WO2023113241A1 - Compound for organic electric element, organic electric element using same, and electronic device thereof - Google Patents

Abstract

The present invention provides: a compound represented by chemical formula 1; an organic electric element comprising a first electrode, a second electrode, and an organic material layer between the first electrode and the second electrode; and an electronic device comprising the organic electric element. By including the compound represented by chemical formula 1 in the organic material layer, the driving voltage of the organic electric element can be lowered and the light emission efficiency and lifespan thereof can be improved.

Description

Compounds for organic electric devices, organic electric devices using the same and electronic devices thereof

The present invention relates to a compound for an organic electric device, an organic electric device using the same, and an electronic device thereof.

In general, the organic light emitting phenomenon refers to a phenomenon in which electrical energy is converted into light energy using an organic material. An organic electric device using an organic light emitting phenomenon usually has a structure including an anode, a cathode, and an organic material layer therebetween. Here, the organic material layer is often composed of a multi-layer structure composed of different materials in order to increase the efficiency and stability of the organic electric device, and may include, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.

Lifespan and efficiency are the most problematic issues in organic electroluminescent devices, and as displays become larger, these efficiency and lifespan problems must be solved.

Efficiency, lifespan, driving voltage, etc. are related to each other, and as efficiency increases, driving voltage relatively decreases. indicates a tendency to increase life expectancy.

However, efficiency cannot be maximized by simply improving the organic layer. This is because long life and high efficiency can be achieved at the same time when the optimal combination of the energy level and T ₁ value between each organic material layer and the intrinsic properties of the material (mobility, interfacial property, etc.) is achieved. .

Therefore, in order to fully demonstrate the excellent characteristics of the organic electric device, it is necessary to develop materials constituting the organic material layer in the device, in particular, a light emitting auxiliary layer material.

An object of the present invention is to provide a compound capable of lowering the driving voltage of the device and improving the luminous efficiency and lifetime of the device, an organic electric device using the same, and an electronic device thereof.

In one aspect, the present invention provides a compound represented by the formula below.

In another aspect, the present invention provides an organic electric device and an electronic device containing the compound represented by the above formula.

By using the compound according to the embodiment of the present invention, the driving voltage of the device can be lowered, and the luminous efficiency and lifespan can be improved.

1 to 3 are exemplary views of an organic electroluminescent device according to the present invention.

[Description of code]

100, 200, 300: organic electric element 110: first electrode

120: hole injection layer 130: hole transport layer

140: light emitting layer 150: electron transport layer

160: electron injection layer 170: second electrode

180: light efficiency improvement layer 210: buffer layer

220: light emitting auxiliary layer 320: first hole injection layer

330: first hole transport layer 340: first light emitting layer

350: first electron transport layer 360: first charge generation layer

361: second charge generation layer 420: second hole injection layer

430: second hole transport layer 440: second light emitting layer

450: second electron transport layer CGL: charge generation layer

ST1: first stack ST2: second stack

The terms "aryl group" and "arylene group" used in the present invention have 6 to 60 carbon atoms, respectively, unless otherwise specified, but are not limited thereto. In the present invention, the aryl group or arylene group may include a single ring, a ring assembly, a conjugated multiple ring system, a spiro compound, and the like.

As used in the present invention, the term "fluorenyl group" refers to a substituted or unsubstituted fluorenyl group, and "fluorenyl group" refers to a substituted or unsubstituted fluorenyl group, and the fluorenyl group used in the present invention or The fluorenylene group includes a compound formed by bonding R and R' to each other in the following structure, and also includes a compound in which adjacent R" bonds to each other to form a ring. "Substituted fluorenyl group", "substituted fluorenyl group" The fluorenylene group "in the following structure means that at least one of R, R', R" is a substituent other than hydrogen, and in the formula below, R" may be 1 to 8. In the present specification, regardless of valence A fluorenyl group, a fluorenylene group, and the like can also be described as a fluorene group or fluorene.

As used herein, the term "spiro compound" has a 'spiro linkage', and the spiro linkage means a linkage formed by sharing only one atom between two rings. At this time, the atoms shared by the two rings are called 'spiro atoms', and according to the number of spiro atoms in a compound, they are called 'monospiro-', 'dispiro-', and 'trispiro-', respectively. ' It's called a compound.

As used herein, the term "heterocyclic group" includes not only aromatic rings such as "heteroaryl group" or "heteroarylene group" but also non-aromatic rings, and unless otherwise specified, the carbon number each containing at least one heteroatom. It means 2 to 60 rings, but is not limited thereto. As used herein, the term "heteroatom" refers to an element other than carbon, such as N, O, S, P, or Si, unless otherwise specified, and instead of carbon forming a ring, as in the following compounds SO ₂ , P= A heteroatom group such as O may be included. In the present specification, the heterocyclic group includes a single ring containing a hetero atom, a ring aggregate, a fused several ring system, a spiro compound, and the like.

As used herein, the term "alicyclic group" refers to cyclic hydrocarbons other than aromatic hydrocarbons, and includes monocyclics, ring aggregates, fused multiple ring systems, spiro compounds, etc., unless otherwise specified, carbon atoms It means a ring of 3 to 60, but is not limited thereto. For example, even when benzene, which is an aromatic ring, and cyclohexane, which is a non-aromatic ring, are fused, it corresponds to an aliphatic ring.

In the present specification, the 'group name' corresponding to an aryl group, an arylene group, a heterocyclic group, etc. exemplified as examples of each symbol and its substituent may be described as a 'name of a group reflecting a valence', but described as a 'parent compound name' You may. For example, in the case of 'phenanthrene', which is a kind of aryl group, the name of the group may be described by dividing the valence, such as 'phenanthryl' for a monovalent group and 'phenanthrylene' for a divalent group, but the valence and Regardless, it can also be described as 'phenanthrene', which is the name of the parent compound. Similarly, in the case of pyrimidine, it can also be described as 'pyrimidine' regardless of the valence, or as the 'name of the group' of the corresponding valence, such as a pyrimidinyl group in the case of monovalent, or pyrimidinylene in the case of divalent. there is.

In addition, in the present specification, numbers or alphabets indicating positions may be omitted when describing compound names or substituent names. For example, pyrido[4,3-d]pyrimidine to pyridopyrimidine, benzofuro[2,3-d]pyrimidine to benzofuropyrimidine, 9,9-dimethyl-9H-flu Orenes can be described as dimethylfluorene and the like. Therefore, both benzo[g]quinoxaline and benzo[f]quinoxaline can be described as benzoquinoxaline.

In addition, unless explicitly stated otherwise, the chemical formula used in the present invention applies the same as the substituent definition by the exponent definition of the following formula.

