiment. The light emitting element ED of one or more embodiments may include a first electrode EL1, a hole transport region HTR, an emission layer EML, an electron transport region ETR, and a second electrode EL2 stacked in sequence (eg, sequentially stacked).

[0200] and Figure 3 compared to, Figure 4 1 shows a cross-sectional view of a light emitting element ED of one or more embodiments, 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 5A cross-sectional view of a light emitting element ED according to one or more embodiments is shown, 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 4 compared to, Figure 6 A cross-sectional view of a light emitting element ED according to one or more embodiments is shown, the light emitting element ED including a cover layer CPL disposed on the second electrode EL2.

[0201] 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 some 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 thereof, a mixture selected from two or more thereof, and / or an oxide thereof.

[0202] When 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). When the first electrode EL1 is a transflective electrode or a reflective electrode, the first electrode EL1 may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, a compound or mixture thereof (e.g., a mixture of Ag and Mg), or a material having a multilayer structure such as LiF / Ca (a stacking structure of LiF and Ca), LiF / Al (a stacking structure of LiF and Al). In some 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 some embodiments, the embodiments of the present disclosure are not limited thereto, and the first electrode EL1 may include the metal material described herein, a combination of at least two of the metal materials described herein, and / or an oxide of the 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

[0203] The hole transport region HTR is disposed on the first electrode EL1. The hole transport region HTR may include at least one of a hole injection layer HIL, a hole transport layer HTL, a buffer layer or an emission auxiliary layer, and an electron blocking layer EBL. The thickness of the hole transport region HTR may be, for example, about 100 Å. to about

[0204] 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-layered structure including a plurality of layers formed of a plurality of different materials.

[0205] 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 some embodiments, the hole transport region HTR may have a single layer structure formed of a plurality of different materials or a structure in which hole injection layer HIL / hole transport layer HTL, hole injection layer HIL / hole transport layer HTL / buffer layer, hole injection layer HIL / buffer layer, hole transport layer HTL / buffer layer, or hole injection layer HIL / hole transport layer HTL / electron blocking layer EBL are stacked in sequence from the first electrode EL1, but embodiments of the present disclosure are not limited thereto.

[0206] The hole transport region HTR may be formed using one or more suitable methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB), inkjet printing, laser printing, and / or laser induced thermal imaging (LITI).

[0207] The hole transport region HTR may include a compound represented by Formula H-1:

[0208] Formula H-1

[0209]

[0210] In formula H-1, L 1 and L 2 L and L may be independently a direct bond, 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. a and b may be independently an integer from 0 to 10. In some embodiments, when a or b is an integer of 2 or more, multiple L 1 and multiple L 2Each 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.

[0211] In formula H-1, Ar 1 and Ar 2 and Ar may be independently substituted or unsubstituted aryl groups having 6 to 30 ring carbon atoms or substituted or unsubstituted heteroaryl groups having 2 to 30 ring carbon atoms. 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.

[0212] The compound represented by formula H-1 may be a monoamine compound. In some embodiments, the compound represented by formula H-1 may be a compound selected from Ar 1 To Ar 3 In some embodiments, the compound represented by formula H-1 may be a diamine compound in which at least one of the diamine compounds includes an amine group as a substituent. 1 and Ar 2 A carbazole compound comprising a substituted or unsubstituted carbazole group in at least one of the following: 1 and Ar 2 A fluorene compound in which at least one of the compounds includes a substituted or unsubstituted fluorenyl group.

[0213] The compound represented by Formula H-1 may be represented by any one selected from the compounds in Compound Group H. However, the compounds listed in Compound Group H are examples, and the compound represented by Formula H-1 is not limited to the compounds represented by Compound Group H:

[0214] [Compound Group H]

[0215]

[0216]

[0217] The hole transport region HTR may include a phthalocyanine compound (such as 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-hexanitrile (HAT-CN), etc.

[0218] The hole transport region HTR may include at least one selected from carbazole derivatives (such as N-phenylcarbazole or polyvinylcarbazole), fluorene derivatives, triphenylamine derivatives (such as N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD) or 4,4',4"-tri(N-carbazolyl)triphenylamine (TCTA)), N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB), 4,4'-cyclohexylene-bis[N,N-bis(4-methylphenyl)aniline] (TAPC), 4,4'-bis[N,N'-(3-tolyl)amino]-3,3'-dimethylbiphenyl (HMTPD) and 1,3-bis(N-carbazolyl)benzene (mCP).

[0219] In some embodiments, the hole transport region HTR may 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.

[0220] The hole transport region HTR may include the compound of the hole transport region HTR described herein in at least one of the hole injection layer HIL, the hole transport layer HTL, and the electron blocking layer EBL.

[0221] 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 hole injection layer HIL may have, for example, about to about When the hole transport region HTR includes the hole transport layer HTL, the hole transport layer HTL may have a thickness of about to about For example, when the hole transport region HTR includes the electron blocking layer EBL, the electron blocking layer EBL may have a thickness of about 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 achieved without significantly increasing driving voltage.

[0222] In addition to the materials described herein, the hole transport region HTR may further include a charge generating material to increase conductivity. The charge generating material may be uniformly or non-uniformly dispersed in the hole transport region HTR. The charge generating material may be, for example, a p-dopant. The p-dopant may include at least one of a halogenated metal compound, a quinone derivative, a metal oxide, and a cyano compound, but the embodiments of the present disclosure are not limited thereto. For example, the p-dopant may include a halogenated metal compound (such as CuI or RbI), a quinone derivative (such as tetracyanoquinodimethane (TCNQ) or 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F 4 -TCNQ)), metal oxides (such as tungsten oxide or molybdenum oxide), cyano compounds (such as dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexanitrile (HAT-CN) and / or 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.

[0223] 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 buffer layer and an electron blocking layer EBL. The buffer layer may compensate for the resonance distance according to the wavelength of light emitted from the emission layer EML, and thus may increase the luminous efficiency. The material that may be included in the hole transport region HTR may be used as the material included in the buffer layer. The electron blocking layer EBL is a layer for preventing or reducing electron injection from the electron transport region ETR to the hole transport region HTR.

[0224] The emission layer EML is disposed on the hole transport region HTR. The emission layer EML may have, for example, about to about or about to about The emission 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.

[0225] The light emitting element ED according to one or more embodiments may include a fused polycyclic compound according to one or more embodiments in at least one functional layer provided between the first electrode EL1 and the second electrode EL2. In the light emitting element ED according to one or more embodiments, the emission layer EML may include a fused polycyclic compound according to one or more embodiments. In one or more embodiments, the emission layer EML may include a fused polycyclic compound according to one or more embodiments as a dopant material. The fused polycyclic compound according to one or more embodiments may be a dopant material of the emission layer EML. In some embodiments, as used herein, the fused polycyclic compound according to one or more embodiments described later may be referred to as a first compound.

[0226] Condensed polycyclic compounds

[0227] According to one or more embodiments of the fused polycyclic compound, a five-ring fused ring including two nitrogen (N) atoms and one boron (B) atom as ring-forming atoms is included as a core structure (hereinafter referred to as a NBN core). According to one or more embodiments of the NBN core, three substituted or unsubstituted benzene rings are included. In the NBN core of the fused polycyclic compound according to one or more embodiments, the substituent tricyclic fused ring is bound to a carbon atom at a para position relative to the boron atom forming the ring. For example, in one or more embodiments, the tricyclic fused ring substituent is bound to the core structure at a specific position, thereby increasing the torsion of the molecule in the fused polycyclic compound. Therefore, the energy difference between the singlet state and the triplet state is improved, resulting in an increase in the rate of reverse intersystem crossing (RISC), and therefore, the material stability can be improved.

[0228] In the fused polycyclic compound according to one or more embodiments, the tricyclic substituent capable of substituting the carbon atom at the para position relative to the boron atom of the NBN core may be an electron donating group. In the fused polycyclic compound according to one or more embodiments, the tricyclic substituent capable of substituting the carbon atom at the para position relative to the boron atom of the NBN core is a carbazole group.

[0229] The fused polycyclic compound according to one or more embodiments includes at least one carbazole group connected to a NBN core. The carbazole group connected to the NBN core is connected to a nitrogen-containing substituent.

[0230] In the fused polycyclic compound according to one or more embodiments, both nitrogen atoms of the NBN core are substituted by aryl groups. The aryl groups connected to the two nitrogen atoms of the NBN core can be substituted phenyl groups. For example, the aryl groups connected to the two nitrogen atoms of the NBN core can be terphenyl groups. The phenyl groups connected to the two nitrogen atoms of the NBN core can be substituted at the ortho position relative to the carbon atom connected to the nitrogen atom of the NBN core.

[0231] The fused polycyclic compound according to one or more embodiments is represented by Formula 1.

[0232] Formula 1

[0233]

[0234] In formula 1, Y 1 and Y 2 Each of them may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and may optionally be bonded to an adjacent group to form a ring. For example, Y 1 and Y 2 and Y may be independently substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted phenanthrenyl, substituted or unsubstituted phenoxy, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylseleno, substituted or unsubstituted phenyltelluryl, substituted or unsubstituted phenylsilyl, substituted or unsubstituted phenylgermyl, substituted or unsubstituted phenylamino, substituted or unsubstituted hydroxyethyl, substituted or unsubstituted propenyl, or substituted or unsubstituted furanyl. In some embodiments, Y 1 It can be a substituted or unsubstituted phenyl group, Y 2 may be a phenyl group substituted with an oxy group, and Y 1 and Y 2 Can bind to each other to form additional rings.

[0235] In formula 1, Q 1 To Q 3 and Q 51 To Q 56Each of Q and Q may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and may optionally be bonded to an adjacent group to form a ring. For example, Q 1 and Q 3 can be independently a hydrogen atom or a deuterium atom. 2 Q may be any one selected from a hydrogen atom, a deuterium atom, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted diphenylamine group, and a substituted or unsubstituted carbazole group. 51 To Q 56 Each of them may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted tert-butyl group, or a substituted or unsubstituted phenyl group.

[0236] In formula 1, Q 4 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted silyl group, 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 may optionally be bonded to an adjacent group to form a ring. For example, Q 4 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted silyl group.

[0237] In formula 1, Q 6 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, a substituted or unsubstituted germyl group, or a substituted or unsubstituted silyl group. For example, Q 6 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted methyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germyl group, a substituted or unsubstituted cyclopentenyl group, a substituted or unsubstituted cyclohexenyl group, a substituted or unsubstituted butyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothienyl group, a substituted or unsubstituted dibenzoselenophene group, a substituted or unsubstituted tellurophene group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted naphthyl group or a substituted or unsubstituted phenanthryl group.

[0238] In Formula 1, b and d may each independently be an integer of 0 to 4. In Formula 1, when b is 0, the fused polycyclic compound according to one or more embodiments may not be Q 2 Substitution. b is 4 and Q 2 The case where b is a hydrogen atom can be the same as the case where b is 0. When b is an integer of 2 or more, a plurality of Q 2 Can be the same, or selected from multiple Q 2 In Formula 1, when d is 0, the fused polycyclic compound according to one or more embodiments may not be Q 4 d is 4 and Q 4 The case where d is a hydrogen atom can be the same as the case where d is 0. When d is an integer of 2 or more, a plurality of Q 4 Can be the same, or selected from multiple Q 4 At least one of them may be different.

[0239] In Formula 1, a, c, f, i, and k may each independently be an integer of 0 to 3. In Formula 1, when a is 0, the fused polycyclic compound according to one or more embodiments may not be Q 1 substituted, and may be substituted only by nitrogen-containing substituents and hydrogen atoms. When a is an integer of 2 or greater, multiple Q 1 Can be the same, or selected from multiple Q 1 In Formula 1, when c is 0, the fused polycyclic compound according to one or more embodiments may not be Q 3 Substitution. c is 3 and Q 3 The case where c is a hydrogen atom can be the same as the case where c is 0. When c is an integer of 2 or more, a plurality of Q 3 can be independently the same, or selected from a plurality of Q 3 In Formula 1, when f is 0, the fused polycyclic compound according to one or more embodiments may not be Q 52 Substitution. f is 3 and Q 52 The case where f is a hydrogen atom can be the same as the case where f is 0. When f is an integer of 2 or more, a plurality of Q 52 Can be the same, or selected from multiple Q 52 In Formula 1, when i is 0, the fused polycyclic compound according to one or more embodiments may not be Q 55 Replace. i is 3 and Q 55 The case where i is a hydrogen atom can be the same as the case where i is 0. When i is an integer of 2 or more, a plurality of Q 55 Can be the same, or selected from multiple Q 55In Formula 1, when k is 0, the fused polycyclic compound according to one or more embodiments may not be Q 6 k is 3 and Q 6 The case where k is a hydrogen atom can be the same as the case where k is 0. When k is an integer of 2 or more, a plurality of Q 6 Can be the same, or selected from multiple Q 6 At least one of them may be different.

[0240] The first compound represented by Formula 1 may be represented by Formula 1-1.

[0241] Formula 1-1

[0242]

[0243] In formula 1-1, Y 3 and Y 4 Each of them may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and may optionally be bonded to an adjacent group to form a ring. For example, Y 3 and Y 4 Each of them may independently be a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted phenanthryl, a substituted or unsubstituted phenoxy, a substituted or unsubstituted phenylthio, a substituted or unsubstituted phenylseleno, a substituted or unsubstituted phenyltelluryl, a substituted or unsubstituted phenylsilyl, a substituted or unsubstituted phenylgermyl, a substituted or unsubstituted phenylamino, a substituted or unsubstituted hydroxyethyl, a substituted or unsubstituted propenyl or a substituted or unsubstituted furanyl.

[0244] In formula 1-1, Q 11 and Q 201 Each of Q and Q may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and may be optionally bonded to an adjacent group to form a ring. For example, Q 11 and Q 201 Each may independently be a hydrogen atom or a deuterium atom.

