阅读说明：本技术 有机发光装置 (Organic light emitting device ) 是由 尹丞希 金相范 宋寅范 枝连一志 笹田康幸 于 2021-05-28 设计创作，主要内容包括：本公开涉及有机发光装置,所述有机发光装置包括：基板和有机发光二极管,所述有机发光二极管定位在基板上并且包括第一电极、面向第一电极的第二电极、包含蒽衍生物的第一主体和硼衍生物的第一掺杂剂并且定位在第一电极与第二电极之间的第一发光材料层、和包含胺衍生物的电子阻挡材料并且定位在第一电极与第一发光材料层之间的电子阻挡层,其中第一主体的蒽核是氘化的。(The present disclosure relates to an organic light emitting device including: a substrate, and an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, a first luminescent material layer containing a first host of an anthracene derivative and a first dopant of a boron derivative and positioned between the first electrode and the second electrode, and an electron blocking layer containing an electron blocking material of an amine derivative and positioned between the first electrode and the first luminescent material layer, wherein an anthracene nucleus of the first host is deuterated.)

1. An organic light emitting device comprising:

a substrate; and

an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, a first luminescent material layer containing a first host of an anthracene derivative and a first dopant of a boron derivative and positioned between the first electrode and the second electrode, and an electron blocking layer containing an electron blocking material and positioned between the first electrode and the first luminescent material layer,

wherein the anthracene nucleus of the first host is deuterated, and the first dopant is represented by formula 3:

[ formula 3]

Wherein in formula 3, R₁₁To R₁₄Each of (1), R₂₁To R₂₄Each of (1), R₃₁To R₃₅Each of (1) and R₄₁To R₄₅Each selected from hydrogen, deuterium, C1 to C10 alkyl, C6 to C30 aryl, C6 to C30 arylamino and C5 to C30 heteroaryl,

wherein R is₅₁Selected from unsubstituted or deuterated and C₁To C₁₀C12 to C30 arylamino substituted with at least one of alkyl and unsubstituted or deuterated C5 to C30 heteroAn aryl group, a heteroaryl group,

wherein the electron blocking material is represented by formula 5:

[ formula 5]

Wherein in formula 5, R₁、R₂And R₄Each independently selected from monocyclic aryl or polycyclic aryl, R₃Is a monocyclic arylene or polycyclic arylene group, and R₁、R₂、R₃And R₄At least one of which is polycyclic.

2. The organic light-emitting device of claim 1, wherein the first dopant is a compound that is one of the following formulas 4:

[ formula 4]

3. The organic light emitting device according to claim 1, wherein the first host is represented by formula 1:

[ formula 1]

Wherein R is₁And R₂Each independently a C6 to C30 aryl or C5 to C30 heteroaryl,

wherein L is₁And L₂Each independently a C6 to C30 arylene group, and

wherein x is an integer of 1 to 8, and y1 and y2 are each an integer of 0 or 1.

4. The organic light-emitting device according to claim 3, wherein the first host is a compound that is one of the following formula 2:

[ formula 2]

5. The organic light-emitting device of claim 1, wherein the electron blocking material is a compound that is one of the following formula 6:

[ formula 6]

6. The organic light-emitting device according to claim 1, wherein the organic light-emitting diode further comprises a hole blocking layer containing a hole blocking material and positioned between the second electrode and the first light-emitting material layer,

wherein the hole blocking material is represented by formula 7:

[ formula 7]

Wherein Y is₁To Y₅Each independently is CR₁Or N, and Y₁To Y₅One to three of them are N,

wherein R is₁Independently is hydrogen or a C6 to C30 aryl group, and L is C₆To C₃₀An arylene group, a cyclic or cyclic alkylene group,

wherein R is₂Is C6 to C50 aryl or C5 to C50 heteroaryl, and R₃Is C1 to C10 alkyl, or R₃Wherein adjacent two form a condensed ring, and

wherein "a" is 0 or 1, "b" is 1 or 2, and "c" is an integer of 0 to 4.

7. The organic light-emitting device according to claim 6, wherein the hole-blocking material is a compound that is one of the following formula 8:

[ formula 8]

8. The organic light-emitting device according to claim 1, wherein the organic light-emitting diode further comprises a hole blocking layer containing a hole blocking material and positioned between the second electrode and the first light-emitting material layer,

wherein the hole blocking material is represented by formula 9:

[ formula 9]

Wherein Ar is C₁₀To C₃₀Arylene radicals, and

wherein R is₈₁Is a C6 to C30 aryl group unsubstituted or substituted with a C1 to C10 alkyl group or a C5 to C30 heteroaryl group unsubstituted or substituted with a C1 to C10 alkyl group, and R₈₂And R₈₃Each independently hydrogen, C1 to C10 alkyl, or C6 to C30 aryl.

9. The organic light-emitting device according to claim 8, wherein the hole-blocking material is a compound that is one of the following formula 10:

[ formula 10]

10. The organic light emitting device of claim 1, wherein the organic light emitting diode further comprises:

a second light emitting material layer including a second host of an anthracene derivative and a second dopant of a boron derivative and positioned between the first light emitting material layer and the second electrode; and

a first charge generation layer between the first light emitting material layer and the second light emitting material layer.

11. The organic light-emitting device of claim 10, wherein the anthracene nucleus of the second host is deuterated.

12. The organic light emitting device of claim 1, wherein the organic light emitting diode further comprises:

a second luminescent material layer that emits blue light and is positioned between the first luminescent material layer and the second electrode; and

a first charge generation layer between the first light emitting material layer and the second light emitting material layer.

13. The organic light-emitting device according to claim 1, wherein a red pixel, a green pixel, and a blue pixel are defined on the substrate, and the organic light-emitting diode corresponds to each of the red pixel, the green pixel, and the blue pixel, and

wherein the organic light emitting device further comprises:

a color conversion layer disposed between the substrate and the organic light emitting diode or disposed on the organic light emitting diode and corresponding to the red and green pixels.

14. The organic light emitting device of claim 10, wherein the organic light emitting diode further comprises:

a third light emitting material layer emitting yellow-green light and positioned between the first charge generation layer and the second light emitting material layer; and

a second charge generation layer between the second light emitting material layer and the third light emitting material layer.

15. The organic light emitting device of claim 10, wherein the organic light emitting diode further comprises:

a third light emitting material layer that emits red light and green light and is positioned between the first charge generation layer and the second light emitting material layer; and

a second charge generation layer between the second light emitting material layer and the third light emitting material layer.

16. The organic light emitting device of claim 10, wherein the organic light emitting diode further comprises:

a third layer of luminescent material comprising a first layer and a second layer and positioned between the first charge generation layer and the second layer of luminescent material, wherein the first layer emits red light and the second layer emits yellowish green light; and

a second charge generation layer between the second light emitting material layer and the third light emitting material layer.

17. The organic light-emitting device according to claim 16, wherein the third light-emitting material layer further comprises a third layer that emits green light.

18. The organic light emitting device of claim 1, wherein the organic light emitting diode further comprises:

a second layer of light emitting material emitting yellow-green light and positioned between the first layer of light emitting material and the second electrode; and

a first charge generation layer between the first light emitting material layer and the second light emitting material layer.

19. The organic light-emitting device according to claim 14, wherein a red pixel, a green pixel, and a blue pixel are defined on the substrate, and the organic light-emitting diode corresponds to each of the red pixel, the green pixel, and the blue pixel, and

wherein the organic light emitting device further comprises:

a color filter layer disposed between the substrate and the organic light emitting diode or disposed on the organic light emitting diode and corresponding to the red, green, and blue pixels.

20. The organic light-emitting device of claim 1, wherein the remainder of the first host other than the anthracene nucleus is non-deuterated.

Technical Field

The present disclosure relates to an organic light emitting device, and more particularly, to an Organic Light Emitting Diode (OLED) having improved light emitting efficiency and life span and an organic light emitting device including the same.

Background

As the demand for flat panel display devices having a small footprint increases, organic light emitting display devices including OLEDs have been the subject of recent research and development.

The OLED emits light by: electrons from a cathode as an electron injection electrode and holes from an anode as a hole injection electrode are injected into a light Emitting Material Layer (EML), the electrons and the holes are combined, excitons are generated, and the excitons are shifted from an excited state to a ground state. A flexible substrate such as a plastic substrate can be used as a base substrate in which elements are formed. In addition, the organic light emitting display device may be operated at a lower voltage (e.g., 10V or less) than a voltage required to operate other display devices. In addition, the organic light emitting display device has advantages in power consumption and color perception.

The OLED includes: a first electrode as an anode over the substrate, a second electrode spaced apart from and facing the first electrode, and an organic light emitting layer therebetween.

For example, the organic light emitting display device may include a red pixel region, a green pixel region, and a blue pixel region, and the OLED may be formed in each of the red pixel region, the green pixel region, and the blue pixel region.

However, the OLED in the blue pixel cannot provide sufficient light emitting efficiency and life, so that the organic light emitting display device has limitations in light emitting efficiency and life.

Disclosure of Invention

The present disclosure is directed to an OLED and an organic light emitting device including the same that substantially obviate one or more problems associated with limitations and disadvantages of the related conventional art.

Additional features and advantages of the disclosure are set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the disclosure will be realized and attained by the features particularly pointed out in the written description and drawings.

To achieve these and other advantages and in accordance with the purpose of embodiments of the present disclosure as described herein, one aspect of the present disclosure is an organic light emitting device including: a substrate and an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, a first luminescent material layer containing a first host of an anthracene derivative and a first dopant of a boron derivative and positioned between the first electrode and the second electrode, and an electron blocking layer containing an electron blocking material and positioned between the first electrode and the first luminescent material layer, wherein the anthracene nucleus of the first host is deuterated, and the first dopant is represented by formula 3: [ formula 3]]In formula 3, R₁₁To R₁₄Each of (1), R₂₁To R₂₄Each of (1), R₃₁To R₃₅Each of (1) and R₄₁To R₄₅Is selected from hydrogen, deuterium (D), C1 to C10 alkyl, C6 to C30 aryl, C6 to C30 arylamino and C5 to C30 heteroaryl, and wherein R is₅₁Selected from unsubstituted or deuterated and C₁To C₁₀A C12 to C30 arylamino group substituted with at least one of alkyl groups and an unsubstituted or deuterated C5 to C30 heteroaryl group, wherein the electron blocking material is represented by formula 5: [ formula 5]]Wherein in formula 5, R₁、R₂And R₄Each independently selected from monocyclic aryl or polycyclic aryl, R₃Is a monocyclic arylene or polycyclic arylene group, and R₁、R₂、R₃And R₄At least one of which is polycyclic.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to further illustrate the present disclosure as claimed.

Drawings

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

Fig. 1 is a schematic circuit diagram illustrating an organic light emitting display device of the present disclosure.

Fig. 2 is a schematic cross-sectional view illustrating an organic light emitting display device according to a first embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional view illustrating an OLED having a single light emitting part for an organic light emitting display device according to a first embodiment of the present disclosure.

Fig. 4 is a schematic cross-sectional view illustrating an OLED having a series structure of two light emitting parts according to a first embodiment of the present disclosure.

Fig. 5 is a schematic cross-sectional view illustrating an organic light emitting display device according to a second embodiment of the present disclosure.

Fig. 6 is a schematic cross-sectional view illustrating an OLED having a series structure of two light emitting parts according to a second embodiment of the present disclosure.

Fig. 7 is a schematic cross-sectional view illustrating an OLED having a series structure of three light emitting parts according to a second embodiment of the present disclosure.

Fig. 8 is a schematic cross-sectional view illustrating an organic light emitting display device according to a third embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to some of the examples and preferred embodiments illustrated in the accompanying drawings.

Fig. 1 is a schematic circuit diagram illustrating an organic light emitting display device of the present disclosure.

As shown in fig. 1, gate lines GL and data lines DL crossing each other to define pixels (pixel regions) P and power lines PL are formed in the organic light emitting display device. A switching Thin Film Transistor (TFT) Ts, a driving TFT Td, a storage capacitor Cst, and an OLED D are formed in the pixel region P. The pixel region P may include red, green, and blue pixels.

The switching thin film transistor Ts is connected to the gate line GL and the data line DL, and the driving thin film transistor Td and the storage capacitor Cst are connected between the switching thin film transistor Ts and the power line PL. The OLED D is 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 is applied to the gate electrode of the driving thin film transistor Td and one electrode of the storage capacitor Cst through the switching thin film transistor Ts.

The driving thin film transistor Td is turned on by a data signal applied into the gate electrode, so that a current proportional to the data signal is supplied from the power line PL to the OLED D through the driving thin film transistor Td. The OLED D emits light having luminance proportional to the current flowing through the driving thin film transistor Td. In this case, the storage capacitor Cst is charged with a voltage proportional to the data signal, so that the voltage of the gate electrode in the driving thin film transistor Td is kept constant during one frame. Accordingly, the organic light emitting display device may display a desired image.

