Cyclic compound and organic light-emitting element comprising same

Patent metadata

Field	Value
Publication number	US-10431748-B2
Application number	US-201515515975-A
Country	US
Kind code	B2
Filing date	Sep 11, 2015
Priority date	Oct 30, 2014
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The present specification relates to a cyclic compound and an organic light emitting device comprising the same.

First claim

The invention claimed is:

1. A cyclic compound represented by the following Chemical Formula 1:

wherein in Chemical Formula 1,
at least one of Ar 1 and Ar 2 is a substituted or unsubstituted pyrimidyl group, or a substituted or unsubstituted triazinyl group, and wherein when the at least one of Ar 1 and Ar 2 is a substituted pyrimidyl group or a substituted triazinyl group, the pyrimidyl group or the triazinyl group has 2 or 3 substituents selected from the group consisting of a phenyl group, a naphthyl group, a biphenyl group, a nitrile group, a pyridinyl group, and a thiophenyl group;
when one of the Ar 1 and Ar 2 is a substituted or unsubstituted pyrimidyl group, or a substituted or unsubstituted triazinyl group, the other one of Ar 1 and Ar 2 is -L 1 -(Z 1 ) p ;
L 1 is selected from the group consisting of a direct bond; a phenylene group, a biphenylylene group, a naphthylene group, a quinolinylene group, a quinazolinylene group, a pyridinylene group, a pyrimidinylene group, and a triazinylene group;
Z 1 is selected from the group consisting of hydrogen; a nitrile group; a phenyl group, a naphthyl group, a biphenyl group, a pyridine group, a pyrimidinyl group, a triazinyl group, a quinolinyl group, a quinazolinyl group, and a thiophenyl group; however, Z 1 is not hydrogen when L 1 is a direct bond;
p is an integer of 1 to 3, and when p is two or more, Z 1 s are the same as or different from each other;
m and n are 1;
X is C; and
R 1 and R 2 are the same as or different from each other, and each independently selected from the group consisting of a methyl group, an ethyl group, a phenyl group and a naphthyl group, or R 1 and R 2 are linked to each other to form a cyclohexyl group, with the proviso that when one of R 1 and R 2 is a phenyl group the other one of R 1 and R 2 is a methyl group.

2. The cyclic compound of claim 1 , wherein R 1 and R 2 are the same as or different from each other, and each independently selected from the group consisting of a phenyl group; and a naphthyl group.

3. The cyclic compound of claim 1 , wherein R 1 and R 2 are the same as or different from each other, and each independently selected from the group consisting of a substituted or unsubstituted methyl group; and a substituted or unsubstituted ethyl group.

4. The cyclic compound of claim 1 , wherein R 1 and R 2 are linked to each other to form a substituted or unsubstituted cyclohexyl ring.

5. A cyclic compound represented by any one of the following compounds:

6. An organic light emitting device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
one or two or more organic material layers provided between the first electrode and the second electrode,
wherein one or more layers of the organic material layers include the cyclic compound of claim 1 .

7. The organic light emitting device of claim 6 , wherein the organic material layer includes a light emitting layer, and the light emitting layer includes the cyclic compound.

8. The organic light emitting device of claim 6 , wherein the organic material layer includes an electron transfer layer, an electron injection layer or a layer carrying out electron transfer and electron injection at the same time, and the electron transfer layer, the electron injection layer or the layer carrying out electron transfer and electron injection at the same time includes the cyclic compound.

9. The organic light emitting device of claim 6 , wherein the organic material layer includes a hole blocking layer, and the hole blocking layer includes the cyclic compound.

Assignees

• Lg Chemical Ltd

Inventors

• Heo Dong Uk
• Lee Dong Hoon
• Huh Jungoh
• Jang Boonjae
• Kang Minyoung
• Han Miyeon

Classifications

• C07D403/10

  linked by a carbon chain containing aromatic rings · CPC title

• C07D251/12

  having three double bonds between ring members or between ring members and non-ring members · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C07D213/85

  in position 3 · CPC title

• C09K2211/1059

  containing three nitrogen atoms as heteroatoms · CPC title