Organic compound and organic light-emitting diode and

Abstract

The invention discloses an organic compound, and an organic light emitting diode and an organic light emitting device comprising the same. For example, the organic compound is represented by the following chemical formula. The organic light-emitting diode and the organic light-emitting device each contain the organic compound. # imgabs0 #

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of and priority to Korean Patent Application No. 10-2023-0151867 filed in Korea on November 6, 2023. Technical Field

[0003] The present application relates to an organic compound, and more particularly, to an organic compound capable of improving driving voltage, luminous efficiency and lifespan, and also to an organic light-emitting device including the organic compound. Background Art

[0004] Recently, as the demand for small-area flat panel display devices increases, organic light emitting display devices including organic light emitting diodes (OLEDs) have become the subject of recent research and development.

[0005] OLED emits light by injecting electrons from a cathode as an electron injection electrode and holes from an anode as a hole injection electrode into a light-emitting material layer (EML), combining electrons with holes, generating excitons, and converting the excitons from an excited state to a ground state. A flexible substrate (e.g., a plastic substrate) can be used as a bottom substrate for forming an element. In addition, an organic light-emitting display device can operate at a voltage (e.g., below 10V) lower than the operating voltage of other display devices. In addition, an organic light-emitting display device has improved power consumption and color.

[0006] The OLED includes, on a substrate, a first electrode as an anode, a second electrode as a cathode spaced apart from and facing the first electrode, and an organic light emitting layer between the first electrode and the second electrode.

[0007] Although there have been a lot of research and development on materials for organic light-emitting layers, OLEDs still have limitations in terms of driving voltage, luminous efficiency, and lifespan. Summary of the invention

[0008] [Technical issues]

[0009] The present invention is directed to an organic compound, an organic light emitting diode, and an organic light emitting device that substantially obviate one or more problems associated with limitations and disadvantages of the related art.

[0010] Other features and advantages of the present invention are set forth in the following description and will be apparent from the description or will be clarified through the practice of the present invention. The objects and other advantages of the present invention are realized and achieved by the features described herein and in the accompanying drawings.

[0011] To achieve these and other advantages according to the purpose of embodiments of the present invention, as described herein, one aspect of the present invention is an organic compound represented by Formula 1:

[0012] [Formula 1]

[0013]

[0014] wherein a1 is an integer from 0 to 5, a2 is an integer from 0 to 3, wherein each R1 is selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, wherein each R2 is selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, wherein when a1 is 2 or more, two or more R1 groups are the same or different, wherein when a2 is 2 or more, two or more R2 groups are the same or different, wherein L1, L2 and L3 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, wherein Ar1 is selected from Formula 1a-1 to Formula 1a-5,

[0015] [Formula 1a-1]

[0016]

[0017] [Formula 1a-2]

[0018]

[0019] [Formula 1a-3]

[0020]

[0021] [Formula 1a-4]

[0022]

[0023] [Formula 1a-5]

[0024]

[0025] wherein, in formula 1a-1, b1 is an integer from 0 to 5, wherein, in formula 1a-2, b2 is an integer from 0 to 7, wherein, in each of formulas 1a-3 to 1a-5, b3 is each independently an integer from 0 to 4, wherein, when b1, b2 and b3 are each 2 or more, two or more R3 groups are the same or different, wherein, in formula 1a-4, V1 is selected from O, S and C(R3)2, wherein, in formula 1a-5, V1 is selected from O and S, wherein, in each of formulas 1a-1 to 1a-5, R3 is each selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group and a substituted or unsubstituted C3 to C60 heteroaryl group,

[0026] Wherein, Ar2 is selected from Formula 1b-1 and Formula 1b-2,

[0027] [Formula 1b-1]

[0028]

[0029] [Formula 1b-2]

[0030]

[0031] wherein, in each of formulae 1b-1 and 1b-2, b4 is an integer from 0 to 4, wherein R4 is each independently selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, wherein when b4 is 2 or more, two or more R4 groups are the same or different, and

[0032] Wherein, in Formula 1b-2, R5 is selected from the group consisting of hydrogen, deuterium, a C1 to C10 alkyl group which may be substituted, and a C6 to C60 aryl group which may be substituted.

[0033] In a preferred embodiment, Ar1 and Ar2 are different.

[0034] Another aspect of the present invention is an organic light-emitting device, which includes: a substrate; an organic light-emitting diode located on the substrate and including a first electrode; a second electrode facing the first electrode; and a first light-emitting component between the first electrode and the second electrode, the first light-emitting component including a first light-emitting material layer, wherein the first light-emitting material layer includes a first compound of the above-mentioned organic compound.

[0035] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

[0037] Figure 1 A schematic circuit diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

[0038] Figure 2 A schematic cross-sectional view showing an organic light emitting display device according to a first embodiment of the present invention.

[0039] Figure 3 A schematic cross-sectional view showing an OLED according to a second embodiment of the present invention.

[0040] Figure 4 A schematic cross-sectional view showing an OLED according to a third embodiment of the present invention.

[0041] Figure 5 A schematic cross-sectional view showing an organic light emitting display device according to a fourth embodiment of the present invention.

[0042] Figure 6 A schematic cross-sectional view showing an OLED according to a fifth embodiment of the present invention.

[0043] Figure 7 A schematic cross-sectional view showing an OLED according to a sixth embodiment of the present invention.

[0044] Figure 8 A schematic cross-sectional view showing an organic light emitting display device according to a seventh embodiment of the present invention.

[0045] Fig. 9 A schematic cross-sectional view showing an OLED according to an eighth embodiment of the present invention.

[0046] Fig.10 A schematic cross-sectional view showing an OLED according to a ninth embodiment of the present invention. DETAILED DESCRIPTION

[0047] Reference will now be made in detail to some examples and implementations of the present invention which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts.

[0048] Advantages and features of the present invention and methods of implementing the same will be described by the following exemplary embodiments described with reference to the accompanying drawings. However, the present invention can be implemented in different forms and should not be construed as being limited to the exemplary embodiments illustrated herein. On the contrary, these exemplary embodiments are provided so that the present invention can be fully thorough and complete, thereby helping those skilled in the art to fully understand the scope of the present invention. In addition, the scope of protection of the present invention is defined by the claims or their equivalents.

[0049] The shapes, sizes, proportions, angles, numbers, etc., illustrated in the drawings to describe the various exemplary embodiments of the present invention are given by way of example only. Therefore, the present invention is not limited to the illustrations in the drawings. The same reference numerals are used throughout the specification to designate the same or similar elements unless otherwise specified.

[0050] In the following description, when detailed descriptions of related known functions or configurations may unnecessarily obscure the gist of the present invention, detailed descriptions of known functions of these configurations may be omitted.

[0051] In this specification, when the terms "comprising", "having", "including", etc. are used, one or more other elements may be added unless terms such as "only" are used. Elements described in the singular are intended to include plural elements and vice versa unless the context clearly indicates otherwise.

[0052] In interpreting an element, the element is to be interpreted as including an error or tolerance range even when an explicit description of such an error or tolerance range is not provided.

[0053] In various embodiments of the present invention, when describing a positional relationship, for example, when using "on", "above", "below", "over", "below", "beside", "adjacent", etc. to describe the positional relationship between two parts, one or more other parts may be located between the two parts, unless more restrictive terms such as "immediately", "directly" or "closely" are used. For example, when one element or layer is disposed "on" another element or layer, a third layer or element may be disposed therebetween.

[0054] When describing a temporal relationship, when the temporal order is described as, for example, "after", "subsequently", "next", or "before", discontinuities may be included unless more restrictive terms such as "directly", "immediately", or the like are used.

[0055] Although the terms "first", "second", etc. may be used herein to describe various elements, the elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present invention, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0056] Although the terms "first", "second", A, B, (a), (b), etc. may be used herein to describe various elements, the elements should not be interpreted as being limited by these terms because they are not used to define a specific order, priority or quantity of the corresponding elements. These terms are only used to distinguish one element from another.

[0057] The statement that an element or layer is “connected to” another element or layer means that the element or layer may not only be directly connected to the other element or layer but also be indirectly connected or adhered to the other element or layer by having one or more intermediate elements or layers “disposed” or “interposed” between the elements or layers, unless otherwise specified.

[0058] The term "at least one" should be understood to include any and all combinations of more than one of the related listed items. For example, the meaning of "at least one of the first element, the second element, and the third element" includes the combination of all three listed elements, the combination of any two of the three elements, and each individual element, namely the first element, the second element, and the third element.

[0059] As those skilled in the art can fully understand, the features of various embodiments of the present invention can be partially or completely combined or combined with each other, and can be technically operated and driven in various ways. The embodiments of the present invention can be performed independently of each other, or can be performed together in a mutually dependent relationship.

[0060] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. When adding reference numerals to the elements of each drawing, similar reference numerals may refer to similar elements even though the same elements are illustrated in other drawings. In addition, for ease of description, the proportion of each element illustrated in the drawings may be different from the actual proportion. Therefore, the illustrated elements are not limited to the specific proportions they are illustrated in the drawings.

[0061] The OLED of the present invention may include an example of the organic compound of the present invention. The OLED may be included in an organic light-emitting display device or an organic light-emitting device. The following description focuses on an example of an organic light-emitting display device including the OLED of the present invention.

[0062] Figure 1 A schematic circuit diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

[0063] like Figure 1As shown, gate lines GL and data lines DL and power lines PL that may cross each other to define a pixel region P may be formed on the organic light display device. A switching thin film transistor (TFT) Ts, a driving thin film transistor (TFT) Td, a storage capacitor Cst, and an OLED D may be formed in the pixel region P. The pixel region P may include a red pixel region, a green pixel region, and a blue pixel region. In addition, the pixel region P may further include a white pixel region.

[0064] The switching thin film transistor Ts may be connected to the gate line GL and the data line DL, and the driving thin film transistor Td and the storage capacitor Cst may be connected between the switching thin film transistor Ts and the power line PL. The OLED D may be connected to the driving thin film transistor Td. When the switching thin film transistor Ts is turned on by a gate signal applied through the gate line GL, a data signal applied through the data line DL may be applied to the gate of the driving thin film transistor Td and one electrode of the storage capacitor Cst through the switching thin film transistor Ts.

[0065] The driving thin film transistor Td can be turned on by a data signal applied to the gate, so that a current proportional to the data signal can be supplied from the power line PL to the OLED D through the driving thin film transistor Td. The OLED D can emit light with a brightness proportional to the current flowing through the driving thin film transistor Td. In this case, the storage capacitor Cst can be charged with a voltage proportional to the data signal, so that the voltage of the gate in the driving thin film transistor Td can be kept constant or similar during one frame. Therefore, the organic light emitting display device can display a desired image.

[0066] Figure 2 A schematic cross-sectional view showing an organic light emitting display device according to a first embodiment of the present invention.

[0067] like Figure 2 As shown, the organic light emitting display device 100 may include a substrate 110, a TFT Tr, and an OLED D connected to the TFT Tr. For example, the organic light emitting device 100 may include a red pixel region, a green pixel region, and a blue pixel region, and the OLED D may be arranged in each of the red, green, and blue pixel regions. The organic light emitting display device 100 may also include a yellow-green pixel region, and the OLED D may be arranged in the yellow-green pixel region. For example, the OLED D emitting red light, green light, blue light, and yellow-green light may be arranged in the red, green, blue, and yellow-green pixel regions, respectively.

[0068] The substrate 110 may be a glass substrate or a flexible substrate. For example, the flexible substrate may be a polyimide (PI) substrate, a polyethersulfone (PES) substrate, a polyethylene naphthalate (PEN) substrate, a polyethylene terephthalate (PET) substrate, or a polycarbonate (PC) substrate.

[0069] The buffer layer 120 may be formed on the substrate, and the TFT Tr may be formed on the buffer layer 120. The buffer layer 120 may be formed of an inorganic insulating material, such as silicon oxide or silicon nitride. The buffer layer 120 may have a multilayer structure including a first layer of silicon oxide and a second layer of silicon nitride. The buffer layer 120 may be omitted, and the TFT Tr may be disposed on the substrate 110.

[0070] The semiconductor layer 122 may be formed on the buffer layer 120. The semiconductor layer 122 may include an oxide semiconductor material or polysilicon.

[0071] When the semiconductor layer 122 includes an oxide semiconductor material, a light shielding pattern (not shown) may be formed under the semiconductor layer 122. Light emitted to the semiconductor layer 122 may be shielded or blocked by the light shielding pattern, thereby preventing or reducing thermal degradation of the semiconductor layer 122. On the other hand, when the semiconductor layer 122 includes polysilicon, impurities may be doped on both sides of the semiconductor layer 122.

[0072] The gate insulating layer 124 may be formed on the semiconductor layer 122. The gate insulating layer 124 may be formed of an inorganic insulating material such as silicon oxide or silicon nitride.

[0073] The gate 130 may be formed of a conductive material such as metal, and may be formed on the gate insulating layer 124 to correspond to the center of the semiconductor layer 122 .

[0074] exist Figure 2 In the embodiment, the gate insulating layer 124 may be formed on the entire surface of the substrate 110. Alternatively, the gate insulating layer 124 may have a pattern having the same shape as the gate electrode 130. However, embodiments of the present invention are not limited to these examples.

[0075] The interlayer insulating layer 132 may be formed of an insulating material, and may be formed on the gate electrode 130. The interlayer insulating layer 132 may be formed of an inorganic insulating material such as silicon oxide or silicon nitride, or an organic insulating material such as benzocyclobutene or a photosensitive acrylic resin.

[0076] The interlayer insulating layer 132 may include first and second contact holes 134 and 136 exposing both sides of the semiconductor layer 122. The first and second contact holes 134 and 136 may not cover portions of the surface of the semiconductor layer 122 closer to both ends than to the center of the semiconductor layer 122. The first and second contact holes 134 and 136 may be located at both sides of the gate 130 to be spaced apart from the gate 130.

[0077] The first and second contact holes 134 and 136 may be formed through the interlayer insulating layer 132 and the gate insulating layer 124. Alternatively, when the gate insulating layer 124 has a pattern of the same shape as the gate 130, the first and second contact holes 134 and 136 may be formed only through the interlayer insulating layer 132. However, embodiments of the present invention are not limited to these examples.

[0078] The source electrode 140 and the drain electrode 142 may be formed of a conductive material such as metal, and may be formed on the interlayer insulating layer 132 .

[0079] The source electrode 140 and the drain electrode 142 may be spaced apart from each other with respect to the gate electrode 130 , and may contact both sides of the semiconductor layer 122 through the first and second contact holes 134 and 136 , respectively.

[0080] The semiconductor layer 122, the gate electrode 130, the source electrode 140, and the drain electrode 142 may constitute a TFT Tr. The TFT Tr may serve as a driving element. For example, the TFT Tr may be connected to ( Figure 1 The driving TFT Td corresponds to the driving TFT Td.

[0081] In the TFT Tr, a gate electrode 130, a source electrode 140, and a drain electrode 142 may be located on the semiconductor layer 122. For example, the TFT Tr may have a coplanar type structure.

[0082] Alternatively, in the TFT Tr, the gate electrode may be located below the semiconductor layer, and the source electrode and the drain electrode may be located on the semiconductor layer, so that the TFT Tr may have an inverted staggered structure. In this case, the semiconductor layer may include amorphous silicon. However, the embodiments of the present invention are not limited to these examples.

[0083] Although not shown, the gate lines and the data lines may cross each other to define a pixel region, and the switching TFT may be connected to the gate lines and the data lines. The switching TFT may be connected to the TFT Tr as a driving element.

[0084] In addition, a power supply line which may be parallel to and spaced apart from one of the gate line and the data line, and a storage capacitor for maintaining a voltage of the gate electrode of the TFT Tr in one frame may also be formed.

[0085] The planarization layer (or passivation layer) 150 may include a drain contact hole 152 exposing the drain electrode 142 of the TFT Tr, and may cover the TFT Tr. The drain contact hole 152 may not cover the drain electrode 142 .

[0086] The first electrode 160 may be connected to the drain electrode 142 of the TFT Tr through the drain contact hole 152 , and may be separately formed in each pixel region and on the planarization layer 150 .

[0087] The first electrode 160 may be an anode and may include a transparent conductive oxide material layer formed of a conductive material such as a transparent conductive oxide (TCO) having a relatively high work function. For example, the transparent conductive oxide material layer of the first electrode 160 may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), tin oxide (SnO), zinc oxide (ZnO), indium copper oxide (ICO), and Al:ZnO (AZO).

[0088] When the organic light emitting display device 100 operates as a bottom emission type, the first electrode 160 may have a single-layer structure of a transparent conductive oxide material layer.

[0089] Alternatively, when the organic light-emitting display device 100 operates as a top emission type, the first electrode 160 may further include a reflective layer and have a double-layer structure or a triple-layer structure. For example, the reflective layer may be formed of silver (Ag) or an aluminum palladium copper (APC) alloy. In the top emission type organic light-emitting display device 100, the first electrode 160 may have a double-layer structure of Ag / ITO or APC / ITO, or a triple-layer structure of ITO / Ag / ITO or ITO / APC / ITO. However, embodiments of the present invention are not limited to these examples.

[0090] The bank layer 166 may be formed on the planarization layer 150 to cover the edge of the first electrode 160. For example, the bank layer 166 may be located at a boundary of the pixel region and may expose the center of the first electrode 160 in the pixel region.