Fig. 2 is a schematic cross-sectional view illustrating an organic light emitting display device according to a first embodiment of the present disclosure.

As shown in fig. 2, the organic light emitting display device 100 includes a substrate 110, a TFT Tr, and an OLED D connected to the TFT Tr. For example, the organic light emitting display device 100 may include red, green, and blue pixels, and the OLED D may be formed in each of the red, green, and blue pixels. That is, the OLEDs D emitting red, green, and blue light may be disposed in the red, green, and blue pixels, respectively.

The substrate 110 may be a glass substrate or a plastic substrate. For example, the substrate 110 may be a polyimide substrate.

A buffer layer 120 is formed on the substrate, and a TFT Tr is formed on the buffer layer 120. The buffer layer 120 may be omitted.

A semiconductor layer 122 is formed on the buffer layer 120. The semiconductor layer 122 may include an oxide semiconductor material or polysilicon.

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 reaching the semiconductor layer 122 is shielded or blocked by the light blocking pattern, so that thermal degradation of the semiconductor layer 122 can be prevented. On the other hand, when the semiconductor layer 122 includes polycrystalline silicon, impurities may be doped in both sides of the semiconductor layer 122.

A gate insulating layer 124 is 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.

A gate electrode 130 formed of a conductive material such as metal is formed on the gate insulating layer 124 corresponding to the center of the semiconductor layer 122.

In fig. 2, a gate insulating layer 124 is formed on the entire surface of the substrate 110. Alternatively, the gate insulating layer 124 may be patterned to have the same shape as the gate electrode 130.

An interlayer insulating layer 132 formed of an insulating material is 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 photo-acryl.

The interlayer insulating layer 132 includes a first contact hole 134 and a second contact hole 136 exposing both sides of the semiconductor layer 122. The first contact hole 134 and the second contact hole 136 are positioned at both sides of the gate electrode 130 to be spaced apart from the gate electrode 130.

The first and second contact holes 134 and 136 are formed through the gate insulating layer 124. Alternatively, when the gate insulating layer 124 is patterned to have the same shape as the gate electrode 130, the first and second contact holes 134 and 136 are formed to pass through only the interlayer insulating layer 132.

A source electrode 140 and a drain electrode 142 formed of a conductive material such as metal are formed on the interlayer insulating layer 132.

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

The semiconductor layer 122, the gate electrode 130, the source electrode 140, and the drain electrode 142 constitute a TFT Tr. The TFT Tr serves as a driving element. That is, the TFT Tr may correspond to the driving TFT Td (of fig. 1).

In the TFT Tr, the gate electrode 130, the source electrode 140, and the drain electrode 142 are positioned over the semiconductor layer 122. That is, the TFT Tr has a coplanar structure.

Alternatively, in the TFT Tr, the gate electrode may be positioned below the semiconductor layer, and the source and drain electrodes may be positioned above the semiconductor layer, so that the TFT Tr may have an inverted staggered structure. In this case, the semiconductor layer may include amorphous silicon.

Although not shown, gate lines and data lines cross each other to define pixels, and switching TFTs are formed to be connected to the gate lines and the data lines. The switching TFT is connected to the TFT Tr as a driving element.

Further, a power supply line, which may be formed in parallel with and spaced apart from one of the gate line and the data line, and a storage capacitor for holding a voltage of the gate electrode of the TFT Tr in one frame may also be formed.

A passivation layer 150 is formed to cover the TFT Tr, and the passivation layer 150 includes a drain contact hole 152 exposing the drain electrode 142 of the TFT Tr.

A first electrode 160 is formed in each pixel, and the first electrode 160 is connected to the drain electrode 142 of the TFT Tr through the drain contact hole 152. The first electrode 160 may be an anode and may be formed of a conductive material having a relatively high work function. For example, the first electrode 160 may be formed of a transparent conductive material such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).

When the OLED device 100 operates in a top emission type, a reflective electrode or a reflective layer may be formed under the first electrode 160. For example, the reflective electrode or the reflective layer may be formed of an aluminum-palladium-copper (APC) alloy.

A bank layer 166 is formed on the passivation layer 150 to cover an edge of the first electrode 160. That is, the bank layer 166 is positioned at the boundary of the pixel and exposes the center of the first electrode 160 in the pixel.

An organic light emitting layer 162 is formed on the first electrode 160. The organic light emitting layer 162 may have a single-layer structure of a light emitting material layer including a light emitting material. In order to improve the light emitting efficiency of the OLED D and/or the organic light emitting display device 100, the organic light emitting layer 162 may have a multi-layer structure.

The organic light emitting layer 162 is separated in each of the red, green, and blue pixels. As shown below, the organic light emitting layer 162 in the blue pixel includes: a light Emitting Material Layer (EML) including a host of an anthracene derivative (anthracene compound) whose nucleus is deuterated and a dopant of a boron derivative (boron compound); and an Electron Blocking Layer (EBL) comprising an amine derivative. Therefore, the light emitting efficiency and the lifetime of the OLED D in the blue pixel are improved.

In addition, the organic light emitting layer 162 may further include a Hole Blocking Layer (HBL) including at least one of a hole blocking material of an azine derivative and a hole blocking material of a benzimidazole derivative. Therefore, the luminous efficiency and lifetime of the OLED D are further improved.

A second electrode 164 is formed over the substrate 110 on which the organic light emitting layer 162 is formed. The second electrode 164 covers the entire surface of the display region and may be formed of a conductive material having a relatively low work function to serve as a cathode. For example, the second electrode 164 may be formed of aluminum (Al), magnesium (Mg), or Al — Mg alloy.

The first electrode 160, the organic light emitting layer 162, and the second electrode 164 constitute the OLED D.

An encapsulation film 170 is formed on the second electrode 164 to prevent moisture from penetrating into the OLED D. The encapsulation film 170 includes a first inorganic insulating layer 172, an organic insulating layer 174, and a second inorganic insulating layer 176, which are sequentially stacked, but is not limited thereto. The encapsulation film 170 may be omitted.

A polarizing plate (not shown) for reducing reflection of ambient light may be disposed over the top-emitting OLED D. For example, the polarizing plate may be a circular polarizing plate.

In addition, a cover window (not shown) may be attached to the encapsulation film 170 or the polarizing plate. In this case, the substrate 110 and the cover window have flexible characteristics so that a flexible display device can be provided.

Fig. 3 is a schematic cross-sectional view illustrating an OLED having a single light emitting part for an organic light emitting display device according to a first embodiment of the present disclosure.

As shown in fig. 3, the OLED D includes a first electrode 160 and a second electrode 164 facing each other with an organic light emitting layer 162 therebetween. The organic emission layer 162 includes an EML 240 between the first electrode 160 and the second electrode 164, an EBL 230 between the first electrode 160 and the EML 240, and an HBL250 between the EML 240 and the second electrode 164.

The first electrode 160 may be formed of a conductive material having a relatively high work function to serve as an anode. The second electrode 164 may be formed of a conductive material having a relatively low work function to serve as a cathode.

In addition, the organic light emitting layer 162 may further include a Hole Transport Layer (HTL)220 between the first electrode 160 and the EBL 230.

In addition, the organic light emitting layer 162 may further include a Hole Injection Layer (HIL)210 between the first electrode 160 and the HTL 220 and an Electron Injection Layer (EIL)260 between the second electrode 164 and the HBL 250.

In the OLED D of the present disclosure, the HBL250 may include at least one of a hole blocking material of an azine derivative and a hole blocking material of a benzimidazole derivative. The hole blocking material has an electron transport property so that the electron transport layer can be omitted. HBL250 directly contacts EIL 260. Alternatively, the HBL may directly contact the second electrode without the EIL 260. However, an electron transport layer may be formed between the HBL250 and the EIL 260.

The EML 240 of the organic light emitting layer 162 includes a host 242 of an anthracene derivative and a dopant 244 of a boron derivative and provides blue light emission. In this case, the nucleus of the anthracene derivative is deuterated. In addition, some or all of the hydrogens in the boron derivative may be deuterated.

That is, in EML 240, the anthracene nucleus of host 242 is deuterated. The dopant 244 may not be deuterated or may be partially or fully deuterated.

The host 242 of deuterated anthracene derivative can be represented by formula 1:

[ formula 1]

In formula 1, R₁And R₂Each may independently be C₆To C₃₀Aryl or C₅To C₃₀Heteroaryl, and R₁And R₂May be the same or different. L is₁And L₂Each may independently be C₆To C₃₀Arylene radical, and L₁And L₂May be the same or different. Further, x is an integer of 1 to 8, and y1 and y2 are each an integer of 0 or 1.

That is, the anthracene moiety that is the nucleus of the host 242 is substituted with deuterium (D), while the substituents other than the anthracene moiety are not deuterated.

For example, R₁And R₂Can be selected from phenyl, naphthyl, fluorenyl, pyridyl, quinolyl, dibenzofuranyl, dibenzothienyl, phenanthryl, carbazolyl and carbolinyl, and L₁And L₂May be selected from phenylene and naphthylene. Further, x may be 8.

In an exemplary embodiment, the body 242 may be a compound that is one of the following formula 2:

[ formula 2]

The boron derivative dopant 244 may be represented by formula 3:

[ formula 3]

In formula 3, R₁₁To R₁₄Each of (1), R₂₁To R₂₄Each of (1), R₃₁To R₃₅Each of (1) and R₄₁To R₄₅May be selected from hydrogen, deuterium (D), C1 to C10 alkyl, C6 to C30 aryl, C6 to C30 arylamino and C5 to C30 heteroaryl, and R₁₁To R₁₄Each of (1), R₂₁To R₂₄Each of (1), R₃₁To R₃₅Each of (1) and R₄₁To R₄₅Each of which may be the same or different. R₅₁May be selected from unsubstituted or deuterated and C₁To C₁₀A C12 to C30 arylamino group substituted with at least one of an alkyl group and an unsubstituted or deuterated C5 to C30 heteroaryl group.

In the boron derivative as the dopant 244, the benzene ring bonded to the boron atom and two nitrogen atoms is unsubstituted or is deuterated and C₁To C₁₀One of a C12 to C30 arylamino group substituted with at least one of an alkyl group and an unsubstituted or deuterated C5 to C30 heteroaryl group is substituted, so that the light emitting characteristics of the OLED D including the dopant 244 are improved.

For example, the C1 to C10 alkyl group may be one of methyl, ethyl, propyl, butyl, and pentyl (pentyl). The aryl group may be one of phenyl and naphthyl and may be substituted with deuterium or C1 to C10 alkyl. The C12 to C30 arylamino group may be one of diphenylamino, phenyl-naphthylamino and dinaphthylamino, and the C5 to C30 heteroaryl group may be one of pyridyl, quinolyl, carbazolyl, dibenzofuranyl and dibenzothienyl. Arylamino, aryl, alkyl, and heteroaryl groups can be deuterated.

More specifically, R₁₁To R₁₄Each of (1), R₂₁To R₂₄Each of (1), R₃₁To R₃₅Each of (1)One and R₄₁To R₄₅Each of which may be selected from hydrogen, deuterium, methyl, ethyl, propyl, butyl and pentyl (pentyl), and R₅₁May be selected from unsubstituted or deuterated diphenylamino, unsubstituted or deuterated phenyl-biphenylamino, unsubstituted or deuterated phenyl-naphthylamino, unsubstituted or deuterated dinaphthylamino and unsubstituted or deuterated carbazolyl.

In one embodiment, R₁₁To R₁₄One of (1), R₂₁To R₂₄One of (1), R₃₁To R₃₅One of (1) and R₄₁To R₄₅One of which may be t-butyl or t-amyl (t-amyl), and R₁₁To R₁₄The remainder of (1), R₂₁To R₂₄The remainder of (1), R₃₁To R₃₅The remainder of (1) and R₄₁To R₄₅The remainder of (A) may be hydrogen or deuterium, and R₅₁May be a deuterated diphenylamino group. The OLED D includes the compound as a dopant, and the luminous efficiency and color purity of the OLED D are improved.

The dopant 244 of formula 3 may be a compound that is one of the following formula 4:

[ formula 4]

In the OLED D of the present disclosure, the weight% of the host 242 may be about 70 to 99.9, and the weight% of the dopant 244 may be about 0.1 to 30. In order to provide sufficient luminous efficiency and lifetime of the OLED D and the organic light emitting display device, the weight% of the dopant 244 may be about 0.1 to 10, preferably about 1 to 5.

