Light-emitting device and electronic equipment and electronic equipment comprising same

Abstract

The invention provides a light-emitting device and electronic equipment and electronic equipment comprising the same. The light emitting device includes a first emission unit including a first red emission layer, a first green emission layer, and a first blue emission layer, and a second emission unit including a second red emission layer, a second green emission layer, and a second blue emission layer, wherein at least one selected from a first blue emission layer of the first emission unit and a second blue emission layer of the second emission unit includes two types (types) of dopants, and at least one selected from among the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer, and the second blue emission layer includes two types (categories) of hosts.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0103624 filed on August 8, 2023 in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more embodiments of the present disclosure relate to a light emitting device, and electronic equipment and electronic equipment including the light emitting device. Background Art

[0004] The light emitting device is a self-emissive device having a relatively wide viewing angle, a relatively high contrast ratio, a relatively short response time, and excellent or appropriate characteristics in terms of brightness, driving voltage, and response speed compared to devices of the prior art.

[0005] In the light-emitting device, a first electrode is arranged on a substrate, and a hole transport region, an emission layer, an electron transport region, and a second electrode are sequentially formed on the first electrode. Holes provided from the first electrode move toward the emission layer through the hole transport region, and electrons provided from the second electrode move toward the emission layer through the electron transport region. Carriers, such as holes and electrons, recombine in the emission layer to generate light. Summary of the invention

[0006] One or more aspects of the embodiments of the present disclosure are directed to a light emitting device having improved light emitting efficiency compared to light emitting devices in the related art.

[0007] 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 presented embodiments of the disclosure.

[0008] According to one or more embodiments of the present disclosure, a light emitting device includes:

[0009] The first electrode,

[0010] a second electrode facing the first electrode,

[0011] m emitting units between the first electrode and the second electrode, and

[0012] m-1 charge generation layers, each disposed between two adjacent emission units among the m emission units, wherein m is an integer of 2 or greater, and the m emission units include a first emission unit and a second emission unit,

[0013] The first emission unit includes a first red sub-pixel including a first red emission layer, a first green sub-pixel including a first green emission layer, and a first blue sub-pixel including a first blue emission layer.

[0014] The second emission unit includes a second red sub-pixel including a second red emission layer, a second green sub-pixel including a second green emission layer, and a second blue sub-pixel including a second blue emission layer.

[0015] At least one selected from the first blue emission layer and the second blue emission layer includes two types (kinds) of dopants, and

[0016] At least one selected from the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer, and the second blue emission layer includes two types (kinds) of hosts.

[0017] According to one or more embodiments of the present disclosure,

[0018] The electronic device includes a light emitting device.

[0019] According to one or more embodiments of the present disclosure,

[0020] Electronic equipment including light emitting devices,

[0021] The electronic device is at least one of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a retractable display, a laser printer, a phone, a mobile phone, a tablet computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a microdisplay, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater screen, a stadium screen, a light therapy device and a billboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated into and constitute a part of the present disclosure. The drawings illustrate embodiments of the present disclosure and together with the description are used to explain the principles of the present disclosure. The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0023] Figures 1 to 3 Each is a schematic diagram of a light emitting device according to one or more embodiments of the present disclosure; and

[0024] Figure 4 is a cross-sectional view of an electronic device according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION

[0025] The embodiments in the accompanying drawings will now be explained in more detail with reference to their examples, wherein the same reference numerals refer to the same elements throughout the present disclosure, and for the sake of brevity, their repeated description may not be provided. In this regard, the embodiments of the present disclosure may have different forms and should not be interpreted as being limited to the descriptions stated herein. Accordingly, by referring to the accompanying drawings, the embodiments of the present disclosure are only described to explain the various aspects of the present disclosure. As used herein, the term "and / or" or "or" may include any and all combinations of one or more related enumerated items. Throughout the present disclosure, expressions such as "at least one of ...", "one of ..." and "selected from ...", when before / after the list of elements, modify the entire list of elements without modifying the individual elements of the list. For example, "at least one of a, b and c", "selected from at least one of a, b and c", "selected from at least one of a to c", etc., may indicate only a, only b, only c, both a and b (e.g., a and b at the same time), both a and c (e.g., a and c at the same time), both b and c (e.g., b and c at the same time), all a, b and c, or variations thereof. As used herein, “ / ” may be interpreted as “and” or as “or” depending on the specific circumstances.

[0026] In order to improve the characteristics of the light-emitting device, a series structure in which a first emission unit and a second emission unit are stacked has been developed to replace the single-stack structure in the prior art. Specifically, by introducing a separate RGB (red, green and blue) series structure, the luminous efficiency and device life characteristics of the light-emitting device can be improved. In this regard, the optimization of the luminous efficiency and device life is necessary for their improvement.

[0027] In the prior art, emission units of the same color can be stacked, and a charge generation layer can be introduced between emission units (e.g., adjacent emission units) to reveal the characteristics of each emission unit. In order to maximize or increase the RGB luminous efficiency, optimization of the emission layer of each color is necessary. Phosphorescent materials have been applied to red emission layers and green emission layers. In a structure that is conducive to improving luminous efficiency, the use of phosphorescent emitters may not only be limited to red emission layers and green emission layers, but also be extended to blue emission layers to improve luminous efficiency.

[0028] Although the RGB tandem structure has been developed for a long time, a configuration in which the tandem structure is extended from red and green to blue has not been provided.

[0029] In an embodiment of a series light-emitting device, because the factors affecting the luminous efficiency and the life of the device are different for each emission unit, the emission unit can be changed according to the purpose and / or use instead of applying the same emission layer (hereinafter also referred to as the emission unit) to achieve additional characteristic improvements.

[0030] In one or more embodiments, in order to improve the device performance by improving the luminous efficiency of the green emission layer and the blue emission layer, a structure in which a phosphorescent complex is applied to the green emission layer and the blue emission layer has been developed. In this structure, a blue phosphorescent / thermally activated delayed fluorescence (TADF) emission layer is introduced into at least one of the two blue stacks (e.g., selected from at least one of the two blue stacks) to improve the luminous efficiency, or a blue phosphorescent / thermally activated delayed fluorescence (TADF) emission layer is introduced into one of the two blue stacks and a fluorescent or phosphorescent / TADF emission layer is applied to the other stack to achieve a device life / luminous efficiency balance or maximize the luminous efficiency in the light-emitting device.

[0031] From the perspective of molecular design, tetracoordinate platinum (Pt) complex dopants are conducive to color control and have advantages over iridium (Ir) complex dopants, especially for blue light with short wavelengths. A lot of development has been done to improve the short device life of blue phosphorescence. For example, the luminous efficiency and device life can be improved by using phosphorescent dopants alone or in combination with TADF dopants.

[0032] One or more aspects of the embodiments of the present disclosure relate to a light emitting device, comprising:

[0033] a first electrode;

[0034] a second electrode facing the first electrode;

[0035] m emission units between the first electrode and the second electrode; and

[0036] m-1 charge generation layers, each of which is arranged between two adjacent emission units among the m emission units,

[0037] Wherein m may be an integer of 2 or more, and the m transmitting units may include a first transmitting unit and a second transmitting unit,

[0038] The first emission unit may include: a first red sub-pixel including a first red emission layer; a first green sub-pixel including a first green emission layer; and a first blue sub-pixel including a first blue emission layer.

[0039] The second emission unit may include: a second red sub-pixel including a second red emission layer; a second green sub-pixel including a second green emission layer; and a second blue sub-pixel including a second blue emission layer.

[0040] At least one selected from the first blue emission layer and the second blue emission layer may include two types (kinds) of dopants, and

[0041] At least one selected from the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer, and the second blue emission layer may include two types (kinds) of hosts.

[0042] In a light-emitting device according to one or more embodiments, a second red subpixel, a second green subpixel, and a second blue subpixel of a second emission unit, which respectively includes a second red emission layer, a second green emission layer, and a second blue emission layer, may appear at positions corresponding to a first red subpixel, a first green subpixel, and a first blue subpixel of a first emission unit, which respectively includes a first red emission layer, a first green emission layer, and a first blue emission layer.

[0043] According to one or more embodiments, the light-emitting device may be a series light-emitting device including two or more emission units, wherein at least one of the first blue emission layer and the second blue emission layer selected from the two or more emission units may include two types (kinds) of dopants, thereby improving the luminous efficiency of the light-emitting device.

[0044] In one or more embodiments, the first green emission layer and / or the second green emission layer may each independently include a Pt complex dopant or an Ir complex dopant. For example, in some embodiments, the first green emission layer may include a fluorescent dopant, and the second green emission layer may include a Pt complex dopant. For example, in some embodiments, the second green emission layer may include a fluorescent dopant, and the first green emission layer may include a Pt complex dopant. For example, in some embodiments, the first green emission layer may include a Pt complex dopant, and the second green emission layer may include a Pt complex dopant. The Pt complex dopant of the first green emission layer and the Pt complex dopant of the second green emission layer may be the same or different from each other. For example, in some embodiments, the first green emission layer may include an Ir complex dopant, and the second green emission layer may include an Ir complex dopant. The Ir complex dopant of the first green emission layer and the Ir complex dopant of the second green emission layer may be the same or different from each other.

[0045] In one or more embodiments, among two types (kinds) of hosts, one may be a hole transporting host and the other may be an electron transporting host.

[0046] The hole transport host may be a compound having a strong hole property. The expression "a compound having a strong hole property" refers to a compound that easily accepts holes, and such property may be obtained by including a hole accepting part (also referred to as a hole transport (HT) part).

[0047] The hole accepting portion may include, for example, a π-electron-rich heteroaromatic compound (eg, a carbazole derivative or an indole derivative) or an aromatic amine compound.

[0048] The electron transport host may be a compound having strong electronic properties. The expression "compound having strong electronic properties" refers to a compound that easily accepts electrons, and such properties may be obtained by including an electron accepting moiety (also referred to as an electron transport (ET) moiety).

[0049] The electron accepting moiety may include, for example, a π-electron deficient heteroaromatic compound.For example, the electron accepting moiety may include a nitrogen-containing heteroaromatic compound.

[0050] When a compound includes only HT moieties or only ET moieties, it is clear whether the properties of the compound are of HT or ET nature.

[0051] In some embodiments, a compound may include (e.g., include) both a HT moiety and an ET moiety. In this regard, a simple comparison between the total number of HT moieties and the total number of ET moieties in a compound may be a criterion for predicting whether a compound is an HT compound or an ET compound, but may not be an absolute criterion. One reason why such a simple comparison may not be an absolute criterion is that the ability of an HT moiety to attract holes and the ability of an ET moiety to attract electrons are not exactly the same.

[0052] Accordingly, in order to determine whether a compound having a specific structure is a hole transport compound or an electron transport compound, simulation can be performed in advance to make predictions (e.g., appropriate selection), and ultimately, the compound can be directly applied in a device to relatively reliably determine the properties of the compound.

[0053] Further details about the subject may be the same as described herein.

[0054] In one or more embodiments, among two types (kinds) of dopants included in at least one selected from the first blue emission layer and the second blue emission layer, one may be a phosphorescent dopant and the other may be a fluorescent dopant.

[0055] For example, the phosphorescent dopant may include a Pt complex dopant or an Ir complex dopant.

[0056] For example, the fluorescent dopant may include a delayed fluorescent dopant.

[0057] In one or more embodiments, the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit may each include a phosphorescent dopant.

[0058] In one or more embodiments, the second red emission layer, the second green emission layer, and the second blue emission layer of the second emission unit may each include a phosphorescent dopant.

[0059] For example, in some embodiments, the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit may each include a phosphorescent dopant, and the second red emission layer, the second green emission layer, and the second blue emission layer of the second emission unit may each include a phosphorescent dopant.

[0060] For example, in some embodiments, the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit may each include a phosphorescent dopant, the second red emission layer and the second green emission layer of the second emission unit may each include a phosphorescent dopant, and the second blue emission layer of the second emission unit may include a fluorescent dopant.

