Light-emitting element, fused polycyclic compound therefor, and display device including same

Abstract

The present application provides a light-emitting element including a first electrode, a second electrode provided on the first electrode, and an emission layer provided between the first electrode and the second electrode and including a first compound represented by the following Formula 1: Formula 1 # imgabs0 #, a fused polycyclic compound for the light-emitting element, and a display device including the light-emitting element.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0107437 filed on August 17, 2023, and Korean Patent Application No. 10-2024-0023702 filed on February 19, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure herein relates to a light emitting element, a fused polycyclic compound for a light emitting element, and a display device including the light emitting element. Background Art

[0004] Recently, development of organic electroluminescent display devices, for example, as image display devices, is being actively carried out. Unlike liquid crystal display devices and the like, organic electroluminescent display devices are so-called "self-luminous" display devices, in which holes and electrons injected from a first electrode and a second electrode, respectively, are recombined in an emission layer of the display device. Subsequently, a light-emitting material including an organic compound in the emission layer (e.g., a light-emitting layer) emits light to implement display (e.g., of an image).

[0005] The application of organic electroluminescent elements to display devices requires or there is a desire or demand for organic electroluminescent elements having relatively low driving voltage, high luminous efficiency and / or long service life, etc. Therefore, there is a need or desire for the development of materials for organic electroluminescent elements that can stably obtain these desired characteristics, and such development is ongoing.

[0006] In recent years, two research areas being conducted to implement efficient organic electroluminescent elements include technologies related to phosphorescent emission utilizing triplet energy levels and fluorescent emission utilizing triplet-triplet annihilation (TTA) (e.g., where singlet excitons are generated by collision of triplet excitons). Another research area being developed is thermally activated delayed fluorescence (TADF) materials utilizing the delayed fluorescence phenomenon. Summary of the invention

[0007] One or more aspects of the embodiments of the present disclosure are directed to a light emitting element in which light emitting efficiency and element service life (ie, service life) are improved.

[0008] One or more aspects of the embodiments of the present disclosure relate to a condensed polycyclic compound capable of improving the luminous efficiency of a light-emitting element and the lifespan of the element.

[0009] One or more aspects of embodiments of the present disclosure are directed to a display device including a light emitting element in which light emitting efficiency and lifetime are improved, thereby having excellent or appropriate display quality.

[0010] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the embodiments presented in the disclosure.

[0011] One or more embodiments of the present disclosure provide a light-emitting element including a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode and including a first compound (ie, a fused polycyclic compound) represented by Formula 1:

[0012] Formula 1

[0013]

[0014] In formula 1, X 1 Can be NR 17 , O, S, Se or Te, X 2 Can be O, S or Se, R 1 To R 7 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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, R 8 To R 16 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, R 17 Ar may be 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 / or may be bonded to an adjacent group to form a ring. 1 and Ar 2 may each 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, and Ar 1 and Ar 2 At least one of can be represented by formula S:

[0015] Formula S

[0016]

[0017] In formula S, Z 1 To Z 3 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, n1 may be an integer selected from 0 to 3, n2 and n3 may each independently be an integer selected from 0 to 5, and -* may be a position connected to Formula 1.

[0018] In one or more embodiments, in Formula 1, R 1 To R 7 At least one of may be a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or may be represented by any one selected from Formula A-1 to Formula A-4:

[0019] Formula A-1

[0020]

[0021] Formula A-2

[0022]

[0023] Formula A-3

[0024]

[0025] Formula A-4

[0026]

[0027] In Formula A-1 to Formula A-4, Z a Can be NR a10 ,O,S or Se,R a1 To R a10Each of them may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, m1 and m6 to m8 may each be independently an integer selected from 0 to 5, m2, m3, m5 and m9 may each be independently an integer selected from 0 to 4, m4 may be an integer selected from 0 to 3, and -* is a position connected to Formula 1.

[0028] In one or more embodiments, in Formula 1, Ar 1 and Ar 2 At least one of the formula S may be represented by the formula S, and the other (e.g., any remaining Ar 1 or Ar 2 ) can be represented by at least one (for example, any) selected from Formula B-1 to Formula B-3:

[0029] Formula B-1

[0030]

[0031] Formula B-2

[0032]

[0033] Formula B-3

[0034]

[0035] In Formula B-1 to Formula B-3, Z b Can be NR b8 ,O,S or Se,R b1 To R b7 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, R b8It may be 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, m11, m14 and m15 may each independently be an integer selected from 0 to 5, m12 and m17 may each independently be an integer selected from 0 to 4, m13 and m16 may each independently be an integer selected from 0 to 3, and -* may be a position connected to Formula 1.

[0036] In one or more embodiments, the first compound represented by Formula 1 may be represented by Formula 2-1 or Formula 2-2:

[0037] Formula 2-1

[0038]

[0039] Formula 2-2

[0040]

[0041] In formula 2-1 and formula 2-2, A 1 and A 2 can be each independently represented by any one selected from Formula A-1 to Formula A-4, and B 1 The alkyl group may be a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.

[0042] Formula A-1

[0043]

[0044] Formula A-2

[0045]

[0046] Formula A-3

[0047]

[0048] Formula A-4

[0049]

[0050] In Formula A-1 to Formula A-4, Z a Can be NR a10 ,O,S or Se,R a1 To R a10each independently may be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded with an adjacent group to form a ring, m1 and m6 to m8 may each independently be an integer selected from 0 to 5, m2, m3, m5 and m9 may each independently be an integer selected from 0 to 4, m4 may be an integer selected from 0 to 3, and -* is a position to be connected.

[0051] In Formula 2-1 and Formula 2-2, the definition in Formula 1 is applicable to X 1 , X 2 ,Ar 1 ,Ar 2 , R 1 To R 5 and R 7 To R 16 .

[0052] In one or more embodiments, the first compound represented by Formula 1 may be represented by any one selected from Formula 3-1 to Formula 3-3:

[0053] Formula 3-1

[0054]

[0055] Formula 3-2

[0056]

[0057] Formula 3-3

[0058]

[0059] In Formula 3-1 to Formula 3-3, Z 4 To Z 6 Each may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, n4 may be an integer selected from 0 to 3, and n5 and n6 may each independently be an integer selected from 0 to 5.

[0060] In Formula 3-1 to Formula 3-3, the definitions in Formula 1 and Formula S are applicable to X 1 , X 2 ,Ar 1 ,Ar 2 , R 1 To R 16 , Z 1 To Z 3 and n1 to n3.

[0061] In one or more embodiments, the first compound represented by Formula 1 may be represented by any one selected from Formula 4-1 to Formula 4-5:

[0062] Formula 4-1

[0063]

[0064] Formula 4-2

[0065]

[0066] Formula 4-3

[0067]

[0068] Formula 4-4

[0069]

[0070] Formula 4-5

[0071]

[0072] In equations 4-1 to 4-5, C 1 To C 8 can each independently be a hydrogen atom or a deuterium atom, and D 1 , D 2 、E 1 and E 2 Each may be independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or represented by any one selected from Formula C-1 to Formula C-5:

[0073] Formula C-1

[0074]

[0075] Formula C-2

[0076]

[0077] Formula C-3

[0078]

[0079] Formula C-4

[0080]

[0081] Formula C-5

[0082]

[0083] In Formula C-1 to Formula C-5, Z c Can be NR c11 , O, S or Se, M can be Si or Ge, R c1 To R c7 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, R c8 To R c11 Each 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, m21, m24 and m25 may each be independently an integer selected from 0 to 5, m22, m23 and m27 may each be independently an integer selected from 0 to 4, m26 may be an integer selected from 0 to 3, and -* is a position to be connected.

[0084] In Formula 4-1 to Formula 4-5, the definition in Formula 1 is applicable to X 1 , X 2 ,Ar 1 ,Ar 2 and R 1 To R 16 .

[0085] In one or more embodiments, the first compound represented by Formula 1 may be represented by any one selected from Formula 5-1 to Formula 5-3:

[0086] Formula 5-1

[0087]

[0088] Formula 5-2

[0089]

[0090] Formula 5-3

[0091]

[0092] In Formula 5-1 to Formula 5-3, R 21 To R 24 each independently may be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, a1 and a2 may each independently be an integer selected from 0 to 4, and a3 and a4 may each independently be an integer selected from 0 to 5.

[0093] In equations 5-1 to 5-3, the definition in equation 1 is applicable to X 1 , X 2 ,Ar 1 ,Ar 2 and R 1 To R 16 .

[0094] In one or more embodiments, the first compound represented by Formula 1 may be represented by any one selected from Formula 6-1 to Formula 6-3:

[0095] Formula 6-1

[0096]

[0097] Formula 6-2

[0098]

[0099] Formula 6-3

[0100]

[0101] In equations 6-1 to 6-3, R 21 To R 24may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may bond with an adjacent group to form a ring, Z 4 To Z 6 each independently may be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded with an adjacent group to form a ring, a1 and a2 may each independently be an integer selected from 0 to 4, a3, a4, n5 and n6 may each independently be an integer selected from 0 to 5, n4 may be an integer selected from 0 to 3, and Q 1 To Q 8 At least one of the groups may be represented by any one selected from Formula C-1 to Formula C-5, and the remaining groups (e.g., selected from Q 1 To Q 8 Any remaining groups in ) may be hydrogen atoms or deuterium atoms.

[0102] Formula C-1

[0103]

[0104] Formula C-2

[0105]

[0106] Formula C-3

[0107]

[0108] Formula C-4

[0109]

[0110] Formula C-5

[0111]

[0112] In Formula C-1 to Formula C-5, Z c Can be NR c11, O, S or Se, M can be Si or Ge, R c1 To R c7 may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or may be bonded to an adjacent group to form a ring, R c8 To R c11 Each 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, m21, m24 and m25 may each be independently an integer selected from 0 to 5, m22, m23 and m27 may each be independently an integer selected from 0 to 4, m26 may be an integer selected from 0 to 3, and -* is a position to be connected.

[0113] In Formula 6-1 to Formula 6-3, the definitions in Formula 1 and Formula S are applicable to X 1 , R 1 To R 8 , Z 1 To Z 3 and n1 to n3.

[0114] In one or more embodiments, selected from R 1 To R 16 At least one of may be selected from Substituent Group 1 (for example, each may be any one selected from Substituent Group 1):

[0115] Substituent Group 1

[0116]

[0117]

[0118]

[0119]

[0120]

[0121]

[0122]

[0123]

[0124]

[0125]

[0126] In substituent group 1, -* is a position for bonding to Formula 1.

[0127] In one or more embodiments, the emission layer 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:

[0128] Formula HT-1

[0129]

[0130] In formula HT-1, M 1 To M 8 Can be N or CR independently 51 , L 1 is a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms, Y a For direct connection, CR 52 R 53 or SiR 54 R 55 ,Ar a 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 Each 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 / or may bond with an adjacent group to form a ring.

[0131] Formula ET-1

[0132]

[0133] In formula ET-1, Z a To Z c At least one of the groups may be N, and the remaining groups (e.g., selected from Z a To Z cAny remaining groups in ) may be (for example, may each be) 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 may each independently be an integer selected from 0 to 10, Ar b To Ar d 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 aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and L 2 To L 4 Each may independently be a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0134] Formula D-1

[0135]

[0136] In formula D-1, Q 1 To Q 4 may be each independently C or N, C1 to C4 may each independently be a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms, L 11 To L 13 Can be directly connected, *-O-*, *-S-*, A substituted or unsubstituted alkylene 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, wherein -* refers to a portion connected to C1 to C4, b11 to b13 may each independently be 0 or 1, and R 61 To R 66 Each of d1 to d4 may be 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, or combine with an adjacent group to form a ring, and d1 to d4 may be independently an integer selected from 0 to 4.

[0137] In one or more embodiments of the present disclosure, a display device includes a substrate layer, a circuit layer arranged on the substrate layer, and a display element layer arranged on the circuit layer and including a light-emitting element, wherein the light-emitting element includes a first electrode, a second electrode arranged on the first electrode, and an emission layer arranged between the first electrode and the second electrode and including a first compound represented by Formula 1.

[0138] In one or more embodiments, the light emitting element may further include a capping layer disposed on the second electrode, and the capping layer may have a refractive index of about 1.6 or more with respect to light in a wavelength range of about 550 nanometers (nm) to about 660 nm.

[0139] In one or more embodiments, the display device may further include a light control layer arranged on the display element layer and including quantum dots, wherein the light emitting element may be configured to emit a first color light, and the light control layer may include: a first light control portion including a first quantum dot, the first quantum dot being configured to convert the first color light into a second color light in a wavelength region longer than the wavelength region of the first color light (i.e., having a wavelength region longer than the wavelength region of the first color light); a second light control portion including a second quantum dot, the second quantum dot being configured to convert the second color light into a third color light in a wavelength region longer than the wavelength region of the first color light (i.e., having a wavelength region longer than the wavelength region of the first color light); and a third light control portion configured to transmit the first color light.

[0140] In one or more embodiments, the display device may further include a color filter layer arranged on the light control layer, wherein the color filter layer may include a first filter configured to transmit a second color light, a second filter configured to transmit a third color light, and a third filter configured to transmit the first color light.

[0141] In one or more embodiments of the present disclosure, the fused polycyclic compound is represented by Formula 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0142] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate example embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings:

[0143] Figure 1 is a plan view of a display device according to one or more embodiments of the present disclosure;

[0144] Figure 2 is a cross-sectional view of a display device according to one or more embodiments of the present disclosure;

[0145] Figure 3A cross-sectional view schematically illustrating a light emitting element according to one or more embodiments of the present disclosure;

[0146] Figure 4 A cross-sectional view schematically illustrating a light emitting element according to one or more embodiments of the present disclosure;

[0147] Figure 5 A cross-sectional view schematically illustrating a light emitting element according to one or more embodiments of the present disclosure;

[0148] Figure 6 A cross-sectional view schematically illustrating a light emitting element according to one or more embodiments of the present disclosure;

[0149] Figure 7 and Figure 8 Each is a cross-sectional view of a display device according to one or more embodiments of the present disclosure;

[0150] Fig. 9 A cross-sectional view for explaining a display device according to one or more embodiments of the present disclosure;

[0151] Fig.10 A cross-sectional view for explaining a display device according to one or more embodiments of the present disclosure; and

[0152] Fig.11 A perspective view for explaining a vehicle in which a display device is arranged according to one or more embodiments. DETAILED DESCRIPTION

[0153] 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 this is not intended to limit the present disclosure to the specific form disclosed, but rather, it is intended to cover all modifications, equivalents and alternatives that fall within the spirit and scope of the present disclosure.

[0154] When explaining each accompanying drawing, the same reference numerals are used to refer to the same elements. In the attached drawings, for the clarity of the present disclosure, the size of each structure is explained in an amplified manner. It will be understood that although the terms "first" and / or "second" etc. can be used in this article to describe one or more appropriate components, these components should not be limited by these terms. These terms are only used to distinguish one component from another component. For example, without departing from the scope of the example embodiments of the present disclosure, the first component may be referred to as the second component, and similarly, the second component may be referred to as the first component. As used herein, unless the context clearly indicates otherwise, the singular forms "a (a)", "an (an)" and "said" are intended to also include plural forms.

[0155] In the present application, it will be understood that the terms “include,” “includes,” “including,” “comprise,” “comprises,” “comprising,” “has,” “having” and / or “have” etc. indicate the presence of features, numbers, steps, operations, components, parts, or a combination thereof disclosed in the specification, but do not exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or a combination thereof.

[0156] 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 portion of" another layer, film, region or plate, it may not only be "directly on" the layer, film, region or plate, but also there may be intervening layers, films, regions or plates. In contrast, when a layer, film, region or plate is referred to as being "below" another layer, film, region or plate or "in the lower portion of" another layer, film, region or plate, it may not only be directly below the layer, film, region or plate, but also there may be intervening layers, films, regions or plates. In one or more embodiments, it will be understood that when a part is referred to as being "on" another part, it may be arranged above the other part, or it may also be arranged below the other part.

[0157] For example, for ease of description, terms such as "below", "above" and / or "on", etc., are used herein to describe the relationship between one element and another element as illustrated in the accompanying drawings. These terms are relative concepts and are described based on the directions indicated in the accompanying drawings. It will be understood that these terms have relative concepts and are described based on the orientations depicted in the accompanying drawings. It will be understood that spatially relative terms are intended to encompass different orientations of devices in use or operation other than the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, the element described as "below" other elements or features will then be oriented "above" or "on" other elements or features. Therefore, the term "below" can encompass both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used in this article should be interpreted accordingly.

[0158] As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively.

[0159] As used herein, expressions such as "at least one of," "one of," and "selected from," when preceding / following a list of elements, modify the entire list of elements, rather than the individual elements of the list. For example, the expressions "at least one of a through c" and "at least one of a, b, and c" may indicate only a, only b, only c, both a and b (e.g., a and b simultaneously), both a and c (e.g., a and c simultaneously), both b and c (e.g., b and c simultaneously), all of a, b, and c, or variations thereof.

[0160] The term "and / or" includes all combinations of one or more of the associated listed elements.

[0161] As used herein, the term "may" will be understood to refer to "one or more embodiments of the present disclosure," some of which include the described elements, while some of which exclude the elements and / or include optional elements. Similarly, optional language such as "or" refers to "one or more embodiments of the present disclosure" that each include the corresponding enumerated items.

[0162] Unless otherwise defined, all terms (including chemical terms, technical terms and scientific terms) used in this article have the same meaning as those commonly understood by ordinary technicians in the field to which the present disclosure belongs. It will be further understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0163] As used herein, the phrase "consisting essentially of" means that any additional components will not substantially affect the chemical, physical, optical, or electrical properties of the target moiety.

[0164] As used herein, the phrase “on a plane” or “plan view” means observing a target portion from the top, and the phrase “in cross section” means observing a cross section formed by vertically cutting the target portion from one side.

[0165] In the present disclosure, "does not include one or any 'component'", "excludes one or any 'component'" and / or "does not contain a 'component'" and the like means that the 'component' is not added, selected or used as a component in the composition, but due to other impurities and / or external factors, the 'component' may still be included in an appropriate amount.

[0166] definition

[0167] In the specification, the term "substituted or unsubstituted" may refer to a group that is unsubstituted or substituted by (e.g., selected from) at least one substituent in the group including (e.g., consisting of) deuterium atoms, halogen atoms, cyano groups, nitro groups, amino groups, amine groups, silyl groups, oxy groups, sulfenyl groups, sulfinyl groups, sulfonyl groups, carbonyl groups, boron groups, phosphine oxide groups, phosphine sulfide groups, alkyl groups, alkenyl groups, alkynyl groups, hydrocarbon ring groups, aryl groups, and heterocyclic groups. In one or more embodiments, each of the substituents exemplified herein may be substituted or unsubstituted. For example, biphenyl groups may be interpreted as aryl groups or phenyl groups substituted by phenyl groups.

[0168] In the specification, the phrase "bonded to an adjacent group to form a ring" may refer to a group bonding to an adjacent group to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted heterocycle. Hydrocarbon rings include aliphatic hydrocarbon rings and aromatic hydrocarbon rings. Heterocycles include aliphatic heterocycles and aromatic heterocycles. Hydrocarbon rings and heterocycles may be monocyclic or polycyclic. In one or more embodiments, the ring formed by bonding to each other may be connected to another ring to form a spiro structure.

[0169] In the specification, the term "adjacent group" may refer to a substituent that replaces an atom directly connected to the atom substituted by the corresponding substituent, another substituent that replaces the atom substituted by the 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 one or more embodiments, the two methyl groups in 4,5-dimethylphenanthrene may be interpreted as "adjacent groups" to each other.

[0170] In the specification, examples of the halogen atom may include a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.

[0171] In the specification, the alkyl group may be linear or branched. The number of carbon atoms in the alkyl group is 1 to 50, 1 to 30, 1 to 20, 1 to 10, or 1 to 6. Examples of the alkyl group may include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl, 3,3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, n-heptyl, 1-methylheptyl, 2,2-dimethylheptyl, 2-ethylheptyl, 2-butylheptyl, n-octyl, tert-octyl, 2-ethyloctyl, 2-butyloctyl, 2-hexyloctyl, 3,7-dimethyloctyl, n-nonyl, n-decyl, adamantyl, 2-ethyldecyl, 2-butyldecyl, 2-hexyldecyl, 2-octyldecyl, n-undecyl, n-Dodecyl, 2-ethyldodecyl, 2-butyldodecyl, 2-hexyldodecyl, 2-octyldodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, 2-ethylhexadecyl, 2-butylhexadecyl, 2-hexylhexadecyl, 2-octylhexadecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, 2-ethyleicosyl, 2-butyleicosyl, 2-hexyleicosyl, 2-octyleicosyl, n-heonicosyl, n-docosyl, n-tricosyl, n-tetracosyl, n-pentacosyl, n-hexacosyl, n-heptacosyl, n-octacosyl, n-nonacosyl and / or n-triacontyl, etc., but embodiments of the present disclosure are not limited thereto.

[0172] In the specification, cycloalkyl may refer to a cyclic alkyl. The number of carbon atoms 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.

[0173] In the specification, alkenyl refers to a hydrocarbon group including at least one carbon-carbon double bond in the middle or at the end of an alkyl group having 2 or more carbon atoms. The alkenyl group may be straight chain or branched. The number of carbon atoms in the alkenyl group is not specifically limited, but is 2 to 30, 2 to 20 or 2 to 10. Examples of alkenyl groups may include vinyl, 1-butenyl, 1-pentenyl, 1,3-butadienyl, styryl and / or styrylvinyl, etc., but embodiments of the present disclosure are not limited thereto.

[0174] In the specification, alkynyl refers to a hydrocarbon group including at least one carbon-carbon triple bond in the middle or at the end of an alkyl group having 2 or more carbon atoms. The alkynyl group may be straight chain or branched. Although the number of carbon atoms is not specifically 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.

[0175] 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 30 or 5 to 20 ring-forming carbon atoms.

[0176] In the specification, aryl refers to any functional group or substituent derived from an aromatic hydrocarbon ring. The aryl may be a monocyclic aryl or a polycyclic aryl. The number of ring-forming carbon atoms in the aryl may be 6 to 60, 6 to 50, 6 to 40, 6 to 30, 6 to 20 or 6 to 15. Examples of aryl may include phenyl, naphthyl, fluorenyl, anthracenyl, phenanthrenyl, biphenyl, terphenyl, quaterphenyl, pentaphenyl, hexaphenyl, triphenylene, pyrenyl, benzofluoranthenyl and / or 1,2-triphenylenyl, etc., but embodiments of the present disclosure are not limited thereto.