The HIL210 is positioned between the first electrode 160 and the HTL 220 to improve interface characteristics between the first electrode 160 formed of an inorganic material and the HTL 220 formed of an organic material. The HIL210 contains a hole injection material. For example, the hole injection material may include at least one of: 4,4 '-tris (3-methylphenylamino) triphenylamine (MTDATA), 4' -tris (N, N-diphenyl-amino) triphenylamine (NATA), 4 '-tris (N- (naphthalen-1-yl) -N-phenyl-amino) triphenylamine (1T-NATA), 4' -tris (N- (naphthalen-2-yl) -N-phenyl-amino) triphenylamine (2T-NATA), copper phthalocyanine (CuPc), tris (4-carbazolyl-9-yl-phenyl) amine (TCTA), N '-diphenyl-N, N' -bis (1-naphthyl) -1,1 '-biphenyl-4, 4' -diamine (NPB or NPD), 1,4,5,8,9, 11-hexaazatriphenylene hexacarbonitrile (HAT-CN), 1,3, 5-tris [4- (diphenylamino) phenyl ] benzene (TDAPB), poly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, and compounds of formula 12.

[ formula 12]

Alternatively, the HIL210 may include a hole transport material described below and the above hole injection material as a dopant. In this case, the hole injection material may be doped at about 1 to 50, preferably about 1 to 30% by weight. The HIL210 may be omitted according to characteristics or features of the OLED.

The HTL 220 is positioned between the HIL210 and the EBL 230. The HTL 220 includes a hole transport material. For example, the hole transport material may include at least one of: n, N ' -diphenyl-N, N ' -bis (3-methylphenyl) -1,1 ' -biphenyl-4, 4' -diamine (TPD), NPB (or NPD), 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-sec-butylphenyl) diphenylamine)) ] (TFB), bis- [4- (N, N-di-p-tolyl-amino) -phenyl ] cyclohexane (TAPC), 3, 5-bis (9H-carbazol-9-yl) -N, N-diphenylaniline (DCDPA), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, N- (biphenyl-4-yl) -N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) biphenyl-4-amine, N- ([1, 1' -biphenyl ] -4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine -an amine, N4, N4, N4 ', N4 ' -tetrakis ([1,1 ' -biphenyl ] -4-yl) - [1,1 ' -biphenyl ] -4,4' -diamine, and a compound of formula 11.

[ formula 11]

The EBL 230 is formed to prevent electrons from being directed toward the first electrode 160. EBL 230 comprises an electron blocking material of an amine derivative. The electron blocking material is represented by formula 5:

[ formula 5]

In formula 5, R₁、R₂And R₄Each independently selected from monocyclic aryl or polycyclic aryl, R₃Is a monocyclic arylene or polycyclic arylene group, and R₁、R₂、R₃And R₄At least one of which is polycyclic. For example, R₁、R₂、R₃And R₄At least two of which may be polycyclic. The monocyclic aryl group can be phenyl and the polycyclic aryl group can be a C10 to C13 fused aryl group. The monocyclic arylene group can be phenylene and the polycyclic arylene group can be a C10 to C13 fused arylene group. The polycyclic aryl group may be an aryl group in which at least two phenyl groups are fused and may include a phenyl group, an anthryl group, a phenanthryl group, and a pyrenyl group. The polycyclic arylene group may be an arylene group in which at least two phenylene groups are fused and may include a phenylene group, an anthracenylene group, a phenanthrenylene group, and a pyrenylene group.

The electron blocking material of formula 5 may be one of the following formula 6:

[ formula 6]

The HBL250 is formed to prevent holes from heading toward the second electrode 164. HBL250 comprises a hole blocking material of azine derivatives. An azine derivative as a hole blocking material is represented by formula 7:

[ formula 7]

In formula 7, Y₁To Y₅Each independently is CR₁Or N, and Y₁To Y₅One to three of which are N. R₁Independently hydrogen or a C6 to C30 aryl group. L is C₆To C₃₀Arylene, and R₂Is a C6 to C50 aryl or C5 to C50 heteroaryl. R₃Is C1 to C10 alkyl, or R₃Form a fused ring. "a" is 0 or 1, "b" is 1 or 2, and "c" is an integer from 0 to 4.

The hole blocking material of formula 7 may be one of the following formula 8:

[ formula 8]

Alternatively, the HBL250 may contain a benzimidazole derivative as a hole blocking material. For example, a benzimidazole derivative as a hole blocking material is represented by formula 9:

[ formula 9]

In formula 9, Ar is C₁₀To C₃₀Arylene radical, R₈₁Is a C6 to C30 aryl group unsubstituted or substituted with a C1 to C10 alkyl group or a C5 to C30 heteroaryl group unsubstituted or substituted with a C1 to C10 alkyl group, and R₈₂And R₈₃Each independently hydrogen, C1 to C10 alkyl, or C6 to C30 aryl.

For example, Ar may be naphthylene or anthracenylene, R₈₁May be benzimidazolyl or phenyl, R₈₂May be methyl, ethyl or phenyl, and R₈₃And may be hydrogen, methyl or phenyl.

The hole blocking material of formula 9 may be one of the following formulae 10:

[ formula 10]

The hole blocking materials in formulas 7 to 10 have excellent hole blocking characteristics and excellent electron transporting characteristics. Thus, the HBL250 may function as a hole blocking layer as well as an electron transport layer.

On the other hand, the OLED D may further include an electron transport layer (not shown) between the HBL250 and the EIL 260.

The electron transport layer comprises an electron transport material. For example, the electron transport material may include at least one of: tris- (8-hydroxyquinolinylaluminum) (Alq3), 2-biphenyl-4-yl-5- (4-tert-butylphenyl) -1,3,4-Oxadiazole (PBD), spiro-PBD, lithium quinolinate (Liq), 1,3, 5-tris (N-phenylbenzimidazol-2-yl) benzene (TPBi), bis (2-methyl-8-hydroxyquinoline-N1, O8) - (1, 1' -biphenyl-4-yl) aluminum (BALq), 4, 7-diphenyl-1, 10-phenanthroline (Bphen), 2, 9-bis (naphthalen-2-yl) 4, 7-diphenyl-1, 10-phenanthroline (NBphen), 2, 9-dimethyl-4, 7-diphenyl-1, 10-phenanthroline (BCP), 3- (4-biphenyl) -4-phenyl-5-tert-butylphenyl-1, 2, 4-Triazole (TAZ), 4- (naphthalen-1-yl) -3, 5-diphenyl-4H-1, 2, 4-triazole (NTAZ), 1,3, 5-tris (p-pyridin-3-yl-phenyl) benzene (TpPyPB), 2,4, 6-tris (3 '- (pyridin-3-yl) biphenyl-3-yl) 1,3, 5-triazine (TmPPPyTz), poly [9, 9-bis (3' - (N, N-dimethyl) -N-ethylammonium) -propyl) -2, 7-fluorene]-alt-2, 7- (9, 9-dioctylfluorene)](PFNBr), tris (phenylquinoxaline) (TPQ), diphenyl-4-triphenylsilyl-phenylphosphine oxide (TSPO1), 2- [4- (9, 10-di-2-naphthalen-2-yl-2-anthracen-2-yl) phenyl]-1-phenyl-1H-benzimidazole (ZADN), 1, 3-bis (9-phenyl-1, 10-phenanthrolin-2-yl) benzene), 1, 4-bis (2-phenyl-1, 10-phenanthrolin-4-yl) benzene (p-bPPhenB), and 1, 3-bis (2-phenyl-1, 10-phenanthrolin-4-yl) benzene (m-bPPhenB), but are not limited thereto.

The EIL 260 is positioned between the HBL250 and the second electrode 164. EIL 260 may comprise alkali or alkaline earth metal halides (e.g., LiF, CsF, NaF, and BaF2) and/or organometallic materials (e.g., lithium quinolate (Liq), lithium benzoate, and sodium stearate). Alternatively, EIL 260 can be an organic layer doped with alkali metals (e.g., Li, Na, K, and Cs) or alkaline earth metals (e.g., Mg, Sr, Ba, and Ra).

As described above, in the OLED D of the present disclosure, since the EML 240 includes the host 242 of the anthracene derivative, the nucleus of which is deuterated, and the dopant 244 of the boron derivative, the OLED D and the organic light emitting display device have advantages in light emitting efficiency, lifespan, and production cost.

In addition, the EBL 230 includes the electron blocking material of formula 5, so that the lifespan of the OLED D and the organic light emitting display device 100 is significantly improved.

In addition, the HBL250 includes at least one of the hole blocking material of formula 7 and the hole blocking material of formula 9, so that the lifespan of the OLED D and the organic light emitting display device 100 is further improved.

[ Synthesis of the host ]

1. Synthesis of Compound host 1

(1) Intermediate H-1

[ reaction formula 1-1]

Anhydrous copper bromide (45g, 0.202mol) was added to anthracene-D10 (18.8g, 0.10mol) CCl₄In solution. The mixture was heated and stirred under nitrogen atmosphere for 12 hours. After completion of the reaction, the white cubr (i) compound was filtered off and the remaining liquid was purified by using a 35nm alumina column. The solvent was removed from the refined reaction solution by using a column under vacuum conditions to obtain a mixture containing intermediate H-1 (9-bromoanthracene-D9).

The mixture comprised intermediate H-1, starting material (anthracene-D10), and dibromo byproduct. This mixture was refined to obtain intermediate H-1, which was used as the starting material in reaction formula 1-2.

(2) Intermediate H-2

[ reaction formulae 1-2]

Intermediate H-1(2.66g, 0.01mol) and naphthalene-1 boronic acid (1.72g, 0.01mol) were added to a round bottom flask, and toluene (30ml) was further added to form a mixture solution. The mixture solution was stirred and added under nitrogen by adding Na₂CO₃(2.12g) Na formed by dissolving in distilled water (10ml)₂CO₃An aqueous solution. Further adding Pd (PPh) as a catalyst₃)₄(0.25g, 0.025mmol) and stirred. After the completion of the reaction, the reaction solution was added to a methanol solution to precipitate a product, and the precipitated product was filtered. In the reduced-pressure filter, the precipitated product was washed sequentially with water, aqueous hydrogen chloride solution (10% concentration), water and methanol. The precipitated product was refined to obtain white colorIntermediate H-2(2.6g) as a powder.

(3) Intermediate H-3

[ reaction formulae 1 to 3]

After dissolving intermediate H-2(2.8g, 8.75mmol) in dichloromethane (50mL), Br was added₂(1.4g, 8.75mmol) and stirred at Room Temperature (RT). After the reaction was complete, 2M Na was added to the reaction mass₂S₂O₃Aqueous solution (10mL) and stirred. The organic layer was separated and Na was used₂S₂O₃The aqueous solution (10% strength, 10mL) and distilled water were washed. The organic layer was separated again and purified by using MgSO₄The organic layer was freed of water. After the organic layer was concentrated, an excess of methanol was added to obtain a product. The product was filtered to obtain intermediate H-3(3.3 g).

(4) Main body 1

[ reaction formulae 1 to 4]

Intermediate H-3(1.96g, 0.05mol) and naphthalene-2-boronic acid (1.02g, 0.06mol) were added and dissolved in toluene (30 ml). The mixture solution was stirred under a nitrogen atmosphere. Adding Na to the mixture solution₂CO₃(1.90g) Na formed by dissolving in distilled water (8ml)₂CO₃Aqueous solution (1 ml). Further addition of Pd (PPh)₃)₄(0.125g, 0.0125 mmol). The mixture was heated and stirred under a nitrogen atmosphere. After completion of the reaction, the organic layer was separated, and methanol was added to the organic layer to precipitate a white solid mixture. The white solid mixture was purified by silica gel column chromatography using an eluent of chloroform and hexane (volume ratio ═ 1:3) to obtain compound body 1(2.30 g).

2. Synthesis of Compound host 2

[ reaction formula 2]

Intermediate H-3(1.96g, 0.05mol) and 4- (naphthalen-2-yl) phenylboronic acid (1.49g, 0.06mol) were added and dissolved in toluene (30 ml). The mixture solution was stirred under a nitrogen atmosphere. Adding Na to the mixture solution₂CO₃(1.90g) Na formed by dissolving in distilled water (8ml)₂CO₃Aqueous solution (1 ml). Further addition of Pd (PPh)₃)₄(0.125g, 0.0125 mmol). The mixture was heated and stirred under a nitrogen atmosphere. After completion of the reaction, the organic layer was separated, and methanol was added to the organic layer to precipitate a white solid mixture. The white solid mixture was purified by silica gel column chromatography using an eluent of chloroform and hexane (volume ratio ═ 1:3) to obtain compound body 2(2.30 g).