Here, when a is an integer of 0, substituent R ¹ means that it does not exist, that is, when a is 0, it means that hydrogen is bonded to all carbons forming the benzene ring. It may be omitted and the chemical formula or compound may be described. In addition, when a is an integer of 1, one substituent R ¹ is bonded to any one of carbon atoms forming a benzene ring, and when a is an integer of 2 or 3, for example, it may be bonded as follows, and a is 4 to 6 Even if it is an integer of, it is bonded to the carbon of the benzene ring in a similar way, and when a is an integer of 2 or more, R ¹ may be the same as or different from each other.

In addition, unless otherwise specified in this specification, a ring means an aryl ring, a heteroaryl ring, a fluorene ring, an aliphatic ring, etc., a number-ring means a condensed ring, and a number-atom ring means a ring shape. can mean For example, naphthalene corresponds to a bicyclic ring, anthracene corresponds to a tricyclic condensed ring, thiophene or furan corresponds to a 5-membered heterocyclic ring, and benzene or pyridine corresponds to a 6-membered aromatic ring.

In addition, unless otherwise described herein, a ring formed by bonding adjacent groups to each other is a C ₆ ~ C ₆₀ aromatic ring group; fluorenyl group; A C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P; And C ₃ ~ C ₆₀ aliphatic ring group; may be selected from the group consisting of. Here, the aromatic ring group may be an aryl ring, and the heterocyclic group may include a heteroaryl ring.

Unless otherwise specified herein, 'adjacent groups' refers to the following chemical formulas as examples, R ₁ and R ₂ , R ₂ and R ₃ , R ₃ and R ₄ , R ₅ and R ₆ , as well as R ₇ and R ₈ sharing one carbon, and ring configurations that are not directly adjacent to each other, such as R ₁ and R ₇ , R ₁ and R ₈ , or R ₄ and R ₅ . Substituents bonded to elements (such as carbon or nitrogen) may also be included. That is, if there are substituents on immediately adjacent ring constituents such as carbon or nitrogen, they may become adjacent groups, but if no substituent is bonded to the immediately adjacent ring constituents, they are bonded to the next ring constituent Substituents may be adjacent groups, and substituents bonded to the same ring constituting carbon may also be adjacent groups. In the following formula, when substituents bonded to the same carbon as R ₇ and R ₈ combine with each other to form a ring, a compound containing a spiro moiety may be formed.

,

In addition, in the present specification, the expression 'adjacent groups may combine with each other to form a ring' is used in the same meaning as 'adjacent groups bond with each other to selectively form a ring', and at least one pair of It means a case where adjacent groups combine with each other to form a ring.

In addition, unless otherwise specified herein, an aryl group, an arylene group, a fluorenyl group, a fluorenyl group, a heterocyclic group, an aliphatic ring group, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aryloxy group, and neighboring Each ring formed by bonding one group to another deuterium; halogen; an amino group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₂₀ aryl group; fluorenyl group; A C ₂ -C ₂₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And it may be substituted with one or more substituents selected from the group consisting of a C ₃ -C ₂₀ aliphatic ring.

Hereinafter, a layered structure of an organic electric element including the compound of the present invention will be described with reference to FIGS. 1 to 3.

In adding reference numerals to the components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element is or may be directly connected to the other element, but there is another element between the elements. It will be understood that elements may be “connected”, “coupled” or “connected”.

Also, when a component such as a layer, film, region, or plate is said to be “on” or “on” another component, this is not only when it is “directly on” the other component, but also when there is another component in between. It should be understood that the case may also be included. Conversely, when an element is said to be “directly on” another part, it should be understood that there is no intervening part.

1 to 3 are exemplary views of an organic electric element according to an embodiment of the present invention.

Referring to FIG. 1 , an organic electric element 100 according to an embodiment of the present invention includes a first electrode 110 formed on a substrate (not shown), a second electrode 170, and a first electrode 110 ) and an organic material layer formed between the second electrode 170.

The first electrode 110 may be an anode (anode), the second electrode 170 may be a cathode (negative electrode), and in the case of an invert type, the first electrode may be a cathode and the second electrode may be an anode.

The organic material layer may include a hole injection layer 120 , a hole transport layer 130 , a light emitting layer 140 , an electron transport layer 150 and an electron injection layer 160 . Specifically, the hole injection layer 120, the hole transport layer 130, the light emitting layer 140, the electron transport layer 150, and the electron injection layer 160 may be sequentially formed on the first electrode 110.

Preferably, the light efficiency improvement layer 180 may be formed on one side of both surfaces of the first electrode 110 or the second electrode 170 that is not in contact with the organic material layer, and when the light efficiency improvement layer 180 is formed Light efficiency of the organic electric element may be improved.

For example, the light efficiency improvement layer 180 may be formed on the second electrode 170. In the case of a top emission organic light emitting device, the light efficiency improvement layer 180 is formed to form the second electrode 170. ) can reduce optical energy loss due to SPPs (surface plasmon polaritons), and in the case of a bottom emission organic light emitting device, the light efficiency improvement layer 180 serves as a buffer for the second electrode 170 can do.

A buffer layer 210 or an auxiliary light emitting layer 220 may be further formed between the hole transport layer 130 and the light emitting layer 140, which will be described with reference to FIG. 2.

Referring to FIG. 2 , the organic electric element 200 according to another embodiment of the present invention includes a hole injection layer 120 sequentially formed on a first electrode 110, a hole transport layer 130, a buffer layer 210, The light emitting auxiliary layer 220, the light emitting layer 140, the electron transport layer 150, the electron injection layer 160, and the second electrode 170 may be included, and the light efficiency improvement layer 180 is formed on the second electrode. It can be.

Although not shown in FIG. 2 , an electron transport auxiliary layer may be further formed between the light emitting layer 140 and the electron transport layer 150 .

Further, according to another embodiment of the present invention, the organic material layer may have a form in which a plurality of stacks including a hole transport layer, a light emitting layer, and an electron transport layer are formed. This will be described with reference to FIG. 3 .

Referring to FIG. 3 , an organic electric element 300 according to another embodiment of the present invention includes two stacks ST1 and ST2 of multi-layered organic materials between the first electrode 110 and the second electrode 170. More than one set may be formed, and a charge generation layer (CGL) may be formed between the stacks of organic material layers.

Specifically, the organic electric element according to an embodiment of the present invention includes a first electrode 110, a first stack ST1, a charge generation layer (CGL), a second stack ST2, and a second electrode. (170) and a light efficiency improving layer (180).

The first stack ST1 is an organic material layer formed on the first electrode 110, which includes the first hole injection layer 320, the first hole transport layer 330, the first light emitting layer 340, and the first electron transport layer 350. ), and the second stack ST2 may include a second hole injection layer 420, a second hole transport layer 430, a second light emitting layer 440, and a second electron transport layer 450. . In this way, the first stack and the second stack may be organic material layers having the same stacked structure, but may also be organic material layers having different stacked structures.