[0177] In the specification, the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure. Examples of the substituted fluorenyl group are as follows. However, the embodiments of the present disclosure are not limited thereto.

[0178]

[0179] 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 groups and aromatic heterocyclic groups may be monocyclic or polycyclic.

[0180] In the specification, the heterocyclic group may contain at least one of B, O, N, P, Si, S and Se 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 60, 2 to 50, 2 to 40, 2 to 30, 2 to 20 or 2 to 10.

[0181] In the specification, the aliphatic heterocyclic group may include at least one of B, O, N, P, Si, S and Se as a heteroatom. The number of ring-forming carbon atoms in the aliphatic heterocyclic group may be 2 to 30, 2 to 20 or 2 to 10. Examples of the aliphatic heterocyclic group may include an oxirane group, a thiirane group, a pyrrolidinyl group, a piperidinyl group, a tetrahydrofuranyl group, a tetrahydrothienyl group, a thianyl group, a tetrahydropyranyl group and / or a 1,4-dioxanyl group, etc., but embodiments of the present disclosure are not limited thereto.

[0182] In the specification, the heteroaryl group may contain at least one of B, O, N, P, Si, S and Se as a heteroatom. When the heteroaryl group includes 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 60, 2 to 50, 2 to 40, 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.

[0183] In the specification, the description of the aryl group can be applied to the arylene group, except that the arylene group is a divalent group. The description of the heteroaryl group can be applied to the heteroarylene group, except that the heteroarylene group is a divalent group.

[0184] In the specification, silyl includes alkylsilyl and arylsilyl. The alkyl in the alkylsilyl may be linear, branched or cyclic. The number of carbon atoms in the alkylsilyl is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylsilyl is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of silyl may include trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, vinyldimethylsilyl, propyldimethylsilyl, triphenylsilyl, diphenylsilyl and / or phenylsilyl, etc., but embodiments of the present disclosure are not limited thereto.

[0185] In the specification, the germanium group includes an alkylgermanium group and an arylgermanium group. The number of carbon atoms in the alkylgermanium group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylgermanium group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of the germanium group may include a trimethylgermanium group, a triethylgermanium group, a tert-butyldimethylgermanium group, a vinyldimethylgermanium group, a propyldimethylgermanium group, a triphenylgermanium group, a tert-biphenylgermanium group, a diphenylgermanium group and / or a phenylgermanium group, etc., but embodiments of the present disclosure are not limited thereto.

[0186] In the specification, the number of carbon atoms in the carbonyl group is not particularly limited, but may be 1 to 40, 1 to 30, or 1 to 20. For example, the carbonyl group may have the following structure, but embodiments of the present disclosure are not limited thereto.

[0187]

[0188] 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.

[0189] In the specification, the thio group may include an alkylthio group and an arylthio group. The thio group may refer to a sulfur atom bonded to an alkyl group or an aryl group as defined herein. The alkyl group in the alkylthio group may be linear, branched or cyclic. The number of carbon atoms in the alkylthio group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylthio group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of thio groups may include methylthio, ethylthio, propylthio, pentylthio, hexylthio, octylthio, dodecylthio, cyclopentylthio, cyclohexylthio, phenylthio and / or naphthylthio, etc., but embodiments of the present disclosure are not limited thereto.

[0190] In the specification, an oxy group may refer to an oxygen atom bonded to an alkyl or aryl group as defined herein. The oxy group may include an alkoxy group and an aryloxy group. The alkoxy group may be linear, branched or cyclic. The number of carbon atoms in the alkoxy group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the aryloxy group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of oxy groups may include methoxy, ethoxy, n-propoxy, isopropoxy, butoxy, pentyloxy, hexyloxy, octyloxy, nonyloxy, decyloxy and / or benzyloxy, etc., but embodiments of the present disclosure are not limited thereto.

[0191] Boryl in this article may refer to a boron atom bonded to an alkyl or aryl group as defined herein. Boryl includes alkylboryl and arylboryl. The alkyl in the alkylboryl may be linear, branched or cyclic. The number of carbon atoms in the alkylboryl is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylboryl is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of boryl may include dimethylboryl, tert-butylmethylboryl, diphenylboryl and / or phenylboryl, etc., but embodiments of the present disclosure are not limited thereto.

[0192] In the specification, the amine group may include an alkylamine group and an arylamine group. The alkyl group in the alkylamine group may be linear, branched or cyclic. The number of carbon atoms in the alkylamine group is not specifically limited, but may be, for example, 1 to 20 or 1 to 10. The number of carbon atoms in the arylamine group is not specifically limited, but may be, for example, 6 to 30, 6 to 20 or 6 to 15. Examples of the amine group may include a methylamine group, a dimethylamine group, a phenylamine group, a diphenylamine group, a naphthylamine group and / or a 9-methyl-anthrylamine group, etc., but the embodiments of the present disclosure are not limited thereto.

[0193] In the specification, the phosphine oxide group may mean an alkyl group or an aryl group defined above combined with -P(=O)-. The number of carbon atoms of the phosphine oxide group is not specifically limited, but may be 1 to 30, 1 to 20, or 1 to 10. The phosphine oxide group may include an alkyl phosphine oxide group and an aryl phosphine oxide group. For example, the phosphine oxide group may have the following structure, but is not limited thereto.

[0194]

[0195] In the specification, the phosphinosulfide group may mean an alkyl or aryl group defined above in combination with -P(=S)-. The number of carbon atoms of the phosphinosulfide group is not specifically limited, but may be 1 to 30, 1 to 20, or 1 to 10. The phosphinosulfide group may include an alkylphosphinosulfide group and an arylphosphinosulfide group. For example, the phosphinosulfide group may have the following structure, but is not limited thereto.

[0196]

[0197] In the specification, the alkyl group in the alkoxy group, alkylthio group, alkylsulfinyl group, alkylsulfonyl group, alkylaryl group, alkylamino group, alkylboryl group, alkylsilyl group, alkylgermanyl group, alkylphosphine oxide group, alkylphosphine sulfide group, and alkylamine group is the same as the examples of the alkyl group described herein.

[0198] In the specification, the aryl group in the aryloxy group, arylthio group, arylsulfinyl group, arylsulfonyl group, arylamino group, arylboryl group, arylsilyl group, arylgermanyl group, arylphosphine oxide group, arylphosphine sulfide group and arylamine group is the same as the examples of the aryl group described herein.

[0199] In the specification, a direct connection may refer to a single bond.

[0200] In one or more embodiments, in the specification, and "-*" indicate the location to be linked.

[0201] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0202] Display device

[0203] Figure 1A plan view of a display device DD for explaining one or more embodiments. Figure 2 is a cross-sectional view of a display device DD according to an embodiment. Figure 2 To explain along Figure 1 A cross-sectional view of a portion taken along line II'.

[0204] The display device DD may include a display panel DP and an optical layer PP arranged on the display panel DP. The display panel DP includes light emitting elements ED-1, ED-2, and ED-3. The display device DD may include a plurality of light emitting elements ED-1, ED-2, and ED-3. The optical layer PP may be arranged on the display panel DP to control reflected light of external light at the display panel DP. The optical layer PP may include, for example, a polarizing layer or a color filter layer. In one or more embodiments, unlike the configuration illustrated in the drawings, the optical layer PP may not be provided in the display device DD of one or more embodiments.

[0205] The base substrate BL may be disposed on the optical layer PP. The base substrate BL may be a member providing a base surface on which the optical layer PP is disposed. The base substrate BL may be a glass substrate, a metal substrate, and / or a plastic substrate, etc. However, the embodiments of the present disclosure are not limited thereto, and the base substrate BL may be an inorganic layer, an organic layer, or a composite material layer. In one or more embodiments, unlike the illustrated configuration, in one or more embodiments, the base substrate BL may not be provided.

[0206] The display device DD according to one or more embodiments may further include a filling layer. The filling layer may be arranged between the display 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 silicone resin, and an epoxy resin.

[0207] The display panel DP may include a base layer BS, a circuit layer DP-CL provided on the base layer BS, and a display device layer DP-ED. The display device layer DP-ED may include a pixel defining film PDL, light emitting elements ED-1, ED-2, and ED-3 arranged between portions of the pixel defining film PDL, and an encapsulation layer TFE arranged on the light emitting elements ED-1, ED-2, and ED-3.

[0208] The base layer BS may be a member providing a base surface on which the display device layer DP-ED is provided. 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.

[0209] In one or more embodiments, the circuit layer DP-CL is provided on the base layer BS, and the circuit layer DP-CL may include a plurality of transistors. Each transistor may include a control electrode, an input electrode, and an output electrode. For example, the circuit layer DP-CL may include a switching transistor and a driving transistor for driving the light emitting elements ED-1, ED-2, and ED-3 of the display device layer DP-ED.

[0210] Each of the light emitting elements ED-1, ED-2 and ED-3 may have a Figures 3 to 6 The structure of each light-emitting element ED of the embodiment of the present invention is described in more detail elsewhere herein. Each of the light-emitting elements ED-1, ED-2 and ED-3 may include a first electrode EL1, a hole transport region HTR, emission layers EML-R, EML-G and EML-B, an electron transport region ETR, and a second electrode EL2.

[0211] Figure 2 One or more embodiments are explained, 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 provided in the opening OH defined by the pixel defining film PDL, and the hole transport region HTR, the electron transport region ETR and the second electrode EL2 are provided as a common layer in the entire light emitting elements ED-1, ED-2 and ED-3. However, the embodiments of the present disclosure are not limited thereto, and are not limited to Figure 2 Different from the configuration explained in the embodiment, the hole transport region HTR and the electron transport region ETR in one or more embodiments can be provided by patterning in the opening OH defined by 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 provided by patterning by inkjet printing.

[0212] The encapsulation layer TFE may cover the light-emitting elements ED-1, ED-2 and ED-3. The encapsulation layer TFE may seal the light-emitting elements ED-1, ED-2 and ED-3 in the display device layer DP-ED. The encapsulation layer TFE may be a thin film encapsulation layer. The encapsulation layer TFE may be formed by laminating one or more layers. The encapsulation layer TFE includes at least one insulating layer. The encapsulation layer TFE according to one or more embodiments may include at least one inorganic film (hereinafter, encapsulation inorganic film). The encapsulation layer TFE according to one or more embodiments may also include at least one organic film (hereinafter, encapsulation organic film) and at least one encapsulation inorganic film.

[0213] The encapsulated inorganic film protects the display device layer DP-ED from moisture and / or oxygen, and the encapsulated organic film protects the display device layer DP-ED from foreign matter (such as dust particles). The encapsulated inorganic film may include silicon nitride, silicon oxynitride, silicon oxide, titanium oxide and / or aluminum oxide, etc., but the embodiments of the present disclosure are not particularly limited thereto. The encapsulated organic film may include acrylic compounds and / or epoxy compounds, etc. The encapsulated organic film may include a photopolymerizable organic material, but the embodiments of the present disclosure are not particularly limited thereto.

[0214] The encapsulation layer TFE may be provided on the second electrode EL2 and may be provided to fill the opening OH.

[0215] refer to Figure 1 and Figure 2 , the display device DD may include one or more non-light-emitting areas NPXA and also include light-emitting areas PXA-R, PXA-G, and PXA-B. The light-emitting areas PXA-R, PXA-G, and PXA-B may be areas in which light generated by the corresponding light-emitting elements ED-1, ED-2, and ED-3 is emitted. The light-emitting areas PXA-R, PXA-G, and PXA-B may be spaced apart from each other on a plane (e.g., in a plan view) and / or spaced apart from each other.

[0216] Each of the light-emitting areas PXA-R, PXA-G, and PXA-B may be an area divided (e.g., defined) by a pixel-defining film PDL. The non-light-emitting area NPXA may be an area between adjacent light-emitting areas PXA-R, PXA-G, and PXA-B corresponding to the pixel-defining film PDL. In one or more embodiments, in the specification, the light-emitting areas PXA-R, PXA-G, and PXA-B may correspond to pixels, respectively. The pixel-defining 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 provided in the opening OH defined by the pixel-defining film PDL and separated from each other.

[0217] The light emitting areas PXA-R, PXA-G, and PXA-B may be divided into a plurality of groups according to the colors of light generated from the light emitting elements ED-1, ED-2, and ED-3. Figure 1 and Figure 2 In the display device DD of one or more embodiments explained in , three light emitting areas PXA-R, PXA-G and PXA-B that emit red light, green light and blue light, respectively, are exemplarily explained. For example, the display device DD of one or more embodiments may include a red light emitting area PXA-R, a green light emitting area PXA-G and a blue light emitting area PXA-B that are separated from each other.

[0218] 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 wavelength ranges different 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.

[0219] 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 others. For example, the first to third light emitting elements ED-1, ED-2, and ED-3 may all emit blue light.

[0220] The light emitting areas PXA-R, PXA-G, and PXA-B in the display device DD according to one or more embodiments may be arranged in a stripe form. Figure 1 , a plurality of red light emitting areas PXA-R may be arranged along the second direction axis DR2, a plurality of green light emitting areas PXA-G may be arranged along the second direction axis DR2, and a plurality of blue light emitting areas PXA-B may each be arranged along the second direction axis DR2. In one or more embodiments, the red light emitting areas PXA-R, the green light emitting areas PXA-G, and the blue light emitting areas PXA-B may be alternately arranged in this order along the first direction axis DR1.

[0221] Figure 1 and Figure 2 It is explained that all the light-emitting regions PXA-R, PXA-G, and PXA-B have the same area, but the embodiments of the present disclosure are not limited thereto. Therefore, the light-emitting regions PXA-R, PXA-G, and PXA-B may have different areas from each other according to the wavelength range of the emitted light. In this case, the areas of the light-emitting regions PXA-R, PXA-G, and PXA-B may refer to the areas when viewed on a plane defined by the first direction axis DR1 and the second direction axis DR2. The third direction axis DR3 may be perpendicular to the plane defined by the first direction axis DR1 and the second direction axis DR2.

[0222] In one or more embodiments, the arrangement of the light-emitting areas PXA-R, PXA-G, and PXA-B is not limited to Figure 1The arrangement of the red light emitting areas PXA-R, the green light emitting areas PXA-G and the blue light emitting areas PXA-B can be provided in one or more appropriate combinations according to the characteristics of the display quality desired or required in the display device DD. For example, the arrangement of the light emitting areas PXA-R, PXA-G and PXA-B can be in a honeycomb shape. Layout or diamond )Layout( and Diamond is a registered trademark owned by Samsung Display Co., Ltd.).

[0223] In one or more embodiments, the areas of the light-emitting regions PXA-R, PXA-G, and PXA-B may be different from each other. For example, in one or more embodiments, the area of ​​the green light-emitting region PXA-G may be smaller than the area of ​​the blue light-emitting region PXA-B, but the embodiments of the present disclosure are not limited thereto.

[0224] Below, Figures 3 to 6 Schematically shows a cross-sectional view of a light emitting element ED according to one or more embodiments. The light emitting element ED according to one or more embodiments may include a first electrode EL1, a second electrode EL2 arranged opposite to the first electrode EL1, and at least one functional layer arranged between the first electrode EL1 and the second electrode EL2. The light emitting element ED of one or more embodiments may include a fused polycyclic compound of one or more embodiments as described in more detail elsewhere herein in at least one functional layer.

[0225] The light emitting element ED may include a hole transport region HTR, an emission layer EML, and / or an electron transport region ETR, etc., which are sequentially stacked as at least one functional layer. Figure 3 , 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.

[0226] and Figure 3 compared to, Figure 4 A cross-sectional view of a light emitting element ED according to one or more embodiments is illustrated, wherein the hole transport region HTR includes a hole injection layer HIL and a hole transport layer HTL, and the electron transport region ETR includes an electron injection layer EIL and an electron transport layer ETL. Figure 3 compared to, Figure 5A cross-sectional view of a light emitting element ED according to one or more embodiments is illustrated, wherein the hole transport region HTR includes a hole injection layer HIL, a hole transport layer HTL, and an electron blocking layer EBL, and the electron transport region ETR includes an electron injection layer EIL, an electron transport layer ETL, and a hole blocking layer HBL. Figure 4 compared to, Figure 6 A cross-sectional view of a light emitting element ED including a capping layer CPL disposed on the second electrode EL2 according to one or more embodiments is explained.

[0227] The light-emitting element ED of one or more embodiments may include the fused polycyclic compound of one or more embodiments in at least one functional layer, which will be explained later. In the light-emitting element ED of one or more embodiments, at least one of the hole transport region HTR, the emission layer EML, and the electron transport region ETR may include the fused polycyclic compound of one or more embodiments. For example, in the light-emitting element ED of one or more embodiments, the emission layer EML may include the fused polycyclic compound of one or more embodiments.

[0228] The first electrode EL1 has conductivity (for example, is a conductor). The first electrode EL1 may be formed of a metal material, a metal alloy, or a conductive compound. The first electrode EL1 may be an anode or a cathode. However, the embodiments of the present disclosure are not limited thereto. In one or more embodiments, the first electrode EL1 may be a pixel electrode. The first electrode EL1 may be a transmissive electrode, a transflective electrode, or a reflective electrode. The first electrode EL1 may include at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, In, Sn, and Zn, a compound selected from two or more of these (for example, of these), a mixture selected from two or more of these (for example, of these), or an oxide selected from one or more of these.

[0229] 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 at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, and W, a compound thereof, or a mixture (for example, a mixture of Ag and Mg), or a multilayer structure material such as LiF / Ca (a stacked structure of LiF and Ca) or LiF / Al (a stacked structure of LiF and Al). In one or more embodiments, the first electrode EL1 may have a multilayer structure including a reflective film or a transflective film formed of the materials described herein, and a transparent conductive film formed of ITO, IZO, ZnO, and / or ITZO, etc. For example, the first electrode EL1 may have a three-layer structure of ITO / Ag / ITO, but the embodiments of the present disclosure are not limited thereto. In one or more embodiments, the 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 1000 Å. to about For example, the thickness of the first electrode EL1 may be about to about

[0230] The hole transport region HTR is provided 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

[0231] The hole transport region HTR may have a single-layer structure formed of a single material, a single-layer structure formed of a plurality of different materials, or a multi-layer structure including a plurality of layers formed of a plurality of different materials.

[0232] For example, the hole transport region HTR may have a single-layer structure of a hole injection layer HIL or a hole transport layer HTL, or may have a single-layer structure formed of a hole injection material and a hole transport material. In one or more embodiments, the hole transport region HTR may have a single-layer structure formed of a plurality of different materials, or a structure in which 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 the embodiments of the present disclosure are not limited thereto.

[0233] The hole transport region HTR may be formed using one or more appropriate methods such as vacuum deposition, spin coating, casting, Langmuir-Brokett (LB), inkjet printing, laser printing, and laser induced thermal imaging (LITI).

[0234] The hole transport region HTR may include a compound represented by Formula H-1:

[0235] Formula H-1

[0236]

[0237] In formula H-1, L 1 and L 2 Each of a and b may be independently a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. a and b may be independently an integer selected from 0 to 10. In one or more embodiments, if (for example, when) a or b is an integer of 2 or more, multiple L 1 and multiple L 2 Each may independently be a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms.

[0238] In formula H-1, Ar 1 and Ar 2 may be each independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. In one or more embodiments, in formula H-1, Ar 3 It may be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0239] The compound represented by formula H-1 may be a monoamine compound. In one or more embodiments, the compound represented by formula H-1 may be a compound wherein Ar 1 To Ar 3 In one or more embodiments, the compound represented by formula H-1 may be a diamine compound in which Ar 1 and Ar 2 A carbazole compound comprising a substituted or unsubstituted carbazole group in at least one of Ar 1 and Ar 2 A fluorene compound comprising a substituted or unsubstituted fluorenyl group in at least one of the compounds.

[0240] The compound represented by Formula H-1 may be represented by any one of the compounds selected from 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 those represented by Compound Group H:

[0241] Compound Group H

[0242]

[0243] 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 -dimethylphenyl-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 / or dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN), etc.

[0244] The hole transport region HTR may include carbazole derivatives (such as N-phenylcarbazole or polyvinylcarbazole), fluorene derivatives and / or triphenylamine derivatives (such as N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4,4',4"-tri(carbazole-9-yl)triphenylamine (TCTA), N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB), 4,4'-cyclohexylenebis[N,N-bis(4-methylphenyl)aniline] (TAPC), 4,4'-bis[N,N'-(3-tolyl)amino]-3,3'-dimethylbiphenyl (HMTPD) or 1,3-bis(carbazole-9-yl)benzene (mCP)), etc.

[0245] In one or more 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.

[0246] The hole transport region HTR may include the compound described herein in at least one of the hole injection layer HIL, the hole transport layer HTL, and the electron blocking layer EBL.

[0247] 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 100 nm. 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, if (eg, 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 the driving voltage.

[0248] In addition to the materials described herein, the hole transport region HTR may further include a charge generation material to increase conductivity. The charge generation material may be uniformly (substantially uniformly) or non-uniformly (substantially non-uniformly) dispersed in the hole transport region HTR. The charge generation material may be, for example, a p-dopant. The p-dopant may include at least one of a metal halide, a quinone derivative, a metal oxide, and a cyano-containing compound, but the embodiments of the present disclosure are not limited thereto. For example, the p-dopant may include a metal halide (such as CuI or RbI), a quinone derivative (such as tetracyanoquinodimethane (TCNQ) or 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanoquinodimethane (F4-TCNQ)), a metal oxide (such as tungsten oxide or molybdenum oxide) and / or a cyano-containing compound (such as dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN) 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.

[0249] 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 may thus increase the luminous efficiency. The material that may be included in the hole transport region HTR may be used as the material to be included in the buffer layer. The electron blocking layer EBL is a layer for preventing or reducing electrons from being injected from the electron transport region ETR to the hole transport region HTR.

[0250] The emission layer EML is provided 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 structure formed of a single material, a single-layer structure formed of a plurality of different materials, or a multi-layer structure having a plurality of layers formed of a plurality of different materials.

[0251] The light-emitting element ED of one or more embodiments may include a fused polycyclic compound represented by Formula 1 in at least one functional layer arranged between the first electrode EL1 and the second electrode EL2. The emission layer EML in the light-emitting element ED according to one or more embodiments may include the fused polycyclic compound of one or more embodiments. In one or more embodiments, the emission layer EML may include the fused polycyclic compound of one or more embodiments as a dopant. The fused polycyclic compound of one or more embodiments may be a dopant material of the emission layer EML. In one or more embodiments, in the specification, the fused polycyclic compound of one or more embodiments may be referred to as a first compound.