3. Synthesis of Compound host 3

(1) Intermediate H-4

[ reaction formula 3-1]

Intermediate H-1(2.66g, 0.01mol) and phenylboronic acid (1.22g, 0.01mol) were added to a round-bottom flask, and further toluene (30ml) was added to form a mixture solution. The mixture solution was stirred and added under nitrogen by adding Na₂CO₃(2.12g) Na formed by dissolving in distilled water (10ml)₂CO₃An aqueous solution. Further adding Pd (PPh) as a catalyst₃)₄(0.25g, 0.025mmol) and stirred. After the completion of the reaction, the reaction solution was added to a methanol solution to precipitate a product, and the precipitated product was filtered. In the reduced-pressure filter, the precipitated product was washed sequentially with water, aqueous hydrogen chloride solution (10% concentration), water and methanol. The precipitated product was purified to obtain intermediate H-4(2.4g) as a white powder.

(2) Intermediate H-5

[ reaction formula 3-2]

After dissolving intermediate H-4(2.3g, 8.75mmol) in dichloromethane (50mL), Br was added₂(1.4g, 8.75mmol) and stirred at Room Temperature (RT). After the reaction was complete, 2M Na was added to the reaction mass₂S₂O₃Aqueous solution (10mL) and stirred. The organic layer was separated and Na was used₂S₂O₃The aqueous solution (10% strength, 10mL) and distilled water were washed. The organic layer was separated again and purified by using MgSO₄The organic layer was freed of water. After the organic layer was concentrated, an excess of methanol was added to obtain a product. The product was filtered to obtain intermediate H-5(2.7 g).

(3) Body 3

[ reaction formula 3-3]

Intermediate H-5(1.3g, 0.05mol) and dibenzofuran-2-ylboronic acid (1.26g, 0.06mol) were added and dissolved in toluene (30 ml). The mixture solution was stirred under a nitrogen atmosphere. Adding Na to the mixture solution₂CO₃(1.90g) Na formed by dissolving in distilled water (8ml)₂CO₃Aqueous solution (1 ml). Further addition of Pd (PPh)₃)₄(0.125g, 0.0125 mmol). The mixture was heated and stirred under a nitrogen atmosphere. After completion of the reaction, the organic layer was separated, and methanol was added to the organic layer to precipitate a white solid mixture. The white solid mixture was purified by silica gel column chromatography using an eluent of chloroform and hexane (volume ratio ═ 1:3) to obtain compound body 3(2.30 g).

4. Synthesis of Compound host 4

[ reaction formula 4]

Intermediate H-5(1.3g, 0.05mol) and 4- (2-dibenzofuranyl) phenylboronic acid (1.74g, 0.06mol) were added and dissolved in toluene (30 ml). The mixture solution was stirred under a nitrogen atmosphere. Adding Na to the mixture solution₂CO₃(1.90g) Na formed by dissolving in distilled water (8ml)₂CO₃Aqueous solution (1 ml). Further addition of Pd (PPh)₃)₄(0.125g, 0.0125 mmol). The mixture was heated and stirred under a nitrogen atmosphere. After completion of the reaction, the organic layer was separated, and methanol was added to the organic layer to precipitate a white solid mixture. The white solid mixture was purified by silica gel column chromatography using an eluent of chloroform and hexane (volume ratio ═ 1:3) to obtain compound body 4(2.30 g).

[ Synthesis of dopant ]

1. Synthesis of Compound dopant 3-1

(1) Intermediate (I-7)

[ reaction formula 5-1]

Intermediate (I-H) (10.0g), bis (4-tert-butylphenyl) amine (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path silica gel column (silica gel short pass column) (eluent: toluene) to obtain intermediate (I-7) (16.0 g).

(2) Dopant 3-1

[ reaction formula 5-2]

To a flask containing intermediate (I-7) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 3-1(8.5g) was obtained.

2. Synthesis of Compound dopant 3-2

(1) Intermediate (I-U)

[ reaction formula 6-1]

3,4, 5-trichloroaniline (12.0g), d 5-bromobenzene (30.0g), dichlorobis [ (di-tert-butyl (4-dimethylaminophenyl) phosphino) palladium ] (Pd-132, 0.43g) as a palladium catalyst, sodium tert-butoxide (NaOtBu, 14.7g) and xylene (200ml) were placed in a flask and heated at 120 ℃ for 3 hours under a nitrogen atmosphere. After the reaction, water and ethyl acetate were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified using a short path column of silica gel (eluent: toluene/heptane 1/1 (vol.)) to yield intermediate (I-U) (15.0 g).

(2) Intermediates I-V

[ reaction formula 6-2]

Intermediate (I-U) (15.0g), bis (4-tert-butylphenyl) amine (25.9g), bis (dibenzylideneacetone) palladium (0.48g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.86g), sodium tert-butoxide (10.0g) and xylene (130ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified using a short path column of silica gel (eluent: toluene) to obtain intermediates (I-V) (23.0 g).

(3) Dopant 3-2

[ reaction formula 6-3]

To a flask containing intermediate (I-V) (23.0g) and tert-butylbenzene (250ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (33.5ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 60 ℃, the mixture was stirred for 1 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (13.6g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂7.0g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. Cooling the reaction solution to room temperature, and addingTo this was added an aqueous solution of sodium acetate which had been cooled in an ice bath, then ethyl acetate, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: heated chlorobenzene). The crude product obtained was washed with refluxing heptane and refluxing ethyl acetate and then further reprecipitated from chlorobenzene. Thus, compound dopant 3-2(12.9g) was obtained.

3. Synthesis of Compound dopant 3-3

(1) Intermediate (I-H)

[ reaction formula 7-1]

3,4, 5-trichloroaniline (15.0g), iodobenzene (46.7g), dichlorobis [ (di-tert-butyl (4-dimethylaminophenyl) phosphino) palladium ] (Pd-132, 0.54g) as a palladium catalyst, sodium tert-butoxide (NaOtBu, 18.3g) and xylene (150ml) were placed in a flask and heated at 120 ℃ for 2 hours under a nitrogen atmosphere. After the reaction, water and ethyl acetate were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified using a short path column of silica gel (eluent: toluene) to obtain intermediate (I-H) (49.7 g).

(2) Intermediate (I-I)

[ reaction formula 7-2]

Intermediate (I-H) (10.0g), intermediate (I-E) (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-I) (16.0 g).

(3) Dopant 3-3

[ reaction formula 7-3]

To a flask containing intermediate (I-I) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 3-3(8.5g) was obtained.

4. Synthesis of Compound dopant 3-4

[ reaction formula 8]

To a flask containing intermediate (I-I) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was increased to 70 ℃ and the mixture was cooledStirring was carried out for 0.5 hour, and then components having a boiling point lower than that of tert-butylbenzene were distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopants 3 to 4(0.5g) were obtained.

5. Synthesis of Compound dopants 3-5

(1) Intermediate (I-W)

[ reaction formula 9-1]

Intermediate (I-R) (10.7g), intermediate (I-U) (6.0g), bis (dibenzylideneacetone) palladium (0.58g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.82g), sodium tert-butoxide (4.0g) and xylene (60ml) were placed in a flask and heated at 100 ℃ for 1.5 hours under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified with a short path column of silica gel (eluent: toluene), and the obtained solid was washed with cooled heptane to obtain intermediate (I-W) (9.4 g).

(2) Dopant 3-5

[ reaction formula 9-2]

To a flask containing intermediate (I-W) (8.6g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (13.8ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 60 ℃, and the mixture was stirred for 0.5 hour. Thereafter, components having a boiling point lower than that of tert-butylbenzene were distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (5.4g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂2.8g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, an aqueous sodium acetate solution which had been cooled in an ice bath was added thereto, then ethyl acetate was added, and the mixture was stirred for 1 hour. The yellow suspension was filtered and the precipitate was washed twice with methanol and pure water and again with methanol. The yellow crystals were heated and dissolved in chlorobenzene and then purified on a short-path column of silica gel (eluent: heated chlorobenzene). The crude product obtained was filtered by adding heptane and then the crystals were washed with heptane to obtain compound dopants 3-5(5.9 g).

6. Synthesis of Compound dopant 6-1

(1) Intermediate (I-8)

[ reaction formula 10-1]

Intermediate (I-H) (10.0g), bis (4-t-pentylalkylphenyl) amine (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium t-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-8) (16.0 g).

(2) Dopant 6-1

[ reaction formula 10-2]

To a flask containing intermediate (I-8) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, Compound dopant 6-1(8.5g) was obtained.

7. Synthesis of Compound dopant 6-2

(1) Intermediate (I-X)

[ reaction formula 11-1]

Intermediate (I-U) (15.0g), bis (4-t-pentylalkylphenyl) amine (26.0g), bis (dibenzylideneacetone) palladium (0.48g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.86g), sodium t-butoxide (10.0g) and xylene (130ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-X) (23.0 g).

(2) Dopant 6-2

[ reaction formula 11-2]

To a flask containing intermediate (I-X) (23.0g) and tert-butylbenzene (250ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (33.5ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 60 ℃, the mixture was stirred for 1 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (13.6g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂7.0g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, an aqueous sodium acetate solution which had been cooled in an ice bath was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: heated chlorobenzene). The crude product obtained was washed with refluxing heptane and refluxing ethyl acetate and then further reprecipitated from chlorobenzene. Thus, compound dopant 6-2(12.9g) was obtained.

8. Synthesis of Compound dopant 6-3

(1) Intermediate (I-K)

[ reaction formula 12-1]

Intermediate (I-H) (10.0g), intermediate (I-J) (19.5g), bis (dibenzylideneacetone) palladium (0.33g), SPhos (0.59g), sodium t-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-K) (16.0 g).

(2) Dopant 6-3

[ reaction formula 12-2]

To a flask containing intermediate (I-K) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 6-3(8.5g) was obtained.

9. Synthesis of Compound dopant 6-4

[ reaction formula 13]

To a flask containing intermediate (I-K) (16.0g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 6-4(0.6g) was obtained.

10. Synthesis of Compound dopant 6-5

(1) Intermediate (I-Z)

[ reaction formula 14-1]

Intermediate (I-U) (10.7g), intermediate (I-Y) (6.0g), bis (dibenzylideneacetone) palladium (0.58g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.82g), sodium tert-butoxide (4.0g) and xylene (60ml) were placed in a flask and heated at 100 ℃ for 1.5 hours under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified with a short path column of silica gel (eluent: toluene), and the obtained solid was washed with cooled heptane to obtain intermediate (I-Z) (9.4 g).

(2) Dopant 6-5

[ reaction formula 14-2]

To a flask containing intermediate (I-Z) (8.6g) and tert-butylbenzene (100ml) was added dropwise a 1.62M solution of tert-butyllithium pentane (13.8ml) at 0 ℃ under a nitrogen atmosphere. After the dropwise addition of the tert-butyllithium pentane solution was completed, the temperature of the mixture was raised to 60 ℃, and the mixture was stirred for 0.5 hour. Thereafter, components having a boiling point lower than that of tert-butylbenzene were distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (5.4g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂2.8g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, an aqueous sodium acetate solution which had been cooled in an ice bath was added thereto, then ethyl acetate was added, and the mixture was stirred for 1 hour. The yellow suspension was filtered and the precipitate was washed twice with methanol and pure water and again with methanol. The yellow crystals were heated and dissolved in chlorobenzene and then purified on a short-path column of silica gel (eluent: heated chlorobenzene). The obtained crude product was filtered by adding heptane, and then the crystals were washed with heptane to obtain compound dopant 6-5(6.1 g).

11. Synthesis of Compound dopant 5-1

(1) Intermediate (I-10)

[ reaction formula 15-1]

Intermediate (I-9) (10.0g), bis (4-tert-butylphenyl) amine (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask under a nitrogen atmosphere, and heated at 100 ℃ for 1 hour. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-10) (16.1 g).

(2) Dopant 5-1

[ reaction formula 15-2]

To a flask containing intermediate (I-10) (16.0g) and tert-butylbenzene (100ml) was placed a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After completion of the dropwise addition, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. ByThus, compound dopant 5-1(8.0g) was obtained.

12. Synthesis of Compound dopant 5-2

(1) Intermediate (I-12)

[ reaction formula 16-1]

Intermediate (I-11) (10.0g), bis (4-tert-butylphenyl) amine (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-12) (16.0 g).

(2) Dopant 5-2

[ reaction formula 16-2]

To a flask containing intermediate (I-12) (16.0g) and tert-butylbenzene (100ml) was placed a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After completion of the dropwise addition, the temperature of the mixture was increased to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, and added theretoCooled aqueous sodium acetate solution, then ethyl acetate was added and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 5-2(8.5g) was obtained.