[0245] In Formula 1-1, l and d1 may each independently be an integer of 0 to 3. In Formula 1-1, when l is 0, the fused polycyclic compound according to one or more embodiments may not be Q 11 l is 3 and Q 11 The case where it is a hydrogen atom can be the same as the case where l is 0. When l is an integer of 2 or more, a plurality of Q 11 Can be the same, or selected from multiple Q 11 In Formula 1-1, when d1 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 4 Substitution. d1 is 3 and Q 4 The case where d1 is a hydrogen atom can be the same as the case where d1 is 0. When d1 is an integer of 2 or more, multiple Q 4 Can be the same, or multiple Q 4 At least one of them may be different.

[0246] In Formula 1-1, m may be an integer from 0 to 4. In Formula 1-1, when m is 0, the fused polycyclic compound according to one or more embodiments may not be Q 201 m is 4 and Q 201 The case where m is a hydrogen atom can be the same as the case where m is 0. When m is an integer of 2 or more, a plurality of Q 201 Can be the same, or selected from multiple Q 201 At least one of them may be different.

[0247] In Formula 1-1, the same description in Formula 1 can be applied to Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 , a to c and e to k.

[0248] The first compound represented by Formula 1 may be represented by any one selected from Formula 2-1 to Formula 2-10.

[0249] Formula 2-1

[0250]

[0251] Formula 2-2

[0252]

[0253] Formula 2-3

[0254]

[0255] Formula 2-4

[0256]

[0257] Formula 2-5

[0258]

[0259] Formula 2-6

[0260]

[0261] Formula 2-7

[0262]

[0263] Formula 2-8

[0264]

[0265] Formula 2-9

[0266]

[0267] Formula 2-10

[0268]

[0269] In the fused polycyclic compounds represented by Formula 2-1 to Formula 2-10, Q 101 To Q 112 and Q 116 To Q 119 Each of Q and Q may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and may be optionally bonded to an adjacent group to form a ring. For example, Q 101 It can be a hydrogen atom, a deuterium atom, a substituted or unsubstituted methyl group, or a substituted or unsubstituted tert-butyl group. 102 Q may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted methyl group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted diphenylamino group, or a substituted or unsubstituted vinyl group. 103 Q may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted tert-butyl group, or a substituted or unsubstituted carbazole group. 105 To Q 112 can be independently a hydrogen atom or a deuterium atom. 113 It can be a hydrogen atom, a deuterium atom or a substituted or unsubstituted phenyl group. 114Q may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted methyl group, or a substituted or unsubstituted phenyl group. 115 Q may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted hydroxyethyl group, or a substituted or unsubstituted propyl group. 116 It can be a hydrogen atom, a deuterium atom or a hydroxyl group. 117 To Q 119 Each may independently be a hydrogen atom or a deuterium atom.

[0270] In the fused polycyclic compounds represented by Formula 2-1 to Formula 2-10, Q 113 To Q 115 Each 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 alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring.

[0271] In the fused polycyclic compounds represented by Formula 2-1 to Formula 2-10, X 1 , X 4 and X 5 and X may each independently be an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom. 2 It can be a nitrogen atom. 3 It may be a carbon atom, a silicon atom or a germanium atom.

[0272] In the fused polycyclic compounds represented by Formula 2-1 to Formula 2-10, a101, a102 and a116 may each independently be an integer from 0 to 5, a103, a104, a105, a108, a110, a111 and a112 may each independently be an integer from 0 to 4, a106 may be an integer from 0 to 3, a109, a114, a117, a118 and a119 may each independently be an integer from 0 to 2, and a107 and a113 may each independently be 0 or 1.

[0273] For example, in Formula 2-1, when a101 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 101 a101 is 5 and Q 101 For hydrogen atoms, 101 The same as the case of 0. When a101 is an integer of 2 or greater, multiple Q 101 Can be the same, or selected from multiple Q 101In Formula 2-1, when a102 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 102 a102 is 5 and Q 102 The case where a102 is a hydrogen atom can be the same as the case where a102 is 0. When a102 is an integer of 2 or more, a plurality of Q 102 Can be the same, or selected from multiple Q 102 In Formula 2-2, when a103 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 103 a103 is 4 and Q 103 The case where a103 is a hydrogen atom can be the same as the case where a103 is 0. When a103 is an integer of 2 or more, a plurality of Q 103 Can be the same, or selected from multiple Q 103 In Formula 2-2, when a104 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 104 a104 is 4 and Q 104 The case where a104 is a hydrogen atom can be the same as the case where a104 is 0. When a104 is an integer of 2 or more, a plurality of Q 104 Can be the same, or selected from multiple Q 104 In Formula 2-3, when a105 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 105 a105 is 4 and Q 105 The case where a105 is a hydrogen atom can be the same as the case where a105 is 0. When a105 is an integer of 2 or more, multiple Q 105 Can be the same, or selected from multiple Q 105 In Formula 2-3, when a106 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 106 a106 is 3 and Q 106 The case where a106 is a hydrogen atom can be the same as the case where a106 is 0. When a106 is an integer of 2 or more, a plurality of Q 106 Can be the same, or selected from multiple Q 106 At least one of them may be different. The same description in Formula 2-1 may apply to a101. In Formula 2-4, when a107 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 107 a107 is 1 and Q 107The case where a108 is a hydrogen atom may be the same as the case where a107 is 0. In Formula 2-4, when a108 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 108 a108 is 4 and Q 108 The case where a108 is a hydrogen atom can be the same as the case where a108 is 0. When a108 is an integer of 2 or more, multiple Q 108 Can be independently the same, or multiple Q 108 At least one of may be different. The same description in Formula 2-1 may apply to a101. The same description in Formula 2-3 may apply to a105. In Formula 2-5, when a109 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 109 a109 is 2 and Q 109 The case where a109 is 0 can be the same as the case where a109 is 2. 109 Can be the same, or selected from multiple Q 109 In Formula 2-5, when a110 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 110 Replace. a110 is 4 and Q 110 The case where a110 is a hydrogen atom can be the same as the case where a110 is 0. When a110 is an integer of 2 or more, a plurality of Q 110 Can be the same, or selected from multiple Q 110 At least one of them may be different. The same description as in Formula 2-2 may be applied to a104. In Formula 2-6, when a111 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 111 a111 is 4 and Q 111 The case where a111 is a hydrogen atom can be the same as the case where a111 is 0. When a111 is an integer of 2 or more, a plurality of Q 111 Can be the same, or selected from multiple Q 111 In Formula 2-6, when a112 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 112 Substitution. a112 is 4 and Q 112 The case where a112 is a hydrogen atom can be the same as the case where a112 is 0. When a112 is an integer of 2 or more, multiple Q 112 Can be the same, or selected from multiple Q 112 In Formula 2-7, when a113 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 113 a113 is 1 and Q113 The case where a114 is a hydrogen atom may be the same as the case where a113 is 0. The same description as in Formula 2-6 may be applied to a111 and a112. In Formula 2-8, when a114 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 114 Substitution. a114 is 2 and Q 114 The case where a114 is 0 can be the same as the case where a114 is 0. When a114 is 2, multiple Q 114 Can be the same, or selected from multiple Q 114 At least one of them may be different. The same description as in Formula 2-6 may be applied to a111 and a112. In Formula 2-9, when a116 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 116 a116 is 5 and Q 116 The case where a116 is a hydrogen atom can be the same as the case where a116 is 0. When a116 is an integer of 2 or more, multiple Q 116 Can be the same, or selected from multiple Q 116 In Formula 2-10, when a117 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 117 Substitution. a117 is 2 and Q 117 The case where a117 is 0 can be the same as the case where a117 is 0. When a117 is 2, multiple Q 117 Can be the same, or selected from multiple Q 117 At least one of a118 and a119 may be different. When a118 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 118 Substitution. a118 is 2 and Q 118 The case where a118 is 0 can be the same as the case where a118 is 0. When a118 is 2, multiple Q 118 Can be the same, or selected from multiple Q 118 At least one of a119 and a119 may be different. When a119 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 119 Substitution. a119 is 2 and Q 119 The case where a119 is 0 can be the same as the case where a119 is 0. When a119 is 2, multiple Q 119 Can be the same, or selected from multiple Q 119 At least one of them may be different.

[0274] In Formula 2-1 to Formula 2-10, the same description as in Formula 1 can be applied to Q 1 To Q 4 , Q 51To Q 56 , Q 6 and a to k.

[0275] The first compound represented by Formula 1 may be represented by Formula 3.

[0276] Formula 3

[0277]

[0278] In Equation 3, the same description as in Equation 1 can be applied to Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 , a and c to k.

[0279] In the fused polycyclic compound represented by Formula 3, Q 2 It can be represented by any one selected from Formula 3-1 to Formula 3-5.

[0280] Formula 3-1

[0281]

[0282] Formula 3-2

[0283]

[0284] Formula 3-3

[0285]

[0286] Formula 3-4

[0287]

[0288] Formula 3-5

[0289]

[0290] In formula 3-1, D is a deuterium atom.

[0291] In equations 3-3 to 3-5, Q 21 To Q 25 Each of Q and Q may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring. For example, Q21 To Q 25 a21 to a23 may be integers from 0 to 5. a24 and a25 may each independently be an integer from 0 to 4.

[0292] In Formula 3-3, when a21 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 21 a21 is 5 and Q 21 The case where a21 is a hydrogen atom can be the same as the case where a21 is 0. When a21 is an integer of 2 or more, a plurality of Q 21 Can be the same, or selected from multiple Q 21 In Formula 3-4, when a22 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 22 a22 is 5 and Q 22 The case where a22 is a hydrogen atom can be the same as the case where a22 is 0. When a22 is an integer of 2 or more, a plurality of Q 22 Can be the same, or selected from multiple Q 22 At least one of a23 and a24 may be different. When a23 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 23 a23 is 5 and Q 23 The case where a23 is a hydrogen atom can be the same as the case where a23 is 0. When a23 is an integer of 2 or more, a plurality of Q 23 Can be the same, or selected from multiple Q 23 In Formula 3-5, when a24 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 24 Substitution. a24 is 4 and Q 24 The case where a24 is a hydrogen atom can be the same as the case where a24 is 0. When a24 is an integer of 2 or more, a plurality of Q 24 Can be the same, or selected from multiple Q 24 At least one of a25 and a26 may be different. When a25 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 25 Substitution. a25 is 4 and Q 25 The case where a25 is a hydrogen atom can be the same as the case where a25 is 0. When a25 is an integer of 2 or more, a plurality of Q 25 Can be the same, or selected from multiple Q 25 At least one of them may be different.

[0293] In Formula 3-1 to Formula 3-5, -* is a position connected to Formula 3.

[0294] The first compound represented by Formula 1 may be represented by Formula 4 or Formula 5.

[0295] Formula 4

[0296]

[0297] Formula 5

[0298]

[0299] In Formula 4 and / or Formula 5, Q 41 and Q 42 Each of them 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 alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group.

[0300] In Equation 4 and Equation 5, the same description as in Equation 1 can be applied to Y 1 , Y 2 , Q 1 To Q 3 , Q 51 To Q 56 , Q 6 , a to c and e to k.

[0301] In the fused polycyclic compound represented by Formula 4, Q 41 It can be expressed by Formula 4-1 or Formula 4-2.

[0302] Formula 4-1

[0303]

[0304] Formula 4-2

[0305]

[0306] In equations 4-1 and 4-2, Q 411 , Q 412 and Q 413 Each 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 alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring.

[0307] In Formula 4-1, a411 and a412 may each independently be an integer from 0 to 4, and in Formula 4-2, a413 is an integer from 0 to 5.

[0308] In Formula 4-1, when a411 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 411 a411 is 4 and Q 411 The case where a411 is a hydrogen atom can be the same as the case where a411 is 0. When a411 is an integer of 2 or more, multiple Q 411 Can be the same, or multiple Q 411 In Formula 4-1, when a412 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 412 Replace. a412 is 4 and Q 412 The case where a412 is a hydrogen atom can be the same as the case where a412 is 0. When a412 is an integer of 2 or more, multiple Q 412 Can be the same, or selected from multiple Q 412 In Formula 4-2, when a413 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 413 a413 is 5 and Q 413 The case where a413 is a hydrogen atom can be the same as the case where a413 is 0. When a413 is an integer of 2 or more, multiple Q 413 Can be the same, or selected from multiple Q 413 At least one of them may be different.

[0309] In Formula 4-1 and Formula 4-2, -* is the position connected to Formula 4.

[0310] In the fused polycyclic compound represented by Formula 5, Q 42 It can be expressed by Formula 4-3 or Formula 4-4.

[0311] Formula 4-3

[0312]

[0313] Formula 4-4

[0314]

[0315] In formula 4-3, Q 421 To Q 423Each 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 alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally be bonded to an adjacent group to form a ring.

[0316] In formula 4-4, Q 424 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and may optionally bond to an adjacent group to form a ring.

[0317] In Formula 4-4, a424 can be an integer from 0 to 5.

[0318] When a424 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 424 a424 is 5 and Q 424 The case where a424 is a hydrogen atom can be the same as the case where a424 is 0. When a424 is an integer of 2 or more, multiple Q 424 Can be the same, or selected from multiple Q 424 At least one of them may be different.

[0319] In Formula 4-3 and Formula 4-4, -* is the position connected to Formula 5.

[0320] The first compound represented by Formula 1 may be represented by Formula 6.

[0321] Formula 6

[0322]

[0323] In Equation 6, the same description as in Equation 1 can be applied to Y 1 , Y 2 , Q 1 To Q 4 , Q 51 To Q 56 , Q 6 and a to j.

[0324] In the fused polycyclic compound represented by Formula 6, Q 6 It can be expressed by any one selected from Formula 6-1 to Formula 6-6.

[0325] Formula 6-1

[0326]

[0327] Formula 6-2

[0328]

[0329] Formula 6-3

[0330]

[0331] Formula 6-4

[0332]

[0333] Formula 6-5

[0334]

[0335] Formula 6-6

[0336]

[0337] In equations 6-1 to 6-6, X 6 It can be a carbon atom, a silicon atom or a germanium atom, X 7 can be an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, and X 8 It may be a nitrogen atom.