[0252] Condensed polycyclic compounds

[0253] The fused polycyclic compound of one or more embodiments may include a fused polycyclic heterocycle (i.e., a fused ring core) in which five rings are fused and contain a first boron atom, a first nitrogen atom, and a second nitrogen atom, and may have a structure in which two aromatic hydrocarbon rings are connected to the fused polycyclic heterocycle. The second boron atom, the first heteroatom, and the second heteroatom may be arranged as a linking group between the fused polycyclic heterocycle and the two aromatic hydrocarbon rings. The two aromatic hydrocarbon rings may be connected to the fused polycyclic heterocycle via the second boron atom, the first heteroatom, and the second heteroatom to form another fused ring.

[0254] In one or more embodiments, in the fused polycyclic heterocycle included in the fused polycyclic compound, three substituted or unsubstituted benzene rings are connected via a first boron atom, a first nitrogen atom, and a second nitrogen atom to form five rings. More specifically, in the three benzene rings included in the fused polycyclic heterocycle, the three benzene rings may be connected around the first boron atom, the first benzene ring and the second benzene ring of the three benzene rings may be connected via a first nitrogen atom, and the remaining third benzene ring may be connected to the second benzene ring via a second nitrogen atom. The first boron atom and the first nitrogen atom and the second nitrogen atom may all be connected to the second benzene ring.

[0255] In one or more embodiments, the two aromatic hydrocarbon rings included in the fused polycyclic compound may be connected to the fused polycyclic heterocycle via the second boron atom, the first heteroatom and the second heteroatom to form another fused ring. More specifically, the fused polycyclic compound of one or more embodiments may have a structure in which the fourth benzene ring and the fifth benzene ring as two aromatic hydrocarbon rings are connected to the fused polycyclic heterocycle, and the second boron atom, the first heteroatom and the second heteroatom may be arranged as a connecting group between the fused polycyclic heterocycle and the fourth benzene ring and the fifth benzene ring. The fourth benzene ring and the fifth benzene ring may be connected to the fused polycyclic heterocycle via the second boron atom, the first heteroatom and the second heteroatom to form four other fused rings.

[0256] The fourth benzene ring and the fifth benzene ring may be connected to the third benzene ring of the three benzene rings included in the fused polycyclic heterocycle. More specifically, the second boron atom, the first heteroatom and the second heteroatom may be connected to the third benzene ring, the fourth benzene ring and the third benzene ring may be connected via the second boron atom and the first heteroatom, and the fifth benzene ring and the third benzene ring may be connected via the second boron atom and the second heteroatom. The second boron atom may be connected to the carbon atom corresponding to the para position relative to the carbon atom bonded to the second nitrogen atom in the carbon atom constituting the third benzene ring. The first heteroatom may be connected to the carbon atom corresponding to the para position relative to the carbon atom bonded to the first boron atom in the carbon atom constituting the third benzene ring. The second heteroatom may be connected to the carbon atom corresponding to the ortho position relative to the carbon atom bonded to the first boron atom in the carbon atom constituting the third benzene ring. In one or more embodiments, in this specification, the third benzene ring connected to the fourth benzene ring and the fifth benzene ring may be referred to as a "fused benzene ring".

[0257] In one or more embodiments, the first heteroatom may be a nitrogen (N) atom, an oxygen (O) atom, a sulfur (S) atom, a selenium (Se) atom, or a tellurium (Te) atom. The second heteroatom may be an oxygen (O) atom, a sulfur (S) atom, or a selenium (Se) atom. From the perspective of ease of synthesis and chemical stability, the second heteroatom may not include (e.g., may exclude) a nitrogen atom. Because the second heteroatom connected to the ortho-carbon relative to the carbon atom bonded to the first boron atom does not include a nitrogen atom, the ease of synthesis and chemical stability can be improved.

[0258] The fused polycyclic compound of one or more embodiments may include a first substituent connected to a fused polycyclic heterocycle. The first substituent may be connected to at least one of the first nitrogen atom and the second nitrogen atom of the fused polycyclic heterocycle in the fused polycyclic compound constituting one or more embodiments. The first substituent may include a benzene portion, and may include a first sub-substituent and a second sub-substituent substituted at a specific position carbon of the benzene portion. For example, the first substituent may include a benzene portion connected to a nitrogen atom of the fused polycyclic heterocycle, and a structure in which the first sub-substituent and the second sub-substituent are connected to two ortho positions relative to the carbon atom bonded to the nitrogen atom. Each of the first sub-substituent and the second sub-substituent may be a substituted or unsubstituted aryl group with 6 to 30 ring carbon atoms. For example, each of the first sub-substituent and the second sub-substituent may be a substituted or unsubstituted phenyl.

[0259] The fused polycyclic compound of one or more embodiments may be represented by Formula 1:

[0260] Formula 1

[0261]

[0262] The fused polycyclic compound represented by Formula 1 of one or more embodiments may include a fused polycyclic heterocycle in which five rings are fused, having a first boron atom, a first nitrogen atom, and a second nitrogen atom at the center, and may have a structure in which two aromatic hydrocarbon rings are connected to the fused polycyclic heterocycle. The second boron atom, the first heteroatom, and the second heteroatom may be arranged as a connecting group between the fused polycyclic heterocycle and the two aromatic hydrocarbon rings. The two aromatic hydrocarbon rings may be connected to the fused polycyclic heterocycle via the second boron atom, the first heteroatom, and the second heteroatom to form another fused ring. In one or more embodiments, in this specification, in Formula 1, the ring represented by R 1 To R 4 The benzene ring substituted with the substituent represented by may correspond to the aforementioned first benzene ring, which is replaced by R 5 To R 7 The benzene ring substituted with the substituent represented by may correspond to the aforementioned second benzene ring and is represented by R 8 The benzene ring substituted with the substituent represented by may correspond to the aforementioned third benzene ring.

[0263] In formula 1, X 1 Can be NR 17 , O, S, Se or Te.

[0264] In formula 1, X 2 It can be O, S or Se.

[0265] In formula 1, X 1 and X 2 can be the same or different from each other. For example, X 1 Can be S, and X 2 Can be O. In one or more embodiments, X 1 Can be NR 17 And X 2 Can be O. In one or more embodiments, X 1 Can be Se and X 2 Can be O. In one or more embodiments, X 1 can be Te, and X 2 Can be O. In one or more embodiments, X 1 and X 2 Both (for example, X 1 and X 2 At the same time) can be O.

[0266] In formula 1, R 1 To R 7Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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. For example, R 1 To R 7 Each of the above groups may independently be a hydrogen atom, a deuterium atom, a fluorine group, a cyano group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted triphenylsilyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted quadriphenyl group, a substituted or unsubstituted pentaphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted benzofuranocarbazolyl group or a substituted or unsubstituted dibenzofuranyl group.

[0267] In formula 1, R 8 To R 16 Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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. For example, R 8 To R 16 may be each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted trimethylsilyl group, a substituted or unsubstituted trimethylgermanyl group, a substituted or unsubstituted diphenylamine group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, or a substituted or unsubstituted carbazolyl group. In one or more embodiments, R 8 To R 16 Each of can be bonded to an adjacent group to form a ring. For example, if (for example, when) X 1 NR 17 And R 17 When R is a substituted or unsubstituted phenyl group, 9 Can be used with R 17 bonded to form a fused ring containing a 5-membered or 6-membered heterocyclic ring. 8 To R 16 Adjacent two of them may be bonded to each other to form a ring.

[0268] In formula 1, R17 It may be 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. 17 Can bond with adjacent groups to form a ring. For example, R 17 It may be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, or a substituted or unsubstituted terphenyl group.

[0269] In formula 1, Ar 1 and Ar 2 and Ar may each 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. 1 and Ar 2 Each of the groups may independently be a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group.

[0270] In formula 1, Ar 1 and Ar 2 At least one of may be represented by Formula S. In the present specification, the substituent represented by Formula S may correspond to the aforementioned first substituent.

[0271] Formula S

[0272]

[0273] In formula 1, Z 1 To Z 3 Each of Z may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, Z 1 To Z 3 Each of them may be bonded to an adjacent group to form a ring. 1 To Z 3 They may each independently be a hydrogen atom, a substituted or unsubstituted tert-butyl group, or a substituted or unsubstituted phenyl group.

[0274] In Formula S, n1 may be an integer selected from 0 to 3. When n1 is 0, the fused polycyclic compound of one or more embodiments may not be Z 1 In formula S, where n1 is 3 and Z 1 The case where all Z atoms are hydrogen atoms may be the same as the case where n1 in the formula S is 0. When n1 is an integer of 2 or more, a plurality of Z 1 Can be all the same, or multiple Z 1 At least one of may be different from the others.

[0275] In Formula S, n2 and n3 may each independently be an integer selected from 0 to 5. When each of n2 and n3 is 0, the fused polycyclic compound of one or more embodiments may not be Z 2 and Z 3 In formula S, each of n2 and n3 is 5 and Z 2 and Z 3 The case where each of n2 and n3 in the formula S is 0 may be the same as the case where each of n2 and n3 is an integer of 2 or more. 2 and multiple Z 3 Can be the same or multiple Z 2 and multiple Z 3 At least one of may be different from the others.

[0276] In Formula S, -* may be a position for connection to Formula 1.

[0277] The fused polycyclic compound represented by Formula 1 according to one or more embodiments may have a structure in which two aromatic hydrocarbon rings are fused to a fused polycyclic heterocyclic ring at a specific position via one boron atom and two hetero atoms, thereby achieving high luminous efficiency and long lifetime.

[0278] The fused polycyclic compound of one or more embodiments may include a fused polycyclic heterocycle in which five rings are fused, having a first boron atom, a first nitrogen atom, and a second nitrogen atom at the center, and may have a structure in which two aromatic hydrocarbon rings are connected to the fused polycyclic heterocycle. In one or more embodiments, the fused polycyclic compound of one or more embodiments may include an additional fused ring formed by connecting two aromatic hydrocarbon rings to the fused polycyclic heterocycle via a second boron atom, a first heteroatom, and a second heteroatom. The second boron atom, the first heteroatom, and the second heteroatom connecting the two aromatic hydrocarbon rings to the fused polycyclic heterocycle are connected to a specific position of the fused polycyclic heterocycle, and thus the luminous efficiency and service life characteristics can be improved.

[0279] One of the important factors that exhibit a relatively low lifespan in devices utilizing thermally activated delayed fluorescence is the relatively low anti-intersystem crossing (RISC) rate in thermally activated delayed fluorescence (TADF)-type emitters. Because according to the El-sayed rule, the spin-orbit coupling constant between the lowest excited singlet energy level (S1 energy level) and the lowest excited triplet energy level (T1 energy level) is substantially close to 0, it is difficult to produce a direct transition between the lowest excited singlet energy level (S1 energy level) and the lowest excited triplet energy level (T1 energy level), and therefore, a complex intersystem crossing mechanism via a higher excited triplet energy level (Tn energy level, where n is 2 or greater) is utilized. In this case, exciton quenching, such as collision of accumulated triplet excitons, occurs, and thus the luminous efficiency and service life of the light-emitting element may be degraded. Accordingly, when the anti-intersystem crossing rate is improved and thus triplet excitons having high energy accumulated in the emitter can transition at a high rate, both luminous efficiency and lifetime (eg, luminous efficiency and lifetime simultaneously) can be improved.

[0280] The fused polycyclic compound according to one or more embodiments of the present disclosure has a structure in which two aromatic hydrocarbon rings are fused to a fused polycyclic heterocyclic ring via a boron atom and two heteroatoms at a specific position, thereby increasing the spin-orbit coupling constant and thus achieving high luminous efficiency and long service life. More specifically, one of the two heteroatoms connecting the two aromatic hydrocarbon rings and the fused polycyclic heterocyclic ring is arranged to be located at an adjacent position relative to the carbon atom bonded to the first boron atom of the fused polycyclic heterocyclic ring, thereby inducing a distortion effect of the luminescent core and mixing the localized excited state (LE state) and the charge transfer state (CT state). This can cause a change in the orbital distribution between the lowest excited singlet energy level (S1 level) and the lowest excited triplet energy level (T1 level), so that the suppression effect by the El-sayed rule is offset, and thus the spin-orbit coupling constant between the lowest excited singlet energy level (S1 level) and the lowest excited triplet energy level (T1 level) can be increased. Because the transition probability between triplet and singlet states and the delayed fluorescence lifetime (tau, τ) depend on the strength of the spin-orbit interaction, the fused polycyclic compound of one or more embodiments in which the spin-orbit coupling constant is improved may have an improved anti-intersystem crossing rate and a shortened delayed fluorescence lifetime. In one or more embodiments, because the fused polycyclic compound of one or more embodiments has a structure in which the conjugated structure is extended by an aromatic hydrocarbon ring, the multiple resonance effect can be improved and the luminous efficiency can be further improved. Accordingly, the luminous efficiency and element service life of a light-emitting element including the fused polycyclic compound of one or more embodiments as an emitter can be greatly improved.

[0281] In addition, the fused polycyclic compound of one or more embodiments can effectively maintain the triangular planar structure of the boron atom through the steric effect of the first substituent. The boron atom has an electron-deficient characteristic through an empty p-orbital, thereby forming a bond with other nucleophiles and thus becoming a tetrahedral structure, which can cause degradation of the light-emitting element. According to the present disclosure, the fused polycyclic compound of one or more embodiments has a first substituent introduced at the fused ring core, thereby effectively protecting the empty p-orbital of the boron atom, and thus preventing or reducing the degradation phenomenon caused by structural changes.

[0282] In one or more embodiments, the fused polycyclic compound of one or more embodiments may have an increased luminous efficiency because the intermolecular interaction can be suppressed or reduced by the steric effect of the first substituent, thereby controlling the formation of aggregates, excited molecules or excited complexes. Because the fused polycyclic compound represented by Formula 1 of one or more embodiments has a bulky structure, the distance between the molecules can be increased to reduce Dexter energy transfer, thereby suppressing or reducing the increase in the concentration of triplet excitons in the fused polycyclic compound. High concentrations of triplet excitons remain in an excited state for a long period of time, and thus can induce compound decomposition, resulting in hot excitons with high energy generated by triplet-triplet annihilation (TTA), thereby causing the destruction of the related (e.g., surrounding) compound structure. In one or more embodiments, because TTA is a bimolecular reaction, it depletes triplet excitons for light emission at a high speed, so non-radiative transitions can cause a reduction in luminous efficiency. The fused polycyclic compound of one or more embodiments has an increase in the distance between molecules due to the first substituent, thereby suppressing or reducing Dexter energy transfer, and thus can suppress or reduce the degradation of the service life caused by the increase in triplet concentration. Therefore, if (for example, when) the fused polycyclic compound of one or more embodiments is used for the emission layer EML of the light-emitting element ED, the luminous efficiency can be increased and the element service life can also be improved.

[0283] In one or more embodiments, in Formula 1, R 1 To R 7 At least one of may be a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or may be represented by any one selected from Formula A-1 to Formula A-4:

[0284] Formula A-1

[0285]

[0286] Formula A-2

[0287]

[0288] Formula A-3

[0289]

[0290] Formula A-4

[0291]

[0292] In formula A-3, Z a Can be NR a10 , O, S or Se. For example, Z a Can be O.

[0293] In Formula A-1 to Formula A-4, R a1 To R a10 Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. For example, R a1 To R a9 R may be each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted phenoxy group, a substituted or unsubstituted diphenylamino group, a substituted or unsubstituted triphenylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted pyridyl group. a10 It can be a substituted or unsubstituted phenyl. In one or more embodiments, R a1 To R a10 Each of R may be bonded to an adjacent group to form a ring. a2 Can be provided as multiple, and multiple R a2 may be bonded to each other to form another fused ring. In one or more embodiments, R a3 Can be provided as multiple, and multiple R a3 May bond to each other to form another condensed ring.

[0294] In Formula A-1 to Formula A-4, m1 and m6 to m8 may each independently be an integer selected from 0 to 5, m2, m3, m5 and m9 may each independently be an integer selected from 0 to 4, and m4 is an integer selected from 0 to 3.

[0295] When each of m1 and m6 to m8 is 0, the fused polycyclic compound of one or more embodiments may exclude (eg, not be substituted by) the following: R a1and R a6 To R a8 Each of m1 and m6 to m8 is 5 and R a1 and R a6 To R a8 The case where each of m1 and m6 to m8 is 0 may be the same as the case where each of m1 and m6 to m8 is 0. When each of m1 and m6 to m8 is an integer of 2 or more, a plurality of R a1 and multiple R a6 To multiple R a8 Can be the same or multiple R a1 and multiple R a6 To multiple R a8 At least one of may be different from the others.

[0296] When each of m2, m3, m5 and m9 is 0, the fused polycyclic compound of one or more embodiments may not be R a2 , R a3 , R a5 and R a9 Each of m2, m3, m5 and m9 is 4 and R a2 , R a3 , R a5 and R a9 The case where each of m2, m3, m5 and m9 is 0 may be the same as the case where each of m2, m3, m5 and m9 is 0. When each of m2, m3, m5 and m9 is an integer of 2 or more, a plurality of R a2 , multiple R a3 , multiple R a5 and multiple R a9 Can be the same or multiple R a2 , multiple R a3 , multiple R a5 and multiple R a9 At least one of may be different from the others.

[0297] When m4 is 0, the fused polycyclic compound of one or more embodiments may exclude R a4 (For example, not by R a4 substituted). wherein m4 is 3 and R a4 The case where all are hydrogen atoms may be the same as the case where m4 is 0. When m4 is an integer of 2 or more, a plurality of R a4 Can be all the same, or multiple R a4 At least one of may be different from the others.

[0298] In one or more embodiments, selected from R 1 To R 16At least one of may be at least one (eg, any one) selected from substituent group 1:

[0299] Substituent Group 1

[0300]

[0301]

[0302]

[0303]

[0304]

[0305]

[0306]

[0307]

[0308]

[0309]

[0310] Wherein, -* is the position connected to Formula 1.

[0311] In one or more embodiments, in Formula 1, Ar 1 and Ar 2 At least one of the formula S may be represented by the formula S, and the other (e.g., any remaining Ar 1 or Ar 2 ) can be represented by any one selected from Formula B-1 to Formula B-3:

[0312] Formula B-1

[0313]

[0314] Formula B-2

[0315]

[0316] Formula B-3

[0317]

[0318] In formula B-3, Z b Can be NR b8 , O, S or Se.

[0319] In Formula B-1 to Formula B-3, R b1 To R b7Each of R and R is independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, R b1 To R b7 Each of may bond with an adjacent group to form a ring.

[0320] In formula B-3, R b8 It may be 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. b8 The aryl group may be substituted or unsubstituted and may have 6 to 30 ring carbon atoms.

[0321] In Formula B-1 to Formula B-3, m11, m14 and m15 may each independently be an integer selected from 0 to 5, m12 and m17 may each independently be an integer selected from 0 to 4, and m13 and m16 may each independently be an integer selected from 0 to 3.

[0322] When each of m11, m14, and m15 is 0, the fused polycyclic compound of one or more embodiments may exclude (eg, not be substituted by) the following: R b1 , R b4 and R b5 Each of m11, m14 and m15 is 5 and R b1 , R b4 and R b5 The case where each of m11, m14 and m15 is 0 may be the same as the case where each of m11, m14 and m15 is 0. When each of m11, m14 and m15 is an integer of 2 or more, a plurality of R b1 , multiple R b4 and multiple R b5 Can be the same or multiple R b1 , multiple R b4 and multiple R b5 At least one of may be different from the others.

[0323] When each of m12 and m17 is 0, the fused polycyclic compound of one or more embodiments may exclude (eg, not be substituted by) the following: R b2 and R b7Each of m12 and m17 is 4 and R b2 and R b7 The case where each of m12 and m17 is 0 may be the same as the case where each of m12 and m17 is 0. When each of m12 and m17 is an integer of 2 or more, a plurality of R b2 and multiple R b7 Can be the same or multiple R b2 and multiple R b7 At least one of may be different from the others.

[0324] When each of m13 and m16 is 0, the fused polycyclic compound of one or more embodiments may not be R b3 and R b6 Each of m13 and m16 is 3 and R b3 and R b6 The case where each of m13 and m16 is 0 may be the same as the case where each of m13 and m16 is 0. When each of m13 and m16 is an integer of 2 or more, a plurality of R b3 and multiple R b6 Can be the same or multiple R b3 and multiple R b6 At least one of may be different from the others.

[0325] In Formula B-1 to Formula B-3, -* may be a position for connection to Formula 1.

[0326] In one or more embodiments, the fused polycyclic compound represented by Formula 1 may be represented by Formula 2-1 or Formula 2-2:

[0327] Formula 2-1

[0328]

[0329] Formula 2-2

[0330]

[0331] In formula 2-1 and formula 2-2, A 1 and A 2 Each may be independently represented by any one selected from Formula A-1 to Formula A-4.

[0332] In formula 2-1 and formula 2-2, B 1 It may be a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms. 1 It may be a substituted or unsubstituted tert-butyl group.

[0333] Formula A-1

[0334]

[0335] Formula A-2

[0336]

[0337] Formula A-3

[0338]

[0339] Formula A-4

[0340]

[0341] In formula A-3, Z a Can be NR a10 , O, S or Se. For example, Z a Can be O.

[0342] In Formula A-1 to Formula A-4, R a1 To R a10 Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. For example, R a1 To R a9 R may be each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted phenoxy group, a substituted or unsubstituted diphenylamino group, a substituted or unsubstituted triphenylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted pyridyl group. a10 It can be a substituted or unsubstituted phenyl. In one or more embodiments, R a1 To R a10 Each of R may be bonded to an adjacent group to form a ring. a2 Can be provided as multiple, and multiple R a2 may be bonded to each other to form additional fused rings. In one or more embodiments, R a3 Can be provided as multiple, and multiple R a3 May bond to each other to form another condensed ring.

[0343] In Formula A-1 to Formula A-4, m1 and m6 to m8 may each independently be an integer selected from 0 to 5, m2, m3, m5 and m9 may each independently be an integer selected from 0 to 4, and m4 is an integer selected from 0 to 3.

[0344] When each of m1 and m6 to m8 is 0, the fused polycyclic compound of one or more embodiments may not be R a1 and R a6 To R a8 Each of m1 and m6 to m8 is 5 and R a1 and R a6 To R a8 The case where each of m1 and m6 to m8 is 0 may be the same as the case where each of m1 and m6 to m8 is 0. When each of m1 and m6 to m8 is an integer of 2 or more, a plurality of R a1 and multiple R a6 To multiple R a8 Can be the same or multiple R a1 and multiple R a6 To multiple R a8 At least one of may be different from the others.