13. Synthesis of Compound dopant 5-3

(1) Intermediate (I-13)

[ reaction formula 17-1]

Intermediate (I-9) (10.0g), intermediate (I-E) (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-13) (16.5 g).

(2) Dopant 5-3

[ reaction formula 17-2]

To a flask containing intermediate (I-13) (16.0g) and tert-butylbenzene (100ml) was placed 1.62M tert-butyllithium pentane solution (22.1ml) at 0 ℃ under a nitrogen atmosphere. After completion of the dropwise addition, the temperature of the mixture was increased to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. Thereafter, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (ii)EtNiPr₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 5-3(8.5g) was obtained.

14. Synthesis of Compound dopant 5-4

[ reaction formula 18]

To a flask containing intermediate (I-13) (16.0g) and tert-butylbenzene (100ml) was placed 1.62M tert-butyllithium pentane solution (22.1ml) at 0 ℃ under a nitrogen atmosphere. After completion of the dropwise addition, the temperature of the mixture was increased to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thus, compound dopant 5-4(0.5g) was obtained.

15. Synthesis of Compound dopant 5-5

(1) Intermediate (I-14)

[ reaction formula 19-1]

Intermediate (I-11) (10.0g), intermediate (I-R) (19.5g), bis (dibenzylideneacetone) palladium (0.33g), 2-dicyclohexylphosphino-2 ', 6' -dimethoxybiphenyl (SPhos, 0.59g), sodium tert-butoxide (6.9g) and xylene (80ml) were placed in a flask and heated at 100 ℃ for 1 hour under a nitrogen atmosphere. After the reaction, water and toluene were added to the reaction solution, followed by stirring. After that, the organic layer was separated and washed with water. After that, the organic layer was concentrated to obtain a crude product. The crude product was purified by means of a short-path column on silica gel (eluent: toluene) to obtain intermediate (I-14) (17.5 g).

(2) Dopant 5-5

[ reaction formula 19-2]

To a flask containing intermediate (I-14) (16.0g) and tert-butylbenzene (100ml) was placed a 1.62M solution of tert-butyllithium pentane (22.1ml) at 0 ℃ under a nitrogen atmosphere. After completion of the dropwise addition, the temperature of the mixture was raised to 70 ℃, the mixture was stirred for 0.5 hour, and then a component having a boiling point lower than that of tert-butylbenzene was distilled off under reduced pressure. The residue was cooled to-50 ℃, boron tribromide (9.0g) was added thereto, the temperature of the mixture was raised to room temperature, and the mixture was stirred for 0.5 hour. After that, the mixture was cooled again to 0 ℃, to which was added N, N-diisopropylethylamine (EtNiPr)₂4.6g), and the mixture was stirred at room temperature until heat generation stabilized. Subsequently, the temperature of the mixture was raised to 100 ℃, and the mixture was heated and stirred for 1 hour. The reaction solution was cooled to room temperature, a cooled aqueous solution of sodium acetate was added thereto, then ethyl acetate was added, and the mixture was partitioned. The organic layer was concentrated and then purified by short path column on silica gel (eluent: toluene). The crude product obtained was further reprecipitated from heptane. Thereby, compound doping is obtained5-5 g (10.0g) of a hetero agent.

[ organic light emitting diode ]

An anode (ITO, 0.5mm), HIL (formula 11(97 wt%), and formula 12(3 wt%),) HTL (formula 11,)、EBLEML (host (98 wt%) and dopant (2 wt%),)、HBLEIL (formula 13(98 wt.%) and Li (2 wt.%),) And a cathode (Al,). An encapsulation film is formed by using a UV-curable epoxy compound and a moisture absorbent to form an OLED.

[ formula 11]

[ formula 12]

[ formula 13]

1. Comparative example

(1) Comparative examples 1 to 3(Ref1 to Ref3)

The compound "E1" in formula 6 was used for EBL. The compound "dopant 3-1" in formula 4 is used as a dopant and the compound "host 1-1" in formula 14 is used for a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

(2) Comparative examples 4 to 6(Ref4 to Ref6)

The compound "E1" in formula 6 was used for EBL. The compound "dopant 3-1" in formula 4 is used as a dopant and the compound "host 1-2" in formula 14 is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

(3) Comparative examples 7 to 9(Ref7 to Ref9)

NPB (N, N '-di (1-naphthyl) -N, N' -diphenyl- (1,1 '-biphenyl) -4,4' -diamine) was used for EBL. The compound "dopant 3-1" in formula 4 was used as a dopant and the compound "host 1" in formula 2 was used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

(4) Comparative examples 10 to 12(Ref10 to Ref12)

The compound "E1" in formula 6 was used for EBL. The compound "dopant 3-1" in formula 4 is used as a dopant and the compound "host 1-3" in formula 14 is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

(5) Comparative examples 13 to 15(Ref13 to Ref15)

The compound "E1" in formula 6 was used for EBL. The compound of formula 4, dopant 3-1, is used as a dopant and the compound of formula 14, host 1-4, is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

2. Examples of the embodiments

(1) Examples 1 to 3(Ex1 to Ex3)

The compound "E1" in formula 6 was used for EBL. The compound "dopant 3-1" in formula 4 was used as a dopant and the compound "host 1" in formula 2 was used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

[ formula 14]

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 1 to 15 and examples 1 to 3 were measured and listed in table 1.

TABLE 1

As shown in table 1, the life span of the OLEDs in comparative examples 13 to 15 and examples 1 to 3 using hosts whose anthracene nucleus was substituted with deuterium was significantly increased.

On the other hand, the OLEDs in examples 1 to 3 using a host whose core and substituent are substituted with deuterium have shorter lifetimes than the OLEDs in comparative examples 13 to 15 using a host whose core and substituent are substituted with deuterium. However, the OLEDs in examples 1 to 3 provide sufficient lifetime with fewer deuterium atoms (which are very expensive). That is, the OLED provides a sufficient lifetime while minimizing an increase in production cost due to deuterium atoms.

In addition, the life span of the OLEDs in examples 1 to 3 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 7 to 9.

In addition, the life span of the OLEDs in examples 2 and 3 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 1.

3. Comparative examples 16 to 30(Ref16 to Ref30)

The compound "dopant 3-2" in formula 4 was used instead of the compound "dopant 3-1" of comparative examples 1 to 15.

4. Examples 4 to 6(Ex4 to Ex6)

The compound "dopant 3-2" in formula 4 was used instead of the compound "dopant 3-1" of examples 1 to 3.

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 16 to 30 and examples 4 to 6 were measured and listed in table 2.

TABLE 2

As shown in table 2, the life time of the OLEDs in comparative examples 28 to 30 and examples 4 to 6 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 4 to 6 using hosts whose anthracene nucleus only is substituted with deuterium have shorter lifetimes than the OLEDs in comparative examples 28 to 30 using hosts whose anthracene nucleus and substituents are substituted with deuterium. However, the OLEDs in examples 4 to 6 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 4 to 6 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 22 to 24.

In addition, the life span of the OLEDs in examples 5 and 6 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 4.

5. Comparative examples 31 to 45(Ref31 to Ref45)

The compound "dopant 3-3" in formula 4 was used instead of the compound "dopant 3-1" of comparative examples 1 to 15.

6. Examples 7 to 9(Ex7 to Ex9)

The compound "dopant 3-3" in formula 4 was used instead of the compound "dopant 3-1" of examples 1 to 3.

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 31 to 45 and examples 7 to 9 were measured and listed in table 3.

TABLE 3

As shown in table 3, the life time of the OLEDs in comparative examples 43 to 45 and examples 7 to 9 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 7 to 9 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 43 to 45 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 7 to 9 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 7 to 9 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 37 to 39.

In addition, the life span of the OLEDs in examples 8 and 9 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 7.

7. Comparative examples 46 to 60(Ref46 to Ref60)

The compound "dopant 3-4" in formula 4 was used instead of the compound "dopant 3-1" of comparative examples 1 to 15.

8. Examples 10 to 12(Ex10 to Ex12)

The compound "dopant 3-4" in formula 4 was used instead of the compound "dopant 3-1" of examples 1 to 3.

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 46 to 60 and examples 10 to 12 were measured and listed in table 4.

TABLE 4

As shown in table 4, the life time of the OLEDs in comparative examples 58 to 60 and examples 10 to 12 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 10 to 12 using the hosts whose anthracene nucleus alone was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 58 to 60 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 10 to 12 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 10 to 12 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 52 to 54.

In addition, the life span of the OLEDs in examples 11 and 12 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 10.

9. Comparative examples 61 to 75(Ref61 to Ref75)

The compound "dopant 3-5" in formula 4 was used instead of the compound "dopant 3-1" of comparative examples 1 to 15.

10. Examples 13 to 15(Ex13 to Ex15)

The compound "dopant 3-5" in formula 4 was used instead of the compound "dopant 3-1" of examples 1 to 3.

Characteristics, i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95), of the OLEDs manufactured in comparative examples 61 to 75 and examples 13 to 15 were measured and listed in table 5.

TABLE 5

As shown in table 5, the life time of the OLEDs in comparative examples 73 to 75 and examples 13 to 15 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 13 to 15 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 73 to 75 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 13 to 15 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 13 to 15 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 67 to 69.

In addition, the life span of the OLEDs in examples 14 and 15 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 13.

Furthermore, when the EML includes a fully deuterated dopant (i.e., the compound "dopant 3-5"), the lifetime of the OLED is significantly increased.

11. Comparative examples 76 to 90(Ref76 to Ref90)

The compounds "subject 2-1" in formula 15, "subject 2-2" in formula 15, "subject 2" in formula 2, "subject 2-3" in formula 15, and "subject 2-4" in formula 15 were used in place of the compounds "subject 1-1", "subject 1-2", "subject 1-3", and "subject 1-4" of comparative examples 1 to 15.

12. Examples 16 to 18(Ex16 to Ex18)

The compound "host 2" in formula 2 was used instead of the compound "host 1" of examples 1 to 3.

[ formula 15]

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 76 to 90 and examples 16 to 18 were measured and listed in table 6.

TABLE 6

As shown in table 6, the life time of the OLEDs in comparative examples 88 to 90 and examples 16 to 18 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 16 to 18 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 88 to 90 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 16 to 18 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 16 to 18 using the electron blocking material of the amine derivative (i.e., the compound of formula 5) was significantly increased as compared to the OLEDs in comparative examples 82 to 84.

In addition, the life span of the OLEDs in examples 17 and 18 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 16.

13. Comparative examples 91 to 105(Ref91 to Ref105)

The compounds "host 2-1" in formula 15, "host 2-2" in formula 15, "host 2" in formula 2, "host 2-3" in formula 15, and "host 2-4" in formula 15 were used in place of the compounds "host 1-1", "host 1-2", "host 1-3", and "host 1-4" of comparative examples 16 to 30.

14. Examples 19 to 21(Ex19 to Ex21)

The compound "body 2" in formula 2 was used instead of the compound "body 1" of examples 4 to 6.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 91 to 105 and examples 19 to 21 were measured and listed in table 7.

TABLE 7

As shown in table 7, the life time of the OLEDs in comparative examples 103 to 105 and examples 19 to 21 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 19 to 21 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 103 to 105 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 19 to 21 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 19 to 21 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 97 to 99.

In addition, the life span of the OLEDs in examples 20 and 21 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 19.

15. Comparative examples 106 to 120(Ref106 to Ref120)

The compounds "subject 2-1" in formula 15, "subject 2-2" in formula 15, "subject 2" in formula 2, "subject 2-3" in formula 15, and "subject 2-4" in formula 15 were used in place of the compounds "subject 1-1", "subject 1-2", "subject 1-3", and "subject 1-4" of comparative examples 31 to 45.

16. Examples 22 to 24(Ex22 to Ex24)

The compound "host 2" in formula 2 was used instead of the compound "host 1" of examples 7 to 9.

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 106 to 120 and examples 22 to 24 were measured and listed in table 8.

TABLE 8

As shown in table 8, the life time of the OLEDs in comparative examples 118 to 120 and examples 22 to 24 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 22 to 24 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 118 to 120 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 22 to 24 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 22 to 24 using the electron blocking material of the amine derivative (i.e., the compound of formula 5) was significantly increased compared to the OLEDs in comparative examples 112 to 114.

In addition, the life span of the OLEDs in examples 23 and 24 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 22.

17. Comparative examples 121 to 135(Ref121 to Ref135)

The compounds "subject 2-1" in formula 15, "subject 2-2" in formula 15, "subject 2" in formula 2, "subject 2-3" in formula 15, and "subject 2-4" in formula 15 were used in place of the compounds "subject 1-1", "subject 1-2", "subject 1-3", and "subject 1-4" of comparative examples 46 to 60.