[0061] For example, in some embodiments, the first red emission layer and the first green emission layer of the first emission unit may each include a phosphorescent dopant, the first blue emission layer of the first emission unit may include a fluorescent dopant, and the second red emission layer, the second green emission layer, and the second blue emission layer of the second emission unit may each include a phosphorescent dopant.

[0062] For example, in some embodiments, the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit may each include two types (kinds) of the host and the phosphorescent dopant, and the second red emission layer, the second green emission layer, and the second blue emission layer of the second emission unit may each include two types (kinds) of the host and the phosphorescent dopant. In this regard, the first blue emission layer and the second blue emission layer may each further include a fluorescent dopant.

[0063] For example, in some embodiments, the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit may each include two types (kinds) of hosts and phosphorescent dopants, the second red emission layer and the second green emission layer of the second emission unit may each include two types (kinds) of hosts and phosphorescent dopants, and the second blue emission layer of the second emission unit may include a single host and a fluorescent dopant. In this regard, the first blue emission layer may further include a fluorescent dopant. The fluorescent dopant may be, for example, a delayed fluorescent dopant.

[0064] In one or more embodiments, at least one selected from the first green emission layer and the second green emission layer may include a Pt complex dopant represented by Formula 1:

[0065] Formula 1

[0066]

[0067] Among them, in formula 1,

[0068] X 1 and X 2 Can be independently selected from O, S, NR 5 and CR 6 R 7 ,

[0069] X 3 and X 4 may be independently selected from N and C,

[0070] R 1 To R 7 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0071] R 10a Can be:

[0072] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0073] Each unsubstituted or substituted C 1 -C 60 Alkyl, C2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof;

[0074] Each unsubstituted or substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O) 2 (Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or

[0075] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ),

[0076] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60Alkoxy, phenyl, biphenyl or any combination thereof substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl,

[0077] a1 can be an integer selected from 1 to 4,

[0078] a2 may be an integer selected from 1 to 3,

[0079] a3 may be an integer selected from 1 to 3, and

[0080] a4 may be an integer selected from 1 to 4.

[0081] In Formula 1, when a1 is 2 or greater, multiple R 1 can be the same or different from each other. When a2 is 2 or greater, multiple R 2 can be the same or different from each other. When a3 is 2 or greater, multiple R 3 may be the same as or different from each other, and when a4 is 2 or greater, multiple R 4 Can be the same as or different from each other.

[0082] In Formula 1, R 1 To R 7 Adjacent substituents in may be connected to each other to form a ring.

[0083] From the perspective of molecular design, the tetra-coordinated Pt complex dopant represented by Formula 1 facilitates color control and has advantages over Ir complex dopant, especially for green light having a short wavelength.

[0084] In one or more embodiments, the Pt complex dopant represented by Formula 1 may include one selected from the following compounds:

[0085]

[0086] In one or more embodiments, at least one selected from the first blue emission layer and the second blue emission layer may include a Pt complex dopant represented by Formula 2:

[0087] Formula 2

[0088]

[0089] Among them, in formula 2,

[0090] A and B can each independently represent C 6 -C20 Aryl or C 3 -C 15 Heteroaryl,

[0091] X 11 and X 12 Can be independently selected from O, S, NR 16 and CR 17 R 18 ,

[0092] R 11 To R 18 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0093] R 10a and Q 1 To Q 3 may be each independently the same as described in Formula 1,

[0094] a11 may be an integer selected from 1 to 6,

[0095] a12 may be an integer selected from 1 to 3,

[0096] a13 can be selected from 1 or 2,

[0097] a14 may be an integer selected from 1 to 6, and

[0098] a15 may be an integer selected from 1 to 4.

[0099] In Formula 2, when a11 is 2 or greater, multiple R 11 can be the same or different from each other. When a12 is 2 or greater, multiple R 12 can be the same or different from each other. When a13 is 2 or greater, multiple R 13 can be the same or different from each other. When a14 is 2 or greater, multiple R 14 may be the same as or different from each other, and when a15 is 2 or greater, multiple R 15 Can be the same as or different from each other.

[0100] In Formula 2, R 11 To R 18 Adjacent substituents in may be connected to each other to form a ring.

[0101] For example, in one or more embodiments, in Formula 2, A and B may each independently represent a phenyl group, a naphthyl group, an anthracenyl group, a phenanthryl group, or a pyrenyl group.

[0102] From the perspective of molecular design, the tetra-coordinated Pt complex dopant represented by Formula 2 facilitates color control and has advantages over Ir complex dopants, especially for blue light having a short wavelength.

[0103] In one or more embodiments, the Pt complex dopant represented by Formula 2 may include one selected from the following compounds:

[0104]

[0105] More details about other dopants may be the same as described herein.

[0106] In order to maximize or increase the light emitting efficiency of a light emitting device, it is very important to configure a light emitting device having excellent or appropriate charge balance and well-preserving excitons in an emission layer of the light emitting device.

[0107] In the light-emitting device according to one or more embodiments, electrons moving from the cathode side can effectively meet holes moving from the anode side in the emission layer to form excitons, and holes or electrons can be prevented or reduced from flowing into adjacent layers and generating leakage current. Accordingly, the luminous efficiency of the light-emitting device can be improved, and the device life of the light-emitting device can be prevented or reduced from being reduced.

[0108] According to one or more embodiments, the light emitting device includes m-1 charge generation layers, each of which is arranged between two adjacent emission units among the m emission units.

[0109] See also Figure 2, the interlayer 130 may include m emission units 145(1) ... 145(m-1) and 145(m) and m-1 charge generation layers arranged between adjacent emission units among the m emission units 145(1) ... 145(m-1) and 145(m), and the m emission units 145(1) ... 145(m-1) and 145(m) may include a first emission unit 145(1) and a second emission unit 145(2) (not shown). For example, m may be an integer selected from 2 to 5.

[0110] See also Figure 2 Among the m emission units 145 ( 1 ) ... 145 ( m-1 ) and 145 ( m ), the m th emission unit closest to the first electrode 110 may be referred to as the m th emission unit 145 ( m ).

[0111] In one or more embodiments, among the m-1 charge generation layers, the m-1th charge generation layer closest to the first electrode 110 may be referred to as the m-1th charge generation layer.

[0112] In one or more embodiments, the hole transport region or the electron transport region may be arranged: between the first electrode 110 and the first emission unit 145 (1); between the first emission unit 145 (1) and the charge generation layer; between the charge generation layer and the second emission unit 145 (2); and / or between the second emission unit 145 (2) and the second electrode 150.

[0113] In one or more embodiments, the hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof.

[0114] The hole injection layer, the hole transport layer, the emission assisting layer and / or the electron blocking layer may each be a common layer.

[0115] In one or more embodiments, the electron transport region may include an electron injection layer, an electron transport layer, a hole blocking layer, or any combination thereof.

[0116] The electron injection layer, the electron transport layer and / or the hole blocking layer may each be a common layer.

[0117] In one or more embodiments, the m-1 charge generation layers may each include an n-type or species charge (eg, N-charge) generation layer and a p-type or species charge (eg, P-charge) generation layer.

[0118] In one or more embodiments, the m-1 charge generation layers may each be a common layer.

[0119] Figure 3 A schematic representation is shown in Figure 2An embodiment of an embodiment in which m=2.

[0120] See also Figure 3 , a light emitting device according to one or more embodiments may include:

[0121] A first electrode 110 (shown as an anode); a second electrode 150 (shown as a cathode) facing the first electrode 110;

[0122] two emission units between the first electrode 110 and the second electrode 150; and

[0123] A charge generation layer between two emission units. The charge generation layer may include an n-type or species charge generation layer (eg, N-charge) nCGL and a p-type or species charge generation layer (eg, P-charge) pCGL.

[0124] The first emission unit may include: a first red sub-pixel including a first red emission layer first R-EML; a first green sub-pixel including a first green emission layer first G-EML; and a first blue sub-pixel including a first blue emission layer first B-EML, and

[0125] The second emission unit may include: a second red sub-pixel including a second red emission layer second R-EML; a second green sub-pixel including a second green emission layer second G-EML; and a second blue sub-pixel including a second blue emission layer second B-EML.

[0126] The hole injection layer HIL and the hole transport layer HTL may be disposed as a common layer between the first electrode 110 and the first emission unit, the electron transport layer ETL may be disposed between the first emission unit and the charge generation layer, and the electron transport layer ETL and the electron injection layer EIL may be disposed between the second emission unit and the second electrode 150. The hole injection layer HIL, the hole transport layer HTL, the electron transport layer ETL, and the electron injection layer EIL may each be a common layer.

[0127] One or more aspects of the embodiments of the present disclosure relate to an electronic device including a light emitting device. The electronic device may further include a thin film transistor. For example, in one or more embodiments, the electronic device may further include: a thin film transistor including a source electrode and a drain electrode, wherein the first electrode of the light emitting device may be electrically connected to the source electrode or the drain electrode of the thin film transistor.

[0128] In one or more embodiments, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof. More details about the electronic device may be the same as described herein.

[0129] The term "interlayer" as used herein refers to a single layer and / or multiple layers between a first electrode and a second electrode of a light emitting device.

[0130] Figure 1 Description

[0131] Figure 1 1 is a schematic cross-sectional view of a light emitting device 10 according to one or more embodiments. The light emitting device 10 may include a first electrode 110 , an interlayer 130 , and a second electrode 150 .

[0132] In the following, reference will be made to Figure 1 The structure of the light emitting device and the method of manufacturing the light emitting device 10 according to one or more embodiments are described in more detail.

[0133] First electrode 110

[0134] exist Figure 1 In one or more embodiments, a substrate may be additionally provided and arranged under the first electrode 110 and / or on the second electrode 150. In one or more embodiments, a glass substrate or a plastic substrate may be used as the substrate. In one or more embodiments, the substrate may be a flexible substrate and may include a plastic having excellent or appropriate heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0135] The first electrode 110 may be formed, for example, by depositing or sputtering a material for forming the first electrode 110 on a substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 may be a high work function material that facilitates injection of holes.

[0136] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. In one or more embodiments, when the first electrode 110 is a transmissive electrode, a material for forming the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), zinc oxide (ZnO), or any combination thereof. In one or more embodiments, when the first electrode 110 is a semi-transmissive electrode or a reflective electrode, the material used to form the first electrode 110 may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof.

[0137] The first electrode 110 may have a single-layer structure including (eg, consisting of) a single layer or a multi-layer structure including a plurality of layers. For example, in some embodiments, the first electrode 110 may have a triple-layer structure of ITO / Ag / ITO.

[0138] Mezzanine 130

[0139] The interlayer 130 may be on the first electrode 110. The interlayer 130 includes an emission layer (hereinafter also referred to as an emission unit).

[0140] In one or more embodiments, the interlayer 130 may further include a hole transport region between the first electrode 110 and the emission layer and an electron transport region between the emission layer and the second electrode 150 .

[0141] In one or more embodiments, the interlayer 130 may further include metal-containing compounds (such as organometallic compounds) and / or inorganic materials (such as quantum dots), etc., in addition to one or more suitable organic materials.

[0142] In one or more embodiments, the interlayer 130 may include i) two or more emission units sequentially stacked between the first electrode 110 and the second electrode 150, and ii) a charge generation layer disposed between the two or more emission units. When the interlayer 130 includes two or more emission units and a charge generation layer as described above, the light emitting device 10 may be a tandem light emitting device. For example, the charge generation layer may include an n-type or kind of charge (e.g., N-charge) generation layer and a p-type or kind of charge (e.g., P-charge) generation layer.

[0143] Hole transport region in interlayer 130

[0144] The hole transport region may have i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of materials different from each other, or iii) a multilayer structure including a plurality of layers including (e.g., consisting of) a plurality of materials different from each other.

[0145] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof.

[0146] For example, in one or more embodiments, the hole transport region may have a multi-layer structure, including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission assisting layer structure, a hole injection layer / emission assisting layer structure, a hole transport layer / emission assisting layer structure or a hole injection layer / hole transport layer / emission assisting layer structure, wherein the constituent layers of each structure are stacked in sequence in the order described starting from the first electrode 110.