[0345] When each of m2, m3, m5 and m9 is 0, the fused polycyclic compound of one or more embodiments may not be R a2 , R a3 , R a5 and R a9 Each of m2, m3, m5 and m9 is 4 and R a2 , R a3 , R a5 and R a9 The case where each of m2, m3, m5 and m9 is 0 may be the same as the case where each of m2, m3, m5 and m9 is 0. When each of m2, m3, m5 and m9 is an integer of 2 or more, a plurality of R a2 , multiple R a3 , multiple R a5 and multiple R a9 Can be the same or multiple R a2 , multiple R a3 , multiple R a5 and multiple R a9 At least one of may be different from the others.

[0346] When m4 is 0, the fused polycyclic compound of one or more embodiments may not be R a4 Where m4 is 3 and R a4 The case where all are hydrogen atoms may be the same as the case where m4 is 0. When m4 is an integer of 2 or more, a plurality of Ra4 Can be all the same, or multiple R a4 At least one of may be different from the others.

[0347] In Formula 2-1 and Formula 2-2, the description in Formula 1 is applicable to X 1 , X 2 ,Ar 1 ,Ar 2 , R 1 To R 5 and R 7 To R 16 .

[0348] In one or more embodiments, the fused polycyclic compound represented by Formula 1 may be represented by any one selected from Formula 3-1 to Formula 3-3:

[0349] Formula 3-1

[0350]

[0351] Formula 3-2

[0352]

[0353] Formula 3-3

[0354]

[0355] In formula 3-3, Z 4 To Z 6 Each of Z may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, Z 4 To Z 6 Each of them may be bonded to an adjacent group to form a ring. 4 To Z 6 They may each independently be a hydrogen atom or a substituted or unsubstituted tert-butyl group.

[0356] In Formula 3-3, n4 may be an integer selected from 0 to 3. When n4 is 0, the fused polycyclic compound of one or more embodiments may not be Z 4 Where n4 is 3 and Z 4 The case where all of them are hydrogen atoms may be the same as the case where n4 is 0. When n4 is an integer of 2 or more, a plurality of Z4 Can be all the same, or multiple Z 4 At least one of may be different from the others.

[0357] In Formula 3-3, n5 and n6 may each independently be an integer selected from 0 to 5. When each of n5 and n6 is 0, the fused polycyclic compound of one or more embodiments may not be Z 5 and Z 6 Each of n5 and n6 is 5 and Z 5 and Z 6 The case where each of n5 and n6 is a hydrogen atom may be the same as the case where each of n5 and n6 is 0. When each of n5 and n6 is an integer of 2 or more, a plurality of Z 5 and multiple Z 6 Can be the same or multiple Z 5 and multiple Z 6 At least one of may be different from the others.

[0358] In Formula 3-1 to Formula 3-3, the description in Formula 1 and Formula S can be applied to X 1 , X 2 ,Ar 1 ,Ar 2 , R 1 To R 16 , Z 1 To Z 3 and n1 to n3.

[0359] In one or more embodiments, the fused polycyclic compound represented by Formula 1 may be represented by any one selected from Formula 4-1 to Formula 4-5:

[0360] Formula 4-1

[0361]

[0362] Formula 4-2

[0363]

[0364] Formula 4-3

[0365]

[0366] Formula 4-4

[0367]

[0368] Formula 4-5

[0369]

[0370] In formula 4-1, C 1To C 8 They may each independently be a hydrogen atom or a deuterium atom.

[0371] In equations 4-1 to 4-5, D 1 , D 2 、E 1 and E 2 may be each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or may be represented by any one selected from Formula C-1 to Formula C-5. In one or more embodiments, D 1 , D 2 、E 1 and E 2 may each independently belong to (eg, be selected from) substituent group 1 as described herein.

[0372] Formula C-1

[0373]

[0374] Formula C-2

[0375]

[0376] Formula C-3

[0377]

[0378] Formula C-4

[0379]

[0380] Formula C-5

[0381]

[0382] In formula C-4, Z c Can be NR c11 , O, S or Se.

[0383] In formula C-5, M may be Si or Ge.

[0384] In Formula C-1 to Formula C-4, R c1 To R c7 Each of R and R is independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, R c1 To Rc7 Each of R may be bonded to an adjacent group to form a ring. c1 To R c7 They may each independently be a hydrogen atom, a deuterium atom, a cyano group, or a substituted or unsubstituted phenyl group.

[0385] In formula C-4 and formula C-5, R c8 To R c11 and R and R are each 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. c8 To R c10 and R are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms. c11 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. c8 To R c10 may be each independently a substituted or unsubstituted methyl group or a substituted or unsubstituted phenyl group, and R c11 It may be a substituted or unsubstituted phenyl group.

[0386] In Formula C-1 to Formula C-4, m21, m24 and m25 may each independently be an integer selected from 0 to 5, m22, m23 and m27 may each independently be an integer selected from 0 to 4, and m26 is an integer selected from 0 to 3.

[0387] When each of m21, m24, and m25 is 0, the fused polycyclic compound of one or more embodiments may not be R c1 , R c4 and R c5 Each of m21, m24 and m25 is 5 and R c1 , R c4 and R c5 The case where each of m21, m24 and m25 is a hydrogen atom may be the same as the case where each of m21, m24 and m25 is 0. When each of m21, m24 and m25 is an integer of 2 or more, a plurality of R c1 , multiple R c4 and multiple R c5 Can be the same or multiple R c1 , multiple R c4 and multiple R c5 At least one of may be different from the others.

[0388] When each of m22, m23, and m27 is 0, the fused polycyclic compound of one or more embodiments may not be R c2 , R c3 and R c7 Each of m22, m23 and m27 is 4 and R c2 , R c3 and R c7 The case where each of m22, m23 and m27 is a hydrogen atom may be the same as the case where each of m22, m23 and m27 is 0. When each of m22, m23 and m27 is an integer of 2 or more, a plurality of R c2 , multiple R c3 and multiple R c7 Can be the same or multiple R c2 , multiple R c3 and multiple R c7 At least one of may be different from the others.

[0389] When m26 is 0, the fused polycyclic compound of one or more embodiments may not be R c6 Where m26 is 3 and R c6 The case where all are hydrogen atoms may be the same as the case where m26 is 0. When m26 is an integer of 2 or more, a plurality of R c6 Can be all the same, or multiple R c6 At least one of may be different from the others.

[0390] -* indicates the location to be connected.

[0391] In Formula 4-1 to Formula 4-5, the same description as in Formula 1 can be applied to X 1 , X 2 ,Ar 1 ,Ar 2 and R 1 To R 16 .

[0392] In one or more embodiments, the fused polycyclic compound represented by Formula 1 may be represented by any one selected from Formula 5-1 to Formula 5-3:

[0393] Formula 5-1

[0394]

[0395] Formula 5-2

[0396]

[0397] Formula 5-3

[0398]

[0399] In Formula 5-1 to Formula 5-3, R 21 To R 24 Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. For example, R 21 To R 24 may be each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted phenoxy group, a substituted or unsubstituted diphenylamine group, a substituted or unsubstituted triphenylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted pyridyl group. In one or more embodiments, R 21 To R 24 Each of R may be bonded to an adjacent group to form a ring. 21 Can be provided as multiple, and multiple R 21 may be bonded to each other to form additional fused rings. In one or more embodiments, R 22 Can be provided as multiple, and multiple R 22 May bond to each other to form another condensed ring.

[0400] In Formula 5-1, a1 and a2 may each independently be an integer selected from 0 to 4. When each of a1 and a2 is 0, the fused polycyclic compound of one or more embodiments may not be R 21 and R 22 Each of a1 and a2 is 4 and R 21 and R 22 The case where each of a1 and a2 is a hydrogen atom may be the same as the case where each of a1 and a2 is 0. When each of a1 and a2 is an integer of 2 or more, a plurality of R 21 and multiple R 22 Can be the same or multiple R 21 and multiple R 22 At least one of may be different from the others.

[0401] In Formula 5-2 and Formula 5-3, a3 and a4 may each independently be an integer selected from 0 to 5. When each of a3 and a4 is 0, the fused polycyclic compound of one or more embodiments may not be R 23 and R24 Each of a3 and a4 is 5 and R 23 and R 24 The case where each of a3 and a4 is a hydrogen atom may be the same as the case where each of a3 and a4 is 0. When each of a3 and a4 is an integer of 2 or more, a plurality of R 23 and multiple R 24 Can be the same or multiple R 23 and multiple R 24 At least one of may be different from the others.

[0402] In Formula 5-1 to Formula 5-3, the description in Formula 1 is applicable to X 1 , X 2 ,Ar 1 ,Ar 2 and R 1 To R 16 .

[0403] In one or more embodiments, the fused polycyclic compound represented by Formula 1 may be represented by any one selected from Formula 6-1 to Formula 6-3:

[0404] Formula 6-1

[0405]

[0406] Formula 6-2

[0407]

[0408] Formula 6-3

[0409]

[0410] In equations 6-1 to 6-3, R 21 To R 24 Each of R and R may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. For example, R 21 To R 24may be each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted phenoxy group, a substituted or unsubstituted diphenylamine group, a substituted or unsubstituted triphenylsilyl group, a substituted or unsubstituted methyl group, a substituted or unsubstituted tert-butyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted pyridyl group. In one or more embodiments, R 21 To R 24 Each of R may be bonded to an adjacent group to form a ring. 21 Can be provided as multiple, and multiple R 21 may be bonded to each other to form another fused ring. In one or more embodiments, R 22 Can be provided as multiple, and multiple R 22 May bond to each other to form another condensed ring.

[0411] In equations 6-1 to 6-3, Z 4 To Z 6 Each of Z may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, Z 4 To Z 6 Each of them may be bonded to an adjacent group to form a ring. 4 To Z 6 They may each independently be a hydrogen atom, a substituted or unsubstituted tert-butyl group, or a substituted or unsubstituted phenyl group.

[0412] In Formula 6-1 to Formula 6-3, a1 and a2 may each independently be an integer selected from 0 to 4, a3, a4, n5 and n6 may each independently be an integer selected from 0 to 5, and n4 is an integer selected from 0 to 3.

[0413] When each of a1 and a2 is 0, the fused polycyclic compound of one or more embodiments may not be R 21 and R 22 Each of a1 and a2 is 4 and R 21 and R 22 The case where each of a1 and a2 is a hydrogen atom may be the same as the case where each of a1 and a2 is 0. When each of a1 and a2 is an integer of 2 or more, a plurality of R 21 and multiple R22 Can be the same or multiple R 21 and multiple R 22 At least one of may be different from the others.

[0414] When each of a3, a4, n5 and n6 is 0, the fused polycyclic compound of one or more embodiments may not be R 23 , R 24 , Z 5 and Z 6 Each of a3, a4, n5 and n6 is 5 and R 23 , R 24 , Z 5 and Z 6 The case where each of a3, a4, n5 and n6 is a hydrogen atom may be the same as the case where each of a3, a4, n5 and n6 is 0. When each of a3, a4, n5 and n6 is an integer of 2 or more, a plurality of R 23 , multiple R 24 , multiple Z 5 and multiple Z 6 Can be the same or multiple R 23 , multiple R 24 , multiple Z 5 and multiple Z 6 At least one of may be different from the others.

[0415] In Formula 6-1 to Formula 6-3, Q 1 To Q 8 At least one of the groups may be represented by any one selected from Formula C-1 to Formula C-5, and the remaining groups may each independently be a hydrogen atom or a deuterium atom. 1 To Q 8 At least one of the substituents may belong to (e.g., be selected from) substituent group 1 as described herein, and the remaining substituents (e.g., selected from Q 1 To Q 8 Any remaining groups in ) may each independently be a hydrogen atom or a deuterium atom.

[0416] Formula C-1

[0417]

[0418] Formula C-2

[0419]

[0420] Formula C-3

[0421]

[0422] Formula C-4

[0423]

[0424] Formula C-5

[0425]

[0426] In formula C-4, Z c Can be NR c11 , O, S or Se. In formula C-5, M may be Si or Ge.

[0427] In Formula C-1 to Formula C-4, R c1 To R c7 Each of R and R is independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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. In one or more embodiments, R c1 To R c7 Each of R may be bonded to an adjacent group to form a ring. c1 To R c7 They may each independently be a hydrogen atom, a deuterium atom, a cyano group, or a substituted or unsubstituted phenyl group.

[0428] In formula C-4 and formula C-5, R c8 To R c11 and R and R are each 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. c8 To R c10 and R are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms. c11 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. c8 To R c10 may be each independently a substituted or unsubstituted methyl group or a substituted or unsubstituted phenyl group, and R c11 It may be a substituted or unsubstituted phenyl group.

[0429] In Formula C-1 to Formula C-4, m21, m24 and m25 may each independently be an integer selected from 0 to 5, m22, m23 and m27 may each independently be an integer selected from 0 to 4, and m26 is an integer selected from 0 to 3.

[0430] When each of m21, m24, and m25 is 0, the fused polycyclic compound of one or more embodiments may not be R c1 , R c4 and R c5 Each of m21, m24 and m25 is 5 and R c1 , R c4 and R c5 The case where each of m21, m24 and m25 is a hydrogen atom may be the same as the case where each of m21, m24 and m25 is 0. When each of m21, m24 and m25 is an integer of 2 or more, a plurality of R c1 , multiple R c4 and multiple R c5 Can be the same or multiple R c1 , multiple R c4 and multiple R c5 At least one of may be different from the others.

[0431] When each of m22, m23, and m27 is 0, the fused polycyclic compound of one or more embodiments may not be R c2 , R c3 and R c7 Each of m22, m23 and m27 is 4 and R c2 , R c3 and R c7 The case where each of m22, m23 and m27 is a hydrogen atom may be the same as the case where each of m22, m23 and m27 is 0. When each of m22, m23 and m27 is an integer of 2 or more, a plurality of R c2 , multiple R c3 and multiple R c7 Can be the same or multiple R c2 , multiple R c3 and multiple R c7 At least one of may be different from the others.

[0432] When m26 is 0, the fused polycyclic compound of one or more embodiments may not be R c6 Where m26 is 3 and R c6 The case where all are hydrogen atoms may be the same as the case where m26 is 0. When m26 is an integer of 2 or more, a plurality of R c6 Can be all the same, or multiple R c6At least one of may be different from the others.

[0433] In Formula 6-1 to Formula 6-3, the same description as in Formula 1 and Formula S can be applied to X 1 , R 1 To R 8 , Z 1 To Z 3 and n1 to n3.

[0434] In one or more embodiments, the fused polycyclic compound represented by Formula 1 of one or more embodiments may include at least one deuterium atom as a substituent. The fused polycyclic compound represented by Formula 1 of one or more embodiments may include a structure in which at least one hydrogen atom is substituted with a deuterium atom.

[0435] The condensed polycyclic compound of one or more embodiments may be any one selected from the compounds represented by compound group 1. At least one functional layer included in the light-emitting element ED of one or more embodiments may include at least one condensed polycyclic compound of the compounds represented by compound group 1. The light-emitting element ED of one or more embodiments may include at least one condensed polycyclic compound selected from the compounds represented by compound group 1 in the emission layer EML (for example, one or more condensed polycyclic compounds selected from the compounds represented by compound group 1 may be included in the emission layer EML).

[0436] Compound Group 1

[0437]

[0438]

[0439]

[0440]

[0441]

[0442]

[0443]

[0444]

[0445]

[0446]

[0447]

[0448]

[0449]

[0450]

[0451]

[0452]

[0453]

[0454] In the embodiment compounds presented in Compound Group 1, "D" refers to a deuterium atom.

[0455] The emission spectrum of the fused polycyclic compound represented by Formula 1 of one or more embodiments has a full width at half maximum (FWHM) of about 10 nm to about 50 nm or about 20 nm to about 40 nm. The emission spectrum of the fused polycyclic compound represented by Formula 1 of one or more embodiments has a FWHM in the described range, thereby improving the luminous efficiency if (for example, when) applied to a light-emitting element. In one or more embodiments, if (for example, when) the fused polycyclic compound of one or more embodiments is used as a blue light-emitting element material for a light-emitting element, the element service life can be improved.

[0456] In one or more embodiments, the fused polycyclic compound represented by Formula 1 of one or more embodiments may be a thermally activated delayed fluorescence emitting material. In addition, the fused polycyclic compound represented by Formula 1 of one or more embodiments may be a thermally activated delayed fluorescence dopant, the difference (ΔE) between the lowest excited triplet energy level (T1 energy level) and the lowest excited singlet energy level (S1 energy level) of which is ST ) is about 0.6 eV or less. The fused polycyclic compound represented by Formula 1 of one or more embodiments may be a thermally activated delayed fluorescent dopant, the difference (ΔE ST ) is about 0.2 eV or less. However, the embodiments of the present disclosure are not limited thereto.

[0457] In one or more embodiments, the fused polycyclic compound represented by Formula 1 of one or more embodiments may include a first substituent in the compound. By adjusting the substitution amount and position of the first substituent, the singlet energy level and the triplet energy level may be appropriately adjusted in the overall compound. Accordingly, the fused polycyclic compound according to one or more embodiments of the present disclosure may exhibit improved thermally activated delayed fluorescence properties.

[0458] The fused polycyclic compound represented by Formula 1 of one or more embodiments may be a luminescent material having a luminescent center wavelength in a wavelength region of about 430 nm to about 490 nm. For example, the fused polycyclic compound represented by Formula 1 of one or more embodiments may be a blue thermally activated delayed fluorescence (TADF) dopant. However, the embodiments of the present disclosure are not limited thereto, and if (for example, when) the fused polycyclic compound of one or more embodiments is used as a luminescent material, the fused polycyclic compound may be used as a dopant material that emits light in one or more appropriate wavelength regions, such as a red emitting dopant and a green emitting dopant.

[0459] The emission layer EML in the light emitting element ED of one or more embodiments may emit delayed fluorescence. For example, the emission layer EML may emit thermally activated delayed fluorescence (TADF).

[0460] In one or more embodiments, the emission layer EML of the light emitting element ED may emit blue light. For example, the emission layer EML of the light emitting element ED of one or more embodiments may emit blue light in a wavelength region of about 490 nm or less. However, the embodiments of the present disclosure are not limited thereto, and the emission layer EML may emit green light or red light.

[0461] In one or more embodiments, the fused polycyclic compound of one or more embodiments may be included in the emission layer EML. The fused polycyclic compound of one or more embodiments may be included in the emission layer EML as a dopant material. The fused polycyclic compound of one or more embodiments may be a thermally activated delayed fluorescent material. The fused polycyclic compound of one or more embodiments may be used as a thermally activated delayed fluorescent dopant. For example, in the light-emitting element ED of one or more embodiments, the emission layer EML may include at least one of the fused polycyclic compounds represented by compound group 1 as described herein as a thermally activated delayed fluorescent dopant. However, the application of the fused polycyclic compound of one or more embodiments is not limited thereto.

[0462] In one or more embodiments, the emission layer EML may include a plurality of compounds. The emission layer EML of one or more embodiments may include a fused polycyclic compound (ie, a first compound) represented by Formula 1, and 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.

[0463] In one or more embodiments, the emission layer EML may include the first compound represented by Formula 1, and further include at least one of a second compound represented by Formula HT-1 and a third compound represented by Formula ET-1.

[0464] In one or more embodiments, the emission layer EML may include a second compound represented by Formula HT-1. In one or more embodiments, the second compound may be used as a hole transport host material in the emission layer EML.

[0465] Formula HT-1

[0466]

[0467] In formula HT-1, M 1 To M 8 Can be N or CR independently 51 For example, all M 1 To M 8 Can be CR 51 In one or more embodiments, selected from M 1 To M 8 Any one of may be N, and the remaining groups (e.g., selected from M 1 To M 8 Any remaining groups in ) may be CR 51 .

[0468] In formula HT-1, L 1 It may be a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. 1 It may be a direct connection, a substituted or unsubstituted phenylene group, a substituted or unsubstituted divalent biphenyl group, and / or a substituted or unsubstituted divalent carbazole group, etc., but one or more embodiments of the present disclosure are not limited thereto.

[0469] In formula HT-1, Y a Can be direct connection, CR 52 R 53 or SiR 54 R 55 For example, the two benzene rings connected to the nitrogen atom of formula HT-1 can be directly connected, In formula HT-1, when Y a In the case of direct attachment, the substituent represented by formula HT-1 may include a carbazole moiety.

[0470] In formula HT-1, Ar a 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. a 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 one or more embodiments of the present disclosure are not limited thereto.

[0471] In formula HT-1, R 51 To R 55 Each of R and R may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted sulfenyl 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. In one or more embodiments, R 51 To R 55 Each of R can combine with adjacent groups to form a ring. 51 To R 55 R may be each independently a hydrogen atom or a deuterium atom. 51 To R 55 Each independently may be an unsubstituted methyl group or an unsubstituted phenyl group.

[0472] In one or more embodiments, the second compound represented by Formula HT-1 may be represented by any one selected from the compounds represented in Compound Group 2. The emission layer EML may include at least one (eg, one or more) selected from the compounds represented in Compound Group 2 as a hole transport host material.

[0473] Compound Group 2

[0474]

[0475]

[0476]

[0477] In the compounds set forth in compound group 2, "D" refers to a deuterium atom, and "Ph" may refer to a substituted or unsubstituted phenyl group. For example, in the compounds set forth in compound group 2, "Ph" may be an unsubstituted phenyl group.

[0478] 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 in the emission layer EML.

[0479] Formula ET-1

[0480]

[0481] In formula ET-1, selected from X a To X c At least one of them may be N, and the remaining groups may be CR56 For example, select X a To X c At least one of may be N and is selected from X a To X c The remaining two can be CR independently. 56 In this case, the third compound represented by Formula ET-1 may include a pyridine moiety. In one or more embodiments, the compound selected from X a To X c At least two of them may be N and are selected from X a To X c The remaining one can be CR 56 In this case, the third compound represented by Formula ET-1 may include a pyrimidine moiety. In one or more embodiments, X a To X c All may be N. In this case, the third compound represented by Formula ET-1 may include a triazine moiety.

[0482] 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.

[0483] In Formula ET-1, b1 to b3 may each independently be an integer selected from 0 to 10.

[0484] In formula ET-1, Ar b To Ar d and R and R are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms. 2 To Ar 4 It may be a substituted or unsubstituted phenyl group or a substituted or unsubstituted carbazolyl group.

[0485] In formula ET-1, L 2 To L 4 Each of L and L may be independently a directly connected, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. In one or more embodiments, when each of b1 to b3 is an integer 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.

