Organic light emitting device

Patent metadata

Field	Value
Publication number	US-12004423-B2
Application number	US-201917057419-A
Country	US
Kind code	B2
Filing date	Jul 25, 2019
Priority date	Jul 25, 2018
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

An organic light emitting device having a first organic material layer that includes a compound of Chemical Formula 1 and the second organic material layer that includes a compound of Chemical Formula 2,

First claim

The invention claimed is:

1. An organic light emitting device comprising:
a first electrode;
a second electrode provided opposite to the first electrode; and
a first organic material layer and a second organic material layer provided between the first electrode and the second electrode,
wherein the first organic material layer includes a compound of the following Chemical Formula 1; and
the second organic material layer includes a compound of the following Chemical Formula 2:

in Chemical Formula 1,
L1 and L2 are the same as or different from each other, and each independently a direct bond; or a substituted or unsubstituted arylene group;
R1 and R2 are the same as or different from each other, and each independently hydrogen; deuterium; a halogen group; a cyano group; a nitro group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted haloalkyl group; a substituted or unsubstituted haloalkoxy group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group, or bond to adjacent groups to form a substituted or unsubstituted ring;
n1 is an integer of 0 to 7, and when n1 is 2 or greater, the two or more R1s are the same as or different from each other;
n2 is an integer of 0 to 9, and when n2 is 2 or greater, the two or more -L2-R2s are the same as or different from each other; and
n3 is 1 or 2, and when n3 is 2, substituents in the two parentheses are the same as or different from each other, and 1≤n2+n3≤10,

in Chemical Formula 2,
at least one of X1 to X3 is N, and the rest are CR;
R and Ar1 to Ar3 are the same as or different from each other, and each independently hydrogen; deuterium; a cyano group; a nitrile group; a substituted or unsubstituted silyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted haloalkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group, or bond to adjacent groups to form a substituted or unsubstituted ring, and at least one of Ar1 to Ar3 is of the following Chemical Formula 3;
L11 to L13 are the same as or different from each other, and each independently a direct bond; a substituted or unsubstituted arylene group; or a substituted or unsubstituted divalent heterocyclic group; and
m1 to m3 are each an integer of 0 to 3, and when m1 to m3 are each 2 or greater, substituents in the two or more parentheses are the same as or different from each other,

in Chemical Formula 3,
any one of R11 to R26 is linked to any one of L11 to L13, and the rest are hydrogen; deuterium; a cyano group; a nitrile group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group, or bond to adjacent groups to form a substituted or unsubstituted ring.

2. The organic light emitting device of claim 1 , wherein the first organic material layer and the second organic material layer are provided adjacent to each other.

3. The organic light emitting device of claim 1 , wherein the first organic material layer is a light emitting layer.

4. The organic light emitting device of claim 3 , wherein the light emitting layer includes one or more types of the compound of Chemical Formula 1 as a host of the light emitting layer.

5. The organic light emitting device of claim 1 , wherein the second organic material layer is a hole blocking layer or an electron control layer.

6. The organic light emitting device of claim 1 , wherein the compound of Chemical Formula 1 is selected from among the following structures:

7. The organic light emitting device of claim 1 , wherein the compound of Chemical Formula 2 is selected from among the following structures:

Assignees

• Lg Chemical Ltd

Inventors

• Huh Jungoh
• Hong Sung Kil
• Heo Dong Uk
• Han Miyeon
• Lee Jae Tak
• Yang Junghoon
• Yun Heekyung

Classifications

• H10K50/18

  Carrier blocking layers · CPC title

• H10K50/12

  comprising dopants · CPC title

• H10K50/181

  Electron blocking layers · CPC title

• H10K85/654

  comprising only nitrogen as heteroatom (H10K85/652 takes precedence) · CPC title

• H10K85/6574 Primary

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