[0338] In equations 6-1 to 6-6, Q 601 To Q 606 , Q 608 and Q 609 Each 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 alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and may optionally be bonded to an adjacent group to form a ring. Q 607 It may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 may optionally bond to an adjacent group to form a ring.

[0339] In Formula 6-2, a604 is an integer from 0 to 5. In Formula 6-3 and Formula 6-4, a605 is an integer from 0 to 3. In Formula 6-5, a608 is an integer from 0 to 9. In Formula 6-6, a609 is an integer from 0 to 11.

[0340] When a604 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 604 a604 is 5 and Q 604 The case where a604 is a hydrogen atom can be the same as the case where a604 is 0. When a604 is an integer of 2 or more, multiple Q 604 Can be the same, or selected from multiple Q 604 When a605 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 605 a605 is 3 and Q 605 The case where a605 is a hydrogen atom can be the same as the case where a605 is 0. When a605 is an integer of 2 or more, multiple Q 605 Can be the same, or selected from multiple Q 605 At least one of a606 and a607 may be different. a606 is an integer from 0 to 4. When a606 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 606 Replace. a606 is 4 and Q 606 The case where a606 is a hydrogen atom can be the same as the case where a606 is 0. When a606 is an integer of 2 or more, multiple Q 606 Can be the same, or selected from multiple Q 606 When a608 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 608 Replace. a608 is 9 and Q 608 The case where a608 is a hydrogen atom can be the same as the case where a608 is 0. When a608 is an integer of 2 or more, multiple Q 608 Can be the same, or selected from multiple Q 608 At least one of them may be different. When a608 is an integer of 2 or more, one a608 or two a608s may be bonded to one carbon atom. When a609 is 0, the fused polycyclic compound according to one or more embodiments may not be Q 609 a609 is 11 and Q 609 The case where a609 is a hydrogen atom can be the same as the case where a609 is 0. When a609 is an integer of 2 or more, multiple Q 609 Can be the same, or selected from multiple Q 609At least one of them may be different. When a609 is an integer of 2 or more, one a609 or two a609 may be bonded to one carbon atom.

[0341] In Formula 6-1 to Formula 6-6, -* is the position connected to Formula 6.

[0342] The condensed polycyclic compound according to one or more embodiments may be any one selected from the compounds (e.g., compounds) present in compound group 1. The light emitting element ED according to one or more embodiments may include at least one condensed polycyclic compound selected from the compounds (e.g., compounds) present in compound group 1 as the first compound in the emission layer EML.

[0343] Compound Group 1

[0344]

[0345]

[0346]

[0347]

[0348]

[0349]

[0350]

[0351]

[0352] In the specific example compounds set forth in Compound Group 1, "D" refers to a deuterium atom.

[0353] In the condensed polycyclic compound represented by Formula 1, according to one or more embodiments, a carbazole group connected to a nitrogen-containing substituent is used in a NBN core structure, and thus, improvement in high luminous efficiency and long lifespan may be achieved.

[0354] The fused polycyclic compound represented by Formula 1 according to one or more embodiments may be a phosphorescent light-emitting dopant material or a thermally activated delayed fluorescence (TADF) dopant material. In some embodiments, the fused polycyclic compound represented by Formula 1 may be a thermally activated delayed fluorescence dopant having a difference (ΔE ) of at most 0.2 eV between the lowest triplet excited state energy level (T1 energy level) and the lowest singlet excited state energy level (S1 energy level). ST ).

[0355] In the light emitting element ED according to one or more embodiments, the emission layer EML may emit phosphorescence or delayed fluorescence. For example, the emission layer EML may emit phosphorescence or thermally activated delayed fluorescence.

[0356] The fused polycyclic compound according to one or more embodiments may be included in the emission layer EML. The fused polycyclic compound according to one or more embodiments may be included in the emission layer EML as a dopant material. The fused polycyclic compound according to one or more embodiments may be used as a phosphorescent dopant material or a thermally activated delayed fluorescence dopant material. For example, in the light-emitting element ED according to one or more embodiments, the emission layer EML may include at least one selected from the fused polycyclic compounds (e.g., compounds) present in the aforementioned compound group 1 as a phosphorescent dopant material or a thermally activated delayed fluorescence dopant material. However, the application of the fused polycyclic compound according to one or more embodiments of the present disclosure is not limited thereto.

[0357] A light-emitting element ED including a fused polycyclic compound according to one or more embodiments represented by Formula 1 may include an emission layer EML having an emission center wavelength in a wavelength region of about 430 nanometers (nm) to about 490 nm. For example, the fused polycyclic compound according to one or more embodiments represented by Formula 1 may be a blue thermally activated delayed fluorescence dopant or a blue phosphorescent dopant. However, one or more embodiments of the present disclosure are not limited thereto. When the fused polycyclic compound according to one or more embodiments is used as a light-emitting dopant material, the first compound may be used as a dopant material (such as a red light-emitting dopant material and a green light-emitting dopant material) emitting light having one or more suitable wavelengths.

[0358] In one or more embodiments, the emission layer EML may include a first compound represented by Formula 1, and may further include at least one of a second compound represented by Formula HT-1, a third compound represented by Formula ET-1, and a fourth compound represented by Formula D-1.

[0359] In one or more embodiments, the second compound may be used as a hole transport host material of the emission layer EML.

[0360] Formula HT-1

[0361]

[0362] In formula HT-1, A 1 To A 8 can be independently N or CR 51 For example, A 1 To A 8 Each (eg, all) of may be CR 51In some embodiments, selected from A 1 To A 8 Any one of them can be N, and the rest (e.g., the remaining A 1 To A 8 Each of ) can be CR 51 .

[0363] In formula HT-1, L 1 It may be a direct bond, 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. 1 It may be a direct bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted divalent biphenyl group, and / or a substituted or unsubstituted divalent carbazole group, etc., but the embodiments of the present disclosure are not limited thereto.

[0364] In formula HT-1, Y a Can be direct key, CR 52 R 53 or SiR 54 R 55 For example, it may refer to two benzene rings connected to the nitrogen atom in formula HT-1 via a direct bond, In formula HT-1, when Y a When it is a direct bond, the second compound represented by Formula HT-1 may include a carbazole moiety.

[0365] In formula HT-1, Ar 1 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. 1 It may be a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and / or a substituted or unsubstituted biphenyl group, etc., but the embodiments of the present disclosure are not limited thereto.

[0366] In formula HT-1, R 51 To R 55 and R and R are independently hydrogen atoms, deuterium atoms, halogen atoms, cyano groups, substituted or unsubstituted silyl groups, substituted or unsubstituted sulfenyl groups, substituted or unsubstituted oxy groups, substituted or unsubstituted amine groups, substituted or unsubstituted boron groups, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 60 ring carbon atoms, or substituted or unsubstituted heteroaryl groups having 2 to 60 ring carbon atoms. In some embodiments, R 51 To R 55Each of R may optionally be bonded to an adjacent group to form a ring. 51 To R 55 R may each independently be a hydrogen atom or a deuterium atom. 51 To R 55 Each may independently be an unsubstituted methyl group or an unsubstituted phenyl group.

[0367] In one or more embodiments, the second compound represented by Formula HT-1 may be represented by any one selected from among the compounds represented by Compound Group 2. The emission layer EML may include at least one selected from among the compounds represented by Compound Group 2 as a hole transport host material.

[0368] Compound Group 2

[0369]

[0370]

[0371]

[0372]

[0373]

[0374]

[0375] In the example compounds presented in compound group 2, "D" may refer to a deuterium atom, and "Ph" may refer to a substituted or unsubstituted phenyl group. For example, in the example compounds presented in compound group 2, "Ph" may refer to an unsubstituted phenyl group.

[0376] In one or more embodiments, the emission layer EML may include a third compound represented by Formula ET-1. For example, the third compound may be used as an electron transport host material for the emission layer EML.

[0377] Formula ET-1

[0378]

[0379] In formula ET-1, selected from X 1 To X 3 At least one of them is N, and the rest (e.g., the remaining X 1 To X 3 Each of ) can be CR 56 For example, select X 1 To X 3 Any one of them can be N, and the rest (e.g., the remaining X 1 To X3 Each of the ) can be independently CR 56 In this case, the third compound represented by Formula ET-1 may include a pyridine moiety. In some embodiments, the compound selected from X 1 To X 3 Two of them can be N, and the rest (a remaining X 1 To X 3 ) can be CR 56 In this case, the third compound represented by Formula ET-1 may include a pyrimidine moiety. In some embodiments, X 1 To X 3 All may be N. In this case, the third compound represented by Formula ET-1 may include a triazine moiety.

[0380] In formula ET-1, R 56 It 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 60 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring carbon atoms.

[0381] In Formula ET-1, b1 to b3 may each independently be an integer of 0 to 10.

[0382] In formula ET-1, Ar 2 To Ar 4 and R and R are independently hydrogen atoms, deuterium atoms, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 ring carbon atoms, or substituted or unsubstituted heteroaryl groups having 2 to 30 ring carbon atoms. 2 To Ar 4 Each of them independently may be a substituted or unsubstituted phenyl group or a substituted or unsubstituted carbazolyl group.

[0383] In formula ET-1, L 2 To L 4 and L are independently a direct bond, 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. In some embodiments, when b1 to b3 are integers of 2 or greater, L 2 To L 4 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.

[0384] In one or more embodiments, the third compound may be represented by any one of the compounds selected from the compound group 3. The light emitting element ED of one or more embodiments may include any one of the compounds selected from the compound group 3 (eg, compound).

[0385] Compound Group 3

[0386]

[0387]

[0388]

[0389]

[0390]

[0391]

[0392]

[0393]

[0394]

[0395]

[0396]

[0397]

[0398] In the example compounds presented in compound group 3, "D" refers to a deuterium atom, and "Ph" refers to an unsubstituted phenyl group.

[0399] The emission layer EML may include a second compound and a third compound, and the second compound and the third compound may form an exciplex. In the emission layer EML, the exciplex may be formed by a hole transport host and an electron transport host. In this case, the triplet energy of the exciplex formed by the hole transport host and the electron transport host may correspond to the difference between the lowest unoccupied molecular orbital (LUMO) energy level of the electron transport host and the highest occupied molecular orbital (HOMO) energy level of the hole transport host.

[0400] For example, the absolute value of the triplet energy (T1) of the exciplex formed by the hole transport host and the electron transport host can be about 2.4 eV to about 3.0 eV. In some embodiments, the triplet energy of the exciplex can be a value less than the energy gap of each host material. The exciplex can have a triplet energy of about 3.0 eV (which is the energy gap of each of the hole transport host and the electron transport host) or less.

[0401] In one or more embodiments, the emission layer EML may further include a fourth compound in addition to the first to third compounds as described. The fourth compound may be used as a phosphorescence sensitizer of the emission layer EML. Energy may be transferred from the fourth compound to the first compound, thereby emitting light.

[0402] For example, the emission layer EML may include an organic metal complex as the fourth compound, the organic metal complex including platinum (Pt) as a central metal atom and a ligand connected to the central metal atom. The emission layer EML in the light-emitting element ED of one or more embodiments may include a compound represented by Formula D-1 as the fourth compound:

[0403] Formula D-1

[0404]

[0405] In formula D-1, Q 1 To Q 4 can all independently be C or N.

[0406] In Formula D-1, C1 to C4 may each independently be a substituted or unsubstituted hydrocarbon ring having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic ring having 2 to 30 ring carbon atoms.

[0407] In formula D-1, L 11 To L 13 can be independently a direct bond, *-O-*, *-S-*, a substituted or unsubstituted divalent alkyl group having 1 to 20 carbon atoms, 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. 11 To L 13 In the figure, “-*” refers to the part connected to C1 to C4.

[0408] In formula D-1, b1 to b3 may be independently 0 or 1. When b1 is 0, C1 and C2 may not be connected to each other. When b2 is 0, C2 and C3 may not be connected to each other. When b3 is 0, C3 and C4 may not be connected to each other.

[0409] In formula D-1, R 61 To R 66 and R and R are independently hydrogen atoms, deuterium atoms, halogen atoms, cyano groups, substituted or unsubstituted silyl groups, substituted or unsubstituted sulfenyl groups, substituted or unsubstituted oxy groups, substituted or unsubstituted amine groups, substituted or unsubstituted boron groups, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 60 ring carbon atoms, or substituted or unsubstituted heteroaryl groups having 2 to 60 ring carbon atoms. In some embodiments, R 61 To R 66 Each of R may optionally bind to an adjacent group to form a ring. 61 To R 66 Each may independently be a substituted or unsubstituted methyl group or a substituted or unsubstituted tert-butyl group.

[0410] In Formula D-1, d1 to d4 may each independently be an integer of 0 to 4. In Formula D-1, when each of d1 to d4 is 0, the fourth compound may not be R 61 To R 64 Each of d1 to d4 is 4 and R 61 To R 64 The case where all R are hydrogen atoms may be the same as the case where each of d1 to d4 is 0. When each of d1 to d4 is an integer of 2 or more, the plurality of R 61 To R 64 Can be the same, or selected from multiple R 61 To R 64 At least one of the groups may be different from the other groups.

[0411] In formula D-1, C1 to C4 may each independently be a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted heterocyclic ring represented by any one selected from C-1 to C-4:

[0412]

[0413] In C-1 to C-4, P 1 Can be C-* or CR 74 , P 2 Can be N-* or NR 81 , P 3 Can be N-* or NR 82 , and P 4 Can be C-* or CR 88 . R 71 To R 88Each may be independently 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, and may be optionally bonded to an adjacent group to form a ring.

[0414] In some embodiments, in C-1 to C-4, corresponds to the part connected to Pt as the central metal atom, and "-*" corresponds to the part connected to the adjacent ring groups C1 to C4 or the linking group L 11 To L 13 part.