[0147] In one or more embodiments, the hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0148] Formula 201

[0149]

[0150] Formula 202

[0151]

[0152] Among them, in equation 201 and equation 202,

[0153] L 201 To L 204 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0154] L 205 Can be *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C 1 -C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0155] xa1 to xa4 may each independently be an integer selected from 0 to 5,

[0156] xa5 may be an integer selected from 1 to 10,

[0157] R 201 To R 204 and Q 201 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0158] R 201 and R 202 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C 1 -C 5 Alkylene is either unsubstituted or substituted with at least one R 10a Substituted C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted R 10a Substituted C 8 -C 60 Polycyclic groups (e.g., carbazole groups, etc.) (e.g., compound HT16, etc.),

[0159] R 203 and R 204 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C 1 -C 5 Alkylene is either unsubstituted or substituted with at least one R 10a Substituted C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted R 10a Substituted C 8 -C 60 polycyclic groups, and

[0160] na1 may be an integer selected from 1 to 4.

[0161] For example, in some embodiments, each of Formula 201 and Formula 202 may include at least one selected from the groups represented by Formula CY201 to Formula CY217:

[0162]

[0163] Among them, in formula CY201 to formula CY217, R 10b and R 10c Can be independently compared with R 10a Same as described, CY 201 To Ring CY204 Can be independently C 3 -C 20 Carbocyclic or C 1 -C 20 heterocyclic group, and at least one hydrogen in Formula CY201 to Formula CY217 may be unsubstituted or replaced by R 10a replace.

[0164] In one or more embodiments, ring CY in formula CY201 to formula CY217 201 To Ring CY 204 Each independently may be phenyl, naphthyl, phenanthryl or anthracenyl.

[0165] In one or more embodiments, each of Formula 201 and Formula 202 may include at least one selected from the groups represented by Formula CY201 to Formula CY203.

[0166] In one or more embodiments, Formula 201 may include at least one selected from the group represented by Formulas CY201 to CY203 and at least one selected from the group represented by Formulas CY204 to CY217.

[0167] In one or more embodiments, in Formula 201, xa1 may be 1, R 201 may be one of the groups represented by the formula CY201 to the formula CY203, xa2 may be 0, and R 202 It may be one selected from the group represented by the formula CY204 to the formula CY207.

[0168] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) any group represented by Formula CY201 to Formula CY203.

[0169] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) any group represented by Formula CY201 to Formula CY203, and may include at least one selected from the groups represented by Formula CY204 to Formula CY217.

[0170] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) any group represented by Formula CY201 to Formula CY217.

[0171] For example, in one or more embodiments, the hole transport region may include: at least one selected from the group consisting of compounds HT1 to HT46; 4,4',4"-[tris(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA); 4,4',4"-tris(N,N-diphenylamino)triphenylamine (TDATA); 4,4',4"-tris[N-(2-naphthyl)-N-phenylamino]triphenylamine (2-TNATA); N,N'-di(1-naphthyl)-N,N'-diphenyl-benzidine (NPB (NPD)); β-NPB; N,N'-bis(3-tolyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine ( TPD); spiro-TPD; spiro-NPB; methylated NPB; 4,4'-cyclohexylene-bis[N,N-bis(4-methylphenyl)aniline] (TAPC); 4,4'-bis[N,N'-(3-methylphenyl)amino]-3,3'-dimethylbiphenyl (HMTPD); 4,4',4"-tri(N-carbazolyl)triphenylamine (TCTA); polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA); poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS); polyaniline / camphorsulfonic acid (PANI / CSA); polyaniline / poly(4-styrenesulfonate) (PANI / PSS); or any combination thereof:

[0172]

[0173]

[0174]

[0175]

[0176] The thickness of the hole transport region may be about to about For example, about to about When the hole transport region includes a hole transport layer, an electron blocking layer, or any combination thereof, the thickness of the hole transport layer may be about to about For example, about to about When the thickness of the hole transport region and the hole transport layer is within the above range, satisfactory hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0177] The emission auxiliary layer can increase the light emission efficiency by compensating the optical resonance distance according to the wavelength of the light emitted from the emission layer, and the electron blocking layer can block or reduce the leakage of electrons from the emission layer to the hole transport region. The materials that can be included in the hole transport region can be included in the emission auxiliary layer and the electron blocking layer.

[0178] p-dopant

[0179] In one or more embodiments, in addition to the above materials, the hole transport region may further include a charge generation material for improvement of the conductive properties. The charge generation material may be uniformly or non-uniformly dispersed in the hole transport region (e.g., in the form of a single layer including (e.g., consisting of) the charge generation material).

[0180] The charge generating material may be, for example, a p-dopant.

[0181] For example, in some embodiments, the p-dopant can have a lowest unoccupied molecular orbital (LUMO) energy level of -3.5 eV or less.

[0182] In one or more embodiments, the p-dopant may include a quinone derivative, a cyano-containing compound, a compound containing the element EL1 and the element EL2, or any combination thereof.

[0183] Non-limiting examples of the quinone derivative may be tetracyanoquinodimethane (TCNQ) and / or 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), and the like.

[0184] Non-limiting examples of the cyano group-containing compound may be dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN) and / or a compound represented by Formula 221, etc.:

[0185]

[0186] Formula 221

[0187]

[0188] Among them, in formula 221,

[0189] R 221 To R 223 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 a heterocyclic group, and

[0190] Selected from R 221 To R 223 At least one of them may be independently C each substituted by 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group: cyano; -F; -Cl; -Br; -I; C substituted by cyano, -F, -Cl, -Br, -I or any combination thereof 1 -C 20 or any combination thereof.

[0191] In the compound containing the element EL1 and the element EL2, the element EL1 may be a metal, a metalloid, or any combination thereof, and the element EL2 may be a nonmetal, a metalloid, or any combination thereof.

[0192] Non-limiting examples of metals may be: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt ( Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), etc.); late transition metals (e.g., zinc (Zn), indium (In), tin (Sn), etc.); and / or lanthanide metals (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), etc.); etc.

[0193] Non-limiting examples of the metalloid may be silicon (Si), antimony (Sb), and / or tellurium (Te), among others.

[0194] Non-limiting examples of the non-metal may be oxygen (O) and / or halogen (eg, F, Cl, Br, I, etc.), and the like.

[0195] For example, non-limiting examples of compounds containing element EL1 and element EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, metal iodides, etc.), metalloid halides (e.g., metalloid fluorides, metalloid chlorides, metalloid bromides, metalloid iodides, etc.), metal tellurides, or one or more combinations thereof.

[0196] Non-limiting examples of metal oxides may be tungsten oxides (eg, WO, W 2 O 3 , WO 2 , WO 3 , W 2 O 5 etc.), vanadium oxides (e.g., VO, V 2 O 3 , VO 2 、V 2 O 5 etc.), molybdenum oxides (e.g., MoO, Mo 2 O 3 、MoO 2 、MoO 3 、Mo 2 O 5 etc.) and / or rhenium oxide (e.g., ReO 3 etc.

[0197] Non-limiting examples of the metal halide may be alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and / or lanthanide metal halides, and the like.

[0198] Non-limiting examples of alkali metal halides may be LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI and / or CsI, etc.

[0199] A non-limiting example of the alkaline earth metal halide may be BeF 2 MgF 2 , CaF 2 , SrF 2 , BaF 2 、BeCl 2 MgCl 2 , CaCl 2 、SrCl 2 、BaCl 2 ,BeBr 2 MgBr 2 , CaBr 2 , SrBr 2 ,BaBr 2 ,BeI 2 MgI 2 ,CaI 2 , SrI 2 and / or BaI 2 wait.

[0200] Non-limiting examples of transition metal halides may be titanium halides (eg, TiF 4 、TiCl 4 、TiBr 4 、TiI 4 etc.), zirconium halides (e.g., ZrF 4 、ZrCl 4 , ZrBr 4 , ZrI 4 etc.), hafnium halides (e.g., HfF 4 , HfCl 4 , HfBr 4 , HfI 4 etc.), vanadium halides (e.g., VF 3 、VCl 3 , VBr 3 VI 3 etc.), niobium halides (e.g., NbF 3 、NbCl 3 , NbBr 3 , NbI 3 etc.), tantalum halides (e.g., TaF 3 、TaCl 3 、TaBr 3 、TaI 3 etc.), chromium halides (e.g., CrF 3 CrCl 3 CrBr 3 CrI 3 etc.), molybdenum halides (e.g., MoF 3 、MoCl 3 、MoBr 3 、MoI 3 etc.), tungsten halides (e.g., WF 3 、WCl 3 , WBr 3 , WI 3 etc.), manganese halides (e.g., MnF 2 、MnCl 2 、MnBr 2 、MnI 2 etc.), technetium halides (e.g., TcF 2 , TcCl 2 , TcBr 2 , TcI 2 etc.), rhenium halides (e.g., ReF 2 、ReCl 2 、ReBr 2 、ReI 2 etc.), ferrous halides (e.g., FeF 2 、FeCl2 , FeBr 2 ,FeI 2 etc.), ruthenium halides (e.g., RuF 2 、RuCl 2 ,RuBr 2 , RuI 2 etc.), osmium halides (e.g., OsF 2 , OsCl 2 、OsBr 2 , OsI 2 etc.), cobalt halides (e.g., CoF 2 、CoCl 2 ,CoBr 2 、CoI 2 etc.), rhodium halides (e.g., RhF 2 , RhCl 2 , RhBr 2 , RhI 2 etc.), iridium halides (e.g., IrF 2 、IrCl 2 ,IrBr 2 ,IrI 2 etc.), nickel halides (e.g., NiF 2 、NiCl 2 、NiBr 2 , NiI 2 etc.), palladium halides (e.g., PdF 2 , PdCl 2 , PdBr 2 , PdI 2 etc.), platinum halides (e.g., PtF 2 、PtCl 2 , PtBr 2 , PtI 2 etc.), cuprous halides (e.g., CuF, CuCl, CuBr, CuI, etc.), silver halides (e.g., AgF, AgCl, AgBr, AgI, etc.) and / or gold halides (e.g., AuF, AuCl, AuBr, AuI, etc.), etc.

[0201] Non-limiting examples of late transition metal halides may be zinc halides (e.g., ZnF 2 、ZnCl 2 、ZnBr 2 、ZnI 2 etc.), indium halides (e.g., InI 3 etc.) and / or tin halides (e.g., SnI 2 etc.

[0202] Non-limiting examples of lanthanide metal halides may be YbF, YbF 2 , YbF 3 、SmF 3 、YbCl、YbCl 2 YbCl 3 、SmCl 3 , YbBr, YbBr 2 , YbBr 3 、SmBr 3 、YbI、YbI 2 ,YbI 3 and SmI 3 .

[0203] Non-limiting examples of metalloid halides may be antimony halides (e.g., SbCl 5 etc.

[0204] Non-limiting examples of metal tellurides are alkali metal tellurides (e.g., Li 2 Te、Na 2 Te, K 2 Te、Rb 2 Te, Cs 2 Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, BaTe, etc.), transition metal tellurides (e.g., TiTe 2 、ZrTe 2 、HfTe 2 、V 2 Te 3 , Nb 2 Te 3 、 2 Te 3 Cr 2 Te 3 、Mo 2 Te 3 , W 2 Te 3 , MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu 2 Te, CuTe, Ag 2 Te, AgTe, Au 2 Te, etc.), late transition metal tellurides (e.g., ZnTe, etc.) and / or lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, etc.), etc.

[0205] Emission layer in interlayer 130

[0206] When the light-emitting device 10 is a full-color light-emitting device, the emission layer may be patterned into a red emission layer, a green emission layer and / or a blue emission layer according to the sub-pixel. In one or more embodiments, the emission layer may have a stacked structure of two or more layers selected from the red emission layer, the green emission layer and the blue emission layer, wherein the two or more layers are in contact with each other or separated from each other to emit white light (e.g., combined white light). In one or more embodiments, the emission layer may include two or more materials selected from the red light-emitting material, the green light-emitting material and the blue light-emitting material, wherein the two or more materials are mixed with each other in a single layer to emit white light (e.g., combined white light).