18. Examples 25 to 27(Ex25 to Ex27)

The compound "host 2" in formula 2 was used instead of the compound "host 1" of examples 10 to 12.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 121 to 135 and examples 25 to 27 were measured and listed in table 9.

TABLE 9

As shown in table 9, the life span of the OLEDs in comparative examples 133 to 135 and examples 25 to 27 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 25 to 27 using the hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 133 to 135 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 25 to 27 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 25 to 27 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 127 to 129.

In addition, the life span of the OLEDs in examples 26 and 27 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 25.

19. Comparative examples 136 to 150(Ref136 to Ref150)

The compounds "subject 2-1" in formula 15, "subject 2-2" in formula 15, "subject 2" in formula 2, "subject 2-3" in formula 15, and "subject 2-4" in formula 15 were used in place of the compounds "subject 1-1", "subject 1-2", "subject 1-3", and "subject 1-4" of comparative examples 61 to 75.

20. Examples 28 to 30(Ex28 to Ex30)

The compound "host 2" in formula 2 was used instead of the compound "host 1" of examples 13 to 15.

The characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 136 to 150 and examples 28 to 30 were measured and listed in table 10.

Watch 10

As shown in table 10, the life time of the OLEDs in comparative examples 148 to 150 and examples 28 to 30 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

On the other hand, the OLEDs in examples 28 to 30 using hosts whose anthracene nucleus only was replaced with deuterium were somewhat shorter in lifetime than the OLEDs in comparative examples 148 to 150 using hosts whose anthracene nucleus and substituents were replaced with deuterium. However, the OLEDs in examples 28 to 30 provide sufficient lifetime with fewer deuterium atoms (which are very expensive).

In addition, the life span of the OLEDs in examples 28 to 30 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased as compared to the OLEDs in comparative examples 142 to 144.

In addition, the life span of the OLEDs in examples 29 and 30 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 28.

Furthermore, when the EML includes a fully deuterated dopant (i.e., the compound "dopant 3-5"), the lifetime of the OLED is significantly increased.

21. Comparative examples 151 to 153(Ref151 to Ref153)

NPB was used for EBL. The compound "dopant 6-1" in formula 4 is used as a dopant and the compound "host 2" in formula 2 is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

22. Examples 31 to 33(Ex31 to Ex33)

The compound "E1" in formula 6 was used for EBL. The compound "dopant 6-1" in formula 4 is used as a dopant and the compound "host 2" in formula 2 is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

Characteristics, i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95), of the OLEDs manufactured in comparative examples 151 to 153 and examples 31 to 33 were measured and listed in table 11.

TABLE 11

As shown in table 11, the life span of the OLEDs in examples 31 to 33 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 151 to 153.

In addition, the life span of the OLEDs in examples 32 and 33 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 31.

23. Comparative examples 154 to 156(Ref154 to Ref156)

The compound "dopant 6-2" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of comparative examples 151 to 153.

24. Examples 34 to 36(Ex34 to Ex36)

The compound "dopant 6-2" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of examples 31 to 33.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 154 to 156 and examples 34 to 36 were measured and listed in table 12.

TABLE 12

As shown in table 12, the life span of the OLEDs in examples 34 to 36 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 154 to 156.

In addition, the life span of the OLEDs in examples 35 and 36 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 34.

25. Comparative examples 157 to 159(Ref157 to Ref159)

The compound "dopant 6-3" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of comparative examples 151 to 153.

26. Examples 37 to 39(Ex37 to Ex39)

The compound "dopant 6-3" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of examples 31 to 33.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 157 to 159 and examples 37 to 39 were measured and listed in table 13.

Watch 13

As shown in table 13, the life span of the OLEDs in examples 37 to 39 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 157 to 159.

In addition, the life span of the OLEDs in examples 38 and 39 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 37.

27. Comparative examples 160 to 162(Ref160 to Ref162)

The compound "dopant 6-4" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of comparative examples 151 to 153.

28. Examples 40 to 42(Ex40 to Ex42)

The compound "dopant 6-4" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of examples 31 to 33.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 160 to 162 and examples 40 to 42 were measured and listed in table 14.

TABLE 14

As shown in table 14, the life span of the OLEDs in examples 40 to 42 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 160 to 162.

In addition, the life span of the OLEDs in examples 41 and 42 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 40.

29. Comparative examples 163 to 165(Ref163 to Ref165)

The compound "dopant 6-5" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of comparative examples 151 to 153.

30. Examples 43 to 45(Ex43 to Ex45)

The compound "dopant 6-5" in formula 4 was used instead of the compound "dopant 6-1" in formula 4 of examples 31 to 33.

Characteristics (i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE), and lifetime (T95)) of the OLEDs manufactured in comparative examples 163 to 165 and examples 43 to 45 were measured and listed in table 15.

Watch 15

As shown in table 15, the life span of the OLEDs in examples 43 to 45 using the electron blocking material of the amine derivative (i.e., the compound in formula 5) was significantly increased compared to the OLEDs in comparative examples 163 to 165.

In addition, the life span of the OLEDs in examples 44 and 45 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLED in example 43.

Furthermore, when the EML includes a fully deuterated dopant (i.e., the compound "dopant 6-5"), the lifetime of the OLED is significantly increased.

31. Examples of the embodiments

(1) Examples 46 to 48(Ex46 to Ex48)

The compound "E11" in formula 6 was used for EBL. The compound "dopant 3-1" in formula 4 is used as a dopant and the compound "host 2" in formula 2 is used as a host to form an EML. 2-phenyl-9, 10-bis (2, 2' -bipyridin-5-yl) anthracene, a compound "H1" in formula 8, and a compound "H31" in formula 10 were used for HBL, respectively.

(2) Examples 49 to 51(Ex49 to Ex51)

The compound "dopant 3-2" in formula 4 was used instead of the compound "dopant 3-1" in formula 4 of examples 46 to 48.

(3) Examples 52 to 54(Ex52 to Ex54)

The compound "dopant 3-3" in formula 4 was used instead of the compound "dopant 3-1" in formula 4 of examples 46 to 48.

(4) Examples 55 to 57(Ex55 to Ex57)

The compound "dopant 3-4" in formula 4 was used instead of the compound "dopant 3-1" in formula 4 of examples 46 to 48.

(5) Examples 58 to 60(Ex58 to Ex60)

The compound "dopant 3-5" in formula 4 was used instead of the compound "dopant 3-1" in formula 4 of examples 46 to 48.

Characteristics, i.e., voltage (V), efficiency (Cd/a), color Coordinates (CIE) and lifetime (T95), of the OLEDs manufactured in examples 46 to 60 were measured and listed in table 16.

TABLE 16

As shown in table 16, the lifetime of the OLEDs in examples 46 to 60 using hosts whose anthracene nucleus was replaced with deuterium was significantly increased.

In addition, the life span of the OLEDs in examples 47, 48, 50, 51, 53, 54, 56, 57, 59, and 60 using the hole blocking material of the azine compound (i.e., the compound in formula 7) or the benzimidazole derivative (i.e., the compound in formula 9) is further increased as compared to the OLEDs in examples 46, 49, 52, 55, and 58.

Fig. 4 is a schematic cross-sectional view illustrating an OLED having a series structure of two light emitting parts according to a first embodiment of the present disclosure.

As shown in fig. 4, the OLED D includes first and second electrodes 160 and 164 facing each other and an organic light emitting layer 162 between the first and second electrodes 160 and 164. The organic light emitting layer 162 includes a first light emitting portion 310, the first light emitting portion 310 including a first EML 320; a second light emitting part 330, the second light emitting part 330 including a second EML 340; and a Charge Generation Layer (CGL)350 between the first and second light emitting parts 310 and 330.

The first electrode 160 may be formed of a conductive material having a relatively high work function to serve as an anode for injecting holes into the organic light emitting layer 162. The second electrode 164 may be formed of a conductive material having a relatively low work function to serve as a cathode for injecting electrons into the organic light emitting layer 162.

The CGL 350 is positioned between the first and second light emitting parts 310 and 330, and the first, CGL 350 and second light emitting parts 310, 330 are sequentially stacked on the first electrode 160. That is, the first light emitting part 310 is positioned between the first electrode 160 and the CGL 350, and the second light emitting part 330 is positioned between the second electrode 164 and the CGL 350.

The first light emitting part 310 includes a first EML 320. In addition, the first light emitting part 310 may further include a first EBL 316 between the first electrode 160 and the first EML 320 and a first HBL 318 between the first EML 320 and the CGL 350.

In addition, the first light emitting part 310 may further include a first HTL 314 between the first electrode 160 and the first EBL 316 and a HIL 312 between the first electrode 160 and the first HTL 314.

The first EML 320 includes a host 322 of an anthracene derivative and a dopant 324 of a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. The first EML 320 emits blue light.

For example, in first EML 320, the anthracene nucleus of host 322 is deuterated, and dopant 324 may not be deuterated or may be partially or fully deuterated.

In the first EML 320, the wt% of the host 322 may be about 70 to 99.9 and the wt% of the dopant 324 may be about 0.1 to 30. To provide sufficient luminous efficiency, the wt% of the dopant 324 may be about 0.1 to 10, preferably about 1 to 5.

The second light emitting part 330 includes a second EML 340. In addition, the second light emitting part 330 may further include a second EBL 334 between the CGL 350 and the second EML 340 and a second HBL 336 between the second EML 340 and the second electrode 164.

In addition, the second light emitting section 330 may further include a second HTL 332 between the CGL 350 and the second EBL 334 and an EIL 338 between the second HBL 336 and the second electrode 164.

Second EML 340 includes a host 342 of an anthracene derivative and a dopant 344 of a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. The second EML 340 emits blue light.

For example, in second EML 340, the anthracene nucleus of host 342 is deuterated, and dopant 344 may not be deuterated or may be partially or fully deuterated.

In the second EML 340, the weight% of the host 342 may be about 70 to 99.9, and the weight% of the dopant 344 may be about 0.1 to 30. To provide sufficient luminous efficiency, the wt% of the dopant 344 may be about 0.1 to 10, preferably about 1 to 5.

The body 342 of the second EML 340 may be the same or different from the body 322 of the first EML 320, and the dopant 344 of the second EML 340 may be the same or different from the dopant 324 of the first EML 320.

HIL 312 contains a hole injection material. For example, the hole injection material may include at least one of: 4,4 '-tris (3-methylphenylamino) triphenylamine (MTDATA), 4' -tris (N, N-diphenyl-amino) triphenylamine (NATA), 4 '-tris (N- (naphthalen-1-yl) -N-phenyl-amino) triphenylamine (1T-NATA), 4' -tris (N- (naphthalen-2-yl) -N-phenyl-amino) triphenylamine (2T-NATA), copper phthalocyanine (CuPc), tris (4-carbazolyl-9-yl-phenyl) amine (TCTA), N '-diphenyl-N, N' -bis (1-naphthyl) -1,1 '-biphenyl-4, 4' -diamine (NPB or NPD), 1,4,5,8,9, 11-hexaazatriphenylene hexacarbonitrile (HAT-CN), 1,3, 5-tris [4- (diphenylamino) phenyl ] benzene (TDAPB), poly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, and compounds of formula 12.

The first HTL 314 and the second HTL 332 each include a hole transport material. For example, the hole transport material may include at least one of: n, N ' -diphenyl-N, N ' -bis (3-methylphenyl) -1,1 ' -biphenyl-4, 4' -diamine (TPD), NPB (or NPD), 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-sec-butylphenyl) diphenylamine)) ] (TFB), bis- [4- (N, N-di-p-tolyl-amino) -phenyl ] cyclohexane (TAPC), 3, 5-bis (9H-carbazol-9-yl) -N, N-diphenylaniline (DCDPA), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, N- (biphenyl-4-yl) -N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) biphenyl-4-amine, N- ([1, 1' -biphenyl ] -4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine -an amine, N4, N4, N4 ', N4 ' -tetrakis ([1,1 ' -biphenyl ] -4-yl) - [1,1 ' -biphenyl ] -4,4' -diamine, and a compound of formula 11.

The first EBL 316 and the second EBL 334 each contain an electron blocking material in equation 5. For example, the first EBL 316 and the second EBL 334 may each comprise one of the electron blocking materials in equation 6.

Each of the first HBL 318 and the second HBL 336 includes at least one of the hole blocking material in equation 7 and the hole blocking material in equation 9. For example, first HBL 318 and second HBL 336 may each include at least one of the hole blocking materials in equation 8 and one of the hole blocking materials in equation 10.

The EIL 338 may comprise alkali or alkaline earth metal halides (e.g., LiF, CsF, NaF, and BaF2) and/or organometallic materials (e.g., lithium quinolate (Liq), lithium benzoate, and sodium stearate).