[0415] The emission layer EML of one or more embodiments may include at least one of the second compound to the fourth compound and the first compound as a condensed polycyclic compound. For example, the emission layer EML may include the first compound, the second compound and the third compound. In the emission layer EML, the second compound and the third compound may form an exciplex, and energy may be transferred from the exciplex to the first compound, thereby emitting light.

[0416] In some embodiments, the emission layer EML may include a first compound, a second compound, a third compound, and a fourth compound. In the emission layer EML, the second compound and the third compound may form an exciplex, and energy may be transferred from the exciplex to the fourth compound and the first compound, thereby emitting light. In one or more embodiments, the fourth compound may be a sensitizer. The fourth compound in the emission layer EML included in the light-emitting element ED of one or more embodiments may be used as a sensitizer to transfer energy from the host to the first compound as a light-emitting dopant. For example, the fourth compound used as an auxiliary dopant accelerates the energy transfer to the first compound as a light-emitting dopant, thereby increasing the emissivity of the first compound. Therefore, the emission layer EML of one or more embodiments may improve the luminous efficiency. In some embodiments, when the energy transfer to the first compound increases, the excitons formed in the emission layer EML are not accumulated inside the emission layer EML and emit light quickly, so the degradation of the light-emitting element ED may be reduced. Therefore, the service life (e.g., lifespan) of the light-emitting element ED of one or more embodiments may be increased.

[0417] The light-emitting element ED of one or more embodiments may include all of the first compound, the second compound, the third compound, and the fourth compound, and the emission layer EML may include a combination of two host materials and two dopant materials. In the light-emitting element ED of one or more embodiments, the emission layer EML may simultaneously (e.g., concurrently) include the second compound and the third compound as two different hosts, the first compound emitting delayed fluorescence, and the fourth compound including an organic metal complex, thereby exhibiting excellent or suitable luminous efficiency characteristics.

[0418] In one or more embodiments, the fourth compound represented by Formula D-1 may be represented by at least one selected from among the compounds represented by Compound Group 4. The emission layer EML may include at least one selected from among the compounds represented by Compound Group 4 as a sensitizer material.

[0419] Compound Group 4

[0420]

[0421]

[0422]

[0423]

[0424] In the example compounds presented in Compound Group 4, "D" refers to a deuterium atom.

[0425] When the emission layer EML in the light-emitting element ED of one or more embodiments includes all of the first compound, the second compound, and the third compound, the content (e.g., amount) of the first compound relative to the total weight of the first compound, the second compound, and the third compound may be about 0.1 wt% to about 5 wt%. However, the embodiments of the present disclosure are not limited thereto. When the content (e.g., amount) of the first compound satisfies the ratio described herein, the energy transfer from the second compound and the third compound to the first compound may be increased, and thus the luminous efficiency and the device service life (e.g., lifespan) may be increased.

[0426] The content of the second compound and the third compound in the emission layer EML may be the remaining weight except the weight of the first compound. For example, the content of the second compound and the third compound in the emission layer EML may be about 65 wt % to about 95 wt % relative to the total weight of the first compound, the second compound and the third compound.

[0427] A weight ratio of the second compound to the third compound may be about 3:7 to about 7:3 in the total weight of the second compound and the third compound.

[0428] When the contents of the second compound and the third compound satisfy the ratio described herein, the charge balance characteristics in the emission layer EML are improved, so the luminous efficiency and the device service life (e.g., lifespan) can be increased. When the contents of the second compound and the third compound deviate from the ratio range described herein, the charge balance in the emission layer EML is destroyed, so the luminous efficiency may be reduced and the light-emitting element ED may be easily degraded.

[0429] When the emission layer EML includes the fourth compound, the content (e.g., amount) of the fourth compound in the emission layer EML may be about 10 wt% to about 30 wt% relative to the total weight of the first compound, the second compound, the third compound, and the fourth compound. However, the embodiments of the present disclosure are not limited thereto. When the content (e.g., amount) of the fourth compound satisfies the content (e.g., amount) described herein, the energy transfer from the host to the first compound as a light-emitting dopant can be increased, so that the luminous ratio can be improved, and thus the luminous efficiency of the emission layer EML can be improved. When the first compound, the second compound, the third compound, and the fourth compound included in the emission layer EML meet the content (e.g., amount) ratio range described herein, excellent or suitable luminous efficiency and long service life (e.g., lifespan) can be achieved.

[0430] In some embodiments, the light-emitting element ED of an embodiment may include a plurality of emission layers. The plurality of emission layers may be arranged by sequentially stacking. For example, the light-emitting element ED including a plurality of emission layers may emit white light. The light-emitting element ED including a plurality of emission layers may be a light-emitting element having a series structure. When the light-emitting element ED includes a plurality of emission layers, in one embodiment, at least one emission layer EML may include a first compound represented by Formula 1. In addition, when the light-emitting element ED includes a plurality of emission layers, at least one emission layer EML may include all of the first compound, the second compound, the third compound, and the fourth compound as described herein.

[0431] In the light emitting element ED of one or more embodiments, the emission layer EML may include an anthracene derivative, a pyrene derivative, a fluoranthene derivative, Derivatives, dihydrobenzanthracene derivatives or benzo[9,10]phenanthrene derivatives. For example, the emission layer EML may include anthracene derivatives or pyrene derivatives.

[0432] exist Figures 3 to 6 In each light-emitting element ED of the embodiment shown in , in addition to the host and dopant described herein, the emission layer EML may further include a suitable host and dopant, for example, 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.

[0433] Formula E-1

[0434]

[0435] In formula E-1, R 31 To R 40 may each 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 carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and may optionally be bonded to an adjacent group to form a ring. In some embodiments, R 31 To R 40 It may be optionally bonded to an adjacent group to form a saturated hydrocarbon ring, an unsaturated hydrocarbon ring, a saturated heterocyclic ring, or an unsaturated heterocyclic ring.

[0436] In Formula E-1, c and d may each independently be an integer of 0 to 5.

[0437] Formula E-1 can be represented by any one selected from Compound E1 to Compound E19:

[0438]

[0439]

[0440] In one or more embodiments, the emission 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.

[0441] Formula E-2a

[0442]

[0443] In Formula E-2a, a may be an integer from 0 to 10, L a It can be a direct bond, 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. In some embodiments, when 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.

[0444] In some embodiments, in Formula E-2a, A 1 To A 5 can be independently N or CR i . Ra To R i Each of them 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 having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and may optionally be bonded to an adjacent group to form a ring. a To R i It may be optionally bonded to an adjacent group to form a hydrocarbon ring or a heterocyclic ring containing N, O and / or S etc. as ring-constituting atoms.

[0445] In some embodiments, in Formula E-2a, selected from A 1 To A 5 Two or three of them may be N, and the rest (i.e., the remaining A 1 To A 5 Each of ) can be CR i .

[0446] Formula E-2b

[0447]

[0448] 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 is a direct bond, 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. In some embodiments, b is an integer from 0 to 10, and when 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.

[0449] 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 examples, and the compounds represented by Formula E-2a or Formula E-2b are not limited to the compounds represented in Compound Group E-2.

[0450] Compound Group E-2

[0451]

[0452]

[0453]

[0454] The emission layer EML may further include a general material suitable in the art as a host material. For example, the emission layer EML may include at least one of bis(4-(9H-carbazol-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(N-carbazyl)-1,1'-biphenyl (CBP), 1,3-bis(N-carbazyl)benzene (mCP), 2,8-bis(diphenylphosphino)dibenzo[b,d]furan (PPF), 4,4',4"-tri(carbazol-9-yl)triphenylamine (TCTA), and 1,3,5-tri(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBi) as a host material. However, 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), distyryl arylide (DSA), 4,4'-bis(carbazol-9-yl)-2,2'-dimethyl-biphenyl (CDBP), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), hexaphenylcyclotriphosphazene (CP1), 1,4-bis(triphenylsilyl)benzene (UGH 2 ), hexaphenylcyclotrisiloxane (DPSiO 3 ) and / or octaphenylcyclotetrasiloxane (DPSiO 4 ) etc. can be used as the main material.

[0455] The emission layer EML may include a compound represented by Formula Ma. The compound represented by Formula Ma may be used as a phosphorescent dopant material.

[0456] Formula Ma

[0457]

[0458] In formula Ma, Y 1 To Y 4 and Z 1 To Z 4 Can be CR independently 1 or N, R 1 To R 4Can be each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted sulfenyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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 optionally can be bonded to an adjacent group to form a ring. In formula Ma, m is 0 or 1, and n is 2 or 3. In formula Ma, when m is 0, n is 3, and when m is 1, n is 2.

[0459] The compound represented by the formula Ma may be used as a phosphorescent dopant.

[0460] 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 examples, and the compound represented by formula Ma is not limited to the compounds represented by compound M-a1 to compound M-a25.

[0461]

[0462]

[0463] The emission layer EML may include a compound represented by any one selected from Formula Fa to Formula Fc. The compound represented by Formula Fa to Formula Fc may be used as a fluorescent dopant material.

[0464] Formula

[0465]

[0466] In the formula Fa, R a To R j Two of them can be independently substituted with *-NAr 1 Ar 2 . Selected from R a To R j Among the unrecognized 1 Ar 2 The other 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 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.

[0467] In *-NAr 1 Ar 2 in Ar 1 and Ar2 and Ar may be independently substituted or unsubstituted aryl groups having 6 to 30 ring carbon atoms or substituted or unsubstituted heteroaryl groups having 2 to 30 ring carbon atoms. 1 and Ar 2 At least one of may be a heteroaryl group containing O or S as a ring-forming atom.

[0468] Formula Fb

[0469]

[0470] In formula Fb, R a and R b Each of them may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 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, and may optionally be bonded to 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.

[0471] In Formula Fb, U and V may each independently be a substituted or unsubstituted hydrocarbon ring having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic ring having 2 to 30 ring carbon atoms. 1 To Ar 4 At least one of them may be a heteroaryl group containing O or S as a ring-constituting atom.

[0472] In formula Fb, the number of rings represented by U and V can be 0 or 1 independently. For example, in formula Fb, it means that when the number of U or V is 1, one ring constitutes a fused ring at the portion represented by U or V, and when the number of U or V is 0, the ring represented by U or V does not exist. For example, when the number of U is 0 and the number of V is 1, or when the number of U is 1 and the number of V is 0, the fused ring with a fluorene core in formula Fb can be a cyclic compound with four rings. In some embodiments, when the respective numbers of U and V are 0, the fused ring with a fluorene core in formula Fb can be a cyclic compound with three rings. In some embodiments, when the respective numbers of U and V are 1, the fused ring with a fluorene core in formula Fb can be a cyclic compound with five rings.

[0473] Formula Fc

[0474]

[0475] In Formula Fc, A 1 and A 2 can be independently O, S, Se or NR m , and R m It 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 may be optionally bonded to an adjacent group to form a ring.

[0476] In Formula Fc, A 1 and A 2 can each independently bind to a substituent of an adjacent ring to form a fused ring. 1 and A 2 can be independently NR m When A 1 Can be combined with R 4 or R 5 To form a ring. In some embodiments, A 2 Can be combined with R 7 or R 8 to form a ring.

[0477] In one or more embodiments, the emission layer EML may also include a styryl derivative (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)naphthalene-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 (for example, 2,5,8,11-tetra-tert-butylperylene (TBP)) and / or pyrene and its derivatives (for example, 1,1'-dipyrene, 1,4-dipyrenylbenzene, 1,4-bis(N,N-diphenylamino)pyrene), etc. as suitable dopant materials.

[0478] The emission layer EML may further include a suitable phosphorescent dopant material. For example, a metal complex containing iridium (Ir), platinum (Pt), osmium (Os), gold (Au), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) or thulium (Tm) may be used as a phosphorescent dopant. For example, bis(4,6-difluorophenylpyridine-N,C2') picolinyl iridium (III) (FIrpic), bis(2,4-difluorophenylpyridine)-tetrakis(1-pyrazolyl) borate iridium (III) (FIrpic), 6 ) or platinum octaethylporphyrin (PtOEP) may be used as a phosphorescent dopant. However, the embodiments of the present disclosure are not limited thereto.

[0479] The emission layer EML may include a quantum dot material. The core of the quantum dot may be selected from II-VI group compounds, III-VI group compounds, I-III-IV group compounds, III-V group compounds, III-II-V group compounds, IV-VI group compounds, IV group elements, IV group compounds, or combinations thereof.

[0480] The II-VI compound can be selected from the group consisting of: a binary compound selected from the group consisting of CdSe, CdTe, CdS, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof; a ternary compound selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZ nSe, 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.

[0481] 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.

[0482] The I-III-VI group compound can be selected from: a ternary compound selected from AgInS, AgInS 2 、CuInS、CuInS2 、AgGaS 2 、CuGaS 2 、CuGaO 2 、AgGaO 2 、AgAlO 2 and mixtures thereof; or quaternary compounds such as AgInGaS 2 or CuInGaS 2 .

[0483] 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 some embodiments, the III-V compound may also include a Group II metal. For example, InZnP or the like may be selected as the III-II-V group compound.

[0484] The IV-VI 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.

[0485] Each element included in a multi-element (i.e., multi-element) 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 chemical formula refers to the type (species) of the element included in the compound, and the ratio of the elements in the compound may be different. For example, AgInGaS 2 Can refer to AgIn x Ga 1-x S 2 (where x is a real number between 0 and 1).

[0486] In some embodiments, the quantum dot may have a single structure or a core-shell dual structure in which the concentration of each element included in the quantum dot is substantially uniform. For example, the material included in the core may be different from the material included in the shell.

[0487] 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 as a charged 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 in which the concentration of the element present in the shell decreases toward the center.

[0488] In some embodiments, quantum dots may have a core / shell structure as described herein including a core comprising nanocrystals and a shell around (eg, surrounding) the core. Examples of shells of quantum dots may include metal oxides or non-metal oxides, semiconductor compounds, or combinations thereof.

[0489] 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, Co 3 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.

[0490] In addition, 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.

[0491] Each element included in a polynary (i.e., multi-element) compound (such as a binary compound or a ternary compound) may be present in the particle in a substantially uniform or substantially non-uniform concentration distribution. For example, the chemical formula refers to the type (species) of the elements included in the compound, and the ratio of the elements in the compound may be different.