[0091] The organic light emitting layer 162 may be formed on the first electrode 160. The organic light emitting layer 162 may include a light emitting component including a light emitting material layer (EML). Alternatively, the organic light emitting layer 162 may include a plurality of light emitting components, and each light emitting component may include an EML. In addition, the organic light emitting layer 162 may further include a charge generation layer between adjacent light emitting components. Embodiments of the present invention are not limited to these examples.

[0092] The or each light emitting component may have a multilayer structure including at least one of a hole injection layer (HIL), a hole transfer layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transport layer (ETL) and an electron injection layer (EIL).

[0093] The organic light emitting layer 162 may be divided into red, green, and blue pixel regions. As described herein, in the OLED D in the green pixel region according to an exemplary embodiment of the present invention, the organic light emitting layer 162 may include an example of the organic compound of the present invention. As a result, in the OLED D and the organic light emitting display device 100 including the organic compound, the driving voltage may be reduced, and the light emitting efficiency and lifespan may be improved. For example, the EML of the organic light emitting layer 162 may include the organic compound of the present invention.

[0094] The second electrode 164 may be formed over the substrate 110 on which the organic light emitting layer 162 is formed. The second electrode 164 may cover the entire surface of the display area and may be formed of a conductive material having a relatively low work function to act as a cathode. For example, the second electrode 164 may be formed of aluminum (Al), magnesium (Mg), calcium (Ca), silver (Ag), or an alloy thereof, or a combination thereof. In the top emission type organic light emitting display device 100, the second electrode 164 may have a thin profile (small thickness) to provide light transmittance (or semi-light transmittance).

[0095] The first electrode 160 , the organic light emitting layer 162 , and the second electrode 164 may constitute an OLED D.

[0096] An encapsulation layer (eg, an encapsulation film) 170 may be formed on the second electrode 164 to prevent moisture from penetrating into the OLED D. The encapsulation layer 170 may include a first inorganic insulating layer 172, an organic insulating layer 174, and a second inorganic insulating layer 176 stacked in sequence. However, embodiments of the present invention are not limited to these examples. The encapsulation layer 170 may be omitted.

[0097] In the bottom emission type organic light emitting display device 100 , a metal plate may be further disposed on the encapsulation layer 170 .

[0098] The organic light-emitting display device 100 may further include a color filter layer corresponding to the red, green, and blue pixel regions. The color filter layer may include red, green, and blue color filter patterns corresponding to the red, green, and blue pixel regions, respectively. When the organic light-emitting display device 100 includes the color filter layer, the color purity of the organic light-emitting display device 100 may be improved.

[0099] In the bottom emission type organic light emitting display device 100, the color filter layer may be located between the OLED D and the substrate 110, for example, between the interlayer insulating layer 132 and the planarization layer 150. Alternatively, in the top emission type organic light emitting display device 100, the color filter layer may be located above the OLED D, for example, above the second electrode 164 or the encapsulation layer 170.

[0100] The organic light-emitting display device 100 may further include a polarizing plate (not shown) for reducing ambient light reflection. For example, the polarizing plate may be a circular polarizing plate. In a bottom-emission organic light-emitting display device 100, the polarizing plate may be disposed below the substrate 110. In a top-emission organic light-emitting display device 100, the polarizing plate may be disposed on or above the encapsulation layer 170.

[0101] In addition, in the top emission type organic light emitting display device 100, a cover window (not shown) may be attached to the encapsulation layer 170 or the polarizing plate. In this case, the substrate 110 and the cover window may have flexibility, so that a flexible organic light emitting display device may be provided.

[0102] In addition, the organic light emitting display device 100 may further include a touch layer or a touch panel. The touch layer or the touch panel may be disposed above the OLED D, for example, between the OLED and the cover window, or disposed below the substrate 100.

[0103] Figure 3 A schematic cross-sectional view showing an OLED according to a second embodiment of the present invention.

[0104] like Figure 3 As shown, the OLED D may include first and second electrodes 160 and 164 facing each other, and an organic light emitting layer 162 therebetween. The organic light emitting layer 162 may include an EML 230 between the first and second electrodes 160 and 164. The EML 230 may be a green EML or a yellow-green EML.

[0105] ( Figure 2 The organic light emitting display device 100 may include at least one of a red pixel region, a green pixel region, a blue pixel region, and a yellow-green pixel region. The OLED D may be located in at least one of the green pixel region and the yellow-green pixel region. The OLED D in the red pixel region may include a red EML, and the OLED D in the blue pixel region may include a blue EML.

[0106] The first electrode 160 may be an anode that injects holes, and the second electrode 164 may be a cathode that injects electrons. In addition, one of the first and second electrodes 160 and 164 may be a reflective electrode, and the other of the first and second electrodes 160 and 164 may be a transparent (or semi-transparent) electrode.

[0107] For example, the first electrode 160 may include a transparent conductive material layer formed of ITO or IZO. The second electrode 164 may be formed of one of Al, Mg, Ag, AlMg, and MgAg.

[0108] The EML 230 may include the organic compound of the present invention as a first compound 232. The first compound 232 may be represented by Formula 1.

[0109] [Formula 1]

[0110]

[0111] In Formula 1, a1 is an integer from 0 to 5, a2 is an integer from 0 to 3,

[0112] R1 is each independently selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group,

[0113] R2 is each independently selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group,

[0114] When a1 is 2 or more, the two or more R1 groups are the same or different.

[0115] When a2 is 2 or more, the two or more R2 groups are the same or different.

[0116] L1, L2 and L3 are each independently selected from the group consisting of a single bond (e.g., direct bond), a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, Ar1 is selected from Formula 1a-1 to Formula 1a-5,

[0117] [Formula 1a-1]

[0118]

[0119] [Formula 1a-2]

[0120]

[0121] [Formula 1a-3]

[0122]

[0123] [Formula 1a-4]

[0124]

[0125] [Formula 1a-5]

[0126]

[0127] In formula 1a-1, b1 is an integer from 0 to 5,

[0128] In formula 1a-2, b2 is an integer from 0 to 7,

[0129] In each of formulae 1a-3 to 1a-5, b3 is each independently an integer from 0 to 4,

[0130] When b1, b2 and b3 are each 2 or more, the two or more R3 groups are the same or different.

[0131] In formula 1a-4, V1 is selected from O, S and C(R3)2,

[0132] In formula 1a-5, V1 is selected from O and S,

[0133] In each of Formulae 1a-1 to 1a-5, R3 is each independently selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group,

[0134] Ar2 is selected from Formula 1b-1 and Formula 1b-2,

[0135] [Formula 1b-1]

[0136]

[0137] [Formula 1b-2]

[0138]

[0139] In each of Formulae 1b-1 and 1b-2, b4 is an integer from 0 to 4,

[0140] R4 is each independently selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group,

[0141] When b4 is 2 or more, the two or more R4 groups are the same or different, and

[0142] In Formula 1b-2, R5 is selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, and a substituted or unsubstituted C6 to C60 aryl group.

[0143] In each of Formulae 1a-1 to 1a-5, 1b-1, and 1b-2, the mark “*” represents a bonding site.

[0144] It should be understood that the R group represents substituents permitted by valence. When the group represents no substitution, hydrogen atoms are present as required to satisfy the valence requirements of the compound.

[0145] In the present invention, unless specifically defined, the substituents of the alkyl group, cycloalkyl group, alkoxy group, aryl group, heteroaryl group, arylene group and heteroarylene group may be selected from the group consisting of deuterium (D), halogen, cyano group, hydroxyl group, C1 to C10 alkyl group, C1 to C10 alkoxy group, C3 to C30 cycloalkyl group, C1 to C10 alkylsilyl group, C1 to C10 alkylamine group, C6 to C30 arylsilyl group, C6 to C30 arylamine group, C6 to C30 aryl group and C3 to C30 heteroaryl group. For example, the substituent can be at least one selected from the group consisting of D, F, Br, CN, hydroxyl, methyl, ethyl, propyl, butyl (e.g., tert-butyl), methoxy, ethoxy, propoxy, butoxy (e.g., tert-butoxy), cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, trimethylsilyl, trimethylamino, triphenylsilyl, triphenylamino, phenyl, biphenyl, naphthyl, anthracenyl, pyridyl, carbazolyl, dibenzofuranyl, and dibenzothiophenyl.

[0146] In the present invention, in the absence of specific definition, the term "alkyl" means a saturated, linear or branched hydrocarbon chain group with or without a substituent. For example, the C1 to C10 alkyl group can be selected from the group consisting of methyl, ethyl, propyl and butyl (e.g., tert-butyl).

[0147] In the present invention, in the absence of specific definition, the term "aryl" refers to a monovalent monocyclic or polycyclic conjugated ring structure. For example, C6 to C60 aryl can be selected from phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, pentalenyl, indenyl, indenoindenyl, heptalenyl, biphenylene, dicyclopentadienylphenyl, phenalenyl, benzalenyl, dibenzonalenyl, azulene, pyrenyl, fluoranthenyl, triphenylene, The group consisting of phenyl, tetraphenyl, naphthacene, dinaphthophenyl, pentaphenyl, pentacene, fluorenyl, indenofluorenyl and spirofluorenyl.

[0148] In the present invention, in the absence of a specific definition, the term "arylene" refers to a divalent monocyclic or polycyclic conjugated ring structure. For example, the C6 to C60 arylene group can be selected from phenylene, biphenylene, terphenylene, naphthylene, anthracene, pentalene, indenylene, indenylene, heptalene, biphenylene, dicyclopentadienylphenylene, phenalenylene, phenyl and nonalenylene, diphenyl and nonalenylene, azulene, pyrenylene, fluoranthenylene, triphenylene, pyrenylene, fluoranthenylene, pyren ... The present invention also includes the group consisting of phenylene, tetraphenylene, tetraphenylene, dinaphthophenylene, pentphenylene, pentanaphthophenylene, fluorenylene, indenofluorenylene and spirofluorenyl.

[0149] In the present invention, in the absence of specific definition, the term "heteroaryl" refers to a 5- to 7-membered aromatic ring containing 1, 2, 3 or 4 heteroatoms such as nitrogen, oxygen or sulfur and these rings are fused to an aryl, cycloalkyl, heteroaryl or heterocycloalkyl ring. For example, a C3 to C60 heteroaryl group can be selected from pyrrolyl, pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, triazinyl, tetrazinyl, imidazolyl, pyrazolyl, indolyl, isoindolyl, indazolyl, indolizinyl, pyrrolizinyl, carbazolyl, benzocarbazolyl, dibenzocarbazolyl, indolecarbazolyl, indenocarbazolyl, benzofuranocarbazolyl, benzothiophenocarbazolyl, quinolyl, isoquinolyl, phthalolyl, quinoxalinyl, cinnolinyl, quinazolinyl, quinazolinyl, purinyl, benzoquinolyl, benzoisoquinolyl, benzoquinazolinyl, benzoquinol ... The group consisting of oxalinyl, acridinyl, phenanthrolinyl, benzothiophene, phenanthridinyl, pteridinyl, cinnolinyl, naphthylamino, furanyl, oxazinyl, oxazolyl, oxadiazolyl, triazolyl, dioxinyl, benzofuranyl, dibenzofuranyl, thiopyranyl, xanthyl, chromenyl, isochromenyl, thiazinyl, thienyl, benzothienyl, dibenzothienyl, difuropyrazinyl, benzofuranodibenzofuranyl, benzothienobenzothienyl, benzothienodibenzothienyl, benzothienobenzofuranyl and benzothienodibenzofuranyl.

[0150] In the present invention, in the absence of specific definition, the term "heteroaryl" refers to the divalent counterpart of the heteroaryl defined above. For example, C3 to C60 heteroaryl can be selected from pyrrolyl, pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, triazinyl, tetrazinyl, imidazolyl, pyrazolyl, indolyl, isoindolyl, indazolyl, indolizinyl, pyrrolazinyl, carbazolyl, benzocarbazolyl, dibenzocarbazolyl, indolecarbazolyl, indenylcarbazolyl, benzofuranocarbazolyl, benzothiophenocarbazolyl, quinolyl, isoquinolyl, phthalolyl, quinoxalinyl, cinnolinyl, quinazolinyl, quinazolinyl, purinyl, benzoquinolyl, benzoisoquinolyl, benzoquinazolinyl, benzothiophenocarbazolyl, quinolyl ... The group consisting of benzoquinoxalinyl, acridinylene, phenanthrolinylene, benzophenidylene, phenanthridylene, pterygylene, cinnolinylene, naphthylene, furanylene, oxazinylene, oxazolylene, oxadiazolylene, triazolylene, dioxinylene, benzofuranylene, dibenzofuranylene, thiopyranylene, xanthenylene, chromenylene, isochromenylene, thiazinylene, thienylene, benzothienylene, dibenzothienylene, difuropyrazinylene, benzofuranodibenzofuranylene, benzothienobenzothienylene, benzothienodibenzothienylene, benzothienobenzofuranylene and benzothienodibenzofuranylene.

[0151] In one aspect of the present invention, R1 may be a C6 to C60 aryl group (eg, phenyl) having no substituent or substituted with a C1 to C10 alkyl group (eg, methyl).

[0152] In one aspect of the present invention, a1 may be zero.

[0153] In one aspect of the present invention, L1, L2 and L3 may each independently be a C6 to C60 arylene group, such as a phenylene group.

[0154] In one aspect of the present invention, b1 to b3 may each independently be an integer from 0 to 2.

[0155] In one aspect of the present invention, R3 may each be a substituted or unsubstituted C1 to C10 alkyl group (eg, methyl or tert-butyl) or a substituted or unsubstituted C6 to C60 aryl group (eg, phenyl).

[0156] In one aspect of the invention, b4 can be 0 or 1.

[0157] In one aspect of the present invention, R4 and R5 may each independently be a substituted or unsubstituted C6 to C60 aryl group, such as a phenyl group.

[0158] As shown in Formula 1, the organic compound of the present invention has the following structure: the first part of benzoxazole, the second part of carbazole and the third part selected from Formulas 1a-1 to 1a-5 are directly connected to the triazine mother core or connected (connected, bonded or coupled) through a linker. That is, the organic compound of the present invention includes a triazine mother core, a first part of benzoxazole, a second part of carbazole and a third part different from the first and second parts. As a result, the OLED D and the organic light-emitting display device 100 using the organic compound have the advantage of improving at least one of the driving voltage, luminous efficiency and lifespan.

[0159] In Formula 1, the position at which L3 is attached to the benzoxazole moiety is specified. For example, the organic compound of the present invention can be represented by one of Formulas 1-1 to 1-4.

[0160] [Formula 1-1]

[0161]

[0162] [Formula 1-2]

[0163]

[0164] [Formula 1-3]

[0165]

[0166] [Formula 1-4]

[0167]

[0168] In each of Formulae 1-1 to 1-4, a1, a2, R1, R2, L1, L2, L3, Ar1, and Ar2 may be defined the same as in Formula 1.

[0169] In one aspect of the present invention, Ar2 may be represented by Formula 1b-1, L2 may be a phenylene group, and the connection position of Ar2 may be specified. For example, the organic compound may be represented by Formula 1-5.

[0170] [Formula 1-5]

[0171]

[0172] In Formula 1-5, a1, a2, R1, R2, L1, L3 and Ar1 are defined the same as in Formula 1, and R4 and b4 are defined the same as in Formula 1b-1.

[0173] In one aspect of the present invention, Ar2 may be represented by Formula 1b-2, and L2 may be a single bond. For example, the organic compound may be represented by Formula 1-6.

[0174] [Formula 1-6]

[0175]

[0176] In Formula 1-5, a1, a2, R1, R2, L1, L3 and Ar1 are defined the same as in Formula 1, and R4, R5 and b4 are defined the same as in Formula 1b-1.

[0177] The first compound 232 of the organic compound of the present invention may be one of the compounds in Formula 2.

[0178] [Formula 2]

[0179]

[0180]

[0181]

[0182]

[0183]

[0184]

[0185]

[0186]

[0187]

[0188]

[0189]

[0190]

[0191]

[0192]

[0193]

[0194]

[0195]

[0196]

[0197]

[0198]

[0199]

[0200] [synthesis]

[0201] 1. Synthesis of Compound A1 (1) Compound A [Reaction Formula 1-1]

[0202]

[0203] In a single-necked round-bottom flask, 2,4,6-trichloro-1,3,5-triazine (10 g, 0.054 mol) was dissolved in 100 ml of THF and cooled to -78 ° C under nitrogen. 2.5 M n-BuLi solution (19 ml, 0.048 mol) was slowly added, and carbazole (8.1 g, 0.048 mol) was further added after 30 minutes. After the temperature was raised to room temperature, the mixture was reacted for 3 hours. After the reaction was completed, the mixture was completely precipitated using methanol, filtered, and then dissolved in dichloromethane (MC) again. The mixture was passed through a column with hexane and dichloromethane (MC), and the resulting material was concentrated. Impurities were removed and filtered using acetone slurry to obtain compound A (12.7 g, 83%).

[0204] (2) Compound C-1

[0205] [Reaction 1-2]

[0206]

[0207] In a single-necked round-bottom flask, 7-bromo-2-phenyl-1,3-benzothiazole (20 g, 0.072 mol), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (Pd(dppf)Cl2, 2.6 g, 0.0004 mol), potassium acetate (14.3 g, 0.14 mol) and bis(pentanoyl)diboron (B2(pin)2, 27.7 g, 0.11 mol) were dissolved in 250 ml of 1,4-dioxane and refluxed for 3 hours. After the reaction solution was fully cooled to room temperature, the mixture was filtered. The mixture was washed with MC and concentrated. The concentrated material was dissolved in MC and then filtered using MC and silica. After the filtered solution was concentrated, impurities were removed using MeOH slurry and filtered to obtain compound C-1 (21 g, 90%).