[0486] In one or more embodiments, the third compound may be represented by any one of the compounds selected from compound group 3. The light emitting element ED of one or more embodiments may include at least one (eg, one or more) of the compounds selected from compound group 3.

[0487] Compound Group 3

[0488]

[0489]

[0490]

[0491]

[0492]

[0493]

[0494]

[0495] In the compounds set forth in Compound Group 3, "D" refers to a deuterium atom, and "Ph" refers to an unsubstituted phenyl group.

[0496] 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 level 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.

[0497] For example, the absolute value of the triplet energy level (T1 level) of the excited complex formed by the hole transport host and the electron transport host may be about 2.4 electron volts (eV) to about 3.0 eV. In one or more embodiments, the triplet energy level of the excited complex may be a value smaller than the energy gap of each host material. The excited complex may have a triplet energy level of about 3.0 eV or less, which is the energy gap between the hole transport host and the electron transport host.

[0498] In one or more embodiments, the emission layer EML may include a fourth compound in addition to the first to third compounds. The fourth compound may serve as a sensitizer of the emission layer EML. Since energy may be transferred from the fourth compound to the first compound, light emission may occur.

[0499] For example, the emission layer EML may include an organic metal complex including platinum (Pt) as a central metal atom and a ligand bonded to the central metal atom as the fourth compound. In the light emitting element ED of one or more embodiments, the emission layer EML may include a compound represented by Formula D-1 as the fourth compound.

[0500] Formula D-1

[0501]

[0502] In formula D-1, Q 1 To Q 4 They may each independently be C or N.

[0503] In Formula D-1, C1 to C4 may each independently be a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms.

[0504] In formula D-1, L 11 To L 13 Can be directly connected, *-O-*, *-O-*, A substituted or unsubstituted alkylene 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 above, “-*” refers to the part connected to C1 to C4.

[0505] In formula D-1, b11 to b13 may each independently be 0 or 1. When b11 is 0, C1 and C2 may not be connected. When b12 is 0, C2 and C3 may not be connected. When b13 is 0, C3 and C4 may not be connected.

[0506] In formula D-1, R 61 To R 66 Each of R and R may be independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted sulfenyl 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. In one or more embodiments, R 61 To R 66 Each of R may combine with an adjacent group to form a ring. 61 To R 66Each independently may be a substituted or unsubstituted methyl group or a substituted or unsubstituted tert-butyl group.

[0507] In Formula D-1, d1 to d4 may each independently be an integer selected from 0 to 4. In Formula D-1, when d1 to d4 are 0, the fourth compound may not be R 61 To R 64 Where d1 to d4 are 4 and R 61 To R 64 The case where d1 to d4 are hydrogen atoms may be the same as the case where d1 to d4 are 0. When d1 to d4 are integers of 2 or more, a plurality of R 61 To multiple R 64 Each of the R 61 To multiple R 64 At least one of may be different.

[0508] In Formula D-1, C1 to C4 may each independently be a substituted or unsubstituted hydrocarbon ring group or a substituted or unsubstituted heterocyclic group represented by any one selected from C-1 to C-4.

[0509]

[0510] 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 88 Each may independently be a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms, or combine with an adjacent group to form a ring.

[0511] In one or more embodiments, in C-1 to C-4, is the part connected to the central metal atom Pt, and "-*" corresponds to the part connected to the adjacent ring group (C1 to C4) or the linker (L 11 To L 13 ) connected part.

[0512] The emission layer EML of one or more embodiments may include a first compound (which is a fused polycyclic compound) and at least one of the second compound to the fourth compound. For example, the emission layer EML may include a first compound, a second compound, and a third compound. In the emission layer EML, the second compound and the third compound may form an excited complex, and in the excited complex, energy transfer to the first compound may occur, and light emission may occur.

[0513] In one or more 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 in the exciplex, energy transfer to the fourth compound and the first compound may occur, and light emission may occur. In one or more embodiments, the fourth compound may be a sensitizer. In the light-emitting element ED of one or more embodiments, the fourth compound included in the emission layer EML may act as a sensitizer and may play a role in transferring energy from the host to the first compound as a light-emitting dopant. For example, the fourth compound that plays the role of an auxiliary dopant may accelerate the energy transfer to the first compound as a light-emitting dopant and increase the luminescence ratio of the first compound. Accordingly, the luminous efficiency of the emission layer EML of one or more embodiments may be improved. In one or more embodiments, when the energy transfer to the first compound increases, the excitons formed in the emission layer EML may not accumulate but emit light quickly, and the degradation of the light-emitting element ED may be reduced. Accordingly, the service life of the light-emitting element ED of one or more embodiments may be increased.

[0514] The light-emitting element ED of one or more embodiments includes 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., synchronously) include: the second compound and the third compound (which are two different hosts), the first compound emitting delayed fluorescence, and the fourth compound being an organic metal complex, and may show excellent or appropriate luminous efficiency properties.

[0515] In one or more embodiments, the fourth compound represented by Formula D-1 may be represented by any one (e.g., at least one) selected from the compounds represented in Compound Group 4. The emission layer EML may include at least one (e.g., one or more) selected from the compounds represented in Compound Group 4 as a sensitizer material.

[0516] Compound Group 4

[0517]

[0518]

[0519] In the compounds set forth in Compound Group 4, "D" refers to a deuterium atom.

[0520] In one or more embodiments, the light-emitting element ED of one or more embodiments may include a plurality of emission layers EML. A plurality of emission layers EML may be stacked and provided in sequence, and, for example, the light-emitting element ED including a plurality of emission layers EML may emit white light. The light-emitting element ED including a plurality of emission layers EML may be a light-emitting element of a series structure. When the light-emitting element ED includes a plurality of emission layers EML, at least one emission layer EML may include the first compound represented by Formula 1 of one or more embodiments. In one or more embodiments, when the light-emitting element ED includes a plurality of emission layers EML, at least one emission layer EML may include all of the first compound, the second compound, the third compound, and the fourth compound.

[0521] In the light-emitting element ED of one or more embodiments, when the emission layer EML includes all of the first compound, the second compound, the third compound, and the fourth compound, the amount of the first compound may be about 0.1 wt % to about 5 wt % based on the total weight of the first compound, the second compound, the third compound, and the fourth compound. However, one or more embodiments of the present disclosure are not limited thereto. When the amount of the first compound satisfies the ratio described herein, the energy transferred from the second compound and the third compound to the first compound may increase, and accordingly, the luminous efficiency and the device life may increase.

[0522] In the emission layer EML, the total amount of the second compound and the third compound may be an amount remaining excluding the amount of the first compound and the fourth compound. For example, based on the total weight of the first compound, the second compound, the third compound and the fourth compound, the total amount of the second compound and the third compound may be about 65 wt % to about 95 wt %.

[0523] In the total amount of the second compound and the third compound, a weight ratio of the second compound to the third compound may be about 3:7 to about 7:3.

[0524] When the total amount of the second compound and the third compound satisfies the ratio described herein, the charge balance property in the emission layer EML can be improved, and the luminous efficiency and device life can be improved. When the total amount of the second compound and the third compound deviates from the ratio range described herein, the charge balance in the emission layer EML can be destroyed, the luminous efficiency can be reduced, and the device can be easily degraded.

[0525] When the emission layer EML includes the fourth compound, the amount of the fourth compound may be about 4 wt % to about 30 wt % based on the total weight of the first compound, the second compound, the third compound, and the fourth compound in the emission layer EML. However, one or more embodiments of the present disclosure are not limited thereto. When the amount of the fourth compound satisfies the amount described herein, the energy transferred from the host to the first compound as a light-emitting dopant may be increased, and the emission ratio may be improved. Accordingly, the luminous efficiency of the emission layer EML may be improved. When the amount ratio of the first compound, the second compound, the third compound, and the fourth compound included in the emission layer EML satisfies the amount ratio described herein, excellent or appropriate luminous efficiency and long service life may be achieved.

[0526] In the light emitting element ED of one or more embodiments, the emission layer EML may further include an anthracene derivative, a pyrene derivative, a fluoranthene derivative, a 1,2-triphenylene derivative, a dihydrobenzanthracene derivative, or a triphenylene derivative. For example, the emission layer EML may include an anthracene derivative or a pyrene derivative.

[0527] exist Figures 3 to 6 In the light-emitting element ED of the embodiment shown in the figure, 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.

[0528] Formula E-1

[0529]

[0530] In formula E-1, R 31 To R 40 Each of R and R may be independently a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted silyl group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or may be combined with an adjacent group to form a ring. In one or more embodiments, R 31 To R 40 It may combine with an adjacent group to form a saturated hydrocarbon ring, an unsaturated hydrocarbon ring, a saturated heterocyclic ring, or an unsaturated heterocyclic ring.

[0531] In Formula E-1, "c" and "d" may each independently be an integer selected from 0 to 5.

[0532] Formula E-1 may be represented by any one selected from Compound E1 to Compound E19.

[0533]

[0534]

[0535] 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.

[0536] Formula E-2a

[0537]

[0538] In Formula E-2a, "a" may be an integer selected from 0 to 10, L a It may be a directly connected, substituted or unsubstituted arylene group of 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group of 2 to 30 ring carbon atoms. In one or more embodiments, when "a" is an integer of 2 or more, 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.

[0539] In one or more embodiments, in Formula E-2a, A 1 To A 5 Can be N or CR independently i . R a To R i Each may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms, or may combine with an adjacent group to form a ring. a To R i It may combine with an adjacent group to form a hydrocarbon ring or a heterocyclic ring including N, O and / or S etc. as ring-constituting atoms.

[0540] In one or more embodiments, in formula E-2a, selected from A 1 To A 5 Two or three of them may be N, and the remaining group may be CR i .

[0541] Formula E-2b

[0542]

[0543] In Formula E-2b, Cbz1 and Cbz2 may each independently be an unsubstituted carbazolyl group or a carbazolyl group substituted with an aromatic group having 6 to 30 ring carbon atoms. b It may be a directly linked, substituted or unsubstituted arylene group of 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group of 2 to 30 ring carbon atoms. "b" is an integer selected from 0 to 10, and 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.

[0544] 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 shown in compound group E-2 are only for illustration, and the compounds represented by formula E-2a or formula E-2b are not limited to the compounds represented in compound group E-2.

[0545] Compound Group E-2

[0546]

[0547]

[0548]

[0549] The emission layer EML may further include a commonly used material which is very suitable in the art as a host material. For example, the emission layer EML may include at least one of bis(4-(9H-carbazole-9-yl)phenyl)diphenylsilane (BCPDS), (4-(1-(4-(diphenylamino)phenyl)cyclohexyl)phenyl)diphenyl-phosphine oxide (POPCPA), bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO), 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), 1,3-bis(carbazole-9-yl)benzene (mCP), 2,8-bis(diphenylphosphino)dibenzo[b,d]furan (PPF), 4,4′,4″-tri(carbazole-9-yl)triphenylamine (TCTA), and 1,3,5-tri(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBi) as a host material. However, one or more embodiments of the present disclosure are not limited thereto. For example, tris(8-hydroxyquinoline)aluminum (Alq 3), 9,10-di(naphthalene-2-yl)anthracene (ADN), 2-tert-butyl-9,10-di(naphthalene-2-yl)anthracene (TBADN), distyrylarene (DSA), 4,4′-bis(9-carbazolyl)-2,2′-dimethyl-biphenyl (CDBP), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), hexaphenylcyclotriphosphazene (CP1), 1,4-bis(triphenylsilyl)benzene (UGH2), hexaphenylcyclotrisiloxane (DPSiO 3 ) and / or octaphenylcyclotetrasiloxane (DPSiO 4 ) etc. can be used as the main material.

[0550] 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.

[0551] Formula Ma

[0552]

[0553] In formula Ma, Y 1 To Y 4 and Z 1 To Z 4 Can be independently CR 1 or N, and R 1 To R 4 Each of them may be independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted amine group, a substituted or unsubstituted thiol group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, or may be combined with an adjacent group to form a ring. In formula Ma, "m" may be 0 or 1, and "n" may be 2 or 3. In formula Ma, when "m" is 0, "n" is 3, and when "m" is 1, "n" is 2.

[0554] The compound represented by the formula Ma may be used as a phosphorescent dopant.

[0555] 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 only for illustration, and the compound represented by formula Ma is not limited to the compounds represented by compound M-a1 to compound M-a25.

[0556]

[0557]

[0558]

[0559] The emission layer EML may further include a compound selected from any one of Formulas Fa to Fc. The compounds represented by Formulas Fa to Fc may be used as a fluorescent dopant material.

[0560] Formula

[0561]

[0562] In the formula Fa, R a To R j The two of them can be independently *-NAr 1 Ar 2 Replace. a To R j Unreacted*-NAr 1 Ar 2 The remaining substituted groups may each independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms. 1 Ar 2 in Ar 1 and Ar 2 Each of them may be independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 and Ar 2 At least one of may be a heteroaryl group including O or S as a ring-forming atom.

[0563] Formula Fb

[0564]

[0565] In formula Fb, R a and R b Each may independently be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring carbon atoms, and / or may combine with an adjacent group to form a ring. Ar 1 To Ar 4 Each may independently be a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0566] In Formula Fb, U and V may each independently be a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms. 1 To Ar 4 At least one of may be a heteroaryl group including O or S as a ring-forming atom.

[0567] In formula Fb, the number of rings represented by U and V may be 0 or 1 independently of each other. For example, in formula Fb, when the number of U or V is 1, one ring forms a condensed ring at the portion marked by U or V, and when the number of U or V is 0, there is no ring at the portion marked by U or V. 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 condensed ring with fluorene core of formula Fb may be a ring compound with four rings. In one or more embodiments, when the number of both U and V (for example, at the same time) is 0, the condensed ring with fluorene core of formula Fb may be a ring compound with three rings. In one or more embodiments, when the number of both U and V (for example, at the same time) is 1, the condensed ring with fluorene core of formula Fb may be a ring compound with five rings.

[0568] Formula Fc

[0569]

[0570] In Formula Fc, A 1 and A 2 can be independently O, S, Se or NR m , and R m R may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 To R 11 Each may independently be a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted boron group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, or may combine with an adjacent group to form a ring.

[0571] In Formula Fc, A 1 and A 2 Each of the substituents may independently combine with the adjacent ring to form a fused ring. 1 and A 2 Can be independently NR m When A1 Can be used with R 4 or R 5 Combine to form a ring. In one or more embodiments, A 2 Can be used with R 7 or R 8 Combine to form a ring.

[0572] In one or more embodiments, the emission layer EML may include styryl derivatives (e.g., 1,4-bis[2-(3-N-ethylcarbazolyl)vinyl]benzene (BCzVB), 4-(di-p-tolylamino)-4′-[(di-p-tolylamino)styryl]stilbene (DPAVB), N-(4-((E)-2-(6-((E)-4-(diphenylamino)styryl)naphthalen-2-yl)vinyl)phenyl)-N-phenylaniline (N-BDAVBi), and 4,4′-bis[2-(4-(N,N-diphenylamino)phenyl)vinyl]biphenyl (DPAVBi)), perylene and its derivatives (e.g., 2,5,8,11-tetra-tert-butylperylene (TBP)), and / or pyrene and its derivatives (e.g., 1,1′-dipyrene, 1,4-dipyrenylbenzene, and 1,4-bis(N,N-diphenylamino)pyrene), and the like as appropriate dopant materials.

[0573] The emission layer EML may include a suitable phosphorescent dopant material. For example, the phosphorescent dopant may use a metal complex including iridium (Ir), platinum (Pt), osmium (Os), gold (Au), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) or thulium (Tm). For example, bis (4,6-difluorophenylpyridyl-N, C2′) picolinyl iridium (III) (FIrpic), bis (2,4-difluorophenylpyridyl)-tetrakis (1-pyrazolyl) borate iridium (III) (FIr6) or octaethylporphyrin platinum (PtOEP) may be used as a phosphorescent dopant. However, one or more embodiments of the present disclosure are not limited thereto.

[0574] The emissive layer may include quantum dots.

[0575] In the description, quantum dots refer to crystals of semiconductor compounds. Quantum dots can emit light in one or more appropriate emission wavelength regions depending on the size of the crystal. Quantum dots can emit light in one or more appropriate emission wavelength regions by controlling the ratio of elements in the quantum dot compound.

[0576] The diameter of a quantum dot can be, for example, from about 1 nanometer (nm) to about 10 nm.

[0577] Quantum dots can be synthesized by chemical bath deposition, metal organic chemical vapor deposition (MOCVD), molecular beam epitaxy (MBE), or similar processes.

[0578] Chemical bath deposition is a method of mixing an organic solvent and a precursor material and then growing quantum dot particle crystals. During the growth of quantum dot particle crystals, the organic solvent can naturally act as a dispersant coordinated on the surface of the quantum dot particle crystals, and the growth of the quantum dot particle crystals can be controlled. Accordingly, if (for example, when) compared with vapor deposition methods including metal organic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE), chemical bath deposition is more advantageous, and the growth of quantum dot particle crystals can be controlled or selected through a low-cost process.

[0579] The emission layer EML may include a quantum dot material. The core of the quantum dot may be selected from a group consisting of II-VI compounds, III-VI compounds, I-III-VI compounds, III-V compounds, III-II-V compounds, IV-VI compounds, II-IV-V compounds, IV elements, IV compounds, and combinations thereof.

[0580] The II-VI Group compound may 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 (e.g., any suitable) mixtures thereof; a binary 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 ternary compound selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and mixtures thereof. In one or more embodiments, the II-VI Group compound may further include a Group I metal and / or a Group IV element. The I-II-VI Group compound may be selected from CuZnS, and the II-IV-VI Group compound may be selected from ZnSnS, etc. The I-II-IV-VI Group compound may be selected from the following: selected from Cu 2 ZnSnS 2 , Cu 2 ZnSnS 4 , Cu 2 ZnSnSe 4 、Ag 2 ZnSnS 2 and mixtures thereof.

[0581] Group III-VI compounds may include binary compounds (such as In 2 S 3 andIn 2 Se 3 ), ternary compounds (such as InGaS 3 and InGaSe 3 ) or (e.g., any suitable) combination thereof.

[0582] The Group I-III-VI compound may be (e.g., selected from): a ternary compound in the group including (e.g., selected from): AgInS, AgInS 2 、CuInS、CuInS 2 、AgGaS 2 、CuGaS 2 、CuGaO 2 、AgGaO 2 、AgAlO 2 and mixtures thereof (e.g., consisting thereof); or quaternary compounds (such as AgInGaS 2 and / or CuInGaS 2 ).

[0583] The III-V compound may be selected from the group consisting of: a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof, a ternary compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof, and a quaternary compound selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. In one or more embodiments, the III-V compound may further include a Group II metal. For example, InZnP or the like may be selected as the Group III-II-V compound.

[0584] The Group IV-VI compounds may be selected from the group consisting of: binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe and mixtures thereof, ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and mixtures thereof, and quaternary compounds selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe and mixtures thereof.

[0585] The II-IV-V group compound can be selected from the following: selected from ZnSnP, ZnSnP 2 、ZnSnAs 2 、ZnGeP 2 、ZnGeAs 2 、CdSnP 2 、CdGeP 2 and mixtures thereof.

[0586] The Group IV element may be selected from the group consisting of Si, Ge, and mixtures thereof. The Group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

[0587] Each element included in the multi-element compound (such as a binary compound, a ternary compound, and a quaternary compound) may be present in the particle at a substantially uniform concentration or a non-substantially uniform concentration. For example, the aforementioned formula indicates 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 indicate AgIn x Ga 1- x S 2 (0 <x<1)。

[0588] In this case, the binary compound, ternary compound or quaternary compound may be present in the particle at a substantially uniform concentration or may be present in the same particle in a partially different concentration distribution state. In one or more embodiments, a core / shell structure in which one quantum dot encapsulates another quantum dot may be possible. The interface between the core and the shell may have a concentration gradient in which the concentration of the element present in the shell decreases toward the center of the core.

[0589] In some embodiments, the quantum dot may have a core / shell structure as described herein, which includes a core containing nanocrystals and a shell encapsulating the core. The shell of the quantum dot may act as a protective layer for preventing or reducing the chemical denaturation of the core to maintain semiconductor properties and / or a charging layer for imparting electrophoretic properties to the quantum dot. The shell may have a single layer or multiple layers. Examples of the shell of the quantum dot may include metal oxides or non-metal oxides, semiconductor compounds, or combinations thereof.

[0590] For example, metal oxides or non-metal oxides may include binary compounds (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 and / or NiO) or ternary compounds (such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 and CoMn 2 O 4 ), but one or more embodiments of the present disclosure are not limited thereto.

[0591] Furthermore, the 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 one or more embodiments of the present disclosure are not limited thereto.

[0592] The quantum dots may have a full width at half maximum (FWHM) of an emission wavelength spectrum of about 45 nm or less, about 40 nm or less, or about 30 nm or less. Within the described range, color purity or color reproducibility may be improved. In one or more embodiments, light emitted by such quantum dots may be emitted in all directions, and the light viewing angle properties may be improved.

[0593] In one or more embodiments, the shape of the quantum dot can be a shape commonly used in the art without specific limitation. More specifically, the shape of spherical, pyramidal, multi-armed or cubic nanoparticles, nanotubes, nanowires, nanofibers and / or nanoplates can be used.

[0594] Since the size of the quantum dots or the ratio of elements in the quantum dot compound is adjusted, the energy band gap can be controlled or selected accordingly to obtain one or more appropriate wavelengths of light from the quantum dot emission layer. Therefore, by using quantum dots as described herein (using quantum dots of different sizes or quantum dots with different ratios of elements in the quantum dot compound), a light-emitting element that emits one or more appropriate wavelengths of light can be obtained. For example, the size of the quantum dots or the ratio of elements in the quantum dot compound can be adjusted to emit red light, green light, and / or blue light. In one or more embodiments, the quantum dots can be configured to emit white light by combining one or more appropriate colors of light.

[0595] In the light emitting element ED of the embodiment, as Figures 3 to 6 As shown in FIG. 1 , the electron transport region ETR is provided on the emission layer EML. The electron transport region ETR may include at least one of the hole blocking layer HBL, the electron transport layer ETL, and the electron injection layer EIL. However, one or more embodiments of the present disclosure are not limited thereto.

[0596] The electron transport region ETR may have a single-layer structure formed using a single material, a single-layer structure formed using a plurality of different materials, or a multi-layer structure having a plurality of layers formed using a plurality of different materials.