[0492] The quantum dots can have a full width at half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less, about 40 nm or less, or about 30 nm or less, and within the described range, color purity or color reproducibility can be improved. In some embodiments, the light emitted by such quantum dots is emitted in all directions, so that a wide viewing angle can be improved.

[0493] In some embodiments, 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 or cubic nanoparticles, nanotubes, nanowires, nanofibers and / or nanoplates can be used.

[0494] Since the size of the quantum dots is adjusted or the element ratio in the quantum dot compound is adjusted, the energy band gap can be controlled, and therefore light in one or more suitable wavelength ranges can be obtained in the quantum dot emission layer. Therefore, using quantum dots as described (using quantum dots of different sizes or quantum dot compounds of different element ratios), it is possible to realize a light-emitting element ED that emits light in one or more suitable wavelengths. For example, the size of the quantum dots or the element ratio in the quantum dot compound can be selected to emit red light, green light and / or blue light. In some embodiments, quantum dots can be configured to emit white light by combining one or more suitable colors of light.

[0495] exist Figures 3 to 6 In each of the light emitting elements ED of the embodiment shown in , the electron transport region ETR is disposed on the emission 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.

[0496] 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.

[0497] 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, and may have a single layer structure formed of an electron injection material and an electron transport material. In some 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 emission 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.

[0498] The electron transport region ETR may be formed using one or more suitable methods such as a vacuum deposition method, a spin coating method, a casting method, a Langmuir-Blodgett (LB) method, an inkjet printing method, a laser printing method, and a laser induced thermal imaging (LITI) method.

[0499] The electron transport region ETR may include a compound represented by Formula ET-2:

[0500] Formula ET-2

[0501]

[0502] In formula ET-2, selected from X 1 To X 3 At least one of them is N, and the rest (e.g., the remaining X 1 To X 3 Each of ) can be CR a . R a It 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 3 Each 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.

[0503] In Formula ET-2, a to c may each independently be an integer from 0 to 10. In Formula ET-2, L 1 To L 3and L are independently a direct bond, 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. In some embodiments, when a to c are 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.

[0504] 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) or a mixture thereof.

[0505] The electron transport region ETR may include at least one selected from compounds ET1 to ET36:

[0506]

[0507]

[0508]

[0509] In some 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 some 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 mixed material of an electron transport material and an insulating organic metal salt. The organic metal salt can be a material with an energy band gap of about 4eV or greater. For example, the organic metal salt can include, for example, a metal acetate, a metal benzoate, a metal acetoacetate, a metal acetylacetonate, or a metal stearate.

[0510] In addition to the materials described herein, the electron transport region ETR may also 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), but embodiments of the present disclosure are not limited thereto.

[0511] The electron transport region ETR may include the compound of the electron transport region ETR described herein in at least one of the electron injection layer EIL, the electron transport layer ETL, and the hole blocking layer HBL.

[0512] When the electron transport region ETR includes the electron transport layer ETL, the electron transport layer ETL may have a thickness of about 100 Å. to about (For example, about to about ). When the thickness of the electron transport layer ETL satisfies the above 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 When 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.

[0513] The second electrode EL2 is disposed 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, when the first electrode EL1 is an anode, the second electrode EL2 may be a cathode, and when the first electrode EL1 is a cathode, the second electrode EL2 may be an anode.

[0514] 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 (e.g., indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and / or indium tin zinc oxide (ITZO), etc.).

[0515] When the second electrode EL2 is a transflective electrode or a reflective electrode, the second electrode EL2 may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, W, a compound or mixture thereof (e.g., AgMg, AgYb or MgYb) or a material having a multilayer structure such as LiF / Ca or LiF / Al. In some embodiments, the second electrode EL2 may have a multilayer structure including a reflective film or a transflective film formed by the materials described herein and a transparent conductive film formed by ITO, IZO, ZnO and / or ITZO, etc. For example, the second electrode EL2 may include the metal material described herein, a combination of at least two of the metal materials described herein, and / or an oxide of the metal material described herein, etc.

[0516] In some embodiments, the second electrode EL2 may be connected to the auxiliary electrode. When the second electrode EL2 is connected to the auxiliary electrode, the resistance of the second electrode EL2 may be reduced.

[0517] In some embodiments, a cover layer CPL may be further disposed on the second electrode EL2 of the light emitting element ED of one or more embodiments. The cover layer CPL may include a plurality of layers or a single layer.

[0518] In one or more embodiments, the cover layer CPL may be an organic layer or an inorganic layer. For example, when the cover layer CPL includes an inorganic material, the inorganic material may include an alkali metal compound (eg, LiF), an alkaline earth metal compound (eg, MgF 2 )、SiON、SiN x and / or SiO y wait.

[0519] For example, when the capping layer CPL includes an organic material, the organic material may include 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 resin or acrylate such as methacrylate. However, the embodiments of the present disclosure are not limited thereto, and the cover layer CPL may include at least one selected from the group consisting of compounds P1 to P5:

[0520]

[0521]

[0522] In some embodiments, the refractive index of the cover layer CPL may be about 1.6 or greater. For example, with respect to light in a wavelength range of about 550 nm to about 660 nm, the refractive index of the cover layer CPL may be about 1.6 or greater.

[0523] Figures 7 to 10 Each of them is a cross-sectional view of a display device DD-a, DD-TD, DD-b, and DD-c according to one or more embodiments of the present disclosure. Figures 7 to 10 When describing the display device of the embodiment, the description of the display device already described is omitted. Figures 1 to 6 Rather than describing repeated features described in , their differences will be described primarily (e.g., in more detail).

[0524] Reference Figure 7 The display device DD-a according to one or more embodiments may include a display panel DP including a display device layer DP-ED, and a light control layer CCL and a color filter layer CFL disposed on the display panel DP. Figure 7 In one or more embodiments shown in , the display panel DP may include a base layer BS and a circuit layer DP-CL and a display device layer DP-ED disposed on the base layer BS, and the display device layer DP-ED may include a light emitting element ED.

[0525] The light emitting element ED may include a first electrode EL1, a hole transport region HTR disposed on the first electrode EL1, an emission layer EML disposed on the hole transport region HTR, an electron transport region ETR disposed on the emission layer EML, and a second electrode EL2 disposed on the electron transport region ETR. Figures 3 to 6 The structure of the light emitting element ED can be equally applied to Figure 7 The structure of the light-emitting element ED shown in FIG.

[0526] Reference Figure 7, the emission layer EML can be set in the opening OH defined in the pixel defining film PDL. For example, the emission layer EML divided by the pixel defining film PDL and set to correspond to each light-emitting area PXA-R, PXA-G and PXA-B can emit light in substantially the same wavelength range. In the display device DD-a of one or more embodiments, the emission layer EML can emit blue light. In some embodiments, unlike the illustrated configuration, in one or more embodiments, the emission layer EML can be set as a common layer in the entire light-emitting area PXA-R, PXA-G and PXA-B.

[0527] The light control layer CCL may be disposed on the display panel DP. 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 its wavelength. For example, the light control layer CCL may be a layer including quantum dots or a layer including a phosphor.

[0528] 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.

[0529] Reference Figure 7 , the dividing 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 the embodiments of the present disclosure are not limited thereto. Figure 7 It is shown that the dividing pattern BMP does not overlap the light-control parts CCP1 , CCP2 , and CCP3 , but at least a portion of the edges of the light-control parts CCP1 , CCP2 , and CCP3 may overlap the dividing pattern BMP.

[0530] The light control layer CCL may include a first light control part CCP1, a second light control part CCP2 and a third light control part CCP3, the first light control part CCP1 includes a first quantum dot QD1 that converts a first color light provided from the light emitting element ED into a second color light, the second light control part CCP2 includes a second quantum dot QD2 that converts the first color light into a third color light, and the third light control part CCP3 transmits the first color light.

[0531] In one or more embodiments, the first light control unit CCP1 may provide red light as the second color light, and the second light control unit CCP2 may provide green light as the third color light. The third light control unit 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. With respect to the quantum dots QD1 and QD2, the same contents as those described herein may be applied.

[0532] In some embodiments, the light control layer CCL may further include a scatterer SP. The first light control part CCP1 may include a first quantum dot QD1 and a scatterer SP, the second light control part CCP2 may include a second quantum dot QD2 and a scatterer SP, and the third light control part CCP3 may not include (e.g., may exclude) any quantum dot but include a scatterer SP.

[0533] 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 a member selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2 and hollow spherical silica, or may be selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2 A mixture of at least two materials selected from the group consisting of quartz and hollow spherical silica.

[0534] The first light control part CCP1, the second light control part CCP2, and the third light control part 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 part CCP1 may include first quantum dots QD1 and scatterers SP dispersed in the first base resin BR1, the second light control part CCP2 may include second quantum dots QD2 and scatterers SP dispersed in the second base resin BR2, and the third light control part CCP3 may include scatterers SP dispersed in the third base resin BR3.

[0535] The matrix 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 components, which may generally be referred to as binders. For example, the matrix resins BR1, BR2 and BR3 may be acrylic resins, urethane resins, silicone resins and / or epoxy resins, etc. The matrix resins BR1, BR2 and BR3 may be transparent resins. In one or more embodiments, the first matrix resin BR1, the second matrix resin BR2 and the third matrix resin BR3 may be the same or different from each other.

[0536] The light control layer CCL may include a barrier layer BFL1. The barrier layer BFL1 may be used to prevent or reduce the penetration of moisture and / or oxygen (hereinafter, referred to as "moisture / oxygen"). The barrier layer BFL1 may block or reduce the exposure of the light control parts CCP1, CCP2, and CCP3 to moisture / oxygen. In some embodiments, the barrier layer BFL1 may cover the light control parts CCP1, CCP2, and CCP3. In some embodiments, the barrier layer BFL2 may be disposed between the light control parts CCP1, CCP2, and CCP3 and the filters CF1, CF2, and CF3.

[0537] The barrier layers BFL1 and BFL2 may include at least one inorganic layer. For example, the barrier layers BFL1 and BFL2 may include an inorganic material. For example, the barrier 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 ensuring transmittance, etc. In some embodiments, the barrier layers BFL1 and BFL2 may also include an organic film. The barrier layers BFL1 and BFL2 may be formed of a single layer or a plurality of layers.

[0538] 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 blocking layer BFL2 may not be disposed.

[0539] 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 polymer 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.

[0540] In some 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 polymer 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.

[0541] Furthermore, 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.

[0542] In one or more embodiments, the color filter layer CFL may further include a light shielding portion. The light shielding portion may be a black matrix. The light shielding portion may include an inorganic light shielding material or an organic light shielding material containing a black pigment or dye. The light shielding portion may prevent or reduce light leakage and may separate the boundaries between adjacent filters CF1, CF2, and CF3.

[0543] The first to third filters CF1 , CF2 , and CF3 may be disposed to correspond to the red light emitting region PXA-R, the green light emitting region PXA-G, and the blue light emitting region PXA-B, respectively.

[0544] The base substrate BL may be disposed on the color filter layer CFL. The base substrate BL may be a member that provides a base surface on which the color filter layer CFL and / or the light control layer CCL, etc. are 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 some embodiments, unlike the illustrated configuration, in one or more embodiments, the base substrate BL may not be disposed.

[0545] Figure 8 1 is a cross-sectional view showing a portion of a display device DD-TD according to one or more embodiments. In the display device DD-TD of 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. 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 between the first electrode EL1 and the second electrode EL2 in a thickness direction. The light emitting structures OL-B1, OL-B2, and OL-B3 may each include an emission layer EML ( Figure 7 ) and an emission layer EML ( Figure 7 ) of the hole transport region HTR( Figure 7 ) and the electron transport region ETR ( Figure 7 ).

[0546] 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 emission layers.

[0547] exist Figure 8In one or more embodiments shown 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.

[0548] The charge generation layers CGL1 and CGL2 may be disposed between two of the adjacent light emitting structures OL-B1, OL-B2, and OL-B3, respectively. The charge generation layers CGL1 and CGL2 may include a p-type or p-like charge generation layer and / or an n-type or n-like charge generation layer.

[0549] Reference Fig. 9 , 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 emission layers are stacked. Figure 2 Compared with the display device DD of one or more embodiments shown in FIG. Fig. 9 The difference of one or more embodiments shown in the embodiment is that the first to third light-emitting elements ED-1, ED-2 and ED-3 each include two emission 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 emission layers can emit light in substantially the same wavelength region.

[0550] The first light-emitting element ED-1 may include a first red emission layer EML-R1 and a second red emission layer EML-R2. The second light-emitting element ED-2 may include a first green emission layer EML-G1 and a second green emission layer EML-G2. In some embodiments, the third light-emitting element ED-3 may include a first blue emission layer EML-B1 and a second blue emission layer EML-B2. The emission auxiliary part OG may be disposed between the first red emission layer EML-R1 and the second red emission layer EML-R2, between the first green emission layer EML-G1 and the second green emission layer EML-G2, and between the first blue emission layer EML-B1 and the second blue emission layer EML-B2.

[0551] The emission auxiliary part OG may include a single layer or multiple layers. The emission auxiliary part OG may include a charge generation layer. More specifically, the emission auxiliary part OG may include an electron transport region, a charge generation layer, and a hole transport region stacked sequentially. The emission auxiliary part OG may be set as a common layer in all of the 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 part OG may be set by being patterned in an opening OH defined in the pixel defining film PDL.

[0552] The first red emission layer EML-R1, the first green emission layer EML-G1 and the first blue emission layer EML-B1 may be disposed between the emission auxiliary part OG and the electron transport region ETR. The second red emission layer EML-R2, the second green emission layer EML-G2 and the second blue emission layer EML-B2 may be disposed between the hole transport region HTR and the emission auxiliary part OG.