[0208] (3) Compound A1-i

[0209] [Reaction 1-3]

[0210]

[0211] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), phenylboronic acid (3.5 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, an excess of methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB (1,2-dichlorobenzene), and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A1-i (6.2 g, 54%).

[0212] (4) Compound A1

[0213] [Reaction 1-4]

[0214]

[0215] In a single-necked round-bottom flask, compound A1-i (6.2 g, 0.017 mol), compound C-1 (6.04 g, 0.018 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1 g, 0.0009 mol) and K2CO3 (4.7 g, 0.034 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110°C under reflux for 4 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A1 (9.2 g, 80.6%).

[0216] 2. Synthesis of Compound A5

[0217] (1) Compound A5-i

[0218] [Reaction formula 2-1]

[0219]

[0220] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), [1,1'-biphenyl]-4-ylboronic acid (5.6 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A5-i (8.1 g, 59%).

[0221] (2) Compound A5

[0222] [Reaction formula 2-2]

[0223]

[0224] In a single-necked round-bottom flask, compound A5-i (8.1 g, 0.019 mol), compound C-1 (6.6 g, 0.021 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.1 g, 0.0010 mol) and K2CO3 (5.17 g, 0.037 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110°C under reflux for 4 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A5 (8.5 g, 76.8%).

[0225] 3. Synthesis of Compound A6

[0226] (1) Compound A6-i

[0227] [Reaction formula 3-1]

[0228]

[0229] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), triphenylene-2-ylboronic acid (7.7 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, an excess of methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB (1,2-dichlorobenzene), and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A6-i (9.2 g, 57%).

[0230] (2) Compound A6

[0231] [Reaction formula 3-2]

[0232]

[0233] In a single-necked round-bottom flask, compound A6-i (9.2 g, 0.018 mol), compound C-1 (6.4 g, 0.020 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.0 g, 0.0009 mol) and K2CO3 (5.00 g, 0.036 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110°C under reflux for 2 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A6 (10.2 g, 83.8%).

[0234] 4. Synthesis of Compound A7

[0235] (1) Compound A7-i

[0236] [Reaction 4-1]

[0237]

[0238] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), (9,9-dimethyl-9H-fluorene-2-yl)boric acid (6.8 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A7-i (8.9 g, 59%).

[0239] (2) Compound A7

[0240] [Reaction 4-2]

[0241]

[0242] In a single-necked round-bottom flask, compound A7-i (8.9 g, 0.019 mol), compound C-1 (6.6 g, 0.021 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.1 g, 0.0010 mol) and K2CO3 (5.17 g, 0.037 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C. for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A7 (7.5 g, 63.1%).

[0243] 5. Synthesis of Compound A8

[0244] (1) Compound A8-i

[0245] [Reaction formula 5-1]

[0246]

[0247] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), (9,9-diphenyl-fluorene-2-yl)boric acid (10.3 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A8-i (12.7 g, 67%).

[0248] (2) Compound A8

[0249] [Reaction 5-2]

[0250]

[0251] In a single-necked round-bottom flask, compound A8-i (12.7 g, 0.021 mol), compound C-1 (7.5 g, 0.023 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.2 g, 0.0011 mol) and K2CO3 (5.9 g, 0.043 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C. for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A8 (13.0 g, 81.0%).

[0252] 6. Synthesis of Compound A9

[0253] (1) Compound A9-i

[0254] [Reaction formula 6-1]

[0255]

[0256] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10.1 g, 0.032 mol), naphthalene-2-ylboronic acid (5.0 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.76 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A9-i (7.8 g, 66%).

[0257] (2) Compound A9

[0258] [Reaction formula 6-2]

[0259]

[0260] In a single-necked round-bottom flask, compound A9-i (7.8 g, 0.021 mol), compound C-1 (7.5 g, 0.023 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.2 g, 0.0011 mol) and K2CO3 (6.0 g, 0.044 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110°C under reflux for 4 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A9 (9.7 g, 81.0%).

[0261] 7. Synthesis of Compound A19

[0262] (1) Compound A19-i

[0263] [Reaction formula 7-1]

[0264]

[0265] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), dibenzofuran-4-ylboronic acid (6.0 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A19-i (8.5 g, 60%).

[0266] (2) Compound A19

[0267] [Reaction 7-2]

[0268]

[0269] In a single-necked round-bottom flask, compound A19-i (8.5 g, 0.019 mol), compound C-1 (6.7 g, 0.021 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.1 g, 0.0010 mol) and K2CO3 (5.26 g, 0.038 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110°C under reflux for 4 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A19 (8.8 g, 76.4%).

[0270] 8. Synthesis of Compound A29

[0271] (1) Compound C-2

[0272] [Reaction formula 8-1]

[0273]

[0274] In a single-necked round-bottom flask, 7-bromo-2-phenyl-1,3-benzothiazole (20 g, 0.072 mol), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (Pd(dppf)Cl2, 2.6 g, 0.0004 mol), potassium acetate (14.3 g, 0.14 mol) and bis(pentanoyl)diboron (B2(pin)2, 27.7 g, 0.11 mol) were dissolved in 250 ml of 1,4-dioxane and refluxed for 3 hours. After the reaction solution was fully cooled to room temperature, the mixture was filtered. The mixture was washed with MC and concentrated. The concentrated material was dissolved in MC and then filtered using MC and silica. After the filtered solution was concentrated, impurities were removed using MeOH slurry and filtered to obtain compound C-2 (21 g, 90%).

[0275] (2) Compound A29-i

[0276] [Reaction formula 8-2]

[0277]

[0278] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), [1,1'-biphenyl]-3-ylboronic acid (5.6 g, 0.029 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0018 mol) and K2CO3 (8.77 g, 0.063 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A29-i (8.1 g, 65%).

[0279] (3) Compound A29

[0280] [Reaction 8-3]

[0281]

[0282] In a single-necked round-bottom flask, compound A29-i (8.1 g, 0.019 mol), compound C-2 (6.29 g, 0.018 mol), palladium-tetrakis (triphenylphosphine) (Pd (PPh 3) 4, 1 g, 0.0009 mol) and K 2 CO 3 (4.7 g, 0.034 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C. for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A29 (8.6 g, 80.6%).

[0283] 9. Synthesis of Compound A30

[0284] [Reaction formula 9]

[0285]

[0286] In a single-necked round-bottom flask, compound A6-i (8.6 g, 0.017 mol), compound C-2 (6.29 g, 0.018 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1 g, 0.0009 mol) and K2CO3 (4.7 g, 0.034 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A30 (8.9 g, 79.0%).

[0287] 10. Synthesis of Compound A105

[0288] (1) Compound C-3

[0289] [Reaction formula 10-1]

[0290]

[0291] In a single-necked round-bottom flask, 6-bromo-2-phenyl-1,3-benzoxazole (20 g, 0.072 mol), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (Pd(dppf)Cl2, 2.6 g, 0.0004 mol), potassium acetate (14.3 g, 0.14 mol) and bis(pentanoyl)diboron (B2(pin)2, 27.7 g, 0.11 mol) were dissolved in 250 ml of 1,4-dioxane and refluxed for 3 hours. After the reaction solution was fully cooled to room temperature, the mixture was filtered. The mixture was washed with MC and concentrated. The concentrated material was dissolved in MC and then filtered using MC and silica. After the filtered solution was concentrated, impurities were removed using MeOH slurry and filtered to obtain compound C-3 (22 g, 94%).

[0292] (2) Compound A105

[0293] [Reaction formula 10-2]

[0294]

[0295] In a single-necked round-bottom flask, compound A1-i (10.0 g, 0.028 mol), compound C-3 (9.9 g, 0.031 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.6 g, 0.0014 mol) and K2CO3 (7.8 g, 0.056 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A105 (11.1 g, 76.8%).

[0296] 11. Synthesis of Compound A115

[0297] (1) Compound C-4

[0298] [Reaction formula 11-1]

[0299]

[0300] In a single-necked round-bottom flask, 5-bromo-2-phenyl-1,3-benzoxazole (20 g, 0.072 mol), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (Pd(dppf)Cl2, 2.6 g, 0.0004 mol), potassium acetate (14.3 g, 0.14 mol) and bis(pentanoyl)diboron (B2(pin)2, 27.7 g, 0.11 mol) were dissolved in 250 ml of 1,4-dioxane and refluxed for 3 hours. After the reaction solution was fully cooled to room temperature, the mixture was filtered. The mixture was washed with MC and concentrated. The concentrated material was dissolved in MC and then filtered using MC and silica. After the filtered solution was concentrated, impurities were removed using MeOH slurry and filtered to obtain compound C-4 (22.2 g, 95%).

[0301] (2) Compound A115

[0302] [Reaction formula 11-2]

[0303]

[0304] In a single-necked round-bottom flask, compound A5-i (8.7 g, 0.019 mol), compound C-4 (7.45 g, 0.023 mol), palladium-tetrakis (triphenylphosphine) (Pd (PPh 3) 4, 1.0 g, 0.0010 mol) and K 2 CO 3 (5.3 g, 0.038 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C for 2 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A115 (9.2 g, 72.6%).

[0305] 12. Synthesis of Compound A128

[0306] (1) Compound C-5

[0307] [Reaction formula 12-1]

[0308]

[0309] In a single-necked round-bottom flask, 6-bromo-2-phenyl-1,3-benzoxazole (20 g, 0.072 mol), bis(diphenylphosphino)ferrocene]dichloropalladium(II) (Pd(dppf)Cl2, 2.6 g, 0.0004 mol), potassium acetate (14.3 g, 0.14 mol) and diboron bis(pentanoyl) (B2(pin)2, 27.7 g, 0.11 mol) were dissolved in 250 ml of 1,4-dioxane and refluxed for 3 hours. After the reaction solution was fully cooled to room temperature, the mixture was filtered. The mixture was washed with MC and concentrated. The concentrated material was dissolved in MC and then filtered using MC and silica. After the filtered solution was concentrated, impurities were removed using MeOH slurry and filtered to obtain compound C-5 (21 g, 92%).

[0310] (2) Compound A128

[0311] [Reaction 12-2]

[0312]

[0313] In a single-necked round-bottom flask, compound A5-i (8.7 g, 0.019 mol), compound C-5 (7.45 g, 0.023 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.0 g, 0.0010 mol) and K2CO3 (5.3 g, 0.038 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C. for 5 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A128 (9.2 g, 72.6%).

[0314] 13. Synthesis of Compound A132

[0315] (1) Compound 132-i

[0316] [Reaction formula 13-1]

[0317]

[0318] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.032 mol), dibenzofuran-3-ylboronic acid (5.4 g, 0.025 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.8 g, 0.0016 mol) and K2CO3 (8.8 g, 0.064 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB, and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A132-i (9.9 g, 70%).

[0319] (2) Compound A132

[0320] [Reaction 13-2]

[0321]

[0322] In a single-necked round-bottom flask, compound A132-i (9.9 g, 0.022 mol), compound C-5 (0.8 g, 0.024 mol), palladium-tetrakis (triphenylphosphine) (Pd (PPh 3) 4, 1.3 g, 0.0011 mol) and K 2 CO 3 (6.1 g, 0.044 mol)) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL) and reacted at 110 ° C for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A132 (9.2 g, 83.1%).

[0323] 14. Synthesis of Compound A83

[0324] (1) Compound Di

[0325] [Reaction formula 14-1]

[0326]

[0327] In a single-necked round-bottom flask, 1-bromocarbazole (25 g, 0.1 mol), phenylboronic acid (19 g, 0.153 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 5.9 g, 0.0050 mol) and K2CO3 (28.1 g, 0.044 mol) were dissolved in a mixture of tetrahydrofuran (300 mL) and water (1000 mL) and refluxed at 110°C for 12 hours. The precipitated material was filtered and washed with water and methanol. The filtered material was completely dissolved with MC and filtered using silica gel. The resulting solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound Di (21.4 g, 86.6%).

[0328] (2) Compound D

[0329] [Reaction 14-2]

[0330]

[0331] In a single-necked round-bottom flask, 2,4,6-trichloro-1,3,5-triazine (20 g, 0.11 mol) was dissolved in 200 ml of THF and cooled to -78 ° C under nitrogen. 2.5 M n-BuLi solution (38 ml, 0.096 mol) was slowly added, and 1-phenylcarbazole (21.4 g, 0.096 mol) was further added after 30 minutes. After the temperature was raised to room temperature, the mixture was reacted for 3 hours. After the reaction was completed, the mixture was completely precipitated using methanol, filtered, and then dissolved in dichloromethane (MC) again. The mixture was passed through a column with hexane and dichloromethane (MC), and the resulting material was concentrated. Impurities were removed and filtered using acetone slurry to obtain compound D (17.9 g, 54%).

[0332] (3) Compound A83-i

[0333] [Reaction 14-3]

[0334]

[0335] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)-4-phenyl-carbazole (10 g, 0.026 mol), dibenzofuran-3-ylboronic acid (4.8 g, 0.022 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.5 g, 0.0013 mol) and K2CO3 (7.1 g, 0.051 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 2 hours. After the reaction solution was cooled to room temperature, an excess of methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB (1,2-dichlorobenzene), and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A83-i (9.9 g, 70%).

[0336] (4) Compound A83

[0337] [Reaction 14-4]

[0338]

[0339] In a single-necked round-bottom flask, compound A83-i (10.0 g, 0.017 mol), compound C-1 (6.04 g, 0.018 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1 g, 0.0009 mol) and K2CO3 (4.7 g, 0.034 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL), and reacted at 110 ° C for 4 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A83 (10.8 g, 82.9%).

[0340] 15. Synthesis of Compound A102

[0341] (1) Compound A102-ii

[0342] [Reaction 15-1]

[0343]

[0344] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.026 mol), dibenzothiophene-3-ylboronic acid (4.4 g, 0.020 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.5 g, 0.0013 mol) and K2CO3 (7.07 g, 0.051 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 3 hours. After the reaction solution was cooled to room temperature, an excess of methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB (1,2-dichlorobenzene), and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A102-ii (8.8 g, 64%).

[0345] (2) Compound 102-i

[0346] [Reaction 15-2]

[0347]

[0348] In a single-necked round-bottom flask, compound A102-ii (8.8 g, 0.016 mol), 3-chlorophenylboronic acid (3.1 g, 0.020 mol), palladium-tetrakis (triphenylphosphine) (Pd (PPh 3 ) 4, 0.9 g, 0.0008 mol) and K2CO3 (4.5 g, 0.032 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 110° C. for 4 hours. The precipitated solid was filtered and washed with water and methanol. The filtered material was completely dissolved with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound 102-i (8.1 g, 80.7%).

[0349] (3) Compound 102

[0350] [Reaction 15-3]

[0351]

[0352] In a single-necked round-bottom flask, A102-i (8.1 g, 0.013 mol), compound C-1 (4.7 g, 0.015 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 0.8 g, 0.0007 mol) and K2CO3 (3.6 g, 0.026 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL) and reacted at 110°C under reflux for 8 hours. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A102 (8.5 g, 83.4%).

[0353] 16. Synthesis of Compound A141

[0354] (1) Compound A141-ii

[0355] [Reaction 16-1]

[0356]

[0357] In a single-necked round-bottom flask, 9-(4,6-dichloro-1,3,5-triazine-2-yl)carbazole (10 g, 0.026 mol), [1,1'-biphenyl]-4-ylboronic acid (3.96 g, 0.020 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 1.5 g, 0.0013 mol) and K2CO3 (7.07 g, 0.051 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 70°C for 3 hours. After the reaction solution was cooled to room temperature, excess methanol was added to completely precipitate the material, and then filtered. The precipitated material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The filtered solution was concentrated, impurities were removed using methanol slurry, and then filtered to obtain compound A141-ii (6.75 g, 67%).

[0358] (2) Compound 141-i

[0359] [Reaction 16-2]

[0360]

[0361] In a single-necked round-bottom flask, compound A141-ii (8.8 g, 0.016 mol), 3-chlorophenylboronic acid (2.5 g, 0.016 mol), palladium-tetrakis (triphenylphosphine) (Pd (PPh 3 ) 4, 0.9 g, 0.0008 mol) and K2CO3 (4.5 g, 0.032 mol) were dissolved in a mixture of tetrahydrofuran (100 mL) and water (20 mL) and refluxed at 110° C. for 4 hours. The precipitated solid was filtered and washed with water and methanol. The filtered material was completely dissolved with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound 141-i (6.2 g, 82.1%).

[0362] (3) Compound 141

[0363] [Reaction 16-3]

[0364]

[0365] In a single-necked round-bottom flask, A141-i (6.2 g, 0.0107 mol), compound C-5 (4.7 g, 0.015 mol), palladium-tetrakis(triphenylphosphine) (Pd(PPh3)4, 0.8 g, 0.0007 mol) and K2CO3 (3.6 g, 0.026 mol) were dissolved in a mixture of 1,4-dioxane (100 mL) and water (20 mL) and reacted at 110 ° C for 8 hours under reflux. After the reaction solution was fully cooled to room temperature, the precipitated solid was filtered and thoroughly washed with water and methanol. The filtered material was completely dissolved by heating with DCB and then filtered using chloroform and silica gel. The resulting solution was concentrated, impurities were removed using acetone slurry, and then filtered to obtain compound A141 (6.56 g, 82.9%).

[0366] The green EML 230 may further include a second compound 234 represented by Formula 3.