[0597] For example, the electron transport region ETR may have a single-layer structure of an electron injection layer EIL or an electron transport layer ETL, or a single-layer structure formed using an electron injection material and an electron transport material. In addition, the electron transport region ETR may have a single-layer structure formed using a plurality of different materials, or a structure in which an electron transport layer ETL / electron injection layer EIL or a hole blocking layer HBL / electron transport layer ETL / electron injection layer EIL is stacked from an emission layer EML without limitation. The thickness of the electron transport region ETR may be, for example, about 100 Å. to about

[0598] The electron transport region ETR may be formed using one or more appropriate methods such as vacuum deposition, spin coating, casting, Langmuir-Brokett (LB), inkjet printing, laser printing, and laser induced thermal imaging (LITI).

[0599] The electron transport region ETR may include a compound represented by Formula ET-2.

[0600] Formula ET-2

[0601]

[0602] In formula ET-2, selected from X 1 To X 3 At least one of the groups may be N, and the remaining groups (e.g., selected from X 1 To X 3 Any remaining groups in ) may be CR a . R a Ar may be a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms. 1 To Ar 3 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 aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms.

[0603] In Formula ET-2, "a" to "c" may each independently be an integer selected from 0 to 10. In Formula ET-2, L 1 To L 3 Each of the above may be independently a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms. In one or more embodiments, when "a" to "c" are integers 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.

[0604] The electron transport region ETR may include an anthracene compound. However, one or more 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), CNNPTRZ (4'-(4-(4-(4,6-diphenyl-1,3,5-triazine-2-yl)phenyl)naphthalen-1-yl)-[1,1'-biphenyl]-4-carbonitrile), and mixtures thereof, without limitation.

[0605] In one or more embodiments, the electron transport region ETR may include any one of the compounds selected from Compound Group 3.

[0606] The electron transport region ETR may include at least one selected from the group consisting of compounds ET1 to ET36.

[0607]

[0608]

[0609]

[0610] In one or more embodiments, the electron transport region ETR may include a metal halide (such as LiF, NaCl, CsF, RbCl, RbI, CuI and KI), a lanthanide metal (such as Yb), or a co-deposited material of a metal halide and a lanthanide metal. For example, the electron transport region ETR may include KI:Yb, RbI:Yb and / or LiF:Yb as a co-deposited material. In one or more embodiments, the electron transport region ETR may use a metal oxide (such as Li 2O and BaO) or 8-hydroxyquinoline lithium (Liq). However, one or more embodiments of the present disclosure are not limited thereto. The electron transport region ETR may also be formed using a mixture material of an electron transport material and an insulating organic metal salt. The insulating organic metal salt may be a material having an energy band gap of about 4 eV or greater. For example, the insulating organic metal salt may include, for example, a metal acetate, a metal benzoate, a metal acetoacetate, a metal acetylacetonate, or a metal stearate.

[0611] In addition to the aforementioned materials, the electron transport region ETR may include at least one selected from 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), diphenyl(4-(triphenylsilyl)phenyl)phosphine oxide (TSPO1), and 4,7-diphenyl-1,10-phenanthroline (Bphen). However, one or more embodiments of the present disclosure are not limited thereto.

[0612] The electron transport region ETR may include a compound of the electron transport region ETR in at least one selected from the electron injection layer EIL, the electron transport layer ETL, and the hole blocking layer HBL.

[0613] When the electron transport region ETR includes an electron transport layer ETL, the thickness of the electron transport layer ETL may be about 100 Å. to about For example, about to about When the thickness of the electron transport layer ETL satisfies the range described herein, satisfactory electron transport properties can be obtained without significantly increasing the driving voltage. When the electron transport region ETR includes the electron injection layer EIL, the thickness of the electron injection layer EIL may be about to about or about to about When the thickness of the electron injection layer EIL satisfies the range described herein, satisfactory electron injection properties may be obtained without significantly increasing driving voltage.

[0614] The second electrode EL2 is provided on the electron transport region ETR. The second electrode EL2 may be a common electrode. The second electrode EL2 may be a cathode or an anode, but one or more 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.

[0615] 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 include a transparent metal oxide, such as ITO, IZO, ZnO and / or ITZO.

[0616] When the second electrode EL2 is a transflective electrode or a reflective electrode, the second electrode EL2 may include at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, W, a compound containing the same, or a mixture thereof (e.g., AgMg, AgYb or MgYb), or a multilayer structure material such as LiF / Ca or LiF / Al. In one or more embodiments, the second electrode EL2 may have a multilayer structure including a reflective layer or a transflective layer formed using the materials described herein and a transparent conductive layer formed using ITO, IZO, ZnO and / or ITZO, etc. For example, the second electrode EL2 may include the aforementioned metal material, a combination of two or more metal materials selected from the aforementioned metal materials, or an oxide of the aforementioned metal material.

[0617] In one or more 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.

[0618] In one or more embodiments, a capping layer CPL may be further disposed on the second electrode EL2 in the light emitting element ED of one or more embodiments. The capping layer CPL may include a multi-layer or a single layer.

[0619] In one or more embodiments, the capping layer CPL may be an organic layer or an inorganic layer. For example, when the capping layer CPL includes an inorganic material, the inorganic material may include an alkali metal compound (such as LiF), an alkaline earth metal compound (such as MgF 2 )、SiON、SiN x and / or SiO y wait.

[0620] For example, when the capping layer CPL includes an organic material, the organic material may include 2,2′-dimethyl-N,N′-di[(1-naphthyl)-N,N′-diphenyl]-1,1′-biphenyl-4,4′-diamine (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 include epoxy resin or acrylate (such as methacrylate). In one or more embodiments, the capping layer CPL may include at least one of compounds P1 to P5, but one or more embodiments of the present disclosure are not limited thereto.

[0621]

[0622]

[0623] In one or more embodiments, the capping layer CPL may have a refractive index of about 1.6 or more. For example, the capping layer CPL may have a refractive index of about 1.6 or more with respect to light in a wavelength range of about 550 nm to about 660 nm.

[0624] Figures 7 to 10 are cross-sectional views of display devices according to one or more embodiments. Figures 7 to 10 In the explanation of the display device of the embodiment, the same explanation as for Figures 1 to 6 The explanations are repeated in part, and different features will be mainly explained.

[0625] refer to Figure 7 According to one or more embodiments, the display device DD-a may include a display panel DP including a display device layer DP-ED, a light control layer CCL disposed on the display panel DP, and a color filter layer CFL. Figure 7 In one or more embodiments shown in FIG. 1 , the display panel DP includes a base layer BS, a circuit layer DP-CL provided on the base layer BS, and a display device layer DP-ED, and the display device layer DP-ED may include a light emitting element ED.

[0626] 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 same structure of the light emitting element ED can be applied to Figure 7 The structure of the light-emitting element ED is shown in FIG.

[0627] The emission layer EML of the light emitting element ED included in the display device DD-a according to one or more embodiments may include the condensed polycyclic compound of one or more embodiments described herein.

[0628] refer to Figure 7 , the emission layer EML may be arranged in the opening OH defined by the pixel defining layer PDL. For example, the emission layer EML divided by the pixel defining layer PDL and correspondingly provided to each of the light emitting areas PXA-R, PXA-G, and PXA-B may emit light in substantially the same wavelength region. In the display device DD-a of one or more embodiments, the emission layer EML may emit blue light. In one or more embodiments, unlike the accompanying drawings, in one or more embodiments, the emission layer EML may be provided as a common layer of all the light emitting areas PXA-R, PXA-G, and PXA-B.

[0629] The light control layer CCL may be arranged on the display panel DP. The light control layer CCL may include a light converter. The light converter may be a quantum dot or a phosphor. The light converter may convert the wavelength of the provided light and then emit the light. For example, the light control layer CCL may be a layer including quantum dots or a layer including phosphors.

[0630] The light-controlling layer CCL may include a plurality of light-controlling parts CCP1, CCP2, and CCP3. The light-controlling parts CCP1, CCP2, and CCP3 may be separated from each other.

[0631] refer to Figure 7 , the separation pattern BMP may be disposed between the separated light-controlling parts CCP1, CCP2, and CCP3, but one or more embodiments of the present disclosure are not limited thereto. Figure 7 , the separation pattern BMP is illustrated as not overlapping the light-controlling portions CCP1, CCP2, and CCP3, but at least a portion of the edges of the light-controlling portions CCP1, CCP2, and CCP3 may overlap the separation pattern BMP.

[0632] The light control layer CCL may include: a first light control part CCP1, which includes a first quantum dot QD1 that converts a first color light provided from the light emitting element ED into a second color light; a second light control part CCP2, which includes a second quantum dot QD2 that converts the first color light into a third color light; and a third light control part CCP3 that transmits the first color light. In one or more embodiments, the first light control part CCP1 may provide red light as the second color light, and the second light control part CCP2 may provide green light as the third color light. The third light control part CCP3 may transmit and provide blue light provided from the light emitting element ED as the first color light. 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 quantum dots QD1 and QD2, the same contents as those described herein may apply.

[0633] In one or more 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) quantum dots but include a scatterer SP.

[0634] The scatterer SP may be an inorganic particle. For example, the scatterer SP may include a particle selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2and hollow silica. The scatterer SP may include a member selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2 and hollow silica, or may be selected from TiO 2 、ZnO、Al 2 O 3 、SiO 2 and a mixture of two or more materials in hollow silica.

[0635] Each of the first light-control part CCP1, the second light-control part CCP2, and the third light-control part CCP3 may 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.

[0636] The base resins BR1, BR2 and BR3 are media in which the quantum dots QD1 and QD2 and the scatterers SP are dispersed, and may be composed of one or more suitable resin compositions that may be generally referred to as binders. For example, the base resins BR1, BR2 and BR3 may be acrylic resins, urethane resins, silicone resins and / or epoxy resins, etc. The base resins BR1, BR2 and BR3 may be transparent resins. In one or more embodiments, the first base resin BR1, the second base resin BR2 and the third base resin BR3 may be the same or different from each other.

[0637] The light control layer CCL may include an isolation layer BFL1. The isolation layer BFL1 may prevent the penetration of moisture and / or oxygen (hereinafter, referred to as "moisture / oxygen") (for example, play a role in blocking the penetration of moisture and / or oxygen). The isolation layer BFL1 may block or reduce the exposure of the light control parts CCP1, CCP2, and CCP3 to moisture / oxygen. In one or more embodiments, the isolation layer BFL1 may cover the light control parts CCP1, CCP2, and CCP3. In one or more embodiments, the color filter layer CFL, which will be explained later, may include an isolation layer BFL2 arranged on the light control parts CCP1, CCP2, and CCP3.

[0638] The isolation layer BFL1 and the isolation layer BFL2 may include at least one inorganic layer. For example, the isolation layer BFL1 and the isolation layer BFL2 may be formed by including an inorganic material. For example, the isolation layer BFL1 and the isolation layer BFL2 may be formed by including silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride, or a metal film that ensures light transmittance. In one or more embodiments, the isolation layer BFL1 and the isolation layer BFL2 may further include an organic layer. The isolation layer BFL1 and the isolation layer BFL2 may be composed of a single layer or a plurality of layers.

[0639] In the display device DD-a of one or more embodiments, the color filter layer CFL may be disposed on the light control layer CCL. For example, the color filter layer CFL may be directly disposed on the light control layer CCL. In this case, the isolation layer BFL2 may not be provided.

[0640] The color filter layer CFL may include filters CF1, CF2, and CF3. Each of the first to third filters CF1, CF2, and CF3 may be arranged corresponding to the red light emitting area PXA-R, the green light emitting area PXA-G, and the blue light emitting area PXA-B, respectively.

[0641] The color filter layer CFL may include a first filter CF1 transmitting a second color light, a second filter CF2 transmitting a third color light, and a third filter CF3 transmitting 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. Each of the filters CF1, CF2, and CF3 may include a polymer photosensitive resin and / or a pigment or dye. The first filter CF1 may include a red pigment or a red dye, the second filter CF2 may include a green pigment or a green dye, and the third filter CF3 may include a blue pigment or a dye.

[0642] One or more embodiments of the present disclosure are not limited to the foregoing description. For example, the third filter CF3 may not include (e.g., may exclude) a pigment or dye. The third filter CF3 may include a polymer photosensitive resin without including a pigment or dye. The third filter CF3 may be transparent. The third filter CF3 may be formed using a transparent photosensitive resin.

[0643] 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 be provided as one body without being distinguished.

[0644] In one or more embodiments, the color filter layer CFL may further include a light blocking portion. The light blocking portion may be a black matrix. The light blocking portion may be formed by including an organic light blocking material or an inorganic light blocking material including a black pigment or a black dye. The light blocking portion may prevent or reduce light leakage and divide adjacent filters CF1, CF2, and CF3.

[0645] On the color filter layer CFL, a base substrate BL may be arranged. The base substrate BL may be a member providing a base surface on which the color filter layer CFL and / or the light control layer CCL, etc. are arranged. The base substrate BL may be a glass substrate, a metal substrate, and / or a plastic substrate, etc. However, the embodiments of the present disclosure are not limited thereto, and the base substrate BL may be an inorganic layer, an organic layer, or a composite material layer. In one or more embodiments, the base substrate BL may not be provided.

[0646] Figure 8 1 is a cross-sectional view showing a portion of a display device 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 arranged opposite to each other, and a plurality of light emitting structures OL-B1, OL-B2, and OL-B3 stacked in sequence in the thickness direction and provided between the first electrode EL1 and the second electrode EL2. Each of the light emitting structures OL-B1, OL-B2, and OL-B3 may include an emission layer EML ( Figure 7 ), and a hole transport region HTR ( Figure 7 ) and the electron transport region ETR ( Figure 7 ).

[0647] 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 of a tandem structure including a plurality of emission layers EML.

[0648] exist Figure 8 In one or more embodiments shown in , the light emitted from the light emitting structures OL-B1, OL-B2, and OL-B3 may all be blue light. However, one or more embodiments of the present disclosure are not limited thereto, and the wavelength regions of the light emitted from the light emitting structures OL-B1, OL-B2, and OL-B3 may be 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 in different wavelength regions may emit white light.

[0649] Between adjacent light emitting structures OL-B1, OL-B2, and OL-B3, charge generation layers CGL1 and CGL2 may be disposed. The charge generation layers CGL1 and CGL2 may include p-type or p-like charge generation layers (e.g., p-charge generation layers) and / or n-type or n-like charge generation layers (e.g., n-charge generation layers).

[0650] At least one of the light emitting structures OL-B1, OL-B2, and OL-B3 included in the display devices DD-TD of one or more embodiments may contain the fused polycyclic compound of one or more embodiments described herein. For example, at least one of the multiple emission layers included in the light emitting elements ED-BT may include the fused polycyclic compound of one or more embodiments.

[0651] Fig. 9 is a cross-sectional view showing a display device according to one or more embodiments of the present disclosure. Fig.10 is a cross-sectional view showing a display device according to one or more embodiments of the present disclosure.

[0652] refer to 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 formed by stacking two emission layers. Figure 2 Compared to the display device DD of one or more embodiments shown in FIG. Fig. 9 The display device DD-b of one or more embodiments shown in FIG. 1 is different in that each of the first to third light-emitting elements ED-1, ED-2, and ED-3 includes two emission layers stacked in the thickness direction. In 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.

[0653] 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 one or more 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. An emission auxiliary portion OG may be arranged 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.

[0654] The emission auxiliary part OG may include a single layer or a plurality of 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 (not shown), a charge generation layer (not shown), and a hole transport region (not shown) stacked in sequence. The emission auxiliary part OG may be provided as a common layer for all of the first to third light-emitting elements ED-1, ED-2, and ED-3. However, one or more embodiments of the present disclosure are not limited thereto, and the emission auxiliary part OG may be patterned and provided in an opening OH defined by a pixel defining layer PDL.

[0655] 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 electron transport region ETR and the emission auxiliary portion OG. 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 emission auxiliary portion OG and the hole transport region HTR.

[0656] 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 in sequence. 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 in sequence. 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 in sequence.

[0657] In one or more embodiments, an optical auxiliary layer PL may be disposed on the display device layer DP-ED. The optical auxiliary layer PL may include a polarizing layer. The optical auxiliary layer PL may be disposed on the display panel DP and may control reflected light of external light at the display panel DP. Unlike the accompanying drawings, the display device DD-b according to one or more embodiments may not provide an optical auxiliary layer PL.

[0658] Fig. 9 At least one emission layer included in the display device DD-b of one or more embodiments illustrated in the specification may include the fused polycyclic compound of one or more embodiments described herein. For example, in one or more embodiments, at least one of the first blue emission layer EML-B1 and the second blue emission layer EML-B2 may include the fused polycyclic compound of one or more embodiments.

[0659] and Figure 8 and Fig. 9 different, Fig.10 The display device DD-c in FIG. 1 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 arranged opposite to each other, and first to fourth light emitting structures OL-B1, OL-B2, OL-B3, and OL-C1 stacked in sequence in the thickness direction between the first electrode EL1 and the second electrode EL2. 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 sequence in the thickness direction. Between the first to fourth light emitting structures OL-B1, OL-B2, OL-B3, and OL-C1, charge generation layers CGL1, CGL2, and CGL3 may be arranged. For example, the first charge generation layer CGL1 is arranged between the first light emitting structure OL-B1 and the fourth light emitting structure OL-C1. The second charge generation layer CGL2 is arranged between the first light emitting structure OL-B1 and the second light emitting structure OL-B2. The third charge generation layer CGL3 is disposed between the second light emitting structure OL-B2 and the third light emitting structure OL-B3.

[0660] Among the four light emitting structures, the first to third light emitting structures OL-B1, OL-B2, and OL-B3 emit blue light, and the fourth light emitting structure OL-C1 may emit green light. However, one or more 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 of different wavelength regions.

[0661] The charge generation layers CGL1, CGL2, and CGL3 disposed between adjacent light emitting structures OL-C1, OL-B1, OL-B2, and OL-B3 may include a p-type or p-like charge generation layer and / or an n-type or n-like charge generation layer.

[0662] At least one of the light emitting structures OL-B1, OL-B2, OL-B3, and OL-C1 included in the display device DD-c of one or more embodiments may include the fused polycyclic compound of one or more embodiments described herein. For example, in one or more embodiments, at least one of the first to third light emitting structures OL-B1, OL-B2, and OL-B3 may include the fused polycyclic compound of one or more embodiments described.

[0663] The light-emitting element ED according to one or more embodiments of the present disclosure may include the fused polycyclic compound represented by Formula 1 of one or more embodiments described herein in at least one functional layer arranged between the first electrode EL1 and the second electrode EL2, thereby exhibiting excellent or appropriate luminous efficiency and improved service life characteristics. For example, the fused polycyclic compound according to one or more embodiments may be included in the emission layer EML of the light-emitting element ED of one or more embodiments, and the light-emitting element ED of one or more embodiments may exhibit long service life characteristics.

[0664] In one or more embodiments, the electronic device may include a display device including a plurality of light emitting elements and a control portion 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. Examples of electronic devices may include large display devices (such as televisions, monitors, or outdoor billboards) and medium and small display devices (such as personal computers, laptop computers, personal digital terminals, display devices for automobiles, game consoles, portable electronic devices, or cameras).

[0665] Fig.11 A diagram showing an automobile AM ​​in which first to fourth display devices DD-1, DD-2, DD-3, and DD-4 are arranged. At least one selected from the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may include reference Figure 1 , Figure 2 ,and Figures 7 to 10 The same configuration of the display devices DD, DD-TD, DD-a, DD-b, and DD-c of the explained embodiments.

[0666] exist Fig.11 In the figure, the vehicle is shown as a car AM, but this is for illustration, and the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may be arranged on other means of transportation (such as bicycles, motorcycles, trains, ships, and airplanes). In one or more embodiments, at least one of the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 of the same configuration including display devices DD, DD-TD, DD-a, DD-b, and DD-c may be introduced in a personal computer, a laptop computer, a personal digital terminal, a game console, a portable electronic device, a television, a monitor, and / or an external billboard, etc. In one or more embodiments, these are presented as examples, and display devices may be introduced in other electronic devices as long as they do not deviate from the present disclosure.

[0667] 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 6The light-emitting element ED of one or more embodiments described. The light-emitting element ED of one or more embodiments may include the fused polycyclic compound of one or more embodiments. At least one selected from the first to fourth display devices DD-1, DD-2, DD-3 and DD-4 may include a light-emitting element ED including the fused polycyclic compound of one or more embodiments, thereby improving the display life.

[0668] refer to Fig.11 The automobile AM ​​may include a steering wheel HA and a shift lever GR for operation of the automobile AM. In one or more embodiments, the automobile AM ​​may include a front window GL arranged to face the driver.

[0669] The first display device DD-1 may be arranged in a first area overlapping with the steering wheel HA. For example, the first display device DD-1 may be a digital instrument panel displaying first information of the automobile AM. The first information may include a first scale showing the driving speed of the automobile AM, a second scale showing the number of revolutions of the engine (i.e., revolutions per minute (RPM)), and an image showing the fuel status. The first scale and the second scale may be represented by digital images.

[0670] The second display device DD-2 may be arranged in a second area facing the driver's seat and overlapping with the front window GL. The driver's seat may be a seat in which the steering wheel HA is arranged. For example, the second display device DD-2 may be a head-up display (HUD) showing the second information of the automobile AM. The second display device DD-2 may be optically transparent. The second information may include a digital value showing the driving speed of the automobile AM ​​and may further include information containing the current time. Unlike the accompanying drawings, the second information of the second display device DD-2 may be projected and displayed on the front window GL.

[0671] The third display device DD-3 may be arranged in a third zone adjacent to the shift lever GR. For example, the third display device DD-3 may be a central information display (CID) for a car, arranged between a driver's seat and a passenger seat and showing the third information. The passenger seat may be a seat separate from the driver's seat, and the shift lever GR is between the passenger seat and the driver's seat. The third information may include information about road conditions (e.g., navigation information), information about playing music or radio broadcasts, information about playing dynamic images (or images), and / or information about the temperature inside the car AM, etc.

[0672] The fourth display device DD-4 may be arranged in a fourth area separated from the steering wheel HA and the shift lever GR and adjacent to the side of the automobile AM. For example, the fourth display device DD-4 may be a digital rearview mirror displaying the fourth information. The fourth display device DD-4 may display an external image of the automobile AM ​​photographed by a camera module CM arranged on the outside of the automobile AM. The fourth information may include an external image of the automobile AM.

[0673] The first to fourth information described herein is for explanation, and the first to fourth display devices DD-1, DD-2, DD-3, and DD-4 may further display information about the inside and outside of the automobile AM. The first to fourth information may include information different from each other. However, one or more embodiments of the present disclosure are not limited thereto, and a portion of the first to fourth information may include the same information.