[0207] In one or more embodiments, the emission layer may include a host and a dopant.

[0208] The amount of the dopant in the emission layer may be in the range of about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0209] The thickness of the emission layer can be about to about For example, about to about When the thickness of the emission layer is within the above range, excellent or appropriate light emitting characteristics can be obtained without significantly increasing the driving voltage.

[0210] main body

[0211] The above-mentioned single host and two types (kinds) of hosts may each independently include a compound represented by Formula 301:

[0212] Formula 301

[0213] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ,

[0214] Wherein, in Formula 301,

[0215] Ar 301 and L 301 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0216] xb11 can be 1, 2 or 3,

[0217] xb1 may be an integer selected from 0 to 5,

[0218] R 301 It may be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 301 )(Q 302 )(Q 303 )、-N(Q 301 )(Q 302 )、-B(Q 301 )(Q 302 )、-C(=O)(Q 301 )、-S(=O) 2 (Q 301 ) or -P(=O)(Q 301 )(Q 302 ),

[0219] xb21 may be an integer selected from 1 to 5, and

[0220] Q 301 To Q 303 can be independently compared with Q 1 Same as described, and R 10a May be the same as described herein.

[0221] In one or more embodiments, when xb11 in Formula 301 is 2 or greater, two or more Ar 301 Can be connected to each other via a single bond.

[0222] In one or more embodiments, the above-mentioned single host and two types (kinds) of hosts may each independently include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0223] Formula 301-1

[0224]

[0225] Formula 301-2

[0226]

[0227] Among them, in Formula 301-1 and Formula 301-2,

[0228] Ring A 301 To Ring A 304 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0229] X 301 Can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 )(R 305 ) or Si(R 304 )(R 305 ),

[0230] xb22 and xb23 can each independently be 0, 1 or 2,

[0231] L 301 , xb1 and R 301 may each be the same as described herein,

[0232] L 302 To L 304 Can be independently compared with L 301 Same as described,

[0233] xb2 to xb4 may each independently be the same as described for xb1, and

[0234] R 302 To R 305 and R 311 To R 314 Can be independently compared with R 301 Same as described.

[0235] In one or more embodiments, the single host and the two types (kinds) of hosts may each independently include an alkaline earth metal complex, a late transition metal complex, or any combination thereof. In one or more embodiments, the host may include a Be complex (e.g., compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0236] In one or more embodiments, the single host and the two types (kinds) of hosts may each independently include: at least one selected from compounds H1 to H133; 9,10-di(2-naphthyl)anthracene (ADN); 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN); 9,10-di(2-naphthyl)-2-tert-butyl-anthracene (TBADN); 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP); 1,3-di(9H-carbazol-9-yl)benzene (mCP); 1,3,5-tri(carbazol-9-yl)benzene (TCP); or any combination thereof:

[0237]

[0238]

[0239]

[0240]

[0241]

[0242]

[0243]

[0244] The emission layer may include two types (kinds) of hosts, and the two types (kinds) of hosts may include a hole transport host and an electron transport host. For example, the weight ratio of the hole transport host and the electron transport host included may be in the range of about 1:9 to about 9:1. For example, the weight ratio of the hole transport host to the electron transport host may be in the range of about 4:5 to about 5:5.

[0245] Phosphorescent dopants

[0246] In one or more embodiments, the phosphorescent dopant may include at least one transition metal as a central metal.

[0247] The phosphorescent dopant may include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, or any combination thereof.

[0248] The phosphorescent dopant may be electrically neutral.

[0249] For example, in one or more embodiments, the phosphorescent dopant may include an organometallic compound represented by Formula 401:

[0250] Formula 401

[0251] M(L 401 ) xc1 (L 402 ) xc2 ,

[0252] Wherein, in Formula 401,

[0253] M may be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)),

[0254] L 401 may be a ligand represented by Formula 402, and xc1 may be 1, 2 or 3, wherein when xc1 is 2 or greater, two or more L 401 may be the same or different from each other,

[0255] L 402 may be an organic ligand, and xc2 may be 0, 1, 2, 3 or 4, wherein when xc2 is 2 or greater, two or more L 402 may be the same or different from each other,

[0256] Formula 402

[0257]

[0258] In formula 402, X 401 and X 402 can be independently N or C,

[0259] Ring A 401 and Ring A 402 Can be independently C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group,

[0260] T 401 It can be a single bond, -O-, -S-, -C(=O)-, -N(Q 411 )-、-C(Q 411 )(Q 412 )-、-C(Q 411 )=C(Q 412 )-、-C(Q 411 )=or=C=,

[0261] X 403 and X 404 can be independently a chemical bond (e.g., a covalent bond or a coordination bond), O, S, N (Q 413 )、B(Q 413 )、P(Q 413 )、C(Q 413 )(Q 414 ) or Si(Q 413 )(Q 414 ),

[0262] Q 411 To Q 414 can be independently compared with Q 1 Same as described,

[0263] R 401 and R 402 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 401 )(Q 402 )(Q 403 )、-N(Q 401 )(Q 402 )、-B(Q 401 )(Q 402 )、-C(=O)(Q 401 )、-S(=O) 2 (Q 401 ) or -P(=O)(Q 401 )(Q 402 ),

[0264] Q 401 To Q 403 can be independently compared with Q 1 Same as described, and R 10a may be the same as described herein,

[0265] xc11 and xc12 may each independently be an integer selected from 0 to 10, and

[0266] * and *' in Formula 402 each indicate a binding site with M in Formula 401.

[0267] For example, in some embodiments, in Formula 402, i) X 401 may be nitrogen and X 402 Can be carbon, or ii) X 401 and X 402 Each of may be nitrogen.

[0268] In one or more embodiments, when xc1 in Formula 401 is 2 or greater, two or more L 401 The two rings A 401 Optionally, T as a linker 402 connected to each other, and / or two or more L 401 The two rings A 402 Optionally, T as a linking group 403 Connected to each other (see Compound PD1 to Compound PD4 and Compound PD7). 402 and T 403 Can be independently compared with T 401 Same as described.

[0269] In formula 401, L 402 It can be an organic ligand. For example, L 402 It may include halogen, diketone group (e.g., acetylacetonate group), carboxylic acid group (e.g., picolinate group), -C(=O), isonitrile group, -CN group, phosphorus-containing group (e.g., phosphine group, phosphite group, etc.) or any combination thereof.

[0270] In one or more embodiments, the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer and / or the second blue emission layer may each independently include a compound represented by Formula 401, and in these embodiments, M may be Ir.

[0271] In the ligand of the above-mentioned organometallic compound, adjacent substituents may optionally be bonded to each other to form a ring.

[0272] In one or more embodiments, the phosphorescent dopant may include, for example, one selected from Compound PD1 to Compound PD39 or any combination thereof:

[0273]

[0274]

[0275]

[0276] Fluorescent dopants

[0277] In one or more embodiments, the fluorescent dopant may include an amine-containing compound, a styrene-containing compound, or any combination thereof.

[0278] For example, in some embodiments, the fluorescent dopant may include a compound represented by Formula 501:

[0279] Formula 501

[0280]

[0281] Wherein, in Formula 501,

[0282] Ar 501 , L 501 To L 503 , R 501 and R 502 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0283] xd1 to xd3 may each independently be 0, 1, 2 or 3, and

[0284] xd4 can be 1, 2, 3, 4, 5 or 6.

[0285] In one or more embodiments, Ar in Formula 501 501 It may be a condensed ring group in which three or more monocyclic groups are condensed together (for example, anthracenyl, 1,2-triphenylenyl, pyrenyl, etc.).

[0286] In one or more embodiments, xd4 in equation 501 may be 2.

[0287] In one or more embodiments, the fluorescent dopant may include: at least one selected from Compound FD1 to Compound FD37; 4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl (DPVBi); 4,4'-bis[4-(N,N-diphenylamino)phenylvinyl]biphenyl (DPAVBi); or any combination thereof:

[0288]

[0289]

[0290]

[0291] In one or more embodiments, the emission layer may include a delayed fluorescence dopant.

[0292] The delayed fluorescence dopant described herein may be selected from compounds capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0293] The delayed fluorescence dopant included in the emission layer may act as a host or a dopant depending on the types or kinds of other materials included in the emission layer.

[0294] In one or more embodiments, the difference between the triplet energy level (eV) of the delayed fluorescence dopant and the singlet energy level (eV) of the delayed fluorescence dopant may be at least 0 eV but not more than 0.5 eV. When the difference between the triplet energy level (eV) of the delayed fluorescence dopant and the singlet energy level (eV) of the delayed fluorescence dopant satisfies the above range, up-conversion of the delayed fluorescence dopant from the triplet state to the singlet state may effectively occur, and thus, the luminous efficiency of the light-emitting device 10 may be improved.

[0295] For example, in one or more embodiments, the delayed fluorescence dopant may include i) at least one electron donor (eg, a π-electron-rich C 3 -C 60 Cyclic groups, such as carbazolyl, etc.) and at least one electron acceptor (e.g., sulfoxide, cyano, π-electron-deficient nitrogen-containing C 1 -C 60 cyclic groups, etc.), and / or ii) a C-containing material comprising at least two cyclic groups fused to each other and simultaneously sharing boron (B) 8 -C 60 Materials with polycyclic groups, etc.

[0296] Non-limiting examples of the delayed fluorescence dopant may include at least one selected from Compound DF1 to Compound DF15:

[0297]

[0298]

[0299] Electron transport region in interlayer 130

[0300] The electron transport region may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of materials different from each other, or iii) a multilayer structure including a plurality of layers including a plurality of materials different from each other.

[0301] The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0302] In one or more embodiments, the electron transport region (eg, a hole blocking layer or an electron transport layer in the electron transport region) may include a metal-free compound including at least one π-electron-deficient nitrogen-containing C 1 -C 60 Cyclic group.

[0303] For example, in some embodiments, the electron transport region may include a compound represented by Formula 601:

[0304] Formula 601

[0305] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 ,

[0306] Wherein, in Formula 601,

[0307] Ar 601 and L 601 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0308] xe11 can be 1, 2 or 3,

[0309] xe1 can be 0, 1, 2, 3, 4 or 5,

[0310] R 601 may be unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 )、-C(=O)(Q 601 )、-S(=O) 2 (Q 601 ) or -P(=O)(Q 601 )(Q 602 ),

[0311] Q 601 To Q 603 can be independently compared with Q 1 Same as described, and R 10a may be the same as described herein,

[0312] xe21 can be 1, 2, 3, 4, or 5, and

[0313] Selected from Ar 601 , L 601 and R 601 At least one of them may be independently unsubstituted or substituted by at least one R 10a Substituted π-electron-deficient nitrogen-containing C 1 -C 60 Cyclic group.

[0314] In one or more embodiments, when xe11 in Formula 601 is 2 or greater, two or more Ar 601 Can be connected to each other via a single bond.

[0315] In one or more embodiments, Ar in Formula 601 601 may be unsubstituted or substituted with at least one R 10a Substituted anthracenyl.

[0316] In one or more embodiments, the electron transport region may include a compound represented by Formula 601-1:

[0317] Formula 601-1

[0318]

[0319] Among them, in formula 601-1,

[0320] X 614 Can be N or C(R 614 ), X 615 Can be N or C(R 615 ), X 616 Can be N or C(R 616 ), and selected from X 614 To X 616 At least one of may be N,

[0321] L 611 To L 613 Can be independently compared with L 601 Same as described,

[0322] xe611 to xe613 can each independently be the same as described for xe1,

[0323] R 611 To R613 Can be independently compared with R 601 Same as described, and

[0324] R 614 To R 616 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group.

[0325] For example, in some embodiments, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 may each independently be 0, 1, or 2.