[0367] [Formula 3]

[0368]

[0369] In Formula 3, c1 and c4 are each independently an integer from 0 to 4, c2 and c3 are each independently an integer from 0 to 3,

[0370] R 11 , R 12 , R 13 and R 14each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl,

[0371] L 11 and L 12 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, and

[0372] Ar 11 and Ar 12 Each is independently selected from the group consisting of a substituted or unsubstituted C6 to C60 aryl group and a substituted or unsubstituted C3 to C60 heteroaryl group.

[0373] When c1 is 2 or more, 2 or more R 11 The groups are the same or different. When c2 is 2 or more, 2 or more R 12 The groups are the same or different. When c3 is 2 or more, 2 or more R 13 The groups are the same or different. When c4 is 2 or more, 2 or more R 14 The groups may be the same or different.

[0374] In formula 3, L 11 and L 12 can each be a single bond, and Ar 11 and Ar 12 Each may be independently selected from a phenyl group having a substituent or an unsubstituted phenyl group. For example, Formula 3 may be represented by Formula 3a.

[0375] [Formula 3a]

[0376]

[0377] In Formula 3a, R 11 , R 12 , R 13 , R 14 The definitions of c1, c2, c3 and c4 are the same as those in Formula 3.

[0378] Ar 13 and Ar 14 are each independently selected from a substituted or unsubstituted C6 to C30 aryl group, and

[0379] c5 and c6 are each independently an integer of 0 to 5.

[0380] For example, in Formula 3a, Ar 13 and Ar 14 c5 and c6 may each be 0 or 1 independently.

[0381] The second compound 234 may be one of the compounds in Formula 4.

[0382] [Formula 4]

[0383]

[0384]

[0385] In the green pixel region, the EML 230 may include one of the compounds in Formula 5 as the third compound 236 .

[0386] [Formula 5]

[0387]

[0388] In the yellow-green pixel region, the EML 230 may include one of the compounds in Formula 6 as the third compound 236 .

[0389] [Formula 6]

[0390]

[0391] In the EML 230, the first compound 232 may be an n-type host (eg, a first host), the second compound 234 may be a p-type host (eg, a second host), and the third compound 236 may be a light emitting body (eg, a dopant). The thickness of the EML 230 may be 50 to 1000 nm. For example, 200 to

[0392] In the EML 230, the weight % of each of the first compound 232 and the second compound 234 may be greater than the weight % of the third compound 236. The weight % of the first compound 232 and the weight % of the second compound 234 may be the same or different. In the green EML 230, the weight % of the first compound 232 and the second compound 234 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 232 and the weight % of the second compound 234 may be the same. For example, the first compound 232 and the second compound 234 may be present in the same weight %. Based on the total weight of the components in the green EML 230, the third compound 236 may be present in the green EML 230 in an amount of 5 to 25 weight %.

[0393] The organic light emitting layer 162 may further include an ETL 240 between the green EML 230 and the second electrode 164. For example, the ETL 240 may be in contact with the green EML 230. The thickness of the ETL 240 may be substantially the same as that of the green EML 230. For example, the thickness of the ETL 240 may be 50 to 1000 Å. For example, 200 to

[0394] The ETL 240 may include at least one of a compound represented by Formula 7 (eg, a first electron transport material), a compound represented by Formula 8 (eg, a second electron transport material), and a compound represented by Formula 9 (eg, a third electron transport material).

[0395] [Formula 7]

[0396]

[0397] In formula 7, L 21 is selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group,

[0398] Ar 21 Represented by Formula 7a or Formula 7b,

[0399] Ar 22 and Ar 23 each independently selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl,

[0400] [Formula 7a]

[0401]

[0402] [Formula 7b]

[0403]

[0404] In Formula 7a, d1 is an integer from 0 to 4,

[0405] R 21 is selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl, and substituted or unsubstituted C3 to C60 heteroaryl,

[0406] R 22 each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl,

[0407] In Formula 7b, d2 is an integer from 0 to 4,

[0408] R 23 is selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl, and substituted or unsubstituted C3 to C60 heteroaryl,

[0409] R 24 Each is independently selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group.

[0410] In each of Formulae 7a and b, the mark "*" indicates a bonding site.

[0411] In one aspect of the present invention, Ar 22 and Ar 23 Each may independently be a C6 to C60 aryl group (eg, phenyl or naphthyl) having no substituent or substituted with a C1 to C10 alkyl group (eg, tert-butyl).

[0412] [Formula 8]

[0413]

[0414] In Formula 8, e1, e2, e3 and e4 are each independently an integer from 0 to 4, and e5 is 0 or 1,

[0415] R 31 , R 32 , R 33 and R 34each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl,

[0416] X1, X2 and X3 are each independently N or CR 35 , wherein at least two of X1, X2 and X3 are N,

[0417] R 35 each independently selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl,

[0418] Ar 31 and Ar 32 are each independently selected from the group consisting of a substituted or unsubstituted C6 to C60 aryl group and a substituted or unsubstituted C3 to C60 heteroaryl group, and

[0419] L 31 Selected from the group consisting of a substituted or unsubstituted C6 to C60 arylene group and a substituted or unsubstituted C3 to C60 heteroarylene group.

[0420] In one aspect of the invention, e1, e2, e3 and e4 can each be 0 or 1.

[0421] In one aspect of the present invention, R 31 , R 32 , R 33 and R 34 Each may independently be a C6 to C60 aryl group which may have a substituent or may not have a substituent, for example, a phenyl group.

[0422] In one aspect of the present invention, two of X1, X2, and X3 may be N, and the other of X1, X2, and X3 may be CR 35 , and R 35 It may be hydrogen.

[0423] In one aspect of the present invention, Ar 31 and Ar 32 Each may independently be a substituted or unsubstituted C6 to C60 aryl group, such as a phenyl group or a biphenyl group.

[0424] In one aspect of the present invention, L 31 It may be a C6 to C60 arylene group which may have a substituent or an unsubstituent, for example, a phenylene group.

[0425] [Formula 9]

[0426]

[0427] In Formula 9, f1, f2 and f3 are each independently an integer from 0 to 4, and f4 is an integer from 0 to 3,

[0428] R 41 , R 42 , R 43 and R 44 each independently selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group,

[0429] X 11 O, S or NR 45 ,

[0430] X 45 is a C6 to C60 aryl group which may have a substituent or an unsubstituted group and forms a ring with an adjacent benzene ring,

[0431] X 12 , X 13 and X 14 Each independently is N or CR 46 , where X 12 , X 13 and X 14 At least two of them are N,

[0432] Ar 41 and Ar 42 , R 46 are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, and

[0433] L 41 Selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group.

[0434] In one aspect of the present invention, f1, f2, f3 and f4 can each independently be 0.

[0435] In one aspect of the present invention, R 45 It may be a phenyl group and form a carbazole with the nitrogen atom and the adjacent benzene ring.

[0436] In one aspect of the present invention, L 41 It may be a C6 to C60 arylene group which may have a substituent or an unsubstituted group, for example, a phenylene group.

[0437] In one aspect of the present invention, Ar 41 and Ar 42 Each is independently a substituted or unsubstituted C6 to C60 aryl group, for example, a phenyl group, a naphthyl group, or a naphthylphenyl group.

[0438] In one aspect of the present invention, R 46 It may be hydrogen.

[0439] The first electron transport material of Formula 7 used as the electron transport material 282 may be one of the compounds of Formula 10.

[0440] [Formula 10]

[0441]

[0442]

[0443] The second electron transport material of Formula 8 used as the electron transport material 282 may be one of the compounds in Formula 11.

[0444] [Formula 11]

[0445]

[0446] The third electron transport material of Formula 9 used as the electron transport material 282 may be one of the compounds in Formula 12.

[0447] [Formula 12]

[0448]

[0449]

[0450] The organic light emitting layer 162 may further include an HTL 220 between the first electrode 160 and the green EML 230. The thickness of the HTL 220 may be greater than the thickness of the green EML 230 and the ETL 240. For example, the thickness of the HTL may be 800 to 1000 μm. For example, 900 to

[0451] In addition, the organic light emitting layer 162 may further include at least one of the HIL 210 between the first electrode 160 and the HTL 220 and the EIL 250 between the second electrode 164 and the ETL 240 .

[0452] Although not shown, the organic light emitting layer 162 may further include at least one of an EBL between the HTL 220 and the green EML 230 and an HBL between the green EML 230 and the ETL 240 .

[0453] The HIL 210 may include at least one compound selected from the group consisting of: 4,4',4"-tris(3-methylphenylamino)triphenylamine (MTDATA), 4,4',4"-tris(N,N-diphenylamino)triphenylamine (NATA), 4,4',4"-tris(N-(naphthalene-1-yl)-N-phenylamino)triphenylamine (1T-NATA), 4,4',4"-tris(N-(naphthalene-2-yl)-N-phenylamino)triphenylamine (2T-NATA), copper phthalocyanine (CuPc), tris(4-carbazol-9-ylphenyl)amine (TCTA), N,N'-diphenyl-N,N'-bis(1-naphthyl)-1 , 1'-diphenyl-4,4"-diamine (NPB or NPD), 1,4,5,8,9,11-hexaazatriphenylene hexanitrile (dipyrazino[2,3-f:2'3'-h]quinoxaline-2,3,6,7,10,11-hexanitrile; HAT-CN), 1,3,5-tris[4-(diphenylamino)phenyl]benzene (TDAPB), poly(3,4-ethylenedioxythiophene)polystyrenesulfonic acid (PEDOT / PSS), and N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluorene-2-amine. The thickness of HIL 210 may be 10 to 200 nm. For example, 30 to

[0454] The HTL 220 may include at least one compound selected from the group consisting of N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-diphenyl-4,4'-diamine (TPD), NPB (or NPD), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), poly[N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)-benzidine] (poly-TPD), (poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4

[0063] In some embodiments, HTL 220 may include bis-[4-(N,N-di-p-tolylamino)-phenyl]cyclohexane (TAPC), 3,5-bis(9H-carbazole-9-yl)-N,N-diphenylaniline (DCDPA), N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazole-3-yl)phenyl)-9H-fluorene-2-amine, and N-(biphenyl-4-yl)-N-(4-(9-phenyl-9H-carbazole-3-yl)phenyl)biphenyl-4-amine. Alternatively, HTL 220 may include a compound of Formula 10. However, embodiments of the present invention are not limited to these examples.

[0455] The EIL 250 may include at least one of an alkali metal (eg, Li), an alkali metal halide (eg, LiF, CsF, NaF, or BaF2), and an organic metal compound (eg, Liq, lithium benzoate, or sodium stearate). The thickness of the EIL 250 may be 10 to 100 mm. For example, 30 to

[0456] The EBL may include at least one compound selected from the group consisting of tris(4-carbazyl-9-ylphenyl)amine (TCTA), tris[4-(diethylamino)phenyl]amine, N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, di-[4-(N,N-di-p-tolylamino)-phenyl]cyclohexane (TAPC), 4,4',4"-tris(3-methylphenylamino)triphenylamine (MTDATA), 1,3-bis(carbazol-9-yl)benzene (m The results showed that the 3-hydroxy-1,4-diphenylamine (H-1,4-bis(2-methylphenyl)amino)phenyl)-1,1'-biphenyl (mCBP), 1,3,5-tris(4-(diphenylamino)phenyl)benzene (TDAPB), 3,5-bis(9H-carbazol-9-yl)-N,N-diphenylaniline (DCDPA), and 2,8-bis(9-phenyl-9H-carbazol-3-yl)dibenzo[b,d]thiophene were used as the raw materials.

[0457] The HBL may include at least one compound selected from the group consisting of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), bis(2-methyl-8-hydroxyquinolinolato-N1,08)-(1,1'-biphenyl-4-phenol)aluminum (BAlq), tris(8-hydroxyquinolinolato)aluminum (Alq3), 2-biphenyl-4-yl-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD), spiro-PBD, Liq, bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine (B3PYMPM), bis[2-(diphenylphosphine)phenyl]ether oxide (DPEPO), 9-(6-9H-carbazole-9-yl)pyridin-3-yl)-9H-3,9'-bicarbazole, and diphenyl-4-triphenylsilyl-phenylphosphine oxide (TSPO1).

[0458] As described above, in the OLED D in at least one of the green pixel region and the yellow-green pixel region, the EML 230 may include the first compound 232 of the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, the driving voltage may be reduced, and the luminous efficiency and lifespan of the OLED D may be improved.

[0459] In the OLED D located in at least one of the green pixel region and the yellow-green pixel region, the EML 230 may further include the second compound 234 represented by Formula 3 as the second host together with the first compound 232 as the first host, so that the OLED D and the organic light-emitting display device 100 have greatly improved driving voltage, luminous efficiency, and lifespan.

[0460] In addition, in the OLED D of the green pixel area, the EML 230 may further include a third compound 236, which is one of the compounds in Formula 5, as a dopant together with the first compound 232 as a first host and the second compound 234 as a second host, so that the OLED D and the organic light-emitting display device 100 have greatly improved driving voltage, luminous efficiency, and lifespan.

[0461] In addition, in the OLED D of the yellow-green pixel area, the EML 230 may further include a third compound 236, which is one of the compounds in Formula 6, as a dopant together with the first compound 232 as a first host and the second compound 234 as a second host, so that the OLED D and the organic light-emitting display device 100 have greatly improved driving voltage, luminous efficiency, and lifespan.

[0462] The OLED D located in at least one of the green pixel region and the yellow-green pixel region may further include an ETL 250 located between the EML 240 and the second electrode 164 as a cathode and including at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9, so that the OLED D and the organic light-emitting display device 100 have significant improvements in driving voltage, luminous efficiency, and lifespan.

[0463] [OLED]

[0464] The anode (ITO), HIL (e.g., the compound in Formula 13, ), HTL (e.g., the compound in Formula 14, ), green EML (e.g., a first host, a second host, and a dopant (compound GD1 in Formula 5, 15 wt%), ), ETL (e.g. compound ET2 in formula 10, ), EIL (such as LiF, ) and cathode (e.g. Al, ) are deposited sequentially to form an OLED.

[0465] [Formula 13]

[0466]

[0467] [Formula 14]

[0468]

[0469] 1. Comparative Example

[0470] (1) Comparative Example 1 (Ref 1)

[0471] Compound CF1 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0472] (2) Comparative Example 2 (Ref2)

[0473] Compound CF2 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0474] (3) Comparative Example 3 (Ref3)

[0475] Compound CF3 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0476] (4) Comparative Example 4 (Ref4)

[0477] Compound CF4 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0478] (5) Comparative Example 5 (Ref5)

[0479] Compound CF5 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0480] (6) Comparative Example 6 (Ref6)

[0481] The compound CF6 in Formula 15 was used as a first host, and the compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0482] (7) Comparative Example 7 (Ref7)

[0483] Compound CF7 in Formula 15 was used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0484] [Formula 15]

[0485]

[0486]

[0487] 2. Example

[0488] (1) Example 1 (Ex1)

[0489] Compound A1 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0490] (2) Example 2 (Ex2)

[0491] Compound A5 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0492] (3) Example 3 (Ex3)

[0493] Compound A6 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0494] (4) Example 4 (Ex4)

[0495] Compound A7 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0496] (5) Example 5 (Ex5)

[0497] Compound A8 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0498] (6) Example 6 (Ex6)

[0499] Compound A9 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0500] (7) Example 7 (Ex7)

[0501] Compound A19 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0502] (8) Example 8 (Ex8)

[0503] Compound A29 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0504] (9) Example 9 (Ex9)

[0505] Compound A30 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0506] (10) Example 10 (Ex10)

[0507] Compound A49 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0508] (11) Example 11 (Ex11)

[0509] Compound A63 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0510] (12) Example 12 (Ex12)

[0511] Compound A83 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0512] (13) Example 13 (Ex13)

[0513] Compound A102 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0514] (14) Example 14 (Ex14)

[0515] Compound A105 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0516] (15) Example 15 (Ex15)

[0517] Compound A116 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0518] (16) Example 16 (Ex16)

[0519] Compound A128 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0520] (17) Example 17 (Ex17)

[0521] Compound A132 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0522] (18) Example 18 (Ex18)

[0523] Compound A141 in Formula 2 was used as a first host and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0524] (19) Examples 19 to 36 (Ex 19 to 36)

[0525] Compound BCZ2 in Formula 4 was used as the second host instead of Compound BCZ1 of Examples 1 to 18.

[0526] The properties of the OLEDs in Comparative Examples 1 to 7 and Examples 1 to 36, such as driving voltage (ΔV) and luminous efficiency, were measured and listed in Tables 1 to 3.