[0674] Hereinafter, with reference to Examples and Comparative Examples, the fused polycyclic compound according to one or more embodiments of the present disclosure and the light-emitting element of one or more embodiments will be described in more detail. In one or more embodiments, the following examples are only for explanation to facilitate the understanding of the present disclosure, and the scope of the present disclosure is not limited thereto.

[0675] Example

[0676] 1. Synthesis of fused polycyclic compounds

[0677] First, the synthesis method of the fused polycyclic compound according to one or more embodiments will be specifically described by explaining the synthesis methods of Compound 2, Compound 3, Compound 64, Compound 71, Compound 81, Compound 88, Compound 99, Compound 103, Compound 106, Compound 107, and Compound 111. In one or more embodiments, the synthesis method of the fused polycyclic compound as described is only an example, and the synthesis method of the fused polycyclic compound according to one or more embodiments of the present disclosure is not limited to the following examples.

[0678] (1) Synthesis of Compound 2

[0679] Compound 2 according to one or more embodiments may be synthesized, for example, by the following reaction.

[0680] Synthesis of intermediate 2-a

[0681]

[0682] In an 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), N-(3-(([1,1'-biphenyl]-4-yl-d9 )oxy)-5-iodobenzene-4,6-d 2 )-5'-(tert-butyl)-N-(3-chlorophenyl)-2,4,5,6-d 4 )-[1,1':3',1"-terphenyl]-2'-amine (10.0 g, 13.5 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 added and dissolved in 300 milliliters (mL) of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 2-a (white solid, 12 g, yield: 64%).

[0683] ESI-LCMS of intermediate 2-a: [M] + :C 100 H 77 D 15 C1N 3 O, 1400.7925.

[0684] Synthesis of intermediate 2-b

[0685]

[0686] In an argon atmosphere, intermediate 2-a (12 g, 8.5 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d 4 (2.1 g, 8.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 2-b (white solid, 9.4 g, yield: 73%).

[0687] ESI-LCMS of intermediate 2-b: [M] + :C 106 H 76 D 19 Cl 2 N 3 O, 1514.8093.

[0688] Synthesis of intermediate 2-c

[0689]

[0690] In an argon atmosphere, to a 1 L flask, Intermediate 2-b (9 g, 6 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 2-c (yellow solid, 2.1 g, yield: 23%).

[0691] ESI-LCMS of intermediate 2-c: [M] + :C 106 H 74 D 15 B 2 Cl 2 N 3 O, 1526.7511.

[0692] Synthesis of compound 2

[0693]

[0694] In an argon atmosphere, intermediate 2-c (2.1 g, 1.4 mmol), 9H-carbazole-1,2,3,4,5,6,7,8-d 8 (0.46 g, 2.8 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 added and dissolved in 100 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 12 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 2 (yellow solid, 1.8 g, yield: 71%).

[0695] ESI-LCMS of compound 2: [M] + :C 130 H 74 D 31 B 2 N 5 O, 1805.0501.

[0696] Compound 2 1 H-NMR (CDCl 3 ): d=7.44(s,6H),7.22(m,18H),7.05(m,12H),6.92(s,2H),1.32(s,18H),1.28(s,9H),1.14(s,9H)

[0697] (2) Synthesis of Compound 3

[0698] Compound 3 according to one or more embodiments may be synthesized, for example, by the following reaction.

[0699] Synthesis of intermediate 3-a

[0700]

[0701] In an 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), 1,1'-((5-iodo-1,3-phenylene-4,6-diamine) were added to a 2 L flask. 2 )bis(oxy)bis(benzene-2,3,4,5,6-d 5 )(5.4 g, 13.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 3-a (white solid, 8.3 g, yield: 61%).

[0702] ESI-LCMS of intermediate 3-a: [M] + :C 72 H 56 D 12 N 2 O 2 , 1004.6004.

[0703] Synthesis of intermediate 3-b

[0704]

[0705] In an argon atmosphere, intermediate 3-a (8.3 g, 8.3 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d 4 (2.1 g, 8.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain Intermediate 3-b (white solid, 7 g, yield: 70%).

[0706] ESI-LCMS of intermediate 3-b: [M] + :C 78 H 55 D16 C1N 2 O 2 , 1118.6212.

[0707] Synthesis of intermediate 3-c

[0708]

[0709] In an argon atmosphere, to a 1 L flask, Intermediate 3-b (7 g, 6.3 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 3-c (yellow solid, 1.8 g, yield: 25%).

[0710] ESI-LCMS of intermediate 3-c: [M] + :C 78 H 53 D 12 B 2 C1N 2 O 2 , 1130.5057.

[0711] Synthesis of compound 3

[0712]

[0713] In an argon atmosphere, intermediate 3-c (1.8 g, 1.6 mmol), 4-(phenyl-d 5 )-9H-carbazole-1,2,3,5,6,7,8-d 7 (0.41 g, 1.6 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 added and dissolved in 100 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 12 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 3 (yellow solid, 1.7 g, yield: 81%).

[0714] ESI-LCMS of compound 3: [M] + :C 96 H 53 D 24 B 2 N 3 O 2 , 1349.7114.

[0715] Compound 3 1 H-NMR (CDCl 3 ): d=7.43(s,4H),7.27(m,12H),7.08(m,8H),6.88(s,2H),1.32(s,18H),1.28(s,9H)

[0716] (3) Synthesis of Compound 64

[0717] Compound 64 according to the example can be synthesized by, for example, the following reaction.

[0718] Synthesis of intermediate 64-a

[0719]

[0720] In an 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), ([1,1'-biphenyl]-4-yl-d 9 )(3-(([1,1'-biphenyl]-4-yl-d 9 )oxy)-5-iodobenzene-4,6-d 2 ) selenane (8.4 g, 13.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2The intermediate 64-a was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain the intermediate 64-a (white solid, 10.7 g, yield: 65%).

[0721] ESI-LCMS of intermediate 64-a: [M] + :C 84 H 56 D 20 N 2 OSe, 1228.6411.

[0722] Synthesis of intermediate 64-b

[0723]

[0724] In an argon atmosphere, intermediate 64-a (10.7 g, 8.3 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d 4 (2.1 g, 8.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain Intermediate 64-b (white solid, 8.1 g, yield: 73%).

[0725] ESI-LCMS of intermediate 64-b: [M] + :C 90 H 55 D 24 C1N 2 OSe, 1342.6664.

[0726] Synthesis of intermediate 64-c

[0727]

[0728] In an argon atmosphere, to a 1 L flask, Intermediate 64-b (8 g, 6.3 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3(1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 64-c (yellow solid, 1.86 g, yield: 23%).

[0729] ESI-LCMS of intermediate 64-c: [M] + :C 90 H 53 D 20 B 2 C1N 2 OSe, 1354.6061.

[0730] Synthesis of compound 64

[0731]

[0732] In an argon atmosphere, intermediate 64-c (1.8 g, 1.3 mmol), 9H-carbazole-1,2,3,4,5,6,7,8-d 8 (0.22 g, 1.3 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 added and dissolved in 100 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 12 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 64 (yellow solid, 1.5 g, yield: 78%).

[0733] ESI-LCMS of compound 64: [M] + :C 102 H 53 D 28 B 2 N 3 OSe, 1493.7554.

[0734] Compound 64 1H-NMR (CDCl 3 ): d=7.47(s,4H),7.23(m,12H),7.03(m,8H),6.85(s,2H),1.38(s,18H),1.14(s,9H)

[0735] (4) Synthesis of Compound 71

[0736] Compound 71 according to one or more embodiments can be synthesized, for example, by the following reaction.

[0737] Synthesis of intermediate 71-a

[0738]

[0739] In an 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), ([1,1'-biphenyl]-3-yl-d 9 )(3-(([1,1'-biphenyl]-3-yl-d 9 )oxy)-5-iodobenzene-4,6-d 2 )sulfane (7.8 g, 13.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 71-a (white solid, 11 g, yield: 70%).

[0740] ESI-LCMS of intermediate 71-a: [M] + :C 84 H 56 D 20 N 2 OS, 1180.6916.

[0741] Synthesis of intermediate 71-b

[0742]

[0743] In an argon atmosphere, intermediate 71-a (11 g, 9.3 mmol), 1-chloro-3-iodobenzene-2,4,5,6-d 4 (2.3 g, 9.3 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 71-b (white solid, 8.6 g, yield: 72%).

[0744] ESI-LCMS of intermediate 71-b: [M] + :C 90 H 55 D 24 C1N 2 OS, 1294.7169.

[0745] Synthesis of intermediate 71-c

[0746]

[0747] In an argon atmosphere, to a 1 L flask, Intermediate 71-b (8.6 g, 6.6 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 71-c (yellow solid, 1.9 g, yield: 22%).

[0748] ESI-LCMS of intermediate 71-c: [M] + :C 90 H 53 D 20 B 2C1N 2 OS, 1306.6114.

[0749] Synthesis of compound 71

[0750]

[0751] In an argon atmosphere, intermediate 71-c (1.9 g, 1.45 mmol), 9H-carbazole-1,2,3,4,5,6,7,8-d 8 (0.25 g, 1.5 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 added and dissolved in 100 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 12 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using MgSO4 and hexane as eluent to obtain Compound 71 (yellow solid, 1.5 g, yield: 73%).

[0752] ESI-LCMS of compound 71: [M] + :C 102 H 53 D 28 B 2 N 3 OS, 1445.8084.

[0753] Compound 71 1 H-NMR (CDCl 3 ): d=7.46(s,4H),7.25(m,12H),7.06(m,8H),6.89(s,2H),1.39(s,18H),1.18(s,9H)

[0754] (5) Synthesis of Compound 81

[0755] Compound 81 according to the example can be synthesized, for example, by the following reaction.

[0756] Synthesis of intermediate 81-a

[0757]

[0758] In an 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), ([1,1'-biphenyl]-4-yl-2,3,5,6-d 4 )(3-(([1,1'-biphenyl]-4-yl-2,3,5,6-d 4 )oxy)-5-iodobenzene-4,6-d 2 )sulfane (7.6 g, 13.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 81-a (white solid, 11 g, yield: 74%).

[0759] ESI-LCMS of intermediate 81-a: [M] + :C 84 H 66 D 10 N 2 OS, 1170.6364.

[0760] Synthesis of intermediate 81-b

[0761]

[0762] In an argon atmosphere, intermediate 81-a (11 g, 9.4 mmol), 3-iodo-1,1'-biphenyl-2,2',3',4,4',5,5',6,6'-d 9 (2.7 g, 9.4 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 81-b (white solid, 9.4 g, yield: 75%).

[0763] ESI-LCMS of intermediate 81-b: [M] + :C 96 H 65 D 19 N 2 OS, 1331.7503.

[0764] Synthesis of compound 81

[0765]

[0766] In an argon atmosphere, to a 1 L flask, Intermediate 81-b (9.4 g, 7 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using MgSO4 and hexane as eluent to obtain Compound 81 (yellow solid, 2.37 g, yield: 25%).

[0767] ESI-LCMS of compound 81: [M] + :C 96 H 63 D 15 B 2 N 2 OS, 1343.1718.

[0768] Compound 81 1 H-NMR (CDCl 3): d=7.52(m,10H),7.43(s,4H),7.21(m,12H),7.01(m,8H),6.83(s,2H),1.44(s,18H),1.22(s,9H)

[0769] (6) Synthesis of Compound 88

[0770] Compound 88 according to the example can be synthesized, for example, by the following reaction.

[0771] Synthesis of intermediate 88-a

[0772]

[0773] In an 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), 9-(3-(([1,1'-biphenyl]-3-yl-d 9 )sulfur)-5-bromophenyl-4,6-d 2 )-9H-carbazole-1,2,3,4,5,6,7,8-d 8 (7.1 g, 13.5 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 88-a (white solid, 10.8 g, yield: 68%).

[0774] ESI-LCMS of intermediate 88-a: [M] + :C 84 H 56 D 19 N 3 S, 1176.0069.

[0775] Synthesis of intermediate 88-b

[0776]

[0777] In an argon atmosphere, intermediate 88-a (10.8 g, 9.2 mmol), 3-iodo-1,1'-biphenyl-2,2',3',4,4',5,5',6,6'-d 9 (2.7 g, 9.2 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The intermediate 88-b was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as the eluent to obtain the intermediate 88-b (white solid, 9.5 g, yield: 77%).

[0778] ESI-LCMS of intermediate 88-b: [M] + :C 96 H 55 D 28 N 3 S, 1337.8121.

[0779] Synthesis of compound 88

[0780]

[0781] In an argon atmosphere, to a 1 L flask, Intermediate 88-b (9.5 g, 7.1 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Compound 88 (yellow solid, 2.3 g, yield: 23%).

[0782] ESI-LCMS of compound 88: [M] + :C 96 H 53 D 24 B 2 N3 S, 1349.7759.

[0783] Compound 88 1 H-NMR (CDCl 3 ): d=7.40(s,4H),7.15(m,12H),7.07(m,8H),6.99(s,2H),1.36(s,18H),1.21(s,9H)

[0784] (7) Synthesis of Compound 99

[0785] Compound 99 according to the example can be synthesized, for example, by the following reaction.

[0786] Synthesis of Intermediate 99-a

[0787]

[0788] In an argon atmosphere, 5-(tert-butyl)-N1-(5'-(tert-butyl)-[1,1':3',1"-terphenyl]-2'-yl)-N3-(dibenzo[b,d]furan-1-yl)benzene-1,3-diamine (10 g, 16 mmol), N-([1,1'-biphenyl]-3-yl-d 9 )-N-(3-(([1,1'-biphenyl]-3-yl-d 9 )oxy)-5-iodobenzene-4,6-d 2 )-5-(tert-butyl)-[1,1'-biphenyl]-2-amine (12.4 g, 16 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 99-a (white solid, 13.2 g, yield: 65%).

[0789] ESI-LCMS of intermediate 99-a: [M] + :C 90 H 59 D 20 N3 O 2 , 1253.6574.

[0790] Synthesis of Intermediate 99-b

[0791]

[0792] In an argon atmosphere, intermediate 99-a (13 g, 10 mmol), 3-iodo-1,1'-biphenyl-2,2',3',4,4',5,5',6,6'-d 9 (3 g, 10 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 added and dissolved in 300 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The product was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 99-b (white solid, 10.7 g, yield: 76%).

[0793] ESI-LCMS of intermediate 99-b: [M] + :C 102 H 58 D 29 N 3 O 2 , 1414.8674.

[0794] Synthesis of compound 99

[0795]

[0796] In an argon atmosphere, to a 1 L flask, Intermediate 99-b (10 g, 7 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (1.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 99 (yellow solid, 2.4 g, yield: 24%).

[0797] ESI-LCMS of compound 99: [M] + :C 102 H 56 D 25 B 2 N 3 O 2 , 1426.9817.

[0798] Compound 99 1 H-NMR (CDCl 3 ): d=7.88(d,1H),7.65(d,1H),7.50(s,1H),7.45(s,2H),7.38(m,6H),7.2 0(m,6H),7.08(m,6H),6.95(d,1H),6.87(s,2H),1.39(s,18H),1.19(s,9H)

[0799] (8) Synthesis of Compound 103

[0800] Compound 103 according to one or more embodiments can be synthesized by, for example, the following reaction.

[0801] Synthesis of Intermediate 103-a

[0802]

[0803] In an 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 mmol), 3,3"-((5-iodo-1,3-phenylene)bis(oxy))-di-1,1'-biphenyl (7.4 g, 13 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2The intermediate 103-a (white solid, 11 g, yield: 75%) was obtained by purification and separation by silica gel column chromatography using 4% pyrrolidone and hexane as eluent.

[0804] ESI-LCMS of intermediate 103-a: [M] + :C 84 H 76 N 2 O 2 , 1144.5951.

[0805] Synthesis of intermediate 103-b

[0806]

[0807] In an argon atmosphere, intermediate 103-a (10 g, 8.7 mmol), 9-(3-iodobenzene-2,5,6-d 3 )-9H-carbazole-1,2,3,4,5,6,7,8-d 8 (3.3 g, 8.7 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The intermediate 103-b was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain intermediate 103-b (white solid, 8 g, yield: 66%).

[0808] ESI-LCMS of intermediate 103-b: [M] + :C 102 H 76 D 11 N 3 O 2 , 1396.7511.

[0809] Synthesis of compound 103

[0810]

[0811] In an argon atmosphere, to a 1 L flask, Intermediate 103-b (8 g, 5.7 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (2.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 103 (yellow solid, 2.4 g, yield: 24%).

[0812] ESI-LCMS of compound 103: [M] + :C 102 H 70 D 11 B 2 N 3 O 2 , 1412.7284.

[0813] Compound 103 1 H-NMR (CDCl 3 ): δ=7.84(d,2H),7.75(d,2H),7.49(m,6H),7.43(m,2H),7.38(s,4H),7.27 (m,12H),7.08(m,8H),6.88(s,2H),6.58(s,1H),1.35(s,18H),1.23(s,9H)

[0814] (9) Synthesis of Compound 106

[0815] Compound 106 according to one or more embodiments can be synthesized, for example, by the following reaction.

[0816] Synthesis of Intermediate 106-a

[0817]

[0818] In an 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 mmol), N-(3-(3-(9H-carbazol-9-yl)phenoxy)-5-iodobenzene)-N-([1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-4-amine (10.1 g, 13 mmol), Pd 2 dba 3(1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 106-a (white solid, 11.7 g, yield: 77%).

[0819] ESI-LCMS of intermediate 106-a: [M] + :C 94 H 72 N 4 O, 1272.5717.

[0820] Synthesis of Intermediate 106-b

[0821]

[0822] In an argon atmosphere, intermediate 106-a (10 g, 7.8 mmol), 3-iodo-1,1'-biphenyl (2.2 g, 7.8 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 It was purified and separated by silica gel column chromatography using 4% and hexane as eluent to obtain Intermediate 106-b (white solid, 7.8 g, yield: 68%).

[0823] ESI-LCMS of intermediate 106-b: [M] + :C 106 H 80 N 4 O, 1424.6383.

[0824] Synthesis of compound 106

[0825]

[0826] In an argon atmosphere, to a 1 L flask, Intermediate 106-b (8 g, 5.6 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (2.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 106 (yellow solid, 1.8 g, yield: 22%).

[0827] ESI-LCMS of compound 106: [M] + :C 106 H 74 B 2 N 4 O, 1440.0641.

[0828] Compound 106 1 H-NMR (CDCl 3 ): δ=8.88(m,3H),8.55(d,2H),7.97(d,2H),7.75(d,2H),7.65(t,2H),7.53(m,12H),7.49(m,4H),7.43(m,12H),7. 38(m,4H),7.28(t,2H),7.23(m,2H),7.17(s,1H),7.12(s,1H),7.05(m,8H),6.85(s,2H),6.55(s,1H),1.32(s,9H)

[0829] (10) Synthesis of Compound 107

[0830] Compound 107 according to one or more embodiments can be synthesized, for example, by the following reaction.

[0831] Synthesis of Intermediate 107-a

[0832]

[0833] In an argon atmosphere, N1,N3-bis([1,1':3',1"-terphenyl]-2'-yl)-5-(tert-butyl)benzene-1,3-diamine (10 g, 16 mmol), 4,4"-((5-iodo-1,3-phenylene)bis(oxy))-bis-1,1'-biphenyl (8.7 g, 16 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 added and dissolved in 150 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The intermediate 107-a was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain the intermediate 107-a (white solid, 11.5 g, yield: 70%).

[0834] ESI-LCMS of intermediate 107-a: [M] + :C 76 H 60 N 2 O 2 , 1032.4771.

[0835] Synthesis of intermediate 107-b

[0836]

[0837] In an argon atmosphere, intermediate 107-a (10 g, 9.7 mmol), 3-iodo-1,1'-biphenyl (2.7 g, 9.7 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2The intermediate 107-b was purified and separated by silica gel column chromatography using 4% pyrrolidone and hexane as eluent to obtain intermediate 107-b (white solid, 8.6 g, yield: 75%).

[0838] ESI-LCMS of intermediate 107-b: [M]+: C 88 H 68 N 2 O 2 , 1185.5234.

[0839] Synthesis of compound 107

[0840]

[0841] In an argon atmosphere, to a 1 L flask, Intermediate 107-b (8 g, 6.7 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (2.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 107 (yellow solid, 1.86 g, yield: 23%).

[0842] ESI-LCMS of compound 107: [M] + :C 88 H 62 B 2 N 2 O 2 , 1201.1010.

[0843] Compound 107 1 H-NMR (CDCl 3 ): δ=8.58(m,3H),7.78(d,6H),7.67(d,4H),7.50(m,10H),7.43(m,13H),7.40(m, 2H),7.27(s,1H),7.19(d,2H),7.11(m,8H),7.00(s,2H),6.58(s,1H),1.35(s,9H)

[0844] (11) Synthesis of Compound 111

[0845] Compound 111 according to one or more embodiments can be synthesized, for example, by the following reaction.

[0846] Synthesis of intermediate 111-a

[0847]

[0848] In an argon atmosphere, N1,N3-bis([1,1':3',1"-terphenyl]-2'-yl)-5-(tert-butyl)benzene-1,3-diamine (10 g, 16 mmol), 3,3"'-((5-iodo-1,3-phenylene)bis(oxy))-bis-1,1':3',1"-terphenyl (11 g, 16 mmol), Pd 2 dba 3 (1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was then stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 111-a (white solid, 12.3 g, yield: 65%).

[0849] ESI-LCMS of intermediate 111-a: [M] + :C 88 H 68 N 2 O 2 , 1184.5343.

[0850] Synthesis of intermediate 111-b

[0851]

[0852] In an argon atmosphere, intermediate 111-a (10 g, 8.4 mmol), 9-(3-iodobenzene-2,5,6-d 3 )-9H-carbazole-1,2,3,4,5,6,7,8-d 8 (3.2 g, 8.4 mmol), Pd 2 dba 3(1.6 g, 1.9 mmol), tri-tert-butylphosphine (1.6 mL, 3.8 mmol) and sodium tert-butoxide (4.8 g, 50 mmol) were added and dissolved in 150 mL of o-xylene, and the reaction solution was stirred at about 140° C. for about 2 hours. After cooling, the reaction solution was extracted by adding water (1 L) and ethyl acetate (300 mL) to collect the organic layer, and MgSO 4 The organic layer was dried and then filtered. In the filtrate, the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was purified by using CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Intermediate 111-b (white solid, 8.6 g, yield: 71%).

[0853] ESI-LCMS of intermediate 111-b: [M] + :C 106 H 68 D 11 N 3 O 2 , 1436.6927.