A charge generation layer CGL may be formed between the first stack ST1 and the second stack ST2. The charge generation layer CGL may include a first charge generation layer 360 and a second charge generation layer 361 . The charge generation layer (CGL) is formed between the first light emitting layer 340 and the second light emitting layer 440 to increase the efficiency of current generated in each light emitting layer and to smoothly distribute charges.

The first light emitting layer 340 may include a light emitting material including a blue fluorescent dopant in a blue host, and the second light emitting layer 440 may include a material in which a green host is doped with a greenish yellow dopant and a red dopant. However, the materials of the first light emitting layer 340 and the second light emitting layer 440 according to the embodiment of the present invention are not limited thereto.

In FIG. 3 , n may be an integer from 1 to 5. When n is 2, the charge generation layer CGL and the third stack may be additionally stacked on the second stack ST2.

When a plurality of light emitting layers are formed by a multi-layer stack structure method as shown in FIG. 3, it is possible to manufacture an organic light emitting device that emits white light by a mixing effect of light emitted from each light emitting layer, as well as to emit light of various colors. An organic electroluminescent device that emits light can also be manufactured.

The compound represented by Chemical Formula 1 of the present invention may be included in the organic material layer. For example, the compound represented by Chemical Formula 1 of the present invention is a hole injection layer (120, 320, 420), a hole transport layer (130, 330, 430), a buffer layer 210, a light emitting auxiliary layer 220, an electron transport layer (150, 350, 450), may be used as a material for the electron injection layer 160, the light emitting layer 140, 340, 440 or the light efficiency improvement layer 180, but preferably the hole transport layer 130, 330, 430, the light emitting auxiliary layer 220 or/and the material of the light efficiency improvement layer 180, more preferably, it may be used as the material of the light emitting auxiliary layer 220.

Since the band gap, electrical properties, interface properties, etc. may vary depending on which substituent is attached to which position even in the same or similar core, selection of the core and research on the combination of sub-substituents bound thereto is required, and in particular, long life and high efficiency can be achieved at the same time when the optimal combination of the energy level and T ₁ value between each organic material layer and the intrinsic properties of the material (mobility, interfacial property, etc.) is achieved.

Therefore, in the present invention, by using the compound represented by Formula 1 as a material for the light emitting auxiliary layer 220, by optimizing the energy level and T ₁ value between each organic material layer, and the intrinsic properties of the material (mobility, interfacial property, etc.) The lifetime and efficiency of the organic electric element can be simultaneously improved.

An organic light emitting device according to an embodiment of the present invention may be manufactured using various deposition methods. It can be manufactured using a deposition method such as PVD or CVD. For example, by depositing a metal or a metal oxide having conductivity or an alloy thereof on a substrate to form an anode 110, a hole injection layer 120 is formed thereon , After forming an organic material layer including a hole transport layer 130, a light emitting layer 140, an electron transport layer 150, and an electron injection layer 160, it can be manufactured by depositing a material that can be used as the cathode 170 thereon. there is. In addition, an auxiliary light emitting layer 220 may be further formed between the hole transport layer 130 and the light emitting layer 140, and an auxiliary electron transport layer (not shown) may be further formed between the light emitting layer 140 and the electron transport layer 150. It can also be formed in a stack structure as described above.

In addition, the organic material layer is formed by a solution process or a solvent process other than a deposition method using various polymer materials, such as a spin coating process, a nozzle printing process, an inkjet printing process, a slot coating process, a dip coating process, a roll-to-roll process, and a doctor blading process. It can be manufactured with a smaller number of layers by a method such as a printing process, a screen printing process, or a thermal transfer method. Since the organic layer according to the present invention can be formed in various ways, the scope of the present invention is not limited by the forming method.

An organic electric device according to an embodiment of the present invention may be a top emission type, a bottom emission type, or a double side emission type depending on the material used.

In addition, the organic electric device according to an embodiment of the present invention may be selected from the group consisting of an organic light emitting device, an organic solar cell, an organic photoreceptor, an organic transistor, a device for monochromatic lighting, and an device for quantum dot display.

Another embodiment of the present invention may include an electronic device including a display device including the above-described organic electric element of the present invention and a control unit controlling the display device. At this time, the electronic device may be a current or future wired/wireless communication terminal, and includes all electronic devices such as a mobile communication terminal such as a mobile phone, a navigation device, a game machine, various TVs, and various computers.

Hereinafter, a compound according to an aspect of the present invention will be described.

A compound according to one aspect of the present invention is represented by Formula 1 below.

<Formula 1>

In Formula 1, each symbol may be defined as follows.

Ring A is a condensed aryl ring of C ₁₀ to C ₃₀ , and ring A may be substituted with one or more R ¹ that are the same as or different from each other. For example, ring A is C ₁₀ to C ₃₀ , C ₆ to C ₂₀ , C ₆ to C ₁₈ , C ₆ to C ₁₆ , C ₆ to C ₁₄ , C ₆ to C ₁₂ , C ₆ to C ₁₀ , C ₁₀ , C It may be a condensed aryl ring such as ₁₄ , C ₁₆ , or C ₁₈ , and specifically, may be a condensed aryl ring such as naphthalene, anthracene, phenanthrene, or pyrene.

L ¹ is a C ₆ to C ₆₀ arylene group.

Ar ¹ to Ar ³ are each independently a C ₆ to C ₆₀ aryl group.

R ¹ to R ⁴ are the same or different, and each independently hydrogen; heavy hydrogen; halogen; cyano group; nitro group; C ₆ ~ C ₆₀ aryl group; fluorenyl group; A C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P; C ₃ ~ C ₆₀ aliphatic ring group; C ₁ ~ C ₂₀ Alkyl group; A C ₂ ~C ₂₀ alkenyl group; A C ₂ ~C ₂₀ alkynyl group; A C ₁ ~ C ₂₀ alkoxy group; C ₆ ~ C ₂₀ aryloxy group; And -L'-N (R _a ) (R _b ) It is selected from the group consisting of, adjacent groups may be bonded to each other to form a ring.

b and c are each an integer of 0 to 4, and d is an integer of 0 to 3.

When adjacent R ¹ , R ² , R ³ , and R ⁴ bond together to form a ring, the ring may be a C ₆ to C ₆₀ aromatic ring group; Fluorenylene group; A C ₃ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P; And it may be selected from the group consisting of a C ₆ ~ C ₆₀ aliphatic ring group.