[0527] Table 1

[0528] Body 2 Body 1 ΔV efficiency Ref1 BCZ1 CF1 0.00 100％ Ref2 BCZ1 CF2 -0.03 103％ Ref3 BCZ1 CF3 -0.07 108％ Ref4 BCZ1 CF4 -0.11 113％ Ref5 BCZ1 CF5 0.27 87％ Ref6 BCZ1 CF6 0.31 83％ Ref7 BCZ1 CF7 0.24 90％

[0529] Table 2

[0530] Body 2 Body 1 ΔV efficiency Ex1 BCZ1 A1 -0.20 123％ Ex2 BCZ1 A5 -0.22 126％ Ex3 BCZ1 A6 -0.23 126％ Ex4 BCZ1 A7 -0.23 126％ Ex5 BCZ1 A8 -0.25 129％ Ex6 BCZ1 A9 -0.21 124％ Ex7 BCZ1 A19 -0.24 128％ Ex8 BCZ1 A29 -0.25 129％ Ex9 BCZ1 A30 -0.26 130％ Ex10 BCZ1 A49 -0.17 120％ Ex11 BCZ1 A63 -0.15 117％ Ex12 BCZ1 A83 -0.19 122％ Ex13 BCZ1 A102 -0.25 128％ Ex14 BCZ1 A105 -0.23 127％ Ex15 BCZ1 A115 -0.31 135％ Ex16 BCZ1 A128 -0.25 129％ Ex17 BCZ1 A132 -0.25 129％ Ex18 BCZ1 A141 -0.27 132％

[0531] Table 3

[0532] Body 2 Body 1 ΔV efficiency Ex19 BCZ2 A1 -0.19 121％ Ex20 BCZ2 A5 -0.21 124％ Ex21 BCZ2 A6 -0.21 125％ Ex22 BCZ2 A7 -0.22 125％ Ex23 BCZ2 A8 -0.24 128％ Ex24 BCZ2 A9 -0.20 123％ Ex25 BCZ2 A19 -0.23 126％ Ex26 BCZ2 A29 -0.24 127％ Ex27 BCZ2 A30 -0.24 128％ Ex28 BCZ2 A49 -0.17 119％ Ex29 BCZ2 A63 -0.14 116％ Ex30 BCZ2 A83 -0.18 121％ Ex31 BCZ2 A102 -0.23 127％ Ex32 BCZ2 A105 -0.22 125％ Ex33 BCZ2 A115 -0.29 134％ Ex34 BCZ2 A128 -0.24 127％ Ex35 BCZ2 A132 -0.24 127％ Ex36 BCZ2 A141 -0.26 130％

[0533] As shown in Tables 1 to 3, the OLEDs in Ex1 to Ex36, in which the green EML includes the example of the organic compound of the present invention, have improved driving voltage and light emission efficiency compared to the OLEDs in Ref1 to Ref7.

[0534] In addition, as shown in Examples 15, 16, 18, 33, 34 and 36, when the organic compound of the present invention is represented by Formula 1-3 or 1-4 and Ar2 is Formula 1b-1, L1 is a phenylene group and Ar1 is a phenyl group, the driving voltage of the OLED is significantly reduced and the luminous efficiency of the OLED is significantly improved.

[0535] 3. Comparative Examples 8 to 19 (Ref8 to Ref19)

[0536] Compounds CF8 to CF19 in Formula 16 were respectively used as a first host, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0537] [Formula 16]

[0538]

[0539]

[0540] The properties of the OLEDs in Comparative Examples 1, 8 to 19 and Example 1, such as driving voltage (ΔV), luminous efficiency and lifetime, were measured and listed in Table 4.

[0541] Table 4

[0542] Body 2 Body 1 ΔV efficiency life Ref1 BCZ1 CF1 0.00 100％ 100％ Ref8 BCZ1 CF8 -0.18 121％ 94％ Ref9 BCZ1 CF9 -0.21 124％ 88％ Ref10 BCZ1 CF10 -0.18 121％ 83％ Ref11 BCZ1 CF11 0.00 100％ 97％ Ref12 BCZ1 CF12 -0.20 123％ 83％ Ref13 BCZ1 CF13 0.21 76％ 89％ Ref14 BCZ1 CF14 0.20 77％ 94％ Ref15 BCZ1 CF15 0.01 99％ 98％ Ref16 BCZ1 CF16 0.03 97％ 97％ Ref17 BCZ1 CF17 0.05 94％ 96％ Ref18 BCZ1 CF18 0.02 97％ 97％ Ref19 BCZ1 CF19 -0.17 120％ 83％ Ex1 BCZ1 A1 -0.20 123％ 104％

[0543] As shown in Table 4, the OLED in Ex1 in which the green EML includes the example of the organic compound of the present invention has improved driving voltage, luminous efficiency, and lifespan compared to the OLEDs in Ref1 and Ref8 to Ref19.

[0544] For example, compounds CF8 to CF19 used in Ref8 to Ref19 differ from compound A1 only in the substituent at the terminal of the benzoxazole part. In the OLED of Ex1 using compound A1 in which a C6 aryl group (i.e., phenyl) is bound (bonded) to the terminal of the benzoxazole part, the luminescent properties are significantly improved.

[0545] 4. Comparative Examples 20 to 31 (Ref20 to Ref31)

[0546] Compounds CF20 to CF31 in Formula 17 were respectively used as first hosts, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0547] [Formula 17]

[0548]

[0549]

[0550]

[0551] The properties of the OLEDs in Comparative Examples 1, 20 to 31 and Example 11, such as driving voltage (ΔV), luminous efficiency and lifetime, were measured and listed in Table 5.

[0552] Table 5

[0553] Body 2 Body 1 ΔV efficiency life Ref1 BCZ1 CF1 0.00 100％ 100％ Ref20 BCZ1 CF20 -0.11 113％ 94％ Ref21 BCZ1 CF21 -0.11 112％ 94％ Ref22 BCZ1 CF22 -0.11 113％ 89％ Ref23 BCZ1 CF23 0.09 90％ 92％ Ref24 BCZ1 CF24 -0.10 112％ 94％ Ref25 BCZ1 CF25 0.24 73％ 99％ Ref26 BCZ1 CF26 0.25 71％ 94％ Ref27 BCZ1 CF27 0.07 92％ 97％ Ref28 BCZ1 CF28 0.11 87％ 92％ Ref29 BCZ1 CF29 0.10 88％ 97％ Ref30 BCZ1 CF30 0.10 88％ 86％ Ref31 BCZ1 CF31 -0.12 113％ 83％ Ex11 BCZ1 A63 -0.15 117％ 104％

[0554] As shown in Table 5, the OLED in Ex11 in which the green EML includes the example of the organic compound of the present invention has improved driving voltage, luminous efficiency, and lifespan compared to the OLEDs in Ref1, Ref20 to Ref31.

[0555] For example, compounds CF20 to CF31 used in Ref20 to Ref31 differ from compound A63 only in the substituent at the terminal of the benzoxazole part. In the OLED of Ex11 using compound A63 in which a C6 aryl group (i.e., a phenyl group) is bound (bonded) to the terminal of the benzoxazole part, the luminescent properties are significantly improved.

[0556] 5. Comparative Examples 32 to 37 (Ref32 to Ref37)

[0557] Compounds CF32 to CF37 in Formula 18 were respectively used as first hosts, and compound BCZ1 in Formula 4 was used as a second host to form a green EML (weight ratio of (first host):(second host)=1:1).

[0558] [Formula 18]

[0559]

[0560]

[0561] The properties of the OLEDs in Comparative Examples 1, 32 to 37 and Example 11, such as driving voltage (ΔV), luminous efficiency and lifetime, were measured and listed in Table 6.

[0562] Table 6

[0563] Body 2 Body 1 ΔV efficiency life Ref1 BCZ1 CF1 0.00 100％ 100％ Ref32 BCZ1 CF32 -0.03 103％ 106％ Ref33 BCZ1 CF33 -0.03 103％ 90％ Ref34 BCZ1 CF34 -0.01 101％ 89％ Ref35 BCZ1 CF35 0.33 62％ 87％ Ref36 BCZ1 CF36 -0.02 102％ 95％ Ref37 BCZ1 CF37 0.34 61％ 84％ Ex11 BCZ1 A63 -0.15 117％ 104％

[0564] As shown in Table 6, the OLED in Ex11 in which the green EML includes the example of the organic compound of the present invention has improved driving voltage, luminous efficiency, and lifespan compared to the OLEDs in Ref1 and Ref32 to Ref37.

[0565] For example, the compound CF32 and the compound A63 used in Ref32 each differ only in the connection position (bonding position) between the carbazole part and the triazine part. In the OLED of Ex11 using the compound A63 in which the triazine part is bonded to the 3-position of the carbazole part, the driving voltage is significantly reduced and the luminous efficiency is significantly increased.

[0566] In addition, the OLED of Ex11 using compound A63 in which the triazine portion is bound to the 3-position of the carbazole portion and the C6 aromatic group (i.e., phenyl group) is bound (bonded) to the end of the benzoxazole portion has improved luminous efficiency and lifetime compared to the OLEDs in Ref33 to Ref37 using compounds CF33 to CF37, respectively, in which the triazine portion is bound to the 2-position of the carbazole portion and the aromatic group above C10 is bound to the end of the benzoxazole group.

[0567] Figure 4 A schematic cross-sectional view showing an OLED according to a third embodiment of the present invention.

[0568] like Figure 4 As shown, the OLED D may include first and second electrodes 160 and 164 facing each other, and an organic light emitting layer 162 therebetween. The organic light emitting layer 162 may include a first light emitting component 310 and a second light emitting component 330, the first light emitting component 310 including a first EML 320, and the second light emitting component 330 including a green EML 340. The organic light emitting layer 162 may further include a CGL 350 between the first and second light emitting components 310 and 330.

[0569] The first electrode 160 may serve as an anode for injecting holes and may be formed of a conductive material having a relatively high work function such as ITO or IZO. The second electrode 164 may serve as a cathode for injecting electrons and may be formed of a conductive material having a relatively low work function such as Al, Mg, or AlMg.

[0570] In the top emission type OLED D, the first electrode 160 may further include a reflective layer to act as a reflective electrode. The second electrode 164 may have a thin profile to act as a transparent (e.g., semi-transparent) electrode. Alternatively, in the bottom emission type OLED D, the first electrode 160 may act as a transparent electrode. The second electrode 164 may act as a reflective electrode. However, the embodiments of the present invention are not limited to these examples.

[0571] The CGL 350 may be located between the first and second light emitting parts 310 and 330. The first light emitting part 310, the GCL 350, and the second light emitting part 330 may be sequentially stacked on the first electrode 160. For example, the first light emitting part 310 may be located between the first electrode 160 and the GCL 350. The second light emitting part 330 may be located between the second electrode 164 and the CGL 350.

[0572] The first light emitting part 310 may further include a first ETL 316 between the first EML 320 and the CGL 350. For example, the first ETL 316 may be located between the first EML 320 and the CGL 350.

[0573] In addition, the first light emitting part 310 may further include at least one of a HIL 312 between the first EML 320 and the first electrode 160 and a HTL 314 between the first EML 320 and the HIL 312 .

[0574] In addition, the first light emitting part 310 may further include at least one of a first EBL (not shown) between the first EML 320 and the first HTL 314 and a first HBL (not shown) between the first EML 320 and the first ETL 316 .

[0575] The second light emitting part 330 may further include a second ETL 334 between the second green EML 340 and the second electrode 164 .

[0576] The second light emitting part 330 may further include at least one of a second HTL 332 under the green EML 340 and a second ETL 334 and an EIL 336 between the second electrode 164 .

[0577] In addition, the second light emitting part 330 may further include at least one of a second EBL (not shown) between the second green EML 340 and the second HTL 332 and a second HBL (not shown) between the second green EML 340 and the second ETL 334 .

[0578] The CGL 350 may be located between the first and second light emitting parts 310 and 330. For example, the first and second light emitting parts 310 and 330 may be connected by the CGL 350. The CGL 350 may be a PN junction CGL including an N-type CGL 352 and a P-type CGL 354.

[0579] The N-type CGL 352 may be located between the first ETL 316 and the second HTL 332. The P-type CGL 354 may be located between the N-type CGL 352 and the second HTL 332.

[0580] The N-type CGL 352 may be an organic layer doped with an alkali metal (e.g., Li, Na, K, and Cs) and / or an alkaline earth metal (e.g., Mg, Sr, Ba, and Ra). For example, the N-type CGL 352 may be formed of an N-type charge generating material including an organic material (e.g., 4,7-diphenyl-1,10-phenanthroline (Bphen) and MTDATA) main body, an alkali metal and / or alkaline earth metal dopant, and the doping amount of the dopant may be 0.01 to 30 wt%.

[0581] The P-type CGL 354 can be formed of a P-type charge generating material including an inorganic material (e.g., tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3) or vanadium oxide (V2O5)), an organic material (e.g., NPD, HAT-CN, F4TCNQ, TPD, TNB, TCTA, N,N'-dioctyl-3,4,9,10-perylene diimide (PTCDI-C8)) or a combination thereof.

[0582] The first EML 320 may include a first compound 322 , a second compound 324 , and a third compound 326 . The second EML 340 may include a fourth compound 342 , a fifth compound 344 , and a sixth compound 346 .

[0583] At least one of the first compound 322 and the fourth compound 342 is an example of the organic compound of the present invention represented by Formula 1, and at least one of the second compound 324 and the fifth compound 344 is a compound represented by Formula 3.

[0584] Each of the first EML 320 and the second EML 340 is a green EML or a yellow-green EML. That is, the OLED D is located in the green pixel region or the yellow-green pixel region.

[0585] In the green pixel region, the third compound 326 and the sixth compound 346 are each selected from the compounds in Formula 5. In the yellow-green pixel region, the third compound 326 and the sixth compound 346 are each selected from the compounds in Formula 6.

[0586] In the first green EML 320, the first compound 322 may act as an n-type host (e.g., a first host), the second compound 324 may act as a p-type host (e.g., a second host), and the third compound 326 may act as an illuminant (e.g., a dopant). In the second green EML 340, the fourth compound 342 may act as an n-type host (e.g., a first host), the fifth compound 344 may act as a p-type host (e.g., a second host), and the sixth compound 346 may act as an illuminant (e.g., a dopant). The thickness of the first and second green EMLs 320 and 340 may be 50 to 1000 nm.

[0587] When the first compound 322 and the fourth compound 342 are examples of organic compounds represented by Formula 1, the first compound 322 and the fourth compound 342 may be the same or different. When the second compound 324 and the fifth compound 344 are examples of organic compounds represented by Formula 3, the second compound 324 and the fifth compound 344 may be the same or different. When the third compound 326 and the sixth compound 346 are each selected from the compounds in Formula 5, the third compound 326 and the sixth compound 346 may be the same or different. When the third compound 326 and the sixth compound 346 are each selected from the compounds in Formula 6, the third compound 326 and the sixth compound 346 may be the same or different.

[0588] In the first EML 320, the weight % of each of the first compound 322 and the second compound 324 may be greater than the weight % of the third compound 326. The weight % of the first compound 322 and the weight % of the second compound 324 may be the same or different. In the first EML 320, the weight % of the first compound 322 and the second compound 324 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 322 and the weight % of the second compound 324 may be the same. For example, the first compound 322 and the second compound 324 may be present in the same weight %. Based on the total weight of the components in the first EML 320, the content of the third compound 326 in the first EML 320 may be 5 to 25 weight %.

[0589] In the second EML 340, the weight % of each of the fourth compound 342 and the fifth compound 344 may be greater than the weight % of the third compound 326. The weight % of the fourth compound 342 and the weight % of the fifth compound 344 may be the same or different. In the second EML 340, the weight % of the fourth compound 342 and the fifth compound 344 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the fourth compound 342 and the weight % of the fifth compound 344 may be the same. For example, the fourth compound 342 and the fifth compound 344 may be present in the same weight %. Based on the total weight of the components in the second EML 340, the content of the third compound 326 in the second EML 340 may be 5 to 25 weight %.

[0590] The first ETL 316 and the second ETL 334 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0591] In the OLED D in at least one of the green pixel area and the yellow-green pixel area, at least one of the first EML 320 and the second EML 340 may include the example of the organic compound of the present invention represented by Formula 1. As a result, the driving voltage may be reduced, and the luminous efficiency and lifespan may be improved.

[0592] In addition, at least one of the first EML 320 and the second EML 340 may further include the compound represented by Formula 3 as a second host together with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0593] In addition, at least one of the first EML 320 and the second EML 340 may further include a compound of one of Formula 5 or Formula 6 as a light emitting body together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, light emitting efficiency, and light emitting lifetime.

[0594] In addition, in the OLED D in the green pixel area, at least one of the first ETL 316 and the second ETL 334 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLED D can have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0595] Figure 5 A schematic cross-sectional view showing an organic light emitting display device according to a fourth embodiment of the present invention.

[0596] like Figure 5 As shown, the organic light-emitting display device 400 may include a first substrate 410 that can define a red pixel area RP, a green pixel area GP and a blue pixel area BP, a second substrate 470 facing the first substrate 410, an OLED D located between the first and second substrates 410 and 470 and providing white emission, and the OLED D, and a color filter layer 480 between the second substrate 470.

[0597] The first substrate 410 and the second substrate 470 may each be a glass substrate or a flexible substrate. For example, the first substrate 410 and the second substrate 470 may each be a polyimide (PI) substrate, a polyethersulfone (PES) substrate, a polyethylene naphthalate (PEN) substrate, a polyethylene terephthalate (PET) substrate, or a polycarbonate (PC) substrate.

[0598] The buffer layer 420 may be formed on the substrate. The TFT Tr corresponding to the red, green, and blue pixel regions RP, GP, and BP may be formed on the buffer layer 420. The buffer layer 420 may be formed of an inorganic insulating material, such as silicon oxide or silicon nitride. The buffer layer 420 may have a multilayer structure including a first layer of silicon oxide and a second layer of silicon nitride. The buffer layer 420 may be omitted, and the TFT Tr may be disposed on the substrate 410.

[0599] The semiconductor layer 422 may be formed on the buffer layer 420. The semiconductor layer 422 may include an oxide semiconductor material or polysilicon.

[0600] The gate insulating layer 424 may be formed on the semiconductor layer 422. The gate insulating layer 424 may be formed of an inorganic insulating material such as silicon oxide or silicon nitride.

[0601] The gate 430 may be formed of a conductive material such as metal, and may be formed on the gate insulating layer 424 to correspond to the center of the semiconductor layer 422 .