The CGL 350 is positioned between the first and second light emitting portions 310, 330. That is, the first and second light emitting parts 310 and 330 are connected by the CGL 350. The CGL 350 may be a P-N junction CGL of an N-type CGL 352 and a P-type CGL 354.

An N-type CGL 352 is positioned between the first HBL 318 and the second HTL 332 and a P-type CGL 354 is positioned between the N-type CGL 352 and the second HTL 332.

The N-type CGL 352 may be an organic layer doped with alkali metals (e.g., Li, Na, K, and Cs) or alkaline earth metals (e.g., Mg, Sr, Ba, and Ra). For example, the host organic material for the N-type CGL 352 may be one of 4, 7-diphenyl-1, 10-phenanthroline (Bphen) and MTDATA, and the alkali metal or alkaline earth metal as a dopant may be doped at about 0.01 wt% to 30 wt%.

The P-type CGL 354 may include an inorganic material selected from tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), and vanadium oxide (V2O5), an organic material selected from NPD, HAT-CN, F4TCNQ, TPD, N '-tetranaphthyl-benzidine (TNB), TCTA, and N, N' -dioctyl-3, 4,9, 10-perylene dicarboximide (PTCDI-C8), or a combination thereof.

In OLED D, since first EML 320 and second EML 340 each include host 322 and host 342 (each of which is an anthracene derivative) and dopant 324 and dopant 344 (each of which is a boron derivative), and the anthracene nucleus of the anthracene derivative is deuterated. Accordingly, the OLED D and the organic light emitting display device 100 have advantages in light emitting efficiency, lifespan, and production cost.

In addition, the first and second light emitting parts 310 and 330 for emitting blue light are stacked, and the organic light emitting display device 100 provides an image having a high color temperature.

Fig. 5 is a schematic cross-sectional view illustrating an organic light emitting display device according to a second embodiment of the present disclosure, and fig. 6 is a schematic cross-sectional view illustrating an OLED having a series structure of two light emitting parts according to a second embodiment of the present disclosure. Fig. 7 is a schematic cross-sectional view illustrating an OLED having a series structure of three light emitting parts according to a second embodiment of the present disclosure.

As shown in fig. 5, the organic light emitting display device 400 includes: a first substrate 410 in which red, green, and blue pixels RP, GP, and BP are defined; a second substrate 470 facing the first substrate 410; an OLED D positioned between the first and second substrates 410 and 470 and providing white light emission; and a color filter layer 480 between the OLED D and the second substrate 470.

The first substrate 410 and the second substrate 470 may each be a glass substrate or a plastic substrate. For example, the first substrate 410 and the second substrate 470 may each be a polyimide substrate.

A buffer layer 420 is formed on the first substrate, and a TFT Tr corresponding to each of the red pixel RP, the green pixel GP, and the blue pixel BP is formed on the buffer layer 420. The buffer layer 420 may be omitted.

A semiconductor layer 422 is formed on the buffer layer 420. The semiconductor layer 422 may include an oxide semiconductor material or polysilicon.

A gate insulating layer 424 is 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.

A gate electrode 430 formed of a conductive material such as metal is formed on the gate insulating layer 424 corresponding to the center of the semiconductor layer 422.

An interlayer insulating layer 432 formed of an insulating material is formed on the gate electrode 430. The interlayer insulating layer 432 may be formed of an inorganic insulating material (e.g., silicon oxide or silicon nitride) or an organic insulating material (e.g., benzocyclobutene or photo acryl).

The interlayer insulating layer 432 includes a first contact hole 434 and a second contact hole 436 exposing both sides of the semiconductor layer 422. The first contact hole 434 and the second contact hole 436 are positioned at both sides of the gate electrode 430 to be spaced apart from the gate electrode 430.

A source electrode 440 and a drain electrode 442 formed of a conductive material such as metal are formed on the interlayer insulating layer 432.

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

The semiconductor layer 422, the gate electrode 430, the source electrode 440, and the drain electrode 442 constitute a TFT Tr. The TFT Tr serves as a driving element. That is, the TFT Tr may correspond to the driving TFT Td (of fig. 1).

Although not shown, gate lines and data lines cross each other to define pixels, and switching TFTs are formed to be connected to the gate lines and the data lines. The switching TFT is connected to the TFT Tr as a driving element.

Further, a power supply line, which may be formed in parallel with and spaced apart from one of the gate line and the data line, and a storage capacitor for holding a voltage of the gate electrode of the TFT Tr in one frame may also be formed.

A passivation layer 450 is formed to cover the TFT Tr, and the passivation layer 450 includes a drain contact hole 452 exposing the drain electrode 442 of the TFT Tr.

A first electrode 460 is formed in each pixel, and the first electrode 460 is connected to the drain electrode 442 of the TFT Tr through the drain contact hole 452. The first electrode 460 may be an anode and may be formed of a conductive material having a relatively high work function. For example, the first electrode 460 may be formed of a transparent conductive material such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).

A reflective electrode or a reflective layer may be formed under the first electrode 460. For example, the reflective electrode or the reflective layer may be formed of an aluminum-palladium-copper (APC) alloy.

A bank layer 466 is formed on the passivation layer 450 to cover an edge of the first electrode 460. That is, the bank layer 466 is positioned at the boundary of the pixels and exposes the centers of the first electrodes 460 in the red, green, and blue pixels RP, GP, and BP. The bank layer 466 may be omitted.

An organic light emitting layer 462 is formed on the first electrode 460.

Referring to fig. 6, the OLED D includes first and second electrodes 460 and 464 facing each other and an organic light emitting layer 462 between the first and second electrodes 460 and 464. The organic light emitting layer 462 includes a first light emitting portion 710, the first light emitting portion 710 including a first EML 720; a second light-emitting section 730, the second light-emitting section 730 comprising a second EML 740; and a Charge Generation Layer (CGL)750 between the first and second light emitting portions 710 and 730.

The first electrode 460 may be formed of a conductive material having a relatively high work function to serve as an anode for injecting holes into the organic light emitting layer 462. The second electrode 464 may be formed of a conductive material having a relatively low work function to serve as a cathode for injecting electrons into the organic light emitting layer 462.

The CGL750 is positioned between the first and second light emitting parts 710 and 730, and the first, CGL750, and second light emitting parts 710 and 730 are sequentially stacked on the first electrode 460. That is, the first light emitting part 710 is positioned between the first electrode 460 and the CGL750, and the second light emitting part 730 is positioned between the second electrode 464 and the CGL 750.

The first light emitting part 710 includes a first EML 720. In addition, the first light emitting part 710 may further include a first EBL 716 between the first electrode 460 and the first EML 720 and a first HBL 718 between the first EML 720 and the CGL 750.

In addition, the first light emitting part 710 may further include a first HTL 714 between the first electrode 460 and the first EBL 716 and a HIL 712 between the first electrode 460 and the first HTL 714.

The first EML 720 includes a host 722 of an anthracene derivative and a dopant 724 of a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. The first EML 720 emits blue light.

For example, in first EML 720, the anthracene nucleus of host 722 is deuterated, and dopant 724 may not be deuterated or may be partially or fully deuterated.

In the first EML 720, the wt% of the host 722 may be about 70 to 99.9 and the wt% of the dopant 724 may be about 0.1 to 30. To provide sufficient luminous efficiency, the wt% of the dopant 724 may be about 0.1 to 10, preferably about 1 to 5.

The second light emitting section 730 includes a second EML 740. In addition, the second light emitting part 730 may further include a second EBL 734 between the CGL750 and the second EML 740 and a second HBL 736 between the second EML 740 and the second electrode 464.

Further, the second light emitting section 730 may further include a second HTL 732 between the CGL750 and the second EBL 734 and an EIL 738 between the second HBL 736 and the second electrode 464.

The second EML 740 may be a yellow-green EML. For example, the second EML 740 may include a host 742 and a yellow-green dopant 744. The yellow-green dopant 744 may be one of a fluorescent compound, a phosphorescent compound, and a delayed fluorescence compound.

In the second EML 740, the weight% of the host 742 may be about 70 to 99.9, and the weight% of the yellow-green dopant 744 may be about 0.1 to 30. To provide sufficient luminous efficiency, the weight% of the yellow-green dopant 744 may be about 0.1 to 10, preferably about 1 to 5.

HIL 712 contains a hole injection material. For example, the hole injection material may include at least one of: 4,4 '-tris (3-methylphenylamino) triphenylamine (MTDATA), 4' -tris (N, N-diphenyl-amino) triphenylamine (NATA), 4 '-tris (N- (naphthalen-1-yl) -N-phenyl-amino) triphenylamine (1T-NATA), 4' -tris (N- (naphthalen-2-yl) -N-phenyl-amino) triphenylamine (2T-NATA), copper phthalocyanine (CuPc), tris (4-carbazolyl-9-yl-phenyl) amine (TCTA), N '-diphenyl-N, N' -bis (1-naphthyl) -1,1 '-biphenyl-4, 4' -diamine (NPB or NPD), 1,4,5,8,9, 11-hexaazatriphenylene hexacarbonitrile (HAT-CN), 1,3, 5-tris [4- (diphenylamino) phenyl ] benzene (TDAPB), poly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, and compounds of formula 12.

The first HTL 714 and the second HTL 732 each include a hole transport material. For example, the hole transport material may include at least one of: n, N ' -diphenyl-N, N ' -bis (3-methylphenyl) -1,1 ' -biphenyl-4, 4' -diamine (TPD), NPB (or NPD), 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-sec-butylphenyl) diphenylamine)) ] (TFB), bis- [4- (N, N-di-p-tolyl-amino) -phenyl ] cyclohexane (TAPC), 3, 5-bis (9H-carbazol-9-yl) -N, N-diphenylaniline (DCDPA), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, N- (biphenyl-4-yl) -N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) biphenyl-4-amine, N- ([1, 1' -biphenyl ] -4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine -an amine, N4, N4, N4 ', N4 ' -tetrakis ([1,1 ' -biphenyl ] -4-yl) - [1,1 ' -biphenyl ] -4,4' -diamine, and a compound of formula 11.

The first EBL 716 and the second EBL 734 each comprise an electron blocking material in equation 5. For example, first EBL 716 and second EBL 734 may each comprise one of the electron blocking materials in equation 6.

First HBL 718 and second HBL 736 each include at least one of the hole blocking material in formula 7 and the hole blocking material in formula 9. For example, first HBL 718 and second HBL 736 may each include at least one of the hole blocking materials in formula 8 and one of the hole blocking materials in formula 10.

The EIL 738 may include alkali or alkaline earth metal halides (e.g., LiF, CsF, NaF, and BaF2) and/or organometallic materials (e.g., lithium quinolate (Liq), lithium benzoate, and sodium stearate).

The CGL750 is positioned between the first light emitting portion 710 and the second light emitting portion 730. That is, the first and second light emitting parts 710 and 730 are connected by the CGL 750. CGL750 may be a P-N junction CGL of N-type CGL 752 and P-type CGL 754.

The N-type CGL 752 is positioned between the first HBL 718 and the second HTL 732, and the P-type CGL 754 is positioned between the N-type CGL 752 and the second HTL 732.

The N-type CGL 752 may be an organic layer doped with alkali metals (e.g., Li, Na, K, and Cs) or alkaline earth metals (e.g., Mg, Sr, Ba, and Ra). For example, the host organic material for the N-type CGL 752 may be one of 4, 7-diphenyl-1, 10-phenanthroline (Bphen) and MTDATA, and the alkali metal or alkaline earth metal as a dopant may be doped at about 0.01 wt% to 30 wt%.

The P-type CGL 754 may include an inorganic material selected from tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), and vanadium oxide (V2O5), an organic material selected from NPD, HAT-CN, F4TCNQ, TPD, N '-tetranaphthyl-benzidine (TNB), TCTA, and N, N' -dioctyl-3, 4,9, 10-perylene dicarboximide (PTCDI-C8), or a combination thereof.

In fig. 6, a first EML 720 positioned between the first electrode 460 and the CGL750 includes a host 722 of an anthracene derivative and a dopant 724 of a boron derivative, and a second EML 740 positioned between the second electrode 464 and the CGL750 is a yellow-green EML. Alternatively, the first EML 720 positioned between the first electrode 460 and the CGL750 may be a yellow-green EML, and the second EML 740 positioned between the second electrode 464 and the CGL750 may include a host of an anthracene derivative and a dopant of a boron derivative to become a blue EML.

In OLED D, the first EML 720 includes a host 722 that is an anthracene derivative and a dopant 724 that is a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. Accordingly, the OLED D and the organic light emitting display device 400 have advantages in light emitting efficiency, lifespan, and production cost.

The OLED D including the first light emitting portion 710 and the second light emitting portion 730 providing yellow-green light emission emits white light.