When adjacent groups combine with each other to form an aromatic ring, the aromatic ring is, for example, C ₆ ~C ₂₀ , C ₆ ~C ₁₈ , C ₆ ~C ₁₆ , C ₆ ~C ₁₄ , C ₆ ~C ₁₃ , It may be an aromatic ring such as C ₆ ~C ₁₂ , C ₆ ~C ₁₀ , C ₆ , C ₁₀ , C ₁₂ , C ₁₄ , C ₁₅ , C ₁₆ , C ₁₈ , and specifically, benzene, naphthalene, anthracene, and phenane. It may be an aryl ring such as threne or pyrene.

L' is a single bond; C ₆ ~ C ₆₀ arylene group; Fluorenylene group; C ₃ ~ C ₆₀ aliphatic ring group; and a C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P.

Wherein R _a and R _b are each independently a C ₆ ~ C ₆₀ aryl group; fluorenyl group; C ₃ ~ C ₆₀ aliphatic ring group; and a C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P.

When at least one of Ar ¹ to Ar ³ , R ¹ to R ⁴ , R _a and R _b is an aryl group, the aryl group is, for example, C ₆ to C ₃₀ , C ₆ to C ₂₉ , C ₆ to C ₂₈ , C ₆ to C ₂₇ , C ₆ to C ₂₆ , C ₆ to C ₂₅ , C ₆ to C ₂₄ , C ₆ to C ₂₃ , C ₆ to C ₂₂ , C 6 to C ₂₁ , C _{6 to} C ₂₀ , C ₆ to C ₁₉ , C ₆ ~C ₁₈ , C ₆ ~C ₁₇ , C ₆ ~C ₁₆ , C ₆ ~C ₁₅ , C ₆ ~C ₁₄ , C 6 ~C ₁₃ , C ₆ ~C ₁₂ , _{C 6 ~} C ₁₁ , C ₆ ~ C ₁₀ , C ₆ , C ₁₀ , C ₁₂ , C ₁₃ , C ₁₄ , C ₁₅ , C ₁₆ , C ₁₇ , C ₁₈ may be an aryl group, specifically, phenyl, biphenyl, naphthyl , terphenyl, phenanthrene, triphenylene and the like.

When at least one of L ¹ and L' is an arylene group, the arylene group is, for example, C ₆ ~C ₃₀ , C ₆ ~C ₂₉ , C ₆ ~C ₂₈ , C ₆ ~C ₂₇ , C ₆ ~C ₂₆ , C ₆ to C ₂₅ , C ₆ to C ₂₄ , C ₆ to C ₂₃ , C ₆ to C ₂₂ , C ₆ to C ₂₁ , C ₆ to C ₂₀ , C ₆ to C ₁₉ , C ₆ to C ₁₈ , C ₆ to C ₁₇ , C ₆ to C ₁₆ , C ₆ to C ₁₅ , C ₆ to C ₁₄ , C ₆ to C ₁₃ , C ₆ to C ₁₂ , C ₆ to C ₁₁ , C ₆ to C ₁₀ , C ₆ , It may be an arylene group such as C ₁₀ , C ₁₂ , C ₁₃ , C ₁₄ , C ₁₅ , C ₁₆ , C ₁₇ , C ₁₈ , and specifically, phenylene, biphenyl, naphthylene, terphenyl, phenanthrene, tri phenylene and the like.

At least one of R ¹ to R ⁴ , R _a and R _b is a fluorenyl group, or when L' is a fluorenyl group, the fluorenyl group or the fluorenyl group is 9,9-dimethyl-9H-flu Orene, 9,9-diphenyl-9H-fluorene, 9,9'-spirobifluorene, spiro[benzo[ b ]fluorene-11,9'-fluorene], benzo[ b ]fluorene , 11,11-diphenyl- 11H -benzo[ b ]fluorene, 9-(naphthalen-2-yl)9-phenyl- 9H -fluorene, and the like.

Each of Ar ¹ to Ar ³ is deuterium; halogen; cyano group; nitro group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; And it may be substituted with one or more substituents selected from the group consisting of a C ₃ -C ₃₀ aliphatic ring group.

Wherein L ¹ , L', R _a and R _b , R ¹ to R ⁴ are each deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; A C ₂ -C ₃₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And it may be substituted with one or more substituents selected from the group consisting of a C ₃ -C ₃₀ aliphatic ring group.

When at least one of Ar ¹ to Ar ³ , L ¹ , L', R _a and R _b , and R ¹ to R ⁴ is substituted with an aryl group, the aryl group is, for example, C ₆ to C ₃₀ , C ₆ to C ₂₉ , C ₆ to C ₂₈ , C ₆ to C ₂₇ , C ₆ to C ₂₆ , C ₆ to C ₂₅ , C ₆ to C ₂₄ , C ₆ to C ₂₃ , C ₆ to C ₂₂ , C ₆ to C ₂₁ , C ₆ ~C ₂₀ , C ₆ ~C ₁₉ , C ₆ ~C ₁₈ , C ₆ ~C ₁₇ , C ₆ ~C ₁₆ , C ₆ ~C ₁₅ , C ₆ ~C ₁₄ , C ₆ ~C ₁₃ , C ₆ ~C ₁₂ , C ₆ to C ₁₁ , C ₆ to C ₁₀ , C ₆ , C ₁₀ , C 12 , C 13 , C ₁₄ , C ₁₅ , _{C 16} , C ₁₇ , C ₁₈ , C ₁₉ , _{C 20 ,} C ₂₁ , It may be an aryl group such as C ₂₂ , C ₂₃ , C ₂₄ , C ₂₅ , C ₂₆ , C ₂₇ , C ₂₈ , C ₂₉ , C ₃₀ .

When at least one of L ¹ , L', R _a and R _b , and R ¹ to R ⁴ is substituted with a heterocyclic group, the heterocyclic group is, for example, C ₂ to C ₃₀ , C ₂ to C ₂₉ , C ₂ to C ₂₈ , C ₂ ~C ₂₇ , C ₂ ~C ₂₆ , C ₂ ~C ₂₅ , C ₂ ~C ₂₄ , C ₂ ~C ₂₃ , C ₂ ~C ₂₂ , C ₂ ~C ₂₁ , C ₂ ~C ₂₀ , C ₂ to C ₁₉ , C ₂ to C ₁₈ , C ₂ to C ₁₇ , C ₂ to C ₁₆ , C ₂ to C ₁₅ , C ₂ to C ₁₄ , C ₂ to C ₁₃ , C ₂ to C ₁₂ , C ₂ to C ₁₁ , C ₂ to C ₁₀ , C ₂ to C ₉ , C ₂ to C ₈ , C ₂ to C ₇ , C ₂ to C ₆ , C ₂ to C ₅ , C ₂ to C ₄ , C ₂ to C ₃ , C ₂ , C ₃ , C ₄ , C ₅ , C ₆ , C ₇ , C ₈ , C 9 , C ₁₀ , C ₁₁ , C ₁₂ , C ₁₃ , C ₁₄ , C ₁₅ , C _{16 ,} C ₁₇ , C ₁₈ , C ₁₉ , C ₂₀ , C ₂₁ , C ₂₂ , C ₂₃ , C ₂₄ , C ₂₅ , C ₂₆ , C ₂₇ , C ₂₈ , C ₂₉ , C ₃₀ , and the like.