[0602] The interlayer insulating layer 432 may be formed of an insulating material, and may be formed on the gate electrode 430. The interlayer insulating layer 432 may be formed of an inorganic insulating material such as silicon oxide or silicon nitride, or an organic insulating material such as benzocyclobutene or a photosensitive acrylic resin.

[0603] The interlayer insulating layer 432 may include first and second contact holes 434 and 436 exposing both sides of the semiconductor layer 422. The first and second contact holes 434 and 436 may not cover portions of the surface of the semiconductor layer 422 closer to both ends than to the center of the semiconductor layer 422. The first and second contact holes 434 and 436 may be located at both sides of the gate 430 to be spaced apart from the gate 430.

[0604] The source electrode 440 and the drain electrode 442 may be formed of a conductive material such as metal, and may be formed on the interlayer insulating layer 432 .

[0605] The source electrode 440 and the drain electrode 442 may be spaced apart from each other with respect to the gate electrode 430 , and may contact both sides of the semiconductor layer 422 through the first and second contact holes 434 and 436 , respectively.

[0606] The semiconductor layer 422, the gate electrode 430, the source electrode 440, and the drain electrode 442 may constitute a TFT Tr. The TFT Tr may act as a driving element. For example, the TFT Tr may be connected to ( Figure 1 The driving TFT Td corresponds to the driving TFT Td.

[0607] Although not shown, the gate lines and the data lines may cross each other to define a pixel region, and the switching TFT may be connected to the gate lines and the data lines. The switching TFT may be connected to the TFT Tr as a driving element.

[0608] In addition, a power supply line which may be parallel to and spaced apart from one of the gate line and the data line, and a storage capacitor for maintaining a voltage of the gate electrode of the TFT Tr in one frame may also be formed.

[0609] The planarization layer 450 may include a drain contact hole 452 exposing the drain electrode 442 of the TFT Tr, and may cover the TFT Tr. The drain contact hole 452 may not cover the drain electrode 442 .

[0610] The first electrode 460 may be connected to the drain electrode 442 of the TFT Tr through the drain contact hole 452, and may be separately formed in each pixel region and on the planarization layer 450. The first electrode 460 may be an anode, and may include a transparent conductive oxide material layer formed of a conductive material such as a transparent conductive oxide (TCO) having a relatively high work function.

[0611] For example, the transparent conductive oxide material layer of the first electrode 460 may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), tin oxide (SnO), zinc oxide (ZnO), indium copper oxide (ICO) and Al:ZnO (AZO).

[0612] The first electrode 460 may also include a reflective layer and have a double-layer structure or a triple-layer structure. For example, the reflective layer may be formed of silver (Ag) or an aluminum-palladium-copper (APC) alloy. In the top-emitting organic light-emitting display device 400, the first electrode 460 may have a double-layer structure of Ag / ITO or APC / ITO, or a triple-layer structure of ITO / Ag / ITO or ITO / APC / ITO. However, the embodiments of the present invention are not limited to these examples.

[0613] The bank layer 466 may be formed on the planarization layer 450 to cover the edge of the first electrode 460. For example, the bank layer 466 may be located at the boundary of the pixel region, and the center of the first electrode 460 may be exposed in the pixel region. Since the OLED D may emit white light in the red, green, and blue pixel regions RP, GP, and BP, the organic light emitting layer 462 may be formed as a common layer in the red, green, and blue pixel regions RP, GP, and BP without separation. The bank layer 466 may be formed to prevent current leakage at the edge of the first electrode 460, and may be omitted.

[0614] The organic light emitting layer 462 is disposed on the first electrode 460 .

[0615] In one aspect of the present invention, the organic light emitting layer 462 may have a triple-stacked structure including a first light emitting member including one of a green EML and a yellow-green EML, a second light emitting member and a third light emitting member each including a blue EML.

[0616] In one aspect of the present invention, the organic light emitting layer 462 may have a two-layered structure including a first light emitting member including at least one of a green EML and a yellow-green EML and a second light emitting member including a blue EML.

[0617] At least one of the green EML and the yellow-green EML includes the organic compound of the present invention represented by Formula 1.

[0618] The second electrode 464 may be formed over the substrate 410 where the organic light emitting layer 462 may be formed.

[0619] In the organic light emitting display device 400 , since light emitted from the organic light emitting layer 462 may be emitted into the color filter layer 480 through the second electrode 464 , the second electrode 464 may have a thin profile in order to transmit the light.

[0620] The first electrode 460 , the organic light emitting layer 462 , and the second electrode 464 may constitute an OLED D.

[0621] The color filter layer 480 may be located above the OLED D and may include a red filter pattern 482, a green filter pattern 484, and a blue filter pattern 486 corresponding to the red, green, and blue pixel regions RP, GP, and BP, respectively. The red filter pattern 482 may include at least one of a red dye and a red pigment. The green filter pattern 484 may include at least one of a green dye and a green pigment. The blue filter pattern 486 may include at least one of a blue dye and a blue pigment.

[0622] Although not shown, the color filter layer 480 may be attached on the OLED D through an adhesive layer. Alternatively, the color filter layer 480 may be directly formed on the OLED D. However, embodiments of the present invention are not limited to these examples.

[0623] An encapsulation layer (not shown) may be formed to prevent moisture from penetrating into the OLED D. For example, the encapsulation layer may include a first inorganic insulating layer, an organic insulating layer, and a second inorganic insulating layer sequentially stacked, but the encapsulation layer is not limited thereto. The encapsulation layer may be omitted.

[0624] A polarizing plate for reducing ambient light reflection may be disposed above the top emission type OLED D. For example, the polarizing plate may be a circular polarizing plate.

[0625] exist Figure 5 In the OLED of FIG. 4 , the first electrode 460 and the second electrode 464 may be a reflective electrode and a transparent (or semi-transparent) electrode, respectively. The color filter layer 480 may be disposed above the OLED D. Alternatively, when the first electrode 460 and the second electrode 464 are transparent (or semi-transparent) electrodes and reflective electrodes, respectively, the color filter layer 480 may be disposed between the OLED D and the first substrate 410. However, embodiments of the present invention are not limited to these examples.

[0626] A color conversion layer (not shown) may be formed between the OLED D and the color filter layer 480. The color conversion layer may include a red conversion layer, a green conversion layer, and a blue conversion layer corresponding to the red, green, and blue pixel regions RP, GP, and BP, respectively. White light from the OLED D may be converted into red light, green light, and blue light through the red, green, and blue conversion layers, respectively. For example, the color conversion layer may include quantum dots. Thus, the color purity of the organic light emitting display device 400 may be further improved.

[0627] Instead of the color filter layer 480, a color conversion layer may be included.

[0628] As described above, in the organic light emitting display device 400, the OLED D in the red, green, and blue pixel regions RP, GP, and BP may emit white light. The white light from the organic light emitting diode D may pass through the red filter layer 482, the green filter layer 484, and the blue filter layer 486. As a result, green light and blue light may be provided by the red pixel region RP, the green pixel region GP, ​​and the blue pixel region BP, respectively.

[0629] exist Figure 5 In the embodiment of the present invention, the OLED D emitting white light can be used for a display device. Alternatively, the OLED D can be formed on the entire surface of the substrate without at least one of a driving element and a color filter layer, thereby being used for a light-emitting device. A display device and a light-emitting device each including an example of the OLED D of the present invention may be referred to as an organic light-emitting device. However, embodiments of the present invention are not limited to these examples.

[0630] Figure 6 A schematic cross-sectional view showing an OLED according to a fifth embodiment of the present invention.

[0631] like Figure 6As shown, the organic light emitting layer 462 may include a first light emitting component 530, a second light emitting component 540, and a third light emitting component 560, wherein the first light emitting component 530 includes a green EML 510a, the second light emitting component 540 includes a first blue EML 550, and the third light emitting component 560 includes a second blue EML 570. In addition, the organic light emitting layer 462 may further include a first CGL 580 between the first light emitting component 530 and the second light emitting component 540, and a second CGL 590 between the first light emitting component 530 and the third light emitting component 560. In addition, the first light emitting component 530 may further include a red EML 510b.

[0632] The second light emitting part 540 may be located between the first electrode 460 and the first light emitting part 530. The third light emitting part 560 may be located between the first light emitting part 530 and the second electrode 464. The second light emitting part 540 may be located between the first electrode 460 and the first CGL 580. The third light emitting part 560 may be located between the second CGL 590 and the second electrode 464. For example, the second light emitting part 540, the first CGL 580, the first light emitting part 530, the second CGL 590, and the third light emitting part 560 may be sequentially stacked on the first electrode 460.

[0633] In the first light emitting part 530 , the red EML 510 b may be disposed under the green EML 510 a .

[0634] The first light emitting part 530 may further include a first ETL 534 disposed on the green EML 510a. In addition, the first light emitting part 530 may further include a first HTL 532 disposed under the red EML 510b.

[0635] For example, in the first light emitting part 530 , the red EML 510 b may be located between the first HTL 532 and the green EML 510 a . The green EML 510 a may be located between the red EML 510 b and the first ETL 534 .

[0636] The second light emitting part 540 may further include at least one of a second HTL 544 disposed under the first blue EML 550 and a second ETL 546 disposed on the first blue EML 550. In addition, the second light emitting part 540 may further include a HIL 542 between the first electrode 460 and the second HTL 544.

[0637] In addition, the second light emitting part 540 may further include a first EBL (not shown) between the second HTL 544 and the first blue EML 550 , and a first HBL (not shown) between the second ETL 546 and the first blue EML 550 .

[0638] The third light emitting part 560 may further include at least one of a third HTL 562 disposed under the second blue EML 570 and a third ETL 564 disposed on the second blue EML 570. In addition, the third light emitting part 560 may include an EIL 566 between the second electrode 464 and the third ETL 564.

[0639] In addition, the third light emitting part 560 may further include a second EBL (not shown) between the third HTL 562 and the second blue EML 570 , and a second HBL (not shown) between the third ETL 564 and the second blue EML 570 .

[0640] The green EML 510a may include a first compound 512 of the organic compound of the present invention represented by Formula 1. In addition, the green EML 510a may further include a second compound 514 of the compound represented by Formula 3. In addition, the green EML 510a may further include a third compound 516 of the compound represented by Formula 5.

[0641] In the green EML 510a, the first compound 512 may be an n-type host (eg, a first host), the second compound 514 may be a p-type host (eg, a second host), and the third compound 516 may be a light emitting body (eg, a dopant). The thickness of the EML 510a may be 50 to 100 mm.

[0642] In the green EML 510a, the weight % of each of the first compound 512 and the second compound 514 may be greater than the weight % of the third compound 516. The weight % of the first compound 512 and the weight % of the second compound 514 may be the same or different. In the green EML 510a, the weight % of the first compound 512 and the second compound 514 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 512 and the weight % of the second compound 514 may be the same. Based on the total weight of the components in the green EML 510a, the content of the third compound 516 in the green EML 510a may be 5 to 25 weight %.

[0643] The first to third ETLs 534 , 546 , and 564 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0644] The red EML 510b may include a red host and a red dopant. The red dopant may include at least one of a red phosphorescent compound, a red fluorescent compound, and a red delayed fluorescent compound. In the red EML 510b, the weight % of the red host may be greater than the red dopant. In the red EML 510b, the content of the red dopant may be 1 to 10 weight %, or 1 to 5 weight % based on the total weight of the components in the red EML 510b.

[0645] For example, the red host may be at least one selected from the group consisting of, but not limited to: 9,9'-diphenyl-9H,9'H-3,3'-bicarbazole (BCzPh), CBP, 1,3,5-tri(carbazole-9-yl)benzene (TCP), TCTA, 4,4'-bis(carbazole-9-yl)-2,2'-dimethylbiphenyl (CDBP), 2,7-bis(carbazole-9-yl)-9,9-dimethylfluorene (DMFL-CBP), 2,2',7,7'-tetra(carbazole-9-yl)-9,9-spirofluorene ( spiro-CBP), DPEPO, 4'-(9H-carbazole-9-yl)biphenyl-3,5-dicarbonitrile (PCzB-2CN), 3'-(9H-carbazole-9-yl)biphenyl-3,5-dicarbonitrile (mCzB-2CN), 3,6-bis(carbazole-9-yl)-9-(2-ethylhexyl)-9H-carbazole (TCz1), bis(2-hydroxyphenyl)pyridine)beryllium (Bepp2), bis(10-hydroxybenzo[h]quinoline)beryllium (Bebq2), and 1,3,5-tri(1-pyrenyl)benzene (TPB3).

[0646] The red dopant may be at least one selected from the group consisting of, but not limited to: [bis(2-(4,6-dimethyl)phenylquinoline)](2,2,6,6-tetramethyl-3,5-heptanedione)iridium(III), bis[2-(4-n-hexylphenyl)quinoline](acetylacetonate)iridium(III)(Hex-Ir(phq)2(acac)), tris[2-(4-n-hexylphenyl)quinoline]iridium(III)(Hex-Ir(phq)3), tris[2-phenyl-4-methylquinoline]iridium(III)(Ir(Mphq)3), bis(2-phenylquinoline)(2,2,6,6-tetramethyltetramethyl-3,5-heptanedione)iridium(III)(Ir(dpm)PQ2), bis(phenylisoquinoline)(2,2,6 ,6-tetramethyltetramethyl-3,5-heptanedione)iridium(III) (Ir(dpm)(piq)2), bis[(4-n-hexylphenyl)isoquinolinato](acetylacetonato)iridium(III) (Hex-Ir(piq)2(acac)), tris[2-(4-n-hexylphenyl)quinolinato]iridium(III) (Hex-Ir(piq)3), tris(2-(3-methylphenyl)-7-methylquinolinato)iridium (Ir(dmpq)3), bis[2-(2-methylphenyl)-7-methylquinolinato](acetylacetonato)iridium(III) (Ir(dmpq)2(acac)) and bis[2-(3,5-dimethylphenyl)-4-methylquinolinato](acetylacetonato)iridium(III) (Ir(mphmq)2(acac)).

[0647] The first blue EML 550 in the second light emitting part 540 may include a first blue host and a first blue dopant. The second blue EML 570 in the third light emitting part 560 may include a second blue host and a second blue dopant.

[0648] The first and second blue dopants may each include at least one of a blue phosphorescent compound, a blue fluorescent compound, and a blue delayed fluorescent compound. In the first blue EML 550, the weight % of the first blue host may be greater than that of the first blue dopant. In the second blue EML 570, the weight % of the second blue host may be greater than that of the second blue dopant. In each of the first and second blue EMLs 550 and 570, the content of the first and second blue dopants may each be 1 to 10 weight %, or 1 to 5 weight %, based on the total weight of the respective components in the first and second blue EMLs 550 and 570.

[0649] For example, the first and second blue hosts may be independently at least one selected from the group consisting of, but not limited to, mCP, 9-(3-(9H-carbazole-9-yl)phenyl)-9H-carbazole-3-carbonitrile (mCP-CN), mCBP, CBP-CN, 9-(3-(9H-carbazole-9-yl)phenyl)-3-(diphenylphosphino)-9H-carbazole (mCPPO1), 3,5-di(9H-carbazole-9-yl)biphenyl (Ph-mCP), TSPO1, 9-(3'-(9H- Carbazole-9-yl)-[1,1′-biphenyl]-3-yl)-9H-pyrido[2,3-b]indole (CzBPCb), bis(2-methylphenyl)diphenylsilane (UGH-1), 1,4-bis(triphenylsilyl)benzene (UGH-2), 1,3-bis(triphenylsilyl)benzene (UGH-3), 9,9-spirobifluoren-2-yl-diphenyl-phosphine oxide (SPPO1), and 9,9′-(5-(triphenylsilyl)-1,3-phenylene)bis(9H-carbazole) (SimCP).

[0650] The first and second blue dopants may be independently at least one selected from the group consisting of, but not limited to, 4,4'-bis[4-(di-p-tolylamino)phenylvinyl]biphenyl (DPAVBi), 4-(di-p-tolylamino)-4-4'-[(di-p-tolylamino)phenylvinyl]stilbene (DPAVB), 4,4'-bis[4-(diphenylamino)phenylvinyl]biphenyl (BDAVBi), 2,7-bis(4-diphenylamino)phenylvinyl)-9,9-spirofluorene (spiro-DPVBi), [1,4-bis[2-[4-[N,N-di(p-tolyl)amino]phenyl]vinyl]benzene (DSB), 1-4-bis-[4-(N,N-diphenyl)amino]phenylvinyl-benzene (DSA), 2,5,8,11-tetra-tert-butylperylene (TBPe), Bis(2-hydroxyphenyl)-pyridinium) beryllium (Bepp2), 9-(9-phenylcarbazole-3-yl)-10-(naphthalene-1-yl) anthracene (PCAN), mer-tri(1-phenyl-3-methylimidazolin-2-yl)-C,C(2)'iridium(III) (mer-Ir(pmi)3), f-tri(1,3-diphenyl-benzimidazolin-2-ylalkyl)-C,C(2)'iridium(III) ( fac-Ir(dpbic)3), bis(3,4,5-trifluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl)iridium(III) (Ir(tfpd)2pic), tris(2-(4,6-difluorophenyl)pyridine))iridium(III) (Ir(Fppy)3), and bis[2-(4,6-difluorophenyl)pyridine-C2,N](picolinate)iridium(III) (FIrpic).

[0651] For example, the first blue EML 550 and the second blue EML 570 may include an anthracene derivative as a blue host and a boron derivative as a blue dopant.