[0553] For example, the first light-emitting element ED-1 may include a first electrode EL1, a hole transport region HTR, a second red emission layer EML-R2, an emission auxiliary portion OG, a first red emission layer EML-R1, an electron transport region ETR, and a second electrode EL2 stacked sequentially. The second light-emitting element ED-2 may include a first electrode EL1, a hole transport region HTR, a second green emission layer EML-G2, an emission auxiliary portion OG, a first green emission layer EML-G1, an electron transport region ETR, and a second electrode EL2 stacked sequentially. The third light-emitting element ED-3 may include a first electrode EL1, a hole transport region HTR, a second blue emission layer EML-B2, an emission auxiliary portion OG, a first blue emission layer EML-B1, an electron transport region ETR, and a second electrode EL2 stacked sequentially.

[0554] In some embodiments, an optical auxiliary layer PL may be provided on the display device layer DP-ED. The optical auxiliary layer PL may include a polarizing layer. The optical auxiliary layer PL may be provided on the display panel DP and controls reflected light in the display panel DP due to external light. Unlike the illustrated configuration, in a display device according to one or more embodiments, an optical auxiliary layer PL may not be provided.

[0555] and Figure 8 and Fig. 9 different, Fig.10The display device DD-c is shown to include 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 between the first electrode EL1 and the second electrode EL2 in the thickness direction. The third light emitting structure OL-B3, the second light emitting structure OL-B2, the first light emitting structure OL-B1 and the fourth light emitting structure OL-C1 are stacked in the order stated in the thickness direction. The charge generation layers CGL1, CGL2 and CGL3 may be disposed between the first to fourth light emitting structures OL-B1, OL-B2, OL-B3 and OL-C1. 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 in different wavelength regions.

[0556] The charge generation layers CGL1, CGL2 and CGL3 disposed between adjacent light emitting structures OL-B1, OL-B2, OL-B3 and OL-C1 may include a p-type or p-like charge generation layer (p charge generation layer) and / or an n-type or n-like charge generation layer (n charge generation layer).

[0557] In one or more embodiments, the electronic device may include a display device including a plurality of light emitting elements and a control unit 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 suitable embodiments. For example, the electronic device may include not only large electronic devices (such as televisions, monitors, or outdoor billboards), but also small 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).

[0558] Fig.11 1 is a view showing a vehicle AM ​​in which first to fourth display devices DD-1, DD-2, DD-3, DD-4 are provided. At least one selected from among the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may include the same as described in reference Figure 1 and Figure 2 as well as Figures 7 to 10 The described display devices DD, DD-a, DD-TD, DD-b and DD-c have the same construction.

[0559] Fig.11 The vehicle AM ​​is shown, but this is an example, and the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may be provided in other vehicles such as bicycles, motorcycles, trains, ships, and airplanes. In some embodiments, at least one selected from the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 including the same structure as the display devices DD, DD-TD, DD-a, DD-b, and DD-c of one or more embodiments may be used for 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 some embodiments, these are provided only as embodiments, and therefore, may be adopted in other electronic devices unless departing from the present disclosure.

[0560] At least one selected from the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may include as shown in reference Figures 3 to 6 The light emitting element ED of one or more embodiments is described.

[0561] Reference Fig.11 The vehicle AM ​​may include a steering wheel HA and a transmission device GR for driving the vehicle AM. In some embodiments, the vehicle AM ​​may include a front window GL arranged to face the driver.

[0562] The first display device DD-1 may be disposed in a first area overlapping the steering wheel HA. For example, the first display device DD-1 may be a digital cluster that displays 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 represented as digital images.

[0563] The second display device DD-2 can be arranged in a second area facing the driver's seat and overlapping with the front window GL. The driver's seat can be a seat in which the steering wheel HA is arranged. For example, the second display device DD-2 can be a head-up display (HUD) that displays the second information of the vehicle AM. The second display device DD-2 can be optically transparent. The second information can include a digital number indicating the driving speed, and can also include information such as the current time. Different from the illustrated construction, the second information of the second display device DD-2 can be projected onto the front window GL for display.

[0564] The third display device DD-3 may be disposed in a third area adjacent to the transmission device GR. For example, the third display device DD-3 may be disposed between the driver's seat and the passenger seat, and may be a central information display (CID) of the vehicle for displaying the third information. The passenger seat may be a seat spaced and / or separated from the driver's seat, and the transmission device GR is disposed between the passenger seat and the driver's seat. The third information may include information about traffic (e.g., navigation information), playing music or audio or video (or images), and / or the temperature inside the vehicle AM, etc.

[0565] The fourth display device DD-4 may be spaced and / or separated from the steering wheel HA and the transmission device GR, and may be disposed 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 of the outside of the vehicle AM ​​captured by a camera module CM disposed outside the vehicle AM. The fourth information may include an image of the outside of the vehicle AM.

[0566] 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 also display information about the interior and exterior 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.

[0567] Terms such as "substantially", "about", and "roughly" are used as relative terms rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that one of ordinary skill in the art will recognize. They may include the stated value and an acceptable range of deviation as determined by one of ordinary skill in the art, taking into account the limitations and errors associated with the measurement of the quantity. For example, "about" may refer to one or more standard deviations, or ±30%, ±20%, ±10%, ±5% of the stated value.

[0568] The 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 (such as 2.4 to 7.6, for example) having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0. Therefore, the applicant reserves the right to amend this specification (including the claims) to explicitly list any subranges included in the ranges explicitly listed here.

[0569] According to the embodiments of the present disclosure described herein, the light-emitting device, the light-emitting element and / or any other related device or component can be implemented using any suitable 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 can be formed on an integrated circuit (IC) chip or a separate IC chip. In addition, the various components of the light-emitting device and / or the light-emitting element can be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on a substrate. In addition, the various components of the light-emitting device and / or the light-emitting element can be processes or threads that run on one or more processors in one or more computing devices, execute computer program instructions, and interact with other system components to perform various functions described herein. The computer program instructions are stored in a memory, which can be implemented in a computing device using a standard memory device (such as a random access memory (RAM) as an example). The computer program instructions can also be stored in other non-temporary computer-readable media (such as CD-ROM, flash drive, etc. as an example). In addition, those skilled in the art should recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or the functionality of a particular computing device may be distributed across one or more other computing devices without departing from the scope of the embodiments of the present disclosure.

[0570] In the present disclosure, when the particles are spherical, "diameter" means the average particle diameter, and when the particles are non-spherical, "diameter" means 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. 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 corresponding to the cumulative volume of 50% by volume in a particle size distribution (e.g., cumulative distribution), and refers to the value of the particle diameter corresponding to 50% from the smallest particle when the total number of particles is 100% in a distribution curve accumulated in the order of the smallest particle size to the largest particle size. Particle size analysis can be performed with a HORIBA LA-950 laser particle size analyzer.

[0571] Hereinafter, a fused polycyclic compound according to one or more embodiments of the present disclosure and a light-emitting element according to one or more embodiments will be described in more detail with reference to examples and comparative examples. In some embodiments, the described examples are shown only for understanding the present disclosure, and the scope of the present disclosure is not limited thereto.

[0572] Example

[0573] 1. Synthesis of fused polycyclic compounds

[0574] First, the synthesis method of the fused polycyclic compound according to this embodiment of the present disclosure will be described in more detail by exemplifying the synthesis methods of Compound 1, Compound 7, Compound 11, Compound 31, Compound 45, Compound 46, Compound 49, and Compound 73. In some embodiments, the synthesis method of the fused polycyclic compound described below is provided as an example, and thus the synthesis method of the fused polycyclic compound according to an embodiment of the present disclosure is not limited to the example.

[0575] (1) Synthesis of Compound 1

[0576] (Synthesis of Intermediate Compound 1-a)

[0577]

[0578] Under argon atmosphere, 5-(tert-butyl)-N1,N3-bis(5'-(tert-butyl)-[1,1':3',1"-terphenyl]-2'-yl)benzene-1,3-diamine (10 g, 13.5 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d4 (6.6 g, 27 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (P(t-Bu) 3 , 1.6 mL, 3.8 mmol) and sodium tert-butoxide (NatBuO, 11.5 g, 120 mmol) were placed in a 2 L flask and dissolved in 300 mL of o-xylene, and then the reaction solution was stirred at about 140 ° C for about 2 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Intermediate Compound 1-a (white solid, 10 g, 77%).

[0579] ESI-LCMS of intermediate compound 1-a: [M] + :C 66 H 56 D 8 Cl 2 N 2 .958.4711

[0580] Synthesis of intermediate compound 1-b

[0581]

[0582] Under argon atmosphere, intermediate compound 1-a (10 g, 10 mmol) was placed in a 1 L flask and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After cooling, triethylamine was added to quench the reaction, and the solvent was removed under reduced pressure. 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Intermediate Compound 1-b (yellow solid, 2.4 g, 24%).

[0583] ESI-LCMS of intermediate compound 1-b: [M] + :C 66 H 53 D 6 BCl 2 N 2 .966.4532

[0584] Synthesis of compound 1

[0585]

[0586] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), N,N-diphenyl-9H-carbazole-3-amine-1,2,4,5,6,7,8-d7 (1.7 g, 5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 1 (yellow solid, 3 g, 77%).

[0587] ESI-LCMS of compound 1: [M] + :C 114 H 73 D 20 BN 6 .1576.8812

[0588] 1H-NMR (CDCl 3 ): d=7.43(s,4H),7.18(m,12H),7.01(m,8H),6.92(m,8H),6.81(m,12H),6.79(s,2H),1.32(s,18H),1.12(s,9H)

[0589] (2) Synthesis of Compound 7

[0590]

[0591] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 9H-3,9'-bicarbazole-1,1',2,2',3',4,4',5,5',6,6',7,7',8,8'-d15 (1.73 g, 5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 7 (yellow solid, 2.93 g, 74%).

[0592] ESI-LCMS of compound 7: [M]+: C 114 H 53 D 36 BN 6 .1588.9520

[0593] 1H-NMR (CDCl 3 ): d=7.42(s,4H),7.13(m,12H),7.05(m,8H),6.92(s,2H),1.35(s,18H),1.13(s,9H)

[0594] (3) Synthesis of Compound 11

[0595]

[0596] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 9'H-9,3':6',9"-tricarbazole-1',2',4',5',7',8'-d6 (2.5 g, 5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 11 (yellow solid, 2.93 g, 74%).

[0597] ESI-LCMS of compound 11: [M]+: C 138 H 85 D 18 BN 8 .1900.9500

[0598] 1H-NMR (CDCl 3 ): d=8.55(d,8H),7.94(d,8H),7.68(d,8H),7.55(d,8H),7.45(s,4H),7.21(m,12H),7.11(m,8H),6.88(s,2H),1.38(s,18H),1.11(s,9H)

[0599] (4) Synthesis of Compound 31

[0600] Synthesis of intermediate compound 31-a

[0601]

[0602] Under argon atmosphere, 3',5'-di-tert-butyl-N3,N5-bis(5'-(tert-butyl)-[1,1':3',1"-terphenyl]-2'-yl)-[1,1'-biphenyl]-3,5-diamine (10 g, 11.5 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d4 (6.6 g, 27 mmol), Pd 2 dba 3(1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (11.5 g, 120 mmol) were placed in a 2 L flask and dissolved in 300 mL of o-xylene, and then the reaction solution was stirred at about 140 ° C for about 2 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Intermediate Compound 31-a (white solid, 8.2 g, 65%).

[0603] ESI-LCMS of intermediate compound 31-a: [M] + :C 76 H 68 D 8 Cl 2 N 2 .1090.1256

[0604] Synthesis of intermediate compound 31-b

[0605]

[0606] Under argon atmosphere, intermediate compound 31-a (8 g, 7.3 mmol) was placed in a 1 L flask and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After cooling, triethylamine was added to quench the reaction, and the solvent was removed under reduced pressure by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Intermediate Compound 31-b (yellow solid, 3.5 g, 43%).

[0607] ESI-LCMS of intermediate compound 31-b: [M] + :C 76 H 65 D 6 BCl 2 N 2 .1098.5545

[0608] Synthesis of compound 31

[0609]

[0610] Under argon atmosphere, intermediate compound 31-b (3.5 g, 3.1 mmol), 9H-3,9'-bicarbazole (2.1 g, 6.2 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 31 (yellow solid, 4 g, 75%).

[0611] ESI-LCMS of compound 31: [M] + :C 124 H 95 D 6 BN 6 .1690.0096

[0612] 1H-NMR (CDCl 3 ): d=8.55(d,4H),8.19(d,4H),7.94(d,4H),7.72(d,4H),7.61(s,2H),7.58(d,4H),7.51(t,4H) ,7.43(s,4H),7.33(m,4H),7.22(t,4H),7.18(m,12H),6.93(s,2H),1.35(s,18H),1.25(s,18H)

[0613] (5) Synthesis of Compound 45

[0614]

[0615] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 9H-4,9'-bicarbazole (1.66 g, 5 mmol), Pd 2 dba 3(0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 45 (yellow solid, 2.7 g, 71%).

[0616] ESI-LCMS of compound 45: [M] + :C 114 H 83 D 6 BN 6 .1558.1276

[0617] 1H-NMR (CDCl 3 ): d=8.53(d,8H),8.19(d,4H),7.90(d,8H),7.64(d,8H),7.55(d,4H),7.51(d,2H),7.45 (s,2H),7.30(s,2H),7.21(m,12H),7.11(m,8H),6.92(s,2H),1.42(s,18H),1.13(s,9H)

[0618] (6) Synthesis of Compound 46

[0619]

[0620] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 9H-2,9'-bicarbazole (1.66 g, 5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 46 (yellow solid, 2.6 g, 68%).

[0621] ESI-LCMS of compound 46: [M] + :C 114 H 83 D 6 BN 6 .1558.1216

[0622] 1H-NMR (CDCl 3 ): d=8.51(d,2H),8.26(d,2H),8.19(d,2H),7.94(d,4H),7.58(d,2H),7.51(d,4H),7.48(d,2H ),7.41(s,4H),7.35(d,4H),7.21(m,12H),7.14(m,8H),6.90(s,2H),1.36(s,18H),1.21(s,9H)

[0623] (7) Synthesis of Compound 49

[0624]

[0625] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 10-(9H-carbazole-3-yl)-10H-phenoxazine (1.74 g, 5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 49 (yellow solid, 3.1 g, 78%).