When at least one of Ar ¹ to Ar ³ , L ¹ , L', R _a and R _b , and R ¹ to R ⁴ is substituted with a fluorenyl group, the fluorenyl group is 9,9-dimethyl-9H- Fluorene, 9,9-diphenyl-9H-fluorene, 9,9'-spirobifluorene, spiro[benzo[ b ]fluorene-11,9'-fluorene], benzo[ b ]flu orene, 11,11-diphenyl- 11H -benzo[ b ]fluorene, 9-(naphthalen-2-yl)9-phenyl- 9H -fluorene, and the like.

Among Ar ¹ to Ar ³ , L ¹ , L', R _a and R _b , and R ¹ to R ⁴ , when substituted with at least an alkyl group, the alkyl group is, for example, C ₁ to C ₂₀ , C ₁ to C ₁₀ , C It may be an alkyl group such as ₁ to C ₄ , C ₁ , C ₂ , C ₃ , C ₄ .

When at least one of Ar ¹ to Ar ³ , L ¹ , L', R _a and R _b , and R ¹ to R ⁴ is substituted with an aliphatic ring group, the aliphatic ring group is, for example, C ₃ to C ₂₀ , C ₃ to C ₁₉ , C ₃ to C ₁₈ , C ₃ to C ₁₇ , C ₃ to C ₁₆ , C ₃ to C ₁₅ , C ₃ to C ₁₄ , C ₃ to C ₁₃ , C ₃ to C ₁₂ , C ₃ to C ₁₁ , Aliphatic such as C ₃ to C ₁₀ , C ₃ to C ₈ , C ₃ to C ₆ , C ₆ , C ₁₀ , C ₁₁ , C ₁₂ , C ₁₃ , C ₁₄ , C 15 , C ₁₆ , _{C 17 ,} C ₁₈ It may be a ring group.

Chemical Formula 1 may be represented by one of the following Chemical Formulas 1-1 to 1-3.

<Formula 1-1> <Formula 1-2> <Formula 1-3>

In Chemical Formulas 1-1 to 1-3, Ar ¹ to Ar ³ , L ¹ , R ¹ to R ⁴ , and b to d are as defined in Chemical Formula 1, and a is an integer of 0 to 6.

Chemical Formula 1 may be represented by one of the following Chemical Formulas 2-1 to 2-4.

<Formula 2-1> <Formula 2-2>

<Formula 2-3> <Formula 2-4>

In Chemical Formulas 2-1 to 2-4, Ar ¹ to Ar ³ , L ¹ , R ¹ to R ⁴ , b to d are as defined in Chemical Formula 1, and a is an integer of 0 to 6.

Formula 1 may be represented by Formula 3 below.

<Formula 3>

In Formula 3, Ar ¹ to Ar ³ , R ¹ to R ⁴ , and b to d are as defined in Formula 1, and a is an integer of 0 to 6.

R ⁵ are the same as or different from each other and are hydrogen; heavy hydrogen; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; A C ₂ -C ₃₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And C ₃ -C ₃₀ It is selected from the group consisting of an aliphatic ring group, adjacent groups may bond to each other to form a ring, e is an integer from 0 to 4, n is an integer from 1 to 3.

Chemical Formula 1 may be represented by one of the following Chemical Formulas 3-1 to 3-3.

<Formula 3-1> <Formula 3-2> <Formula 3-3>

In Formula 3-1 to Formula 3-3, Ar ¹ to Ar ³ , R ¹ to R ⁴ , b to d are as defined in Formula 1, a is an integer of 0 to 6, and R ⁵ is As defined in 3, e is an integer from 0 to 4.

Specifically, the compound represented by Formula 1 may be one of the following compounds, but is not limited thereto.

In another aspect, the present invention provides an organic electric device including a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode, wherein the organic material layer includes a compound represented by Formula 1 .

The organic material layer includes a light emitting layer and a hole transport region formed between the first electrode and the light emitting layer, and the hole transport region includes the compound of Formula 1. The hole transport region includes a light emitting auxiliary layer, and the light emitting auxiliary layer includes the compound of Formula 1.

The organic electric element may further include a light efficiency improvement layer including a compound represented by Formula 1, wherein the light efficiency improvement layer is formed on a layer that does not contact the organic material layer among both surfaces of the first electrode or the second electrode. .

The organic material layer may include two or more stacks including a hole transport layer, a light emitting layer, and an electron transport layer sequentially formed on the anode, and may further include a charge generation layer formed between the two or more stacks.

In another aspect, the present invention provides an electronic device including a display device and a control unit driving the display device. In this case, the display device includes the compound represented by Chemical Formula 1.

Hereinafter, a synthesis example of the compound represented by Formula 1 and a manufacturing example of an organic electric device according to the present invention will be described in detail with reference to examples, but the present invention is not limited to the following examples.

[Synthesis Example]

The compound represented by Formula 1 according to the present invention (final product) may be prepared according to the following Reaction Scheme 1, but is not limited thereto.

<Scheme 1> (Hal ¹ is I, Br or Cl)

Synthesis of Sub 1

Sub 1 of Reaction Scheme 1 may be synthesized by the reaction pathway of Reaction Scheme 2 below, but is not limited thereto.

<Scheme 2> (Hal ² is I, Br or Cl)

Sub A of Reaction Scheme 2 may be synthesized by the reaction pathway of Reaction Scheme 2-1 below, but is not limited thereto.

<Scheme 2-1>

1. Synthesis of Sub1-1

Sub1A-1 (10.3 g, 25.7 mmol) Sub1B-1 (4.4 g, 25.7 mmol), Pd ₂ (dba) ₃ (0.7 g, 0.8 mmol), NaO t -Bu (7.4 g, 77.1 mmol), 50wt% After adding P( t -Bu) ₃ (0.62 ml, 0.8 mmol) and Toluene (210 ml), the mixture was stirred at 100 °C. After the reaction was completed, the mixture was extracted with CH ₂ Cl ₂ and water, and the organic layer was dried over MgSO ₄ and concentrated. Thereafter, the concentrate was separated by a silica gel column and recrystallized to obtain 12.2 g of the product (yield: 89%).