[0652] The first CGL 580 may be located between the first light emitting component 530 and the second light emitting component 540, and the second CGL 590 may be located between the first light emitting component 530 and the third light emitting component 560. For example, the first light emitting component 530 and the second light emitting component 540 may be connected through the first CGL 580. The first light emitting component 530 and the third light emitting component 560 may be connected through the second CGL 590. The first CGL 580 may be a PN junction CGL including a first N-type CGL 582 and a first P-type CGL 584. The second CGL 590 may be a PN junction CGL including a second N-type CGL 592 and a second P-type CGL 594.

[0653] In the first CGL 580, the first N-type CGL 582 may be located between the HTL 532 and the second ETL 546. The first P-type CGL 584 may be located between the first N-type CGL 582 and the first HTL 532.

[0654] In the second CGL 590 , the second N-type CGL 592 may be located between the first ETL 534 and the third HTL 562 . The second P-type CGL 594 may be located between the second N-type CGL 592 and the third HTL 562 .

[0655] The first and second N-type CGLs 582 and 592 may each include the above-mentioned N-type charge generation material, and the first and second N-type CGLs 584 and 594 may each include the above-mentioned P-type charge generation material.

[0656] As described above, the OLED D of the present invention may include a first light emitting component 530 including a green EML 510a and a red EML 510b, a second light emitting component 540 including a first blue EML 550, and a third light emitting component 560 including a second blue EML 570, so that the OLED D may provide white light.

[0657] The green EML 510a includes the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, the driving voltage may be reduced, and the light emitting efficiency and lifespan may be improved.

[0658] In addition, the green EML 510a may further include the compound represented by Formula 3 as a second host together with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0659] In addition, the green EML 510a may further include the compound represented by Formula 5 as a light emitting body together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, light emission efficiency, and light emission lifetime.

[0660] In addition, at least one of the first to third ETLs 534, 546 and 564 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0661] Figure 7 A schematic cross-sectional view showing an OLED according to a sixth embodiment of the present invention.

[0662] like Figure 7 As shown, the organic light emitting layer 462 may include a first light emitting component 630, a second light emitting component 640, and a third light emitting component 660, wherein the first light emitting component 630 includes a green EML 610a, a red EML 610b, and a yellow-green EML 610c, the second light emitting component 640 includes a first blue EML 650, and the third light emitting component 660 includes a second blue EML 670. In addition, the organic light emitting layer 462 may further include a first CGL 680 between the first and second light emitting components 630 and 640 and a second CGL 690 between the first and third light emitting components 630 and 660.

[0663] The second light emitting part 640 may be located between the first electrode 460 and the first light emitting part 630. The third light emitting part 660 may be located between the first light emitting part 630 and the second electrode 464. The second light emitting part 640 may be located between the first electrode 460 and the first CGL 680. The third light emitting part 660 may be located between the second CGL 690 and the second electrode 464. For example, the second light emitting part 640, the first CGL 680, the first light emitting part 630, the second CGL 690, and the third light emitting part 660 may be sequentially stacked on the first electrode 460.

[0664] In the first light emitting part 630, the red EML 610b may be disposed below the yellow-green EML 610c. The green EML 610a may be disposed on the yellow-green EML 610c. For example, Figure 6 The first light emitting member 530 of the OLED D may include an EML having a double-layer structure including EMLs 510a and 510b, and Figure 7The first light emitting member 630 of the OLED D in FIG. 5 may include an EML having a three-layer structure which may include EMLs 610 a , 610 b , and 610 c .

[0665] The first light emitting part 630 may further include a first ETL 634 disposed on the green EML 610a. In addition, the first light emitting part 630 may further include a first HTL 632 disposed under the red EML 610b.

[0666] For example, in the first light emitting part 630 , the red EML 610 b may be located between the first HTL 632 and the yellow-green EML 610 c , and the green EML 610 a may be located between the yellow-green EML 610 c and the first ETL 634 .

[0667] The second light emitting part 640 may further include at least one of a second HTL 644 disposed under the first blue EML 650 and a second ETL 646 disposed on the first blue EML 650. In addition, the second light emitting part 640 may further include a HIL 642 between the first electrode 460 and the second HTL 644.

[0668] In addition, the second light emitting part 640 may further include a first EBL (not shown) between the second HTL 644 and the first blue EML 650 , and a first HBL (not shown) between the second ETL 646 and the first blue EML 650 .

[0669] The third light emitting part 660 may further include at least one of a third HTL 662 disposed under the second blue EML 670 and a third ETL 664 disposed on the second blue EML 670. In addition, the third light emitting part 660 may include an EIL 666 between the second electrode 464 and the third ETL 664.

[0670] In addition, the third light emitting part 660 may further include a second EBL (not shown) between the third HTL 662 and the second blue EML 670 , and a second HBL (not shown) between the third ETL 664 and the second blue EML 670 .

[0671] The green EML 610a may include a first compound 612 of the organic compound of the present invention represented by Formula 1. In addition, the green EML 610a may further include a second compound 614 of the compound represented by Formula 3. In addition, the green EML 610a may further include a third compound 616 of the compound represented by Formula 5.

[0672] In the green EML 610a, the first compound 612 may be an n-type host (eg, a first host), the second compound 614 may be a p-type host (eg, a second host), and the third compound 616 may be an illuminant (eg, a dopant). The thickness of the green EML 610a may be 50 to 100 mm.

[0673] In the green EML 610a, the weight % of each of the first and second compounds 612 and 614 may be greater than the weight % of the third compound 616. The weight % of the first compound 612 and the weight % of the second compound 614 may be the same or different. In the green EML 610a, the weight % of the first compound 612 and the second compound 614 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 612 and the weight % of the second compound 614 may be the same. For example, the weight % of the first compound 612 and the second compound 614 may be present at the same weight %, and the content of the third compound 616 in the green EML 610a may be 5 to 25 weight %.

[0674] The yellow-green EML 610c may include a first compound 622 of the organic compound of the present invention represented by Formula 1. In addition, the yellow-green EML 610c may further include a second compound 624 of the compound represented by Formula 3. In addition, the yellow-green EML 610c may further include a third compound 626 of the compound represented by Formula 6.

[0675] In the yellow-green EML 610c, the first compound 622 may be an n-type host (eg, a first host), the second compound 624 may be a p-type host (eg, a second host), and the third compound 626 may be an emitting body (eg, a doping body). The thickness of the yellow-green EML 610c may be 50 to 100 μm.

[0676] In the yellow-green EML 610c, the weight % of each of the first and second compounds 622 and 624 may be greater than the weight % of the third compound 626. The weight % of the first compound 622 and the weight % of the second compound 624 may be the same or different. In the yellow-green EML 610c, the weight % of the first compound 622 and the second compound 624 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 622 and the weight % of the second compound 624 may be the same. For example, the weight % of the first compound 622 and the second compound 624 may be present in the same weight %, and the content of the third compound 626 in the yellow-green EML 610c may be 5 to 25 weight %.

[0677] The first to third ETLs 634 , 646 , and 664 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0678] The red EML 610b may include a red host and a red dopant. The red dopant may include at least one of a red phosphorescent compound, a red fluorescent compound, and a red delayed fluorescent compound. In the red EML 610b, the weight % of the red host may be greater than the red dopant. In the red EML 610b, the content of the red dopant may be 1 to 10 weight %, or 1 to 5 weight % based on the total weight of the components in the red EML 610b.

[0679] The first blue EML 650 in the second light emitting part 640 may include a first blue host and a first blue dopant. The second blue EML 670 in the third light emitting part 660 may include a second blue host and a second blue dopant.

[0680] The first and second blue dopants may each include at least one of a blue phosphorescent compound, a blue fluorescent compound, and a blue delayed fluorescent compound. In the first blue EML 650, the weight % of the first blue host may be greater than that of the first blue dopant. In the second blue EML 670, the weight % of the second blue host may be greater than that of the second blue dopant. In each of the first and second blue EMLs 650 and 670, the content of the first and second blue dopants may each be 1 to 10 weight %, or 1 to 5 weight %, based on the total weight of the respective components in the first and second blue EMLs 650 and 670.

[0681] The first CGL 680 may be located between the first and second light emitting components 630 and 640. The second CGL 690 is located between the first and third light emitting components 630 and 660. For example, the first and second light emitting components 630 and 640 may be connected through the first CGL 680. The first and third light emitting components 630 and 660 may be connected through the second CGL 690. The first CGL 680 may be a PN junction CGL including a first N-type CGL 682 and a first P-type CGL 684. The second CGL 690 may be a PN junction CGL including a second N-type CGL 692 and a second P-type CGL 694.

[0682] In the first CGL 680 , the first N-type CGL 682 may be located between the HTL 632 and the second ETL 646 . The first P-type CGL 684 may be located between the first N-type CGL 682 and the first HTL 632 .

[0683] In the second CGL 690 , the second N-type CGL 692 may be located between the first ETL 634 and the third HTL 662 . The second P-type CGL 694 may be located between the second N-type CGL 692 and the third HTL 662 .

[0684] As described above, the OLED D according to an exemplary embodiment of the present invention may include a first light emitting component 630 including a green EML 610a, a red EML 610b, and a yellow-green EML 610c, a second light emitting component 640 including a first blue EML 650, and a third light emitting component 660 including a second blue EML 670, so that the OLED D may provide white light.

[0685] At least one of the green EML 610a and the yellow-green EML 610c includes the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, driving voltage may be reduced, and luminous efficiency and lifespan may be improved.

[0686] In addition, at least one of the green EML 610a and the yellow-green EML 610c may further include the compound represented by Formula 3 as a second host together with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0687] In addition, the green EML 610a may further include the compound represented by Formula 5 as a light emitter together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, light emission efficiency, and light emission lifetime.

[0688] The yellow-green EML 610c may also include the compound represented by Formula 6 as a light emitter together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, light emission efficiency, and light emission lifetime.

[0689] In addition, at least one of the first to third ETLs 634, 646 and 664 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0690] Figure 8 A schematic cross-sectional view showing an organic light emitting display device according to a seventh embodiment of the present invention.

[0691] like Figure 8As shown, the organic light emitting layer 462 may include a first light emitting component 730, a second light emitting component 740, and a third light emitting component 760, wherein the first light emitting component 730 includes a yellow-green EML 710, the second light emitting component 740 includes a first blue EML 750, and the third light emitting component 760 includes a second blue EML 770. In addition, the organic light emitting layer 462 may further include a first CGL 780 between the first and second light emitting components 730 and 740 and a second CGL 790 between the first and third light emitting components 730 and 760.

[0692] The second light emitting part 740 may be located between the first electrode 460 and the first light emitting part 730. The third light emitting part 760 may be located between the first light emitting part 730 and the second electrode 464. The second light emitting part 740 may be located between the first electrode 460 and the first CGL 780. The third light emitting part 760 may be located between the second CGL 790 and the second electrode 464. For example, the second light emitting part 740, the first CGL 780, the first light emitting part 730, the second CGL 790, and the third light emitting part 760 may be sequentially stacked on the first electrode 460.

[0693] Figure 6 The first light emitting member 530 of the OLED D may include an EML having a double-layer structure including EMLs 510a and 510b, and Figure 7 The first light emitting member 730 of the OLED D in FIG. 1 may include an EML having a three-layer structure which may include EMLs 610 a , 610 b , and 610 c . Figure 8 The first light emitting part 730 of the OLED D in FIG. 1 may include an EML having a single-layer structure.

[0694] The first light emitting part 730 may further include a first ETL 734 disposed on the yellow-green EML 710 and a first HTL 732 disposed under the yellow-green EML 710 .

[0695] For example, in the first light emitting part 730 , a lower surface of the yellow-green EML 710 may be in contact with the first HTL 732 , and an upper surface of the yellow-green EML 710 may be in contact with the first ETL 734 .

[0696] The second light emitting part 740 may further include at least one of a second HTL 744 disposed under the first blue EML 750 and a second ETL 746 disposed on the first blue EML 750. In addition, the second light emitting part 740 may further include a HIL 742 between the first electrode 460 and the second HTL 744.

[0697] In addition, the second light emitting part 740 may further include a first EBL (not shown) between the second HTL 744 and the first blue EML 750 , and a first HBL (not shown) between the second ETL 746 and the first blue EML 750 .

[0698] The third light emitting part 760 may further include at least one of a third HTL 762 disposed under the second blue EML 770 and a third ETL 764 disposed on the second blue EML 770. In addition, the third light emitting part 760 may include an EIL 766 between the second electrode 464 and the third ETL 764.

[0699] In addition, the third light emitting part 760 may further include a second EBL (not shown) between the third HTL 762 and the second blue EML 770 and a second HBL (not shown) between the third ETL 764 and the second blue EML 770 .

[0700] The yellow-green EML 710 may include a first compound 712 of the organic compound of the present invention represented by Formula 1. In addition, the yellow-green EML 710 may further include a second compound 714 of the compound represented by Formula 3. In addition, the yellow-green EML 710 may further include a third compound 716 of the compound represented by Formula 6.

[0701] In the yellow-green EML 710, the first compound 712 may be an n-type host (eg, a first host), the second compound 714 may be a p-type host (eg, a second host), and the third compound 716 may be an emitting body (eg, a doping body). The thickness of the yellow-green EML 710 may be 50 to 1000 nm.

[0702] In the yellow-green EML 710, the weight % of each of the first and second compounds 712 and 714 may be greater than the weight % of the third compound 716. The weight % of the first compound 712 and the weight % of the second compound 714 may be the same or different. In the yellow-green EML 710, the weight % of the first compound 712 and the second compound 714 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 712 and the weight % of the second compound 714 may be the same. For example, the weight % of the first compound 712 and the second compound 714 may be present at the same weight %, and the content of the third compound 716 in the yellow-green EML 710 may be 5 to 25 weight %.

[0703] The first to third ETLs 734 , 746 , and 764 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0704] The first blue EML 750 in the second light emitting part 740 may include a first blue host and a first blue dopant. The second blue EML 770 in the third light emitting part 760 may include a second blue host and a second blue dopant.

[0705] The first and second blue dopants may each include at least one of a blue phosphorescent compound, a blue fluorescent compound, and a blue delayed fluorescent compound. In the first blue EML 750, the weight % of the first blue host may be greater than that of the first blue dopant. In the second blue EML 770, the weight % of the second blue host may be greater than that of the second blue dopant. In each of the first and second blue EMLs 750 and 770, the content of the first and second blue dopants may each be 1 to 10 weight %, or 1 to 5 weight %, based on the total weight of the respective components in the first and second blue EMLs 750 and 770.

[0706] The first CGL 780 may be located between the first and second light emitting components 730 and 740. The second CGL 790 may be located between the first and third light emitting components 730 and 760. For example, the first and second light emitting components 730 and 740 may be connected through the first CGL 780. The first and third light emitting components 730 and 760 may be connected through the second CGL 790. The first CGL 780 may be a PN junction CGL including a first N-type CGL 782 and a first P-type CGL 784. The second CGL 790 may be a PN junction CGL including a second N-type CGL 792 and a second P-type CGL 794.

[0707] In the first CGL 780 , the first N-type CGL 782 may be located between the HTL 732 and the second ETL 746 . The first P-type CGL 784 may be located between the first N-type CGL 782 and the first HTL 732 .

[0708] In the second CGL 790, the second N-type CGL 792 may be located between the first ETL 734 and the third HTL 762. The second P-type CGL 794 may be located between the second N-type CGL 792 and the third HTL 762.

[0709] As described above, the OLED D according to an exemplary embodiment of the present invention may include a first light emitting part 730 including a yellow-green EML 710, a second light emitting part 740 including a first blue EML 750, and a third light emitting part 760 including a second blue EML 770, so that the OLED D may provide white light.

[0710] The yellow-green EML 710 includes the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, driving voltage may be reduced, and luminous efficiency and lifespan may be improved.

[0711] In addition, the yellow-green EML 710 may further include the compound represented by Formula 3 as a second host together with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0712] In addition, the yellow-green EML 710 may further include the compound represented by Formula 6 as a light emitter together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0713] In addition, at least one of the first to third ETLs 734, 746 and 764 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0714] Fig. 9 A schematic cross-sectional view showing an OLED according to an eighth embodiment of the present invention.

[0715] like Fig. 9 As shown, the organic light emitting layer 462 may include a first light emitting component 830 and a second light emitting component 840, the first light emitting component 830 includes a green EML 810a, and the second light emitting component 840 includes a first blue EML 850. In addition, the organic light emitting layer 462 may further include a CGL 860 between the first and second light emitting components 830 and 840. In addition, the first light emitting component 830 may further include a red EML 810b.

[0716] The second light emitting part 840 may be located between the first electrode 460 and the first light emitting part 830. The first light emitting part 830 may be located between the CGL 860 and the second electrode 464, and the second light emitting part 840 may be located between the first electrode 460 and the CGL 860. For example, the second light emitting part 840, the CGL 860, and the first light emitting part 830 may be sequentially stacked on the first electrode 460.

[0717] Figure 6 The OLED D includes first to third light emitting components 530, 540 and 560, Figure 7 The OLED D includes first to third light emitting components 630, 640 and 660, and Figure 8The OLED D includes first to third light emitting components 730, 740 and 760. On the other hand, Fig. 9 The OLED D includes first and second light emitting components 830 and 840 .

[0718] In the first light emitting part 630 , the red EML 610 b may be disposed under the green EML 610 a .

[0719] The first light emitting part 830 may further include a first ETL 834 disposed on the green EML 810 a and a first HTL 832 disposed under the red EML 810 b .

[0720] In addition, the first light emitting part 830 may further include an EIL 836 on or over the first EML 834 .

[0721] The first light emitting part 830 may further include a first EBL (not shown) between the first HTL 832 and the red EML 810 b and a first HBL (not shown) between the first ETL 834 and the green EML 810 a .