[0326] In one or more embodiments, the electron transport region may include: at least one selected from Compound ET1 to Compound ET47; 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP); 4,7-diphenyl-1,10-phenanthroline (Bphen); tris(8-hydroxyquinoline)aluminum (Alq 3 ); bis(2-methyl-8-hydroxyquinoline-N1,08)-(1,1'-biphenyl-4-hydroxy)aluminum (BAlq); 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); or any combination thereof:

[0327]

[0328]

[0329]

[0330] The thickness of the electron transport region can be about to about For example, about to about When the electron transport region includes a hole blocking layer, an electron transport layer, or any combination thereof, the thickness of the hole blocking layer may be about to about For example, about to about and the thickness of the electron transport layer can be in the range of about to about For example, about to about When the thickness of the hole blocking layer and / or the electron transport layer is within the above range, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage.

[0331] In one or more embodiments, the electron transport region (eg, an electron transport layer in the electron transport region) may further include a metal-containing material in addition to the above-mentioned materials.

[0332] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex or any combination thereof. The metal ion of the alkali metal complex may be a Li ion, a Na ion, a K ion, a Rb ion or a Cs ion, and the metal ion of the alkaline earth metal complex may be a Be ion, a Mg ion, a Ca ion, a Sr ion or a Ba ion. The ligand coordinated with the metal ion of the alkali metal complex or the metal ion of the alkaline earth metal complex may include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof.

[0333] For example, in some embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0334]

[0335] In one or more embodiments, the electron transport region may include an electron injection layer that facilitates injection of electrons from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

[0336] The electron injection layer may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of materials different from each other, or iii) a multilayer structure including a plurality of layers including a plurality of materials different from each other.

[0337] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0338] The alkali metals may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metals may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0339] The alkali metal-containing compound, the alkaline earth metal-containing compound, and the rare earth metal-containing compound may be oxides, halides (e.g., fluorides, chlorides, bromides, or iodides), or tellurides of alkali metals, alkaline earth metals, and rare earth metals, respectively, or any combination thereof.

[0340] The alkali metal-containing compound may include: alkali metal oxides, such as Li 2 O, Cs 2 O, and / or K 2 O, etc.; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI, etc.; or any combination thereof. The alkaline earth metal-containing compound may include alkaline earth metal oxides, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying 0 < x < 1) and / or Ba x Ca 1-x O (where x is a real number satisfying 0 < x < 1), etc. The rare earth metal-containing compound may include YbF 3 、ScF 3 、Sc 2 O 3 、Y 2 O 3 、Ce 2 O 3 、GdF 3 、TbF 3 、YbI 3 、ScI 3 、TbI 3 、or any combination thereof. In one or more embodiments, the rare earth metal-containing compound may include lanthanide metal tellurides. Non-limiting examples of lanthanide metal tellurides may be LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La 2 Te 3 、Ce 2 Te 3 、Pr 2 Te 3 、Nd 2 Te 3 、Pm 2 Te 3 、Sm 2 Te 3、Eu 2 Te 3 , Gd 2 Te 3 , Tb 2 Te 3 、Dy 2 Te 3 、Ho 2 Te 3 , Er 2 Te 3 、Tm 2 Te 3 , Yb 2 Te 3 and / or Lu 2 Te 3 wait.

[0341] The alkali metal complex, alkaline earth metal complex and rare earth metal complex may include i) one of the metal ions of the alkali metal, one of the metal ions of the alkaline earth metal and one of the metal ions of the rare earth metal, and ii) a ligand bonded to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof.

[0342] In one or more embodiments, the electron injection layer may include (e.g., be composed of): an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof as described above. In one or more embodiments, the electron injection layer may further include an organic material (e.g., a compound represented by Formula 601).

[0343] In one or more embodiments, the electron injection layer may include (e.g., consisting of) i) an alkali metal compound (e.g., an alkali metal halide), or ii) a) an alkali metal compound (e.g., an alkali metal halide); and b) an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof. For example, in some embodiments, the electron injection layer may be a KI:Yb co-deposition layer, a RbI:Yb co-deposition layer, and / or a LiF:Yb co-deposition layer, etc.

[0344] When the electron injection layer further includes an organic material, an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex or any combination thereof can be substantially uniformly or non-uniformly dispersed in the matrix including the organic material.

[0345] The thickness of the electron injection layer can be about to about For example, about to about When the thickness of the electron injection layer is within the above range, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0346] The second electrode 150

[0347] The second electrode 150 may be on the interlayer 130 as described above. The second electrode 150 may be a cathode as an electron injection electrode, and as a material for forming the second electrode 150, metals, alloys, conductive compounds, or any combination thereof each having a low work function may be used.

[0348] The second electrode 150 may include Li, Ag, Mg, Al, Al-Li, Ca, Mg-In, Mg-Ag, Yb, Ag-Yb, ITO, IZO, or any combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0349] The second electrode 150 may have a single-layer structure, or a multi-layer structure including a plurality of layers.

[0350] Capping layer

[0351] The first capping layer may be disposed on the outer side of the first electrode 110 (e.g., on the first electrode 110), and / or the second capping layer may be disposed on the outer side of the second electrode 150 (e.g., on the second electrode 150). In one or more embodiments, the light emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the interlayer 130, and the second electrode 150 are sequentially stacked in the stated order, a structure in which the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are sequentially stacked in the stated order, or a structure in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are sequentially stacked in the stated order.

[0352] In one or more embodiments, light generated in the emission layer of the interlayer 130 of the light emitting device 10 may be extracted toward the outside through the first electrode 110 as a semi-transmissive electrode or a transmissive electrode and the first capping layer. In one or more embodiments, light generated in the emission layer of the interlayer 130 of the light emitting device 10 may be extracted toward the outside through the second electrode 150 as a semi-transmissive electrode or a transmissive electrode and the second capping layer.

[0353] The first capping layer and the second capping layer can increase the external emission efficiency according to the principle of constructive interference. Accordingly, the light extraction efficiency of the light emitting device 10 can be increased, so that the light emitting efficiency of the light emitting device 10 can be improved.

[0354] Each of the first capping layer and the second capping layer may include a material having a refractive index of 1.6 or greater (eg, at 589 nm).

[0355] The first capping layer and the second capping layer may each independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or an organic-inorganic composite capping layer including an organic material and an inorganic material.

[0356] At least one of the first capping layer and the second capping layer may (for example, the first capping layer and the second capping layer may each independently) include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound may each be optionally substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In one or more embodiments, at least one of the first capping layer and the second capping layer may (for example, the first capping layer and the second capping layer may each independently) include an amine-containing compound.

[0357] In one or more embodiments, at least one of the first capping layer and the second capping layer may (eg, the first capping layer and the second capping layer may each independently) include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

[0358] In one or more embodiments, at least one of the first capping layer and the second capping layer may (for example, the first capping layer and the second capping layer may each independently) include: at least one selected from compounds HT28 to HT33; at least one selected from compounds CP1 to CP6; β-NPB; or any combination thereof:

[0359]

[0360] Electronic devices

[0361] The light emitting device may be included in one or more suitable electronic devices. For example, the electronic device including the light emitting device may be a light emitting device and / or an authentication device, etc.

[0362] In one or more embodiments, in addition to the light emitting device, the electronic device (e.g., a light emitting device) may further include: i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and / or the color conversion layer may be arranged in at least one direction of travel of the light emitted from the light emitting device. For example, in some embodiments, the light emitted from the light emitting device may be blue light. The details about the light emitting device may be the same as described herein. In one or more embodiments, the color conversion layer may include quantum dots. The quantum dots may be, for example, quantum dots in the prior art.

[0363] The electronic device may include a first substrate, the first substrate may include a plurality of sub-pixel regions, the color filter may include a plurality of color filter regions respectively corresponding to the plurality of sub-pixel regions, and the color conversion layer may include a plurality of color conversion regions respectively corresponding to the plurality of sub-pixel regions.

[0364] A pixel defining film may be disposed between the plurality of sub-pixel regions to define each sub-pixel region.

[0365] The color filter may further include a plurality of color filter regions and a light shielding pattern disposed between the plurality of color filter regions, and the color conversion layer may further include a plurality of color conversion regions and a light shielding pattern disposed between the plurality of color conversion regions.

[0366] The plurality of color filter regions (or the plurality of color conversion regions) may include a first region configured to emit a first color light, a second region configured to emit a second color light, and / or a third region configured to emit a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths. For example, in one or more embodiments, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. For example, in one or more embodiments, the plurality of color filter regions (or the plurality of color conversion regions) may include quantum dots. Specifically, the first region may include red quantum dots to emit red light, the second region may include green quantum dots to emit green light, and the third region may not include (e.g., may exclude) any quantum dots. The first region, the second region, and / or the third region may each further include a scatterer. In the present disclosure, "does not include one or any 'component'", "excludes one or any 'component'" and / or "no 'component'" etc. means that the "component" is not added, selected, or used as a component in the composition, but due to other impurities and / or external factors, the "component" may still be included in an appropriate amount.

[0367] For example, in one or more embodiments, the light emitting device may emit a first light, the first region may absorb the first light to emit a first-first color light, the second region may absorb the first light to emit a second-first color light, and the third region may absorb the first light to emit a third-first color light. In this regard, the first-first color light, the second-first color light, and the third-first color light may have different maximum emission wavelengths. In some embodiments, the first light may be blue light, the first-first color light may be red light, the second-first color light may be green light, and the third-first color light may be blue light.

[0368] In one or more embodiments, in addition to the light emitting device described above, the electronic device may further include a thin film transistor. The thin film transistor may include a source electrode, a drain electrode and an active layer, wherein one selected from the source electrode and the drain electrode may be electrically connected to the first electrode or the second electrode of the light emitting device.

[0369] The thin film transistor may further include a gate electrode and / or a gate insulating film, etc.

[0370] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, and / or an oxide semiconductor, etc.

[0371] In one or more embodiments, the electronic device may further include a sealing portion for sealing the light emitting device. The sealing portion may be arranged between the color filter and / or the color conversion layer and the light emitting device. The sealing portion allows light from the light emitting device to be extracted to the outside, and simultaneously (e.g., simultaneously) prevents ambient air and moisture from penetrating into the light emitting device. The sealing portion may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulation layer including at least one of an organic layer and an inorganic layer. When the sealing portion is a thin film encapsulation layer, the electronic device may be flexible.

[0372] In addition to the color filter and / or color conversion layer, various functional layers may be further arranged on the sealing portion according to the purpose of the electronic device. Examples of the functional layer may include a touch screen layer and / or a polarization layer, etc. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer.

[0373] The authentication device may be, for example, a biometric authentication device that authenticates an individual by using biometric information of a living body (eg, fingertip, pupil, etc.) In addition to the light emitting device as described above, the authentication device may further include a biometric information collector.

[0374] The electronic device can be applied to one or more displays, light sources, lighting equipment, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, electronic game consoles, medical tools (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasound diagnostic devices, or endoscope displays), fish finders, one or more appropriate measuring tools, instruments (e.g., instruments for vehicles, aircraft, and ships), and / or projectors, etc.

[0375] Electronic equipment

[0376] The light emitting device may be included in one or more suitable electronic devices.

[0377] For example, in one or more embodiments, the electronic equipment including the light emitting device may be at least one selected from a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a retractable display, a laser printer, a phone, a mobile phone, a tablet computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a video camera, a viewfinder, a microdisplay, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater screen, a stadium screen, a light therapy device, and a billboard.

[0378] The light emitting device may have excellent or appropriate light emitting efficiency and a long device life, and thus, electronic equipment including the light emitting device may have characteristics such as high brightness, high resolution, and low power consumption.

[0379] Figure 4 Description

[0380] Figure 4 is a cross-sectional view of an electronic device according to one or more embodiments of the present disclosure.

[0381] Figure 4 The electronic device may include a substrate, a pixel circuit 121 including components such as a thin film transistor and a capacitor, a light emitting device 10, and a thin film encapsulation layer for sealing the light emitting device 10. The thin film encapsulation layer may be a single layer of an organic film or an inorganic film, or may be a multilayer film in which an organic film and an inorganic film are alternately stacked. The inorganic film may include silicon oxide, silicon nitride and / or silicon oxynitride, and the organic film may include polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyaromatic ester, hexamethyldisiloxane, acrylic resin (e.g., polymethyl methacrylate, polyacrylic acid, etc.) or any combination thereof.