Referring to fig. 7, the organic light emitting layer 462 includes: a first light emitting part 530, the first light emitting part 530 comprising a first EML 520; a second light-emitting part 550, the second light-emitting part 550 including a second EML 540; a third light emitting part 570, the third light emitting part 570 including a third EML 560; a first CGL 580 between the first light emitting part 530 and the second light emitting part 550; and a second CGL 590 between the second light emitting part 550 and the third light emitting part 570.

The first electrode 460 may be formed of a conductive material having a relatively high work function to serve as an anode for injecting holes into the organic light emitting layer 462. The second electrode 464 may be formed of a conductive material having a relatively low work function to serve as a cathode for injecting electrons into the organic light emitting layer 462.

The first CGL 580 is positioned between the first light emitting portion 530 and the second light emitting portion 550, and the second CGL 590 is positioned between the second light emitting portion 550 and the third light emitting portion 570. That is, the first light emitting portion 530, the first CGL 580, the second light emitting portion 550, the second CGL 590, and the third light emitting portion 570 are sequentially stacked on the first electrode 460. In other words, the first light emitting part 530 is positioned between the first electrode 460 and the first CGL 580, the second light emitting part 550 is positioned between the first CGL 580 and the second CGL 590, and the third light emitting part 570 is positioned between the second electrode 464 and the second CGL 590.

The first light emitting part 530 may include an HIL 532, a first HTL 534, a first EBL 536, a first EML 520, and a first HBL 538 sequentially stacked on the first electrode 460. That is, the HIL 532, the first HTL 534, and the first EBL 536 are positioned between the first electrode 460 and the first EML 520, and the first HBL 538 is positioned between the first EML 520 and the first CGL 580.

First EML 520 includes a host 522 of an anthracene derivative and a dopant 524 of a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. The first EML 520 emits blue light.

For example, in first EML 520, the anthracene nucleus of host 522 is deuterated, and dopant 524 may not be deuterated or may be partially or fully deuterated.

In the first EML 520, the wt% of the host 522 may be about 70 to 99.9 and the wt% of the dopant 524 may be about 0.1 to 30. To provide sufficient luminous efficiency, the wt% of the dopant 524 may be about 0.1 to 10, preferably about 1 to 5.

The second light emitting part 550 may include a second HTL 552, a second EML 540, and an Electron Transport Layer (ETL) 554. The second HTL 552 is positioned between the first CGL 580 and the second EML 540, and the ETL 554 is positioned between the second EML 540 and the second CGL 590.

The second EML 540 may be a yellow-green EML. For example, the second EML 540 may comprise a host and a yellow-green dopant. Alternatively, the second EML 540 may contain a host, a red dopant, and a green dopant. In this case, the second EML 540 may include a lower layer including the host and the red dopant (or the green dopant) and an upper layer including the host and the green dopant (or the red dopant).

The second EML 540 may have a two-layer structure of a first layer (which includes a host and a red dopant) and a second layer (which includes a host and a yellow-green dopant), or a three-layer structure of a first layer (which includes a host and a red dopant), a second layer (which includes a host and a yellow-green dopant), and a third layer (which includes a host and a green dopant).

The third light emitting section 570 may include a third HTL 572, a second EBL 574, a third EML 560, a second HBL 576, and an EIL 578.

The third EML 560 contains a host 562 of an anthracene derivative and a dopant 564 of a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated. The third EML 560 emits blue light.

For example, in third EML 560, the anthracene nucleus of host 562 is deuterated, and dopant 564 may not be deuterated or may be partially or fully deuterated.

In the third EML 560, the weight% of the host 562 may be about 70 to 99.9 and the weight% of the dopant 564 may be about 0.1 to 30. To provide sufficient luminous efficiency, the wt% of the dopant 564 may be about 0.1 to 10, preferably about 1 to 5.

The body 562 of the third EML 560 may be the same or different from the body 522 of the first EML 520, and the dopant 564 of the third EML 560 may be the same or different from the dopant 524 of the first EML 520.

The HIL 532 contains a hole injection material. For example, the hole injection material may include at least one of: 4,4 '-tris (3-methylphenylamino) triphenylamine (MTDATA), 4' -tris (N, N-diphenyl-amino) triphenylamine (NATA), 4 '-tris (N- (naphthalen-1-yl) -N-phenyl-amino) triphenylamine (1T-NATA), 4' -tris (N- (naphthalen-2-yl) -N-phenyl-amino) triphenylamine (2T-NATA), copper phthalocyanine (CuPc), tris (4-carbazolyl-9-yl-phenyl) amine (TCTA), N '-diphenyl-N, N' -bis (1-naphthyl) -1,1 '-biphenyl-4, 4' -diamine (NPB or NPD), 1,4,5,8,9, 11-hexaazatriphenylene hexacarbonitrile (HAT-CN), 1,3, 5-tris [4- (diphenylamino) phenyl ] benzene (TDAPB), poly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, and compounds of formula 12.

The first to third HTLs 534, 552 and 572 each include a hole transport material. For example, the hole transport material may include at least one of: n, N ' -diphenyl-N, N ' -bis (3-methylphenyl) -1,1 ' -biphenyl-4, 4' -diamine (TPD), NPB (or NPD), 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-sec-butylphenyl) diphenylamine)) ] (TFB), bis- [4- (N, N-di-p-tolyl-amino) -phenyl ] cyclohexane (TAPC), 3, 5-bis (9H-carbazol-9-yl) -N, N-diphenylaniline (DCDPA), N- (biphenyl-4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine, N- (biphenyl-4-yl) -N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) biphenyl-4-amine, N- ([1, 1' -biphenyl ] -4-yl) -9, 9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine -an amine, N4, N4, N4 ', N4 ' -tetrakis ([1,1 ' -biphenyl ] -4-yl) - [1,1 ' -biphenyl ] -4,4' -diamine, and a compound of formula 11.

The first and second EBLs 536, 574 each comprise an electron blocking material in equation 5. For example, the first and second EBLs 536, 574 can each comprise one of the electron blocking materials in equation 6.

The first HBL 538 and the second HBL 576 each include at least one of the hole blocking material of formula 7 and the hole blocking material of formula 9. For example, the first HBL 538 and the second HBL 576 may each include at least one of the hole blocking materials in equation 8 and one of the hole blocking materials in equation 10.

EIL 578 can comprise alkali or alkaline earth metal halides (e.g., LiF, CsF, NaF, and BaF2) and/or organometallic materials (e.g., lithium quinolate (Liq), lithium benzoate, and sodium stearate).

The first CGL 580 is positioned between the first light emitting portion 530 and the second light emitting portion 550, and the second CGL 590 is positioned between the second light emitting portion 550 and the third light emitting portion 570. That is, the first light emitting part 530 and the second light emitting part 550 are connected by the first CGL 580, and the second light emitting part 550 and the third light emitting part 570 are connected by the second CGL 590. The first CGL 580 may be a P-N junction CGL of a first N-type CGL582 and a first P-type CGL 584, and the second CGL 590 may be a P-N junction CGL of a second N-type CGL 592 and a second P-type CGL 594.

In the first CGL 580, a first N-type CGL582 is positioned between the first HBL 538 and the second HTL 552, and a first P-type CGL 584 is positioned between the first N-type CGL582 and the second HTL 552.

In the second CGL 590, a second N-type CGL 592 is positioned between the ETL 554 and the third HTL 572, and a second P-type CGL 594 is positioned between the second N-type CGL 592 and the third HTL 572.

The first N-type CGL582 and the second N-type CGL 592 may each be an organic layer doped with an alkali metal (e.g., Li, Na, K, and Cs) or an alkaline earth metal (e.g., Mg, Sr, Ba, and Ra). For example, the host organic material for each of the first and second N-type CGLs 582 and 592 may be one of 4, 7-diphenyl-1, 10-phenanthroline (Bphen) and MTDATA, and the alkali metal or alkaline earth metal as a dopant may be doped at about 0.01 to 30 wt%.

The first and second P-type CGLs 584 and 594 may each include an inorganic material selected from tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), and vanadium oxide (V2O5), an organic material selected from NPD, HAT-CN, F4TCNQ, TPD, N '-tetranaphthyl-benzidine (TNB), TCTA, and N, N' -dioctyl-3, 4,9, 10-perylene dicarboximide (PTCDI-C8), or a combination thereof.

In OLED D, first EML 520 and third EML 560 each include host 522 and host 562, each being an anthracene derivative, and dopant 524 and dopant 564, each being a boron derivative, and the anthracene nucleus of the anthracene derivative is deuterated.

Accordingly, the OLED D including the first and third light emitting parts 530 and 570 and the second light emitting part 550 emitting yellow-green light or red/green light may emit white light.

In fig. 7, the OLED D has a triple stack structure of a first light emitting portion 530, a second light emitting portion 550, and a third light emitting portion 570. Alternatively, the OLED D may further include an additional light emitting part and a CGL.

Referring again to fig. 5, the second electrode 464 is formed over the substrate 410 in which the organic light emitting layer 462 is formed.

In the organic light emitting display device 400, since light emitted from the organic light emitting layer 462 is incident to the color filter layer 480 through the second electrode 464, the second electrode 464 has a thin profile for transmitting light.

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

The color filter layer 480 is positioned over the OLED D and includes a red color filter 482, a green color filter 484, and a blue color filter 486 corresponding to the red pixel RP, the green pixel GP, and the blue pixel BP, respectively.

Although not shown, the color filter layer 480 may be attached to the OLED D by using an adhesive layer. Alternatively, the color filter layer 480 may be directly formed on the OLED D.

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

A polarizing plate (not shown) for reducing reflection of ambient light may be disposed over the top-emitting OLED D. For example, the polarizing plate may be a circular polarizing plate.

In fig. 5, light from the OLED D passes through the second electrode 464, and the color filter layer 480 is disposed on or over the OLED D. Alternatively, when light from the OLED D passes through the first electrode 460, the color filter layer 480 may be disposed between the OLED D and the first substrate 410.

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 color conversion layer, a green color conversion layer, and a blue color conversion layer corresponding to the red pixel RP, the green pixel GP, and the blue pixel BP, respectively. The white light from the OLED D is converted into red, green and blue light by the red, green and blue color conversion layers, respectively.

As described above, the white light from the organic light emitting diode D passes through the red, green, and blue color filters 482, 484, and 486 in the red, green, and blue pixels RP, GP, and BP, so that red, green, and blue light is provided from the red, green, and blue pixels RP, GP, and BP, respectively.

In fig. 5 to 7, an OLED D emitting white light is used for the display device. Alternatively, for use in a lighting device, the OLED D may be formed on the entire surface of the substrate without at least one of the driving element and the color filter layer. The display device and the lighting device each including the OLED D of the present disclosure may be referred to as an organic light emitting device.

Fig. 8 is a schematic cross-sectional view illustrating an organic light emitting display device according to a third embodiment of the present disclosure.

As shown in fig. 8, the organic light emitting display device 600 includes: a first substrate 610 in which red, green, and blue pixels RP, GP, and BP are defined; a second substrate 670 facing the first substrate 610; an OLED D positioned between the first and second substrates 610 and 670 and providing white light emission; and a color conversion layer 680 between the OLED D and the second substrate 670.

Although not shown, color filters may be formed between the second substrate 670 and the respective color conversion layers 680.

A TFT Tr corresponding to each of the red, green, and blue pixels RP, GP, and BP is formed on the first substrate 610, and a passivation layer 650 of the TFT Tr, which has a drain contact hole 652 exposing an electrode (e.g., a drain electrode), is formed to cover the TFT Tr.

An OLED D including a first electrode 660, an organic emission layer 662, and a second electrode 664 is formed on the passivation layer 650. In this case, the first electrode 660 may be connected to the drain electrode of the TFT Tr through the drain contact hole 652.

A bank layer 666 covering an edge of the first electrode 660 is formed at a boundary of the red pixel region RP, the green pixel region GP, and the blue pixel region BP.

The OLED D emits blue light and may have the structure shown in fig. 3 or 4. That is, the OLED D is formed in each of the red, green, and blue pixels RP, GP, and BP and provides blue light.

The color conversion layer 680 includes a first color conversion layer 682 corresponding to the red pixel RP and a second color conversion layer 684 corresponding to the green pixel GP. For example, the color conversion layer 680 may include an inorganic color conversion material such as quantum dots.

The blue light from OLED D is converted into red light by the first color conversion layer 682 in the red pixel RP, and the blue light from OLED D is converted into green light by the second color conversion layer 684 in the green pixel GP.

Accordingly, the organic light emitting display device 600 may display a full color image.

On the other hand, when the light from the OLED D passes through the first substrate 610, the color conversion layer 680 is disposed between the OLED D and the first substrate 610.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.