2. Synthesis of Sub1-6

Sub1A-2 (11.2 g, 27.9 mmol), Sub1B-2 (6.1 g, 27.9 mmol), Pd ₂ (dba) ₃ (0.8 g, 0.8 mmol), NaO t -Bu (8.1 g, 83.8 mmol), 50wt% P( t -Bu) ₃ (0.68 ml, 1.7 mmol) and Toluene (230 ml) were added, reacted in the same manner as in the synthesis of Sub1-1, and purified to obtain 14.8 g (yield: 91%) of a product.

3. Synthesis of Sub1-18

Sub1A-3 (9.8 g, 24.4 mmol), Sub1B-3 (2.3 g, 24.4 mmol), Pd ₂ (dba) ₃ (0.7 g, 0.7 mmol), NaO t -Bu (7.1 g, 73.3 mmol), 50wt% P( t -Bu) ₃ (0.6 ml, 1.5 mmol) and Toluene (200 ml) were added, reacted in the same manner as in the synthesis method of Sub1-1, and purified to obtain 9.7 g of a product (yield: 87%).

4. Synthesis of Sub1-46

Sub1A-4 (12.6 g, 26.4 mmol), Sub1B-4 (6.5 g, 26.4 mmol), Pd ₂ (dba) ₃ (0.7 g, 0.8 mmol), NaO t -Bu (7.6 g, 79.3 mmol), 50wt% P( t -Bu) ₃ (0.64 ml, 1.6 mmol) and Toluene (260 ml) were added, reacted in the same manner as in the synthesis method of Sub1-1, and purified to obtain 15.2 g of a product (yield: 84%).

Compounds belonging to Sub 1 may be the following compounds, but are not limited thereto, and FD-MS (Field Desorption-Mass Spectrometry) values of the following compounds are shown in Table 1 below.

[Table 1]

Synthesis of Sub 2

Sub 2 of Reaction Scheme 1 may be synthesized by the reaction pathway of Reaction Scheme 3 below, but is not limited thereto.

<Scheme 3> (Hal ¹ and Hal ³ are Br, I or Cl)

1. Sub 2-1 Synthesis Example

Sub2C-1 (14.8 g, 77.3 mmol) Sub2D-1 (13.1 g, 77.3 mmol), Pd ₂ (dba) ₃ (2.1 g, 2.3 mmol), NaO t -Bu (22.3 g, 231.9 mmol), 50wt% After adding P( t -Bu) ₃ (1.9 ml, 4.6 mmol) and Toluene (300 ml), the mixture was stirred at 100 °C. After the reaction was completed, the mixture was extracted with CH ₂ Cl ₂ and water, and the organic layer was dried over MgSO ₄ and concentrated. Thereafter, the concentrate was separated by a silica gel column and then recrystallized to obtain 19.0 g of the product (yield: 88%).

2. Synthesis of Sub 2-9

Sub2C-2 (12.5 g, 46.7 mmol) Sub2D-2 (11.5 g, 46.7 mmol), Pd ₂ (dba) ₃ (1.3 g, 1.4 mmol), NaO t -Bu (13.5 g, 140.2 mmol), 50wt% P( t -Bu) ₃ (1.1 ml, 2.8 mmol) and Toluene (250 ml) were added, reacted in the same manner as in the synthesis method of Sub2-1, and purified to obtain 17.1 g of a product (yield: 85%).

3. Synthesis of Sub 2-41

Sub2C-3 (10.6 g, 39.6 mmol), Sub2D-3 (9.3 g, 39.6 mmol), Pd ₂ (dba) ₃ (1.1 g, 1.2 mmol), NaO t -Bu (11.4 g, 118.9 mmol), 50wt% P( t -Bu) ₃ (1.0 ml, 2.4 mmol) and Toluene (230 ml) were added, reacted in the same manner as in the synthesis of Sub2-1, and then purified to obtain 13.8 g of product (yield: 86%).

4. Synthesis of Sub 2-80

Sub2C-4 (11.3 g, 35.6 mmol) Sub2D-4 (9.6 g, 35.6 mmol), Pd ₂ (dba) ₃ (1.0 g, 1.1 mmol), NaO t -Bu (10.3 g, 106.7 mmol), 50wt% P( t -Bu) ₃ (0.9 ml, 2.1 mmol) and Toluene (240 ml) were added, reacted in the same manner as in the synthesis method of Sub2-1, and purified to obtain 14.5 g of a product (yield: 81%).

The compound belonging to Sub 2 may be the following compounds, but is not limited thereto, and the FD-MS values of the following compounds are shown in Table 2 below.

[Table 2]

Synthesis of Final Compound

1. P-3 Synthesis Example

Sub2-3 (11.4 g, 32.0 mmol), Sub1-3 (14.7 g, 32.0 mmol), Pd ₂ (dba) ₃ (0.9 g, 1.0 mmol), NaO t -Bu (9.2 g, 96.1 mmol), 50wt% After adding P( t -Bu) ₃ (0.8 ml, 1.9 mmol) and Toluene (230 ml), the mixture was stirred at 100 °C. After the reaction was completed, the mixture was extracted with CH ₂ Cl ₂ and water, and the organic layer was dried over MgSO ₄ and concentrated. Thereafter, the concentrate was separated by a silica gel column and then recrystallized to obtain 20.9 g of the product (yield: 84%).

2. P-13 Synthesis Example

Sub2-11 (10.7 g, 24.8 mmol), Sub1-11 (14.5 g, 24.8 mmol), Pd ₂ (dba) ₃ (0.7 g, 0.7 mmol), NaO t -Bu (7.1 g, 74.3 mmol), 50wt% P( t -Bu) ₃ (0.6 ml, 1.5 mmol) and Toluene (220 ml) were added, reacted as in the synthesis method of P-3, and purified to obtain 19.4 g of product (yield: 80%).

3. P-19 Synthesis Example

Sub2-17 (12.3 g, 29.9 mmol), Sub1-7 (13.7 g, 29.9 mmol), Pd ₂ (dba) ₃ (0.8 g, 0.9 mmol), NaO t -Bu (8.6 g, 89.8 mmol), 50wt% P( t -Bu) ₃ (0.7 ml, 1.8 mmol) and Toluene (250 ml) were added, reacted as in the synthesis method of P-3, and purified to obtain 20.4 g of product (yield: 82%).

4. P-41 Synthesis Example

Sub2-38 (11.0 g, 21.7 mmol), Sub1-19 (10.0 g, 21.7 mmol), Pd ₂ (dba) ₃ (0.6 g, 0.7 mmol), NaO t -Bu (6.3 g, 65.2 mmol), 50wt% P( t -Bu) ₃ (0.5 ml, 1.3 mmol) and Toluene (230 ml) were added, reacted as in the synthesis method of P-3, and purified to obtain 17.1 g of product (yield: 85%).