[0382] The thin film transistor may include an active layer, a gate electrode, a source electrode, and a drain electrode, and the first electrode 110 of the light emitting device 10 may be electrically connected to the source electrode or the drain electrode of the thin film transistor.

[0383] The light emitting device 10 may include a first electrode 110 , a second electrode 150 , and an interlayer 130 for each sub-pixel.

[0384] The interlayer 130 may include two or more emission units sequentially stacked between the first electrode 110 and the second electrode 150 , and a charge generation layer disposed between the two or more emission units.

[0385] although Figure 4 An embodiment in which the second electrode 150 is formed as a common layer is shown, but the hole injection layer, the hole transport layer, the electron transport layer, and / or the charge generation layer may each be formed as a common layer.

[0386] Manufacturing method

[0387] The layer constituting the hole transport region, the emission layer and the layer constituting the electron transport region can each be formed in a specific region by using one or more appropriate methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing and / or laser induced thermal imaging.

[0388] When the layer constituting the hole transport region, the emission layer, and the layer constituting the electron transport region are formed by vacuum deposition, the deposition temperature may be within a range of about 100° C. to about 500° C., about 10 -8 To about 10 -3 Torr in the range of vacuum and about to about Deposition is carried out at a deposition rate within a range of .

[0389] When a layer constituting a hole transport region, an emission layer, and a layer constituting an electron transport region are formed by spin coating, spin coating can be performed at a coating speed in a range of about 2,000 rpm to about 5,000 rpm and at a heat treatment temperature in a range of about 80°C to about 200°C by considering the material to be included in the layer to be formed and the structure of the layer to be formed.

[0390] Definition of term

[0391] As used herein, the term "C 3 -C 60"Carbocyclyl" refers to a cyclic group that includes only carbon (e.g., consists of carbon) as a ring-forming atom and has 3 to 60 carbon atoms, and the term "C 1 -C 60 The term "heterocyclic group" refers to a cyclic group having 1 to 60 carbon atoms and further having a hetero atom as a ring-forming atom in addition to carbon. 3 -C 60 Carbocyclic and C 1 -C 60 The heterocyclic groups may each be a monocyclic group including one (eg, only one) ring (eg, consisting of one (eg, only one) ring) or a polycyclic group in which two or more rings are fused to each other. 1 -C 60 The number of ring-forming atoms of the heterocyclic group may be 3 to 61.

[0392] As used herein, the term "cyclic group" may include (for example, simultaneously) C 3 -C 60 Carbocyclic and C 1 -C 60 Both heterocyclic groups.

[0393] As used herein, the term "π-electron-rich C 3 -C 60 The term "cyclic group" refers to a cyclic group having 3 to 60 carbon atoms and not including *-N=*' as a ring-forming part, and the term "π-electron-deficient nitrogen-containing C 1 -C 60 The "cyclic group" refers to a heterocyclic group having 1 to 60 carbon atoms and including *-N=*' as a ring-forming part.

[0394] For example,

[0395] C 3 -C 60 The carbocyclic group may be i) a group T1 or ii) a fused ring group in which two or more groups T1 are fused to each other (e.g., a cyclopentadienyl group, an adamantyl group, a norbornyl group, a phenyl group, a pentalenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylene group, a pyrenyl group, a 1,2-triphenylene group, a peryl group, a pentaphenanthrenyl group, a heptalenyl group, a tetracenyl group, a phenanthrenyl group, a hexacenyl group, a pentacene group, a rubinyl group, a coronet group, an ovalenyl group, an indenyl group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, an indenophenanthrenyl group, or an indenoanthryl group),

[0396] C 1 -C 60The heterocyclic group may be i) a group T2, ii) a condensed ring group in which two or more groups T2 are condensed to each other, or iii) a condensed ring group in which at least one group T2 and at least one group T1 are condensed to each other (e.g., pyrrolyl, thienyl, furyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothiorolyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothiorolyl, dibenzothiophenyl, dibenzofuranyl, indenocarbazolyl, indolecarbazolyl, benzofuranocarbazolyl, benzothiophenylcarbazolyl, benzothiorolocarbazolyl, benzoindolcarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothienyl, benzonaphthothiorolyl, benzofuranodibenzofuranyl, benzo furanodibenzothiophenyl, benzothiophenedibenzothiophenyl, pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolinyl, benzisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazine, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiazolyl, azadibenzothiopheneyl, azadibenzofuranyl, etc.),

[0397] Pi-electron-rich C 3 -C 60 The cyclic group may be i) a group T1, ii) a fused ring group in which two or more groups T1 are fused to each other, iii) a group T3, iv) a fused ring group in which two or more groups T3 are fused to each other, or v) a fused ring group in which at least one group T3 and at least one group T1 are fused to each other (e.g., C 3 -C 60 carbocyclic group, 1H-pyrrolyl, thiolyl, borocyclopentyl, 2H-pyrrolyl, 3H-pyrrolyl, thienyl, furyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothiolyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothiolyl, dibenzothiophenyl, dibenzofuranyl, indenocarbazolyl, indolcarbazolyl, benzofuranocarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzoindolcarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothienyl, benzonaphthothiolyl, benzofuranodibenzofuranyl, benzofuranodibenzothiophenyl, benzothiophenyldibenzothiophenyl, etc.),

[0398] π-electron-deficient nitrogen-containing C 1 -C60 The cyclic group may be i) a group T4, ii) a fused ring group in which two or more groups T4 are fused to each other, iii) a fused ring group in which at least one group T4 and at least one group T1 are fused to each other, iv) a fused ring group in which at least one group T4 and at least one group T3 are fused to each other, or v) a fused ring group in which at least one group T4, at least one group T1 and at least one group T3 are fused to each other (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazole yl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiazolyl, azadibenzothiopheneyl, azadibenzofuranyl, etc.),

[0399] The radical T1 can be cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, cycloheptenyl, adamantyl, norbornane (or bicyclo[2.2.1]heptane) group, norbornyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane or phenyl,

[0400] The radical T2 can be furanyl, thienyl, 1H-pyrrolyl, thiolyl, borocyclopentyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiolyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, tetraazinyl, pyrrolidinyl, imidazolidinyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyridazinyl or dihydropyridazinyl,

[0401] The group T3 may be furyl, thienyl, 1H-pyrrolyl, thiolyl or borocyclopentadienyl, and

[0402] The group T4 can be 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathioyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl or tetrazinyl.

[0403] As used herein, the terms "cyclic group", "C 3 -C 60 Carbocyclic group, "C 1 -C 60 Heterocyclic group", "π-electron-rich C 3 -C 60 Cyclic group" or "π-electron-deficient nitrogen-containing C 1 -C 60 A "cyclic group" may refer to a group condensed with any cyclic group, a monovalent group or a polyvalent group (e.g., a divalent group, a trivalent group, a tetravalent group, etc.) according to the structure of the formula using the corresponding term. For example, "phenyl" may be benzo, phenyl and / or phenylene, etc., and those of ordinary skill in the art may easily understand these groups based on the structure of the formula including "phenyl".

[0404] Depending on the context, in the present disclosure, a divalent group may refer to or may be a multivalent group (eg, trivalent, tetravalent, etc., not just divalent), depending on, for example, the structure of the formula associated with the term used.

[0405] Unit Price C 3 -C 60 Carbocyclic groups and monovalent C 1 -C 60 Non-limiting examples of heterocyclic groups may be C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 1 -C 60 heteroaryl, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic fused heteropolycyclic group. 3 -C 60 Carbocyclic groups and divalent C 1 -C 60 Non-limiting examples of heterocyclic groups may be C 3 -C 10 Cycloalkylene, C 1 -C 10 Heterocycloalkylene, C 3 -C 10 Cycloalkenylene, C 1 -C 10 Heterocycloalkenylene, C 6 -C 60 Arylene, C 1 -C 60a heteroarylene group, a divalent non-aromatic fused polycyclic group, and a divalent non-aromatic fused heteropolycyclic group.

[0406] As used herein, the term "C 1 -C 60 The term “alkyl” refers to a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and non-limiting examples thereof may be methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodecyl, sec-decyl and / or tert-decyl, etc. As used herein, the term “C 1 -C 60 "Alkylene" refers to C 1 -C 60 The alkyl group has substantially the same structure as a divalent group.

[0407] As used herein, the term "C 2 -C 60 "Alkenyl" refers to 2 -C 60 The alkyl group is a monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the end thereof, and non-limiting examples thereof may include vinyl, propenyl and / or butenyl, etc. As used herein, the term “C 2 -C 60 "Alkenylene" refers to C 2 -C 60 The alkenyl group has a divalent group having substantially the same structure.

[0408] As used herein, the term "C 2 -C 60 "Alkynyl" refers to a C 2 -C 60 The alkyl group is a monovalent hydrocarbon group having at least one carbon-carbon triple bond in the middle or at the end thereof, and non-limiting examples thereof may include ethynyl and / or propynyl, etc. As used herein, the term “C 2 -C 60 "Alkynylidene" refers to C 2 -C 60 Alkynyl groups have substantially the same structure as a divalent group.

[0409] As used herein, the term "C 1 -C 60 "Alkoxy" refers to -OA 101 (A 101 C 1 -C 60The term "alkyl" refers to a monovalent group represented by an alkyl group, and non-limiting examples thereof may include a methoxy group, an ethoxy group, and / or an isopropoxy group.

[0410] As used herein, the term "C 3 -C 10 The term "cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and non-limiting examples thereof may be cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl and / or bicyclo[2.2.2]octyl, etc. As used herein, the term "Cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and non-limiting examples thereof may be cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl and 3 -C 10 "Cycloalkylene" refers to 3 -C 10 The cycloalkyl group has a divalent group having substantially the same structure.

[0411] As used herein, the term "C 1 -C 10 The term "heterocycloalkyl" as used herein refers to a monovalent cyclic group of 1 to 10 carbon atoms further including at least one heteroatom as a ring-forming atom in addition to carbon atoms, and non-limiting examples thereof may be 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl and / or tetrahydrothienyl, etc. 1 -C 10 "Heterocycloalkylene" refers to a C 1 -C 10 The heterocycloalkyl group has substantially the same structure as a divalent group.

[0412] As used herein, the term "C 3 -C 10 The term "cycloalkenyl" as used herein refers to a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and having no aromaticity, and non-limiting examples thereof may be cyclopentenyl, cyclohexenyl and / or cycloheptenyl, etc. 3 -C 10 "Cycloalkenylene" refers to 3 -C 10 The cycloalkenyl group has a divalent group having substantially the same structure.

[0413] As used herein, the term "C 1 -C 10 The term "heterocycloalkenyl group" refers to a monovalent cyclic group of 1 to 10 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms in its ring structure and has at least one double bond. 1 -C 10Non-limiting examples of heterocycloalkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl and / or 2,3-dihydrothienyl, etc. As used herein, the term “C 1 -C 10 "Heterocycloalkenylene" refers to a C 1 -C 10 The heterocycloalkenyl group has a divalent group having substantially the same structure.

[0414] As used herein, the term "C 6 -C 60 "Aryl" refers to a monovalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms, and as used herein, the term "C 6 -C 60 "Arylene" refers to a divalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms. 6 -C 60 Non-limiting examples of aryl groups may be phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, pyrenyl, hexenyl, pentacene, rubenyl, coronenyl and / or ovalenyl, etc. When C 6 -C 60 Aryl and C 6 -C 60 When the arylene groups each include two or more rings, these rings may be fused to each other.

[0415] As used herein, the term "C 1 -C 60 "Heteroaryl" refers to a monovalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms. As used herein, the term "C 1 -C 60 The term "heteroarylene" refers to a divalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms. 1 -C 60 Non-limiting examples of heteroaryl groups may be pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, benzoquinolyl, isoquinolyl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthrolinyl, phthalazinyl and / or naphthyridinyl, etc. When C 1 -C 60 Heteroaryl and C 1 -C 60 When the heteroarylene groups each include two or more rings, these rings may be fused to each other.