[0722] The second light emitting part 840 may further include at least one of a second HTL 844 disposed under the blue EML 850 and a second ETL 846 disposed on the blue EML 850. In addition, the second light emitting part 840 may further include a HIL 842 between the first electrode 460 and the second HTL 844.

[0723] In addition, the second light emitting part 840 may further include a second EBL (not shown) between the second HTL 844 and the blue EML 850 , and a second HBL (not shown) between the second ETL 846 and the blue EML 850 .

[0724] The green EML 810a may include a first compound 812 of the organic compound of the present invention represented by Formula 1. In addition, the green EML 810a may further include a second compound 814 of the compound represented by Formula 3. In addition, the green EML 810a may further include a third compound 816 of the compound represented by Formula 5.

[0725] In the green EML 810a, the first compound 812 may be an n-type host (eg, a first host), the second compound 814 may be a p-type host (eg, a second host), and the third compound 816 may be an illuminant (eg, a dopant). The thickness of the green EML 810a may be 50 to 100 μm.

[0726] In the green EML 810a, the weight % of each of the first and second compounds 812 and 814 may be greater than the weight % of the third compound 816. The weight % of the first compound 812 and the weight % of the second compound 814 may be the same or different. In the green EML 810a, the weight % of the first compound 812 and the second compound 814 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 812 and the weight % of the second compound 814 may be the same. For example, the weight % of the first compound 812 and the second compound 814 may be present at the same weight %, and the content of the third compound 816 in the green EML 810a may be 5 to 25 weight %.

[0727] The first and second ETLs 834 and 846 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0728] The red EML 810b may include a red host and a red dopant. The red dopant may include at least one of a red phosphorescent compound, a red fluorescent compound, and a red delayed fluorescent compound. In the red EML 810b, the weight % of the red host may be greater than the red dopant. In the red EML 810b, the content of the red dopant may be 1 to 10 weight %, or 1 to 5 weight % based on the total weight of the components in the red EML 810b.

[0729] The blue EML 850 in the second light emitting component 840 may include a blue host and a blue dopant. The blue dopant may each include at least one of a blue phosphorescent compound, a blue fluorescent compound, and a blue delayed fluorescent compound. The blue host may be the above-mentioned blue host material, and the blue dopant may be the above-mentioned blue dopant.

[0730] The blue host may have a greater wt % than the blue dopant in the blue EML 850. The blue dopant may be contained in an amount of 1 to 10 wt %, or 1 to 5 wt % based on the total weight of components in the blue EML 850.

[0731] The CGL 860 may be located between the first and second light emitting parts 830 and 840. For example, the first and second light emitting parts 830 and 840 may be connected through the CGL 860. The CGL 860 may be a PN junction CGL including an N-type CGL 862 and a P-type CGL 864.

[0732] In the CGL 860, an N-type CGL 862 may be located between the first HTL 832 and the second ETL 846. A P-type CGL 864 may be located between the N-type CGL 862 and the first HTL 832.

[0733] As described above, the OLED D of the present invention may include the first light emitting part 830 including the green EML 810a and the red EML 810b and the second light emitting part 840 including the blue EML 850, so that the OLED D may provide white light.

[0734] The green EML 810a includes the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, the driving voltage may be reduced, and the luminous efficiency and lifespan may be improved.

[0735] In addition, the green EML 810a may further include the compound represented by Formula 3 as a second host together with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0736] In addition, the green EML 810a may further include the compound represented by Formula 5 as a light emitting body together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, light emission efficiency, and light emission lifetime.

[0737] In addition, at least one of the first and second ETLs 834 and 846 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLEDD may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0738] Fig.10 A schematic cross-sectional view showing an OLED according to a ninth embodiment of the present invention.

[0739] like Fig.10 As shown, the organic light emitting layer 462 may include a first light emitting member 930 including a yellow-green EML 910 and a second light emitting member 940 including a first blue EML 950. In addition, the organic light emitting layer 462 may further include a CGL 960 between the first and second light emitting members 930 and 940.

[0740] The second light emitting part 940 may be located between the first electrode 460 and the first light emitting part 930. The first light emitting part 930 may be located between the CGL 960 and the second electrode 464, and the second light emitting part 940 may be located between the first electrode 460 and the CGL 960. For example, the second light emitting part 940, the CGL 960, and the first light emitting part 930 may be sequentially stacked on the first electrode 460.

[0741] Fig. 9 The first light emitting member 830 in the OLED D includes an EML having a double-layer structure, and Fig.10 The first light emitting part 930 in the OLED D includes an EML having a single-layer structure.

[0742] The first light emitting part 930 may further include a first ETL 934 disposed on the yellow-green EML 910 and a first HTL 932 disposed under the yellow-green EML 910 .

[0743] In addition, the first light emitting part 930 may further include an EIL 936 on or over the first EML 934 .

[0744] The first light emitting part 930 may further include a first EBL (not shown) between the first HTL 932 and the yellow-green EML 910 , and a first HBL (not shown) between the first ETL 934 and the yellow-green EML 910 .

[0745] The second light emitting part 940 may further include at least one of a second HTL 944 disposed under the first blue EML 950 and a second ETL 946 disposed on the first blue EML 950. In addition, the second light emitting part 940 may further include a HIL 942 between the first electrode 460 and the second HTL 944.

[0746] In addition, the second light emitting part 940 may further include a second EBL (not shown) between the second HTL 944 and the first blue EML 950 , and a second HBL (not shown) between the second ETL 946 and the first blue EML 950 .

[0747] The yellow-green EML 910 may include a first compound 912 of the organic compound of the present invention represented by Formula 1. In addition, the yellow-green EML 910 may further include a second compound 914 of the compound represented by Formula 3. In addition, the yellow-green EML 910 may further include a third compound 916 of the compound represented by Formula 6.

[0748] In the yellow-green EML 910, the first compound 912 may be an n-type host (eg, a first host), the second compound 914 may be a p-type host (eg, a second host), and the third compound 916 may be an emitting body (eg, a doping body). The thickness of the yellow-green EML 910 may be 50 to 100 μm.

[0749] In the yellow-green EML 910, the weight % of each of the first and second compounds 912 and 914 may be greater than the weight % of the third compound 916. The weight % of the first compound 912 and the weight % of the second compound 914 may be the same or different. In the yellow-green EML 910, the weight % of the first compound 912 and the second compound 914 may be 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:7. In some embodiments, the weight % of the first compound 912 and the weight % of the second compound 914 may be the same. For example, the weight % of the first compound 912 and the second compound 914 may be present at the same weight %, and the content of the third compound 916 in the yellow-green EML 910 may be 5 to 25 weight %.

[0750] The first and second ETLs 934 and 946 may each include at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9.

[0751] The blue EML 950 in the second light emitting part 940 may include a blue host and a blue dopant. The blue dopant may each include at least one of a blue phosphorescent compound, a blue fluorescent compound, and a blue delayed fluorescent compound. The blue host may be the above-mentioned blue host material, and the blue dopant may be the above-mentioned blue dopant.

[0752] The blue host may have a greater weight % than the blue dopant in the blue EML 950. The blue dopant may be included in an amount of 1 to 10 weight %, or 1 to 5 weight %, based on the total weight of components in the blue EML 950.

[0753] The CGL 960 may be located between the first and second light emitting parts 930 and 940. For example, the first and second light emitting parts 930 and 940 may be connected through the CGL 960. The CGL 960 may be a PN junction CGL including an N-type CGL 962 and a P-type CGL 964.

[0754] In the CGL 960, an N-type CGL 962 may be located between the first HTL 932 and the second ETL 946. A P-type CGL 964 may be located between the N-type CGL 962 and the first HTL 932.

[0755] As described above, the OLED D of the present invention may include the first light emitting part 930 including the yellow-green EML 910 and the second light emitting part 940 including the blue EML 950, so that the OLED D may provide white light.

[0756] The yellow-green EML 910 includes the organic compound of the present invention represented by Formula 1. As a result, in the OLED D, the driving voltage may be reduced, and the luminous efficiency and lifespan may be improved.

[0757] In addition, the yellow-green EML 910 may further include the compound represented by Formula 3 as a second host with the first host of the organic compound of the present invention, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0758] In addition, the yellow-green EML 910 may further include the compound represented by Formula 6 as a light emitter together with the first host represented by Formula 1 and the second host represented by Formula 3, so that the OLED D may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0759] In addition, at least one of the first and second ETLs 934 and 946 may include at least one of the first electron transport material represented by Formula 7, the second electron transport material represented by Formula 8, and the third electron transport material represented by Formula 9, so that the OLEDD may have improvements in aspects such as driving voltage, luminous efficiency, and luminous lifetime.

[0760] It will be apparent to those skilled in the art that various modifications and changes can be made in the embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, the modifications and changes are intended to cover the present invention as long as they are within the scope of the appended claims and their equivalents.

Claims

1. An organic compound represented by formula 1: [Formula 1] in, a1 is an integer from 0 to 5, a2 is an integer from 0 to 3, wherein each R1 is selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, wherein each R2 is selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, When a1 is 2 or more, the two or more R1 groups are the same or different. When a2 is 2 or more, the two or more R2 groups are the same or different. wherein L1, L2 and L3 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, Wherein, Ar1 is selected from Formula 1a-1 to Formula 1a-5: [Formula 1a-1] [Formula 1a-2] [Formula 1a-3] [Formula 1a-4] [Formula 1a-5] Wherein, in formula 1a-1, b1 is an integer from 0 to 5, Wherein, in formula 1a-2, b2 is an integer from 0 to 7, wherein, in each of formulae 1a-3 to 1a-5, b3 is each independently an integer from 0 to 4, Wherein, when b1, b2 and b3 are each 2 or more, the two or more R3 groups are the same or different, Wherein, in formula 1a-4, V1 is selected from O, S and C(R3)2, Wherein, in formula 1a-5, V1 is selected from O and S, wherein, in each of Formulae 1a-1 to 1a-5, R3 is each selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, Wherein, Ar2 is selected from Formula 1b-1 and Formula 1b-2, [Formula 1b-1] [Formula 1b-2] wherein, in each of formulae 1b-1 and 1b-2, b4 is an integer from 0 to 4, wherein R4 is each independently selected from the group consisting of deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, When b4 is 2 or more, two or more R4 groups are the same or different, and Wherein, in Formula 1b-2, R5 is selected from the group consisting of hydrogen, deuterium, a C1 to C10 alkyl group which may be substituted, and a C6 to C60 aryl group which may be substituted.

2. The organic compound according to claim 1, wherein Ar1 and Ar2 are different.

3. The organic compound according to claim 1, wherein Formula 1 is represented by Formula 1-5 or Formula 1-6: [Formula 1-5] [Formula 1-6] Wherein, in each of Formulas 1-5 and 1-6, a1, a2, R1, R2, L1, L3 and Ar1 are defined the same as in Formula 1, Wherein, in Formula 1-5, R4 and b4 are defined the same as in Formula 1b-1, and Wherein, in Formula 1-6, the definitions of R4, R5 and b4 are the same as those in Formula 1b-1.

4. The organic compound according to claim 1, wherein The organic compound is one of the compounds of Formula 2: [Formula 2] 5. An organic light-emitting device, comprising: substrate; and an organic light emitting diode located on the substrate and comprising a first electrode; a second electrode facing the first electrode; and a first light emitting component between the first electrode and the second electrode, wherein the first light emitting component comprises a first light emitting material layer, in, The first light emitting material layer comprises a first compound which is an organic compound as claimed in any one of the preceding claims.

6. The organic light-emitting device according to claim 5, wherein: The first light-emitting material layer further comprises a second compound represented by Formula 3: [Formula 3] wherein c1 and c4 are each independently an integer from 0 to 4, c2 and c3 are each independently an integer from 0 to 3, Where R 11 , R 12 , R 13 and R 14 each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, Where L 11 and L 12 are each independently selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, and Among them, Ar 11 and Ar 12 Each is independently selected from the group consisting of a substituted or unsubstituted C6 to C60 aryl group and a substituted or unsubstituted C3 to C60 heteroaryl group.

7. The organic light-emitting device according to claim 6, wherein: The second compound is one of the compounds of Formula 4: [Formula 4] 8. The organic light-emitting device according to claim 6 or 7, wherein: The first light emitting material layer further comprises a third compound which is one of the compounds in Formula 5: [Formula 5] 9. The organic light-emitting device according to claim 6 or 7, wherein: The first light emitting material layer further comprises a third compound which is one of the compounds in Formula 6: [Formula 6] 10. The organic light emitting device according to claim 9, wherein: The weight % of each of the first compound and the second compound is greater than the weight % of the third compound.

11. The organic light-emitting device according to any one of claims 8 to 10, wherein: The ratio of the weight % of the first compound to the weight % of the second compound is 1:9 to 9:1, 2:8 to 8:2, or 7:3 to 3:

7.

12. The organic light-emitting device according to any one of claims 8 to 10, wherein: The weight % of the first compound is the same as the weight % of the second compound.

13. The organic light-emitting device according to any one of claims 9 to 12, wherein: The third compound is present in the first light emitting material layer in an amount of 5 to 25 wt % based on the total weight of components in the first light emitting material layer.

14. The organic light-emitting device according to any one of claims 5 to 13, wherein: The first light-emitting component further comprises a first electron transport layer between the first light-emitting material layer and the second electrode, The first electron transport layer comprises at least one of a first electron transport material represented by Formula 7, a second electron transport material represented by Formula 8, and a third electron transport material represented by Formula 9: [Formula 7] Wherein, in Formula 7: L 21 is selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group, Ar 21 is represented by Formula 7a or Formula 7b, and Ar 22 and Ar 23 each independently selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, [Formula 7a] [Formula 7b] Wherein, in Formula 7a: d1 is an integer from 0 to 4, R 21 is selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl, and substituted or unsubstituted C3 to C60 heteroaryl, R 22 each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, Wherein, in Formula 7b: d2 is an integer from 0 to 4, R 23 is selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl, and substituted or unsubstituted C3 to C60 heteroaryl, R 24 each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, [Formula 8] Wherein, in formula 8: e1, e2, e3 and e4 are each independently an integer from 0 to 4, e5 is 0 or 1, R 31 , R 32 , R 33 and R 34 each independently selected from the group consisting of deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, X1, X2 and X3 are each independently N or CR 35 , wherein at least two of X1, X2 and X3 are N, R 35 each independently selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C1 to C10 alkoxy, substituted or unsubstituted C6 to C60 aryl and substituted or unsubstituted C3 to C60 heteroaryl, Ar 31 and Ar 32 are each independently selected from the group consisting of a substituted or unsubstituted C6 to C60 aryl group and a substituted or unsubstituted C3 to C60 heteroaryl group, and L 31 is selected from the group consisting of a substituted or unsubstituted C6 to C60 arylene group and a substituted or unsubstituted C3 to C60 heteroarylene group, [Formula 9] Among them, in formula 9: f1, f2 and f3 are each independently an integer from 0 to 4, f4 is an integer from 0 to 3, R 41 , R 42 , R 43 and R 44 each independently selected from the group consisting of a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, X 11 O, S or NR 45 , R 45 is a C6 to C60 aryl group which may have a substituent or an unsubstituted group and forms a ring with one of the adjacent benzene rings, X 12 , X 13 and X 14 Each independently is N or CR 46 , where X 12 , X 13 and X 14 At least two of them are N, Ar 41 and Ar 42 , R 46 are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted C6 to C60 aryl group, and a substituted or unsubstituted C3 to C60 heteroaryl group, and L 41 Selected from the group consisting of a single bond, a substituted or unsubstituted C6 to C60 arylene group, and a substituted or unsubstituted C3 to C60 heteroarylene group.

15. The organic light emitting device according to claim 14, wherein: The first electron transport material is one of the compounds of Formula 10: [Formula 10] 16. The organic light-emitting device according to claim 14 or 15, wherein: The second electron transport material is one of the compounds of formula 11: [Formula 11] 17. The organic light-emitting device according to any one of claims 14 to 16, wherein: The third electron transport material is one of the compounds of Formula 12: [Formula 12] 18. The organic light-emitting device according to any one of claims 5 to 17, wherein: The organic light emitting diode further comprises: a second light-emitting component including a second light-emitting material layer and located between the first light-emitting component and the second electrode, Wherein, the second light-emitting material layer contains the first compound.

19. The organic light-emitting device according to any one of claims 5 to 17, wherein: The organic light emitting diode further comprises: A second light emitting component includes a first blue light emitting material layer and is located between the first electrode and the first light emitting component.

20. The organic light emitting device according to claim 19, wherein: The first light emitting component further includes a red light emitting material layer between the second light emitting component and the first light emitting material layer.

21. The organic light emitting device according to claim 20, wherein: The first light-emitting component further includes a yellow-green light-emitting material layer between the first light-emitting material layer and the red light-emitting material layer.

22. The organic light-emitting device according to any one of claims 5 to 17, wherein: The organic light emitting diode further comprises: A third light emitting component includes a second blue light emitting material layer and is located between the first light emitting component and the second electrode.

23. The organic light emitting device according to claim 22, wherein: The first light-emitting component further includes a red light-emitting material layer between the third light-emitting component and the first light-emitting material layer.

24. The organic light emitting device according to claim 23, wherein: The first light-emitting component further includes a yellow-green light-emitting material layer between the first light-emitting material layer and the red light-emitting material layer.

25. The organic light-emitting device according to any one of claims 5 to 24, further comprising: A color filter layer corresponding to a red pixel region, a green pixel region, and a blue pixel region.

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