5. Synthesis of P-53

Sub2-49 (13.5 g, 31.3 mmol), Sub1-31 (16.7 g, 31.3 mmol), Pd ₂ (dba) ₃ (0.9 g, 0.9 mmol), NaO t -Bu (9.0 g, 93.8 mmol), 50wt% P( t -Bu) ₃ (0.8 ml, 1.9 mmol) and Toluene (270 ml) were added, reacted as in the synthesis method of P-3, and purified to obtain 23.5 g of product (yield: 81%).

The FD-MS values of the compounds P-1 to P-92 of the present invention prepared according to the Synthesis Example as described above are shown in Table 3 below.

[Table 3]

Manufacturing evaluation of organic electric devices

[Example 1] Red organic light emitting device (light emitting auxiliary layer)

4,4',4"-tris[2-naphthyl(phenyl)amino]triphenylamine (hereinafter abbreviated as 2-TNATA) was vacuum-deposited on the ITO layer (anode) formed on the glass substrate to inject holes with a thickness of 60 nm. After forming the layer, N, N'-bis (1-naphthalenyl) -N, N'-bis-phenyl- (1,1'-biphenyl) -4,4'-diamine (hereinafter referred to as , Abbreviated as NPB) was vacuum deposited to a thickness of 60 nm to form a hole transport layer.

Subsequently, the compound P-1 of the present invention was vacuum deposited on the hole transport layer to a thickness of 20 nm to form an auxiliary light emitting layer, and then 4,4'-N,N'-dicarbazole-biphenyl (hereinafter 'CBP') and bis-(1-phenylisoquinolyl)iridium(III)acetylacetonate (hereinafter abbreviated as '(piq) ₂ Ir(acac)') as a dopant material, but the weight ratio of the host and the dopant is A light emitting layer having a thickness of 30 nm was formed by doping the dopants in a ratio of 95:5.

Next, (1,1'-biphenyl-4-olato)bis(2-methyl-8-quinolinolato)aluminum (hereinafter abbreviated as BAlq) was vacuum deposited on the light emitting layer to form a hole blocking layer having a thickness of 10 nm. And, tris (8-quinolinol) aluminum (hereinafter abbreviated as Alq ₃ ) was vacuum deposited on the hole blocking layer to a thickness of 40 nm to form an electron transport layer. Thereafter, LiF was deposited on the electron transport layer to form an electron injection layer having a thickness of 0.2 nm, and Al was deposited on the electron injection layer to form a cathode having a thickness of 150 nm.

[Example 2] to [Example 18]

An organic electroluminescent device was manufactured in the same manner as in Example 1, except that the compound of the present invention shown in Table 4 was used instead of the compound P-1 of the present invention as a material for the light emitting auxiliary layer.

[Comparative Example 1] and [Comparative Example 2]

An organic electroluminescent device was manufactured in the same manner as in Example 1, except that Comparative Compound 1 or Comparative Compound 2 described in Table 4 was used instead of Compound P-1 of the present invention as a material for the light emitting auxiliary layer.

<Comparative compound 1> <Comparative compound 2>

Electroluminescence (EL) characteristics were measured with PR-650 of Photoresearch Co., Ltd. by applying a forward bias DC voltage to the organic electroluminescent devices manufactured in Examples and Comparative Examples of the present invention, and 2500 cd/m ² Standard luminance T95 life was measured through life measurement equipment manufactured by McScience. The measurement results are shown in Table 4 below.

[Table 4]

As can be seen from the results of Table 4, when the material for an organic light emitting device of the present invention is used as a material for the light emitting auxiliary layer, compared to the case of using Comparative Compound 1 and Comparative Compound 2, which have a similar basic skeleton to the compound of the present invention, organic The driving voltage of the electroluminescent device can be lowered, and the luminous efficiency and lifetime can be remarkably improved.

Comparative Compounds 1 and 2 are similar in that they are diamine-type compounds in which the spirobifluorene structure is substituted, but Comparative Compound 2 is different in that they are spirobifluorene in which a benzene ring is condensed. Considering that the effect of Comparative Example 2 is more excellent than that of Comparative Example 1, the diamine type compound substituted with the condensed spirobifluorene structure is more suitable for the light emitting auxiliary layer material than the diamine type compound substituted with the simple spirobifluorene structure. suitable can be found.

Comparative Compound 2 is similar to Formula 1 of the present invention in that it is a diamine type structure substituted with a condensed spirobifluorene structure, but the part corresponding to Ar ¹ of the present invention is not a simple aryl but a heterocyclic pyridyl It is different in that it is an aryl group substituted with a group. That is, the compound of the present invention is different from Comparative Compound 2 in that Ar ¹ to Ar ³ cannot all be heterocyclic substituted aryl groups.

When the compound of the present invention is used as a light emitting auxiliary layer material, the driving voltage is significantly lowered and the efficiency and lifetime are significantly improved compared to the case of using Comparative Compounds 1 and 2. It can be seen that a compound in which all of ¹ to Ar ³ are simple aryl groups is suitable as a material for the light emitting auxiliary layer.

As the aromatic ring is further fused, the band gap, electrical properties, and interface properties are greatly changed, as well as T1 elevation and high thermal stability, and when Ar ¹ to Ar ³ are both simple aryl groups, aryl substituted with a heterocyclic group It seems that there is a difference in the LUMO value compared to the group.

Table 5 below compares the LUMO values of Comparative Compound 2 and Compound P-3 of the present invention.

[Table 5]

As can be seen in Table 5, the compound P-3 of the present invention has a higher LUMO value than the comparative compound 2. Since the compound of the present invention has a higher LUMO value, it has a better ability to block electrons passing from the light emitting layer than Comparative Compound 2, so that it can prevent light emission at the interface where the light emitting layer and the light emitting auxiliary layer are adjacent to each other, Deterioration of the interface can be prevented. As a result, it seems that the driving voltage of the organic electric element is pulled (lowered), and the lifespan and efficiency are improved.

As a result, hole characteristics, light efficiency characteristics, energy levels (LUMO, HOMO levels, T1 levels), hole injection and transfer characteristics, electron blocking ability, etc. may vary depending on the presence or absence of condensation of the core and the type of substituents, which affects the performance of the device. It can be seen that the influence of

Although the characteristics of the device in which the compound of the present invention is applied to only one of the light emitting auxiliary layers have been described in the evaluation results of the device fabrication described above, the compound of the present invention can be applied even when the hole transport layer or both the hole transport layer and the light emitting auxiliary layer are formed using the compound of the present invention. You will be able to.