[0854] Synthesis of compound 111

[0855]

[0856] In an argon atmosphere, to a 1 L flask, Intermediate 111-b (8 g, 5.5 mmol) was added and dissolved in 100 mL of o-dichlorobenzene, and then BBr was added thereto. 3 (2.5 equivalents). The reaction solution was stirred at about 140° C. for about 12 hours. After the reaction solution was cooled, the reaction was terminated by adding triethylamine, and the solvent was removed under reduced pressure to obtain a solid. The solid thus obtained was reacted with CH 2 Cl 2 The resulting product was purified and separated by silica gel column chromatography using 4% and hexane as an eluent to obtain Compound 111 (yellow solid, 1.86 g, yield: 23%).

[0857] ESI-LCMS of compound 111: [M] + :C 106 H 62 D 11 B 2 N 3 O 2 , 1452.6614.

[0858] Compound 111 1 H-NMR (CDCl 3): δ=8.66(m,3H),7.97(s,2H),7.73(m,6H),7.61(m,4H),7.49(m,6H),7.42(m,14 H),7.36(m,2H),7.29(s,2H),7.10(m,8H),6.88(s,2H),6.55(s,1H),1.38(s,9H)

[0859] 2. Manufacturing and evaluation of light-emitting components

[0860] The light-emitting element of the example including the condensed polycyclic compound of the example in the emission layer is manufactured as follows. The condensed polycyclic compound of Compound 2, Compound 3, Compound 64, Compound 71, Compound 81, Compound 88, Compound 99, Compound 103, Compound 106, Compound 107 and Compound 111 (which are the embodiment compounds described herein) is used as a dopant material for the emission layer to manufacture the light-emitting elements of Examples 1 to 11, respectively. Comparative Examples 1 to 4 correspond to light-emitting elements manufactured by using Comparative Example Compounds C1 to C4 as dopant materials for the emission layer, respectively.

[0861] Example compounds

[0862]

[0863]

[0864] Comparative Example Compounds

[0865]

[0866] Manufacturing of light-emitting components

[0867] In the light-emitting elements of the examples and comparative examples, a 15 ohm per square centimeter (Ω / cm 2 )(about A glass substrate (manufactured by Corning) with an indium tin oxide (ITO) electrode was cut into a size of about 50 millimeters (mm) × 50 mm × 0.7 mm, cleaned by ultrasonic waves using isopropyl alcohol and pure water for about five minutes each, and then irradiated with ultraviolet rays for about 30 minutes and exposed to ozone and cleaned. The glass substrate was mounted on a vacuum deposition device.

[0868] NPD is deposited on the upper portion of the anode to form A thick hole injection layer is formed, and then compound H-1-19 is deposited on the upper portion of the hole injection layer to form A thick hole transport layer is formed, and CzSi is then deposited on the upper portion of the hole transport layer to form Thick electron blocking layer.

[0869] Then, a host mixture in which the second compound and the third compound according to one or more embodiments are mixed in an amount of about 1:1, a fourth compound, and an example compound or a comparative example compound are co-deposited in a weight ratio of about 85:14:1 to form A thick emission layer is formed, and on the upper portion of the emission layer, TSPO1 is deposited to form Then, TPBi is deposited on the upper portion of the hole blocking layer to form A thick electron transport layer is formed, and then LiF is deposited on the upper portion of the electron transport layer to form Then Al is used to form a thick electron injection layer. Then, on the upper part of the LiF / Al electrode, a compound P4 is used to form Thick capping layer.

[0870] Each layer is formed by a vacuum deposition method. In one or more embodiments, HT1 in the compound of compound group 2 as described herein is used as the second compound, and ETH66 in the compound of compound group 3 as described herein is used as the third compound, and AD-39 in the compound of compound group 4 as described herein is used as the fourth compound.

[0871] Compounds used for manufacturing light-emitting elements of Examples and Comparative Examples are disclosed herein. These materials were used to manufacture light-emitting elements by sublimation purification of commercial products.

[0872]

[0873]

[0874] Evaluation of light-emitting element characteristics

[0875] Evaluation of Physical Properties of Example Compounds and Comparative Example Compounds

[0876] The physical properties of Compound 2, Compound 3, Compound 64, Compound 71, Compound 81, Compound 88, Compound 99, Compound 103, Compound 106, Compound 107 and Compound 111 as example compounds and Comparative Example Compounds C1 to C4 as comparative example compounds were evaluated, and the results are listed in Table 1.

[0877] The highest occupied molecular orbital (HOMO) energy level, the lowest excited singlet state energy level (S1 energy level), the lowest excited triplet state energy level (T1 energy level), △E ST , spin-orbit coupling (SOC) value, absorption wavelength in solution (λ吸收 ) and emission wavelength (λ 发射 ), Stokes shift and luminescence efficiency (photoluminescence quantum yield, PLQY), and the results are listed in Table 1.

[0878] In Table 1, the λ was measured using Labsolution UV-Vis software with a UV-1800 UV / visible scanning spectrophotometer instrument manufactured by SHIMADZU Corp. equipped with a deuterium / tungsten-halogen light source and a silicon photodiode. 吸收 The S1 level, T1 level and λ were measured using FluorEssence software with a fluoromax+ spectrometer equipped with a xenon light source and a monochromator manufactured by HORIBA, Ltd. 发射 The Stokes shift represents the difference between the maximum wavelength when absorbing energy and the maximum wavelength when emitting energy. The HOMO energy level was measured using the SmartManager software of the SP2 electrochemical workstation equipment manufactured by ZIVE LAB. In Table 1, ΔE ST Refers to the difference between the lowest excited triplet energy level (T1 level) and the lowest excited singlet energy level (S1 level).

[0879] SOC calculations were performed using unrestricted density functional theory (UDFT). UDFT calculations were performed using Gaussian09, a commercial program, and using 6-311G (d, p) basis functions and B3LYP exchange correlation functionals. PLQY was measured using a Quantaurus-QY measurement system instrument (C11347-11, Hamamatsu Photonics).

[0880] [Table 1]

[0881]

[0882]

[0883] The luminous efficiency and element service life of each of the light-emitting elements manufactured using Compound 2, Compound 3, Compound 64, Compound 71, Compound 81, Compound 88, Compound 99, Compound 103, Compound 106, Compound 107 and Compound 111 as experimental examples described herein and Comparative Example Compound C1 to Comparative Example Compound C4 were evaluated. The evaluation results of the light-emitting elements of Examples 1 to 11 and Comparative Examples 1 to 4 are listed in Table 2. In the characteristic evaluation results of the embodiments and comparative examples listed in Table 2, the driving voltage and current density were measured by using a V7000 OLED IVL test system (Polaronix). In order to evaluate the characteristics of the light-emitting elements manufactured in Examples 1 to 11 and Comparative Examples 1 to 4, the driving voltage and current density were measured at 10 milliamperes per square centimeter (mA / cm 2 The driving voltage and luminous efficiency (candela per ampere (cd / A)) at a current density of 10 mA / cm 2 The degradation time from the initial brightness to 95% brightness when continuously operated at a current density of 10 mA / cm 2 The degradation time from the initial brightness to 95% brightness during continuous operation at a current density of 1.547 W was compared with the numerical value and then evaluated. CIEy represents the y value of the CIE chromaticity coordinate.

[0884] [Table 2]

[0885]

[0886]

[0887] With reference to the results of Table 2, it can be confirmed that, compared with the comparative example, the embodiment of the light-emitting element in which the fused polycyclic compound according to the example of the present disclosure is used as a light-emitting material has improved luminous efficiency and service life characteristics. The fused polycyclic compound of one or more embodiments has a structure in which two aromatic hydrocarbon rings are fused to a fused polycyclic heterocyclic ring via a boron atom and two heteroatoms at a specific position, thereby increasing the spin-orbit coupling constant and thus achieving high luminous efficiency and long service life. More specifically, one of the two heteroatoms connecting the two aromatic hydrocarbon rings and the fused polycyclic heterocyclic ring is arranged in the ortho position of the carbon atom bonded to the first boron atom relative to the fused polycyclic heterocyclic ring, and thus the spin-orbit coupling constant between the lowest excited singlet energy level (S1 energy level) and the lowest excited triplet energy level (T1 energy level) can be increased, thereby contributing to the high luminous efficiency and improved service life characteristics of the light-emitting element. In one or more embodiments, the embodiment compound includes a first substituent, and thus the boron atom can be effectively protected, thereby achieving high luminous efficiency and long service life. Without being bound by any particular theory, it is believed that the embodiment compounds have increased luminous efficiency because the intermolecular interactions can be suppressed or reduced by the introduction of the first substituent, thereby controlling the formation of excited molecules or excited complexes. In addition, each of the embodiment compounds has an increased distance between adjacent molecules due to the large steric structure caused by the first substituent, thereby suppressing or reducing Dexter energy transfer, and thus suppressing or reducing the degradation of the service life caused by the increase in triplet concentration. The illustrative light-emitting element includes the illustrative fused polycyclic compound as a luminescent dopant of a thermally activated delayed fluorescence (TADF) light-emitting element, and thus high luminous efficiency in the blue wavelength region and improved service life characteristics can be achieved.

[0888] Compared with the embodiment, Comparative Example 1 and Comparative Example 2 show the result of reduced component service life and luminous efficiency. Each of the comparative example compounds C1 and C2 included in Comparative Example 1 and Comparative Example 2 includes a fused polycyclic heterocycle centered on a boron atom and two nitrogen atoms and a structure in which a plurality of benzene rings are connected to the fused polycyclic heterocycle via a boron atom and an oxygen atom to form another fused ring. With reference to Tables 1 and 2, it can be confirmed that Comparative Example Compounds C1 and C2 show spin-orbit coupling values ​​similar to those of the embodiment compounds. Without being bound by any particular theory, it is believed that compared with the embodiment compounds, due to the additional fused rings having a structure in which four rings are additionally fused with other benzene rings (rather than "fused benzene rings") in the fused polycyclic heterocycle, Comparative Example Compounds C1 and C2 therefore deteriorate chemical stability, and therefore reduce luminous efficiency and component service life. In addition, without being bound by any particular theory, it is believed that because the comparative example compounds C1 and C2 do not include the first substituent proposed in the present disclosure in the condensed ring skeleton, the effect of spatially protecting the boron atom in the planar structure of the condensed ring core is reduced, and it is difficult to expect or achieve the effect of intermolecular interaction, etc. Accordingly, it can be confirmed that when applied to a light-emitting element, the comparative example compounds C1 and C2 have a significantly reduced service life compared to the embodiment compounds. In addition, with reference to Table 1, it can be confirmed that the HOMO energy level of the comparative compounds C1 and C2 is shallower than the HOMO energy level of the embodiment compounds. That is, without being bound by any particular theory, it is believed that when the dopant HOMO energy level is shallow, when holes are injected from the electrode into the emission layer, the holes are more likely to be trapped in the dopant as an emitter, rather than moving to the host, and this leads to direct recombination, which can cause the light-emitting element to deteriorate. In the context of the present disclosure, when the energy level is referred to as "shallow", it may refer to the absolute value of the energy level becoming smaller from the vacuum energy level to the negative direction. In the context of the present disclosure, when an energy level is referred to as "deep", it may mean that the absolute value of the energy level becomes larger in a negative direction from the vacuum energy level.

[0889] Compared with the embodiment, Comparative Example 3 shows the result of reduced element service life and luminous efficiency. Comparative Example Compound C3 included in Comparative Example 3 includes a fused polycyclic heterocycle centered on a boron atom and two nitrogen atoms, and a structure in which two benzene rings are connected to the fused polycyclic heterocycle via a boron atom and an oxygen atom to form another fused ring, but does not include the first substituent proposed by the present disclosure, and therefore when applied to a light-emitting element, compared with the embodiment, has reduced luminous efficiency and service life. Without being bound by any particular theory, it is believed that because Comparative Example Compound C3 has a structure in which phenyl groups each substituted by a tert-butyl group are connected to nitrogen atoms constituting the fused polycyclic heterocycle and the effect of spatial protection of the fused ring core with these substituents is insufficient, Comparative Example Compound C3 may have the following reduced effects compared with the embodiment: reducing intermolecular interactions or inhibiting or reducing Dexter energy transfer, thereby reducing triplet concentration.

[0890] Compared with the embodiment, Comparative Example 4 shows the result of reduced element service life and luminous efficiency. It can be confirmed that the comparative example compound C4 included in Comparative Example 4 has a structure in which the first substituent (which is an ortho-type or ortho-type terphenyl) is connected to a fused polycyclic heterocyclic ring centered on a boron atom and two nitrogen atoms, and therefore shows improved service life characteristics compared with Comparative Examples 1 to 3. However, it can be confirmed that the comparative example compound C4 has a structure in which no additional fused ring is formed on the fused polycyclic heterocyclic ring, so that the spin-orbit coupling value is 0.021 cm to the negative first power (cm -1 ), which is significantly lower than the spin-orbit coupling value of the example compounds, and therefore, when applied to a light-emitting element, the luminous efficiency and the element life are reduced.

[0891] The light emitting element of one or more embodiments may exhibit improved element characteristics with high light emitting efficiency and long lifetime.

[0892] The condensed polycyclic compound of one or more embodiments may be included in an emission layer of a light emitting element to contribute to high light emission efficiency and long lifetime of the light emitting element.

[0893] The display device of one or more embodiments may exhibit excellent or appropriate display quality.

[0894] Although the present disclosure has been described with reference to the embodiments thereof, it will be understood that the present disclosure should not be limited to these embodiments but may be subjected to one or more appropriate changes and modifications by those skilled in the art without departing from the spirit and scope of the present disclosure.

[0895] Accordingly, the technical scope of the present disclosure is not intended to be limited to the contents set forth in the detailed description of the specification, but is intended to be defined by the appended claims and their equivalents.

Claims

1. A fused polycyclic compound represented by Formula 1: Formula 1 In formula 1, X1 is NR 17 ,O,S,Se or Te, X2 is O, S or Se, R1 to R7 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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, R8 to R 16 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted silyl group, a substituted or unsubstituted germanium group, a substituted or unsubstituted oxy group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, R 17 is 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 / or is bonded to an adjacent group to form a ring, Ar1 and Ar2 are each independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 ring carbon atoms, and At least one of Ar1 and Ar2 is represented by the formula S: Formula S In formula S, Z1 to Z3 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bond with an adjacent group to form a ring, n1 is an integer selected from 0 to 3, n2 and n3 are each independently an integer selected from 0 to 5, and -* is the position connected to Formula 1.

2. The fused polycyclic compound according to claim 1, wherein In Formula 1, at least one selected from R1 to R7 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or is represented by any one selected from Formula A-1 to Formula A-4: Formula A-1 Formula A-2 Formula A-3 Formula A-4 In Formula A-1 to Formula A-4, Z a NR a10 , O, S or Se, R a1 To R a10 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, m1 and m6 to m8 are each independently an integer selected from 0 to 5, m2, m3, m5 and m9 are each independently an integer selected from 0 to 4, m4 is an integer selected from 0 to 3, and -* is the position connected to Formula 1.

3. The fused polycyclic compound according to claim 1, wherein In Formula 1, at least one of Ar1 and Ar2 is represented by Formula S, and any remaining Ar1 or Ar2 is represented by any one selected from Formula B-1 to Formula B-3: Formula B-1 Formula B-2 Formula B-3 In Formula B-1 to Formula B-3, Z b NR b8 , O, S or Se, R b1 To R b7 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, R b8 is 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, m11, m14 and m15 are each independently an integer selected from 0 to 5, m12 and m17 are each independently an integer selected from 0 to 4, m13 and m16 are each independently an integer selected from 0 to 3, and -* is the position connected to Formula 1.

4. The fused polycyclic compound according to claim 1, wherein the fused polycyclic compound is represented by Formula 2-1 or Formula 2-2: Formula 2-1 Formula 2-2 In formula 2-1 and formula 2-2, A1 and A2 are each independently represented by any one selected from Formula A-1 to Formula A-4, and B1 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms: Formula A-1 Formula A-2 Formula A-3 Formula A-4 In Formula A-1 to Formula A-4, Z a NR a10 , O, S or Se, R a1 To R a10 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, m1 and m6 to m8 are each independently an integer selected from 0 to 5, m2, m3, m5 and m9 are each independently an integer selected from 0 to 4, m4 is an integer selected from 0 to 3, and -* is the location to be connected, and In formula 2-1 and formula 2-2, X1, X2, Ar1, Ar2, R1 to R5, and R7 to R 16 As defined in Eq.

1.

5. The fused polycyclic compound according to claim 1, wherein the fused polycyclic compound is represented by any one selected from Formula 3-1 to Formula 3-3: Formula 3-1 Formula 3-2 Formula 3-3 In Formula 3-1 to Formula 3-3, Z4 to Z6 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bond with an adjacent group to form a ring, n4 is an integer selected from 0 to 3, n5 and n6 are each independently an integer selected from 0 to 5, and X1, X2, Ar1, Ar2, R1 to R 16 , Z1 to Z3 and n1 to n3 are as defined in Formula 1 and Formula S.

6. The fused polycyclic compound according to claim 1, wherein the fused polycyclic compound is represented by any one selected from Formula 4-1 to Formula 4-5: Formula 4-1 Formula 4-2 Formula 4-3 Formula 4-4 Formula 4-5 In Formula 4-1 to Formula 4-5, C1 to C8 are each independently a hydrogen atom or a deuterium atom, and D1, D2, E1 and E2 are each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or represented by any one selected from Formula C-1 to Formula C-5: Formula C-1 Formula C-2 Formula C-3 Formula C-4 Formula C-5 In Formula C-1 to Formula C-5, Z c NR c11 , O, S or Se, M is Si or Ge, R c1 To R c7 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, R c8 To R c11 are each 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, m21, m24 and m25 are each independently an integer selected from 0 to 5, m22, m23 and m27 are each independently an integer selected from 0 to 4, m26 is an integer selected from 0 to 3, and -* is the location to be connected, and In Formula 4-1 to Formula 4-5, X1, X2, Ar1, Ar2, and R1 to R 16 As defined in Eq.

1.

7. The fused polycyclic compound according to claim 1, wherein the fused polycyclic compound is represented by any one selected from Formula 5-1 to Formula 5-3: Formula 5-1 Formula 5-2 Formula 5-3 In Formula 5-1 to Formula 5-3, R 21 To R 24 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, a1 and a2 are each independently an integer selected from 0 to 4, a3 and a4 are each independently an integer selected from 0 to 5, and X1, X2, Ar1, Ar2, and R1 to R 16 As defined in Eq.

1.

8. The fused polycyclic compound according to claim 1, wherein the fused polycyclic compound is represented by any one selected from Formula 6-1 to Formula 6-3: Formula 6-1 Formula 6-2 Formula 6-3 In equations 6-1 to 6-3, R 21 To R 24 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, Z4 to Z6 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bond with an adjacent group to form a ring, a1 and a2 are each independently an integer selected from 0 to 4, a3, a4, n5 and n6 are each independently an integer selected from 0 to 5, n4 is an integer selected from 0 to 3, and At least one selected from Q1 to Q8 is represented by any one selected from Formula C-1 to Formula C-5, and any remaining groups selected from Q1 to Q8 are each independently a hydrogen atom or a deuterium atom: Formula C-1 Formula C-2 Formula C-3 Formula C-4 Formula C-5 In Formula C-1 to Formula C-5, Z c NR c11 , O, S or Se, M is Si or Ge, R c1 To R c7 each independently represents a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted amine 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 / or bonds with an adjacent group to form a ring, R c8 To R c11 are each 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, m21, m24 and m25 are each independently an integer selected from 0 to 5, m22, m23 and m27 are each independently an integer selected from 0 to 4, and m26 is an integer selected from 0 to 3, and -* is the location to be connected, and In equations 6-1 to 6-3, X1, R1 to R8, Z1 to Z3 and n1 to n3 are as defined in Formula 1 and Formula S.

9. The fused polycyclic compound according to claim 1, wherein R1 to R 16 At least one of is represented by any one selected from Substituent Group 1: Substituent Group 1 in, -* is the position connected to Formula 1.

10. The condensed polycyclic compound according to claim 1, wherein the condensed polycyclic compound is any one selected from the compounds represented by compound group 1: Compound Group 1 11. A light emitting element, comprising: a first electrode; a second electrode on the first electrode; as well as An emission layer is between the first electrode and the second electrode and includes the condensed polycyclic compound according to any one of claims 1 to 10 as a first compound.

12. The light-emitting element according to claim 11, wherein the emission layer further comprises 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: Formula HT-1 In formula HT-1, M1 to M8 are each independently N or CR 51 , L1 is a directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms, Y a For direct connection, CR 52 R 53 or SiR 54 R 55 , Ar a 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 each independently represents 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 / or bonds with an adjacent group to form a ring, Formula ET-1 In formula ET-1, Selected from Z a To Z c At least one of them is N and is selected from Z a To Z c Any remaining group in is 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 selected from 0 to 10, and Ar b To Ar d 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 directly linked, substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 2 to 30 ring carbon atoms, Formula D-1 In formula D-1, Q1 to Q4 are each independently C or N, C1 to C4 are each independently a substituted or unsubstituted hydrocarbon ring group having 5 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 2 to 30 ring carbon atoms, L 11 To L 13 Each is independently a direct connection, *O-*, *-S-*, A substituted or unsubstituted alkylene 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, wherein -* refers to the part connected to C1 to C4, b11 to b13 are each independently 0 or 1, R 61 To R 66 each independently represents 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, or combines with an adjacent group to form a ring, and d1 to d4 are each independently an integer selected from 0 to 4.

13. A display device, comprising: Basal layer; a circuit layer on the base layer; as well as A display element layer is on the circuit layer and includes the light emitting element according to claim 11 or 12.

14. The display device according to claim 13, wherein the light emitting element further comprises a capping layer on the second electrode, and The capping layer has a refractive index of 1.6 or more with respect to light in a wavelength range of 550 nm to 660 nm.

15. The display device according to claim 13, further comprising a light control layer on the display device and comprising quantum dots, The light emitting element is configured to emit light of a first color, and The light control layer comprises: a first light control portion including a first quantum dot configured to convert the first color light into a second color light having a wavelength region longer than that of the first color light; a second light control portion including a second quantum dot configured to convert the first color light into a third color light having a wavelength region longer than that of the first color light; and A third light-controlling portion is configured to transmit the first color light.

16. The display device according to claim 15, further comprising a color filter layer on the light control layer, The color filter layer comprises: a first filter configured to transmit light of the second color; a second filter configured to transmit the third color light; and A third filter is configured to transmit the first color light.

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