Compound for organic electric element, organic electric element using the same, and electronic device therefor

Patent metadata

Field	Value
Publication number	US-12063855-B2
Application number	US-202117343040-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Mar 29, 2018
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

Provided are an organic electric element having a first electrode, a second electrode, and at least an organic material layer formed between the first electrode and the second electrode, the organic material layer comprising an emitting layer and the emitting layer comprising a mixture of host materials which improves luminous efficiency, stability, and lifespan of the element; and an organic electronic device comprising the element.

First claim

What is claimed is:

1. An organic electric element comprising a first electrode, a second electrode, and at least an organic material layer formed between the first electrode and the second electrode, wherein the organic material layer comprises an emitting layer, and the emitting layer comprises a first host material represented by Formula 25 and a second host material represented by Formula 26:

wherein:
1) Ar 21 , Ar 22 , Ar 23 and Ar 24 are each independently selected from the group consisting of a C 6 -C 60 aryl group; a fluorenyl group; a C 2 -C 60 heterocyclic group including at least one hetero atom of O, N, S, Si, P; a fused ring group of a C 3 -C 60 aliphatic ring and a C 6 -C 60 aromatic ring;
2) R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , R 37 and R 38 are each independently selected from the group consisting of hydrogen; deuterium; halogen; cyano; nitro; a C 6 -C 60 aryl group; a fluorenyl group; a C 2 -C 60 heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si or P; a fused ring of a C 3 -C 60 aliphatic ring and a C 6 -C 60 aromatic ring; a C 1 -C 50 alkyl group; a C 2 -C 20 alkenyl group; a C 2 -C 20 alkynyl group; a C 1 -C 30 alkoxyl group; a C 6 -C 30 aryloxy group, wherein in case a1, a2, a3, a4, b1, b2, b3 and/or b4 are 2 or more, a plurality of R 31 or a plurality of R 32 or a plurality of R 33 or a plurality of R 34 or a plurality of R 35 or a plurality of R 36 or a plurality of R 37 or a plurality of R 38 , the plural groups being the same to or different from each other, may be bonded to each other to form an aromatic or a heteroaromatic ring,
3) a1, a2, a3, a4, b2 and b3 are each independently an integer of 0 to 3, b1 and b4 are each independently an integer of 0 to 4,
4) X 21 and X 22 are each independently O or S, and
5) B is a substituent represented by Formula 27:

wherein R 39 and R 40 are the same as the definition of R 31
Ar 25 is the same as the definition of Ar 21 ,
X 23 is O or S, b5 and b6 are each independently an integer of 0 to 3, and
means the bonding position,
wherein the aryl group, heterocyclic group, fluorenyl group, aliphatic ring group, fused ring group, alkyl group, alkenyl group, alkynyl group, alkoxy group or aryloxy group may be substituted with one or more substituents selected from the group consisting of deuterium; halogen; silane; siloxane; boron; germanium; cyano; nitro; a C 1 -C 20 alkylthio group; C 1 -C 20 alkoxy 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; C 6 -C 20 aryl group substituted with deuterium; a fluorenyl group; C 2 -C 20 heterocyclic group; C 3 -C 20 cycloalkyl group; C 7 -C 20 arylalkyl group and C 8 -C 20 arylalkenyl group, wherein the substituents may be bonded to each other to form a saturated or unsaturated ring, wherein the term ‘ring’ means a C 3 -C 60 aliphatic ring or a C 6 -C 60 aromatic ring or a C 2 -C 60 heterocyclic group or a fused ring formed by the combination thereof.

2. The organic electric element of claim 1 , wherein Formula 25 is represented by one of Formulas 25-1 to 25-4:

wherein R 31 , R 32 , R 33 , R 34 , a1, a2, a3, a4, Ar 21 , Ar 22 , Ar 23 , X 21 and X 22 are defined the same as defined in claim 1 .

3. The organic electric element of claim 1 , wherein Ar 21 , Ar 22 and Ar 23 are each represented by one of Formulas Ar-1 to Ar-12:

wherein:
1) Z 61 , Z 62 , Z 63 , Z 64 and Z 65 are each independently CR 48 or N, with the proviso that at least one of Z 61 , Z 62 , Z 63 , Z 64 and Z 65 is N,
2) X 24 is O, S, CR 49 R 50 or NR 51 ,
3) R 41 , R 42 , R 43 , R 44 , R 45 , R 46 , R 47 and R 48 are defined the same as the definition of R 31 in claim 1 ,
4) R 49 , R 50 and R 51 are each independently selected from the group consisting of hydrogen; deuterium; a C 1 -C 60 alkyl group; a C 2 -C 20 alkenyl group; a C 2 -C 20 alkynyl group; a C 1 -C 60 alkoxy group; a C 6 -C 60 aryloxy group; a C 6 -C 60 aryl group; a fluorenyl group; a C 2 -C 60 heterocyclic group including at least one hetero atom of O, N, S, Si, P; a fused ring group of a C 3 -C 60 aliphatic ring and a C 6 -C 60 aromatic ring; and R 49 and R 50 may be bonded to each other to form a spiro ring,
5) c1 is an integer of 0 to 5, c2, c5, c6 and c7 are each independently an integer of 0 to 4, c3 is an integer of 0 to 7, c4 is an integer of 0 to 3,
6) means the bonding position.

4. The organic electric element of claim 1 , wherein the compound represented by Formula 25 comprises any one of the following Compounds 7-10, 7-20 and Compounds 8-1 to 8-38:

5. The organic electric element of claim 1 , wherein B in Formula 26 is represented by one of Formulas 27-1 to 27-4:

wherein:
1) R 39 , R 40 , X 23 , Ar 25 , b5 and b6 are defined the same as in claim 1 ,
2) means the bonding position.

6. The organic electric element of claim 1 , wherein B in Formula 26 is represented by one of Formulas 27-5 to 27-12:

wherein:
1) R 39 , R 40 , X 23 , Ar 25 , b5 and b6 are each defined the same as in claim 1 ,
2) means the bonding position.

7. The organic electric element of claim 1 , wherein the compound represented by Formula 26 is represented by one of Compounds 9-1 to 9-36:

Assignees

• Duk San Neolux Co Ltd

Inventors

• Mun Soung Yun
• Lee Sun Hee
• Park Jong Gwang
• So Ki Ho
• Kim Won Sam
• Park Jung Hwan
• Park Chi Hyun
• Chae Mi Young

Classifications

• H10K50/16

  Electron transporting layers · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K85/6576

  comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene · CPC title

• H10K85/6574

  comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes · CPC title