The above description is merely illustrative of the present invention, and those skilled in the art will be able to make various modifications without departing from the essential characteristics of the present invention. The protection scope of the present invention should be construed according to the following claims, and all techniques within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (15)

1. A compound represented by Formula 1 below:

   <Formula 1>

   

   In Formula 1,

   Ring A is a condensed aryl ring of C ₁₀ ~ C ₃₀ , and Ring A can be substituted with one or more R ¹ that are the same as or different from each other;

   L ¹ is a C ₆ ~ C ₆₀ arylene group;

   Ar ¹ to Ar ³ are each independently a C ₆ to C ₆₀ aryl group;

   R ¹ to R ⁴ are the same or different, and each independently hydrogen; heavy hydrogen; halogen; cyano group; nitro group; C ₆ ~ C ₆₀ aryl group; fluorenyl group; A C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom selected from O, N, S, Si, and P; C ₃ ~ C ₆₀ aliphatic ring group; C ₁ ~ C ₂₀ Alkyl group; A C ₂ ~C ₂₀ alkenyl group; C ₂ ~C ₂₀ alkynyl group; A C ₁ ~ C ₂₀ alkoxy group; C ₆ ~ C ₂₀ aryloxy group; And -L'-N (R _a ) (R _b ) It is selected from the group consisting of, adjacent groups may be bonded to each other to form a ring,

   b and c are each an integer of 0 to 4, d is an integer of 0 to 3,

   L' is a single bond; C ₆ ~ C ₆₀ arylene group; Fluorenylene group; C ₃ ~ C ₆₀ aliphatic ring group; And selected from the group consisting of a C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom of O, N, S, Si and P,

   Wherein R _a and R _b are each independently a C ₆ ~ C ₆₀ aryl group; fluorenyl group; C ₃ ~ C ₆₀ aliphatic ring group; And it is selected from the group consisting of a C ₂ ~C ₆₀ heterocyclic group containing at least one heteroatom of O, N, S, Si and P,

   Each of Ar ¹ to Ar ³ is deuterium; halogen; cyano group; nitro group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; And it may be substituted with one or more substituents selected from the group consisting of a C ₃ -C ₃₀ aliphatic group,

   Wherein L ¹ , L', R _a and R _b , R ¹ to R ⁴ are each deuterium; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; A C ₂ -C ₃₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And it may be substituted with one or more substituents selected from the group consisting of a C ₃ -C ₃₀ aliphatic ring group.
2. According to claim 1,

   Formula 1 is a compound characterized in that represented by one of the following formulas 1-1 to 1-3:

   <Formula 1-1> <Formula 1-2> <Formula 1-3>

   

   In Formula 1-1 to Formula 1-3, Ar ¹ to Ar ³ , L ¹ , R ¹ to R ⁴ , b to d are as defined in claim 1, and a is an integer of 0 to 6.
3. According to claim 1,

   Formula 1 is a compound characterized in that represented by one of the following formulas 2-1 to 2-4:

   <Formula 2-1> <Formula 2-2>

   

   <Formula 2-3> <Formula 2-4>

   

   In Formulas 2-1 to 2-4, Ar ¹ to Ar ³ , L ¹ , R ¹ to R ⁴ , b to d are as defined in claim 1, and a is an integer of 0 to 6.
4. According to claim 1,

   Formula 1 is a compound characterized in that represented by the following formula (3):

   <Formula 3>

   

   In Formula 3, Ar ¹ to Ar ³ , R ¹ to R ⁴ , b to d are as defined in claim 1, a is an integer of 0 to 6,

   R ⁵ are the same as or different from each other and are hydrogen; heavy hydrogen; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; A C ₂ -C ₃₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And C ₃ -C ₃₀ It is selected from the group consisting of an aliphatic ring group, adjacent groups may be bonded to each other to form a ring,

   e is an integer from 0 to 4, and n is an integer from 1 to 3.
5. According to claim 1,

   Formula 1 is a compound characterized in that represented by one of the following formulas 3-1 to 3-3:

   <Formula 3-1> <Formula 3-2> <Formula 3-3>

   

   In Formula 3-1 to Formula 3-3, Ar ¹ to Ar ³ , R ¹ to R ⁴ , b to d are as defined in claim 1, a is an integer of 0 to 6,

   R ⁵ are the same as or different from each other and are hydrogen; heavy hydrogen; halogen; A silane group unsubstituted or substituted with a C ₁ -C ₂₀ alkyl group or a C ₆ -C ₂₀ aryl group; C ₁ -C ₂₀ alkyl group or C ₆ -C ₂₀ aryl group substituted or unsubstituted phosphine oxide; Siloxane group; cyano group; nitro group; C ₁ -C ₂₀ Alkylthio group; C ₁ -C ₂₀ alkoxy group; C ₆ -C ₂₀ aryloxy group; C ₆ -C ₂₀ arylthio group; C ₁ -C ₂₀ Alkyl group; C ₂ -C ₂₀ alkenyl group; C ₂ -C ₂₀ alkynyl group; C ₆ -C ₃₀ aryl group; fluorenyl group; A C ₂ -C ₃₀ heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si and P; And C ₃ -C ₃₀ It is selected from the group consisting of an aliphatic ring group, adjacent groups may combine with each other to form a ring, e is an integer from 0 to 4.
6. According to claim 1,

   A compound, characterized in that the compound represented by Formula 1 is one of the following compounds:

   

   

   

   

   .
7. In the organic electric device including a first electrode, a second electrode and an organic material layer formed between the first electrode and the second electrode,

   The organic material layer is an organic electric device characterized in that it comprises the compound of formula 1 of claim 1.
8. According to claim 7,

   The organic material layer includes a light emitting layer and a hole transport zone formed between the first electrode and the light emitting layer, wherein the hole transport zone includes the compound of Formula 1.
9. According to claim 8,

   The organic electric device according to claim 1 , wherein the hole transport region includes an auxiliary light emitting layer, and the auxiliary light emitting layer includes the compound of Formula 1.
10. According to claim 7,

    The organic electric device according to claim 1 , wherein the organic material layer includes two or more stacks including a hole transport layer, a light emitting layer, and an electron transport layer sequentially formed on the first electrode.
11. According to claim 10,

    The organic electric device, characterized in that the stack further comprises a light emitting auxiliary layer formed between the hole transport layer and the light emitting layer.
12. According to claim 10,

    The organic material layer further comprises a charge generation layer formed between the two or more stacks.
13. According to claim 7,

    The organic electric element further comprises a light efficiency improving layer, wherein the light efficiency improving layer is formed on a layer not in contact with the organic material layer among both surfaces of the first electrode or the second electrode.
14. A display device comprising the organic electric element of claim 7; and

    An electronic device comprising a controller for driving the display device.
15. According to claim 14,

    The electronic device, characterized in that the organic electric device is selected from the group consisting of organic light emitting devices, organic solar cells, organic photoreceptors, organic transistors, devices for monochromatic lighting and devices for quantum dot displays.

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