Organic electronic element and an electronic device comprising it

Patent metadata

Field	Value
Publication number	US-9917257-B2
Application number	US-201514808058-A
Country	US
Kind code	B2
Filing date	Jul 24, 2015
Priority date	Jul 24, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

Disclosed is an organic electric element comprising a first electrode, a second electrode, and an organic material layer between the first electrode and the second electrode, wherein the organic material layer comprises the compound of Formula 1 and Formula 2 to improve driving voltage, luminous efficiency, color purity, and life span.

First claim

The invention claimed is:

1. An organic electric element, comprising:
a first electrode,
a second electrode, and
an organic material layer formed between the first electrode and the second electrode, the organic material layer comprising a light emitting layer, an emission-auxiliary layer formed between the first electrode and the light emitting layer, and a hole transport layer formed between the first electrode and the emission-auxiliary layer,
at least one layer of the emission-auxiliary layer and the hole transport layer comprising a compound represented by Formula 1 below, singly or as a mixture of two or more, and the light emitting layer comprising a compound, represented by Formula 2 below, singly or as a mixture of two or more:

wherein,
Ar 1 to Ar 6 are independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, a fused ring group 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 alkoxy group, a C 6 -C 30 aryloxy group, and -L′-N(R a )(R b ),
o and p are each an integer of 0 or 1, with the proviso that at least one of o and p is 1,
R 1 to R 5 are independently selected from the group consisting of hydrogen, deuterium, halogen, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, a fused ring group 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 alkoxy group, a C 6 -C 30 aryloxy group, and -L′-N(R a )(R b ), and any two adjacent groups of R 1 s to R 5 s are optionally linked together to form a fused ring,
a, b, c, and m are each an integer from 1 to 4, and n is an integer from 1 to 3,
L′ is selected from the group consisting of a single bond, a C 6 -C 60 arylene group, a fluorenylene group, a bivalent fused ring group of a C 3 -C 60 aliphatic ring and a C 6 -C 60 aromatic ring, and a bivalent C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P,
R a and R b are independently selected from the group consisting of a C 6 -C 60 aryl group, a fluorenyl group, a fused ring group of a C 3 -C 60 aliphatic ring and a C 6 -C 60 aromatic ring, and a C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P,
L 1 is selected from the group consisting of a bivalent or trivalent C 6 -C 60 aromatic hydrocarbon group, a bivalent or trivalent C 2 -C 60 aliphatic hydrocarbon group, a bivalent or trivalent fluorene group, and a bivalent or trivalent C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P,
X and Y are independently selected from the group consisting of a single bond, S, O, N(R′), and C(R′)(R″), with the proviso that X and Y are not a single bond at the same time, here, R′ and R″ are independently selected from the group consisting of hydrogen, a C 6 -C 60 aryl group, a fluorenyl group, a C 2 -C 60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, and a C 1 -C 50 alkyl group, and, with the provisos that
the aryl group, fluorenyl group, fused ring group, heterocyclic group, alkyl group, alkenyl group, alkynyl group, alkoxy group, aryloxy group, arylene group, fluorenylene group, aromatic hydrocarbon group, aliphatic hydrocarbon group and fluorene group may be substituted by one or more substituents selected from the group consisting of deuterium, halogen, a silane group, a siloxane group, a boron group, a germanium group, a cyano group, a nitro group, a C 1 -C 20 alkylthio group, a C 1 -C 20 alkoxy group, a C 1 -C 20 alkyl group, a C 2 -C 20 alkenyl group, a C 2 -C 20 alkynyl group, a C 6 -C 20 aryl group, a C 6 -C 20 aryl group substituted by deuterium, a 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, a C 3 -C 20 cycloalkyl group, a C 7 -C 20 arylalkyl group, a C 8 -C 20 arylalkenyl group, an arylamine group and a heteroarylamine group.

2. The organic electric element as claimed in claim 1 , wherein Formula 1 comprising Formula 3 or Formula 4 below:

wherein, Ar 1 to Ar 5 , L, R 1 , R 2 , m and n are defined as in claim 1 .

3. The organic electric element as claimed in claim 1 , wherein at least one of Ar 2 to Ar 5 is a C 2 -C 60 heterocyclic group.

4. The organic electric element as claimed in claim 1 , wherein Formula 2 comprising Formula 5 or Formula 6 below:

wherein, Ar 6 , X, Y R 3 to R 5 , a, b, and c are defined as in claim 1 .

5. The organic electric element as claimed in claim 1 , wherein Formula 1 comprising any one of compounds below:

Assignees

• Duk San Neolux Co Ltd

Inventors

• Lee Bumsung
• Lee Sunhee
• Mun Soungyun
• Kim Daesung
• Park Jungcheol
• Lee Yunsuk
• Yeo Seungwon
• Park Junghwan

Classifications

• H01L51/0072

  Electricity · mapped topic

• H01L51/0071

  Electricity · mapped topic

• H01L51/0081

  Electricity · mapped topic

• H01L51/0085

  Electricity · mapped topic

• H01L51/0074

  Electricity · mapped topic