[0626] ESI-LCMS of compound 49: [M] + :C114 H 83 D 6 BN 6 O 2 .1590.5175

[0627] 1H-NMR (CDCl 3 ): d=8.55(d,2H),7.94(d,2H),7.54(d,2H),7.45(s,4H),7.35(m,6H),7.20(t,2H),7.1 1(m,4H),7.05(m,8H),6.96(d,4H),7.14(m,8H),6.90(s,2H),1.36(s,18H),1.21(s,9H)

[0628] (8) Synthesis of Compound 73

[0629] Synthesis of intermediate compound 73-a

[0630]

[0631] Under argon atmosphere, intermediate compound 1-b (2.4 g, 2.5 mmol), 10-(9H-carbazole-3-yl)-10H-phenoxazine (0.87 g, 2.5 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Intermediate Compound 73-a (yellow solid, 1.8 g, 56%).

[0632] ESI-LCMS of intermediate compound 73-a: [M] + :C 90 H 68 D 6 BCN 4 O.1278.6011

[0633] Synthesis of compound 73

[0634]

[0635] Under argon atmosphere, intermediate compound 73-a (1.8 g, 1.4 mmol), 2,7-diphenyl-9H-carbazole (0.45 g, 1.4 mmol), Pd 2 dba 3 (0.06 g, 0.12 mmol), tri-tert-butylphosphine (0.06 mL, 0.24 mmol) and sodium tert-butoxide (0.5 g, 5.1 mmol) were placed in a 1 L flask and dissolved in 100 mL of o-xylene, and then the reaction solution was stirred at about 100 ° C for about 12 hours. After cooling, water (1 L) and ethyl acetate (300 mL) were added and the organic layer was collected by extraction. Then, the obtained organic layer was washed with anhydrous MgSO 4 The filtered solution was dried and then filtered. The solvent was removed from the filtered solution under reduced pressure and the product was purified by using CH 2 Cl 2 The obtained solid was purified and separated by column chromatography using silica gel with hexane as a developing solvent to obtain Compound 73 (yellow solid, 1.6 g, 76%).

[0636] ESI-LCMS of compound 73: [M] + :C 114 H 84 D 6 BN 5 O.1278.6011

[0637] 1H-NMR (CDCl 3 ): d=8.62(d,2H),8.55(d,1H),8.31(d,2H),8.22(d,2H),7.94(d,2H),7.74(d,2H),7.60(m,4H),7.49(m,6H),7.45(s,4H) ),7.35(m,12H),7.31(s,1H),7.21(m,3H),7.11(t,1H),7.05(m,8H),6.96(s,2H),6.78(m,8H),1.44(s,18H),1.29(s,9H)

[0638] 1. Manufacturing and evaluation of light-emitting components

[0639] A light-emitting element according to one or more embodiments including a fused polycyclic compound according to one or more embodiments in an emission layer is manufactured using a method as described herein. The fused polycyclic compounds of Compound 1, Compound 7, Compound 11, Compound 31, Compound 45, Compound 46, Compound 49, and Compound 73 (which are example compounds described herein) are each used as a dopant material for the emission layer to manufacture light-emitting elements according to Examples 1 to 8. Comparative Example 1 and Comparative Example 2 each correspond to a light-emitting element manufactured using Comparative Example Compound A and Comparative Example Compound B, each as a dopant material for the emission layer.

[0640] Example compounds

[0641]

[0642] Comparative Example Compounds

[0643]

[0644] Manufacturing of light-emitting components

[0645] A layer of about 15 ohms per square centimeter (Ω / cm 2 )(1,200 Angstroms ) as a first electrode of the glass substrate (Corning product) cut into a size of about 50 millimeters (mm) × 50 mm × 0.7 mm, each using isopropyl alcohol and pure water to be subjected to ultrasonic cleaning for 5 minutes and ultraviolet irradiation for 30 minutes, and then exposed to ozone for cleaning. Then, the glass substrate was mounted on a vacuum deposition device. N, N'-di[(1-naphthyl)-N, N'-diphenyl]-1, 1'-biphenyl-4, 4'-diamine (NPD) was deposited on the first electrode to form a A hole injection layer having a thickness of , and compound H-1-19 is deposited on the hole injection layer to form a Then, CzSi is deposited on the hole transport layer to form a hole transport layer having a thickness of about Then, a host mixture in which the first host HT and the second host ET were mixed at a weight ratio of 1:1, a sensitizer AD-39, and an example compound or a comparative example compound were co-deposited at a weight ratio of 85:14:1 to form an electron blocking layer having a thickness of Thereafter, TSPO1 is deposited on the emission layer to form an emission layer having a thickness of A hole blocking layer with a thickness of 1000 mm was formed, and TPBi was then deposited on the hole blocking layer to form a Then, LiF is deposited on the electron transport layer to form a An electron injection layer having a thickness of A second electrode having a thickness of A covering layer with a thickness of to manufacture a light-emitting element. A compound for manufacturing a light-emitting element is disclosed. The light-emitting elements according to Examples 1 to 8 and Comparative Examples 1 and 2 were evaluated, and the results are listed in Table 2. In some embodiments, in the evaluation results of the examples and comparative examples, the brightness at 1000 candelas per square meter (cd / m 2 The driving voltage, luminous efficiency and luminescent color at a current density of 200 Å were measured. The time taken for the luminance to decrease to 95% of the initial luminance was measured as the lifetime (T95).

[0646] Relative lifetimes were calculated with respect to the lifetime of the light emitting element according to Comparative Example 1, and the results are listed respectively.

[0647]

[0648] Evaluation of light-emitting device characteristics

[0649] The element efficiency and element life of each of the light-emitting elements manufactured using Example Compound 1, Example Compound 7, Example Compound 11, Example Compound 31, Example Compound 45, Example Compound 46, Example Compound 49, and Example Compound 73 mentioned herein, and Comparative Example Compound A and Comparative Example Compound B were evaluated. The physical properties of the materials included in the light-emitting element are listed in Table 1. The energy of the singlet exciton (S1, eV), the energy of the triplet exciton (T1, eV), the energy difference between the singlet exciton and the triplet exciton (ΔE ST , eV), absorption wavelength (λ Abs , nm), emission wavelength (λ emi , nm), Stokes shift (nm). The energy difference between singlet exciton and triplet exciton (△E ST , eV), the smaller the reverse intersystem crossing rate, the greater the reverse intersystem crossing rate, and thus the characteristics of the light-emitting element can be improved. In some embodiments, the Stokes shift (nm) values ​​(each of which is the absorption wavelength (λ Abs , nm) and emission wavelength (λ emi The smaller the difference (nm), the smaller the deviation between the actual value and the user's expected color coordinates, and thus the light-emitting element can have improved characteristics.

[0650] Table 1

[0651]

[0652]

[0653] Referring to Table 1, each of the light-emitting elements according to Examples 1 to 8 has an energy difference between a singlet exciton and a triplet exciton of about 0.04 eV to about 0.10 eV. In contrast, the light-emitting elements according to Comparative Examples 1 and 2 have energy differences between singlet excitons and triplet excitons of about 0.14 eV and about 0.16 eV, respectively. For example, the light-emitting elements according to Comparative Examples 1 and 2 have energy differences between singlet excitons and triplet excitons (ΔE ST , eV) is about 1.4 to about 4 times larger than the energy difference between the singlet exciton and the triplet exciton (△E ST , eV).

[0654] Fig. 12A is the orbital distribution of the highest occupied molecular orbital (HOMO) of Comparative Example Compound A. Fig. 12B is the orbital distribution of the lowest unoccupied molecular orbital (LUMO) of Comparative Example Compound A. Fig.13A is the orbital distribution of HOMO of the fused polycyclic compound according to one or more embodiments of the present disclosure. Fig. 13B is the orbital distribution of LUMO of the fused polycyclic compound according to one or more embodiments of the present disclosure. Fig.13A and Fig. 13B The orbital distribution of HOMO and LUMO of compound 1 is shown. FIG. 12A to FIG. 13B , the orbital overlap between the HOMO and LUMO of Example Compound 1 substituted with a nitrogen-containing substituent as an electron-donating group is less than the orbital overlap between the HOMO and LUMO of Comparative Example Compound A. Therefore, Example Compound 1 is stable compared to Comparative Example Compound A. In the same manner, because each of Example Compound 7, Example Compound 11, Example Compound 31, Example Compound 45, Example Compound 46, Example Compound 49, and Example Compound 73 has a nitrogen-containing substituent as an electron-donating group substituted on the NBN core, the degree of overlap between the HOMO and LUMO is low compared to the degree of overlap between the HOMO and LUMO of Comparative Example Compound A and Comparative Example Compound B. Therefore, Example Compound 7, Example Compound 11, Example Compound 31, Example Compound 45, Example Compound 46, Example Compound 49, and Example Compound 73 are all relatively more stable, and thus the singlet exciton-triplet exciton associated with the example compounds all have a smaller energy difference (△E ST , eV) value. Therefore, the reverse intersystem crossing rate of the light-emitting elements according to Examples 1 to 8 is faster than the reverse intersystem crossing rate of the light-emitting elements according to Comparative Examples 1 and 2, and it is expected that the thermally activated delayed fluorescence light-emitting elements according to Examples 1 to 8 have improved efficiency and lifespan.

[0655] In some embodiments, the light-emitting elements according to Examples 1 to 8 each have a Stokes shift value (nm) of about 9 nm to about 11 nm, and the light-emitting elements according to Comparative Examples 1 and Comparative Examples 2 have Stokes shift values ​​(nm) of 13 nm and 14 nm, respectively. For example, the light-emitting elements according to Comparative Examples 1 and Comparative Examples 2 each have a Stokes shift value (nm) that is at least about 1.18 times to at most about 1.44 times greater than the light-emitting elements according to Examples 1 to 8. Therefore, because the light-emitting elements according to Examples 1 to 8 have a Stokes shift value (nm) that is smaller than the Stokes shift value (nm) of the light-emitting elements of Comparative Examples 1 and Comparative Examples 2, the deviation between the actual value and the color coordinates expected by the user is small, and thus the light-emitting element can have improved performance characteristics.

[0656] The light-emitting elements according to Examples 1 to 8 and Comparative Examples 1 and 2 were evaluated, and the results are listed in Table 2. In order to evaluate the characteristics of the light-emitting elements manufactured according to Examples 1 to 8 and Comparative Examples 1 and 2, the current at 10 mA / cm 2 ) at a current density of . Use a source meter (manufactured by Keithley Instrument Co., Ltd, 2400 series) to measure the driving voltage and current density of the light-emitting element, and measure the time it takes for the brightness to drop to 95% of the initial brightness as the lifespan. The lifespan is compared with the lifespan of the light-emitting element according to Comparative Example 1, and the results are listed as relative element lives, respectively. The greater the front efficiency, the more improved the efficiency of the light-emitting element, and the emission wavelength refers to the actual wavelength measured in the experiment, and the target value is 460nm. The smaller the difference with the value of 460nm, the better the color rendering characteristics. The larger the lifespan (T95) value, the longer the lifespan of the light-emitting element. The closer the value of the color coordinates is to 0.055, the better the color realization characteristics.

[0657] Table 2

[0658]

[0659] Referring to Table 2 here, the light-emitting elements according to Examples 1 to 8 and Comparative Examples 1 and 2 have no significant difference in driving voltage (V). In the case of front efficiency (cd / A / y), the light-emitting elements according to Examples 1 to 8 all have values ​​of about 471.5cd / A / y to about 561.8cd / A / y, while the light-emitting elements according to Comparative Examples 1 and 2 have values ​​of 455.1cd / A / y and 465.5cd / A / y, respectively. Compared with the light-emitting elements according to Comparative Examples 1 and 2, the light-emitting elements according to Examples 1 to 8 all have a difference of at least about 6cd / A / y and at most about 106.7cd / A / y. Therefore, because each of the light-emitting elements according to Examples 1 to 8 has a front efficiency value greater than the front efficiency value of the light-emitting elements according to Comparative Examples 1 and 2, the light-emitting elements according to Examples 1 to 8 have an efficiency characteristic that is superior or suitable to the efficiency characteristic of the light-emitting elements according to Comparative Examples 1 and 2. In the case of emission wavelength (nm) and color coordinates (CIE y), the light-emitting elements according to Examples 1 to 8 have an emission wavelength of about 461 nm to about 463 nm and a color coordinate value of about 0.053 to about 0.057, while the light-emitting element according to Comparative Example 1 has an emission wavelength of 462 nm and a color coordinate value of 0.053, and the light-emitting element according to Comparative Example 2 has an emission wavelength of 470 nm and a color coordinate value of 0.065. Therefore, compared with the light-emitting element according to Comparative Example 1, the light-emitting elements according to Examples 1 to 8 have similar levels of light-emitting characteristics, but compared with the light-emitting element according to Comparative Example 2, the light-emitting elements according to Examples 1 to 8 have a difference of at least about 7 nm and at most about 9 nm in terms of emission wavelength, and in the case of color coordinates, have a difference of at least about 0.008 and at most about 0.012. Therefore, compared with the light-emitting element according to Comparative Example 2, the light-emitting elements according to Examples 1 to 8 have excellent or suitable color rendering characteristics. In the case of lifetime (T95), the light emitting elements according to Examples 1 to 8 have lifetimes about 1.9 times to about 5.2 times greater than that of the light emitting element of Comparative Example 1, and have lifetimes about 1.46 times to about 4 times greater than that of the light emitting element of Comparative Example 2. Therefore, the light emitting elements according to Examples 1 to 8 have excellent or suitable lifetime characteristics compared with the lifetime characteristics of the light emitting elements according to Comparative Examples 1 and 2.