[0416] As used herein, the term "monovalent non-aromatic fused polycyclic group" refers to a monovalent group (e.g., having 8 to 60 carbon atoms) having two or more rings fused to each other, only carbon atoms as ring-forming atoms, and generally having no aromaticity in its entire molecular structure. Non-limiting examples of monovalent non-aromatic fused polycyclic groups may be indenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, indenophenanthryl and / or indenoanthryl, etc. As used herein, the term "divalent non-aromatic fused polycyclic group" refers to a divalent group having substantially the same structure as a monovalent non-aromatic fused polycyclic group.

[0417] The term “monovalent non-aromatic fused heteropolycyclic group” as used herein refers to a monovalent group (for example, having 1 to 60 carbon atoms) having two or more rings fused to each other, further including at least one heteroatom as a ring-constituting atom in addition to carbon atoms, and having no aromaticity in its entire molecular structure as a whole. Non-limiting examples of the monovalent non-aromatic condensed heteropolycyclic group may be pyrrolyl, thienyl, furanyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothioyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothioyl, dibenzothiophenyl, dibenzofuranyl, azacarbazolyl, azafluorenyl, azadibenzothioyl, azadibenzothiophenyl, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl The term "divalent non-aromatic fused heteropolycyclic group" as used herein refers to a divalent group having substantially the same structure as a monovalent non-aromatic fused heteropolycyclic group.

[0418] As used herein, the term "C 6 -C 60 "Aryloxy" refers to -OA 102 (A 102 C 6 -C 60 aryl), and as used herein, the term "C 6 -C 60 "Arylthio" refers to -SA 103 (A 103 C 6 -C60 aryl).

[0419] As used herein, the term "C 7 -C 60 "Aralkyl" refers to -A 104 A 105 (A 104 C 1 -C 54 Alkylene, and A 105 C 6 -C 59 aryl), and as used herein, the term "C 2 -C 60 "Heteroaralkyl" refers to -A 106 A 107 (A 106 C 1 -C 59 Alkylene, and A 107 C 1 -C 59 heteroaryl).

[0420] As used herein, the term " 10a " can be:

[0421] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0422] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof;

[0423] Each unsubstituted or substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O) 2 (Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or

[0424] -Si(Q 31 )(Q 32 )(Q33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ).

[0425] The Q used in this paper 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0426] As used herein, the term "heteroatom" refers to any atom other than a carbon atom and a hydrogen atom. Non-limiting examples of heteroatoms may be O, S, N, P, Si, B, Ge, Se, and any combination thereof.

[0427] The term “third row transition metal” used herein includes hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), and the like.

[0428] As used herein, "Ph" refers to phenyl, as used herein, "Me" refers to methyl, as used herein, "Et" refers to ethyl, as used herein, "tert-Bu" or "Bu" refers to ethyl. t " refers to a tert-butyl group, and "OMe" as used herein refers to a methoxy group.

[0429] As used herein, the term "biphenyl" refers to a "phenyl group substituted by a phenyl group". In some embodiments, the "biphenyl group" may be a group having C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0430] As used herein, the term "terphenyl" refers to a "phenyl group substituted by a biphenyl group". In some embodiments, the "terphenyl group" may be a phenyl group substituted by a C 6 -C 60 Aryl substituted C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0431] The number of carbon atoms in the definition of a substituent is an example. For example, in C 1 -C 60 In the alkyl group, the number of carbon atoms (60) is an example, and the definition of alkyl group also applies to C 1 -C 20 Alkyl. The same applies in other cases.

[0432] Any hydrogen in the compound structures described herein may be optionally replaced with deuterium.

[0433] Unless otherwise defined, *, *' and *" as used herein each refer to a binding site to an adjacent atom in the corresponding formula.

[0434] Hereinafter, a light emitting device according to one or more embodiments will be described in more detail with reference to examples.

[0435] Example

[0436] Manufacturing of light-emitting devices

[0437] Example 1

[0438] As the anode, 15Ω / cm 2 ITO / Ag / ITO A glass substrate (product of Corning Incorporated) was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, cleaned by irradiation of ultraviolet rays and exposure to ozone for 15 minutes, and then loaded onto a vacuum deposition apparatus.

[0439] HT3:F4-TCNQ (3 wt %) was deposited on the ITO / Ag / ITO anode of the glass substrate to a thickness of 10 nm to form a hole injection layer as a common layer, and HT3 was deposited on the hole injection layer to a thickness of 30 nm to form a hole transport layer as a common layer.

[0440] Then, separate RGB emission layers are formed for each sub-pixel to form a first emission unit. The weight percentage of each component in each emission layer is based on the total weight of each emission layer, and the host material makes up the balance of the total percentage of each emission layer.

[0441] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0442] First green emission layer-host 1: compound 1-1 (10wt%, 30nm)

[0443] First blue emission layer-host 1: compound 2-1: DF9 (10wt%, 1wt%, 30nm)

[0444] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0445] ET46 was deposited on the RGB emission layers to a thickness of 30 nm to form an electron transport layer as a common layer. Subsequently, ET46:Li (5 wt %) was deposited thereon to a thickness of 10 nm to form an n-type or species charge generation layer as a common layer, and then, HT-05:F4-TCNQ (10 wt %) was deposited thereon to a thickness of 10 nm to form a p-type or species charge generation layer as a common layer.

[0446] After the individual RGB emission layers are stacked again on the p-type or species charge generation layer in substantially the same manner as forming the first emission unit, ET47 is deposited thereon to a thickness of 30 nm to form an electron transport layer as a common layer, and Yb is deposited thereon to a thickness of 10 nm. To form an electron injection layer as a common layer, Ag and Mg were co-deposited thereon at a weight ratio of 9:1. to form a cathode, and CPL is deposited thereon to to form a capping layer, thereby completing the manufacture of the light-emitting device.

[0447] Example 2

[0448] As the anode, 15Ω / cm 2 ITO / Ag / ITO A glass substrate (product of Corning Incorporated) was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, cleaned by irradiation of ultraviolet rays and exposure to ozone for 15 minutes, and then loaded onto a vacuum deposition apparatus.

[0449] HT3:F4-TCNQ (3 wt %) was deposited on the ITO / Ag / ITO anode of the glass substrate to a thickness of 10 nm to form a hole injection layer as a common layer, and HT3 was deposited on the hole injection layer to a thickness of 30 nm to form a hole transport layer as a common layer.

[0450] Then, separate RGB emission layers are formed for each sub-pixel to form a first emission unit.

[0451] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0452] First green emission layer-host 1-1: compound 1-1 (10wt%, 30nm)

[0453] First blue emission layer-host 1-2: compound 2-1: DF9 (10wt%, 1wt%, 30nm)

[0454] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0455] The body 1-1 is a mixed body including H129 and H132 in a weight ratio of 5:5.

[0456] Body 1-2 is a mixed body including H133 and H132 in a weight ratio of 5:5.

[0457] ET46 was deposited on the RGB emission layers to a thickness of 30 nm to form an electron transport layer as a common layer. Subsequently, ET46:Li (5 wt %) was deposited thereon to a thickness of 10 nm to form an n-type or species charge generation layer as a common layer, and then, HT-05:F4-TCNQ (10 wt %) was deposited thereon to a thickness of 10 nm to form a p-type or species charge generation layer as a common layer.

[0458] After the individual RGB emission layers are stacked again on the p-type or species charge generation layer in substantially the same manner as forming the first emission unit, ET47 is deposited thereon to a thickness of 30 nm to form an electron transport layer as a common layer, and Yb is deposited thereon to a thickness of 10 nm. To form an electron injection layer as a common layer, Ag and Mg were co-deposited thereon at a weight ratio of 9:1. to form a cathode, and CPL is deposited thereon to to form a capping layer, thereby completing the manufacture of the light-emitting device.

[0459] Example 3

[0460] As the anode, 15Ω / cm 2 ITO / Ag / ITO A glass substrate (product of Corning Incorporated) was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, cleaned by irradiation of ultraviolet rays and exposure to ozone for 15 minutes, and then loaded onto a vacuum deposition apparatus.

[0461] HT3:F4-TCNQ (3 wt %) was deposited on the ITO / Ag / ITO anode of the glass substrate to a thickness of 10 nm to form a hole injection layer as a common layer, and HT3 was deposited on the hole injection layer to a thickness of 30 nm to form a hole transport layer as a common layer.

[0462] Then, separate RGB emission layers are formed for each sub-pixel to form a first emission unit.

[0463] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0464] First green emission layer - host 1: PD13 (10wt%, 30nm)

[0465] First blue emission layer - host 1: PD17: DF9 (10wt%, 1wt%, 30nm)

[0466] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0467] ET46 was deposited on the RGB emission layers to a thickness of 30 nm to form an electron transport layer as a common layer. Subsequently, ET46:Li (5 wt %) was deposited thereon to a thickness of 10 nm to form an n-type or species charge generation layer as a common layer, and then, HT-05:F4-TCNQ (10 wt %) was deposited thereon to a thickness of 10 nm to form a p-type or species charge generation layer as a common layer.

[0468] After the individual RGB emission layers are stacked again on the p-type or species charge generation layer in substantially the same manner as forming the first emission unit, ET47 is deposited thereon to a thickness of 30 nm to form an electron transport layer as a common layer, and Yb is deposited thereon to a thickness of 10 nm. To form an electron injection layer as a common layer, Ag and Mg were co-deposited thereon at a weight ratio of 9:1. to form a cathode, and CPL is deposited thereon to to form a capping layer, thereby completing the manufacture of the light-emitting device.

[0469] Example 4

[0470] As the anode, 15Ω / cm 2 ITO / Ag / ITO A glass substrate (product of Corning Incorporated) was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, cleaned by irradiation of ultraviolet rays and exposure to ozone for 15 minutes, and then loaded onto a vacuum deposition apparatus.

[0471] HT3:F4-TCNQ (3 wt %) was deposited on the ITO / Ag / ITO anode of the glass substrate to a thickness of 10 nm to form a hole injection layer as a common layer, and HT3 was deposited on the hole injection layer to a thickness of 30 nm to form a hole transport layer as a common layer.

[0472] Then, separate RGB emission layers are formed for each sub-pixel to form a first emission unit.

[0473] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0474] First green emission layer-host 1: compound 1-1 (10wt%, 30nm)

[0475] First blue emission layer - host 1: DF9 (10wt%, 30nm)

[0476] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0477] ET46 was deposited on the RGB emission layers to a thickness of 30 nm to form an electron transport layer as a common layer. Subsequently, ET46:Li (5 wt %) was deposited thereon to a thickness of 10 nm to form an n-type or species charge generation layer as a common layer, and then, HT-05:F4-TCNQ (10 wt %) was deposited thereon to a thickness of 10 nm to form a p-type or species charge generation layer as a common layer.

[0478] On the p-type or kind of charge generation layer, separate RGB emission layers are again formed for each sub-pixel to form a second emission unit.

[0479] Second red emission layer-host 1: PD9 (2wt%, 40nm)

[0480] Second green emission layer-host 1: compound 1-1 (10wt%, 30nm)

[0481] Second blue emission layer-host 1: compound 2-1: DF9 (10wt%, 1wt%, 30nm)

[0482] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0483] Then, after ET47 was deposited on the RGB emission layers to a thickness of 30 nm to form an electron transport layer as a common layer, Yb was deposited thereon to a thickness of 10 nm. To form an electron injection layer as a common layer, Ag and Mg were co-deposited thereon at a weight ratio of 9:1. to form a cathode, and CPL is deposited thereon to to form a capping layer, thereby completing the manufacture of the light-emitting device.

[0484] Comparative Example 1

[0485] A light emitting device was manufactured in substantially the same manner as in Example 1, except that each RGB emission layer of the first emission unit and the second emission unit was formed for each sub-pixel as follows.