[0660] The fused polycyclic compound according to one or more embodiments includes a five-ring fused ring containing two nitrogen (N) atoms and one boron (B) atom as ring-forming atoms as a central structure (hereinafter, referred to as a NBN core). The NBN core according to one or more embodiments includes three substituted or unsubstituted benzene rings. In the NBN core of the fused polycyclic compound according to one or more embodiments, the fused ring substituents of the three rings are bonded to the carbon atom at the para position relative to the boron atom forming the ring. For example, in one or more embodiments, when a nitrogen-containing substituent including a diphenylamine group, a carbazolyl group, a phenoxazine group, a phenothiazine group, a phenoselenazine group, a phentellurazine group, a dimethylacridinyl group, a dimethyldibenzazepine group, a dimethyldibenzazepine group, a phenazine group, a benzoxazine group, a dihydroquinolinyl group and / or a difuranopyridinyl group is applied to the fused ring substituents of the three rings, the orbital overlap between the HOMO and LUMO of the molecule is reduced, thereby improving its stability. Therefore, the energy difference of the singlet exciton-triplet exciton formed by the molecule is reduced. Therefore, because the rate of reverse intersystem crossing (RISC) increases, the material stability increases, and thus the light-emitting element including the fused polycyclic compound in the emission layer has improved life characteristics and efficiency characteristics. The light-emitting element according to one or more embodiments includes the first compound according to one or more embodiments as a dopant material for a phosphorescent light-emitting element, for example, in the blue light wavelength region, high element efficiency can be achieved.

[0661] Comparative Example Compound A and Comparative Example Compound B respectively included in the light-emitting elements according to Comparative Example 1 and Comparative Example 2 include the NBN core structure according to one or more embodiments and a compound in which two carbazole groups are connected to the NBN core. In some embodiments, in Comparative Example Compound A according to Comparative Example 1, the carbazole group substituted with the NBN core is not substituted with a nitrogen-containing substituent, and in Comparative Example Compound B according to Comparative Example 2, the carbazole group substituted with the NBN core includes a cyano (CN) group as an electron-withdrawing substituent rather than an electron-donating substituent. It can be confirmed that when applied to a light-emitting element, the color realization characteristics, the luminous efficiency, and the element life characteristics are low compared to the light-emitting element according to the example compound.

[0662] The light emitting element according to one or more embodiments may exhibit improved element characteristics of high efficiency and / or long lifetime.

[0663] The display device according to one or more embodiments may exhibit improved emission characteristics with high efficiency and / or long lifespan.

[0664] The fused polycyclic compound according to one or more embodiments may be included in an emission layer of a light emitting element or a display device, thereby contributing to improving high efficiency and / or long life of the light emitting element and the display device.

[0665] Although the embodiments of the present disclosure have been described, it is understood that the present disclosure should not be limited to these embodiments, but a person skilled in the art may make one or more suitable changes and modifications within the spirit and scope of the present disclosure as claimed.

[0666] Therefore, the technical scope of the present disclosure should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims and their equivalents.

Claims

1. A light-emitting element, comprising: a first electrode; a second electrode, facing the first electrode; as well as an emission layer, located between the first electrode and the second electrode, Wherein, the emission layer includes a first compound represented by Formula 1: Formula 1 Among them, in formula 1, b and d are each independently an integer from 0 to 4, a, c, f, i and k are each independently an integer from 0 to 3, e, g, h and j are each independently an integer from 0 to 5, Q1 to Q3 and Q 51 To Q 56 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, Q4 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted silyl group, 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 optionally binds to an adjacent group to form a ring, Q6 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, a substituted or unsubstituted germyl group, or a substituted or unsubstituted silyl group, and Y1 and Y2 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and are optionally bonded to an adjacent group to form a ring.

2. The light-emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by Formula 1-1: Formula 1-1 Among them, in formula 1-1, l and d1 are each independently an integer from 0 to 3, m is an integer from 0 to 4, Q 11 and Q 201 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, Y3 and Y4 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and optionally bind to an adjacent group to form a ring, and Y1, Y2, Q1 to Q4, Q 51 To Q 56 , Q6, a to c and e to k are defined as in Formula 1.

3. The light-emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by at least one selected from Formula 2-1 to Formula 2-10: Formula 2-1 Formula 2-2 Formula 2-3 Formula 2-4 Formula 2-5 Formula 2-6 Formula 2-7 Formula 2-8 Formula 2-9 Formula 2-10 Among them, in Formula 2-1 to Formula 2-10, a101, a102 and a116 are each independently an integer from 0 to 5, a103, a104, a105, a108, a110, a111 and a112 are each independently an integer from 0 to 4, a106 is an integer from 0 to 3, a109, a114, a117, a118 and a119 are each independently an integer from 0 to 2, a107 and a113 are independently 0 or 1, Q 101 To Q 112 and Q 116 To Q 119 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, Q 113 To Q 115 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, X1, X4 and X5 are independently an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, X2 is a nitrogen atom, X3 is a carbon atom, a silicon atom or a germanium atom, and Q1 to Q4, Q 51 To Q 56 , Q6 and a to k are defined as in Formula 1.

4. The light-emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by Formula 3: Formula 3 Among them, in formula 3, Y1, Y2, Q1 to Q4, Q 51 To Q 56 , Q6, a and c to k are defined as in Formula 1.

5. The light emitting element according to claim 4, wherein Q2 is represented by any one selected from Formula 3-1 to Formula 3-5: Formula 3-1 Formula 3-2 Formula 3-3 Formula 3-4 Formula 3-5 Wherein, in formula 3-1, D is a deuterium atom, In Formula 3-3 to Formula 3-5, Q 21 To Q 25 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, a21 to a23 are each independently an integer from 0 to 5, and a24 and a25 are each independently an integer from 0 to 4, and In Formula 3-1 to Formula 3-5, -* indicates the position connected to Formula 3.

6. The light-emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by Formula 4 or Formula 5: Formula 4 Formula 5 Among them, in formula 4 and formula 5, Q 41 and Q 42 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and Y1, Y2, Q1 to Q3, Q 51 To Q 56 , Q6, a to c and e to k are as defined in Formula 1.

7. The light-emitting element according to claim 6, wherein In formula 4, Q 41 It is expressed by formula 4-1 or formula 4-2: Formula 4-1 Formula 4-2 Among them, in formula 4-1 and formula 4-2, a411 and a412 are each independently an integer from 0 to 4, a413 is an integer from 0 to 5, Q 411 , Q 412 and Q 413 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, and -* is the location connected to formula 4.

8. The light emitting element according to claim 6, wherein In formula 5, Q 42 It is expressed by formula 4-3 or formula 4-4: Formula 4-3 Formula 4-4 Among them, in formula 4-3 and formula 4-4, a424 is an integer from 0 to 5, Q 421 To Q 423 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, Q 424 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or a substituted or unsubstituted amine group, and is optionally bonded to an adjacent group to form a ring, and -* is the location connected to formula 5.

9. The light-emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by Formula 6: Formula 6 Among them, in formula 6, Y1, Y2, Q1 to Q4, Q 51 To Q 56 , Q6 and a to j are defined as in Formula 1.

10. The light emitting element according to claim 9, wherein Q6 is represented by any one selected from Formula 6-1 to Formula 6-6: Formula 6-1 Formula 6-2 Formula 6-3 Formula 6-4 Formula 6-5 Formula 6-6 Among them, in Formula 6-1 to Formula 6-6, X6 is a carbon atom, a silicon atom or a germanium atom, X7 is an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, X8 is a nitrogen atom, a604 is an integer from 0 to 5, a605 is an integer from 0 to 3, a606 is an integer from 0 to 4, a608 is an integer from 0 to 9, a609 is an integer from 0 to 11, Q 601 To Q 606 , Q 608 and Q 609 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, Q 607 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 is optionally bonded to an adjacent group to form a ring, and -* is the position connected to formula 6.

11. The light emitting element according to claim 1, wherein The first compound represented by Formula 1 is represented by at least one compound selected from compound group 1: Compound Group 1 12. The light emitting element according to claim 1, wherein The light emitting element further comprises: a hole transport region located between the first electrode and the emission layer; and The electron transport region is located between the emission layer and the second electrode.

13. The light emitting element according to claim 1, wherein The emission layer is configured to emit delayed fluorescence.

14. The light emitting element according to claim 1, wherein The emission layer is configured to emit light having an emission center wavelength of 430 nm to 490 nm.

15. The light emitting element according to claim 1, wherein The emission layer further includes at least one selected from a second compound represented by Formula HT-1 and a third compound represented by Formula ET-1: Formula HT-1 Among them, in formula HT-1, A1 to A8 are independently N or CR 51 , L1 is a direct bond, 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, Y a It is a direct key, CR 52 R 53 or SiR 54 R 55 , 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, R 51 To R 55 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, and are optionally bonded to an adjacent group to form a ring; Formula ET-1 Among them, in formula ET-1, At least one selected from X1 to X3 is N, and any remaining X1 to X3 are CR 56 , R 56 is 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 60 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring carbon atoms, b1 to b3 are each independently an integer from 0 to 10, L2 to L4 are each independently a direct bond, 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, If b1 to b3 are all integers of 2 or more, L2 to L4 are all independently 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, and Ar2 to Ar4 are each independently 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.

16. The light emitting element according to claim 1, wherein The light-emitting element further includes a fourth compound represented by formula D-1: Formula D-1 Wherein, in formula D-1, Q1 to Q4 are independently C or N, C1 to C4 are each independently a substituted or unsubstituted hydrocarbon ring having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic ring having 2 to 30 ring carbon atoms, L 11 To L 13 are independently direct bonds, *-O—*-S—* a substituted or unsubstituted divalent alkyl group having 1 to 20 carbon atoms, 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, b1 to b3 are independently 0 or 1, R 61 To R 66 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, and are optionally bonded to an adjacent group to form a ring, and d1 to d4 are each independently an integer from 0 to 4.

17. A display device, comprising: Base layer; A circuit layer, located on the substrate layer; as well as A display element layer is located on the circuit layer and includes a light emitting element, The light emitting element includes: a first electrode; a second electrode located on the first electrode; and an emission layer located between the first electrode and the second electrode. Wherein, the emission layer includes a first compound represented by Formula 1, The emission layer further comprises at least one selected from the group consisting of a second compound represented by formula HT-1, a third compound represented by formula ET-1, and a fourth compound represented by formula D-1: Formula 1 Among them, in formula 1, b and d are each independently an integer from 0 to 4, a, c, f, i and k are each independently an integer from 0 to 3, e, g, h and j are each independently an integer from 0 to 5, Q1 to Q3 and Q 51 To Q 56 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, Q4 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted silyl group, 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 optionally binds to an adjacent group to form a ring, Q6 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, a substituted or unsubstituted germyl group, or a substituted or unsubstituted silyl group, and Y1 and Y2 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and optionally bind to an adjacent group to form a ring; Formula HT-1 Among them, in formula HT-1, A1 to A8 are independently N or CR 51 , L1 is a direct bond, 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, Y a It is a direct key, CR 52 R 53 or SiR 54 R 55 , 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 R 51 To R 55 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring-forming carbon atoms, and are optionally bonded to an adjacent group to form a ring; Formula ET-1 Among them, in formula ET-1, At least one selected from X1 to X3 is N, and any remaining X1 to X3 are CR 56 , R 56 is 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 60 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring carbon atoms, b1 to b3 are each independently an integer from 0 to 10, Ar2 to Ar4 are each independently 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, and L2 to L4 are each independently a direct bond, 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; Formula D-1 Wherein, Q1 to Q4 are independently C or N, C1 to C4 are each independently a substituted or unsubstituted hydrocarbon ring having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic ring having 2 to 30 ring carbon atoms, L 11 To L 13 are independently direct bonds, *-O-*, *-S-*, a substituted or unsubstituted divalent alkyl group having 1 to 20 carbon atoms, 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, b1 to b3 are independently 0 or 1, R 61 To R 66 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 60 ring carbon atoms, and d1 to d4 are each independently an integer from 0 to 4.

18. The display device according to claim 17, further comprising a light control layer, wherein the light control layer is disposed on the display element layer, wherein: The light management layer includes quantum dots.

19. A fused polycyclic compound, the fused polycyclic compound being represented by Formula 1: Formula 1 in, In formula 1, b and d are each independently an integer from 0 to 4, a, c, f, i and k are each independently an integer from 0 to 3, e, g, h and j are each independently an integer from 0 to 5, Q1 to Q3 and Q 51 To Q 56 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, Q4 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted silyl group, 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 optionally binds to an adjacent group to form a ring, Q6 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, a substituted or unsubstituted germyl group, or a substituted or unsubstituted silyl group, and Y1 and Y2 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 2 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, and are optionally bonded to an adjacent group to form a ring.

20. The fused polycyclic compound according to claim 19, in, The fused polycyclic compound represented by Formula 1 is represented by Formula 2-1 to Formula 2-10: Formula 2-1 Formula 2-2 Formula 2-3 Formula 2-4 Formula 2-5 Formula 2-6 Formula 2-7 Formula 2-8 Formula 2-9 Formula 2-10 Among them, in Formula 2-1 to Formula 2-10, a101, a102 and a116 are each independently an integer from 0 to 5, a103, a104, a105, a108, a110, a111 and a112 are each independently an integer from 0 to 4, a106 is an integer from 0 to 3, a109, a114, a117, a118 and a119 are each independently an integer from 0 to 2, a107 and a113 are independently 0 or 1, Q 101 To Q 112 and Q 116 To Q 119 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, or a substituted or unsubstituted amine group, and are optionally bonded to an adjacent group to form a ring, Q 113 To Q 115 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 2 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 are optionally bonded to an adjacent group to form a ring, X1, X4 and X5 are independently an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom, X2 is a nitrogen atom, X3 is a carbon atom, a silicon atom or a germanium atom, and Q1 to Q4, Q 51 To Q 56 , Q6 and a to k are defined as in Formula 1.

21. The fused polycyclic compound according to claim 19, wherein The condensed polycyclic compound represented by Formula 1 is represented by at least one compound selected from Compound Group 1: Compound Group 1

Images