[0486] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0487] First green emission layer - host 1: PD13 (10wt%, 30nm)

[0488] First blue emission layer - ADN:FD1 (1wt%, 30nm)

[0489] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0490] Second red emission layer-host 1: PD9 (2wt%, 40nm)

[0491] Second green emission layer-host 1: PD13 (10wt%, 30nm)

[0492] Second blue emission layer-ADN:FD1 (1wt%, 30nm)

[0493] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0494] Comparative Example 2

[0495] A light emitting device was manufactured in substantially the same manner as in Example 1, except that each RGB emission layer of the first emission unit and the second emission unit was formed for each sub-pixel as follows.

[0496] First red emission layer - host 1: PD9 (2wt%, 40nm)

[0497] First green emission layer - host 1: PD13 (10wt%, 30nm)

[0498] First blue emission layer - host 1: PD17 (1wt%, 30nm)

[0499] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0500] Second red emission layer-host 1: PD9 (2wt%, 40nm)

[0501] Second green emission layer-host 1: PD13 (10wt%, 30nm)

[0502] Second blue emission layer - host 1: PD17 (1wt%, 30nm)

[0503] Body 1 is a mixed body including H129 and H130 in a weight ratio of 5:5.

[0504] Comparative Example 3

[0505] A light emitting device was manufactured in substantially the same manner as in Example 1, except that each RGB emission layer of the first emission unit and the second emission unit was formed for each sub-pixel as follows.

[0506] First red emission layer - CBP:PD9 (2wt%, 40nm)

[0507] First green emission layer-CBP: Compound 1-1 (10wt%, 30nm)

[0508] First blue emission layer - CBP: Compound 2-1: DF9 (10wt%, 1wt%, 30nm)

[0509] Second red emission layer-CBP:PD9 (2wt%, 40nm)

[0510] Second green emission layer-CBP: Compound 1-1 (10wt%, 30nm)

[0511] Second blue emission layer-CBP: Compound 2-1: DF9 (10wt%, 1wt%, 30nm)

[0512]

[0513] The results of the light emitting device are shown in Table 1.

[0514] The luminous efficiency and device lifetime of the light emitting devices were measured by using a measuring device C9920-2-12 manufactured by Hamamatsu Photonics Inc. The luminous efficiency and device lifetime of each of the light emitting devices were calculated by referring to the luminous efficiency and device lifetime of Comparative Example 1, respectively.

[0515] Table 1

[0516]

[0517]

[0518] Referring to Table 1, it is confirmed that the light-emitting devices of the examples each have a comparable or higher light-emitting efficiency and a comparable or higher device lifespan than the light-emitting device of the comparative example.

[0519] As described above, when compared with a light emitting device in the related art, according to one or more embodiments, a light emitting device may show improved results in terms of light emitting efficiency and device lifespan.

[0520] In the present disclosure, it will be understood that the terms “comprise(s)”, “include(s)” or “have / has” indicate the presence of stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0521] Throughout the present disclosure, when it is mentioned that a component (such as a layer, film, region, or plate) is placed "on" another component (such as a layer, film, region, or plate), it will be understood that it can be directly on the other component (such as a layer, film, region, or plate) or another component (such as a layer, film, region, or plate) can be inserted therebetween. In some embodiments, "directly on..." can refer to the absence of additional layers, films, regions, plates, etc. between the layer, film, region, plate, etc. and other components. For example, "directly on..." can refer to the provision of two layers or two components without the use of additional components, such as adhesive components therebetween.

[0522] In the present disclosure, although the terms "first", "second", etc. may be used herein to describe one or more elements, components, regions and / or layers, these elements, components, regions and / or layers should not be limited by these terms. These terms are only used to distinguish one component from another component.

[0523] As used herein, the singular forms "a", "an", "one", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the use of "may" when describing embodiments of the present disclosure refers to "one or more embodiments of the present disclosure."

[0524] As used herein, the terms "substantially," "about," or similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measurements or calculations that one of ordinary skill in the art would recognize. "About," as used herein, includes the specified value and means within the range of acceptable deviations of the particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of a specified value, or within ±30%, ±20%, ±10%, or ±5% of a specified value.

[0525] Any numerical range described in this article is intended to include all sub-ranges of the same numerical precision within the range of description. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the minimum value 1.0 described and the maximum value 10.0 described (and including 1.0 and 10.0), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limit described in this article is intended to include all lower numerical limits included therein and any minimum numerical limit described in this disclosure is intended to include all higher numerical limits included therein. Accordingly, the applicant reserves the right to modify this disclosure (including claims) to explicitly describe any sub-ranges included within the range explicitly described in this article.

[0526] Light-emitting devices, light-emitting devices, electronic devices, electronic equipment, or any other related devices or components can be implemented using any appropriate hardware, firmware (e.g., dedicated integrated circuits), software, or a combination of software, firmware, and hardware. For example, the various components of the device can be formed on an integrated circuit (IC) chip or on a separate IC chip. In addition, the various components of the device can be implemented on a flexible printed circuit film, a tape carrier package (TCP), or a printed circuit board (PCB), or formed on a substrate. In addition, the various components of the device can be processes or threads running on one or more processors in one or more computing devices, executing computer program instructions and interacting with other system components to perform the various functions described herein. Computer program instructions are stored in a memory, which can be implemented in a computing device using a standard memory device, such as, for example, a random access memory (RAM). Computer program instructions can also be stored in other non-temporary computer-readable media, such as, for example, a CD-ROM or a flash drive, etc. Moreover, those skilled in the art should recognize that without departing from the scope of the embodiments of the present disclosure, the functions of various computing devices can be combined or integrated into a single computing device, or the functions of a dedicated computing device can be distributed on one or more other computing devices.

[0527] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects in each embodiment should generally be considered to be applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that one or more appropriate changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims and their equivalents.

Claims

1. A light emitting device, comprising: a first electrode; a second electrode facing the first electrode; m emitting units between the first electrode and the second electrode; as well as m-1 charge generation layers, each of which is arranged between two adjacent emission units in the m emission units, wherein m is an integer of 2 or greater, and the m transmitting units include a first transmitting unit and a second transmitting unit, The first emission unit includes: a first red sub-pixel including a first red emission layer; a first green sub-pixel including a first green emission layer; and a first blue sub-pixel including a first blue emission layer. The second emission unit includes: a second red sub-pixel including a second red emission layer; a second green sub-pixel including a second green emission layer; and a second blue sub-pixel including a second blue emission layer. At least one selected from the first blue emission layer and the second blue emission layer includes two types of dopants, and At least one selected from the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer, and the second blue emission layer includes two types of hosts. 2 . The light-emitting device according to claim 1 , wherein the first green emission layer and / or the second green emission layer each independently comprises a Pt complex dopant or an Ir complex dopant.

3. The light emitting device according to claim 1, wherein: In both types of subjects, One is a hole transport host, and The other type is the electron transport entity.

4. The light emitting device according to claim 1, wherein: Of the two types of dopants, One type is phosphorescent dopant, and The other type is fluorescent dopants. The light-emitting device according to claim 4 , wherein the phosphorescent dopant comprises a Pt complex dopant or an Ir complex dopant. The light emitting device according to claim 4 , wherein the fluorescent dopant comprises a delayed fluorescent dopant. 7 . The light emitting device of claim 1 , wherein the first red emission layer, the first green emission layer, and the first blue emission layer of the first emission unit each include a phosphorescent dopant. 8 . The light emitting device of claim 1 , wherein the second red emission layer, the second green emission layer, and the second blue emission layer of the second emission unit each include a phosphorescent dopant.

9. The light emitting device according to claim 1, wherein at least one selected from the first green emission layer and the second green emission layer comprises a Pt complex dopant represented by Formula 1: Formula 1 and in, In formula 1, X1 and X2 are each independently selected from O, S, NR5 and CR6R7, X3 and X4 are each independently selected from N and C, R1 to R7 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, unsubstituted or substituted with at least one R 10a Substituted C1-C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 heterocyclic group, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl, a1 is an integer selected from 1 to 4, a2 is an integer selected from 1 to 3, a3 is an integer selected from 1 to 3, and a4 is an integer selected from 1-4.

10. The light-emitting device according to claim 9, wherein the Pt complex dopant represented by Formula 1 comprises one selected from Compound 1-1 to Compound 1-11:

11. The light emitting device according to claim 1, wherein at least one selected from the first blue emission layer and the second blue emission layer comprises a Pt complex dopant represented by Formula 2: Formula 2 and in, In formula 2, A and B each independently represent C6-C 20 Aryl or C3-C 15 Heteroaryl, X 11 and X 12 Each independently selected from O, S, NR 16 and CR 17 R 18 , R 11 To R 18 Each is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 heterocyclic group, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl, a11 is an integer selected from 1 to 6, a12 is an integer selected from 1 to 3, a13 is selected from 1 or 2, a14 is an integer selected from 1 to 6, and a15 is an integer selected from 1 to 4.

12. The light-emitting device according to claim 11, wherein the Pt complex dopant represented by Formula 2 comprises one selected from Compound 2-1 to Compound 2-8:

13. The light-emitting device according to claim 1, wherein the first red emission layer, the second red emission layer, the first green emission layer, the second green emission layer, the first blue emission layer and / or the second blue emission layer each independently comprises a compound represented by Formula 401: Formula 401 M(L 401 ) xc1 (L 402 ) xc2 ,and in, In formula 401, M is Ir, L 401 is a ligand represented by formula 402, and xc1 is 1, 2 or 3, wherein when xc1 is 2 or greater, two or more L 401 Same or different from each other, L 402 is an organic ligand, and xc2 is 0, 1, 2, 3 or 4, wherein when xc2 is 2 or greater, two or more L 402 Same or different from each other, Formula 402 In formula 402, X 401 and X 402 are each independently N or C, Ring A 401 and Ring A 402 Each independently is C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group, T 401 is a single bond, -O-, -S-, -C(=O)-, -N(Q 411 )-、-C(Q 411 )(Q 412 )-、-C(Q 411 )=C(Q 412 )-、-C(Q 411 )= or =C=, X 403 and X 404 Each independently represents a chemical bond, O, S, N (Q 413 )、B(Q 413 )、P(Q 413 )、C(Q 413 )(Q 414 ) or Si(Q 413 )(Q 414 ), R 401 and R 402 Each is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic group, -Si(Q 401 )(Q 402 )(Q 403 )、-N(Q 401 )(Q 402 )、-B(Q 401 )(Q 402 )、-C(=O)(Q 401 )、-S(=O)2(Q 401 ) or -P(=O)(Q 401 )(Q 402 ), R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), Q 11 To Q 13 , Q 21 To Q 23 , Q 31 To Q 33 , Q 411 To Q 414 and Q 401 To Q 403 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl, xc11 and xc12 are each independently an integer selected from 0 to 10, and * and *' in Formula 402 each indicate a binding site with M in Formula 401.

14. The light-emitting device according to claim 1, wherein the hole transport region or the electron transport region: between the first electrode and the first emitting unit; between the first emission unit and one of the m-1 charge generation layers; between one of the m-1 charge generation layers and the second emission unit; and / or between the second emitting unit and the second electrode. 15 . The light-emitting device according to claim 14 , wherein the hole transport region comprises a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer or any combination thereof. The light-emitting device according to claim 14 , wherein the electron transport region comprises an electron injection layer, an electron transport layer, a hole blocking layer or any combination thereof. 17 . The light emitting device according to claim 1 , wherein the m-1 charge generation layers include an n-type charge generation layer and a p-type charge generation layer. The light-emitting device according to claim 1 , wherein the m-1 charge generation layers are a common layer.

19. An electronic device comprising the light emitting device according to any one of claims 1 to 18.

20. An electronic device comprising a light emitting device according to any one of claims 1 to 18, wherein the electronic device is at least one of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a retractable display, a laser printer, a phone, a tablet computer, a personal digital assistant, a wearable device, a laptop computer, a digital camera, a video camera, a viewfinder, a microdisplay, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater screen, a stadium screen, a light therapy device, and a billboard.

Images